WO2017016508A1

WO2017016508A1 - Crimping type power module valve section

Info

Publication number: WO2017016508A1
Application number: PCT/CN2016/092095
Authority: WO
Inventors: 李华君; 朱新华; 肖晋; 谢云龙; 张承; 姚志国; 宋全刚; 孙晶晶
Original assignee: 许继电气股份有限公司; 国家电网公司
Priority date: 2015-07-28
Filing date: 2016-07-28
Publication date: 2017-02-02
Also published as: CN105006472A; CN105006472B

Abstract

Provided is a crimping type power module valve section, comprising an intermediate frame (100), a left end plate (200) and a right end plate (300). The two end plates are provided with two clamping devices. The intermediate frame (100) comprises an insulating pull rod (7), both ends of which are respectively fixedly connected to the left end plate (200) and the right end plate (300). The left end plate (200) and the right end plate (300) are respectively provided with a fixed mounting part for fixing the valve section on a mounting basal body. The left end plate (200) comprises a left end plate support (2) for being fixedly assembled with the right end plate (300) and a movable end plate (5) which is assembled on the left end plate support (2) and is guided to move in the left and right direction. The left end of the insulating pull rod (7) is fixedly connected to the movable end plate (5), so that the insulating pull rod (7) is fixedly connected to the left end plate (200). The fixed mounting part on the left end plate (200) is arranged on the left end plate support (2). One of the two clamping devices is arranged on the right end plate (300), and the other is arranged on the movable end plate (5).

Description

Crimp power module valve segment

Technical field

The invention relates to a crimped power module valve segment.

Background technique

Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converter, turn-off device and pulse width modulation technology. Compared with the traditional thyristor-based current source DC transmission technology, the flexible DC transmission technology uses a fully controlled power electronic device-insulated gate bipolar transistor (IGBT), which has a fast response, good controllability, and operation. Flexible mode, which can reduce system short circuit capacity and improve power quality. It has obvious advantages in the connection of renewable energy, grid-connected power generation, island power supply, and urban power grid.

The conventional crimping IGBT valve segment is similar to the thyristor valve segment crimping method, and is mostly a rigid connecting structure. The entire valve segment itself does not have self-adjusting capability, so the entire valve segment is prone to large mechanical stress.

Summary of the invention

In order to solve the existing technical problems, an embodiment of the present invention provides a pressure-connected power module valve segment.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

The embodiment of the invention provides a pressure-connected power module valve segment, comprising an intermediate frame extending in the left-right direction and left and right end plates disposed at the left and right ends of the intermediate frame, and the two end plates are configured to cooperate with each other to The two clamping devices of the valve group formed by the at least two power modules arranged in series are clamped in the direction, and the intermediate frame includes insulating rods respectively fixed to the left and right end plates at both ends, and the left and right end plates are respectively disposed There is a fixed mounting portion for fixing the valve segment to the mounting base, The left end plate includes a left end plate support fixedly assembled with the right end plate and a movable end plate assembled on the left end plate support guided in the left and right direction, and the left end of the insulating rod is fixedly connected with the movable end plate. a fixing tie rod is fixedly connected to the left end plate, and a fixed mounting portion on the left end plate is disposed on the left end plate support, one of the two clamping devices is disposed on the right end plate, and the other is disposed at the On the active end board.

In the above solution, the movable end plate is movably fitted on the left end plate support by a dovetail guide structure extending between the movable end plate and the left end plate support extending in the left-right direction.

In the above solution, the right end plate and the movable end plate respectively comprise an end plate body configured to install a corresponding clamping device, and the two clamping devices are correspondingly applied to the two end plate bodies for applying a force to the external loading mechanism. The loading device, the two top pressure loading devices respectively have a top pressure clamping portion configured to press the corresponding end portion of the valve group, and at least one of the two top pressure loading devices is an elastic pressing device.

In the above solution, the elastic top loading device includes a loading shaft that is guided and moved on the corresponding end plate body in a left-right direction. One end of the loading shaft facing the valve group is an inner end, and the loading shaft is provided with an outer end. a disc spring pressed against the loading shaft, the disc spring having an elastic pressing end configured to apply an elastic pressing force to the valve block, and the loading shaft is further provided with a configuration disposed outside the disc spring to push the loading shaft The lock nut that secures the loading shaft to the corresponding end plate body when the disc spring moves into position.

In the above solution, one of the two top loading devices is the elastic pressing device, and the other is a rigid pressing device. The rigid pressing device includes axially assembling the corresponding end plate body in the left and right direction. The spherical adjusting bolt on the upper side of the spherical adjusting bolt is pressed against the transmission shaft, and the driving shaft is slidably mounted in the left and right direction in a guiding sleeve fixed on the corresponding end plate body, and the driving shaft faces the valve block. One end is a rigid pressing end for applying a rigid pressing force to the valve block.

In the above solution, the right end plate includes a right end plate support and a fixed end plate fixed to the right end plate support by a bolt coupling structure, and the fixed installation portion of the right end plate is disposed on the right end plate support, and the right end of the insulation rod passes The fixed end plate is fixedly connected to realize the fixing of the insulating rod and the right end plate.

In the above solution, the right end plate and the movable end plate respectively comprise an end plate body configured to install a corresponding clamping device, and two ends of the insulating pull rod are respectively fixedly connected with the two end plate bodies, and are disposed on the side surface of the end plate body a card slot extending in the left-right direction, the corresponding end of the insulating rod is locked in the card slot in the left-right direction, and is detachably fixed on the end plate body and configured to press the insulating rod into the The platen in the card slot.

In the above solution, the left end plate supports of the right end plate and the left end plate are fixedly assembled by the insulating support beams extending in the left-right direction.

In the above solution, the power module is an IGBT sub-module, and the valve group includes an IGBT sub-module and an inter-module insulation block arranged in sequence in the left-right direction, and the ends of the valve group and the two clamping devices are respectively provided with ends Insulation block.

In the above solution, one side of the end insulating block facing the valve block is a pressing plane, and one end facing the corresponding clamping device is disposed to be engaged with the pressing portion of the corresponding clamping device. Positioning card slot.

The beneficial effects provided by the embodiments of the present invention are: in the valve section of the crimping power module provided by the embodiment of the present invention, the left end plate of the intermediate frame includes a left end plate support and a left end plate support that is guided and moved in the left and right direction. On the upper movable end plate, the fixed mounting portion of the left end plate is disposed on the left end plate support, and the left end of the insulating tie rod of the intermediate frame is fixedly connected to the movable end plate. Due to the action of the insulating tie rod, the movable end plate cooperates with the right end plate to clamp the positioning valve group through the two clamping devices. When the internal part of the valve section is internally stressed due to the rigid connection or when the components or the insulating rod inside the valve block are caused by thermal expansion and contraction, the movable end plate is driven by the stress in the left and right direction at the left end plate support. The fine adjustment movement is carried out to ensure the self-adjustment of the system stress in the left and right direction of the valve section as a whole, effectively eliminating the internal stress generated by the rigid connection inside the traditional valve section and the deformation of the part due to thermal expansion and contraction. The internal stress effectively improves the stability of the pressing force of the valve section of the crimping power module.

DRAWINGS

1 is a schematic structural view of an embodiment of a crimping power module valve segment provided by the present invention;

Figure 2 is a schematic structural view of the frame of Figure 1;

Figure 3 is a schematic view of the left clamping structure of Figure 1;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a schematic view of the right clamping structure of Figure 1;

Figure 6 is a cross-sectional view taken along line B-B of Figure 5;

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

The conventional crimping type power module valve section is mostly a rigid connecting structure. For example, in the Chinese invention patent application with the publication number of CN103354233A, a crimping type thyristor valve section is disclosed, and the thyristor valve section is arranged at intervals in the left and right direction. The left end plate and the right end plate, the left end plate and the end plate are fixedly assembled through the intermediate frame, the elastic clamping device is arranged on the right end plate, the pressing device is arranged on the left end plate, the elastic clamping device and the pressing device are used as two clips The holding device clamps and positions the valve group composed of the thyristors and the heat sinks disposed between the phases. In use, the elastic clamping device is pressed on one side, and the other side is pressed with a pressing tool to pressurize the valve block to achieve effective positioning of the valve block.

In the above-mentioned crimping mode of the power module valve section, the left and right end plates are respectively fixed on the frame beam as the mounting base by bolt fixing, and the insulating pull rods connecting the left and right end plates are also fixedly assembled on the two end plates. This makes the entire valve section as a whole rigid connection structure. Under different operating conditions, the valve block and the insulating tie rod in the valve section are deformed by the influence of stress, thermal expansion and contraction, etc., but the existing valve section structure is mostly rigid connection structure, the whole valve The segment itself does not have self-regulating ability, and the entire valve segment will generate large mechanical stress.

Based on this, in various embodiments of the present invention: in the crimping power module valve section, the left end plate of the intermediate frame includes a left end plate support and a movable end plate mounted on the left end plate support guided in the left and right direction. The fixed mounting portion of the left end plate is disposed on the left end plate support, and the left end of the insulating pull rod of the intermediate frame is fixedly connected to the movable end plate.

As shown in FIG. 1 to FIG. 6 , an embodiment of a pressure-connected power module valve segment, the power module valve segment in this embodiment is specifically an IGBT valve segment, and the IGBT valve segment includes an intermediate frame 100 extending in the left-right direction. And a left end plate 200 and a right end plate 300 disposed at the left and right ends of the intermediate frame 100, that is, a left end plate 200 is disposed at a left end of the intermediate frame 100, and a right end plate 300 is disposed at a right end of the intermediate frame 100, and two end plates (left end plate 200 and right end) The plate 300) is respectively provided with clamping devices, and the two clamping devices are configured to cooperate to clamp and position the valve group formed by the plurality of IGBT sub-modules arranged in series in the left-right direction, and the valve group includes the left and right The IGBT sub-module 19 and the inter-module insulating block 20 are sequentially arranged in the direction, and the end insulating block 18 is disposed between the left and right ends of the valve block and the two clamping devices, and the end insulating block 18 faces the valve block. One side is a top pressing plane, and one end facing the corresponding clamping device is provided with a positioning card slot configured to be engaged with the top pressing portion of the corresponding clamping device.

In an embodiment, as shown in FIG. 2, the intermediate frame includes a left end plate and a right end plate, and the left and right end plates are respectively provided with fixed mounting portions configured to fix the valve segments on the mounting base, wherein the fixed mounting portions are respectively Install holes for the bolts.

As shown in FIG. 2 to FIG. 4, the left end plate includes a left end plate support 2 and a movable end plate 5 movably mounted on the left end plate support 2 in the left-right direction, and the fixed mounting portion on the left end plate is correspondingly disposed. On the left end plate support 2, and the movable end plate 5 is movably fitted to the left end plate support by a dovetail guide structure extending between the movable end plate 5 and the left end plate support 2 in the left-right direction. 2 on. As shown in FIG. 2, FIG. 5 and FIG. 6, the right end plate includes a right end plate support 3 and a fixed end plate 6 fixed to the right end plate support 3 by a bolt coupling structure, and the fixed end portion of the right end plate is disposed at the right end plate. Support 3.

The two ends of the insulating rod 7 of the intermediate frame are respectively fixed to the left end plate and the right end plate. Specifically, the left end of the insulating rod 7 is fixedly connected to the movable end plate 5 to realize the fixing of the insulating rod 7 and the left end plate. The right end of the insulating rod 7 is fixedly connected to the fixed end plate 6 to fix the insulating rod 7 and the right end plate.

Specifically, the fixed end plate 6 and the movable end plate 5 respectively comprise an end plate body configured to install a corresponding clamping device, and two ends of the insulating tie rod 7 are respectively fixedly connected to the two end plate bodies, on the side of the end plate body A card slot extending in the left-right direction is disposed, and the corresponding end of the insulating rod 7 is locked in the card slot in the left-right direction, and is detachably fixed on the end plate body to be configured to press the insulating rod 7 The pressure plate 8 is mounted in the corresponding card slot.

Also, in an embodiment, in order to increase the overall structural strength of the valve section, the right end plate support 3 of the right end plate and the left end plate support 2 of the left end plate are fixedly assembled by the insulating support beams 4 extending in the left-right direction.

One of the two clamping devices on the intermediate frame is disposed on the right end plate and the other is disposed on the movable end plate 5, and the right end plate and the movable end plate 5 respectively include an end plate body for mounting the corresponding clamping device The two clamping devices are corresponding pressure loading devices corresponding to the external loading mechanism installed on the two end plate bodies, wherein the pressing device mounted on the movable end plate 5 is a rigid pressing device, and The top pressure loading device disposed on the right end plate is specifically an elastic top loading device.

In this embodiment, as shown in FIG. 3 and FIG. 4, the rigid top pressure loading device is disposed on the baffle body of the movable end plate 5. The rigid top pressure loading device specifically includes an axially spirally assembled to the movable end plate 5 in the left and right direction. The spherical adjusting bolt 11 on the baffle body, the end of the spherical adjusting bolt 11 facing the valve block is a ball head, the ball head of the spherical adjusting bolt 11 is press-fitted to the transmission shaft 10, and the transmission shaft 10 is slidably mounted in the left and right direction. In the guide sleeve 9 on the end plate body of the movable end plate 5, one end of the transmission shaft 10 facing the valve block is a rigid pressing end for applying a rigid pressing force to the valve block, and the rigid top of the transmission shaft 10 The inner end pressing plate 12 is fixed at the pressing end, and the inner pressing plate 12 and the corresponding side end are fixed The positioning slot on the insulating block 18 is fitted and fitted.

In an embodiment, as shown in FIG. 5 and FIG. 6, the elastic pressing device is disposed on the end plate body of the fixed end plate 6, and the elastic pressing device comprises guiding and moving in the left and right direction to be assembled on the fixed end plate 6. The loading shaft 13 on the end plate body defines an end of the loading shaft 13 facing the valve block as an inner end, and the loading shaft 13 is provided with a disc spring 14 whose outer end is pressed against the loading shaft, on the loading shaft 13 A retaining flange is provided with a press fit corresponding to the disc spring 14. The inner section of the disc spring 14 is an elastic pressing end configured to apply an elastic pressing force to the valve block, and the inner end of the loading shaft 13 is also coaxially fitted. There is a retaining ring 15, and an inner end surface of the loading shaft 13 is fixed with a baffle 16 for moving inwardly of the disc spring 14 and the retaining ring 15 to disengage the loading shaft. The inner end of the retaining ring 15 corresponds to the end of the corresponding side. The positioning slot on the insulating block 18 is fitted and fitted. Also, the loading shaft 13 is further provided with a lock disposed outside the disc spring 13 to fix the loading shaft 13 to the end plate body of the fixed end plate 6 when the loading shaft pushing the disc spring 13 is moved and loaded into position. The tightening nut 17 , the lock nut 17 here is screwed specifically on the loading shaft 13 , and the end plate body of the fixed end plate 6 is arranged to wear the stepped hole of the loading shaft 13 with the stepped surface facing inward, locking The outer end of the nut 17 is pressed against the inward step surface of the stepped bore.

In this embodiment, the valve segments can be assembled as follows:

Step 1. Fix the left end plate support 2 and the right end plate support 3 of the valve section on the operating platform as the base body, and lock the left end plate support 2 and the right end plate support 3 by screwing the insulating support beams 4 at both ends. Fixedly assembled together.

Step 2, the fixed end plate 6 and the right end plate support 3 are locked and fixed by bolts; the movable end plate 5 and the left end plate support 2 are clamped into position by the dovetail groove structure, and the two insulating rods with the end of the metal fitting are 7 The card plates 8 are respectively fitted into the card slots pre-set on the side surfaces of the end plate bodies of the fixed end plate 6 and the movable end plate 5, and the pressure plate 8 is locked by bolts on the end plate bodies of the fixed end plate 6 and the movable end plate 5.

Step 3, the guide sleeve 9 is fixed to the inner side of the movable end plate 5, and the inner side of the guide sleeve 9 is inserted into the transmission shaft 10, and the ball stud bolt 11 is screwed into the movable end plate 5, and the end of the ball stud bolt 11 is provided in the groove. a semi-circular ball head, the end face of the semi-spherical ball head is matched with the end surface of the transmission shaft 10, and continues to rotate The bolt is screwed out of the drive shaft 10 to the guide device 9, and inserted into the groove of the pressure plate 12 on the inner side of the valve section to be in mating contact with it.

Step 4, the disc spring 14 and the retaining ring 15 are respectively set on the side of the loading shaft 13, and the above parts are fixed by the stopper 16, and the other side of the loading shaft 13 is screwed with the lock nut 17, and the assembled elastic pressing is performed. The loading device is slid over the fixed end plate 6.

Step 5, the above structures collectively constitute the intermediate frame 100 of the crimping type IGBT valve segment, and the structure of the intermediate frame 100 is as shown in FIG.

Assembly valve segment:

In step 6, the end insulating block 18, the IGBT sub-module 19, and the inter-module insulating block 20 are sequentially assembled into the intermediate frame 1 as needed. The end insulating block 18, the IGBT sub-module 19, and the inter-module insulating block 20 are connected by internal axial screw connection, and the IGBT sub-module 19 is embedded in the insulating support beam 4 by a fixed block card protruding from the bottom of the heat sink.

Step 7, the rigid top pressure loading device on the left side of the valve section is inserted into the left end insulating block 18 by the inner pressure plate 12, and the elastic top pressure loading device on the right side of the valve section is inserted into the right side by the retaining ring 15 card. The end insulating block 18 is limited.

In step 8, the ball stud 11 is screwed by a mechanical wrench, and the side of the valve section is pressed, and the tooling is just inserted into the surface of the drive shaft 10 to stop the pressing.

Step 9, on the right side of the valve section, the top end of the hydraulic tool is sleeved on the fixed end plate 6, and the valve section is pressed with a hydraulic tool, and the central axis of the hydraulic tool is pressed against the loading shaft 13, so that the retaining ring 15 is limited The disc spring 14 and the disc spring 14 are deformed. When the gauge of the hydraulic tool shows the required pressure, the top pressure is stopped, and the lock nut 17 on the loading shaft is locked with a special wrench, the hydraulic tool is slowly relieved, and the pressure relief ends. After the tooling is removed from the fixed end plate 6, the valve segment is installed.

Here, steps 8 to 9 are the process of pressing the valve section valve section.

Step 10, similarly, when the valve section is maintained, the left and right valve sections can be arbitrarily selected according to the installation position of the valve section on the valve assembly for pressure relief.

In this embodiment, the power module is an IGBT module. In other embodiments, the power module may also be a thyristor or other fully controlled power module.

In this embodiment, the valve segment is detached by means of bidirectional pressure or bidirectional pressure relief. In other embodiments, the valve end can also be detached by one-side pressure or one-side pressure relief, where the power module It is preferable to use a power module such as a thyristor that does not deform much after clamping.

In this embodiment, the movable end plate is assembled and guided on the left end plate support by the dovetail guide structure. In other embodiments, the movable end plate can also be moved and assembled on the left end plate support by other guiding assembly structures. .

In this embodiment, one of the two clamping devices is a rigid top loading device and the other is an elastic pressing device. In other embodiments, the two clamping devices can also be two elastic pressing devices.

In this embodiment, the rigid top loading device can also adopt the rigid pressing device commonly used in the prior art, and the elastic pressing device can also adopt the elastic pressing device used in the assembly of the valve segment in the prior art.

In the pressure-connected power module valve segment provided by the embodiment of the present invention, the left end plate of the intermediate frame includes a left end plate support and a movable end plate assembled on the left end plate support guided and moved in the left-right direction, and the left end plate is fixedly mounted. The portion is disposed on the left end plate support, and the left end of the insulating rod of the intermediate frame is fixedly connected to the movable end plate. Due to the action of the insulating tie rod, the movable end plate cooperates with the right end plate to clamp the positioning valve group through the two clamping devices. When the internal part of the valve section is internally stressed due to the rigid connection or when the components or the insulating rod inside the valve block are caused by thermal expansion and contraction, the movable end plate is driven by the stress in the left and right direction at the left end plate support. The fine adjustment movement is carried out to ensure the self-adjustment of the system stress in the left and right direction of the valve section as a whole, effectively eliminating the internal stress generated by the rigid connection inside the traditional valve section and the internal stress generated by the thermal expansion and contraction deformation of the part, effectively increasing the pressure. The stability of the clamping force of the connected power module valve section. The solution provided by the embodiment of the present invention can solve the problem that the valve segment of the traditionally specified crimping power module has a lack of adjustment capability due to the prior art, and the valve segment is easy to produce. The technical problem of generating large mechanical stress.

In addition, the guide assembly of the movable end plate and the left end plate support is realized by the dovetail guide structure, which not only realizes stable guiding of the movable end plate, but also can effectively position the movable end plate in the front and rear and the up and down direction.

The two clamping devices are all the top loading devices for applying the force to the external loading mechanism, so that one end loading or both ends can be loaded according to actual needs, or one end unloading or simultaneous unloading at both ends according to actual needs. The entire valve section is more flexible and convenient to operate. Especially when clamping a power module with large deformation, if only one-side loading is used, since the deformation of the power module during the loading process is large, the loading stroke of the one-side loading is long, and the operation is inconvenient, and the two ends are used. If loaded, it can effectively reduce the one-side loading stroke and reduce the volume of the top pressure loading device. Moreover, at least one of the two top loading devices is an elastic pressing device, so that the safety of the power module can be ensured during the loading process.

In addition, the insulating rod is fixedly connected to the corresponding end plate body through the structure of the card slot and the pressing plate, thereby eliminating the connection of the insulating rod and the end plate body by bolt connection, thereby increasing system reliability.

The inner end plate of the right end plate and the left end plate are fixedly assembled by the insulating support beam, and the overall strength of the valve segment can be improved.

The power module is specifically an IGBT sub-module. By arranging the inter-module insulation stops on both sides of the IGBT sub-module and providing end insulation blocks between the two ends of the valve block and the two clamping devices, the IGBT sub-modules in the valve segment are ensured. Electrical independence between the two.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

A pressure-connected power module valve segment includes an intermediate frame extending in a left-right direction and left and right end plates disposed at left and right ends of the intermediate frame, and the two end plates are configured to be used together for clamping in the left-right direction Two clamping devices of the valve group formed by the at least two power modules arranged in series, the intermediate frame includes insulating rods respectively fixed to the left and right end plates at both ends, and the left and right end plates are respectively provided for fixing the valve segments a fixed mounting portion on the mounting base, the left end plate including a left end plate support configured to be fixedly assembled with the right end plate and a movable end plate mounted on the left end plate support guided in the left-right direction, the insulating pull rod The left end is fixedly connected to the movable end plate to fix the insulating tie rod to the left end plate, and the fixed mounting portion on the left end plate is disposed on the left end plate support, and one of the two clamping devices is disposed at The right end plate and the other are disposed on the movable end plate.
The crimping power module valve segment according to claim 1, wherein said movable end plate is movably assembled by a dovetail guide structure extending in a left-right direction disposed between the movable end plate and the left end plate support On the left end plate support.
The crimping power module valve segment according to claim 1 or 2, wherein the right end plate and the movable end plate respectively comprise an end plate body configured to mount a corresponding clamping device, and the two clamping devices are correspondingly mounted on the two a top pressure loading device on the end plate body for applying an external force to the external loading mechanism, the two top pressure loading devices respectively having a top pressure clamping portion configured to press the corresponding end portion of the valve group, and the two top pressure loading portions At least one of the top pressure loading devices in the device is an elastic top loading device.
The crimping power module valve segment according to claim 3, wherein said elastic top pressure loading means includes a loading shaft that is guided to move in a left-right direction and fitted to a corresponding end plate body, the loading shaft facing said valve block One end is an inner end, and the loading shaft is provided with a disc spring whose outer end is pressed against the loading shaft, and the disc spring has an elastic pressing end configured to apply an elastic pressing force to the valve block, and the loading shaft is also disposed on the loading shaft. The outer side of the disc spring is configured as a lock nut that fixes the loading shaft to the corresponding end plate body when the loading shaft pushes the disc spring to move into position.
The crimping power module valve segment of claim 4, wherein one of the two top loading devices is the elastic top loading device and the other is a rigid top loading device, the rigid top loading device The utility model comprises a spherical adjusting bolt axially assembled on the corresponding end plate body in the left-right direction, and one end of the spherical adjusting bolt facing the valve group is press-fitted with the transmission shaft, and the transmission shaft is slidingly mounted in the left-right direction to be fixed on the corresponding end plate body. In the upper guide sleeve, one end of the drive shaft facing the valve block is a rigid top end for applying a rigid pressing force to the valve block.
The crimping power module valve segment according to claim 1 or 2, wherein the right end plate comprises a right end plate support and a fixed end plate fixed to the right end plate support by a bolt coupling structure, and the right end plate is fixed The mounting portion is disposed on the right end plate support, and the right end of the insulating rod is fixedly connected to the fixed end plate to realize the fixing of the insulating rod and the right end plate.
The crimping power module valve segment according to claim 1 or 2, wherein the right end plate and the movable end plate respectively comprise an end plate body configured to mount a corresponding clamping device, and the two ends of the insulating tie rod are respectively The two ends of the plate body are fixedly connected, and a card slot extending in the left-right direction is disposed on a side surface of the end plate body, and the corresponding end of the insulating rod is locked in the card slot in the left-right direction, and the end plate body can also be A pressure plate configured to press the insulating rod into the card slot is fixed to the ground.
The crimping power module valve segment according to claim 7, wherein the left end plate supports of the right end plate and the left end plate are fixedly assembled by an insulating support beam extending in the left-right direction.
The crimping power module valve segment according to claim 3, wherein the power module is an IGBT sub-module, and the valve group comprises an IGBT sub-module and an inter-module insulation block arranged in sequence in the left-right direction, the valve block An end insulating block is respectively disposed between the two ends and the two clamping devices.
The crimping power module valve segment according to claim 9, wherein one side of the end insulating block facing the valve block is a top pressing plane, and one end facing the corresponding clamping device is disposed to be corresponding to the corresponding clip. The top clamping portion of the holding device is matched with the positioning card slot of the card.