CN114137312B - Loop resistance test assembly - Google Patents
Loop resistance test assembly Download PDFInfo
- Publication number
- CN114137312B CN114137312B CN202011204615.8A CN202011204615A CN114137312B CN 114137312 B CN114137312 B CN 114137312B CN 202011204615 A CN202011204615 A CN 202011204615A CN 114137312 B CN114137312 B CN 114137312B
- Authority
- CN
- China
- Prior art keywords
- sheet
- cushion block
- loop resistance
- copper bar
- grounding copper
- 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
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 36
- 229910052802 copper Inorganic materials 0.000 claims abstract description 36
- 239000010949 copper Substances 0.000 claims abstract description 36
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims 4
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 241000270728 Alligator Species 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000005856 abnormality Effects 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
- 238000000605 extraction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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 an electric pressing sheet and a current sheet which are parallel to each other and are aligned and attached to each other, a positioning hole for a fastening bolt of a grounding copper bar to penetrate through is also formed in the testing head, and the positioning hole penetrates through the electric pressing sheet and the current sheet in sequence along the direction perpendicular to the attaching surface between the electric pressing sheet and the current sheet; the insulating cushion block is provided with a bottom wall and an embedded wall which are respectively in contact fit with the grounding copper bar and the measuring point, and the distance between the embedded wall and the bottom wall is gradually increased from one end of the insulating cushion block to the other end of the insulating cushion block. The loop resistance testing component can rapidly and stably measure the loop resistance, and has lower operation difficulty and higher operation efficiency and measurement accuracy.
Description
Technical Field
The invention relates to the technical field of GIS equipment detection matching components, in particular to a loop resistance testing component.
Background
In a general power transmission and transformation system, a good conductive loop contact condition is an important condition for ensuring the safe operation of GIS (gas insulated closed switch) equipment, and the loop resistance can effectively reflect the abnormality of a conductive loop.
In the current practical working condition, aiming at the loop resistance measuring means of GIS equipment and an open circuit breaker, a traditional alligator clamp type test joint is generally adopted, in practical application, because the special structure of the GIS equipment, the alligator clamp type test joint cannot be reliably fixed at a measuring point, the loop resistance initial value difference of the GIS equipment circuit breaker is generally higher than that of the open circuit breaker, the fluctuation of a measuring result is large, and the condition of a conductive loop of the equipment cannot be truly reflected. In addition, the loop resistance measurement of GIS equipment needs to be assembled and disassembled with the whole grounding copper bar, and the safety and the efficiency of operation are also affected.
Therefore, how to quickly and accurately measure the loop resistance, reduce the operation difficulty and improve the operation efficiency is an important technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a loop resistance testing component which can rapidly and stably measure loop resistance, and has lower operation difficulty and higher operation efficiency and measurement accuracy.
In order to solve the technical problems, 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 a current sheet which are mutually parallel and are aligned and attached, a positioning hole for a fastening bolt of a grounding copper bar to penetrate through is also formed in the testing head, and the positioning hole penetrates through the electric pressing sheet and the current sheet in sequence along a direction perpendicular to an attaching surface between the electric pressing sheet and the current sheet;
the insulating cushion block is provided with a bottom wall and an embedded wall which are respectively in contact fit with the grounding copper bar and the measuring point, and the distance between the embedded wall and the bottom wall is gradually increased from one end of the insulating cushion block to the other end of the insulating cushion block.
Preferably, a plurality of pointed bosses are arranged on the outer wall of the voltage sheet, and the outer diameters of the pointed bosses decrease 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 voltage piece and the current piece are red copper pieces.
Preferably, the test head further comprises an insulating handle, and the assembly end of the electric pressing sheet and the assembly end of the current sheet are embedded and fixed in the insulating handle in a aligned mode.
Compared with the background art, the loop resistance test assembly provided by the invention has the advantages that when the loop resistance test assembly is in operation and use, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then one end of the insulating cushion block, which is smaller in space between the embedded wall and the bottom wall, is inserted into the gap between the grounding copper bar and the measuring point, the continuous insertion of the insulating cushion block is kept until the gap between the grounding copper bar and the measuring point is spread by the insulating cushion block to be enough for the measuring operation of the test head, then the measuring head is inserted into the gap between the grounding copper bar and the measuring point, and because the electric pressing piece and the electric current piece are of sheet-shaped structures with smaller thickness, the whole thickness dimension of the test head is smaller and can be fully attached to the outer wall of the measuring point, the embedded state of the insulating cushion block in the gap is kept after the test head is attached to the measuring point in place, so as to avoid the short circuit between the grounding copper bar and the measuring point, and meanwhile, the fastening bolt penetrates through the positioning hole and is reconnected, so that the test head can be reliably attached and fixed between the grounding copper bar and the measuring point, the test head is effectively prevented from loosening or misplacement in the subsequent measuring process, the test head is ensured, the whole thickness is ensured, and the copper bar can be reliably pulled out from the gap after the measuring bolt is reliably and firmly connected with the measuring bolt through the measuring bolt. The whole loop resistance test process is simple, convenient and feasible, and the operation efficiency is higher.
In another preferred scheme of the application, a plurality of pointed bosses are arranged on the outer wall of the voltage piece, and the outer diameters of the pointed bosses decrease from one end close to the voltage piece to one end far away from the voltage piece. Before measurement, the oxide film on the surface of the measurement point can be broken by utilizing the pointed boss, so that the voltage sheet can be directly contacted with the body of the measurement point, thereby effectively reducing the contact resistance and improving the measurement accuracy.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic 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,
11-insulating cushion blocks;
111-a bottom wall;
112-embedding walls;
12-a test head;
121-electric pressing sheet;
122-current plate;
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 rapidly and stably measure loop resistance, and has lower operation difficulty and higher operation efficiency and measurement accuracy.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a test head of a loop resistance testing assembly according to an embodiment of the 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 mutually parallel and are aligned and attached, a positioning hole 123 for a fastening bolt of a grounding copper bar to penetrate through is also formed in the testing head 12, and the positioning hole 123 penetrates through the voltage sheet 121 and the current sheet 122 in sequence along a direction perpendicular to an attaching surface between the voltage sheet 121 and the current sheet 122; the insulating spacer 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 spacer 11.
During operation, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then one end with smaller spacing between the embedded wall 112 and the bottom wall 111 of the insulating cushion block 11 is inserted into a gap between the grounding copper bar and the measuring point, continuous insertion of the insulating cushion block 11 is kept until the gap between the grounding copper bar and the measuring point is spread by the insulating cushion block 11 until enough measuring heads 12 are used for measuring, then the measuring heads are inserted into the gap between the grounding copper bar and the measuring point, and as the electric pressing piece 121 and the current piece 122 are of sheet-shaped structures with smaller thickness, the whole thickness dimension of the measuring heads 12 is smaller, the embedded state of the insulating cushion block 11 in the gap can be kept, so that the grounding copper bar and the measuring point are prevented from being shorted, meanwhile, the fastening bolt penetrates through the positioning hole 123 and is reconnected, accordingly loosening or dislocation of the measuring heads 12 in the subsequent measuring process is effectively avoided, the measuring process is ensured to be accurate and reliable, after the measuring result is finished, the fastening bolt is detached again, the measuring heads 12 are conveniently pulled out of the gap between the grounding copper bar and the measuring points, and the measuring points can be connected with the measuring points by fastening bolts. The whole loop resistance test process is simple, convenient and feasible, and the operation efficiency is higher.
It should be noted that, the shape of the insulating pad 11 shown in fig. 3 is only for illustrating and facilitating understanding of the scheme, and the shape of the insulating pad 11 in practical application is not limited thereto, as long as the reliable adaptation of the insulating pad 11 to the grounding copper bar and the measuring point can be ensured and the practical use of the loop resistance testing assembly is ensured.
Further, a plurality of tip bosses 124 are arranged on the outer wall of the voltage sheet 121, and the outer diameters of the tip bosses 124 decrease from one end close to the voltage sheet 121 to one end far from the voltage sheet 121. Before measurement, the oxide film on the surface of the measurement point can be broken by utilizing the tip 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 accuracy.
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 basal plane between the tip boss 124 and the measurement point, and avoids structural damage to the device body at the measurement point due to excessive stress concentration.
More specifically, the tip boss 124 and the voltage plate 121 may be integrally formed, and may be reliably fixed on the voltage plate 121 by bonding or welding, etc., in practical application, a worker may flexibly select a connection arrangement form between the tip boss 124 and the voltage plate 121 according to an actual working condition requirement, and in principle, any connection arrangement form may be used as long as the connection arrangement form can meet an actual application requirement of the loop resistance testing assembly.
Further, the positioning hole 123 is a long hole. The long hole structure can be adapted to the intervals of fastening bolts at loop resistance measuring points of various different types, so that the working condition adaptability of the loop resistance testing assembly is remarkably improved.
On the other hand, the voltage plate 121 and the current plate 122 are both made of red copper. The red copper material manufactured part is good in conductivity and corrosion resistance, long-term frequent use requirements under various working conditions can be fully met, reliability and accuracy of detection data of loop resistance testing are effectively guaranteed, and therefore overall performance of the loop resistance testing assembly is further improved.
In addition, the test head 12 further comprises an insulating handle 125, and the assembly end of the electric voltage sheet 121 and the assembly end of the current sheet 122 are embedded and fixed in the insulating handle 125 in an aligned manner. In the operation process, the operator can hold or hold the insulating handle 125, so as to control the test head 12 to implement insertion, extraction or other related operation procedures, thereby effectively ensuring the personal safety of the operator and avoiding dangerous situations such as electric shock or electric leakage on the basis of ensuring the related operation efficiency of the test head 12.
In summary, it can be seen that, when the loop resistance testing assembly provided by the invention is used in operation, the fastening bolt at one end of the grounding copper bar at the measuring point is removed, then one end of the insulating cushion block, which has smaller spacing between the embedded wall and the bottom wall, is inserted into the gap between the grounding copper bar and the measuring point, the continuous insertion of the insulating cushion block is kept until the gap between the grounding copper bar and the measuring point is spread by the insulating cushion block to be enough for the measuring operation of the testing head, then the testing head is inserted into the gap between the grounding copper bar and the measuring point, and the electric pressing piece and the current piece are of sheet-shaped structures with smaller thickness, so that the whole thickness dimension of the testing head is smaller and can be fully attached to the outer wall of the measuring point, after the testing head and the measuring point are attached in place, the embedded state of the insulating cushion block in the gap is kept, so as to avoid the short circuit between the grounding copper bar and the measuring point, and meanwhile, the fastening bolt penetrates through the positioning hole and is reconnected, so that the testing head can be reliably attached and fixed between the grounding copper bar and the measuring point, and the testing head is effectively prevented from loosening or misplacement in the subsequent measuring process, the testing head is ensured, and the whole thickness is stable, and the copper bar can be removed from the gap between the measuring bolt and the measuring bolt after the measuring bolt is reliably pulled out by the fastening bolt. The whole loop resistance test process is simple, convenient and feasible, and the operation efficiency is higher.
The loop resistance test assembly provided by the invention is described above in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (4)
1. The loop resistance testing assembly is characterized by comprising an insulating cushion block and a testing head, wherein the testing head comprises an electric pressing sheet and a current sheet which are parallel to each other and are aligned and attached to each other, a positioning hole for a fastening bolt of a grounding copper bar to penetrate through is also formed in the testing head, and the positioning hole penetrates through the electric pressing sheet and the current sheet in sequence along a direction perpendicular to an attaching surface between the electric pressing sheet and the current sheet;
a plurality of pointed bosses are arranged on the outer wall of the voltage sheet, and the outer diameters of the pointed bosses decrease from one end close to the voltage sheet to one end far from the voltage sheet;
the insulation cushion block is provided with a bottom wall and an embedded wall which are respectively in contact fit with the grounding copper bar and the measuring point, the distance between the embedded wall and the bottom wall increases gradually from one end of the insulation cushion block to the other end, the end with smaller distance between the embedded wall and the bottom wall of the insulation cushion block is inserted into a gap between the grounding copper bar and the measuring point until the gap between the grounding copper bar and the measuring point is spread by the insulation cushion block to be enough for the insertion of a test head and the measurement;
the test head also comprises an insulating handle, and the assembly end of the electric voltage sheet and the assembly end of the current sheet are embedded and fixed in the insulating handle in a contraposition manner.
2. The loop resistance testing assembly of claim 1, wherein each of the tip bosses is uniformly disposed along an outer edge portion of the locating hole.
3. The circuit resistance testing assembly of claim 1, wherein the locating hole is an elongated hole.
4. The loop resistance testing assembly of claim 1, wherein the voltage pad and the current pad are each red copper pieces.
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 CN114137312A (en) | 2022-03-04 |
| CN114137312B true CN114137312B (en) | 2023-12-22 |
Family
ID=80438541
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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| 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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