CN104393523B - Gas-insulated switch cabinet fault electric arc limit device and trigger device thereof - Google Patents
Gas-insulated switch cabinet fault electric arc limit device and trigger device thereof Download PDFInfo
- Publication number
- CN104393523B CN104393523B CN201410666842.0A CN201410666842A CN104393523B CN 104393523 B CN104393523 B CN 104393523B CN 201410666842 A CN201410666842 A CN 201410666842A CN 104393523 B CN104393523 B CN 104393523B
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- China
- Prior art keywords
- push rod
- piston
- cylinder body
- electric arc
- gas
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- 238000010891 electric arc Methods 0.000 title claims abstract description 42
- 238000009413 insulation Methods 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 43
- 238000007789 sealing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to the high-pressure electrical field, in particular to a gas-insulated switch cabinet fault electric arc limit device and a trigger device thereof. The gas-insulated switch cabinet fault electric arc limit device comprises the trigger device; the trigger device comprises a cylinder and a piston which is assembled inside the cylinder; one end of the piston is provided with an ejection rod; a portion of an internal chamber of the cylinder, which is arranged on the piston side which is close to the ejection rod, forms into a rod chamber; a portion on the other side of the piston forms into a rod-free chamber; the rod-free chamber is connected with a gas connecting valve; the gas connecting valve and the cylinder are in seal fit; one end of the cylinder, which is close to the ejection rod, is provided with an anchoring force limit mechanism which is matched with the ejection rod in a limit mode to release limit of the ejection rod when the piston is under the preset sized pressure of the rod-free chamber. The gas-insulated switch cabinet fault electric arc limit device solves the problem that the existing fault electric arc limit device is high in cost and long in response time.
Description
Technical field
The present invention relates to field of high-voltage electrical equipment, especially related to a kind of gas insulation switch cabinet fault electric arc and limited device and trigger device.
Background technology
Gas insulation switch cabinet has obtained increasingly for being widely applied with advantages such as its small size, modularity and intellectualities in field of high-voltage electrical equipment.During running, the unavoidable meeting of gas insulation switch cabinet produces fault electric arc due to failure and other reasons, certainly, when this situation occurs, needs promptly to make earthed switch close a floodgate, and the continuous discharge of limit switch cabinet fault electric arc causes the accident.And the combined floodgate of earthed switch limits device by fault electric arc and realizes.
Existing switch cubicle fault electric arc limits device and uses pressure or temperature sensor collection to make inside switch cabinet gas temperature and the signal of pressure moment rising due to the huge heat that fault electric arc produces, then controlling earthing switch operating mechanism by controller drives earthed switch to close a floodgate, and the continuous discharge of limit switch cabinet fault electric arc causes the accident.This matching requirements must have temperature or pressure transducer, controller and motor-operating mechanism, and cost is high, and long for movement time to earthed switch from gathering signal.The requirement producing very first time connection earthed switch at fault electric arc can not be met.
Summary of the invention
It is an object of the invention to provide a kind of gas insulation switch cabinet fault electric arc and limit device, to solve existing fault electric arc restriction installation cost height, the problem of response time length.
Meanwhile, the present invention also aims to the triggering device providing above-mentioned gas insulated switch cabinet fault electric arc to limit device.
In order to solve the problems referred to above, the gas insulation switch cabinet fault electric arc of the present invention limits device by the following technical solutions: gas insulation switch cabinet fault electric arc limits device, including triggering device, trigger device and include cylinder body and the piston being assemblied in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at piston and is formed in part with bar chamber near push rod side, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity connects has gas to connect valve, gas connects to seal between valve and cylinder body and coordinates, the end of the close push rod of cylinder body be provided with for spacing with push rod coordinate and when the pressure that piston is sized by rodless cavity, push rod can be released spacing determine power position-limit mechanism.
It is provided with for piston is carried out spacing position limiting structure between rod chamber and the rodless cavity of described cylinder body.
The rodless cavity of described cylinder body is provided with the most penetrating opening, and described gas connects valve and is radially assemblied in described opening.
One end of the close push rod of described cylinder body is provided with cylinder cap, and the described power of determining position-limit mechanism includes the line that stretches tight being tightened on push rod.
The described line that stretches tight is around circularizing, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane gradually tilted to push rod center near one end of piston to the other end from push rod.
Gas insulation switch cabinet fault electric arc limits the triggering device of device by the following technical solutions: gas insulation switch cabinet fault electric arc limits the triggering device of device, this triggering device includes cylinder body and the piston being assemblied in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at piston and is formed in part with bar chamber near push rod side, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity connects has gas to connect valve, gas connects to seal between valve and cylinder body and coordinates, the end of the close push rod of cylinder body be provided with for spacing with push rod coordinate and when the pressure that piston is sized by rodless cavity, push rod can be released spacing determine power position-limit mechanism.
It is provided with for piston is carried out spacing position limiting structure between rod chamber and the rodless cavity of described cylinder body.
The rodless cavity of described cylinder body is provided with the most penetrating opening, and described gas connects valve and is radially assemblied in described opening.
One end of the close push rod of described cylinder body is provided with cylinder cap, and the described power of determining position-limit mechanism includes the line that stretches tight being tightened on push rod.
The described line that stretches tight is around circularizing, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane gradually tilted to push rod center near one end of piston to the other end from push rod.
The rodless cavity of the cavity limiting device due to the gas insulation switch cabinet fault electric arc of the present invention connects has gas to connect valve, and the end of close the push rod of cylinder body is provided with and coordinates for spacing with push rod and can determine power position-limit mechanism when the pressure that piston is sized by rodless cavity to push rod releasing is spacing.Therefore, valve can be connected by gas in use to be connected with gas insulation switch cabinet by cylinder body, under original state, push rod is by determining the position-limiting action of power position-limit mechanism and resting on initial position, once break down electric arc, then in gas insulation switch cabinet, when gases are heated, they expand, pressure steeply rises, thus just can order about push rod disengaging and determine the restriction of power position-limit mechanism and trigger fault electric arc and limit device device, and then order about earthed switch and be allowed to close a floodgate, the very first time i.e. occurred at fault electric arc just can order about earthed switch action, additionally, cylinder body, piston, the parts such as push rod compare to pressure transducer, temperature sensor etc., the most reliable, and it is with low cost, in sum, the gas insulation switch cabinet fault electric arc of the present invention limits device and solves existing fault electric arc restriction installation cost height, the problem of response time length.
Accompanying drawing explanation
Fig. 1 is the structural representation that gas insulation switch cabinet fault electric arc limits the embodiment triggering device of device；
Fig. 2 is the structural representation of cylinder body；
Fig. 3 is the structural representation of cylinder cap；
Fig. 4 is the structural representation of piston；
Fig. 5 is the structural representation that gas connects valve.
Detailed description of the invention
Gas insulation switch cabinet fault electric arc limits the embodiment triggering device of device, as Figure 1-5, connects valve 3 including cylinder body 1, cylinder cap 7, piston 6 and gas.
The one end open of cylinder body 1, the other end is enclosed construction, and piston 6 is assemblied in cylinder body, and it is provided with push rod near the side of the opening of cylinder body 1, so that the inner chamber of cylinder body 1 is positioned at piston 6 is formed in part with bar chamber 1-1 near push rod side, the part being positioned at piston opposite side forms rodless cavity 1-2.In the present embodiment, push rod uses multidiameter structure and is set to one with piston 6, it big footpath section including the one end near piston and path section 6-4 of the other end, in the present embodiment, one end of close path section 6-4 of the big footpath section of push rod is in outer peripheral face and is provided with plane 6-3, this plane 6-3 gradually tilts to push rod center from back to front with making to define in the big footpath section of push rod a step surface 6-2, wherein said step surface 6-2.In addition to push rod, the outer peripheral face of piston 6 is additionally provided with co-axial piston seal ring recess 6-1, piston seal ring recess 6-1 is provided with piston packing 5.
Cylinder cap 7 is located at the open end of cylinder body 1, it is bolted with cylinder body 1 and is assembled together, being respectively equipped with square groove 7-1, circular hole 7-2 and strip groove 7-3 on the medial surface of cylinder cap 7, wherein circular hole 7-2 guides with the path section of push rod and coordinates, and strip groove 7-3 intersects with circular hole 7-2.In order to realize that push rod is determined the power spacing activity of push rod (be sized under power limit), cylinder cap 7 being additionally provided with and determines power position-limit mechanism, determining power position-limit mechanism can release spacing to push rod when the pressure that piston 6 is sized by rodless cavity.In the present embodiment, determine the line 8 that stretches tight that power position-limit mechanism includes being tightened on push rod, in the present embodiment, the line 8 that stretches tight specifically uses steel wire, in the strip groove 7-3 that steel wire is assemblied on cylinder cap 7, its corresponding part stretches tight on the step surface 6-2 on push rod, and when the power of the rodless cavity suffered by piston 6 is sufficiently large, then push rod will strut and stretch tight line 8 and movable.
Gas connects valve 3 and is assemblied at the rodless cavity of cylinder body 1, sealing between its with cylinder body 1 and coordinate, in the present embodiment, the matching part being connected valve 3 with gas of cylinder body 1 is cuboid, rodless cavity is provided with the most penetrating opening, and gas connects valve 3 and is radially assemblied in described opening.Wherein gas connects one end of valve 3 is enclosuring structure and the gear edge being provided with outer in sealing end, after it passes the opening of rodless cavity, by gear along coordinating with the opening's edge block of respective openings, in order to ensure sealing therebetween, gear is along being provided with gear with the place of cooperation of cylinder body 1 along sealing ring 4；Gas connects one end away from its gear edge of valve 3 and is provided with external screw thread and passes from the opposite side opening of cylinder body, just can realize gas connection valve is strained and fixed by connecting with corresponding gas switch counter thread, simultaneously in order to ensure that the sealing between corresponding gas switch cabinet coordinates, cylinder body is additionally provided with interfacial seal circle 2.In order to ensure when direction initialization stationary housing, no matter gas connects, any angle of valve rotation can realize gas switch cabinet, gas connects UNICOM between valve and cylinder body, and valve is provided with hollow molded cavity 3-1 vertically, circumferencial direction is provided with several strip holes 3-2 in gas connection.
In gas insulation switch cabinet fault electric arc limits the other embodiments triggering device of device, determine power position-limit mechanism and can also is that slip-type friction member, spring, the rope that can break etc..
Gas insulation switch cabinet fault electric arc limits the embodiment of device, including triggering device, triggers the structure of device as Figure 1-5, and the structure of its embodiment triggering device limiting device with above-mentioned gas insulated switch cabinet fault electric arc is identical, and it will not go into details herein.
Claims (10)
1. gas insulation switch cabinet fault electric arc limits device, including triggering device, it is characterized in that, trigger device and include cylinder body and the piston being assemblied in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at piston and is formed in part with bar chamber near push rod side, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity connects has gas to connect valve, gas connects to seal between valve and cylinder body and coordinates, the end of the close push rod of cylinder body be provided with for spacing with push rod coordinate and when the pressure that piston is sized by rodless cavity, push rod can be released spacing determine power position-limit mechanism.
Gas insulation switch cabinet fault electric arc the most according to claim 1 limits device, it is characterised in that be provided with for piston is carried out spacing position limiting structure between rod chamber and the rodless cavity of described cylinder body.
Gas insulation switch cabinet fault electric arc the most according to claim 1 limits device, it is characterised in that the rodless cavity of described cylinder body is provided with the most penetrating opening, and described gas connects valve and is radially assemblied in described opening.
4. limit device according to the gas insulation switch cabinet fault electric arc described in any one of claim 1-3, it is characterised in that one end of the close push rod of described cylinder body is provided with cylinder cap, and the described power of determining position-limit mechanism includes the line that stretches tight being tightened on push rod.
Gas insulation switch cabinet fault electric arc the most according to claim 4 limits device, it is characterized in that, the described line that stretches tight is around circularizing, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane gradually tilted to push rod center near one end of piston to the other end from push rod.
6. gas insulation switch cabinet fault electric arc limits the triggering device of device, it is characterized in that, this triggering device includes cylinder body and the piston being assemblied in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at piston and is formed in part with bar chamber near push rod side, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity connects has gas to connect valve, gas connects to seal between valve and cylinder body and coordinates, the end of the close push rod of cylinder body be provided with for spacing with push rod coordinate and when the pressure that piston is sized by rodless cavity, push rod can be released spacing determine power position-limit mechanism.
Gas insulation switch cabinet fault electric arc the most according to claim 6 limits the triggering device of device, it is characterised in that be provided with for piston is carried out spacing position limiting structure between rod chamber and the rodless cavity of described cylinder body.
Gas insulation switch cabinet fault electric arc the most according to claim 6 limits the triggering device of device, it is characterised in that the rodless cavity of described cylinder body is provided with the most penetrating opening, and described gas connects valve and is radially assemblied in described opening.
9. limit the triggering device of device according to the gas insulation switch cabinet fault electric arc described in any one of claim 6-8, it is characterised in that one end of the close push rod of described cylinder body is provided with cylinder cap, and the described power of determining position-limit mechanism includes the line that stretches tight being tightened on push rod.
Gas insulation switch cabinet fault electric arc the most according to claim 9 limits the triggering device of device, it is characterized in that, the described line that stretches tight is around circularizing, described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane gradually tilted to push rod center near one end of piston to the other end from push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666842.0A CN104393523B (en) | 2014-11-20 | 2014-11-20 | Gas-insulated switch cabinet fault electric arc limit device and trigger device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666842.0A CN104393523B (en) | 2014-11-20 | 2014-11-20 | Gas-insulated switch cabinet fault electric arc limit device and trigger device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104393523A CN104393523A (en) | 2015-03-04 |
| CN104393523B true CN104393523B (en) | 2017-01-11 |
Family
ID=52611379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410666842.0A Active CN104393523B (en) | 2014-11-20 | 2014-11-20 | Gas-insulated switch cabinet fault electric arc limit device and trigger device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104393523B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104519U (en) * | 1991-08-20 | 1992-05-13 | 罗澍滋 | Line fault excising device |
| DE4330410A1 (en) * | 1993-09-08 | 1995-03-09 | Sachsenwerk Ag | Device for the detection of internal arcs (fault arcs) |
| CN201514892U (en) * | 2009-09-14 | 2010-06-23 | 中国西电电气股份有限公司 | Quick grounding switch device |
| CN102945768A (en) * | 2012-11-07 | 2013-02-27 | 中国西电电气股份有限公司 | Arc-control device of breaker |
| CN202839374U (en) * | 2012-10-13 | 2013-03-27 | 福州天宇电气股份有限公司 | Quick arc-extinguishing switch |
| CN204230741U (en) * | 2014-11-20 | 2015-03-25 | 许继集团有限公司 | A kind of gas insulation switch cabinet fault electric arc restraint device and trigger equipment thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104520U (en) * | 1991-09-19 | 1992-05-13 | 薛小平 | Fully-automatic self-protective overvoltage protector |
| JP2012209035A (en) * | 2011-03-29 | 2012-10-25 | Sumitomo Chemical Co Ltd | Arc shielding member and contact making and breaking device |
-
2014
- 2014-11-20 CN CN201410666842.0A patent/CN104393523B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104519U (en) * | 1991-08-20 | 1992-05-13 | 罗澍滋 | Line fault excising device |
| DE4330410A1 (en) * | 1993-09-08 | 1995-03-09 | Sachsenwerk Ag | Device for the detection of internal arcs (fault arcs) |
| CN201514892U (en) * | 2009-09-14 | 2010-06-23 | 中国西电电气股份有限公司 | Quick grounding switch device |
| CN202839374U (en) * | 2012-10-13 | 2013-03-27 | 福州天宇电气股份有限公司 | Quick arc-extinguishing switch |
| CN102945768A (en) * | 2012-11-07 | 2013-02-27 | 中国西电电气股份有限公司 | Arc-control device of breaker |
| CN204230741U (en) * | 2014-11-20 | 2015-03-25 | 许继集团有限公司 | A kind of gas insulation switch cabinet fault electric arc restraint device and trigger equipment thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104393523A (en) | 2015-03-04 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161019 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Applicant after: Xuji Group Co., Ltd. Applicant after: Xuchang Xuji Driescher Wegberg Electric Co., Ltd. Applicant after: State Grid Corporation of China Applicant after: STATE GRID HUBEI ELECTRIC POWER COMPANY Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Applicant before: Xuji Group Co., Ltd. Applicant before: Xuchang Xuji Driescher Wegberg Electric Co., Ltd. |
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| GR01 | Patent grant |