CN112186657B - Method for installing cable intermediate joint - Google Patents
Method for installing cable intermediate joint Download PDFInfo
- Publication number
- CN112186657B CN112186657B CN202011091486.6A CN202011091486A CN112186657B CN 112186657 B CN112186657 B CN 112186657B CN 202011091486 A CN202011091486 A CN 202011091486A CN 112186657 B CN112186657 B CN 112186657B
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- intermediate joint
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- joint
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002955 isolation Methods 0.000 claims abstract description 40
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims abstract description 8
- 210000001503 joint Anatomy 0.000 claims abstract description 7
- 239000010687 lubricating oil Substances 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000011900 installation process Methods 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
A cable intermediate joint installation method comprises the following steps: placing the isolation layer into the inner surface of the intermediate joint; sleeving the intermediate joint on the first cable along the direction that the isolation layer is placed in the intermediate joint until the insulation layer of the first cable is exposed out of the intermediate joint; connecting the first cable with another second cable to be butted; pulling the intermediate joint along the first cable to the direction of the second cable until the insulating layer of the second cable enters the inside of the intermediate joint; the barrier layer is pulled from the middle joint. According to the method provided by the embodiment of the invention, the intermediate connector is isolated from the first cable by using the isolation layer, so that the problem of failure caused by attachment of decarburized particles in the intermediate connector is solved.
Description
Technical Field
The invention belongs to the field of high-voltage power cables, and particularly relates to a method for installing a cable intermediate connector.
Background
With the construction of urbanization and the sharp increase of electric quantity demand, the construction of long-distance high-voltage power transmission is more and more, and the demand of cable accessories is more and more. In cable accessories, the intermediate joint for cable butt joint is difficult to avoid and needs to be used in large quantities.
For the high-voltage power cable intermediate joint, two installation modes are generally adopted, one mode is pre-expansion, and the other mode is sliding installation. When using the installation of sliding type, in the installation, intermediate head main part can with the insulation shield layer direct contact of cable, and the charcoal particle that takes off on the cable insulation shield layer is inside very easily the adhesion intermediate head, influences the performance of intermediate head and cable contact surface, and then causes cable line trouble.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method for installing a cable intermediate joint, which solves the problem that decarburized particles are easy to adhere to the intermediate joint in the installation process.
The method for installing the cable intermediate connector comprises the following steps of: placing the isolation layer into the inner surface of the intermediate joint; sleeving the intermediate connector on the first cable along the direction in which the isolation layer is placed in the intermediate connector until the insulation layer of the first cable is exposed out of the intermediate connector; connecting the first cable with another second cable to be docked; pulling the intermediate joint along the first cable in the direction of the second cable until the insulating layer of the second cable enters the inside of the intermediate joint; the barrier layer is pulled from the middle joint.
The method for installing the cable intermediate connector provided by the embodiment of the invention at least has the following technical effects: in the installation of intermediate head, keep apart intermediate head and first cable through using the isolation layer, the effectual internal surface that has protected the intermediate head can not the adhesion take off the charcoal granule, and then has eliminated because taking off the trouble problem that the charcoal granule attached brings in the intermediate head. The direction of the first cable and the direction of the isolation layer entering the intermediate joint are consistent, the flatness of the isolation layer between the intermediate joint and the first cable is guaranteed, and the protection effect of the isolation layer on the intermediate joint is further improved. After the first cable and the second cable are butted, the intermediate joint is pulled to the insulating layer of the second cable, so that the protection effect of the intermediate joint can be fully exerted.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: and coating lubricating oil on the inner surface and the outer surface of the isolating layer.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: and coating lubricating oil on the outer surface of the first cable.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: and coating lubricating oil on the outer surface of the second cable.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: a guide cone is mounted on a conductor of the first cable.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: connecting the first cable and the second cable using a connecting tube.
According to some embodiments of the invention, the first cable and the second cable are of uniform length in the intermediate joint.
According to some embodiments of the invention, the barrier layer is a polytetrafluoroethylene tape or a nylon tape.
According to some embodiments of the invention, the method for installing the cable intermediate joint further comprises the following steps: the insulation layer is directly attached to the outer surface of the first cable.
According to some embodiments of the invention, the isolation layer is a heat shrink tube.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a simplified assembly of an intermediate connector and cable intermediate connector mounting arrangement according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of an assembly of an intermediate joint, a cable intermediate joint installation device and a first cable according to an embodiment of the invention;
FIG. 4 is a schematic view of a first cable according to an embodiment of the present invention with the insulation layer extending beyond the intermediate joint;
FIG. 5 is a schematic view of a spacer layer configuration according to an embodiment of the present invention;
FIG. 6 is a schematic view of an expanded structure of a barrier layer according to an embodiment of the present invention;
FIG. 7 is a schematic view of the operation of an embodiment of the present invention (barrier layer partial exit);
FIG. 8 is a schematic representation of the operation of an embodiment of the invention (barrier layer fully pulled out).
Reference numerals:
an isolation layer 100,
An intermediate joint 200,
A first cable 300,
A second cable 400,
A guide cone 500,
A first connecting member 600,
A second connecting member 700,
An eye screw 800,
Connecting pipe 910, and pull-up tool 920.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, if there are first, second, third, fourth, etc. described only for the purpose of distinguishing technical features, they are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
A cable intermediate joint installation method according to an embodiment of the present invention is described below with reference to fig. 1 to 8.
Before describing the method of installing the intermediate cable joint according to the embodiment of the present invention, it is first necessary to describe a cable joint installation apparatus used in the embodiment of the present invention.
Referring to fig. 1 to 6, the cable intermediate joint installation device includes: the isolation layer 100, the first connection member 600, the second connection member 700, and the plurality of eye screws 800. An isolation layer 100 for isolating an inner surface of the intermediate joint 200 from an insulation shield layer of the cable; one end of the isolation layer 100 is a folding structure that can be folded outwards along the middle joint 200; a first connection member 600 having a first through-hole provided therein to allow a cable to pass in and out; a second connection member 700 connected to the first connection member 600 in an overlapping manner, the second connection member 700 having a second through hole corresponding to the first through hole; the folded-over structure of the insulation layer 100 is fastened between the connection surfaces of the first connection member 600 and the second connection member 700; the first and second connection members 600 and 700 serve to change the relative positions of the insulation layer 100 and the intermediate joint 200 in common; and a plurality of eye screws 800 provided on the second connection member 700, the plurality of eye screws 800 serving to restrict the positions of the first connection member 600 and the second connection member 700 in common.
The installation method of the cable intermediate connector is completed based on the installation device of the cable intermediate connector.
The method for installing the cable intermediate connector comprises the following steps of:
placing the isolation layer 100 into the inner surface of the intermediate joint 200;
sleeving the intermediate connector 200 on the first cable 300 along the direction in which the isolation layer 100 is placed into the intermediate connector 200 until the insulation layer of the first cable 300 is exposed out of the intermediate connector 200;
connecting the first cable 300 with another second cable 400 to be docked;
pulling the intermediate connector 200 along the first cable 300 toward the second cable 400 until the insulation layer of the second cable 400 enters the interior of the intermediate connector 200;
the isolation layer 100 is pulled out of the intermediate joint 200.
Referring to fig. 1 to 8, the insulation layer 100 is disposed between the intermediate connector 200 and the first cable 300, and it is required to ensure that decarburized particles of the insulation shield layer of the first cable 300 are not adsorbed on the intermediate connector 200 during installation of the intermediate connector 200. The insulation layer 100 may be inserted into the intermediate connector 200 prior to the first cable 300, and then the first cable 300 may be inserted in the same direction until the insulation shielding layer of the first cable 300 is exposed from the other end of the intermediate connector 200, so that the first cable 300 may be connected to the second cable 400. The isolation layer 100 may also be attached or wound on the first cable 300 in advance, and then the isolation layer 100 and the first cable 300 are placed into the intermediate connector 200 together, at this time, after the isolation layer 100 enters the intermediate connector 200 for a certain distance, the isolation layer cannot go deep further because the first connection component 600 contacts the intermediate connector 200 due to the existence of the first connection component 600, and the first cable 300 may go deep further until the insulation shielding layer of the first cable 300 is exposed from the other end of the intermediate connector 200.
After the insulation shielding layer of the first cable 300 is exposed from the other end of the intermediate connector 200, the first cable 300 and the second cable 400 can be butted, and after the butting is completed, the intermediate connector 200 needs to be pulled along the direction from the first cable 300 to the second cable 400, so that the isolation layer 100 can be effectively prevented from being folded when being pulled reversely. And also may be difficult to pull if pulled in the reverse direction because of the resistance provided by the baffle 100. In actual operation, the intermediate connector 200 is pulled toward the second cable 400 by a special tool, and at the same time, the first connecting component 600 and the second connecting component 700 are fixed, so that the intermediate connector 200 is slowly separated from the insulating layer 100 when pulled, and most of the insulating layer 100 is already withdrawn from the intermediate connector 200 when the insulating layers of the first cable 300 and the second cable 400 are completely protected by the intermediate connector 200.
After the above steps are completed, the installation of the intermediate connector 200 is substantially completed, and the isolation layer 100 is simply pulled out from the intermediate connector 200. In practice, the first and second connection members 600 and 700 are driven by pulling the plurality of eye screws 800, and finally the isolation layer 100 is pulled out from between the middle connector 200 and the first cable 300 through the first and second connection members 600 and 700. By this point, the entire installation process of the intermediate joint 200 is completed.
In some embodiments of the present invention, referring to fig. 6 and 7, the pulling of the eye screw 800 is accomplished by a pulling tool 920, and the pulling tool 920 may be a chain block or a pulling rope.
According to the method for installing the cable intermediate joint, in the installation process of the intermediate joint 200, the intermediate joint 200 is isolated from the first cable 300 by the isolating layer 100, so that the inner surface of the intermediate joint 200 is effectively protected from attaching decarburized particles, and the problem of failure caused by the adhesion of the decarburized particles in the intermediate joint 200 is solved. By enabling the first cable 300 and the isolation layer 100 to enter the intermediate connector 200 in the same direction, the flatness of the isolation layer 100 between the intermediate connector 200 and the first cable 300 is guaranteed, and the protection effect of the isolation layer 100 on the intermediate connector 200 is further improved. After the first cable 300 and the second cable 400 are butted, the intermediate joint 200 is pulled over the insulating layer of the second cable 400, and the protective function of the intermediate joint 200 can be sufficiently exerted.
In some embodiments of the present invention, the method for installing the cable intermediate connector further includes the following steps: the inner and outer surfaces of the isolation layer 100 are coated with lubricating oil. The surface of the isolation layer 100 is coated with lubricating oil, so that friction between the isolation layer 100 and the intermediate connector 200 and the first cable 300 can be effectively reduced, and the isolation layer 100 can enter the intermediate connector 200 and can be finally directly pulled out from between the intermediate connector 200 and the first cable 300.
In some embodiments of the present invention, the method for installing a cable intermediate joint further includes the following steps: the outer surface of the first cable 300 is coated with a lubricating oil. The friction between the first cable 300 and the insulation layer 100 may be reduced by applying a lubricating oil to the outer surface of the first cable 300. Usually, the inner and outer surfaces of the isolation layer 100 are coated with the lubricant, so that the friction between the middle joint 200, the first cable 300 and the isolation layer 100 can be reduced to the greatest extent, and the whole installation process is smoother.
In some embodiments of the present invention, the method for installing the cable intermediate connector further includes the following steps: the outer surface of the second cable 400 is coated with a lubricating oil. By smearing lubricating oil on the outer surface of the second cable 400, the resistance of pulling the intermediate joint 200 to the insulating layer of the second cable 400 can be reduced, the cable can be protected, and the cable can be effectively prevented from being damaged in the pulling process.
In some embodiments of the present invention, the method for installing the cable intermediate connector further includes the following steps: a guide cone 500 is mounted on the conductor of the first cable 300. Referring to fig. 3, the penetration of the first cable 300 into the intermediate joint 200 may be facilitated by installing the guide cone 500 on the conductor of the first cable 300, which reduces the resistance of the first cable 300 when penetrating into the intermediate joint 200, and may effectively improve the efficiency of the entire installation. The guide cone 500 is particularly mounted on the insulation layer of the first cable 300.
In some embodiments of the present invention, the method for installing the cable intermediate connector further includes the following steps: the first cable 300 and the second cable 400 are connected using a connection tube 910. Connecting pipe 910 connects first cable 300 and second cable 400, so that on one hand, the strength after connection can be ensured, and first cable 300 and second cable 400 can be pulled conveniently, and on the other hand, the electric conductivity after first cable 300 and second cable 400 are butted can be ensured.
In some embodiments of the present invention, the first cable 300 and the second cable 400 are of uniform length in the intermediate joint 200. The lengths of the first cable 300 and the second cable 400 in the intermediate joint 200 are the same, and the first cable 300 and the second cable 400 can be protected to the maximum extent.
In some embodiments of the present invention, the barrier layer 100 is a teflon tape or a nylon tape. Nylon and polytetrafluoroethylene are common materials, and the price is low, so that the mass production is convenient. Meanwhile, since the isolation layer 100 itself needs to rub against the intermediate connector 200 and the cable for a long time, loss is easily generated, and cost can be effectively reduced by using nylon or teflon, which is cheap. In addition, the surface of the teflon tape or the nylon tape is relatively smooth, which can effectively reduce the friction between the insulation layer 100 and the intermediate connector 200 and the first cable 300.
In some embodiments of the present invention, the method for installing the cable intermediate connector further includes the following steps: the separation layer 100 is directly attached to the outer surface of the first cable 300. In practice, in order to facilitate the insertion of the insulation layer 100 and the first cable 300 into the intermediate connector 200, the insulation layer 100 may be attached to the first cable 300, and then the whole insulation layer and the first cable 300 may be inserted into the intermediate connector 200. When the separation layer 100 is directly attached to the outer surface of the first cable 300, the separation layer 100 may be a teflon tape or a nylon tape.
In some embodiments of the present invention, the surface of the insulation layer 100 is provided with a plurality of through holes, which can increase the flexibility of the insulation layer 100, thereby facilitating the adhesion of the insulation layer 100 to the first cable 300.
In some embodiments of the present invention, the isolation layer 100 may also be directly made of heat shrinkable tubing. The heat shrink tube has the characteristic of preheating shrinkage, and in actual operation, the heat shrink tube is sleeved on the first cable 300, and then the heat shrink tube is in close contact with the first cable 300 through the hot air gun, so that the isolation effect of the isolation layer 100 on the first cable 300 can be ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A cable intermediate joint installation method is characterized by comprising the following steps:
placing the isolation layer into the inner surface of the intermediate joint until the intermediate joint abuts against the first connecting component; one end of the isolation layer is a turnover structure which can be turned outwards along the middle joint, the turnover structure is fastened between the connection surfaces of the first connection part and the second connection part, a first through hole allowing the first cable to pass through is formed in the first connection part, and a second through hole corresponding to the first through hole is formed in the second connection part; the isolating layer is made of polytetrafluoroethylene tape, nylon tape or heat-shrinkable tube;
sleeving the intermediate connector on the first cable along the direction in which the isolation layer is placed in the intermediate connector until the insulation layer of the first cable is exposed out of the intermediate connector;
connecting the first cable with another second cable to be butted;
pulling the intermediate joint along the first cable in the direction of the second cable until the insulating layer of the second cable enters the inside of the intermediate joint;
the barrier layer is pulled from the middle joint.
2. The method of installing a cable intermediate joint according to claim 1, further comprising the steps of: and coating lubricating oil on the inner surface and the outer surface of the isolating layer.
3. The cable intermediate joint installation method of claim 1 or 2, further comprising the steps of: and coating lubricating oil on the outer surface of the first cable.
4. A method of installing a cable intermediate joint according to claim 3, further comprising the steps of: and coating lubricating oil on the outer surface of the second cable.
5. The method of installing a cable intermediate joint according to claim 1, further comprising the steps of: a guide cone is mounted on a conductor of the first cable.
6. The method of installing a cable intermediate joint according to claim 1, further comprising the steps of: connecting the first cable and the second cable using a connecting tube.
7. The method of installing a cable intermediate joint according to claim 1, wherein the first cable and the second cable are of uniform length in the intermediate joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091486.6A CN112186657B (en) | 2020-10-13 | 2020-10-13 | Method for installing cable intermediate joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091486.6A CN112186657B (en) | 2020-10-13 | 2020-10-13 | Method for installing cable intermediate joint |
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| CN112186657A CN112186657A (en) | 2021-01-05 |
| CN112186657B true CN112186657B (en) | 2022-06-07 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255252A (en) * | 1997-04-07 | 2000-05-31 | 皮尔利电缆公司 | Connecting cord junction |
| JP2002027628A (en) * | 2000-07-05 | 2002-01-25 | Fujikura Ltd | Assembly method for rubber-molded one-piece joint |
| CN101262122A (en) * | 2008-04-14 | 2008-09-10 | 浙江万马集团电气有限公司 | An expansion method for cool contraction cable accessory |
| CN103022937A (en) * | 2012-12-21 | 2013-04-03 | 江苏普朗克电力科技有限公司 | Field installation tool for fully precast intermediate joint |
| CN202978136U (en) * | 2012-12-21 | 2013-06-05 | 江苏普朗克电力科技有限公司 | Field installation tool of fully prefabricated intermediate joint |
| CN104201622A (en) * | 2014-09-11 | 2014-12-10 | 江苏安靠智能输电工程科技股份有限公司 | Prefabricated power cable intermediate joint mounting device and method |
| CN104485629A (en) * | 2014-11-26 | 2015-04-01 | 国网河南省电力公司平顶山供电公司 | 10kV power cable docking device and docking method |
| CN205544015U (en) * | 2016-03-01 | 2016-08-31 | 广州供电局有限公司 | Pulling attachment of stress cone |
-
2020
- 2020-10-13 CN CN202011091486.6A patent/CN112186657B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255252A (en) * | 1997-04-07 | 2000-05-31 | 皮尔利电缆公司 | Connecting cord junction |
| JP2002027628A (en) * | 2000-07-05 | 2002-01-25 | Fujikura Ltd | Assembly method for rubber-molded one-piece joint |
| CN101262122A (en) * | 2008-04-14 | 2008-09-10 | 浙江万马集团电气有限公司 | An expansion method for cool contraction cable accessory |
| CN103022937A (en) * | 2012-12-21 | 2013-04-03 | 江苏普朗克电力科技有限公司 | Field installation tool for fully precast intermediate joint |
| CN202978136U (en) * | 2012-12-21 | 2013-06-05 | 江苏普朗克电力科技有限公司 | Field installation tool of fully prefabricated intermediate joint |
| CN104201622A (en) * | 2014-09-11 | 2014-12-10 | 江苏安靠智能输电工程科技股份有限公司 | Prefabricated power cable intermediate joint mounting device and method |
| CN104485629A (en) * | 2014-11-26 | 2015-04-01 | 国网河南省电力公司平顶山供电公司 | 10kV power cable docking device and docking method |
| CN205544015U (en) * | 2016-03-01 | 2016-08-31 | 广州供电局有限公司 | Pulling attachment of stress cone |
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Address after: 410000 No. 223, tongzipo West Road, Lugu Industrial Park, high tech Development Zone, Changsha, Hunan Patentee after: Long Cable Technology Group Co.,Ltd. Country or region after: China Address before: No.223, tongzipo West Road, Lugu Industrial Park, high tech Development Zone, Changsha City, Hunan Province, 410205 Patentee before: CHANGLAN CABLE ACCESSORIES Co.,Ltd. Country or region before: China |