A reusable explosion-proof capacitor

Abstract

The utility model provides a kind of reusable explosion-proof capacitor, belong to capacitor field, it solves the problem that existing explosion-proof capacitor cannot be reused, and capacitor still keeps running after explosion-proof function starts, there is the problem of security risk.The utility model includes shell, shell installs core body, core body is equipped with butt joint column, shell top installs cover plate, cover plate is equipped with installation groove, installation groove installs plug-in block, plug-in block installs pin, limit slot is equipped with the both ends of plug-in block, limit block is installed in limit slot, fracture zone is equipped with the upper limit block, installation groove is equipped with positioning groove, positioning groove both sides are equipped with sliding slot, and blocking plate is installed in sliding slot.The utility model has the advantages that: limit block is fixedly connected with plug-in block and cover plate, limit block is equipped with fracture zone to ensure the minimum pressure intensity when explosion-proof function is started;By setting blocking plate, after plug-in block is ejected, pin and butt joint column cannot be reconnected;By resetting blocking plate and replacing limit block, capacitor reuse is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof capacitors, and relates to a capacitor, and more particularly to a reusable explosion-proof capacitor. Background Technology

[0002] When a capacitor exceeds its service life, excessive self-healing of the metallized film and aging of the polypropylene film under the long-term influence of an electric field generate a lot of heat. The polypropylene and impregnating agent decompose and produce a large amount of gas. The gas increases the internal pressure of the casing, which can lead to an explosion.

[0003] To prevent capacitor explosions, manufacturers have taken various measures, such as setting weak solder joints on the cover plate of the casing. When the gas pressure inside the casing increases, the solder joints break, and the cover plate and the pins rise together, disconnecting the pins from the core and releasing the internal gas, thus eliminating the explosion-proof function. However, this function can only be used once and cannot be reused multiple times. After the gas is released, the cover plate may fall back, causing the pins to connect with the core and the capacitor to continue working, which poses a safety hazard. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a reusable explosion-proof capacitor that prevents the pins and core from reconnecting.

[0005] This utility model can be achieved through the following technical solution: a reusable explosion-proof capacitor, including a housing, a core installed inside the housing, a docking post provided on the core, a cover plate installed on the top of the housing, an installation groove provided on the cover plate, a plug installed in the installation groove, a pin installed on the plug, limit grooves provided at both ends of the plug, limit plates installed in the limit grooves, a positioning groove provided on the installation groove, sliding grooves provided on both sides of the positioning groove, and a barrier plate installed in the sliding groove.

[0006] In the aforementioned reusable explosion-proof capacitor, the barrier plate is made of insulating material, and a cavity is formed inside the barrier plate, with a pull rod connected inside the cavity.

[0007] In the aforementioned reusable explosion-proof capacitor, the pull rod has a limit plate inside the barrier plate, and a spiral block is provided at the other end of the pull rod away from the barrier plate. A spring is provided between the barrier block and the cover plate.

[0008] In the aforementioned reusable explosion-proof capacitor, a slot is provided on the cover plate, a limiting block is installed in the slot, a fixing plate is covered on the limiting block, and a screw passes through the fixing plate.

[0009] In the aforementioned reusable explosion-proof capacitor, a fixing rod is installed on the limiting groove, a fixing groove is opened on the fixing rod, a locking block is installed on the insertion block, and a spring is installed between the locking block and the insertion block.

[0010] In the aforementioned reusable explosion-proof capacitor, the limiting block has a fracture zone and a groove, and the fixing rod has a protrusion corresponding to the groove.

[0011] Compared with the prior art, the advantages of this utility model are as follows: by setting a limiting block to fix the plug and the cover plate together, the limiting block is provided with a break to ensure the minimum pressure when the explosion-proof function is activated; at the same time, by setting a barrier plate, the pins and mating posts will not reconnect after the plug is ejected; by resetting the barrier plate and replacing the limiting block, the capacitor can be reused. Attached Figure Description

[0012] Figure 1 This is a 3D diagram of a reusable explosion-proof capacitor. Figure 2 This is a cross-sectional view of a reusable explosion-proof capacitor. Figure 3 This is a cross-sectional view of the cover plate of a reusable explosion-proof capacitor. Figure 4 This is a 3D view of the plug for a reusable explosion-proof capacitor; Figure 5 This is a 3D view of the mounting rod for a reusable explosion-proof capacitor. The components are as follows: 1. Shell; 2. Core; 21. Connecting post; 3. Cover plate; 31. Mounting groove; 311. Positioning groove; 32. Sliding groove; 33. Slot; 4. Insert block; 41. Pin; 42. Limiting groove; 43. Slot; 431. Spring II; 5. Limiting block; 51. Fracture band; 52. Groove; 6. Barrier plate; 61. Cavity; 7. Pull rod; 71. Limiting plate; 72. Spiral block; 73. Spring I; 8. Fixing plate; 81. Screw; 9. Fixing rod; 91. Fixing groove; 92. Protrusion. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figures 1 to 5As shown, this utility model can be implemented through the following embodiments: A reusable explosion-proof capacitor includes a housing 1, a core 2 installed inside the housing 1, a docking post 21 provided on the core 2, a cover plate 3 installed on the top of the housing 1, an installation groove 31 opened on the cover plate 3, an insert 4 installed in the installation groove 31, a pin 41 installed on the insert 4, a limit groove 42 opened at both ends of the insert 4, a limit plate 71 installed in the limit groove 42, a positioning groove 311 opened on the installation groove 31, sliding grooves 32 opened on both sides of the positioning groove 311, and a barrier plate 6 installed in the sliding groove 32.

[0015] The core 2 is connected to the pin 41 via the docking post 21, thereby enabling power supply; the plug 4 is used to guide the pin 41 and the docking post 21 to connect, and at the same time, the movement of the plug 4 is used to expel the gas in the capacitor; the limiting groove 42 and the limiting block 5 cooperate to fix the cover plate 3 and the plug 4, so that the plug 4 is fixed in the cover plate 3; the positioning groove 311 is used to guide the plug 4 to be inserted; the sliding groove 32 is equipped with a barrier plate 6, which is used to separate the docking post 21 and the pin 41 after the explosion-proof function is activated, to prevent the capacitor from continuing to function after reset, which would cause safety hazards.

[0016] like Figure 2 and Figure 3 As shown, the barrier plate 6 is made of insulating material, and a cavity 61 is formed inside the barrier plate 6. A pull rod 7 is connected inside the cavity 61. The insulating material is used to prevent the barrier plate 6 from becoming a conductor and causing the capacitor with explosion-proof function to continue to work; the pull rod 7 drives the barrier plate 6 to move through the cavity 61.

[0017] like Figures 1 to 3 As shown, the pull rod 7 has a limiting plate 71 inside the barrier plate 6, and a spiral block 72 is provided at the other end of the pull rod 7 away from the barrier plate 6. A spring 73 is provided between the barrier block and the cover plate 3. The limiting plate 71 and the cavity 61 cooperate to pull the barrier plate 6 to move, which facilitates the reset of the barrier plate 6; the spiral block 72 allows the user to drive the pull rod 7 to reset the barrier block, while preventing the pull rod 7 from being driven by the barrier block, which would cause the barrier block to normally block the pin 41 and the docking post 21; the spring 73 is used to cooperate with the cavity 61 to push the barrier plate 6 to block the pin 41 and the docking post 21 after the explosion-proof function is activated.

[0018] like Figures 1 to 3 As shown, a slot 33 is provided on the cover plate 3, and a limiting block 5 is installed in the slot 33. A fixing plate 8 is placed on the limiting block 5, and a screw 81 passes through the fixing plate 8. The limiting block 5 is installed in the slot 33, and the fixing plate 8 is used to fix the cover plate 3 and the limiting plate 71 together, so that the limiting plate 71 fixes the cover plate 3 and the insert 4 together, while preventing the limiting plate 71 from being moved by the insert 4. The screw 81 fixes the fixing plate 8 and the cover plate 3 together, which facilitates the removal of the fixing plate 8 and makes it easy to replace the limiting block 5.

[0019] like Figure 1 and Figure 4 As shown, a fixing rod 9 is installed on the limiting groove 42, and a fixing groove 91 is opened on the fixing rod 9. A locking block 43 is installed on the insert block 4, and a second spring 431 is installed between the locking block 43 and the insert block 4. The fixing rod 9 is used to restrict the limiting block 5 on the insert block 4, so that the limiting plate 71 fixes the cover plate 3 and the insert block 4. The locking block 43 is used to fix the fixing rod 9 on the insert block 4, ensuring that the fixing rod 9 locks the limiting block 5 and prevents the limiting block 5 from disengaging from the limiting groove 42. The second spring 431 is used to keep the locking block 43 locked to the fixing rod 9, and at the same time facilitates pushing the locking block 43 to release it.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the limiting block 5 has a fracture band 51 and a groove 52, and the fixing rod 9 has a protrusion 92 corresponding to the groove 52. The fracture band 51 is provided to disconnect the limiting block 5 when the explosion-proof function is activated, so that the insert 4 is pushed away from the cover plate 3 by the gas inside the housing 1 to release the gas; the groove 52 and the protrusion 92 cooperate to fix the broken limiting block 5 on the insert 4, preventing the limiting block 5 from splashing.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A reusable explosion-proof capacitor, comprising a housing (1) and a core (2) installed inside the housing (1), characterized in that: The core (2) is provided with a docking post (21), the top of the shell (1) is provided with a cover plate (3), the cover plate (3) is provided with an installation groove (31), the installation groove (31) is provided with a plug (4), the plug (4) is provided with a pin (41), the plug (4) is provided with a limit groove (42) at both ends, the limit groove (42) is provided with a limit block (5), the installation groove (31) is provided with a positioning groove (311), the positioning groove (311) is provided with a sliding groove (32) on both sides, and the sliding groove (32) is provided with a baffle plate (6).

2. The reusable explosion-proof capacitor according to claim 1, characterized in that, The barrier plate (6) is made of insulating material, and a cavity (61) is provided inside the barrier plate (6). A pull rod (7) is connected inside the cavity (61).

3. The reusable explosion-proof capacitor according to claim 2, characterized in that, The pull rod (7) has a limit plate (71) inside the barrier plate (6), and a spiral block (72) is provided at the other end of the pull rod (7) away from the barrier plate (6). A spring (73) is provided between the barrier plate (6) and the cover plate (3).

4. The reusable explosion-proof capacitor according to claim 1, characterized in that, The cover plate (3) has a slot (33), and the limiting block (5) is covered with a fixing plate (8), through which screws (81) pass.

5. A reusable explosion-proof capacitor according to claim 4, characterized in that, A fixing rod (9) is installed on the limiting groove (42), a fixing groove (91) is opened on the fixing rod (9), a locking block (43) is installed on the insert block (4), and a spring (431) is installed between the locking block (43) and the insert block (4).

6. The reusable explosion-proof capacitor according to claim 5, characterized in that, The limiting block (5) has a fracture zone (51) and a groove (52), and the fixing rod (9) has a protrusion (92) corresponding to the groove (52).

Images