CN201434754Y - Laser intelligent detector for SF6 gas leakage - Google Patents
Laser intelligent detector for SF6 gas leakage Download PDFInfo
- Publication number
- CN201434754Y CN201434754Y CN 200920074161 CN200920074161U CN201434754Y CN 201434754 Y CN201434754 Y CN 201434754Y CN 200920074161 CN200920074161 CN 200920074161 CN 200920074161 U CN200920074161 U CN 200920074161U CN 201434754 Y CN201434754 Y CN 201434754Y
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- China
- Prior art keywords
- laser
- detector
- germanium crystal
- crystal lens
- laser detector
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Abstract
The utility model discloses a laser intelligent detector for SF6 gas leakage. The detector comprises a laser transmitter, a laser detector, an optical system, a laser imaging device, a memorizer, a display, a CPU processor, a power supply, and a metal casing, wherein, the laser transmitter at least comprises a laser pointer; the laser detector adopts an infrared imager; the optical system adopts agroup of germanium crystal lenses which comprise a first germanium crystal lens and a second germanium crystal lens at least; the first germanium crystal lens is arranged between the laser transmitter and equipment to be detected; the second germanium crystal lens is arranged between the laser detector and the equipment to be detected; the laser imaging device further comprises a communication unit connected with the laser transmitter; and the CPU processor is connected with the laser detector, the communication unit, the memorizer and the display. The utility model has the advantages of small and exquisite appearance, portability, accurate positioning, large detection angle, timely detection, anti-jamming performance, good reliability, and the like.
Description
Technical field
The utility model relates to a kind of laser image forming apparatus, particularly relates to a kind of laser image forming apparatus that sulfur hexafluoride gas leaks that detects.
Background technology
(molecular formula is SF to sulfur hexafluoride
6) gas is owing to have good electrical isolation and arc extinction performance, is widely used in the insulating gas of all kinds of power equipments, particularly high-tension switch gear.Because leaking may appear in the restrictions such as production technology, sealing technology and site environment of power equipment, sulfur hexafluoride gas.The leakage of sulfur hexafluoride can influence performance, safe operation and even the staff's of power equipment personal safety; It also is a kind of greenhouse gases, also can cause environmental disruption in the long term.Along with the widespread use of sulfur hexafluoride in high-tension switch gear, the checkout equipment that presses for a kind of advanced person is in time found the leakage of sulfur hexafluoride gas.
Traditional sulfur hexafluoride detection method is based on the point measurement method of electrochemical sensor, and this detection means has poor stability, is difficult to avoid other gases to disturb, can not charged leak detection and shortcoming such as can not accurately locate.
The equipment that current state-of-the-art detection sulfur hexafluoride leaks is laser image forming apparatus, but also has volume heaviness, mobile difficulty; Accurate locating gas leakage point at a distance; The leak detection field angle is little, omits easily at " dead angle "; Can't find in time that gas leaks, the real-time of detection is not high; Anti-high-intensity magnetic field interference performance is poor; Testing result can't shift shortcomings such as backup.
The utility model content
Technical problem to be solved in the utility model provides a kind of laser image forming apparatus that sulfur hexafluoride gas leaks that detects, this device have small and exquisite portable, accurate positioning, detection angles big, detect advantages such as timely, anti-interference, good reliability.
For solving the problems of the technologies described above the utility model SF
6Gas leaks the intelligent laser detector and comprises:
Generating laser is carbon dioxide laser, comprises a laser designator at least;
Laser detector is the infrared imaging instrument;
Optical system is one group of germanium crystal lens, comprises the first germanium crystal lens and the second germanium crystal lens at least; The described first germanium crystal lens are between generating laser and detected equipment; The described second germanium crystal lens are between laser detector and detected equipment;
Described laser image forming apparatus also comprises the communication unit that is connected with generating laser; Storer; Display; The CPU processor that is connected with laser detector, communication unit, storer, display; Power supply; And metal shell.
Described generating laser is that wavelength is the carbon dioxide laser transmitter of 10.6 μ m; Described laser detector is that wavelength coverage is the infrared imaging instrument of 8～12 μ m.
The range of described laser designator is more than or equal to 55 meters.
Each module all adopts dismountable modular design in the utility model, makes that complete machine assembling back volume is small and exquisite portable; Include laser designator in the generating laser wherein, make under the remote situation accurately locating gas leakage point; Generating laser wherein, laser detector, optical system can be rotated arbitrarily, are particularly suitable for " dead angle " position or the outdoor detection of power equipment; CPU processor wherein can be provided with generating laser and regularly launch laser, thereby can find in time that sulfur hexafluoride gas leaks; Metal shell wherein can protect laser image forming apparatus not to be subjected to the interference of extraneous forceful electric power magnetic signal; Storer wherein can be stored testing result, is convenient to shift, back up.
Description of drawings
Fig. 1 is the utility model SF
6Gas leaks the structural representation of intelligent laser detector.
Embodiment
See also Fig. 1, the utility model SF
6Gas leaks the intelligent laser detector and comprises:
Generating laser is used to launch original beam.For example can adopt output wavelength is the carbon dioxide laser of the far infrared of 10.6 μ m.This laser instrument also comprises a laser designator at least, and the range of described laser designator is more than or equal to 55 meters.
Laser detector, be used to receive original beam through detected equipment reflect, light beam after the scattering.The detection wavelength of laser detector must be complementary with the emission wavelength of generating laser, and for example can use wavelength coverage is 8～12 infrared imaging instrument as μ m.
Optical system is one group of germanium crystal lens, comprises the first germanium crystal lens and the second germanium crystal lens at least.The described first germanium crystal lens allow the original beam of generating laser emission to pass through, and shine on the detected equipment between generating laser and detected equipment.The described second germanium crystal lens allow detected equipment to reflect or the light beam of scattering passes through between laser detector and detected equipment, and shine on the laser detector.
Communication unit is used for and the external equipment communication, for example is USB interface.Communication unit is between CPU processor and generating laser.The testing result of a whole set of laser image forming apparatus can shift or backup on the external device by communication unit.
Storer is used to store testing result, for example is hard disk.
Display is used for real-time graph demonstration testing result, for example is LCD.
The CPU processor is connected with laser detector, communication unit, storer, display.The CPU processor at first must possess timer function, and it regularly launches original beam by communication unit control generating laser, carries out regularly and detects.The CPU processor also must possess warning function, and when the testing result of laser detector showed the sulfur hexafluoride gas leakage, the CPU processor must in time send alerting signal.The CPU processor also will possess the digital signal processing function, thereby with testing result in real time, be reflected on the display graphically, and testing result is saved in the storer.
Power supply is above-mentioned each module for power supply.
Metal shell for a whole set of laser image forming apparatus provides anti-interference (at electromagnetic signal), for example can adopt stainless steel casing.
The utility model employing carbon dioxide laser transmitter and infrared detector detect the leakage of sulfur hexafluoride gas, and its principle is such.Generating laser emission infrared ray, this infrared ray incides on the detected equipment, through should be detected the infrared ray of equipment reflection or scattering received by laser detector, laser detector transfers to the CPU processor with received signal, the CPU processor passes through after the digital signal processing in the display imaging.When sulfur hexafluoride gas did not leak, the infrared energy that detects was the energy of background reflectance, equaled the energy of incident beam, can see the infrared imaging of target area on the display.When sulfur hexafluoride gas takes place to leak, because sulfur hexafluoride gas has absorption to infrared ray, therefore the infrared energy that detects can sharply weaken, promptly reflect or be scattered back the photon numbers minimizing of laser detector, can will exist the zone of sulfur hexafluoride gas to be shown as black smoke on the display, and along with the concentration of gas leakage, blackness also presents the depth.
When a branch of light intensity is I
0Directional light be the absorbing medium v of L by length after, the intensity that records at receiving end is I, according to than ear-lambert (Beer-Lambert) law: I (v)=I
0e
-c δ (v) LWherein, the absorption coefficient δ of material v (v) can look into emission and reflected light beam intensities I by database
0, I (v) and to measure the light path length L known, bring into above-mentioned formula get final product gas concentration c.Other laser spectrometry of molecular level is very sensitive, can realize being lower than the trace detection of 0.001scc/sec sulfur hexafluoride gas according to above-mentioned principle the utility model.
To be that the far infrared of 10.6 μ m is the easiest effectively absorbed by sulfur hexafluoride gas wavelength, and therefore generating laser of the present utility model preferably adopts the carbon dioxide laser of this wavelength.
Generating laser of the present utility model has laser designator, and the effect of laser designator is to make under the remote situation accurate positioning to the sulfur hexafluoride gas leakage point.For example, can realize the leakage point bearing accuracy of 55 meters outer 2cm when the range of laser designator during at 55 meters.
CPU processor of the present utility model can be controlled the intermittent emission detection laser of generating laser by communication module, and the emission cycle is adjustable.So just, avoid the equipment heating problem of long-time emission laser, increased instrument serviceable life.
The utility model structure optimization, and the theory that has adopted modular design, complete machine to assemble realize the detachable operation of each functional module.Whole apparatus system places in the stainless steel casing, has shielded the long interference of high-tension apparatus forceful electric power magnetic, carries out long on-the-spot test in 500kv transformer station, the instrument clear picture, and operation is normal.
Claims (3)
1. SF
6Gas leaks the intelligent laser detector, it is characterized in that, comprising:
Generating laser comprises a laser designator at least;
Laser detector is the infrared imaging instrument;
Optical system is one group of germanium crystal lens, comprises the first germanium crystal lens and the second germanium crystal lens at least; The described first germanium crystal lens are between generating laser and detected equipment; The described second germanium crystal lens are between laser detector and detected equipment;
Described laser image forming apparatus also comprises the communication unit that is connected with generating laser; Storer; Display; The CPU processor that is connected with laser detector, communication unit, storer, display; Power supply; And metal shell.
2. SF according to claim 1
6Gas leaks the intelligent laser detector, it is characterized in that described generating laser is that wavelength is the carbon dioxide laser transmitter of 10.6 μ m; Described laser detector is that wavelength coverage is the infrared imaging instrument of 8～12 μ m.
3. SF according to claim 1
6Gas leaks the intelligent laser detector, it is characterized in that the range of described laser designator is more than or equal to 55 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920074161 CN201434754Y (en) | 2009-06-25 | 2009-06-25 | Laser intelligent detector for SF6 gas leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920074161 CN201434754Y (en) | 2009-06-25 | 2009-06-25 | Laser intelligent detector for SF6 gas leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201434754Y true CN201434754Y (en) | 2010-03-31 |
Family
ID=42053565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920074161 Expired - Fee Related CN201434754Y (en) | 2009-06-25 | 2009-06-25 | Laser intelligent detector for SF6 gas leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201434754Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445314A (en) * | 2011-09-22 | 2012-05-09 | 安徽省电力公司合肥供电公司 | Leak point positioning system for laser imaging SF6 (Sulfur Hexafluoride 6) |
| CN102866115A (en) * | 2012-10-09 | 2013-01-09 | 李林军 | Device and method for detecting SF6 gas and decomposers of SF6 gas by mid-infrared source |
| CN104198130A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | SF6 gas leakage detection method base on fractional laser-induced breakdown spectroscopy |
| CN105651741A (en) * | 2014-12-01 | 2016-06-08 | 横河电机株式会社 | Laser gas analyzer |
| CN104198130B (en) * | 2014-09-19 | 2017-01-04 | 国家电网公司 | A kind of SF6the dot matrix LIBS detection method of gas leakage |
-
2009
- 2009-06-25 CN CN 200920074161 patent/CN201434754Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445314A (en) * | 2011-09-22 | 2012-05-09 | 安徽省电力公司合肥供电公司 | Leak point positioning system for laser imaging SF6 (Sulfur Hexafluoride 6) |
| CN102866115A (en) * | 2012-10-09 | 2013-01-09 | 李林军 | Device and method for detecting SF6 gas and decomposers of SF6 gas by mid-infrared source |
| CN104198130A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | SF6 gas leakage detection method base on fractional laser-induced breakdown spectroscopy |
| CN104198130B (en) * | 2014-09-19 | 2017-01-04 | 国家电网公司 | A kind of SF6the dot matrix LIBS detection method of gas leakage |
| CN105651741A (en) * | 2014-12-01 | 2016-06-08 | 横河电机株式会社 | Laser gas analyzer |
| CN105651741B (en) * | 2014-12-01 | 2018-10-26 | 横河电机株式会社 | Laser gas analysis device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KD INTELLIGENT + TECHNOLOGY CO., LTD Free format text: FORMER NAME: KDLN SCIENCE+TECHNOLOGY CO., LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201203, Shanghai Zhangjiang hi tech park, Pudong New Area, No. 456 blue wave road, A204 Patentee after: Shanghai CSG Smart Sci&Tech.co.,Ltd. Address before: 201203, Shanghai Zhangjiang hi tech park, Pudong New Area, No. 456 blue wave road, A204 Patentee before: Shanghai Keda Luneng Integrated Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20160625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |