CN202453374U - Wiring bolt facilitating secondary test of mutual inductor - Google Patents
Wiring bolt facilitating secondary test of mutual inductor Download PDFInfo
- Publication number
- CN202453374U CN202453374U CN2012200783027U CN201220078302U CN202453374U CN 202453374 U CN202453374 U CN 202453374U CN 2012200783027 U CN2012200783027 U CN 2012200783027U CN 201220078302 U CN201220078302 U CN 201220078302U CN 202453374 U CN202453374 U CN 202453374U
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- China
- Prior art keywords
- test
- nut
- mutual inductor
- wiring bolt
- bolt
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- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 87
- 238000009413 insulation Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 3
- 230000037431 insertion Effects 0.000 abstract 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a wiring bolt which is easy to operate, convenient to use, safe, reliable and good in measuring effect, and facilitates a secondary test of a mutual inductor. The wiring bolt comprises a nut, wherein a stud is connected below the nut; the nut and the stud have an integrated structure; an insertion groove is formed on the nut; an insulating sleeve is sleeved outside the nut; and an opening of the insertion groove is upwards. After a secondary line of the mutual inductor is fixed by the wiring bolt, and when the secondary test of the mutual inductor is performed, an internal-expanding test plug of a measuring tool can be inserted into the insertion groove of the wiring bolt directly; and the wiring bolt forms a good electric access with the internal-expanding test plug of the measuring tool and the secondary line of the mutual inductor, so that a reliable test loop is formed. A test clamp is eliminated in an integral test link, so that the problems caused by the test clamp are solved fundamentally. Therefore, the wiring bolt has the advantages of simplicity in operation, convenience for use, safety, reliability and good measuring effect.
Description
Technical field
The utility model relates to a kind of power equipment element, relates in particular to a kind of connection bolt of being convenient to the mutual inductor second test.
Background technology
At present, the fixing bolt that generally adopts common model of mutual inductor secondary line, the bolt that uses in it and our daily life does not structurally have basic difference, and this bolt can satisfy the fixedly requirement of mutual inductor secondary line.Because mutual inductor is the critical elements between contact primary system and the electrical secondary system, according to national standard and testing regulations requirement, power department will carry out some attribute testings to guarantee that equipment operation is good to mutual inductor every year.When the mutual inductor second test, testing tool inserts in the terminal hole slot of test folder through the internal expanding type test plug, will test being clipped on the bolt again, forms power circuit with testing element; That is to say that bolt is not only wanted permanent haulage line, also will participate in test.Because the mutual inductor major part is installed in the enclosed switchgear, installing space is compact, adds that the test folder takes up room again very much, makes normally wiring in narrow space.In the process of service test folder test, except strengthening operating personnel's work difficulty, also cause loose contact easily, bring measuring error thus, even also test failure can occur.In this external narrow space, because the exposed conduction of test folder, thereby this part is in contact with one another easily and causes the test short circuit, and these all will cause the test result mistake, cause test crash.
Summary of the invention
The purpose of the utility model provides a kind of connection bolt of being convenient to the mutual inductor second test of simple to operate, esy to use, safe and reliable, good test effect.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of connection bolt of being convenient to the mutual inductor second test comprises nut, is connected with double-screw bolt below the nut, and nut and double-screw bolt are structure as a whole, and it is characterized in that: have inserting groove on the nut.
According to described a kind of connection bolt of being convenient to the mutual inductor second test, it is characterized in that: said nut is set with insulation sleeve outward.
According to described a kind of connection bolt of being convenient to the mutual inductor second test, it is characterized in that: said inserting groove opening up.
Adopt the utility model fixedly behind the mutual inductor secondary line; When carrying out the mutual inductor second test; The internal expanding type test plug of testing tool can directly be inserted in the inserting groove of the said connection bolt of the utility model; The utility model just forms good electric path with the internal expanding type test plug line and the mutual inductor secondary line of testing tool, thereby forms reliable test loop.The whole measuring test ring has been saved the use of test folder, carries next problems secretly thereby fundamentally solved by test.Therefore, the utlity model has beneficial effect simple to operate, esy to use, safe and reliable, good test effect.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of double-screw bolt and nut among Fig. 1;
Fig. 4 is the user mode reference diagram that the utility model does not connect internal expanding type test plug line;
Fig. 5 is the user mode reference diagram after the utility model connects internal expanding type test plug line.
In the accompanying drawing:
1, nut; 2, inserting groove; 3, insulation sleeve; 4, double-screw bolt; 5, internal expanding type test plug line.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:
A kind of connection bolt of being convenient to the mutual inductor second test to shown in Figure 5, comprises nut 1 like Fig. 1, is connected with double-screw bolt 4 below the nut 1, and nut 1 is structure as a whole with double-screw bolt 4, has inserting groove 2 on the nut 1.In the present embodiment, be set with insulation sleeve 3 outside the nut 1, inserting groove 2 openings up.
Embodiment recited above describes the preferred implementation of the utility model; Be not that design and scope to the utility model limits; Under the prerequisite that does not break away from the utility model design concept, common engineering technical personnel make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model; The technology contents that the utility model is asked for protection all is documented in claims.
The mutual inductor secondary connection adopts the said bolt of the utility model; Not only can satisfy the reliable physical property of wiring needs; And because nut partly has the inserting groove that the internal expanding type test plug line with testing tool is complementary; Thereby remove that service test carries that the wiring that comes is complicated, the test folder is prone to come off secretly from, loose contact and the exposed current-carrying part of test folder be in contact with one another easily and cause the test problem of short-circuit; Feasible test can be accomplished in narrow space, has saved test period in addition, has improved the success of the test rate.
The utility model is formed " ten " word formula copper bolt by double-screw bolt, nut and insulation sleeve three parts; The double-screw bolt part is identical with the double-screw bolt part of normal bolt; But nut thickness is different from plain nut, and the Thickness Design of this nut is 15mm, and to open a diameter in the nut central vertical be 4 millimeters inserting groove; Groove depth is 10mm, and insulation sleeve is placed on the nut.The complete structure of Here it is the utility model.
With nut thickening is in order to satisfy the needs of inserting groove hole depth, and the nut of thickening and the inserting groove on the nut are the major parts that is used for testing.The size of inserting groove is measure-alike with the terminal hole slot of test folder; The internal expanding type test plug of testing tool can directly be inserted in the inserting groove of the said connection bolt of the utility model; Because double-screw bolt and nut are made by copper product; And copper have conduct electricity very well, heat conductivility is strong, current-carrying capacity is big characteristics, so the utility model can form good electric path with the internal expanding type test plug line and the mutual inductor secondary line of testing tool, thereby forms reliable test loop.
The insulation sleeve that the utility model installs additional on nut is in order to make the bolt exposed part reach the insulating requirements of electrical equipment.
This shows that the utility model is actually the use of having saved the test folder at test wrapper, carry the above-mentioned measuring error of coming secretly and test short circuit problem thereby fundamentally solved by test.In addition,, directly internal expanding type test plug line is inserted this connection bolt, saved the setting up time of test folder, improved test efficiency and success ratio to a great extent owing to need not to be hinged with again the test folder.
The utility model is a kind of power equipment element, the work efficiency that is mainly used in the fixing of mutual inductor secondary line and improves the voltage transformer secondary line test.
During concrete the making; The hole that vertically to open a diameter at the nut top be 4 mm is as inserting groove, and test wire is inserted in the inserting groove from the top, and test wire adopts the internal expanding type test plug; Thereby change the mode of connection of test wire, made things convenient for and tested and practiced thrift the time.Fastening bolt leaves a firm groove of " ten " font at the nut top for ease, has added insulation sleeve in the nut elongated portion, contacts with lead with the nut part of avoiding extending to be short-circuited.Because the inserting groove that nut partly has the internal expanding type test plug with testing tool to be complementary; Thereby can remove from service test carry secretly the wiring that comes complicated, come off easily, loose contact and the exposed current-carrying part of test folder be in contact with one another easily and cause the test problem of short-circuit; Feasible test can be accomplished in narrow space; Save test period, improve the success of the test rate, fundamentally solved mutual inductor second trial wiring problem.
Claims (3)
1. a connection bolt of being convenient to the mutual inductor second test comprises nut (1), is connected with double-screw bolt (4) below the nut (1), and nut (1) is structure as a whole with double-screw bolt (4), it is characterized in that: have inserting groove (2) on the nut (1).
2. a kind of connection bolt of being convenient to the mutual inductor second test according to claim 1 is characterized in that: the outer insulation sleeve (3) that is set with of said nut (1).
3. a kind of connection bolt of being convenient to the mutual inductor second test according to claim 1 and 2 is characterized in that: said inserting groove (2) opening up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200783027U CN202453374U (en) | 2012-03-05 | 2012-03-05 | Wiring bolt facilitating secondary test of mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200783027U CN202453374U (en) | 2012-03-05 | 2012-03-05 | Wiring bolt facilitating secondary test of mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453374U true CN202453374U (en) | 2012-09-26 |
Family
ID=46869229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200783027U Expired - Fee Related CN202453374U (en) | 2012-03-05 | 2012-03-05 | Wiring bolt facilitating secondary test of mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977437A (en) * | 2015-07-17 | 2015-10-14 | 国家电网公司 | 10kV cable branch box loop resistance testing tool |
| CN107656100A (en) * | 2017-09-21 | 2018-02-02 | 天津市百利电气有限公司 | The anti-heating fixture of relay characteristic testing stand |
-
2012
- 2012-03-05 CN CN2012200783027U patent/CN202453374U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977437A (en) * | 2015-07-17 | 2015-10-14 | 国家电网公司 | 10kV cable branch box loop resistance testing tool |
| CN104977437B (en) * | 2015-07-17 | 2017-11-28 | 国家电网公司 | 10kV cable branch box loop resistance test instruments |
| CN107656100A (en) * | 2017-09-21 | 2018-02-02 | 天津市百利电气有限公司 | The anti-heating fixture of relay characteristic testing stand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 277100 ZAOZHUANG, SHANDONG PROVINCE TO: 277000 ZAOZHUANG, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130801 Address after: 277000 the Yellow River Road, Xuecheng District, Shandong, No. 999, No. Patentee after: Tai'an Power Supply Co., Ltd. of Shandong Electric Power Corporation Patentee after: State Grid Corporation of China Address before: 277100 No. 60 Guangming Middle Road, Shizhong District, Shandong, Zaozhuang Patentee before: Tai'an Power Supply Co., Ltd. of Shandong Electric Power Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140305 |