CN203882785U - Novel dry type transformer - Google Patents
Novel dry type transformer Download PDFInfo
- Publication number
- CN203882785U CN203882785U CN201420314963.4U CN201420314963U CN203882785U CN 203882785 U CN203882785 U CN 203882785U CN 201420314963 U CN201420314963 U CN 201420314963U CN 203882785 U CN203882785 U CN 203882785U
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Abstract
The utility model discloses a novel dry type transformer, and relates to the technical field of power transmission and transformation. The novel dry type transformer comprises a support, an iron core, a high-voltage winding and a low-voltage winding, wherein the support is provided with a low-voltage end insulator wrapped in the iron core and the low-voltage winding, and a high-voltage end insulator wrapped in the high-voltage winding, a gap is formed between the high-voltage insulator and the low-voltage insulator, chamfers are formed in the upper end and the lower end of the face, towards the low-voltage end insulator, of the high-voltage end insulator respectively, vertical air channels are further formed in the high-voltage end insulator, insulating air guide plates are arranged between the bottom of the high-voltage end insulator and the support, a plurality of cold water pipes matched with the vertical air channels are arranged on the support, and axial flow fans matched with the vertical air channels are arranged blow the cold water pipes and in the insulating air guide plates. Compared with the prior art, the novel dry type transformer has the advantages that end field intensity of the high-voltage end insulator can be reduced, and insulation failure caused by a breakdown at the end of a high-voltage end insulator is prevented; meanwhile, a heat dissipation device is arranged, and overheating of the transformer in the operation process is prevented.
Description
Technical field
The utility model relates to T & D Technology field, relates in particular to a kind of dry-type transformer.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, it have a public iron core and with its crosslinked several windings, and locus between them is constant.In the time that some windings are accepted AC energy from power supply, by inductance magnetisation, magnetic electromagnetic induction principle induced electricity changes voltage, in remaining winding with same frequency, different voltage transmission AC energy.Transformer can be divided into oil-filled transformer and dry-type transformer by the type of cooling.Dry-type transformer is widely used in numerous occasions, and for example, airport, hospital or market etc. need the place of a large amount of power supplies, and generally speaking, dry-type transformer is double-winding structure, and one group of high and low pressure coil is enclosed within on same iron core.For the dry-type distribution transformer of high voltage occasion, high-tension coil and low-voltage coil are the independent members being separated from each other, make to leave space between high-tension coil and low-voltage coil, this space is mainly in order to ensure that having enough distances between high-tension coil and low-voltage coil ensures that enough electrical strengths and the convenient cross-ventilation that relies on carry out cooling.In actual use, between high-tension coil and low-voltage coil, can produce an electric field, this electric field can become an asymmetrical non-uniform electric field in the end of high-tension coil and low-voltage coil, power line is through the dielectric on air and high-tension coil and low-voltage coil, on the interface of air and dielectric, there is the tangential component of electric field, that is to say, have the tangential component of electric field along the dielectric surface of high-tension coil end or corner, this is more typically to slide sudden strain of a muscle type structure.In the time containing impurity in air dielectric, under the effect of electric field, by obtaining energy and moving along the tangential direction of electric field, form a gliding spark discharge passage, leave permanent vestige on dielectric surface.Electric field herein will distort, and electric field distortion has aggravated frequency and duration that this phenomenon occurs, until insulation system destroys completely, finally loses its insulation property.For fear of this phenomenon, need to design the dielectric structure on transformer, to avoid end field intensity too high, easily cause the phenomenon that dielectric is breakdown.
Summary of the invention
The utility model is for deficiency of the prior art, a kind of novel dry transformer is provided, can reduce the end field intensity of high-pressure side insulator, prevent the breakdown failure of insulation situation causing in high-pressure side insulator end, also be provided with heat abstractor simultaneously, prevent the superheating phenomenon that transformer produces in the time of operation.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of novel dry transformer, comprise support, iron core, high pressure winding and low pressure winding, on described support, be provided with the low-pressure end insulator that is enclosed with described iron core and described low pressure winding and the high-pressure side insulator that is enclosed with described high pressure winding, described high-pressure side insulator is enclosed within outside described low-pressure end insulator, between described high voltage insulator and described low-voltage insulation body, there is space, described high-pressure side insulator is provided with chamfering towards the upper and lower two ends of one side of described low-pressure end insulator, on described high-pressure side insulator, be also provided with the vertical air flue that several match with described high pressure winding, between described high-pressure side insulator bottom and described support, be provided with insulation wind deflector, described vertical air flue is in described insulation wind deflector, on described support, be provided with the cold water pipe that several match with described vertical air flue through described insulation wind deflector, the axial flow blower that described cold water pipe below is provided with several matches in described insulation wind deflector and with described vertical air flue.Arrange like this, in the time that transformer is worked, between high pressure winding and low pressure winding, can produce electric field, this electric field in the end of high-tension coil and low-voltage coil namely the end of high-pressure side insulator and low-pressure end insulator can become an asymmetrical non-uniform electric field, and can produce gliding spark discharge passage in high-pressure side insulator end and damage high-pressure side insulator end.Be provided with chamfering at high-pressure side insulator towards the upper and lower two ends of one side of described low-pressure end insulator, the angle of this chamfering and horizontal plane is at 60 degree between 75 degree for this reason, and concrete angle needs the real work power of transformer to determine.Can allow power line pass through high-pressure side insulator end by this chamfering, avoid high-pressure side insulator end to block power line, cause electric discharge phenomena.Moreover, be also provided with several vertical air flues on high-pressure side insulator, well-known, all can there is short of electricity phenomenon in every China in summer most areas, and transformer all needs to operate at full capacity, and under this operating state, transformer will be overheated.For this reason, the insulation wind deflector, cold water pipe and the axial flow blower that are provided with vertical air flue and match with vertical air flue, can allow the high pressure winding in high-pressure side insulator dispel the heat fast, and transformer can be operated at full capacity always.
In technique scheme, preferred, described cold water pipe extend in described vertical air flue, and described cold water pipe bending setting in described vertical air flue.Arrange like this, cold water pipe extend in vertical air flue and bending setting, and the wind that axial flow blower blows in vertical air flue becomes cold wind after cold water pipe, can be more efficient vertically carrying out heat exchange in air flue, high pressure winding is lowered the temperature.
In technique scheme, preferred, described insulation wind deflector is identical with described chamfering at described the bottom angled setting of high-pressure side insulator and angle of inclination.Like this arrange, arrange insulation wind deflector can ensure axial flow blower wind to vertical air flue, the wind deflector that simultaneously insulate is also obliquely installed, and prevents from blocking power line path, high-pressure side insulator end.
Compared with prior art, the beneficial effects of the utility model are: the end field intensity that can reduce high-pressure side insulator, prevent the breakdown failure of insulation situation causing in high-pressure side insulator end, be also provided with heat abstractor simultaneously, prevent the superheating phenomenon that transformer produces in the time of operation.
Brief description of the drawings
Fig. 1 is the utility model schematic cross-section.
Fig. 2 is the utility model high-pressure side insulator schematic top plan view.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of novel dry transformer, comprise support 1, iron core 2, high pressure winding 4 and low pressure winding 3, on support 1, be provided with the low-pressure end insulator 11 that is enclosed with iron core 2 and low pressure winding 3 and the high-pressure side insulator 12 that is enclosed with high pressure winding 4, high-pressure side insulator 12 is enclosed within outside low-pressure end insulator 11, between high voltage insulator 12 and low-voltage insulation body 11, there is space, high-pressure side insulator 12 is provided with chamfering 6 towards the upper and lower two ends of one side of low-pressure end insulator 3, on high-pressure side insulator 12, be also provided with the vertical air flue 51 that several match with high pressure winding 4, between high-pressure side insulator 12 bottoms and support 1, be provided with insulation wind deflector 7, insulation wind deflector 7 is identical with chamfering 6 in the 12 bottom angled settings of high-pressure side insulator and angle of inclination.Vertically air flue 51, in insulation wind deflector 7, is provided with several through insulation wind deflector 7 and extend into the cold water pipe 8 in vertical air flue 51 on support 1, and cold water pipe 8 is interior bending setting of vertical air flue 51.In insulation wind deflector 7, be also provided with the axial flow blower 9 of air port to vertical air flue 51.
In the time that transformer is worked, between high pressure winding 4 and low pressure winding 3, can produce electric field, this electric field in the end of high pressure winding 4 and low pressure winding 3 namely the end of high-pressure side insulator 12 and low-pressure end insulator 11 can become an asymmetrical non-uniform electric field, and can produce gliding spark discharge passages in high-pressure side insulator 12 ends and damage high-pressure side insulator 12 ends.Be provided with chamfering 6 at high-pressure side insulator 12 towards the upper and lower two ends of one side of described low-pressure end insulator 11, the angle of this chamfering 6 and horizontal plane is at 60 degree between 75 degree for this reason, and concrete angle needs the real work power of transformer to determine.Can allow power line pass through high-pressure side insulator 12 ends by this chamfering 6, avoid high-pressure side insulator 12 ends to block power line, cause and put a phenomenon.On support 1, be provided with insulation wind deflector 7, in insulation wind deflector 7, be provided with axial flow blower 9, vertical air flue 51 is aimed in axial flow blower 9 air ports, cold water pipe 8 extend in vertical air flue 4 and bending setting, the wind that axial flow blower 9 blows in vertical air flue 51 becomes cold wind after cold water pipe 8, can be more efficient vertically carrying out heat exchange in air flue 51, high pressure winding 4 is lowered the temperature.
Claims (3)
1. a novel dry transformer, comprise support (1), iron core (2), high pressure winding (4) and low pressure winding (3), on described support (1), be provided with the low-pressure end insulator (11) that is enclosed with described iron core (2) and described low pressure winding (3) and the high-pressure side insulator (12) that is enclosed with described high pressure winding (4), described high-pressure side insulator (12) is enclosed within outside described low-pressure end insulator (11), between described high-pressure side insulator (12) and described low-pressure end insulator (11), there is space, it is characterized by, described high-pressure side insulator (12) is provided with chamfering (6) towards the upper and lower two ends of one side of described low-pressure end insulator (11), on described high-pressure side insulator (12), be also provided with the vertical air flue (51) that several match with described high pressure winding (4), between described high-pressure side insulator (12) bottom and described support (1), be provided with insulation wind deflector (7), described vertical air flue (51) is in described insulation wind deflector (7), on described support (1), be provided with the cold water pipe (8) that several match with described vertical air flue (51) through described insulation wind deflector (7), the axial flow blower (9) that described cold water pipe (8) below is provided with several matches in described insulation wind deflector (7) and with described vertical air flue (51).
2. a kind of novel dry transformer according to claim 1, is characterized by, and described cold water pipe (8) extend in described vertical air flue (51), and described cold water pipe (8) bending setting in described vertical air flue (51).
3. a kind of novel dry transformer according to claim 1, is characterized by, and described insulation wind deflector (51) is identical with described chamfering (6) in described high-pressure side insulator (12) bottom angled setting and angle of inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314963.4U CN203882785U (en) | 2014-06-13 | 2014-06-13 | Novel dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314963.4U CN203882785U (en) | 2014-06-13 | 2014-06-13 | Novel dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882785U true CN203882785U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420314963.4U Expired - Fee Related CN203882785U (en) | 2014-06-13 | 2014-06-13 | Novel dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319069A (en) * | 2014-10-28 | 2015-01-28 | 成都峰达科技有限公司 | Temperature control device of transformer |
| CN112867336A (en) * | 2019-11-12 | 2021-05-28 | 成都星空年代科技有限公司 | Satellite signal main cabinet with good heat dissipation performance on train |
-
2014
- 2014-06-13 CN CN201420314963.4U patent/CN203882785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319069A (en) * | 2014-10-28 | 2015-01-28 | 成都峰达科技有限公司 | Temperature control device of transformer |
| CN112867336A (en) * | 2019-11-12 | 2021-05-28 | 成都星空年代科技有限公司 | Satellite signal main cabinet with good heat dissipation performance on train |
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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: 20141015 Termination date: 20170613 |