A short-circuit discharging device for a converter valve capacitor and a converter valve

Abstract

The utility model provides a kind of for short-circuiting discharging device and thyristor valve of converter capacitor, including installation mechanism, longitudinal guide mechanism and short-circuiting discharging mechanism, short-circuiting discharging mechanism includes moving contact insulation rod, static contact insulation rod, contact patch unit, short-circuiting unit, every contact patch unit includes discharge resistance, two static contact patch, every short-circuiting unit includes the conductive sheet and insulating sheet connected on moving contact insulation rod, the first end of two static contact patches in every contact patch unit is connected with the positive and negative pole of capacitor respectively.Such by operating the operating mechanism of thyristor valve drives rotary arm rotation, combine transmission rod transmission drives moving contact insulation rod reciprocating sliding along longitudinal guide mechanism, by the disconnection or short-circuiting of static contact patch and conductive sheet, complete the disconnection or short-circuiting discharge between capacitor positive and negative pole, it is easy to operate, can drive multiple short-circuiting discharging mechanism to realize the discharge of multilayer capacitor at a time, greatly improve efficiency, adapt to the heavy workload of capacitor discharge.

Description

Technical Field

[0001] This utility model relates to the field of flexible DC transmission technology, and in particular to a short-circuit discharge device for a converter valve capacitor and a converter valve. Background Technology

[0002] In recent years, flexible DC transmission technology has gained widespread application due to its advantages of independently adjusting active and reactive power, enabling it to transmit power to wireless networks. This overcomes the inherent defects of traditional high-voltage DC transmission, extends the advantages of high-voltage DC transmission to distribution networks, and greatly broadens the application scope of high-voltage DC transmission. my country is rich in natural resources, so flexible DC technology has been widely used.

[0003] The converter valve tower is a core component of voltage source converter high-voltage direct current transmission technology, and the safety of its operation and maintenance is paramount. As the voltage continuously increases, the voltage of each sub-unit of the converter valve also gradually increases. However, during maintenance power outages, it is impossible to determine whether the capacitors of each sub-unit have fully discharged, nor is there an effective measure to discharge all the DC capacitors of all sub-units in the tower at once. Therefore, performing maintenance on the tower without fully discharging the DC capacitors of all sub-units poses a significant safety risk to personnel.

[0004] A better approach now is to design a small discharge rod with a discharge resistor connected in series in the positive and negative circuits. This way, personnel can discharge the capacitors of each sub-unit before performing maintenance. However, this approach has two problems. First, there is the issue of convenience. A single discharge device is quite large and cumbersome to operate, and discharging the capacitors of hundreds of sub-units in each valve tower is a huge workload. Second, there is the issue of safety. Because the sub-unit voltage is high, if the discharge resistor is not selected properly or the operation is improper, it can easily cause voltage surges. In addition, the operation time of a single discharge rod is difficult to determine.

[0005] Therefore, it is necessary to propose a short-circuit discharge device for the capacitor of the converter valve and the converter valve to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0006] The main objective of this invention is to provide a short-circuit discharge device for converter valve capacitors, in order to solve the problems of large workload and safety issues in the discharge methods of the prior art.

[0007] To achieve the above objectives, this utility model provides a short-circuit discharge device for a converter valve capacitor, comprising a mounting mechanism, a longitudinal guiding mechanism, and a short-circuit discharge mechanism; wherein,

[0008] The mounting mechanism is used to connect to the capacitor of the converter valve, and the longitudinal guide mechanism is connected to the mounting mechanism;

[0009] The short-circuit discharge mechanism includes a moving contact insulating rod, a stationary contact insulating rod, multiple contact pieces spaced apart along the longitudinal direction, and multiple short-circuit units arranged sequentially along the longitudinal direction. Each contact piece includes a discharge resistor and two stationary contacts spaced apart along the longitudinal direction. Each short-circuit unit includes a conductive sheet and an insulating sheet connected side-by-side along the longitudinal direction to the moving contact insulating rod.

[0010] The stationary contact insulating rod is connected to the mounting mechanism. One end of the moving contact insulating rod is used to connect to the transmission rod of the converter valve to be slidably connected to the longitudinal guide mechanism in the longitudinal direction. The stationary contact insulating rod and the moving contact insulating rod are spaced apart in the transverse direction. The first end of the stationary contact piece is connected to the stationary contact insulating rod, and the second end of the stationary contact piece abuts against the shorting unit. The first ends of the two stationary contact pieces in each contact piece unit are respectively connected to the positive and negative terminals of the capacitor. The discharge resistor is connected to the first end of the stationary contact piece connected to the positive terminal of the capacitor.

[0011] Preferably, the installation mechanism includes multiple installation groups spaced apart along the longitudinal direction, each installation group includes two installation units arranged opposite each other along the longitudinal direction, each installation unit includes a mounting base and a supporting static insulator, the mounting base is used to connect to the capacitor, the supporting static insulator is connected to the mounting base, and the static contact insulating rod is connected to the top of the supporting static insulator.

[0012] Preferably, the longitudinal guiding mechanism includes a longitudinal guide rail, and each of the mounting groups is provided with a corresponding longitudinal guide rail, the two ends of which are respectively connected to two adjacent mounting bases.

[0013] Preferably, the short-circuit discharge mechanism further includes a sliding component, with one sliding component correspondingly disposed on each of the longitudinal guide rails; wherein,

[0014] The sliding assembly includes a sliding block and a connecting stationary insulator. The sliding block is slidably connected to the longitudinal guide rail along the longitudinal direction. The connecting stationary insulator is connected to the sliding block. The moving contact insulating rod is connected to the top of the connecting stationary insulator.

[0015] Preferably, the first end of the stationary contact piece has a connecting protrusion protruding from the end away from the moving contact insulating rod, and the connecting protrusions of the two stationary contacts in each contact piece unit are respectively connected to the positive and negative terminals of the capacitor.

[0016] Preferably, each of the stationary contact pieces has two contacts at its second end.

[0017] Preferably, the longitudinal length of each conductive sheet is greater than the longitudinal distance between the two contacts in each stationary contact sheet.

[0018] Preferably, it also includes a boss, and the boss is connected to the two contacts at the second end of each of the stationary contact pieces.

[0019] This application also provides a converter valve, including a converter valve tower, a capacitor, a rotating assembly, and an operating mechanism. The converter valve tower includes multiple vertically spaced installation spaces, each of which is connected to the capacitor. The operating mechanism is located on one side of the converter valve tower. Multiple rotating assemblies are connected coaxially along a vertical axis, with one rotating assembly corresponding to one side of each installation space. Each rotating assembly includes a support tube, a rotating arm, and a transmission rod. The support tube at the bottom layer is connected to the drive end of the operating mechanism. The rotating arm is connected to the support tube, and one end of the transmission rod is connected to the rotating arm. The application also includes multiple short-circuit discharge devices for the converter valve capacitor as described above. One short-circuit discharge device for the converter valve capacitor is correspondingly located in each installation space. The mounting mechanism of the short-circuit discharge device for the converter valve capacitor is connected to the capacitor. One end of the moving contact insulating rod of the short-circuit discharge device for the converter valve capacitor is connected to the other end of the transmission rod.

[0020] Preferably, the number of installation spaces is five.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model provides a short-circuit discharge device for a converter valve capacitor and a converter valve, including an installation mechanism, a longitudinal guide mechanism, and a short-circuit discharge mechanism. The short-circuit discharge mechanism includes a moving contact insulating rod, a stationary contact insulating rod, a contact unit, and a short-circuit unit. Each contact unit includes a discharge resistor and two stationary contacts. Each short-circuit unit includes a conductive sheet and an insulating sheet connected to the moving contact insulating rod. The stationary contact insulating rod is connected to the installation mechanism. One end of the moving contact insulating rod is used to connect to the transmission rod of the converter valve to be slidably connected to the longitudinal guide mechanism in the longitudinal direction. The stationary contact insulating rod and the moving contact insulating rod are spaced apart in the transverse direction. The first end of the stationary contact is connected to the stationary contact insulating rod, and the second end of the stationary contact abuts against the short-circuit unit. The first ends of the two stationary contacts in each contact unit are respectively connected to the positive and negative terminals of the capacitor. The discharge resistor is connected to the first end of the stationary contact connected to the positive terminal of the capacitor. By operating the converter valve, the rotating arm is driven to rotate, and the transmission rod drives the moving contact insulating rod to slide back and forth along the longitudinal guide mechanism. By disconnecting or short-circuiting the stationary contact plate and the conductive plate, the discharge between the positive and negative terminals of the capacitor is completed. The operation is convenient and multiple short-circuit discharge mechanisms can be driven at one time to achieve the discharge of multi-layer capacitors, which greatly improves efficiency and can adapt to the large workload of capacitor discharge. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the overall structure of this utility model in an application scenario according to one embodiment;

[0025] Figure 2 This is a three-dimensional schematic diagram of a short-circuit discharge device in one embodiment of the present invention;

[0026] Figure 3 This is a plan view of a short-circuit discharge device according to one embodiment of the present invention;

[0027] Figure 4 This is a partially enlarged schematic diagram of the mounting mechanism and the longitudinal guide mechanism in one embodiment of the present invention;

[0028] Figure 5 This is a partial schematic diagram of the connection between the rotating component and the moving contact insulating rod in one embodiment of the present invention.

[0029] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] Explanation of icon numbers:

[0031] 10. Installation mechanism; 110. Installation base; 120. Supporting stationary insulator; 20. Longitudinal guide mechanism; 210. Longitudinal guide rail; 30. Short-circuit discharge mechanism; 310. Moving contact insulating rod; 320. Stationary contact insulating rod; 330. Contact piece unit; 331. Discharge resistor; 332. Stationary contact piece; 333. Connecting protrusion; 334. Boss; 340. Short-circuit unit; 341. Conductive piece; 342. Insulating piece; 350. Sliding assembly; 351. Sliding block; 352. Connecting stationary insulator; 40. Converter valve; 410. Converter valve tower; 420. Capacitor; 430. Rotating assembly; 431. Support tube; 432. Rotating arm; 433. Transmission rod; 440. Operating mechanism. Detailed Implementation

[0032] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Please see the appendix Figure 1-5 This utility model provides a short-circuit discharge device for capacitor 420 of converter valve 40, comprising a mounting mechanism 10, a longitudinal guide mechanism 20, and a short-circuit discharge mechanism 30. First, it should be noted that in this application, "longitudinal" refers to the length direction of converter valve tower 410, and "lateral" refers to the width direction of converter valve tower 410, as shown in the accompanying drawings; the details are as follows:

[0037] The mounting mechanism 10 is used to connect to the capacitor 420 of the converter valve 40, and the longitudinal guide mechanism 20 is connected to the mounting mechanism 10; the short-circuit discharge mechanism 30 includes a moving contact insulating rod 310, a stationary contact insulating rod 320, a plurality of contact pieces 330 arranged longitudinally at intervals, and a plurality of short-circuit units 340 arranged longitudinally in sequence. Each contact piece 330 includes a discharge resistor 331 and two stationary contacts 332 arranged longitudinally at intervals. Each short-circuit unit 340 includes a conductive piece 341 and an insulating piece 342 connected side-by-side longitudinally to the moving contact insulating rod 310; wherein, the stationary contact insulating rod 320 is connected to the capacitor 420 of the converter valve 40. On the mounting mechanism 10, one end of the moving contact insulating rod 310 is used to connect with the transmission rod 433 of the converter valve 40 to be slidably connected to the longitudinal guide mechanism 20 in the longitudinal direction. The stationary contact insulating rod 320 and the moving contact insulating rod 310 are arranged laterally. The first end of the stationary contact piece 332 is connected to the stationary contact insulating rod 320, and the second end of the stationary contact piece 332 abuts against the shorting unit 340. The first ends of the two stationary contact pieces 332 in each contact piece unit 330 are respectively connected to the positive and negative terminals of the capacitor 420. The discharge resistor 331 is connected to the first end of the stationary contact piece 332 connected to the positive terminal of the capacitor 420.

[0038] Specifically, the short-circuit discharge device for capacitor 420 of converter valve 40 in this application includes a mounting mechanism 10, a longitudinal guide mechanism 20, and a short-circuit discharge mechanism 30. The mounting mechanism 10 is used for mounting the longitudinal guide mechanism 20 and the short-circuit discharge mechanism 30, and is connected to the capacitor 420 so that the short-circuit discharge mechanism 30 can be short-circuited with the capacitor 420. The short-circuit discharge mechanism 30 is used to short-circuit all DC capacitors of converter valve tower 410 to achieve the purpose of discharge, so as to facilitate subsequent work and maintenance by technicians.

[0039] The short-circuit discharge mechanism 30 includes a moving contact insulating rod 310, a stationary contact insulating rod 320, multiple contact pieces 330 arranged longitudinally at intervals, and multiple short-circuit units 340 arranged longitudinally in sequence. The moving contact insulating rod 310 is used for mounting the short-circuit units 340. The short-circuit units 340 complete the disconnection and short-circuiting between the short-circuit units 340 and the contact pieces 330 by cooperating with the contact pieces 330 and moving longitudinally with the moving contact insulating rod 310. Therefore, the stationary contact insulating rod 320 is connected to the mounting mechanism 10 and remains stationary, while the moving contact insulating rod 310 is slidably connected to the longitudinal guide mechanism 20 on the mounting mechanism 10, so that it can slide along the longitudinal guide mechanism 20. One end of the moving contact insulating rod 310 is connected to the transmission rod 433 of the converter valve 40, so that it can slide through the transmission rod 433 of the converter valve 40.

[0040] Each contact unit 330 includes a discharge resistor 331 and two longitudinally spaced stationary contacts 332. Each short-circuit unit 340 includes a conductive sheet 341 and an insulating sheet 342 connected longitudinally side-by-side to the moving contact insulating rod 310. The first end of each stationary contact 332 is mounted on the stationary contact insulating rod 320, and the first ends of the two stationary contacts 332 are respectively connected to the positive and negative terminals of the capacitor. The second end of each stationary contact 332 is used to contact the conductive sheet 341 and the insulating sheet 342 in the short-circuit unit 340. When no short-circuit discharge is performed, the second end of one stationary contact 332 overlaps the insulating sheet 342, and the second end of the other stationary contact 332 overlaps the conductive sheet 341. When short-circuit discharge is required, the second end of one stationary contact 332 overlaps the insulating sheet 342, and the second end of the other stationary contact 332 overlaps the conductive sheet 341. The rotating mechanism 440 drives the rotating arm 432 to rotate. The transmission rod 433 connected to the rotating arm 432 drives the moving contact insulating rod 310 to slide longitudinally until the second ends of the two stationary contact pieces 332 are both in contact with the conductive piece 341. A closed circuit is formed by the positive and negative terminals of the capacitor that are in contact with the first ends of the two stationary contact pieces 332, achieving the effect of short-circuiting discharge. A discharge resistor 331 is provided on the first end of the stationary contact piece 332 connected to the positive terminal of the capacitor 420. It can protect the circuit components, limit the current, and discharge the capacitor 420 before the two stationary contact pieces 332 are in contact with the conductive piece 341. After the two stationary contact pieces 332 move to contact the conductive piece 341, they short-circuit and discharge with the capacitor 420.

[0041] In a preferred embodiment of the present invention, the mounting mechanism 10 includes a plurality of mounting groups arranged at intervals along the longitudinal direction. Each mounting group includes two mounting units arranged opposite each other along the longitudinal direction. Each mounting unit includes a mounting base 110 and a supporting static insulator 120. The mounting base 110 is used to connect to the capacitor 420. The supporting static insulator 120 is connected to the mounting base 110. The static contact insulating rod 320 is connected to the top of the supporting static insulator 120.

[0042] It should be noted that by setting multiple mounting groups, the entire short-circuit discharge device can be extended and placed on the capacitors 420 of each layer of the converter valve tower 410. The stability of the installation is improved by uniform distribution. Each mounting group also includes two mounting units arranged opposite each other in the longitudinal direction. The two opposite mounting units facilitate the installation of the longitudinal guide mechanism 20. Each mounting unit includes a mounting base 110 and a supporting static insulator 120. The mounting base 110 is used for mounting the supporting static insulator 120 and the longitudinal guide mechanism 20, so that the two ends of the longitudinal guide mechanism 20 are respectively mounted on two mounting bases 110, and each mounting base 110 is spaced apart from the other end of the longitudinal guide mechanism 20 to mount one supporting static insulator 120. The supporting static insulator 120 is used for mounting and connecting the static contact insulating rod 320.

[0043] In a preferred embodiment of the present invention, the longitudinal guide mechanism 20 includes a longitudinal guide rail 210, and each of the mounting groups is provided with a corresponding longitudinal guide rail 210. The two ends of the longitudinal guide rail 210 are respectively connected to two adjacent mounting bases 110.

[0044] It should be noted that the longitudinal guide rail 210 can adopt a convex cross-section structure to facilitate the installation of the moving contact insulating rod 310 at the top, and the guiding effect is good.

[0045] In a preferred embodiment of this utility model, the short-circuit discharge mechanism 30 further includes a sliding component 350, with one sliding component 350 correspondingly disposed on each of the longitudinal guide rails 210; wherein,

[0046] The sliding assembly 350 includes a sliding block 351 and a connecting stationary insulator 352. The sliding block 351 is slidably connected to the longitudinal guide rail 210 along the longitudinal direction. The connecting stationary insulator 352 is connected to the sliding block 351. The moving contact insulating rod 310 is connected to the top of the connecting stationary insulator 352.

[0047] It is worth noting that the sliding assembly 350 is used to facilitate the sliding connection between the moving contact insulating rod 310 and the longitudinal guide rail 210. It includes a sliding block 351 and a connecting stationary insulator 352. The sliding block 351 is slidably connected to the longitudinal guide rail 210, and its interior can be recessed to form a groove to match the convex structure of the longitudinal guide rail 210. The connecting stationary insulator 352 is used to connect the moving contact insulating rod 310 and the slider, thus serving as a connection.

[0048] In a preferred embodiment of the present invention, the first end of the stationary contact piece 332 is provided with a connecting protrusion 333 protruding from the end away from the moving contact insulating rod 310, and the connecting protrusion 333 of the two stationary contact pieces 332 in each contact piece unit 330 is respectively connected to the positive and negative terminals of the capacitor 420.

[0049] It is worth noting that the connecting protrusion 333 can extend out of the stationary contact insulating rod 320, thereby allowing it to be connected to the positive and negative terminals of the capacitor 420, facilitating connection and assembly.

[0050] Furthermore, each of the stationary contact pieces 332 has two contacts at its second end.

[0051] It should be understood that double contacts can increase the number of contacts and reduce arcing and overheating caused by poor contact, thereby extending the service life of the contacts.

[0052] Furthermore, the longitudinal length of each of the conductive pieces 341 is greater than the longitudinal spacing between the two contacts in each of the stationary contact pieces 332.

[0053] It should be noted that this arrangement ensures that both contacts of the stationary contact 332 can be distributed on the conductive sheet 341 during short-circuit discharge.

[0054] Furthermore, it also includes a boss 334, which is connected to the two contacts at the second end of each of the stationary contact pieces 332.

[0055] It should be noted that the boss 334 can be silver-plated and press-fitted onto the contact to ensure good connection at the contact and avoid poor contact.

[0056] This application also provides a converter valve 40, including a converter valve tower 410, a capacitor 420, a rotating assembly 430, and an operating mechanism 440. The converter valve tower 410 includes multiple vertically spaced installation spaces, each of which is connected to the capacitor 420. The operating mechanism 440 is located on one side of the converter valve tower 410. Multiple rotating assemblies 430 are connected coaxially along a vertical axis, with one rotating assembly 430 corresponding to one side of each installation space. Each rotating assembly 430 includes a support tube 431, a rotating arm 432, and a transmission rod 433. The support tube 431 is located at the bottom layer. 1. Connected to the drive end of the operating mechanism 440, the rotating arm 432 is connected to the support tube 431, one end of the transmission rod 433 is connected to the rotating arm 432, and also includes a plurality of short-circuit discharge devices for the converter valve 40 capacitor 420 as described above. Each layer of the installation space is correspondingly provided with one of the short-circuit discharge devices for the converter valve 40 capacitor 420. The mounting mechanism 10 of the short-circuit discharge device for the converter valve 40 capacitor 420 is connected to the capacitor 420, and one end of the moving contact insulating rod 310 of the short-circuit discharge device for the converter valve 40 capacitor 420 is connected to the other end of the transmission rod 433.

[0057] It should be noted that the converter valve tower 410 typically has multiple installation spaces, five in this application. Each installation space contains multiple capacitors 420 arranged longitudinally. Therefore, each capacitor 420 in each layer corresponds to a short-circuit discharge device. Each layer also has a corresponding rotating assembly 430 for driving the moving contact insulating rod 310 in the short-circuit discharge device to slide. Each rotating assembly 430 includes a support tube 431, a rotating arm 432, and a transmission rod 433. The bottom support tube 431 is directly connected to the drive end of the operating mechanism 440, while the support tubes 431 of each upper layer are also fixedly connected along the same axis. Thus, by operating... The rotation of the drive end of mechanism 440 can drive all the support tubes 431 to rotate. Each support tube 431 is equipped with a rotating arm 432, which rotates horizontally with the support tube 431. One end of the rotating arm 432 in each layer is connected to a transmission rod 433, and the other end of the transmission rod 433 is connected to one end of the moving contact insulating rod 310 in the corresponding layer. Thus, the rotation of the rotating arm 432 drives the moving contact insulating rod 310 to move through the transmission rod 433. The moving contact insulating rod 310 slides longitudinally under the guidance of the longitudinal guide rail 210, thereby realizing the back-and-forth movement of the stationary contact piece 332 between the insulating piece 342 and the conductive piece 341, realizing the switching between the disconnection and discharge states.

[0058] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A short-circuit discharge device for a converter valve capacitor, characterized in that, This includes an installation mechanism, a longitudinal guiding mechanism, and a short-circuit discharge mechanism; among which, The mounting mechanism is used to connect to the capacitor of the converter valve, and the longitudinal guide mechanism is connected to the mounting mechanism; The short-circuit discharge mechanism includes a moving contact insulating rod, a stationary contact insulating rod, multiple contact pieces spaced apart along the longitudinal direction, and multiple short-circuit units arranged sequentially along the longitudinal direction. Each contact piece includes a discharge resistor and two stationary contacts spaced apart along the longitudinal direction. Each short-circuit unit includes a conductive sheet and an insulating sheet connected side-by-side along the longitudinal direction to the moving contact insulating rod. The stationary contact insulating rod is connected to the mounting mechanism. One end of the moving contact insulating rod is used to connect to the transmission rod of the converter valve to be slidably connected to the longitudinal guide mechanism in the longitudinal direction. The stationary contact insulating rod and the moving contact insulating rod are spaced apart in the transverse direction. The first end of the stationary contact piece is connected to the stationary contact insulating rod, and the second end of the stationary contact piece abuts against the shorting unit. The first ends of the two stationary contact pieces in each contact piece unit are respectively connected to the positive and negative terminals of the capacitor. The discharge resistor is connected to the first end of the stationary contact piece connected to the positive terminal of the capacitor.

2. The short-circuit discharge device for a converter valve capacitor according to claim 1, characterized in that, The installation mechanism includes multiple installation groups spaced apart along the longitudinal direction. Each installation group includes two installation units arranged opposite each other along the longitudinal direction. Each installation unit includes a mounting base and a supporting static insulator. The mounting base is used to connect to the capacitor. The supporting static insulator is connected to the mounting base. The static contact insulating rod is connected to the top of the supporting static insulator.

3. The short-circuit discharge device for a converter valve capacitor according to claim 2, characterized in that, The longitudinal guiding mechanism includes a longitudinal guide rail, and each of the mounting groups is provided with a corresponding longitudinal guide rail. The two ends of the longitudinal guide rail are respectively connected to two adjacent mounting bases.

4. The short-circuit discharge device for a converter valve capacitor according to claim 3, characterized in that, The short-circuit discharge mechanism further includes sliding components, with one sliding component correspondingly disposed on each of the longitudinal guide rails; wherein... The sliding assembly includes a sliding block and a connecting stationary insulator. The sliding block is slidably connected to the longitudinal guide rail along the longitudinal direction. The connecting stationary insulator is connected to the sliding block. The moving contact insulating rod is connected to the top of the connecting stationary insulator.

5. The short-circuit discharge device for a converter valve capacitor according to claim 1, characterized in that, The first end of the stationary contact piece has a connecting protrusion protruding from the end away from the moving contact insulating rod, and the connecting protrusions of the two stationary contacts in each contact piece unit are respectively connected to the positive and negative terminals of the capacitor.

6. The short-circuit discharge device for a converter valve capacitor according to claim 1, characterized in that, Each of the stationary contact pieces has two contacts at its second end.

7. The short-circuit discharge device for a converter valve capacitor according to claim 6, characterized in that, The longitudinal length of each conductive sheet is greater than the longitudinal distance between the two contacts in each stationary contact sheet.

8. The short-circuit discharge device for a converter valve capacitor according to claim 7, characterized in that, It also includes a boss, which is connected to the two contacts at the second end of each of the stationary contact pieces.

9. A converter valve, comprising a converter valve tower, a capacitor, rotating components, and an operating mechanism, wherein the converter valve tower includes multiple vertically spaced mounting spaces, each mounting space being connected to the capacitor, the operating mechanism being disposed on one side of the converter valve tower, and multiple rotating components being sequentially connected coaxially along a vertical axis, with one rotating component corresponding to one side of each mounting space; wherein, Each of the rotating components includes a support tube, a rotating arm, and a transmission rod. The support tube at the bottom layer is connected to the drive end of the operating mechanism. The rotating arm is connected to the support tube. One end of the transmission rod is connected to the rotating arm. The component is characterized by further including multiple short-circuit discharge devices for converter valve capacitors as described in any one of claims 1-8. Each layer of the mounting space corresponds to one of the short-circuit discharge devices for converter valve capacitors. The mounting mechanism of the short-circuit discharge device for converter valve capacitors is connected to the capacitor. One end of the moving contact insulating rod of the short-circuit discharge device for converter valve capacitors is connected to the other end of the transmission rod.

10. The converter valve according to claim 9, characterized in that, The number of installation spaces is five.

Images