CN108760159A - It is a kind of to use SF6Gas carries out the device and method of shell leak detection - Google Patents
It is a kind of to use SF6Gas carries out the device and method of shell leak detection Download PDFInfo
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- CN108760159A CN108760159A CN201810400205.7A CN201810400205A CN108760159A CN 108760159 A CN108760159 A CN 108760159A CN 201810400205 A CN201810400205 A CN 201810400205A CN 108760159 A CN108760159 A CN 108760159A
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- Prior art keywords
- water
- shell
- flange
- water pocket
- leak detection
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
SF is used the present invention relates to a kind of6Gas carries out the device of shell leak detection, water-in flange and inlet flange including being sealedly connected on shell both ends, the inlet flange is equipped with inflating port and observation window, it is sealedly connected with water pocket on the one side of the water-in flange, connection water pocket and extraneous water filling port are offered in water-in flange, and the liquid outlet above the water filling port, dismountable blocking is both provided at the water filling port, liquid outlet and inflating port.In the use of the present invention, first injecting liquid in water pocket, so that water pocket volume is increased, to reduce the volume between water pocket and shell, pour SF6When gas, due to the small volume between water pocket and shell, reduce SF6The dosage of gas reduces leak detection cost.
Description
Technical field
The present invention relates to gas insulated metal enclosed swit chgear shell leak hunting technology field more particularly to it is a kind of use SF6Gas into
The device and method of row shell leak detection.
Background technology
As China's economy continues to develop, the demand of electric power also expands increasingly, closed group of especially each voltage class
Electric appliance is closed to be greatly developed.Such product is at runtime, it is necessary to assure SF6 gas pressures in shell are ensured with this
Insulating properties, therefore need to be sealed leak detection to each shell in production.However these shell lengths are different, and volume compared with
Greatly, it hunts leak if directly filling SF6 gases to inside, inevitable dosage is very big, leads to the increase of leak detection cost.
Invention content
SF is used in view of the deficiencies of the prior art, the present invention provides a kind of6Gas carries out the device and method of shell leak detection,
Gas usage, but also wide adaptability is not only greatly reduced.
The present invention is achieved through the following technical solutions, provides a kind of using SF6Gas carries out the device of shell leak detection,
Water-in flange and inlet flange including being sealedly connected on shell both ends, the inlet flange are equipped with inflating port and observation window,
It is sealedly connected with water pocket on the one side of the water-in flange, connection water pocket and extraneous water filling port are offered in water-in flange,
And the liquid outlet above the water filling port, it is both provided at the water filling port, liquid outlet and inflating port dismountable stifled
Plug.
This programme when in use, first injects liquid in water pocket, so that water pocket volume is increased, to reduce water pocket and shell
Between volume, pour SF6When gas, due to the small volume between water pocket and shell, reduce SF6The dosage of gas,
Reduce leak detection cost.
As an optimization, the silk plug blocked to be connected through a screw thread with water-in flange or inlet flange.Blocking is selected as
Silk plug, dismounting it is more convenient, sealing it is highly reliable.
As an optimization, further include the vacuum extractor being detachably connected to the water filling port or liquid outlet.It is taken out by being arranged
Vacuum pumping in water pocket can be convenient for the injection of liquid, convenient for grasping fluid injection situation by pressure by vacuum plant.
As an optimization, the pressure gauge of detection water intraluminal pressure is additionally provided in the water-in flange.Water is detected by pressure gauge
Intracapsular pressure is more convenient the control fluid injection time.
It is a kind of to use SF6The method that gas carries out shell leak detection, includes the following steps：
（1）Water-in flange and inlet flange are sealed respectively and are fixed on shell both ends, and water pocket is put in shell；
（2）Liquid is injected in water pocket by the water filling port in water-in flange, and the variation of water pocket state is observed by observation window,
After water pocket expansion fully, stop injection liquid, and water filling port and the liquid outlet above water filling port is blocked using blocking；
（3）SF is poured into shell by inflating port6Gas stops gas punching until when air pressure reaches 0.3 ~ 0.5Mpa in shell
Enter, is blocked inflating port using blocking；
（4）The weld seam on shell is detected using leak detector；
（5）After the completion of detection, SF is first extracted out6Then gas discharges the liquid in water pocket.
This method makes its volume increase by the fluid injection in water pocket, to reduce inflatable space in shell, reduces
SF6The dosage of gas reduces leak detection cost, and this method is easy to operate, and applicability is wide, can be applied to plurality of specifications
Shell leak detection.
As an optimization, the step（2）Middle water pocket expansion fully refers to that liquid outlet has liquid outflow.By from liquid outlet
The basis for estimation that trickle is completed as fluid injection, method is simple, is conducive to improve working efficiency.
As an optimization, the step（2）In, liquid outlet is first passed through to being vacuumized in water pocket, blocks up fluid hole after vacuumizing
Firmly, liquid is then injected in water pocket again, the water pocket expansion in this step fully refers to that water intraluminal pressure reaches 0.1Mpa.Pass through
Water pocket internal pressure judges whether fluid injection is enough, can make the amount of liquid bigger of injection, to be further reduced SF6Gas is used
Amount.
Beneficial effects of the present invention are：Increase water pocket volume by injecting liquid in water pocket, to reduce in shell
Inflatable volume, reduces SF6Gas usage, reduces production cost, and with it is simple in structure, be easily installed and tie up
The features such as repairing, is safe and reliable has preferable practicability and promotion prospect.
Description of the drawings
Fig. 1 is water pocket fluid injection pre-structure schematic diagram of the present invention；
Fig. 2 is structural schematic diagram after water pocket fluid injection of the present invention；
As shown in the figure：
1, water filling port, 2, water-in flange, 3, liquid outlet, 4, shell, 5, water pocket, 6, observation window, 7, inflating port, 8, inlet flange,
9, liquid, 10, SF6Gas.
Specific implementation mode
In order to clarify the technical characteristics of the invention, below by specific implementation mode, this programme is illustrated.
It is a kind of to use SF6Gas carries out the device of shell leak detection, including is sealedly connected on the water-in flange 2 at 4 both ends of shell
With inlet flange 8, the inlet flange 8 is equipped with inflating port 7 and observation window 6, the company of sealing on the one side of the water-in flange 2
It is connected to water pocket 5, connection water pocket and extraneous water filling port 1 are offered in water-in flange 2, and above the water filling port 1
The silk plug being connected through a screw thread with water-in flange is both provided at liquid outlet 3, the water filling port 1 and liquid outlet 3, at inflating port 7
It is provided with the silk plug being connected through a screw thread with inlet flange.
The present embodiment further includes the vacuum extractor being detachably connected to the liquid outlet, and detection is additionally provided in water-in flange
The pressure gauge 11 of water intraluminal pressure.When vacuumizing, the exhaust tube of vacuum extractor is connected to liquid outlet, after exhausting, will be evacuated
Pipe is removed from liquid outlet, and liquid outlet is sealed using silk plug.
The shell leak hunting method carried out using above-mentioned apparatus, is included the following steps：
（1）Water-in flange and inlet flange are sealed respectively and are fixed on shell both ends, and water pocket is put in shell；
（2）Liquid 9 is injected in water pocket by the water filling port in water-in flange, the liquid 9 in the present embodiment is water, and passes through sight
The variation for examining window observation water pocket state after water pocket expands fully, stops injection liquid, and using blocking by water filling port and positioned at note
Liquid outlet above the mouth of a river is blocked；
（3）SF is poured into shell by inflating port6Gas 10 stops gas until when air pressure reaches 0.3 ~ 0.5Mpa in shell
It pours, is blocked inflating port using blocking；
（4）The weld seam on shell is detected using leak detector；
（5）After the completion of detection, inflating port is passed through into pipeline and SF6Gas concentration unit is connected to, by the SF in shell6Gas is taken out
Go out, retracting device pressure recovery is -0.0.5MPa, then discharges the liquid in water pocket.
Preferably, step（2）Middle water pocket expansion fully can refer to that liquid outlet has liquid outflow.
As another preferred embodiment, step（2）In, liquid outlet is first passed through to being vacuumized in water pocket, and liquid will be gone out after vacuumizing
Hole is blocked, and then injects liquid in water pocket again, and the water pocket expansion in this step fully refers to that water intraluminal pressure reaches 0.1Mpa.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or
It is realized using the prior art, details are not described herein；Above example and attached drawing are only used to illustrate the technical scheme of the present invention not
It is limitation of the present invention, is described the invention in detail with reference to preferred embodiment, the ordinary skill people of this field
Member is it should be appreciated that variation, remodeling, the addition that those skilled in the art are made in the essential scope of the present invention
Or replace the claims that should also belong to the present invention without departure from spirit of the invention.
Claims (7)
1. a kind of using SF6Gas carries out the device of shell leak detection, it is characterised in that：Including being sealedly connected on shell（4）Both ends
Water-in flange（2）And inlet flange（8）, the inlet flange（8）It is equipped with inflating port（7）And observation window（6）, described into water law
It is blue（2）One side on be sealedly connected with water pocket（5）, water-in flange（2）On offer connection water pocket and extraneous water filling port
（1）, and it is located at the water filling port（1）The liquid outlet of top（3）, the water filling port（1）, liquid outlet（3）And inflating port（7）Place
It is both provided with dismountable blocking.
2. according to claim 1 a kind of using SF6Gas carries out the device of shell leak detection, it is characterised in that：The blocking
For the silk plug being connected through a screw thread with water-in flange or inlet flange.
3. according to claim 1 a kind of using SF6Gas carries out the device of shell leak detection, it is characterised in that：Further include with
The vacuum extractor that the water filling port or liquid outlet are detachably connected to.
4. according to claim 3 a kind of using SF6Gas carries out the device of shell leak detection, it is characterised in that：The water inlet
The pressure gauge of detection water intraluminal pressure is additionally provided on flange（11）.
5. a kind of using SF6The method that gas carries out shell leak detection, which is characterized in that include the following steps：
（1）Water-in flange and inlet flange are sealed respectively and are fixed on shell both ends, and water pocket is put in shell；
（2）Liquid is injected in water pocket by the water filling port in water-in flange, and the variation of water pocket state is observed by observation window,
After water pocket expansion fully, stop injection liquid, and water filling port and the liquid outlet above water filling port is blocked using blocking；
（3）SF is poured into shell by inflating port6Gas stops gas punching until when air pressure reaches 0.3 ~ 0.5Mpa in shell
Enter, is blocked inflating port using blocking；
（4）The weld seam on shell is detected using leak detector；
（5）After the completion of detection, SF is first extracted out6Then gas discharges the liquid in water pocket.
6. according to claim 5 a kind of using SF6The method that gas carries out shell leak detection, it is characterised in that：The step
（2）Middle water pocket expansion fully refers to that liquid outlet has liquid outflow.
7. according to claim 5 a kind of using SF6The method that gas carries out shell leak detection, it is characterised in that：The step
（2）In, liquid outlet is first passed through to being vacuumized in water pocket, and fluid hole is blocked after vacuumizing, then injects liquid in water pocket again,
Water pocket expansion in this step fully refers to that water intraluminal pressure reaches 0.1Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400205.7A CN108760159A (en) | 2018-04-28 | 2018-04-28 | It is a kind of to use SF6Gas carries out the device and method of shell leak detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400205.7A CN108760159A (en) | 2018-04-28 | 2018-04-28 | It is a kind of to use SF6Gas carries out the device and method of shell leak detection |
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| CN108760159A true CN108760159A (en) | 2018-11-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903203A (en) * | 2021-01-27 | 2021-06-04 | 中核能源科技有限公司 | Large-scale container positive pressure helium mass spectrometry detection system and detection method |
| CN114993845A (en) * | 2022-08-01 | 2022-09-02 | 浙江大学 | Pipeline air pressure testing device and method |
| CN118150057A (en) * | 2024-05-13 | 2024-06-07 | 三峡物资招标管理有限公司 | Positive pressure leakage detection method for main seal of transformer |
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| US20180080848A1 (en) * | 2016-09-16 | 2018-03-22 | Gregory M. McCollom | Flexible universal bladder tool for detecting leaks in a closed fluid system |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
| CN208109341U (en) * | 2018-04-28 | 2018-11-16 | 山东泰开高压开关有限公司 | It is a kind of to use SF6The device of gas progress shell leak detection |
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2018
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| US6233908B1 (en) * | 1998-12-24 | 2001-05-22 | Autoliv Asp, Inc. | Method of introducing a leak trace material into an airbag inflator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903203A (en) * | 2021-01-27 | 2021-06-04 | 中核能源科技有限公司 | Large-scale container positive pressure helium mass spectrometry detection system and detection method |
| CN114993845A (en) * | 2022-08-01 | 2022-09-02 | 浙江大学 | Pipeline air pressure testing device and method |
| CN118150057A (en) * | 2024-05-13 | 2024-06-07 | 三峡物资招标管理有限公司 | Positive pressure leakage detection method for main seal of transformer |
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