CN205542295U - Oily formula testing transformer with cooling structure - Google Patents
Oily formula testing transformer with cooling structure Download PDFInfo
- Publication number
- CN205542295U CN205542295U CN201620103322.3U CN201620103322U CN205542295U CN 205542295 U CN205542295 U CN 205542295U CN 201620103322 U CN201620103322 U CN 201620103322U CN 205542295 U CN205542295 U CN 205542295U
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- testing transformer
- voltage coil
- cooling tube
- iron core
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Abstract
The utility model discloses an oily formula testing transformer with cooling structure, including the testing transformer casing, pack insulating oil in the testing transformer casing, be provided with iron core, high -pressure coil and low voltage coil in the testing transformer casing, high -pressure coil and low voltage coil be coaxial setting on the iron core, and high -pressure coil lies in low voltage coil outside, characterized by: oily formula testing transformer still includes the refrigeration cycle structure, including cooling tube and air compressor machine, fills the notes tetrafluoroethane in the cooling tube, and cooling tube subsides duplex winding iron core on the iron core encloses the circle, and the cooling tube separates low voltage coil with the iron core, seted up the draw -in groove on the outside pipe wall of cooling tube, the shape of draw -in groove and low voltage coil's shape looks adaptation, and low voltage coil makes low voltage coil and cooling tube form an organic whole around on the iron core in imbedding the draw -in groove. The utility model has the advantages of the cooling effect is good, novel structure.
Description
Technical field
This utility model belongs to testing transformer technical field, relates to the chiller of dry-type transformer, a kind of oil immersed type testing transformer with cooling structure.
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 the oil immersed type testing transformer with cooling structure of a kind of good cooling results, novel structure.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is:
A kind of oil immersed type testing transformer with cooling structure, including testing transformer housing, insulating oil is filled in testing transformer housing, arrange cored 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, it is characterized in that: oil immersed type testing transformer also includes cooling cycle structure, cooling cycle structure includes cooling tube and air compressor machine, cooling tube fills tetrafluoroethane, cooling tube is attached to enclose circle on iron core and around iron core, low-voltage coil is separated by cooling tube with iron core, draw-in groove is offered on the outside tube wall of cooling tube, the shape of draw-in groove is suitable with the shape of low-voltage coil, low-voltage coil can embed in draw-in groove and make low-voltage coil integrally be around on iron core with cooling tube formation.
For optimizing technique scheme, the concrete measure taked also includes:
Several draw-in groove it has been arranged side by side on above-mentioned cooling tube.
Above-mentioned cooling tube is wound on the pipeline portions on iron core, fits tightly between adjacent turn.
Above-mentioned cooling tube is insulating heat-conductive pipe.
Above-mentioned low-voltage coil uses flat type copper wire.
It is provided with insulating barrier between above-mentioned high-tension coil and low-voltage coil.
The cross section of the aperture position of above-mentioned draw-in groove is slightly smaller than low-voltage coil cross section, when low-voltage coil embeds draw-in groove, and low-voltage coil and cooling tube interference fit.
Being provided with support in 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 this utility model, low-voltage coil is wound on cooling tube, the problem solving the low-voltage coil heat radiation difficulty being positioned at inner side, in order to increase the contact area of low-voltage coil and cooling tube, this device offers draw-in groove on the tube wall of cooling tube, and low-voltage coil can embed in draw-in groove and make low-voltage coil form one with cooling tube.Considerably increase the heat exchange area between chiller and coil, cooling radiating effect is greatly improved.The coolant filled in cooling tube is tetrafluoroethane, has a good security performance, nonflammable, do not explode, nontoxic, nonirritant, non-corrosiveness.Use the coolant circulation that air compressor machine realizes in cooling tube.
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 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 cycle structure 5, cooling tube 51, draw-in groove 51a, air compressor machine 52, 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 oil immersed type testing transformer with cooling structure of the present utility model，Including testing transformer housing 1，Insulating oil 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，It is characterized in that: oil immersed type testing transformer also includes cooling cycle structure 5，Cooling cycle structure 5 includes cooling tube 51 and air compressor machine 52，Cooling tube 51 fills tetrafluoroethane，Cooling tube 51 is attached to enclose circle on iron core 2 and around iron core 2，Low-voltage coil 4 is separated by cooling tube 51 with iron core 2，Draw-in groove 51a is offered on the outside tube wall of cooling tube 51，The shape of draw-in groove 51a is suitable with the shape of low-voltage coil 4，Low-voltage coil 4 can embed and make low-voltage coil 4 and cooling tube 51 be formed in draw-in groove 51a to be integrally around on iron core 2.
In embodiment, cooling tube 51 is arranged side by side several draw-in groove 51a.
In embodiment, cooling tube 51 is wound on the pipeline portions on iron core 2, fits tightly between adjacent turn.
In embodiment, cooling tube 51 is insulating heat-conductive pipe.
In embodiment, low-voltage coil 4 uses flat type copper wire.
In embodiment, between high-tension coil 3 and low-voltage coil 4, it is provided with insulating barrier 6.
In embodiment, the cross section of the aperture position of draw-in groove 51a is slightly smaller than low-voltage coil 4 cross section, when low-voltage coil 4 embeds draw-in groove 51a, and low-voltage coil 4 and cooling tube 51 interference fit.
In embodiment, being provided with support 7 in testing transformer housing 1, iron core 2 is fixed in testing transformer housing 1 by support.
Using method of the present utility model is as follows:
First by cooling tube 51 coiling on iron core 2 during installation test transformator, between cooling tube 51 adjacent turn, contact is closely, then low-voltage coil 4 is embedded in the draw-in groove 51a of cooling tube 51, 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, in testing transformer housing 1, it is filled with insulating oil.When testing transformer operates, air compressor machine operates, and the tetrafluoroethane in cooling tube 51 circulates, and cooling tube 51 is continuously the cooling of low pressure winding.Tetrafluoroethane realizes cooling at air compressor machine.
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 (8)
- null1. an oil immersed type testing transformer with cooling structure，Including testing transformer housing (1)，Insulating oil 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: oil immersed type testing transformer also includes cooling cycle structure (5)，Described cooling cycle structure (5) includes cooling tube (51) and air compressor machine (52)，Described cooling tube (51) fills tetrafluoroethane，Described cooling tube (51) is attached to iron core (2) and above and encloses circle around iron core (2)，Low-voltage coil (4) is separated by described cooling tube (51) with iron core (2)，Draw-in groove (51a) is offered on the outside tube wall of described cooling tube (51)，The shape of described draw-in groove (51a) is suitable with the shape of low-voltage coil (4)，Described low-voltage coil (4) can embed and make low-voltage coil (4) integrally be around on iron core (2) with cooling tube (51) formation in draw-in groove (51a).
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 1, is characterized in that: be arranged side by side several draw-in groove (51a) on described cooling tube (51).
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 2, is characterized in that: described cooling tube (51) is wound on the pipeline portions on iron core (2), fits tightly between adjacent turn.
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 3, is characterized in that: described cooling tube (51) is insulating heat-conductive pipe.
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 4, is characterized in that: described low-voltage coil (4) uses flat type copper wire.
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 5, is characterized in that: be provided with insulating barrier (6) between described high-tension coil (3) and low-voltage coil (4).
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 6, it is characterized in that: the cross section of the aperture position of described draw-in groove (51a) is slightly smaller than low-voltage coil (4) cross section, when low-voltage coil (4) embeds draw-in groove (51a), described low-voltage coil (4) and cooling tube (51) interference fit.
- A kind of oil immersed type testing transformer with cooling structure the most according to claim 7, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103322.3U CN205542295U (en) | 2016-02-02 | 2016-02-02 | Oily formula testing transformer with cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103322.3U CN205542295U (en) | 2016-02-02 | 2016-02-02 | Oily formula testing transformer with cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542295U true CN205542295U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103322.3U Expired - Fee Related CN205542295U (en) | 2016-02-02 | 2016-02-02 | Oily formula testing transformer with cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489359A (en) * | 2016-02-02 | 2016-04-13 | 江苏盛华电气有限公司 | Oil-immersion-type testing transformer with cooling circulation structure |
-
2016
- 2016-02-02 CN CN201620103322.3U patent/CN205542295U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489359A (en) * | 2016-02-02 | 2016-04-13 | 江苏盛华电气有限公司 | Oil-immersion-type testing transformer with cooling circulation structure |
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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: 20160831 Termination date: 20200202 |