Crimping type valve group maintenance device

Abstract

The utility model discloses a crimping type valve group maintenance device, relates to the technical field of power electronic devices, and solves the technical problem of low maintenance efficiency of a crimping type valve group in the prior art. The crimping type valve group maintenance device comprises a connecting assembly, and in a working state, one end of the connecting assembly is detachably installed at the bottom end of a crimping type valve group to be pressed; the pre-pressing assembly is detachably installed at the other end of the connecting assembly, and in the working state, the pre-pressing assembly is pressed at the top end of the to-be-pressed crimping type valve bank, and the pre-pressing assembly is used for providing pressure; wherein the pre-pressing assembly has a first state and a second state, in the first state, the pre-pressing assembly is in a compressed state, and pressure is stored; and in the second state, the pre-pressing assembly is in the stretching state, the pressure is released, and the compression joint type valve set is pressed. Therefore, due to the arrangement of the pre-pressing assembly, the maintenance efficiency of the crimping type valve group maintenance device is higher, and the practicability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronic devices, and in particular relates to a pressure-connected valve group maintenance device. Background Art

[0002] Power electronic devices are the core of contemporary power electronic technology. At present, high-voltage and high-power power electronic devices (such as diodes, thyristors, IGBTs, IGCTs, etc.) mainly adopt two types of packaging: modular and crimped. The modules composed of these semi-body power devices crimped into a string are called crimped valve groups. The crimped valve group has excellent characteristics such as double-sided heat dissipation and short-circuit failure mode. It is especially suitable for the series application of a large number of devices and has unique advantages in high-power applications. Therefore, modern power electronic technology is constantly developing towards large capacity and high power density, and crimped IGBTs, IGCTs, IEGTs, diodes, etc. are increasingly widely used. This type of valve group is crimped by a large press, with a pressure ranging from several tons to about ten tons. They are all crimped by the factory press and used on site.

[0003] However, once damage occurs on site, it cannot be maintained on site and the valve group needs to be sent back to the factory for crimping using a large press. This low maintenance efficiency leads to delays in the work progress. Utility Model Content

[0004] The utility model provides a pressure-connected valve group maintenance device, which is used to solve the technical problem of low maintenance efficiency of the pressure-connected valve group in the prior art.

[0005] The utility model is realized through the following technical solutions:

[0006] A crimping type valve group maintenance device, comprising:

[0007] A connecting assembly, in a working state, one end of which is detachably mounted on the bottom end of the crimping type valve group to be compressed;

[0008] A pre-pressing assembly is detachably mounted on the other end of the connecting assembly, and in a working state, the pre-pressing assembly is pressed against the top end of the crimping valve group to be pressed, and the pre-pressing assembly is used to provide pressure;

[0009] The pre-compression assembly has state 1 and state 2:

[0010] State 1: the pre-compression component is in a compressed state, storing pressure;

[0011] In state two, the pre-compression assembly is in an extended state, the pressure is released and the crimping valve group is compressed.

[0012] Furthermore, the pre-compression assembly comprises:

[0013] bolt;

[0014] A bottom plate having a first through hole extending along a first direction, wherein the bottom plate can be slidably sleeved outside the bolt along the first direction;

[0015] An elastic member, sleeved outside the bolt and coaxially arranged with the first through hole;

[0016] A top plate having a second through hole extending in a first direction, wherein the top plate is sleeved outside the bolt and is used to press the elastic member tightly against the bottom plate;

[0017] A nut is screwed onto the bolt, and the bottom plate, the elastic member, the top plate and the bolt are arranged along a first direction.

[0018] Furthermore, the elastic member is a butterfly spring.

[0019] Furthermore, the projection of the butterfly spring in the second direction is located within the outer edge of the projection of the bottom plate in the second direction, and the second direction and the first direction are arranged perpendicular to each other.

[0020] Further, the projection of the butterfly spring in the second direction is located within the outer edge of the projection of the top plate in the second direction.

[0021] Furthermore, the connecting assembly includes a plurality of connecting rods, one end of each of the connecting rods can be detachably mounted on the bottom end of the crimping valve group to be compressed, and the other end of each of the connecting rods can be detachably mounted on the top plate.

[0022] Furthermore, the plurality of connecting rods are evenly distributed between the bottom end of the crimping-type valve group to be compressed and the top plate along the circumferential direction of the first through hole.

[0023] Furthermore, both ends of the connecting rod are mounted on the bottom end of the crimping-type valve group to be compressed and the top plate by means of screws.

[0024] Furthermore, the number of the connecting rods is four, and the four connecting rods are located at four vertices of the same rectangle.

[0025] Furthermore, the top plate, the bottom plate and the connecting rod are all structural members made of steel.

[0026] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0027] The crimping valve group maintenance device provided by the utility model comprises a connecting component and a pre-pressing component. In a working state, one end of the connecting component can be detachably mounted on the bottom end of the crimping valve group to be pressed, and the pre-pressing component can be detachably mounted on the other end of the connecting component. In a working state, the pre-pressing component is pressed on the top end of the crimping valve group to be pressed, and the pre-pressing component is used to provide pressure, wherein the pre-pressing component has a state one and a state two. In the state one, the pre-pressing component is in a compressed state and stores pressure; in the state two, the pre-pressing component is in an extended state, releasing pressure and pressing the crimping valve group. Through the above structure, when using the crimping type valve group maintenance device provided by the utility model, first place the pre-pressing assembly on the crimping type valve group to be pressed, then connect the bottom end of the crimping type valve group to be pressed with the top end of the pre-pressing assembly through the connecting assembly, and make the pre-pressing assembly pressed on the crimping type valve group to be pressed, at this time, the pre-pressing assembly is in state one, then adjust the pre-pressing assembly so that the pre-pressing assembly is in state two, that is, the pre-pressing assembly extends downward, releases the pressure, and thus presses the crimping type valve group, in this way, the purpose of pressing the crimping type valve group is achieved by switching the state of the pre-pressing assembly, thereby achieving the purpose of repairing the crimping type valve group, in this way, there is no need to send the crimping type valve group to be pressed back to the factory and then crimp it by a large press, the crimping type valve group to be pressed can be pressed at the work site, thereby improving maintenance efficiency and avoiding delays in work progress. Therefore, through the setting of the pre-pressing assembly, the maintenance efficiency of the crimping type valve group maintenance device provided by the utility model is higher and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0029] Figure 1 A schematic diagram of the structure of a crimping type valve group maintenance device provided by an embodiment of the utility model;

[0030] Figure 2 Another structural schematic diagram of the crimping type valve group maintenance device provided by an embodiment of the utility model;

[0031] Figure 3 A schematic structural diagram of a pre-compression assembly provided in an embodiment of the utility model.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] 1-connecting rod, 2-pre-tightening assembly, 21-bolt, 22-bottom plate, 23-butterfly spring, 24-top plate, 25-nut, 3-crimped valve group. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0035] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Example:

[0039] This embodiment provides a crimping type valve group maintenance device, which is used to solve the technical problem of low maintenance efficiency of crimping type valve groups in the prior art. The crimping type valve group maintenance device includes a connection component and a pre-compression component 2, wherein:

[0040] In the working state, one end of the connection component is detachably mounted on the bottom end of the crimping valve group 3 to be compressed. The detachably mounted connection component facilitates disassembly, maintenance and parts replacement of the connection component.

[0041] The pre-compression assembly 2 can be detachably installed at the other end of the connecting assembly, and in the working state, the pre-compression assembly 2 is pressed on the top end of the crimping-type valve group 3 to be pressed, and the pre-compression assembly 2 is used to provide pressure, wherein the pre-compression assembly 2 has state one and state two: in state one, the pre-compression assembly 2 is in a compressed state and stores pressure; in state two, the pre-compression assembly 2 is in an extended state, releasing pressure and pressing the crimping-type valve group 3. By setting the pre-compression assembly 2 with switchable states, a pressure power source is provided for pressing the crimping-type valve group 3, so there is no need to use a large press to provide pressure, and the detachable pre-compression assembly 2 is convenient for disassembly, assembly and replacement of the pre-compression assembly 2.

[0042] Through the above structure, when using the crimping type valve group maintenance device provided by the utility model, the pre-pressing component 2 is first placed on the crimping type valve group 3 to be pressed, and then the bottom end of the crimping type valve group 3 to be pressed is connected to the top end of the pre-pressing component 2 through the connecting component, and the pre-pressing component 2 is pressed on the crimping type valve group 3 to be pressed. At this time, the pre-pressing component 2 is in state one, and then the pre-pressing component 2 is adjusted so that the pre-pressing component 2 is in state two, that is, the pre-pressing component 2 extends downward to release the pressure, thereby pressing the crimping type valve group 3. In this way, the state of the pre-pressing component 2 is switched to achieve the purpose of pressing the crimping type valve group 3, thereby achieving the purpose of repairing the crimping type valve group 3. In this way, there is no need to send the crimping type valve group 3 to be pressed back to the factory and then crimp it with a large press. The crimping type valve group 3 to be pressed can be pressed at the work site, thereby improving maintenance efficiency and avoiding delays in work progress. Therefore, by providing the pre-pressing component 2, the maintenance efficiency of the crimping type valve group maintenance device provided by the utility model is higher and the practicality is stronger.

[0043] An optional implementation of this embodiment is as follows: the pre-pressing assembly 2 includes a bolt 21, a bottom plate 22, an elastic member, a top plate 24 and a nut 25, wherein:

[0044] The bolt 21 can be disassembled and reused, which is convenient for maintenance and parts replacement.

[0045] The bottom plate 22 has a first through hole extending along a first direction. The bottom plate 22 can be slidably sleeved outside the bolt 21 along the first direction. The first direction is consistent with the direction of the axis of the bolt 21.

[0046] The elastic member is sleeved outside the bolt 21 and is coaxially arranged with the first through hole. In this way, through the arrangement of the elastic member, the elastic member is compressed to store energy. When power is needed for the compression-type valve group 3, the energy can be released by simply expanding and contracting the elastic member, thereby providing a pressure source for the compression-type valve group 3.

[0047] The top plate 24 has a second through hole extending along the first direction. The top plate 24 is sleeved outside the bolt 21. The top plate 24 is used to press the elastic member onto the bottom plate 22. Through the setting of the top plate 24, the compressed elastic member is pressed between the bottom plate 22 and the top plate 24 so that the elastic member stores energy.

[0048] The nut 25 is screwed onto the bolt 21, and the bottom plate 22, the elastic member, the top plate 24 and the bolt 21 are arranged along the first direction. Thus, the top plate 24 is fixed to the bolt 21 through the setting of the nut 25 to prevent the top plate 24 from moving along the first direction so that the energy stored in the elastic member is released.

[0049] Through the above structure, when using the crimping type valve group maintenance device provided by the embodiment of the utility model, it is first connected to the connecting assembly through the top plate 24, and then the other end of the connecting assembly is connected to the bottom end of the crimping type valve group 3 to be compressed, so that the bottom plate 22 is compressed on the top end of the crimping type valve group 3 to be compressed, and when it is necessary to provide power for compressing the crimping type valve group 3, it is only necessary to unscrew the nut 25 from the bolt 21, and the nut 25 used for fixing is lost, the elastic member is restored, and the position of the top plate 24 and one end of the connecting assembly is relatively fixed, so that the bottom plate 22 moves in the direction away from the top plate 24 and squeezes the crimping type valve group 3, so as to achieve the purpose of providing a pressure source, so that the crimping type valve group 3 is compressed.

[0050] Optionally, the elastic member is a butterfly spring 23, which has the ability to withstand a large load and can achieve elastic deformation with a large deflection as the workload changes.

[0051] An optional implementation of this embodiment is as follows: the projection of the butterfly spring 23 in the second direction is located within the outer edge of the projection of the bottom plate 22 in the second direction, and the second direction and the first direction are arranged perpendicular to each other.

[0052] Optionally, the projection of the disc spring 23 in the second direction is located within the outer edge of the projection of the top plate 24 in the second direction.

[0053] The bottom plate 22 and the top plate 24 having outer dimensions larger than those of the butterfly spring 23 make it easier to press the butterfly spring 23 between the bottom plate 22 and the top plate 24 .

[0054] An optional implementation of the present embodiment is as follows: the connecting assembly includes multiple connecting rods 1, one end of each of the multiple connecting rods 1 can be removably installed on the bottom end of the crimping type valve group 3 to be compressed, and the other end of each of the multiple connecting rods 1 can be removably installed on the top plate 24. In this way, by setting up multiple connecting rods 1, the top plate 24 and the bottom end of the crimping type valve group 3 to be compressed are connected, thereby preventing the butterfly spring 23 from releasing excessive power and damaging the connecting assembly, thereby causing the crimping type valve group maintenance device provided by the embodiment of the utility model to fail.

[0055] Optionally, multiple connecting rods 1 are evenly distributed along the circumferential direction of the first through hole between the bottom end of the crimped valve group 3 to be compressed and the top plate 24. Through the evenly distributed connecting rods 1, the force on each connecting rod 1 is more uniform, further reducing the probability of damage to the connecting assembly.

[0056] Optionally, the number of the connecting rods 1 is four, and the four connecting rods 1 are located at four vertices of the same rectangle.

[0057] Optionally, both ends of the connecting rod 1 are installed on the bottom end and the top plate 24 of the crimping valve group 3 to be compressed by screws, and the connecting rod 1 installed by screws is easier to disassemble and assemble.

[0058] An optional implementation of this embodiment is as follows: the top plate 24, the bottom plate 22 and the connecting rod 1 are all structural members made of steel, which has the advantages of high strength, strong compression and tensile resistance, and easy manufacturing.

[0059] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A crimping type valve group maintenance device, characterized in that: include: A connecting assembly, wherein in a working state, one end of the connecting assembly is detachably mounted on the bottom end of a crimping-type valve assembly (3) to be compressed; A pre-pressing assembly (2) is detachably mounted on the other end of the connecting assembly, and in a working state, the pre-pressing assembly (2) is pressed against the top end of the crimping valve assembly (3) to be pressed, and the pre-pressing assembly (2) is used to provide pressure; The pre-pressing component (2) has a first state and a second state: State 1, the pre-compression component (2) is in a compressed state, storing pressure; In state two, the pre-compression assembly (2) is in an extended state, releasing the pressure and compressing the crimping valve assembly (3).

2. A crimping type valve group maintenance device according to claim 1, characterized in that: The pre-compression assembly (2) comprises: Bolt (21); A bottom plate (22) having a first through hole extending along a first direction, wherein the bottom plate (22) can be slidably sleeved outside the bolt (21) along the first direction; An elastic member, sleeved outside the bolt (21) and coaxially arranged with the first through hole; A top plate (24) having a second through hole extending in a first direction, wherein the top plate (24) is sleeved outside the bolt (21), and the top plate (24) is used to press the elastic member onto the bottom plate (22); A nut (25) is screwed onto the bolt (21); and the bottom plate (22), the elastic member, the top plate (24) and the bolt (21) are arranged along a first direction.

3. A crimping type valve group maintenance device according to claim 2, characterized in that: The elastic member is a butterfly spring (23).

4. A crimping type valve group maintenance device according to claim 3, characterized in that: The projection of the butterfly spring (23) in the second direction is located within the outer edge of the projection of the bottom plate (22) in the second direction, and the second direction is perpendicular to the first direction.

5. A crimping type valve group maintenance device according to claim 4, characterized in that: The projection of the butterfly spring (23) in the second direction is located within the outer edge of the projection of the top plate (24) in the second direction.

6. A crimping type valve group maintenance device according to claim 2, characterized in that: The connection assembly comprises a plurality of connection rods (1), one end of each of the connection rods (1) being detachably mounted on the bottom end of the crimping valve group (3) to be compressed, and the other end of each of the connection rods (1) being detachably mounted on the top plate (24).

7. A crimping type valve group maintenance device according to claim 6, characterized in that: The plurality of connecting rods (1) are evenly distributed along the circumferential direction of the first through hole between the bottom end of the crimping valve group (3) to be compressed and the top plate (24).

8. A crimping type valve group maintenance device according to claim 7, characterized in that: Both ends of the connecting rod (1) are mounted on the bottom end of the crimping valve group (3) to be compressed and the top plate (24) by means of screws.

9. A crimping type valve group maintenance device according to claim 8, characterized in that: The number of the connecting rods (1) is four, and the four connecting rods (1) are located at four vertices of the same rectangle.

10. A crimping type valve group maintenance device according to claim 9, characterized in that: The top plate (24), the bottom plate (22) and the connecting rod (1) are all structural parts made of steel.

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