Safe explosion-proof capacitor

Abstract

The utility model discloses a safe explosion-proof capacitor, which comprises a capacitor main body installed in an explosion-proof assembly, the explosion-proof assembly comprises a half shell I, a half shell II and an installation cover plate, and external threads are integrally formed at the bottoms of the half shell I and the half shell II. Internal threads used in cooperation with the external threads are integrally formed on the inner wall of the circumference of the mounting cover plate, and the capacitor body is arranged in the first half shell and the second half shell. According to the utility model, the half shell I, the half shell II and the mounting cover plate are in threaded connection, so that the half shell I, the half shell II and the mounting cover plate can be conveniently separated and reused after the capacitor main body explodes due to the overload, thereby reducing the use cost; the capacitor core and the mounting cover plate can be fixed by using the elastic force of the spring, the capacitor core can be effectively prevented from shaking up and down relative to the mounting cover plate after being mounted, and the spring can be positioned by arranging the positioning column.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a safe explosion-proof capacitor. Background Art

[0002] In the prior art, a capacitor uses metal foil as an electrode, and overlaps it with a plastic film such as polyethylene, polypropylene, polystyrene or polycarbonate at both ends and is wound into a cylindrical structure. When the capacitor is overloaded during use, it is easy to explode. The fragments generated by the explosion splash onto the circuit board and damage the circuit board. Therefore, it is necessary to design a safe explosion-proof capacitor to effectively improve its explosion-proof performance.

[0003] After searching, the Chinese patent application number 202121355088.0 discloses a safe explosion-proof film capacitor, including an explosion-proof cover, an outer shell and a sealing cover. The explosion-proof cover is fixedly installed on the top of the sealing cover, and heat dissipation ports are evenly distributed on the explosion-proof cover. A mounting sleeve extending into the explosion-proof cover is installed on the sealing cover, and the outer shell is installed in the mounting sleeve. The outer shell is composed of a capacitor core and a lead terminal. An explosion-proof cover is installed between the outer shell and the lead terminal. A chemical fiber mesh cover is installed at the port of the mounting sleeve, and a handheld terminal is installed on the top of the explosion-proof cover through an explosion-proof heat sink.

[0004] The safety explosion-proof capacitor in the above patent has the following disadvantages: the explosion-proof cover and the sealing cover are fixed by welding rings, so that when the capacitor explodes, it is not convenient to quickly clean the exploded capacitor from the explosion-proof cover to achieve the reuse of the explosion-proof cover. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a safe explosion-proof capacitor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A safe explosion-proof capacitor comprises a capacitor body installed in an explosion-proof component, wherein the explosion-proof component comprises a first half shell, a second half shell and a mounting cover plate, wherein the bottoms of the first half shell and the second half shell are integrally formed with external threads, the circumferential inner wall of the mounting cover plate is integrally formed with internal threads used in conjunction with the external threads, and the capacitor body is built into the first half shell and the second half shell.

[0008] As a further solution of the utility model: the capacitor body includes a lead terminal and a capacitor core, the lead terminal is electrically connected to the bottom of the capacitor core, and a socket adapted to the outer diameter of the lead terminal is opened on the surface of the mounting cover.

[0009] As a further solution of the utility model: a pair of positioning grooves are provided on one side wall of the half shell, and a positioning block is integrally formed on the outer wall of one side of the second half shell, and the positioning block and the positioning groove are adapted to each other.

[0010] As a further solution of the utility model: a positioning column is welded on the inner wall of the top of the half shell, and a spring is installed between the positioning column and the capacitor core by insertion.

[0011] As a further solution of the utility model: the threaded connection between the half shell one, the half shell two and the installation cover plate is fixed for a second time by means of glue sealing, the top of the installation cover plate is provided with an annular slide groove, and the inner wall of the annular slide groove is movably connected with a slider, and the top of the slider is movably connected with a scraper head.

[0012] As a further solution of the utility model: the through holes opened at the top of the half shell one and the half shell two are both embedded with dust filters.

[0013] As a further solution of the utility model: the outer circumferential wall of the installation cover plate is integrally formed with a friction protrusion.

[0014] As a further solution of the utility model: handles are integrally formed on the tops of the half shell one and the half shell two.

[0015] Compared with the prior art, the utility model provides a safe explosion-proof capacitor, which has the following beneficial effects:

[0016] 1. By threading the half shell one, the half shell two and the mounting cover plate, when the capacitor body explodes due to overload, the half shell one, the half shell two and the mounting cover plate can be easily separated and reused, thereby reducing the use cost.

[0017] 2. The elastic force of the spring can be used to fix the capacitor core and the mounting cover plate, which can effectively prevent the capacitor core from shaking up and down relative to the mounting cover plate after installation. The spring can be positioned by providing a positioning column.

[0018] 3. When the half shell one, half shell two and the installation cover need to be separated after being glue-sealed, rotate the scraper head until the blade contacts the glue seal, slide the slider along the annular groove, and use the scraper head to remove the glue to facilitate the separation of the half shell one, half shell two and the installation cover.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a safe explosion-proof capacitor proposed by the utility model;

[0021] Figure 2 A schematic diagram of the overall explosion structure of a safe explosion-proof capacitor proposed by the utility model;

[0022] Figure 3 A schematic diagram of a local explosion structure of a safe explosion-proof capacitor proposed by the utility model;

[0023] Figure 4 A schematic diagram of a capacitor body fixing structure of a safe explosion-proof capacitor proposed by the utility model;

[0024] Figure 5 The utility model is a schematic diagram of a safe and explosion-proof capacitor installation cover structure.

[0025] In the figure: 1, half shell one; 2, dust filter; 3, handle; 4, half shell two; 5, scraper head; 6, friction protrusion; 7, lead terminal; 8, positioning groove; 9, positioning block; 10, capacitor core; 11, spring; 12, positioning column; 13, installation cover; 14, slider; 15, annular slide groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1

[0028] A safe explosion-proof capacitor, such as Figures 1 to 5 As shown, it includes a capacitor body installed in an explosion-proof component, and the explosion-proof component includes a half shell 1, a half shell 2 4 and a mounting cover 13. The bottoms of the half shell 1 and the half shell 2 4 are integrally formed with external threads, and the inner wall of the circumference of the mounting cover 13 is integrally formed with internal threads used in conjunction with the external threads, and the capacitor body is built inside the half shell 1 and the half shell 2 4;

[0029] The half shell 1 and the half shell 2 4 are aligned with each other to form a complete cylindrical structure, and the capacitor body is accommodated by the cylindrical structure. The half shell 1 and the half shell 2 4 are made of metal and have explosion-proof performance. When the capacitor body explodes due to excessive overload, the half shell 1 and the half shell 2 4 are used to block the fragments generated by the explosion to avoid the danger of the fragments splashing;

[0030] When it is necessary to fix the half shell 1 and the half shell 2 4, after aligning the half shell 1 and the half shell 2 4, the installation cover 13 is threadedly connected between the internal thread of its circumferential inner wall and the external thread at the bottom of the half shell 1 and the half shell 2 4, so that the installation cover 13 is used to lock and limit the half shell 1 and the half shell 2 4. When the capacitor body explodes, the installation cover 13 is separated from the half shell 1 and the half shell 2 4, so that the explosion-proof component can be installed on the new capacitor body again, thereby realizing the reuse of the explosion-proof component and reducing the use cost.

[0031] Furthermore, the capacitor body includes a lead terminal 7 and a capacitor core 10, the lead terminal 7 is electrically connected to the bottom of the capacitor core 10, and a socket matching the outer diameter of the lead terminal 7 is provided on the surface of the mounting cover 13;

[0032] During installation, the lead terminal 7 is inserted into the insertion hole provided on the surface of the installation cover 13, so as to position the capacitor body during installation.

[0033] Furthermore, a positioning column 12 is welded on the inner wall of the top of the half shell 1, and a spring 11 is installed between the positioning column 12 and the capacitor core 10 by insertion;

[0034] The elastic force of the spring 11 can be used to fix the capacitor core 10 and the mounting cover 13, which can effectively prevent the capacitor core 10 from shaking up and down relative to the mounting cover 13 after installation. The spring 11 can be positioned by providing a positioning column 12.

[0035] Furthermore, the through holes opened at the top of the half shell 1 and the half shell 2 4 are both embedded with dust filters 2;

[0036] By providing the dust filter 2, the capacitor body can be cooled when the capacitor body is working. At the same time, the dust filter 2 can isolate external dust and improve the dust prevention effect.

[0037] Furthermore, a positioning groove 8 is provided on the side wall of the half shell 1, and a positioning block 9 is integrally formed on the outer wall of one side of the half shell 2 4, and the positioning block 9 and the positioning groove 8 are adapted to each other;

[0038] In order to improve the efficiency of the docking between the half shell 1 and the half shell 2 4, when the half shell 1 and the half shell 2 4 are docked, the positioning block 9 is inserted into the positioning groove 8 so that the half shell 1 and the half shell 2 4 are quickly aligned.

[0039] Furthermore, the outer circumferential wall of the mounting cover plate 13 is integrally formed with a friction protrusion 6;

[0040] By providing the friction protrusion 6, when the installation cover plate 13 rotates along the bottom of the half shell 1 and the half shell 2 4, the friction between the hand and the installation cover plate 13 can be increased to prevent the hand from slipping.

[0041] Furthermore, the tops of the half shell 1 and the half shell 2 4 are both integrally formed with a handle 3;

[0042] When the installation cover plate 13 and the half shell 1 and the half shell 2 4 need to be threadedly connected, since the outer walls of the half shell 1 and the half shell 2 4 are both curved surfaces, the handle 3 can be used to ensure that the hand and the half shell 1 and the half shell 2 4 are not slipped after contact during the connection.

[0043] Working principle: first, insert the lead terminal 7 of the capacitor body into the jack opened on the surface of the installation cover 13, then connect the half shell 1 and the half shell 2 4 through the positioning groove 8 and the positioning block 9 and threadedly connect them with the installation cover 13. Before connection, use the positioning column 12 and the spring 11 to limit the position between the capacitor core 10 and the installation cover 13. When the capacitor body is overloaded and explodes, the half shell 1 and the half shell 2 4 are used to block the fragments produced by the explosion.

[0044] Example 2

[0045] A safe explosion-proof capacitor, in order to further improve the connection stability between the half shell 1, the half shell 2 4 and the mounting cover 13, such as Figures 1 to 5 As shown, this example makes the following supplements on the basis of Example 1: the threaded connection between the half shell 1, the half shell 2 4 and the mounting cover plate 13 is fixed for a second time by means of glue sealing;

[0046] After the half shell 1, the half shell 2 4 and the mounting cover plate 13 are threadedly connected, glue is applied to the connection to further ensure the stability after the connection.

[0047] Furthermore, an annular slide groove 15 is provided on the top of the mounting cover plate 13, and a slider 14 is slidably connected to the inner wall of the annular slide groove 15, and a scraping blade 5 is rotatably connected to the top of the slider 14;

[0048] When it is necessary to separate half shell 1, half shell 2 4 and the mounting cover 13, the scraper head 5 is rotated until the blade contacts the glue seal, and then the slider 14 is slid along the annular groove 15 to remove the glue using the scraper head 5, thereby facilitating the separation of half shell 1, half shell 2 4 and the mounting cover 13.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safe explosion-proof capacitor, comprising a capacitor body installed in an explosion-proof assembly, characterized in that: The explosion-proof assembly comprises a half shell (1), a half shell (4) and a mounting cover (13); the bottoms of the half shell (1) and the half shell (4) are integrally formed with external threads; the circumferential inner wall of the mounting cover (13) is integrally formed with internal threads used in conjunction with the external threads; and the capacitor body is built into the interior of the half shell (1) and the half shell (4).

2. A safe explosion-proof capacitor according to claim 1, characterized in that: The capacitor body comprises a lead terminal (7) and a capacitor core (10); the lead terminal (7) is electrically connected to the bottom of the capacitor core (10), and a plug hole matching the outer diameter of the lead terminal (7) is provided on the surface of the mounting cover plate (13).

3. A safe explosion-proof capacitor according to claim 2, characterized in that: A positioning groove (8) is provided on the side wall of the first half shell (1), and a positioning block (9) is integrally formed on the outer wall of one side of the second half shell (4), and the positioning block (9) and the positioning groove (8) are adapted to each other.

4. A safe explosion-proof capacitor according to claim 3, characterized in that: A positioning column (12) is welded to the inner wall of the top of the half shell (1), and a spring (11) is installed between the positioning column (12) and the capacitor core (10) by insertion.

5. A safe explosion-proof capacitor according to claim 4, characterized in that: The threaded connection between the half shell one (1), the half shell two (4) and the mounting cover plate (13) is fixed for a second time by means of glue sealing, the mounting cover plate (13) is provided with an annular slide groove (15) on the top, and a slider (14) is movably connected to the inner wall of the annular slide groove (15), and a scraper head (5) is movably connected to the top of the slider (14).

6. A safe explosion-proof capacitor according to claim 5, characterized in that: The through holes opened on the tops of the half shell one (1) and the half shell two (4) are both embedded with dust filter nets (2).

7. A safe explosion-proof capacitor according to claim 6, characterized in that: The circumferential outer wall of the installation cover plate (13) is integrally formed with a friction protrusion (6).

8. A safe explosion-proof capacitor according to claim 7, characterized in that: The tops of the half shell one (1) and the half shell two (4) are both integrally formed with a handle (3).

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