CN105403369A - Method and system for detecting gas tightness of GIS (gas insulated switchgear) - Google Patents
Method and system for detecting gas tightness of GIS (gas insulated switchgear) Download PDFInfo
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- CN105403369A CN105403369A CN201510947079.3A CN201510947079A CN105403369A CN 105403369 A CN105403369 A CN 105403369A CN 201510947079 A CN201510947079 A CN 201510947079A CN 105403369 A CN105403369 A CN 105403369A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a method for detecting the air tightness of GIS equipment, which is realized on a GIS equipment sealing flange comprising an outer flange, a sealing ring and an inner flange, and the method comprises the steps of selecting a plurality of positions on the outer flange as test points, and acquiring the initial time of sound wave transmission on each test point and the stop time of the sound wave received after the sound wave transmission reaches the corresponding position of the inner flange for the first time; determining a difference value formed between the cut-off time and the initial time which are correspondingly obtained on each test point, and judging whether the difference value corresponding to each test point is within a preset time range; if yes, the GIS equipment is in a good sealing state; and if not, the GIS equipment is in a poor sealing state and generates a gas layer, and the selected position of the corresponding test point is output as the position of the gas leakage point when the difference value is not within the preset time range. By implementing the method, the air-tight state of the GIS equipment and the position of an air leakage point when the GIS equipment leaks can be accurately determined under the state that the GIS equipment is not disassembled, and the detection period can be shortened.
Description
Technical field
The present invention relates to electric system GIS device detection technique field, particularly relate to a kind of method and system for GIS device air-leakage test.
Background technology
GIS(GasInsulatedSwitchgear gas-insulated switch) equipment as a kind of power transmission and transforming equipment, in electrical network, play the conveying of electric energy, control and protection effect.Along with the rising of electric pressure, status and the application of GIS device are also more outstanding, make the stability of the reliability of GIS device on whole electric system have larger impact.
Generally speaking, GIS device is inner all with SF
6gas is filled as its insulation and arc-extinguishing medium, if there is aging or seal flange snap-in force reduction in the O-ring seal of seal flange, then can have influence on sealing function and Leakage Gas occurs, cause even the insulation of GIS device and cut-off disabler, very large harm is brought to electric system, therefore the degree of reliability of GIS device seal flange and the serviceable life of O-ring seal, particularly important in GIS device reliability consideration.
At present, GIS device reliability consideration is generally concentrated both ways, is optimize GIS device hermetically-sealed construction on the one hand, selects the encapsulant of high standard, improve the sealing ability of itself; That the GIS device sealing property put into operation is detected on the other hand, improve its operational reliability during one's term of military service, make the meaning detecting GIS sealing even more important, this not only can provide effective O&M scheme for the product put into operation, provide certain help can also to the design of GIS product, manufacture and process of the test.
In prior art, GIS device sealing property detects and adopts SF
6the method that gas leakage detector is hunted leak to detected face, but the shortcoming of this detection method is: one, test environment being required strict, because being limited to method of testing, making sense cycle longer; Two, the gas leakage degree due to GIS device is lower, very high to leak locator sensitivity requirement, thus causes testing result error comparatively large, and can only determine gas leakage scope, can not determine the position of gas leakage point.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of method and system for GIS device air-leakage test are provided, accurately can determine the position of GIS device gas leakage point, and the position of the point that leaks gas when accurately can determine GIS device airtight conditions and occur to leak under the state of GIS device of not disintegrating, shorten sense cycle, reduce testing result error.
In order to solve the problems of the technologies described above, embodiments provide a kind of method for GIS device air-leakage test, it realizes on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described method comprises:
The outer flange of described GIS device seal flange is chosen multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
To determine in each test point the difference formed between its corresponding closing time of obtaining and initial time, and judge whether difference corresponding to each test point is all positioned at default time range;
If so, then determine that described GIS device sealing state is good;
If not, then determine that described GIS device sealing state is poor and occur gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
Wherein, the work that sends and receive of described sound wave is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or is realized by sound wave generation instrument and the acoustic receiver instrument that matches thereof.
Wherein, the central axis of described sound wave transmission and the direction received and described outer flange and described inner flange is all perpendicular.
Wherein, described sound wave is single wave band or multiple wave bands with fixed frequency.
The embodiment of the present invention additionally provides a kind of system for GIS device air-leakage test, and it realizes on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described system comprises:
Test point sound wave transmitting-receiving time acquisition unit, in the outer flange at described GIS device seal flange, choose multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
Sound wave transmitting-receiving time difference judging unit, for determining in each test point the difference formed between its corresponding closing time of obtaining and initial time, and judges whether difference corresponding to each test point is all positioned at default time range;
First testing result determining unit, good for determining described GIS device sealing state;
Second testing result determining unit, for determining that described GIS device sealing state is poor and occurring gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
Wherein, the work that sends and receive of described sound wave is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or is realized by sound wave generation instrument and the acoustic receiver instrument that matches thereof.
Wherein, the central axis of described sound wave transmission and the direction received and described outer flange and described inner flange is all perpendicular.
Wherein, described sound wave is single wave band or multiple wave bands with fixed frequency.
Implement the embodiment of the present invention, there is following beneficial effect:
In embodiments of the present invention, owing to passing through acoustic wave transmission technology, whether the difference obtaining initial time closing time of first receiving corresponding to it that GIS device each test point sends is positioned at default time range, differentiate GIS device sealing state, and further difference is not positioned at the corresponding test point position of default time range as the position output of gas leakage point, thus accurately can determine the position of GIS device gas leakage point, utilize the transport property of sound wave simultaneously, substantially increase measurement sensitivity and precision, can sense cycle be shortened, reduce testing result error.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, the accompanying drawing obtaining other according to these accompanying drawings still belongs to category of the present invention.
The process flow diagram of a kind of method for GIS device air-leakage test that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of system for GIS device air-leakage test that Fig. 2 provides for the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, be a kind of method for GIS device air-leakage test that the embodiment of the present invention provides, it realizes (not shown) on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described method comprises:
Step S101, in the outer flange of described GIS device seal flange, choose multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
Step S102, to determine in each test point the difference that formed between its corresponding closing time of obtaining and initial time, and judge whether difference corresponding to each test point is all positioned at default time range; If so, then next step S103 is performed; If not, then step S104 is jumped to;
Step S103, determine that described GIS device sealing state is good;
Step S104, determine that described GIS device sealing state is poor and occur gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
In embodiments of the present invention, the work that sound wave sends and receives is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or is realized by sound wave generation instrument and the acoustic receiver instrument that matches thereof.But sending sound wave and receiving in the process of sound wave, the central axis of the direction that sound wave sends and receives and outer flange and inner flange is all perpendicular, ensures that sound wave is vertically injected in GIS device, to reduce the physical deterioration that wave reflection brings as much as possible.Wherein, sound wave is single wave band or multiple wave bands with fixed frequency.
It should be noted that sound wave needs to possess good transmission performance in GIS device, by the adjustment of frequency of sound wave to reach optimum condition.
In one embodiment, the time range value preset is a fixed value (as this fixed value 0), and the time interval making sound wave arrive inner flange correspondence position from any point position of outer flange is fixed.
As shown in Figure 2, in the embodiment of the present invention, a kind of system for GIS device air-leakage test provided, it realizes on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described system comprises:
Test point sound wave transmitting-receiving time acquisition unit 210, in the outer flange at described GIS device seal flange, choose multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
Sound wave transmitting-receiving time difference judging unit 220, for determining in each test point the difference formed between its corresponding closing time of obtaining and initial time, and judges whether difference corresponding to each test point is all positioned at default time range;
First testing result determining unit 230, good for determining described GIS device sealing state;
Second testing result determining unit 240, for determining that described GIS device sealing state is poor and occurring gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
Wherein, the work that sends and receive of described sound wave is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or sound wave generation instrument and the acoustic receiver instrument that matches thereof.
Wherein, the central axis of described sound wave transmission and the direction received and described outer flange and described inner flange is all perpendicular.
Wherein, described sound wave is single wave band or multiple wave bands with fixed frequency.
Implement the embodiment of the present invention, there is following beneficial effect:
In embodiments of the present invention, owing to passing through acoustic wave transmission technology, whether the difference obtaining initial time closing time of first receiving corresponding to it that GIS device each test point sends is positioned at default time range, differentiate GIS device sealing state, and further difference is not positioned at the corresponding test point position of default time range as the position output of gas leakage point, thus accurately can determine the position of GIS device gas leakage point, utilize the transport property of sound wave simultaneously, substantially increase measurement sensitivity and precision, can sense cycle be shortened, reduce testing result error.
It should be noted that in said system embodiment, each included system unit is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (8)
1. for a method for GIS device air-leakage test, it is characterized in that, it realizes on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described method comprises:
The outer flange of described GIS device seal flange is chosen multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
To determine in each test point the difference formed between its corresponding closing time of obtaining and initial time, and judge whether difference corresponding to each test point is all positioned at default time range;
If so, then determine that described GIS device sealing state is good;
If not, then determine that described GIS device sealing state is poor and occur gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
2. the method for claim 1, is characterized in that, the work that described sound wave sends and receives is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or realized by sound wave generation instrument and the acoustic receiver instrument that matches thereof.
3. method as claimed in claim 2, is characterized in that, the central axis of the direction that described sound wave sends and receives and described outer flange and described inner flange is all perpendicular.
4. method as claimed in claim 3, it is characterized in that, described sound wave is single wave band or multiple wave bands with fixed frequency.
5. for a system for GIS device air-leakage test, it is characterized in that, it realizes on the GIS device seal flange comprising outer flange, O-ring seal and inner flange, and described system comprises:
Test point sound wave transmitting-receiving time acquisition unit, in the outer flange at described GIS device seal flange, choose multiple position as test point, and obtain initial time and closing time received after arriving described inner flange correspondence position first thereof that in each test point, sound wave sends;
Sound wave transmitting-receiving time difference judging unit, for determining in each test point the difference formed between its corresponding closing time of obtaining and initial time, and judges whether difference corresponding to each test point is all positioned at default time range;
First testing result determining unit, good for determining described GIS device sealing state;
Second testing result determining unit, for determining that described GIS device sealing state is poor and occurring gas blanket, and when one or more difference not all being positioned at described default time range, the selected location of corresponding test point exports as gas leakage point position.
6. system as claimed in claim 5, is characterized in that, the work that described sound wave sends and receives is realized by sound wave generating loop and the acoustic receiver loop of matching thereof or realized by sound wave generation instrument and the acoustic receiver instrument that matches thereof.
7. system as claimed in claim 6, is characterized in that, the central axis of the direction that described sound wave sends and receives and described outer flange and described inner flange is all perpendicular.
8. system as claimed in claim 7, it is characterized in that, described sound wave is single wave band or multiple wave bands with fixed frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510947079.3A CN105403369A (en) | 2015-12-16 | 2015-12-16 | Method and system for detecting gas tightness of GIS (gas insulated switchgear) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510947079.3A CN105403369A (en) | 2015-12-16 | 2015-12-16 | Method and system for detecting gas tightness of GIS (gas insulated switchgear) |
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| Publication Number | Publication Date |
|---|---|
| CN105403369A true CN105403369A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510947079.3A Pending CN105403369A (en) | 2015-12-16 | 2015-12-16 | Method and system for detecting gas tightness of GIS (gas insulated switchgear) |
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| CN (1) | CN105403369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709282A (en) * | 2019-02-25 | 2019-05-03 | 深圳供电局有限公司 | GIS equipment and test connector thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160614A (en) * | 1996-11-27 | 1998-06-19 | Tokyo Gas Co Ltd | Acoustic device for specifying leakage position |
| CN101587005A (en) * | 2009-06-15 | 2009-11-25 | 江苏泰事达电气有限公司 | Acoustic velocimetry SF6 gas leakage monitoring and warning system |
| CN102889968A (en) * | 2012-10-12 | 2013-01-23 | 河海大学常州校区 | Acoustical method and device for detecting low-concentration sulfur hexafluoride gas |
| CN203337612U (en) * | 2013-07-12 | 2013-12-11 | 常州顺创电气科技有限公司 | SF6 gas leakage alarming and oxygen content monitoring system |
-
2015
- 2015-12-16 CN CN201510947079.3A patent/CN105403369A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160614A (en) * | 1996-11-27 | 1998-06-19 | Tokyo Gas Co Ltd | Acoustic device for specifying leakage position |
| CN101587005A (en) * | 2009-06-15 | 2009-11-25 | 江苏泰事达电气有限公司 | Acoustic velocimetry SF6 gas leakage monitoring and warning system |
| CN102889968A (en) * | 2012-10-12 | 2013-01-23 | 河海大学常州校区 | Acoustical method and device for detecting low-concentration sulfur hexafluoride gas |
| CN203337612U (en) * | 2013-07-12 | 2013-12-11 | 常州顺创电气科技有限公司 | SF6 gas leakage alarming and oxygen content monitoring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709282A (en) * | 2019-02-25 | 2019-05-03 | 深圳供电局有限公司 | GIS equipment and test connector thereof |
| CN109709282B (en) * | 2019-02-25 | 2024-05-14 | 深圳供电局有限公司 | GIS equipment's test connector and GIS equipment |
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Application publication date: 20160316 |
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