CN216958695U

CN216958695U - Quick access box for cables on medium-voltage overhead line column

Info

Publication number: CN216958695U
Application number: CN202123302527.4U
Authority: CN
Inventors: 王颂锋; 夏畑
Original assignee: Wuhan Lead Electric Power Technology Co ltd
Current assignee: Wuhan Lead Electric Power Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-12
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a medium-voltage overhead cable post cable quick access box, which comprises: the access box comprises an access box body, wherein the lower end of the access box body is provided with an opening, the opening at the lower end of the access box body is provided with a sealing door movably connected with the access box body, and when the sealing door is closed with the opening at the lower end of the access box body, the outer edge of the sealing door is positioned within the outer edge of the lower end of the access box body; protection type quick connector. When unfolding the operation that the bypass does not have a power failure or emergent guarantor power supply, use the quick access box of cable, quick plug connector side design has quick counterpoint self-lock device, can with bypass cable high-speed joint, on satisfying safe and reliable's basis, saved the installation and laid this complicated process of insulating drainage line, great shortening the activity duration. And the quick access box is connected with overhead conductor through the circuit breaker, and when the inlet wire cable is connected, the operation is uncharged, and the operation is safer.

Description

Quick access box for cables on medium-voltage overhead line column

Technical Field

The utility model relates to the technical field of medium-voltage power distribution and bypass operation, in particular to a quick cable access box on a medium-voltage overhead line post.

Background

The distribution network overhaul operation should follow the principle that the energy band is not stopped, in order to further promote the distribution network operation technical level that does not stop, improve the security and the work efficiency of the distribution network operation that does not stop, it becomes urgent to take the research of novel operation equipment technique that does not stop into power supply.

When the uninterrupted operation is carried out, the connection of the cable is very important. Current overhead line need insert the power generation car or when doing bypass operation cable line and connecting, need with the direct overlap joint of cable to overhead conductor, this wherein can involve skinning overhead conductor, takes the bucket arm car or steps on the pole and carry out the overlap joint of cable, and the operation process is complicated, and the spend time is longer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the technical defects and provides a quick access box for cables on a medium-voltage overhead terminal, the access box is preset in advance, a quick connection interface is provided for an overhead line, the quick connection with bypass power supplies such as a power generation car and a bypass cable is realized, a quick plug connector has an alignment self-locking quick plug function, and can be firmly and reliably locked when being connected with a bypass flexible cable, the operation is convenient, the connection time of the bypass cable is shortened, and the bypass operation efficiency is improved.

In order to achieve the above technical object, a technical solution of the present invention provides a quick cable access box on a medium voltage overhead line pole, including:

the access box comprises an access box body, wherein the lower end of the access box body is provided with an opening, the opening at the lower end of the access box body is provided with a sealing door movably connected with the access box body, and when the sealing door is closed with the opening at the lower end of the access box body, the outer edge of the sealing door is positioned within the outer edge of the lower end of the access box body;

the protection type quick connector is three, and is three the equal vertical connection of protection type quick connector in insert on the roof of case body, each the upper end of protection type quick connector all is located insert the upper portion of case body roof, each the lower extreme of protection type quick connector all is located insert the inner chamber of case body, three protection type quick connector corresponds the three-phase electricity on the matching medium voltage overhead terminal.

Furthermore, one side of the sealing door is hinged with one side of the lower end opening of the access box body, the medium-voltage overhead line pole upper cable rapid access box further comprises a pneumatic support rod, one end of the pneumatic support rod is hinged with the other side of the sealing door, and the other end of the pneumatic support rod is hinged with the access box body.

Further, the protection type quick connector comprises: the conductive core shaft is vertically arranged, the upper end of the conductive core shaft is of a stud structure, and the lower end of the conductive core shaft is provided with a first butt joint groove which is coaxially arranged with the conductive core shaft; the insulating layer covers the peripheral surface of the middle section of the conductive mandrel, and a plurality of annular air gaps are sequentially arranged on the peripheral surface of the insulating layer from bottom to top at intervals.

Furthermore, the protection type quick connector also comprises a sealing shell, the sealing shell is arranged in the access box body, the sealing shell is coaxially sleeved on the insulating layer, the upper end of the sealing shell is fixedly connected with the lower end face of the top plate of the access box body, and an annular gap between the sealing shell and the insulating layer is a second butt joint groove.

Furthermore, the sealing shell is provided with an accommodating groove penetrating through the inner peripheral surface and the outer peripheral surface of the sealing shell, a clamping bead is movably arranged in the accommodating groove, one side of the clamping bead can extend out of the inner peripheral surface or the outer peripheral surface of the sealing shell, the protective quick connector further comprises an adjusting part, the adjusting part is sleeved on the sealing shell in a sliding manner, a pressure ring is arranged on the inner peripheral surface of the adjusting part, and when the pressure ring is in contact with the clamping bead, one side of the clamping bead can be pressed into the inner peripheral surface of the sealing shell.

Furthermore, the outside of inserting case body is provided with the installation fin.

Compared with the prior art, the utility model has the beneficial effects that: when unfolding the operation that the bypass does not have a power failure or emergent guarantor power supply, use the quick access box of cable, quick plug connector side design has quick counterpoint self-lock device, can with bypass cable high-speed joint, on satisfying safe and reliable's basis, saved the installation and laid this complicated process of insulating drainage line, great shortening the activity duration. And the quick access box is connected with overhead conductor through the circuit breaker, and when the inlet wire cable is connected, the operation is uncharged, and the operation is safer.

Drawings

Fig. 1 is a schematic perspective view of a cable quick access box on a medium voltage overhead line pole provided by the present invention;

FIG. 2 is a schematic view of the left side of the quick cable access box on a medium voltage overhead line pole according to the present invention;

FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a schematic view of a portion of the enlarged structure at B in FIG. 3;

FIG. 5 is a schematic front view of a cable quick access enclosure mounting location on a medium voltage overhead line pole according to the present invention;

fig. 6 is a schematic side view of a cable quick-access box installation location on a medium-voltage overhead line pole provided by the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 3, the present embodiment provides a quick cable access box on a medium voltage overhead line pole, including: access box body 1 and protection type quick connector 2.

The lower end of the access box body 1 is provided with an opening, the lower end opening of the access box body 1 is provided with a sealing door 3 movably connected with the access box body 1, when the sealing door 3 and the lower end opening of the access box body 1 are closed, the outer edge of the sealing door 3 is positioned within the outer edge of the lower end of the access box body 1, the structure can effectively prevent rainwater from entering the access box body, the protection type quick connector 2 is three, three protection type quick connector 2 all vertically connect in on the roof of access box body 1, the upper end of each protection type quick connector 2 all is located the upper portion of access box body 1 roof, the lower extreme of each protection type quick connector 2 all is located the inner chamber of access box body 1, three protection type quick connector 2 corresponds the three-phase electricity on the matching middling pressure overhead line post.

In this embodiment, one side of the sealing door 3 is hinged to one side of the lower opening of the access box body 1, the medium-voltage overhead line pole cable fast access box further includes a pneumatic stay bar 4, one end of the pneumatic stay bar 4 is hinged to the other side of the sealing door 3, and the other end of the pneumatic stay bar is hinged to the access box body 1.

Referring to fig. 4, the protection type quick connector 2 includes: the electric conduction core shaft 21 is vertically arranged, the upper end of the electric conduction core shaft 21 is a stud structure 21a, and the lower end of the electric conduction core shaft 21 is provided with a first butt joint groove 21b which is coaxially arranged with the electric conduction core shaft 21; the insulating layer 22 covers the outer peripheral surface of the middle section of the conductive mandrel 21, and a plurality of annular air gaps 22a are further formed in the outer peripheral surface of the insulating layer 22 and are sequentially arranged from bottom to top at intervals. The sealing shell 23 is arranged in the access box body 1, the sealing shell 23 is coaxially sleeved on the insulating layer 22, the upper end of the sealing shell 23 is fixedly connected with the lower end face of the top plate of the access box body 1, and an annular gap between the sealing shell 23 and the insulating layer 22 is a second butt joint groove b. The sealing shell 23 is provided with an accommodating groove penetrating through the inner peripheral surface of the sealing shell, the accommodating groove is internally provided with a clamping bead 25 in an inner activity manner, one side of the clamping bead 25 can extend out of the inner peripheral surface or the outer peripheral surface of the sealing shell 23, the adjusting part 24 is slidably sleeved on the sealing shell 23, the inner peripheral surface of the adjusting part 24 is provided with a pressure ring 24a, when the pressure ring 24a contacts with the clamping bead 25, one side of the clamping bead 25 can be pressed into the inner peripheral surface of the sealing shell 23, the adjusting part 24 is connected with a spring piece, the sealing shell 23 is sleeved with the spring piece, and the two ends of the spring piece are respectively abutted against the sealing shell 23 and the adjusting part 24. And a mounting fin c is arranged on the outer side of the access box body 1, and a bolt hole c1 is formed in the mounting fin c.

Referring to fig. 4 and 5, in the present embodiment, three-phase power on the electric pole 5 is connected to the upper ends of three conductive mandrels 21 through three lower guide wires 6 in a one-to-one correspondence manner, and each lower guide wire 6 is provided with a vacuum circuit breaker 7 and an arrester 8.

Medium voltage overhead line post goes up quick access box of cable installs at pole 5, and outdoor terminal side is connected with vacuum circuit breaker 7 through cable (lower guide wire 6), and vacuum circuit breaker 7 is connected with air wire through cable (lower guide wire 6), and under the circumstances at ordinary times, vacuum circuit breaker 7 disconnection, the device is uncharged. When the emergency protection power supply is carried out, the bypass quick-plug cable is connected with the power generation car, and then the circuit breaker is closed, so that the power generation car supplies power to the overhead line load. The lower part of the quick access box is opened, the door is provided with a lock, and the door lock is closed when the quick access box is not used, so that the safety of the device is ensured. The quick access box is supported by the air rod after being opened, and the door plate is fixed by the pneumatic support rod 4 after being opened, so that the operation of operators is convenient.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A quick access box of cable on medium voltage overhead line post which characterized in that includes:

2. The medium voltage overhead line pole cable quick access box according to claim 1, wherein one side of the sealing door is hinged to one side of the lower end opening of the access box body, the medium voltage overhead line pole cable quick access box further comprises a pneumatic stay, one end of the pneumatic stay is hinged to the other side of the sealing door, and the other end of the pneumatic stay is hinged to the access box body.

3. The quick cable-on-pole access box of a medium voltage overhead line of claim 1, wherein the protective quick connector comprises:

the conductive core shaft is vertically arranged, the upper end of the conductive core shaft is of a stud structure, and the lower end of the conductive core shaft is provided with a first butt joint groove which is coaxially arranged with the conductive core shaft;

the insulating layer covers the peripheral surface of the middle section of the conductive mandrel, and a plurality of annular air gaps are sequentially arranged on the peripheral surface of the insulating layer from bottom to top at intervals.

4. The medium voltage overhead line pole cable quick access box according to claim 3, wherein the protective quick connector further comprises a sealing shell, the sealing shell is arranged in the access box body, the sealing shell is coaxially sleeved on the insulating layer, the upper end of the sealing shell is fixedly connected with the lower end face of the top plate of the access box body, and an annular gap between the sealing shell and the insulating layer is a second butt joint groove.

5. The medium voltage overhead line pole cable quick access box according to claim 4, wherein the sealing shell is provided with an accommodating groove penetrating through the inner and outer peripheral surfaces of the sealing shell, a clamping bead is movably arranged in the accommodating groove, one side of the clamping bead can extend out of the inner peripheral surface or the outer peripheral surface of the sealing shell, the protective quick connector further comprises an adjusting part, the adjusting part is slidably sleeved on the sealing shell, the inner peripheral surface of the adjusting part is provided with a pressure ring, and when the pressure ring is in contact with the clamping bead, one side of the clamping bead can be pressed into the inner peripheral surface of the sealing shell.

6. The medium voltage overhead line pole cable quick access box of claim 1, wherein the outside of the access box body is provided with mounting fins.