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CN-224232517-U - Novel explosion-proof capacitor

CN224232517UCN 224232517 UCN224232517 UCN 224232517UCN-224232517-U

Abstract

The utility model discloses a novel explosion-proof capacitor, which comprises an explosion-proof block, an upper cover assembly, a first metal sheet, a second metal sheet and a conducting rod, wherein the explosion-proof block is arranged in a shell of the capacitor, the upper cover assembly is arranged on an opening of the shell of the capacitor and is positioned above the explosion-proof block, the first metal sheet is arranged on the upper cover assembly, the second metal sheet is arranged on the explosion-proof block, the conducting rod is a solid rivet, a limiting boss is annularly arranged on the outer side wall of the conducting rod, the upper end of the conducting rod penetrates through the upper cover assembly from bottom to top, the upper end of the conducting rod is fixedly riveted on the first metal sheet, the limiting boss is abutted to the bottom of the upper cover assembly, the lower end of the conducting rod penetrates through the explosion-proof block from top to bottom, and the lower end of the conducting rod is fixedly welded with the second metal sheet to form an explosion-proof welding spot. From this, through setting up the conducting rod into solid rivet and the locating boss is set up to the ring on the lateral wall of this solid rivet, when the upper end of conducting rod upwards passes upper cover subassembly from the bottom and its upper end riveting is fixed on first sheetmetal, thereby its locating boss butt is this upper cover subassembly's bottom is connected into an organic whole with upper cover subassembly, so need not to set up the hollow rivet in addition and rivet, reduced the use of rivet material, and easy assembly is convenient, assembly accuracy requires lowerly.

Inventors

  • CHEN RONG
  • SHEN JIAHAI
  • Pan Guiqiao

Assignees

  • 胜业电气股份有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (10)

  1. 1. A novel explosion-proof capacitor, comprising: An explosion proof block for mounting within the housing of the capacitor; An upper cover assembly for covering the opening of the case of the capacitor and being positioned above the explosion-proof block; The first metal sheet is arranged on the upper cover assembly, and the second metal sheet is arranged on the explosion-proof block; the upper end of the conductive rod passes through the upper cover assembly from bottom to top, the upper end part of the conductive rod is riveted and fixed on the first metal sheet, the limiting boss is abutted to the bottom of the upper cover assembly, the lower end of the conductive rod passes through the explosion-proof block from top to bottom, and the lower end part of the conductive rod is welded and fixed with the second metal sheet to form an explosion-proof welding point.
  2. 2. The novel explosion-proof capacitor according to claim 1, wherein the upper end of the conducting rod is hollow and fixed on the first metal sheet through a flanging riveting process.
  3. 3. The novel explosion-proof capacitor according to claim 1 or 2, wherein the upper cover assembly comprises a cover plate, a mounting seat positioned at one end of the cover plate opposite to the explosion-proof block, and a base positioned at one end of the cover plate opposite to the explosion-proof block, the first metal sheet is mounted on the mounting seat, and the bottom of the base is abutted against the limiting boss.
  4. 4. The novel explosion-proof capacitor of claim 3, wherein the mounting base comprises a mounting base body and a top cover arranged on the mounting base body in a covering manner, and a mounting groove for mounting the first metal sheet is formed in the top of the mounting base body.
  5. 5. The novel explosion-proof capacitor according to claim 1 or 2, wherein a groove is formed in the bottom of the explosion-proof block, an elastic component is arranged in the groove, and the second metal sheet is arranged on the elastic component.
  6. 6. The novel explosion-proof capacitor of claim 5, wherein the elastic assembly comprises an elastic member and a positioning block arranged up and down, wherein: one end of the elastic piece is abutted against the top wall of the groove, and the other end of the elastic piece is abutted against the top of the positioning block; The second metal sheet is installed at the bottom of the positioning block, the lower end of the conducting rod sequentially penetrates through the explosion-proof block, the elastic piece and the positioning block and is welded with the second metal sheet to form an explosion-proof welding spot, and the positioning block compresses the elastic piece to store elastic potential energy.
  7. 7. The novel explosion-proof capacitor of claim 6, wherein a welding hole welded and fixed with the end part of the lower end of the conducting rod is formed in the middle of the second metal sheet, and two ends of the second metal sheet are limited and fixed at the bottom of the positioning block.
  8. 8. The novel explosion-proof capacitor according to claim 7, wherein limiting holes are formed in two ends of the second metal sheet, limiting columns matched with the limiting holes in a clamping mode are convexly arranged at the bottoms of the positioning blocks, and the second metal sheet is matched with the limiting columns in a clamping mode through the limiting holes to achieve limiting fixation.
  9. 9. A novel explosion-proof capacitor as set forth in claim 1 or 2, further comprising an insulating block secured to the bottom of said explosion-proof block and located below said second metal sheet, said insulating block for separating the explosion-proof weld from the capacitor core.
  10. 10. The novel explosion-proof capacitor according to claim 9, wherein the insulation block and the explosion-proof block are fixed through a riveting structure, a screw structure or a hot melting mode.

Description

Novel explosion-proof capacitor Technical Field The utility model relates to the technical field of capacitors, in particular to a novel explosion-proof capacitor. Background This section provides only background information related to the present application so as to enable those skilled in the art to more thoroughly and accurately understand the present application, and is not necessarily prior art. When the existing capacitor works abnormally due to factors such as manufacturing process, working environment, poor ventilation and the like, excessive gas can be generated in the capacitor, and when the internal air pressure is too high, the capacitor bulges and explodes. The existing explosion-proof design is generally that an explosion-proof block is arranged on a capacitor, the explosion-proof block is positioned between an inner core of the capacitor and a cover plate, a leading-out terminal of the capacitor is assembled and fixed on a cover plate mounting seat through a conductive rivet, and the other end of the conductive rivet penetrates through the explosion-proof block and is welded and fixed with a metal sheet arranged on the explosion-proof block. Therefore, after the permanent breakdown of the core in the capacitor occurs, the generated gas and temperature can cause the pressure in the capacitor to rise, and the gas and temperature act on the cover plate which is easy to deform to enable the cover plate to bulge upwards, so that the explosion-proof welding spots between the rivet and the metal sheet are broken, the inside of the capacitor is opened, and the explosion-proof effect is achieved. The cover plate generally comprises a cover plate body, a mounting seat arranged at the top of the cover plate body and a base arranged at the bottom of the cover plate body, and the cover plate body, the mounting seat and the base are riveted and fixed through a hollow rivet, and meanwhile, the conductive riveting penetrates through the hollow rivet. So set up, because need additionally set up hollow rivet in order to rivet the fixing with the three, not only increased the use of rivet material, and then increased the cost, the assembly is more complicated simultaneously, and this conductive rivet need pass hollow rivet setting, so also has certain requirement to the assembly precision. Disclosure of utility model In order to overcome the defects in the prior art, the utility model provides the novel explosion-proof capacitor, the conducting rod is arranged to be the solid rivet, the limiting boss is arranged on the outer side wall of the solid rivet in a surrounding mode, when the upper end of the conducting rod passes through the upper cover assembly from bottom to top and the upper end part of the conducting rod is riveted and fixed on the first metal sheet, the limiting boss can be abutted to the bottom of the upper cover assembly so as to connect the upper cover assembly into a whole, so that no additional hollow rivet is needed for riveting, the use of rivet materials is reduced, the assembly is simple and convenient, and the assembly precision requirement is lower. The utility model adopts the technical proposal for solving the problems that: A novel explosion-proof capacitor, comprising: An explosion proof block for mounting within the housing of the capacitor; An upper cover assembly for covering the opening of the case of the capacitor and being positioned above the explosion-proof block; The first metal sheet is arranged on the upper cover assembly, and the second metal sheet is arranged on the explosion-proof block; the upper end of the conductive rod passes through the upper cover assembly from bottom to top, the upper end part of the conductive rod is riveted and fixed on the first metal sheet, the limiting boss is abutted to the bottom of the upper cover assembly, the lower end of the conductive rod passes through the explosion-proof block from top to bottom, and the lower end part of the conductive rod is welded and fixed with the second metal sheet to form an explosion-proof welding point. Further, the upper end of the conducting rod is arranged in a hollow mode and is fixed on the first metal sheet through a flanging riveting process. Further, the upper cover assembly comprises a cover plate, a mounting seat and a base, wherein the mounting seat is positioned at one end of the cover plate opposite to the explosion-proof block, the base is positioned at one end of the cover plate opposite to the explosion-proof block, the first metal sheet is mounted on the mounting seat, and the bottom of the base is abutted to the limiting boss. Further, the mounting seat comprises a mounting seat body and a top cover arranged on the mounting seat body in a covering mode, and a mounting groove for mounting the first metal sheet is formed in the top of the mounting seat body. Further, a groove is formed in the bottom of the explosion-proof block, an elastic component is arranged in the groove, and the seco