Explosion-proof film capacitor

Abstract

The invention discloses an explosion-proof film capacitor, and relates to the technical field of capacitors. A capacitor body is arranged in the shell, the top of the shell is connected with a top cover, and a locking mechanism is connected between the top cover and the shell; side boxes are connected to the two sides of the shell, a ventilation opening is formed in the shell, and a rotating plate is arranged on the ventilation opening. Air flows out through an air blower, an air guide cavity is located between an air inlet pipe and a shell, an air inlet is formed in the bottom of the shell, air enters the shell through the air inlet and is matched with the air guide cavity, so that air flowing and cooling are achieved, a rotating motor drives a rotating disc, the rotating disc drives a first connecting rod to rotate, and the first connecting rod drives a bearing and a second connecting rod to move; the second connecting rod drives the first sliding block to slide in the through groove, the first sliding block drives the rotating frame to move when sliding, the rotating frame drives the rotating plate to turn over, and when the rotating plate turns over, opening and closing of the ventilation opening are controlled, the ventilation quantity is flexibly adjusted, and different use requirements are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of capacitors, in particular to an explosion-proof film capacitor. BACKGROUND

[0002] The explosion-proof film capacitor is mainly used in industrial environments that may have explosion hazards to provide safe and reliable power storage and signal processing functions. In power systems, the explosion-proof film capacitor can be used for stable operation of the power system. Special explosion-proof structures such as sealed housings and internal designs are used to prevent explosions caused by capacitor failures. It can work stably in high temperature environment and is suitable for high temperature environment application. It ensures industrial safety while providing necessary power storage and signal processing functions.

[0003] Chinese patent CN105097285B discloses a new type of explosion-proof film capacitor, which adopts a "first series and then parallel" connection mode to reduce the impact of winding core breakdown on the capacitor. The bypass component has small energy storage and is not easy to damage adjacent winding cores or the outer shell insulation when the winding core breaks down. The use of heat-conducting epoxy resin, heat-conducting oil and arc-shaped concave surface improves the heat exchange effect, which is beneficial to prevent the expansion of faults or shell explosion. The overvoltage protection device protects the electrical components from overvoltage and high pressure impact. The capacitor has compact structure, saves installation space, reduces operation failure rate, has low overall loss and low cost, which is beneficial to reduce manufacturing quality defects. The electrical components have large capacity, fewer winding cores and high production efficiency, and have good explosion-proof performance.

[0004] The above scheme has the following disadvantages: although the above scheme can withstand impact, only heat-conducting epoxy resin, heat-conducting oil and arc-shaped concave surface are used for heat exchange, which may result in poor heat dissipation effect, insufficient release of internal pressure, and rapid increase of pressure when a fault occurs in the capacitor, thereby increasing the risk of explosion. SUMMARY

[0005] The present application aims to provide an explosion-proof film capacitor to solve the technical problem of poor heat dissipation effect, insufficient release of internal pressure, and rapid increase of pressure when a fault occurs in the capacitor, thereby increasing the risk of explosion.

[0006] The technical problem can be solved by the following technical scheme:

[0007] An explosion-proof film capacitor comprises a housing.

[0008] The housing is internally provided with a capacitor body, the top of the housing is connected with a top cover, and the top cover and the housing are connected with a locking mechanism.

[0009] Both sides of the shell are connected with side boxes, a ventilation opening is arranged on the shell, a rotating plate is arranged on the ventilation opening, an adjusting mechanism is arranged in the side box, the adjusting mechanism is arranged in cooperation with the rotating plate, a mounting plate one and a mounting plate two are fixedly connected in the side box, a through slot is arranged in the mounting plate one and the mounting plate two, a sliding block one is slidably connected in the through slot, a rotating motor is fixedly connected in the side box, a rotating disc is connected to the mounting plate two, the rotating disc is arranged at the rotating end of the rotating motor, a rotating shaft is fixedly connected to the end of the rotating disc away from the rotating motor, a connecting rod one is fixedly connected to the rotating shaft, the end of the connecting rod one away from the rotating shaft is connected to a bearing, a connecting rod two is connected between the bearing and the sliding block one, the connecting rod two and the sliding block one are connected through a hinge, a connecting rod three is connected between the two sliding block ones, a rotating frame is connected to the sliding block one, and the rotating plate is connected to the end of the rotating frame away from the sliding block one.

[0010] As a further scheme of the present application: the shell is an oil seal shell.

[0011] As a further scheme of the present application: the locking mechanism comprises a plug block and a sliding block two, a fixed block is fixedly connected to the shell, two connecting blocks are fixedly connected to the fixed block, a U-shaped frame is arranged between the two connecting blocks, a sliding block two is arranged between the connecting block and the U-shaped frame, a sliding groove is arranged on the connecting block, the sliding block two is slidably connected in the sliding groove, a sliding block three is slidably connected to the top cover, a sliding groove is arranged on the top cover, the sliding block three is slidably connected in the sliding groove, the sliding block three is fixedly connected with the plug block, a plug hole is arranged in the plug block, a through hole is arranged in each of the two connecting blocks, a plug rod is inserted into the through hole, and the plug rod is arranged in cooperation with the plug hole.

[0012] As a further scheme of the present application: the sliding block two is in T-shaped structure.

[0013] As a further scheme of the present application: a spring is connected between the U-shaped frame and the fixed block.

[0014] As a further scheme of the present application: the sliding block three is in I-shaped structure.

[0015] As a further scheme of the present application: a temperature sensor is connected inside the shell, a cooling mechanism is arranged between the shell and the capacitor body, the temperature sensor is electrically connected with the cooling mechanism, the cooling mechanism comprises a blower and an air guide cavity, a fixed plate one is fixedly connected to the bottom of the shell, the blower is fixedly connected to the fixed plate one, an air inlet pipe is fixedly connected to the air outlet end of the blower, an air inlet is arranged at the bottom of the shell, and the air inlet is arranged in cooperation with the air guide cavity.

[0016] As a further scheme of the present application: the air guide cavity is arranged at the end of the air inlet pipe away from the air blower, and the air guide cavity is arranged between the air inlet pipe and the shell.

[0017] As a further scheme of the present application: the shell is internally connected with a pressure sensor, and the pressure sensor is electrically connected with the rotating motor.

[0018] As a further scheme of the present application: the rotating plate is connected with an inclined edge plate at each side, the rotating frame is connected with a fixed plate two between the rotating plate, and the fixed plate two is connected with a locking bolt between the rotating plate.

[0019] The present application has the following beneficial effects:

[0020] 1. The air blower is used to blow air, the air guide cavity is arranged between the air inlet pipe and the shell, the air inlet is arranged at the bottom of the shell, air is introduced into the shell through the air inlet, and the air guide cavity is used to realize air flow and cooling. The rotating motor drives the rotating disc, the rotating disc drives the connecting rod one to rotate, the connecting rod one drives the bearing and the connecting rod two to move, the connecting rod two drives the sliding block one to slide in the through slot, the sliding block one drives the rotating frame to move when sliding, the rotating frame drives the rotating plate to overturn, the rotating plate controls the opening and closing of the air vent when overturning, the air volume is flexibly adjusted to adapt to different use requirements.

[0021] 2. The connecting block on the fixed block is connected with the U-shaped frame, the sliding block two slides in the sliding groove of the connecting block, the sliding block three is pushed to slide, the sliding block three drives the plug-in block to move, the plug-in block drives the sliding block to move between the connecting blocks, the U-shaped frame is pushed to move to the side close to the fixed block one, when the plug-in hole on the plug-in block moves below the plug-in rod, the plug-in rod is inserted into the plug-in hole downward, the relative fixation between the top cover and the shell is ensured, a stable connection is formed between the top cover and the shell through the cooperation of the plug-in block and the plug-in rod, the rigidity of the whole structure is enhanced, the assembly and disassembly process is simple and fast, and the maintenance and repair are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below with reference to the drawings.

[0023] Figure 1 is a schematic view of the whole structure of the present application;

[0024] Figure 2 is Figure 1 is an enlarged structure schematic view of A in the figure;

[0025] Figure 3 is a structure schematic view of the adjusting mechanism in the present application;

[0026] Figure 4 is Figure 3 is a side view structure schematic view;

[0027] Figure 5 is a schematic view of the internal structure of the shell from the top.

[0028] In the figure: 1, shell; 2, top cover; 3, air inlet pipe; 4, fixed plate one; 5, blower; 6, air guide cavity; 7, side box; 8, mounting plate one; 9, rotating plate; 10, bevel plate; 11, mounting plate two; 12, rotating disc; 13, through slot; 14, bearing; 15, sliding block one; 16, connecting rod one; 17, connecting rod two; 18, rotating frame; 19, fixed plate two; 20, connecting rod three; 21, air inlet; 22, capacitor body; 23, fixed block; 24, connecting block; 25, spring; 26, plug-in block; 27, U-shaped frame; 28, sliding block two; 29, plug-in rod; 30, sliding block three. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] As Figures 1-5 shown, an explosion-proof film capacitor includes a shell 1, the shell 1 is an oil seal shell, the oil seal shell design improves the sealing performance and explosion-proof performance of the shell 1, and is suitable for flammable and explosive environments. A capacitor body 22 is arranged in the shell 1. A top cover 2 is connected to the top of the shell 1. A locking mechanism is connected between the top cover 2 and the shell 1. The locking mechanism includes a plug-in block 26 and a sliding block two 28. A fixed block 23 is fixedly connected to the shell 1. Two connecting blocks 24 are fixedly connected to the fixed block 23. A U-shaped frame 27 is arranged between the two connecting blocks 24. The connecting block 24 and the U-shaped frame 27 are provided with the sliding block two 28. A sliding groove is arranged on the connecting block 24. The sliding block two 28 is slidably connected in the sliding groove. The sliding block two 28 is in T-shaped structure. The U-shaped frame 27 and the fixed block 23 are connected with a spring 25. A sliding block three 30 is slidably connected to the top cover 2. A sliding groove is arranged on the top cover 2. The sliding block three 30 is in I-shaped structure. The sliding block three 30 is slidably connected in the sliding groove. The sliding block three 30 is fixedly connected with the plug-in block 26. A plug-in hole is arranged in the plug-in block 26. A through hole is arranged in each of the two connecting blocks 24. A plug-in rod 29 is inserted in the through hole. The plug-in rod 29 is arranged in cooperation with the plug-in hole. Through the locking mechanism between the top cover 2 and the shell 1, the stable connection of the top cover 2 and the shell 1 is ensured, and loosening caused by vibration or temperature change is prevented.

[0031] The shell 1 is internally connected with a temperature sensor, the shell 1 and the capacitor body 22 are provided with a cooling mechanism, the temperature sensor is electrically connected with the cooling mechanism, the cooling mechanism comprises a blower 5 and a air guide cavity 6, the shell 1 bottom is fixedly connected with a fixed plate one 4, the blower 5 is fixedly connected on the fixed plate one 4, the air outlet end of the blower 5 is fixedly connected with an air inlet pipe 3, the air guide cavity 6 is arranged at the end of the air inlet pipe 3 away from the blower 5, the air guide cavity 6 is arranged between the air inlet pipe 3 and the shell 1, the shell 1 bottom is provided with an air inlet 21, and the air inlet 21 is arranged in cooperation with the air guide cavity 6; the cooling mechanism effectively cools the capacitor body 22 through air flow, improves the heat dissipation efficiency of the capacitor, and prolongs the service life of the capacitor;

[0032] The shell 1 is internally connected with a temperature sensor, the shell 1 and the capacitor body 22 are provided with a cooling mechanism, the temperature sensor is electrically connected with the cooling mechanism, the cooling mechanism comprises a blower 5 and a air guide cavity 6, the shell 1 bottom is fixedly connected with a fixed plate one 4, the blower 5 is fixedly connected on the fixed plate one 4, the air outlet end of the blower 5 is fixedly connected with an air inlet pipe 3, the air guide cavity 6 is arranged at the end of the air inlet pipe 3 away from the blower 5, the air guide cavity 6 is arranged between the air inlet pipe 3 and the shell 1, the shell 1 bottom is provided with an air inlet 21, and the air inlet 21 is arranged in cooperation with the air guide cavity 6; the cooling mechanism effectively cools the capacitor body 22 through air flow, improves the heat dissipation efficiency of the capacitor, and prolongs the service life of the capacitor;

[0033] The working principle of the present application: the capacitor body 22 is installed inside the shell 1, the shell 1 provides protection and sealing of the capacitor, the top cover 2 is connected with the shell 1, and is fixed through the locking mechanism (the plug-in block 26 and the sliding block two 28), the connecting block 24 on the fixed block 23 is connected with the U-shaped frame 27, the sliding block two 28 slides in the sliding groove of the connecting block 24, the sliding block three 30 is pushed to slide, the sliding block three 30 drives the plug-in block 26 to move, the plug-in block 26 drives the sliding block to move between the connecting block 24, and the U-shaped frame 27 is pushed to move to the side close to the fixed block 23, when the plug-in hole on the plug-in block 26 moves below the plug-in rod 29, the plug-in rod 29 is inserted into the plug-in hole downwards, and the relative fixation between the top cover 2 and the shell 1 is ensured; the cooling mechanism is arranged between the shell 1 and the capacitor body 22, air is blown out through the air blower 5, the air guide cavity 6 is located between the air inlet pipe 3 and the shell 1, the air inlet 21 is formed in the bottom of the shell 1, air is inhaled into the shell 1 through the air inlet 21, and the air guide cavity 6 is cooperated to realize air flow and cooling.

[0034] The side edge box 7 is connected on the both sides of the shell 1, the ventilation opening is formed in the shell 1, the rotating plate 9 is arranged on the ventilation opening, the ventilation opening can be opened or closed through the movement of the rotating plate 9, the rotating motor drives the rotating disc 12, the rotating disc 12 drives the connecting rod one 16 to rotate, the connecting rod one 16 drives the bearing 14 and the connecting rod two 17 to move, the connecting rod two 17 drives the sliding block one 15 to slide in the through slot 13, the sliding block one 15 drives the rotating frame 18 to move when sliding, the rotating frame 18 drives the rotating plate 9 to overturn, and the rotating plate 9 is turned over to control the opening and closing of the ventilation opening.

[0035] The above has carried out the detailed description to one embodiment of the present application, but the content is only the preferred embodiment of the present application, and cannot be considered for limiting the implementation scope of the present application. Any equivalent change and improvement made according to the application scope of the present application should still belong to the patent coverage scope of the present application.

Claims

1. An explosion-proof film capacitor, comprising a housing (1); characterized in that: A capacitor body (22) is provided inside the housing (1), a top cover (2) is connected to the top of the housing (1), and a locking mechanism is connected between the top cover (2) and the housing (1); Both sides of the shell (1) are connected to side boxes (7), a vent is provided on the shell (1), a rotating plate (9) is provided on the vent, an adjustment mechanism is provided in the side box (7), the adjustment mechanism is arranged in conjunction with the rotating plate (9), a mounting plate 1 (8) and a mounting plate 2 (11) are fixedly connected in the side box (7), a through slot (13) is provided on the mounting plate 1 (8) and the mounting plate 2 (11), a slider 1 (15) is slidably connected in the through slot (13), a rotating motor is fixedly connected in the side box (7), a rotating disk (12) is connected to the mounting plate 2 (11), and the rotating disk (12) is provided. The rotating disc (12) is arranged at the rotating end of the rotating motor, and the end of the rotating disc (12) away from the rotating motor is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to a connecting rod (16), and the end of the connecting rod (16) away from the rotating shaft is connected to the bearing (14), and a connecting rod (17) is connected between the bearing (14) and the slider (15), and the connecting rod (17) and the slider (15) are connected by a hinge, and a connecting rod (20) is connected between the two sliders (15), and a rotating frame (18) is connected to the slider (15), and the rotating plate (9) is connected to the end of the rotating frame (18) away from the slider (15).

2. The explosion-proof film capacitor according to claim 1, characterized in that: The housing (1) is an oil seal housing.

3. The explosion-proof film capacitor according to claim 1, characterized in that: The locking mechanism comprises a plug-in block (26) and a second slider (28). The housing (1) is fixedly connected with a fixed block (23). Two connecting blocks (24) are fixedly connected to the fixed block (23). A U-shaped frame (27) is provided between the two connecting blocks (24). A second slider (28) is provided between the connecting block (24) and the U-shaped frame (27). A sliding groove is provided on the connecting block (24). The second slider (28) is slidably connected in the sliding groove. The top cover (2) is slidably connected with a third slider (30). The top cover (2) is provided with a sliding groove. The third slider (30) is slidably connected in the sliding groove. The third slider (30) is fixedly connected with the plug-in block (26). A plug-in hole is provided on the plug-in block (26). Both of the two connecting blocks (24) are provided with through holes. A plug-in rod (29) is plugged into the through hole. The plug-in rod (29) is matched with the plug-in hole.

4. The explosion-proof film capacitor according to claim 3, characterized in that: The second slider (28) is a T-shaped structure.

5. The explosion-proof film capacitor according to claim 3, characterized in that: A spring (25) is connected between the U-shaped frame (27) and the fixed block (23).

6. The explosion-proof film capacitor according to claim 3, characterized in that: The slider three (30) is an I-shaped structure.

7. The explosion-proof film capacitor according to claim 1, characterized in that: A temperature sensor is connected to the interior of the housing (1); a cooling mechanism is provided between the housing (1) and the capacitor body (22); the temperature sensor and the cooling mechanism are electrically connected; the cooling mechanism comprises a blower (5) and an air guide cavity (6); a fixing plate (4) is fixedly connected to the bottom of the housing (1); the blower (5) is fixedly connected to the fixing plate (4); an air outlet end of the blower (5) is fixedly connected to an air inlet pipe (3); an air inlet (21) is provided at the bottom of the housing (1); the air inlet (21) is arranged in cooperation with the air guide cavity (6).

8. The explosion-proof film capacitor according to claim 7, characterized in that: The air guide cavity (6) is arranged at one end of the air inlet pipe (3) away from the blower (5), and the air guide cavity (6) is arranged between the air inlet pipe (3) and the housing (1).

9. The explosion-proof film capacitor according to claim 1, characterized in that: A pressure sensor is connected inside the housing (1), and the pressure sensor is electrically connected to the rotating motor.

10. The explosion-proof film capacitor according to claim 1, characterized in that: The sides of the rotating plate (9) are connected with bevel plates (10), a second fixed plate (19) is connected between the rotating frame (18) and the rotating plate (9), and a locking bolt is connected between the second fixed plate (19) and the rotating plate (9).

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