CN101404402A - Combination type cable protective layer protector - Google Patents
Combination type cable protective layer protector Download PDFInfo
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- CN101404402A CN101404402A CNA2008100721118A CN200810072111A CN101404402A CN 101404402 A CN101404402 A CN 101404402A CN A2008100721118 A CNA2008100721118 A CN A2008100721118A CN 200810072111 A CN200810072111 A CN 200810072111A CN 101404402 A CN101404402 A CN 101404402A
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- protective layer
- combination type
- electrode
- insulating case
- type cable
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Abstract
The invention relates to a protector of a combined type cable protection layer, comprising a cable lead, an isolating sleeve, an electrode, a metal oxide valve plate and a grounding body; the isolating sleeve packs, seals and connects the cable lead, the electrode, the metal oxide valve plate and the grounding body in turn for forming an integral structure; the connection between the structure and the metal protection layer of a single-core power cable and the mounting of the protector of a combined type cable protection layer in an electrical distribution device or system are simple; moreover, the occupied space is small.
Description
Technical field
The present invention relates to cable protecting device, relate in particular to a kind of combination type cable protective layer protector that can be used for single-core power cables metal sheath overvoltage protection.
Background technology
At present, the metal sheath of single-core power cables can produce induced voltage in actual motion, and the load current size of carrying in the size of this induced voltage and construction of cable parameter, cable length and the cable conductor is relevant.Along with increase, the particularly electric railway system of single-core power cables lay length lay very long single-core power cables along the line; for the safe operation of bonding core power cable, need to adopt overvoltage protection that the induced voltage of single-core power cables metal sheath is protected.
Existing single-core power cables metal sheath overvoltage protection is general to adopt split type sheath protector to finish; split type sheath protector generally need be installed in the special closed box and to constitute ground protection case or cross interconnected case, and general the use in 66kV and above single-core power cables system.Press in 10～35kV in the single-core power cables system, in the particularly electric railway distribution system, if adopt traditional sheath protector, inconvenience is installed at the scene, the workload of installation is big, for the moistureproof difficult treatment of its water-tight of outdoor equipment; If sheath protector is placed in ground protection case or the cross interconnected case, the scene may not have suitable installing space, its with the single-core power cables metal sheath between be inconvenient to be connected, and equipment cost is very high.
Summary of the invention
It is a kind of simple in structure that the object of the invention is to provide, single-core power cables metal sheath and simple to operate, the economical and practical combination type cable protective layer protector of cable protective layer protector connection.
The present invention is achieved through the following technical solutions: combination type cable protective layer protector comprises cable tail, insulating case, electrode, metal oxide valve block and earth electrode; insulating case is with electrode and metal oxide valve block environmental sealing; one end of cable tail is wrapped and is sealed in insulating case one end; one end of earth electrode is wrapped and is sealed in the insulating case other end, and cable tail, electrode, metal oxide valve block are connected in regular turn with earth electrode.
Above-mentioned cable tail is provided with leading-in conductor and lead wire insulation layer, and leading-in conductor is connected with the single-core power cables metal sheath.
Above-mentioned leading-in conductor sectional area is not less than 16mm2.
Above-mentioned lead wire insulation layer thickness is not less than 1.5mm.
Leading-in conductor in one end of above-mentioned cable tail and electrode socket.
Above-mentioned cable tail length is greater than 300mm, and preferred length is 500mm 100mm.
Above-mentioned insulating case preferred thickness is 4 1mm, and insulating case one end covers lead wire insulation layer 50mm at least, and the thickness of its overlay segment is at least 2mm.
The present invention adopts above technical scheme, has the following advantages compared to existing technology: cable tail, electrode, metal oxide valve block are connected by insulating case with earth electrode and are in the same place, and integral sealing forms integrated structure.When being connected between cable tail and the single-core power cables metal sheath; only need earth electrode is fixed on the equipment ground body; with one section lead wire insulation layer of the terminal strip off of cable tail, expose leading-in conductor, and leading-in conductor is fixed on the single-core power cables metal sheath that needs protection gets final product.Thereby reach being connected between combination type cable protective layer protector and the single-core power cables metal sheath, the installation of combination type cable protective layer protector in controller switching equipment or system is simple; it is little to take up room; the fitting operation program is simple; promptly help increasing work efficiency, reducing labour intensity, saved equipment cost again.
Description of drawings
Now in conjunction with the accompanying drawings the present invention is further elaborated:
Fig. 1 is the structural representation of cable protective layer protector of the present invention;
Fig. 2 is the connection schematic diagram of cable protective layer protector of the present invention and single-core power cables metal sheath and controller switching equipment;
Fig. 3 is the connection schematic diagram of cable protective layer protector of the present invention and single-core power cables metal sheath.
Embodiment
Please refer to shown in Fig. 1,2 or 3, the present invention includes cable tail 1, insulating case 2, electrode 3, metal oxide valve block 4 and earth electrode 5, cable tail 1 is provided with leading-in conductor 12 and lead wire insulation layer 11, the length of cable tail 1 should be greater than 300mm, make things convenient for being connected between its other end 14 and single-core power cables 8 metal sheaths 81 like this, its optimum length is 500mm 100mm; Leading-in conductor 12 adopts flexible conductor, and its sectional area is not less than 16mm2; The thickness of lead wire insulation layer 11 is not less than 1.5mm.Insulating case 2 is with electrode 3 and metal oxide valve block 4 environmental sealings, one end 13 of cable tail 1 is wrapped and is sealed in insulating case 2 one ends 21, insulating case 2 preferred thickness are 4 1mm, insulating case 2 one ends 21 cover lead wire insulation layer 11 50mm at least, the thickness of its overlay segment is at least 2mm, leading-in conductor 12 and electrode 3 sockets in one end 13 of cable tail 1, a termination terrain diversion component 51 of earth electrode 5 is wrapped and is sealed in insulating case 2 other ends 24.Insulating case 2 employing molded vulcanizations or rubber injection sulfuration or liquid rubber room temperature vulcanization or technologies such as moulding of resin automatic pressure gel or viscose glue are connected its cable tail 1, electrode 3, metal oxide valve block 4 and earth electrode 5 in regular turn, and environmental sealing becomes an integral body.
When the present invention installs, the other end 52 of earth electrode 5 can directly be fixed on the earth electrode 92 of controller switching equipment 9, the leading-in conductor 12 of the other end 14 of cable tail 1 is fixed on single-core power cables 8 metal sheaths 81 by suitable fixed part 7, and single-core power cables 8 is connected with the equipment casing 91 of controller switching equipment 9 by electric cable accessories 6.So combination type cable protective layer protector just can be protected the induced voltage of single-core power cables metal sheath.
Claims (8)
1, combination type cable protective layer protector; it is characterized in that: it comprises cable tail (1), insulating case (2), electrode (3), metal oxide valve block (4) and earth electrode (5); insulating case (2) is with electrode (3) and metal oxide valve block (4) environmental sealing; one end (13) of cable tail (1) is wrapped and is sealed in insulating case (2) one ends (21); one end (51) of earth electrode (5) is wrapped and is sealed in insulating case (2) other end (24), and cable tail (1), electrode (3), metal oxide valve block (4) and earth electrode (5) are connected in regular turn.
2, according to the described combination type cable protective layer protector of claim 1; it is characterized in that: its cable tail (1) is provided with leading-in conductor (12) and lead wire insulation layer (11), and leading-in conductor (1) other end (14) is connected with single-core power cables (8) metal sheath (81).
3, according to the described combination type cable protective layer protector of claim 2, it is characterized in that: its leading-in conductor (12) sectional area is not less than 16mm2.
4, according to the described combination type cable protective layer protector of claim 2, it is characterized in that: its lead wire insulation layer (11) thickness is not less than 1.5mm.
5, according to claim 1 or 2 described combination type cable protective layer protectors, it is characterized in that: leading-in conductor (12) in the end (13) of its cable tail (1) and electrode (3) socket.
6, according to claim 1 or 2 described combination type cable protective layer protectors, it is characterized in that: its cable tail (1) length is greater than 300mm, and preferred length is 500mm 100mm.
7, according to the described combination type cable protective layer protector of claim 1, it is characterized in that: its insulating case (2) preferred thickness is 41mm, and insulating case (2) one ends (21) cover lead wire insulation layer (11) 50mm at least, and the thickness of its overlay segment is at least 2mm.
8, according to claim 1,2,3,4,5 or 7 described combination type cable protective layer protectors; it is characterized in that: its insulating case (2) employing molded vulcanization or rubber injection sulfuration or liquid rubber room temperature vulcanization or technologies such as moulding of resin automatic pressure gel or viscose glue are connected its cable tail (1), electrode (3), metal oxide valve block (4) and earth electrode (5) in regular turn, and environmental sealing becomes an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100721118A CN101404402A (en) | 2008-11-13 | 2008-11-13 | Combination type cable protective layer protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100721118A CN101404402A (en) | 2008-11-13 | 2008-11-13 | Combination type cable protective layer protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101404402A true CN101404402A (en) | 2009-04-08 |
Family
ID=40538303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100721118A Pending CN101404402A (en) | 2008-11-13 | 2008-11-13 | Combination type cable protective layer protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101404402A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451312A (en) * | 2015-08-06 | 2017-02-22 | 中国电力科学研究院 | Inhibition method for transient ground potential rise of 500kV cable GIS terminal |
| CN106602538A (en) * | 2017-03-03 | 2017-04-26 | 中国电力工程顾问集团西南电力设计院有限公司 | Type selection method of high-voltage single-core cable-sheath-protector parallel connection Z type transformer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3541440A1 (en) * | 1985-11-23 | 1987-05-27 | Felten & Guilleaume Energie | Overvoltage protection cage for a housing lead-in of a high-voltage cable |
| CN2333070Y (en) * | 1997-12-19 | 1999-08-11 | 长沙电缆附件技术开发公司 | Cable protective layer protector |
| CN2344848Y (en) * | 1998-09-22 | 1999-10-20 | 西安神电避雷器有限公司 | Combined all-insulated metal oxide lightning arrester |
| CN2463927Y (en) * | 2000-12-15 | 2001-12-05 | 西安神电电器有限公司 | Full-insulated metal-oxide arrester |
| CN201038349Y (en) * | 2007-04-04 | 2008-03-19 | 长沙电缆附件有限公司 | High voltage single core power cable grounding device |
| CN201038515Y (en) * | 2007-04-04 | 2008-03-19 | 长沙电缆附件有限公司 | High voltage single-core power cable intersection box |
| CN201345527Y (en) * | 2008-11-13 | 2009-11-11 | 福建中能电气股份有限公司 | Combined type cable sheath protector |
-
2008
- 2008-11-13 CN CNA2008100721118A patent/CN101404402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3541440A1 (en) * | 1985-11-23 | 1987-05-27 | Felten & Guilleaume Energie | Overvoltage protection cage for a housing lead-in of a high-voltage cable |
| CN2333070Y (en) * | 1997-12-19 | 1999-08-11 | 长沙电缆附件技术开发公司 | Cable protective layer protector |
| CN2344848Y (en) * | 1998-09-22 | 1999-10-20 | 西安神电避雷器有限公司 | Combined all-insulated metal oxide lightning arrester |
| CN2463927Y (en) * | 2000-12-15 | 2001-12-05 | 西安神电电器有限公司 | Full-insulated metal-oxide arrester |
| CN201038349Y (en) * | 2007-04-04 | 2008-03-19 | 长沙电缆附件有限公司 | High voltage single core power cable grounding device |
| CN201038515Y (en) * | 2007-04-04 | 2008-03-19 | 长沙电缆附件有限公司 | High voltage single-core power cable intersection box |
| CN201345527Y (en) * | 2008-11-13 | 2009-11-11 | 福建中能电气股份有限公司 | Combined type cable sheath protector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451312A (en) * | 2015-08-06 | 2017-02-22 | 中国电力科学研究院 | Inhibition method for transient ground potential rise of 500kV cable GIS terminal |
| CN106451312B (en) * | 2015-08-06 | 2018-11-16 | 中国电力科学研究院 | A kind of raised suppressing method of 500kV cable GIS terminal transient state ground potential |
| CN106602538A (en) * | 2017-03-03 | 2017-04-26 | 中国电力工程顾问集团西南电力设计院有限公司 | Type selection method of high-voltage single-core cable-sheath-protector parallel connection Z type transformer |
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Application publication date: 20090408 |