Capacitor protection device

Abstract

The utility model discloses a capacitor protection device, and belongs to the technical field of capacitor protection. The capacitor protection device further comprises water bag skins which are fixedly arranged on the positioning blocks. Each water bag skin is made of a flexible material; the upper end of each positioning block is fixedly connected with a fixing rod; the upper end of each fixing rod penetrates through the upper cover plate and then abuts against the lower end face of the wiring base plate. The inner side of the fixing rod is communicated with a space formed by the positioning block and the water bag skin; the upper end of each positioning block is fixedly connected with a spring; the spring is in sliding connection with the inner side wall of the fixed rod; the upper end of each spring is fixedly connected with a push rod; the water bag skin is made of a flexible material, deformation generated by thermal expansion of the capacitor body is utilized to extrude the water bag skin to the positioning block, then hydraulic oil on the inner sides of the positioning block and the water bag skin jacks up the push rod, the push rod jacks up the wiring base plate, then the binding post and the electrode end are separated, and deformation of the capacitor body is prevented. And the capacitor body is timely protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of capacitor protection, and more specifically relates to a capacitor protection device. Background Art

[0002] Two conductors close to each other with a non-conductive insulating medium in between constitute a capacitor. When a voltage is applied between the two plates of the capacitor, the capacitor will store charge.

[0003] For example, a capacitor protection device with patent application number CN202221749130.1 includes a capacitor with a metal shell, a conductive column, a protective shell, a fixed plate, a limit protection structure and an overheating cut-off structure; two conductive columns are installed and connected at the top of the capacitor with a metal shell, and the two conductive columns are electrically connected to the two wiring terminals of the capacitor with a metal shell, respectively, and a fixed plate is fixedly connected to the side of the protective shell, and a limit protection structure is installed on the protective shell, and an overheating cut-off structure is installed on the protective shell. The present application can protect the capacitor with a metal shell through the protective shell, reduce the erosion and damage of the capacitor with a metal shell by external dust and foreign matter, and at the same time, the present application has a limit protection function, and the limit protection function can further fix the capacitor with a metal shell, so that the installation and fixation of the capacitor with a metal shell is more stable and looseness is avoided.

[0004] Although the above capacitor protection device reduces the corrosion damage of external dust and foreign matter to the capacitor with a metal casing, it does not react quickly enough to the thermal expansion of the capacitor. If a strong external current or voltage breaks through the capacitor, causing the capacitor to thermally expand or even explode, it is very dangerous. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a capacitor protection device to timely protect the capacitor body.

[0006] The utility model discloses a capacitor protection device, comprising a shell; the upper end of the shell is clamped with an upper cover plate; two pairs of air inlets are arranged on the surface of the upper cover plate; the lower end of the shell is clamped with a base; four groups of heat dissipation ports 1 are fixedly arranged on the lower end of the base; four groups of slide slot holes are arranged on the outer end surface of the shell; heat dissipation fins are embedded in the inner sides of the slide slot holes; a capacitor body is fixedly arranged on the inner upper end surface of the base; four groups of heat dissipation ports 2 are arranged on the inner upper end surface of the base; each group of heat dissipation ports 2 is located on the outer side of the capacitor body; four positioning blocks are fixedly arranged on the outer side of the capacitor body at equal intervals; the positioning blocks are clamped with a plurality of heat dissipation fins on the corresponding sides; a pair of electrode ends are fixedly arranged on the upper end of the capacitor body; the upper end of the electrode end passes through the upper The cover plate is slidably connected to the terminal post at the back; a water bag skin is fixedly arranged between the lower side of the two terminal posts and the upper end surface of the upper cover plate; it also includes a water bag skin fixedly arranged on each positioning block; each water bag skin is made of flexible material; the connection between each water bag skin and the positioning block connected to it is sealed; the upper end of each positioning block is fixedly connected to a fixing rod; the upper end of each fixing rod passes through the upper cover plate and abuts against the lower end surface of the wiring chassis; the inner side of the fixing rod is connected to the space formed by the positioning block and the water bag skin; the upper end of each positioning block is fixedly connected to a spring; the spring is slidably connected to the inner side wall of the fixing rod; the upper end of each spring is fixedly connected to a push rod; the upper end of each push rod is fixedly connected to the wiring chassis.

[0007] Preferably: a motor is fixedly arranged on the inner lower end surface of the base; the output end of the motor is fixedly connected to the fan blade; the length of the fan blade does not exceed the second edge of the heat dissipation port farthest, and is not shorter than the edge of the second heat dissipation port closest to the motor.

[0008] Preferably: the four side walls of the housing are threadedly connected to the screws; the inner end face of each screw abuts against the outer side face of the positioning block; a bearing is fixedly arranged at the outer side face of each positioning block corresponding to the screw; and each screw is fixedly connected to the inner ring of the bearing.

[0009] Preferably, the heat dissipation fins are copper alloy thin plates.

[0010] Preferably, the side wall of the shell is a transparent organic glass plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) By setting the water bag skin to be a flexible material, the deformation caused by the thermal expansion of the capacitor body is used to squeeze the water bag skin toward the positioning block. Then, the hydraulic oil inside the positioning block and the water bag skin lifts the push rod, and the push rod lifts the wiring chassis, thereby separating the terminal and the electrode end, preventing the deformation of the capacitor body and protecting the capacitor body in time;

[0013] (2) By providing heat dissipation fins, motors, and fan blades, the heat dissipation effect is increased to avoid thermal expansion of the capacitor body due to overheating of the inner side of the shell, thereby protecting the capacitor body;

[0014] (3) By arranging a screw, a bearing, and a positioning block, the bearing is fixedly connected to the positioning block, the inner ring of the bearing is fixedly connected to the screw, and the screw is threadedly connected to the outer shell. When the capacitor body undergoes thermal expansion, the screw and the positioning block cannot be pushed, thereby stably protecting the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the utility model at AA;

[0018] Figure 4 It is an enlarged schematic diagram of point I of the present utility model.

[0019] Explanation of the numbers in the figure: 10. Shell; 11. Base; 12. Upper cover; 13. Air inlet; 14. Wiring chassis; 16. Slide slot hole; 17. Heat dissipation port 1; 18. Heat dissipation fins; 19. Heat dissipation port 2; 20. Capacitor body; 21. Bearing; 22. Screw; 23. Push rod; 24. Positioning block; 25. Water bag skin; 26. Spring; 27. Fixing rod; 28. Terminal; 29. ​​Motor; 30. Fan blade; 31. Electrode end. DETAILED DESCRIPTION

[0020] Specific embodiment 1: Please refer to Figure 1-4A capacitor protection device comprises a shell 10; the upper end of the shell 10 is clamped with an upper cover plate 12; two pairs of air inlets 13 are arranged on the surface of the upper cover plate 12; the lower end of the shell 10 is clamped with a base 11; four groups of heat dissipation ports 17 are fixedly arranged at the lower end of the base 11; four groups of slide slot holes 16 are arranged on the outer end surface of the shell 10; heat dissipation fins 18 are embedded inside the slide slot holes 16; a capacitor body 20 is fixedly arranged on the inner upper end surface of the base 11; four groups of heat dissipation ports 2 19 are arranged on the inner upper end surface of the base 11; each group of the heat dissipation ports 2 19 is located on the outer side of the capacitor body 20; the capacitor body 20 Four positioning blocks 24 are fixedly arranged at equal intervals on the outside; the positioning blocks 24 are snap-fitted with a plurality of heat dissipation fins 18 on the corresponding side; a pair of electrode terminals 31 are fixedly arranged on the upper end of the capacitor body 20; the upper end of the electrode terminal 31 passes through the upper cover plate 12 and then slides to connect to the terminal 28; a water bag skin 25 is fixedly arranged between the lower side of the two terminal 28 and the upper end surface of the upper cover plate 12; it also includes a water bag skin 25 fixedly arranged on each positioning block 24; each of the water bag skins 25 is made of flexible material; the connection between each of the water bag skins 25 and the positioning block 24 connected thereto is sealed; each of the positioning blocks The upper end of each fixing rod 27 is fixedly connected to the fixing rod 27; the upper end of each fixing rod 27 passes through the upper cover plate 12 and abuts against the lower end surface of the wiring chassis 14; the inner side of the fixing rod 27 is connected to the space formed by the positioning block 24 and the water bag skin 25; the upper end of each positioning block 24 is fixedly connected to the spring 26; the spring 26 is slidably connected to the inner wall of the fixing rod 27; the upper end of each spring 26 is fixedly connected to the push rod 23; the upper end of each push rod 23 is fixedly connected to the wiring chassis 14; by setting the water bag skin 25 to be a flexible material, the deformation caused by the thermal expansion of the capacitor body 20 is utilized to squeeze the water toward the positioning block 24 The bladder skin 25, and then the positioning block 24 and the hydraulic oil inside the water bladder skin 25 lift the push rod 23, and the push rod 23 lifts the wiring chassis 14, so that the terminal 28 and the electrode end 31 are separated, and the deformation of the capacitor body 20 is prevented and processed, and the capacitor body 20 is protected in time; by arranging the screw 22, the bearing 21, and the positioning block 24, the bearing 21 is fixedly connected to the positioning block 24, the inner ring of the bearing 21 is fixedly connected to the screw 22, and the screw 22 is threadedly connected to the shell 10. When the capacitor body 20 undergoes thermal expansion, the screw 22 and the positioning block 24 cannot be pushed, and the capacitor body 20 is stably protected.

[0021] See also Figure 3 A motor 29 is fixedly arranged on the lower end surface of the inner side of the base 11; the output end of the motor 29 is fixedly connected to the fan blade 30; the length of the fan blade 30 does not exceed the edge of the farthest heat dissipation port 19, and is not shorter than the edge of the heat dissipation port 19 closest to the motor 29; by arranging the heat dissipation fins 18, the motor 29, and the fan blade 30, the heat dissipation effect is increased, the thermal expansion of the capacitor body 20 caused by overheating of the inner side of the shell 10 is avoided, and the capacitor body 20 is protected.

[0022] See also Figure 3 The four side walls of the housing 10 are threadedly connected to the screws 22; the inner end surface of each screw 22 abuts against the outer side surface of the positioning block 24; a bearing 21 is fixedly arranged at the outer side surface of each positioning block 24 corresponding to the screw 22; and each screw 22 is fixedly connected to the inner ring of the bearing 21.

[0023] See also Figure 3 The heat sink fins 18 are copper alloy thin plates.

[0024] See also Figure 1-4 The side wall of the housing 10 is a transparent organic glass plate.

[0025] During operation, the capacitor body 20 is placed on the upper end surface of the base 11, and then the hydraulic oil is filled between the combination of the positioning block 24 and the water bag skin 25, and the spring 26, the push rod 23, and the fixing rod 27 are installed one by one, and then the screw 22 is rotated to press the water bag skin 25 around the capacitor body 20 so that it is just at the lowest point of the push rod 23 in the motion trajectory; the motor 29 is started, and the output end of the motor 29 drives the fan blade 30 to rotate, and then the two terminals 28 are connected to the corresponding circuit;

[0026] During daily operation, the fan blades 30 rotate to draw the hot air inside the shell 10 out from the heat dissipation port 2 19, and finally discharge it from the heat dissipation port 1 17. The inside of the shell 10 is then replenished with new air with a lower temperature from the air inlet 13 to maintain the air pressure balance inside the shell 10. When the voltage and current are too large, the temperature of the capacitor body 20 is too high, and the capacitor medium undergoes thermal expansion. The capacitor body 20 squeezes the water bag skin 25, and the hydraulic oil inside the water bag skin 25 cannot push the positioning block 24 and can only flow into the fixing rod 27. After the hydraulic oil enters the fixing rod 27, it lifts the push rod 23, and then the push rod 23 lifts the wiring chassis 14, so that the terminal 28 and the electrode end 31 are separated, preventing the capacitor body 20 from continuing to receive current and voltage exceeding the standard and expanding due to heat, thereby damaging the capacitor and the circuit.

[0027] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0028] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the product or system including the elements.

[0029] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A capacitor protection device, comprising a housing (10); the upper end of the housing (10) is clamped with an upper cover plate (12); two pairs of air inlets (13) are arranged on the surface of the upper cover plate (12); the lower end of the housing (10) is clamped with a base (11); four groups of heat dissipation ports (17) are fixedly arranged at the lower end of the base (11); four groups of slide slot holes (16) are arranged on the outer end surface of the housing (10); heat dissipation fins (18) are embedded inside the slide slot holes (16); a capacitor body (20) is fixedly arranged on the inner upper end surface of the base (11); four groups of heat dissipation ports (17) are fixedly arranged on the inner upper end surface of the base (11); Heat outlet two (19); each group of the heat outlet two (19) is located outside the capacitor body (20); four positioning blocks (24) are fixedly arranged at equal intervals outside the capacitor body (20); the positioning blocks (24) are snap-fitted with a plurality of heat dissipation fins (18) on the corresponding side; a pair of electrode ends (31) are fixedly arranged at the upper end of the capacitor body (20); the upper ends of the electrode ends (31) pass through the upper cover plate (12) and then slidably connect to the terminal posts (28); a water bag skin (25) is fixedly arranged between the lower sides of the two terminal posts (28) and the upper end surface of the upper cover plate (12); the characteristics are as follows: It also includes a water bag skin (25) fixedly arranged on each positioning block (24); each of the water bag skins (25) is made of a flexible material; the connection between each of the water bag skins (25) and the positioning block (24) connected thereto is sealed; the upper end of each of the positioning blocks (24) is fixedly connected to a fixing rod (27); the upper end of each of the fixing rods (27) passes through the upper cover plate (12) and abuts against the lower end surface of the wiring chassis (14); the inner side of the fixing rod (27) is connected to the space formed by the positioning block (24) and the water bag skin (25); the upper end of each of the positioning blocks (24) is fixedly connected to a spring (26); the spring (26) is slidably connected to the inner side wall of the fixing rod (27); the upper end of each of the springs (26) is fixedly connected to a push rod (23); and the upper end of each of the push rods (23) is fixedly connected to the wiring chassis (14).

2. A capacitor protection device according to claim 1, characterized in that: A motor (29) is fixedly arranged on the inner lower end surface of the base (11); the output end of the motor (29) is fixedly connected to the fan blade (30); the length of the fan blade (30) does not exceed the edge of the farthest heat dissipation port 2 (19), and is not shorter than the edge of the heat dissipation port 2 (19) closest to the motor (29).

3. A capacitor protection device according to claim 1, characterized in that: The four side walls of the housing (10) are threadedly connected to the screw rods (22); the inner end surface of each screw rod (22) abuts against the outer side surface of the positioning block (24); a bearing (21) is fixedly arranged at the outer side surface of each positioning block (24) corresponding to the screw rod (22); and each screw rod (22) is fixedly connected to the inner ring of the bearing (21).

4. A capacitor protection device according to claim 1, characterized in that: The heat dissipation fins (18) are copper alloy thin plates.

5. A capacitor protection device according to claim 1, characterized in that: The side wall of the housing (10) is a transparent organic glass plate.

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