CN105489359B - Oil immersed type testing transformer with cooling cycle structure - Google Patents
Oil immersed type testing transformer with cooling cycle structure Download PDFInfo
- Publication number
- CN105489359B CN105489359B CN201610071734.8A CN201610071734A CN105489359B CN 105489359 B CN105489359 B CN 105489359B CN 201610071734 A CN201610071734 A CN 201610071734A CN 105489359 B CN105489359 B CN 105489359B
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- CN
- China
- Prior art keywords
- low
- testing transformer
- voltage coil
- cooling tube
- iron core
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/20—Cooling by special gases or non-ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/321—Insulating of coils, windings, or parts thereof using a fluid for insulating purposes only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses the oil immersed type testing transformer with cooling cycle structure, including testing transformer housing, filling insulating oil in testing transformer housing, cored, high-tension coil and low-voltage coil are set in testing transformer housing, high-tension coil and low-voltage coil are coaxially disposed on iron core, high-tension coil is located at outside low-voltage coil, it is characterized in that：Oil immersed type testing transformer also includes cooling cycle structure, including cooling tube and air compressor machine, HFC-134a is filled in cooling tube, cooling tube is attached on iron core and encloses circle around iron core, cooling tube separates low-voltage coil with iron core, neck is offered on the outside tube wall of cooling tube, the shape of neck is adapted with the shape of low-voltage coil, low-voltage coil, which can be embedded in neck, to be formed low-voltage coil and cooling tube to be integrally around on iron core.The present invention has the advantages that good cooling results, structure are novel.
Description
Technical field
The invention belongs to testing transformer technical field, it is related to the cooling device of dry-type transformer, specially with cooling
The oil immersed type testing transformer of loop structure.
Background technology
Testing transformer, refer to forAc voltage withstanding is testedHigh-tension transformer is provided.It is characterized in output voltage height, capacity
Smaller, transformerShort-circuit impedanceVery big, no-load voltage ratio is very big.
Because testing transformer needs to use in testing ground, it is necessary to structure compact to design, capacity of experiment is being met
Under the premise of as far as possible reduce volume, be readily transported and in-site installation.The hair of the coil when working long hours this for testing transformer
Heat is big, and coil easily burns, and causes testing transformer to damage.
, just need to be in transformation in order to which the heat that guarantee test transformer is operationally produced does not influence the normal work of transformer
Increase cooling system on device.Water cooling mode is one of transformer more general type of cooling in the market, i.e., in transformation
Water-cooling apparatus is configured on device, this kind of mode is typically all to use outside by primary or secondary hollow spool circular on iron core
Water circulation realizes that water-cooling apparatus is placed on the outside of coil, the mode of this Local cooling can only cooling surface temperature, it is impossible to
Temperature inside cooling, the heat exchange area between cooling device and coil is smaller, it is impossible to realize good cooling effect.
The content of the invention
The technical problems to be solved by the invention are to be directed to the above-mentioned state of the art, and provide a kind of good cooling results, structure
The novel oil immersed type testing transformer with cooling cycle structure.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：
Oil immersed type testing transformer with cooling cycle structure, including testing transformer housing, testing transformer housing
Cored, high-tension coil and low-voltage coil, high-tension coil and low-voltage coil are set in interior filling insulating oil, testing transformer housing
It is coaxially disposed on iron core, high-tension coil is located at outside low-voltage coil, it is characterized in that：Oil immersed type testing transformer also includes cooling
Loop structure, cooling cycle structure includes filling HFC-134a in cooling tube and air compressor machine, cooling tube, and cooling tube is attached to iron core
Above and circle is enclosed around iron core, cooling tube separates low-voltage coil with iron core, and neck is offered on the outside tube wall of cooling tube, neck
Shape is adapted with the shape of low-voltage coil, and low-voltage coil, which can be embedded in neck, to be made low-voltage coil be formed with cooling tube to be integrally around in
On iron core.
For optimization above-mentioned technical proposal, the concrete measure taken also includes：
Several necks have been arranged side by side on above-mentioned cooling tube.
Above-mentioned cooling tube is wound between the pipeline portions on iron core, adjacent turn and is brought into close contact.
Above-mentioned cooling tube is insulating heat-conductive pipe.
Above-mentioned low-voltage coil uses flat type copper wire.
Insulating barrier is provided between above-mentioned high-tension coil and low-voltage coil.
The section of the aperture position of above-mentioned neck is slightly smaller than low-voltage coil cross section, when low-voltage coil is embedded in neck,
Low-voltage coil is interference fitted with cooling tube.
Support is provided with above-mentioned testing transformer housing, iron core is fixed in testing transformer housing by support.
Compared with prior art, cooling tube is wrapped on iron core by the present invention, and low-voltage coil is wound on cooling tube, is solved
The problem of low-voltage coil positioned at inner side radiates difficult, in order to increase the contact area of low-voltage coil and cooling tube, the present apparatus exists
Neck is offered on the tube wall of cooling tube, low-voltage coil, which can be embedded in neck, makes low-voltage coil form one with cooling tube.Significantly
The heat exchange area between cooling device and coil is added, cooling radiating effect is greatly improved.Filled in cooling tube
Coolant is HFC-134a, with good security performance, it is nonflammable, do not explode, nontoxic, nonirritant, non-corrosiveness.Using
Air compressor machine realizes the coolant circulation in cooling tube.
Brief description of the drawings
Fig. 1 is the structural representation of testing transformer housing of the present invention；
Fig. 2 is the schematic diagram of transformer coli winding；
Fig. 3 is the schematic diagram that cooling tube is wound on iron core；
Fig. 4 is the schematic diagram that low-voltage coil is fixed on cooling tube.
Reference therein is：Testing transformer housing 1, iron core 2, high-tension coil 3, low-voltage coil 4, cooling circulation knot
Structure 5, cooling tube 51, neck 51a, air compressor machine 52, insulating barrier 6, support 7.
Embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
The oil immersed type testing transformer with cooling cycle structure of the present invention, including testing transformer housing 1, experiment become
Cored 2, high-tension coil 3 and low-voltage coil 4, high pressure are set in depressor housing 1 in filling insulating oil, testing transformer housing 1
Coil 3 and low-voltage coil 4 are coaxially disposed on iron core 2, and high-tension coil 3 is located at outside low-voltage coil 4, it is characterized in that：Oil immersed type
Testing transformer also includes cooling cycle structure 5, and cooling cycle structure 5 includes cooling tube 51 and air compressor machine 52, cooling tube 51
Middle filling HFC-134a, cooling tube 51 is attached on iron core 2 and encloses circle around iron core 2, cooling tube 51 by low-voltage coil 4 and iron core 2 every
Open, neck 51a is offered on the outside tube wall of cooling tube 51, neck 51a shape is adapted with the shape of low-voltage coil 4, low
Line ball circle 4, which can be embedded in neck 51a, to be formed low-voltage coil 4 and cooling tube 51 to be integrally around on iron core 2.
In embodiment, several neck 51a have been arranged side by side on cooling tube 51.
In embodiment, cooling tube 51 is wound between the pipeline portions on iron core 2, adjacent turn and is brought into close contact.
In embodiment, cooling tube 51 is insulating heat-conductive pipe.
In embodiment, low-voltage coil 4 uses flat type copper wire.
In embodiment, insulating barrier 6 is provided between high-tension coil 3 and low-voltage coil 4.
In embodiment, the section of neck 51a aperture position is slightly smaller than the cross section of low-voltage coil 4, when low-voltage coil 4 is embedded in
During neck 51a, low-voltage coil 4 is interference fitted with cooling tube 51.
In embodiment, support 7 is provided with testing transformer housing 1, iron core 2 is fixed on testing transformer shell by support
In body 1.
The application method of the present invention is as follows：
Contact close first by the coiling on iron core 2 of cooling tube 51, between the adjacent turn of cooling tube 51 when testing transformer is installed,
Then low-voltage coil 4 is embedded in the neck 51a of cooling tube 51, wound after low pressure winding, then lay outside low pressure winding insulation
Layer 6, then on insulating barrier 6 with iron core 2 for axle coiling high pressure winding, after transformer coli winding, in testing transformer housing 1
In be filled with insulating oil.When testing transformer is operated, air compressor machine is operated, and the HFC-134a in cooling tube 51 is circulated, and is cooled down
Pipe 51 is continuously low pressure winding cooling.HFC-134a realizes cooling at air compressor machine.
It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Scope.
Claims (6)
1. the oil immersed type testing transformer with cooling cycle structure, including testing transformer housing (1), described experiment transformation
Cored (2), high-tension coil (3) and low are set in filling insulating oil in device housing (1), described testing transformer housing (1)
Line ball circle (4), described high-tension coil (3) and low-voltage coil (4) is coaxially disposed on iron core (2), described high-tension coil (3)
It is outside positioned at low-voltage coil (4), it is characterized in that：Oil immersed type testing transformer also includes cooling cycle structure (5), described cooling
Loop structure (5) includes filling HFC-134a in cooling tube (51) and air compressor machine (52), described cooling tube (51), described
Cooling tube (51) is attached on iron core (2) and encloses circle around iron core (2), and described cooling tube (51) is by low-voltage coil (4) and iron core (2)
Separate, offer neck (51a) on the outside tube wall of described cooling tube (51), the shape and low pressure of described neck (51a)
The shape of coil (4) is adapted, and described low-voltage coil (4), which can be embedded in neck (51a), makes low-voltage coil (4) and cooling tube
(51) formed and be integrally around on iron core (2)；Several necks (51a) have been arranged side by side on described cooling tube (51)；Described card
The section of the aperture position of groove (51a) is slightly smaller than low-voltage coil (4) cross section, as embedded neck (51a) of low-voltage coil (4),
Described low-voltage coil (4) is interference fitted with cooling tube (51).
2. the oil immersed type testing transformer according to claim 1 with cooling cycle structure, it is characterized in that：Described is cold
But pipe (51) is wound between the pipeline portions on iron core (2), adjacent turn and is brought into close contact.
3. the oil immersed type testing transformer according to claim 2 with cooling cycle structure, it is characterized in that：Described is cold
But pipe (51) is insulating heat-conductive pipe.
4. the oil immersed type testing transformer according to claim 3 with cooling cycle structure, it is characterized in that：Described is low
Line ball circle (4) uses flat type copper wire.
5. the oil immersed type testing transformer according to claim 4 with cooling cycle structure, it is characterized in that：Described height
Insulating barrier (6) is provided between line ball circle (3) and low-voltage coil (4).
6. the oil immersed type testing transformer according to claim 5 with cooling cycle structure, it is characterized in that：Described examination
Test in transformer shell (1) and be provided with support (7), described iron core (2) is fixed on testing transformer housing (1) by support
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071734.8A CN105489359B (en) | 2016-02-02 | 2016-02-02 | Oil immersed type testing transformer with cooling cycle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071734.8A CN105489359B (en) | 2016-02-02 | 2016-02-02 | Oil immersed type testing transformer with cooling cycle structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105489359A CN105489359A (en) | 2016-04-13 |
| CN105489359B true CN105489359B (en) | 2017-08-01 |
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ID=55676284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610071734.8A Active CN105489359B (en) | 2016-02-02 | 2016-02-02 | Oil immersed type testing transformer with cooling cycle structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN105489359B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170560A (en) * | 2017-07-20 | 2017-09-15 | 银川欣安瑞电气有限公司 | High-frequency and high-voltage water cooling electric discharge transformer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2239654Y (en) * | 1995-04-26 | 1996-11-06 | 四川省内江变压器厂 | Dry transformer cooled by thermal pipe |
| JP4435524B2 (en) * | 2003-09-12 | 2010-03-17 | 株式会社 正和 | Manufacturing method of cooling plate |
| KR20050060619A (en) * | 2003-12-17 | 2005-06-22 | 주식회사 대우일렉트로닉스 | Evaporator united with heat line in kimchi refrigerator |
| CN103456464A (en) * | 2013-10-09 | 2013-12-18 | 贾继莹 | Transformer cooling device |
| CN203871141U (en) * | 2014-04-01 | 2014-10-08 | 上海东普电器制造有限公司 | Double-water-cooling high-frequency single-phase transformer |
| CN204178874U (en) * | 2014-08-28 | 2015-02-25 | 广东狮能电气股份有限公司 | A kind of oil-filled transformer with hydrologic cycle cooling system |
| CN205542295U (en) * | 2016-02-02 | 2016-08-31 | 周建平 | Oily formula testing transformer with cooling structure |
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2016
- 2016-02-02 CN CN201610071734.8A patent/CN105489359B/en active Active
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| Publication number | Publication date |
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| CN105489359A (en) | 2016-04-13 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Oil immersed test transformer with cooling circulation structure Effective date of registration: 20220412 Granted publication date: 20170801 Pledgee: Yangzhou Branch of Bank of Jiangsu Co.,Ltd. Pledgor: JIANGSU SHENGHUA ELECTRIC Co.,Ltd. Registration number: Y2022980004132 |
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