CN205176073U - Arrester live test drainage pincers - Google Patents

Arrester live test drainage pincers Download PDF

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Publication number
CN205176073U
CN205176073U CN201521026927.9U CN201521026927U CN205176073U CN 205176073 U CN205176073 U CN 205176073U CN 201521026927 U CN201521026927 U CN 201521026927U CN 205176073 U CN205176073 U CN 205176073U
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CN
China
Prior art keywords
drainage
clamp
lightning arrester
handle
pincers
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.)
Active
Application number
CN201521026927.9U
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Chinese (zh)
Inventor
汪锐
王志清
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.)
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Sichuan 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.)
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Publication date
Application filed by State Grid Corp of China SGCC, State Grid Sichuan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201521026927.9U priority Critical patent/CN205176073U/en
Application granted granted Critical
Publication of CN205176073U publication Critical patent/CN205176073U/en
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Anticipated expiration legal-status Critical

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Abstract

The utility model provides an arrester live test drainage pincers, is in including clamp, inside insulator spindle, the setting that is the cavity structure drainage line in the cavity structure with act as go -between, the drainage line with it is insulating each other to act as go -between, the one end of insulator spindle is connected a handle of clamp, the one end of drainage line is connected electrically conductive the keeping silent of clamp, the other end of drainage line is connected the setting and is in the screw rod of insulator spindle surface, the one end of acting as go -between is connected another handle of clamp, the other end of acting as go -between is connected the setting and is in the insulator spindle surface pull the handle. The utility model provides an arrester live test drainage pincers can realize arrester ground connection and draw lower row of remote intercepting of going up leakage current, guarantees tester's personal safety.

Description

Lightning arrester live-line test drainage clamps
Technical field
The utility model relates to power test technical field of tools, particularly a kind of lightning arrester live-line test drainage pincers.
Background technology
Lightning arrester endangers for the protection of electrical equipment from height transient overvoltage during thunderbolt and limit a kind of electrical equipment of time of afterflow.In order to ensure the personal safety in the daily tour of tester, reach 110kV/1.5m, 220kV/3m and above safe distance that electric power safety working regulation requires, in transformer station, the 110kV of outdoor installation and the lightning arrester of above are generally installed on 2m and above concrete stake or framework.The upper termination high-voltage connection of lightning arrester, lower end arranges ground connection through discharge counter by under the grounding lead that is installed on concrete stake surface.
Lightning arrester live-line test needs to draw operating leakage current from the top of discharge counter to be tested.Because the discharge counter of 110kV lightning arrester and part 220kV lightning arrester is installed on concrete stake top, distance ground is even higher more than 2.2m, and in the live testing of reality, tester needs to use insulating ladder to carry out operation of ascending a height.On the one hand, it is even not enough that operation of ascending a height causes tester and surrounding electrification in high voltage position safe distance to reduce, when tester arrange under grounding lead carry out clamp operation time, if the existing defects of operating lightning arrester own, leakage current under grounding lead on row exceedes human-body safety electric current, arranges the risk causing personal injury under there is touching grounding lead; On the other hand, the tester be on insulating ladder is all high-voltage charged bodies above around, and these electrified bodys can produce induced voltage with it tester by stray capacitance, if induced voltage exceedes human safety voltage, can cause personal injury equally.
Therefore, in lightning arrester live-line test for current 110kV and above out of doors, the insulating ladder adopted is ascended a height under clamp method can not ensure that in live testing, tester is in the environment of safe voltage and safety current, there is great security risk.
Utility model content
To be solved in the utility model is the problem that in lightning arrester live-line test, tester's personal safety cannot be protected.
For solving the problem, the utility model provides a kind of lightning arrester live-line test drainage to clamp, and comprises clamp, the inner insulating bar for cavity structure, is arranged on drainage thread in described cavity structure and bracing wire, described drainage thread and described bracing wire mutually insulated; One end of described insulating bar connects a handle of described clamp, one end of described drainage thread connects the conduction jaw of described clamp, the other end of described drainage thread connects the screw rod being arranged on described insulating bar outside surface, one end of described bracing wire connects another handle of described clamp, and the other end of described bracing wire connects the tow handle being arranged on described insulating bar outside surface.
The lightning arrester live-line test drainage pincers adopting the utility model to provide, when carrying out live testing to lightning arrester, tester does not need clamp of ascending a height, only external testing line need be connected on described screw rod, then hand-held described insulating bar, and the conduction jaw of described clamp is opened by tow handle, clip on the ground connection drainage row above discharge counter, unclamp the conduction jaw that tow handle closes described clamp, leakage current under grounding lead on row produces induction current on described conduction jaw, described induction current transfers to external testing line by described drainage thread and described screw rod, thus realize the remote intercepting that arrester ground draws the upper leakage current of lower row.The lightning arrester live-line test drainage pincers that the utility model provides realize away from high electric field position by insulating bar, increase the safe distance of tester with electrification in high voltage position, greatly reduce the induced voltage suffered by tester, underwriter is in below safe voltage., insulate between the drainage portion clamped due to drainage and operation part meanwhile, avoid the big current injury of arranging under tester touches grounding lead and causing.
Optionally, described conduction jaw comprises two symmetrical arc copper jaws.
Optionally, the handle of described clamp is insulated handle.
Optionally, described drainage thread is the multiply annealed copper wire of surface insulation.
Optionally, described bracing wire is steel wire pull line.Steel wire pull line has good intensity and toughness, can ensure that drainage clamps described steel wire pull line after a number of uses and can not rupture.
Optionally, described lightning arrester live-line test drainage pincers also comprise metal joint, and described metal joint connects the other end of described insulating bar.By arranging described metal joint, when the distance of described insulating bar is not enough, be convenient to increase extra insulating bar at the other end of described insulating bar.
Compared with prior art, the utility model has the following advantages:
The lightning arrester live-line test drainage pincers that the utility model provides, realize away from high electric field position by insulating bar, increase the safe distance of tester with electrification in high voltage position, greatly reduce the induced voltage suffered by tester, ensure that tester is in below safe voltage.Further, owing to insulating between the drainage portion of testing clamp and operation part, the big current injury of arranging under tester touches grounding lead and causing is avoided.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lightning arrester live-line test drainage pincers of the utility model embodiment.
Mark and corresponding parts title in accompanying drawing: 11, clamp; 12, insulating bar; 13, drainage thread; 14, bracing wire; 15, screw rod; 16, tow handle; 17, metal joint.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Fig. 1 is the structural representation of the lightning arrester live-line test drainage pincers of the utility model embodiment, described lightning arrester live-line test drainage pincers comprise clamp 11, the inner insulating bar 12 for cavity structure, are arranged on drainage thread 13 in described cavity structure and bracing wire 14, described drainage thread 13 and described bracing wire 14 mutually insulated.In the present embodiment, described drainage thread 13 is the multiply annealed copper wire of surface insulation, and described bracing wire 14 is steel wire pull line.
Described clamp 11, for intercepting leakage current, comprises conduction jaw and a pair insulated handle.In the present embodiment, described conduction jaw comprises two symmetrical arc copper jaws.One end of described insulating bar 12 connects a handle of described clamp 11, one end of described drainage thread 13 connects the conduction jaw of described clamp 11 through one end of described insulating bar 12, the other end of described drainage thread 13 connects through the sidewall of described insulating bar 12 screw rod 15 being arranged on described insulating bar 12 outside surface, and described screw rod 15 is for connecting external testing line when testing.One end of described bracing wire 14 connects another handle of described clamp 11 through one end of described insulating bar 12, and the other end of described bracing wire 14 connects through the sidewall of described insulating bar 12 tow handle 16 being arranged on described insulating bar 12 outside surface.The structure of described tow handle 16 and the brake handle of bicycle similar, when testing the leakage current on ground connection drainage row, press described tow handle 16, described bracing wire 14 drives another handle of described clamp 11, distance between two handles reduces, described conduction jaw is opened, is clipped in well on ground connection drainage row.
When the lightning arrester live-line test drainage pincers adopting the present embodiment to provide carry out live testing to lightning arrester, only external testing line need be connected on described screw rod 15, then hand-held described insulating bar 12, and the conduction jaw of described clamp 11 is opened by described tow handle 16, clip on the ground connection drainage row above discharge counter, unclamp the conduction jaw that described tow handle 16 closes described clamp 11, leakage current under grounding lead on row produces induction current on described conduction jaw, described induction current transfers to external testing line by described drainage thread 13 and described screw rod 15, thus realize the remote intercepting that arrester ground draws the upper leakage current of lower row, ensure the personal safety of tester.
In the present embodiment, described lightning arrester live-line test drainage pincers also comprise metal joint 17, and described metal joint 17 connects the other end of described insulating bar 12.By arranging described metal joint 17, when needing the lightning arrester installation site of test higher, extra insulating bar can be increased by described metal joint 17 at the other end of described insulating bar 12.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.

Claims (6)

1. lightning arrester live-line test drainage pincers, it is characterized in that, comprise clamp (11), the inner insulating bar (12) for cavity structure, be arranged on drainage thread (13) in described cavity structure and bracing wire (14), described drainage thread (13) and described bracing wire (14) mutually insulated;
One end of described insulating bar (12) connects a handle of described clamp (11), one end of described drainage thread (13) connects the conduction jaw of described clamp (11), the other end of described drainage thread (13) connects the screw rod (15) being arranged on described insulating bar (12) outside surface, one end of described bracing wire (14) connects another handle of described clamp (11), and the other end of described bracing wire (14) connects the tow handle (16) being arranged on described insulating bar (12) outside surface.
2. lightning arrester live-line test drainage pincers according to claim 1, it is characterized in that, described conduction jaw comprises two symmetrical arc copper jaws.
3. lightning arrester live-line test drainage pincers according to claim 1, it is characterized in that, the handle of described clamp (11) is insulated handle.
4. lightning arrester live-line test drainage pincers according to claim 1, is characterized in that, the multiply annealed copper wire that described drainage thread (13) is surface insulation.
5. lightning arrester live-line test drainage pincers according to claim 1, it is characterized in that, described bracing wire (14) is steel wire pull line.
6. lightning arrester live-line test drainage pincers according to claim 1, it is characterized in that, also comprise metal joint (17), described metal joint (17) connects the other end of described insulating bar (12).
CN201521026927.9U 2015-12-10 2015-12-10 Arrester live test drainage pincers Active CN205176073U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521026927.9U CN205176073U (en) 2015-12-10 2015-12-10 Arrester live test drainage pincers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521026927.9U CN205176073U (en) 2015-12-10 2015-12-10 Arrester live test drainage pincers

Publications (1)

Publication Number Publication Date
CN205176073U true CN205176073U (en) 2016-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521026927.9U Active CN205176073U (en) 2015-12-10 2015-12-10 Arrester live test drainage pincers

Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449943A (en) * 2017-07-27 2017-12-08 华中科技大学 A kind of earth clamp for lightning arrester live-line test
CN107607752A (en) * 2017-11-06 2018-01-19 国网四川省电力公司绵阳供电公司 A kind of potable metal Zinc oxide lightning arrester live-line test current clamp and operating method
CN108321725A (en) * 2018-04-04 2018-07-24 国网冀北电力有限公司廊坊供电公司 A kind of overhead line electricity testing grounding ring wire clamp insulating shield extracting tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449943A (en) * 2017-07-27 2017-12-08 华中科技大学 A kind of earth clamp for lightning arrester live-line test
CN107607752A (en) * 2017-11-06 2018-01-19 国网四川省电力公司绵阳供电公司 A kind of potable metal Zinc oxide lightning arrester live-line test current clamp and operating method
CN108321725A (en) * 2018-04-04 2018-07-24 国网冀北电力有限公司廊坊供电公司 A kind of overhead line electricity testing grounding ring wire clamp insulating shield extracting tool

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