CN116191237B - Modularized low-voltage switch cabinet for constant-current power supply system - Google Patents

Modularized low-voltage switch cabinet for constant-current power supply system

Info

Publication number
CN116191237B
CN116191237B CN202310243205.1A CN202310243205A CN116191237B CN 116191237 B CN116191237 B CN 116191237B CN 202310243205 A CN202310243205 A CN 202310243205A CN 116191237 B CN116191237 B CN 116191237B
Authority
CN
China
Prior art keywords
fixed
cabinet
electromagnet
supply system
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310243205.1A
Other languages
Chinese (zh)
Other versions
CN116191237A (en
Inventor
王敏
杨东亮
张胜
张黄河
赵龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lianyungang Gangsheng Switch Manufacturing Co ltd
Original Assignee
Lianyungang Gangsheng Switch Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lianyungang Gangsheng Switch Manufacturing Co ltd filed Critical Lianyungang Gangsheng Switch Manufacturing Co ltd
Priority to CN202310243205.1A priority Critical patent/CN116191237B/en
Publication of CN116191237A publication Critical patent/CN116191237A/en
Application granted granted Critical
Publication of CN116191237B publication Critical patent/CN116191237B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/306—Accessories, e.g. windows
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H02B1/565—Cooling; Ventilation for cabinets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention discloses a modularized low-voltage switch cabinet for a constant-current power supply system, and relates to the technical field of switch cabinets. The modularized low-voltage switch cabinet for the constant-current power supply system comprises a cabinet body, wherein a switch controller is fixed at the bottom of the inner wall of the cabinet body, an electromagnet is electrically connected to the top of the switch controller, and a matching magnetic block is arranged on the front side of the electromagnet. The modularized low-voltage switch cabinet for the constant-current power supply system has the advantages that the magnetic strength of the electromagnet is in direct proportion to the current flowing through the cabinet body, namely, the change of the current flowing through the cabinet body can cause corresponding change of the magnetic strength of the electromagnet, so that the electromagnet can correspondingly change the repulsive force of the matched magnetic block, the matched magnetic block moves under the action of the changed repulsive force, the resistance of the sliding rheostat can be changed to balance the resistance change of a part of the switch cabinet caused by element loss, and the situation that the current change is overlarge is avoided.

Description

Modularized low-voltage switch cabinet for constant-current power supply system
Technical Field
The invention relates to the technical field of switch cabinets, in particular to a modularized low-voltage switch cabinet for a constant-current power supply system.
Background
The switch cabinet is an important electrical device used in a power supply system, the main function of the switch cabinet is to realize the control of the power on and power off of each branch, the modularized low-voltage switch cabinet is a switch cabinet used in a low-voltage circuit, and the switch cabinet is composed of a plurality of modules such as a control module, a heat dissipation module and the like.
The constant current power supply system is characterized in that an automatic voltage transformation device is used in a circuit, so that when the voltage is increased or reduced, the current is always kept constant, the influence of overhigh or overlow current on the normal work of partial electric equipment is prevented, in a low-voltage circuit, the current is changed when the resistance in the circuit system is changed according to a current calculation formula I=U/R, the automatic voltage transformation device is generally used at a power transmission end, and when the resistance is changed due to long-time loss of an internal element of a switch cabinet at a user end, the current value output by the switch cabinet is also changed, so that the use of the electric equipment is influenced.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a modularized low-voltage switch cabinet for a constant-current power supply system, which solves the problems that an automatic voltage transformation device provided in the background art is generally used for a power transmission end, and when resistance changes due to long-time loss of internal elements of the switch cabinet positioned at a user end, the current value output by the switch cabinet also changes, thereby influencing the use of electric equipment.
(II) technical scheme
The modularized low-voltage switch cabinet for the constant-current power supply system comprises a cabinet body, wherein a switch controller is fixed at the bottom of the inner wall of the cabinet body, an electromagnet is electrically connected to the top of the switch controller, a matched magnetic block is arranged on the front side of the electromagnet, the bottom of the matched magnetic block is fixed with the control end of a sliding rheostat, the initial position of the control end of the sliding rheostat is positioned at the integral center of a resistance coil on the sliding rheostat, the sliding rheostat is electrically connected with the switch controller, namely, one connecting end of the sliding rheostat is connected with one interface of the switch controller through a wire, the control end is connected with the other interface of the switch controller through a wire, a cooling fan group is arranged at the bottom of the sliding rheostat, the cooling fan group is fixedly penetrated through the inner wall and the outer wall of the cabinet body, the top of the cooling fan group is electrically connected with a sliding speed changer, the sliding speed changer is provided with a slidable control end, the control end can adjust the rotating speed of the cooling fan group in the moving process, and the sliding speed changer control end is fixed with the control end of the sliding rheostat through a connecting rod; when the electromagnet is electrified, the front side and the rear side of the matched magnetic block have the same magnetic pole, namely the electromagnet and the matched magnetic block are magnetically repelled, according to a magnetic field intensity calculation formula H=NxI/Le (H is magnetic field intensity, the unit is A/m, N is the number of turns of an exciting coil, I is exciting current (measured value), the unit is A, le is the effective magnetic path length of a test sample, the unit is m), the magnetic intensity of the electromagnet is in direct proportion to the magnitude of current flowing through the cabinet body, namely the change of the magnitude of the current flowing through the cabinet body can cause the corresponding change of the magnetic intensity of the electromagnet, the sliding rheostat is controlled by the matching magnetic block, the heat dissipation effect of the heat dissipation fan set is controlled by the sliding speed changer when the resistance of the sliding rheostat is changed, and further, the stronger heat dissipation effect is realized when the resistance of the sliding rheostat is increased, so that the stability of the temperature in the cabinet body is maintained, and the influence of overhigh or overlow temperature in the cabinet body on normal use is prevented.
Preferably, the top of the cabinet body is provided with an air inlet, an air inlet device is fixed in the air inlet, a filter screen is fixed at the top of the inner wall of the air inlet device, the bottom of the filter screen is fixed with a water absorption sponge, air entering the cabinet body can be filtered through the filter screen, external impurities are prevented from entering the inner part of the cabinet body, and the water absorption sponge can absorb liquid water vapor entering the air in the cabinet body, so that the water vapor is prevented from corroding elements in the cabinet body.
Preferably, the water absorbing sponge consists of a fixed sponge and a movable sponge, the movable sponge is movably inserted into the side surface of the fixed sponge, an iron control board is fixed on one side of the movable sponge outside the fixed sponge, the iron control board is positioned on the side surface of the electromagnet and is magnetically adsorbed and connected with the electromagnet, the iron control board can be adsorbed by the magnet, the distance between the iron control board and the electromagnet is small, the magnetism carried by the electromagnet can adsorb the iron control board after the electromagnet is electrified, the iron control board movably penetrates through the inner wall and the outer wall of the side surface of the air inlet device, a spring is arranged between the iron control board and the air inlet device, when the magnetic adsorption force of the electromagnet on the iron control board is larger than the elastic force of the spring, the iron control board drives the movable sponge to move out of the fixed sponge, and at the moment, the resistance of the whole water absorbing sponge to air is reduced, so that the air inflow can be improved, and the radiating effect is enhanced, and the excessive temperature inside the cabinet body caused by overlarge heat emitted by the slide rheostat is prevented.
Preferably, the top of the cabinet body is fixed with one end of an elastic telescopic rod, the other end of the elastic telescopic rod is fixed with a rain shielding device, the center of the rain shielding device is sunken downwards, a water leakage port is formed in the center of the rain shielding device in a penetrating mode, a drain pipe is arranged at the bottom of the water leakage port, the top of the air inlet device can be shielded through the arrangement of the rain shielding device, water is prevented from entering the inside of the cabinet body when the switch cabinet is installed outdoors and rainy days are met, meanwhile, as the rainwater stored at the top of the rain shielding device is increased, the rain shielding device is heavier and falls down, the shielding effect of the rain shielding device on the air inlet device is improved, and part of rainwater in the rain shielding device flows out through the drain pipe.
Preferably, the top of the rain shielding device is provided with two water blocking devices, each water blocking device comprises a water blocking plate, a transverse movable block and a driving plate, the water blocking plates are located at the top of a water leakage opening, one ends of the two water blocking plates, which are far away, are mutually contacted, are fixed with the transverse movable block, the transverse movable block is installed at the top of the rain shielding device in a sliding manner left and right, the bottom of the transverse movable block is provided with a driving opening, the right side of the driving opening is arranged in a slope shape with high left and low right, the top of the driving plate is located below the right side of the driving opening, the bottom of the driving plate is fixed with the top of the cabinet body, the driving plates can separate the two water blocking plates only after the rain shielding device descends to a certain distance, and the rainwater in the rain shielding device can enter a drain pipe, so that the water storage effect of the rain shielding device is ensured, and the too far distance between the rain shielding device and an air inlet device is avoided due to too high water discharging speed in the rain shielding device.
Preferably, the bottom of the rain shielding device is fixed with a mounting bar, the bottom of the mounting bar is hinged with a scraping plate, the scraping plate is arranged in a front high and rear low mode, the bottom of the scraping plate is in contact with the top of the filter screen, two ends of the mounting bar are positioned on two sides of the rain shielding device, a plurality of semi-cylindrical matching bars are fixed at the tops of the two ends of the mounting bar, a driving column bar is arranged between the plurality of semi-cylindrical matching bars and the rain shielding device and fixed on a transverse movable block, the scraping plate can scrape the top of the filter screen by utilizing downward movement of the rain shielding device through the arrangement of the scraping plate, impurities at the top of the filter screen are removed, the driving column bar can sequentially collide with the plurality of semi-cylindrical matching bars by utilizing rightward movement of the transverse movable block, and vibration generated by collision can be transmitted to the scraping plate and the filter screen, so that impurities on the surfaces of the scraping plate and the filter screen are loosened and shed.
Preferably, the side surface of the rain shielding device is fixedly provided with a shielding plate, the shielding plate comprises a vertical part and an inclined part, the vertical part is in contact with the side surface of the cabinet body, the inclined part is arranged at the bottom of the vertical part, the whole shielding plate is arranged above the cooling fan set, and the cooling fan set can be protected by arranging the shielding plate to prevent rainwater from entering the cooling fan set.
(III) beneficial effects
The invention provides a modularized low-voltage switch cabinet for a constant-current power supply system. The beneficial effects are as follows:
(1) The modularized low-voltage switch cabinet for the constant-current power supply system has the advantages that the magnetic strength of the electromagnet is in direct proportion to the current flowing through the cabinet body, namely, the change of the current flowing through the cabinet body can cause corresponding change of the magnetic strength of the electromagnet, so that the repulsive force of the electromagnet on the matched magnetic block is correspondingly changed, the matched magnetic block moves under the action of the changed repulsive force, the resistance of the sliding rheostat can be changed, the resistance change of a part of the switch cabinet due to element loss is balanced, and the situation that the current change is overlarge is avoided.
(2) This constant current power supply system is with modularization low tension switchgear can filter the air that gets into the cabinet body through setting up the filter screen, prevents that external impurity from entering into the internal portion of cabinet, sets up the sponge that absorbs water and can adsorb the liquid steam that gets into the internal air of cabinet, prevents the internal component of steam corruption cabinet.
(3) When the magnetic adsorption force of the electromagnet to the iron control board is larger than the elasticity of the spring, the iron control board drives the movable sponge to move out of the fixed sponge, and the resistance of the whole water absorbing sponge to air is reduced at the moment, so that the air inflow can be improved, the heat dissipation effect is enhanced, and the fact that the temperature inside the cabinet body is too high due to overlarge heat emitted by the sliding rheostat is prevented.
(4) This constant current power supply system is with modularization low tension switchgear can block the rainwater in the rain shielding device through setting up water retaining device, only falls to the back of certain distance to the rain shielding device, and the drive plate separates two breakwaters through horizontal movable block, and the rainwater in the rain shielding device just can enter into the drain pipe, has ensured the retaining effect of rain shielding device to avoid the water discharge rate in the rain shielding device too fast to lead to the distance between rain shielding device and the air inlet unit too far.
(5) This constant current power supply system is with modularization low tension switchgear can utilize the downhill movement of rain shade to realize scraping the filter screen top through setting up the scraper blade to get rid of the impurity at filter screen top, set up the drive post strip and can utilize the right-hand member of horizontal movable block to realize striking in proper order with a plurality of semicylindrical cooperation strips, the vibration that this striking produced can be transmitted to scraper blade and filter screen on, impel scraper blade and filter screen surface impurity not hard up droing.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an overall partial cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the portion A of FIG. 2 according to the present invention;
FIG. 4 is a partial cross-sectional view of an air intake device according to the present invention;
FIG. 5 is a longitudinal half-sectional view of the rain shade of the present invention;
Fig. 6 is a rear perspective view of the mounting bar of the present invention.
In the figure, 1, a cabinet body, 2, a switch controller, 3, an electromagnet, 4, a matched magnetic block, 5, a slide rheostat, 6, a cooling fan set, 61, a slide speed changer, 7, an air inlet device, 71, a filter screen, 72, an iron control panel, 73, a water absorbing sponge, 731, a fixed sponge, 732, a movable sponge, 8, a rain shielding device, 81, a drain pipe, 82, an installation bar, 821, a scraping plate, 822, a semi-cylindrical matching bar, 83, a shielding plate, 9, a water blocking device, 91, a water blocking plate, 92, a transverse movable block, 921, a driving column bar, 93 and a driving plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the invention provides a modularized low-voltage switch cabinet for a constant-current power supply system, which comprises a cabinet body 1, wherein a switch controller 2 is fixed at the bottom of the inner wall of the cabinet body 1, an electromagnet 3 is electrically connected to the top of the switch controller 2, a matched magnetic block 4 is arranged at the front side of the electromagnet 3, the bottom of the matched magnetic block 4 is fixed with the control end of a sliding rheostat 5, the initial position of the control end of the sliding rheostat 5 is positioned at the integral center of a resistance coil on the sliding rheostat 5, the sliding rheostat 5 is electrically connected with the switch controller 2, namely, one connecting end of the sliding rheostat 5 is connected with one interface of the switch controller 2 through a wire, the control end is connected with the other interface of the switch controller 2 through the wire, a cooling fan group 6 is arranged at the bottom of the sliding rheostat 5, the cooling fan group 6 is fixedly penetrates through the inner wall and the outer wall of the cabinet body 1, a sliding speed changer 61 is electrically connected to the top of the cooling fan group 6, a sliding speed changer 61 is arranged on the sliding speed changer 61, the control end can adjust the rotating speed of the cooling fan group 6 in the moving process, and the control end of the sliding speed changer 61 is fixedly connected with the control end of the sliding rheostat 5 through the control link rod; when the electromagnet 3 is electrified, the front side and the rear side of the matched magnetic block 4 have the same magnetic pole, namely the electromagnet 3 and the matched magnetic block 4 are magnetically repulsed, according to the magnetic field intensity calculation formula H=NxI/Le (H is the magnetic field intensity, the unit is A/m, N is the number of turns of an exciting coil, I is exciting current (measured value), the unit is A, le is the effective magnetic path length of a test sample, the unit is m), the magnetic intensity of the electromagnet 3 is in direct proportion to the current flowing through the cabinet body 1, the current flowing through the cabinet body 1 can change the magnetic strength of the electromagnet 3 correspondingly, so that the repulsive force of the electromagnet 3 to the matched magnet 4 correspondingly changes, the matched magnet 4 moves under the action of the changed repulsive force, the resistance of the sliding rheostat 5 can be changed, a part of resistance change of the switch cabinet due to element loss is balanced, the situation that the current change is overlarge is avoided, the sliding rheostat 5 is controlled to change in resistance through the sliding speed changer 61 to control the radiating effect of the radiating fan group 6 when the matched magnet 4 is matched, and further, a stronger radiating effect is realized when the resistance of the sliding rheostat 5 is enlarged, so that the stability of the internal temperature of the cabinet body 1 is maintained, and the internal temperature of the cabinet body 1 is prevented from being too high or too low to influence normal use.
Preferably, in the embodiment, the top of the cabinet body 1 is provided with an air inlet, an air inlet device 7 is fixed in the air inlet, a filter screen 71 is fixed on the top of the inner wall of the air inlet device 7, the bottom of the filter screen 71 is fixed with a water absorbing sponge 73, air entering the cabinet body 1 can be filtered through the filter screen 71, external impurities are prevented from entering the cabinet body 1, and the water absorbing sponge 73 can absorb liquid water vapor entering the air inside the cabinet body 1 to prevent the water vapor from corroding elements inside the cabinet body 1.
Preferably, in this embodiment, the water absorbing sponge 73 is composed of a fixed sponge 731 and a movable sponge 732, the movable sponge 732 is movably inserted into the side of the fixed sponge 731, and the iron control board 72 is fixed on the side of the movable sponge 732 outside the fixed sponge 731, the iron control board 72 is located on the side of the electromagnet 3 and magnetically adsorbed and connected with the electromagnet 3, the iron control board 72 can be adsorbed by the magnet, the distance between the iron control board 72 and the electromagnet 3 is smaller, the magnetism carried by the electromagnet 3 after being electrified can adsorb the iron control board 72, the iron control board 72 movably penetrates through the inner wall and the outer wall of the side surface of the air inlet device 7, a spring is arranged between the iron control board 72 and the air inlet device 7, when the magnetic adsorption force of the electromagnet 3 to the iron control board 72 is larger than the elastic force of the spring, the iron control board 72 drives the movable sponge 732 to move out of the fixed sponge 731, at this moment, the resistance of the water absorbing sponge 73 to the air is reduced wholly, thereby the air intake amount can be improved, further the heat dissipation effect is enhanced, and the too high temperature inside the cabinet body 1 is prevented from being caused by too large heat emitted by the slide rheostat 5.
Preferably, in the embodiment, the top of the cabinet body 1 is fixed with one end of an elastic telescopic rod, the other end of the elastic telescopic rod is fixed with a rain shielding device 8, the center of the rain shielding device 8 is sunken downwards, a water leakage port is formed in the center of the rain shielding device 8 in a penetrating mode, a drain pipe 81 is arranged at the bottom of the water leakage port, the top of the air inlet device 7 can be shielded through the arrangement of the rain shielding device 8, water is prevented from entering the cabinet body 1 when the switch cabinet is installed outdoors and subjected to rainy weather, meanwhile, the rain shielding device 8 is heavier and descends along with the increase of rainwater stored at the top of the rain shielding device 8, the shielding effect of the rain shielding device 8 on the air inlet device 7 is improved, and part of rainwater in the rain shielding device 8 flows out through the drain pipe 81.
Preferably, in this embodiment, two water blocking devices 9 are disposed at the top of the rain shielding device 8, the water blocking devices 9 include water blocking plates 91, a horizontal movable block 92 and a driving plate 93, the water blocking plates 91 are located at the top of the water leakage opening, one ends of the two water blocking plates 91 in the two water blocking devices 9 are close to each other, the ends of the two water blocking plates 91, which are far away, are fixed with the horizontal movable block 92, the horizontal movable block 92 is slidably mounted at the top of the rain shielding device 8 in a left-right direction, the bottom of the horizontal movable block 92 is provided with the driving opening, the right side of the driving opening is arranged in a slope shape with high left-right direction, the top of the driving plate 93 is located below the right side of the driving opening, the bottom of the driving plate 93 is fixed with the top of the cabinet body 1, by setting the water blocking devices 9, the driving plate 93 separates the two water blocking plates 91 only after the rain shielding device 8 descends to a certain distance, the rainwater in the rain shielding device 8 can enter the drain 81, the effect of the rain shielding device 8 is ensured, and the distance between the water shielding device 8 and the water storage device 8 is avoided.
Preferably, in the embodiment, the bottom of the rain shielding device 8 is fixed with the mounting bar 82, the bottom of the mounting bar 82 is hinged with the scraping plate 821, the scraping plate 821 is arranged in a shape of being higher in front and lower in back, the bottom of the scraping plate 821 is contacted with the top of the filter screen 71, two ends of the mounting bar 82 are positioned at two sides of the rain shielding device 8, a plurality of semi-cylindrical matching bars 822 are fixed at the tops of two ends of the mounting bar 82, a driving column bar 921 is arranged between the plurality of semi-cylindrical matching bars 822 and the rain shielding device 8, the driving column bar 921 is fixed on the transverse movable block 92, the scraping of the top of the filter screen 71 can be realized by utilizing the downward movement of the rain shielding device 8 through the scraping plate 821, so that impurities at the top of the filter screen 71 can be removed, the driving column bar 921 can sequentially collide with the plurality of semi-cylindrical matching bars 822 by utilizing the rightward movement of the transverse movable block 92, and vibration generated by the collision can be transmitted to the scraping plate 821 and the filter screen 71, so that the impurities on the surfaces of the scraping plate 821 and the filter screen 71 are loosened.
Preferably, in the present embodiment, the side of the rain shielding device 8 is fixed with a shielding plate 83, the shielding plate 83 includes a vertical portion and an inclined portion, the vertical portion contacts with the side of the cabinet 1, the inclined portion is located at the bottom of the vertical portion, and the shielding plate 83 is integrally located above the radiator fan unit 6, and by providing the shielding plate 83, the radiator fan unit 6 can be protected from rainwater entering the radiator fan unit 6.
In the specific implementation process, the working principle is that the switch controller 2 is connected with a power transmission end and a plurality of user ends, the switch controller 2 can realize the control of the power of the plurality of user ends, when the current passing through the switch controller 2 changes due to resistance, the current flowing through the electromagnet 3 changes, the magnetism generated by the electromagnet 3 changes, the repulsive force of the electromagnet 3 on the matched magnet 4 changes, the matched magnet 4 drives the control end of the sliding rheostat 5 to move, so as to change the resistance of the sliding rheostat 5, when the repulsive force of the electromagnet 3 on the matched magnet 4 increases, the movement of the matched magnet 4 increases the resistance of the sliding rheostat 5, the resistance change of the sliding rheostat 5 can adjust the resistance inside the whole switch cabinet, so as to realize the automatic adjustment of the current, the constant effect of the current in the circuit is ensured to a certain extent, meanwhile, the connecting rod is driven to slide the control end of the sliding speed changer 61 in the moving process of the matching magnet 4, the fan rotating speed in the fan group 6 changes, the fan rotating speed in the cooling fan group 6 increases when the resistance of the sliding rheostat 5 increases, the fan rotating speed in the cooling fan group 6 decreases, the fan group 6 decreases the resistance, and the temperature in the cooling cabinet 1 is prevented from exceeding the normal temperature range, and the temperature inside the cooling element 1 is prevented;
when the cooling fan set 6 discharges air, the cabinet body 1 is fed through the air inlet device 7, the air entering the interior of the cabinet body 1 passes through the filter screen 71 and the water absorbing sponge 73, the filter screen 71 blocks impurities in the air, the water absorbing sponge 73 adsorbs water vapor in the air, the impurities and the water vapor in the air are prevented from affecting electronic elements in the cabinet body 1, meanwhile, when the magnetism of the electromagnet 3 is increased to the extent that the magnetic adsorption force of the electromagnet 3 on the iron control plate 72 is larger than the spring force, the iron control plate 72 drives the movable sponge 732 to move, the thickness of a part of the area of the water absorbing sponge 73 is reduced, so that the blocking effect of the water absorbing sponge 73 on the air is reduced, the air inlet speed is improved, and as the air discharging speed of the cooling fan set 6 is higher, the heat emitted by the slide rheostat 5 is larger, the air containing the water vapor can not stay in the interior of the cabinet body 1 for a longer time, and the influence on the elements in the cabinet body 1 is smaller;
When the switch cabinet is installed outdoors and encounters rainy days, the rain shielding device 8 can protect the air inlet device 7, rainwater can stay at the top of the rain shielding device 8, the weight of the rain shielding device 8 is increased and descends along with the increase of the rainwater, at the moment, the distance between the rain shielding device 8 and the air inlet device 7 is reduced, the protection effect is improved, when the rain shielding device 8 descends to a certain distance, the top of the driving plate 93 is contacted with the inclined surface on the right side of the driving opening of the transverse movable block 92, and because the transverse movable block 92 continues to move downwards, the driving plate 93 can slide on the inclined surface on the right side of the driving opening, at the moment, the top of the driving plate 93 can generate thrust perpendicular to the inclined surface, the component force of the thrust in the horizontal direction enables the transverse movable block 92 to move horizontally, the transverse movable block 92 drives the water blocking plates 91 to move, at the moment, the two water blocking plates 91 are separated, and the rainwater in the rain shielding device 8 passes through the gap between the two water blocking plates 91 and is discharged through the water discharging pipe 81; when the rain shielding device 8 descends, the scraper 821 is in an inclined state, the top end of the scraper 821 descends, at this time, the bottom end of the scraper 821 moves backwards at the top of the filter screen 71 so as to push impurities at the top of the filter screen 71 backwards, meanwhile, the scraper 821 also shields the top of the air inlet device 7, a complete protection effect is achieved, the driving column bar 921 is driven to move when the horizontal moving block 92 moves horizontally, the driving column bar 921 can collide with a plurality of semi-cylindrical matching bars 822, and the collision kinetic energy can be transmitted to the scraper 821 and the filter screen 71 through the mounting bars 82, so that the impurities on the scraper 821 and the filter screen 71 are enabled to loose and fall off.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1.一种恒流供电系统用模块化低压开关柜，包括柜体(1)，其特征在于：所述柜体(1)的内壁底部固定有开关控制器(2)，所述开关控制器(2)的顶部电性连接有电磁铁(3)，所述电磁铁(3)的前侧设置有配合磁块(4)，所述配合磁块(4)的底部与滑动变阻器(5)的控制端固定，所述滑动变阻器(5)与开关控制器(2)电性连接，所述滑动变阻器(5)底部设置有散热风扇组(6)，所述散热风扇组(6)固定贯穿柜体(1)的内外壁，且散热风扇组(6)顶部电性连接有滑动变速器(61)，所述滑动变速器(61)控制端通过连杆与滑动变阻器(5)的控制端固定。1. A modular low-voltage switch cabinet for a constant current power supply system, comprising a cabinet (1), characterized in that: a switch controller (2) is fixed at the bottom of the inner wall of the cabinet (1), an electromagnet (3) is electrically connected to the top of the switch controller (2), a cooperating magnetic block (4) is provided on the front side of the electromagnet (3), the bottom of the cooperating magnetic block (4) is fixed to the control end of a sliding rheostat (5), the sliding rheostat (5) is electrically connected to the switch controller (2), a cooling fan assembly (6) is provided at the bottom of the sliding rheostat (5), the cooling fan assembly (6) is fixedly penetrated through the inner and outer walls of the cabinet (1), and a sliding gearbox (61) is electrically connected to the top of the cooling fan assembly (6), the control end of the sliding gearbox (61) is fixed to the control end of the sliding rheostat (5) through a connecting rod. 2.根据权利要求1所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述电磁铁(3)与配合磁块(4)磁性相斥。2. A modular low-voltage switchgear for a constant current power supply system according to claim 1, characterized in that: the electromagnet (3) and the cooperating magnetic block (4) are magnetically repulsive. 3.根据权利要求1所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述柜体(1)顶部开设有进气口，进气口的内部固定有进气装置(7)，所述进气装置(7)内壁顶部固定有滤网(71)，所述滤网(71)的底部与吸水海绵(73)固定。3. A modular low-voltage switch cabinet for a constant current power supply system according to claim 1, characterized in that: an air inlet is provided on the top of the cabinet (1), an air inlet device (7) is fixed inside the air inlet, a filter screen (71) is fixed on the top of the inner wall of the air inlet device (7), and the bottom of the filter screen (71) is fixed to an absorbent sponge (73). 4.根据权利要求3所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述吸水海绵(73)由固定海绵(731)和活动海绵(732)构成，所述活动海绵(732)活动插接在固定海绵(731)的侧面，且活动海绵(732)位于固定海绵(731)外部的一侧固定有铁质控制板(72)，所述铁质控制板(72)位于电磁铁(3)侧面且与电磁铁(3)磁性吸附连接，所述铁质控制板(72)活动贯穿进气装置(7)侧面内外壁，且铁质控制板(72)与进气装置(7)之间设有弹簧。4. A modular low-voltage switchgear for a constant current power supply system according to claim 3, characterized in that: the absorbent sponge (73) is composed of a fixed sponge (731) and a movable sponge (732), the movable sponge (732) is movably inserted into the side of the fixed sponge (731), and an iron control plate (72) is fixed on the side of the movable sponge (732) outside the fixed sponge (731), the iron control plate (72) is located on the side of the electromagnet (3) and is magnetically attracted to the electromagnet (3), the iron control plate (72) movably penetrates the inner and outer walls of the side of the air intake device (7), and a spring is provided between the iron control plate (72) and the air intake device (7). 5.根据权利要求3所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述柜体(1)的顶部与弹性伸缩杆一端固定，弹性伸缩杆另一端与遮雨装置(8)固定，所述遮雨装置(8)中心处向下凹陷，且遮雨装置(8)中心处贯穿开设有漏水口，漏水口底部设置有排水管(81)。5. A modular low-voltage switchgear for a constant current power supply system according to claim 3, characterized in that: the top of the cabinet (1) is fixed to one end of an elastic telescopic rod, the other end of the elastic telescopic rod is fixed to a rain shelter (8), the center of the rain shelter (8) is recessed downward, and a water outlet is provided through the center of the rain shelter (8), and a drain pipe (81) is provided at the bottom of the water outlet. 6.根据权利要求5所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述遮雨装置(8)顶部设置有两个挡水装置(9)，所述挡水装置(9)包括挡水板(91)、横向活动块(92)和驱动板(93)，所述挡水板(91)位于漏水口顶部，且两个挡水装置(9)中的两个挡水板(91)相近一端相互接触，两个挡水板(91)相远离的一端与横向活动块(92)固定，所述横向活动块(92)左右向滑动安装在遮雨装置(8)顶部，且横向活动块(92)底部开设有驱动口，驱动口右侧为左高右低的倾斜状设置，所述驱动板(93)顶部位于驱动口右侧下方，底部与柜体(1)顶部固定。6. A modular low-voltage switch cabinet for a constant current power supply system according to claim 5, characterized in that: the top of the rain shelter (8) is provided with two water-blocking devices (9), the water-blocking device (9) includes a water-blocking plate (91), a horizontal movable block (92) and a drive plate (93), the water-blocking plate (91) is located at the top of the water outlet, and the two water-blocking plates (91) in the two water-blocking devices (9) are in contact with each other at their close ends, and the two water-blocking plates (91) are fixed to the horizontal movable block (92) at their far ends, the horizontal movable block (92) is slidably installed on the top of the rain shelter (8) in the left and right directions, and a drive port is opened at the bottom of the horizontal movable block (92), the right side of the drive port is inclined with the left side higher than the right side, the top of the drive plate (93) is located below the right side of the drive port, and the bottom is fixed to the top of the cabinet (1). 7.根据权利要求6所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述遮雨装置(8)底部与安装条(82)固定，所述安装条(82)底部铰接安装有刮板(821)，所述刮板(821)呈前高后低状设置，且刮板(821)底部与滤网(71)顶部接触，所述安装条(82)两端位于遮雨装置(8)两侧，且安装条(82)两端顶部固定有多个半圆柱状配合条(822)，多个所述半圆柱状配合条(822)和遮雨装置(8)之间设置有驱动柱条(921)，所述驱动柱条(921)固定在横向活动块(92)上。7. A modular low-voltage switchgear for a constant current power supply system according to claim 6, characterized in that: the bottom of the rain shelter (8) is fixed to the mounting strip (82), a scraper (821) is hinged to the bottom of the mounting strip (82), the scraper (821) is arranged in a front-high-back-low configuration, and the bottom of the scraper (821) contacts the top of the filter screen (71), the two ends of the mounting strip (82) are located on both sides of the rain shelter (8), and a plurality of semi-cylindrical mating strips (822) are fixed to the top of the two ends of the mounting strip (82), a driving column (921) is provided between the plurality of semi-cylindrical mating strips (822) and the rain shelter (8), and the driving column (921) is fixed on the transverse movable block (92). 8.根据权利要求5所述的一种恒流供电系统用模块化低压开关柜，其特征在于：所述遮雨装置(8)侧面固定有遮挡板(83)，所述遮挡板(83)包含竖直部和倾斜部，竖直部与柜体(1)侧面接触，倾斜部位于竖直部底部，且遮挡板(83)整体位于散热风扇组(6)上方。8. A modular low-voltage switch cabinet for a constant current power supply system according to claim 5, characterized in that: a shield plate (83) is fixed on the side of the rain shield device (8), the shield plate (83) includes a vertical part and an inclined part, the vertical part is in contact with the side of the cabinet body (1), the inclined part is located at the bottom of the vertical part, and the shield plate (83) is located above the cooling fan group (6).
CN202310243205.1A 2023-03-14 2023-03-14 Modularized low-voltage switch cabinet for constant-current power supply system Active CN116191237B (en)

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CN112260090A (en) * 2020-11-01 2021-01-22 黄国兴 Electric power cabinet that heat dispersion is good
CN112701670A (en) * 2021-01-08 2021-04-23 上海着猎电子科技有限公司 Device for adjusting current of resistance protection circuit through magnetic force change

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CN112260090A (en) * 2020-11-01 2021-01-22 黄国兴 Electric power cabinet that heat dispersion is good
CN112701670A (en) * 2021-01-08 2021-04-23 上海着猎电子科技有限公司 Device for adjusting current of resistance protection circuit through magnetic force change

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