CN203839878U - Separable full-insulation lightning arrester for cable protection - Google Patents

Separable full-insulation lightning arrester for cable protection Download PDF

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Publication number
CN203839878U
CN203839878U CN201420273637.3U CN201420273637U CN203839878U CN 203839878 U CN203839878 U CN 203839878U CN 201420273637 U CN201420273637 U CN 201420273637U CN 203839878 U CN203839878 U CN 203839878U
Authority
CN
China
Prior art keywords
lightning arrester
strip
plug
cable
snap close
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420273637.3U
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Chinese (zh)
Inventor
吴爱军
乔跃忠
陈海昆
陈华林
顾金弟
陈宇
李昂
王强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI ZHIMENG ELECTRIC POWER TECHNOLOGY CO LTD
State Grid Shanghai Electric Power Co Ltd
Original Assignee
SHANGHAI ZHIMENG ELECTRIC POWER TECHNOLOGY CO LTD
State Grid Shanghai Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI ZHIMENG ELECTRIC POWER TECHNOLOGY CO LTD, State Grid Shanghai Electric Power Co Ltd filed Critical SHANGHAI ZHIMENG ELECTRIC POWER TECHNOLOGY CO LTD
Priority to CN201420273637.3U priority Critical patent/CN203839878U/en
Application granted granted Critical
Publication of CN203839878U publication Critical patent/CN203839878U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses separable full-insulation lightning arrester for cable protection. The lightning arrester comprises a chassis, a knife switch, pillar insulators, an upper contact, a lower contact, a locking device and an arrester arranged between the pillar insulators. The pillar insulators are symmetrically arranged at the two sides of the chassis respectively; one end of the knife switch is hinged with the lower contact, and the other end of the knife switch is a free end and is contacted with the upper contact; the locking device is arranged at the free end of the knife switch and on the pillar insulators; the lower end of the arrester is fixedly arranged on the chassis, and the upper end of the arrester is provided with a contact finger; the knife switch is provided with a contact piece matched with the contact finger; the upper contact is connected with an aerial cable; and the lower contact is connected with a ground-entering cable. According to the full-insulation lightning arrester, the multiple functions of an isolation switch/ drop-out fuse and the lightning arrester are combined, thereby providing a plurality of economic benefits and social benefits, such as low cost, reduced construction intensity, convenient maintenance and inspection and rapid underground cable fault point searching as well as reduced power failure areas, reduced power failure time, and system safety and reliability and the like.

Description

Protection cable is used can deciliter all insulation lightning arrester
Technical field
The utility model relates to a kind of lightning arrester, and relating in particular to a kind of protection cable use can deciliter all insulation lightning arrester.
Background technology
According to state net 10kV overhead transmission line standardized designs specification, enter in the process on ground at overhead wire at present, main configuration and installation are that overhead transmission line passes through wire clamp outconnector, GW9 Series Switch-disconnector or fuse switch that the configuration of connecting line below is installed, process lightning arrester arrives the link of underground cable again.Wherein corresponding configuration is installed nearly three overarm braces and anchor ear, multiple binding post, make thus the electric device distribution on shaft tower messy, improved construction cost and intensity, and be not easy to maintenance inspection, while breaking down, greatly reduce the efficiency of looking up the fault point.
Summary of the invention
The purpose of this utility model; provide exactly a kind of protection cable with can deciliter all insulation lightning arrester in order to address the above problem; the major function of isolating switch/fuse switch and lightning arrester is united two into one; further optimize the messy situation of shaft tower; reduce costs; reduce construction intensity, convenient maintenance checks particularly aspect fast finding underground cable fault point, have original advantage.
The purpose of this utility model is achieved in that
A kind of protection cable of the present utility model is with can deciliter all insulation lightning arrester, be installed on shaft tower, described head of mast is provided with insulator and bottom is provided with into ground cable, overhead transmission line is set up in the top of described insulator, described all insulation lightning arrester comprises underframe, plug-in strip, post insulator, upper contact head, lower contact, locker, described post insulator is located at the both sides of described underframe symmetrically, one end of described plug-in strip and lower contact are hinged, the other end is free end and contacts with described upper contact head, described locker is installed on the free end and post insulator of described plug-in strip, described all insulation lightning arrester also comprises the lightning arrester of being located between described post insulator, the lower end of this lightning arrester is fixed on described underframe, and its upper end is provided with fingertip, on described plug-in strip, be located at the contact coordinating with described fingertip,
Described upper contact head is by being connected with described aerial cable with the cable of the general joint of peace;
Described lower contact with described in enter ground cable be connected.
Above-mentioned one protection cable is with can deciliter all insulation lightning arrester, wherein, described locker comprises support, pulling buckle, snap close, back-moving spring and spacer pin, described support comprises the horizontal segment on the post insulator top that is provided with upper contact head described in being fixed on and extension upwards, on described upwards extension, offer opening and a lockhole for holding described snap close, described pulling buckle is articulated on described plug-in strip by the first rotating shaft, and be arranged with axle sleeve in this first rotating shaft, described pulling buckle comprises the draw ring of the portion of being located thereon, be positioned at the lower hole of its underpart and be positioned at the finger of choosing in this left side, lower hole, described snap close is articulated in by the second rotating shaft on the free end of described plug-in strip, described snap close comprises being positioned at its right side and being resisted against described pulling buckle chooses the stop block portion on finger, and the latch hook that is positioned at this snap close bottom and coordinates with the lockhole of described support, one end of described back-moving spring is erected on the axle sleeve of described the first rotating shaft, the other end is installed with in described snap close stop block portion, described spacer pin is located on described plug-in strip, and be arranged in described lower hole, the middle part of described back-moving spring is resisted against the below of described spacer pin.
At present, be mainly G (H) W9-12/630 isolating switch, PR (H) W10 series fuse switch and YH5WS2-17/50 metal oxide arrester at 10kV overhead transmission line with the product configuring on shaft tower, their technical parameter and contrast of the present utility model please see the following form:
From above various product technical parameter contrast table, can find out, the utlity model has good technical performance and the multiple function in conjunction with isolating switch/fuse switch and lightning arrester.For realizing, further optimizing of 10kV overhead transmission line shaft tower laid to favourable basis.
The utility model can be power grid construction bring reduce costs, reduce construction intensity, convenient maintenance checks and fast searching underground cable fault point, reduce power failure area, shorten interruption duration, many economic benefits and the social benefits such as system security reliability are provided.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model is installed on the schematic diagram on shaft tower.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, there is shown the utility model protection cable with can deciliter all insulation lightning arrester 1, comprise underframe 14, plug-in strip 11, post insulator 15, upper contact head 12, lower contact 13, locker, post insulator 15 is located at the both sides of underframe 14 symmetrically, one end of plug-in strip 11 and lower contact 13 are hinged, the other end is free end and contacts with upper contact head 12, the utility model all insulation lightning arrester 1 also comprises the lightning arrester 16 of being located between post insulator 15, the lower end of this lightning arrester 16 is fixed on underframe 14, and its upper end is provided with fingertip 161, on plug-in strip 11, be located at the contact 162 coordinating with fingertip 161,
Locker comprises support 17, pulling buckle, snap close 18, back-moving spring 110 and spacer pin 194, support 17 comprises and is fixed on the horizontal segment on post insulator 15 tops that are provided with upper contact head 12 and extension upwards, upwards on extension, offer opening and a lockhole 171 for holding snap close 18, pulling buckle is articulated on plug-in strip 11 by the first rotating shaft 193, and be arranged with axle sleeve 195 in this first rotating shaft 193, pulling buckle comprises the draw ring 191 of the portion of being located thereon, be positioned at the lower hole 192 of its underpart and be positioned at choosing of these 192 left sides, lower hole and refer to 196, snap close 18 is articulated on the free end of plug-in strip 11 by the second rotating shaft 181, snap close 18 comprises being positioned at its right side and being resisted against pulling buckle chooses the stop block portion 183 referring on 196, and the latch hook 182 that is positioned at these snap close 18 bottoms and coordinates with the lockhole 171 of support 17, one end of back-moving spring 110 is erected on the axle sleeve 195 of the first rotating shaft 193, the other end is installed with in snap close 18 stop block portions 183, spacer pin 194 is located on plug-in strip 11, and be arranged in lower hole 192, the middle part of back-moving spring 110 is resisted against the below of spacer pin 194.
Refer to Fig. 2, the utility model all insulation lightning arrester 1 is installed on shaft tower 4, this 4, shaft tower top is provided with insulator 41 and bottom is provided with into ground cable 2, overhead transmission line 3 is set up in the top of insulator 41, upper contact head 12 by with peace general joint 32 cable 31 be connected with aerial cable 3, lower contact 13 with enter cable 2 be connected.
In the time of needs sub-switching operation, insulation hooks excellent crotch and penetrates in the draw ring 191 of pulling buckle and pull downwards, while just beginning, due to the locking relation between snap close 18 latch hooks 182 and the lockhole 171 of support 17, plug-in strip 11 keeps not moving, pulling buckle is rotated (because the diameter in lower hole 192 is greater than the diameter of spacer pin 194 around fulcrum the first rotating shaft 193, therefore suitable displacement space of the interior existence in spacer pin 194 hole 192 under pulling buckle), back-moving spring 110 is compacted, the finger 196 stop block portions 183 of stirring snap close 18 that choose of pulling buckle front end, snap close 18 is rotated around the second rotating shaft 181, the latch hook 182 of snap close 18 spins off from the lockhole 171 of support 17, left-hand end and the combined floodgate stop block of snap close 18 offset simultaneously, thereby pull open plug-in strip 11, plug-in strip 11 free ends are separated with upper contact head 12, plug-in strip 11 continues to rotate around the first rotating shaft 193.The contact 162 being fixed together with plug-in strip 11 has also been realized and having been separated with the fingertip 161 being fixed on lightning arrester 16, just complete whole separating brake process when plug-in strip 11 is displaced to while stopping grade screens 131, between support 17 and fingertip 161, formed a visible isolation fracture.Lightning arrester 16 is also realized and being separated with conduction major loop.
When closing operation, under the effect at back-moving spring 110, the lower hole 192 of pulling buckle is close to the contact-making surface of spacer pin 194.The operating physical force of insulated hook rod acts directly on plug-in strip 11 like this, makes plug-in strip 11 around hinged end rotation, and first the contact 162 being fixed on plug-in strip 11 contacts realization electrical connection with the fingertip 161 being fixed on lightning arrester 16.Plug-in strip 11 continues rotation, and plug-in strip 11 contacts with upper contact head 12, has realized the electrical connection of conduction major loop.In this process, the latch hook 182 of snap close 18 can slip in the lockhole 171 of support 17 around the second rotating shaft 181 under the effect of back-moving spring 110, thereby realize the locking of plug-in strip 11 and upper contact head 12, guarantee product in the time of angle mount, upside-down mounting because not threading off and cause the accident under own wt, vibration and electrodynamic effect.
In the time of "on" position, high-pressure side electric current is by upper contact head, and plug-in strip is connected conducting with aerial cable, with the earth insulation, completes the conveying of electric power.In the time there is thunderbolt or switching overvoltage, the lightning arrester that presents at ordinary times insulation characterisitic shows its excellent nonlinear characteristic, its inner good metal oxide resistance presents by high resistance and transforms to low resistance fast, the small increase of voltage can cause that electric current increases the sudden change of several orders of magnitude, now lightning arrester is suddenlyd change to conductor characteristics by insulator characteristic, overvoltage discharges the earth by lightning arrester, in the time that voltage-drop arrives the threshold values of resistor disc, there is inversion process, the small reduction of voltage can cause the sharply increase of resistance, lightning arrester becomes insulator characteristic again by conductor characteristics, thereby maintain the normal operating conditions of electric power system.
Meanwhile, the utility model has also possessed the function abundanter than traditional lightning arrester.First feature: in the time that circuit carries out maintenance overhaul, can open plug-in strip and form visible fracture and guarantee site operation personnel's personal safety, play the effect of isolating switch.If coordinate load cutter to operate, can also implement live line working, with the fastest speed, minimum power failure range, load is spun off from electrical network; Second largest feature: when the circuit long period is during in non-loaded situation, also can open plug-in strip, lightning arrester is departed from from the voltage of continuous service, reduce lightning arrester ager process, improve its useful life and power supply reliability; The third-largest feature shows in the time that underground cable breaks down, and can bring unrivaled advantage for help fast searching fault point.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims (2)

1. a protection cable is with can deciliter all insulation lightning arrester, be installed on shaft tower, described head of mast is provided with insulator and bottom is provided with into ground cable, overhead transmission line is set up in the top of described insulator, described all insulation lightning arrester comprises underframe, plug-in strip, post insulator, upper contact head, lower contact, locker, described post insulator is located at the both sides of described underframe symmetrically, one end of described plug-in strip and lower contact are hinged, the other end is free end and contacts with described upper contact head, described locker is installed on the free end and post insulator of described plug-in strip, it is characterized in that, described all insulation lightning arrester also comprises the lightning arrester of being located between described post insulator, the lower end of this lightning arrester is fixed on described underframe, and its upper end is provided with fingertip, on described plug-in strip, be located at the contact coordinating with described fingertip,
Described upper contact head is by being connected with described aerial cable with the cable of the general joint of peace;
Described lower contact with described in enter ground cable be connected.
2. a kind of protection cable as claimed in claim 1 is with can deciliter all insulation lightning arrester, it is characterized in that, described locker comprises support, pulling buckle, snap close, back-moving spring and spacer pin, described support comprises the horizontal segment on the post insulator top that is provided with upper contact head described in being fixed on and extension upwards, on described upwards extension, offer opening and a lockhole for holding described snap close, described pulling buckle is articulated on described plug-in strip by the first rotating shaft, and be arranged with axle sleeve in this first rotating shaft, described pulling buckle comprises the draw ring of the portion of being located thereon, be positioned at the lower hole of its underpart and be positioned at the finger of choosing in this left side, lower hole, described snap close is articulated in by the second rotating shaft on the free end of described plug-in strip, described snap close comprises being positioned at its right side and being resisted against described pulling buckle chooses the stop block portion on finger, and the latch hook that is positioned at this snap close bottom and coordinates with the lockhole of described support, one end of described back-moving spring is erected on the axle sleeve of described the first rotating shaft, the other end is installed with in described snap close stop block portion, described spacer pin is located on described plug-in strip, and be arranged in described lower hole, the middle part of described back-moving spring is resisted against the below of described spacer pin.
CN201420273637.3U 2014-05-27 2014-05-27 Separable full-insulation lightning arrester for cable protection Expired - Fee Related CN203839878U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420273637.3U CN203839878U (en) 2014-05-27 2014-05-27 Separable full-insulation lightning arrester for cable protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420273637.3U CN203839878U (en) 2014-05-27 2014-05-27 Separable full-insulation lightning arrester for cable protection

Publications (1)

Publication Number Publication Date
CN203839878U true CN203839878U (en) 2014-09-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103972838A (en) * 2014-05-27 2014-08-06 上海置盟电力科技有限公司 Separable all-insulation lightning arrester for protecting cable
CN104362025A (en) * 2014-11-25 2015-02-18 辽宁华隆电力科技有限公司 Radian column matched low-voltage knife switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103972838A (en) * 2014-05-27 2014-08-06 上海置盟电力科技有限公司 Separable all-insulation lightning arrester for protecting cable
CN104362025A (en) * 2014-11-25 2015-02-18 辽宁华隆电力科技有限公司 Radian column matched low-voltage knife switch

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140917

Termination date: 20210527

CF01 Termination of patent right due to non-payment of annual fee