CN107727893B - Easy-to-replace lightning arrester leakage ammeter suite - Google Patents
Easy-to-replace lightning arrester leakage ammeter suite Download PDFInfo
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- CN107727893B CN107727893B CN201711113637.1A CN201711113637A CN107727893B CN 107727893 B CN107727893 B CN 107727893B CN 201711113637 A CN201711113637 A CN 201711113637A CN 107727893 B CN107727893 B CN 107727893B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Gas-Insulated Switchgears (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an easy-to-replace type lightning arrester leakage current meter suite which comprises a leakage current meter for monitoring the leakage current of a lightning arrester, an insulating block arranged between a grounding down-lead row and the lightning arrester down-lead row, an upper clamping hoop arranged on the insulating block, a lower clamping hoop arranged on the grounding down-lead row, an upper conducting rod and a lower conducting rod for conducting the current, wherein one end of the upper conducting rod is fixedly clasped with the upper clamping hoop, the other end of the upper conducting rod is connected with the leakage current meter, one end of the lower conducting rod is fixedly clasped with the lower clamping hoop, and the other end of the lower conducting rod is connected with the leakage current meter. The invention adopts a mechanical pressure plug-in mounting mode to replace the traditional bolt connection type mounting mode, the replacement work is simple and rapid, and the replacement of the leakage current meter of the lightning arrester is greatly facilitated.
Description
Technical Field
The invention relates to the electric power engineering technology, in particular to a lightning arrester leakage ammeter replacing device.
Background
The lightning arrester is one of the important protective devices for ensuring the safe operation of the power system, and its main function is to limit the lightning overvoltage transmitted from the line or the internal overvoltage caused by the operation. The leakage current meter is a very important reference index for examining the quality of the lightning arrester. Since the arrester is usually similar to an insulator, there is no voltage, and the leakage current is very small, not exceeding about 1 mA. If the current value is increased, the performance of the valve plate in the lightning arrester core body is reduced, the condition of the lightning arrester can be directly reflected by checking the reading of the lightning arrester leakage ammeter, and the important function is played for the safe operation of a power grid, so that the lightning arrester leakage ammeter is required to be replaced and processed immediately when the lightning arrester leakage ammeter has a fault.
The current leakage ammeter is installed in a mode of being connected between a low-voltage end of the lightning arrester and the ground in series. The body is generally fixed in on the arrester bottom stand, and bolt direct connection type is all adopted at electrical connection part both ends. When the leakage ammeter has a fault and needs to be replaced, the grounding short-circuit wire is firstly connected with the leakage ammeter in parallel, so that the leakage current in the replacement period is prevented from damaging workers, and then the leakage ammeter is detached and replaced.
Since the replacement work is usually performed in a charged state, there is a certain risk to the safety of workers, and therefore, the replacement work is usually required to be completed in a short time. However, the conventional installation mode of the leakage ammeter is a bolt connection mode, so that the leakage ammeter is not convenient to disassemble and install, meanwhile, the working environment of part of the leakage ammeter of the lightning arrester is outdoor, and due to the effect of a long-term natural environment, the occurrence of the conditions such as bolt corrosion and the like is prevented from rapidly carrying out replacement work, and the safety of workers is checked.
Disclosure of Invention
The invention aims to solve the technical problem of providing a leakage current meter suite of an arrester, which is convenient for replacing the leakage current meter of the arrester.
In order to solve the technical problems, the invention adopts the following technical scheme: the easy-to-replace type leakage current meter kit for the lightning arrester comprises a leakage current meter for monitoring leakage current of the lightning arrester, an insulating block arranged between the lower row of the grounding down-lead and the lower row of the lightning arrester, an upper clamping hoop arranged on the insulating block, a lower clamping hoop arranged on the lower row of the grounding down-lead, an upper conducting rod and a lower conducting rod for conducting current, wherein one end of the upper conducting rod is fixedly clasped with the upper clamping hoop, the other end of the upper conducting rod is connected with the leakage current meter, one end of the lower conducting rod is fixedly clasped with the lower clamping hoop, and the other end of the lower conducting rod is connected with the leakage current meter.
Preferably, the leakage current meter further comprises a movable grounding piece, wherein the movable grounding piece is provided with a top conductive contact surface which is positioned at the top and is in conductive contact with the upper clamping hoop and a bottom conductive contact surface which is positioned at the bottom and is in conductive contact with the lower grounding guide row, and when the leakage current meter is used at ordinary times, the top conductive contact surface and the bottom conductive contact surface are not in conductive contact with the corresponding upper clamping hoop and the lower grounding guide row.
Preferably, the insulating block is connected with a fixed conductive block which is contacted with the top conductive contact surface of the movable grounding piece when the leakage current meter is removed so as to conduct the leakage current loop.
Preferably, the middle part of the movable grounding piece is hinged and the upper part of the movable grounding piece is connected with a compression spring, under the action of the compression spring, the top conductive contact surface of the movable grounding piece is contacted with the fixed conductive block, and the bottom conductive contact surface of the movable grounding piece is contacted with the grounding down-lead.
Preferably, the grounding device further comprises an insulating top block pushing the movable grounding piece and compressing the compression spring, when the insulating top block is pushed, the movable grounding piece is disconnected from the fixed conductive block and the grounding down-lead, the grounding is disconnected, and when the insulating top block is ejected, the grounding is conducted.
Preferably, the insulating top block comprises a lower acting part acting on the leakage ammeter and an upper acting part acting on the movable grounding piece, and the upper acting part is perpendicular to the lower acting part.
Preferably, the fixed conductive block is provided with a lower protruding part, the movable grounding piece is provided with an upper protruding part, and the lower protruding part and the upper protruding part are provided with conductive contact inclined planes matched with each other.
The invention adopts a mechanical pressure plug-in mounting mode to replace the traditional bolt connection type mounting mode, the replacement work is simple and rapid, and the replacement of the leakage current meter of the lightning arrester is greatly facilitated.
In addition, aiming at the risk existing in the replacement process, the mechanical pressure grounding connection device is installed in a matched mode. Through the mounting means who changes the leakage current meter of arrester to and install integrated equipment additional, fine solution the change potential safety hazard problem of leakage current meter, greatly reduced staff's safety risk.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
fig. 1 is a schematic side view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic structural diagram of an insulating block.
Fig. 4 is a schematic structural diagram of a fixed conductive block.
Fig. 5 is a schematic structural view of the upper clamping hoop.
FIG. 6 is a schematic view of the structure of the upper conductive rod.
Fig. 7 is a schematic structural diagram of an insulating top block.
Fig. 8 is a schematic structural view of the movable grounding member.
In the figure: 1-insulating block, 2-fixed conducting block, 21-lower protrusion, 3-upper clamping hoop, 31-installation part, 32-clamping arm, 4-upper conducting rod, 41-round hole, 5-leakage current meter, 6-lower conducting rod, 7-lower clamping hoop, 8-insulating top block, 81-lower action part, 82-upper action part, 9-compression spring, 10-movable grounding part, 101-step hole, 102-top conducting contact surface, 103-bottom conducting contact surface, 104-pin hole, 11-lightning arrester installation column, 111-installation platform.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the easy-to-replace type lightning arrester leakage current meter kit is installed on a lightning arrester installation column 11, and an installation platform 111 for installing the leakage current meter 5 is arranged on the lightning arrester installation column 11. The easy-to-replace type lightning arrester leakage ammeter external member of this embodiment includes the ammeter 5 of revealing that is used for monitoring the lightning arrester leakage current, installs insulating block 1 between the lower row of ground lead and the lightning arrester lead lower row, installs the last tight staple bolt 3 of clamp on insulating block 1, installs the tight staple bolt 7 of clamp down on the ground lead lower row to and be used for conducting current's last conducting rod 4 and lower conducting rod 6, the one end of going up conducting rod 4 is fixed with the tight staple bolt 3 cohesion of last clamp, and the other end is connected with leakage ammeter 5, the one end of conducting rod 6 is fixed with the tight staple bolt 7 cohesion of clamp down, and the other end is connected with leakage ammeter 5.
The structure of the insulating block 1 shown in fig. 3 is a cube, and a fixing hole is formed in the cube.
Referring to the structure of the upper clamping hoop 3 shown in fig. 5, the upper clamping hoop 3 and the lower clamping hoop 7 have the same structure, and both include an installation portion 31 and clamping arms 32 disposed on both sides of the installation portion 31, the installation portion 31 is provided with fixing holes for installation by screws, and the clamping arms 32 are provided with embracing grooves. The upper clamping hoop 3 and the lower clamping hoop 7 are connected with the upper conductive rod 4 and/or the lower conductive rod 6 through a plug-in type clasping structure, and play a role in fixing and conducting the leakage ammeter 5. The lower clamping hoop 7 is welded on the lower row of the lightning arrester. And the fixing mode of the hoop is adopted, so that the connection reliability can be ensured, and the sufficient contact area can be ensured.
Referring to the structure of the upper conducting rod 4 shown in fig. 6, the upper conducting rod 4 and the lower conducting rod 6 have the same structure, are both cylindrical, and have a circular hole 41 at one end for connecting with a conductive column of the leakage current meter 5.
In addition, the leakage current meter also comprises a movable grounding part 10, and the action of the movable grounding part can connect or disconnect the grounding so as to conveniently replace the leakage current meter 5. Referring to the structure of the movable grounding member 10 shown in fig. 8, the movable grounding member 10 has a top conductive contact surface 102 located at the top and in conductive contact with the upper clamping hoop, and a bottom conductive contact surface 103 located at the bottom and in conductive contact with the lower grounding lead, and when the leakage current meter is in use at ordinary times, neither the top conductive contact surface nor the bottom conductive contact surface is in conductive contact with the corresponding upper clamping hoop and the lower grounding lead. The insulating block 1 is connected with a fixed conductive block 2 which is contacted with a conductive contact surface at the top of the movable grounding part when the leakage ammeter is taken down so as to conduct a leakage current loop.
The middle part of the movable grounding piece 10 is hinged and the upper part is connected with a compression spring 9, and the compression spring 9 provides motion energy for the movable grounding piece 10. When the device normally operates, the compression spring 9 is in a compression state, and the movable grounding piece 10 is disconnected from the upper clamping hoop 3; when the leakage current meter 5 is replaced, the compression spring 9 is extended to connect the movable grounding piece 10 with the upper clamping hoop 3, and leakage current flows through the movable grounding piece.
As shown in fig. 8, the movable grounding member 10 is provided with a stepped hole 101, and one end of the compression spring 9 is fitted into the stepped hole 101. Under the action of the compression spring, the top conductive contact surface of the movable grounding piece is contacted with the fixed conductive block, and the bottom conductive contact surface is contacted with the lower grounding lead. The middle part of the movable grounding part 10 is provided with a through pin hole 104 for realizing the hinge joint at the middle position.
As shown in fig. 4, the fixed conductive block 2 is provided with a lower protrusion 21, the lower protrusion 21 is provided with a conductive block conductive contact surface, as shown in fig. 8, the movable grounding piece 10 is provided with an upper protrusion, the top conductive contact surface 102 is provided on the upper protrusion, so that a conductive contact surface is formed between the lower protrusion 21 and the upper protrusion, and both adopt an inclined plane design, and the bottom conductive contact surface 103 also adopts an inclined plane design. And the inclined plane adopts the design with the width of 30mm, and ensures enough conductive area.
In addition, an insulating top block 8 for pushing the movable grounding member 10 and compressing the compression spring 9 is further included, as shown in fig. 7, the insulating top block 8 includes a lower acting portion 81 acting with the leakage current meter and an upper acting portion 82 acting with the movable grounding member, and the upper acting portion 82 is perpendicular to the lower acting portion 81. When the insulating top block 8 is pushed, the movable grounding piece 10 is disconnected from the fixed conductive block 2 and the lightning arrester down row, the grounding is disconnected, and when the insulating top block 8 is popped up by the compression spring 9, the grounding is conducted. When the insulating top block 8 is pressed by the leakage ammeter 5, the leakage ammeter is connected to a loop for use; when the insulating top block 8 is detached from the leakage current meter 5, the leakage current flows to the lightning arrester down-lead through the movable grounding member 10. When the leakage current meter 5 is used at ordinary times, the two conductive contact surfaces of the movable grounding piece 10 are not in contact with corresponding positions, when the leakage current meter 5 is replaced, the compression spring 9 pushes the movable grounding piece 10 to ensure that the two conductive contact surfaces are in reliable contact, and at the moment, the leakage current flows to the grounding lead-down row through the movable grounding piece 10.
In normal operation, the leakage current flows to: the lightning arrester down-lead → the fixed conducting surface → the upper clamping hoop → the upper conducting rod → the leakage ammeter → the lower conducting rod → the lower clamping hoop → the grounding down-lead.
Leakage current flows when replacing the leakage current meter: the lightning arrester down-lead → the fixed conductive surface → the movable grounding mechanism → the grounding down-lead.
The invention has the beneficial effects that:
the external member can not only meet the normal work of the leakage ammeter, but also has simple operation steps in the replacement engineering, can complete the replacement only by simply pulling out and inserting, has rapid and reliable action, shows excellent safety performance, and plays a reliable guarantee for the safety of workers.
Easy change type arrester reveals ampere meter external member and guarantees that electrical connection is reliable through mechanical design, guarantees equipment safe and reliable operation, and change work simultaneously is simple rapid, has promoted the quality and the work efficiency of maintenance greatly.
If the kit is commercialized, the fault replacement work of the leakage ammeter can be technically, timely and safely improved and guaranteed. The method can be applied to replacing operation of leakage current meters with voltage grades of 220kV and below.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (1)
1. The easy-to-replace type lightning arrester leakage current meter suite is characterized by comprising a leakage current meter for monitoring the leakage current of the lightning arrester, an insulating block arranged between a grounding down-lead row and the lightning arrester down-lead row, an upper clamping hoop arranged on the insulating block, a lower clamping hoop arranged on the grounding down-lead row, an upper conducting rod and a lower conducting rod for conducting the current, wherein one end of the upper conducting rod is fixedly embraced with the upper clamping hoop, the other end of the upper conducting rod is connected with the leakage current meter, one end of the lower conducting rod is fixedly embraced with the lower clamping hoop, the other end of the lower conducting rod is connected with the leakage current meter, the easy-to-replace type lightning arrester leakage current meter suite also comprises a movable grounding piece, the movable grounding piece is provided with a top conductive contact surface positioned at the top and in conductive contact with the upper clamping hoop, a bottom conductive contact surface positioned at the bottom and in conductive contact with the grounding down-lead row, the top conductive contact surface and the bottom conductive contact surface are not in conductive contact with the corresponding upper clamping hoop and the corresponding lower grounding lead, the insulating block is connected with a fixed conductive block which is in contact with the top conductive contact surface of the movable grounding part when the leakage ammeter is taken down so as to conduct a leakage current loop, the middle part of the movable grounding part is hinged and mounted, the upper part of the movable grounding part is connected with a compression spring, the top conductive contact surface of the movable grounding part is in contact with the fixed conductive block under the action of the compression spring, the bottom conductive contact surface is in contact with the lower grounding lead, the movable grounding part is pushed and compresses the insulating top block of the compression spring, when the insulating top block is pushed, the movable grounding part is disconnected from the fixed conductive block and the lower grounding lead, the grounding is disconnected, and when the insulating top block is popped up, the grounding is conducted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113637.1A CN107727893B (en) | 2017-11-13 | 2017-11-13 | Easy-to-replace lightning arrester leakage ammeter suite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113637.1A CN107727893B (en) | 2017-11-13 | 2017-11-13 | Easy-to-replace lightning arrester leakage ammeter suite |
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| Publication Number | Publication Date |
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| CN107727893A CN107727893A (en) | 2018-02-23 |
| CN107727893B true CN107727893B (en) | 2020-04-21 |
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| CN201711113637.1A Active CN107727893B (en) | 2017-11-13 | 2017-11-13 | Easy-to-replace lightning arrester leakage ammeter suite |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759515B (en) * | 2022-02-24 | 2023-08-01 | 国网浙江省电力有限公司金华供电公司 | Manual or automatic integrated device of short circuit leakage ammeter |
| CN115097168B (en) * | 2022-06-23 | 2023-10-31 | 国网湖北省电力有限公司宜昌供电公司 | Multifunctional wiring device for live test of lightning arrester |
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| JP2005195405A (en) * | 2004-01-05 | 2005-07-21 | Kansai Electric Power Co Inc:The | Deterioration diagnostic device and deterioration diagnostic method of lightning arrester |
| CN101834370A (en) * | 2010-05-11 | 2010-09-15 | 张家港友诚科技机电有限公司 | Electrical connection contact sleeve |
| CN203491451U (en) * | 2013-09-06 | 2014-03-19 | 深圳市云家端关爱科技有限公司 | Charging interface structure and electronic watch |
| CN205067580U (en) * | 2015-09-30 | 2016-03-02 | 贵州电网有限责任公司都匀供电局 | Quick assembly disassembly discharge counter |
| CN206059255U (en) * | 2016-09-19 | 2017-03-29 | 贵州电网有限责任公司都匀供电局 | A kind of power failure changes the quick short circuit disconnecting link of discharge counter |
| CN206274606U (en) * | 2016-12-28 | 2017-06-23 | 国网浙江省电力公司湖州供电公司 | A kind of arrester external leakage for being easy to charged for replacement shields anchor ear device |
-
2017
- 2017-11-13 CN CN201711113637.1A patent/CN107727893B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005195405A (en) * | 2004-01-05 | 2005-07-21 | Kansai Electric Power Co Inc:The | Deterioration diagnostic device and deterioration diagnostic method of lightning arrester |
| CN101834370A (en) * | 2010-05-11 | 2010-09-15 | 张家港友诚科技机电有限公司 | Electrical connection contact sleeve |
| CN203491451U (en) * | 2013-09-06 | 2014-03-19 | 深圳市云家端关爱科技有限公司 | Charging interface structure and electronic watch |
| CN205067580U (en) * | 2015-09-30 | 2016-03-02 | 贵州电网有限责任公司都匀供电局 | Quick assembly disassembly discharge counter |
| CN206059255U (en) * | 2016-09-19 | 2017-03-29 | 贵州电网有限责任公司都匀供电局 | A kind of power failure changes the quick short circuit disconnecting link of discharge counter |
| CN206274606U (en) * | 2016-12-28 | 2017-06-23 | 国网浙江省电力公司湖州供电公司 | A kind of arrester external leakage for being easy to charged for replacement shields anchor ear device |
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