CN201336195Y - High-voltage power cable sheath protector - Google Patents
High-voltage power cable sheath protector Download PDFInfo
- Publication number
- CN201336195Y CN201336195Y CNU2008202305521U CN200820230552U CN201336195Y CN 201336195 Y CN201336195 Y CN 201336195Y CN U2008202305521 U CNU2008202305521 U CN U2008202305521U CN 200820230552 U CN200820230552 U CN 200820230552U CN 201336195 Y CN201336195 Y CN 201336195Y
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- CN
- China
- Prior art keywords
- aluminum alloy
- power cable
- protector
- zinc oxide
- alloy anode
- 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
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Abstract
The utility model discloses a high-voltage power cable sheath protector, relating to an overvoltage protecting device of a metallic sheath of a single-core power cable. The structure of the protector is that a connecting hardware fitting (5), an aluminum alloy electrode (4), a nonlinear zinc oxide resistance card (3), an aluminum alloy electrode (4) and a connecting hardware fitting (5) are sequentially connected to form a cylinder and the two ends of cylinder are symmetrical; the nonlinear zinc oxide resistance card (3) and the aluminum alloy electrode (4) are covered with insulating resin (2), and the external end face of the aluminum alloy electrode (4) is exposed to form a core; the external surface of the core is covered by a rubber housing (1) through the composite vulcanization and hole sites are left at the two ends of the core to facilitate the connection between the connecting hardware fitting (5) and the aluminum alloy electrode. The utility model has the advantages that the metallic cable sheath is limited to induct the overvoltage and the fault overvoltage, the volt-ampere characteristic curve is smooth, the discharge current capability is high and the protection feature is favorable; the tightness is good and the protector is safe, explosion-proof and free of maintenance; the protector is suitable for the protective grounding of the metallic sheath of the single-core power cable.
Description
Technical field
The utility model relates to a kind of single-core power cables metallic sheath overvoltage protection, relates in particular to a kind of high voltage power cable sheath protector.
Background technology
Safety when contacting in order to ensure on duty and maintainer, regulation among the GB 50217 " Code for design of cables of electric works ", cable metal puts induced voltage must not surpass 50V.Big when current-carrying capacity of cable, when circuit is longer, when particularly power cable line is short-circuited fault or overvoltage invasion, induced potential in its cable metal cover may puncture the cable metallic sheath and cause the cable line multipoint earthing to make the current-carrying capacity of cable maximum reduce about 40%, shorten the cable running safety life-span, even jeopardize personal safety.Therefore, the power cable line protective earthing is a cable metal cover reliable ground, is one of important safeguard measure that effectively ensures the power cable line safe operation.Power cable line is taking place under earth fault or lightning overvoltage and the internal overvoltage state, and the cable metal cover should be clamped down on the current potential of cable line earthing position in the earthing potential scope that allows through high voltage power cable sheath protector reliable ground.
In the electrical power trans mission/distribution system of city, underground power cable circuit use amount increases substantially.Simultaneously, the earthing mode and the overvoltage reason of overlapping owing to cable metal cause the power cable line ampacity sharply to descend, even the problem of generation operation troubles is outstanding day by day.Therefore, the cable metal cover should select that protective feature is good, through-current capability is big, good seal performance, technical parameter sheath protector reasonable in design, makes cable metal cover reliable ground, prevents that external insulation is breakdown.
Summary of the invention
The purpose of this utility model overcomes the problem and shortage that prior art exists, and a kind of single-core power cables metallic sheath overvoltage protection---high voltage power cable sheath protector is provided.
The purpose of this utility model is achieved in that
The utility model comprises silastic material, insulating resin, non-linear zinc oxide resistance sheet, aluminum alloy anode and is connected gold utensil;
Connect gold utensil, aluminum alloy anode, non-linear zinc oxide resistance sheet, aluminum alloy anode and be connected gold utensil and connect successively, form a kind of laterally zygomorphic cylinder;
Be coated with insulating resin at non-linear zinc oxide resistance sheet and aluminum alloy anode outside, expose the outer face of aluminum alloy anode; Outside at insulating resin is coated with silastic material by composite sulfuration again.
Operation principle of the present utility model is:
The utility model be installed in the cable sheath protective earthing case usually and the cross interconnected protective earthing case of cable sheath in: its effect is:
(1) the line-frequency induction voltage in the restriction cable metal cover;
(2) power-frequency overvoltage and impulse overvoltage during inhibition or release cable metal overlap rapidly.
Specifically, when the cable line normal operating conditions, the utility model presents high resistance state, blocks line-frequency induction electric current and the loop that the earth forms in the cable metal cover, and limits circular induced current, with the line-frequency induction voltage clamp in the design voltage scope; In case short trouble or lightning overvoltage or internal overvoltage appear in cable line when causing very high power-frequency overvoltage or impulse overvoltage occurring in the cable metal cover; the utility model presents the low resistance conducting state; make fault current spew out into the earth rapidly through the utility model; temporary overvoltage is clamped down in self residual voltage scope, played the effect of protection cable metal cover.
The utlity model has following advantage and good effect:
1, restriction cable metal cover induction overvoltage and fault overvoltage, volt-ampere characteristic is smooth, and through-current capability is big, and protective feature is good;
2, silastic material adopts exclusive interface coupling technology and integral one-step molding technique, good seal performance, and safety anti-explosive, non-maintaining.
3, be applicable in the protective earthing of single-core power cables metallic sheath.
Description of drawings
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is the schematic diagram of in line lower carriage connected mode on the utility model;
Fig. 3 is the curved schematic diagram of in line connected mode down of arranging on the utility model.
Wherein:
The 1-silastic material;
The 2-insulating resin;
The non-linear zinc oxide resistance sheet of 3-;
The 4-aluminum alloy anode;
5-connects gold utensil.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, general structure and production technology thereof
1, general structure
As Fig. 1,2,3, the utility model comprises silastic material 1, insulating resin 2, non-linear zinc oxide resistance sheet 3, aluminum alloy anode 4 and is connected gold utensil 5;
Connect gold utensil 5, aluminum alloy anode 4, non-linear zinc oxide resistance sheet 3, aluminum alloy anode 4 and be connected gold utensil 5 and connect successively, form the cylinder of a kind of two ends symmetry;
Be coated with insulating resin 2 at non-linear zinc oxide resistance sheet 3 and aluminum alloy anode 4 outsides, expose the outer face of aluminum alloy anode 4; Outside at insulating resin 2 is coated with silastic material 1 by composite sulfuration again.
2, production technology
The utility model takes one piece to annotate rubber sulfidization molding new technology, comprises the following steps:
1. at first aluminum alloy anode (4), non-linear zinc oxide resistance sheet (3) and aluminum alloy anode (4) are stacked together successively, again with strengthening the moulding of plexiglas fibre mould;
2. utilize disposable notes rubber sulfidization molding new technology that the outside that insulating resin (2) is coated on non-linear zinc oxide resistance sheet 3 and aluminum alloy anode 4 is formed an integral body then;
3. the compound one deck silastic material of integral surface (1) again;
4. last assembling connects gold utensil (5) and gets final product.
Two, the structure of main parts size
1, silastic material 1
Silastic material 1 is a kind of silicone rubber sleeve with full skirt.
2, non-linear zinc oxide resistance sheet 3
Non-linear zinc oxide resistance sheet (3) is a kind of current limiting element that is cylindrical shape.
3, aluminum alloy anode 4
4, connect gold utensil 5
Connecting gold utensil 5 is a kind of parts commonly used.
Three, connected mode
1,, be that the bolt type connected mode is adopted at a kind of two ends as Fig. 1.
2,, be a kind of connected mode that in line lower carriage as Fig. 2.
3,, be a kind of curved row in line connected mode down that as Fig. 3.
Claims (4)
1, a kind of high voltage power cable sheath protector is characterized in that:
Comprise silastic material (1), insulating resin (2), non-linear zinc oxide resistance sheet (3), aluminum alloy anode (4) and be connected gold utensil (5);
Connect gold utensil (5), aluminum alloy anode (4), non-linear zinc oxide resistance sheet (3), aluminum alloy anode (4) and be connected gold utensil (5) and connect successively, form the cylinder of a kind of two ends symmetry;
Be coated with insulating resin (2) at non-linear zinc oxide resistance sheet (3) and aluminum alloy anode (4) outside, expose the outer face of aluminum alloy anode (4);
Outside at insulating resin (2) is coated with silastic material (1) by composite sulfuration.
2, by the described a kind of high voltage power cable sheath protector of claim 1, it is characterized in that:
Silastic material (1) is a kind of silicone rubber sleeve with full skirt.
3, by the described a kind of high voltage power cable sheath protector of claim 1, it is characterized in that:
Non-linear zinc oxide resistance sheet (3) is a kind of current limiting element that is cylindrical shape.
4, by the described a kind of high voltage power cable sheath protector of claim 1, it is characterized in that:
Aluminum alloy anode (4) is a kind of cylinder that is made of aluminium alloy, and its outer wall top is provided with the ditch ring of indent; Its bottom is provided with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305521U CN201336195Y (en) | 2008-12-23 | 2008-12-23 | High-voltage power cable sheath protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305521U CN201336195Y (en) | 2008-12-23 | 2008-12-23 | High-voltage power cable sheath protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336195Y true CN201336195Y (en) | 2009-10-28 |
Family
ID=41287855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202305521U Expired - Fee Related CN201336195Y (en) | 2008-12-23 | 2008-12-23 | High-voltage power cable sheath protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336195Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029247A (en) * | 2011-09-29 | 2013-04-10 | 株式会社东芝 | Electrical insulating cast article and manufacturing method thereof |
| CN103872582A (en) * | 2012-12-14 | 2014-06-18 | 上海明科电气有限公司 | Breakdown protector |
| CN106098275A (en) * | 2016-07-18 | 2016-11-09 | 广州供电局有限公司 | Cable protective layer protector and control method thereof |
| CN106099819A (en) * | 2016-08-15 | 2016-11-09 | 保定合力达电缆附件有限公司 | A kind of cable sheath protection device |
| WO2017075842A1 (en) * | 2015-11-05 | 2017-05-11 | 隆科电子(惠阳)有限公司 | Mov device structure fixed by means of a fastener |
| CN108597702A (en) * | 2018-05-24 | 2018-09-28 | 广州供电局有限公司 | Overvoltage protection device |
| CN108878083A (en) * | 2018-06-06 | 2018-11-23 | 广州供电局有限公司 | Cable sheath protective device and installation method |
| CN113922320A (en) * | 2021-10-29 | 2022-01-11 | 润世达工程有限公司 | Overvoltage protection combined lightning arrester of power system |
-
2008
- 2008-12-23 CN CNU2008202305521U patent/CN201336195Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029247A (en) * | 2011-09-29 | 2013-04-10 | 株式会社东芝 | Electrical insulating cast article and manufacturing method thereof |
| CN103029247B (en) * | 2011-09-29 | 2015-04-15 | 株式会社东芝 | Electrical insulating cast article and manufacturing method thereof |
| CN103872582A (en) * | 2012-12-14 | 2014-06-18 | 上海明科电气有限公司 | Breakdown protector |
| CN103872582B (en) * | 2012-12-14 | 2016-07-06 | 上海明科电气有限公司 | Discharge protector |
| WO2017075842A1 (en) * | 2015-11-05 | 2017-05-11 | 隆科电子(惠阳)有限公司 | Mov device structure fixed by means of a fastener |
| CN106098275A (en) * | 2016-07-18 | 2016-11-09 | 广州供电局有限公司 | Cable protective layer protector and control method thereof |
| CN106099819A (en) * | 2016-08-15 | 2016-11-09 | 保定合力达电缆附件有限公司 | A kind of cable sheath protection device |
| CN108597702A (en) * | 2018-05-24 | 2018-09-28 | 广州供电局有限公司 | Overvoltage protection device |
| CN108878083A (en) * | 2018-06-06 | 2018-11-23 | 广州供电局有限公司 | Cable sheath protective device and installation method |
| CN113922320A (en) * | 2021-10-29 | 2022-01-11 | 润世达工程有限公司 | Overvoltage protection combined lightning arrester of power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN LEITAI POWER NEW TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WUHAN LEITAI NEW ENERGY CO., LTD. Effective date: 20111118 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111118 Address after: 430074 No. 50 Bookstore Road, Hongshan District, Hubei, Wuhan Patentee after: Wuhan Leitai Electric Power New Technology Co.,Ltd. Address before: 430074 No. 50 Bookstore Road, Hongshan District, Hubei, Wuhan Patentee before: Wuhan Leitai New Energy Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |