CN114137312A - Loop resistance test assembly - Google Patents
Loop resistance test assembly Download PDFInfo
- Publication number
- CN114137312A CN114137312A CN202011204615.8A CN202011204615A CN114137312A CN 114137312 A CN114137312 A CN 114137312A CN 202011204615 A CN202011204615 A CN 202011204615A CN 114137312 A CN114137312 A CN 114137312A
- Authority
- CN
- China
- Prior art keywords
- sheet
- loop resistance
- voltage
- cushion block
- copper bar
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052802 copper Inorganic materials 0.000 claims abstract description 37
- 239000010949 copper Substances 0.000 claims abstract description 37
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 12
- 238000003825 pressing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 241000270728 Alligator Species 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
-
- 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
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Abstract
The invention discloses a loop resistance testing assembly, which comprises an insulating cushion block and a testing head, wherein the testing head comprises a voltage sheet and a current sheet which are parallel to each other and are arranged in an aligned and attached manner, the testing head is also provided with a positioning hole for a fastening bolt of a grounding copper bar to penetrate through, and the positioning hole penetrates through the voltage sheet and the current sheet in sequence along a direction vertical to an attachment surface between the voltage sheet and the current sheet; the insulating cushion block is provided with a bottom wall and an embedded wall which are in point contact fit with the grounding copper bar and the measuring point respectively, and the distance between the embedded wall and the bottom wall increases progressively from one end to the other end of the insulating cushion block. The loop resistance testing assembly can quickly and stably implement the measurement of the loop resistance, and is low in operation difficulty, high in operation efficiency and high in measurement precision.
Description
Technical Field
The invention relates to the technical field of GIS equipment detection matching assemblies, in particular to a loop resistance testing assembly.
Background
In a general power transmission and transformation system, a good contact condition of a conductive loop is an important condition for ensuring the safe operation of GIS (gas insulated switchgear), and the loop resistance can effectively reflect the abnormity of the conductive loop.
In actual conditions, a traditional alligator clamp type test joint is generally adopted for loop resistance measurement means of GIS equipment and an open circuit breaker, and in actual application, due to the special structure of the GIS equipment, the alligator clamp type joint cannot be reliably fixed at a measurement point, so that the initial value difference of the loop resistance of the GIS equipment circuit breaker is generally higher than that of the open circuit breaker, the fluctuation of a measurement result is large, and the condition of a conductive loop of the equipment cannot be truly reflected. In addition, the whole grounding copper bar needs to be assembled and disassembled for loop resistance measurement of the GIS equipment, and the safety and the efficiency of operation are also influenced.
Therefore, how to quickly and accurately measure the loop resistance, and reduce the operation difficulty and improve the operation efficiency thereof is an important technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a loop resistance testing assembly which can quickly and stably measure loop resistance, and has low operation difficulty, high operation efficiency and high measurement precision.
In order to solve the technical problem, the invention provides a loop resistance testing assembly, which comprises an insulating cushion block and a testing head, wherein the testing head comprises an electric pressing sheet and an electric current sheet which are parallel to each other and are arranged in an aligned and attached manner, a positioning hole for a fastening bolt of a grounding copper bar to penetrate through is also arranged on the testing head, and the positioning hole penetrates through the electric pressing sheet and the electric current sheet in sequence along a direction perpendicular to an attaching surface between the electric pressing sheet and the electric current sheet;
the insulating cushion block is provided with a bottom wall and an embedded wall which are in point contact fit with the grounding copper bar and the measuring point respectively, and the distance between the embedded wall and the bottom wall increases progressively from one end to the other end of the insulating cushion block.
Preferably, the outer wall of the voltage sheet is provided with a plurality of pointed bosses, and the outer diameters of the pointed bosses are gradually decreased from one end close to the voltage sheet to one end far away from the voltage sheet.
Preferably, each of the tip bosses is uniformly arranged along an outer edge portion of the positioning hole.
Preferably, the positioning hole is a long hole.
Preferably, the electric voltage sheet and the electric current sheet are both made of red copper.
Preferably, the test head further comprises an insulating handle, and the assembling end of the electric pressing sheet and the assembling end of the electric current sheet are embedded and fixed in the insulating handle in an aligned mode.
Compared with the prior art, the loop resistance testing assembly provided by the invention is operated and used, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then the end with smaller distance between the embedded wall and the bottom wall of the insulating cushion block is inserted into the gap between the grounding copper bar and the measuring point, the insulating cushion block is kept continuously inserted until the gap between the grounding copper bar and the measuring point is propped open by the insulating cushion block to be enough for the testing head to carry out the measuring operation, then the measuring head is inserted into the gap between the grounding copper bar and the measuring point, as the electric pressing sheet and the electric current sheet are both of sheet structures with smaller thickness, the whole thickness dimension of the testing head is smaller, the testing head can be fully attached to the outer wall of the measuring point, after the head to be tested is attached to the measuring point in place, the embedded state of the insulating cushion block in the gap is kept, so as to avoid the grounding copper bar being in short circuit with the measuring point, and the fastening bolt penetrates through the positioning hole and is reconnected, so can be fixed in between ground copper bar and the measuring point with the reliable laminating of test head to effectively avoid in the follow-up measurement process test head to take place not hard up or dislocation, guarantee that the measurement process is stable coherent, the measuring result is accurate reliable, after the measurement finishes, lift fastening bolt off again so that with the test head by the ground copper bar with the measuring point in extract can, later accessible fastening bolt with ground copper bar and measuring point reliable connection again. The whole loop resistance testing process is simple and easy to implement, and the operation efficiency is high.
In another preferred scheme of this application, be provided with a plurality of cusp bosss on the outer wall of electric pressure piece, the external diameter of cusp boss is from being close to electric pressure piece one end to keeping away from electric pressure piece one end and is diminishing gradually. Before the measurement, the oxide film on the surface of the measuring point can be broken by utilizing the pointed boss, so that the voltage sheet can be directly contacted with the body of the measuring point, the contact resistance is effectively reduced, and the measurement precision is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a test head of a loop resistance test assembly according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic structural diagram of an insulating pad of a loop resistance testing assembly according to an embodiment of the present invention.
Wherein the content of the first and second substances,
11-insulating spacer blocks;
111-a bottom wall;
112-a panel wall;
12-a test head;
121-voltage slice;
122-current sheet;
123-positioning holes;
124-pointed boss;
125-insulating handle.
Detailed Description
The core of the invention is to provide a loop resistance testing component which can quickly and stably implement the measurement of loop resistance and has lower operation difficulty, higher operation efficiency and measurement precision.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a test head of a loop resistance test assembly according to an embodiment of the present invention; FIG. 2 is a side view of FIG. 1; fig. 3 is a schematic structural diagram of an insulating pad of a loop resistance testing assembly according to an embodiment of the present invention.
In a specific embodiment, the loop resistance testing assembly provided by the invention comprises an insulating cushion block 11 and a testing head 12, wherein the testing head 12 comprises a voltage sheet 121 and a current sheet 122 which are parallel to each other and are arranged in an aligned and attached manner, a positioning hole 123 for penetrating a fastening bolt of a grounding copper bar is further arranged on the testing head 12, and the positioning hole 123 penetrates the voltage sheet 121 and the current sheet 122 in sequence along a direction perpendicular to an attachment surface between the voltage sheet 121 and the current sheet 122; the insulating pad 11 has a bottom wall 111 and an embedded wall 112, which are respectively in contact fit with the ground copper bar and the measuring point, and the distance between the embedded wall 112 and the bottom wall 111 increases from one end to the other end of the insulating pad 11.
When in operation and use, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then the end with smaller distance between the embedded wall 112 and the bottom wall 111 of the insulating cushion block 11 is inserted into the gap between the grounding copper bar and the measuring point, the insulating cushion block 11 is kept to be continuously inserted until the gap between the grounding copper bar and the measuring point is expanded by the insulating cushion block 11 to be enough for the measuring head 12 to carry out the measuring operation, then the measuring head is inserted into the gap between the grounding copper bar and the measuring point, because the voltage sheet 121 and the current sheet 122 are both of sheet structures with smaller thickness, the whole thickness of the measuring head 12 is smaller, the testing head can be fully attached to the outer wall of the measuring point, the embedded state of the insulating cushion block 11 in the gap is kept to avoid the grounding copper bar from being short-circuited with the measuring point, and simultaneously the fastening bolt penetrates through the positioning hole 123 and is reconnected, thereby effectively avoiding the looseness or dislocation of the measuring head 12 in the subsequent measuring process, the measuring process is guaranteed to be stable and consistent, the measuring result is accurate and reliable, after the measurement is finished, the fastening bolt is dismounted again, so that the test head 12 can be pulled out from a gap between the grounding copper bar and the measuring point, and then the grounding copper bar and the measuring point can be reliably connected again through the fastening bolt. The whole loop resistance testing process is simple and easy to implement, and the operation efficiency is high.
It should be noted that the shape of the insulating pad 11 shown in fig. 3 is only for illustration and understanding, and the shape of the insulating pad 11 in practical application is not limited thereto, as long as it is necessary to ensure reliable fitting of the insulating pad 11 with the ground copper bar and the measuring point and ensure practical use of the loop resistance testing assembly.
Furthermore, a plurality of pointed bosses 124 are arranged on the outer wall of the voltage sheet 121, and the outer diameters of the pointed bosses 124 decrease from the end close to the voltage sheet 121 to the end far from the voltage sheet 121. Before measurement, the oxide film on the surface of the measurement point can be broken by using the pointed boss 124, so that the voltage sheet 121 can be directly contacted with the body of the measurement point, thereby effectively reducing the contact resistance and improving the measurement precision.
Specifically, the tip bosses 124 are uniformly arranged along the outer edge portion of the positioning hole 123. The uniform arrangement helps to optimize the stress distribution of the foundation surface between the pointed boss 124 and the measuring point, and avoids the structural damage to the equipment body at the measuring point due to the over-concentrated stress.
More specifically, the pointed boss 124 and the voltage piece 121 may be an integral structure, and may also be reliably fixed to the voltage piece 121 by bonding or welding, and in practical application, a worker may flexibly select a connection arrangement form between the pointed boss 124 and the voltage piece 121 according to actual working conditions, and in principle, any one of the pointed boss 124 and the voltage piece may be used as long as the actual application requirements of the circuit resistance testing assembly can be met.
Further, the positioning hole 123 is an elongated hole. The long hole structure can be adapted to the space between the fastening bolts at the loop resistance measuring points of various different types, so that the working condition adaptability of the loop resistance testing assembly is obviously improved.
On the other hand, the voltage plate 121 and the current plate 122 are made of red copper. The red copper material manufactured part has good conductivity and corrosion resistance, can fully meet the long-term frequent use requirements under various working conditions, and effectively ensures the reliability and accuracy of detection data of loop resistance test, thereby further improving the overall performance of the loop resistance test component.
In addition, the test head 12 further includes an insulating handle 125, and the mounting end of the voltage sheet 121 and the mounting end of the current sheet 122 are embedded and fixed in the insulating handle 125 in a position-to-position manner. In the operation process, the worker can hold or hold the insulating handle 125 to control the test head 12 to implement insertion, extraction or other related operation procedures, so that the personal safety of the worker is effectively ensured on the basis of ensuring the related operation efficiency of the test head 12, and the dangerous situations such as electric shock or electric leakage are avoided.
In summary, when the loop resistance testing assembly provided by the invention is operated and used, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then the end with smaller distance between the embedded wall and the bottom wall of the insulating cushion block is inserted into the gap between the grounding copper bar and the measuring point, the insulating cushion block is kept continuously inserted until the gap between the grounding copper bar and the measuring point is propped open by the insulating cushion block to be enough for the testing head to carry out the measuring operation, then the measuring head is inserted into the gap between the grounding copper bar and the measuring point, as the electric pressing sheet and the electric current sheet are both of a sheet structure with smaller thickness, the whole thickness dimension of the testing head is smaller, the testing head can be fully attached to the outer wall of the measuring point, after the head to be tested is attached to the measuring point in place, the embedded state of the insulating cushion block in the gap is kept, so that the grounding copper bar is not in short circuit with the measuring point, and the fastening bolt penetrates through the positioning hole and is reconnected, so can be fixed in between ground copper bar and the measuring point with the reliable laminating of test head to effectively avoid in the follow-up measurement process test head to take place not hard up or dislocation, guarantee that the measurement process is stable coherent, the measuring result is accurate reliable, after the measurement finishes, lift fastening bolt off again so that with the test head by the ground copper bar with the measuring point in extract can, later accessible fastening bolt with ground copper bar and measuring point reliable connection again. The whole loop resistance testing process is simple and easy to implement, and the operation efficiency is high.
The loop resistance test assembly provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A loop resistance testing assembly is characterized by comprising an insulating cushion block and a testing head, wherein the testing head comprises a voltage sheet and a current sheet which are parallel to each other and are arranged in an aligned and attached mode, a positioning hole for a fastening bolt of a grounding copper bar to penetrate through is further formed in the testing head, and the positioning hole penetrates through the voltage sheet and the current sheet in sequence along a direction perpendicular to an attaching surface between the voltage sheet and the current sheet;
the insulating cushion block is provided with a bottom wall and an embedded wall which are in point contact fit with the grounding copper bar and the measuring point respectively, and the distance between the embedded wall and the bottom wall increases progressively from one end to the other end of the insulating cushion block.
2. The loop resistance test assembly of claim 1, wherein the outer wall of the voltage wafer has a plurality of pointed bosses, and the outer diameter of the pointed bosses decreases from the end near the voltage wafer to the end far from the voltage wafer.
3. The loop resistance testing assembly of claim 2, wherein each of the prong bosses is uniformly disposed along an outer edge portion of the locating hole.
4. The loop resistance testing assembly of claim 1, wherein the positioning holes are elongated holes.
5. The loop resistance testing assembly of claim 1, wherein the voltage and current pads are each a red copper piece.
6. The loop resistance test assembly of claim 1, wherein the test head further comprises an insulating handle, and the mounting end of the voltage sheet and the mounting end of the current sheet are embedded and fixed in the insulating handle in an aligned manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011204615.8A CN114137312B (en) | 2020-11-02 | 2020-11-02 | Loop resistance test assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011204615.8A CN114137312B (en) | 2020-11-02 | 2020-11-02 | Loop resistance test assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114137312A true CN114137312A (en) | 2022-03-04 |
| CN114137312B CN114137312B (en) | 2023-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011204615.8A Active CN114137312B (en) | 2020-11-02 | 2020-11-02 | Loop resistance test assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114137312B (en) |
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| CN208780736U (en) * | 2018-09-14 | 2019-04-23 | 国网江苏省电力有限公司南通供电分公司 | The U-shaped test clip of switchgear loop resistance |
| CN109116120A (en) * | 2018-10-10 | 2019-01-01 | 国网河南省电力公司济源供电公司 | A kind of GIS loop resistance test device |
| CN109444486A (en) * | 2019-01-08 | 2019-03-08 | 国网山东省电力公司泰安供电公司 | Testing clamp and central cabinet circuit breaker loop resistance test device |
| CN209927931U (en) * | 2019-02-02 | 2020-01-10 | 国网浙江省电力有限公司湖州供电公司 | Loop resistance test wire clamp suitable for high-voltage switch |
| CN210051823U (en) * | 2019-05-16 | 2020-02-11 | 上海臻友设备工程技术有限公司 | Insulation resistance tester |
| CN210775583U (en) * | 2019-08-05 | 2020-06-16 | 天津视哲金属结构有限公司 | Conductive module used on mobile phone detection jig |
| CN210838243U (en) * | 2019-08-09 | 2020-06-23 | 顺科新能源技术股份有限公司 | Four-spring busbar connector |
| CN211602258U (en) * | 2020-01-17 | 2020-09-29 | 成都太微电子科技有限公司 | Clamping force testing device |
| CN111257603A (en) * | 2020-03-26 | 2020-06-09 | 广东电网有限责任公司 | Kelong module port test head |
| CN111413525A (en) * | 2020-04-07 | 2020-07-14 | 广东电网有限责任公司 | Auxiliary device for testing loop resistance of vacuum circuit breaker |
| CN111351987A (en) * | 2020-04-22 | 2020-06-30 | 国家电网有限公司 | Handcart switch loop resistance test wiring device |
| CN111830323A (en) * | 2020-07-01 | 2020-10-27 | 国网江苏省电力有限公司淮安供电分公司 | Handcart switch loop resistance test self-operated clamp |
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