CN216430087U - Cascaded uncontrolled converter valve silicon stack crimping structure - Google Patents

Abstract

The utility model discloses a cascade does not control converter valve silicon stack crimping structure, include: a silicon stack assembly; the power bus comprises a first power bus bar and a second power bus bar; the pressing structure component comprises a first pressing block, a second pressing block, a disc spring ejector rod and a locking nut; the hydraulic assembly is connected to the outer side of the second pressing block and used for applying pressing force; the two ends of the first tensioning ring are respectively sleeved at the upper end of the first compression block and the upper end of the second compression block, and the two ends of the second tensioning ring are respectively sleeved at the lower end of the first compression block and the lower end of the second compression block; and the first lifting ring and the second lifting ring are respectively fixed on the upper end surface of the first pressing block and the upper end surface of the second pressing block. This scheme sets up rings for hoist and mount through the up end at two compact heap, can avoid the taut ring of direct hoist and mount in the transportation of silicon stack crimping subassembly, reduces the silicon stack crimping subassembly and produces distortion's probability because of the atress is inhomogeneous.

Description

A cascading uncontrolled converter valve silicon stack crimping structure

technical field

The utility model relates to the field of converter valves, in particular to a silicon stack crimping structure for cascade uncontrolled converter valves.

Background technique

With the gradual promotion and implementation of the "dual carbon" goal, all walks of life are carrying out emission reduction tasks. As the core equipment in the power transmission system, converter valve products also need to be designed to reduce costs and materials. As the core component of the converter valve equipment, the design, assembly, reliability and maintainability of the converter valve silicon stack crimping structure will have an important impact on the overall function and economy of the converter valve equipment.

At present, the crimping structure of traditional DC converter valve on the market mainly has the following characteristics:

1. The tensioning device adopts epoxy resin plate, tensioning ring or multiple rod-shaped tie rods, which requires the use of a special tooling vehicle to complete the assembly and transfer of the silicon stack crimping assembly. For transfer, it is necessary to hoist epoxy resin plates, tension rings or rod-shaped tie rods, which may easily cause distortion and deformation of the silicon stack crimping components under the condition of uneven force;

2. An annular disc spring bushing is usually used for end face crimping between the disc spring assembly and the power busbar. This method has the disadvantage that the crimping end face is small, and the crimping end face is small, which will lead to excessive local pressure on the power busbar. Large, the copper bar is deformed and warped, resulting in reduced flow efficiency and local overheating.

3. In order to ensure the coaxiality of the pressure transmission elements such as power components, disc springs, and disc spring ejector rods, the disc spring components are realized by materials such as disc spring bushings, disc spring baffles, locating pins and mounting screws. There are many types of materials. , the installation is cumbersome, and the installation error is large, and the coaxiality of the pressure conduction element is difficult to guarantee.

4. The connection method between the compression structure component and the hydraulic cylinder, the existing solution mostly adopts the snap-fit connection, that is, the groove/boss fit is used to realize the snap-fit connection. There will inevitably be a situation in which the coaxiality of the hydraulic cylinder and the disc spring ejector is not satisfied, which will lead to the loss of the conduction of the pressing force, and the heat dissipation efficiency and the flow efficiency of the silicon stack will be lost.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a silicon stack crimping structure of a cascade uncontrolled converter valve, which can realize the convenient hoisting and transportation of the converter valve silicon stack crimping structure without distortion.

A silicon stack crimping structure for cascaded uncontrolled converter valves according to an embodiment of the present invention includes: a silicon stack assembly; a first power busbar and a second power busbar, which are respectively disposed on two sides of the silicon stack assembly. side; a compression structure assembly, including a first compression block, a second compression block, a disc spring, a disc spring top rod and a lock nut, the first power busbar, the silicon stack assembly, the second power busbar and The disc spring top rod is sandwiched between the first pressing block and the second pressing block in turn, and the second pressing block is provided with a through hole for one end of the disc spring top rod to pass through, and the lock The tightening nut is threadedly connected to the disc spring top rod and is used to control the position of the disc spring top rod in the through hole. The disc spring is clamped between the other end of the disc spring top rod and the second power bus. between the rows; a hydraulic assembly connected to the outer side of the second pressing block for applying a pressing force; a first tension ring and a second tension ring, the two ends of the first tension ring are respectively sleeved On the upper end of the first compression block and the upper end of the second compression block, the two ends of the second tension ring are respectively sleeved on the lower end of the first compression block and the second compression ring. The lower end of the pressing block; the first lifting ring and the second lifting ring are respectively fixed on the upper end face of the first pressing block and the upper end face of the second pressing block.

A silicon stack crimping structure for a cascade uncontrolled converter valve according to an embodiment of the present invention has at least the following beneficial effects: in this solution, by arranging hoisting rings on the upper end faces of the two pressing blocks for hoisting, the The tension ring is directly hoisted during the transfer of the stacking crimping assembly to reduce the probability of the silicon stacking crimping assembly being twisted and deformed due to uneven force.

According to some embodiments of the present invention, both the upper end of the first pressing block and the upper end of the second pressing block are provided with a tension ring cover plate, and the lower ends of the first lifting ring and the second lifting ring are provided with a tension ring cover plate. After passing through the tension ring cover plate, it is fixed with the upper end surface of the first pressing block and the upper end surface of the second pressing block.

According to some embodiments of the present invention, the lower ends of the first lifting ring and the second lifting ring are screw structures for screw connection with the upper end face of the first pressing block and the upper end face of the second pressing block .

According to some embodiments of the present invention, a pressure equalizing block is arranged between the second power busbar and the top rod of the disc spring.

According to some embodiments of the present invention, a guide groove is provided on the side of the pressure equalizing block to be slidably connected to the top rod of the disc spring.

According to some embodiments of the present invention, the hydraulic assembly includes a hydraulic pump, a hydraulic cylinder, and a pressing adapter, the hydraulic pump is used to provide power to the hydraulic cylinder, and two ends of the pressing adapter are respectively connected to The top rod of the hydraulic cylinder and the second pressing block are threadedly connected, and the pressing adapter is consistent with the central axis of the top rod of the disc spring.

Additional aspects and advantages of the invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the perspective view (including hydraulic pump) of the embodiment of the utility model;

Fig. 3 is the top view of the utility model embodiment;

4 is a cross-sectional view of an embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present utility model, it should be understood that the orientation descriptions related to orientations, such as up, down, front, rear, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution .

Referring to FIG. 1 to FIG. 3 , a silicon stack crimping structure of a cascaded uncontrolled converter valve according to an embodiment of the technical solution includes:

The silicon stack assembly 100 is used as a power device to be crimped;

The first power busbar 210 and the second power busbar 220 are respectively disposed on both sides of the silicon stack assembly 100 , and are electrically connected to the silicon stack assembly 100 as input and output terminals of the silicon stack assembly 100 ;

The compression structure assembly, as shown in FIG. 4 , the compression structure assembly includes a first compression block 310, a second compression block 320, a disc spring 330, a disc spring top rod 340 and a lock nut 350. The first compression block 310 is disposed opposite to the second pressing block 320. As a main frame, the first power busbar 210, the silicon stack assembly 100, the second power busbar 220 and the disc spring ejector rod 340 are sequentially sandwiched between the first pressing block 340. Between the compression block 310 and the second compression block 320, the second compression block 320 is provided with a through hole through which one end of the disc spring top rod 340 passes, and the locking nut 350 is threadedly connected to the disc on the spring top rod 340 and used to control the position of the disk spring top rod 340 in the through hole, the disk spring 330 is sandwiched between the other end of the disk spring top rod 340 and the second power busbar 220 to provide preload elasticity;

a hydraulic assembly, connected to the outside of the second pressing block 320 for applying a pressing force, and then transmitting it to the disc spring top rod 340 through the second pressing block 320;

A first tension ring 510 and a second tension ring 520, both ends of the first tension ring 510 are respectively sleeved on the upper end of the first compression block 310 and the upper end of the second compression block 320, Both ends of the second tightening ring 520 are respectively sleeved on the lower end of the first pressing block 310 and the lower end of the second pressing block 320 , and the crimping structure is tightened from the upper and lower ends respectively. effect;

The first lifting ring 610 and the second lifting ring 620 are respectively fixed on the upper end surface of the first pressing block 310 and the upper end surface of the second pressing block 320 .

In use, by directly arranging the first lifting ring 610 and the second lifting ring 620 on the upper end surfaces of the first pressing block 310 and the second pressing block 320 for hoisting, the direct hoisting during the transportation of the silicon stack crimping assembly can be avoided. The tension ring reduces the probability of twisting and deformation of the silicon stack crimping assembly due to uneven force.

As shown in FIG. 2, in some embodiments of the present invention, the upper end of the first pressing block 310 and the upper end of the second pressing block 320 are both provided with a tension ring cover plate 530, so The lower ends of the first lifting ring 610 and the second lifting ring 620 pass through the tension ring cover plate 530 and are fixed to the upper end surface of the first pressing block 310 and the upper end surface of the second pressing block 320, so It also plays the role of fixing the tension ring cover plate 530 , thereby avoiding the displacement of the first tension ring 510 under the tension ring cover plate 530 .

Specifically, in some embodiments of the present invention, the lower ends of the first hoisting ring 610 and the second hoisting ring 620 are screw structures for connecting with the upper end surface of the first pressing block 310 and the second pressing The upper end face of the tightening block 320 is threadedly connected, which can be easily disassembled and replaced while being tightened.

In order to avoid directly using the first power busbar 210 and the second power busbar 220 for voltage equalization, in some embodiments of the present invention, an equalization is provided between the second power busbar 220 and the disc spring top rod 340 . The pressure pad 700 can avoid deformation and damage of the first power busbar 210 and the second power busbar 220 .

Further, in some embodiments of the present invention, a guide groove 710 is provided on the side of the pressure equalizing block 700 to be slidably connected to the disc spring top rod 340, as shown in FIG. 4 , before the pressing force is applied, the disc spring The left end of the spring top rod 340 is inserted into the guide groove 710 of the pressure equalizing block 700. After applying the pressing force, it can be ensured that the disc spring top rod 340 will move along the depth direction of the inner wall of the groove until the pressing is completed. Compared with positioning pins, disc spring baffles and disc spring bushings, the design is simpler and the assembly is more convenient.

As shown in FIGS. 2 and 4 , in some embodiments of the present invention, the hydraulic components include a hydraulic pump 410 , a hydraulic cylinder 420 , and a compression adapter 430 , and the hydraulic pump 410 is used for the hydraulic cylinder 420 provides power, the two ends of the compression adapter 430 are respectively connected with the ejector rod of the hydraulic cylinder 420 and the second compression block 320 threadedly, and the compression adapter 430 is connected to the disc spring ejector rod 340 In this embodiment, the end of the connection between the compression adapter 430 and the second compression block 320 is provided with a groove for the disc spring top rod 340 to extend into and out. This design can ensure that the hydraulic cylinder 420 is connected to the disc spring. The coaxiality of the spring top rod 340 enables better conduction of the pressing force along the central axis and avoids unnecessary pressure loss. Compared with the bayonet connection method, the coaxiality of the diode, hydraulic cylinder and disc spring is better. Good protection, better conduction effect of pressing force on its axis, and higher safety during maintenance.

In some embodiments of the present invention, the silicon stack assembly 100 includes a plurality of water-cooled heat sinks 110 and diodes 120 arranged at intervals, and the outer sides of the silicon stack assembly 100 are all the water-cooled heat sinks 110 . To protect the diodes 120 inside, the corresponding first power busbars 210 and the second power busbars 220 are also attached to the outside of the water cooling radiator 110 .

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. Variations, the scope of the present invention is defined by the claims and their equivalents.

Claims (6)

1. A cascading uncontrolled converter valve silicon stack crimping structure is characterized in that: comprising: Silicon stack assembly (100); a first power busbar (210) and a second power busbar (220), respectively disposed on both sides of the silicon stack assembly (100); A compression structure assembly, including a first compression block (310), a second compression block (320), a disc spring (330), a disc spring top rod (340) and a locking nut (350), the first power The busbar (210), the silicon stack assembly (100), the second power busbar (220) and the disc spring ejector (340) are sandwiched between the first pressing block (310) and the second pressing block ( 320), the second pressing block (320) is provided with a through hole through which one end of the disc spring top rod (340) passes, and the locking nut (350) is threadedly connected to the disc spring top The rod (340) is used to control the position of the disk spring top rod (340) in the through hole, and the disk spring (330) is clamped between the other end of the disk spring top rod (340) and the second Between the power busbars (220); a hydraulic assembly, connected to the outside of the second pressing block (320) for applying a pressing force; A first tightening ring (510) and a second tightening ring (520), both ends of the first tightening ring (510) are respectively sleeved on the upper end of the first pressing block (310) and the second tightening ring (520). The upper ends of the second compression blocks (320), the two ends of the second tension ring (520) are respectively sleeved on the lower end of the first compression block (310) and the second compression block (320) lower end; The first lifting ring (610) and the second lifting ring (620) are respectively fixed on the upper end face of the first pressing block (310) and the upper end face of the second pressing block (320). 2 . The silicon stack crimping structure for cascaded uncontrolled converter valves according to claim 1 , wherein the upper end of the first pressing block ( 310 ) is connected to the second pressing block ( 320 ). 3 . ) are provided with a tension ring cover plate (530), and the lower ends of the first suspension ring (610) and the second suspension ring (620) pass through the tension ring cover plate (530) and are connected to the first The upper end face of the pressing block (310) is fixed with the upper end face of the second pressing block (320). 3. The silicon stack crimping structure for cascaded uncontrolled converter valves according to claim 2, wherein the lower ends of the first lifting ring (610) and the second lifting ring (620) are screw structures for use The upper end face of the first pressing block (310) is threadedly connected with the upper end face of the second pressing block (320). 4. The silicon stack crimping structure for cascaded uncontrolled converter valves according to claim 1, characterized in that: between the second power busbar (220) and the disc spring top rod (340), a Pressure equalizing block (700). 5. The silicon stack crimping structure for cascaded uncontrolled converter valves according to claim 4, characterized in that: a guide groove (710) is provided on the side of the pressure equalizing block (700) and the The disc spring top rod (340) is slidably connected. 6 . The silicon stack crimping structure for cascade uncontrolled converter valves according to claim 1 , wherein the hydraulic components comprise a hydraulic pump (410), a hydraulic cylinder (420), a compression adapter ( 430), the hydraulic pump (410) is used to provide power for the hydraulic cylinder (420), the two ends of the pressing adapter (430) are respectively connected with the ejector rod of the hydraulic cylinder (420), the The second pressing block (320) is threadedly connected, and the pressing adapter (430) is consistent with the central axis of the disc spring top rod (340).

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