阅读说明：本技术 一种配电网架空线路防雷限压装置 (Lightning protection voltage limiting device for overhead line of power distribution network ) 是由 冯启俊 刘佳陇 马承志 冯标虹 郝琰 黄柏彬 陈康 李书学 林科星 王德帅 于 2021-06-24 设计创作，主要内容包括：本发明为一种配电网架空线路防雷限压装置,包括塔架、接地端和安装在塔架顶部的接闪器,所述接闪器通过引下线与所述接地端连接,所述塔架上安装有正面开设有凹槽的保护壳,所述凹槽内安装有对所述凹槽进行遮挡的输送带,所述凹槽的上下两端分别设有带动所述输送带运动的传动组件,所述保护壳侧壁的上下两端分别开设有穿线槽,所述引下线通过穿线槽安装在所述输送带之间,所述输送带正面开设有观察口,所述观察口处设有吊钩,所述吊钩与所述输送带连接,本装置本装置不仅能对引下线进行保护,还不影响对引下线的检修和更换,大大提高作业效率。(The invention relates to a lightning protection and voltage limiting device for an overhead line of a power distribution network, which comprises a tower frame, a grounding end and a lightning receptor arranged at the top of the tower frame, wherein the lightning receptor is connected with the grounding end through a down conductor, the tower frame is provided with a protective shell with a groove on the front surface, a conveyer belt for shielding the groove is arranged in the groove, the upper end and the lower end of the groove are respectively provided with a transmission assembly for driving the conveyer belt to move, the upper end and the lower end of the side wall of the protective shell are respectively provided with a threading groove, the down conductor is arranged between the conveyer belts through the threading grooves, the front surface of the conveyer belt is provided with an observation port, the observation port is provided with a lifting hook, and the lifting hook is connected with the conveyer belt.)

1. The utility model provides a distribution network overhead line lightning protection voltage limiting device, includes pylon, earthing terminal and installs the arrester at the pylon top, the arrester pass through the downlead with the earthing terminal is connected, a serial communication port, install on the pylon and openly set up the notched protective housing, it is right to install in the recess the conveyer belt that the recess sheltered from, the upper and lower both ends of recess are equipped with the drive respectively the transmission assembly of conveyer belt motion, the threading groove has been seted up respectively at the upper and lower both ends of protective housing lateral wall, the downlead passes through the threading groove and installs between the conveyer belt, the viewing aperture has openly been seted up to the conveyer belt, viewing aperture department is equipped with the lifting hook, the lifting hook with the conveyer belt is connected.

2. The lightning protection and voltage limitation device for the overhead line of the power distribution network of claim 1, wherein the transmission assembly comprises a main roller shaft, an auxiliary roller shaft and a driving mechanism, the main roller shaft is installed at the lower part of the protective shell, the auxiliary roller shaft is installed at the upper part of the protective shell, the conveying belt is sleeved on the main roller shaft and the auxiliary roller shaft, and the main roller shaft is connected with the driving mechanism.

3. The lightning protection and voltage limitation device for the overhead line of the power distribution network of claim 2, wherein the driving mechanism comprises a hexagon nut, the hexagon nut is installed on the outer wall of the protective shell, a through hole is formed in the side wall of the protective shell, a connecting shaft is installed in the through hole, the connecting shaft is rotatably connected with the inner wall of the through hole, and the hexagon nut is coaxially connected with the main roller shaft through the connecting shaft.

4. The lightning protection and voltage limiting device for the overhead line of the power distribution network as claimed in claim 1, wherein a sealing plate for opening and closing the wiring slot is disposed on a side wall of the protection casing, the sealing plate is hinged to an outer wall of the protection casing, and a threading hole is formed in the center of the sealing plate.

5. The lightning protection and voltage limitation device for the overhead line of the power distribution network as claimed in claim 1, wherein the lightning receptor is an insulating composite lightning arrester.

6. The lightning protection and voltage limitation device for the overhead line of the power distribution network as claimed in claim 1, wherein a plurality of drainage holes are formed in the bottom of the protective shell.

7. The lightning protection and voltage limitation device for the overhead line of the power distribution network as claimed in claim 2, wherein the driving mechanism comprises a worm wheel, a worm and a hexagon nut, the worm wheel is fixedly sleeved on the main roller shaft, two ends of the worm are rotatably connected with the inner wall of the groove, the worm wheel is meshed with the worm and is connected with the worm, the hexagon nut is installed on the outer wall of the protective shell, a through hole is formed in the side wall of the protective shell, a connecting shaft is installed in the through hole and is rotatably connected with the inner wall of the through hole, and the hexagon nut is coaxially connected with the worm through the connecting shaft.

Technical Field

The invention belongs to the technical field of lightning protection equipment, and particularly relates to a lightning protection voltage limiting device for an overhead line of a power distribution network.

Background

The distribution line is the basis of the power system and is responsible for the important function of the normal operation of the power system, the biggest threat of the power transmission and distribution line is thunder and lightning, the thunder and lightning is a natural phenomenon of atmospheric activity and cannot be controlled so far. The existing lightning protection device mainly comprises a lightning protection grounding device, a down lead and a lightning arrester, wherein a lightning arresting metal component is in good electrical connection with the down lead and the grounding device, and the lightning arrester has the function that when lightning directly strikes the lightning arrester, lightning current rapidly leaks to the ground from the lightning arrester through the down lead and the grounding device, so that cables are protected. When the down conductor is in heavy wind, the down conductor is easy to swing and repeatedly impacts the tower frame, so that safety accidents are easy to cause, and meanwhile, the loss of the down conductor is accelerated. If the downlead is fixed, the fixing piece must be removed again when the downlead is overhauled, and the difficulty in replacing the downlead is greatly increased.

Disclosure of Invention

Therefore, the lightning protection and voltage limiting device for the overhead line of the power distribution network, provided by the invention, can protect the down conductor, does not influence the maintenance and replacement of the down conductor, and greatly improves the operation efficiency.

The technical scheme of the invention is realized as follows:

the invention provides a lightning protection and voltage limiting device for an overhead line of a power distribution network, which comprises a tower frame, a grounding end and a lightning receptor arranged at the top of the tower frame, wherein the lightning receptor is connected with the grounding end through a down conductor, the tower frame is provided with a protective shell with a groove on the front surface, a conveyer belt for shielding the groove is arranged in the groove, the upper end and the lower end of the groove are respectively provided with a transmission assembly for driving the conveyer belt to move, the upper end and the lower end of the side wall of the protective shell are respectively provided with a threading groove, the down conductor is arranged between the conveyer belts through the threading grooves, the front surface of the conveyer belt is provided with an observation port, the observation port is provided with a lifting hook, and the lifting hook is connected with the conveyer belt.

Preferably, the transmission assembly comprises a main roll shaft, an auxiliary roll shaft and a driving mechanism, the main roll shaft is installed at the lower part of the protective shell, the auxiliary roll shaft is installed at the upper part of the protective shell, the conveying belt is sleeved on the main roll shaft and the auxiliary roll shaft, and the main roll shaft is connected with the driving mechanism.

Preferably, actuating mechanism includes hexagon nut, hexagon nut installs the protective housing outer wall, the through-hole has been seted up to the protective housing lateral wall, install the connecting axle in the through-hole, the connecting axle with the through-hole inner wall rotates to be connected, hexagon nut passes through the connecting axle with home roll axle coaxial coupling.

Preferably, the side wall of the protective shell is provided with a sealing plate for opening and closing the wiring groove, the sealing plate is hinged to the outer wall of the protective shell, and the center of the sealing plate is provided with a threading hole.

Preferably, the lightning receptor is an insulating composite lightning arrester.

Preferably, the bottom of the protective shell is provided with a plurality of drainage holes.

Preferably, actuating mechanism includes worm wheel, worm and hexagon nut, the worm wheel is fixed cup joint on the home roll axle, the both ends of worm with the recess inner wall rotates to be connected, the worm wheel with the worm meshing is connected, hexagon nut installs the protective housing outer wall, the through-hole has been seted up to the protective housing lateral wall, install the connecting axle in the through-hole, the connecting axle with the through-hole inner wall rotates to be connected, hexagon nut passes through the connecting axle with worm coaxial coupling.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a lightning protection voltage limiting device for an overhead line of a power distribution network. When the downlead is installed, penetrate the downlead inside the protective housing, with downlead hookup in the lifting hook, carry the downlead to the tower top through conveyer belt cooperation lifting hook, the operating personnel who is located the tower top takes out the downlead from the protective housing in the threading groove of upper end, be connected to on the arrester, the bottom of downlead is connected to on the ground connection end, accomplish the connection of lightning protection device, the protective housing then protects the downlead, prevent that the downlead from receiving wind-force swing back and forth, cause the wearing and tearing of self or pylon, reciprocate the viewing aperture through rotating the conveyer belt, conveniently realize maintenance work to whole section downlead. The device can protect the down lead, does not influence the maintenance and the replacement of the down lead, and greatly improves the operation efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

fig. 2 is a schematic front view of a protective housing according to an embodiment of the invention;

FIG. 3 is a front sectional view of a protective shell according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a protective housing according to an embodiment of the invention;

FIG. 5 is a side cross-sectional view of a protective shell in accordance with one embodiment of the present invention;

FIG. 6 is a schematic front view of a protective housing according to a second embodiment of the present invention;

fig. 7 is a front sectional view of a protective case in a second embodiment of the present invention.

In the figure, 1 tower, 2 grounding ends, 3 lightning receptors, 4 downleads, 5 protective cases, 6 conveyer belts, 7 threading grooves, 8 observation ports, 9 lifting hooks, 10 main roll shafts, 11 auxiliary roll shafts, 12 hexagon nuts, 13 connecting shafts, 14 sealing plates, 15 threading holes, 16 drain holes, 17 worm wheels and 18 worms.

Detailed Description

In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 4, the invention provides a lightning protection and voltage limiting device for an overhead line of a power distribution network, which comprises a tower frame 1, a grounding end 2 and a lightning receptor 3 arranged at the top of the tower frame 1, wherein the lightning receptor 3 is connected with the grounding end 2 through a down conductor 4, a protective shell 5 with a groove on the front surface is arranged on the tower frame 1, a conveying belt 6 for shielding the groove is arranged in the groove, transmission components for driving the conveying belt 6 to move are respectively arranged at the upper end and the lower end of the groove, threading grooves 7 are respectively arranged at the upper end and the lower end of the side wall of the protective shell 5, the down conductor 4 is arranged between the conveying belts 6 through the threading grooves 7, an observation port 8 is arranged on the front surface of the conveying belt 6, a lifting hook 9 is arranged at the observation port 8, and the lifting hook 9 is connected with the conveying belt 6.

Connect arrester 3 and earthing terminal 2 through downlead 4, connect the thunder and lightning through arrester 3 and with its leading-in to the ground in, realize the lightning protection effect to distribution network overhead line. When installing downlead 4, penetrate inside protective housing 5 with downlead 4's top from threading groove 7 of protective housing 5 lower extreme, be located between conveyer belt 6, fix downlead 4's top into cyclic annular through the rope fastening, rotate conveyer belt 6 and make viewing aperture 8 remove to protective housing 5 lower extreme, hook-joint downlead 4's top in lifting hook 9, at this moment, rotate conveyer belt 6, cooperation lifting hook 9 carries downlead 4 to the top of pylon 1 upwards, the operating personnel who is located the top of pylon 1 takes downlead 4 out from protective housing 5 in threading groove 7 of upper end, be connected to lightning receptor 3, downlead 4's bottom is connected to on earthing terminal 2, accomplish the connection of lightning protection device, protective housing 5 then protects downlead 4, prevent downlead 4 from receiving wind power swing back and forth, cause self or pylon 1's wearing and tearing. When the downlead 4 needs to be overhauled, an overhauling tool can penetrate through the observation port 8 to detect the downlead 4, and the observation port 8 is moved up and down by rotating the conveying belt 6, so that the overhauling work of the whole section of the downlead 4 is conveniently realized; when the downlead 4 needs to be replaced, the top end of the downlead 4 is disconnected from the lightning receptor 3, the top end of the downlead 4 is fixed into a ring shape again through the rope buckle, the top end of the downlead 4 extends into the threading groove 7 at the upper end and is hooked on the lifting hook 9, the conveying belt 6 and the lifting hook 9 are driven by the transmission assembly to move downwards to return to the ground, and then the new downlead 4 is installed again according to the first installation step. The device can protect the down lead 4, does not influence the maintenance and replacement of the down lead 4, and greatly improves the operation efficiency.

The transmission assembly comprises a main roller shaft 10, an auxiliary roller shaft 11 and a driving mechanism, wherein the main roller shaft 10 is installed on the lower portion of the protective shell 5, the auxiliary roller shaft 11 is installed on the upper portion of the protective shell 5, the conveying belt 6 is sleeved on the main roller shaft 10 and the auxiliary roller shaft 11, and the main roller shaft 10 is connected with the driving mechanism.

Actuating mechanism includes hexagon nut 12, hexagon nut 12 is installed 5 outer walls of protective housing, the through-hole has been seted up to 5 lateral walls of protective housing, install connecting axle 13 in the through-hole, connecting axle 13 with the through-hole inner wall rotates to be connected, hexagon nut 12 passes through connecting axle 13 with home roll axle 10 coaxial coupling. Accessible manual spanner or electric spanner drive hexagon nut 12 and rotate, and hexagon nut 12 drives home roll axle 10 through connecting axle 13 and rotates, and home roll axle 10 realizes conveyer belt 6 through 6 cooperation secondary roller axles 11 of conveyer belt and rotates, can carry out whole section maintenance to downlead 4 through the lift of viewing aperture 8, can hang through lifting hook 9 and connect downlead 4, and the convenience is changed downlead 4.

The side wall of the protective shell 5 is provided with a sealing plate 14 for opening and closing the wiring groove, the sealing plate 14 is hinged with the outer wall of the protective shell 5, and the center of the sealing plate 14 is provided with a threading hole 15. When installing downlead 4, subaerial operating personnel passes downlead 4 through the through wires hole 15 of lower extreme closing plate 14 earlier, introduces in protective housing 5, rises behind protective housing 5 top through lifting hook 9, and operating personnel on the pylon 1 takes out downlead 4 from the through wires groove 7 at top earlier, draws down downlead 4 outwards from the through wires hole 15 of upper end closing plate 14 again, seals two upper and lower through wires grooves 7 through closing plate 14 and shelters from, protects downlead 4.

The lightning receptor 3 is an insulated composite lightning arrester, a commercially available HY5WS-17/50 distribution type insulated composite lightning arrester is adopted, an insulator and the lightning arrester are integrally molded, and the lightning arrester is not required to be stripped or punctured during installation, so that the influence of a construction process on an insulated wire is eliminated; when the lightning stroke amplitude is too high, the lightning arrester is broken down, the insulator still has the effect of supporting the conducting wire, the line can continue to run, and the line problem caused by the fault of the lightning arrester can be reduced.

The bottom of the protective shell 5 is provided with the plurality of drain holes 16, rainwater can easily flow into the protective shell 5 from the groove of the protective shell 5 in rainy days, and the rainwater is timely drained through the drain holes 16 at the bottom, so that the down-lead 4 is prevented from being soaked in the water for a long time.

Example two

Referring to fig. 5 to 6, the difference between the first embodiment and the second embodiment is that the driving mechanism includes a worm wheel 17, a worm 18 and a hexagon nut 12, the worm wheel 17 is fixedly sleeved on the primary roller shaft 10, two ends of the worm 18 are rotatably connected with the inner wall of the groove, the worm wheel 17 is meshed with the worm 18, the hexagon nut 12 is installed on the outer wall of the protective shell 5, a through hole is formed in the side wall of the protective shell 5, a connecting shaft 13 is installed in the through hole, the connecting shaft 13 is rotatably connected with the inner wall of the through hole, and the hexagon nut 12 is coaxially connected with the worm 18 through the connecting shaft 13. Accessible manual spanner or electric wrench drive hexagon nut 12 and rotate, and hexagon nut 12 drives worm 18 through connecting axle 13 and rotates, and worm 18 drives the home roll axle 10 through worm wheel 17 and rotates, when realizing the pivoted of conveyer belt 6, worm wheel 17 worm 18 can play the function of preventing the reversal to home roll axle 10, hangs when taking off lead 4 at lifting hook 9, prevents that 4 self gravity of taking off lead from leading to 6 gyrations of conveyer belt, improves transmission assembly's stability.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.