CN203351362U - Non-capacitance type dry type sleeve - Google Patents
Non-capacitance type dry type sleeve Download PDFInfo
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- CN203351362U CN203351362U CN 201320376108 CN201320376108U CN203351362U CN 203351362 U CN203351362 U CN 203351362U CN 201320376108 CN201320376108 CN 201320376108 CN 201320376108 U CN201320376108 U CN 201320376108U CN 203351362 U CN203351362 U CN 203351362U
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- conducting rod
- main body
- sleeve
- rod main
- dry sleeve
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Abstract
The utility model discloses a non-capacitance type dry type sleeve. The non-capacitance type dry type sleeve comprises an electricity conducting rod (1), and an insulator (2) installed on the electricity conducting rod (1) in a sleeved mode. The electricity conducting rod (1) comprises an electricity conducting rod body (11) and connectors (12) fixedly connected to the two ends of the electricity conducting rod body (11). The connectors (12) are made of materials different from the materials forming the electricity conducting rod body (11). The non-capacitance type dry type sleeve has the advantages of being used without oil, being low in cost, simple in structure, good in electrical conductivity, long in service life, high in safety, simple in processing technology, easy to operate and the like.
Description
Technical field
The utility model relates to the parts of transformer, and a kind of non-capacitive dry sleeve is provided especially.
Background technology
At present, in the manufacture of China 35kV, 10kV oil immersed power transformer, all adopt oil filled bushing as high pressure and low pressure leading-out terminal.Because oil filled bushing is usingd transformer oil as insulation and the carrier of radiator, in use need transformer that the transformer oil surface higher than sleeve pipe is provided, thereby use special-purpose oil conservator or tubular type oil level gauge to maintain pasta.In use, there is following shortcoming in existing oil filled bushing:
1) owing to using oil filled bushing, transformer oil surface just needs artificial the rising, on structure, adopts oil conservator or tubular type oil level gauge with " pushing down " pasta.This traditional structure had both been wasted some transformers oil, made again the product structure complexity, and cost increases.
2) because pasta raises, oil temperature and oil pressure thereof increase, and the product sealing difficulty further strengthens, and the hidden danger of product leakage of oil strengthens.
3) the transformer high-low-voltage leading-out terminal is oil-filled, is a kind of potential safety hazard of objective reality.According to Utilities Electric Co.'s statistics, the distribution transformer fire more than 80% is because the sleeve pipe leakage of oil causes.
4) processing technology complexity, cost is high.
Therefore, research and develop a kind ofly without oily dry sleeve, simplify the structure of sleeve pipe, reduce costs, eliminate safe hidden trouble, become people's problem demanding prompt solution.
the utility model content
Given this, the purpose of this utility model is to provide a kind of non-capacitive dry sleeve, at least to solve the complex structure that sleeve pipe exists in the past, cost of manufacture is high, easily leakage of oil, oil impregnate, the problems such as danger coefficient height, so as for 35KV, 10KV oil immersed power transformer provide one safe and reliable, move dry sleeve easy, simple in structure as leading-out terminal.
The non-capacitive dry sleeve that the utility model provides, this sleeve pipe comprises conducting rod 1, is sleeved on the insulator 2 on conducting rod 1, it is characterized in that: described conducting rod 1 comprises conducting rod main body 11 and is fixedly connected on the connector 12 at conducting rod main body 11 two ends; And the material of described connector 12 is different from the material of conducting rod main body 11.
Wherein, the thermal coefficient of expansion of the thermal coefficient of expansion of preferred described conducting rod main body 11 and insulator 2 differs 10 * 10
-6/ ℃ below; The hardness of described connector 12 is more than 100HV, and described insulator 2 is epoxy resin.
Non-capacitive dry sleeve in the utility model, used the leading-out terminal of conducting rod as electric energy, by the outside insulator be set with of conducting rod, carries out insulating radiation, thoroughly changed the mode of operation of oil filled bushing in the past.Simultaneously, find that in the process of research and development dry and cracked phenomenon very easily appears in dry sleeve, be that conducting rod separates with insulator, and just there is great potential safety hazard in the use of the dry sleeve after dry and cracked, just cause the useful life of dry sleeve short, exploitativeness is poor, even if Here it is, there is great number of issues in oil filled bushing, the reason stepped down from the stage of history not yet.By researcher's scientific research effort, the creationary new structure conducting rod that is connected and forms by two kinds of materials that works out, this conducting rod had both efficiently solved the dry and crack problems of dry sleeve, met again the hardness requirement that machining is carried out at two ends.
Preferably, described conducting rod main body 11 is the aluminium bar, and metallic aluminium is conductivity material preferably, and the thermal coefficient of expansion of its thermal coefficient of expansion and insulator material is comparatively approaching simultaneously.
Further preferably, described connector 12 is brass rod, and the conductivity of brass is better, and its hardness is stronger, is suitable for the requirement of machining.
Further preferably, described conducting rod main body 11 and connector 12 are cylinder, and the diameter of the two is identical, and the end face center of circle is on same straight line; Really making whole conducting rod is straight line, does not bend, and improves conductance and conductive effect.
Further preferably, the surface of described conducting rod main body 11 is provided with reticular texture 111, and the design by this reticular texture can be combined more closely with insulator the conducting rod main body, effectively further prevents the generation of the dry and cracked phenomenon of sleeve pipe.
Further preferably, described insulator 2 is umbrella, and the radiating effect of the insulator of this shape is better.
Non-capacitive dry sleeve in the utility model, adopt friction welding (FW) and pressure gel technology to process.
The non-capacitive dry sleeve that the utility model provides, its advantage is: this dry sleeve is without with oil, simple in structure, good conductivity, long service life, safe, and also processing is simple, easily operation, and cost of manufacture is low.
The accompanying drawing explanation
The structural representation that Fig. 1 is the non-capacitive dry sleeve;
The longitudinal sectional drawing that Fig. 2 is the non-capacitive dry sleeve;
The structural representation that Fig. 3 is conducting rod.
Embodiment
embodiment one
Be a kind of dry sleeve of the non-capacitive for the 35KV transformer as shown in Figure 1 and Figure 2, this dry sleeve mainly contains conducting rod 1 and epoxyresin insulator 2 two parts form, wherein, epoxyresin insulator 2 is sleeved on the outside of conducting rod 1, and closely is connected between conducting rod 1 and epoxyresin insulator 2; As shown in Figure 3, described conducting rod 1 consists of three parts, be respectively aluminium matter conducting rod main body 11 and two brassiness connectors 12, described brassiness connector 12 is fixedly connected on the two ends of aluminium matter conducting rod main body 11, on the surface of described aluminium matter conducting rod main body 11, is provided with reticular texture; Wherein, the thermal coefficient of expansion of the thermal coefficient of expansion of aluminium matter conducting rod main body 11 and epoxyresin insulator 2 differs 10 * 10
-6/ ℃, therefore, aluminium matter conducting rod main body 11 is synchronizeed with thermal expansion and the cold contraction of epoxyresin insulator 2, and then effectively avoids the generation of dry and cracked phenomenon; And the hardness of brassiness connector 12 is 100HV, conveniently carry out machining, with the external world, be connected.
Embodiment two:
Be a kind of dry sleeve of the non-capacitive for the 10KV transformer as shown in Figure 1 and Figure 2, epoxyresin insulator 2 two parts that this dry sleeve mainly contains conducting rod 1 and umbrella form, wherein, epoxyresin insulator 2 is sleeved on the outside of conducting rod 1, and closely is connected between conducting rod 1 and epoxyresin insulator 2; As shown in Figure 3, described conducting rod 1 consists of three parts, be respectively cylindrical aluminium matter conducting rod main body 11 and two cylindrical brassiness connectors 12, described brassiness connector 12 is fixedly connected on the two ends of aluminium matter conducting rod main body 11, and brassiness connector 12 is identical with the diameter of aluminium matter conducting rod main body 11, the end face center of circle is on same straight line, and wherein, the thermal coefficient of expansion of aluminium matter conducting rod main body 11 and the thermal coefficient of expansion of epoxyresin insulator 2 differ 8 * 10
-6/ ℃, therefore, aluminium matter conducting rod main body 11 is synchronizeed with thermal expansion and the cold contraction of epoxyresin insulator 2, and then effectively avoids the generation of dry and cracked phenomenon; And the hardness of brassiness connector 12 is 120HV, conveniently carry out machining, with the external world, be connected.
Performance test:
Non-capacitive dry sleeve in top embodiment one and embodiment two is carried out to performance test, specifically as table 1:
Table 1: performance parameter table
| Sequence number | Operating current | Creepage distance | Industrial frequency withstand voltage | Useful life |
| The 35KV dry sleeve | 5~100A | 25mm/kV | 95kV | 20 years |
| The 35KV oil filled bushing | 5~100A | 25mm/kV | 95kV | 10 years |
| The 10KV dry sleeve | 10~700A | 25mm/kV | 42kV | 20 years |
| The 10KV oil filled bushing | 10~700A | 25mm/kV | 42kV | 10 years |
From table 1, the dry sleeve in the utility model can reach traditional oil filled bushing performance requirement fully, and its long service life, has reduced cost, has also eliminated potential safety hazard simultaneously.
Claims (7)
1. a non-capacitive dry sleeve, this sleeve pipe comprises conducting rod (1), be sleeved on the insulator (2) on conducting rod (1), it is characterized in that: described conducting rod (1) comprises conducting rod main body (11) and is fixedly connected on the connector (12) at conducting rod main body (11) two ends; And the material of described connector (12) is different from the material of conducting rod main body (11).
2. according to the described non-capacitive dry sleeve of claim 1, it is characterized in that: described conducting rod main body (11) is the aluminium bar.
3. according to the described non-capacitive dry sleeve of claim 2, it is characterized in that: described connector (12) is brass rod.
4. according to the described non-capacitive dry sleeve of claim 2 or 3, it is characterized in that: described conducting rod main body (11) and connector (12) are cylinder, and the diameter of the two is identical, and the end face center of circle is on same straight line.
5. according to the described non-capacitive dry sleeve of claim 1, it is characterized in that: the surface of described conducting rod main body (11) is provided with reticular texture (111).
6. according to the described non-capacitive dry sleeve of claim 4, it is characterized in that: the surface of described conducting rod main body (11) is provided with reticular texture (111).
7. according to the described non-capacitive dry sleeve of claim 1, it is characterized in that: described insulator (2) is umbrella.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320376108 CN203351362U (en) | 2013-06-27 | 2013-06-27 | Non-capacitance type dry type sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320376108 CN203351362U (en) | 2013-06-27 | 2013-06-27 | Non-capacitance type dry type sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203351362U true CN203351362U (en) | 2013-12-18 |
Family
ID=49751229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320376108 Expired - Fee Related CN203351362U (en) | 2013-06-27 | 2013-06-27 | Non-capacitance type dry type sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203351362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118631A (en) * | 2015-09-25 | 2015-12-02 | 苏州翰为电气科技有限公司 | Dry-type insulating sleeve |
-
2013
- 2013-06-27 CN CN 201320376108 patent/CN203351362U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118631A (en) * | 2015-09-25 | 2015-12-02 | 苏州翰为电气科技有限公司 | Dry-type insulating sleeve |
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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 |
Granted publication date: 20131218 Termination date: 20180627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |