CN106441746A - Gas leakage speed detector specially used for GIS equipment - Google Patents
Gas leakage speed detector specially used for GIS equipment Download PDFInfo
- Publication number
- CN106441746A CN106441746A CN201610803685.2A CN201610803685A CN106441746A CN 106441746 A CN106441746 A CN 106441746A CN 201610803685 A CN201610803685 A CN 201610803685A CN 106441746 A CN106441746 A CN 106441746A
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- CN
- China
- Prior art keywords
- air bag
- gas leakage
- slide rheostat
- gis device
- box body
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to a gas leakage speed detector specially used for GIS equipment. The detector comprises a box and a pipe joint arranged in the bottom end of the box body, an air bag cabin is arranged in the box body, one side of the air bag cabin is provided with a slide rheostat, the middle portion of the slide rheostat is provided with a moving contact, the air bag cabin is internally provided with an upper air bag and a lower air bag, both the upper and lower air bags are sealed, a driving plate which drives the moving contact to slide is arranged between the upper and lower air bags, the upper air bag is internally filled with gas, and the bottom end of the lower air bag is communicated with the pipe joint via a gas pipe; and the slide rheostat is connected with a capacitor in parallel, and a capacitor branch is connected with a main current relay and a main analog-to-digital conversion module. The detector can detect the gas leakage speed accurately, discovers unqualified equipment timely, eliminates defects and hidden troubles of the equipment, and also has the advantages including being simple in structure and convenient to use, reducing the workload of daily maintenance greatly and reducing the maintenance cost.
Description
Technical field
The present invention relates to GIS combination electric appliance equipment runs security fields, specifically one kind is used for detecting sulfur hexafluoride
The device of gas leakage speed.
Background technology
GIS（Gas Insulated Substation）Combined electrical apparatus, i.e. gas-insulating and fully-enclosed combined electrical apparatus, it is by breaking
The composition such as road device, disconnecting switch, earthed switch, transformer, spark gap, bus, connector and outlet terminal, these equipment or portion
Part is all enclosed in the shell of metallic ground, is filled with the SF6 insulating gas of certain pressure inside it, and also referred to as SF6 is totally-enclosed
Combined electrical apparatus.GIS combination electric appliance equipment, by the strong insulating properties of sulfur hexafluoride gas and heat loss through convection performance, can be greatly improved
The insulating properties of equipment and arc quenching characteristic, are widely used in high pressure, ultrahigh voltage power field.
GIS combination electric appliance equipment needs to have good sealing property,《GB7674-2008 rated voltage 72.5kV and
Above Cubicle Gas-Insulated Switchgear》5.15.101 bar specifies：Between equipment operation lifecycle, arbitrary single from GIS
It is spaced the leak rate leaking between air and compartment and be not to be exceeded annual 0.5%.It can be seen that, to GIS device sealing property in standard
Very strict during requirement, existing GIS device does not have the means being capable of detected gas leakage rate of correlation, thus can not be timely
Find non-conforming equipment, be that equipment safety stable operation leaves hidden danger.Existing gas leak detection apparatus are substantially gas pressure
Force checking device, when that is, after gas leakage, pressure is reduced to setting value, detection means starts alert notice, currently without for gas
The detection means of body leakage rate.
Based on the problems referred to above, it is contemplated that research and development one kind timely and effective can detect SF6 in GIS combination electric appliance equipment
The device of gas leakage rate.Application with GIS combination electric appliance equipment is more and more extensive, and the work of equipment gas leakage QI invigorating is also more next
More, the detection means using the present invention quickly can timely find gas leakage equipment, and equipment is carried out with defect elimination process, can pole
Big minimizing maintenance repair workload, reduces the cost of overhaul.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of GIS device special gas to reveal speed detector, this inspection
Survey device can accurately detected gas leakage rate, find non-conforming equipment so as to timely, and defect elimination process carried out to equipment
To remove a hidden danger, whole device structure is simple, easy to use, can be significantly reduced maintenance repair workload and reduce and overhaul into
This.
For solving above-mentioned technical problem, the GIS device special gas leakage rate detection means of the present invention include box body and
It is arranged on the pipe joint of box body bottom, pipe joint is connected on GIS device housing and is connected with device interior compressed gas, its knot
Structure feature is setting air bag cabin in described box body, the wherein side setting slide rheostat in air bag cabin, the middle part of slide rheostat
Install slip contact, air bag cabin be internally provided with air bag and lower gasbag, two air bags all seal setting and two air bags between set
Be equipped with the driving plate for driving slip contact to slide, gassy in upper air bag, the bottom of lower gasbag pass through gas piping with
Pipe joint connects；Slide rheostat is in parallel with an electric capacity, and capacitive branch is connected with the principal current for controlling primary alarm circuit
Relay and the master mold modular converter for sending digital alarm signal to background monitoring machine.
The sidepiece in described air bag cabin offers the chute stretching out for driving plate, and the overhanging end of driving plate is with slip contact even
Connect.
Described primary alarm circuit includes main alarming horn loop, and the normally opened contact of described main current relay is connected on main report
In alert loudspeaker loop.
Described primary alarm circuit includes main signal relay circuit, and the normally opened contact of described main current relay is connected on master
In signal relay loop.
Series connection fixed value resistance, the secondary current relay for controlling secondary warning circuit on the electric power loop of described slide rheostat
Device and the secondary analog-to-digital conversion module for gas pressure signal being transformed to digital signal.
Described box body leading section is provided with gauge outfit, gauge outfit is provided with the display screen being connected with secondary analog-to-digital conversion module and
Button for operating display.
The operation principle of the present invention is：Lower gasbag is connected with the compressed gas in GIS device, and upper and lower air bag forms balance
Rock-steady structure, upper air bag gassy and sealing setting, in it, pressure is constant, and lower gasbag occurs pressure drop in equipment gas leakage
Low phenomenon, thus the driving plate between two air bags can be led to be subjected to displacement, and then drives slip contact to move, slip contact moves
The resistance making slide rheostat changes.It can be seen that, by arranging two air bags, airbag chamber and slide rheostat so that the therapeutic method to keep the adverse QI flowing downwards
The minor variations of intraluminal pressure reflect in the change in resistance of slide rheostat, by said structure, arrange an electric capacity and cunning
Dynamic varistors in parallel, when the change in resistance of slide rheostat, capacitive branch induces electric current, and this branch current passes through master
Analog-digital converter changes into digital signal and passes to background computer so that monitor in real time, when this branch current is whole more than main current relay
During definite value, main current relay action, its normally opened contact closes, thus start warning circuit being reported to the police, reminds staff
Arrive in the very nick of time scene exclusion leakage hidden danger.
The invention has the advantages that：
1）Energy in time detection of the present invention goes out the minor variations of gas pressure in GIS device, reflects the variable quantity of gas pressure, that is,
Detection is gas leakage rate, rather than commonly used at present just reporting to the police only when gas pressure drops to setting value,
Because when gas pressure drops to setting value, equipment much cannot meet the standard that leak rate is less than annual 0.5%,
Equipment has run for a long time already under unqualified state, there is very big potential safety hazard；
2）Alarm signal can directly adopt the structure of alarming horn, it would however also be possible to employ the structure of signal relay, using signal
Control other linkage action, for example, control and close switchgear related to GIS device etc., thus being further ensured that peace
Quan Xing；
3）Fixed value resistance is connected with slide rheostat and is formed major loop, and the secondary current relay accessing in major loop and secondary modulus turn
In order to detect GIS device air chamber actual pressure, when reduced pressure to alarming value or locking value, secondary current relay moves parallel operation
Make, send alarm signal or block signal, and real-time air chamber pressure value is reported background computer.Setting display screen can be used for showing in real time
Show gas pressure value information in GIS device, facilitate staff to observe.
In sum, the present invention can accurately detected gas leakage rate, find non-conforming equipment so as to timely, and right
Equipment carries out defect elimination and processes to remove a hidden danger, and whole device has that structure is simple, easy to use, can be significantly reduced maintenance repair
Workload and the advantage reducing the cost of overhaul.
Brief description
With reference to the accompanying drawings and detailed description the present invention is described in further detail：
Fig. 1 is the positive structure schematic of the present invention；
Fig. 2 is the side structure schematic view of the present invention；
Fig. 3 is the cross section structure diagram of the present invention；
Fig. 4 is the circuit principle structure schematic diagram of the present invention；
Fig. 5 is the circuit principle structure schematic diagram in alarming horn loop in the present invention；
Fig. 6 is the circuit principle structure schematic diagram in signal relay loop in the present invention.
Specific embodiment
Referring to the drawings, the GIS device special gas leakage rate detection means of the present invention includes box body 1 and is arranged on box body
The pipe joint 2 of 1 bottom, pipe joint 2 is connected on GIS device housing and is connected with device interior compressed gas, setting in box body 1
Air bag cabin 3, the wherein side setting slide rheostat R in air bag cabin 3, slip contact, air bag cabin are installed in the middle part of slide rheostat R
3 be internally provided with air bag 4 and lower gasbag 5, two air bags all seal setting and two air bags between be provided with for drive slide
The driving plate 6 that contact slides, the sidepiece in air bag cabin 3 offers the chute stretching out for driving plate 6, the overhanging end of driving plate 6 and cunning
Movable contact spring connects.Gassy in upper air bag 4, the bottom of lower gasbag 5 is connected with pipe joint 2 by gas piping 7；Slip variable resistance
Device R is in parallel with an electric capacity C, electric capacity C branch road is connected with for control primary alarm circuit main current relay KA and for
Background monitoring machine sends the master mold modular converter 8 of digital alarm signal.
The operation principle of the present invention is：Lower gasbag 5 is connected with the compressed gas in GIS device, and upper and lower air bag forms balance
Rock-steady structure, upper air bag 4 gassy and sealing setting, in it, pressure is constant, and lower gasbag 5 occurs pressure in equipment gas leakage
Reduce phenomenon, thus the driving plate between two air bags can be led to be subjected to displacement, and then drive slip contact to move, slip contact moves
Moving makes the resistance of slide rheostat change.It can be seen that, by two air bags, airbag chamber and slide rheostat are set so that under
In air bag 5, the minor variations of pressure reflect in the change in resistance of slide rheostat, by said structure, arrange an electric capacity C
In parallel with slide rheostat R, power supply U takes 220V DC source, can choose power supply from DC screen of transformer substation, as slide rheostat R
Change in resistance when, electric capacity C branch road induces electric current, this branch current by main mould number converter 8 change into numeral letter
Number pass to background computer so that monitor in real time, when this branch current is more than the setting valve of main current relay KA, principal current relay
Device KA action, its normally opened contact closes, thus start primary alarm circuit being reported to the police, reminds staff that the scene of arriving in the very nick of time is arranged
Except leakage hidden danger.
Wherein, primary alarm circuit includes main alarming horn loop, and the normally opened contact of main current relay KA is connected on main report
In alert loudspeaker loop.Primary alarm circuit also includes main signal relay circuit, and the normally opened contact of main current relay KA is connected on
In main signal relay circuit.Alarm signal can directly adopt the structure of alarming horn 13, it would however also be possible to employ signal relay
14 structure, controls other linkage actions using signal relay 14, for example, controls and close the switchgear related to GIS device
Deng thus being further ensured that safety.
Referring to the drawings, series connection fixed value resistance R ', the pair for controlling secondary warning circuit on the electric power loop of slide rheostat R
Electric current relay KA ' and the secondary analog-to-digital conversion module 9 for gas pressure signal being transformed to digital signal.Box body 1 front end
Portion is provided with gauge outfit 10, gauge outfit 10 is provided with the display screen 11 being connected with secondary analog-to-digital conversion module and is used for operating display
11 button 12.Fixed value resistance R ' is connected with slide rheostat R and forms major loop, the secondary current relay accessing in major loop
KA ' and secondary analog-digital converter 9 are in order to detect GIS device air chamber actual pressure, when reduced pressure to alarming value or locking value, secondary
Electric current relay KA ' action, sends alarm signal or block signal, and real-time air chamber pressure value is reported background computer.Secondary current
The warning circuit that relay KA ' controls may also be employed and primary alarm circuit identical circuit structure, will not be described here.Setting is aobvious
Display screen 11 can be used for showing gas pressure value information in GIS device in real time, facilitates staff to observe.
In sum, the invention is not restricted to above-mentioned specific embodiment.Those skilled in the art, without departing from the present invention's
On the premise of spirit and scope, some changes and modification can be done.Protection scope of the present invention should be with the claim of the present invention
It is defined.
Claims (6)
1. a kind of GIS device special gas leakage rate detection means, including box body（1）Be arranged on box body（1）The pipe of bottom
Joint（2）, pipe joint（2）It is connected on GIS device housing and connects with device interior compressed gas, it is characterized in that described box body
（1）Interior setting air bag cabin（3）, air bag cabin（3）Wherein side setting slide rheostat（R）, slide rheostat（R）Middle part peace
Dress slip contact, air bag cabin（3）Be internally provided with air bag（4）And lower gasbag（5）, two air bags all seal setting and two air bags
Between be provided with for drive slip contact slide driving plate（6）, upper air bag（4）Interior gassy, lower gasbag（5）Bottom
By gas piping（7）With pipe joint（2）Connection；Slide rheostat（R）With an electric capacity（C）Parallel connection, electric capacity（C）Connect on branch road
There is the main current relay for controlling primary alarm circuit（KA）With the master for sending digital alarm signal to background monitoring machine
Analog-to-digital conversion module（8）.
2. GIS device special gas leakage rate detection means as claimed in claim 1, is characterized in that described air bag cabin（3）
Sidepiece offer and supply driving plate（6）The chute stretching out, driving plate（6）Overhanging end be connected with slip contact.
3. GIS device special gas leakage rate detection means as claimed in claim 1, is characterized in that described primary alarm circuit
Including main alarming horn loop, described main current relay（KA）Normally opened contact be connected in main alarming horn loop.
4. GIS device special gas leakage rate detection means as claimed in claim 1, is characterized in that described primary alarm circuit
Including main signal relay circuit, described main current relay（KA）Normally opened contact be connected in main signal relay circuit.
5. the GIS device special gas leakage rate detection means as any one of claim 1-4, is characterized in that described
Slide rheostat（R）Electric power loop on connect fixed value resistance（R’）, for controlling the secondary current relay of secondary warning circuit
（KA’）And for gas pressure signal being transformed to the secondary analog-to-digital conversion module of digital signal（9）.
6. GIS device special gas leakage rate detection means as claimed in claim 5, is characterized in that described box body（1）Before
End is provided with gauge outfit（10）, gauge outfit（10）On the display screen being connected with secondary analog-to-digital conversion module is installed（11）And be used for grasping
Make display screen（11）Button（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803685.2A CN106441746A (en) | 2016-09-06 | 2016-09-06 | Gas leakage speed detector specially used for GIS equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803685.2A CN106441746A (en) | 2016-09-06 | 2016-09-06 | Gas leakage speed detector specially used for GIS equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441746A true CN106441746A (en) | 2017-02-22 |
Family
ID=58164382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610803685.2A Pending CN106441746A (en) | 2016-09-06 | 2016-09-06 | Gas leakage speed detector specially used for GIS equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441746A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106949331A (en) * | 2017-05-02 | 2017-07-14 | 华北理工大学 | Gas flow angle detecting threeway |
| CN107748039A (en) * | 2017-09-14 | 2018-03-02 | 国家电网公司 | The quick quantitative detecting method that do not have a power failure of GIS device gas leakage based on helium tracer |
| CN108458256A (en) * | 2018-05-17 | 2018-08-28 | 庄燕婷 | A kind of protective device for petroleum pipeline junction |
| CN109738134A (en) * | 2019-01-03 | 2019-05-10 | 林建立 | Battery for electric automobile cabinet air-tightness detection device |
| CN109764249A (en) * | 2019-03-12 | 2019-05-17 | 北京百度网讯科技有限公司 | Gas leak detection apparatus |
| CN110487879A (en) * | 2019-09-05 | 2019-11-22 | 郑州维纳实验设备有限公司 | A kind of gas alarm detection device |
| CN114295303A (en) * | 2021-08-20 | 2022-04-08 | 襄阳新舟自动化科技有限公司 | Lifeboat airtightness detector and detection method thereof |
| CN115597001A (en) * | 2022-09-05 | 2023-01-13 | 安徽壹月科技有限公司（Cn） | Special gas flow distribution box with multi-branch pressure independent adjusting structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107748039A (en) * | 2017-09-14 | 2018-03-02 | 国家电网公司 | The quick quantitative detecting method that do not have a power failure of GIS device gas leakage based on helium tracer |
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| CN114295303A (en) * | 2021-08-20 | 2022-04-08 | 襄阳新舟自动化科技有限公司 | Lifeboat airtightness detector and detection method thereof |
| CN115597001A (en) * | 2022-09-05 | 2023-01-13 | 安徽壹月科技有限公司（Cn） | Special gas flow distribution box with multi-branch pressure independent adjusting structure |
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Application publication date: 20170222 |