CN208754191U - A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT - Google Patents
A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT Download PDFInfo
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- CN208754191U CN208754191U CN201821366360.3U CN201821366360U CN208754191U CN 208754191 U CN208754191 U CN 208754191U CN 201821366360 U CN201821366360 U CN 201821366360U CN 208754191 U CN208754191 U CN 208754191U
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Abstract
The three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT that the utility model proposes a kind of, including valve body frame assembly, it is equipped with power device in the valve body frame assembly, is equipped between the power device both ends and the valve body frame assembly for applying stressed compression adjustment mechanism to the power device；The valve body frame assembly side wall is equipped with AC connection terminal, the AC connection terminal is connect with the power device, the valve body frame assembly is equipped with water inlet pipe and outlet pipe, the water inlet pipe and outlet pipe are connected to the power device, the IEGT packing forms that the component uses are crimping forms, inside is had the advantage that without binding line, reliability is higher；Two-side radiation, current-carrying capability are stronger；Compression joint type encapsulation, has stronger explosion-proof and moisture protection.
Description
Technical field
The utility model relates to the NPC three-level current transformer fields in power electronics industry, more particularly to are based on compression joint type
The three level large capacity water cooling unsteady flow device assemblies of IEGT.
Background technique
With the rise of offshore wind farm and energy internet, for the demand of compact full-control type high-voltage large-capacity current transformer
Also more more and more urgent.(Insulated Gate Bipolar Transistor, insulated gate bipolar are brilliant by modular IGBT at present
Body pipe) voltage highest can accomplish that 6500V, electric current can accomplish 750A, the biggish module voltage of relative capacity can accomplish
4500V, electric current can accomplish 1200A.The capacity limit of the modular IGBT capacity of high-voltage large-capacity current transformer, in order to reach
Larger capacity, such as 4MVA or more, it is necessary in parallel using modular IGBT topology in parallel or based on modular IGBT.Due to mould
Block Formulas I GBT rated current it is small and can only single side heat dissipation, cause identical large capacity lower volume and weight larger.IEGT
(Injection Enhanced Gate Transistor, IEGT) is that the commercialization two-side radiation that Toshiba releases controls device entirely
Part, peak capacity reaches 3000A/4500V at present, is highly suitable for high-voltage large-capacity current transformer.
The large capacity current transformer using IEGT seen at present, have patent of invention ZL201010121677.2 and
ZL201210272186.7, ZL201020128033.1 etc..But had the following problems in above-mentioned patent: 1, being radiated and pressed using single side
IEGT is met, causes heat dissipation effect poor, through-current capability, moisture protection, explosion-proof are poor；2, above-mentioned patent opens up general structural capacity
It is smaller；3, structure is complicated for the LRCD clamp circuit used in above-mentioned patent.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of three level large capacity water based on compression joint type IEGT
Cold unsteady flow device assembly, including valve body frame assembly, the valve body frame assembly is interior to be equipped with power device, the power device both ends
It is equipped between the valve body frame assembly for applying stressed compression adjustment mechanism to the power device；The valve body frame
Frame component side wall is equipped with AC connection terminal, and the AC connection terminal is connect with the power device, on the valve body frame assembly
Equipped with water inlet pipe and outlet pipe, the water inlet pipe and outlet pipe are connected to the power device.
Preferably, the valve body frame assembly includes upper head plate disposed in parallel, bottom plate, the upper head plate and bottom plate
Between set that there are three the lid that insulate, the insulation lid and the upper head plate and bottom plate formation cuboid frameworks；The lower end
The quadrangle of plate is equipped with insulated pull rod, and the insulated pull rod passes through the upper head plate and is fixed on the upper end by insulating nut
On plate.
Preferably, the adjustment mechanism that compresses includes being located at the disc spring on the inside of the upper head plate, being located on the bottom plate
Adjusting screw, described power device one end is pressed in the disc spring, cross-over block is equipped between the other end and the bottom plate,
The adjusting screw passes through the bottom plate and is pressed on the cross-over block.
Preferably, the power device includes several IEGT devices, drive circuit board, power supply, resistance and capacitor, and two
It is connected with diode between group IEGT device, is equipped with water-cooled plate between the adjacent IEGT device.
Preferably, the water-cooled plate includes plate body, and water supply hose and delivery hose, the water inlet are connected on the plate body
Hose is connected on the water inlet pipe, and the delivery hose is connected on the outlet pipe.
Preferably, the face of the water-cooled plate is connect by thermal conductivity cream with the face of the IEGT device.
Preferably, the drive circuit board, which is connected to, is arranged IEGT device top.
Preferably, it is set between the IEGT device there are three in line connection terminal, described in the in line connection terminal stretches out
Valve body frame assembly is simultaneously connected with the capacitor, and the capacitor and the resistance are connected in parallel by copper bar.
The utility model proposes the three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT have it is following beneficial
Effect:
1, this valve body frame assembly includes 4 all insulation pull rods, 4 insulating nuts, 1 insulation location nut, upper head plate
And bottom plate, frame is firm, reliable, ensure that the depth of parallelism of upper head plate and bottom plate exists by adjusting insulation location nut
Within 0.2mm；
2, all insulation pull rod uses superpower bearing capacity epoxy insulation material, and all insulation entirety pull rod bearing capacity is big；
3, using compression joint type IEGT, compared with modular IGBT, there is two-side radiation, through-current capability is big, moisture protection is strong and
Excellent explosion-proof performance.In addition, short circuit failure mode after the peculiar failure of compression joint type IEGT device, makes it be easy to progress device superfluous
Remaining design has higher reliability.
4, press structure presses mode using center, and super large threaded self-locking structure meets big pressure assembling force cramped construction
Design requirement, compact-sized, reliable, bearing capacity is big, be suitable for big operating current, large capacity IEGT valve；
5, compact-sized, rationally distributed, water route, primary circuit and driving circuit are arranged apart, make entire IEGT valve arrangement
It is compact without interfering with each other.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described.
Fig. 1 is the schematic perspective view of the utility model；
Fig. 2 is the schematic bottom view of the utility model；
Fig. 3 is the inside schematic perspective view of the utility model；
Fig. 4 is the single-phase schematic diagram of NPC type three-level current transformer；
Fig. 5 is the 3-phase power converter schematic diagram of NPC type tri-level single facies principle figure composition；
Wherein, 1, upper head plate；2, bottom plate；3, insulate lid；4, insulated pull rod；5, insulating nut；6, disc spring；7, it adjusts
Whole screw；8, cross-over block；9, IEGT device；10, drive circuit board；11, power supply；12, resistance；13, capacitor；14, two
Pole pipe；15, water-cooled plate；16, water inlet pipe；17, outlet pipe；18, water supply hose；19, delivery hose；20, AC connection terminal；21,
In line connection terminal.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
In order to meet market to high-voltage large-capacity current transformer demand, solve biggish based on modular IGBT volume and weight
Deficiency, this patent uses two-side radiation IEGT, referred to as the compression joint type IEGT of Toshiba, in conjunction with NPC type three-level topology structure,
Provide a kind of three level large capacity water cooling variable flow assemblies using compression joint type IEGT.The water cooling component is integrated with IEGT switch
Driving circuit necessary to acting, current supply circuit and heat-radiation loop, overall mechanism is compact, rationally distributed, is suitable for volume, again
Amount and the very high large capacity current transformer occasion of reliability requirement.
As shown in FIG. 1 to FIG. 2, the utility model proposes a kind of, and the three level large capacity water coolings based on compression joint type IEGT become
Device assembly, including valve body frame assembly are flowed, is equipped with power device, the power device both ends and institute in the valve body frame assembly
It states and is equipped between valve body frame assembly for applying stressed compression adjustment mechanism to the power device；Valve body frame assembly
Structure are as follows: including upper head plate 1 disposed in parallel, bottom plate 2, set between the upper head plate 1 and bottom plate 2 there are three insulate lid
3, the insulation lid and the upper head plate 1 and bottom plate 2 form cuboid framework, upper head plate 1 and bottom plate 2 as rectangular
Two top surfaces of body and ground, three insulation lids 3 are on the side of cuboid；The quadrangle of the bottom plate 2 is equipped with insulation and draws
Bar 4, the insulated pull rod 4 pass through the upper head plate 1 and are fixed on the upper head plate 1 by insulating nut 5, the insulation of setting
4 one end of pull rod is fixed on bottom plate 2, and the other end passes through upper head plate 1, and end is equipped with external screw thread, is locked by insulating nut 5
On upper head plate 1, insulated pull rod 4 ensure that the depth of parallelism of upper head plate 1 and bottom plate 2 within 0.2mm, and uses superpower carrying
Power epoxy insulation material, all insulation entirety pull rod bearing capacity is big, increases the firm and reliability of entire component, eliminates simultaneously
Internal binding line, considerably increases reliability.The valve body frame assembly side wall is equipped with AC connection terminal 20, the connecting pin AC
Son 20 is connect with the power device, as shown in figure 3, AC connection terminal 20 is C-shaped, both ends pass through insulation lid and are connected to function
On rate component, and positioned at the insulation lid portion outside for connecting AC AC power source.
For the compactedness in order to further promote (PCC) power, it is provided at (PCC) power both ends and compresses adjustment mechanism, institute
Stating and compressing adjustment mechanism includes disc spring 6, the adjusting screw 7 on the bottom plate 2 positioned at 1 inside of upper head plate, institute
It states power device one end to be pressed in the disc spring 6, cross-over block 8, the adjustment is equipped between the other end and the bottom plate 2
Screw 7 passes through the bottom plate 2 and is pressed on the cross-over block 8, by locking adjusting screw 7, can guarantee intermediate function
Rate component is stablized, and adjusting screw 7 is pressed on cross-over block 8, cooperates the power of disc spring 6, can greatly increase between (PCC) power
Compactedness, compression joint type encapsulation, has stronger explosion-proof and moisture protection.
And specifically, the power device includes several IEGT devices 9 (inside is with freewheeling diode), driving circuit
Plate 10, power supply 11, resistance 12 and capacitor 13, the corresponding power supply 11 of each IEGT, power supply 11 are uniformly arranged
On upper head plate 1, it is connected with diode 14 between two groups of IEGT devices 9, is equipped with water cooling between the adjacent IEGT device 9
Plate 15, IEGT device, diode, water-cooled plate center point-blank, and above-mentioned device is applied certain pressure, such as
60 ± 6kN is fixed together by disc spring and insulated pull rod, and the water-cooled plate 15 includes plate body, be connected on the plate body into
Water hose 18 and delivery hose 19, the valve body frame assembly be equipped with water inlet pipe 16 and outlet pipe 17, water inlet pipe 16 and go out
Connecting hole is placed on water pipe 17 respectively, the water supply hose 18 is connected on the water inlet pipe 16, and the delivery hose 19 connects
It is connected on the outlet pipe 17, and the face of the water-cooled plate 15 is connect by thermal conductivity cream with the face of the IEGT device 9,
It is set between the IEGT device 9 there are three in line connection terminal 21, the in line connection terminal 21 stretches out the valve body frame set
Part is simultaneously connected with the capacitor 13, and to reinforce the fastness that capacitor 13 is installed, 13 fixed plate of capacitor is arranged on insulation lid, will
Capacitor 13 is installed in 13 fixed plate of capacitor, and the capacitor 13 is connected with the resistance 12 by copper bar, three in line connecting pins
Son 21 is DC power anode namely for connecting Vdc+, NFC and Vdc-, Vdc+, and NFC is three electric converters, and Vdc- is straight
Power cathode is flowed, carries out forced water cooling heat dissipation, all IEGT devices 9 and diode 14 by two faces of the water-cooled plate 15 to IEGT
It is all made of parallel cooling mode, there is higher overload capacity, is particularly suitable for requiring higher wind-powered electricity generation unsteady flow to overload capacity
The motor side of device, and it is same by 17 Inlet and outlet water of water inlet pipe 16 and outlet pipe, increase the compactedness of structure.
In order to increase the compactedness of entire mechanism, the drive circuit board 10, which is connected to, is arranged the IEGT device 9
Top.
The single-phase schematic diagram of NPC type three-level current transformer such as Fig. 4 of the utility model；Using NPC type tri-level single facies principle
Scheme composition 3-phase power converter as shown in figure 5,
Wherein T1 and D1, T2 and D2, T3 and D3, T4 and D4 are combined, and form the IEGT device 9 in Fig. 2；D5 and
D6 is diode 14；Cs1 and Cs2 is capacitor 13；Resistance 12 in Rp1 and Rp2 corresponding diagram 2；DR1, DR2, DR3, DR4 are corresponding
For driving circuit；AC connection terminal 20 in AC corresponding diagram 3；First in line connecting pin in Vdc+ corresponding diagram 1 from left to right
Son 21；The in line connection terminal 21 of third in Vdc- corresponding diagram 1 from left to right；The in line connection of centre in NPC corresponding diagram 1
Terminal 21.Wherein IEGT is purchase high power device, and driving circuit is the prior art, can in IEGT product description
See, therefore does not specifically describe in this application.
The present apparatus is mainly used for offshore wind farm current transformer based on the three level water cooling large capacity component of NPC type of compression joint type IEGT
Or power grid large capacity current transformer.The IEGT packing forms that the component uses are crimping forms, are had the advantage that 1) internal
Without binding line, reliability is higher；2) two-side radiation, current-carrying capability are stronger；3) compression joint type encapsulates, and has stronger explosion-proof and anti-
Tidal energy power；4) Component driver uses optical fiber interface, has higher real-time and reliability；5) component integrally uses forced water cooling
Heat dissipation, all IEGT devices and diode are all made of parallel cooling mode, have higher overload capacity, are particularly suitable for mistake
Loading capability requires the motor side of higher wind electric converter.
A variety of modifications of embodiment will be readily apparent to those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (8)
1. a kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT, which is characterized in that including valve body frame
Component, the valve body frame assembly is interior to be equipped with power device, sets between the power device both ends and the valve body frame assembly
Have for applying stressed compression adjustment mechanism to the power device；
The valve body frame assembly side wall is equipped with AC connection terminal, and the AC connection terminal is connect with the power device；It is described
Valve body frame assembly is equipped with water inlet pipe and outlet pipe, and the water inlet pipe and outlet pipe are connected to the power device.
2. the three level large capacity water cooling unsteady flow device assemblies according to claim 1 based on compression joint type IEGT, feature exist
Include upper head plate disposed in parallel, bottom plate in, the valve body frame assembly, set between the upper head plate and bottom plate there are three
Insulate lid, the insulation lid and the upper head plate and bottom plate formation cuboid framework；It is set on the quadrangle of the bottom plate
There is insulated pull rod, the insulated pull rod passes through the upper head plate and is fixed on the upper head plate by insulating nut.
3. the three level large capacity water cooling unsteady flow device assemblies according to claim 2 based on compression joint type IEGT, feature exist
In the adjustment mechanism that compresses includes the disc spring on the inside of the upper head plate, the adjusting screw on the bottom plate, institute
It states power device one end to be pressed in the disc spring, cross-over block, the adjusting screw is equipped between the other end and the bottom plate
Across the bottom plate and it is pressed on the cross-over block.
4. the three level large capacity water cooling unsteady flow device assemblies according to claim 1 based on compression joint type IEGT, feature exist
In, the power device include several IEGT devices, drive circuit board, power supply, resistance and capacitor, two groups of IEGT devices it
Between be connected with diode, water-cooled plate is equipped between the adjacent IEGT device.
5. the three level large capacity water cooling unsteady flow device assemblies according to claim 4 based on compression joint type IEGT, feature exist
In the water-cooled plate includes plate body, and water supply hose and delivery hose are connected on the plate body, and the water supply hose is connected to institute
It states on water inlet pipe, the delivery hose is connected on the outlet pipe.
6. the three level large capacity water cooling unsteady flow device assemblies according to claim 4 or 5 based on compression joint type IEGT, feature
It is, the face of the water-cooled plate is connect by thermal conductivity cream with the face of the IEGT device.
7. the three level large capacity water cooling unsteady flow device assemblies according to claim 4 based on compression joint type IEGT, feature exist
In the drive circuit board, which is connected to, is arranged IEGT device top.
8. the three level large capacity water cooling unsteady flow device assemblies according to claim 4 based on compression joint type IEGT, feature exist
In being set between the IEGT device there are three in line connection terminal, the in line connection terminal stretches out the valve body frame assembly
And it is connected with the capacitor, the capacitor and the resistance are connected in parallel by copper bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821366360.3U CN208754191U (en) | 2018-08-23 | 2018-08-23 | A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT |
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| CN201821366360.3U CN208754191U (en) | 2018-08-23 | 2018-08-23 | A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 101, No. 60, 99 Lane, Chunguang Road, Minhang District, Shanghai 201100 Patentee after: Shanghai Xuhe Energy Saving Technology Co.,Ltd. Address before: 200241 Room 101, No. 60, Lane 99, Chunguang Road, Minhang District, Shanghai Patentee before: SHANGHAI XUHE AUTOMOTIVE ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230201 Address after: 1st Floor, Building 28, No. 6055, Jinhai Road, Fengxian District, Shanghai, 201406 Patentee after: Shanghai Xuxuan electronic parts Co.,Ltd. Address before: Room 101, No. 60, 99 Lane, Chunguang Road, Minhang District, Shanghai 201100 Patentee before: Shanghai Xuhe Energy Saving Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |