CN203706792U - Main transformer clamp cover type cooling device with SF6 medium as coolant - Google Patents
Main transformer clamp cover type cooling device with SF6 medium as coolant Download PDFInfo
- Publication number
- CN203706792U CN203706792U CN201420070882.4U CN201420070882U CN203706792U CN 203706792 U CN203706792 U CN 203706792U CN 201420070882 U CN201420070882 U CN 201420070882U CN 203706792 U CN203706792 U CN 203706792U
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- CN
- China
- Prior art keywords
- main transformer
- oil
- jacket type
- transformer
- cover type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 title abstract description 26
- 239000003507 refrigerant Substances 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000004087 circulation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
Abstract
The utility model relates to a main transformer clamp cover type cooling device with an SF6 medium as the coolant. The main transformer clamp cover type cooling device comprises an SF6 refrigeration compressor, a cooler, a throttle valve and an SF6 clamp cover type evaporator welded to a shell of a main transformer body. The SF6 coolant in the SF6 clamp cover type evaporator flows cyclically through the SF6 refrigeration compressor and the cooler. Transformer oil in the main transformer body flows cyclically from an oil outlet to an oil inlet through an oil pump. Cold transformer oil carries away heat generated by a main transformer coil and an iron core, and is heated to turn into hot transformer oil. The hot transformer oil conducts heat exchange with the low-temperature SF6 coolant in the SF6 clamp cover type evaporator through the side wall of the shell of the main transformer body and then turns into cold transformer oil again. The cold transformer oil cools the main transformer coil and the iron core again. The main transformer clamp cover type cooling device has the great advantages of being safe, reliable, high in cooling efficiency, small in size, low in oil consumption and maintenance, economical in overall operation and the like, thereby being a revolutionary innovation in main transformer cooling modes.
Description
Technical field
The utility model relates to a kind of with SF
6for the main transformer jacket type heat abstractor of coolant media.
Background technology
Main transformer is in running, due to the effect of electricity and magnetic, its coil and iron core can generate heat, as can not be in time this heat taken away, to cause main transformer to burn the even serious accident of blast, therefore must come cooling coil and iron core by the transformer oil stream being full of in main transformer, and the heat that transformer oil stream is taken away needs to carry out heat exchange by heat abstractor, cooled cold oil stream enters main transformer body again and carries out cooling.The tradition main transformer type of cooling is mainly three kinds of air blast cooling, natural air cooled and water-cooleds, although water-cooled is economical, efficiency is also high, if if generation cooling water in cooling system is to main transformer Seepage, even minor leakage also will cause serious consequence; Air-cooled because air heat content is low, make main transformer cooling effectiveness low, main transformer, heat sink apparatus are manufactured the shortcomings such as bulky, many by oil mass, operating cost is high, maintenance is large.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of with SF
6for the main transformer jacket type heat abstractor of coolant media, can take away safe, reliable, efficient, economically the heat energy that main transformer in service produces, safety, the economical operation of powerful guarantee electric power system main transformer.
To achieve these goals, the technical solution of the utility model is: a kind of with SF
6for the main transformer jacket type heat abstractor of coolant media, comprise SF
6refrigerant compressor, cooler, choke valve and be welded in the SF on main transformer body shell
6jacket type evaporator, described SF
6the outlet of jacket type evaporator connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler connects SF by choke valve
6the import of jacket type evaporator, described SF
6sF in jacket type evaporator
6refrigerant passes through SF
6refrigerant compressor and cooler circulate; The oil-out of described main transformer body bottom is provided with main transformer delivery valve, and the oil-in on described main transformer body top is provided with main transformer inlet valve, and described oil-out is connected oil-in by oil pump with pipeline, and the transformer oil in described main transformer body circulates by oil pump.
Further, described SF
6jacket type evaporator comprises two chucks that are welded in respectively main transformer body shell both sides.
Further, described choke valve is electromagnetic throttle valve, and described electromagnetic throttle valve is electrically connected at control module.
Further, on the connecting line between the oil-out of described main transformer body and the oil-in of main transformer body, oil temperature on-line measuring device is installed, described oil temperature on-line measuring device is electrically connected at control module.
Compared with prior art, the utlity model has following beneficial effect: due to the SF using
6medium, it is except having good insulation, arc extinguishing, putting out combustion performance and stable physicochemical property, or a kind of good refrigerant that has higher thermal enthalpy, the jacket type evaporation endothermic type of cooling using it as refrigerant is compared with traditional main transformer type of cooling, have safe and reliable, cooling effectiveness is high, equipment volume is little, few by oil mass, safeguard less, overall operation economic dispatch huge advantage, be the revolutionary character innovation of the power transformer type of cooling.
The utility model had both overcome in the middle of prior art with the main transformer of water-cooling pattern and is in operation and occurs to main transformer body seepage as cooling system, even small seepage all will produce catastrophe failure in main transformer under high voltage environment, and the serious consequence of even exploding; The shortcomings such as prior art is central because air heat content is low, makes main transformer cooling effectiveness low with air blast cooling or natural air cooled main transformer, and device fabrication volume is large, many by oil mass, operating cost is high, maintenance workload is large are overcome again; Compared with being now widely used traditional main transformer radiating mode, the utility model has huge advantage.
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Accompanying drawing explanation
Fig. 1 be the utility model embodiment with SF
6for the main transformer jacket type heat abstractor schematic diagram of coolant media.
Fig. 2 is that the control module of the utility model embodiment is controlled cold oil stream temperature functional-block diagram automatically.
In figure: 1-SF
6refrigerant compressor, 2-cooler inlet pipe, 3-cooler, 4-cooling blower, 5-cooler goes out pipe, 6-A choke valve, 7-SF
6the A chuck of jacket type evaporator, the SF of 8-A chuck
6liquid feed valve, the SF of 9-A chuck
6air outlet valve, 10-B choke valve, 11-SF
6the B chuck of jacket type evaporator, the SF of 12-B chuck
6liquid feed valve, the SF of 13-B chuck
6air outlet valve, 14-oil temperature on-line measuring device, 15-main transformer delivery valve, 16-oil pump, 17-oil pump outlet valve, 18-main transformer inlet valve, 19-coil and iron core, 20-transformer oil, 21-main transformer body, 22-conservator.
Embodiment
As shown in Figure 1 and 2, a kind of with SF
6for the main transformer jacket type heat abstractor of coolant media, comprise SF
6refrigerant compressor 1, cooler 3, choke valve 6(10) and be welded in the SF on main transformer body 21 shells
6jacket type evaporator 7(11), described SF
6the outlet of jacket type evaporator connects SF
6the import of refrigerant compressor 1, described SF
6the outlet of refrigerant compressor 1 connects the import of cooler 3, and the outlet of described cooler 3 connects SF by choke valve
6the import of jacket type evaporator, described SF
6sF in jacket type evaporator
6refrigerant passes through SF
6refrigerant compressor 1 and cooler 3 circulate; The oil-out of described main transformer body 21 bottoms is provided with main transformer delivery valve 15, the oil-in on described main transformer body 21 tops is provided with main transformer inlet valve 18, described oil-out is connected oil-in by oil pump 16 with pipeline, and the transformer oil 20 in described main transformer body 21 circulates by oil pump 16.
In the present embodiment, described SF
6refrigerant compressor 1, cooler 3, choke valve and SF
6jacket type evaporator etc. has formed SF
6coolant circulating system, wherein cooler 3 can be the forced air cooler of being forced quenching by cooling blower 4, can be also water cooler, owing to being SF in cooler 3
6media for heat exchange, therefore just in case cooling water seepage is also irrelevant with main transformer oil stream; Described SF
6that jacket type evaporator 7 has is safe and reliable, heat exchange efficiency is high, cleaning is easy, safeguard the advantages such as simple.Described main transformer body 21 and oil pump 16 etc. have formed transformer oil flow circulating system, the transformer oil 20 that wherein main transformer body 21 its inside are full of mainly plays insulation and cooling effect, main transformer coil and iron core 19 are in operation because the effect of electricity, magnetic can be generated heat, as not in time this heat taken away, will cause main transformer to burn the even serious accident of blast.
In the present embodiment, regulate cooling effectiveness, the outlet of described cooler 3 and SF for convenient according to actual conditions
6on connecting line between the import of jacket type evaporator, choke valve is installed, with to high temperature SF
6liquid carries out expenditure and pressure.For the convenient oil outlet temperature that detects main transformer body 21, on the connecting line between the oil-out of described main transformer body 21 and the oil-in of main transformer body 21, oil temperature on-line measuring device 14 is installed.Described SF
6that jacket type evaporator has is safe and reliable, heat exchange efficiency is high, cleaning is easy, safeguard the advantages such as simple, it comprises two the A chuck 7 and the B chucks 10 that are welded in respectively main transformer body 21 shell both sides, two chucks are equipped with respectively air outlet valve, liquid feed valve and choke valve, certainly quantity and the position of chuck are not limited to this, can also only arrange one or more; Described oil pump 16 can be oil-immersed pump etc., and the outlet of described oil pump 16 is provided with oil pump outlet valve 17, before transformer oil 20 circulations, should open oil pump outlet valve 17.
In the present embodiment, in order to facilitate intelligent automatic control, specifically electromagnetic throttle valve of described choke valve, specifically temperature monitor of described oil temperature on-line measuring device 14, described SF
6the inner SF of induction can be installed in jacket type evaporator
6the pressure sensor of gas pressure; Described temperature monitor, electromagnetic throttle valve and pressure sensor are all electrically connected at control module, its institute's main transformer body that detects 21 inlet oil temperature signals are sent to control module by described temperature monitor, described control module regulates the valve opening of electromagnetic throttle valve, and described control module can be to make by technological requirement design programming the PLC or the single-chip microcomputer etc. that form.When main transformer body 21 inlet oil temperatures are when too high, the valve opening of electromagnetic throttle valve is turned in described control module control down, reduces SF
6sF in jacket type evaporator
6evaporating pressure, and then reduce SF
6sF in jacket type evaporator
6evaporating temperature is to reduce main transformer body 21 inlet oil temperatures, contrary conversely.
Should be with SF
6for the using method of the main transformer jacket type heat abstractor of coolant media is carried out according to the following steps: the heat that the interior mobile cold transformer oil of (1) main transformer body 21 produces main transformer coil and iron core 19 is taken away, cold transformer oil self is heated and become heat transformer oil; (2) open SF
6refrigerant compressor 1 and cooler 3, heat transformer oil is by mainboard body housing sidewall and SF
6low temperature SF in jacket type evaporator
6refrigerant carries out heat exchange, and its heat is by low temperature SF
6refrigerant is taken away and is become cold transformer oil, and cold transformer oil carries out cooling to main transformer coil and iron core 19 again again; (3) main transformer delivery valve 15, main transformer inlet valve 18 and the oil pump 16 of unlatching main transformer body 21, the transformer oil in main transformer body 21 20 is carried out forced circulation convection current by oil pump 16, greatly increases the heat-exchange capacity of oil stream in main transformer.
In the present embodiment, in step (2), SF
6refrigerant compressor 1 will be from SF
6jacket type evaporator low pressure SF out
6gas compression becomes high pressure-temperature SF
6gas, high pressure-temperature SF
6gas enters and in cooler 3, is cooled to high temperature SF
6liquid, high temperature SF
6liquid flow to SF after the cooling of choke valve expenditure and pressure
6in jacket type evaporator and carry out heat by mainboard body housing sidewall and the intrinsic heat transformer oil of mainboard and conduct and flash to low pressure SF
6gas, low pressure SF
6gas is pumped down to again SF
6compression in refrigerant compressor 1, with this iterative cycles.
In the present embodiment, in step (2), from cooler 3 high temperature SF out
6liquid flow to SF after choke valve throttling
6the import of jacket type evaporator, now because volume sudden enlargement causes part high temperature SF
6liquid rotating becomes low pressure SF
6gas, liquid evaporation becomes in the process of gas can a large amount of heat absorptions and make high temperature SF
6fluid temperature sharply declines, the low temperature SF after temperature declines
6liquid all flashes to low pressure SF after the heat that absorbs a large amount of heat transformer oil
6gas.
In the present embodiment, for the convenient oil outlet temperature that detects main transformer body 21, on the connecting line between the oil-out of described main transformer body 21 and the oil-in of main transformer body 21, oil temperature on-line measuring device 14 is installed.In order to facilitate intelligent automatic control, specifically electromagnetic throttle valve of described choke valve, specifically temperature monitor of described oil temperature on-line measuring device 14; Described SF
6the inner SF of induction can be installed in jacket type evaporator
6the pressure sensor of gas pressure, described temperature monitor, electromagnetic throttle valve and pressure sensor are all electrically connected at control module.As shown in Figure 2, can, according to the real-time online data of temperature monitor, regulate electromagnetic throttle valve by control module, automatically control SF
6sF in jacket type evaporator
6evaporating pressure and SF
6evaporating temperature, to guarantee that the inlet oil temperature of main transformer body 21 is controlled in the scope of setting.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (4)
1. one kind with SF
6for the main transformer jacket type heat abstractor of coolant media, it is characterized in that: comprise SF
6refrigerant compressor, cooler, choke valve and be welded in the SF on main transformer body shell
6jacket type evaporator, described SF
6the outlet of jacket type evaporator connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler connects SF by choke valve
6the import of jacket type evaporator, described SF
6sF in jacket type evaporator
6refrigerant passes through SF
6refrigerant compressor and cooler circulate; The oil-out of described main transformer body bottom is provided with main transformer delivery valve, and the oil-in on described main transformer body top is provided with main transformer inlet valve, and described oil-out is connected oil-in by oil pump with pipeline, and the transformer oil in described main transformer body circulates by oil pump.
2. according to claim 1 with SF
6for the main transformer jacket type heat abstractor of coolant media, it is characterized in that: described SF
6jacket type evaporator comprises two chucks that are welded in respectively main transformer body shell both sides.
3. according to claim 1 with SF
6for the main transformer jacket type heat abstractor of coolant media, it is characterized in that: described choke valve is electromagnetic throttle valve, and described electromagnetic throttle valve is electrically connected at control module.
According to described in claim 1,2 or 3 with SF
6for the main transformer jacket type heat abstractor of coolant media, it is characterized in that: on the connecting line between the oil-out of described main transformer body and the oil-in of main transformer body, oil temperature on-line measuring device is installed, described oil temperature on-line measuring device is electrically connected at control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070882.4U CN203706792U (en) | 2014-02-19 | 2014-02-19 | Main transformer clamp cover type cooling device with SF6 medium as coolant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070882.4U CN203706792U (en) | 2014-02-19 | 2014-02-19 | Main transformer clamp cover type cooling device with SF6 medium as coolant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706792U true CN203706792U (en) | 2014-07-09 |
Family
ID=51057195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420070882.4U Withdrawn - After Issue CN203706792U (en) | 2014-02-19 | 2014-02-19 | Main transformer clamp cover type cooling device with SF6 medium as coolant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811152A (en) * | 2014-02-19 | 2014-05-21 | 国家电网公司 | Jacket-type cooling device and method with SF6 as coolant for main transformers |
-
2014
- 2014-02-19 CN CN201420070882.4U patent/CN203706792U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811152A (en) * | 2014-02-19 | 2014-05-21 | 国家电网公司 | Jacket-type cooling device and method with SF6 as coolant for main transformers |
| CN103811152B (en) * | 2014-02-19 | 2016-02-24 | 国家电网公司 | A kind of with SF 6for main transformer jacket type heat abstractor and the method for coolant media |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |