A capacitor with four-piece explosion-proof discs that automatically adapts to installation

Abstract

The present invention relates to a capacitor with four explosion-proof discs that can be automatically and adaptively installed, comprising: a left explosion-proof disc installed on the inner wall of one side of the capacitor housing, a right explosion-proof disc installed on the inner wall of the other side of the capacitor housing, and a connection structure that can be detachably connected between the left explosion-proof disc and the right explosion-proof disc; the connection structure comprises: a first connection piece that is rotatably connected to the left explosion-proof disc and the right explosion-proof disc respectively, and a second connection piece that is rotatably connected to the left explosion-proof disc and the right explosion-proof disc respectively; the cross-sections of the first connection piece and the second connection piece are both M-shaped, and the M-shaped opening directions of the cross-sections of the first connection piece and the second connection piece are opposite. The present invention realizes circuit-breaking protection by arranging a left explosion-proof disc and a right explosion-proof disc, provides installation margin by arranging a connection piece, realizes adaptive installation by arranging two rotatably installed connection pieces, and improves the stability and flexibility of such adaptive installation by arranging an M-shaped cross-section of the connection piece and a centrally symmetrical structural position.

Description

Technical Field

[0001] The invention relates to the technical field of capacitors, in particular to a capacitor with quadruple explosion-proof discs that can be automatically installed in an adaptive manner. Background Art

[0002] When a capacitor is used for too long or fails, the temperature inside the shell will rise, causing the shell to expand. For safety reasons, an explosion-proof circuit breaker structure should be set up inside the capacitor to prevent it from exploding due to high temperature. However, the quadruple explosion-proof disc used in the existing circuit breaker structure is difficult to adapt to the installation of the capacitor. The scrap rate of this quadruple explosion-proof disc is very high, and there are many restrictions on the use of models. Therefore, it is necessary to design a quadruple explosion-proof disc that can be adaptively installed inside the capacitor shell. Summary of the invention

[0003] The present invention aims at the deficiencies in the prior art and provides a capacitor with four-unit explosion-proof discs that can automatically adapt to installation.

[0004] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] A capacitor with four explosion-proof discs that can be automatically installed and adapted to each other comprises: a left explosion-proof disc installed on the inner wall of one side of a capacitor housing, a right explosion-proof disc installed on the inner wall of the other side of the capacitor housing, and a connecting structure that is detachably connected between the left explosion-proof disc and the right explosion-proof disc; the connecting structure comprises: a first connecting piece that is rotatably connected to the left explosion-proof disc and the right explosion-proof disc respectively, and a second connecting piece that is rotatably connected to the left explosion-proof disc and the right explosion-proof disc respectively; the cross-sections of the first connecting piece and the second connecting piece are both M-shaped, and the M-shaped opening directions of the cross-sections of the first connecting piece and the second connecting piece are opposite.

[0006] As an improvement of the above technical solution, a first fixing plate and a second fixing plate are provided on the inner side of the left explosion-proof plate, and the first fixing plate and the second fixing plate are symmetrically arranged at the two ends of the left explosion-proof plate; a third fixing plate and a fourth fixing plate are provided on the inner side of the right explosion-proof plate, and the third fixing plate and the fourth fixing plate are symmetrically arranged at the two ends of the right explosion-proof plate; the first fixing plate, the second fixing plate and the third fixing plate, the fourth fixing plate are arranged in an alternating manner.

[0007] As an improvement of the above technical solution, a first end piece and a second end piece are provided on one side of the first connecting piece, and the first end piece and the second end piece are symmetrically arranged at both ends of the first connecting piece; a riveted first nut is provided between the first end piece and the first fixing piece, and a riveted second nut is provided between the second end piece and the third fixing piece.

[0008] As an improvement of the above technical solution, a third end piece and a fourth end piece are provided on one side of the second connecting piece, and the third end piece and the fourth end piece are symmetrically arranged at both ends of the second connecting piece; a riveted third nut is provided between the third end piece and the second fixed plate, and a riveted fourth nut is provided between the fourth end piece and the fourth fixed plate.

[0009] As an improvement of the above technical solution, the first connecting piece and the second connecting piece are centrally symmetrical.

[0010] As an improvement of the above technical solution, the capacitor of the present invention also includes: a mounting structure; the mounting structure includes: a first mounting plate arranged on the outside of the left explosion-proof plate, and a second mounting plate arranged on the outside of the right explosion-proof plate; a first mounting hole is provided on the first mounting plate, and a second mounting hole is provided on the second mounting plate.

[0011] As an improvement of the above technical solution, the first mounting piece is located above the left explosion-proof piece, and the second mounting piece is located below the right explosion-proof piece.

[0012] Compared with the prior art, the implementation effects of the present invention are as follows:

[0013] The present invention realizes circuit breaking protection by setting left and right explosion-proof discs, provides installation margin by setting connecting discs, realizes adaptive installation by setting two rotatably mounted connecting discs, and improves the stability and flexibility of such adaptive installation by setting the connecting discs with M-shaped cross-sections and centrally symmetrical structural positions. The device can protect capacitors from being burned, and is suitable for capacitor shells with quadrilateral cross-sections of various sizes under a certain series. Compared with the circuit breaking protection in the prior art, the device is not only low-cost and easy to disassemble and assemble, but also has good adaptability and has a wider range of applications in production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the quadruple explosion-proof disc of the present invention;

[0015] Figure 2 This is a front view of the quadruple explosion-proof disk of the present invention;

[0016] Figure 3 It is a left side view of the quadruple explosion-proof disk of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the dislocation state of the quadruple explosion-proof discs of the present invention;

[0018] Figure 5 for Figure 4 A bottom view of the quadruple explosion-proof disk;

[0019] Figure 6It is a schematic structural diagram of the quadruple explosion-proof disc of the present invention in an expanded state;

[0020] Figure 7 for Figure 6 Bottom view of the quadruple burst disk.

[0021] In the figure: 1—left explosion-proof disk, 11—first fixing plate, 12—second fixing plate, 13—first positioning hole, 2—right explosion-proof disk, 21—third fixing plate, 22—fourth fixing plate, 23—second positioning hole, 3—connecting structure, 31—first connecting plate, 311—first end plate, 312—second end plate, 32—second connecting plate, 321—third end plate, 322—fourth end plate, 4—mounting structure, 41—first mounting plate, 411—first rivet hole, 42—second mounting plate, 421—second rivet hole, 422—welding end, 5—fixing structure, 51—first nut, 52—second nut, 53—third nut, 54—fourth nut. DETAILED DESCRIPTION

[0022] The content of the present invention will be described below with reference to specific embodiments.

[0023] Figure 1 is a schematic diagram of the structure of the quadruple explosion-proof disc of the present invention, Figure 2 This is a front view of the quadruple explosion-proof disk of the present invention. Figure 3 FIG. 1 is a left side view of the quadruple explosion-proof disk of the present invention, as shown in FIG. Figure 1-3 As shown, the quadruple explosion-proof disc of the present invention is installed on the inner wall of the capacitor housing, including: a left explosion-proof disc 1 installed on the inner wall of one side of the capacitor housing, a right explosion-proof disc 2 installed on the inner wall of the other side of the capacitor housing, and a connection structure 3 detachably connected between the left explosion-proof disc 1 and the right explosion-proof disc 2. The connection structure 3 includes: a first connection piece 31 rotatably connected to the left explosion-proof disc 1 and the right explosion-proof disc 2, respectively, and a second connection piece 32 rotatably connected to the left explosion-proof disc 1 and the right explosion-proof disc 2, respectively. The cross-sections of the first connection piece 31 and the second connection piece 32 are both M-shaped, and the M-shaped opening directions of the cross-sections of the first connection piece 31 and the second connection piece 32 are opposite.

[0024] The existing low-voltage parallel capacitor with a square shell is installed with a quadruple explosion-proof plate connected by left and right explosion-proof plates. When the circuit is overloaded, the shell will expand inside, and the left explosion-proof plate 1 and the right explosion-proof plate 2 installed on the inner walls of the two sides of the capacitor will be pulled apart, resulting in a circuit break at the connection position between the left explosion-proof plate 1 and the right explosion-proof plate 2, which plays a role in circuit break protection. At the same time, in the present invention, the original connection structure 3 in the middle of the quadruple explosion-proof plate is replaced with a detachable connection. Without affecting its own function, such a detachable connection is more conducive to installation and adaptation. Moreover, the first connecting plate 31 and the second connecting plate 32 are connected in a rotating manner here, so that the quadruple explosion-proof plate can freely adjust its connection width, and without affecting its function, it can achieve adaptive installation of capacitors of various sizes. An M-shaped opening is set, and the size of the connecting plate is reduced while ensuring the connection, and the contact area with the left and right explosion-proof plates is reduced so that it can be flexibly rotated.

[0025] This device controls the lateral displacement generated during rotation by controlling the size of the connecting piece to adapt to different capacitor installations. This quadruple explosion-proof piece requires that the reliability of the connection between the middle and the connecting piece is less than that of the connection between the left and right explosion-proof pieces and the inner wall of the capacitor, but it will not loosen when no large deformation occurs. Therefore, this device also has the following settings.

[0026] The left explosion-proof disc 1 is provided with a first fixing plate 11 and a second fixing plate 12 on the inner side thereof, and the first fixing plate 11 and the second fixing plate 12 are symmetrically arranged at the two ends of the left explosion-proof disc 1. The right explosion-proof disc 2 is provided with a third fixing plate 21 and a fourth fixing plate 22 on the inner side thereof, and the third fixing plate 21 and the fourth fixing plate 22 are symmetrically arranged at the two ends of the right explosion-proof disc 2. The first fixing plate 11, the second fixing plate 12 and the third fixing plate 21, the fourth fixing plate 22 are arranged in a staggered manner.

[0027] Figure 4 This is a schematic diagram of the structure of the quadruple explosion-proof disc in the present invention in a dislocated state. Figure 5 for Figure 4 The bottom view of the quadruple explosion-proof disk is as follows: Figure 4 and Figure 5 As shown, during the rotation of the first connecting piece 31 and the second connecting piece 32, the first fixing piece 11, the second fixing piece 12 and the third fixing piece 21, the fourth fixing piece 22 are arranged in a staggered manner. This staggered state achieves adaptation to the capacitor housing by misaligning the left explosion-proof disc 1 and the right explosion-proof disc 2. This arrangement effectively utilizes space and avoids the downward accumulation of the connection structure at the connection point, thereby preventing it from conflicting with the internal filler. This arrangement greatly reduces the risk of use and improves the flexibility of adapting to installation.

[0028] A first end piece 311 and a second end piece 312 are provided on one side of the first connecting piece 31, and the first end piece 311 and the second end piece 312 are symmetrically arranged at both ends of the first connecting piece 31. A riveted first nut 51 is provided between the first end piece 311 and the first fixing piece 11, and a riveted second nut 52 is provided between the second end piece 312 and the third fixing piece 21. The first connecting piece 31 is used to connect the left explosion-proof disc 1 and the right explosion-proof disc 2 and provide space for automatic adaptation to installation. The riveted nuts are used here, firstly, the installation is convenient and stable, and secondly, it is convenient to provide a rotation space for the first connecting piece 31.

[0029] A third end piece 321 and a fourth end piece 322 are provided on one side of the second connecting piece 32, and the third end piece 321 and the fourth end piece 322 are symmetrically arranged at both ends of the second connecting piece 32. A third nut 53 is riveted between the third end piece 321 and the second fixing piece 12, and a fourth nut 54 is riveted between the fourth end piece 322 and the fourth fixing piece 22. The reasons for the arrangement here are the same as those mentioned above.

[0030] The first connecting piece 31 and the second connecting piece 32 are centrally symmetrical. The first connecting piece 31 and the second connecting piece 32 with opposite M-shaped openings in the matching cross section are arranged in this way, so that the first connecting piece 31 and the second connecting piece 32 will not interfere with each other, and such a symmetrical arrangement makes the rotation more stable during the adjustment of the spacing without eccentricity.

[0031] Figure 6 This is a schematic diagram of the structure of the quadruple explosion-proof disc of the present invention in an expanded state. Figure 7 for Figure 6 The bottom view of the quadruple explosion-proof disk is as follows: Figure 6 and Figure 7 As shown, this is the state when the left and right explosion-proof plates are unfolded to the extreme position, at which time the adaptive spacing size is the largest.

[0032] The quadruple explosion-proof disc of the present invention further comprises: a mounting structure 4. The mounting structure 4 comprises: a first mounting piece 41 arranged on the outside of the left explosion-proof disc 1, and a second mounting piece 42 arranged on the outside of the right explosion-proof disc 2. The first mounting piece 41 is provided with a first mounting hole 411, and the second mounting piece 42 is provided with a second mounting hole 421. The first mounting piece 41 and the second mounting piece 42 are used to be connected to the inner wall of the capacitor housing to fix the position of the quadruple explosion-proof disc.

[0033] The first mounting piece 41 is located above the left explosion-proof disc 1, and the second mounting piece 42 is located below the right explosion-proof disc 2. This arrangement ensures that when the first mounting piece 41 and the second mounting piece 42 are pulled by the expansion of the inner wall of the housing, the shear force at the position of the middle connecting piece is greater, making it easier to disconnect the connection of the connecting piece, thereby achieving the purpose of circuit breaker protection.

[0034] Figure 4-6 In order to show the rotation state of the connecting piece, the mounting structure 4 is omitted.

[0035] The adaptively installed quadruple explosion-proof disc described in this embodiment still has a certain margin when the inner wall of the capacitor expands, and will not be affected by slight deformation. In production practice, the safety value of the capacitor deformation is matched, and the size of the connecting piece is controlled to ensure that this device can achieve both installation adaptability and circuit breaker protection. This device has universality in a product series.

[0036] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A capacitor with four explosion-proof discs that automatically adapts to installation, characterized in that: include: A left explosion-proof disc (1) mounted on the inner wall of one side of a capacitor housing, a right explosion-proof disc (2) mounted on the inner wall of the other side of the capacitor housing, and a connection structure (3) detachably connected between the left explosion-proof disc (1) and the right explosion-proof disc (2); the connection structure (3) comprises: a first connection piece (31) rotatably connected to the left explosion-proof disc (1) and the right explosion-proof disc (2), respectively, and a second connection piece (32) rotatably connected to the left explosion-proof disc (1) and the right explosion-proof disc (2), respectively; the cross-sections of the first connection piece (31) and the second connection piece (32) are both M-shaped, and the M-shaped opening directions of the cross-sections of the first connection piece (31) and the second connection piece (32) are opposite; A first fixing plate (11) and a second fixing plate (12) are provided on the inner side of the left explosion-proof plate (1), and the first fixing plate (11) and the second fixing plate (12) are symmetrically arranged at two ends of the left explosion-proof plate (1); a third fixing plate (21) and a fourth fixing plate (22) are provided on the inner side of the right explosion-proof plate (2), and the third fixing plate (21) and the fourth fixing plate (22) are symmetrically arranged at two ends of the right explosion-proof plate (2); the first fixing plate (11), the second fixing plate (12) and the third fixing plate (21), the fourth fixing plate (22) are arranged in a staggered manner; The first connecting piece (31) and the second connecting piece (32) are centrally symmetrical.

2. A capacitor with four-piece explosion-proof discs that can be automatically installed according to claim 1, characterized in that: A first end piece (311) and a second end piece (312) are provided on one side of the first connecting piece (31), and the first end piece (311) and the second end piece (312) are symmetrically arranged at two ends of the first connecting piece (31); a first nut (51) is riveted between the first end piece (311) and the first fixing piece (11), and a second nut (52) is riveted between the second end piece (312) and the third fixing piece (21).

3. A capacitor with four-piece explosion-proof discs that can be automatically installed according to claim 1, characterized in that: A third end piece (321) and a fourth end piece (322) are provided on one side of the second connecting piece (32), and the third end piece (321) and the fourth end piece (322) are symmetrically arranged at two ends of the second connecting piece (32); a third nut (53) is riveted between the third end piece (321) and the second fixing piece (12), and a fourth nut (54) is riveted between the fourth end piece (322) and the fourth fixing piece (22).

4. A capacitor with four-piece explosion-proof discs that can be automatically installed according to claim 1, characterized in that: The invention also comprises: a mounting structure (4); the mounting structure (4) comprises: a first mounting plate (41) arranged on the outside of the left explosion-proof plate (1), and a second mounting plate (42) arranged on the outside of the right explosion-proof plate (2); the first mounting plate (41) is provided with a first mounting hole (411), and the second mounting plate (42) is provided with a second mounting hole (421).

5. A capacitor with four-piece explosion-proof discs that can be automatically installed according to claim 4, characterized in that: The first mounting plate (41) is located above the left explosion-proof plate (1), and the second mounting plate (42) is located below the right explosion-proof plate (2).

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