CN210120246U

CN210120246U - Auxiliary device and lap-joint mechanism for electrified match of power cable

Info

Publication number: CN210120246U
Application number: CN201921245599.XU
Authority: CN
Inventors: 林周强; 卫庆; 唐静涛; 李所坤; 李权林; 朱国福; 卫梁; 沈飚
Original assignee: Honghe Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Honghe Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-02-28
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a power cable takes fire with electricity and uses auxiliary device and bridging mechanism aims at providing a power cable takes fire with electricity and uses's auxiliary device and bridging mechanism that can improve the overlap joint efficiency. The auxiliary device comprises a cylindrical copper bar for hanging the bypass flexible cable, blocking shoulders arranged at two ends of the copper bar, a connecting plate arranged at the end part of one of the blocking shoulders, a first connecting hole arranged on the connecting plate, and a second connecting hole which is arranged on the connecting plate and has a different aperture from that of the first connecting hole; the connecting plate and the copper bar are positioned on the same straight line, and the first connecting hole and the second connecting hole are used for connecting cable joints with different specifications; the copper bar, the blocking shoulder and the connecting plate are integrated. The utility model discloses can improve the reliability of electric wire netting power supply, increase the economic benefits of power supply enterprise.

Description

Auxiliary device and lap-joint mechanism for electrified match of power cable

Technical Field

The utility model belongs to the technical field of the power equipment technique and specifically relates to a power cable takes auxiliary device and overlap joint mechanism of usefulness with electricity.

Background

In urban construction, an overhead line is unsafe and not beautiful and is greatly influenced by environmental conditions. The cable circuit is not easily affected by the surrounding environment and pollution, the power transmission reliability is high, the insulation distance between the lines is small, the occupied area is small, and no interference is caused to electric waves. When the cable line is laid underground, the cable line does not occupy an overhead line channel, is safe and reliable, and is convenient to manage. The advantages of cabling, especially in traffic hub areas or dense houses, in high-rise buildings and in factory areas, are very significant. The cable line has the biggest advantage of large power transmission capacity and is beneficial to improving the power factor of a power system, but under the same voltage, the capacitance current per kilometer of the cable line is 25 times (three-core cable) or 50 times (single-core cable) of that of an overhead line, and the capacitance current per kilometer of the currently adopted polyvinyl chloride hinge cable is increased by about 20% compared with that of an oil-immersed type cable. The technical guideline for live-wire operation of distribution lines (GB/T18857-2008) 10.2 specifies: when a capacitive load such as a cable or a capacitor is applied to a connected line, an arc extinguishing tool such as an arc extinguishing lever is used to open or close the lead line. The multipurpose bypass load switch arc extinction in the actual work, namely, the mode of setting a bypass system is adopted to break and connect a cable lead, and in the bypass setting process, a bypass flexible cable and a cable joint cannot be directly connected, so that great difficulty is brought to the operation, potential safety hazards exist, and the operation efficiency is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough that the purpose aims at overcoming prior art and exists, provides one kind and can reduce the connection degree of difficulty, improves the power cable of connection efficiency and takes the auxiliary device and the overlap joint mechanism of usefulness of doing things with electricity.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

an auxiliary device for electrified match of a power cable comprises a cylindrical copper bar for hanging a bypass flexible cable, blocking shoulders arranged at two ends of the copper bar, a connecting plate arranged at the end part of one of the blocking shoulders, a first connecting hole arranged on the connecting plate, and a second connecting hole which is arranged on the connecting plate and has a different aperture from that of the first connecting hole; the connecting plate and the copper bar are positioned on the same straight line, and the first connecting hole and the second connecting hole are used for connecting cable joints with different specifications; the copper bar, the blocking shoulder and the connecting plate are integrated.

Preferably, the copper rod has a diameter of 20mm and a length of 55 mm.

Preferably, the catch has a diameter of 30mm and a length of 5 mm.

Preferably, the first connecting hole and the second connecting hole have a hole diameter of 15mm and 10mm, respectively.

A lap joint mechanism for electrified match of power cables is used for connecting bypass flexible cables and cable joints; the bypass flexible cable is provided with an opening for hanging; the cable joint is provided with a through hole for connection; the lapping mechanism comprises the auxiliary device and a screw rod which is arranged on the first connecting hole or the second connecting hole in a penetrating way; the cable joint is arranged on the screw in a penetrating way; first nuts are screwed on the screw rod and positioned on two sides of the cable joint; second nuts are screwed on the screw rods and positioned on two sides of the connecting plate; partition plates are sleeved between the adjacent first nuts and second nuts on the screw; the bypass flexible cable is hung on the copper bar.

Compared with the prior art, the utility model has the advantages of as follows:

1. the utility model discloses can reduce the electrified degree of difficulty of taking fire of power cable, improve the electrified efficiency of taking fire of power cable, lapped security also can improve, has eliminated the injury of cable capacitive current to the operation personnel.

2. The utility model provides high power supply reliability adopts this auxiliary device to take the fire operation, also can adopt live working when the fire is taken to super long cable, has avoided the power failure operation, directly improves power supply reliability, increases the economic benefits of power supply enterprise.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an auxiliary device.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic structural view of the lapping mechanism.

Fig. 4 is a top view of fig. 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.

Example 1

The auxiliary device for electrified match of the power cable shown in fig. 1-2 comprises a cylindrical copper bar 1 for hanging a bypass flexible cable 20, blocking shoulders 2 arranged at two ends of the copper bar 1, a connecting plate 3 arranged at the end part of one of the blocking shoulders 2, a first connecting hole 4 arranged on the connecting plate 3, and a second connecting hole 5 which is arranged on the connecting plate 3 and has a different aperture from that of the first connecting hole 4; the connecting plate 3 and the copper bar 1 are positioned on the same straight line, and the first connecting hole 4 and the second connecting hole 5 are used for connecting cable connectors with different specifications; the copper bar 1, the shoulder 2 and the connecting plate 3 are integrated.

In the embodiment, the diameter of the copper rod 1 is 20mm, the length of the copper rod is 55mm, the copper rod 1 is preferably processed by a red copper rod, the red copper has excellent plasticity, is easy to be processed by hot pressing and cold pressing, has the conductivity second to that of silver, and has good corrosion resistance in the atmosphere. The diameter of the retaining shoulder 2 is 30mm, the length of the retaining shoulder 2 is 5mm, and the retaining shoulder 2 can prevent the hooking part of the bypass flexible cable 20 from sliding off in operation. The aperture of the first connecting hole 4 and the aperture of the second connecting hole 5 are respectively 15mm and 10mm, and the first connecting hole and the second connecting hole are used for connecting cable connectors 10 of different models in an overlapping mode.

Example 2

The lap joint mechanism for live match of the power cable shown in fig. 3-4 is used for connecting the bypass flexible cable 20 and the cable joint 10; the bypass flexible cable 20 has a hooking opening; the cable joint 10 is provided with a through hole for connection; the lapping mechanism comprises the auxiliary device in the embodiment 1 and a screw rod 6 which is arranged on the first connecting hole 4 or the second connecting hole 5 in a penetrating way; the cable joint 10 is arranged on the screw rod 6 in a penetrating way; first nuts 7 are screwed on the screw 6 and positioned at two sides of the cable joint 10; second nuts 8 are screwed on the screw 6 and positioned on two sides of the connecting plate 3; a partition plate 9 is sleeved between the adjacent first nut 7 and the second nut 8 on the screw 6; the bypass flexible cable 20 is hung on the copper bar 1.

The auxiliary device of the embodiment has the total length of 155mm and the maximum diameter of 30mm, and can bear the through flow of 200A. The auxiliary device changes the operation mode of cable fire-taking, so that the operation of cable fire-taking is quicker and more efficient, meanwhile, the harm of cable capacitive current to operators is eliminated, the safety of the operators is ensured, and the reliability of power supply can be improved.

The installation mode is as follows:

in the 10kV cable fire-taking operation, the auxiliary device and the cable joint are connected together firstly, the auxiliary device is made to overhang, then an opening for hooking the bypass flexible cable is hung on the copper rod, the other end of the bypass flexible cable is connected to the 10kV main line, the bypass load switch is closed after the nuclear phase is correct, the cable joint and the drainage wire are connected at the moment, the drainage wire is finally overlapped on the 10kV main line, the bypass system can be detached after the through-flow is normal, and the auxiliary device is not detached. The 10kV cable fire-lapping auxiliary device is adopted, the cable fire lapping is carried out by a bypass flexible cable operation method, and the damage of capacitive current to operators in the cable fire lapping operation is eliminated through the characteristic of 'same division and same combination' of a bypass load switch.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an auxiliary device that power cable takes fire usefulness with electricity which characterized in that: the device comprises a cylindrical copper bar for hanging a bypass flexible cable, blocking shoulders arranged at two ends of the copper bar, a connecting plate arranged at the end part of one of the blocking shoulders, a first connecting hole arranged on the connecting plate, and a second connecting hole which is arranged on the connecting plate and has a different aperture from that of the first connecting hole; the connecting plate and the copper bar are positioned on the same straight line, and the first connecting hole and the second connecting hole are used for connecting cable joints with different specifications; the copper bar, the blocking shoulder and the connecting plate are integrated.

2. The auxiliary device for hot-line lapping of a power cable according to claim 1, wherein: the diameter of the copper rod is 20mm, and the length of the copper rod is 55 mm.

3. The auxiliary device for hot-line work of a power cable according to claim 1 or 2, wherein: the diameter of the blocking shoulder is 30mm, and the length of the blocking shoulder is 5 mm.

4. The auxiliary device for hot-line work of a power cable according to claim 1 or 2, wherein: the aperture of the first connecting hole and the aperture of the second connecting hole are respectively 15mm and 10 mm.

5. A lap joint mechanism for electrified match of power cables is used for connecting bypass flexible cables and cable joints; the bypass flexible cable is provided with an opening for hanging; the cable joint is provided with a through hole for connection; the method is characterized in that: the auxiliary device comprises the auxiliary device as claimed in claim 1 or 2, and a screw rod arranged on the first connecting hole or the second connecting hole in a penetrating way; the cable joint is arranged on the screw in a penetrating way; first nuts are screwed on the screw rod and positioned on two sides of the cable joint; second nuts are screwed on the screw rods and positioned on two sides of the connecting plate; partition plates are sleeved between the adjacent first nuts and second nuts on the screw; the bypass flexible cable is hung on the copper bar.