CN105551883A - Bidirectional air-blowing arc extinguishing method and arc extinguishing chamber - Google Patents
Bidirectional air-blowing arc extinguishing method and arc extinguishing chamber Download PDFInfo
- Publication number
- CN105551883A CN105551883A CN201610092123.1A CN201610092123A CN105551883A CN 105551883 A CN105551883 A CN 105551883A CN 201610092123 A CN201610092123 A CN 201610092123A CN 105551883 A CN105551883 A CN 105551883A
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- Prior art keywords
- arc
- contact
- arc contact
- air
- static
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Abstract
The invention discloses a bidirectional air-blowing arc extinguishing method and an arc extinguishing chamber. The arc extinguishing chamber comprises a stationery arc contact and a movable arc contact, wherein the movable arc contact blows air to an electric arc from the external of the electric arc in a traditional way; the stationary arc contact is hollow, and provided with a nozzle on the top and a third air chamber at the bottom; when a brake is separated, air in the third air chamber is ejected out from the nozzle on the top of the stationary arc contact; and the electric arc is subjected to the air blowing from the external and internal directions. According to the arc extinguishing chamber, the nozzle of the stationary arc contact is an airflow outlet for reverse air blowing, and positioned in the geometrical center point of the electric arc, thus the arc extinguishing effect is better; airflow in the reverse air blowing is from the third air chamber at the bottom of the stationary arc contact, only piston motion occurs during an airflow generation process, and thereby the air here is relatively low in temperature, the temperature of the electric arc can be reduced, the arc extinguishing effect is enhanced, and the burning loss of the stationary arc contact is reduced.
Description
Technical field
The invention belongs to high-voltage switch gear technical field, particularly, relate to a kind of two-way air blowing arc-suppressing method and arc control device.
Background technology
The circuit breaker of current gas insulation metal closed switch (being called for short GIS), generally adopt two unidirectional air blowing self-energy extinguishing chamber of air chamber, its arc-suppressing method is: when cut-offfing big current, arc heating expanding chamber, utilize Arc choke effect, make expanding chamber produce high pressure (high pressure makes the valve closing between expanding chamber and plenum chamber, and the Compressed Gas of plenum chamber is discharged by pressure limiting valve in moving arcing contact motion process), produce air-blowing, before and after current over-zero, blow out electric arc; When cut-offfing small area analysis, arc energy is little, and the air pressure of expanding chamber is not enough, and the plenum chamber after expanding chamber is Compressed Gas under the motion of moving arcing contact, makes the valve open between expanding chamber and plenum chamber, produces air-blowing by expanding chamber, thus blows out electric arc.This arc control device are stable when cut-offfing big current, but blow-out unstable properties when cut-offfing the inductive small area analysis of some, main cause is that blast pressure is not enough.The thermal expansion room of self-energy extinguishing chamber utilizes arc energy pressure build up, opening velocity can not be too high, be obtain enough fractures to open distance to bear recovery voltage during short circuit interruption, opening velocity again can not be too low, for solving this contradiction, designer adopts and allows traditional " static arc contact " counter motion, and such opening velocity just improves, Here it is two dynamic two unidirectional air blowing self-energy extinguishing chamber of air chamber.But with regard to complexity how arc quenching chamber structure like this, nozzle (nonmetal parts) bears larger mechanical force, the probability broken down substantially increases, reduce the reliability of product, and existing arc control device air-blowing is all a direction, namely electric arc is blown from electric arc outside, poor to the cooling efficiency of electric arc, need gas flow many.
Chinese patent application 201510053888 discloses a kind of circuit breaker air blowing arc control device, it make use of the confined space formed between dynamic assembly, slide assemblies, insulation inner core, utilize the air-flow that the change in volume of this confined space produces, by static arc contact and the both direction air blowing up and down of dynamic main contact hollow parts, thus reach the effect of arc extinguishing.This scheme relative to unidirectional air blowing technical scheme be advantageous, but still have a lot of weak point, one is that it only relies on change in volume in this single air chamber to produce air-flow, and air pressure is more weak; One is that its two-way air blowing is actually relative to air stream outlet, blows to both direction, but for the object of blowing, i.e. electric arc, directly be not subject to the air blowing of both direction, its airflow direction is more disorderly on the contrary, thus have impact on arc quenching effect.
Summary of the invention
The object of the invention is the defect overcoming aforementioned prior art, provide a kind of increases the two-way air blowing arc-suppressing method of oppositely blowing from internal arctube at traditional double air chamber again from the basis of the outside air-blowing of electric arc, and corresponding arc control device.
For this reason, the technical solution used in the present invention is such: two-way air blowing arc-suppressing method, and comprise static arc contact and moving arcing contact, moving arcing contact is blown from electric arc externally to electric arc in a traditional way; It is characterized in that static arc contact hollow and nozzle is arranged at top sprays air-flow when separating brake from the nozzle of static arc contact; Electric arc is subject to the air blowing of outside, inner both direction simultaneously.
Two-way air blowing arc control device, comprise static arc contact and moving arcing contact, have the first air chamber and the second air chamber in moving arcing contact side, blow from electric arc externally to electric arc in a traditional way, it is characterized in that: static arc contact hollow, nozzle is arranged at top, and bottom has one the 3rd air chamber; When separating brake, the gas in the 3rd air chamber is sprayed by static arc contact top jet nozzle.
Further, have piston and spring in the 3rd described air chamber, piston is connected with static arc contact, and spring provides and moving arcing contact direction of motion opposite effect power.
Further, described 3rd air chamber also comprises cylinder and valve seat, and cylinder is hollow cavity structure, described piston, spring and static arc contact are placed in cylinder, be threaded connection bottom piston and static arc contact, spring housing is outside static arc contact, and both ends of the spring is against on piston and cylinder end face respectively; The cavity inner wall of described cylinder has a ring shape step surface; Described valve seat is placed in cylinder rear end, and opening and the piston of valve seat touch.
Further, described static arc contact is a cylinder stock, and the hollow diameters at static arc contact top is less than the diameter of all the other position hollows of static arc contact, forms nozzle; Static arc contact top external circumference place has a circle groove.
Further, the present invention also can be used for improving traditional two dynamic two unidirectional air blowing self-energy extinguishing chamber of air chamber, namely after static arc contact, increases the 3rd air chamber, utilizes the motion of static arc contact, the gas in the 3rd air chamber is sprayed by static arc contact top jet nozzle.
In the present invention, the direction that static arc contact contacts with moving arcing contact is defined as top, rightabout is defined as bottom; When electric arc results from switch separating brake, static arc contact and moving arcing contact contact position (also can cry disengaging place), the side towards moving arcing contact is defined as the outside of electric arc by the present invention, and the side towards static arc contact is defined as the inside of electric arc.
In separating brake process, moving arcing contact drives static arc contact motion, and static arc contact drives piston movement, and the 3rd chamber volume increases, and air pressure declines, and gas enters the 3rd air chamber by valve, simultaneously Compress Spring; When moving arcing contact continues motion and static arc contact departs from, produce electric arc, now spring promotes piston and drives static arc contact counter motion, and compression the 3rd gas indoor gas, makes gas spray from the nozzle of static arc contact, namely blow from internal arctube.Meanwhile, also have first, second air chamber (i.e. expanding chamber and plenum chamber) in moving arcing contact side, still blow from electric arc outside in a traditional way, thus make electric arc be subject to two-way air blowing.
Can find out from the foregoing description, the present invention has the advantage of following several respects, and one be the air stream outlet of reverse air blowing is the nozzle of static arc contact, and be positioned at the geometric center point of electric arc, arc quenching effect can be better; One is the 3rd air chamber that its air-flow derives from bottom static arc contact, in the process producing air-flow, only have piston movement, and therefore temperature is lower comparatively speaking for gas herein, can reduce arc temperature, promotes arc quenching effect, also makes the scaling loss of static arc contact reduce.
Accompanying drawing explanation
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of static arc contact of the present invention;
Fig. 3 is the partial enlarged drawing on static arc contact top of the present invention;
Fig. 4 is the state diagram of the present invention when closing position;
Fig. 5 is the state diagram of inventive piston when limit on the left position;
The state diagram that Fig. 6 is the present invention when just open position;
Fig. 7 is the state diagram of the present invention when open position.
Be labeled as in figure: static arc contact 1, nozzle 11, groove 12, moving arcing contact 2, fingertip 21, first air chamber 3, second air chamber 4, the 3rd air chamber 5, cylinder 6, annular table terrace 61, piston 7, valve seat 8, valve block 81, valve spring 82, spring 9, buffering conical blocks 10, banded fingertip 13, guide ring 14.
Embodiment
See accompanying drawing.Two-way air blowing arc control device described in the present embodiment, comprise static arc contact 1 and moving arcing contact 2, and described moving arcing contact 2 top is provided with the fingertip 21 of hollow, and end has the first air chamber 3 and the second air chamber 4, corresponds respectively to expanding chamber of the prior art and plenum chamber; Described static arc contact 1 is a cylinder stock, static arc contact integral hollow, and the Circularhole diameter at top is less than the diameter of all the other position hollows of static arc contact, forms nozzle 11; Static arc contact top external circumference place has a circle groove 12, and static arc contact top is given prominence to, and during combined floodgate, the fingertip 21 on moving arcing contact 2 top is enclosed within groove 12 place at static arc contact 1 top, and in separating brake process, drive static arc contact 1 to move.
There is bottom static arc contact 1 described in the present embodiment one the 3rd air chamber 5, comprise cylinder 6, piston 7 and valve seat 8, described cylinder 6 is hollow cavity structure, and cylinder is built-in with piston 7, spring 9 and static arc contact 1, be threaded connection bottom piston 7 and static arc contact 1, slide in cylinder 6; It is peripheral that spring 7 is enclosed within static arc contact 1, and spring 9 two ends are against on piston 7 and cylinder 6 end face respectively; The cavity inner wall of described cylinder 6 has a ring shape step surface 61, for the scope of activities of limited piston; Described valve seat 8 is placed in cylinder 6 rear end, is provided with valve block 81 in valve seat 8, and valve block 81 is controlled by valve spring 82; Form the 3rd air chamber 5 between valve seat 8 and piston 7, namely provide air blowing to static arc contact 1.Valve seat 8 is provided with a buffering conical blocks 10, and buffering conical blocks 10, just to vacancy in static arc contact 1, for the centre bore of closed static arc contact 1, makes the 3rd air chamber 5 internal pressure raise, thus the speed of static arc contact 1 is reduced to zero reposefully.Be arranged with banded fingertip 13 and guide ring 14 outside described static arc contact 1, banded fingertip 13 plays electrical connection effect, and guide ring 14 plays a part the static arc contact that leads.
The present embodiment in separating brake process, in moving arcing contact 2 motion process, the first air chamber 3(expanding chamber) or the second air chamber 4(plenum chamber) blow from electric arc outside in a traditional way, moving arcing contact 2 is while motion, static arc contact 1 is driven to move by fingertip 21, static arc contact 1 drives piston 7 to move, the 3rd air chamber 5 volume between valve seat and piston is increased, air pressure declines, thus valve block 81 is opened, and simultaneously Compress Spring 9, encounter the annular table terrace 61 in cylinder 6 when piston 7 after, piston 7 stop motion, valve block 81 is closed under the effect of valve spring 82 simultaneously, and moving arcing contact 2 continues motion under the drive of mechanism, so the fingertip 21 of moving arcing contact 2 front end swells, depart from the groove 12 of static arc contact 1, rebounded by the spring 9 compressed, promote piston 7 and drive static arc contact 1 counter motion, compress gas in the 3rd air chamber 5, gas is sprayed from the nozzle 11 of static arc contact 1, namely blow from internal arctube, thus make electric arc be subject to two-way air blowing, more effectively reduce arc temperature, improve the arc extinction performance of arc control device.
Claims (6)
1. two-way air blowing arc-suppressing method, comprise static arc contact and moving arcing contact, moving arcing contact is blown from electric arc externally to electric arc in a traditional way; It is characterized in that static arc contact hollow and nozzle is arranged at top sprays air-flow when separating brake from the nozzle of static arc contact; Electric arc is subject to the air blowing of outside, inner both direction simultaneously.
2. utilize the two-way air blowing arc control device of method described in claim 1, comprise static arc contact and moving arcing contact, there is in moving arcing contact side the first air chamber and the second air chamber, blow from electric arc externally to electric arc in a traditional way, it is characterized in that: static arc contact hollow, nozzle is arranged at top, and bottom has one the 3rd air chamber; When separating brake, the gas in the 3rd air chamber is sprayed by static arc contact top jet nozzle.
3. two-way air blowing arc control device as claimed in claim 2, is characterized in that: have piston and spring in the 3rd described air chamber, piston is connected with static arc contact, and spring provides and moving arcing contact direction of motion opposite effect power.
4. two-way air blowing arc control device as claimed in claim 3, it is characterized in that: described 3rd air chamber also comprises cylinder and valve seat, cylinder is hollow cavity structure, described piston, spring and static arc contact are placed in cylinder, be threaded connection bottom piston and static arc contact, spring housing is outside static arc contact, and both ends of the spring is against on piston and cylinder end face respectively; The cavity inner wall of described cylinder has a ring shape step surface; Described valve seat is placed in cylinder rear end, and opening and the piston of valve seat touch.
5. two-way air blowing arc control device as claimed in claim 2, is characterized in that: described static arc contact is a cylinder stock, and the hollow diameters at static arc contact top is less than the diameter of all the other position hollows of static arc contact, form nozzle; Static arc contact top external circumference place has a circle groove.
6. two-way air blowing arc control device as claimed in claim 2, it is characterized in that: for improvement of traditional two dynamic two unidirectional air blowing self-energy extinguishing chamber of air chamber, namely after static arc contact, the 3rd air chamber is increased, utilize the motion of static arc contact, the gas in the 3rd air chamber is sprayed by static arc contact top jet nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092123.1A CN105551883B (en) | 2016-02-19 | 2016-02-19 | Two-way air blowing arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092123.1A CN105551883B (en) | 2016-02-19 | 2016-02-19 | Two-way air blowing arc-chutes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105551883A true CN105551883A (en) | 2016-05-04 |
| CN105551883B CN105551883B (en) | 2018-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610092123.1A Active CN105551883B (en) | 2016-02-19 | 2016-02-19 | Two-way air blowing arc-chutes |
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| Country | Link |
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| CN (1) | CN105551883B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451182A (en) * | 2016-11-04 | 2017-02-22 | 西安固之电气科技有限公司 | Handcart type switch cabinet |
| CN109425825A (en) * | 2017-08-16 | 2019-03-05 | 平高集团有限公司 | Double gas chamber double movement high voltages switch break performance simulation test device |
| CN110112033A (en) * | 2019-05-08 | 2019-08-09 | 沈阳工业大学 | A kind of arcing contact and application method with auxiliary piston |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08339745A (en) * | 1995-06-08 | 1996-12-24 | Nissin Electric Co Ltd | Gas circuit breaker |
| EP0785562A1 (en) * | 1996-01-22 | 1997-07-23 | Gec Alsthom T & D Sa | Circuit breaker having contacts with double movement |
| CN101136290A (en) * | 2007-09-24 | 2008-03-05 | 平高集团有限公司 | Arc-chute of 40.5kV hexafluoride sulphur circuit breaker |
| CN205376393U (en) * | 2016-02-19 | 2016-07-06 | 浙江开关厂有限公司 | Two -way explosion chamber of blowing |
-
2016
- 2016-02-19 CN CN201610092123.1A patent/CN105551883B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08339745A (en) * | 1995-06-08 | 1996-12-24 | Nissin Electric Co Ltd | Gas circuit breaker |
| EP0785562A1 (en) * | 1996-01-22 | 1997-07-23 | Gec Alsthom T & D Sa | Circuit breaker having contacts with double movement |
| CN101136290A (en) * | 2007-09-24 | 2008-03-05 | 平高集团有限公司 | Arc-chute of 40.5kV hexafluoride sulphur circuit breaker |
| CN205376393U (en) * | 2016-02-19 | 2016-07-06 | 浙江开关厂有限公司 | Two -way explosion chamber of blowing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451182A (en) * | 2016-11-04 | 2017-02-22 | 西安固之电气科技有限公司 | Handcart type switch cabinet |
| CN106451182B (en) * | 2016-11-04 | 2018-04-06 | 西安固之电气科技有限公司 | Handcart switch cabinet |
| CN109425825A (en) * | 2017-08-16 | 2019-03-05 | 平高集团有限公司 | Double gas chamber double movement high voltages switch break performance simulation test device |
| CN110112033A (en) * | 2019-05-08 | 2019-08-09 | 沈阳工业大学 | A kind of arcing contact and application method with auxiliary piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105551883B (en) | 2018-06-12 |
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