CN203071531U - OPGW terminal grounding residual current isolation protection device - Google Patents
OPGW terminal grounding residual current isolation protection device Download PDFInfo
- Publication number
- CN203071531U CN203071531U CN 201220708508 CN201220708508U CN203071531U CN 203071531 U CN203071531 U CN 203071531U CN 201220708508 CN201220708508 CN 201220708508 CN 201220708508 U CN201220708508 U CN 201220708508U CN 203071531 U CN203071531 U CN 203071531U
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- China
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- opgw
- securing member
- ground connection
- support plate
- surplus cable
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Abstract
The utility model discloses an OPGW terminal grounding residual current isolation protection device. The OPGW terminal grounding residual current isolation protection device comprises insulating sheaths, a residual cable rack which is arranged on a tower and a number of insulating supporting plates which are arranged on the tower according to the direction of leading down. OPGW is successively arranged on each insulating supporting plate according to the direction of leading down and then is wound on the residual cable rack. Each insulating sheath is sheathed on the arrangement location of OPGW and each insulating supporting plate. According to the utility model, OPGW terminal grounding residual current can be eliminated; and the problem of burn, which is caused by residual current when OPGW terminal grounding leading down is carried out, is avoided.
Description
Technical field
The utility model relates to Optical Fiber composite overhead Ground Wire, particularly OPGW terminal ground connection residual flow isolating and protecting device.
Background technology
Optical Fiber composite overhead Ground Wire (optical fiber composite overhead ground wire is hereinafter to be referred as OPGW) has the dual-use function of ground wire and communications optical cable concurrently, is installed in the top of the shaft tower of power overhead network.Because the high reliability of OPGW, superior machinery, electric property and good and economic and practicality make it become a kind of important means of building the power optical fiber communication network at transmission line.
OPGW mainly adopts the mode by basic ground connection at present.Because of electromagnetic induction and the static coupling phenomenon of OPGW and three-phase conducting wire, under this earthing mode, at terminal shaft tower place, there is tens of amperes earth current in OPGW.As direct use metal wire clamp the OPGW terminal is drawn down, in each wire clamp position, exist wire clamp to shaft tower path to divide flow problem, be OPGW terminal ground connection residual flow.The existence of this residual flow makes the contact resistance of metal wire clamp and OPGW contact point along with the electric current heating problem rectify not to increase, and then has aggravated the heating problem of metal wire clamp and OPGW contact point.Because the OPGW withstand temperature is limited, the burn problem takes place in the time of may causing OPGW terminal ground connection again.
The utility model content
Technical problem to be solved in the utility model just provides Optical Fiber composite overhead Ground Wire terminal ground connection residual flow isolating and protecting device, can eliminate OPGW terminal ground connection residual flow, avoids OPGW terminal ground connection to draw the problem that following time burns because of residual flow.
For solving the problems of the technologies described above; the utility model is achieved through the following technical solutions: a kind of OPGW terminal ground connection residual flow isolating and protecting device; comprise insulating sleeve, be installed on the surplus cable frame on the shaft tower and arrange a plurality of insulation support plates that are installed on the shaft tower by drawing down direction; described OPGW is wound on the surplus cable frame after direction is installed on each insulation support plate successively down by drawing, and described insulating sleeve is sheathed on the installed position of OPGW and each insulation support plate.
On the basis of the above, the utility model can be done following improvement:
Also comprise the surplus cable frame insulation booth that is installed on the shaft tower, described surplus cable is placed in the surplus cable frame insulation booth, so that the surplus cable of insulation protection.
The bottom of surplus cable frame insulation booth described in the utility model has a plurality of for the through hole that ventilates and leak.
The utility model also can be done following improvement:
The two ends of insulation support plate described in the utility model are arranged with the first arch securing member and the second arch securing member, and the described first arch securing member is pressed on the insulation support plate after being placed on the insulating sleeve on OPGW surface; The two ends of the described second arch securing member lock onto on the shaft tower after wearing insulation support plate.
The thickness of insulating sleeve described in the utility model is 2mm ~ 8mm, is beneficial to realize insulation protection OPGW.
The distance of the first arch securing member described in the utility model and the second arch securing member is 100mm ~ 300mm, is beneficial to isolate OPGW, consolidates and eliminates OPGW terminal ground connection residual flow.
Compared with prior art, the utility model technology has following beneficial effect:
Setting is isolated in insulation by insulation support plate, insulating sleeve and surplus cable frame insulation booth of the present utility model; make OPGW terminal ground connection residual flow isolating and protecting device can cut off the OPGW terminal and draw being electrically connected between following time and the metal wire clamp; eliminate the OPGW terminal and draw the ground connection residual flow problem in following time; the OPGW burn problem of avoiding the OPGW terminal to draw the heating in following time and cause thus, thereby the communication reliability of assurance electric power system.
Description of drawings
Fig. 1 is mounting structure schematic diagram of the present utility model;
Fig. 2 is the mounting structure schematic diagram of the utility model insulation support plate;
Fig. 3 is arranged with the schematic diagram of insulating sleeve for the utility model OPGW;
Fig. 4 is the structural representation of the surplus cable frame of the utility model insulation booth.
Among the figure: 1, insulation support plate; 11, the first arch securing member; 12, the second arch securing member; 2, OPGW; 3, surplus cable frame; 4, surplus cable frame insulation booth; 41, through hole; 5, shaft tower; 6, insulating sleeve.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
A kind of OPGW terminal ground connection residual flow isolating and protecting device as Figure 1-3; comprise insulating sleeve 6, be installed on the surplus cable frame 3 on the shaft tower 5 and arrange a plurality of insulation support plates 1 that are installed on the shaft tower 5 by drawing down direction; OPGW 2 is wound on the surplus cable frame 3 after direction is installed on each insulation support plate 1 successively down by drawing; insulating sleeve 6 is sheathed on the installed position of OPGW 2 and each insulation support plate 1, namely is wrapped in OPGW 2 top layers under waiting to draw.Wherein, insulation support plate 1 adopts epoxide resin material, and length is 150mm, and width is 100mm, and thickness is 5mm, and industrial frequency withstand voltage is not less than 2kV; Insulating sleeve 6 is the hollow circular cylinder insulating material, and internal diameter equals to wait to draw the external diameter of OPGW down, and thickness is 5mm, also can select in 2mm ~ 8mm scope, and industrial frequency withstand voltage is not less than 2kV.
As shown in Figure 4, the surplus cable frame 3 of present embodiment places in the surplus cable frame insulation booth 4, and surplus cable frame insulation booth 4 is installed on the shaft tower 5, so that the surplus cable of insulation protection OPGW.Have a plurality ofly for the through hole 41 that ventilates and leak in the bottom of surplus cable frame insulation booth 4, through hole 41 is beneficial to the ventilation of OPGW2 on the surplus cable frame 3, also can prevent ponding.Surplus cable frame insulation booth 4 adopts insulating material to make, and as plastics or epoxy moulding, opening is arranged at surplus cable frame insulation booth 4 tops, for put into the surplus cable of OPGW from the top.Surplus cable frame insulation booth 4 sizes and surplus cable frame 3 sizes are suitable, and wall thickness is 5mm, also can select in the scope of 2mm ~ 8mm, and industrial frequency withstand voltage is not less than 2kV.
The distance that the two ends of the insulation support plate 1 of present embodiment are arranged with the first arch securing member 11 and the second arch securing member, 12, the first arch securing members 11 and the second arch securing member 12 is 120mm, also can select in the scope of 100mm ~ 300mm.The first arch securing member 11 is pressed on the insulation support plate 1 after being placed on the insulating sleeve 6 on OPGW 2 surfaces, and namely OPGW 2 is installed on the insulation support plate 1 by the first arch securing member 11.The two ends of the second arch securing member 12 were locked on shaft tower 5 after wearing insulation support plate 1, and namely insulation support plate 1 is to be installed on the shaft tower 5 by the second arch securing member 21.
Execution mode of the present utility model is not limited thereto; according to foregoing of the present utility model; utilize ordinary skill knowledge and the customary means of this area; do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite; the utility model can also be made modification, replacement or the change of other various ways, all drops within the utility model rights protection scope.
Claims (6)
1. OPGW terminal ground connection residual flow isolating and protecting device; it is characterized in that: comprise insulating sleeve, be installed on the surplus cable frame on the shaft tower and arrange a plurality of insulation support plates that are installed on the shaft tower by drawing down direction; described OPGW is wound on the surplus cable frame after direction is installed on each insulation support plate successively down by drawing, and described insulating sleeve is sheathed on the installed position of OPGW and each insulation support plate.
2. OPGW terminal ground connection residual flow isolating and protecting device according to claim 1, it is characterized in that: also comprise the surplus cable frame insulation booth that is installed on the shaft tower, described surplus cable is placed in the surplus cable frame insulation booth.
3. OPGW terminal ground connection residual flow isolating and protecting device according to claim 2 is characterized in that: the bottom of described surplus cable frame insulation booth has a plurality of for the through hole that ventilates and leak.
4. according to each described OPGW terminal ground connection residual flow isolating and protecting device of claim 1-3, it is characterized in that: the two ends of described insulation support plate are arranged with the first arch securing member and the second arch securing member, and the described first arch securing member is pressed on the insulation support plate after being placed on the insulating sleeve on OPGW surface; The two ends of the described second arch securing member were locked on shaft tower after wearing insulation support plate.
5. OPGW terminal ground connection residual flow isolating and protecting device according to claim 4, it is characterized in that: the thickness of described insulating sleeve is 2mm ~ 8mm.
6. OPGW terminal ground connection residual flow isolating and protecting device according to claim 4, it is characterized in that: the distance of the described first arch securing member and the second arch securing member is 100mm ~ 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708508 CN203071531U (en) | 2012-12-18 | 2012-12-18 | OPGW terminal grounding residual current isolation protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708508 CN203071531U (en) | 2012-12-18 | 2012-12-18 | OPGW terminal grounding residual current isolation protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071531U true CN203071531U (en) | 2013-07-17 |
Family
ID=48770282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708508 Expired - Lifetime CN203071531U (en) | 2012-12-18 | 2012-12-18 | OPGW terminal grounding residual current isolation protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706870A (en) * | 2017-01-20 | 2018-02-16 | 国家电网公司 | Cable fitting and installation method more than a kind of double cable OPGW of transformer station's single pole |
-
2012
- 2012-12-18 CN CN 201220708508 patent/CN203071531U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706870A (en) * | 2017-01-20 | 2018-02-16 | 国家电网公司 | Cable fitting and installation method more than a kind of double cable OPGW of transformer station's single pole |
| CN107706870B (en) * | 2017-01-20 | 2020-06-02 | 国家电网公司 | Single-rod double-cable OPGW (optical fiber composite overhead ground wire) residual cable installation fitting and installation method for transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
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| CX01 | Expiry of patent term |