CN85106131A - Gaseous cut-out - Google Patents
Gaseous cut-out Download PDFInfo
- Publication number
- CN85106131A CN85106131A CN85106131.1A CN85106131A CN85106131A CN 85106131 A CN85106131 A CN 85106131A CN 85106131 A CN85106131 A CN 85106131A CN 85106131 A CN85106131 A CN 85106131A
- Authority
- CN
- China
- Prior art keywords
- contact
- cylinder
- cabin
- piston
- suction cabin
- 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.)
- Withdrawn
Links
Images
Landscapes
- Circuit Breakers (AREA)
Abstract
A kind of gaseous cut-out has: one is full of the housing of insulating gas, and one first contact, a blind end are towards first contact and relatively-stationary with it hollow cylinder, and it is held in addition and is opening.The piston that slides in one cylinder constitutes the suction cabin with the cylinder blind end.One stretches tubulose second contact through cylinder blind end and suction cabin from piston, and it is outer and be communicated with the suction cabin that its end has a nozzle to extend cylinder.The one the second contacts are blocked by first contact through the gas of the second contact nozzle when detent position, but both electrically conductings.Between suction cabin and cylinder openend, current limiting measures are arranged this moment and produce excessive negative pressure in case aspirate the cabin here.
Description
The present invention relates to a kind of gaseous cut-out, this circuit breaker comes extinguish arcs by handling a piston generation insulation air-flow that connects with portable contact.
It is to form the insulation air-flow that is produced after the negative pressure when utilizing piston to move to come extinguish arcs that general air-flowing type opens circuit.Piston is movably and with the portable contact of a tubulose to link to each other in cylinder.Form an airtight suction cabin by cylinder, piston and portable contact, one side of piston at one end, through a clear opening that is installed in the portable contact, the suction cabin is that nozzle communicates with the opening portion of portable contact.Also have second air-tight cabin to separate in the cylinder with piston and suction cabin.
1 moves to when separating with fixed contact when portable contact in such gaseous cut-out, piston in the cylinder moves too, and cause aspirating generation negative pressure in the cabin, simultaneously by the clear opening on portable contact wall, the portable contact of tubulose has liquid to exchange with the suction cabin.This negative pressure raises rapidly along with moving moving of square contact, contact is closed because the nozzle of portable contact is fixed, so when portable contact when fixedly arc surface electric contact separates, produced electric arc between the two, the nozzle through portable contact has produced the air-flow that flows to the suction cabin simultaneously.Therefore, electric arc together is inhaled in the portable contact in company with the air-flow that enters opening portion, has extinguished electric arc thus and has made current interruptions.
But owing to the astern speed of portable contact is along with the increase of suction cabin negative pressure is slowed down, so when the suction cabin produces overweight negative pressure, the speed of opening of portable contact will slow down so far forth, descend easily with the cutout that causes circuit breaker.This shows that the shortcoming of general circuit breaker is exactly the strength that must increase application piston in order to make the unlikely decline of breaking capacity.
One object of the present invention is eliminated above-mentioned shortcoming exactly, and provide a gaseous cut-out, make the unlikely degree that is enough to hinder portable contact fast moving that is elevated to of negative pressure in the suction cabin, under the easy situation of the cutout that does not reduce electric current, be reduced to the power that overcomes negative pressure and piston is applied.
In view of above-mentioned purpose, gaseous cut-out of the present invention comprises, a housing that is full of electric insulation gas, and one first contact, its Closed End of hollow cylinder is to first contact, and the other end is an openend, and relative first contact of cylinder is fixed.One piston that slides is arranged in the cylinder, and with a suction of the blind end formation cabin of cylinder, tubulose second contact, the cylinder blind end that slides from piston extends to the suction cabin, and the end of second contact has a nozzle to lead to the cylinder outside and has liquid to exchange with the cabin of bleeding.When first and second contact during in off-position, in face of a burst of air-flow through nozzle, the nozzle of second contact combines and is lived by firm blockade with first contact electricity, and adopt have only when first and second contact could be during at detent position in the suction cabin and the cylinder opening end set up limited liquid and exchange measure, form the excess negative pressure to stop in the suction cabin.
The concrete material object of narrating the present invention in conjunction with the accompanying drawings now and being recommended, wherein:
The vertical section of Fig. 1 such as a kind of specific gaseous cut-out of the present invention is in the conversion operations off-state;
Fig. 2 is the part enlarged drawing of Fig. 1, is expressed as portable contact and is about to leave fixedly arc surface electric contact state before;
Fig. 3 is the cross section along Fig. 2 III-IV line;
Fig. 4 is moving and time chart of portable contact;
Fig. 4 B is the boot state and the time chart of the circuit breaker of Fig. 1;
Fig. 4 C is suction cabin negative pressure and time chart.
Figure 1 shows that gaseous cut-out of the present invention, comprising: the housing that is full of electric insulation gas as shown in the figure; Hollow piston cylinder 3 with blind end 3e and openend (not shown); The piston that can in cylinder, slide 2 with the connection of operating mechanism (not shown); The portable contact of the tubulose that connects with piston 2 (second contact) 1, piston 2 also has a fixed contact assembly (first contact) 10 with the end sealing of portable contact 1, and the fixed contact 7 that has that is installed in wherein reaches fixedly arc surface electric contact 8.By the circle wall of cylinder 3, piston 2 and portable contact 1 constitute suction cabin 3a, and with regard to piston 2, the airtight piston ring 4 on piston 2 excircles of suction 3a opposite, cabin separates with suction cabin 3a.There are two clear opening 1b can pass through insulating gas on the end of portable contact 1 at piston on one side.The opening portion of portable contact 1 other end is that nozzle communicates with suction cabin 3a through clear opening 1b.On the inner periphery of the opening portion 3C of cylinder 3 one ends, be provided with contact 5, with the outer circumference surface of portable contact 1 for electrically contacting, facing to contact 5 supporting member 6 of a portable contact 1 of supporting is arranged, make portable contact 1 moving linearly, and will aspirate cabin 3a and seal up.
Because moving of piston 2, fixed contact 7 can electrically contact with the external peripheral surface of the opening portion 1a of portable contact 1, and fixedly arc surface electric contact 8 can contact with the inner circumferential surface of the opening portion 1a of portable contact 1 simultaneously.In the contact off-position, fixedly arc surface electric contact 8 stretches into portable contact 1 and electrically contacts the circulation of having sealed air-flow that the nozzle 1a of portable contact 1 is firm with it.
As Fig. 1 and shown in Figure 3, circuit breaker of the present invention also comprises at least one groove, and for example the inner circumferential surface of cylinder 3 has four groove 3d.Its layout is can communicate in order to make between suction cabin 3a and the 2nd cabin 3b, promptly when portable contact 1 and fixing 8 contacted stages of arc surface electric contact, produces in aspirating the cabin for preventing the excess negative pressure.So axial groove 3d is when first and second contact during in off-position, in the suction cabin and the cylinder opening end set up the measure that liquid exchanges.
The operating process of above-mentioned circuit breaker is after portable contact is inserted into fixed contact 7, because the backward movement of piston 2, portable contact 1 moves to contact 7 opposite directions with regard to beginning, at time t
1Fig. 4 A, 4B and 4C, T represent the whole stroke required time of portable contact 1.Because at this moment aspirating cabin 3a communicates with the second cabin 3b by groove 3d, so the insulating gas at the second cabin 3b is inhaled into suction cabin 3a, this makes negative pressure wherein remain on moving of institute's fixed limit of giving and unlikely prevention piston 2, and also enough extinguish arcs of negative pressure amount.This shows, piston 2 be with the even speed shown in Fig. 4 A curve in cylinder 3 to moving with fixed contact 7 rightabouts.Because moving of piston 2, the negative pressure in the suction cabin 3a increases gradually shown in curve (C) among Fig. 4 C.Insulating gas in the portable contact 1 of tubulose flows into through clear opening 1b and aspirates cabin 3a, and the insulating gas in the second cabin 3b flows into suction cabin 3a through groove 3d simultaneously, and its nozzle 1a is at time t when portable contact 1 continuation is mobile
2Break away from fixed contact 7, shown in curve b among Fig. 4 B.The nozzle 1a that Figure 2 shows that portable contact 1 state of arc surface electric contact 8 when sealing that be fixed.Before portable contact 1 was about to leave fixedly arc surface electric contact 8, the Negative Pressure Difference in the suction cabin 3a had seldom reached maximum.At time t
3Portable contact 1 has produced electric arc A, as shown in Figure 1 after leaving fixedly arc surface electric contact 8 between the two.Electric arc is in company with by among the opening portion 1a(figure shown in the arrow) insulating gas that flows into together is inhaled in the portable contact 1, thereby eliminated electric arc and cut off electric current.
From the curve C of Fig. 4 C as can be seen, because the effect of groove 3d, when portable contact 1 began to leave fixed contact X, the negative pressure in the suction cabin 3a increased gradually, left fully fixedly at portable contact 1 almost to reach maximum before the arc surface electric contact.Though piston 2 astern speeds reduce when negative pressure increases among the suction cabin 3a in general instrument, but in the present invention, negative pressure among the suction cabin 3a increases gradually, astern speed reduce also be gradually with a spot of, the negative pressure of therefore aspirating cabin 3a reduces less, the breaking capacity of electric current does not reduce, and does not need simultaneously for the negative pressure that overcomes suction cabin 3a increases piston 2 to be applied strength.
As mentioned above, according to the present invention, a groove to be arranged at least so that the suction cabin is communicated with second cabin at the cylinder inner circumferential surface.Second cabin and suction cabin are by piston separated when contact is in off-position, this shows, when the circuit breaker open operation, the rapid rising of suction cabin negative pressure has stoped the reduction of piston traveling speed, simultaneously for overcoming the breaking capacity that power that negative pressure puts on piston can reduce unlikely reduction electric current.
Revisal 85106131
After the preceding revisal of the capable revisal of file name page or leaf
Specification 19 ... in 1 work as ... in, when
1 11 ... liquid exchanges.Fluid communication.
1 12 ... move square contact ... portable contact
1 18 ... produce overweight negative pressure ... produce excessive negative pressure
25 liquid exchange.Fluid communication.
3 14 liquid exchange.Fluid communication.
17 ... liquid exchanges ... fluid communication,
1 10 ... liquid exchanges ... fluid communication,
1 12 ... liquid exchanges ... fluid communication,
Claims (2)
1, a gaseous cut-out comprises, a housing that is full of electric insulation gas,
One first contact;
A hollow cylinder has a blind end and an openend relative with it towards said first contact, and the relative first contact cylinder is fixed;
A piston that slides in cylinder constitutes the suction cabin with cylinder Feng Miduan;
Tubulose second contact, sliding from piston through cylinder blind end and suction cabin, second contact has one to stretch to the outer nozzle of cylinder and exchange with suction cabin liquid, when first and second contact during at detent position, in face of the gas from the nozzle process, the nozzle of second contact combines for electricity with first contact and is lived by the firm blockade of first contact;
Suction cabin and cylinder opening end set up measure that limited liquid exchanges only when first and second contact during in off-position in order to stop generation excess negative pressure in the suction cabin.
2, as the gaseous cut-out that claim 1 proposed, described to set up liquid interchange measure be the axial notch of cylinder surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85106131 CN1008414B (en) | 1985-08-14 | 1985-08-14 | Gaseous cut-out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85106131 CN1008414B (en) | 1985-08-14 | 1985-08-14 | Gaseous cut-out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85106131A true CN85106131A (en) | 1987-03-04 |
| CN1008414B CN1008414B (en) | 1990-06-13 |
Family
ID=4794902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85106131 Expired CN1008414B (en) | 1985-08-14 | 1985-08-14 | Gaseous cut-out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008414B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369498B (en) * | 2007-08-13 | 2012-03-07 | 三菱电机株式会社 | Grounding switch device |
| CN105448591A (en) * | 2015-11-27 | 2016-03-30 | 河南平芝高压开关有限公司 | Inhalation type arc extinguishing moving contact device and grounding switch using the same |
| CN111201581A (en) * | 2017-10-12 | 2020-05-26 | 株式会社日立制作所 | Gas cutter |
-
1985
- 1985-08-14 CN CN 85106131 patent/CN1008414B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369498B (en) * | 2007-08-13 | 2012-03-07 | 三菱电机株式会社 | Grounding switch device |
| CN105448591A (en) * | 2015-11-27 | 2016-03-30 | 河南平芝高压开关有限公司 | Inhalation type arc extinguishing moving contact device and grounding switch using the same |
| CN105448591B (en) * | 2015-11-27 | 2018-04-13 | 河南平芝高压开关有限公司 | The trigger device of air suction type arc extinguishing and the earthing switch using the device |
| CN111201581A (en) * | 2017-10-12 | 2020-05-26 | 株式会社日立制作所 | Gas cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008414B (en) | 1990-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100383906C (en) | Control device for the coordinated actuation of at least two switching devices, of which one is a vacuum switch | |
| CN87102963A (en) | Compressed dielectric gas circuit breaker | |
| CN1022594C (en) | Surge-limiting circuit breaker | |
| CN1074163C (en) | Disjoncteur a autocompression reduite | |
| CN85106131A (en) | Gaseous cut-out | |
| CN1042445A (en) | The primary cut-out of pressurising dielectric gas arc-extinguishing | |
| CN111816502B (en) | Operating mechanism of vacuum circuit breaker | |
| US4650942A (en) | Compressed gas high tension circuit breaker, requiring low operating energy | |
| CN1095520A (en) | Have the weak compression of gas cutout from the Puffer-type primary cut-out | |
| CN101675491A (en) | Switching device having a vacuum interrupter chamber | |
| GB858791A (en) | Improvements in or relating to gas blast electric circuit interrupters | |
| CN1044008A (en) | High pressure and medium pressure gas circuit breaker | |
| CN1041239A (en) | Primary cut-out with dielectric gas arc-extinguishing | |
| CN209487399U (en) | A kind of vacuum switch | |
| US4440997A (en) | Puffer interrupter with arc energy assist | |
| CN214378215U (en) | Double-acting arc extinguish chamber transmission structure | |
| CN210073731U (en) | Terminal structure of solenoid type contactor | |
| CN209658077U (en) | A kind of three station vacuum switches | |
| CN1023737C (en) | Medium tension circuit-breaker | |
| GB2607791A (en) | An electrical interrupter | |
| KR0157616B1 (en) | Gas blast load break switch | |
| CN1146058A (en) | Power switch | |
| CN1160754C (en) | Medium voltage knife type load switch with vacuum arc-suppression chamber | |
| CN209981099U (en) | Vacuum switch | |
| CN217306428U (en) | Keep off gas seal structure and circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |