CN205645447U - Testing transformer with cooling coil - Google Patents
Testing transformer with cooling coil Download PDFInfo
- Publication number
- CN205645447U CN205645447U CN201620103321.9U CN201620103321U CN205645447U CN 205645447 U CN205645447 U CN 205645447U CN 201620103321 U CN201620103321 U CN 201620103321U CN 205645447 U CN205645447 U CN 205645447U
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- coil
- cooling
- low
- testing transformer
- voltage coil
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Coils Of Transformers For General Uses (AREA)
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Abstract
The utility model discloses a testing transformer with cooling coil, including electrically conductive refrigeration cycle structure, electrically conductive refrigeration cycle structure includes the connecting pipe, the wire section, synthesize the pipe, separately cooling but manages, cross valve and refrigeration plant, separately cooling but manages and enclose the circle outside low voltage coil, the outer tube draw -in groove has been seted up on the inboard pipe wall that separately cooling but managed, outer tube draw -in groove card is on low voltage coil, but manage low voltage coil and separately cooling fixedly mutually, the connecting pipe, the wire section, synthesize the pipe, separately cooling but manages to insert respectively and realizes interconnect in the cross valve, wire section one end is connected with low -voltage connector, the other end in the cross valve with synthesize the union coupling, refrigeration plant is connected to the connecting pipe, low voltage coil is the cavity coil, it is inside to be provided with cavity in the coil, low voltage coil, synthesize pipe and connecting pipe and constitute a closed pipeline jointly, under refrigeration plant's effect, this closure pipeline mesocycle flow has the cooling insulating gas. The utility model has the advantages of the cooling effect is good, have dual heat dissipation function, simple structure.
Description
Technical field
This utility model belongs to testing transformer technical field, relates to the chiller of dry-type transformer, a kind of testing transformer with cooling coil.
Background technology
Testing transformer, refers to provide high-tension transformator for ac voltage withstanding test.It is characterized in that output voltage is high, capacity is less, Transformer Short Circuit Impedance is very big, no-load voltage ratio is the biggest.
Owing to testing transformer needs to use in testing ground, it is necessary to structure compact to design, on the premise of meeting capacity of experiment, reduce volume, it is simple to transport and in-site installation as far as possible.For testing transformer this when working long hours coil heating amount big, coil easily burns, and causes testing transformer to damage.
The heat operationally produced for guarantee test transformator does not affect normally working of transformator, just need to increase cooling system on the transformer.Water cooling mode is one of type of cooling that transformator is the most general in the market, configure water-cooling apparatus the most on the transformer, this kind of mode is typically all and realizes with by the primary of cincture on iron core or the water circulation outside secondary hollow spool, water-cooling apparatus is placed on the outside of coil, the mode of this Local cooling can only cool down the temperature on surface, can not cool down the temperature of inside, the heat exchange area between chiller and coil is less, it is impossible to realize good cooling effect.
Utility model content
Technical problem to be solved in the utility model is for the above-mentioned state of the art, and provides a kind of good cooling results, has the testing transformer with cooling coil of double-radiation function function, simple in construction.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is:
nullA kind of testing transformer with cooling coil，Including testing transformer housing，Insulating gas is filled in testing transformer housing，It is provided with iron core in testing transformer housing、High-tension coil and low-voltage coil，High-tension coil and low-voltage coil are coaxially disposed on iron core，High-tension coil is positioned at outside low-voltage coil，Wherein: cooling loop construction also includes conduction cooling cycle structure，Conduction cooling cycle structure includes connecting tube、Conducting line segment、Integrated pipe、Outer cooling tube、Cross valve and refrigeration plant，Outer cooling tube is at the outer gusset circle of low-voltage coil，Outer tube draw-in groove is offered on the inner side tube wall of outer cooling tube，Outer tube draw-in groove is stuck on low-voltage coil，Low-voltage coil is fixed with outer cooling tube，Connecting tube、Conducting line segment、Integrated pipe、Outer cooling tube is respectively connected in cross valve realize being connected with each other，Conducting line segment one end is connected with low-pressure connector，The other end is connected with integrated pipe in cross valve，Connecting tube connects refrigeration plant，Low-voltage coil is hollow coil，It is internally provided with coil cavity，Low-voltage coil、Integrated pipe and connecting tube collectively constitute a Guan Bi pipeline，Under the effect of refrigeration plant，This Guan Bi pipeline has circulated cooling insulating gas，Conducting line segment and integrated pipe are conductor，Outer cooling tube and connecting tube are insulator.
For optimizing technique scheme, the concrete measure taked also includes:
Above-mentioned cooling insulating gas is air.
Filling insulating gas in above-mentioned testing transformer housing is sulfur hexafluoride.
Above-mentioned low-voltage coil uses flat type copper wire.
Being provided with insulating barrier between above-mentioned high-tension coil and low-voltage coil, when fitting tightly between outer cooling tube adjacent turn, outer cooling tube substitutes insulating barrier.
Being provided with support in above-mentioned testing transformer housing, iron core is fixed in testing transformer housing by support.
Above-mentioned cross valve is positioned in testing transformer housing.
Above-mentioned integrated pipe and the material of conducting line segment are copper.
The cross section of above-mentioned outer tube draw-in groove is slightly smaller than low-voltage coil cross section, when low-voltage coil embeds in outer tube draw-in groove, and low-voltage coil and outer cooling tube interference fit.
Compared with prior art, this utility model have employed two kinds of different heat dissipation and lowers the temperature coil inside, one is directly to offer cavity in low-voltage coil, cooling gas is directly filled with in low-voltage coil, to low-voltage coil from internal cooling, another kind is to be arranged between low-voltage coil and high-tension coil by cooling tube, lowers the temperature low-voltage coil from outside.Solve the problem being positioned at the low-voltage coil heat radiation difficulty inside transformator.When fitting tightly between outer cooling tube adjacent turn, outer cooling tube can use directly as the insulating barrier between high and low pressure coil, simplifies transformer device structure, and does not affect the insulating properties of transformator.Owing to low-voltage coil is charged, can not be drawn connection air compressor machine, therefore, this utility model devises cross valve, each pipeline connects at this, wherein conducting line segment and integrated pipe are conductive structures, its circuit structure being responsible for connecting low-voltage coil, and connecting tube is insulation system, it is for connecting the refrigeration plant of outside, low-voltage coil, connecting tube and integrated pipe form a complete Guan Bi pipeline, circulate Cryogenic air, lower the temperature low-voltage coil in Guan Bi pipeline.In order to prevent electric leakage, this utility model is provided with current sensing means at two in connecting tube, at one, the probe of current sensing means is inserted in connecting tube, probe at another is inserted in outer cooling tube, at two, current sensing means has at one and measures electric current, then send warning, and the connection of break line section and low-pressure connector when electric current is greater than predetermined threshold value.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model testing transformer housing；
Fig. 2 is the schematic diagram of transformer coli winding；
Fig. 3 is low-voltage coil and the schematic diagram of integrated pipe connection；
Fig. 4 is the structural representation of cross valve；
Fig. 5 is the schematic diagram that low-voltage coil is fixing with outer cooling tube.
Reference therein is: testing transformer housing 1, iron core 2, high-tension coil 3, low-voltage coil 4, coil cavity 41, conduction cooling cycle structure 5, connecting tube 51, conducting line segment 52, integrated pipe 53, outer cooling tube 54, outer tube draw-in groove 54a, cross valve 55, refrigeration plant 56, insulating barrier 6, support 7.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
nullA kind of testing transformer with cooling coil of the present utility model，Including testing transformer housing 1，Insulating gas is filled in testing transformer housing 1，Iron core 2 it is provided with in testing transformer housing 1、High-tension coil 3 and low-voltage coil 4，High-tension coil 3 and low-voltage coil 4 are coaxially disposed on iron core 2，It is outside that high-tension coil 3 is positioned at low-voltage coil 4，Wherein: cooling loop construction also includes conduction cooling cycle structure 5，Conduction cooling cycle structure 5 includes connecting tube 51、Conducting line segment 52、Integrated pipe 53、Outer cooling tube 54、Cross valve 55 and refrigeration plant 56，Outer cooling tube 54 is at low-voltage coil 4 outer gusset circle，Outer tube draw-in groove 54a is offered on the inner side tube wall of outer cooling tube 54，Outer tube draw-in groove 54a is stuck on low-voltage coil 4，Low-voltage coil 4 is fixed with outer cooling tube 54，Connecting tube 51、Conducting line segment 52、Integrated pipe 53、Outer cooling tube 54 is respectively connected in cross valve 55 realize being connected with each other，Conducting line segment 52 one end is connected with low-pressure connector，The other end is connected with integrated pipe 53 in cross valve 55，Connecting tube 51 connects refrigeration plant 56，Low-voltage coil 4 is hollow coil，It is internally provided with coil cavity 41，Low-voltage coil 4、Integrated pipe 53 and connecting tube 51 collectively constitute a Guan Bi pipeline，Under the effect of refrigeration plant 56，This Guan Bi pipeline has circulated cooling insulating gas，Conducting line segment 52 and integrated pipe 53 are conductor，Outer cooling tube 54 and connecting tube 51 are insulator.
In embodiment, cooling insulating gas is air.
In embodiment, filling insulating gas in testing transformer housing 1 is sulfur hexafluoride.Sulfur fluoride has the arc extinction performance of good electrical insulation properties and excellence.Its electric strength is 2.5 times of nitrogen under same pressure, and breakdown voltage is 2.5 times of air, and arc extinguishing ability is 100 times of air, is a kind of supertension insulating dielectric materials of new generation being better than between air and oil.
In embodiment, low-voltage coil 4 uses flat type copper wire.
In embodiment, being provided with insulating barrier 6 between high-tension coil 3 and low-voltage coil 4, when fitting tightly between outer cooling tube 54 adjacent turn, outer cooling tube 54 substitutes insulating barrier 6.
In embodiment, being provided with support 7 in testing transformer housing 1, iron core 2 is fixed in testing transformer housing 1 by support.
In embodiment, cross valve 55 is positioned in testing transformer housing 1.
In embodiment, the material of integrated pipe 53 and conducting line segment 52 is copper.
In embodiment, the cross section of outer tube draw-in groove 54a is slightly smaller than low-voltage coil 4 cross section, when low-voltage coil 4 embeds in outer tube draw-in groove 54a, and low-voltage coil 4 and outer cooling tube 54 interference fit.
This utility model directly offers cavity in low-voltage coil 4, cooling gas is directly filled with in low-voltage coil 4 lowers the temperature, during installation test transformator, low-voltage coil 4 is embedded in the outer tube draw-in groove 54a of outer cooling tube 54, coil is made to be integrally forming with outer cooling tube 54, coiling low pressure winding on iron core 2 the most together, after winding low pressure winding, insulating barrier 6 is laid again outside low pressure winding, then with iron core 2 for axle coiling high pressure winding on insulating barrier 6, after transformer coli winding, connecting tube 51 is installed, conducting line segment 52 and integrated pipe 53, then each pipeline is connected with cross valve 55, ensure that each pipeline is completely embedded, especially conducting line segment 52 and integrated pipe 53 must good contacts.After installing, in testing transformer housing 1, it is filled with insulating gas, when testing transformer operates, circulating cooling gas is lowered the temperature by refrigeration plant 56, and make gas circulating flow, gas flow through the coil cavity 41 of outer cooling tube 54 or low-voltage coil 4, to low pressure winding continued down.
This utility model is provided with current sensing means at two in connecting tube, during at one, the probe of current sensing means is inserted in connecting tube 51, probe at another is inserted in outer cooling tube 54, at two, current sensing means has at one and measures electric current, then send warning, and the connection of break line section 52 and low-pressure connector when electric current is greater than predetermined threshold value.
Below being only preferred implementation of the present utility model, protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, should be regarded as protection domain of the present utility model.
Claims (9)
- null1. a testing transformer with cooling coil，Including testing transformer housing (1)，Insulating gas is filled in described testing transformer housing (1)，It is provided with iron core (2) in described testing transformer housing (1)、High-tension coil (3) and low-voltage coil (4)，Described high-tension coil (3) and low-voltage coil (4) are coaxially disposed on iron core (2)，It is outside that described high-tension coil (3) is positioned at low-voltage coil (4)，It is characterized in that: cooling loop construction also includes conduction cooling cycle structure (5)，Described conduction cooling cycle structure (5) includes connecting tube (51)、Conducting line segment (52)、Integrated pipe (53)、Outer cooling tube (54)、Cross valve (55) and refrigeration plant (56)，Described outer cooling tube (54) is at low-voltage coil (4) outer gusset circle，Outer tube draw-in groove (54a) is offered on the inner side tube wall of described outer cooling tube (54)，Described outer tube draw-in groove (54a) is stuck on low-voltage coil (4)，Low-voltage coil (4) is fixed with outer cooling tube (54)，Described connecting tube (51)、Conducting line segment (52)、Integrated pipe (53)、Outer cooling tube (54) is respectively connected in cross valve (55) realize being connected with each other，Described conducting line segment (52) one end is connected with low-pressure connector，The other end is connected with integrated pipe (53) in cross valve (55)，Described connecting tube (51) connects refrigeration plant (56)，Described low-voltage coil (4) is hollow coil，It is internally provided with coil cavity (41)，Described low-voltage coil (4)、Integrated pipe (53) and connecting tube (51) collectively constitute a Guan Bi pipeline，Under the effect of refrigeration plant (56)，This Guan Bi pipeline has circulated cooling insulating gas，Described conducting line segment (52) and integrated pipe (53) are conductor，Described outer cooling tube (54) and connecting tube (51) are insulator.
- A kind of testing transformer with cooling coil the most according to claim 1, is characterized in that: cooling insulating gas is air.
- A kind of testing transformer with cooling coil the most according to claim 2, is characterized in that: filling insulating gas in described testing transformer housing (1) is sulfur hexafluoride.
- A kind of testing transformer with cooling coil the most according to claim 3, is characterized in that: described low-voltage coil (4) uses flat type copper wire.
- A kind of testing transformer with cooling coil the most according to claim 4, is characterized in that: be provided with insulating barrier (6) between described high-tension coil (3) and low-voltage coil (4).
- A kind of testing transformer with cooling coil the most according to claim 5, it is characterized in that: be provided with support (7) in described testing transformer housing (1), described iron core (2) is fixed in testing transformer housing (1) by support.
- A kind of testing transformer with cooling coil the most according to claim 6, is characterized in that: described cross valve (55) is positioned in testing transformer housing (1).
- A kind of testing transformer with cooling coil the most according to claim 7, is characterized in that: described integrated pipe (53) and the material of conducting line segment (52) are copper.
- A kind of testing transformer with cooling coil the most according to claim 8, it is characterized in that: the cross section of described outer tube draw-in groove (54a) is slightly smaller than low-voltage coil (4) cross section, when low-voltage coil (4) embeds in outer tube draw-in groove (54a), low-voltage coil (4) and outer cooling tube (54) interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103321.9U CN205645447U (en) | 2016-02-02 | 2016-02-02 | Testing transformer with cooling coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103321.9U CN205645447U (en) | 2016-02-02 | 2016-02-02 | Testing transformer with cooling coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205645447U true CN205645447U (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103321.9U Expired - Fee Related CN205645447U (en) | 2016-02-02 | 2016-02-02 | Testing transformer with cooling coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205645447U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513763A (en) * | 2016-02-02 | 2016-04-20 | 江苏盛华电气有限公司 | Transformer cooling coil structure |
| CN107068338A (en) * | 2017-02-22 | 2017-08-18 | 江苏凡高电气有限公司 | A kind of inner side circulating cooling epoxy cast dry transformer |
| CN109767896A (en) * | 2019-03-06 | 2019-05-17 | 上海置信电气非晶有限公司 | Utilize the low loss transformer of skin effect |
-
2016
- 2016-02-02 CN CN201620103321.9U patent/CN205645447U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513763A (en) * | 2016-02-02 | 2016-04-20 | 江苏盛华电气有限公司 | Transformer cooling coil structure |
| CN105513763B (en) * | 2016-02-02 | 2017-10-20 | 江苏盛华电气有限公司 | Transformer Cooling loop construction |
| CN107068338A (en) * | 2017-02-22 | 2017-08-18 | 江苏凡高电气有限公司 | A kind of inner side circulating cooling epoxy cast dry transformer |
| CN109767896A (en) * | 2019-03-06 | 2019-05-17 | 上海置信电气非晶有限公司 | Utilize the low loss transformer of skin effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20200202 |