CN108417547B - Thyristor press-fitting structure - Google Patents
Thyristor press-fitting structure Download PDFInfo
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- CN108417547B CN108417547B CN201810346490.9A CN201810346490A CN108417547B CN 108417547 B CN108417547 B CN 108417547B CN 201810346490 A CN201810346490 A CN 201810346490A CN 108417547 B CN108417547 B CN 108417547B
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- thyristor
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- 238000013016 damping Methods 0.000 claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 claims abstract description 31
- 239000000110 cooling liquid Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000009413 insulation Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
- H01L23/4012—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws for stacked arrangements of a plurality of semiconductor devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/165—Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
- H01L2023/4018—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws characterised by the type of device to be heated or cooled
- H01L2023/4025—Base discrete devices, e.g. presspack, disc-type transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
- H01L2023/4075—Mechanical elements
- H01L2023/4087—Mounting accessories, interposers, clamping or screwing parts
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The embodiment of the invention provides a thyristor press-fitting structure, which comprises the following components: one side of the thyristor assembly is provided with a voltage equalizing resistor; the extending directions of the insulating pull rods are consistent with the extending directions of the thyristor components; the two ends of the insulating pull rods are respectively connected to the movable end plate and the fixed end plate, and the movable end plate, the fixed end plate and the insulating pull rods form a containing cavity for containing the thyristor assembly; the thyristor assembly comprises: a plurality of radiators arranged along the same linear array, and thyristors are arranged between two adjacent radiators; the radiator is provided with a damping resistor heat dissipation area for installing a damping resistor and a thyristor heat dissipation area corresponding to the thyristor; the cooling liquid flows into the thyristor heat dissipation area firstly and then flows into the damping resistor heat dissipation area to cool the thyristor and the damping resistor connected to the radiator, so that effective heat dissipation of the thyristor and the damping resistor can be ensured.
Description
Technical Field
The invention relates to the technical field of direct current transmission, in particular to a thyristor press-fitting structure.
Background
The thyristor and the damping resistor are core components of ultra-high voltage direct current transmission, and the heat dissipation performance of the thyristor and the damping resistor is one of key factors for reliable operation of the converter valve, so that the heat dissipation performance of the thyristor and the damping resistor is particularly important.
Currently, the existing thyristor press-mounting mechanisms mainly have 3 types, which are respectively: a drawstring structure, a drawplate structure and a draw rod structure. The pull belt adopts an annular structure, the structural strength of the pull belt is difficult to realize the requirement of the thyristor pressing force, so that a certain risk exists in engineering application, and the pull belt structure can block two surfaces of the radiator, so that the full utilization of the heat conducting surface of the radiator is not facilitated. The pull plate structure is fixed together with the end plate through the bolts, the bolt structure is unfavorable for the rapid installation of the structure, the area of the pull plate structure is large, two side surfaces of the radiator are blocked, and the utilization of the heat conducting surface of the radiator is also unfavorable.
At present, only the thyristor press-mounting mechanism with a pull belt structure shares a radiator with the damping resistor and the thyristor, but the common mode is that a rod resistor is inserted into the radiator for radiating, and the reliability of the radiating of the resistor is difficult to ensure.
Disclosure of Invention
Based on the analysis, the embodiment of the invention provides a thyristor press-mounting structure, which is used for solving the problem that the existing thyristor press-mounting structure cannot ensure effective heat dissipation of a thyristor and a damping resistor.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the embodiment of the invention provides a thyristor press-fitting structure, which comprises the following components: the thyristor assembly is provided with a voltage equalizing resistor at one side; the extending directions of the insulating pull rods are consistent with the extending directions of the thyristor assemblies; the two ends of the insulating pull rods are respectively connected to the movable end plate and the fixed end plate, and the movable end plate, the fixed end plate and the insulating pull rods form a containing cavity for containing the thyristor assembly; the thyristor assembly comprises: a plurality of radiators arranged along the same linear array, and thyristors are arranged between two adjacent radiators; the radiator is provided with a damping resistor heat dissipation area for installing a damping resistor and a thyristor heat dissipation area corresponding to the thyristor; the cooling flow passage is arranged inside the radiator, cooling liquid flows along the cooling flow passage, and the cooling liquid firstly flows into the thyristor heat dissipation area and then flows into the damping resistor heat dissipation area so as to cool the thyristor and the damping resistor connected to the radiator.
The radiator is different from the side wall of the thyristor, a liquid inlet and a liquid outlet are formed in the side wall of the thyristor, two adjacent radiators are connected in series to form a radiator group, cooling liquid flows in through the liquid inlet of one radiator, flows out of the liquid outlet after cooling the radiator and flows into the liquid inlet of the other radiator, and finally flows out of the liquid outlet of the radiator.
The thyristor press-fitting structure further comprises an insulating support beam, wherein the insulating support beam is arranged between the movable end plate and the fixed end plate and positioned at the bottom of the thyristor assembly, and the insulating support beam is used for supporting the thyristor assembly before press-fitting and after disassembling the thyristor press-fitting structure.
The insulation support beam is provided with a climbing increasing groove.
The two ends of the thyristor assembly are respectively connected with a first busbar and a second busbar, and current flows into the thyristor assembly through the first busbar and then flows out of the second busbar.
The position between the thyristor assembly and the movable end plate in the accommodating cavity is provided with a pressure assembly, and the pressure assembly is used for tightly attaching the first busbar to the thyristor assembly.
The first busbar is attached to the pressure assembly, and the second busbar is attached to the last radiator of the thyristor assembly, which is far away from the pressure assembly.
The movable end plate is provided with a mounting hole, and the pressure assembly comprises: an adapter mounted in the mounting hole of the movable end plate; a press-fit screw nested in the adapter; and the pressure piece is arranged between the press-fit screw and the first busbar and is used for providing elastic force for enabling the first busbar to press the thyristor assembly.
The pressure member includes: the conical washer is sleeved on the inner wall of the press-fit screw in a movable manner relative to the press-fit screw; the disc spring pressing piece is connected to the conical surface gasket in an interference mode, a disc spring is arranged between the disc spring pressing piece and the press-fit screw, and the disc spring is used for providing elastic force.
The conical surface gasket is provided with a centering hole, a spherical surface gasket is arranged between the centering hole and the first busbar, the spherical surface gasket is embedded into the centering hole, and the aligning spherical surface of the spherical surface gasket is in line contact with the aligning conical surface of the conical surface gasket.
The first busbar is provided with an alignment hole, one end of the spherical gasket, which is far away from the alignment hole, is provided with a boss, and the boss is inserted into the alignment hole so that the spherical gasket is stably connected to the first busbar.
The insulation pull rod is characterized in that the two ends of the insulation pull rod are provided with neck parts, steps with the outer diameters larger than those of the neck parts are arranged on the neck parts adjacently, one side of each step is provided with a bearing end, the movable end plate and the fixed end plate are provided with connecting holes with gaps, the neck parts enter the connecting holes through the gaps, external force acts on the movable end plate and the fixed end plate, the connecting holes move to the step, and the movable end plate and the fixed end plate are limited by the bearing ends to prevent falling.
Hanging rings are arranged on the upper parts of the movable end plate and the fixed end plate.
The technical scheme of the invention has the following advantages:
1. the thyristor press-fitting structure provided by the embodiment of the invention comprises: the thyristor assembly is provided with a voltage equalizing resistor at one side; the extending directions of the insulating pull rods are consistent with the extending directions of the thyristor assemblies; the two ends of the insulating pull rods are respectively connected to the movable end plate and the fixed end plate, and the movable end plate, the fixed end plate and the insulating pull rods form a containing cavity for containing the thyristor assembly; the thyristor assembly comprises: a plurality of radiators arranged side by side along the same straight line, and thyristors are arranged between two adjacent radiators; the radiator is provided with a damping resistor heat dissipation area for installing a damping resistor and a thyristor heat dissipation area corresponding to the thyristor; the cooling flow channel is arranged in the radiator, the cooling liquid flows along the cooling flow channel, firstly flows through the thyristor heat dissipation area, then flows through the damping resistor heat dissipation area, and takes away the heat transferred by the thyristor and the damping resistor, so that the thyristor and the damping resistor connected to the radiator are cooled. The heat dissipation mechanism provided by the invention adopts the design of sharing the radiator by the thyristor and the damping resistor, so that the space occupied by the damping resistor is saved, and the volume is reduced.
2. According to the thyristor press-fitting structure provided by the embodiment of the invention, the side wall of the radiator is provided with the liquid inlet and the liquid outlet, two adjacent radiators are connected in series to form the radiator group, the two radiators share one waterway, cooling liquid flows in through the liquid inlet of one radiator, flows into the liquid inlet of the other radiator after cooling the radiator, and finally flows out of the liquid outlet of the radiator.
In the invention, the cooling liquid before the cooling work flows in the water inlet pipe, and the cooling liquid after the cooling work flows in the water outlet pipe. Leading out a water inlet head in the water inlet pipe, leading water of the water inlet head into a liquid inlet of a first radiator in a radiator group, cooling the radiator, flowing out of a liquid outlet of the radiator, then flowing into a liquid inlet of a second radiator, finally flowing out of the liquid outlet of the second radiator, and arranging a liquid outlet head on the liquid outlet, wherein the liquid outlet head is connected with a liquid outlet pipe and takes away cooling liquid after the cooling process.
Meanwhile, in the heat dissipation mechanism provided by the invention, the damping resistor does not need to be provided with a radiator independently, so that the water receiving port is prevented from being arranged independently, and the occurrence of water leakage points is effectively avoided. Through the scheme, the total water gap quantity can be effectively reduced, water leakage points are further reduced, and the reliability of the device is improved.
3. According to the thyristor press-fitting structure provided by the embodiment of the invention, the insulated supporting beam in the thyristor press-fitting structure is provided with the climbing increasing groove for increasing the creepage distance between the radiators, so that the problem of insufficient creepage distance between two adjacent radiators is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure of a thyristor assembly according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a heat sink according to an embodiment of the present invention;
fig. 3 is a schematic flow diagram of a cooling liquid in a radiator group formed by two radiators according to an embodiment of the present invention;
fig. 4 is a schematic view of a specific example of a thyristor press-fitting structure provided in an embodiment of the invention;
fig. 5 (a) -5 (d) are schematic views showing a specific example of an installation process of the thyristor press-fitting structure provided in the embodiment of the invention;
fig. 6 is a cross-sectional view of a specific example of a thyristor press-fit structure provided in an embodiment of the invention;
fig. 7 is a cross-sectional view of a specific example of a pressure assembly in an embodiment of the invention.
Reference numerals illustrate:
1-a thyristor; 2-a damping resistor; 3-a heat sink; 31-damping resistor heat dissipation area;
32-thyristor heat dissipation area; 33-damping resistor cooling flow channel; 34-thyristor cooling flow channel;
35-a liquid inlet; 36-a liquid outlet; 4-equalizing resistance; 5-an insulating pull rod;
51-neck-shrinking; 53-bearing end;
61-a movable end plate; 611-mounting holes; 62-fixing end plates;
7-a pressure assembly; 71-an adapter; 72-locking the nut; 73-press-fitting a screw; 74-disc springs;
75-disc spring pressing sheets; 77-spherical washer; 771-boss; 772-aligning sphere;
79-conical washers; 791-mesopores; 792-aligning cone;
81-a first busbar; 811-aligning the holes; 82-a second busbar; 9-insulating support beams;
91-climbing grooves; 10-hanging rings.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment of the invention provides a thyristor press-fitting structure, as shown in fig. 4 and 6, which comprises: the thyristor assembly is provided with a voltage equalizing resistor 4 at one side; the extending directions of the insulating pull rods 5 are consistent with the extending directions of the thyristor assemblies; the two ends of the plurality of insulating pull rods 5 are respectively connected to the movable end plate 61 and the fixed end plate 62, and the movable end plate 61, the fixed end plate 62 and the insulating pull rods 5 form a containing cavity for containing the thyristor assembly; the thyristor assembly comprises: a plurality of radiators 3 arranged along the same linear array, and thyristors 1 are arranged between two adjacent radiators 3; as shown in fig. 1 and 2, the heat sink 3 is provided with a damping resistor heat dissipation area 31 for mounting the damping resistor 2, and a thyristor heat dissipation area 32 corresponding to the thyristor; the cooling flow passage is arranged inside the radiator 3, the cooling liquid flows along the cooling flow passage, and the cooling liquid firstly flows into the thyristor heat dissipation area 32 and then flows into the damping resistor heat dissipation area 31 to cool the thyristor 1 and the damping resistor 2 connected to the radiator 3.
The heat dissipation mechanism provided by the embodiment adopts the design that the thyristor 1 and the damping resistor 2 share the radiator 3, so that the space occupied by the damping resistor 2 is saved, and the volume is reduced.
In this embodiment, as shown in fig. 2 and 3, a liquid inlet 35 and a liquid outlet 36 are formed on the side wall of the radiator 3 different from the thyristor, two adjacent radiators 3 are connected in series to form a radiator group, two radiators 3 share a water path, cooling liquid flows in through the liquid inlet 35 of the radiator 3 on the left side, sequentially passes through the thyristor cooling flow channel 34 and the damping resistor cooling flow channel 33, cools the radiator, flows out from the liquid outlet 36 and flows into the liquid inlet 35 of the radiator 3 on the right side, and finally flows out from the liquid outlet 36 of the radiator 3.
In this embodiment, the cooling liquid before the cooling operation flows in the water inlet pipe, and the cooling liquid after the cooling operation flows in the water outlet pipe, and the flow direction of the cooling liquid is shown by the arrow direction in fig. 3. The water inlet pipe is led out, water of the water inlet head enters a liquid inlet 35 of a first radiator 3 in a radiator group, after cooling the radiator 3, the water flows out of a liquid outlet 36 of the radiator 3, then flows into the liquid inlet 35 of a second radiator 3, finally flows out of the liquid outlet 36 of the second radiator 3, a water outlet head is arranged on the liquid outlet 36, and the water outlet head is connected with a water outlet pipe and takes away cooling liquid after the cooling process.
Meanwhile, in the heat dissipation structure provided by the embodiment, the damping resistor 3 does not need to be provided with the radiator 3 alone, and further the water receiving port can be prevented from being arranged alone, so that the occurrence of water leakage points is effectively avoided. Through the scheme, the total water gap quantity can be effectively reduced, water leakage points are further reduced, and the reliability of the device is improved.
In this embodiment, in particular, the damping resistor 2 is mounted on the damping resistor heat dissipation area 31 by means of screws, which saves space occupied by the damping resistor 2 on the heat sink 3, thereby reducing the size of the thyristor assembly.
In this embodiment, the voltage-equalizing resistor 4 is disposed on the side wall of the thyristor assembly, which is far away from the water inlet of the radiator, and the voltage-equalizing resistor 4 is mounted on the radiator 3, and the heat of the voltage-equalizing resistor 4 is taken away by using the cooling liquid in the cooling flow channel inside the radiator 3, so as to dissipate the heat of the voltage-equalizing resistor 4.
As shown in fig. 4, the thyristor press-mounting structure provided by the embodiment of the invention further includes an insulating support beam 9, the insulating support beam 9 is disposed between the movable end plate 61 and the fixed end plate 62 and is located at the bottom of the thyristor assembly, the insulating support beam 9 is used for supporting the thyristor assembly, and the movable end plate 61 and the fixed end plate 62 adopt the four-pointed star structure as shown in fig. 4, so that the weight of the thyristor press-mounting structure is reduced to the greatest extent on the premise of ensuring the strength, and in addition, the insulating support beam 9 is provided with a climbing increasing groove 91 for increasing the creepage distance between the radiators 3, thereby solving the problem of insufficient creepage distance between two adjacent radiators 3.
In an embodiment, the number of the insulating pull rods 5 is four, and the extending directions of the four insulating pull rods 5 are consistent with the extending directions of the thyristor assembly, so as to fix the thyristor assembly, and in practical application, the number of the insulating pull rods 5 can be adjusted according to the needs, but not limited to this. The two ends of the insulation pull rod 5 are provided with neck parts 51, the movable end plate 61 and the fixed end plate 62 are provided with connecting holes with gaps, the two ends of the insulation pull rod 5 are provided with neck parts 51, the adjacent neck parts 51 are provided with steps with outer diameters larger than those of the neck parts 51, one side of each step is provided with a pressure-bearing end 53, the movable end plate 61 and the fixed end plate 62 are provided with connecting holes with gaps, the neck parts 51 enter the connecting holes through the gaps, external force acts on the movable end plate 61 and the fixed end plate 62, the connecting holes move to the step, and the movable end plate 61 and the fixed end plate 62 are limited by the pressure-bearing ends 53 to prevent falling. The insulating pull rod 5, the movable end plate 61 and the fixed end plate 62 adopt a plug-in pull structure, and the plug-in action is as follows: the necking part 51 of the insulation pull rod 5 is inserted into the connecting hole of the movable end plate 61 and the fixed end plate 62; stretching action is as follows: stretching the insulating pull rod 5 to the distal end of the movable end plate 61 and the fixed end plate 62; the insulating tie rod 5 fixes the insulating support beam 9 between the movable end plate 61 and the fixed end plate 62 by the insertion and pulling action.
As shown in fig. 4 and 6, in order to realize the electrical connection function of the thyristor assembly, a first busbar 81 and a second busbar 82 are respectively connected to two ends of the thyristor assembly, and when the thyristor press-fitting structure works, current flows into the thyristor assembly through the first busbar 81 and then flows out of the second busbar 82. Meanwhile, a pressure assembly 7 is arranged in the accommodating cavity at a position between the thyristor assembly and the movable end plate 61, and the pressure assembly 7 is used for tightly attaching the first busbar 81 and the second busbar 82 to the thyristor assembly.
In an alternative embodiment, the first busbar 81 is attached to the pressure assembly 7 and the second busbar 82 is attached to the last heatsink 3 of the thyristor assembly remote from the pressure assembly 7.
In this embodiment, as shown in fig. 7, the movable end plate 61 is provided with a mounting hole 611, and the pressure assembly 7 includes: an adapter 71 mounted in the mounting hole 611 of the movable end plate 61; a press-fit screw 73 nested in the adapter 71; and a pressure member, disposed between the press-fit screw 73 and the first busbar 81, for providing an elastic force for pressing the first busbar 81 against the thyristor assembly.
Specifically, the pressure member includes: a conical washer 79 movably sleeved on the inner wall of the press-fit screw 73 relative to the press-fit screw 73; the disc spring pressing piece 75 is connected to the conical washer 79 in an interference mode, a disc spring 74 is arranged between the disc spring pressing piece 75 and the press-fit screw 73, and the disc spring 74 is used for providing the elastic force.
Meanwhile, a centering hole 791 is formed in the conical washer 79, a spherical washer 77 is arranged between the centering hole 791 and the first busbar 81, the spherical washer 77 is embedded into the centering hole 791, and at this time, a aligning spherical surface 772 of the spherical washer 77 is in line contact with an aligning conical surface 792 of the conical washer 79.
The first busbar 81 is provided with an alignment hole 811, one end of the spherical washer 77 away from the alignment hole 791 is provided with a boss 771, and the boss 771 is inserted into the alignment hole 811 to stably connect the spherical washer 77 to the first busbar 81.
As shown in fig. 7, the pressure assembly 7 further includes: when the lock nut 72 and the pressure assembly 7 are actually installed, the adapter 71 is firstly installed in the installation hole 611 of the movable end plate 61, then the lock nut 72 is screwed on the root of the press-fit screw 73, the press-fit screw 73 is inserted into the adapter 71,
the assembly process of the pressure assembly 7 is as follows:
sleeving a disc spring 74 and a disc spring pressing sheet 75 into the press-fit screw 73, and adaptively installing the press-fit screw 73 and an outer shaft at the rear end of the press-fit screw 73; the press-fitting force is adjusted by the cooperation of the aligning spherical surface 772 of the spherical gasket 77 and the aligning conical surface 792 on the conical gasket 79, so that the pressure always points to the center of the sphere. The fixing member of the pressure member is connected to the outer circle of the adapter 71, the ejection mechanism of the pressure member is propped against the central axis of the press-fitting screw 73, the pressure compresses the disc spring 74, the lock nut 72 and the press-fitting screw 73 move simultaneously, and when the pressure reaches the design requirement, the lock nut 72 is screwed on the movable end plate 61.
In an alternative embodiment, the upper parts of the movable end plate 61 and the fixed end plate 62 are further provided with hanging rings 10, and in the installation process, devices such as crown blocks and the like can parallelly hang the multilayer thyristor press-fit structure inside the converter valve module through the hanging rings 10.
As shown in fig. 5 (a) -5 (d), in the thyristor press-mounting structure according to the embodiment of the present invention, the pressure component 7 is first mounted on the movable end plate 61, the first busbar 81 is attached to the pressure component 7, then the thyristors 1 and the heat sinks 3 provided with the damping resistors 2 and the equalizing resistors 4 are alternately arranged until the last heat sink 3 is arranged, and finally the second busbar 82 is attached to the last heat sink 3, and a cross-sectional view of the thyristor press-mounting structure after the completion of the mounting is shown in fig. 5. The whole installation process does not need bolting, reduces installation time and installation cost, and when the thyristor press-mounting structure obtained by adopting the installation method is unloaded, the relative position of the thyristor 1 and the radiator 3 is unchanged, so that the thyristor 1 can be replaced under the condition that the cooling water pipe and the electric connecting piece are not moved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (12)
1. The utility model provides a thyristor pressure equipment structure which characterized in that includes:
a thyristor assembly, wherein one side of the thyristor assembly is provided with a voltage equalizing resistor (4);
the extending directions of the insulating pull rods (5) are consistent with the extending directions of the thyristor assemblies;
the two ends of the insulating pull rods (5) are respectively connected to the movable end plate (61) and the fixed end plate (62), and the movable end plate (61), the fixed end plate (62) and the insulating pull rods (5) form a containing cavity for containing the thyristor assembly;
the thyristor assembly comprises:
a plurality of radiators (3) arranged along the same linear array, and thyristors (1) are arranged between two adjacent radiators (3); a damping resistor heat dissipation area (31) for installing the damping resistor (2) and a thyristor heat dissipation area (32) corresponding to the thyristor are arranged on the radiator (3);
the cooling flow passage is arranged inside the radiator (3), cooling liquid flows along the cooling flow passage, and firstly flows into the thyristor heat dissipation area (32) and then flows into the damping resistor heat dissipation area (31) to cool the thyristor (1) and the damping resistor (2) which are connected to the radiator (3);
the thyristor press-fitting structure is characterized by further comprising an insulating support beam (9), wherein the insulating support beam (9) is arranged between the movable end plate (61) and the fixed end plate (62) and positioned at the bottom of the thyristor assembly, and the insulating support beam (9) is used for supporting the thyristor assembly before and after the thyristor press-fitting structure is pressed and assembled.
2. The thyristor press-fitting structure according to claim 1, wherein the radiator (3) is provided with a liquid inlet (35) and a liquid outlet (36) on a side wall different from the thyristor (1), two adjacent radiators (3) are connected in series to each other to form a radiator group, the cooling liquid flows in through the liquid inlet (35) of one radiator (3), flows out of the liquid outlet (36) after cooling the radiator (3) and flows into the liquid inlet (35) of the other radiator (3), and finally flows out of the liquid outlet (36) of the radiator (3).
3. The thyristor press-fitting structure according to claim 2, wherein the insulating support beam (9) is provided with a climbing-increasing groove (91).
4. A thyristor press-fit structure according to claim 3, characterized in that both ends of the thyristor assembly are connected with a first busbar (81) and a second busbar (82), respectively, and that current flows into the thyristor assembly through the first busbar (81) and then flows out of the second busbar (82).
5. The thyristor press-fit structure according to claim 4, wherein a pressure component (7) is provided in the accommodation chamber at a position between the thyristor component and the movable end plate (61), the pressure component (7) being configured to abut the first busbar (81) on the thyristor component.
6. The thyristor press-fit structure according to claim 5, wherein the first busbar (81) is attached to the pressure component (7), and the second busbar (82) is attached to a last heat sink (3) of the thyristor component remote from the pressure component (7).
7. The thyristor press-fit structure according to claim 5, wherein the movable end plate (61) is provided with a mounting hole (611), and the pressure assembly (7) includes:
an adapter (71) mounted in the mounting hole (611) of the movable end plate (61);
a press-fit screw (73) nested in the adapter (71);
and the pressure piece is arranged between the press-fit screw (73) and the first busbar (81) and is used for providing elastic force for enabling the first busbar (81) to press the thyristor assembly.
8. The thyristor press-fit structure according to claim 7, wherein the pressure member includes:
a conical washer (79) which is sleeved on the inner wall of the press-fit screw (73) in a manner of moving relative to the press-fit screw (73);
the disc spring pressing piece (75) is connected to the conical washer (79) in an interference mode, a disc spring (74) is arranged between the disc spring pressing piece (75) and the press-fit screw (73), and the disc spring (74) is used for providing the elastic force.
9. The thyristor press-fit structure according to claim 8, characterized in that a centering hole (791) is provided on the conical surface washer (79), a spherical surface washer (77) is provided between the centering hole (791) and the first busbar (81), the spherical surface washer (77) is embedded in the centering hole (791), and a aligning spherical surface (772) of the spherical surface washer (77) is in line contact with a aligning conical surface (792) of the conical surface washer (79).
10. The thyristor press-fit structure according to claim 9, characterized in that an alignment hole (811) is provided on the first busbar (81), a boss (771) is provided at an end of the spherical washer (77) remote from the alignment hole (791), and the boss (771) is inserted into the alignment hole (811) to stably connect the spherical washer (77) to the first busbar (81).
11. The thyristor press-fitting structure according to claim 1, characterized in that both ends of the insulating tie rod (5) are provided with neck portions (51), steps having an outer diameter larger than that of the neck portions (51) are provided on adjacent neck portions (51), one side of each step is provided with a pressure-bearing end (53), the movable end plate (61) and the fixed end plate (62) are provided with connecting holes with notches, the neck portions (51) enter the connecting holes through the notches, external force acts on the movable end plate (61) and the fixed end plate (62), the connecting holes move to the step, and the movable end plate (61) and the fixed end plate (62) are restricted by the pressure-bearing ends (53) to prevent falling out.
12. The thyristor press-fitting structure according to claim 11, characterized in that upper portions of the movable end plate (61) and the fixed end plate (62) are provided with a hanging ring (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346490.9A CN108417547B (en) | 2018-04-17 | 2018-04-17 | Thyristor press-fitting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346490.9A CN108417547B (en) | 2018-04-17 | 2018-04-17 | Thyristor press-fitting structure |
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| CN108417547A CN108417547A (en) | 2018-08-17 |
| CN108417547B true CN108417547B (en) | 2024-03-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943426A (en) * | 1973-09-25 | 1976-03-09 | Siemens Akteiengesellschaft | Thyristor column |
| CN102097809A (en) * | 2010-11-23 | 2011-06-15 | 株洲变流技术国家工程研究中心有限公司 | Thyristor valve block of static var compensator (SVC) |
| CN203690282U (en) * | 2014-01-06 | 2014-07-02 | 国家电网公司 | Novel insulating pulling tape type thyristor device |
| CN203883667U (en) * | 2013-09-27 | 2014-10-15 | 中冶赛迪电气技术有限公司 | Thyristor self-cooling power module |
| CN105023895A (en) * | 2015-06-24 | 2015-11-04 | 李泽华 | Water cooling heat radiator |
| CN208256657U (en) * | 2018-04-17 | 2018-12-18 | 全球能源互联网研究院有限公司 | A kind of thyristor press-assembling structure |
-
2018
- 2018-04-17 CN CN201810346490.9A patent/CN108417547B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943426A (en) * | 1973-09-25 | 1976-03-09 | Siemens Akteiengesellschaft | Thyristor column |
| CN102097809A (en) * | 2010-11-23 | 2011-06-15 | 株洲变流技术国家工程研究中心有限公司 | Thyristor valve block of static var compensator (SVC) |
| CN203883667U (en) * | 2013-09-27 | 2014-10-15 | 中冶赛迪电气技术有限公司 | Thyristor self-cooling power module |
| CN203690282U (en) * | 2014-01-06 | 2014-07-02 | 国家电网公司 | Novel insulating pulling tape type thyristor device |
| CN105023895A (en) * | 2015-06-24 | 2015-11-04 | 李泽华 | Water cooling heat radiator |
| CN208256657U (en) * | 2018-04-17 | 2018-12-18 | 全球能源互联网研究院有限公司 | A kind of thyristor press-assembling structure |
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| CN108417547A (en) | 2018-08-17 |
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