Fuse including arc extinguishing layer and method for preparing fuse including arc extinguishing layer

Abstract

The present application provides a fuse including an arc-extinguishing layer and a method for preparing a fuse including an arc-extinguishing layer, comprising a melt, a first wiring terminal, a second wiring terminal and a tube body provided with a penetration cavity, wherein the penetration cavity is interspersed with the melt and filled with the arc-extinguishing layer; the first wiring terminal and the second wiring terminal are respectively connected to the first end and the second end of the melt, and extend out of the tube body from the first end opening and the second end opening of the penetration cavity respectively; the arc-extinguishing layer comprises a powder material and a colloid material, the powder material comprises quartz sand, a gas-generating material, a flame-retardant material and an auxiliary material; the gas-generating material comprises at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material comprises magnesium silicate; the colloid material comprises at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin.

Description

Technical Field

[0001] The present application belongs to the technical field of emergency protection devices, and specifically relates to a fuse including an arc extinguishing layer and a method for preparing a fuse including an arc extinguishing layer. Background Art

[0002] At present, one of the important challenges facing fuses is their breaking capacity for high DC voltage and high current. It is necessary to use their compact structure and sophisticated design to quickly and current-limitingly complete the breaking of high-voltage DC short-circuit current in a limited space. Generally, fuses with high breaking capacity can reduce arc energy and improve breaking capacity by limiting the arc channel, while shortening the arc burning time and increasing the arc extinguishing speed. In the case of size restrictions, the usual practice is to fill quartz sand inside the fuse housing as an arc extinguishing medium. On the one hand, it can absorb the fault energy in the circuit through processes such as phase change. On the other hand, it can also limit the expansion of the arc channel and increase the arc potential gradient, which is conducive to limiting the fault current.

[0003] However, the limitations of existing technologies in improving the breaking capacity of fuse products have become increasingly prominent in recent years. In particular, the arc extinguishing layer materials of existing fuses are simple and the arc extinguishing capacity is insufficient, which has led to a trend of being unable to meet the performance requirements of electronic and power industry products as short-circuit protection devices. Summary of the invention

[0004] The present application provides a fuse including an arc extinguishing layer and a method for preparing the fuse including the arc extinguishing layer, in order to improve the breaking capacity of the fuse.

[0005] In a first aspect, the present application provides a fuse including an arc-extinguishing layer, including a fuse, a tube body, and a first wiring terminal and a second wiring terminal, wherein the tube body is provided with a penetration cavity, in which a fuse is inserted, the penetration cavity is filled with an arc-extinguishing layer, and the arc-extinguishing layer wraps the fuse; the first wiring terminal is connected to a first end of the fuse and extends out of the tube body from the first end opening of the penetration cavity, and the second wiring terminal is connected to a second end of the fuse and extends out of the tube body from the second end opening of the penetration cavity;

[0006] Wherein, the arc extinguishing layer comprises powder material and colloidal material; the powder material comprises quartz sand, gas-generating material, flame retardant material and auxiliary material;

[0007] The gas-generating material includes at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material includes at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material includes magnesium silicate; the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin.

[0008] In a second aspect, the present application provides a method for preparing a fuse including an arc extinguishing layer, comprising:

[0009] Obtain a processing instruction for the fuse, and perform the following processing according to the processing instruction:

[0010] Welding the first terminal to the first end of the initial melt, and welding the second terminal to the second end of the melt, to obtain a first melt;

[0011] Passing the first terminal and the second terminal of the first fuse through the through-hole of the tube body in sequence, so as to place the first fuse in the through-hole of the tube body, thereby obtaining a first fuse;

[0012] The first fuse is fixed to a sand-vibrating machine, powder material is poured into the penetration cavity from the first filling hole on the first terminal, the sand-vibrating machine is started to vibrate the first fuse to obtain the required compaction density, a powder layer is formed in the penetration cavity, and a second fuse is obtained; wherein the powder material comprises quartz sand, gas-generating material, flame-retardant material and auxiliary material; the gas-generating material comprises at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material comprises magnesium silicate;

[0013] Pressing a plug into the first filling hole to block the first filling hole;

[0014] placing the second fuse in a target container, wherein the target container contains a colloid material, wherein the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin;

[0015] The target container is evacuated, the colloid material is pressed into the powder layer of the second fuse, and an arc extinguishing layer is formed by high-temperature curing to obtain a target fuse.

[0016] In a third aspect, the present application provides an electronic device comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program comprises instructions for executing the steps of the first aspect or the second aspect of the present application.

[0017] In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in the first aspect or the second aspect of the present application.

[0018] In a fifth aspect, the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the first aspect or the second aspect of the present application. The computer program product may be a software installation package.

[0019] It can be seen that in the present application, the fuse containing the arc extinguishing layer adopts the combined effect of the powder material arc extinguishing component and the colloidal material arc extinguishing component, and combines multiple arc extinguishing forms, including the thermal conductivity and melting effect of quartz sand, the hydrogen evolution and electron adsorption of the gas-generating material, the decomposition and pressure increase of the flame retardant material, the bonding effect of the colloidal material and the elastic buffering mechanism of the colloidal material. This greatly improves the filling density and bonding force of the arc extinguishing material in the fuse of the same volume, which is beneficial to preventing the arc channel from expanding radially, improving the breaking capacity of the product, and meeting the growing demand for the breaking capacity of fuse products in the electronic power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a fuse provided in an embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of another fuse provided in an embodiment of the present application;

[0023] Figure 3 It is a flow chart of a method for preparing a fuse provided in an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of a fuse preparation device provided in an embodiment of the present application;

[0025] Figure 5 It is a structural schematic diagram of a fuse preparation device provided in an embodiment of the present application;

[0026] Figure 6 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, systems, products or devices.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] At present, one of the important challenges facing fuses is their breaking capacity for high DC voltage and high current. It is necessary to use their compact structure and sophisticated design to quickly and current-limitingly complete the breaking of high-voltage DC short-circuit current in a limited space. Generally, fuses with high breaking capacity can reduce arc energy and improve breaking capacity by limiting the arc channel, while shortening the arc burning time and increasing the arc extinguishing speed. In the case of size restrictions, the usual practice is to fill quartz sand inside the fuse housing as an arc extinguishing medium. On the one hand, it can absorb the fault energy in the circuit through processes such as phase change. On the other hand, it can also limit the expansion of the arc channel and increase the arc potential gradient, which is conducive to limiting the fault current.

[0031] However, the limitations of existing technologies in improving the breaking capacity of fuse products have become increasingly prominent in recent years. In particular, the arc extinguishing layer materials of existing fuses are simple and the arc extinguishing capacity is insufficient, which has led to a trend of being unable to meet the performance requirements of electronic and power industry products as short-circuit protection devices.

[0032] To solve the above problems, the embodiments of the present application provide a fuse including an arc extinguishing layer and a method for preparing the fuse including an arc extinguishing layer. The fuse can be applied in the scenario of circuit protection. The fuse shown includes a melt, a tube body, a first terminal and a second terminal. The tube body is provided with a penetration cavity, in which the melt is inserted, and the penetration cavity is filled with an arc-extinguishing layer, which wraps the melt; the first terminal is connected to the first end of the melt and extends out of the tube body from the first end opening of the penetration cavity, and the second terminal is connected to the second end of the melt and extends out of the tube body from the second end opening of the penetration cavity; wherein the arc-extinguishing layer includes a powder material and a colloidal material; the powder material includes quartz sand, a gas-generating material, a flame-retardant material and an auxiliary material; the gas-generating material includes at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material includes at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material includes magnesium silicate; the colloidal material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin. The high-breaking performance fuse adopts the combined effect of powder material arc extinguishing components and colloidal material arc extinguishing components, and combines multiple arc extinguishing forms, including the heat conduction and melting effect of quartz sand, the hydrogen evolution of gas-generating materials to absorb electrons, the decomposition of flame-retardant materials to increase pressure, the bonding effect of colloidal materials, and the elastic buffering mechanism of colloidal materials. This greatly improves the filling density and bonding force of arc extinguishing materials in the fuse under the same volume, which is beneficial to prevent the arc channel from expanding radially, improves the breaking capacity of the product, and meets the growing demand for the breaking capacity of fuse products in the electronic power industry. This solution can be applied to a variety of scenarios, including but not limited to the application scenarios mentioned above.

[0033] The specific fuses are introduced in detail below.

[0034] See also Figure 1 and Figure 2 The present application also provides a fuse including an arc extinguishing layer, including a fuse 40, a tube body 10, a first terminal 20 and a second terminal 30, the tube body 10 is provided with a penetration cavity 50, the melt 40 is inserted in the penetration cavity 50, the penetration cavity 50 is filled with an arc extinguishing layer, and the arc extinguishing layer wraps the melt 40; the first terminal 20 is connected to the first end of the melt 40 and extends out of the tube body 10 from the first end opening of the penetration cavity 50, and the second terminal 30 is connected to the second end of the melt 40 and extends out of the tube body 10 from the second end opening of the penetration cavity 50.

[0035] In a specific implementation, the melt 40 is arranged in the penetration cavity 50 of the tube body 10, and the first terminal 20 and the second terminal 30 welded on the melt 40 are exposed at both ends of the penetration cavity 50 of the tube body 10, and the fuse can be connected to the circuit through the first terminal 20 and the second terminal 30. Specifically, the tube body 10 is also filled with an arc extinguishing layer, which is composed of a powder material and a colloid material, wherein the powder material includes quartz sand, a gas-generating material, a flame retardant material and an auxiliary material; the gas-generating material includes at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame retardant material includes at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material includes magnesium silicate; the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin.

[0036] In the present embodiment, a variety of arc extinguishing mechanisms are integrated, including utilizing the high thermal conductivity of quartz sand to quickly cool the arc and absorbing the arc energy by melting the quartz sand; the gas-generating material will release hydrogen at the high temperature generated by the arc, and hydrogen has a good effect on auxiliary arc extinguishing, which can make the free electrons maintaining the arc attach to hydrogen atoms and disappear in the form of negative ions, thereby achieving rapid arc extinguishing; in addition, the flame retardant material decomposes and releases water vapor and carbon dioxide under the high temperature of the arc, thereby increasing the gas pressure inside the tube body 10, increasing the density of charged particles in the tube body 10, reducing the free travel, further strengthening the deionization of electrons in the arc, and accelerating the recombination of ions. The combined effect of multiple mechanisms significantly improves the breaking capacity of the high breaking performance fuse described in this application at the same volume, and can fully meet the customer's requirements for the use of high-performance fuses.

[0037] It is understandable that multiple gas-generating materials can be set in the gas-generating material, and each gas-generating material releases arc-extinguishing gas at a different temperature, so as to avoid the problem that a single gas-generating material does not react in time and affects the arc-extinguishing efficiency. Different colloid materials have different fixing effects and buffering effects, and the corresponding colloid material can be selected according to the specifications of different fuses.

[0038] In a possible embodiment, the weight percentage of the quartz sand in the total weight of the powder material is 50wt%-100wt%, the weight percentage of the gas-generating material in the total weight of the powder material is 0wt%-30wt%, the weight percentage of the flame retardant material in the total weight of the powder material is 0wt%-10wt%, and the weight percentage of the auxiliary material in the total weight of the powder material is 0wt%-30wt%.

[0039] In a specific implementation, the powder material of the arc extinguishing material is a mixture, wherein quartz sand is 50wt%~100wt%, gas-generating material is 0wt%~30wt%, flame retardant material is 0wt%~10wt%, and magnesium silicate is 0wt%~30wt%. The main function of the gas-generating material is that it can release hydrogen at the high temperature generated by the arc. Hydrogen has a good effect on auxiliary arc extinguishing, and can make the free electrons that maintain the arc attached to hydrogen atoms and disappear in the form of negative ions, thereby achieving rapid arc extinguishing. The flame retardant material can decompose and release carbon dioxide and / or water vapor under the high temperature of the arc, thereby increasing the gas pressure inside the tube body 10, increasing the density of charged particles in the tube body 10, reducing the free travel, further strengthening the deionization of electrons in the arc, and accelerating the recombination of ions. The auxiliary material mainly utilizes its excellent properties such as lubrication, anti-sticking, flow-aiding, insulation, and strong adsorption, and plays an irreplaceable role in the mixing uniformity of the arc extinguishing material, and is conducive to increasing the insulation resistance of the fuse product after disconnection.

[0040] Specifically, the fuse of this embodiment may have different structures. The solution of this application is described below through two examples.

[0041] Embodiment 1

[0042] In one possible embodiment, please refer to Figure 1 The first terminal 20 is connected with the first end opening of the through-hole cavity 50, and the second terminal 30 is connected with the second end opening of the through-hole cavity 50; the surface area of ​​the first terminal 20 connected with the first end opening is larger than the surface area of ​​the first end opening, and the surface area of ​​the second terminal 30 connected with the second end opening is larger than the surface area of ​​the second end opening.

[0043] Specifically, at least one first filling hole 21 is provided on the first wiring terminal 20, and the at least one first filling hole 21 is used for filling the powder material.

[0044] In a specific implementation, the powder material is filled through the first filling hole 21 by using a sand shock process, and the colloidal material is filled by using a vacuum process, and the colloidal material to be filled is sucked into the tube body 10 through the gap between the tube body 10 and the first terminal 20 and the second terminal 30 at its two ends. On the one hand, it further fills the stacking gaps between the powder materials, improves the stacking density and bonding force, and is conducive to preventing the arc channel from expanding radially, thereby reducing the cross-sectional area of ​​the arc channel; on the other hand, the elastic characteristics of the colloidal material itself can effectively buffer the impact of the explosion pressure generated by the melt 40 at the moment of abnormal current disconnection on the tube body 10.

[0045] Furthermore, the fuse further includes a plug 70 , and the plug 70 is used to block the first filling hole 21 when the powder material is filled, so as to prevent the powder material from leaking out of the tube body 10 .

[0046] In a specific implementation, the arc extinguishing material inside the fuse is tightly wrapped around the melt 40 after solidification. When the melt 40 melts under an abnormally large current, the melt 40 is disconnected to generate an explosion pressure shock wave. This pressure wave has a huge impact on the granular arc extinguishing material around the melt 40. If this part of the granular material is not fixed, under the action of this shock wave, the particles will continuously collide and transfer kinetic energy until it acts on the tube body 10. When the explosion pressure is too large, it will cause the tube body 10 to explode or burst, causing poor disconnection. In the embodiment of the present application, due to the use of a vacuum process, a colloidal material is injected into the tube body 10 to fill the gaps between the solid particles, thereby greatly reducing the relative movement distance between the particles. After the solid particles are fixed by the colloid, the explosion shock wave must first overcome the bonding effect of the colloid to move the solid particles. The organic colloid on the surface of the tube body 10 has a good elastic effect, which can further buffer the impact of the explosion pressure wave, thereby increasing the upper limit of the disconnection current.

[0047] The fuse further includes at least two first fixing nails 61 and at least two second fixing nails 62. At least two first fixing holes 81 and at least two second fixing holes 82 are provided on the tube body 10. The at least two first fixing holes 81 are respectively provided on the tube body 10 on the first end opening side, and the at least two second fixing holes 82 are respectively provided on the tube body 10 on the second end opening side. The first wiring terminal 20 is located in the penetration cavity 50 on the side of the first fixing hole 81 close to the second end opening direction, and the second wiring terminal 30 is located in the penetration cavity 50 on the side of the second fixing hole 82 close to the first end opening direction. Each first fixing nail 61 fixes the first wiring terminal 20 to the first end of the tube body 10 through a first fixing hole 81; each second fixing nail 62 fixes the first wiring terminal 20 to the second end of the tube body 10 through a second fixing hole 82.

[0048] In the specific implementation, fixing holes are respectively provided at both ends of the tube body 10. After the fuse 40 is placed in the penetration cavity 50, the first fixing nail 61 is inserted into the first fixing hole 81, and the second fixing nail 62 is inserted into the second fixing hole 82, so that the first terminal 20 and the second terminal 30 are respectively clamped at both ends of the penetration cavity 50 of the tube body 10 to fix the first terminal 20, the second terminal 30 and the fuse 40, which is a non-sealed connection to ensure the implementation of the subsequent production process. The structural stability of the fuse is improved.

[0049] For example, the first fixing nail 61 and the second fixing nail 62 can be pins, screws or other nails, which are not limited here. The material of the tube body 10 can be glass fiber wire or ceramic material; the material of the melt 40 is one of pure silver, copper or copper-silver composite material; the first cover plate, the second cover plate, the first terminal, the second terminal and the fixed seal are made of brass or stainless steel. The material of the tube body 10 is a tube body 10 formed by curing and extruding glass fiber after impregnation with resin; the material of the first terminal 20 and the second terminal 30 is brass; the melt 40 is one of pure silver, copper or copper-silver composite material, and is stamped to form the required graphic structure; the pin is made of stainless steel; the material of the plug 70 is brass.

[0050] The preparation process of the fuse including the arc extinguishing layer described in the present application comprises:

[0051] 1) Welding the melt 40 to both ends of the first terminal 20 and the second terminal 30 respectively to obtain a first melt;

[0052] 2) Pass the welded first terminal and the second terminal of the first fuse through the tube body 10 in sequence, so that the corresponding external side surfaces of the first terminal 20 and the second terminal 30 are flush with the end surface of the tube body 10, thereby obtaining a first fuse;

[0053] 3) At least two first fixing holes 81 are evenly distributed at the contact portion between the first end of the tube body 10 of the first fuse and the first terminal 20, and at least two second fixing holes 82 are evenly distributed at the contact portion between the second end of the tube body 10 and the second terminal 30;

[0054] 4) driving the pins (i.e., the first fixing holes 81 and the second fixing holes 82) into the first fixing holes 81 and the second fixing holes 82 drilled on the tube body of the first fuse in step 3) to fix the tube body 10 with the first wiring terminal 20 and the second wiring terminal 30;

[0055] 5) Fix the first fuse after step 4) to the sand jar machine, pour the powder material component in the arc extinguishing material along the first filling hole 21 on the first terminal 20, and vibrate to obtain the required compaction density;

[0056] 6) Press the plug 70 into the first filling hole 21 on the first terminal 20 to prevent the powder material from easily flowing out of the tube body 10, thereby obtaining a second fuse;

[0057] 7) Place the second fuse obtained in step 6) in a container, and pour the colloid material into it until the second fuse completely covers the upper surface of the second fuse in the container, then place the second fuse together with the container into a vacuum box of a vacuum device, start the device to perform a vacuum operation, and maintain the pressure for 10 minutes, take out the second fuse in the container, and clean and wipe off the residual colloid on the surface of the product;

[0058] 8) Use a dispensing machine to apply quick-drying silicone to the gaps between the tube body 10 and the first terminal 20 and the second terminal 30, and solidify them to prevent the internal colloid material from overflowing from the tube body 10 due to volume expansion when solidifying;

[0059] 9) After the colloid material in the arc extinguishing material is cured at high temperature, the following is obtained: Figure 1 Target fuse shown.

[0060] Embodiment 2

[0061] In a possible embodiment, the fuse further includes a first cover plate and at least two third fixing nails 63, at least two third fixing holes 83 and at least one second filling hole 311 are provided on the first cover plate, at least two fourth fixing holes (not shown in the figure) are provided at one end of the tube body 10, each third fixing nail 63 fixes the first cover plate to the first end of the tube body 10 through a third fixing hole 83 and a fourth fixing hole, and the surface area of ​​the first cover plate is larger than the surface area of ​​the first end opening of the penetration cavity 50 of the tube body 10, and the at least one second filling hole 311 is used to fill the powder material.

[0062] Specifically, it includes a second cover plate and at least two fourth fixing nails 64, the second cover plate is provided with at least two fifth fixing holes 85, one end of the tube body 10 is provided with at least two sixth fixing holes 86, each fourth fixing nail 64 fixes the second cover plate to the second end of the tube body 10 through a fifth fixing hole 85 and a sixth fixing hole 86, and the surface area of ​​the second cover plate is larger than the surface area of ​​the second end opening of the penetrating cavity 50 of the tube body 10.

[0063] Furthermore, the fuse also includes a fifth fixing nail 65 and a sixth fixing nail 66, a seventh fixing hole 87 is provided on the first terminal 20, and an eighth fixing hole 88 is provided on the first cover plate 31, and the fifth fixing nail 65 passes through the seventh fixing hole 87 and the eighth fixing hole 88 in sequence to fix the first terminal 20 on the first cover plate 31.

[0064] The second wiring terminal 30 is provided with a ninth fixing hole 89 , the second cover plate 32 is provided with a tenth fixing hole 90 , and the sixth fixing nail 66 passes through the ninth fixing hole 89 and the tenth fixing hole 90 in sequence to fix the second wiring terminal 30 on the second cover plate 32 .

[0065] In the specific implementation, the difference between this embodiment and the first embodiment is that the size of the terminal is smaller than the openings at both ends of the penetration cavity 50, and the openings at both ends of the penetration cavity 50 are sealed by the first cover plate and the second cover plate. Further, corresponding fixing holes are respectively provided on the first cover plate and the second cover plate. After the melt 40 is placed in the penetration cavity 50, the third fixing nail 63 is inserted into the third fixing hole 83 and the fourth fixing hole, the fourth fixing nail 64 is inserted into the fifth fixing hole 85 and the sixth fixing hole 86, the fifth fixing nail 65 is inserted into the seventh fixing hole 87 and the eighth fixing hole 88, and the sixth fixing nail 66 is inserted into the ninth fixing hole 89 and the tenth fixing hole 90, so as to respectively clamp the first terminal 20 and the second terminal 30 in the tube body 10, so as to fix the first terminal 20, the second terminal 30 and the melt 40, which is a non-sealed connection to ensure the implementation of the subsequent production process. The structural stability of the fuse is improved.

[0066] For fuse products with high surge resistance requirements, preferably, the powder material component in the arc-extinguishing material is 100wt% quartz sand, and the colloidal material component in the arc-extinguishing material is phenolic resin solution.

[0067] It can be seen that the fuse described in this embodiment is suitable for occasions with high requirements for surge resistance. In the case of a long product fusing time, in order to reduce the temperature rise of the product, the powder material in the arc extinguishing material is only quartz sand material to prevent the organic or low-temperature components in the arc extinguishing material from decomposing in advance before the fusing condition is reached, thereby losing the arc extinguishing ability. The colloidal material in the arc extinguishing material should be suitable for high temperature resistant occasions, and its function is the same as that of the first embodiment.

[0068] The preparation process of the arc extinguishing layer described in the present application includes:

[0069] 1) Welding the melt 40 to both ends of the first terminal 20 and the second terminal 30 respectively to obtain a first melt;

[0070] 2) The first terminal 20 and the second terminal 30 of the welded first melt are sequentially passed through the tube body 10 to put the first melt into the tube body 10, and then the first cover plate 31 and the second cover plate 32 are respectively placed on the first end and the second end of the tube body 10, and the second filling hole 311 and at least two third fixing holes 83 can be pre-drilled on the first cover plate 31, and at least two fourth fixing holes can be pre-drilled on the second cover plate 32, and then at least two third fixing nails 63 and at least two fourth fixing nails 64 are respectively inserted into the at least two third fixing holes 83 and the at least two fourth fixing holes to fix the first cover plate 31. 1 and the second cover plate 32 are fixed on the tube body 10; in addition, a seventh fixing hole 87 is drilled on the first wiring terminal 20, and an eighth fixing hole 88 is drilled on the first cover plate 31; a ninth fixing hole 89 is drilled on the second wiring terminal 30, and a tenth fixing hole 90 is drilled on the second cover plate 32, and a fifth fixing nail 65 is inserted into the seventh fixing hole 87 and the eighth fixing hole 88 to fix the first cover plate 31 and the first wiring terminal 20 to each other, and a sixth fixing nail 66 is inserted into the ninth fixing hole 89 and the tenth fixing hole 90 to fix the second cover plate 32 and the second wiring terminal 30 to each other, thereby obtaining a first fuse;

[0071] 3) Fix the first fuse after step 2) on the sand jar, pour the powder material component in the arc extinguishing material along the second filling hole 311 on the first cover plate 31, and vibrate to obtain the required compaction density;

[0072] 4) Press the plug 70 into the second filling hole 311 on the first cover plate 31 to prevent the arc extinguishing material from easily flowing out of the tube body 10, thereby obtaining a second fuse;

[0073] 5) Place the second fuse obtained in step 4) into a container, and pour the colloid material into it until it completely covers the upper surface of the product in the container, then place the product and the container into a vacuum box of a vacuum equipment, start the equipment to perform a vacuum operation, and maintain the pressure for 15 minutes, take out the second fuse in the container, and clean and wipe off the residual colloid on the surface of the product; wherein, adjust the vacuum pressure of the equipment to 0.06Pa~100Pa and maintain it for 2min~20min. The 15min selected in this step is only used as an example, and different time selections can be made according to the type of colloid and the number of products filled at one time.

[0074] 6) Use a dispensing machine to apply quick-drying silicone to the gaps between the tube body 10 and the first cover plate 31 and the second cover plate 32, and solidify them to prevent the internal colloid material from overflowing from the tube body 10 due to volume expansion when solidifying;

[0075] 7) After the colloid material in the arc extinguishing material is cured at high temperature, the following is obtained: Figure 2 Target fuse shown.

[0076] It is understandable that the embodiments of the present application are only used for illustration, and the fuse may also have other structures as long as the effect of improving the arc extinguishing capability in the present embodiment is achieved.

[0077] The above is an explanation of the fuse from the structural side, and the following is an explanation from the preparation method aspect.

[0078] See also Figure 3 The present application also provides a method for preparing a fuse including an arc extinguishing layer, comprising:

[0079] Step S301: Obtain a processing instruction for the fuse, and execute steps S3011 to S3016 according to the processing instruction:

[0080] Step S3011, welding the first terminal to the first end of the initial melt, and welding the second terminal to the second end of the melt, to obtain a first melt;

[0081] Step S3012, passing the first terminal and the second terminal of the first fuse through the through-hole of the tube body in sequence, so as to place the first fuse in the through-hole of the tube body, thereby obtaining a first fuse;

[0082] Step S3013, fixing the first fuse to a sand-shaking machine, pouring powder material into the penetration cavity from the first filling hole on the first terminal, starting the sand-shaking machine to vibrate the first fuse to obtain a required compaction density, forming a powder layer in the penetration cavity, and obtaining a second fuse; wherein the powder material comprises quartz sand, a gas-generating material, a flame-retardant material, and an auxiliary material; the gas-generating material comprises at least one of modified urea-formaldehyde resin, polyamide resin, organic glass, and polybutylene terephthalate; the flame-retardant material comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene, and ethylene-propylene rubber; the auxiliary material comprises magnesium silicate;

[0083] Step S3014: Press a plug into the first filling hole to block the first filling hole;

[0084] Step S3015, placing the second fuse in the target container;

[0085] Wherein, the target container contains a colloid material, and the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin;

[0086] Step S3016: evacuate the target container, press the colloidal material into the powder layer of the second fuse, and form an arc extinguishing layer through high-temperature curing to obtain a target fuse.

[0087] See also Figure 4The present application provides a fuse preparation device 100, comprising a control unit 101, a fixture 102 and a mechanical arm 103; the fixture 102 is used to clamp the shell or target melt of the fuse to be prepared, and the mechanical arm 103 is used to adjust the position or posture of the shell or target melt of the fuse to be prepared. The control unit 101 is used to receive a control instruction input by a user, and control the mechanical arm 103 and the fixture 102 according to the control instruction, so that the mechanical arm 103 and the fixture 102 perform corresponding clamping and adjustment operations on the shell or target melt of the fuse to be prepared.

[0088] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that in order to realize the above functions, the mobile electronic device includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiment provided in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0089] The embodiment of the present application can divide the electronic device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0090] See also Figure 5 The present application also provides a fuse manufacturing device 400 including an arc extinguishing layer, comprising:

[0091] An acquisition unit 401 acquires a processing instruction for a fuse;

[0092] The processing unit 402 is used to perform the following processing according to the processing instruction:

[0093] Welding the first terminal to the first end of the initial melt, and welding the second terminal to the second end of the melt, to obtain a first melt;

[0094] Passing the first terminal and the second terminal of the first fuse through the through-hole of the tube body in sequence, so as to place the first fuse in the through-hole of the tube body, thereby obtaining a first fuse;

[0095] The first fuse is fixed to a sand-vibrating machine, powder material is poured into the penetration cavity from the first filling hole on the first terminal, the sand-vibrating machine is started to vibrate the first fuse to obtain the required compaction density, a powder layer is formed in the penetration cavity, and a second fuse is obtained; wherein the powder material comprises quartz sand, gas-generating material, flame-retardant material and auxiliary material; the gas-generating material comprises at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material comprises magnesium silicate;

[0096] Pressing a plug into the first filling hole to block the first filling hole;

[0097] placing the second fuse in a target container, wherein the target container contains a colloid material, wherein the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin;

[0098] The target container is evacuated, the colloid material is pressed into the powder layer of the second fuse, and an arc extinguishing layer is formed by high-temperature curing to obtain a target fuse.

[0099] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium may be a solid-state hard disk.

[0100] The present application also provides an electronic device 600, such as Figure 6 As shown, it includes at least one processor (processor) 601; display screen 602; and memory (memory) 603, and may also include a communications interface (Communications Interface) 605 and a bus 604. Among them, the processor 601, the display screen 602, the memory 603 and the communication interface 605 can communicate with each other through the bus 604. The display screen 602 is configured to display a preset user guide interface in the initial setting mode. The communication interface 605 can transmit information. The processor 601 can call the logic instructions in the memory 603 to execute the method in the above embodiment.

[0101] Optionally, the electronic device 600 may be a mobile electronic device, or an electronic device or other device, which is not limited to any particular device.

[0102] In addition, the logic instructions in the memory 603 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0103] The memory 603, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 601 executes functional applications and data processing by running the software programs, instructions or modules stored in the memory 603, that is, implementing the methods in the above embodiments.

[0104] The memory 603 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the electronic device 600, etc. In addition, the memory 603 may include a high-speed random access memory and may also include a non-volatile memory. For example, a variety of media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, may also be a transient storage medium.

[0105] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps of any method described in the above method embodiments, and the above computer includes an electronic device.

[0106] The embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium storing a computer program, the computer program is operable to cause a computer to execute some or all of the steps of any method described in the method embodiment. The computer program product may be a software installation package, and the computer includes an electronic device.

[0107] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0108] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0109] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0110] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0111] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a volatile memory or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM) and direct RAM bus RAM (DR RAM). Various media that can store program code are available.

[0112] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions without departing from the spirit and scope of the present application, and can make various changes and modifications, including the combination of the above-mentioned different functions and implementation steps, including software and hardware implementation methods, all of which are within the scope of protection of the present application.

Claims

1. A fuse including an arc extinguishing layer, characterized in that: The invention comprises a fuse, a tube body, a first wiring terminal and a second wiring terminal, wherein the tube body is provided with a penetration cavity, the penetration cavity is interspersed with the fuse, the penetration cavity is filled with an arc extinguishing layer, and the arc extinguishing layer wraps the fuse; the first wiring terminal is connected to the first end of the fuse and extends out of the tube body from the first end opening of the penetration cavity, and the second wiring terminal is connected to the second end of the fuse and extends out of the tube body from the second end opening of the penetration cavity; Wherein, the arc extinguishing layer comprises powder material and colloidal material; the powder material comprises quartz sand, gas-generating material, flame retardant material and auxiliary material; The gas generating material includes at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame retardant material includes at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material includes magnesium silicate; the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin; At least one first filling hole is provided on the first wiring terminal, and the at least one first filling hole is used to fill the powder material; wherein the arc extinguishing layer is a whole piece of colloid filled in the penetration cavity, and is formed by the colloid material filling the gaps between the powder material.

2. The fuse according to claim 1, characterized in that: The weight percentage of the quartz sand in the total weight of the powder material is greater than or equal to 50 wt% and less than 100 wt%, the weight percentage of the gas-generating material in the total weight of the powder material is greater than 0 wt% and less than or equal to 30 wt%, the weight percentage of the flame retardant material in the total weight of the powder material is greater than 0 wt% and less than or equal to 10 wt%, and the weight percentage of the auxiliary material in the total weight of the powder material is greater than 0 wt% and less than or equal to 30 wt%.

3. The fuse according to claim 1, characterized in that: The first terminal is connected with the first end opening of the through-hole, and the second terminal is connected with the second end opening of the through-hole; the surface area of ​​the first terminal at the connection with the first end opening is larger than the surface area of ​​the first end opening, and the surface area of ​​the second terminal at the connection with the second end opening is larger than the surface area of ​​the second end opening.

4. The fuse according to claim 1, characterized in that: It also includes a plug, which is used to seal the first filling hole when the powder material is filled.

5. The fuse according to claim 3 or 4, characterized in that: It also includes at least two first fixing nails and at least two second fixing nails, and the tube body is provided with at least two first fixing holes and at least two second fixing holes, the at least two first fixing holes are respectively provided on the tube body at one side of the first end opening, and the at least two second fixing holes are respectively provided on the tube body at one side of the second end opening; The first terminal is located in the through cavity on a side of the first fixing hole close to the opening direction of the second end, and the second terminal is located in the through cavity on a side of the second fixing hole close to the opening direction of the first end; Each first fixing nail fixes the first wiring terminal to the first end of the tube body through a first fixing hole; each second fixing nail fixes the first wiring terminal to the second end of the tube body through a second fixing hole.

6. The fuse according to claim 1, characterized in that: It also includes a first cover plate and at least two third fixing nails, wherein the first cover plate is provided with at least two third fixing holes and at least one second filling hole, and the first end of the tube body is provided with at least two fourth fixing holes, and each third fixing nail fixes the first cover plate to the first end of the tube body through a third fixing hole and a fourth fixing hole, and the surface area of ​​the first cover plate is larger than the surface area of ​​the first end opening of the tube body penetration cavity, and the at least one second filling hole is used for filling the powder material.

7. The fuse according to claim 6, characterized in that: The invention comprises a second cover plate and at least two fourth fixing nails, wherein the second cover plate is provided with at least two fifth fixing holes, and the second end of the tube body is provided with at least two sixth fixing holes, each fourth fixing nail fixes the second cover plate to the second end of the tube body through a fifth fixing hole and a sixth fixing hole, and the surface area of ​​the second cover plate is larger than the surface area of ​​the second end opening of the tube body penetration cavity.

8. The fuse according to claim 7, characterized in that: It also includes a fifth fixing nail and a sixth fixing nail, a seventh fixing hole is provided on the first wiring terminal, an eighth fixing hole is provided on the first cover plate, a ninth fixing hole is provided on the second wiring terminal, and a tenth fixing hole is provided on the second cover plate, the fifth fixing nail fixes the first wiring terminal to the first cover plate through the seventh fixing hole and the eighth fixing hole, and the sixth fixing nail fixes the second wiring terminal to the second cover plate through the ninth fixing hole and the tenth fixing hole.

9. A method for preparing a fuse including an arc extinguishing layer, characterized in that: include: Obtain a processing instruction for the fuse, and perform the following processing according to the processing instruction: Welding a first terminal to a first end of an initial melt, and welding a second terminal to a second end of the initial melt, to obtain a first melt; Passing the first terminal and the second terminal of the first fuse through the through-hole of the tube body in sequence, so as to place the first fuse in the through-hole of the tube body, thereby obtaining a first fuse; The first fuse is fixed to a sand-vibrating machine, powder material is poured into the penetration cavity from the first filling hole on the first terminal, the sand-vibrating machine is started to vibrate the first fuse to obtain the required compaction density, a powder layer is formed in the penetration cavity, and a second fuse is obtained; wherein the powder material comprises quartz sand, gas-generating material, flame-retardant material and auxiliary material; the gas-generating material comprises at least one of modified urea-formaldehyde resin, polyamide resin, organic glass and polybutylene terephthalate; the flame-retardant material comprises at least one of polyolefin, polyvinyl chloride, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene rubber; the auxiliary material comprises magnesium silicate; Pressing a plug into the first filling hole to block the first filling hole; placing the second fuse in a target container, wherein the target container contains a colloid material, wherein the colloid material includes at least one of epoxy resin, phenolic resin, silicone resin and polyimide resin; The target container is evacuated, the colloid material is pressed into the powder layer of the second fuse, and an arc extinguishing layer is formed by high-temperature curing to obtain a target fuse.

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