CN110380623B - Valve stack structure of water-cooling static frequency converter - Google Patents
Valve stack structure of water-cooling static frequency converter Download PDFInfo
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- CN110380623B CN110380623B CN201910738295.5A CN201910738295A CN110380623B CN 110380623 B CN110380623 B CN 110380623B CN 201910738295 A CN201910738295 A CN 201910738295A CN 110380623 B CN110380623 B CN 110380623B
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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
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- 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
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- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
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Abstract
The invention relates to a valve stack structure of a water-cooling static frequency converter, which comprises a circuit connection loop, a water circulation loop and a valve stack press-mounting rack, wherein the circuit connection loop is formed by a plurality of valve stack groups, each valve stack group comprises a capacitor, a water resistor, a thyristor, a radiator and a thyristor control unit, the water circulation loop comprises a water inlet pipe and a water outlet pipe, the top of the valve stack press-mounting rack is provided with a capacitor and a water resistor, the bottom of the valve stack press-mounting rack is provided with a thyristor control unit, a thyristor is arranged between the capacitor and the thyristor control unit, the two sides of the thyristor are respectively provided with a radiator, one side of the valve stack press-mounting rack is provided with a water inlet pipe and a water outlet pipe, the radiator has the water swivel, and water resistance utensil water connector, the inlet tube is linked together with the water swivel that corresponds of every radiator simultaneously, and every radiator is linked together with the water connector of the water resistance that corresponds, and the connector of every water resistance all is linked together with the outlet pipe. The invention not only separates water and electricity, but also is more convenient to maintain and overhaul, and has high integration level and high safety.
Description
Technical Field
The invention relates to a thyristor valve stack structure, in particular to a valve stack structure of a water-cooling static frequency converter.
Background
Early rotary frequency converters employed control the voltage and frequency output by an alternator by adjusting the speed of a dc motor. With the rapid development of power electronics, rotary frequency converters are gradually replaced by stationary frequency converters.
The static frequency converter is a non-rotating motor type frequency converter with certain power, which is composed of semiconductor power element and DC reactor, and it is a power supply control device which utilizes the on-off action of semiconductor power element to convert the industrial frequency power supply into variable frequency. At present, the static frequency converter is mainly applied to the field of hydroelectric power generation, and in order to connect a generator motor to a grid, the static frequency converter can stably drag the generator motor from a static state to a rated rotating speed and can also stabilize the generator motor at a certain rotating speed. Therefore, the device is particularly suitable for being used as dragging equipment for starting the large pumped storage power station unit pumps with large capacity and large number under the working condition.
The static frequency converter consists of a transformer, a DC reactor, a rectifier and an inverter, wherein the rectifier and the inverter comprise a thyristor valve stack structure, the rectifier converts constant three-phase alternating voltage into variable direct voltage, and the inverter converts the direct voltage output by the rectifier into variable amplitude and variable frequency alternating voltage. Because the working environment of hydroelectric generation is wet, the influence on the service life of power equipment is large, and therefore components such as a thyristor, a water resistor and a capacitor need to be maintained and repaired frequently; second, the water circuit and the circuit connection circuit in the thyristor valve stack structure are arranged crosswise, so that the safety of the valve stack structure is low.
Disclosure of Invention
The purpose of the invention is: the valve stack structure of the water-cooling static frequency converter is high in integration level and high in safety.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a valve stack structure of static converter of water-cooling which innovation point lies in: comprises a circuit connection loop consisting of a plurality of valve stack groups, a water circulation loop and a valve stack press-mounting rack,
each valve stack group comprises a capacitor, a water resistor, a thyristor, a radiator and a thyristor control unit,
the water circulation loop comprises a water inlet pipe and a water outlet pipe,
the top of the valve stack press-fitting rack is provided with a capacitor and a water resistor of the valve stack group, the bottom of the valve stack press-fitting rack is provided with a thyristor control unit of the valve stack group, the valve stack press-fitting rack is provided with a thyristor of the valve stack group, the thyristor is positioned between the capacitor and the thyristor control unit, two sides of the thyristor are respectively provided with a radiator, each thyristor control unit of the valve stack group is respectively attached below one radiator,
one side of the valve stack press-mounting rack is provided with a water inlet pipe and a water outlet pipe, the radiators are provided with a first water connector and a second water connector, the water resistors are provided with a first water connector and a second water connector, the water inlet pipe is communicated with the second water connector of each radiator at the same time, the first water connector of each radiator is communicated with the second water connector of the corresponding water resistor, and the first water connector of each water resistor is communicated with the water outlet pipe,
the circuit connection loop of the valve stack group is arranged on the other side of the valve stack press-fitting rack, the thyristor is electrically connected with the trigger end of the thyristor control unit, the thyristor control unit is electrically connected with one end of the capacitor, the other end of the capacitor is electrically connected with the connecting end of the water resistor, and the water resistor is electrically connected with the corresponding connecting end of the thyristor control unit.
In the technical scheme, the valve stack press-fitting rack comprises a first valve stack press-fitting plate, a second valve stack press-fitting plate, an insulating pull rod, an insulating plate and a disc spring, wherein the first valve stack press-fitting plate is connected with the second valve stack press-fitting plate into a whole through the insulating pull rod, the two ends of the insulating plate are respectively arranged at the tops of the first valve stack press-fitting plate and the second valve stack press-fitting plate, each thyristor of the valve stack group is arranged between the first valve stack press-fitting plate and the second valve stack press-fitting plate, the disc spring is arranged at one side of the first valve stack press-fitting plate and has a gap with a radiator close to the first valve stack press-fitting plate, the capacitor and the water resistor are arranged on the insulating plate, and the water resistor is positioned at one side of the capacitor.
In the above technical scheme, the bottom of the radiator is provided with an installation plate, and the thyristor control unit is arranged on the installation plate of the radiator.
In the above technical scheme, be equipped with the water pipe backup pad on the lateral wall of first valve stack pressure equipment board and second valve stack pressure equipment board respectively, inlet tube and outlet pipe are arranged side by side between two water pipe backup pads, and the both ends of inlet tube and outlet pipe respectively with the water pipe backup pad fixed connection that corresponds, the first water swivel and the second water swivel of radiator all are located the below of outlet pipe, and the first water connector and the second water connector of water resistance all are located the top of inlet tube.
In the above technical scheme, the top of the first valve stack press-fitting plate and the top of the second valve stack press-fitting plate are respectively provided with an insulating plate connecting plate, and two ends of the insulating plate are respectively fixedly connected with the insulating plate connecting plates.
In the above technical scheme, a radiator positioning block is arranged on the inner side of the second valve stack press-fitting plate, and a gap is formed between the radiator positioning block and a radiator close to the second valve stack press-fitting plate.
In the technical scheme, a plurality of water inlet connecting pipes are arranged on the pipe body of the water inlet pipe, and the second water joint of each radiator is respectively communicated with the corresponding water inlet connecting pipe on the water inlet pipe; and the pipe body of the water outlet pipe is provided with a plurality of water outlet connecting pipes, and the first water connector of each water resistor is respectively communicated with the corresponding water outlet connecting pipe on the water outlet pipe.
In the technical scheme, the bottom of the first valve stack press-mounting plate and the bottom of the second valve stack press-mounting plate are respectively provided with a support plate.
In the technical scheme, the insulating plate is provided with the threading hole, the water resistor is electrically connected with the corresponding connecting end of the thyristor control unit through a wire, and the wire penetrates through the threading hole in the insulating plate.
The invention has the positive effects that: after the valve stack structure of the water-cooling static frequency converter is adopted, because the invention comprises a circuit connection loop, a water circulation loop and a valve stack press-mounting rack which are formed by a plurality of valve stack groups,
each valve stack group comprises a capacitor, a water resistor, a thyristor, a radiator and a thyristor control unit,
the water circulation loop comprises a water inlet pipe and a water outlet pipe,
the top of the valve stack press-fitting rack is provided with a capacitor and a water resistor of the valve stack group, the bottom of the valve stack press-fitting rack is provided with a thyristor control unit of the valve stack group, the valve stack press-fitting rack is provided with a thyristor of the valve stack group, the thyristor is positioned between the capacitor and the thyristor control unit, two sides of the thyristor are respectively provided with a radiator, each thyristor control unit of the valve stack group is respectively attached below one radiator,
one side of the valve stack press-mounting rack is provided with a water inlet pipe and a water outlet pipe, the radiators are provided with a first water connector and a second water connector, the water resistors are provided with a first water connector and a second water connector, the water inlet pipe is communicated with the second water connector of each radiator at the same time, the first water connector of each radiator is communicated with the second water connector of the corresponding water resistor, and the first water connector of each water resistor is communicated with the water outlet pipe,
the circuit connection loop of the valve stack group is arranged on the other side of the valve stack press-mounting rack, the thyristor is electrically connected with the trigger end of the thyristor control unit, the thyristor control unit is electrically connected with one end of the capacitor, the other end of the capacitor is electrically connected with the connecting end of the water resistor, and the water resistor is electrically connected with the corresponding connecting end of the thyristor control unit;
when the valve stack is used, the valve stack is arranged in a cabinet, on one hand, a capacitor, a thyristor and a thyristor control unit of the valve stack group are arranged on a valve stack press-mounting rack from top to bottom, a tiled structure in the prior art is replaced, all parts are completely free from shielding, and the overhaul and maintenance of components in the cabinet are more convenient.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is another schematic directional view of FIG. 2;
in the figure: 1-capacitor, 2-water resistor, 3-water inlet pipe, 4-water outlet pipe, 5-thyristor, 7-radiator, 8-thyristor control unit and 9-valve stack press-mounting machine frame.
Detailed Description
The invention is further illustrated, but not limited, by the following examples in connection with the accompanying drawings.
As shown in fig. 1, 2 and 3, the valve stack structure of the water-cooled static frequency converter comprises a circuit connection loop formed by a plurality of valve stack groups, a water circulation loop and a valve stack press-mounting rack 9,
each valve stack group comprises a capacitor 1, a water resistor 2, a thyristor 5, a radiator 7 and a thyristor control unit 8,
the water circulation loop comprises a water inlet pipe 3 and a water outlet pipe 4,
the top of the valve stack press-fitting rack 9 is provided with a capacitor 1 and a water resistor 2 of a valve stack group, the bottom of the valve stack press-fitting rack 9 is provided with a thyristor control unit 8 of the valve stack group, the valve stack press-fitting rack 9 is provided with a thyristor 5 of the valve stack group, the thyristor 5 is positioned between the capacitor 1 and the thyristor control unit 8, two sides of the thyristor 5 are respectively provided with a radiator 7, each thyristor control unit 8 of the valve stack group is respectively attached below one radiator 7,
one side of the valve stack press-fitting rack 9 is provided with a water inlet pipe 3 and a water outlet pipe 4, the radiators 7 are provided with a first water connector 71 and a second water connector 72, the water resistors 2 are provided with a first water connector 21 and a second water connector 22, the water inlet pipe 3 is communicated with the second water connector 72 of each radiator 7, the first water connector 71 of each radiator 7 is communicated with the second water connector 22 of the corresponding water resistor 2, the first water connector 21 of each water resistor 2 is communicated with the water outlet pipe 4,
the circuit connection loop of the valve stack group is arranged on the other side of the valve stack press-fitting rack 9, the thyristor 5 is electrically connected with the trigger end of the thyristor control unit 8, the thyristor control unit 8 is electrically connected with one end of the capacitor 1, the other end of the capacitor 1 is electrically connected with the connecting end of the water resistor 2, and the water resistor 2 is electrically connected with the corresponding connecting end of the thyristor control unit 8.
As shown in fig. 1 and 2, in order to make the structural layout of the present invention more reasonable, the valve stack press-fitting frame 9 includes a first valve stack press-fitting plate 91, a second valve stack press-fitting plate 92, an insulating pull rod 93, an insulating plate 94, and a disc spring 95, the first valve stack press-fitting plate 91 is connected to the second valve stack press-fitting plate 92 through the insulating pull rod 93, both ends of the insulating plate 94 are respectively disposed on the tops of the first valve stack press-fitting plate 91 and the second valve stack press-fitting plate 92, each thyristor 5 of the valve stack group is disposed between the first valve stack press-fitting plate 91 and the second valve stack press-fitting plate 92, the disc spring 95 is disposed on one side of the first valve stack press-fitting plate 91 and has a gap with the radiator 7 adjacent to the first valve stack press-fitting plate 91, the capacitor 1 and the water resistor 2 are disposed on the insulating plate 94, and the water resistor 2 is disposed on one side of the capacitor 1. And a connecting copper bar is arranged at the gap between the disc spring 95 and the adjacent radiator 7. In order to press the thyristor and the radiator between the two valve stack press-fitting plates, the thyristor and the radiator are pressed by the elastic force of the disc spring.
According to the invention, a certain electric gap is kept between adjacent capacitors 1 on the insulating plate 94, and certain electric gaps are kept between the capacitors 1, the water resistors 2 and the thyristors 5, so that a maintenance space is reserved, and the thyristors are convenient to maintain.
As shown in fig. 2, in order to facilitate the installation of the thyristor control unit, the bottom of the heat sink 7 is provided with an installation plate 73, and the thyristor control unit 8 is arranged on the installation plate 73 of the heat sink 7.
As shown in fig. 1, 2 and 3, in order to arrange a water loop conveniently, so that water and electricity are separated, water pipe support plates 96 are respectively arranged on the side walls of the first valve stack press-mounting plate 91 and the second valve stack press-mounting plate 92, the water inlet pipe 3 and the water outlet pipe 4 are arranged between the two water pipe support plates 96 side by side, two ends of the water inlet pipe 3 and the water outlet pipe 4 are respectively and fixedly connected with the corresponding water pipe support plates 96, the first water connector 71 and the second water connector 72 of the radiator 7 are both located below the water outlet pipe 4, and the first water connector 21 and the second water connector 22 of the water resistor 2 are both located above the water inlet pipe 3.
As shown in fig. 2, in order to fix the insulating plates, insulating plate connecting plates 97 are respectively disposed on the tops of the first valve stack press-mounting plate 91 and the second valve stack press-mounting plate 92, and both ends of the insulating plate 94 are respectively fixedly connected to the insulating plate connecting plates 97. The insulation board connecting plate 97 is a channel steel.
As shown in fig. 1, in order to facilitate positioning of the mounting positions of the thyristor and the radiator, a radiator positioning block 98 is provided on the inner side of the second valve stack press-fitting plate 92, and a gap is provided between the radiator positioning block 98 and the radiator 7 adjacent to the second valve stack press-fitting plate 92. And a connecting copper bar is arranged at the gap between the radiator positioning block 98 and the adjacent radiator 7.
In the invention, the middle parts of the first valve stack press-mounting plate 91 and the second valve stack press-mounting plate 92 are provided with one more radiator, the radiator and one radiator of the valve stack group are arranged with a gap, and a connecting copper bar is arranged in the gap between the one more radiator and the radiator of the valve stack group. To facilitate electrical connection with other components.
As shown in fig. 2, in order to conveniently communicate the water connectors of the plurality of radiators and the water connectors of the water resistors with the corresponding water inlet pipes and water outlet pipes, a plurality of water inlet connecting pipes 31 are arranged on the pipe body of the water inlet pipe 3, and the second water connector 72 of each radiator 7 is respectively communicated with the corresponding water inlet connecting pipe 31 on the water inlet pipe 3; the body of the water outlet pipe 4 is provided with a plurality of water outlet connecting pipes 41, and the first water connector 21 of each water resistor 2 is respectively communicated with the corresponding water outlet connecting pipe 41 on the water outlet pipe 4.
As shown in fig. 2, in order to make the whole mat of the present invention in an overhead state, which is not only convenient for supporting, but also convenient for heat dissipation, ventilation and preventing the damp environment from affecting the service life of the components, the bottom of the first valve stack press-mounting plate 91 and the bottom of the second valve stack press-mounting plate 92 are respectively provided with a supporting plate 99. The support plate 99 is a channel steel.
As shown in fig. 3, in order to facilitate the lead, a threading hole 941 is disposed on the insulating plate 94, the water resistor 2 is electrically connected to the corresponding connection end of the thyristor control unit 8 through a wire, and the wire passes through the threading hole 941 on the insulating plate 94.
The thyristor control unit 8 of the invention may be selected as CJ _ NR1653H or CJ _ NR1653D, but is not limited thereto, and other types of thyristor control units may be selected.
The valve stack group is arranged in a cabinet when in use, on one hand, a capacitor, a thyristor and a thyristor control unit of the valve stack group are arranged on a valve stack press-mounting rack from top to bottom, so that a tiled structure in the prior art is replaced, all parts are completely free from shielding, and the overhaul and maintenance of components in the cabinet are more convenient.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a valve stack structure of static converter of water-cooling which characterized in that: comprises a circuit connection loop consisting of a plurality of valve stack groups, a water circulation loop and a valve stack press-mounting rack (9),
each valve stack group comprises a capacitor (1), a water resistor (2), a thyristor (5), a radiator (7) and a thyristor control unit (8),
the water circulation loop comprises a water inlet pipe (3) and a water outlet pipe (4),
the top of the valve stack press-fitting rack (9) is provided with a capacitor (1) and a water resistor (2) of the valve stack group, the bottom of the valve stack press-fitting rack (9) is provided with a thyristor control unit (8) of the valve stack group, the valve stack press-fitting rack (9) is provided with a thyristor (5) of the valve stack group, the thyristor (5) is positioned between the capacitor (1) and the thyristor control unit (8), two sides of the thyristor (5) are respectively provided with a radiator (7), each thyristor control unit (8) of the valve stack group is respectively attached below one radiator (7),
one side of the valve stack press-fitting rack (9) is provided with a water inlet pipe (3) and a water outlet pipe (4), the radiator (7) is provided with a first water connector (71) and a second water connector (72), the water resistor (2) is provided with a first water connector (21) and a second water connector (22), the water inlet pipe (3) is communicated with the second water connector (72) of each radiator (7), the first water connector (71) of each radiator (7) is communicated with the second water connector (22) of the corresponding water resistor (2), the first water connector (21) of each water resistor (2) is communicated with the water outlet pipe (4),
the circuit connection loop of the valve stack group is arranged on the other side of the valve stack press-mounting rack (9), the thyristor (5) is electrically connected with the trigger end of the thyristor control unit (8), the thyristor control unit (8) is electrically connected with one end of the capacitor (1), the other end of the capacitor (1) is electrically connected with the connecting end of the water resistor (2), and the water resistor (2) is electrically connected with the corresponding connecting end of the thyristor control unit (8);
the valve stack press-mounting rack (9) comprises a first valve stack press-mounting plate (91), a second valve stack press-mounting plate (92), an insulating pull rod (93), an insulating plate (94) and a disc spring (95), the first valve stack press-mounting plate (91) is connected with the second valve stack press-mounting plate (92) into a whole through an insulating pull rod (93), the two ends of the insulating plate (94) are respectively arranged at the tops of the first valve stack press-mounting plate (91) and the second valve stack press-mounting plate (92), each thyristor (5) of the valve stack being arranged between a first valve stack plate (91) and a second valve stack plate (92), the disc spring (95) is arranged on one side of the first valve stack press-mounting plate (91) and has a gap with the radiator (7) close to the first valve stack press-mounting plate (91), the capacitor (1) and the water resistor (2) are both arranged on the insulating plate (94), and the water resistor (2) is positioned on one side of the capacitor (1);
be equipped with water pipe backup pad (96) on the lateral wall of first valve stack pressure equipment board (91) and second valve stack pressure equipment board (92) respectively, inlet tube (3) and outlet pipe (4) are arranged side by side between two water pipe backup pads (96), and the both ends of inlet tube (3) and outlet pipe (4) respectively with water pipe backup pad (96) fixed connection that corresponds, first water swivel (71) and second water swivel (72) of radiator (7) all are located the below of outlet pipe (4), and first water swivel (21) and second water swivel (22) of water resistance (2) all are located the top of inlet tube (3).
2. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: the bottom of radiator (7) is equipped with mounting panel (73), thyristor control unit (8) are established on mounting panel (73) of radiator (7).
3. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: and the tops of the first valve stack press-mounting plate (91) and the second valve stack press-mounting plate (92) are respectively provided with an insulating plate connecting plate (97), and two ends of the insulating plate (94) are respectively fixedly connected with the insulating plate connecting plates (97).
4. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: and a radiator positioning block (98) is arranged on the inner side of the second valve stack press-mounting plate (92), and a gap is formed between the radiator positioning block (98) and the radiator (7) close to the second valve stack press-mounting plate (92).
5. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: a plurality of water inlet connecting pipes (31) are arranged on the pipe body of the water inlet pipe (3), and the second water joint (72) of each radiator (7) is respectively communicated with the corresponding water inlet connecting pipe (31) on the water inlet pipe (3); the water outlet pipe is characterized in that a plurality of water outlet connecting pipes (41) are arranged on the pipe body of the water outlet pipe (4), and the first water connectors (21) of the water resistors (2) are respectively communicated with the corresponding water outlet connecting pipes (41) on the water outlet pipe (4).
6. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: and the bottoms of the first valve stack press-mounting plate (91) and the second valve stack press-mounting plate (92) are respectively provided with a supporting plate (99).
7. The valve stack structure of the water-cooled stationary frequency converter according to claim 1, characterized in that: be equipped with through wires hole (941) on insulation board (94), water resistance (2) are connected through wire and the corresponding link electricity of thyristor control unit (8), and this wire passes through wires hole (941) on insulation board (94).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738295.5A CN110380623B (en) | 2019-08-12 | 2019-08-12 | Valve stack structure of water-cooling static frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738295.5A CN110380623B (en) | 2019-08-12 | 2019-08-12 | Valve stack structure of water-cooling static frequency converter |
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| Publication Number | Publication Date |
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| CN110380623A CN110380623A (en) | 2019-10-25 |
| CN110380623B true CN110380623B (en) | 2021-09-28 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS55129462U (en) * | 1979-03-08 | 1980-09-12 | ||
| CN102064676B (en) * | 2010-12-30 | 2012-11-28 | 冶金自动化研究设计院 | Integrated gate commutated thyristor (IGCT) three-level power module |
| CN104241226B (en) * | 2014-08-15 | 2018-05-15 | 常州博瑞电力自动化设备有限公司 | New high-pressure thyristor valve module |
| CN104917499B (en) * | 2015-06-24 | 2019-02-05 | 国家电网公司 | A kind of 110kV grade thyristor valve body |
| CN108809119A (en) * | 2018-08-23 | 2018-11-13 | 上海旭禾汽车电子科技有限公司 | A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT |
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