CN110487487A - A kind of transformer respiratory system leak hunting method based on infrared imagery technique - Google Patents
A kind of transformer respiratory system leak hunting method based on infrared imagery technique Download PDFInfo
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- CN110487487A CN110487487A CN201910908187.8A CN201910908187A CN110487487A CN 110487487 A CN110487487 A CN 110487487A CN 201910908187 A CN201910908187 A CN 201910908187A CN 110487487 A CN110487487 A CN 110487487A
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- Prior art keywords
- sulfur hexafluoride
- hexafluoride gas
- transformer
- oil conservater
- respiratory system
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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
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
Abstract
The application belongs to electric device maintenance technical field more particularly to a kind of transformer respiratory system leak hunting method based on infrared imagery technique.This application discloses a kind of transformer respiratory system leak hunting method based on infrared imagery technique, comprising the following steps: the oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder；The valve for opening sulfur hexafluoride gas cylinder, is filled with sulfur hexafluoride gas to oil conservater capsule by oil conservater corrugated hose；The drain tap for opening oil conservater two sides is exhausted；Continue the valve that sulfur hexafluoride gas cylinder is closed after being filled with sulfur hexafluoride gas toward oil conservater capsule and keeping preset time；It whether there is sulfur hexafluoride gas using sulfur hexafluoride infrared thermoviewer detection each position of transformer respiratory system, judge the leakproofness of transformer respiratory system according to testing result.The present processes have the advantages that detection accuracy is high and intuitive quick, meanwhile, the scope of application is wider, is suitable for promoting and applying in industry.
Description
Technical field
This application involves electric device maintenance technical fields more particularly to a kind of transformer based on infrared imagery technique to exhale
Desorption system leak hunting method.
Background technique
Unique channel that transformer respiratory system is in communication with the outside as transformer, when the inside oil level of transformer is because of temperature
When increasing and inflation status occur, the air in capsule is squeezed；When inside transformer oil temperature reduces, external air is sucked
In capsule, to keep the relative balance state of transformer oil level.When transformer respiratory system leaks, capsule can not pass through
Respiration adjusts the variation of transformer oil level, while being also easy to bring the substances such as extraneous moisture, gas into transformer into,
It causes moisture in transformer insulation oil, air content exceeded, reduce inside transformer insulation and accelerates Transformer Insulation Aging rate,
Transformer safety operation is adversely affected.
The method of detection transformer respiratory system leakproofness is mainly filled with by the breathing pipeline in oil conservater not low at present
The capsule in oil conservater is heaved in -40 DEG C of nitrogen or dry air, gas a small amount of in oil conservater is discharged, until oil conservater
Until the vent valve bleed of top, after the air in oil conservater is emptied, vent valve is tightened, then again by nitrogen or dry air
It is filled in capsule from respirator mouth, so that applying 30kPa static pressure at the top of oil conservater pasta, closes each valve, keep 30kPa
Static pressure continues 24 hours, and pressure value cannot be less than exerted pressure worth 90% after 24 hours.Such method was not only time-consuming but also inaccurate
Really, be affected when execute-in-place by ambient temperature, can not intuitive judgment capsule leakproofness quality.
Based on the above circumstances, the application, can rapidly, intuitively using infrared imagery technique using sulfur hexafluoride gas as medium
Ground judges transformer respiratory system with the presence or absence of leakage problems.
Summary of the invention
This application provides a kind of transformer respiratory system leak hunting method based on infrared imagery technique, to solve current inspection
The problem that survey method is time-consuming and accuracy is not high.
The application the technical solution adopted is as follows:
A kind of transformer respiratory system leak hunting method based on infrared imagery technique, comprising the following steps:
The oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder；
The valve for opening sulfur hexafluoride gas cylinder, is filled with sulfur hexafluoride gas to oil conservater capsule by oil conservater corrugated hose
Body；
The drain tap for opening oil conservater two sides is exhausted；
Continue the valve that sulfur hexafluoride gas cylinder is closed after being filled with sulfur hexafluoride gas toward oil conservater capsule and keeping preset time
Door；
It whether there is sulfur hexafluoride gas, root using sulfur hexafluoride infrared thermoviewer detection each position of transformer respiratory system
The leakproofness of transformer respiratory system is judged according to testing result.
Optionally, in the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, packet
It includes:
The oil conservater corrugated hose of transformer is connected by valve and pressure reducing valve with sulfur hexafluoride gas cylinder.
Optionally, in the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, institute
The humidity of the sulfur hexafluoride gas in sulfur hexafluoride gas cylinder is stated not higher than 40.6 μ L/L, purity is not less than 99.9%, air content
Not higher than 0.03%.
Optionally, in the step of drain tap for opening oil conservater two sides is exhausted, comprising:
The drain tap for opening oil conservater two sides closes oil conservater two sides when the drain tap flows out transformer oil
Drain tap.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
In the step of changing the valve of sulphur gas cylinder, comprising:
When the sulfur hexafluoride gas pressure being filled in oil conservater capsule reaches 30kpa, the valve of sulfur hexafluoride gas cylinder is closed
Door is simultaneously tightened.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
In the step of changing the valve of sulphur gas cylinder, the preset time is 1 hour.
Optionally, it whether there is sulfur hexafluoride using sulfur hexafluoride infrared thermoviewer detection transformer respiratory system described
Gas, in the step of judging the leakproofness of transformer respiratory system according to testing result, comprising:
Each line connection of transformer respiratory system is checked using sulfur hexafluoride infrared thermoviewer, whether there is at each valve
Sulfur hexafluoride gas, and the drain tap of oil conservater two sides is opened, it detects and whether there is sulfur hexafluoride gas at drain tap.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
It is further comprising the steps of after the step of changing the valve of sulphur gas cylinder:
Sulfur hexafluoride gas cylinder is moved to the region that pre-determined distance is reached with transformer, using scavenger fan to where transformer
The air in region is taken a breath.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
After the valve step for changing sulphur gas cylinder, further includes: be sealed to the interface of oil conservater corrugated hose and sulfur hexafluoride gas cylinder.
Optionally, after the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder,
Further include: in the oil conservater corrugated hose side of the transformer, highly sensitive pressure gauge is set.
It is had the beneficial effect that using the technical solution of the application:
From the above technical scheme, the transformer respiratory system leak hunting method based on infrared imagery technique of the application,
It include: that the oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder；The valve for opening sulfur hexafluoride gas cylinder, passes through
Oil conservater corrugated hose is filled with sulfur hexafluoride gas to oil conservater capsule；The drain tap for opening oil conservater two sides is exhausted；
Continue the valve that sulfur hexafluoride gas cylinder is closed after being filled with sulfur hexafluoride gas toward oil conservater capsule and keeping preset time；Use six
Sulfur fluoride infrared thermoviewer, which detects each position of transformer respiratory system, whether there is sulfur hexafluoride gas, judge according to testing result
The leakproofness of transformer respiratory system.
Medium used in this application is sulfur hexafluoride, and sulfur hexafluoride (sulfur hexafluoride) is a kind of nothing
Color, odorless, nontoxic, non-ignitable stabilizing gas, sulfur hexafluoride have very strong absorption characteristic to the infrared light of specific band.It is infrared
The characteristics of spectral technique, is high sensitivity, is not protected from environmental and interferes, and is brought to the variation of the temperature and humidity of environment
Detection error very little.Therefore, the present processes have the advantages that detection accuracy is high and intuitive quick, meanwhile, the scope of application
It is wider, it is suitable for promoting and applying in industry.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the flow diagram of the embodiment of the present application；
Fig. 2 is the application scenarios schematic diagram of the embodiment of the present application.
Specific embodiment
Embodiment will be illustrated in detail below, the example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings,
Unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Implement described in following embodiment
Mode does not represent all embodiments consistent with the application.It is only and be described in detail in claims, the application
The example of the consistent system and method for some aspects.
Referring to Fig. 1 and Fig. 2, it is easy to understand following embodiments of the application.
A kind of transformer respiratory system leak hunting method based on infrared imagery technique provided by the present application, including following step
It is rapid:
The oil conservater corrugated hose of transformer is connected by S101 with sulfur hexafluoride gas cylinder；
S102 opens the valve of sulfur hexafluoride gas cylinder, is filled with by oil conservater corrugated hose to oil conservater capsule lithium
Sulphur gas；
S103, the drain tap for opening oil conservater two sides are exhausted；
S104 continues to be filled with sulfur hexafluoride gas toward oil conservater capsule and closes sulfur hexafluoride gas cylinder after keeping preset time
Valve；
S105 whether there is sulfur hexafluoride gas using sulfur hexafluoride infrared thermoviewer detection each position of transformer respiratory system
Body judges the leakproofness of transformer respiratory system according to testing result.
In the present embodiment, by by original gas discharge completely, is more conducive to mentioning in oil conservater capsule in transformer
The accuracy of high the present embodiment；If there are leakage points in transformer respiratory system, by being full of inside it by sulfur hexafluoride,
Leaked gas is sulfur hexafluoride rather than other gases, increases detection accuracy while improving detection efficiency.
Optionally, in the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, packet
It includes:
The oil conservater corrugated hose of transformer is connected by valve and pressure reducing valve with sulfur hexafluoride gas cylinder.
In the present embodiment, by setting valve and pressure reducing valve, it can be effectively controlled and be filled with gas in transformer respiratory system
Pressure, ensure inflation it is uniform, stablize carry out.
Optionally, in the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, institute
The humidity of the sulfur hexafluoride gas in sulfur hexafluoride gas cylinder is stated not higher than 40.6 μ L/L, purity is not less than 99.9%, air content
Not higher than 0.03%.
In the present embodiment, the humidity, purity and air content of sulfur hexafluoride are further limited, in order to
A more accurate measurement is obtained as a result, These parameters can meet measurement accuracy requirement very well.
Optionally, in the step of drain tap for opening oil conservater two sides is exhausted, comprising:
The drain tap for opening oil conservater two sides closes oil conservater two sides when the drain tap flows out transformer oil
Drain tap.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
In the step of changing the valve of sulphur gas cylinder, comprising:
When the sulfur hexafluoride gas pressure being filled in oil conservater capsule reaches 30kpa, the valve of sulfur hexafluoride gas cylinder is closed
Door is simultaneously tightened.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
In the step of changing the valve of sulphur gas cylinder, the preset time is 1 hour.
Optionally, it whether there is sulfur hexafluoride using sulfur hexafluoride infrared thermoviewer detection transformer respiratory system described
Gas, in the step of judging the leakproofness of transformer respiratory system according to testing result, comprising:
Each line connection of transformer respiratory system is checked using sulfur hexafluoride infrared thermoviewer, whether there is at each valve
Sulfur hexafluoride gas, and the drain tap of oil conservater two sides is opened, it detects and whether there is sulfur hexafluoride gas at drain tap.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
It is further comprising the steps of after the step of changing the valve of sulphur gas cylinder:
Sulfur hexafluoride gas cylinder is moved to the region that pre-determined distance is reached with transformer, using scavenger fan to where transformer
The air in region is taken a breath.
Optionally, continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and close hexafluoro after keeping preset time described
After the valve step for changing sulphur gas cylinder, further includes: be sealed to the interface of oil conservater corrugated hose and sulfur hexafluoride gas cylinder.
In the present embodiment, the interface of oil conservater corrugated hose and sulfur hexafluoride gas cylinder is sealed, interface can be prevented
It causes sulfur hexafluoride to leak due to poorly sealed, and then influences measurement result, form erroneous judgement.
Optionally, after the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder,
Further include: in the oil conservater corrugated hose side of the transformer, highly sensitive pressure gauge is set.
In the present embodiment, by the way that highly sensitive pressure gauge is arranged, further it can whether there is sulfur hexafluoride gas by subsidiary
The leakage of body, it is ensured that the accuracy of detection.
The transformer respiratory system leak hunting method based on infrared imagery technique of the application, comprising: by the oil storage of transformer
Cabinet corrugated hose is connected with sulfur hexafluoride gas cylinder；The valve for opening sulfur hexafluoride gas cylinder, by oil conservater corrugated hose to storage
Oil Tank capsule is filled with sulfur hexafluoride gas；The drain tap for opening oil conservater two sides is exhausted；Continue to fill toward oil conservater capsule
Enter sulfur hexafluoride gas and keeps the valve of closing sulfur hexafluoride gas cylinder after preset time；It is examined using sulfur hexafluoride infrared thermoviewer
Surveying each position of transformer respiratory system whether there is sulfur hexafluoride gas, judge the close of transformer respiratory system according to testing result
Feng Xing.
Medium used in this application is sulfur hexafluoride, and sulfur hexafluoride (sulfur hexafluoride) is a kind of nothing
Color, odorless, nontoxic, non-ignitable stabilizing gas, sulfur hexafluoride have very strong absorption characteristic to the infrared light of specific band.It is infrared
The characteristics of spectral technique, is high sensitivity, is not protected from environmental and interferes, and is brought to the variation of the temperature and humidity of environment
Detection error very little.Therefore, the present processes have the advantages that detection accuracy height and rapid and convenient, meanwhile, the scope of application
It is wider, it is suitable for promoting and applying in industry.
Similar portion cross-reference between embodiment provided by the present application, specific embodiment provided above is only
It is several examples under the total design of the application, does not constitute the restriction of the application protection scope.For those skilled in the art
For member, any other embodiment expanded without creative efforts according to application scheme all belongs to
In the protection scope of the application.
Claims (10)
1. a kind of transformer respiratory system leak hunting method based on infrared imagery technique, which comprises the following steps:
The oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder；
The valve for opening sulfur hexafluoride gas cylinder, is filled with sulfur hexafluoride gas to oil conservater capsule by oil conservater corrugated hose；
The drain tap for opening oil conservater two sides is exhausted；
Continue the valve that sulfur hexafluoride gas cylinder is closed after being filled with sulfur hexafluoride gas toward oil conservater capsule and keeping preset time；
It whether there is sulfur hexafluoride gas using sulfur hexafluoride infrared thermoviewer detection each position of transformer respiratory system, according to inspection
Survey the leakproofness that result judges transformer respiratory system.
2. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
In the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, comprising:
The oil conservater corrugated hose of transformer is connected by valve and pressure reducing valve with sulfur hexafluoride gas cylinder.
3. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
In the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, in the sulfur hexafluoride gas cylinder
Sulfur hexafluoride gas humidity be not higher than 40.6 μ L/L, purity be not less than 99.9%, air content be not higher than 0.03%.
4. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
In the step of drain tap for opening oil conservater two sides is exhausted, comprising:
The drain tap for opening oil conservater two sides closes the row of oil conservater two sides when the drain tap flows out transformer oil
Air valve.
5. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
It is described continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and keep preset time after close sulfur hexafluoride gas cylinder valve
The step of in, comprising:
When the sulfur hexafluoride gas pressure being filled in oil conservater capsule reaches 30kpa, the valve of sulfur hexafluoride gas cylinder is closed simultaneously
It tightens.
6. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
It is described continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and keep preset time after close sulfur hexafluoride gas cylinder valve
The step of in, the preset time be 1 hour.
7. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
It whether there is sulfur hexafluoride gas using sulfur hexafluoride infrared thermoviewer detection transformer respiratory system described, tied according to detection
Fruit judged in the step of leakproofness of transformer respiratory system, comprising:
Each line connection of transformer respiratory system is checked using sulfur hexafluoride infrared thermoviewer, whether there is hexafluoro at each valve
Change sulphur gas, and open the drain tap of oil conservater two sides, detects and whether there is sulfur hexafluoride gas at drain tap.
8. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
It is described continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and keep preset time after close sulfur hexafluoride gas cylinder valve
The step of after, it is further comprising the steps of:
Sulfur hexafluoride gas cylinder is moved to the region that pre-determined distance is reached with transformer, using scavenger fan to transformer region
Air take a breath.
9. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, which is characterized in that
It is described continue to be filled with sulfur hexafluoride gas toward oil conservater capsule and keep preset time after close sulfur hexafluoride gas cylinder valve
After step, further includes: be sealed to the interface of oil conservater corrugated hose and sulfur hexafluoride gas cylinder.
10. the transformer respiratory system leak hunting method according to claim 1 based on infrared imagery technique, feature exist
In after the described the step of oil conservater corrugated hose of transformer is connected with sulfur hexafluoride gas cylinder, further includes: described
Highly sensitive pressure gauge is arranged in the oil conservater corrugated hose side of transformer.
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| CN201910908187.8A CN110487487A (en) | 2019-09-25 | 2019-09-25 | A kind of transformer respiratory system leak hunting method based on infrared imagery technique |
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Cited By (1)
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