CN220569546U

CN220569546U - Explosion-proof structure of capacitor

Info

Publication number: CN220569546U
Application number: CN202322070633.7U
Authority: CN
Inventors: 胡忠胜; 吕锡春; 余淼; 毛彬彬; 裘伟
Original assignee: Anhui Feida Electrical Technology Co ltd
Current assignee: Anhui Feida Electrical Technology Co ltd
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2024-03-08
Anticipated expiration: 2033-08-03

Abstract

The utility model discloses an explosion-proof structure of a capacitor, which relates to the technical field of capacitors and is characterized by comprising the following components: the utility model relates to a capacitor, in particular to a capacitor, which comprises a rod core, a panel and an explosion-proof sheet, wherein the rod core is insulated and vertically fixed on the inner side of an end cover of a capacitor, the inner side of the end cover is provided with an edge which is arched downwards, an accommodating cavity for accommodating the panel is formed around the edge, a through hole for the rod core to pass through and a conductive metal block which is inserted on the panel are arranged on the panel, a capacitor connecting terminal is electrically connected with the conductive metal block, the capacitor core is electrically connected with the explosion-proof sheet, the explosion-proof sheet is arranged on the bottom side of the panel and seals the bottom of the through hole, and is made of conductive materials and is lapped with the conductive metal block.

Description

Explosion-proof structure of capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to an explosion-proof structure of a capacitor.

Background

The capacitor is an element for storing electric quantity and electric energy, since the capacitor is a container, the electric energy which can be stored in the capacitor is limited, and the capacitor is influenced by factors such as operating voltage, operating current, ambient temperature, power grid harmonic wave and the like in the use process, so that the capacitor core is at risk of breakdown, and a great amount of gas is released from the broken core, and the gas is accumulated in the capacitor to cause the explosion risk of the capacitor.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides an explosion-proof structure of a capacitor.

The utility model provides a condenser explosion-proof structure, the condenser has shell, end cover, core and connecting terminal, and the core is installed in the shell, and the end cover shutoff is at shell opening part and install connecting terminal, specifically includes: the explosion-proof plate is characterized by comprising a rod core, a panel and an explosion-proof plate, wherein the rod core is insulated and vertically fixed on the inner side of an end cover, an edge which is arched downwards is arranged on the inner side of the end cover, a containing cavity for placing the panel is formed by encircling the edge, the panel is horizontally arranged and assembled in the containing cavity in a sliding mode, a through hole for the rod core to pass through and a conductive metal block which is inserted on the panel are formed in the panel, the connecting terminal is electrically connected with the conductive metal block, the core is electrically connected with the explosion-proof plate, the explosion-proof plate is arranged on the bottom side of the panel and seals the bottom of the through hole, the explosion-proof plate is made of conductive materials and is lapped with the conductive metal block, and when the panel moves upwards due to gas expansion, the explosion-proof plate can be propped away from the panel by the rod core to disconnect the conductive metal block, so that the core and the connection terminal is disconnected.

As a further optimization of the above solution, a space for vertical movement of the panel is reserved between the panel and the end cap.

As a further refinement of the above, the panel edge-to-edge dynamic seal is provided.

As a further optimization of the scheme, a gap is reserved between the outer wall of the rod core and the inner wall of the through hole so that gas can flow into the accommodating cavity after the explosion-proof piece is jacked up.

As a further refinement of the above, the edge base has a flange extending horizontally in the direction of the center of the receiving space for the attachment of the panels.

As a further optimization of the above scheme, the connecting terminals are connected with the conductive metal blocks through flexible wires.

As a further optimization of the scheme, an insulator is further arranged at the joint of the connecting terminal and the end cover.

1. According to the explosion-proof structure of the capacitor, disclosed by the utility model, the explosion-proof piece is separated by pushing the panel by using the gas generated by breakdown of the core body, so that the core body is disconnected from the electric connection terminal, the capacitor is blocked from continuously working, and the explosion caused by continuously generating more gas in the capacitor is avoided.

2. According to the explosion-proof structure of the capacitor, after the panel is jacked by the gas to cause the explosion-proof piece to be separated, the gas can enter the accommodating cavity along the through hole, so that the originally accumulated gas becomes dispersed, the gas pressure is reduced, and the risk of explosion of the capacitor is further reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of an explosion-proof structure of a capacitor according to the present utility model.

Detailed Description

Referring to fig. 1, a general structure of a capacitor according to the present embodiment is: the novel high-voltage power supply comprises a shell 100, an end cover 200, a core 300 and a connecting terminal 400, wherein the core 300 is arranged in the shell 100, the end cover 200 is plugged at an opening of the shell 100 and is provided with the connecting terminal 400, and an insulator 500 is further arranged at the joint of the connecting terminal 400 and the end cover 200.

The explosion-proof structure arranged in the capacitor specifically comprises: stick core 1, panel 2 and explosion proof piece 3, end cover 200 inboard has down arched edge 4 and edge 4 surrounds and is formed with the accommodation chamber that is used for placing panel 2, and edge 4 bottom has towards accommodation chamber central direction horizontally extended flange 41 in order to carry on panel 2, and panel 2 horizontal arrangement can slide along vertical in the accommodation chamber, and reserves the space that is used for panel 2 vertical activity between panel 2 and the end cover 200.

Further, the dynamic seal between the edge of panel 2 and edge 4 allows the cavity to form a relatively independent space under the barrier of panel 2, and the gas generated by the breakdown of core 300 does not escape through panel 2.

Core 1 is insulated and vertically fixed inside end cap 200, and panel 2 has a through hole 5 through which core 1 passes.

The panel 2 is further inserted with the conductive metal block 6, the connecting terminal 400 is electrically connected with the conductive metal block 6 through the flexible lead 7, the explosion-proof piece 3 is mounted on the bottom side of the panel 2 and seals the bottom of the through hole 5, the explosion-proof piece 3 is made of conductive materials and is lapped with the conductive metal block 6, the core 300 is electrically connected with the explosion-proof piece 3, and therefore the connecting terminal 400 is electrically connected with the core 300.

When the core 300 is broken down to generate a large amount of gas accumulation, and the panel 2 is pushed away from the panel 2 by the rod core 1 to disconnect the conductive metal block 6 in the process of moving up the panel 2 due to gas expansion, so that the electricity of the core 300 and the connection terminal 400 is disconnected, the capacitor is blocked from continuously working, and the explosion caused by continuously generating more gas in the capacitor is avoided.

Further, a gap is reserved between the outer wall of the rod core 1 and the inner wall of the through hole 5, so that after the explosion-proof sheet 3 is jacked up by the rod core 1 due to upward movement of the panel 2 due to gas pressure, gas can flow into the accommodating cavity along the gap of the through hole 5, which is equivalent to discharging part of the gas pressure, and the risk of explosion of the capacitor is reduced.

In this embodiment, after the gas generated by breakdown of the core 300 is accumulated, the panel 2 can be pushed to move upwards to push away the explosion-proof sheet bar core 1, so that the core 300 is disconnected from the electrical connection terminal 400, the capacitor is blocked from continuing to work, and explosion caused by more gas generated in the capacitor is avoided.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a condenser explosion-proof structure, the condenser has shell (100), end cover (200), core (300) and connecting terminal (400), and core (300) are installed in shell (100), and end cover (200) shutoff is in shell (100) opening part and is installed connecting terminal (400), a serial communication port, includes: the explosion-proof device comprises a rod core (1), a panel (2) and an explosion-proof piece (3), wherein the rod core (1) is insulated and vertically fixed on the inner side of an end cover (200), an edge (4) arched downwards is arranged on the inner side of the end cover (200), a containing cavity for containing the panel (2) is formed around the edge (4), the panel (2) is horizontally arranged and slidingly assembled in the containing cavity, a through hole (5) for the rod core (1) to pass through and a conductive metal block (6) penetrating through the panel (2) are formed in the panel (2), a connecting terminal (400) is electrically connected with the conductive metal block (6), a core (300) is electrically connected with the explosion-proof piece (3), the explosion-proof piece (3) is mounted on the bottom side of the panel (2) and seals the bottom of the through hole (5), and the explosion-proof piece (3) is made of conductive material and is lapped with the conductive metal block (6), when the panel (2) moves upwards due to gas expansion, the explosion-proof piece (3) can be pushed by the rod core (1) to the conductive metal block (6) so that the core (300) is disconnected from the conductive terminal (400).

2. The capacitor explosion-proof structure according to claim 1, wherein a space for vertical movement of the panel (2) is reserved between the panel (2) and the end cap (200).

3. The capacitor explosion-proof structure according to claim 2, wherein the panel (2) is dynamically sealed between the edge and the rim (4).

4. A capacitor explosion-proof structure according to claim 3, characterized in that a gap is left between the outer wall of the rod core (1) and the inner wall of the through hole (5) for gas to flow into the accommodating cavity after the explosion-proof sheet (3) is jacked up.

5. The explosion-proof structure of capacitor according to claim 1, wherein the bottom end of the edge (4) is provided with a flange (41) extending horizontally towards the center of the accommodating cavity for carrying the panel (2).

6. The capacitor explosion-proof structure according to claim 1, wherein the connection terminal (400) is connected to the conductive metal block (6) through a flexible wire (7).

7. The capacitor explosion-proof structure according to claim 1, wherein an insulator (500) is further provided at the junction of the connection terminal (400) and the end cap (200).