A thyristor rectifier device flushing device and cooling system

Abstract

The utility model provides a silicon controlled rectifier equipment flushing device and cooling system relates to silicon controlled rectifier equipment field. This silicon controlled rectifier equipment flushing device includes: liquid inlet pipeline has at least first main pipe section and shunt pipe row, be provided with liquid inlet total valve and monitoring component on first main pipe section, shunt pipe row with first port intercommunication of a plurality of silicon controlled rectifier cooling flow channel, and liquid return pipeline is connected with second port intercommunication of a plurality of silicon controlled rectifier cooling flow channel, be provided with liquid return total valve and blow-off pipe on liquid return pipeline, wherein, monitoring component can show the impurity content of fluid in liquid inlet pipeline, a plurality of shunt branch pipes of shunt pipe row all are provided with branch valve, be provided with blow-off valve on blow-off pipe, the utility model can show in time and fast processing the impurity in silicon controlled rectifier equipment cooling flow channel, avoid the cooling water circulation pipeline blockage and cause the heat dissipation efficiency and production stability to reduce.

Description

Technical Field

[0001] This utility model relates to the field of thyristor rectifier equipment, specifically a thyristor rectifier flushing device and cooling system. Background Technology

[0002] A silicon controlled rectifier (SCR), also known as a thyristor, is a power semiconductor device typically used in main circuits. It offers advantages such as small size, high efficiency, and long lifespan. In automatic control systems, it can serve as a high-power driver, enabling the control of high-power equipment with low-power controls. It is widely used in AC / DC motor speed control systems.

[0003] The thyristor (semiconductor resonator) in the electrolysis hydrogen production rectifier cabinet is a power electronic device used to convert alternating current (AC) to direct current (DC). Its basic principle is to utilize the thyristor's unidirectional conductivity and trigger control characteristics, adjusting the conduction time by controlling the gate signal, thereby achieving precise control of the output DC voltage and current. The thyristor rectifier is a semi-controlled rectifier that relies on the grid's zero-crossing turn-off. It controls the thyristor's conduction time by providing a trigger signal to the gate, thus achieving rectification and regulating the DC output. To reduce harmonics and improve rectification efficiency, electrolysis hydrogen production rectifier cabinets typically employ multi-pulse rectification technology, such as 12-pulse or 24-pulse rectification.

[0004] In existing technologies, the cooling circulating water for thyristors in electrolytic hydrogen production rectifier cabinets is usually demineralized water, which contains a lot of sludge. The thyristor rectifier is also prone to static electricity, causing the sludge in the cooling circulating water channel to be electrostatically attracted by the pipe wall. During the cooling water circulation process, the cooling circulating water channel is easily blocked, affecting the heat dissipation of the thyristor. When the temperature is high, the circulating water is prone to scaling, which weakens the heat dissipation capacity of the cooling water, damages the valuable thyristor, and causes the thyristor high temperature protection to trigger interlocking trip, affecting production stability. Utility Model Content

[0005] This invention addresses the problem in existing electrolytic hydrogen production rectifier cabinets where the circulating water for thyristor cooling contains numerous impurities, easily clogging the thyristor cooling water channels during circulation, affecting heat dissipation, and even damaging the thyristors, thus impacting normal production. It provides a thyristor rectifier flushing device and cooling system that helps users promptly detect and quickly remove impurities from the cooling channels of the thyristor rectifier, preventing blockages in the cooling water circulation pipes that reduce heat dissipation efficiency and production stability.

[0006] The technical solution adopted in this utility model is:

[0007] A thyristor rectifier flushing device, comprising:

[0008] The liquid inlet pipeline includes at least a first main pipe section and a branch pipe array; the first main pipe section is equipped with a main inlet valve and a monitoring component; the branch pipe array is connected to the first port of several thyristor cooling channels; and

[0009] The return liquid pipeline is connected to the second port of several of the aforementioned silicon controlled rectifier cooling channels; the return liquid pipeline is equipped with a main return liquid valve and a drain pipe.

[0010] The monitoring component can display the impurity content of the fluid in the inlet pipe; a branch valve is provided on each of the several branch pipes of the branch pipe; a drain valve is provided on the drain pipe; when one of the several branch valves is open and the others are closed, and the drain valve is open and the main return valve is closed, the impurities in the thyristor cooling channel can be discharged.

[0011] Furthermore, the monitoring component includes a transparent Y-type filter, which has at least a main filter pipe and a branch filter pipe; the main filter pipe is connected to the first main pipe section via a first flange and a second flange at both ends.

[0012] Furthermore, a filter cartridge is embedded inside the filter branch pipe, and one end of the filter cartridge is inserted into the filter main pipe, so that the fluid flowing in the filter main pipe will pass through the pipe wall of the filter cartridge.

[0013] Furthermore, a sealing cap is detachably provided on the outward-facing end of the filter branch pipe; the inward-facing end of the sealing cap abuts against the filter cartridge.

[0014] Furthermore, the monitoring component includes a transparent observation tube; the observation tube is connected to the first main pipe section via a third flange and a fourth flange at both ends.

[0015] Furthermore, the return pipeline has at least a manifold, on which a plurality of manifold branches are provided, and the manifold branches are connected to the second port of the thyristor cooling channel.

[0016] Furthermore, the branch pipe and the junction pipe are equipped with water nozzles, and the water nozzles are connected to the first or second port of the thyristor cooling channel via rubber hoses.

[0017] Furthermore, the rubber hose is fitted with hose clamps at both ends.

[0018] A cooling system for a silicon controlled rectifier (SCR) device, comprising:

[0019] The thyristor rectifier flushing device as described above; and

[0020] The thyristor cooling channel has at least a first port and a second port.

[0021] Furthermore, it also includes:

[0022] The DC bus cooling channel has at least a third port and a fourth port; the third port is connected to the branch pipe of the branch pipe bank; and the fourth port is connected to the return pipe.

[0023] The beneficial effects of this utility model are:

[0024] 1. The flushing device of this utility model flushes the thyristor cooling channel by installing branch valves on each branch pipe of the inlet pipeline and a drain pipe with a drain valve on the return pipeline. The branch valves, drain valves, inlet main valve and return main valve work together to flush the thyristor cooling channel. In addition, a monitoring component installed after the inlet main valve can be installed to observe the cooling water quality at any time. This makes it efficient and convenient for users to discover and deal with impurities in the cooling channel of the thyristor rectifier. It solves the problem in the prior art that the thyristor cooling circulating water in the electrolytic hydrogen production rectifier cabinet has a lot of impurities, which can easily block the thyristor cooling circulating water channel during circulation, affect the heat dissipation of the thyristor, and even damage the thyristor, affecting normal production.

[0025] 2. The cooling system of this utility model flushes the thyristor cooling channel by installing branch valves on each branch pipe of the inlet pipe and a drain pipe with a drain valve on the return pipe. The branch valves, drain valve, main inlet valve, and main return valve work together to flush the thyristor cooling channel. Furthermore, a monitoring component installed after the main inlet valve allows for real-time monitoring of the cooling water quality. This system enables users to efficiently and conveniently identify and address impurities in the thyristor rectifier cooling channel. It solves the problem in existing electrolytic hydrogen production rectifier cabinets where the circulating water for thyristor cooling contains many impurities, easily clogging the thyristor cooling channel during circulation, affecting thyristor heat dissipation, and even damaging the thyristor, thus impacting normal production. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the rinsing device according to Embodiment 1 of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the Y-type filter according to an embodiment of the present invention;

[0029] Figure 3This is a schematic diagram of the rinsing device according to Embodiment 2 of this utility model.

[0030] Attached reference numerals: 100-Inlet pipe, 110-First main pipe section, 120-Diverter pipe array, 122-Diverter branch pipe, 124-Branch valve, 130-Main inlet valve, 140-Y-type filter, 141-First flange, 142-Second flange, 143-Main filter pipe, 144-Filter branch pipe, 145-Filter cartridge, 146-Sealing cap, 150-Observation tube, 153-Third flange, 154-Fourth flange;

[0031] 200-Return pipeline, 210-Second main pipeline section, 220-Manifold, 222-Manifold branch, 230-Return main valve, 240-Drain pipe, 242-Drain valve;

[0032] 300 - Cooling channel for silicon controlled rectifier (SCR), 310 - First port, 320 - Second port;

[0033] 400 - DC bus cooling channel, 430 - third port, 440 - fourth port;

[0034] 500-Rubber hose. Detailed Implementation

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0037] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0038] Example 1

[0039] In existing technologies, the cooling circulating water for thyristors in electrolytic hydrogen production rectifier cabinets typically uses demineralized water. This circulating water contains a significant amount of sediment, which easily clogs the thyristor cooling circulating water channels during circulation, affecting the thyristor's heat dissipation. At higher temperatures, scale easily forms in the circulating water, weakening the cooling water's heat dissipation capacity, damaging the valuable thyristors, and causing the thyristor's high-temperature protection to trigger an interlock trip, impacting production stability. Currently, the sediment in the thyristor cooling circulating water can only be discharged after the rectifier cabinet is shut down by disassembling the rubber hose. The rubber hose and water nozzle are fixed and sealed with pipe clamps; frequent disassembly easily leads to leaks due to incomplete sealing. During the disassembly and drainage, because the circulating cooling water is pressurized, the inlet valve may not close tightly or may leak internally, often resulting in circulating cooling water spraying onto the thyristors and copper busbars, affecting the safety of electrical equipment.

[0040] To address the aforementioned problems in the prior art, this embodiment provides a thyristor rectifier flushing device. This device is installed on the thyristor rectifier equipment in the electrolytic hydrogen production rectifier cabinet to flush the cooling channels. This thyristor rectifier flushing device helps users promptly detect and quickly remove impurities within the cooling channels of the thyristor rectifier, preventing blockages in the cooling water circulation pipes that could reduce heat dissipation efficiency and production stability. Please refer to... Figures 1-2 The flushing device of the thyristor rectifier mainly includes: inlet pipe 100 and return pipe 200, etc.

[0041] In this embodiment, the electrolytic hydrogen production rectifier cabinet installed in the thyristor rectifier flushing device adopts a six-phase twelve-pulse rectification. Two thyristors of the same phase share one thyristor cooling channel 300, for a total of six thyristor cooling channels 300. The DC positive and negative copper busbars are provided with four DC busbar cooling channels 400, for a total of ten cooling channels (some channels are omitted in the figure). One end of each thyristor cooling channel 300 has a first port 310 for water inlet; the other end has a second port 320 for water outlet. One end of each DC busbar cooling channel 400 has a third port 430 for water inlet; the other end has a fourth port 440 for water outlet.

[0042] The inlet pipe 100 is used to supply circulating coolant into the thyristor cooling channel 300 and the DC busbar cooling channel 400. For example... Figure 1 , Figure 2As shown, the inlet pipe 100 mainly includes a first main pipe section 110 and a branch pipe array 120. The first main pipe section 110 is a DN40 stainless steel pipe, with one end connected to an external circulation pipe and the other end connected to the branch pipe array 120. The first main pipe section 110 is equipped with an inlet master valve 130 and a Y-type filter 140. The inlet master valve 130 controls the connection and disconnection of the inlet pipe 100. The Y-type filter 140 is used to filter out larger impurities in the circulating coolant. In this embodiment, the Y-type filter 140 is made of transparent material and can also serve as a monitoring component, allowing users to observe the flow of circulating coolant and the content of impurities within the inlet pipe 100 for timely flushing and cleaning. Meanwhile, the main body of the branch pipe 120 is a DN40 stainless steel pipe, and the branch pipe 120 is provided with ten branch pipes 122 for connecting the first port 310 of the thyristor cooling channel 300 and the third port 430 of the DC bus cooling channel 400; and each branch pipe 122 is provided with a branch valve 124.

[0043] The return coolant line 200 is used to guide the circulating coolant discharged from the thyristor cooling channel 300 and the DC busbar cooling channel 400 back to its original position. The return coolant line 200 mainly includes a manifold 220 and a second main pipe section 210. The main body of the manifold 220 is a DN40 stainless steel pipe, and it has ten branch pipes 222 for connecting the second port 320 of the thyristor cooling channel 300 and the fourth port 440 of the DC busbar cooling channel 400. Simultaneously, a drain pipe 240 is installed on the main body of the manifold 220, and a drain valve 242, a DN15 ball valve, is installed on the drain pipe 240 to discharge circulating coolant containing impurities. Furthermore, the second main pipe section 210 is a DN40 stainless steel pipe. One end of the second main pipe section 210 is connected to the main body of the manifold 220, and the other end is connected to the external circulation pipeline. The second main pipe section 210 is equipped with a return liquid main valve 230, which can control the connection and disconnection of the return liquid pipeline 200.

[0044] One specific working method of this embodiment is as follows:

[0045] During normal production operation, the main inlet valve 130, the main return valve 230, and the ten branch valves 124 on the branch pipe 122 are fully open, while the drain valve 242 on the drain pipe 240 is closed. During production, the condition of the slag in the thyristor cooling channel can be observed through the transparent Y-type filter 140. Based on the slag condition, the decision is made regarding when to stop the machine for sludge removal. When stopping for sludge removal, first, the thyristor rectifier equipment is shut down to eliminate static electricity within the thyristor cooling channel 300; then… Select a cooling channel, open the branch valve 124 on the corresponding branch pipe 122 of the cooling channel, and close the branch valve 124 on the corresponding branch pipe 122 of the other cooling channels; then, open the drain valve 242 of the drain pipe 240 and close the return main valve 230 to introduce liquid into the inlet pipe, so as to discharge the residue in the cooling channel and avoid disassembling the connection between the thyristor cooling channel and the inlet pipe 100 and the return pipe 200 one by one.

[0046] In this embodiment, the thyristor rectifier flushing device flushes the thyristor cooling channels by installing branch valves 124 on each branch pipe 122 of the branch pipe row 120 of the inlet pipe 100 and a drain pipe 240 with a drain valve 242 on the return pipe 200. The thyristor cooling channels are flushed by the coordinated operation of the branch valves 124, the drain valve 242, the main inlet valve 130, and the main return valve 230. Furthermore, a transparent Y-type filter 140 is installed as a monitoring component after the main inlet valve 130, allowing for continuous observation of the cooling water quality. This provides users with efficient and convenient means to detect and address impurities in the thyristor rectifier cooling channels, solving the problem in the prior art where the circulating water for thyristor cooling in electrolytic hydrogen production rectifier cabinets contains many impurities, easily clogging the thyristor cooling water channels during circulation, affecting thyristor heat dissipation, and even damaging the thyristor, thus impacting normal production.

[0047] Meanwhile, in this embodiment, a Y-type filter 140 is also provided to prevent impurities with larger particle sizes from entering the SCR cooling channel, thereby preventing serious blockage and damage to the inside of the SCR cooling channel.

[0048] Specifically, such as Figure 2As shown, in this embodiment, the main filter pipe 143 of the Y-type filter 140 is connected to the first main pipe section 110 of the liquid inlet pipe 100 via a first flange 141 and a second flange 142 at both ends. The Y-type filter 140 has a filter branch pipe 144 extending outward at an incline relative to the first main pipe section 110. A filter cartridge 145 is fitted inside the filter branch pipe 144. One end of the filter cartridge 145 has an oblique opening and is inserted into the main filter pipe 143 of the Y-type filter 140, abutting against the inner wall of the main filter pipe 143. This allows the circulating coolant flowing in the main filter pipe 143 to pass through the pipe wall of the filter cartridge 145, thereby filtering out larger impurities. Furthermore, under the scouring and pushing force of the circulating coolant, the larger impurities will move along the pipe wall of the filter cartridge 145 into the filter branch pipe 144 and concentrate at the outward-facing end of the filter branch pipe 144. Meanwhile, a sealing cover 146 can be detachably installed on the outward end of the filter branch pipe 144, and the inward end of the sealing cover 146 abuts against the filter cartridge 145; when a lot of impurities accumulate in the filter branch pipe 144 and cleaning is required, the sealing cover 146 can be opened and the filter cartridge 145 can be pulled out for cleaning.

[0049] Specifically, in this embodiment, each of the ten branch pipes 122 is equipped with a water nozzle at its other end. Six of the branch pipes 122 have water nozzles connected to the first port 310 of the thyristor cooling channel 300 via rubber hoses 500; the other four branch pipes 122 have water nozzles connected to the third port 430 of the DC bus cooling channel 400 via rubber hoses 500. Furthermore, each of the ten manifolds 222 is equipped with a water nozzle at its other end. Six of the manifolds 222 have water nozzles connected to the second port 320 of the thyristor cooling channel 300 via rubber hoses 500; the other four manifolds 222 have water nozzles connected to the fourth port 440 of the DC bus cooling channel 400 via rubber hoses 500. In this embodiment, each rubber hose 500 is fitted with a clamp at both ends for fixing and sealing.

[0050] Example 2

[0051] Based on the above embodiments, a second embodiment is provided below.

[0052] Please see Figure 3The flushing device for the thyristor rectifier in the second embodiment is largely the same as the components such as the inlet pipe 100 and return pipe 200 of the flushing device for the thyristor rectifier in the first embodiment. The main difference is that the Y-type filter 140 in the second embodiment is made of opaque metal material, and an observation tube 150 is provided on the first main pipe section 110 of the inlet pipe 100. The two ends of the observation tube 150 are connected to the first main pipe section 110 through a third flange 153 and a fourth flange 154. The observation tube 150 is made of transparent material. Compared with the first embodiment, the Y-type filter 140 of the second embodiment, which uses metal material, has higher strength. The Y-type filter 140 needs to be frequently disassembled and assembled during use, and the high-strength metal material helps to extend its service life. The observation tube 150 is set up separately as a monitoring component and does not need to be frequently disassembled and assembled, thus avoiding damage.

[0053] In this embodiment, the thyristor rectifier flushing device flushes the thyristor cooling channels by installing branch valves 124 on each branch pipe 122 of the branch pipe row 120 of the inlet pipe 100 and a drain pipe 240 with a drain valve 242 on the return pipe 200. The thyristor cooling channels are flushed by the coordinated operation of the branch valves 124, drain valve 242, main inlet valve 130, and main return valve 230. Furthermore, a transparent observation tube 150 is installed after the main inlet valve 130 as a monitoring component, allowing for continuous observation of the cooling water quality. This provides users with efficient and convenient means to detect and address impurities in the thyristor cooling channels, solving the problem in the prior art where the circulating water for thyristor cooling in electrolytic hydrogen production rectifier cabinets contains many impurities, easily clogging the thyristor cooling channels during circulation, affecting heat dissipation, and even damaging the thyristor, thus impacting normal production.

[0054] Example 3

[0055] Based on the above embodiments, a cooling system for a silicon controlled rectifier is further proposed, and a third embodiment is provided below.

[0056] Please see Figures 1-3The cooling system for the thyristor rectifier in the third embodiment includes the thyristor rectifier flushing device from the above embodiments, as well as the thyristor cooling channels 300 and DC bus cooling channels 400 of the electrolytic hydrogen production rectifier cabinet. In this embodiment, the electrolytic hydrogen production rectifier cabinet adopts a six-phase twelve-pulse rectification. Two thyristors of the same phase share one thyristor cooling channel 300, for a total of six thyristor cooling channels 300. The DC positive and negative copper busbars are provided with four DC bus cooling channels 400, for a total of ten cooling channels. The thyristor cooling channel 300 has a first port 310 for water inlet at one end and a second port 320 for water outlet at the other end. The DC bus cooling channel 400 has a third port 430 for water inlet at one end and a fourth port 440 for water outlet at the other end.

[0057] In this embodiment, the cooling system for the thyristor rectifier equipment uses branch valves 124 installed on each branch pipe 122 of the branch pipe bank 120 of the inlet pipe 100, and a drain pipe 240 with a drain valve 242 installed on the return pipe 200. The thyristor cooling channels are flushed by the coordinated operation of the branch valves 124, drain valve 242, main inlet valve 130, and main return valve 230. Furthermore, a monitoring component installed after the main inlet valve 130 allows for real-time monitoring of the cooling water quality. This system enables users to efficiently and conveniently identify and address impurities in the cooling channels of the thyristor rectifier equipment. It solves the problem in the prior art where the circulating water for thyristor cooling in electrolytic hydrogen production rectifier cabinets contains many impurities, easily clogging the thyristor cooling water channels during circulation, affecting heat dissipation, and even damaging the thyristor, thus impacting normal production.

[0058] In one or more other embodiments, only the thyristor cooling channel 300 may be provided to cool the thyristor rectifier.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flushing device for a silicon controlled rectifier (SCR) rectifier, characterized in that, Include: The liquid inlet pipeline (100) has at least a first main pipe section (110) and a branch pipe array (120); the first main pipe section (110) is provided with a main liquid inlet valve (130) and a monitoring component; the branch pipe array (120) is connected to the first port (310) of a plurality of thyristor cooling channels (300); and The return liquid pipeline (200) is connected to the second port (320) of several of the thyristor cooling channels (300); the return liquid pipeline (200) is provided with a return liquid master valve (230) and a drain pipe (240). The monitoring component can display the impurity content of the fluid in the inlet pipe (100); a branch valve (124) is provided on a number of branch pipes (122) of the branch pipe (120); a drain valve (242) is provided on the drain pipe (240); when one of the branch valves (124) is open and the others are closed, and the drain valve (242) is open and the return main valve (230) is closed, the impurities in the thyristor cooling channel (300) can be discharged.

2. The thyristor rectifier flushing device as described in claim 1, characterized in that, The monitoring component includes a transparent Y-type filter (140), which has at least a main filter pipe (143) and a filter branch pipe (144); the main filter pipe (143) is connected to the first main pipe section (110) via a first flange (141) and a second flange (142) at both ends.

3. The thyristor rectifier flushing device as described in claim 2, characterized in that, The filter branch pipe (144) is fitted with a filter cartridge (145), one end of which is inserted into the filter main pipe (143), so that the fluid flowing in the filter main pipe (143) will pass through the pipe wall of the filter cartridge (145).

4. The thyristor rectifier flushing device as described in claim 3, characterized in that, A sealing cap (146) is detachably provided on the outward end of the filter branch pipe (144); the inward end of the sealing cap (146) abuts against the filter cartridge (145).

5. The thyristor rectifier flushing device as described in claim 1, characterized in that, The monitoring component includes a transparent observation tube (150); the observation tube (150) is connected to the first main pipe section (110) via a third flange (153) and a fourth flange (154) at both ends.

6. The thyristor rectifier flushing device as described in claim 1, characterized in that, The return pipeline (200) has at least a manifold (220), and a plurality of manifold branches (222) are provided on the manifold (220). The manifold branches (222) are connected to the second port (320) of the thyristor cooling channel (300).

7. The thyristor rectifier flushing device as described in claim 6, characterized in that, The branch pipe (122) and the junction pipe (222) are equipped with water nozzles, and the water nozzles are connected to the first port (310) or the second port (320) of the thyristor cooling channel (300) via rubber hoses (500).

8. The thyristor rectifier flushing device as described in claim 7, characterized in that, The rubber hose (500) is fitted with hose clamps at both ends.

9. A cooling system for a silicon controlled rectifier (SCR) device, characterized in that, Include: The thyristor rectifier flushing device as described in any one of claims 1-8; and The thyristor cooling channel (300) has at least a first port (310) and a second port (320).

10. The cooling system for a thyristor rectifier as described in claim 9, characterized in that, Also includes: The DC bus cooling channel (400) has at least a third port (430) and a fourth port (440); the third port (430) is connected to the branch pipe (122) of the branch pipe bank (120); the fourth port (440) is connected to the return pipe (200).

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