CN105513757B - A kind of water cooling dry testing transformer - Google Patents
A kind of water cooling dry testing transformer Download PDFInfo
- Publication number
- CN105513757B CN105513757B CN201610071736.7A CN201610071736A CN105513757B CN 105513757 B CN105513757 B CN 105513757B CN 201610071736 A CN201610071736 A CN 201610071736A CN 105513757 B CN105513757 B CN 105513757B
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- China
- Prior art keywords
- low
- cooling water
- water pipe
- voltage coil
- cooling
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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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water 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
- H01F27/2847—Sheets; Strips
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a kind of water cooling dry testing transformer, including testing transformer housing, set in testing transformer housing cored, high-tension coil and low-voltage coil, high-tension coil and low-voltage coil are coaxially disposed on iron core, high-tension coil is located at outside low-voltage coil, also include water cooling plant, water cooling plant includes cooling water pipe, cooling water tank and the cooling water pump on cooling water pipe, the water inlet of cooling water pipe is connected with delivery port with cooling water tank, the middle part of cooling water pipe is at least contacted with low-voltage coil, cooling water pipe and low-voltage coil contact portion are in the shape of a spiral, its number of turn matches with the low-voltage coil number of turn, cooling water pipe and low-voltage coil wound core side by side.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 a kind of water cooling
Dry testing transformer.
Background technology
Testing transformer, refers to and provides high-tension transformer for ac voltage withstanding experiment.It is characterized in output voltage height, capacity
Smaller, Transformer Short Circuit Impedance very 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
Novel water cooling dry testing transformer.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：
A kind of water cooling dry testing transformer, including testing transformer housing, set in testing transformer housing it is cored,
High-tension coil and low-voltage coil, high-tension coil and low-voltage coil are coaxially disposed on iron core, and high-tension coil is located at outside low-voltage coil
Portion, in addition to water cooling plant, water cooling plant include cooling water pipe, cooling water tank and the cooling water on cooling water pipe
Pump, the water inlet of cooling water pipe is connected with delivery port with cooling water tank, and the middle part of cooling water pipe is contacted with low-voltage coil, cooling
With low-voltage coil contact portion in the shape of a spiral, its number of turn matches water pipe with the low-voltage coil number of turn, cooling water pipe and low-voltage coil
Wound core side by side.
For optimization above-mentioned technical proposal, the concrete measure taken also includes：
Above-mentioned cooling water pipe is insulating heat-conductive pipe, and the coolant used is pure water.
Above-mentioned low-voltage coil uses flat type copper wire.
Neck is offered on the tube wall of above-mentioned cooling water pipe, the shape of neck is adapted with the shape of low-voltage coil, low
Line ball circle, which can be embedded in neck, to be formed low-voltage coil and cooling water pipe to be integrally around on iron core.
Insulating barrier is provided between above-mentioned high-tension coil and low-voltage coil.
Above-mentioned neck is arranged at cooling water pipe towards the side of iron core, low-voltage coil be located at cooling water pipe and iron core it
Between, when being brought into close contact between cooling water pipe adjacent turn, cooling water pipe substitutes insulating barrier.
Filling insulating gas in above-mentioned testing transformer housing.
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 water pipe.
Compared with prior art, the present invention twines cooling water pipe and the mutual side-by-side contact of low-voltage coil again after forming one
Around iron core, the problem of low-voltage coil positioned at inner side radiates difficult is solved, is considerably increased between cooling device and coil
Heat exchange area, is greatly improved cooling radiating effect.For increase low-voltage coil and cooling water pipe connectivity robustness, the present invention
Neck is offered on the tube wall of cooling water pipe, low-voltage coil, which can be embedded in neck, makes low-voltage coil and cooling water pipe formation one
Body.Neck is located at cooling water pipe towards the side of iron core, if cooling water pipe turn-to-turn gapless and cooling water pipe have it is certain thick
Degree, can use directly as the insulating barrier between high and low pressure coil, simplify transformer device structure, and not influence the exhausted of transformer
Edge performance.
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 water pipe is wound on iron core；
Fig. 4 is schematic diagram of the cooling water pipe towards the side of iron core；
Fig. 5 is the schematic diagram that low-voltage coil is fixed on cooling water pipe.
Reference therein is：Testing transformer housing 1, iron core 2, high-tension coil 3, low-voltage coil 4, water cooling plant 5,
Cooling water pipe 51, neck 51a, cooling water tank 52, cooling water pump 53, insulating barrier 6.
Embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
In a kind of water cooling dry testing transformer of the present invention, including testing transformer housing 1, testing transformer housing 1
Cored 2, high-tension coil 3 and low-voltage coil 4 are set, and high-tension coil 3 and low-voltage coil 4 are coaxially disposed on iron core 2, high-voltage line
Circle 3 is located at outside low-voltage coil 4, in addition to water cooling plant 5, and water cooling plant 5 includes cooling water pipe 51, cooling water tank 52 and peace
Cooling water pump 53 on cooling water pipe 51, the water inlet of cooling water pipe 51 is connected with delivery port with cooling water tank 52, cold
But the middle part of water pipe 51 is contacted with low-voltage coil 4, it is characterized in that：Cooling water pipe 51 and the contact portion of low-voltage coil 4 in the shape of a spiral,
Its number of turn matches with the number of turn of low-voltage coil 4, cooling water pipe 51 and low-voltage coil 4 wound core 2 side by side.
In embodiment, cooling water pipe 51 is insulating heat-conductive pipe, and the coolant used is pure water.
In embodiment, low-voltage coil 4 uses flat type copper wire.
In embodiment, neck 51a, neck 51a shape and the shape of low-voltage coil 4 are offered on the tube wall of cooling water pipe 51
Shape is adapted, and low-voltage coil 4, which can be embedded in neck 51a, to be formed low-voltage coil 4 and cooling water pipe 51 to be integrally around on iron core 2.
In embodiment, insulating barrier 6 is provided between high-tension coil 3 and low-voltage coil 4.
In embodiment, neck 51a is arranged at cooling water pipe 51 towards the side of iron core 2, and low-voltage coil 4 is located at cooling water pipe
Between 51 and iron core 2, when being brought into close contact between the adjacent turn of cooling water pipe 51, cooling water pipe 51 substitutes insulating barrier 6.
In embodiment, filling insulating gas in testing transformer housing 1.
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 water pipe 51.
Low-voltage coil 4 is embedded in the neck 51a of cooling water pipe 51 when testing transformer is installed, makes coil and cooling water pipe
51 are integrally formed, then the coiling low pressure winding on iron core 2 together, wind after low pressure winding, then lay outside low pressure winding exhausted
Edge layer 6, then on insulating barrier 6 with iron core 2 for axle coiling high pressure winding, after transformer coli winding, in testing transformer shell
Insulating gas is filled with body 1, when testing transformer is operated, cooling water is pumped into cooling water pipe 51 by cooling water pump 53, is realized cold
But water circulation, cooling water pipe 51 is continuously low pressure winding cooling.The coolant that testing transformer of the present invention is used is pure water, examination
Filling insulating gas in transformer shell body is tested, using other insulating and cooling liquids and other dielectrics optionally can be filled.
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 (5)
1. in a kind of water cooling dry testing transformer, including testing transformer housing (1), described testing transformer housing (1)
Cored (2), high-tension coil (3) and low-voltage coil (4) are set, and described high-tension coil (3) and low-voltage coil (4) are in iron core
(2) it is coaxially disposed on, described high-tension coil (3) is located at low-voltage coil (4) outside, it is characterized in that：Also include water cooling plant
(5), described water cooling plant (5) includes cooling water pipe (51), cooling water tank (52) and on cooling water pipe (51)
Cooling water pump (53), the water inlet of described cooling water pipe (51) is connected with delivery port with cooling water tank (52), and described is cold
But the middle part of water pipe (51) is contacted with low-voltage coil (4), and described cooling water pipe (51) and low-voltage coil (4) contact portion is in spiral shell
Shape is revolved, its number of turn matches with low-voltage coil (4) number of turn, described cooling water pipe (51) surround iron side by side with low-voltage coil (4)
Offer neck (51a) on core (2), the tube wall of described cooling water pipe (51), the shape and low-voltage line of described neck (51a)
The shape of circle (4) is adapted, and described low-voltage coil (4), which can be embedded in neck (51a), makes low-voltage coil (4) and cooling water pipe
(51) formed and be integrally around on iron core (2), described neck (51a) is arranged at cooling water pipe (51) towards the side of iron core (2),
Described low-voltage coil (4) is located between cooling water pipe (51) and iron core (2), is closely pasted between cooling water pipe (51) adjacent turn
Close, cooling water pipe (51) is used directly as the insulating barrier between high and low pressure coil.
2. a kind of water cooling dry testing transformer according to claim 1, it is characterized in that：Described cooling water pipe (51) is
Insulating heat-conductive pipe, the coolant used is pure water.
3. a kind of water cooling dry testing transformer according to claim 2, it is characterized in that：Described low-voltage coil (4) is adopted
Use flat type copper wire.
4. a kind of water cooling dry testing transformer according to claim 3, it is characterized in that：Described testing transformer housing
(1) filling insulating gas in.
5. a kind of water cooling dry testing transformer according to claim 4, it is characterized in that：Described neck (51a's) opens
The section of mouth position is slightly smaller than low-voltage coil (4) cross section, as embedded neck (51a) of low-voltage coil (4), described low-voltage line
(4) are enclosed to be interference fitted with cooling water pipe (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071736.7A CN105513757B (en) | 2016-02-02 | 2016-02-02 | A kind of water cooling dry testing transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071736.7A CN105513757B (en) | 2016-02-02 | 2016-02-02 | A kind of water cooling dry testing transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513757A CN105513757A (en) | 2016-04-20 |
| CN105513757B true CN105513757B (en) | 2017-10-20 |
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ID=55721661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610071736.7A Active CN105513757B (en) | 2016-02-02 | 2016-02-02 | A kind of water cooling dry testing transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN105513757B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3780035A1 (en) * | 2019-08-14 | 2021-02-17 | ABB Schweiz AG | A non-liquid immersed transformer |
Family Cites Families (6)
| 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 |
| JPH10270259A (en) * | 1997-03-28 | 1998-10-09 | Nippon Kinzoku Co Ltd | Liquid-cooled reactor |
| KR20050060619A (en) * | 2003-12-17 | 2005-06-22 | 주식회사 대우일렉트로닉스 | Evaporator united with heat line in kimchi refrigerator |
| CN102982977B (en) * | 2012-12-20 | 2015-07-15 | 无锡市南方电器制造有限公司 | Secondary winding of resistance welding 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 |
| CN205542294U (en) * | 2016-02-02 | 2016-08-31 | 江苏盛华电气有限公司 | Water -cooling dry -type testing transformer device |
-
2016
- 2016-02-02 CN CN201610071736.7A patent/CN105513757B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3780035A1 (en) * | 2019-08-14 | 2021-02-17 | ABB Schweiz AG | A non-liquid immersed transformer |
| WO2021028514A1 (en) * | 2019-08-14 | 2021-02-18 | Abb Schweiz Ag | A non-liquid immersed transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105513757A (en) | 2016-04-20 |
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