CN101887820A - Method for improving closing rebound processing efficiency - Google Patents
Method for improving closing rebound processing efficiency Download PDFInfo
- Publication number
- CN101887820A CN101887820A CN2009100509580A CN200910050958A CN101887820A CN 101887820 A CN101887820 A CN 101887820A CN 2009100509580 A CN2009100509580 A CN 2009100509580A CN 200910050958 A CN200910050958 A CN 200910050958A CN 101887820 A CN101887820 A CN 101887820A
- Authority
- CN
- China
- Prior art keywords
- bolt
- closing rebound
- processing efficiency
- contact
- pressure
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a method for closing rebound processing efficiency. In the method, a vacuum breaker with a bolt is used, the pressure on a contact face is regulated by regulating the fastening moment of the bolt, and the regulation range of the fastening moment of the bolt ranges from 8.8 to 10.8N.m or from 17.7 to 22.6N.m or from 31.49 to 39.2N.m or from 51.0 to 60.8N.m or from 78.5 to 127.4N.m. The method for closing rebound processing efficiency can improve closing rebound processing efficiency by regulating contact pressure.
Description
Technical field
The present invention relates to circuit breaker, relate in particular to a kind of method of handling closing rebound efficient that improves.
Technical background
Vacuum circuit-breaker because of its arc-extinguishing medium and arc extinguishing after the dielectric in contact gap all be that high vacuum is gained the name; It has volume little, in light weight, be applicable to the advantage that frequent operation, arc extinguishing need not overhaul, in power distribution network, use comparatively universal.
When the characteristic of vacuum circuit-breaker is tested, the phenomenon that discovery has some test datas to exceed standard, wherein, the closing rebound data account for the first place of the quantity that exceeds standard, and how improving processing closing rebound efficient is the problem that the present inventor is devoted to study.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of method of handling closing rebound efficient that improves is provided, it reaches by the pressure of adjusting contact improves the purpose of handling closing rebound efficient.
The technical scheme that realizes above-mentioned purpose is: a kind of method of handling closing rebound efficient that improves, comprise vacuum circuit-breaker, contain bolt on the vacuum circuit-breaker, wherein, the Tightening moment of regulating bolt is to regulate the pressure of contact-making surface, and the adjustable range of the Tightening moment of bolt is 8.8～10.8N.m or 17.7～22.6N.m or 31.49～39.2N.m or 51.0～60.8N.m or 78.5～127.4N.m.
The invention has the beneficial effects as follows: a kind of method of handling closing rebound efficient that improves of the present invention improves the purpose of handling closing rebound efficient by adjusting fastening torque of bolt to reach, and the low bolt of temperature should be tightened a bit, and the temperature height should be unscrewed a bit.
Embodiment
Below with the invention will be further described.
A kind of method of handling closing rebound efficient that improves of the present invention, comprise vacuum circuit-breaker, contain bolt on the vacuum circuit-breaker, the Tightening moment of regulating bolt is to regulate the pressure of contact-making surface, and the adjustable range of the Tightening moment of bolt is 8.8～10.8N.m or 17.7～22.6N.m or 31.49～39.2N.m or 51.0～60.8N.m or 78.5～127.4N.m.
Under actual conditions, fastening each contact-making surface can be adjusted the pressure of contact, but also wants particular problem concrete analysis, the especially fastening bolt and the securing member coefficient of expansion not simultaneously, and undue fastening increase contact pressure also can play reaction.For example: the bolt overtorquing, contact pressure is excessive, and then the packing ring Down Highway partly is compressed, and the cross section of bus reduces, and is in operation, and bus generates heat by electric current.Because the coefficient of expansion of aluminium and copper than bolt greatly, the packing ring Down Highway is compressed, and bus can not free wxpansion, if this moment, bus current reduced, temperature reduces, because of the shrinkage ratio bolt of bus is big, so form a gap.Contact resistance strengthens like this, and temperature raises, and contact-making surface makes contact resistance bigger with regard to easy oxidation, makes the bolt coupling part that superheating phenomenon takes place at last.The low bolt of temperature should be tightened a bit generally speaking, and the temperature height should be unscrewed a bit.So contact pressure has scope.
Scope is as follows: (bolt of different specifications, the pressure of contact are also different)
| Bolt specification (mm) | Fastening torque of bolt N.m | Bolt specification (mm) | Fastening torque of bolt N.m |
| ??M8 | ??8.8～10.8 | ??M14 | ??51.0～60.8 |
| ??M10 | ??17.7～22.6 | ??M16 | ??78.5～98.1 |
| ??M12 | ??31.49～39.2 | ??M18 | ??98.0～127.4 |
Below in conjunction with the embodiments the present invention is had been described in detail, those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (1)
1. one kind is improved the method for handling closing rebound efficient, comprise vacuum circuit-breaker, contain bolt on the vacuum circuit-breaker, it is characterized in that, the Tightening moment of regulating bolt is to regulate the pressure of contact-making surface, and the adjustable range of the Tightening moment of bolt is 8.8～10.8N.m or 17.7～22.6N.m or 31.49～39.2N.m or 51.0～60.8N.m or 78.5～127.4N.m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100509580A CN101887820A (en) | 2009-05-11 | 2009-05-11 | Method for improving closing rebound processing efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100509580A CN101887820A (en) | 2009-05-11 | 2009-05-11 | Method for improving closing rebound processing efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101887820A true CN101887820A (en) | 2010-11-17 |
Family
ID=43073678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100509580A Pending CN101887820A (en) | 2009-05-11 | 2009-05-11 | Method for improving closing rebound processing efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101887820A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100722479B1 (en) * | 2005-12-30 | 2007-05-28 | 엘에스산전 주식회사 | A vacuum circuit breaker |
| CN201156495Y (en) * | 2008-01-28 | 2008-11-26 | 中国电力科学研究院 | Operation mechanism in circuit cutter |
| CN201185152Y (en) * | 2008-03-24 | 2009-01-21 | 陈成明 | Vacuum circuit-breaker |
-
2009
- 2009-05-11 CN CN2009100509580A patent/CN101887820A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100722479B1 (en) * | 2005-12-30 | 2007-05-28 | 엘에스산전 주식회사 | A vacuum circuit breaker |
| CN201156495Y (en) * | 2008-01-28 | 2008-11-26 | 中国电力科学研究院 | Operation mechanism in circuit cutter |
| CN201185152Y (en) * | 2008-03-24 | 2009-01-21 | 陈成明 | Vacuum circuit-breaker |
Non-Patent Citations (1)
| Title |
|---|
| 刘峰涛: "接触网系统中螺栓紧固力矩的设计", 《中国电气化铁路两万公里学术会议论文集》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121025 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121025 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant before: Shanghai Electric Power Corporation |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101117 |