CN104393523A - 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
- CN104393523A CN104393523A CN201410666842.0A CN201410666842A CN104393523A CN 104393523 A CN104393523 A CN 104393523A CN 201410666842 A CN201410666842 A CN 201410666842A CN 104393523 A CN104393523 A CN 104393523A
- Authority
- CN
- China
- Prior art keywords
- push rod
- piston
- cylinder body
- electric arc
- switch cabinet
- 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.)
- Granted
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 abstract description 3
- 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 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 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
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process 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, particularly relate to a kind of gas insulation switch cabinet fault electric arc restraint device and trigger equipment thereof.
Background technology
Gas insulation switch cabinet obtains more and more for apply widely with advantages such as its small size, modularization and intellectualities in field of high-voltage electrical equipment.In the process run, the unavoidable meeting of gas insulation switch cabinet produces fault electric arc due to failure and other reasons, and certainly, when this situation occurs, need promptly to make earthed switch close a floodgate, the continuous discharge of limit switch cabinet fault electric arc causes the accident.And the combined floodgate of earthed switch is realized by fault electric arc restraint device.
The signal that existing switch cubicle fault electric arc restraint device adopts pressure or temperature sensor collection due to huge heat that fault electric arc produces, inside switch cabinet gas temperature and pressure to be raised instantaneously, 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 sensor, controller and motor-operating mechanism, and cost is high, and long for operate time to earthed switch from collection signal.Can not meet and produce at fault electric arc the requirement that the very first time connects earthed switch.
Summary of the invention
The object of the present invention is to provide a kind of gas insulation switch cabinet fault electric arc restraint device, existing fault electric arc restraint device cost be high to solve, problem that the response time is long.
Meanwhile, the present invention also aims to the trigger equipment that above-mentioned gas insulated switch cabinet fault electric arc restraint device is provided.
In order to solve the problem, gas insulation switch cabinet fault electric arc restraint device of the present invention is by the following technical solutions: gas insulation switch cabinet fault electric arc restraint device, comprise trigger equipment, trigger equipment comprises cylinder body and is assemblied in the piston in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at the part of piston near push rod side and forms rod chamber, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity is connected with gas connection valve, be sealed and matched between gas connection valve and cylinder body, one end place of the close push rod of cylinder body is provided with for coordinating with push rod is spacing and can be subject to removing push rod when rodless cavity sets the pressure of size spacing determining power position-limit mechanism at piston.
Be provided with between the rod chamber of described cylinder body and rodless cavity for carrying out spacing position limiting structure to piston.
The rodless cavity of described cylinder body is provided with radial penetrating opening, and described gas connection valve 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 comprises the line that stretches tight be tightened on push rod.
The described wire-wound that stretches tight circularizes, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane tilted gradually to push rod center to the other end near one end of piston from push rod.
The trigger equipment of gas insulation switch cabinet fault electric arc restraint device is by the following technical solutions: the trigger equipment of gas insulation switch cabinet fault electric arc restraint device, this trigger equipment comprises cylinder body and is assemblied in the piston in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at the part of piston near push rod side and forms rod chamber, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity is connected with gas connection valve, be sealed and matched between gas connection valve and cylinder body, one end place of the close push rod of cylinder body is provided with for coordinating with push rod is spacing and can be subject to removing push rod when rodless cavity sets the pressure of size spacing determining power position-limit mechanism at piston.
Be provided with between the rod chamber of described cylinder body and rodless cavity for carrying out spacing position limiting structure to piston.
The rodless cavity of described cylinder body is provided with radial penetrating opening, and described gas connection valve 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 comprises the line that stretches tight be tightened on push rod.
The described wire-wound that stretches tight circularizes, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane tilted gradually to push rod center to the other end near one end of piston from push rod.
Because the rodless cavity of the cavity of gas insulation switch cabinet fault electric arc restraint device of the present invention is connected with gas connection valve, and one end place of the close push rod of cylinder body is provided with for coordinating with push rod is spacing and can be subject to removing push rod when rodless cavity sets the pressure of size spacing determining power position-limit mechanism at piston.Therefore, by gas connection valve, cylinder body is connected with gas insulation switch cabinet in use, under initial condition, push rod is subject to determining the position-limiting action of power position-limit mechanism and rests on initial position, the electric arc once break down, then in gas insulation switch cabinet, when gases are heated, they expand, pressure sharply rises, thus just can order about push rod and depart from and determine the restriction of power position-limit mechanism and trigger fault electric arc restraint device device, and then order about earthed switch make it close a floodgate, namely the very first time occurred at fault electric arc just can order about earthed switch action, in addition, cylinder body, piston, the parts such as push rod compare to pressure sensor, temperature sensor etc., not only reliable, and it is with low cost, in sum, it is high that gas insulation switch cabinet fault electric arc restraint device of the present invention solves existing fault electric arc restraint device cost, the problem that response time is long.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the trigger equipment of gas insulation switch cabinet fault electric arc restraint 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 of gas connection valve.
Embodiment
The embodiment of the trigger equipment of gas insulation switch cabinet fault electric arc restraint device, as Figure 1-5, comprises cylinder body 1, cylinder cap 7, piston 6 and gas connection valve 3.
The one end open of cylinder body 1, the other end is enclosed construction, piston 6 is assemblied in cylinder body, its side near the openend of cylinder body 1 is provided with push rod, make the inner chamber of cylinder body 1 be positioned at the part of piston 6 near push rod side thus and form rod chamber 1-1, the part being positioned at piston opposite side forms rodless cavity 1-2.In the present embodiment, what push rod adopted is multidiameter structure and is set to one with piston 6, it comprises the large footpath section of one end and the path section 6-4 of the other end of close piston, in the present embodiment, one end of the close path section 6-4 of the large footpath section of push rod is in outer peripheral face and is provided with plane 6-3, this plane 6-3 with make the large footpath section of push rod defines a step surface 6-2, wherein said step surface 6-2 tilts gradually to push rod center from back to front.Except push rod, the outer peripheral face of piston 6 is also provided with piston seal ring recess 6-1 coaxial with it, in 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, itself and cylinder body 1 are bolted and are assembled together, the medial surface of cylinder cap 7 is respectively equipped with square groove 7-1, circular hole 7-2 and rectangular groove 7-3, wherein circular hole 7-2 leads with the path section of push rod and coordinates, and rectangular groove 7-3 intersects with circular hole 7-2.In order to realize determining power spacing (limiting the activity of push rod under setting size power) to push rod, cylinder cap 7 is also provided with and determines power position-limit mechanism, determine power position-limit mechanism can be spacing to push rod releasing when piston 6 be subject to the pressure of rodless cavity setting size.In the present embodiment, determine power position-limit mechanism and comprise the line 8 that stretches tight be tightened on push rod, in the present embodiment, what the line 8 that stretches tight specifically adopted is steel wire, steel wire is assemblied in the rectangular groove 7-3 on cylinder cap 7, on step surface 6-2 that its corresponding part stretches tight on push rod, when the power of the rodless cavity suffered by piston 6 is enough large, then push rod will strut the line 8 and movable of stretching tight.
Gas connection valve 3 is assemblied in the rodless cavity place of cylinder body 1, be sealed and matched between itself and cylinder body 1, in the present embodiment, cylinder body 1 be cuboid with the matching part of gas connection valve 3, rodless cavity is provided with radial penetrating opening, and gas connection valve 3 is radially assemblied in described opening.Wherein one end of gas connection valve 3 is enclosuring structure and is provided with the gear edge of outer in sealing end, it is through after 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 keeps off along sealing ring 4 along being provided with the cooperation place of cylinder body 1; One end away from its gear edge of gas connection valve 3 is provided with external screw thread and passes from the opposite side opening of cylinder body, just being strained and fixed to gas connection valve can be realized by being connected with corresponding gas switch counter thread, simultaneously in order to ensure being sealed and matched between corresponding gas switch cabinet, cylinder body is also provided with interfacial seal circle 2.In order to ensure when direction initialization stationary housing, no matter gas connection valve rotates any angle can realize UNICOM between gas switch cabinet, gas connection valve and cylinder body, gas connection valve is provided with hollow molded cavity 3-1 vertically, circumferencial direction is provided with several strip holes 3-2.
In other embodiment of the trigger equipment of gas insulation switch cabinet fault electric arc restraint device, determine that power position-limit mechanism can also be slip-type friction member, spring, the rope that can break etc.
The embodiment of gas insulation switch cabinet fault electric arc restraint device, comprises trigger equipment, and as Figure 1-5, it is identical with the structure of the embodiment of the trigger equipment of above-mentioned gas insulated switch cabinet fault electric arc restraint device, and it will not go into details herein for the structure of trigger equipment.
Claims (10)
1. gas insulation switch cabinet fault electric arc restraint device, comprise trigger equipment, it is characterized in that, trigger equipment comprises cylinder body and is assemblied in the piston in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at the part of piston near push rod side and forms rod chamber, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity is connected with gas connection valve, be sealed and matched between gas connection valve and cylinder body, one end place of the close push rod of cylinder body is provided with for coordinating with push rod is spacing and can be subject to removing push rod when rodless cavity sets the pressure of size spacing determining power position-limit mechanism at piston.
2. gas insulation switch cabinet fault electric arc restraint device according to claim 1, is characterized in that, is provided with for carrying out spacing position limiting structure to piston between the rod chamber of described cylinder body and rodless cavity.
3. gas insulation switch cabinet fault electric arc restraint device according to claim 1, is characterized in that, the rodless cavity of described cylinder body is provided with radial penetrating opening, and described gas connection valve is radially assemblied in described opening.
4. the gas insulation switch cabinet fault electric arc restraint device according to any one of claim 1-3, it is characterized in that, one end of the close push rod of described cylinder body is provided with cylinder cap, the described power of determining position-limit mechanism comprises the line that stretches tight be tightened on push rod.
5. gas insulation switch cabinet fault electric arc restraint device according to claim 4, it is characterized in that, the described wire-wound that stretches tight circularizes, and described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane tilted gradually to push rod center to the other end near one end of piston from push rod.
6. the trigger equipment of gas insulation switch cabinet fault electric arc restraint device, it is characterized in that, this trigger equipment comprises cylinder body and is assemblied in the piston in cylinder body, one end of piston is provided with push rod, the inner chamber of cylinder body is positioned at the part of piston near push rod side and forms rod chamber, the part being positioned at piston opposite side forms rodless cavity, described rodless cavity is connected with gas connection valve, be sealed and matched between gas connection valve and cylinder body, one end place of the close push rod of cylinder body is provided with for coordinating with push rod is spacing and can be subject to removing push rod when rodless cavity sets the pressure of size spacing determining power position-limit mechanism at piston.
7. the trigger equipment of gas insulation switch cabinet fault electric arc restraint device according to claim 6, is characterized in that, is provided with for carrying out spacing position limiting structure to piston between the rod chamber of described cylinder body and rodless cavity.
8. the trigger equipment of gas insulation switch cabinet fault electric arc restraint device according to claim 6, is characterized in that, the rodless cavity of described cylinder body is provided with radial penetrating opening, and described gas connection valve is radially assemblied in described opening.
9. the trigger equipment of the gas insulation switch cabinet fault electric arc restraint device according to any one of claim 6-8, it is characterized in that, one end of the close push rod of described cylinder body is provided with cylinder cap, the described power of determining position-limit mechanism comprises the line that stretches tight be tightened on push rod.
10. the trigger equipment of gas insulation switch cabinet fault electric arc restraint device according to claim 9, it is characterized in that, the described wire-wound that stretches tight circularizes, described push rod is provided with the step surface coordinated with the line that stretches tight, and step surface is the inclined-plane tilted gradually to push rod center to the other end near one end of piston 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 true CN104393523A (en) | 2015-03-04 |
| CN104393523B 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 (7)
| 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 |
| 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 |
| JP2012209035A (en) * | 2011-03-29 | 2012-10-25 | Sumitomo Chemical Co Ltd | Arc shielding member and contact making and breaking 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 |
-
2014
- 2014-11-20 CN CN201410666842.0A patent/CN104393523B/en active Active
Patent Citations (7)
| 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 |
| 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 |
| JP2012209035A (en) * | 2011-03-29 | 2012-10-25 | Sumitomo Chemical Co Ltd | Arc shielding member and contact making and breaking 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 |
|---|---|
| CN104393523B (en) | 2017-01-11 |
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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 | ||
| GR01 | Patent grant |