CN202229896U - Laser imaging positioning system of SF6 gas leaking point - Google Patents
Laser imaging positioning system of SF6 gas leaking point Download PDFInfo
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- CN202229896U CN202229896U CN2011203585447U CN201120358544U CN202229896U CN 202229896 U CN202229896 U CN 202229896U CN 2011203585447 U CN2011203585447 U CN 2011203585447U CN 201120358544 U CN201120358544 U CN 201120358544U CN 202229896 U CN202229896 U CN 202229896U
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- laser
- output terminal
- infrared thermal
- laser instrument
- thermal imagery
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Abstract
The utility model discloses a laser imaging positioning system of an SF6 (Sulfur Hexafluoride 6) gas leaking point. A main power source connects with component such as a micro controller, a laser power source, a laser device cooling system and the like respectively. The laser power source connects with a laser device. The laser device connects with a laser automatically regulating module. A laser output terminal of the laser automatically regulating module is provided with a first germanium lens. Reflection light of a to-be-detected object enters into an infrared thermal imagery receiving module through a second first germanium lens. An output terminal of the infrared thermal imagery receiving module connects with an input terminal of an optical detector. An output terminal of the optical detector connects with an input terminal of a microscopic matcher. The microscopic matcher connects with the micro controller through an amplifying module and an analog-to-digital converter successively. A display is also connected to the micro controller. The positioning system in the utility model has advantages of detecting gas leaking positions without cutting power supply of a device, guaranteeing the safe and stable operation of the power device, and the like.
Description
Technical field
The utility model relates to a kind of SF6 gas Leakage Point Location System, especially a kind of laser imaging SF 6 gas Leakage Point Location System that is used for power equipment SF6 gas Leak Detection.
Background technology
Because Sulfur Hexafluoride (SF
6) good insulating property and the arc extinction performance of gas, adopt SF
6Gas is as advantages such as the reliability that product had of insulating medium are high, maintenance workload is few, the time between overhauls(TBO) is long, compares with the traditional oils insulator arrangement to have incomparable advantage.SF
6Gas since 1940 as insulating medium, be widely used in so far in the power equipment, like primary cut-out, transformer, mutual inductor, capacitor, lightning arrester, contactor, fuse, pipeline busbar etc.Be accompanied by SF
6A large amount of uses, SF
6Leakage problem also begins to appear.Because SF
6Gas is a kind of inert gas of colorless and odorless, is difficult to find leakage position after leaking.In the actual moving process, taken place a lot of because SF
6Gas leaks and causes the case of the unplanned stoppage in transit of equipment.
Traditional leak hunting method has surface tension method, local bandaging strapping, hand-held leak locator method; These methods usually receive the restriction of equipment running status, and the scene uses very inconvenient, and precision is not high; Be difficult to accurate discovering device leakage position; And will contact with high-tension apparatus when detecting, security is relatively poor, and the operation to power equipment causes harmful effect easily.Therefore seek the SF in a kind of quick, accurate positioning trip
6The technology of air insulating device leak source seems to become particularly important.
The utility model content
The utility model is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of laser imaging SF 6 gas Leakage Point Location System is provided, so that the detection of SF6 gas leak source, and the safe and stable operation of guarantee power equipment.
The utility model adopts following technical scheme for the technical solution problem.
Laser imaging SF 6 gas Leakage Point Location System; Its design feature is to comprise microcontroller, general supply, laser instrument, Laser Power Devices, laser instrument cooling system, laser automatic adjustment unit, infrared thermal imagery receiving element, optical detector, micro-adaptation, amplifying unit, analog to digital converter and display; General supply is connected with display with microcontroller, Laser Power Devices, laser instrument cooling system, micro-adaptation, amplifying unit, analog to digital converter respectively; Laser Power Devices are connected with laser instrument and power supply are provided for laser instrument; Laser instrument is connected with the laser automatic adjustment unit, and launches after being regulated by the laser that the laser automatic adjustment unit sends laser instrument and shine on testee; The laser output of said laser automatic adjustment unit is provided with the first germanium camera lens; The reflected light of testee gets into the infrared thermal imagery receiving element through placing the infrared thermal imagery receiving element second germanium camera lens before; The output terminal of infrared thermal imagery receiving element is connected with the input end of optical detector; The output terminal of optical detector is connected with the input end of micro-adaptation; The output terminal of micro-adaptation is connected with the input end of amplifying unit, and is amplified by the output signal of amplifying unit with micro-adaptation; The input end of the output terminal connection mode number converter of amplifying unit, and the signal after will being amplified by analog to digital converter is converted into digital signal; The output terminal of analog to digital converter is connected with microcontroller, by microcontroller the digital signal of analog to digital converter output is handled, and has been judged whether that SF6 gas leaks; Also be connected with display on the said microcontroller.
The design feature of the laser imaging SF 6 gas Leakage Point Location System of the utility model also is:
Said laser instrument is CO
2Generating laser, the Wavelength of Laser that this laser instrument sends is between 9.2 μ m～11.8 μ m.
Said infrared thermal imagery receiving element is a narrowband light filter.
Compared with present technology, the utility model beneficial effect is embodied in:
Laser imaging SF 6 gas Leakage Point Location System makes full use of the infrared strong characteristic of SF6 gas absorption, common invisible SF6 gas is leaked on the imager view finder, become high-visible, thereby make the maintainer of transformer station can locate the leak position fast.Need not during detection to have a power failure, just need not contact and to see SF6 gas leakage point intuitively, improved the efficient of leakage detection greatly, guaranteed the safe operation of SF6 equipment and testing staff's safety.Adopt highly sensitive detector, have very high detection sensitivity, the SF6 gas leakage when being lower than 0.001scc/sec of can coming to light, and can clearly find leak location with imaging mode.This system performance is excellent, and steady quality has high performance price ratio.The positioning system of the utility model, have can be under the situation that equipment does not have a power failure the detected gas leakage position, can ensure the advantages such as safe and stable operation of power equipment.
Description of drawings
Fig. 1 is the system authority figure of the laser imaging SF 6 gas Leakage Point Location System of the utility model.
Fig. 2 is the detection schematic diagram of the laser imaging SF 6 gas Leakage Point Location System of the utility model.
Label in accompanying drawing 1～accompanying drawing 2: 1 microcontroller, 2 general supplies, 3 laser instruments, 4 Laser Power Devices; 5 laser instrument cooling systems, 6 laser automatic adjustment units, 7 infrared thermal imagery receiving elements, 8 optical detectors; 9 micro-adaptations, 10 amplifying units, 11 analog to digital converters, 12 displays; 13 testees, 14 first germanium camera lenses, 15 second germanium camera lenses.
Below pass through embodiment, and combine accompanying drawing that the utility model is described further.
Embodiment
Referring to Fig. 1～Fig. 2; Laser imaging SF 6 gas Leakage Point Location System comprises microcontroller 1, general supply 2, laser instrument 3, Laser Power Devices 4, laser instrument cooling system 5, laser automatic adjustment unit 6, infrared thermal imagery receiving element 7, optical detector 8, micro-adaptation 9, amplifying unit 10, analog to digital converter 11 and display 12; General supply 2 is connected with microcontroller 1, Laser Power Devices 4, laser instrument cooling system 5, micro-adaptation 9, amplifying unit 10, analog to digital converter 11 and display 12 respectively; Laser Power Devices 4 are connected with laser instrument 3 and for laser instrument 3 power supply are provided; Laser instrument 3 is connected with laser automatic adjustment unit 6, and launches after being regulated by the laser that laser automatic adjustment unit 6 sends laser instrument 3 and shine on testee 13; The laser output of said laser automatic adjustment unit 6 is provided with the first germanium camera lens 14; The reflected light of testee 13 gets into infrared thermal imagery receiving elements 7 through placing the infrared thermal imagery receiving element 7 second germanium camera lens 15 before; The output terminal of infrared thermal imagery receiving element 7 is connected with the input end of optical detector 8; The output terminal of optical detector 8 is connected with the input end of micro-adaptation 9; The output terminal of micro-adaptation 9 is connected with the input end of amplifying unit 10, and is amplified by the output signal of amplifying unit 10 with micro-adaptation 9; The input end of the output terminal connection mode number converter 11 of amplifying unit 10, and the signal after will being amplified by analog to digital converter 11 is converted into digital signal; The output terminal of analog to digital converter 11 is connected with microcontroller 1, is handled by the digital signal of 1 pair of analog to digital converter of microcontroller, 11 outputs, and has judged whether that SF6 gas leaks; Also be connected with display 12 on the said microcontroller 1.CO
2Laser incides on the testee in zone to be detected; And on the testee surface, reflect, reflected light is along original light path, turns back to the checkout equipment place again; Receive reflected light by the infrared thermal imagery receiving element, and emission light is handled by optical detector.Because tested gas SF6 and background have the differing absorption rate, the photon numbers that is reflected back to detector is different, after the data of returning are processed, forms images through display.When not existing SF6 gas to leak, the infrared energy that returns is the energy of background reflectance, can see target area infrared imaging figure on the display device.When surveyed area exists SF6 gas to leak; Because SF6 gas has the strong absorption effect to IR, can weaken sharp so reflex to the IR energy of checkout equipment this moment, SF6 gas is shown as black smoke on display device; And along with gas concentration changes; Blackness is also different, thereby has judged whether that at an easy rate gas leaks, and can judge the concentration of leaking other.The transmittance height and the printing opacity of germanium camera lens are even, are particularly useful for infrared light equipment, can improve the detection effect of system.
Said laser instrument 3 is CO
2Generating laser, the Wavelength of Laser that this laser instrument 3 sends is between 9.2 μ m～11.8 μ m.CO
2The wavelength stabilized laser that generating laser sends can improve the accuracy in detection of system.
Said infrared thermal imagery receiving element 7 is a narrowband light filter.Narrowband light filter working stability and light-filtering characteristic are good, reliability and accuracy that ability raising system detects.
SF6 gas is as the most stable greenhouse gases of having found at present, and its infrared absorption characteristic is extremely strong.The laser imaging SF 6 gas Leakage Point Location System of the utility model has made full use of this specific character of SF6 gas, makes common invisible leak source on the laser imaging view finder, become high-visible, thereby makes the maintainer of transformer station can locate the leak position fast.
The laser imaging SF 6 gas Leakage Point Location System of the utility model; Can be under the situation that equipment does not have a power failure; At a distance, high-level efficiency, safely and reliably with the gas leakage position on the electrical equipment of imaging mode accurately location directly perceived, the inspection travel personnel can in time be pinpointed the problems and handle, prevent that defective from worsening; Reduce rate of breakdown, ensure the safe and stable operation of power equipment.
Claims (3)
1. laser imaging SF 6 gas Leakage Point Location System; It is characterized in that, comprise microcontroller (1), general supply (2), laser instrument (3), Laser Power Devices (4), laser instrument cooling system (5), laser automatic adjustment unit (6), infrared thermal imagery receiving element (7), optical detector (8), micro-adaptation (9), amplifying unit (10), analog to digital converter (11) and display (12); General supply (2) is connected with microcontroller (1), Laser Power Devices (4), laser instrument cooling system (5), micro-adaptation (9), amplifying unit (10), analog to digital converter (11) and display (12) respectively; Laser Power Devices (4) are connected with laser instrument (3) and for laser instrument (3) power supply are provided; Laser instrument (3) is connected with laser automatic adjustment unit (6), and launches after being regulated by the laser that laser automatic adjustment unit (6) sends laser instrument (3) and shine on testee (13); The laser output of said laser automatic adjustment unit (6) is provided with the first germanium camera lens (14); The reflected light of testee (13) gets into infrared thermal imagery receiving element (7) through placing infrared thermal imagery receiving element (7) the second germanium camera lens (15) before; The output terminal of infrared thermal imagery receiving element (7) is connected with the input end of optical detector (8); The output terminal of optical detector (8) is connected with the input end of micro-adaptation (9); The output terminal of micro-adaptation (9) is connected with the input end of amplifying unit (10), and is amplified by the output signal of amplifying unit (10) with micro-adaptation (9); The input end of the output terminal connection mode number converter (11) of amplifying unit (10), and the signal after will being amplified by analog to digital converter (11) is converted into digital signal; The output terminal of analog to digital converter (11) is connected with microcontroller (1), by microcontroller (1) digital signal of analog to digital converter (11) output is handled, and has been judged whether that SF6 gas leaks; Also be connected with display (12) on the said microcontroller (1).
2. laser imaging SF 6 gas Leakage Point Location System according to claim 1 is characterized in that said laser instrument (3) is CO
2Generating laser, the Wavelength of Laser that this laser instrument (3) sends is between 9.2 μ m～11.8 μ m.
3. laser imaging SF 6 gas Leakage Point Location System according to claim 1 is characterized in that said infrared thermal imagery receiving element (7) is a narrowband light filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203585447U CN202229896U (en) | 2011-09-22 | 2011-09-22 | Laser imaging positioning system of SF6 gas leaking point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203585447U CN202229896U (en) | 2011-09-22 | 2011-09-22 | Laser imaging positioning system of SF6 gas leaking point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229896U true CN202229896U (en) | 2012-05-23 |
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ID=46080480
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203585447U Expired - Lifetime CN202229896U (en) | 2011-09-22 | 2011-09-22 | Laser imaging positioning system of SF6 gas leaking point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229896U (en) |
Cited By (1)
| 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) |
-
2011
- 2011-09-22 CN CN2011203585447U patent/CN202229896U/en not_active Expired - Lifetime
Cited By (1)
| 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) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |