CN212276988U - Cable connection sealing structure of transformer - Google Patents
Cable connection sealing structure of transformer Download PDFInfo
- Publication number
- CN212276988U CN212276988U CN202021136417.8U CN202021136417U CN212276988U CN 212276988 U CN212276988 U CN 212276988U CN 202021136417 U CN202021136417 U CN 202021136417U CN 212276988 U CN212276988 U CN 212276988U
- Authority
- CN
- China
- Prior art keywords
- cable
- copper bar
- transformer
- heat
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 239000011810 insulating material Substances 0.000 claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 11
- 239000000565 sealant Substances 0.000 claims abstract description 4
- 229920000784 Nomex Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004763 nomex Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000002966 varnish Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a transformer cable junction seal structure, including connecting copper bar (1) and connecting cable (2), connecting cable's line nose (3) fastening is in connect on the copper bar, connect the copper bar with connecting cable's junction wraps the one deck insulating material, just the insulating material outside is applied paint a layer of insulating paint with a brush. The connection copper bar is sleeved with a heat-shrinkable sleeve at the connection position of the connection cable, and a layer of sealant is coated inside the heat-shrinkable sleeve. The utility model discloses can effectively improve transformer cable junction insulating properties and waterproof sealing performance to can prevent that cable junction from connecting phenomenons such as generating heat, short circuit because of partial discharge, virtual that infiltration, laying dust, corruption caused.
Description
Technical Field
The utility model relates to a transformer (reactor) cable junction seal structure.
Background
The transformer and the reactor are used as core magnetic elements of the auxiliary inverter of the rail transit locomotive, and the electrical connection modes of lead terminals of the transformer and the reactor and other equipment are mainly two: one is to fix the copper bar by an insulator, and the other is to directly connect the cable of other equipment with the outgoing line of the transformer (reactor). Due to the particularity of the using environment of the locomotive product, the requirements on water resistance, dust resistance and corrosion resistance of the product are particularly strict, and the product is designed to be safe and reliable and also has enough guarantee on long-term use and maintenance of the product. Among the two electrical connection modes, the insulator copper bar fixing mode mainly ensures the safety of products after dust deposition and water accumulation by designing enough creepage distance and discharge distance, but the required space is relatively large; the direct cable and outgoing line connection mode occupies a small space, sealing needs to be done at the cable connection position, and particularly when two cables need to be led out from one electric terminal, sealing and water proofing are very troublesome.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that it is not enough to overcome prior art, provide one kind and can realize reliably, solve the transformer cable junction seal structure of waterproof, dustproof, the anticorrosive problem of transformer terminal high-efficiently.
For solving the technical problem, the utility model provides a transformer cable junction seal structure, including connecting copper bar and connecting cable, connecting cable's line nose fastening is in connect on the copper bar, connect the copper bar with connecting cable's junction wraps the one deck insulating material, just the insulating material outside is applied paint a layer of insulating paint with a brush.
The utility model discloses a fastener has realized the reliable connection between both with the line nose of transformer connecting cable and the connection copper bar fastening of other equipment to insulating material wraps up the junction of connecting copper bar and connecting cable, applies paint insulating varnish with a brush again in insulating material's outside, can improve transformer cable junction insulating properties effectively, and improve its waterproof, dustproof, corrosion resisting property.
Preferably, a heat-shrinkable sleeve is sleeved at the joint of the connecting copper bar and the connecting cable, and a layer of sealant is coated inside the heat-shrinkable sleeve to further improve the waterproof performance of the heat-shrinkable sleeve.
Preferably, the insulating material is Nomex paper, polyimide film or fiberglass cloth.
Preferably, when the number of the connecting cables is two, the heat-shrinkable sleeve is a combined heat-shrinkable sleeve capable of accommodating two cables simultaneously.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses can effectively improve transformer cable junction insulating properties and waterproof sealing performance to can prevent that cable junction from causing the partial discharge of transformer (reactor), phenomenon such as virtual joint generate heat, short circuit because of infiltration, laying dust, corruption, effectively solved because transformer (reactor) input/output cable connection is sealed unreliable, and the circuit or the transformer trouble that arouse.
Compare with the tradition only use bushing seal's connection process, the utility model discloses a rubber coated heat shrinkable tube can improve waterproof, dustproof, anticorrosive that transformer (reactor) cable joint to reduce the infiltration electric leakage risk in the transformer (reactor) use, reduce transformer (reactor) fault rate. The experiment proves, adopts the utility model discloses a transformer (reactor) soaks in water 72 back for a short time, and cable junction insulation resistance can reach more than 300 megaohms, and the index is higher than other producers like product far away.
Drawings
Fig. 1 is a schematic view of the appearance structure of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
In the figure: 1. connecting the copper bars; 2. connecting a cable; 3. a wire nose; 4. insulating material and insulating paint layer; 5. and (4) heat-shrinkable tubing.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
Example 1:
as shown in fig. 1 and 2, the utility model discloses transformer cable junction seal structure embodiment is including connecting copper bar 1 and connecting cable 2, the line nose 3 of connecting cable 2 is in with the bolt-up connect on the copper bar 1, connect copper bar 1 with the junction of connecting cable 2 wraps the one deck insulating material, just a layer of insulating paint is applied paint with a brush to the insulating material outside.
The insulating material is Nomex paper, polyimide film or glass fiber cloth. The insulating paint is moisture-proof high-temperature-resistant environment-friendly insulating quick-drying paint.
The joint of the connecting copper bar 1 and the connecting cable 2 is sleeved with a heat-shrinkable sleeve 5, and a layer of sealant is coated inside the heat-shrinkable sleeve 5. When the number of the connecting cables 2 is two, the heat-shrinkable sleeve 5 is a combined heat-shrinkable sleeve capable of accommodating two cables simultaneously.
Following is that the 260kVA transformer connecting cable that the same model of applicant produced adopts traditional connection structure and the utility model discloses connect after seal structure handles connecting cable binding post, the test data of immersion aquatic. The test is to test the insulation resistance of the outgoing cable and the ground after the transformer terminal is connected with the cable, and before the cable is connected, the insulation resistance of the terminal to the ground after the transformer is soaked is also measured, so that the misjudgment of the test result caused by the winding defect of the transformer is eliminated. The test data are as follows:
adopt traditional connection structure's cable junction terminal technology test data:
adopt the utility model discloses connect seal structure's test data:
the above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.
Claims (4)
1. The utility model provides a transformer cable junction seal structure, is including connecting copper bar (1) and connecting cable (2), connecting cable's line nose (3) fastening is in connect on the copper bar, its characterized in that, connect the copper bar with connecting cable's junction wraps a layer insulating material, just a layer insulating varnish is applied paint with a brush to the insulating material outside.
2. The transformer cable connection sealing structure according to claim 1, wherein a heat-shrinkable sleeve (5) is sleeved at the joint of the connection copper bar and the connection cable, and a layer of sealant is coated inside the heat-shrinkable sleeve.
3. The transformer cable connection sealing structure according to claim 1, wherein the insulating material is Nomex paper, polyimide film, or glass fiber cloth.
4. The transformer cable connection sealing structure according to claim 2, wherein when the number of the connection cables is two, the heat-shrinkable sleeve is a combined heat-shrinkable sleeve capable of accommodating two cables at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136417.8U CN212276988U (en) | 2020-06-18 | 2020-06-18 | Cable connection sealing structure of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136417.8U CN212276988U (en) | 2020-06-18 | 2020-06-18 | Cable connection sealing structure of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212276988U true CN212276988U (en) | 2021-01-01 |
Family
ID=73881348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021136417.8U Expired - Fee Related CN212276988U (en) | 2020-06-18 | 2020-06-18 | Cable connection sealing structure of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212276988U (en) |
-
2020
- 2020-06-18 CN CN202021136417.8U patent/CN212276988U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210101 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |