CN201503334U - Infrared-difference SF6 quantitative leak detector - Google Patents
Infrared-difference SF6 quantitative leak detector Download PDFInfo
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- CN201503334U CN201503334U CN2009201960370U CN200920196037U CN201503334U CN 201503334 U CN201503334 U CN 201503334U CN 2009201960370 U CN2009201960370 U CN 2009201960370U CN 200920196037 U CN200920196037 U CN 200920196037U CN 201503334 U CN201503334 U CN 201503334U
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Abstract
The utility model discloses an infrared-difference SF6 quantitative leak detector, comprising a transformer, a display screen and a data processor; a parallel circuit composed of the transformer, the display screen, a battery, an input/output device and a measuring sensor is connected with the data processor; the measuring sensor is respectively connected with a light source and an air pump. The benefits of the utility model are as follows: in the utility model, the laser is adopted as the measuring means, therefore, the infrared-difference SF6 quantitative leak detector has the advantages that the measuring accuracy is high, the measuring time is short, the reproducibility is good, the sensitivity is high, and the device is free of pollution, meanwhile, during measuring, the to-be-tested substances do not need to be ionized nor locked by utilizing tracer gas with radioactivity, therefore, the new substances are not generated by ionization and the substances with radioactivity are not released when the device works; the performance price ratio of the product is high, and the maintenance cost is low.
Description
Technical field
The utility model relates to a kind of SF6 quantitative leak detector, particularly a kind of measuring accuracy height, Measuring Time weak point, favorable reproducibility, highly sensitive and be not afraid of the SF6 quantitative leak detector of pollution.
Background technology
Fast development along with power industry, the input of power industry large number quipments, especially the continuous increase of SF6 electric equipment, requirement to the Installation and Debugging of SF6 electric equipment and repair and maintenance is more and more higher, particularly to the leak detection test of SF6 electric equipment, the SF6 quantitative leak detector majority of present domestic use is the SF6 quantitative leak detector that adopts following three kinds of measuring principles:
The one, the principle SF6 quantitative leak detector of employing high pressure ionization, the type instrument adopt high voltage that SF6 gas is carried out ionization and form negative ions, calculate the leakage rate of SF6 gas according to the positive ion number of ionization formation.Because the type instrument needs ionization SF6 gas, cause the ionization part (sensor) of instrument contaminated phenomenon to occur easily.Simultaneously, because the singularity of sensor in instrument can't be safeguarded it during on-the-spot the use.If in a single day contamination phenomenon appears in sensor, unique attainable reclamation activities is more emat sensor.In addition the type instrument exists measuring accuracy not high, the problem of poor reproducibility and can only the detection of leaks amount bigger SF6 electrical equipment.
The 2nd, adopt the parital vacuum negative ion to catch the SF6 quantitative leak detector of principle, the type instrument adopts electronics to catch detection principle, locks SF6 gas flow with quantify leaks by utilization electron capture spike gas.Contain the low-power radioactive source owing to visit rifle inside, easily environment is polluted, the user of service is damaged.And Chinese market adopts the instrument of this principle to be import at present, and it is high to exist the instrument price, the problem that after-sales maintenance service can not be protected.
The 3rd, the SF6 quantitative leak detector of the principle of employing ultraviolet ionization, the type instrument adopts the principle of work of ultraviolet ionization method.Although it is measuring accuracy height, the short advantage of Measuring Time that the type instrument has; But because the sensor of this type instrument needs from external introduction, instrument also exists price phenomenon expensive, difficult in maintenance.
The utility model content
At the shortcoming of existing SF6 quantitative leak detector, the utility model provides a kind of novel measuring accuracy height, Measuring Time weak point, favorable reproducibility, highly sensitive and be not afraid of the SF6 quantitative leak detector of pollution.
To achieve these goals, the measure taked of the utility model:
A kind of infrared method of difference SF6 quantitative leak detector comprises transformer, display screen and data processor, and the parallel circuit that described transformer, display screen, battery, input-output device and survey sensor are formed is connected with data processor; Described survey sensor also is connected with air pump with light source respectively.
The beneficial effects of the utility model: owing to adopt laser as the means of measuring, so this equipment have measuring accuracy height, Measuring Time weak point, favorable reproducibility, highly sensitive, be not afraid of advantages such as pollution, and when measuring, do not need the ionization measured matter and need not to utilize active spike gas to lock measured matter, so can ionization during this equipment work do not produce new material and can not discharge by active material; Product price ratio height, maintenance cost is low.
Description of drawings
Fig. 1, functional-block diagram of the present utility model.
Embodiment
A kind of infrared method of difference SF6 quantitative leak detector comprises transformer, display screen and data processor, it is characterized in that, the parallel circuit that described transformer, display screen, battery, input-output device and survey sensor are formed is connected with data processor; Described survey sensor also is connected with air pump with light source respectively.Owing to comprise that the molecule infrared band of the chemical compound lot of SF6 all has absorbing band, the power of absorption band spectrum and the wave band at place are that the structure by molecule decides.The utility model adopts the laser spectral analysis ratio juris, utilizes SF6 gas that the characteristic absorption band of infrared spectrum is designed; Utilizing the absorption infra-red sepectrometry that the content of material is measured normally calculates according to the Beer law, just a branch of light with characteristic wavelength is passed through measured matter, owing to there is the energy of part light by measured matter the time, to be absorbed, so light path of being passed by in measured matter according to the change amount and the light of incident light energy and the density that absorbs the luminous energy material calculate the content of measured matter.The beneficial effects of the utility model: owing to adopt laser as the means of measuring, so this equipment have measuring accuracy height, Measuring Time weak point, favorable reproducibility, highly sensitive, be not afraid of advantages such as pollution, and when measuring, do not need the ionization measured matter and need not to utilize active spike gas to lock measured matter, so can ionization during this equipment work do not produce new material and can not discharge by active material; Product price ratio height, maintenance cost is low.
Those skilled in the art's simple change and replacement all are within the protection domain of the present utility model in this area.
Claims (2)
1. one kind infrared method of difference SF6 quantitative leak detector comprises transformer, display screen and data processor, it is characterized in that, the parallel circuit that described transformer, display screen, battery, input-output device and survey sensor are formed is connected with data processor.
2. a kind of infrared method of difference SF6 quantitative leak detector according to claim 1 is characterized in that described survey sensor also is connected with air pump with light source respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201960370U CN201503334U (en) | 2009-09-10 | 2009-09-10 | Infrared-difference SF6 quantitative leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201960370U CN201503334U (en) | 2009-09-10 | 2009-09-10 | Infrared-difference SF6 quantitative leak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503334U true CN201503334U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201960370U Expired - Fee Related CN201503334U (en) | 2009-09-10 | 2009-09-10 | Infrared-difference SF6 quantitative leak detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769977A (en) * | 2016-12-30 | 2017-05-31 | 武汉市欧睿科技有限公司 | A kind of hand-held high-precision gas quantitative leak detector |
-
2009
- 2009-09-10 CN CN2009201960370U patent/CN201503334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769977A (en) * | 2016-12-30 | 2017-05-31 | 武汉市欧睿科技有限公司 | A kind of hand-held high-precision gas quantitative leak detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20110910 |