CN212483807U - Telescopic arrester resistive current test rod - Google Patents
Telescopic arrester resistive current test rod Download PDFInfo
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- CN212483807U CN212483807U CN202020292083.7U CN202020292083U CN212483807U CN 212483807 U CN212483807 U CN 212483807U CN 202020292083 U CN202020292083 U CN 202020292083U CN 212483807 U CN212483807 U CN 212483807U
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- 238000012360 testing method Methods 0.000 title claims abstract description 121
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000005555 metalworking Methods 0.000 claims description 16
- 244000043261 Hevea brasiliensis Species 0.000 claims description 15
- 229920003052 natural elastomer Polymers 0.000 claims description 15
- 229920001194 natural rubber Polymers 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 11
- 150000004706 metal oxides Chemical class 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a resistance current testing rod of a telescopic arrester. According to the structure of the metal oxide arrester, the resistive current testing principle and the requirements of an operation field, the telescopic arrester resistive current testing rod is composed of a testing rod body (1) and a leakage current lead part (19), and can be applied to the metal oxide arresters with various structures for testing. The testing rod body (1) is telescopic to adapt to different field requirements, and leakage current can be accessed on the ground in the process of testing the resistance current of the lightning arrester, so that high falling accidents are prevented; meanwhile, the electric shock accident is avoided when the leakage current is accessed, the test wiring is simplified, and the time for transferring the operation position is shortened. The telescopic arrester resistive current test rod can effectively improve the security and the detection efficiency of the metal oxide arrester resistive current test and shorten the detection time, and is suitable for metal oxide arresters with various structures.
Description
Technical Field
The invention relates to a special tool for receiving leakage current of a metal oxide arrester when the leakage current of the metal oxide arrester is tested in an electric power system, in particular to a telescopic arrester resistive current testing rod.
Background
When the leakage current of the metal oxide arrester is tested, a common discharge counter is used for sampling current by a short circuit method, a test wire clamp is used for short-circuit of a leakage current meter at the lower end of the metal oxide arrester, and a current signal is obtained through a high-precision current sensor in a test instrument.
At present, no special tool for receiving leakage current in a metal oxide arrester leakage current test exists. The method that the scene usually adopted is that the manual work of ascending a height carries out the short circuit operation, and this kind of method has the risk that the high altitude falls, and easy emergence electric shock accident has great potential safety hazard.
Disclosure of Invention
The invention aims to provide a special tool which is simple in structure and convenient to use and can safely receive the leakage current of the lightning arrester so as to improve the safety and efficiency of the leakage current test of the metal oxide lightning arrester.
In order to achieve the above object, the present invention provides a resistive current testing rod for a telescopic lightning arrester, comprising: the testing rod body and the leakage current lead part; the testing rod body comprises a natural rubber grip, a first section of testing rod, a second section of testing rod, a third section of testing rod and a fourth section of testing rod, the four sections of testing rods are connected in sequence from bottom to top, the four sections of testing rods can be extended or shortened according to needs, and the natural rubber grip is wrapped at the bottom of the first section of testing rod; the leakage current leading part consists of a metal working head, a natural rubber insulating shell, a metal embedded structure, a leakage current down lead and a leakage current leading interface; the metal embedded structure is embedded into the top end of the fourth section of the testing rod, the metal working head is fixed on the metal embedded structure, the leakage current leading-out interface is fixed at the bottom end of the first section of the testing rod, the testing rod body is of a hollow structure and is made of epoxy resin, the leakage current leading-out wire is placed in the hollow testing rod body, one end of the leakage current leading-out wire is connected with the metal embedded structure, and the other end of the leakage current leading-out wire is connected with the leakage current leading-out interface.
In a preferable mode, a bayonet is arranged at a position which is a certain distance away from the top of each section of the first section of the testing rod, the second section of the testing rod and the third section of the testing rod, a self-locking spring pin is arranged at a position which is a certain distance away from the bottom of each section of the second section of the testing rod, the third section of the testing rod and the fourth section of the testing rod, the bayonet of the first section of the testing rod is matched with the self-locking spring pin of the second section of the testing rod, the bayonet of the second section of the testing rod is matched with the self-locking spring pin of the third section of the testing rod, and the bayonet of the third section of the testing rod is matched with the self-locking spring pin of the fourth section of the testing rod; the self-locking spring pin is extended out of the bayonet, so that the corresponding test rod can be extended, and the test rod body can be extended; and pressing the self-locking spring pin back to the bayonet, so that the corresponding test rod can be shortened, and the test rod body is shortened.
In a preferable mode, the metal working head is of a right-angle structure, one side of the right-angle structure is fixed on the metal embedded structure, the other side of the right-angle structure is a working part, and one part of the working part is in a sawtooth shape; the metal working head except the working part is wrapped by the natural rubber insulating shell.
Preferably, the leakage current down lead adopts a copper telescopic antenna structure and extends or shortens along with the four sections of test rods.
The invention has the beneficial effects that: the structure is simple, the application range is wide, and the device can be applied to various structures of metal oxide arresters to receive leakage current of the arresters; the safety and reliability are realized, the ascending operation is avoided, and the occurrence of the falling accident at the high position is cut off from the source; the electric shock accident is avoided when the leakage current is accessed; firm, convenient to use can conveniently connect and get the high-altitude arrester leakage current, can accomplish the short circuit operation on ground, simplifies experimental wiring, shortens and shifts operation position time.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a diagram of the telescoping mode of the present invention;
fig. 4 is a schematic diagram of the operation of the present invention.
Detailed Description
As shown in fig. 1, the resistive current testing rod of a telescopic arrester of the present invention comprises: a test bar body 1 and a leakage current lead portion 19; the testing rod body 1 is composed of a natural rubber handle 4, a first section of testing rod 8, a second section of testing rod 9, a third section of testing rod 10 and a fourth section of testing rod 11, each section of testing rod is 1.5m long, the four sections of testing rods are connected in sequence from bottom to top and can be extended or shortened according to needs, and the natural rubber handle 4 is wrapped at the bottom of the first section of testing rod 8; the leakage current lead-out part 19 consists of a metal working head 2, a natural rubber insulating shell 3, a metal embedded structure 5, a leakage current lead-out wire 6 and a leakage current lead-out interface 7; the metal embedded structure 5 is embedded into the top end of the fourth section of the testing rod 11, the metal working head 2 is fixed on the metal embedded structure 5, the leakage current leading-out interface 7 is fixed at the bottom end of the first section of the testing rod 8, the testing rod body 1 is of a hollow structure and is composed of epoxy resin, the leakage current leading-out wire 6 is placed in the hollow testing rod body 1, one end of the leakage current leading-out wire 6 is connected with the metal embedded structure 5, and the other end of the leakage current leading-out wire 6 is connected with the leakage current leading-out interface 7.
As shown in fig. 2, a bayonet 13 is arranged at a position 10cm away from the top of each of the first section of testing rod 8, the second section of testing rod 9 and the third section of testing rod 10, a self-locking spring pin 12 is arranged at a position 9cm away from the bottom of each of the second section of testing rod 9, the third section of testing rod 10 and the fourth section of testing rod 11, the bayonet 13 of the first section of testing rod 8 is matched with the self-locking spring pin 12 of the second section of testing rod 9, the bayonet 13 of the second section of testing rod 9 is matched with the self-locking spring pin 12 of the third section of testing rod 10, and the bayonet 13 of the third section of testing rod 10 is matched with the self-locking spring pin 12 of the fourth section of testing rod 11; as shown in fig. 3, the self-locking spring pin 12 protrudes from the bayonet 13, so that the corresponding test rod can be extended, and the test rod body 1 can be extended; the self-locking spring pin 12 is pressed back to the bayonet 13, so that the corresponding test rod can be shortened, and the test rod body 1 can be shortened.
The metal working head 2 is of a right-angle structure, one side of the right-angle structure is fixed on the metal embedded structure 5 and is 20cm long, the other side of the right-angle structure is a working part which is 15cm long, and the front 10cm of the working part is of a sawtooth shape; the metal working head 2 except the working part is wrapped by a natural rubber insulating shell 3.
The leakage current down lead 6 adopts a copper telescopic antenna structure and extends or shortens along with the four sections of test rods, and can be stretched from 1.5m to 6.2 m.
Fig. 4 shows an application of the present invention in practical work, including: the lightning arrester testing device comprises a bus 14, a lightning arrester 15, a counter 16, a resistive current testing rod 17 and a testing host 18, wherein the length of the resistive current testing rod is adjusted according to different structures of the lightning arrester 15. The front end sawtooth structure of the metal working head 2 is used for removing an oxide layer of a leading-out line part of a lightning arrester counter 16, the metal working head 2 is connected with the metal embedded type 5 structure, and the metal working head 2 is in short circuit with the discharge counter 16 and leads out leakage current; the natural rubber insulating shell 3 prevents the metal working head 2 from contacting the lightning arrester 15 and the metal shell of the counter to cause shunt. The length of the leakage current down lead 6 can be changed along with the extension and the shortening of the rod body, and the use is convenient. The leakage current down lead 6 is arranged in the rod body, so that personal injury accidents caused by leakage current are avoided. The bottom of the leakage current down lead 6 is connected with the leakage current leading-out interface 7, so that the leakage current can be conveniently led to the test host 18.
The test rod body 1 is made of epoxy resin, and the epoxy resin has high elasticity and very good mechanical strength at normal temperature, good physical and chemical properties, high hardness, good flexibility and difficult corrosion; the insulating property is good, and the purposes of insulating and avoiding induced electricity from hurting people are achieved. The rod body is designed to be telescopic so as to adapt to different field requirements.
The natural rubber insulating housing 3 of the leakage current lead part 19 is made of natural rubber, has high elasticity and excellent mechanical strength, is non-polar rubber, and has good insulating property.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. The utility model provides a telescopic arrester resistive current test pole which characterized in that includes: a test bar body (1) and a leakage current lead-in portion (19); the testing rod body (1) is composed of a natural rubber handle (4), a first section of testing rod (8), a second section of testing rod (9), a third section of testing rod (10) and a fourth section of testing rod (11), the four sections of testing rods are connected in sequence from bottom to top, the four sections of testing rods can be extended or shortened according to needs, and the natural rubber handle (4) is wrapped at the bottom of the first section of testing rod (8); the leakage current lead part (19) consists of a metal working head (2), a natural rubber insulating shell (3), a metal embedded structure (5), a leakage current down lead (6) and a leakage current lead interface (7); the metal embedded structure (5) is embedded into the top end of the fourth section of the testing rod (11), the metal working head (2) is fixed on the metal embedded structure (5), the leakage current leading-out interface (7) is fixed at the bottom end of the first section of the testing rod (8), the testing rod body (1) is of a hollow structure and is made of epoxy resin, the leakage current leading-out wire (6) is placed in the hollow testing rod body (1), one end of the leakage current leading-out wire (6) is connected with the metal embedded structure (5), and the other end of the leakage current leading-out wire (6) is connected with the leakage current leading-out interface (7).
2. The resistance current testing rod of the telescopic arrester according to claim 1, characterized in that a bayonet (13) is arranged at a certain distance from the top of each testing rod of the first section of testing rod (8), the second section of testing rod (9) and the third section of testing rod (10), a self-locking spring pin (12) is arranged at a certain distance from the bottom of each testing rod of the second section of testing rod (9), the third section of testing rod (10) and the fourth section of testing rod (11), the bayonet (13) of the first section of the testing rod (8) is matched with the self-locking spring pin (12) of the second section of the testing rod (9), the bayonet (13) of the second section testing rod (9) is matched with the self-locking spring pin (12) of the third section testing rod (10), the bayonet (13) of the third section of testing rod (10) is matched with the self-locking spring pin (12) of the fourth section of testing rod (11); the self-locking spring pin (12) is extended out of the bayonet (13), so that the corresponding test rod can be extended, and the test rod body (1) can be extended; and the self-locking spring pin (12) is pressed back to the bayonet (13), so that the corresponding test rod can be shortened, and the test rod body (1) can be shortened.
3. The telescopic arrester resistive current test rod according to claim 1, characterized in that the metal working head (2) is in a right-angle structure, one side of the right-angle structure is fixed on the metal embedded structure (5), the other side of the right-angle structure is a working part, and a part of the working part is in a sawtooth shape; the metal working head (2) except the working part is wrapped by the natural rubber insulating shell (3).
4. The telescopic arrester resistive current test rod of claim 1, characterized in that the leakage current down lead (6) adopts a copper telescopic antenna structure and extends or shortens following the four sections of test rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292083.7U CN212483807U (en) | 2020-03-11 | 2020-03-11 | Telescopic arrester resistive current test rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292083.7U CN212483807U (en) | 2020-03-11 | 2020-03-11 | Telescopic arrester resistive current test rod |
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| Publication Number | Publication Date |
|---|---|
| CN212483807U true CN212483807U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020292083.7U Active CN212483807U (en) | 2020-03-11 | 2020-03-11 | Telescopic arrester resistive current test rod |
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| CN (1) | CN212483807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116735917A (en) * | 2023-05-24 | 2023-09-12 | 国网四川省电力公司攀枝花供电公司 | Live detection drainage device for lightning arrester |
-
2020
- 2020-03-11 CN CN202020292083.7U patent/CN212483807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116735917A (en) * | 2023-05-24 | 2023-09-12 | 国网四川省电力公司攀枝花供电公司 | Live detection drainage device for lightning arrester |
| CN116735917B (en) * | 2023-05-24 | 2024-04-02 | 国网四川省电力公司攀枝花供电公司 | Live detection drainage device for lightning arrester |
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