CN118969578A - Insulating tube body and fuse for fuse - Google Patents
Insulating tube body and fuse for fuse Download PDFInfo
- Publication number
- CN118969578A CN118969578A CN202411427050.8A CN202411427050A CN118969578A CN 118969578 A CN118969578 A CN 118969578A CN 202411427050 A CN202411427050 A CN 202411427050A CN 118969578 A CN118969578 A CN 118969578A
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- insulating tube
- cavity
- tube body
- fuse
- arc extinguishing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
- H01H85/42—Means for extinguishing or suppressing arc using an arc-extinguishing gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
- H01H2085/388—Means for extinguishing or suppressing arc using special materials
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- Fuses (AREA)
Abstract
The application provides an insulating tube body for a fuse and the fuse, wherein the insulating tube body is provided with a first penetrating cavity, and the penetrating cavity is used for placing melt of the fuse; at least one second penetrating cavity is formed in the wall of the insulating pipe body and communicated with the first penetrating cavity, and the volume of the at least one second penetrating cavity is smaller than that of the first penetrating cavity; at least one second penetrating cavity is filled with an arc extinguishing layer, and the arc extinguishing layer is made of arc extinguishing materials; when the melt starts to melt, the arc extinguishing material in the target penetrating cavity is heated and decomposed, and arc extinguishing gas is generated to blow to the melt in the first penetrating cavity from the connecting port of the target penetrating cavity and the first penetrating cavity, wherein the target penetrating cavity is one of the at least one second penetrating cavity. Therefore, a small amount of arc extinguishing materials are used for pressurizing and blowing an arc to a fused mass fusing part, so that the generated gas quantity is reduced, the total pressure in a pipe body is reduced, and the explosion-proof capacity and breaking capacity of the fuse can be improved.
Description
Technical Field
The application belongs to the technical field of emergency protection devices, and particularly relates to an insulating tube body for a fuse and the fuse.
Background
Currently, insulating tubes are one of the important components of fuses, which function to support or contain the metal melt and the arc suppressing material and to protect the metal melt from external environmental factors. However, the insulating shell of the existing fuse can increase the pressure in the tube due to a large amount of gas generated by gasification of the arc extinguishing material, and the explosion-proof capability of the insulating tube body is low.
Disclosure of Invention
The application provides an insulating tube body for a fuse and the fuse, which are used for reducing the pressure in the tube body and improving the explosion-proof capacity of the insulating tube body.
In a first aspect, the present application provides an insulating tube for a fuse, the insulating tube having a first penetration cavity, the penetration cavity being configured to house a fuse melt; at least one second penetrating cavity is formed in the wall of the insulating pipe body, the at least one second penetrating cavity is communicated with the first penetrating cavity, and the volume of the at least one second penetrating cavity is smaller than that of the first penetrating cavity; the at least one second penetrating cavity is filled with an arc extinguishing layer, and the arc extinguishing layer is made of arc extinguishing materials;
When the melt starts to melt, the arc extinguishing material in the target penetrating cavity is heated to decompose, and arc extinguishing gas is generated to blow the melt in the first penetrating cavity from a connecting port of the target penetrating cavity and the first penetrating cavity, wherein the target penetrating cavity is one of the at least one second penetrating cavity.
In one possible embodiment, the insulating tube body is a hollow cylinder, and the at least one second penetrating cavity is disposed on a tube wall in at least one direction of a positive half axis of a radial X axis of the insulating tube body, a negative half axis of the radial X axis, a positive half axis of a radial Y axis of the insulating tube body, and a negative half axis of the radial Y axis.
In one possible embodiment, the connection openings provided between the second penetration cavities of the at least one second penetration cavity, which are opposite half-shafts, are on different radial cross-sections of the insulating tube body.
In one possible embodiment, the connection openings provided between the second penetration cavities of adjacent half shafts in the at least one second penetration cavity are on the same radial section of the insulating tube body.
In one possible embodiment, at least one predicted fusion point is correspondingly disposed on the melt, and the air outlet direction of the connection port of each second penetration cavity is in the same line with a first predicted fusion point, where the first predicted fusion point is one of the at least one predicted fusion points.
In one possible embodiment, the openings of the at least one second penetration lumen occupy less than or equal to 50% of the surface area of the insulating tube.
In one possible embodiment, the second penetration cavity includes a filling portion and the connection port therein, the filling portion having a diameter larger than the connection port.
In one possible embodiment, the diameter of the connection port is 10% -50% of the diameter of the filling portion.
In a possible embodiment, a sealing layer is further provided in the second penetration cavity, the sealing layer being provided above the arc extinguishing layer for sealing the second penetration cavity.
In a second aspect, the present application provides a fuse comprising a melt and the insulating tube for a fuse of the first aspect, the melt being disposed in a first penetration cavity of the insulating tube.
It can be seen that in the application, firstly, the insulating tube body is provided with a first penetrating cavity for placing the fuse; at least one second penetrating cavity is formed in the wall of the insulating pipe body, the at least one second penetrating cavity is communicated with the first penetrating cavity, and the volume of the at least one second penetrating cavity is smaller than that of the first penetrating cavity; the at least one second penetrating cavity is filled with an arc extinguishing layer, and the arc extinguishing layer is made of arc extinguishing materials; when the melt starts to melt, the arc extinguishing material in the target penetrating cavity is heated to decompose, and arc extinguishing gas is generated to blow the melt in the first penetrating cavity from a connecting port of the target penetrating cavity and the first penetrating cavity, wherein the target penetrating cavity is one of the at least one second penetrating cavity. Therefore, a small amount of arc extinguishing materials are used for extinguishing arc of the melt, so that the generated gas quantity is reduced, the pressure in the tube body is reduced, and the explosion-proof capacity and breaking capacity of the fuse can be improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a first insulating tube according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a second insulating tube according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a third insulating tube according to an embodiment of the present application;
Fig. 4 is a schematic structural view of a fourth insulating tube according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, system, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
A fuse is a protection device based on thermal and triggering effects, and is generally composed of a metal melt, an insulating tube body, terminals and the like. When the current in the circuit exceeds the rated current of the metal melt, the metal melt is heated to generate a melting phenomenon, so that the circuit is cut off, and the overload condition of the circuit caused by the current exceeding the rated value is avoided. The fuse is widely applied to high-low voltage distribution systems, control systems and electric equipment, is used as a protector for short circuit and overcurrent, and is one of the most common protection devices.
The insulating tube body serves as one of important components of the fuse, and functions to support or contain the metal melt and the arc extinguishing material and protect the metal melt from external environmental factors, so that it should have good electrical insulation properties and withstand impact pressure generated during a short circuit current of the fuse, and at the same time should withstand a temporary high temperature generated by the short circuit current. Conventionally, the insulating tube is only one structural component of the fuse product, and has little contribution to improving the breaking capacity of the product. With the improvement of the performance requirements of the power electronics industry on the fuse products, the safety breaking capacity of the fuse products becomes more and more severe, so that the effect of the existing technology for filling quartz sand in the gap between the insulating tube body and the metal melt to extinguish arc on the breaking capacity of the fuse products is difficult to meet the requirements of customers, and a new technology is urgently needed to improve the breaking performance of the fuse products. It goes without saying that if the insulating tube body can be changed into a part of a functional module which can improve the explosion-proof capability of the fuse product only as a protective function of the structural module, the breaking performance of the whole product can be greatly enhanced.
Currently, insulating tubes are one of the important components of fuses, which function to support or contain the metal melt and the arc suppressing material and to protect the metal melt from external environmental factors. However, the insulating shell of the existing fuse can increase the pressure in the tube due to a large amount of gas generated by gasification of the arc extinguishing material, and the explosion-proof capability of the insulating tube body is low.
In order to solve the above problems, an embodiment of the present application provides an insulating tube for a fuse. The insulating tube body for the fuse can be applied to the scene of fuse circuit protection. A first penetration cavity for placing a fuse melt can be formed in the insulating tube body; at least one second penetrating cavity is formed in the wall of the insulating pipe body, the at least one second penetrating cavity is communicated with the first penetrating cavity, and the volume of the at least one second penetrating cavity is smaller than that of the first penetrating cavity; the at least one second penetrating cavity is filled with an arc extinguishing layer, and the arc extinguishing layer is made of arc extinguishing materials; when the melt starts to melt, the arc extinguishing material in the target penetrating cavity is heated to decompose, and arc extinguishing gas is generated to blow the melt in the first penetrating cavity from a connecting port of the target penetrating cavity and the first penetrating cavity, wherein the target penetrating cavity is one of the at least one second penetrating cavity. Therefore, a small amount of arc extinguishing materials are used for pressurizing and blowing an arc to a fused mass fusing part, so that the generated gas quantity is reduced, the pressure in a pipe body is reduced, and the explosion-proof capacity and breaking capacity of the fuse can be improved. The present solution may be applied to a variety of scenarios, including but not limited to the application scenarios mentioned above.
The specific structure will be described in detail.
Referring to fig. 1, the present application provides an insulating tube body 10 for a fuse, where the insulating tube body 10 is provided with a first penetrating cavity 30, and the penetrating cavity is used for placing a fuse melt; at least one second penetrating cavity 20 is formed on the wall of the insulating tube body 10, the at least one second penetrating cavity 20 is communicated with the first penetrating cavity 30, and the volume of the at least one second penetrating cavity 20 is smaller than that of the first penetrating cavity 30; the at least one second penetration cavity 20 is filled with an arc extinguishing layer, which is made of an arc extinguishing material;
When the melt starts to melt, the arc extinguishing material in the target penetration cavity is decomposed by heat, and arc extinguishing gas is generated to blow from the connection port 22 of the target penetration cavity and the first penetration cavity 30 to the melt in the first penetration cavity 30, wherein the target penetration cavity is one of the at least one second penetration cavities 20.
In particular, in this embodiment, a first penetration cavity 30 is formed in the body of the insulating tube 10 to accommodate the melt. The material of the body of the insulating tube 10 may be ceramic, fiberglass threads, melamine or other materials, which are not limited herein. The pipe wall of the insulating pipe body 10 is also provided with a second penetrating cavity 20, an arc extinguishing layer is filled in the second penetrating cavity 20, and the arc extinguishing material in the arc extinguishing layer comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene propylene rubber, or is formed by other materials, and only arc extinguishing gas can be generated without limitation; when abnormal large current passes through the fuse, the surface temperature of the melt can be rapidly increased, and the quartz sand material in the insulating tube body 10 is used for heating the insulating tube body 10, so that the surface temperature of the insulating tube body 10 is increased, and the melt in the fuse starts to fuse after reaching a certain value, and an electric arc is generated; at this time, the surface temperature of the insulating tube body 10 is also sufficient to decompose the arc extinguishing material of the arc extinguishing layer in the second penetrating cavity 20 into carbon dioxide and water vapor by heating, so as to obtain a plurality of gas-mixed arc extinguishing gases, so that the pressure difference between the second penetrating cavity 20 and the first penetrating cavity 30 is increased, and the generated arc extinguishing gases can blow into the first penetrating cavity 30 at a high speed, so that ions and electrons in the arc column region of the arc in the first penetrating cavity 30 are blown out of the arc column, and the diffusion and cooling of particles in the arc are accelerated, thereby facilitating the extinction of the arc.
It can be seen that, in this embodiment, the insulating tube body 10 is used as a part of the explosion-proof component, the second penetrating cavity 20 is disposed on the tube wall of the insulating tube body 10, and the arc extinguishing layer is filled in the second penetrating cavity 20, and only a small amount of arc extinguishing material in the second penetrating cavity 20 generates arc extinguishing gas to perform arc extinguishing, so that the pressure in the insulating tube body 10 is smaller, the explosion-proof capability of the fuse is improved, and the accurate arc extinguishing effect can be achieved.
In one possible embodiment, as shown, the second penetration lumen includes a filling portion 21 and a connection port 22 therein, the filling portion 21 having a larger diameter than the connection port 22.
In a specific implementation, the filling portion 21 may be disposed in the second penetrating cavity 20 to fill the arc extinguishing material, and a connection port 22 is disposed below the filling portion 21, where the connection port 22 may be a channel, and the size of the channel is much smaller than that of the filling portion 21, for example, the diameter of the connection port 22 is 10% -50% of the diameter of the filling portion 21. With this arrangement, when the arc extinguishing gas is generated, the pressure between the second penetration chamber 20 and the first penetration chamber 30 is greater, thereby increasing the speed of the arc extinguishing gas ejected from the connection port 22. That is, the embodiment does not overflow like the traditional melamine gas-producing arc-extinguishing pipe in a dispersed manner, but gathers the generated arc-extinguishing gas into one small hole for spraying, so that the gas spraying pressure is improved, the gas can be sprayed out more quickly, the arc-blowing effect on the arc is more obvious, and the arc is extinguished more favorably.
Further, a sealing layer 23 is further disposed in the second penetrating cavity 20, and the sealing layer 23 is disposed above the arc extinguishing layer and is used for sealing the second penetrating cavity 20. The sealing performance of the second penetrating cavity 20 is enhanced through the sealing layer 23, the second penetrating cavity 20 is isolated from the external environment of the insulating pipe body 10, and the air leakage of the second penetrating cavity 20 is avoided, so that the pressure arc extinguishing gas in the second penetrating cavity 20 can be sprayed out to the first penetrating cavity 30 smoothly, and a good arc extinguishing effect is ensured. The sealing material in the sealing layer 23 may be silicone resin, epoxy resin or other materials, which only needs to meet the sealing requirement of the fuse, and is not limited herein.
For example, assuming that the filling portion 21 is a cylinder with a bottom diameter of 2mm, the connection port 22 is a cylinder with a bottom diameter of 0.3mm, and at this time, the bottom diameter of the connection port 22 is 15% of the filling portion 21. The filling part 21 is filled with an arc extinguishing material to form an arc extinguishing layer, which takes polyvinyl chloride as a main component and is pressed into a cylinder with the diameter of 1.9mm by a dry pressing molding process, wherein the height of the cylinder is about 0.5mm lower than that of the filling part 21; the sealing layer 23 is formed by coating a sealing material, which is a silicone resin paste, on the upper side of the cylindrical body and in the gap between the cylindrical body and the portion 21 to be filled, and is formed by coating the sealing material, and the sealing material is cured after being glued to be flush with the upper surface of the corresponding side surface of the insulating tube body 10, thereby obtaining sufficient sealing strength.
It is to be understood that the shape of the filling portion 21 and the connection port 22 is not limited to a cylinder, and may be a cylinder, a cubic cylinder, or other shapes as long as the effect of improving the gas ejection speed in the present application can be achieved. Similarly, the dimensions of the filling portion 21, the arc extinguishing layer, and the connection port 22 are not limited, and can be freely adjusted according to actual conditions.
After the arc extinguishing material mainly made of flame retardant material is added into the filling part 21 in the second penetrating cavity 20 of the insulating tube body 10, the arc extinguishing material is heated and decomposed to generate gas under the heating effect of short-circuit current of the fuse product. Because the end of the filling portion 21, which is communicated with the outside, is blocked by the sealing layer 23, the generated gas can only move towards the inside of the insulating tube body 10 along the connection port 22, and along with the increase of the generated gas pressure, the gas pressure suddenly drops at the junction of the connection port 22 and the first penetrating cavity 30 of the insulating tube body 10 due to the sudden increase of the volume, and the pressure difference can cause the gas to be rapidly and severely sprayed to the first penetrating cavity 30 of the insulating tube body 10 from the inside of the connection port 22, so that the ions and electrons in the arc column region of the first penetrating cavity 30 are blown away from the arc column region, the diffusion and cooling of the ions are accelerated, and the electric arc can be extinguished more rapidly.
Specifically, the insulating tube body 10 is a hollow cylinder, and the hollow cylinder may be a hollow square cylinder, a hollow cylinder or a hollow cylinder with other shapes, which is not limited herein.
Further, the at least one second penetration cavity 20 is disposed on a pipe wall of at least one of a positive half axis of the radial X-axis of the insulating pipe body 10, a negative half axis of the radial X-axis, a positive half axis of the radial Y-axis of the insulating pipe body 10, and a negative half axis of the radial Y-axis. As shown in fig. 1-3, the radial direction refers to the directions of the X axis and the Y axis, and the axial direction is the direction of the Z axis.
The following is an illustration of a different second penetration lumen 20 arrangement.
Example 1
When there is only one second penetration lumen 20, it can be provided on the wall of the tube in only one orientation, and therefore, no discussion is required. The presence of a plurality of second penetrating lumens 20 (greater than or equal to two) and all disposed on the same azimuthal wall is discussed below.
When the plurality of second penetrating cavities 20 are disposed only on the pipe wall in one direction of the insulating pipe body 10, for example, referring to fig. 2, taking three second penetrating cavities 20 as an example, all three second penetrating cavities 20 are disposed on the pipe wall of the positive half axis of the X-axis in fig. 2; the three second penetrating cavities 20 may be equally spaced on the wall of the positive half axis of the X-axis, or the second penetrating cavities 20 may be spaced at other intervals.
In addition, at least one predicted fusion point is correspondingly arranged on the melt, the air outlet direction of the connecting port 22 of each second penetrating cavity 20 is in the same straight line with the first predicted fusion point, and the first predicted fusion point is one of the at least one predicted fusion points.
In a preferred embodiment, only one predicted fusing point is set for the predicted fusing point, and in an ideal state, the melt is fused only at the predicted fusing point; meanwhile, the connection ports 22 of the three second penetrating cavities 20 are aligned to the predicted fusing point (i.e., the first fusing point), and arc extinguishing gas is respectively sprayed from the three connection ports 22 to the predicted fusing point when the predicted fusing point is fused. Because the arc extinguishing gases sprayed from the same side are the arc extinguishing gases, the three arc extinguishing gases cannot be mutually offset, stronger air flow can be generated at the predicted fusion point, the diffusion and cooling of particles in the electric arc are further accelerated, and the segmentation capability is improved.
Example two
In one possible embodiment, the connection ports 22 provided between the second penetration cavities 20 of the opposite half-shafts in the at least one second penetration cavity are on different radial cross-sections of the insulating tube body 10.
As shown in fig. 3, taking two second penetrating cavities 20 as an example, the two second penetrating cavities 20 are respectively disposed on a positive half axis and a negative half axis (i.e., opposite half axes) of the X-axis, and if the two second penetrating cavities 20 on the opposite half axes are disposed on the same radial cross section, the gas ejected from the connection ports 22 in the two second penetrating cavities 20 will generate opposite impact, at this time, the wind forces will cancel each other, so that electrons and ions in the arc column are difficult to leave the arc range, and the arc extinguishing effect is reduced. Therefore, in this embodiment, the second penetrating cavities 20 disposed on the opposite half-shaft tube walls can be disposed in a staggered manner, i.e. in different radial cross sections, so that the arc extinguishing gases on both sides cannot be hedging, and the arc extinguishing effect is reduced because electrons and ions in the arc column cannot be blown out due to the interaction of the gases when the arc extinguishing materials in the filling portion 21 are decomposed by heat to generate gases and are ejected through the communicating hole portions.
In addition, in this embodiment, at least one predicted fusion point is correspondingly disposed on the melt, and the air outlet direction of the connection port 22 of each second penetration cavity 20 is in the same line with the first predicted fusion point, where the first predicted fusion point is one of the at least one predicted fusion points.
In a preferred embodiment, only one predicted fusing point is set for the predicted fusing point, and in an ideal state, the melt is fused only at the predicted fusing point; meanwhile, the connection ports 22 of the two second penetrating cavities 20 on opposite half shafts are aligned to the predicted fusing point (i.e. the first fusing point), and arc extinguishing gas is respectively sprayed from the three connection ports 22 to the predicted fusing point when the predicted fusing point is fused. Because the arc extinguishing gases are arranged in a staggered way, the two arc extinguishing gases cannot offset each other, and stronger air flow can be generated at the predicted fusion point, so that the diffusion and cooling of particles in an electric arc are further accelerated, and the segmentation capability is improved.
It will be appreciated that not only one second penetration lumen 20 may be provided on each side of the opposite radius, but two, three, or more may be provided, respectively, and the number is not limited herein.
Example III
In one possible embodiment, the connection ports 22 of at least one second penetration lumen 20 that are disposed between the second penetration lumens 20 of adjacent half-shafts are on the same radial cross-section of the insulating tube body 10.
In specific implementation, as shown in fig. 4, taking two second penetrating cavities 20 as an example, the two second penetrating cavities 20 are respectively disposed on a positive half axis of the X axis and a negative half axis of the Y axis (i.e., adjacent half axes), at this time, because the air injection direction of the connection ports 22 is vertical, the two second penetrating cavities 20 on the adjacent half axes will not generate the condition of opposite impact of the arc extinguishing gas even if disposed on the same radial section, and when disposed on the same radial section, the angle of the connection ports 22 may not need to be adjusted, and the two arc extinguishing gases may act on the predicted fusion point a at the same time, further accelerating the diffusion and cooling of particles in the arc, thereby greatly improving the arc extinguishing effect of the design and the segmentation capability.
Two second penetrating cavities 20 may be formed on two adjacent sides of the insulating tube 10, and are preferably disposed at the side positions of the tube wall of the insulating tube 10 corresponding to the expected fusing position of the melt, and the openings of the two connecting ports 22 are both directed toward the predicted fusing point a of the melt, so that the arc extinguishing effect can be greatly improved.
Example IV
Compared to the third embodiment, in this embodiment, two second penetrating cavities 20 in the direction of adjacent half axes may be arranged in a staggered manner, that is, for at least one predicted fusion point a corresponding to the melt, the air outlet direction of the connection port 22 of each second penetrating cavity 20 is in the same line as the first predicted fusion point, and the first predicted fusion point is one of the predicted fusion points a of the at least one predicted fusion point a.
In a preferred embodiment, only one predicted fusing point A is set for the predicted fusing point A, and in an ideal state, the melt is fused at the predicted fusing point A only; meanwhile, the connection ports 22 of the two second penetrating cavities 20 on the adjacent half shafts are aligned to the predicted fusing point a (i.e., the first fusing point), and when the predicted fusing point a fuses, arc extinguishing gas is respectively injected from the two connection ports 22 to the predicted fusing point a. Because the arc extinguishing gases are arranged in a staggered way, the two arc extinguishing gases cannot offset each other, and stronger air flow can be generated at the predicted fusion point A, so that the diffusion and cooling of particles in an electric arc are further accelerated, and the segmentation capability is improved.
In one possible embodiment, the openings of the at least one second penetration lumen 20 occupy less than or equal to 50% of the surface area of the insulating tube body 10.
In particular, the addition of the second penetration cavity 20 has an obvious effect on improving the arc extinguishing performance of the insulating tube body 10, but can reduce the mechanical strength of the insulating tube body 10 itself; that is, the more the second penetrating cavities 20 are disposed, the more holes are dug in the insulating tube 10, so that the structural strength of the insulating tube 10 at the second penetrating cavities 20 is reduced, and the insulating tube 10 is easier to break and damage.
May fracture as the air pressure in the insulating tube 10 increases, and may burst the insulating tube 10 by failing to withstand the explosion pressure generated at the moment of melt fracture. Therefore, the second penetrating cavity 20 is not so much better, and the total area of the second penetrating cavity 20 on the surface area of the insulator should be controlled to be less than 50% of the surface area of the insulator body 10 when the second penetrating cavity 20 is not provided, so that the arc extinguishing requirement can be satisfied, and the explosion-proof capability of the insulator body 10 is also made to be above a certain level.
The application further provides a fuse, and the water heater comprises a melt and the insulating tube body for the fuse, wherein the melt is arranged in the first penetrating cavity of the insulating tube body.
In the embodiment, a first penetrating cavity for placing a fuse is formed in an insulating tube body; at least one second penetrating cavity is formed in the wall of the insulating pipe body, the at least one second penetrating cavity is communicated with the first penetrating cavity, and the volume of the at least one second penetrating cavity is smaller than that of the first penetrating cavity; the at least one second penetrating cavity is filled with an arc extinguishing layer, and the arc extinguishing layer is made of arc extinguishing materials; when the melt starts to melt, the arc extinguishing material in the target penetrating cavity is heated to decompose, and arc extinguishing gas is generated to blow the melt in the first penetrating cavity from a connecting port of the target penetrating cavity and the first penetrating cavity, wherein the target penetrating cavity is one of the at least one second penetrating cavity. Therefore, a small amount of arc extinguishing materials are used for pressurizing and blowing an arc to a fused mass fusing part, so that the generated gas quantity is reduced, the pressure in a pipe body is reduced, and the explosion-proof capacity and breaking capacity of the fuse can be improved.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411427050.8A CN118969578B (en) | 2024-10-14 | 2024-10-14 | Insulating tube body for fuse and fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411427050.8A CN118969578B (en) | 2024-10-14 | 2024-10-14 | Insulating tube body for fuse and fuse |
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| Publication Number | Publication Date |
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| CN118969578A true CN118969578A (en) | 2024-11-15 |
| CN118969578B CN118969578B (en) | 2024-12-27 |
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| CN202411427050.8A Active CN118969578B (en) | 2024-10-14 | 2024-10-14 | Insulating tube body for fuse and fuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120998748A (en) * | 2025-10-23 | 2025-11-21 | 浙江中贝能源科技有限公司 | Vertically installed fuse |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1393568A (en) * | 1971-10-16 | 1975-05-07 | Siemens Ag | Electrical fuse devices |
| CN107919249A (en) * | 2017-12-19 | 2018-04-17 | 西安中熔电气股份有限公司 | A kind of intelligent fuse |
| CN108010823A (en) * | 2017-12-29 | 2018-05-08 | 西安中熔电气股份有限公司 | A kind of fuse of high response speed |
| CN110416038A (en) * | 2019-08-14 | 2019-11-05 | 西安中熔电气股份有限公司 | It is a kind of can interim extinguishing arc high breaking quick response fuse apparatus |
| US10553387B1 (en) * | 2019-02-07 | 2020-02-04 | Littelfuse, Inc. | Fuse with arc-suppressing housing walls |
| WO2024048434A1 (en) * | 2022-09-02 | 2024-03-07 | デクセリアルズ株式会社 | Protective element |
-
2024
- 2024-10-14 CN CN202411427050.8A patent/CN118969578B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1393568A (en) * | 1971-10-16 | 1975-05-07 | Siemens Ag | Electrical fuse devices |
| CN107919249A (en) * | 2017-12-19 | 2018-04-17 | 西安中熔电气股份有限公司 | A kind of intelligent fuse |
| CN108010823A (en) * | 2017-12-29 | 2018-05-08 | 西安中熔电气股份有限公司 | A kind of fuse of high response speed |
| US10553387B1 (en) * | 2019-02-07 | 2020-02-04 | Littelfuse, Inc. | Fuse with arc-suppressing housing walls |
| CN110416038A (en) * | 2019-08-14 | 2019-11-05 | 西安中熔电气股份有限公司 | It is a kind of can interim extinguishing arc high breaking quick response fuse apparatus |
| WO2024048434A1 (en) * | 2022-09-02 | 2024-03-07 | デクセリアルズ株式会社 | Protective element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120998748A (en) * | 2025-10-23 | 2025-11-21 | 浙江中贝能源科技有限公司 | Vertically installed fuse |
| CN120998748B (en) * | 2025-10-23 | 2026-01-27 | 浙江中贝能源科技有限公司 | Vertically installed fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118969578B (en) | 2024-12-27 |
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Address after: No. 188 Zhenglong Road, Youchegang Town, Xiuzhou District, Jiaxing City, Zhejiang Province 314000 Patentee after: Zhejiang Zhongbei Energy Technology Co.,Ltd. Country or region after: China Address before: Building 2, Technology Enterprise Incubator, No. 7 Gongye North 1st Road, Songshan Lake High tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: GUANGDONG ZHONGBEI ENERGY TECHNOLOGY Co.,Ltd. Country or region before: China |