High-voltage thyristor voltage balancing device

Abstract

The utility model relates to the technical field of high-voltage thyristors, in particular to a voltage balancing device of a high-voltage thyristor, which comprises a guide upright post, a support radiator and thyristors, the guide upright post is formed by fixedly connecting two parallel upright posts through a lower pressing block, and a through hole groove structure is arranged in the middle of the guide upright post. A plurality of supporting heat radiators are slidably installed in through hole groove structures of two parallel guide stand columns, a supporting seat is fixedly arranged on the lower pressing block, the lowest supporting heat radiator makes contact with the supporting seat, and a thyristor is fixed between every two adjacent supporting heat radiators. The device is installed and integrated by adopting a separated structure, the integration level of the whole device is improved, the device is compact in structure, convenient to connect, simple in structure and convenient to install, unit devices are convenient to replace according to different use requirements, and the whole device does not need to be disassembled; and the installation structure is compact, the problems of wiring harness cross-linking and poor safety are avoided, the maintenance and replacement are fast, and the voltage-sharing safety of the series thyristors is embodied.

Description

Technical Field

[0001] The utility model relates to the technical field of high - voltage thyristors, and particularly relates to a high - voltage thyristor voltage balancing device. Background Art

[0002] In the field of power electronics, a high - voltage thyristor voltage balancing device is an important device to ensure that series - connected thyristors can evenly bear voltage in a stable blocking state. Traditional voltage balancing devices usually use resistors to form static voltage - equalizing branches, and connect the voltage - equalizing resistors and heat sinks through complex wires to achieve static voltage equalization of thyristors. However, this design has significant deficiencies: The assembly process is complex and time - consuming and labor - intensive: Since a large number of wires are required to connect the voltage - equalizing resistors and heat sinks, the assembly process is cumbersome, which not only increases labor costs and time costs, but also reduces production efficiency; Poor structural stability: Due to the complex cross - linking of wire harnesses, the device is prone to looseness or wire breakage during long - term operation or when subjected to external vibrations, affecting the voltage balancing effect and system stability; Poor safety: The complex cross - linking of wire harnesses increases the risk of short - circuit or failure, posing a potential threat to the safety of operators; Difficult maintenance: Once a component in the device fails, due to the compact structure and complex connections, it usually requires overall disassembly for repair or replacement, increasing the maintenance difficulty and cost.

[0003] In summary, the traditional high - voltage thyristor voltage balancing device has obvious deficiencies in terms of structural stability, safety, assembly efficiency, and maintenance convenience, and there is an urgent need for a new design to overcome these defects. Therefore, the utility model proposes a high - voltage thyristor voltage balancing device, aiming to improve the overall performance and use convenience of the device through optimized structural design. Summary of the Utility Model

[0004] In order to solve the above problems, the utility model provides a high - voltage thyristor voltage balancing device. The high - voltage thyristor voltage balancing device adopts a separated - structure installation and integration, which greatly improves the integration of the overall device, and has a compact structure, is convenient for connection, has a simple structure, is easy to install, is convenient for replacing unit devices according to different usage requirements without overall device disassembly; The installation structure is compact, avoiding problems such as wire - harness cross - linking and poor safety, having fast maintainability and replaceability, and reflecting the voltage - equalizing safety of series - connected thyristors.

[0005] The technical solution of the utility model is as follows:

[0006] A high-voltage thyristor voltage balancing device, comprising guiding columns, supporting radiators and thyristors. The guiding columns are formed by fixedly connecting two parallel columns through a pressing block. A through-hole groove structure is arranged in the middle of the guiding columns. A plurality of supporting radiators are slidably installed in the through-hole groove structures of the two parallel guiding columns. A supporting seat is fixedly arranged on the pressing block. The lowermost supporting radiator contacts the supporting seat. A thyristor is fixed between adjacent supporting radiators.

[0007] A locking pressing block is arranged at the upper part of the guiding columns. The locking pressing block is provided with a threaded hole, and a locking set screw is arranged in the threaded hole. The end of the locking set screw contacts the end of the supporting radiator.

[0008] Adjacent two of the supporting radiators are connected through a voltage-sharing resistor.

[0009] A first cushion block is arranged between the supporting radiator and the supporting seat.

[0010] A second cushion block is arranged between the end of the locking set screw and the supporting radiator.

[0011] The voltage-sharing resistor and the supporting radiator are connected through a connecting row.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. A high-voltage thyristor voltage balancing device disclosed by the present utility model. Through the design of the guiding columns and the through-hole groove structure, the supporting radiators can be directly slidably installed on the columns, greatly reducing the complex wire connection steps in the traditional design. This modular design makes the assembly process simpler and faster, reducing the labor cost and time cost, and significantly improving the production efficiency.

[0014] 2. A high-voltage thyristor voltage balancing device disclosed by the present utility model. The close cooperation between the guiding columns and the supporting radiators of the high-voltage thyristor voltage balancing device, as well as the setting of the locking pressing block and the locking set screw, ensure that the device can still maintain stability during long-term operation or under external vibration, effectively preventing problems such as loosening or wire breakage, thereby improving the voltage balancing effect and the overall stability of the system.

[0015] 3. A high-voltage thyristor voltage balancing device disclosed by the present utility model. The high-voltage thyristor voltage balancing device reduces the complex wire harness cross-linking, reduces the risk of short circuit or failure, and provides higher safety protection for the operators. At the same time, the simplified structure is also convenient for timely discovering and handling potential safety hazards.

[0016] 4. A high-voltage thyristor voltage balancing device disclosed by the present utility model. When a certain component (such as a thyristor or a voltage-sharing resistor) in the device fails, due to the modular design, it can be more easily replaced or repaired locally without overall disassembly, thereby reducing the maintenance difficulty and cost.

[0017] 5. A high-voltage thyristor voltage balancing device disclosed by the present utility model. By arranging voltage-sharing resistors between adjacent support radiators and connecting them with connection bars, it ensures that the thyristors can evenly bear the voltage in the stable blocking state, improving the accuracy and reliability of voltage balancing.

[0018] 6. A high-voltage thyristor voltage balancing device disclosed by the present utility model. The design of the support radiator optimizes the heat dissipation path, helps to dissipate the heat generated by the thyristors in time, keeps the thyristors within an appropriate working temperature range, and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to limit the present utility model.

[0020] In the drawings:

[0021] Figure 1 is the front-side structural view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0022] Figure 2 is the right-side structural view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0023] Figure 3 is the rear-side structural view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0024] Figure 4 is the left-side structural view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0025] Figure 5 is the top-side structural view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0026] Figure 6 is the obliquely-side backward view of a high-voltage thyristor voltage balancing device according to an embodiment of the present utility model;

[0027] The components represented by the reference numerals in the drawings are:

[0028] The utility model: 1. Guide column; 2. Support radiator; 3. Thyristor; 4. Support seat; 5. Locking pressure block; 6. Locking set screw; 7. Left column; 8. Right column; 9. Lower pressure block; 10. First cushion block; 11. Voltage equalizing resistor; 12. Connection row; 13. Second cushion block. Detailed implementation manner

[0029] As Figures 1 to 6 shown, a high-voltage thyristor voltage balancing device includes a guide column 1, a support radiator 2, and a thyristor 3. The guide column 1 is formed by fixedly connecting two parallel columns through a lower pressure block 9. A through-hole groove structure is provided in the middle of the guide column 1. A plurality of support radiators 2 are slidably installed in the through-hole groove structure of the two parallel guide columns 1. A support seat 4 is fixedly provided on the lower pressure block 9. The lowermost support radiator 2 contacts the support seat 4. A thyristor 3 is fixed between adjacent support radiators 2.

[0030] A locking pressure block 5 is provided at the upper part of the guide column 1. The locking pressure block 5 is provided with a threaded hole, and a locking set screw 6 is provided in the threaded hole. The end of the locking set screw 6 contacts the end of the support radiator 2.

[0031] Adjacent two of the support radiators 2 are connected by a voltage equalizing resistor 11.

[0032] A first cushion block 10 is provided between the support radiator 2 and the support seat 4.

[0033] A second cushion block 13 is provided between the end of the locking set screw 6 and the support radiator 2.

[0034] The voltage equalizing resistor 11 is connected to the support radiator 2 through a connection row 12.

[0035] In a specific embodiment:

[0036] A high-voltage thyristor voltage balancing device includes a guide column 1, a support radiator 2, and a thyristor 3. The middle of the guide column 1 is a through-hole groove structure. Both sides of the through-hole groove of the guide column 1 are guide blocks. Both ends of the support radiator 2 are provided with guide chutes. The support radiator 2 can be slidably arranged in the through-hole groove of the guide column 1. The guide blocks on both sides of the guide column 1 are located in the guide chutes at both ends of the support radiator 2. A positioning groove is provided in the middle of the support radiator 2; One end of the through-hole groove of the guide column 1 is provided with a support seat 4. A plurality of support radiators 2 are provided in the through-hole groove of the guide column 1. The support radiator 2 at one end contacts the support seat 4. A thyristor 3 is fixed between adjacent support radiators 2. The other end of the guide column 1 is fixed with a locking pressure block 5. The locking pressure block 5 is provided with a threaded hole, and a locking set screw 6 is provided in the threaded hole. The end of the locking set screw 6 can contact the end of the support radiator 2 at the other end. Adjacent two of the support radiators 2 are connected by a voltage equalizing resistor 11.

[0037] As Figure 1 shown, both ends of the thyristor 3 are respectively located in the positioning grooves of two adjacent support radiators 2.

[0038] As Figure 1 shown, the guiding upright column 1 includes a left upright column 7 and a right upright column 8 arranged in parallel. One ends of the left upright column 7 and the right upright column 8 are fixedly connected through a pressing block 9, and both ends of the pressing block 9 are fixedly connected with the left upright column 7 and the right upright column 8 through screws respectively. The other ends of the left upright column 7 and the right upright column 8 are fixedly connected through a locking pressing block 5.

[0039] As Figure 2 shown, the support seat 4 is fixed on the pressing block 9. A first cushion block 10 is arranged between the support radiator 2 at one end and the support seat 4, and a second cushion block 13 is arranged between the end of the locking set screw 6 and the support radiator 2 at the other end for adjusting the installation position of the support radiator 2.

[0040] As Figure 1 shown, a plurality of voltage-sharing resistors 11 are arranged in parallel, and the voltage-sharing resistors 11 are connected with the support radiator 2 through connection rows 12. Specifically, as Figure 3 shown, both ends of the voltage-sharing resistor 11 are fixedly connected with the end parts of the support radiator 2 through connection rows, and the connection rows are fixed through screws; connection seats are arranged at both ends of the support radiator 2. One end of the voltage-sharing resistor 11 is fixedly connected with one end of a support radiator 2 through a connection row 12, and the other end of the voltage-sharing resistor 11 is fixedly connected with one end of an adjacent support radiator 2 through a connection row 12. The axis of the voltage-sharing resistor 11 intersects with the axis of the guiding upright column 1.

[0041] Among them: the model of the support radiator 2 is WIC-350A10KV-FAP35X01 / KP350A 6500V-KT33DT-H38KPRn / TS22124 20026 / Nu11, and the manufacturer is Hubei Tajitai Semiconductor Co., Ltd.;

[0042] the model of the thyristor 3 is MTC110A / 3600V, and the manufacturer is Anshan Baijie Electronics Co., Ltd.;

[0043] the model of the uniform resistor 11 is RXGM100W-50R-J, and the manufacturer is Bengbu Shuanghuan Electronic Group Co., Ltd.;

[0044] the model of the connection row 12 is 50*5 tinned copper row, and the manufacturer is Liaoning Ruiheng Copper Industry Co., Ltd.

[0045] The utility model adopts a guiding column 1 with a through-hole groove structure in the middle as a guiding groove for supporting a radiator 2. Then, the supporting radiator 2 and thyristors are sequentially and alternately installed in the through-hole groove of the guiding column 1 in series. Then, equalizing resistors are used to connect adjacent radiators, and the equalizing resistors and the radiators are fixedly connected through connecting rows. The installation is integrated in a separated structure, which greatly improves the integration degree of the overall device, and has a compact structure, is convenient for connection, has a simple structure, is easy to install, is convenient for replacing unit devices according to different usage requirements without disassembling the overall device. The installation structure of the utility model is compact, avoiding problems such as cross-linking of wire harnesses and poor safety, and has fast maintainability and replaceability, reflecting the equalizing safety of series-connected thyristors.

Claims

1. A high-voltage thyristor voltage balancing device, characterized in that, It includes a guiding upright column (1), a supporting radiator (2) and a thyristor (3). The guiding upright column (1) is fixedly connected by two parallel upright columns through a lower pressing block (9). A through-hole groove structure is arranged in the middle of the guiding upright column (1). A plurality of supporting radiators (2) are slidably installed in the through-hole groove structures of the two parallel guiding upright columns (1). A supporting seat (4) is fixedly arranged on the lower pressing block (9). The lowermost supporting radiator (2) is in contact with the supporting seat (4). A thyristor (3) is fixed between adjacent supporting radiators (2).

2. The high-voltage thyristor voltage balancing device according to claim 1, wherein A locking pressing block (5) is arranged at the upper part of the guiding upright column (1). The locking pressing block (5) is provided with a threaded hole, and a locking set screw (6) is arranged in the threaded hole. The end of the locking set screw (6) is in contact with the end of the supporting radiator (2).

3. A high-voltage thyristor voltage balancing device according to claim 1, characterized in that, Adjacent two of the supporting radiators (2) are connected through a voltage-sharing resistor (11).

4. A high-voltage thyristor voltage balancing device according to claim 1, characterized in that A first cushion block (10) is arranged between the supporting radiator (2) and the supporting seat (4).

5. A high-voltage thyristor voltage balancing device according to claim 1, characterized in that, A second cushion block (13) is arranged between the end of the locking set screw (6) and the supporting radiator (2).

6. A high-voltage thyristor voltage balancing device according to claim 3, characterized in that, The voltage-sharing resistor (11) is connected with the supporting radiator (2) through a connecting row (12).

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