CN102761089A - Electrical cable terminal with miniature safety valve - Google Patents
Electrical cable terminal with miniature safety valve Download PDFInfo
- Publication number
- CN102761089A CN102761089A CN2012102021732A CN201210202173A CN102761089A CN 102761089 A CN102761089 A CN 102761089A CN 2012102021732 A CN2012102021732 A CN 2012102021732A CN 201210202173 A CN201210202173 A CN 201210202173A CN 102761089 A CN102761089 A CN 102761089A
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- CN
- China
- Prior art keywords
- valve body
- safety valve
- electrical cable
- cable termination
- miniature safety
- 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.)
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Abstract
An electrical cable terminal with a miniature safety valve relates to the electrical cable terminal in the field of manufacturing of electrical cable accessories. The miniature safety valve is installed on a top plate of the electrical cable terminal; the miniature safety valve comprises a cylindrical valve body; a T-shaped air guiding pipe is arranged inside the valve body; the T-shaped air guiding pipe has a tee structure consisting of through holes penetrating through the side walls of the valve body and a non-through hole formed at the bottom of the valve body; and a rubber sleeve is sleeved on the valve body and covers the through holes penetrating through the side walls of the valve body. The air pressure inside the electrical cable terminal is effectively controlled so as to realize automatic pressure relief and prevent explosion caused by too high pressure, thus greatly prolonging the service life of the electrical cable terminal and improving the safety performance thereof.
Description
Technical field
The present invention relates to electric cable accessories and make the cable termination in field, relate in particular to a kind of cable termination with miniature safety valve.
Background technology
Cable termination is meant that HV cable accessories 500kV and following each electric pressure contain the indoor outer terminal of insulation filling agent, comprises the indoor outer terminal of insulator, the indoor outer terminal of composite bushing, when cable termination after operation; Inner heat reaches as high as 95 ℃, and its insulating oil generation hot line property is splashed bloated, causes the certain air in sleeve pipe top seriously to compress; Produce the air pressure that generally is higher than 0.3MPa, because general of the operating pressure of sleeve design is 0.2MPa, therefore; In long-term actual moving process; Produce blast easily because pressure is excessive, be the difficult problem of puzzlement cable termination always, haves much room for improvement.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of explosion-proof, sealing, self-relieving cable termination with miniature safety valve are provided.
The present invention is for solving the problems of the technologies described above; Following technical scheme is provided: a kind of cable termination with miniature safety valve; Described miniature safety valve is installed on the cable termination top board; It is characterized in that miniature safety valve comprises cylinder shape valve, be provided with the T-shape guide pipeline in the valve body, described T-shape guide pipeline is the through hole of perforation body wall and the three-port structure of the blind hole formation that the valve body bottom is offered; Be socketed with rubber sleeve on the described valve body, be covered on the through hole that connects body wall.
As further improvement of the present invention, be provided with wireway in the blind hole that said valve body bottom is offered, the top board that wireway passes cable termination stretches in the cable termination inner plenum.
As of the present invention preferred, described rubber sleeve is a liquid-state silicon gel tubular type cover.Its length can be set according to product, generally gets final product at 30～50mm, change its wall thickness the size or and T type guide pipeline between the magnitude of interference, can change specified release pressure.
This better explains technical scheme of the present invention, below introduces operation principle of the present invention in detail: after cable termination adopts the safety valve, when inside pipe casing air pressure during greater than rated pressure (can design the arbitrary value in 0.1～0.3MPa); Pressure gets in the valve body through wireway, and the rubber sleeve pressurized outwards expands, thus releasing pressure automatically; Protected the safe operation of cable termination, when the cable termination operation suspension, the insulating oil cooling; Internal pressure diminishes; The pressure minimum can not reach vacuum-0.1MPa yet, all the bearing within the pressure of sleeve pipe, the rubber sleeve on the valve body since external pressure greater than internal pressure; Rubber sleeve is close on the through hole that connects body wall, makes its sealing.
Beneficial effect of the present invention: the present invention is through installing a miniature safety valve on the cable termination top board, effectively control cable terminal inner air pressure is realized releasing pressure automatically, prevents that pressure from crossing huge explosion, and service life of equipment and security performance are provided greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
A kind of cable termination with miniature safety valve; Described miniature safety valve is installed on the cable termination top board 005; Miniature safety valve comprises cylinder shape valve 001; Be provided with T-shape guide pipeline 002 in the valve body 001, described T-shape guide pipeline 002 is socketed with rubber sleeve 003 for the through hole 021 of perforation body wall and the three-port structure of blind hole 022 formation that the valve body bottom is offered on the described valve body 001; Be covered on the through hole 021 that connects valve body 001 sidewall; Be provided with wireway 004 in the blind hole 022 that said valve body 001 bottom is offered, the top board 005 that wireway 004 passes cable termination stretches in the cable termination inner plenum 006, and described rubber sleeve is a liquid-state silicon gel tubular type cover.
Claims (3)
1. cable termination with miniature safety valve; Described miniature safety valve is installed on the cable termination top board; It is characterized in that miniature safety valve comprises cylinder shape valve, be provided with the T-shape guide pipeline in the valve body, described T-shape guide pipeline is the through hole of perforation body wall and the three-port structure of the blind hole formation that the valve body bottom is offered; Be socketed with rubber sleeve on the described valve body, be covered on the through hole that connects body wall.
2. a kind of cable termination with miniature safety valve according to claim 1 is provided with wireway in the blind hole that it is characterized in that offering said valve body bottom, and the top board that wireway passes cable termination stretches in the cable termination inner plenum.
3. a kind of cable termination with miniature safety valve according to claim 1 is characterized in that described rubber sleeve is a liquid-state silicon gel tubular type cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102021732A CN102761089A (en) | 2012-06-19 | 2012-06-19 | Electrical cable terminal with miniature safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102021732A CN102761089A (en) | 2012-06-19 | 2012-06-19 | Electrical cable terminal with miniature safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102761089A true CN102761089A (en) | 2012-10-31 |
Family
ID=47055447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102021732A Pending CN102761089A (en) | 2012-06-19 | 2012-06-19 | Electrical cable terminal with miniature safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102761089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994533A (en) * | 2020-01-13 | 2020-04-10 | 埃塞克斯电气(南京)有限公司 | Cable intermediate joint |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535387A1 (en) * | 1985-10-03 | 1987-04-09 | Siemens Ag | PRESSURE-TIGHT EARTH POTENTIAL ENTRY IN CABLE FITTINGS |
| CN2053703U (en) * | 1989-03-25 | 1990-02-28 | 胜利油田临盘指挥部采油一矿 | Silicone rubber sleeve safety valve |
| JPH07115727A (en) * | 1993-10-15 | 1995-05-02 | Furukawa Electric Co Ltd:The | Connecting part of electric power cable |
| CN101651270A (en) * | 2009-07-22 | 2010-02-17 | 中航光电科技股份有限公司 | Safe ventilated electric connector |
| CN201590642U (en) * | 2009-12-25 | 2010-09-22 | 江苏安靠超高压电缆附件有限公司 | Explosion-proof cable outdoor terminal |
| CN201733025U (en) * | 2010-06-12 | 2011-02-02 | 丹阳市中信化工电器设备有限公司 | Respiratory valve of respiratory explosion-proof junction box |
| CN202663070U (en) * | 2012-06-19 | 2013-01-09 | 江苏科耐特高压电缆附件有限公司 | Cable terminal with miniature safety valve |
-
2012
- 2012-06-19 CN CN2012102021732A patent/CN102761089A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535387A1 (en) * | 1985-10-03 | 1987-04-09 | Siemens Ag | PRESSURE-TIGHT EARTH POTENTIAL ENTRY IN CABLE FITTINGS |
| CN2053703U (en) * | 1989-03-25 | 1990-02-28 | 胜利油田临盘指挥部采油一矿 | Silicone rubber sleeve safety valve |
| JPH07115727A (en) * | 1993-10-15 | 1995-05-02 | Furukawa Electric Co Ltd:The | Connecting part of electric power cable |
| CN101651270A (en) * | 2009-07-22 | 2010-02-17 | 中航光电科技股份有限公司 | Safe ventilated electric connector |
| CN201590642U (en) * | 2009-12-25 | 2010-09-22 | 江苏安靠超高压电缆附件有限公司 | Explosion-proof cable outdoor terminal |
| CN201733025U (en) * | 2010-06-12 | 2011-02-02 | 丹阳市中信化工电器设备有限公司 | Respiratory valve of respiratory explosion-proof junction box |
| CN202663070U (en) * | 2012-06-19 | 2013-01-09 | 江苏科耐特高压电缆附件有限公司 | Cable terminal with miniature safety valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994533A (en) * | 2020-01-13 | 2020-04-10 | 埃塞克斯电气(南京)有限公司 | Cable intermediate joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |