WO2021031730A1 - 换流阀阀层及换流阀 - Google Patents

换流阀阀层及换流阀 Download PDF

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Publication number
WO2021031730A1
WO2021031730A1 PCT/CN2020/100719 CN2020100719W WO2021031730A1 WO 2021031730 A1 WO2021031730 A1 WO 2021031730A1 CN 2020100719 W CN2020100719 W CN 2020100719W WO 2021031730 A1 WO2021031730 A1 WO 2021031730A1
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WO
WIPO (PCT)
Prior art keywords
valve
water
pipe
converter
converter valve
Prior art date
Application number
PCT/CN2020/100719
Other languages
English (en)
French (fr)
Inventor
刘磊
谢鸟龙
张翔
周晨
陈赤汉
郑力
李钊
Original Assignee
南京南瑞继保工程技术有限公司
南京南瑞继保电气有限公司
常州博瑞电力自动化设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 南京南瑞继保工程技术有限公司, 南京南瑞继保电气有限公司, 常州博瑞电力自动化设备有限公司 filed Critical 南京南瑞继保工程技术有限公司
Priority to BR112022002807A priority Critical patent/BR112022002807B8/pt
Priority to KR1020227008660A priority patent/KR102588197B1/ko
Publication of WO2021031730A1 publication Critical patent/WO2021031730A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change

Definitions

  • the invention relates to the technical field of power electronics and power systems, in particular to a converter valve valve layer of a converter valve.
  • the converter valve is a key device for high-voltage direct current transmission.
  • many power electronic devices are usually connected in series.
  • the converter valve is generally composed of multiple valve modules in series, and each valve module is composed of multiple power electronic devices connected in series.
  • the multiple power electronic devices connected in series are generally called silicon stacks.
  • a saturable reactor is generally connected in series in the valve module.
  • An embodiment of the present application provides a converter valve valve layer, which includes: a first valve module; a second valve module arranged side by side with the first valve module; and an electrical connector that electrically connects the valve in series in a diagonal manner.
  • the first valve module and the second valve module are configured to provide a converter valve valve layer.
  • Another embodiment of the present application also provides a converter valve, including any of the foregoing converter valve valve layers.
  • Figure 1 shows a schematic diagram of the connection between valve modules in the valve layer of a converter valve in the prior art.
  • Fig. 2A shows a schematic diagram of the connection between valve modules in a valve layer of a converter valve according to an embodiment of the present application.
  • Fig. 2B shows a schematic structural diagram of the valve layer of the converter valve shown in Fig. 2A.
  • Fig. 3 shows a schematic diagram of the cooling system topology of each valve module in the converter valve layer according to another embodiment of the present application.
  • Fig. 4 shows a schematic diagram of the cooling system topology of each valve module in the valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 5A shows a schematic top view of a cooling system in a valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 5B shows a schematic front view of the structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • Fig. 5C shows a schematic diagram of the water inlet pipe structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • Fig. 5D shows a schematic diagram of the water outlet pipe structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • Fig. 6A shows a schematic diagram of related circuits of each power electronic device in the valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 6B shows a schematic diagram of the power electronic unit structure according to the valve layer of the converter valve shown in Fig. 6A.
  • Fig. 6C shows a schematic diagram of the capacitor unit structure according to the valve layer of the converter valve shown in Fig. 6A.
  • Fig. 7A shows a partial structural diagram of a valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 7B shows a schematic structural diagram of a heat dissipation block according to the valve layer of the converter valve shown in Fig. 7A.
  • Fig. 7C shows a schematic diagram of the connection between the insulating pull plate of the valve layer of the converter valve and the supporting frame shown in Fig. 7A.
  • Fig. 8 shows a schematic structural view of a supporting frame of each valve module of a valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 1 is a schematic diagram of the connection between valve modules in the valve layer of a converter valve in the prior art.
  • the converter valve valve layer 1000 includes: a valve module 111, a valve module 112 and an electrical connector 12. among them:
  • valve module 111 and the valve module 112 are arranged side by side in the same layer, and are connected in series by the electrical connector 12.
  • the electrical connector 12 is electrically connected to the same direction ends 1112 and 1122 of the valve module 111 and the valve module 112, and the valve module 111, the valve module 112 and the electrical connector 12 are U-shaped.
  • the arrow direction is the current direction.
  • the inventor of the present application found that for the converter valve valve layers connected by U, the voltage difference between the valve modules contained in each converter valve valve layer is relatively large. As a result, the safety distance between the valve modules is relatively large, which in turn leads to a relatively large volume of the valve layer of the converter valve, and a relatively large volume of the converter valve using the valve layer of the converter valve.
  • the specific analysis is as follows:
  • the electrical characteristics, working mode, and working state of the valve module 111 and the valve module 112 are the same. Assuming that the maximum value of the voltage at both ends of the valve module 111 is U when the valve module 111 is operating; then, when the valve module 112 is operating, the maximum value of the voltage at both ends is also U. Due to the conductive connection, the terminal 1112 of the valve module 111 and the terminal 1122 of the valve module 112 are equipotential, and the voltage difference between the terminal 1111 of the valve module 111 and the terminal 1121 of the valve module 112 is 2U. Assuming that the safety distance corresponding to the voltage U is d, the distance between the valve module 111 and the valve module 112 needs to be at least 2d to meet the requirement of the converter valve valve layer for operational safety.
  • the cooling systems of the converter valves in the valve layer of the mainstream converter valves all use serial water circuits.
  • the inventor of the present application also found that when there are a lot of power and electrical devices in the valve layer of the converter valve, in order to meet the heat dissipation requirements of the series water circuit, the flow rate of the water circuit needs to be relatively large, resulting in a relatively large volume of the valve layer of the converter valve. Big.
  • the inventor of the present application also found that the length, width and height of the valve hall of the modified DC project have been fixed, and it is usually necessary to install a newly manufactured converter valve in the existing space. Therefore, the newly manufactured converter valve must be compact enough and highly versatile. Can adapt to various engineering sites.
  • Existing converter valves are mainly developed for the characteristics of high voltage level and large transmission capacity of UHV DC projects. They are large in size and cannot meet the transformation needs of the project.
  • the present application proposes a technical solution for a converter valve, which includes: a first valve module; a second valve module arranged side by side with the first valve module; and an electrical connector that electrically connects the first valve module in series in a diagonal manner.
  • a valve module and the second valve module are included in the present application.
  • the electrical connection is established at the diagonal ends of the adjacent valve modules through the electrical connector, which can equalize the voltage difference at each point in the two adjacent valve modules, thereby reducing the electrical connection between the adjacent valve modules. Voltage difference. Furthermore, a smaller valve module spacing can be used to meet the safety distance requirements of the valve layer of the converter valve, so that the volume of the valve layer of the above-mentioned converter valve can be relatively small, and can make the converter valve adopting the valve layer of the converter valve The volume can be smaller.
  • Fig. 2A shows a schematic diagram of the connection between valve modules in the valve layer of a converter valve according to an embodiment of the present application.
  • the converter valve valve layer 2000 includes: a valve module 211, a valve module 212 and an electrical connector 22. among them:
  • valve module 211 and the valve module 212 are arranged side by side in the same layer, and are connected in series by the electrical connector 22.
  • the electrical connector 22 is electrically connected to the diagonal ends 2112 and 2121 of the valve module 211 and the valve module 212, and the valve module 211, the valve module 212 and the electrical connector 22 are Z-shaped.
  • the arrow direction is the current direction.
  • the electrical characteristics, working modes, and working states of the valve module 211 and the valve module 212 are the same. It is assumed that the maximum value of the voltage across the valve module 211 is U when the valve module 211 is running; the maximum value of the voltage across the valve module 212 is also U when the valve module 212 is running. Due to the conductive connection, the terminal 2112 and the terminal 2121 are equipotential. Therefore, the voltage difference between the terminal 2111 and the terminal 2121 is U, and the voltage difference between the terminal 2112 and the terminal 2122 is also less than 2U.
  • the distance between the valve module 211 and the valve module 212 in the converter valve layer 2000 may be less than 2d.
  • the end 2112 may include point A, point B, or any point between point A and point B. Further, the end 2112 may also include a point of the valve module 211 close to the line segment AB.
  • the electrical connector 22 can electrically connect the valve module 211 to point A on the end 2112, or electrically connect the valve module 211 to point B on the end 2112, or connect the valve module 211 to point B. Any point between the line segments AB on the end 2112. Further, the electrical connection member 22 may electrically connect the valve module 211 to the end 2112 at a point adjacent to the line segment AB.
  • the end 2121 may include a point C, may also include a point D, and may also include any point between the point C and the point D. Further, the end 2121 may also include a point of the valve module 212 close to the line segment CD.
  • the electrical connector 22 can electrically connect the valve module 212 to point C on the end 2121, or electrically connect the valve module 212 to point D on the 2121, or connect the valve module 212 to 2121. Any point on the line segment CD. Further, the electrical connector 22 can electrically connect the valve module 212 to a point of the 2121 adjacent to the line segment CD.
  • valve module 211 and the valve module 212 are arranged in parallel with each other.
  • At least one of the valve module 211 and the valve module 212 may include at least two terminals, which are a high-pressure end and a low-pressure end, respectively.
  • the high-voltage terminals can be provided at the terminals 2111 and 2121, and the low-voltage terminals can be provided at the terminals 2112 and 2122; similarly, optionally, the terminals 2111 and 2121 can be provided with low- and high-voltage terminals, while the terminals 2112 and 2121 can be provided with low- and high-voltage terminals. 2122 can be a high-voltage end.
  • the converter valve layer may include three or more valve modules arranged side by side. Further, at least a pair of adjacent valve modules among the three or more valve modules are connected in a diagonal manner through electrical connectors.
  • the electrical connector 22 may include a straight rod-shaped rigid part. Further, the electrical connector 22 may include a section of rigid conductor.
  • At least one end of the electrical connector 22 includes a flexible connection structure.
  • Fig. 2B shows a schematic diagram of the structure of the valve layer of the converter valve shown in Fig. 2A.
  • the converter valve valve layer 2000 may include: a valve module 211, a valve module 212 and an electrical connector 22. Among them, the valve module 211 and the valve module 212 are connected in series in a diagonal manner through the electrical connector 22.
  • the valve module 211 may include: a silicon stack 2113, a capacitor stack 2114, an inductor 21151, an inductor 21152, and a shielding case 21171-21175.
  • the silicon stack includes a plurality of power electronic devices (not shown) connected in series and auxiliary devices (not shown) of the power electronic devices.
  • the capacitor stack 2114 includes a plurality of capacitors (not shown).
  • valve module 212 the internal structure of the valve module 212 is the same as that of the valve 211, and will not be repeated.
  • the converter valve valve layer 2000 may further include: insulators 231 and 232 insulated and supported between the valve module 211 and the valve module 212.
  • Fig. 3 shows a schematic diagram of the cooling system topology of each valve module in the converter valve layer according to another embodiment of the present application.
  • the converter valve valve layer 3000 includes: a water inlet pipe 301 and a water outlet pipe 302, two water distribution pipes 311 and 312, and a first heating device (not shown) and a second heating device (not shown).
  • the direction of water flow can be as indicated by the arrow. among them:
  • the inlet pipe 301 is used to receive the fluid cold medium.
  • the water outlet pipe 302 is used to discharge the fluid cold medium after heat exchange.
  • the two ends of the water distribution pipes 311 and 312 are respectively connected with the water inlet pipe 301 and the water outlet pipe 302, and the water distribution pipes 311 and 312 are respectively adjacent to the first heating device and the second heating device and are in thermal contact.
  • the water diversion pipe 311 further includes: a water inlet subdivision water pipe 3111, a water outlet subdivision water pipe 3113, and a heat dissipation water pipe 3112. among them:
  • the inlet water subdivided water pipe 3111 is connected to the water inlet pipe 301 by a waterway.
  • the water outlet subdivided water pipe 3112 is connected to the water outlet pipe 302 by water.
  • the two ends of the radiating water pipe 3113 are respectively connected to the water inlet subdivision water pipe 3111 and the outlet subdivision water pipe 3113, and exchange heat with the first heating device.
  • the fluid cooling medium may include water and other fluid substances that can be used for heat exchange.
  • the converter valve layer 3000 may further include a heat dissipation block 3114, which is coated on the outer wall of the hot water pipe 3113 and is in thermal contact with the hot water pipe 3113.
  • the heat dissipation water pipe 3113 can exchange heat with the heating device through the heat dissipation block 3114.
  • the heat dissipation water pipe 3113 may also be in direct thermal contact with the first heating device.
  • the water distribution pipe 312 may have the same structure as the water distribution pipe 311, and will not be repeated.
  • the converter valve layer 3000 further includes a third water distribution pipe, ..., an Nth water distribution pipe, which is bridged between the water inlet pipe 301 and the water outlet pipe 302, and is structured with the water distribution pipe 311 Same, N is an integer greater than 2.
  • the structures of the aforementioned water distribution pipes may also be different.
  • the heating device may be a power electronic device, a reactor, or other heating components.
  • the heat dissipation water pipe 3112 is made of a material with good heat conduction.
  • the heat dissipation block 3114 is made of a material with good thermal conductivity. Further, the heat dissipation block 3114 may be a conductive metal product or an insulating non-metal product.
  • the heat dissipation water pipe 3113 and the heat dissipation block 3114 may have a unified structure.
  • a hole through which cooling water can pass through a certain heat dissipation material can be processed as a heat dissipation water pipe.
  • valve layer of the converter valve By using the valve layer of the converter valve, heat can be exchanged with the heating element in the valve module through a plurality of water distribution pipes connected in parallel waterways. Since each water distribution pipe only needs to dissipate a small number of heating devices, only a small water flow and a thinner water pipe can achieve the predetermined water cooling effect. At the same time, a thinner water pipe can ensure that the volume of the valve module can be made smaller.
  • Fig. 4 shows a schematic diagram of the cooling system topology of each valve module in the valve layer of a converter valve according to another embodiment of the present application.
  • the converter valve valve layer 4000 includes: an inlet pipe 401 and an outlet pipe 402, and two water distribution pipes 411 and 412. among them:
  • the water inlet pipe 401 and the water outlet pipe 402 are the same as the components of the same name in the converter valve layer 3000, and will not be repeated.
  • the water distribution pipe 411 includes: an inlet subdivision water pipe 4111, an outlet subdivision water pipe 4113, and heat dissipation water pipes 4112 and 4115 connected in series.
  • the direction of water flow can be as indicated by the arrow. among them:
  • the inlet subdivision water pipe 4111 is connected to the water inlet pipe 401 by a waterway.
  • the water outlet subdivision water pipe 4113 is connected to the water outlet pipe 402 by a waterway.
  • the radiating water pipes 4112 and 4115 are connected in series, and the radiating water pipe 4112 is also connected with the inlet subdivision water pipe 4111 by the waterway, and the radiating water pipe 4115 is also connected with the outlet subdivision water pipe 4113 by the waterway.
  • the converter valve layer 4000 may further include: a heat dissipation width 4114 and a heat dissipation block 4116.
  • the heat dissipation block 4114 is coated on the outer wall of the heat dissipation water pipe 4112, and the heat dissipation block 4116 is coated on the outer wall of the heat dissipation water pipe 4115.
  • the heat dissipation blocks 4114 and 4116 are respectively in thermal contact with different heating devices in the valve module.
  • the water distribution pipe 411 may further include a bridging water pipe 4117, and the water path is connected between the heat dissipation water pipe 4112 and the heat dissipation water pipe 4115.
  • the water distribution pipe 411 may also include three or more heat dissipation water pipes connected in series; and three or more heat dissipation blocks are respectively coated on the aforementioned three or more heat dissipation pipes. Water pipes are in thermal contact with different heating devices.
  • it may also include two or more bridging water pipes, and the water path is connected between the heat dissipation water pipes.
  • each heat dissipation block can be in thermal contact with one heating device, or can be in thermal contact with multiple heating devices.
  • each heat-generating device can be in thermal contact with one heat dissipation block or with multiple heat dissipation blocks.
  • the water distribution pipe 412 may include two heat dissipation water pipes connected in series.
  • the water distribution pipe 412 may also include only one heat dissipation water pipe, or may include three or more heat dissipation water pipes.
  • the number of heat dissipation water pipes included in the water distribution pipe 412 may be the same as or different from the number of heat dissipation water pipes included in the water distribution pipe 411.
  • the converter valve valve layer 4000 may also include three or more water distribution pipes.
  • Each water distribution pipe bridges between the water inlet pipe 401 and the water outlet pipe 402.
  • Each water distribution pipe includes one heat dissipation water pipe, two heat dissipation water pipes connected in series, or two or more heat dissipation water pipes connected in series.
  • the outer wall of each heat dissipation water pipe is covered by different heat dissipation blocks. Each heat dissipation block is in thermal contact with different heating devices.
  • each water distribution pipe may be the same or different.
  • a small number of radiating water pipes are connected in series with the water distribution pipe in the valve layer of the above-mentioned converter valve. It can take into account the advantages of smaller water flow and thinner water pipes brought by parallel waterways; and the advantages of simple topology brought by series waterways. Therefore, the volume of the aforementioned cooling system can be smaller, and the volume of the valve module to which the aforementioned cooling system is applied can be smaller. That is, the valve layer of the converter valve can be made smaller, and the volume of the converter valve that should be the valve layer of the converter valve can be made smaller.
  • Fig. 5A shows a schematic top view of a cooling system in a valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 5B shows a schematic front view of the structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • Fig. 5C shows a schematic diagram of the water inlet pipe structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • Fig. 5D shows a schematic diagram of the water outlet pipe structure of the cooling system in the valve layer of the converter valve shown in Fig. 5A.
  • the converter valve valve layer 5000 includes: an inlet pipe 501, an outlet pipe 502, and a water distribution pipe 511 and a water distribution pipe 512.
  • the arrow direction can be the water flow direction. among them:
  • the water inlet pipe 501 is used to receive the cold medium, and may include: a water inlet 503 and an end 5012 of the water inlet pipe.
  • the water outlet pipe 502 is used to discharge the cold medium after heat exchange, and may include a water outlet 5021 and a water outlet pipe end 5022.
  • the water distribution pipe 511 is bridged between the water inlet pipe 501 and the water outlet pipe 502.
  • the water distribution pipe 511 includes: an inlet subdivision water pipe 5111, a heat dissipation water pipe 5112, a bridging water pipe 5113, a heat dissipation water pipe 5114, and an outlet subdivision water pipe 5115.
  • the inlet water subdivision water pipe 5111, the heat dissipation water pipe 5112, the bridging water pipe 5113, the heat dissipation water pipe 5114, and the outlet water subdivision water pipe 5115 are connected in sequence by waterways.
  • the heat dissipation water pipes 5112 and 5114 respectively exchange heat with different heating devices.
  • the heating devices that are heat-exchanged with the heat dissipation water pipe 5112 and the heat dissipation water pipe 5114 are power electronic devices and auxiliary devices of the power electronic devices.
  • the water inlet subdivision water pipe 5111, the heat dissipation water pipe 5112, the bridging water pipe 5113, the heat dissipation water pipe 5114, and the outlet subdivision water pipe 5115 are optionally U-shaped pipes.
  • the water inlet pipe 501 may further include a plurality of water inlet nozzles 5013, which are respectively connected to a plurality of water distribution pipes.
  • the water outlet pipe 502 may further include a plurality of water outlet nozzles 5023 respectively connected to a plurality of water distribution pipes.
  • the water distribution pipe 512 is bridged between the water inlet pipe 501 and the water outlet pipe 502.
  • the water distribution pipe 512 includes: an inlet subdivision water pipe 5121, a heat dissipation water pipe 5122, and an outlet subdivision water pipe 5123. among them:
  • the inlet water subdivision water pipe 5121, the heat dissipation water pipe 5122, the outlet water subdivision water pipe 5123 are connected in sequence by waterways.
  • the heat dissipating block 5122 includes a heat dissipating block (not shown), the heat dissipating block is wrapped around the shell of the heating device and heat exchange with it.
  • the heating device is a reactor or other heating devices.
  • each of the heat dissipation blocks in the heat dissipation water pipe 5112, the heat dissipation water pipe 5114 may only be heat-exchanged with one heat-generating device, or may be heat-exchanged with multiple heat-generating devices. Further, the heat dissipation water pipe 5112, the heat dissipation water pipe 5114 can also be clamped on both sides of the same heating device and exchange heat with it.
  • the water distribution pipe 511 may include only one heat dissipation water pipe, or may include three or more heat dissipation water pipes connected in series.
  • the converter valve valve layer 5000 may include two or more other water distribution pipes similar to the water distribution pipe 511.
  • the converter valve valve layer 5000 may further include other water diversion pipes similar to the water diversion pipe 512.
  • the water inlet pipe 501 and the water outlet pipe 502 are arranged on the same side of the heat dissipation water pipe 5112, and the heat dissipation water pipe 5114.
  • the above multiple components with the same name may have exactly the same shape and structure, or may have different shapes and structures.
  • the water inlet pipe and the water outlet pipe in the converter valve layer 5000 are arranged on the same side of the heat sink, and part of the water inlet subdivision pipes, outlet subdivision pipes and/or heat dissipation water pipes are U-shaped pipes.
  • the operating space required for the maintenance of the cooling system can be reduced, thereby further reducing the volume of the cooling system and the volume of the valve module using the cooling system. That is, the volume of the valve layer of the converter valve can be reduced, and the volume of the converter valve to which the valve layer of the converter valve is applied can be reduced.
  • Fig. 6A shows a schematic diagram of related circuits of each power electronic device in the valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 6B shows a schematic diagram of the power electronic unit structure according to the valve layer of the converter valve shown in Fig. 6A.
  • Fig. 6C shows a schematic diagram of the capacitor unit structure according to the valve layer of the converter valve shown in Fig. 6A.
  • the converter valve layer 6000 includes: a power electronic device 601, a power electronic trigger 611, capacitors 621, 622 and 623, voltage equalizing resistors 631 and 632, damping resistors 641, 642, and an energy receiving resistor 643. among them:
  • the capacitors 621, 622, and 623 are connected in a star shape, and the capacitor 621 and the capacitor 622 are electrically connected to the two power terminals of the power electronic device 601 through the damping capacitors 641 and 642, and the capacitor 623 is connected to The power electronic trigger 611 is electrically connected.
  • the control end of the power electronic device 601 is connected to the power electronic trigger 611, one end of the voltage equalizing resistors 631 and 632 is connected to the power end of the power electronic device 601 after the series connection, and the other end is connected to the heat sink of the power electronic trigger 611.
  • the above-mentioned electronic devices can be integrated into a power electronic unit (FIG. 6B) and a capacitor unit (FIG. 6C), respectively.
  • Fig. 6A shows a schematic structural diagram of a power electronic unit, in which 601, 611, and 643 are the same as the components with the same number in Fig. 6A.
  • 63 is a combined component of resistors 631, 632, 641, and 642.
  • Fig. 7A shows a partial structural diagram of a valve layer of a converter valve according to another embodiment of the present application.
  • Fig. 7B shows a schematic structural diagram of a heat dissipation block according to the valve layer of the converter valve shown in Fig. 7A.
  • Fig. 7C shows a schematic diagram of the connection between the insulating pull plate of the valve layer of the converter valve and the supporting frame shown in Fig. 7A.
  • the valve layer of the converter valve may further include an insulating pull plate.
  • the insulating pulling plate may include an upper insulating pulling plate 701 and a lower insulating pulling plate 702. And a plurality of heat dissipation blocks 721 and a plurality of power electronic devices (not shown).
  • the power electronic device is fixed on the heat dissipation block 721 to form a heat dissipation block 731 to which the power electronic device is fixed.
  • the heat dissipation block 731 of the power electronic device is fixed. It is connected to the upper insulating pulling plate 701 and the lower insulating pulling plate 702.
  • a guide rail 7021 is provided on the lower insulating pull plate 702.
  • a guide rail matching portion 7211 is provided on the heat dissipation block to be connected to the guide rail 7021 in cooperation.
  • the guide rail 7021 can be a boss, a groove, or other forms of guide rails.
  • the upper insulating pulling plate 701 and the lower insulating pulling plate 702 are connected by terminal blocks 711 and 712.
  • the terminal blocks 711 and 712 are provided with holes 7111, and the upper insulating pull plate 701 and the lower insulating pull plate 702 can be connected to the support frame through the holes 7111 on the terminal blocks 711 and 712.
  • the upper insulating pull plate 701 and the lower insulating pull plate 702 may be fixedly connected to the supporting frame.
  • the upper insulating pull plate 701 and the lower insulating pull plate 702 may also be movably connected to the supporting frame.
  • the support frame 821 and the upper insulating pull plate 701 can be connected by screws 7112 and terminal blocks.
  • a gap 7113 is left between the screw 7112 and the frame 821.
  • the insulating pull plates 701 and 702 can use the gap 7113 to freely expand and contract. In this way, the stress caused by thermal expansion and contraction can be reduced.
  • Fig. 8 shows a schematic structural view of a supporting frame of each valve module of a valve layer of a converter valve according to another embodiment of the present application.
  • the support frame of each valve module of the converter valve layer 8000 includes a plurality of support beams (not shown) for supporting a cooling system 811, a plurality of power electronic devices 812, a plurality of capacitors 815, and Reactor 813 and 814.
  • the supporting frame includes curved beams 801 and 802 respectively disposed between the reactor 813 and the plurality of capacitors 815 and between the reactor 814 and the plurality of reactors 815.
  • the application also includes an embodiment of the converter valve, which is composed of any of the above-mentioned converter valve valve layers.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

本申请涉及一种换流阀阀层和换流阀。其中，换流阀阀层包括：第一阀模块；第二阀模块，与所述第一阀模块并排设置；电连接件，以对角方式串联电连接所述第一阀模块和所述第二阀模块。

Description

换流阀阀层及换流阀 技术领域
本发明涉及电力电子与电力系统技术领域，特别涉及一种换流阀的换流阀阀层。
背景技术
换流阀是高压直流输电的关键装置，为实现高电压的开通关断控制通常需要很多电力电子器件串联。换流阀一般由多个阀模块串联组成，每个阀模块由串联连接的多个电力电子器件组成，串联连接的多个电力电子器件一般称为硅堆。运行时，为了电力电子器件免受过电压与过电流损坏，阀模块中一般串联饱和电抗器。
随着换流阀的功率不断扩大，电流阀的体积日益增大，如何控制换流阀的体积成为一种难题。
发明内容
本申请的一个实施例提供了一种换流阀阀层，包括：第一阀模块；第二阀模块，与所述第一阀模块并排设置；电连接件，以对角方式串联电连接所述第一阀模块和所述第二阀模块。
本申请的另一个实施例还提供了一种换流阀，包括前述任意一种换流阀阀层。
利用上述换流阀阀层，通过电连接件在相邻的阀模块的对角端建立电连接，可以均衡该相邻的两个阀模块中各点的电压差，从而可以降低相邻的阀模块之间的电压差。进而可以利用更小的阀模块间距满足换流阀阀层对安全距离的要求，使得上述换流阀阀层的体积可以相对较小，以及可以使得应用该换流阀阀层的换流阀的体积可以更小。
附图说明
图1示出了现有技术中，换流阀阀层中阀模块之间的连接示意图。
图2A示出了根据本申请一实施例的换流阀阀层中的阀模块之间的连接示意图。
图2B示出了根据图2A所示的换流阀阀层的结构示意图。
图3示出了根据本申请另一实施例的换流阀阀层中每一阀模块的冷却系统拓扑结构示意图。
图4示出了根据本申请另一个实施例的换流阀阀层中每一阀模块的冷却系统拓扑示意图。
图5A示出了根据本申请另一实施例换流阀阀层中冷却系统的俯视结构示意图。
图5B示出了根据图5A所示的换流阀阀层中冷却系统的主视结构示意图。
图5C示出了根据图5A所示的换流阀阀层中冷却系统的进水管结构示意图。
图5D示出了根据图5A所示的换流阀阀层中冷却系统的出水管结构示意图。
图6A示出了根据本申请又一实施例换流阀阀层中每一电力电子器件的相关电路原理示意图。
图6B示出了根据图6A所示的换流阀阀层的电力电子单元结构示意图。
图6C示出了根据图6A所示的换流阀阀层的电容单元结构示意图。
图7A示出了根据本申请的另一实施例换流阀阀层的局部结构示意图。
图7B示出了根据图7A所示的换流阀阀层的散热块的结构示意图。
图7C示出了根据图7A所示的换流阀阀层的绝缘拉板与支撑框架的连接示意图。
图8示出了根据本申请另一实施例换流阀阀层的每个阀模块的支撑框架的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进 行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应当理解，本申请的权利要求、说明书及附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。本申请的说明书和权利要求书中使用的术语“包括”和“包含”指示所描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其它特征、整体、步骤、操作、元素、组件和/或其集合的存在或添加。
还应当理解，在此本申请说明书中所使用的术语仅仅是出于描述特定实施例的目的，而并不意在限定本申请。如在本申请说明书和权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。还应当进一步理解，在本申请说明书和权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
图1为现有技术中，换流阀阀层中阀模块之间的连接示意图。
如图1所示，换流阀阀层1000包括：阀模块111、阀模块112和电连接件12。其中：
阀模块111和阀模块112在同一层内并排设置，并通过电连接件12串联连接。
电连接件12电连接于阀模块111和阀模块112的同方向端1112和1122，阀模块111、阀模块112和电连接件12三者呈U形。箭头方向为电流方向。
本申请的发明人发现，对于U连接的换流阀阀层，每个换流阀阀层内部所包含的阀模块之间的电压差较大。因而造成阀模块的安全间距较大，进而导致了换流阀阀层的体积相对较大，以及应用该换流阀阀层的换流阀的体积相对较大。其具体分析如下：
假定阀模块111与阀模块112的电气特性、工作模式和工作状态相同。假定阀模块111运行时的，两端电压的最大值为U；则阀模块112运行时， 两端电压的最大值也为U。由于导电连接，阀模块111的端1112与阀模块112的端1122等电位，而阀模块111的端1111与阀模块112的端1121的电压差为2U。假定电压U对应的安全距离为d，那么阀模块111与阀模块112之间的距离至少需要2d，才能满足该换流阀阀层对于运行安全的需要。
目前，主流换流阀阀层中的换流阀的冷却系统均采用串行水路。本申请的发明人还发现，当换流阀阀层中的电力电器器件非常多时，串联水路为了满足散热需求，其水路的通流量需要相对较大，从而导致了换流阀阀层的体积较大。
此外目前世界范围内已建成近百个直流输电工程，除了中国国内工程主要集中在2000年以后外，其余工程有近40个运行时间已超过20年，换流阀设备老化明显，改造需求激增。
本申请的发明人还发现，改造直流工程阀厅长度、宽度和高度已经固定，通常需要在现有空间中安装新制造的换流阀，因此新制造的换流阀必须足够紧凑，通用性强才能够适应各种工程现场。现有换流阀主要针对特高压直流工程电压等级高、输送容量大等特点研制，体积较大，无法满足工程的改造需求。
因此，本申请提出一种换流阀的技术方案，包括：第一阀模块；第二阀模块，与所述第一阀模块并排设置；电连接件，以对角方式串联电连接所述第一阀模块和所述第二阀模块。
利用上述方案，通过电连接件在相邻的阀模块的对角端建立电连接，可以均衡该相邻的两个阀模块中各点的电压差，从而可以降低相邻的阀模块之间的电压差。进而可以利用更小的阀模块间距满足换流阀阀层对安全距离的要求，使得上述换流阀阀层的体积可以相对较小，以及可以使得应用该换流阀阀层的换流阀的体积可以更小。
以下结合附图，对本申请所提出的方案作出进一步详细的描述。
图2A示出根据本申请一实施例的换流阀阀层中的阀模块之间的连接示意图。
如图2A所示，换流阀阀层2000包括：阀模块211、阀模块212和电连接件22。其中：
阀模块211和阀模块212在同一层内并排设置，并通过电连接件22串 联连接。
电连接件22电连接于阀模块211和阀模块212的对角端2112和2121，阀模块211、阀模块212和电连接件22三者呈Z形。箭头方向为电流方向。
如图2A所示，假定阀模块211与阀模块212的电气特性、工作模式和工作状态相同。假定阀模块211运行时的，两端电压的最大值为U；则阀模块212运行时，两端电压的最大值也为U。由于导电连接，端2112和端2121等电位。所以端2111与端2121的电压差为U，且端2112与端2122的电压差也是U均小于2U。假定电压U对应的安全距离为d，那么换流阀阀层2000中的阀模块211和阀模块212的距离可以小于2d。从而可以有效的缩小换流阀阀层中的阀模块的间接，进而可以缩小换流阀阀层的体积，以及换流阀的体积。
如图2A所示，端2112可以包括点A，也可以包括点B，还可以包括点A与点B之间的任意一点。进一步地，端2112也可以包括阀模块211的靠近线段AB的点。
如图2A所示，相应地，电连接件22可以电连接阀模块211于端2112上的A点，也可以电连接阀模块211于端2112上的B点，还可以点连接阀模块211于端2112上的线段AB之间的任意一点。进一步的，电连接件22可以电连接阀模块211于端2112的，邻近于线段AB的一点。
如图2A所示，同理可知，可选地，端2121可以一包点C，也可以包括点D，还可以包括点C和点D之间的任意一点。进一步地，端2121也可以包括阀模块212的靠近线段CD的点。
如图2A所示，相应地，电连接件22可以电连接阀模块212于端2121上的C点，也可以电连接阀模块212于2121上的D点，还可以点连接阀模块212于2121上的线段CD的任意一点。进一步的，电连接件22可以电连接阀模块212于2121的邻近于线段CD的一点。
可选地，阀模块211与阀模块212相互平行设置。
可选地，阀模块211与阀模块212中的至少一个可以包括至少两个接线端，分别为高压端和低压端。
进一步地，端2111和端2121处可以设置高压端，而端2112和端2122处可以是设置低压端；同理可选地，端2111和端2121处可以设低高压端， 而端2112和端2122处可以是设置高压端。
可选地换流阀阀层可以包括三个或者三个以上阀模块并排设置。进一步的该三个或者三个以上阀模块中的至少一对相邻阀模块通过电连接件，以对角方式连接。可选地，电连接件22可以包括直杆状刚性部。进一步地，电连接件22可以包括一段刚性导体。
更进一步地，电连接件22的至少一端包括柔性连接结构。
图2B示出了，图2A所示的换流阀阀层的结构示意图。
如图2B所示，换流阀阀层2000可以包括：阀模块211、阀模块212以及电连接件22。其中，阀模块211、阀模块212通过电连接件22，以对角方式，串联连接。
阀模块211可以包括：硅堆2113、电容堆2114、电感器21151、电感器21152以及屏蔽罩21171-21175。其中，硅堆包括串联连接的多个电力电子器件(未示出)以及电力电子器件的附属器件(未示出)组成。电容堆2114包括多个电容器(未示出)。
可选地，阀模块212的内部结构与阀211相同，不做赘述。
可选地，换流阀阀层2000还可以包括：绝缘子231和232绝缘支持于阀模块211与阀模块212之间。
利用上述换流阀阀层，通过电连接件在相邻的阀模块的对角端建立电连接，可以均衡该相邻的两个阀模块中各点的电压差，从而可以降低相邻的阀模块之间的电压差。进而可以利用更小的阀模块间距满足换流阀阀层对安全距离的要求，使得上述换流阀阀层的体积可以相对较小，以及可以使得应用该换流阀阀层的换流阀的体积可以更小。
图3示出了根据本申请另一实施例的换流阀阀层中每一阀模块的冷却系统拓扑结构示意图。
如图3所示，换流阀阀层3000包括：进水管301和出水管302以及两个分水管311和312以及第一发热器件(未示出)和第二发热器件(未示出)。水流方向可以如箭头所示。其中：
进水管301用于接收流体冷媒介。出水管302用于排放经过热交换后的流体冷媒介。
分水管311和312的两端分别与进水管301和出水管302水路连接，并且分水管311和312分别邻近于第一发热器件和第二发热器件，并热接触。
如图3所示，进一步地，分水管311还包括：进水细分水管3111、出水细分水管3113、散热水管3112。其中：
进水细分水管3111，与进水管301水路连接。
出水细分水管3112，与出水管302水路连接。
散热水管3113，两端分别与进水细分水管3111和出水细分水管3113水路连接，并与第一发热器件热交换。
可选地，流体冷媒介可以包括水，以及其他可以用于热交换的流体物质。
可选地，换流阀阀层3000还可以包括散热块3114，包覆于热水管3113的外壁，并与热水管3113热接触。散热水管3113可以通过散热块3114与发热器件热交换。
可选地，散热水管3113也可以直接与第一发热器件热接触。
如图3所示，可选地，分水管312可以与分水管311的结构完全相同，不做赘述。
如图3所示，可选地，换流阀阀层3000还包括第3分水管、……、第N分水管，跨接于进水管301和出水管302之间，并与分水管311结构相同，N为大于2的整数。
可选地，上述分水管的结构也可以各不相同。
可选地，发热器件可以是电力电子器件，也可以是电抗器，或者是其他发热的部件。
如图3所示，可选地，散热水管3112由导热良好的材料制成。
可选地，散热块3114由导热良好的材料制成。进一步地，散热块3114可以是导电的金属制品，也可以是绝缘的非金属制品。
如图3所示，可选地散热水管3113和散热块3114可以是统一结构，比如，可以在某一散热材料上加工出一条可以通过冷却水的孔洞，作为散热水管。
利用上述换流阀阀层，可以通过并联水路连接的多个分水管与阀模块 中的发热器件进行热交换。由于每个分水管只需要对少量发热器件进行散热，所以只需要较小的水流，较细的水管即可实现预定的水冷效果。同时较细的水管可以保障阀模块的体积可以做的更小。
图4示出了根据本申请另一个实施例的换流阀阀层中每一阀模块的冷却系统拓扑示意图。
如图4所示，换流阀阀层4000包括：进水管401和出水管402以及两个分水管411和412。其中：
进水管401和出水管402与换流阀阀层3000中的同名部件相同，不做赘述。
如图4所示，分水管411包括：进水细分水管4111、出水细分水管4113、和串联连接的散热水管4112和4115。水流方向可以如箭头所示。其中：
进水细分水管4111与进水管401水路连接。
出水细分水管4113与出水管402水路连接。
散热水管4112和4115水路串联连接，散热水管4112还与进水细分水管4111水路连接，并与散热水管4115还与出水细分水管4113水路连接。
换流阀阀层4000还可以包括：散热宽4114和散热块4116。其中，散热块4114包覆于散热水管4112的外壁，散热块4116包覆于散热水管4115的外壁。散热块4114和4116分别与阀模块中的不同发热器件热接触。
如图4所示，可选地，分水管411还可以包括桥接水管4117，水路连接于散热水管4112和散热水管4115之间。
如图4所示，可选地，分水管411还可以包括串联连接的三个或者三个以上散热水管；以及三个或者三个以上的散热块分别包覆于前述三个或者三个以上散热水管，并分别与不同发热器件热接触。
进一步地，还可以包括两个或者两个以上桥接水管，水路连接于散热水管之间。
进一步地，每个散热块可以与一个发热器件热接触，也可以与多个发热器件热接触。同样地，每个发热器件可以与一个散热块热接触，也可以与多个散热块热接触。
如图4所示，可选地，分水管412可以包括串联连接的两个散热水管。 可选地，分水管412也可以只包括一个散热水管，也可以包括三个或者三个以上散热水管。分水管412所包含的散热水管的数量可以与分水管411所包含的散热水管的数量相同，也可以不同。
可选地，换流阀阀层4000也可以包括三个或者三个以上分水管。每个分水管跨接于进水管401和出水管402之间。每个分水管包括一个散热水管、串联连接的两个散热水管、或者串联连接的两个以上散热水管。每个散热水管的外壁被不同的散热块包覆。每个散热块分别与不同的发热器件热接触。
进一步地，每个分水管所包含的散热水管的数量可以都相同，也可以各不相同。
利用上述换流阀阀层，可以通过并联水路连接的多个分水管与阀模块中的发热器件进行热交换。由于每个分水管只需要对少量发热器件进行散热，所以只需要较小的水流，较细的水管即可实现预定的水冷效果。同时较细的水管可以保障阀模块的体积可以做的更小。
在上述换流阀阀层中的分水管串联了少量散热水管。可以兼顾并联水路带来的较小水流，较细水管的优点；和串联水路带来的拓扑结构简单的优点。因而，上述冷却系统的体积可以更小，应用上述冷却系统的阀模块的体积可以更小。即换流阀阀层可以做的更小，以及应该换流阀阀层的换流阀的体积可以做的更小。
图5A示出了根据本申请另一实施例换流阀阀层中冷却系统的俯视结构示意图。图5B示出了根据图5A所示的换流阀阀层中冷却系统的主视结构示意图。图5C示出了根据图5A所示的换流阀阀层中冷却系统的进水管结构示意图。图5D示出了根据图5A所示的换流阀阀层中冷却系统的出水管结构示意图。
如图5A和图5B所示，换流阀阀层5000包括：进水管501、出水管502、以及分水管511和分水管512。其中，箭头方向可以为水流方向。其中：
如图5A所示，进水管501用于接受冷媒介，可以包括：进水口503以及进水管端部5012。
如图5A和图5B所示，出水管502用于排放经过热交换后的冷媒介， 可以包括出水口5021和出水管端部5022。
如图5A和图5B所示，分水管511跨接于进水管501和出水管502之间。分水管511包括：进水细分水管5111、散热水管5112、桥接水管5113、散热水管5114、出水细分水管5115。
其中，进水细分水管5111、散热水管5112、桥接水管5113、散热水管5114和出水细分水管5115顺次水路连接。散热水管5112和5114分别与不同的发热器件热交换。
如图5A和图5B所示，可选地，与散热水管5112和散热水管5114热交换的发热器件为电力电子器件，以及电力电子器件的附属器件。
如图5A和图5B所示，可选地进水细分水管5111、散热水管5112、桥接水管5113、散热水管5114、出水细分水管5115为U型管。
如图5C所示，进水管501还可以包括多个进水水嘴5013，分别与多个分水管连接。同样地，如图5D所示，出水管502还可以包括多个出水水嘴5023分别与多个分水管连接。
如图5A和图5B所示，分水管512跨接于进水管501和出水管502之间。分水管512包括：进水细分水管5121、散热水管5122和出水细分水管5123。其中：
进水细分水管5121、散热水管5122、出水细分水管5123顺次水路连接。散热块5122包括散热块(未示出)，该散热块包覆于发热器件外壳，并与之热交换。可选地，该发热器件为电抗器，或者其他发热器件。
如图5A和图5B所示，可选地，散热水管5112、散热水管5114中的每个散热块可以只与一个发热器件热交换，也可以与多个发热器件热交换。进一步地，散热水管5112、散热水管5114还可以夹在同一个发热器件的两侧，并与之热交换。
如图5A和图5B所示，可选地，分水管511可以只包括一个散热水管，也可以包括串联连接的三个或者三个以上的散热水管。
如图5A和图5B所示，可选地，换流阀阀层5000可以包括两个或者两个以上类似于分水管511的其他分水管。
如图5A和图5B所示，可选地，换流阀阀层5000还可以包括类似于分水管512的其他分水管。
如图5A和图5B所示，可选地，进水管501和出水管502设置于散热水管5112、散热水管5114的同一侧。
以上多个同名组件(比如多个分水管、多个散热水管等)可以形状和结构完全相同，也可以形状和结构各不相同。
利用上述换流阀阀层，可以通过并联水路连接的多个分水管与阀模块中的发热器件进行热交换。由于每个分水管只需要对少量发热器件进行散热，所以只需要较小的水流，较细的水管即可实现预定的水冷效果。同时较细的水管可以保障阀模块的体积可以做的更小。
同时，由于换流阀阀层5000中的进水管和出水管设置于散热片的同一侧，且其中部分进水细分水管、出水细分水管和/或散热水管为U型管。通过上述两种措施，可以降低该冷却系统在维护时所需要的操作空间，进而进一步地缩小了冷却系统的体积，以及利用该冷却系统的阀模块的体积。即可以缩小该换流阀阀层的体积，以及可以缩小应用该换流阀阀层的换流阀的体积。
图6A示出了根据本申请又一实施例换流阀阀层中每一电力电子器件的相关电路原理示意图。图6B示出了根据图6A所示的换流阀阀层的电力电子单元结构示意图。图6C示出了根据图6A所示的换流阀阀层的电容单元结构示意图。
如图6A所示，换流阀阀层6000包括：电力电子器件601、电力电子触发器611、电容器621、622和623以及均压电阻631和632、阻尼电阻641、642和取能电阻643。其中：
如图5A所示，电容器621、622和623星形连接，且电容621和电容622分别通过阻尼电容641和642与电力电子器件601的两个功率端电连接，电容器623通过取能电阻643与电力电子触发器611电连接。电力电子器件601的控制端与电力电子触发器611连接，均压电阻631和632串联后一端与电力电子器件601的功率端连接，另一端与电力电子触发器611的散热片连接。
如图6B和图6C所示，可选地，可以把上述电子器件分别整合到电力电子单元(如图6B)和电容单元(如图6C)中。
图如6A所示为电力电子单元的结构示意图其中601、611、643与图6A中的同编号组件相同。63为电阻631、632、641、642的合并组件。
图7A示出了根据本申请的另一实施例换流阀阀层的局部结构示意图。图7B示出了根据图7A所示的换流阀阀层的散热块的结构示意图。图7C示出了根据图7A所示的换流阀阀层的绝缘拉板与支撑框架的连接示意图。
如图7A所示，换流阀阀层还可以包括绝缘拉板。其中，绝缘拉板可以包括上绝缘拉板701和下绝缘拉板702。以及多个散热块721和多个电力电子器件(未示出)。电力电子器件固定于散热块721上形成固定了电力电子器件的散热块731。固定了电力电子器件的散热块731。与上绝缘拉板701和下绝缘拉板702连接。
如图7A和图7B所示，可选地，下绝缘拉板702上设有导轨7021。相应地，散热块上设有导轨配合部7211与导轨7021配合连接。
可选地，导轨7021可以是一个凸台，也可以是一个凹槽，或者其他形式的导轨。
可选地，上绝缘拉板701和下绝缘拉板702通过端接块711和712连接。端接块711和712上设有孔7111，上绝缘拉板701和下绝缘拉板702可以通过端接块711和712上的孔7111与支撑框架连接。
可选地，上绝缘拉板701和下绝缘拉板702的可以与支撑框架固定连接。
如图7C所示，可选地上绝缘拉板701和下绝缘拉板702也可以与支撑框架可移动连接。具体地，可以通过螺钉7112和端接块连接支撑框架821和上绝缘拉板701。其中，螺钉7112与框架821之间留有空隙7113。绝缘拉板701和702可以利用空隙7113自由地做伸缩运动。以此可以消减由于热胀冷缩带来的应力。
图8示出了根据本申请另一实施例换流阀阀层的每个阀模块的支撑框架的结构示意图。
如图8所示，换流阀阀层8000的每个阀模块的支撑框架包括多个支撑横梁(未示出)，用于支持冷却系统811、多个电力电子器件812、多个电容器815以及电抗器813和814。
其中支撑框架中包括弯曲横梁801和802分别设置于电抗器813与多个电容器815之间以及电抗器814与多个电抗器815之间。通过上述措施可以减少阀模块的长度，进而可以缩小换流阀阀层的体积以及应用该换流阀阀层的换流阀的体积。
本申请还包括一个实施例换流阀，由上述任意一种换流阀阀层组成。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。上述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明仅用于帮助理解本申请的方法及其核心思想。同时，本领域技术人员依据本申请的思想，基于本申请的具体实施方式及应用范围上做出的改变或变形之处，都属于本申请保护的范围。综上所述，本说明书内容不应理解为对本申请的限制。

Claims (16)

  1. 一种换流阀阀层，包括：
    第一阀模块；
    第二阀模块，与所述第一阀模块并排设置；
    电连接件，以对角方式串联电连接所述第一阀模块和所述第二阀模块。
  2. 根据权利要求1所述的换流阀阀层，其中，所述第一阀模块和所述第二阀模块相互平行。
  3. 根据权利要求1所述的换流阀阀层，其中，所述电连接件包括直杆状刚性部。
  4. 根据权利要求1所述的换流阀阀层，其中，所述电连接件的两端中的至少一端具有柔性连接结构。
  5. 根据权利要求1所述的换流阀阀层，其中，所述第一阀模块和所述第二阀模块中的每个阀包括：
    发热器件，包括电力电子器件和电抗器；
    进水管，用于接收冷却水；
    出水管，用于排放经过热交换后的冷却水；
    多个分水管，每个所述分水管的两端分别与所述进水管和所述出水管水路连接，并且所述多个分水管分别相邻于多个不同发热器件设置，从而分别与所述发热器件进行热交换。
  6. 根据权利要求5所述的换流阀阀层，其中，每个所述分水管均包括：
    进水细分水管，与所述进水管水路连接；
    出水细分水管，与所述出水管水路连接；
    散热水管，两端分别与所述进水细分水管和所述出水细分水管水路连接。
  7. 根据权利要求5所述的换流阀阀层，其中，每个所述分水管均包括：
    进水细分水管，与所述进水管水路连接；
    出水细分水管，与所述出水管水路连接；
    串联连接的至少两个散热水管，串联连接的散热水管的两端分别与所述进水细分水管和所述出水细分水管水路连接。
  8. 根据权利要求7所述的换流阀阀层，其中，每个所述分水管还包括：
    桥接水管，水路连接于所述至少两个散热水管之间。
  9. 根据权利要求1所述的换流阀阀层，其中，所述至少两个阀模块中的每一个阀模块包括：
    至少两个散热块；
    至少两个电力电子器件，固定于所述至少两个散热块。
  10. 根据权利要求9所述的换流阀阀层，其中，所述至少两个阀模块中的每一个阀模块还包括：
    绝缘拉板，与所述至少两个散热块连接。
  11. 根据权利要求10所述的换流阀阀层，其中，所述绝缘拉板包括：
    上绝缘拉板，与所述至少两个散热块的上部连接；
    下绝缘拉板，与所述至少两个散热块的下部连接。
  12. 根据权利要求11所述的换流阀阀层，其中，所述下绝缘拉板包括导轨；
    所述散热块包括：
    导轨配合部，与所述导轨配合连接。
  13. 根据权利要求10所述的换流阀阀层，还包括：
    支撑框架，所述绝缘拉板两端与所述支持框架连接，且所述绝缘拉板 的至少一端与所述支撑框架可移动连接。
  14. 根据权利要求1所述的换流阀阀层，其中，所述第一阀模块和所述第二阀模块中的每一个阀模块还包括：
    电抗器和电容器；
    支撑框架，所述绝缘拉板、电抗器和电容器设置于所述支撑框架。
  15. 根据权利要求14所述的换流阀阀层，其中，所述支撑框架包括弯曲横梁，所述电抗器与所述电容器设置于所述弯曲横梁两侧。
  16. 一种换流阀，包括权利要求1-15中任意一项所述的换流阀阀层。
PCT/CN2020/100719 2019-08-16 2020-07-07 换流阀阀层及换流阀 WO2021031730A1 (zh)

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Free format text: 1) APRESENTAR, EM ATE 60 (SESSENTA) DIAS, NOVAS FOLHAS DE RELATORIO DESCRITIVO, REIVINDICACOES, RESUMO E DESENHOS ADAPTADAS A INSTRUCAO NORMATIVA 31/2013 UMA VEZ QUE O CONTEUDO ENVIADO NA PETICAO NO 870220013106 DE 14/02/2022 ENCONTRA-SE FORA DA NORMA.2) APRESENTAR, EM ATE 60 (SESSENTA) DIAS, A TRADUCAO SIMPLES DA FOLHA DE ROSTO DA CERTIDAO DE DEPOSITO DA PRIORIDADE CN 201910760007.6 DE 16/08/2019 DE 12/10/2019 OU DECLARACAO CONTENDO, OBRIGATORIAMENTE, TODOS OS DADOS IDENTIFICADORES DESTA CONFORME O ART. 15 DA PORTARIA 39/2021. A TRADUCAO APRESENTADA NAO POSSUI TODOS OS DADOS IDENTIFICADORES NECESSARIOS.

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