CN220856237U - Lightning arrester shielding device - Google Patents
Lightning arrester shielding device Download PDFInfo
- Publication number
- CN220856237U CN220856237U CN202321625863.9U CN202321625863U CN220856237U CN 220856237 U CN220856237 U CN 220856237U CN 202321625863 U CN202321625863 U CN 202321625863U CN 220856237 U CN220856237 U CN 220856237U
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- claw
- opening
- shielding
- assembly
- lightning arrester
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- 210000000078 claw Anatomy 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 41
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 16
- 150000004706 metal oxides Chemical class 0.000 description 16
- 238000004891 communication Methods 0.000 description 6
- 208000025274 Lightning injury Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The application relates to the field of high-voltage testing of power systems, in particular to a lightning arrester shielding device. According to the application, the opening and closing assembly comprising the first claw and the second claw which are matched with each other is arranged, the first end of the first claw and the first end of the second claw are hinged, the cylindrical shielding assembly with the side surface provided with the opening is arranged at the lower end of the opening and closing assembly, and the opening corresponds to the opening and closing end of the opening and closing assembly. When the opening and closing component is opened or closed, the shielding component can be opened and closed accordingly. When using this arrester shielding device to carry out arrester leakage current test, the experimenter opens and closes this device through handheld subassembly that opens and shuts, only needs one step just can wrap up the arrester flange, just needs handheld subassembly that opens and shuts equally when dismantling this device, and the action of dismantling can be accomplished in one step operation, has solved shielding device installation and the loaded down with trivial details problem of dismantlement process among the prior art.
Description
Technical Field
The application relates to the field of high-voltage testing of power systems, in particular to a lightning arrester shielding device.
Background
The metal oxide arrester is an important device in a power system and is mainly used for protecting various high-voltage devices in a transformer substation from the interference of lightning and the harm of various overvoltage. When the equipment in the transformer substation normally works, the metal oxide lightning arrester is in a high-resistance state, only microampere-level current flows, and under the condition of high voltage and high current such as lightning stroke, the metal oxide lightning arrester is in a low-resistance state, so that other equipment is protected from being interfered by the lightning stroke. As the service time increases or is affected by factors of working environment, the metal oxide arrester gradually ages, so that the leakage current test of the metal oxide arrester needs to be periodically carried out to judge whether the performance of the metal oxide arrester meets the requirement. But this test is easily received the interference of stray current between arrester flange and the equalizer ring, leads to experimental data to have the error, has influenced the judgement to metal oxide arrester performance, generally uses the insulating boot to wrap up the arrester flange among the prior art, and the insulating boot uses the bandage to fix, and the installation is loaded down with trivial details with the dismantlement process, and work efficiency is lower.
Disclosure of utility model
The application provides a lightning arrester shielding device, which solves the problem that the mounting and dismounting processes of the shielding device are complicated in the metal oxide lightning arrester leakage current test process.
In order to solve the problems, the technical scheme provided by the application is as follows:
in an embodiment of the first aspect, the present application provides a lightning arrester shielding device comprising:
a shielding assembly having a cylindrical shape, a side surface of the shielding assembly having an opening extending from a top end to a bottom end;
The opening and closing assembly comprises a first claw and a second claw, wherein the first end of the first claw is hinged with the first end of the second claw, and the second end of the first claw is matched with the second end of the second claw to form an opening and closing end of the opening and closing assembly; the opening and closing assembly is arranged on the top surface of the shielding assembly, and the opening and closing end corresponds to the position of the opening.
According to the application, the opening and closing assembly comprising the first claw and the second claw which are matched with each other is arranged, the first end of the first claw and the first end of the second claw are hinged, the cylindrical shielding assembly with the side surface provided with the opening is arranged at the lower end of the opening and closing assembly, and the opening corresponds to the opening and closing end of the opening and closing assembly. When the opening and closing component is opened or closed, the shielding component can be opened and closed accordingly. When using this arrester shielding device to carry out arrester leakage current test, the experimenter opens and closes this device through handheld subassembly that opens and shuts, only needs one step just can wrap up the arrester flange, just needs handheld subassembly that opens and shuts equally when dismantling this device, and the action of dismantling can be accomplished in one step operation, has solved shielding device installation and the loaded down with trivial details problem of dismantlement process among the prior art.
In some embodiments, the arrester shielding apparatus further comprises a conductive member disposed within the shielding assembly, the conductive member for connecting a test line; when the lightning arrester shielding device wraps the lightning arrester flange, the conductive piece is lapped on the flange.
In some embodiments, the conductive member is mounted at the bottom of the opening and closing assembly.
In some embodiments, the conductive element comprises a first element and a second element; the first element is arranged at the bottom of the first claw, the second element is arranged at the bottom of the second claw, and when the opening and closing assembly is closed, the first element and the second element form a circular ring shape.
In some embodiments, when the opening and closing assembly is closed, the inner sides of the first claw and the second claw form a cylinder; a first shielding cover is arranged on the top surface of the first claw, a second shielding cover is arranged on the top surface of the second claw, and when the opening and closing assembly is closed, the first shielding cover and the second shielding cover also form a cylinder shape.
In some embodiments, the arrester shielding device further comprises:
The driving assembly comprises a base and a telescopic rod; the base is connected with the first claw through a first connecting piece, the first end of the first connecting piece is hinged with the base at a first hinge point, and the second end of the first connecting piece is hinged with the first claw; the base is connected with the second claw through a second connecting piece, the first end of the second connecting piece is hinged with the base at a second hinge point, and the second end of the second connecting piece is hinged with the second claw; the hinge joint of the first claw and the second claw is marked as a third hinge point, and the second hinge point and the third hinge point are respectively positioned at two sides of the first hinge point; the telescopic rod is installed on the base, and the telescopic end of the telescopic rod is hinged with the third hinge point.
In some embodiments, the drive assembly further comprises a housing, the housing and the base forming a cavity; the shell is provided with a through hole on the side wall close to the opening and closing assembly, and the telescopic rod penetrates through the through hole.
In some embodiments, a test wire interface is provided on a side wall of the housing on a side remote from the opening and closing assembly, and the conductive member is electrically connected to the interface.
In some embodiments, a rigid extension sleeve is provided over the interface.
In some embodiments, the lightning arrester shielding device further comprises a rod, the rod is made of an insulating material, and one end of the rod is connected with the driving assembly.
Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
The methods, systems, and/or programs in the accompanying drawings will be described further in terms of exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments, wherein the exemplary numbers represent like mechanisms throughout the various views of the drawings.
Fig. 1 is a schematic view of a lightning arrester shielding device according to an embodiment of the present application in a closed state.
Fig. 2 is a schematic view of a lightning arrester shielding device according to an embodiment of the present application in an open state.
Fig. 3 is a schematic structural view of a lightning arrester shielding device including a conductive member according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a lightning arrester shielding device including a first shielding case and a second shielding case according to an embodiment of the present application.
Fig. 5 is a schematic structural view of a lightning arrester shielding device including a driving assembly according to an embodiment of the present application.
Fig. 6 is a schematic view of another lightning arrester shielding device including a drive assembly according to an embodiment of the present application.
Fig. 7 is a schematic structural view of a lightning arrester shielding device including a rod according to an embodiment of the present application.
Description of the reference numerals
100-An opening and closing assembly;
101-a first jaw; 102-a second jaw; 103-a third hinge point; 104-an opening and closing end; 105-opening; 106-a first hinge point; 107-a second hinge point;
200-a shielding assembly;
300-conductive member;
301-a first element; 302-a second element;
401-a first shield; 402-a second shield;
500-a drive assembly;
510-a base; 501-a first connector; 502-a second connector;
520-telescopic rod; 530 a driving circuit; 540-a wireless communication unit; 550-a housing; 560-interface; 570-a rigid extension sleeve;
600-bar members; 610-insulating rod;
700-lightning arrester.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship conventionally put in use of the inventive product are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The metal oxide arrester is an important device in a power system and is mainly used for protecting various high-voltage devices in a transformer substation from the interference of lightning and the harm of various overvoltage. When the equipment in the transformer substation normally works, the metal oxide lightning arrester is in a high-resistance state, only microampere-level current flows, and under the condition of high voltage and high current such as lightning stroke, the metal oxide lightning arrester is in a low-resistance state, so that other equipment is protected from being interfered by the lightning stroke. As the service time increases or is affected by factors of working environment, the metal oxide arrester gradually ages, so that the leakage current test of the metal oxide arrester needs to be periodically carried out to judge whether the performance of the metal oxide arrester meets the requirement. But this test is easily received the interference of stray current between arrester flange and the equalizer ring, leads to experimental data to have the error, has influenced the judgement to metal oxide arrester performance, generally uses the insulating boot to wrap up the arrester flange among the prior art, and the insulating boot uses magic subsides or bandage to fix, and installation and dismantlement process are loaded down with trivial details, and work efficiency is lower. In recent years, with the continuous aging of equipment and the continuous increase of system load in a transformer substation, the time required for completing maintenance projects is increasingly longer, and the requirement for rapidly completing the anti-interference work of the metal oxide arrester test is increasingly stronger.
Referring to fig. 1 and 2, in some embodiments, the present application provides an arrester shielding apparatus, comprising: the opening and closing assembly 100 and the shielding assembly 200. The opening and closing assembly 100 comprises a first claw 101 and a second claw 102, wherein the first end of the first claw and the first end of the second claw are hinged at a third hinge point 103, and the second end of the first claw 101 and the second end of the second claw 102 are matched with each other to form an opening and closing end 104 of the opening and closing assembly. The shield assembly 200 is cylindrical in shape with an opening 105 extending from the top end to the bottom end on the side of the shield assembly. The opening and closing assembly 100 is mounted on the top surface of the shielding assembly 200, and the opening and closing end 104 corresponds to the position of the opening 105. In use, a test person holds the opening and closing assembly 100 to open or close, and drives the shielding assembly 200 to open or close along with the opening and closing assembly 100.
In this embodiment, by providing the opening and closing assembly 100 including the first claw 101 and the second claw 102 that are mutually matched, the first end of the first claw 101 and the first end of the second claw 102 are hinged, and then the cylindrical shielding assembly 200 with the opening 105 on the side surface is mounted at the lower end of the opening and closing assembly 100, and the opening 105 corresponds to the opening and closing end 104 of the opening and closing assembly 100 in position. When the shutter assembly 100 is opened or closed, the shielding assembly 200 is opened or closed accordingly. When using this arrester shielding device to carry out arrester leakage current test, carry out simple opening and closing operation through handheld opening and closing subassembly 100, only need one step just can wrap up the arrester flange, when dismantling after the test is accomplished, open it through handheld opening and closing subassembly 100, also only need one step of operation just can realize, solved shielding device installation and the loaded down with trivial details problem of dismantlement process among the prior art.
Specifically, the shielding assembly 200 and the opening and closing assembly are made of insulating materials, the shielding assembly 200 is preferably made of a silicone material, and the opening and closing assembly 100 is preferably made of a plastic material.
Referring to fig. 3, in some embodiments, the lightning arrester shielding device further includes a conductive member 300, where the conductive member 300 is disposed in the shielding assembly 200, and when the lightning arrester shielding device wraps around the flange of the lightning arrester, the conductive member 300 is overlapped on the flange. When the lightning arrester shielding device wraps the lightning arrester flange, the conductive piece 300 is lapped on the flange, and then the test line is connected with the conductive piece 300, so that the communication between the test device and the flange is realized.
Specifically, the conductive member 300 is installed at the bottom of the opening and closing assembly 100. The conductive piece 300 is arranged at the bottom of the opening and closing assembly 100, so that the conductive piece 300 is lapped with the flange due to the gravity of the device when the device wraps the flange, and the electrical communication effect is improved.
Specifically, the conductive member includes a first member 301 and a second member 302, and the first member 301 and the second member 302 are mounted on the bottoms of the first claw 101 and the second claw 102, respectively. When the opening and closing assembly 100 is closed, the bottom surfaces of the first element 301 and the second element 302 form a circular ring shape matched with the flange. The top surface of arrester flange is the ring, and when this embodiment was wrapped up the flange, first element 301 and second element 302 bottom surface formed ring and flange top surface overlap joint, and the contact surface is big, can obtain stable electric current when experimental, has improved test data's stability.
Referring to fig. 4, in some embodiments, when the opening and closing assembly 100 is closed, the inner sides of the first jaw 101 and the second jaw 102 form a cylinder, and a first shielding case 401 and a second shielding case 402 are disposed on top surfaces of the first jaw 101 and the second jaw 102, and when the opening and closing assembly 100 is closed, the first shielding case 401 and the second shielding case 402 form a cylinder.
The first shielding cover 401 and the second shielding cover 402 are arranged at the upper end of the opening and closing assembly, so that the climbing degree of the lightning arrester shielding device can be increased, and the shielding effect is improved.
Referring to fig. 5, in some embodiments, the arrester shielding apparatus further includes a drive assembly 500. The drive assembly 500 includes a base 510 and a telescoping rod 520.
The base 510 is connected to the first jaw 101 and the second jaw 102 by a first connector 501 and a second connector 502, respectively. A first end of the first link 501 is hinged to the base 510 at a first hinge point 106 and a second end of the first link 501 is hinged to the first jaw 101. The first end of the second link 502 is hinged to the base 510 at a second hinge point 107 and the second end of the second link 502 is hinged to the second jaw 202. The first hinge point 106 and the second hinge point 107 are located on both sides of the third hinge point 103. The first end of the telescoping rod 520 is hinged with the first jaw 101 and the second jaw 102 at a third hinge point 103.
In one embodiment, the drive assembly further includes a drive circuit 530 for driving the telescoping rod 520. The test personnel can control the driving circuit 530 to realize the opening and closing operation of the opening and closing assembly 100, thereby further reducing the operation risk. The driving assembly further includes a wireless communication unit 540 for receiving a wireless control signal and controlling the driving circuit 530. The test personnel can control the opening and closing of the opening and closing assembly 100 through a wireless controller. The direct contact of a tester and a lightning arrester shielding device is not needed, and the operation risk is reduced.
It should be noted that the driving circuit 530 and the wireless communication unit 540 are not innovations of the present application, and those skilled in the art can implement the above functions through the prior art means, so that the details are not repeated here.
Referring to fig. 6, in some embodiments, the driving assembly 500 further includes a housing 550, the housing 550 and the base 510 form a cavity, and a through hole is formed in a sidewall of the housing 550 near the opening and closing assembly 100, through which the telescopic rod passes.
With continued reference to fig. 6, a test wire interface 560 is provided on a side wall of the housing 550, and the interface 560 is connected to the conductive member 300.
With continued reference to fig. 6, in some embodiments, the interface 560 is disposed on a side wall of the housing 550 that is distal from the opening and closing assembly 100, and a rigid extension sleeve 570 is disposed on the interface 560. The test wire is connected to the interface 560 through a rigid extension sleeve 570.
The lightning arrester leakage current test is also affected by the stray current generated between the lightning arrester 700 and the test line, and the method for solving the stray current is to increase the distance between the test line and the lightning arrester 700 as much as possible. In this embodiment, the interface 560 is optionally disposed on a side wall of the driving device 500 far away from the opening and closing component, and a hard extension sleeve 570 is additionally installed, so that the test wire passes through the hard extension sleeve 570 and is connected with the interface 560, and the test wire can be led out at an angle perpendicular to the lightning arrester 700, so that the test wire is far away from the lightning arrester 700 as far as possible, and stray current generated between the lightning arrester 700 and the test wire is avoided, thereby eliminating the influence on the test.
Referring to fig. 7, in some embodiments, the lightning arrester shielding device further includes a rod 600 made of an insulating material, and one end of the rod 600 is connected to the driving assembly 500.
The rod 600 may be composed of a plurality of insulating rods 610, and one insulating rod 610 is selected or a plurality of insulating rods 610 are connected to form the rod 600 according to the height of the lightning arrester 700, and the plurality of insulating rods 610 are connected by a plugging manner. The test personnel use member 600 to send the arrester shielding device near arrester 700, control drive assembly 500 will open and shut subassembly 100 and open and close, realize the parcel to the arrester flange, need not to use the aerial working car, got rid of the risk that the test personnel carried out the aerial working.
According to the embodiment provided by the application, the lightning arrester shielding device is sent to the vicinity of the lightning arrester 700 through the rod piece 600, the driving assembly 500 is controlled by the wireless controller to realize the opening and closing of the lightning arrester shielding device, the lightning arrester flange is wrapped, and after the test is finished, the opening and closing of the lightning arrester shielding device are realized by the driving assembly 500 controlled by the wireless controller to dismantle the lightning arrester shielding device. The whole process does not need a tester to contact the lightning arrester shielding case, an overhead working truck is not needed, and the working risk of the tester is reduced. According to the application, the stray current generated between the lightning arrester flange and the grading ring in the test process is shielded by the shielding component 200, the test wire is led out from the angle perpendicular to the lightning arrester 700 by the hard extension sleeve 570, the distance between the test wire and the lightning arrester 700 is increased as much as possible, the stray current generated between the test wire and the lightning arrester 700 is shielded, an anti-interference link is not required to be additionally arranged, the test time is saved, and the test efficiency is improved.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the application, which is defined by the claims and their equivalents.
Claims (10)
1. The lightning arrester shielding device is characterized by comprising:
a shielding assembly having a cylindrical shape, a side surface of the shielding assembly having an opening extending from a top end to a bottom end;
The opening and closing assembly comprises a first claw and a second claw, wherein the first end of the first claw is hinged with the first end of the second claw, and the second end of the first claw is matched with the second end of the second claw to form an opening and closing end of the opening and closing assembly; the opening and closing assembly is arranged on the top surface of the shielding assembly, and the opening and closing end corresponds to the position of the opening.
2. The arrester shielding apparatus of claim 1, further comprising a conductive member disposed within the shielding assembly, the conductive member for connecting a test line; when the lightning arrester shielding device wraps the lightning arrester flange, the conductive piece is lapped on the flange.
3. The lightning arrester shielding device according to claim 2, wherein the conductive member is mounted at a bottom of the opening and closing assembly.
4. A lightning arrester shielding device according to claim 3, wherein the conductive member comprises a first element and a second element; the first element is arranged at the bottom of the first claw, the second element is arranged at the bottom of the second claw, and when the opening and closing assembly is closed, the first element and the second element form a circular ring shape.
5. The lightning arrester shielding apparatus of claim 1, wherein the first claw and the inner side of the second claw form a cylindrical shape when the opening and closing assembly is closed; the top surface of the first claw is provided with a first shielding cover, the top surface of the second claw is provided with a second shielding cover, and when the opening and closing assembly is closed, the first shielding cover and the second shielding cover also form a cylinder shape.
6. The arrester shielding apparatus of claim 2, wherein the arrester shielding apparatus further comprises:
The driving assembly comprises a base and a telescopic rod; the base is connected with the first claw through a first connecting piece, the first end of the first connecting piece is hinged with the base at a first hinge point, and the second end of the first connecting piece is hinged with the first claw; the base is connected with the second claw through a second connecting piece, the first end of the second connecting piece is hinged with the base at a second hinge point, and the second end of the second connecting piece is hinged with the second claw; the hinge joint of the first claw and the second claw is marked as a third hinge point, and the second hinge point and the third hinge point are respectively positioned at two sides of the first hinge point; the telescopic rod is installed on the base, and the telescopic end of the telescopic rod is hinged with the third hinge point.
7. The lightning arrester shielding apparatus of claim 6, wherein the drive assembly further comprises a housing, the housing and the base defining a cavity; the shell is provided with a through hole on the side wall close to the opening and closing assembly, and the telescopic rod penetrates through the through hole.
8. The lightning arrester shielding apparatus of claim 7 wherein a test line interface is provided on a side wall of the housing on a side remote from the opening and closing assembly, the conductive member being electrically connected to the interface.
9. The lightning arrester shielding device according to claim 8, wherein a rigid extension sleeve is provided over the interface.
10. The lightning arrester shielding device according to claim 6, further comprising a rod member, wherein the rod member is made of an insulating material, and wherein one end of the rod member is connected to the driving assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321625863.9U CN220856237U (en) | 2023-06-26 | 2023-06-26 | Lightning arrester shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321625863.9U CN220856237U (en) | 2023-06-26 | 2023-06-26 | Lightning arrester shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220856237U true CN220856237U (en) | 2024-04-26 |
Family
ID=90748664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321625863.9U Active CN220856237U (en) | 2023-06-26 | 2023-06-26 | Lightning arrester shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220856237U (en) |
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2023
- 2023-06-26 CN CN202321625863.9U patent/CN220856237U/en active Active
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