CN105699016A - Total reflection-based converting plant coolant leakage detection system and detection method - Google Patents
Total reflection-based converting plant coolant leakage detection system and detection method Download PDFInfo
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- CN105699016A CN105699016A CN201610144844.2A CN201610144844A CN105699016A CN 105699016 A CN105699016 A CN 105699016A CN 201610144844 A CN201610144844 A CN 201610144844A CN 105699016 A CN105699016 A CN 105699016A
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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
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Abstract
The invention discloses a total reflection-based converting plant coolant leakage detection system. the laser control instruction output end of a computer is connected with the signal input end of a laser controller; the laser control signal output end of the laser controller is connected with the laser control signal input end of a laser generator; the laser output end of the laser generator is connected with the incident laser input end of a total reflection coolant leakage laser detector via an optical fiber; the reflective laser output end of the total reflection coolant leakage laser detector is connected with the laser signal input end of the laser detector via an optical fiber; a digital electric signal output end of the laser detector is connected with the reflective laser electric signal input end of the computer; the laser generator and the laser detector are both arranged on a support and both the laser generator and the laser detector are both located right above the total reflection coolant leakage laser detector. Whether the cooling liquid of a converting valve cooling system can be detected in real time, and the converting value inside the converting plant can be ensured to operate safetly.
Description
Technical field
The present invention relates to converting equipment detection technique field, in particular to a kind of converting plant coolant leak detection system based on total reflection and method。
Background technology
Converter valve in converting plant can produce substantial amounts of heat in running, and the converter valve in converting plant must use coolant to carry out cooling heat radiation。, can there is the risk of cooling liquid leakage in converter valve cooling system longtime running。There is presently no whether the cooling liquid in converter valve cooling system leaks the device being monitored, there is bigger potential safety hazard。
Summary of the invention
Present invention aim to provide a kind of converting plant coolant leak detection system based on total reflection and method, whether converter valve cooling system can be cooled down liquid and leak and detect in real time by this system and method, it is ensured that the converter valve safe operation in converting plant。
For realizing this purpose, the converting plant coolant leak detection system based on total reflection designed by the present invention, it includes computer, laser controller, laser generator, laser detector, it is fixed on the ground support in converting plant, it is arranged on the liquid dish below converter valve cooling system, it is fixed on the total reflection leakage laser detector that liquid dish is tried to get to the heart of a matter, the laser controlling instruction output end of described computer connects the signal input part of laser controller, the laser control signal outfan of laser controller connects the laser control signal input of laser generator, the laser output of laser generator connects the incident laser input of total reflection leakage laser detector by the first optical fiber, the reflection laser output of total reflection leakage laser detector connects the laser signal input of laser detector by the second optical fiber, the digital electric signal outfan of laser detector connects the reflection laser electric signal input end of computer, described laser generator and laser detector are installed on support, and laser generator and laser detector are respectively positioned on the surface of total reflection leakage laser detector。
A kind of method utilizing above-mentioned system to carry out coolant Leak Detection, it is characterised in that it comprises the steps:
Step 1: converting plant coolant leak detection system initializes；
Step 2: it is the incident laser of 5KHZ that computer controls laser generator tranmitting frequency by laser controller, frequency is the incident laser input that the incident laser of 5KHZ enters total reflection leakage laser detector through the first optical fiber；
Step 3: the incident laser that frequency is 5KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector, and the laser of reflection is transferred to computer after being gathered by laser detector and converting the signal of telecommunication to；
Step 4: computer judges that the reflected laser signals that step 3 is received whether be frequency is the total reflection signal of the incident laser of 5KHZ, if it is, enter step 5, if it is not, then computer carries out coolant leakage alarm；
Step 5: it is the incident laser of 10KHz that computer controls laser generator tranmitting frequency by laser controller, frequency is the incident laser input that the incident laser of 10KHZ enters total reflection leakage laser detector through the first optical fiber；
Step 6: the incident laser that frequency is 10KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector, and the laser of reflection is transferred to computer after being gathered by laser detector and converting the signal of telecommunication to；
Step 7: computer judges that the reflected laser signals that step 6 is received whether be frequency is the total reflection signal of the incident laser of 10KHZ, if it is, enter step 8, if it is not, then computer carries out coolant leakage alarm；
Step 8: it is the incident laser of 100KHZ that computer controls laser generator tranmitting frequency by laser controller, frequency is the incident laser input that the incident laser of 100KHZ enters total reflection leakage laser detector through the first optical fiber；
Step 9: the incident laser that frequency is 100KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector, and the laser of reflection is transferred to computer after being gathered by laser detector and converting the signal of telecommunication to；
Step 10: computer judges that the reflected laser signals that step 9 is received whether be frequency is the total reflection signal of the incident laser of 100KHZ, if it is, computer notice does not have coolant to leak, if it is not, then computer carries out coolant leakage alarm。
The operation principle of the present invention is: computer controls laser generator by laser controller and launches laser, laser enters total reflection leakage laser detector, when converter valve cooling system does not leak coolant (recirculated water or recycle oil), incident laser is totally reflected in total reflection leakage laser detector, and reflected signal converts to through laser detector and is transferred to computer after the signal of telecommunication。
When converter valve cooling system has coolant to leak, the coolant of leakage is leaked in liquid dish, now the detecting head surface in total reflection leakage laser detector can form moisture film, owing to total reflection leakage laser detector is different with the optical index of air to coolant, when moisture film can make the total reflection phenomenon of total reflection leakage laser detector disappear after occurring, the reflected signal being so transferred to computer through laser detector can change with not having leakage, Computer starts alarm equipment alarm after calculating this change, and reminding technology personnel have coolant to leak。
Whether the converter valve cooling system coolant in converting plant can be leaked by the present invention carries out detecting accurately in real time, it is ensured that the converter valve safe operation in converting plant。Meanwhile, the detection of the present invention adopts laser signal, and the electrical equipment in converting plant and cooling system will not produce any interference, and laser signal can high temperature, high vibration in valve tower, the environment of highfield ensures the accuracy of testing result。
As long as it addition, converter valve cooling system has coolant to leak, will producing moisture film on total reflection leakage detection probe surface, whether cooling system occurs leaking, and does not have the situation of leak water detdction time delay in such present invention just real-time detecting of energy。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
Wherein, 1 computer, 2 laser controllers, 3 laser generators, 4 laser detectors, 5 liquid dish, 6 alarms, 7 total reflection leakage laser detector, 8 supports, 9 first optical fiber, 10 second optical fiber。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
The converting plant coolant leak detection system based on total reflection as described in Figure 1, it includes computer 1, laser controller 2, laser generator 3, laser detector 4, it is fixed on the ground support 8 in converting plant, it is arranged on the liquid dish 5 below converter valve cooling system, it is fixed on the total reflection leakage laser detector 7 that liquid dish 5 is tried to get to the heart of a matter, the laser controlling instruction output end of described computer 1 connects the signal input part of laser controller 2, the laser control signal outfan of laser controller 2 connects the laser control signal input of laser generator 3, the laser output of laser generator 3 connects the incident laser input of total reflection leakage laser detector 7 by the first optical fiber 9, the reflection laser output of total reflection leakage laser detector 7 connects the laser signal input of laser detector 4 by the second optical fiber 10, the digital electric signal outfan of laser detector 4 connects the reflection laser electric signal input end of computer 1, described laser generator 3 and laser detector 4 are installed on support 8, and laser generator 3 and laser detector 4 are respectively positioned on the surface of total reflection leakage laser detector 7。The position that arranges of laser generator 3 and laser detector 4 ensure that incident laser and the straightline propagation of reflection laser, it is ensured that the real-time of coolant Leak Detection result and accuracy。
In technique scheme, computer 1 and laser controller 2 can be placed in optional position in the station not affecting converting plant work。
In technique scheme, it also includes alarm 6, and the alarm signal output ends of described computer 1 connects the signal input part of alarm 6。Alarm 6 is for reminding staff when there is coolant leakage。
In technique scheme, the frequency range of the laser of the laser output output of described laser generator 3 is 5KHz～100KHz。The laser launching said frequencies scope when detection can prevent the situation of missing inspection and flase drop。
In technique scheme, the detecting lenses of above-mentioned total reflection leakage laser detector 7 is right-angle prismatic lens head。
A kind of method utilizing said system to carry out coolant Leak Detection, it comprises the steps:
Step 1: converting plant coolant leak detection system initializes；
Step 2: it is the incident laser of 5KHZ that computer 1 controls laser generator 3 tranmitting frequency by laser controller 2, frequency is the incident laser input that the incident laser of 5KHZ enters total reflection leakage laser detector 7 through the first optical fiber 9；
Step 3: the incident laser that frequency is 5KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector 7, and the laser of reflection is transferred to computer 1 after being gathered and convert to the signal of telecommunication by laser detector 4；
Step 4: computer 1 judges that the reflected laser signals that step 3 is received whether be frequency is the total reflection signal of the incident laser of 5KHZ, if it is, enter step 5, if it is not, then computer 1 carries out coolant leakage alarm；
Step 5: it is the incident laser of 10KHz that computer 1 controls laser generator 3 tranmitting frequency by laser controller 2, frequency is the incident laser input that the incident laser of 10KHZ enters total reflection leakage laser detector 7 through the first optical fiber 9；
Step 6: the incident laser that frequency is 10KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector 7, and the laser of reflection is transferred to computer 1 after being gathered and convert to the signal of telecommunication by laser detector 4；
Step 7: computer 1 judges that the reflected laser signals that step 6 is received whether be frequency is the total reflection signal of the incident laser of 10KHZ, if it is, enter step 8, if it is not, then computer 1 carries out coolant leakage alarm；
Step 8: it is the incident laser of 100KHZ that computer 1 controls laser generator 3 tranmitting frequency by laser controller 2, frequency is the incident laser input that the incident laser of 100KHZ enters total reflection leakage laser detector 7 through the first optical fiber 9；
Step 9: the incident laser that frequency is 100KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector 7, and the laser of reflection is transferred to computer 1 after being gathered and convert to the signal of telecommunication by laser detector 4；
Step 10: computer 1 judges that the reflected laser signals that step 9 is received whether be frequency is the total reflection signal of the incident laser of 100KHZ, if it is, computer 1 notice does not have coolant to leak, if it is not, then computer 1 carries out coolant leakage alarm。
In the step 4 of technique scheme, step 7 and step 10, computer 1 is reported to the police each through alarm 6。
In technique scheme, respectively successively adopt frequency be 5KHZ, 10KHZ and 100KHZ incident laser carry out coolant Leak Detection, detection frequency is from low to high, it is possible not only to realize energy-saving effect, adopt above-mentioned detection logic simultaneously, carry out the repeatedly judgement of different frequency, it is ensured that the accuracy of coolant Leak Detection result。
The design principle of the present invention is: when incident laser is entered optically thinner medium (coefficient of refraction is little) by optically denser medium (namely coefficient of refraction is compared with big), when the angle of incidence is larger than a critical angle, refraction light disappears, and incident illumination is all reflected, i.e. total reflection phenomenon。The coefficient of refraction of air is approximately 1, and the coefficient of refraction of coolant is about 1.33。The refractive index of total reflection leakage laser detector 7 camera lens is 1.5～1.9。Vertical and right-angle prismatic lens head the hypotenuse of incident laser injects two right-angle sides of entrance, if right-angle side is air there will be total reflection, if right-angle side is coolant, laser is refracted on right-angle side and absorbs。Reflected signal is received, it is possible to detect that the situation of leakage occurs coolant with sensitive laser detector 4。
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field。
Claims (6)
1. the converting plant coolant leak detection system based on total reflection, it is characterized in that: it includes computer (1), laser controller (2), laser generator (3), laser detector (4), it is fixed on the ground support in converting plant (8), it is arranged on the liquid dish (5) below converter valve cooling system, it is fixed on total reflection leakage laser detector (7) that liquid dish (5) is tried to get to the heart of a matter, the laser controlling instruction output end of described computer (1) connects the signal input part of laser controller (2), the laser control signal outfan of laser controller (2) connects the laser control signal input of laser generator (3), the laser output of laser generator (3) connects the incident laser input of total reflection leakage laser detector (7) by the first optical fiber (9), the reflection laser output of total reflection leakage laser detector (7) connects the laser signal input of laser detector (4) by the second optical fiber (10), the digital electric signal outfan of laser detector (4) connects the reflection laser electric signal input end of computer (1), described laser generator (3) and laser detector (4) are installed on support (8), and laser generator (3) and laser detector (4) are respectively positioned on the surface of total reflection leakage laser detector (7)。
2. the converting plant coolant leak detection system based on total reflection according to claim 1, it is characterized in that: it also includes alarm (6), the alarm signal output ends of described computer (1) connects the signal input part of alarm (6)。
3. the converting plant coolant leak detection system based on total reflection according to claim 1, it is characterised in that: the frequency range of the laser of the laser output output of described laser generator (3) is 5KHz～100KHz。
4. the converting plant coolant leak detection system based on total reflection according to claim 1, it is characterised in that: the detecting lenses of described total reflection leakage laser detector (7) is right-angle prismatic lens head。
5. the method that the system utilized described in claim 1 carries out coolant Leak Detection, it is characterised in that it comprises the steps:
Step 1: converting plant coolant leak detection system initializes；
Step 2: it is the incident laser of 5KHZ that computer (1) controls laser generator (3) tranmitting frequency by laser controller (2), frequency is the incident laser input that the incident laser of 5KHZ enters total reflection leakage laser detector (7) through the first optical fiber (9)；
Step 3: the incident laser that frequency is 5KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector (7), and the laser of reflection is transferred to computer (1) after being gathered and convert to the signal of telecommunication by laser detector (4)；
Step 4: computer (1) judges that the reflected laser signals that step 3 is received whether be frequency is the total reflection signal of the incident laser of 5KHZ, if it is, enter step 5, if it is not, then computer (1) carries out coolant leakage alarm；
Step 5: it is the incident laser of 10KHz that computer (1) controls laser generator (3) tranmitting frequency by laser controller (2), frequency is the incident laser input that the incident laser of 10KHZ enters total reflection leakage laser detector (7) through the first optical fiber (9)；
Step 6: the incident laser that frequency is 10KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector (7), and the laser of reflection is transferred to computer (1) after being gathered and convert to the signal of telecommunication by laser detector (4)；
Step 7: computer (1) judges that the reflected laser signals that step 6 is received whether be frequency is the total reflection signal of the incident laser of 10KHZ, if it is, enter step 8, if it is not, then computer (1) carries out coolant leakage alarm；
Step 8: it is the incident laser of 100KHZ that computer (1) controls laser generator (3) tranmitting frequency by laser controller (2), frequency is the incident laser input that the incident laser of 100KHZ enters total reflection leakage laser detector (7) through the first optical fiber (9)；
Step 9: the incident laser that frequency is 100KHZ is reflected by the right-angle prismatic lens head of total reflection leakage laser detector (7), and the laser of reflection is transferred to computer (1) after being gathered and convert to the signal of telecommunication by laser detector (4)；
Step 10: computer (1) judges that the reflected laser signals that step 9 is received whether be frequency is the total reflection signal of the incident laser of 100KHZ, if, then computer (1) notice does not have coolant to leak, if it is not, then computer (1) carries out coolant leakage alarm。
6. the method for coolant Leak Detection according to claim 5, it is characterised in that: in described step 4, step 7 and step 10, computer (1) is reported to the police each through alarm (6)。
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| CN201610144844.2A CN105699016A (en) | 2016-03-14 | 2016-03-14 | Total reflection-based converting plant coolant leakage detection system and detection method |
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| CN201610144844.2A CN105699016A (en) | 2016-03-14 | 2016-03-14 | Total reflection-based converting plant coolant leakage detection system and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448367A (en) * | 2019-09-02 | 2021-03-05 | 北京国电思达科技有限公司 | Detection control device and control method for converter |
| CN113284306A (en) * | 2021-05-10 | 2021-08-20 | 王晓 | Hematology specialty sewage disinfection treatment facility weeping detection circuitry that disinfects |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275793A (en) * | 2005-03-29 | 2006-10-12 | Toshiba Corp | Leakage detecting device |
| CN101153827A (en) * | 2006-09-30 | 2008-04-02 | 中国石油化工股份有限公司 | Detecting system for tank bottom leakage optical fiber of atmospheric storage tank |
| CN102530446A (en) * | 2011-12-08 | 2012-07-04 | 飞秒光电科技(西安)有限公司 | Oil leakage detecting device for oil tank |
| CN203657979U (en) * | 2013-12-27 | 2014-06-18 | 国家电网公司 | Direct current converter station converter valve tower water leakage detection device |
| CN103884477A (en) * | 2014-04-16 | 2014-06-25 | 北京航星网讯技术股份有限公司 | Handheld type laser methane gas baffle board leakage detecting device |
| CN205483423U (en) * | 2016-03-14 | 2016-08-17 | 国家电网公司 | Converting plant coolant liquid leak testing system based on total reflection |
-
2016
- 2016-03-14 CN CN201610144844.2A patent/CN105699016A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275793A (en) * | 2005-03-29 | 2006-10-12 | Toshiba Corp | Leakage detecting device |
| CN101153827A (en) * | 2006-09-30 | 2008-04-02 | 中国石油化工股份有限公司 | Detecting system for tank bottom leakage optical fiber of atmospheric storage tank |
| CN102530446A (en) * | 2011-12-08 | 2012-07-04 | 飞秒光电科技(西安)有限公司 | Oil leakage detecting device for oil tank |
| CN203657979U (en) * | 2013-12-27 | 2014-06-18 | 国家电网公司 | Direct current converter station converter valve tower water leakage detection device |
| CN103884477A (en) * | 2014-04-16 | 2014-06-25 | 北京航星网讯技术股份有限公司 | Handheld type laser methane gas baffle board leakage detecting device |
| CN205483423U (en) * | 2016-03-14 | 2016-08-17 | 国家电网公司 | Converting plant coolant liquid leak testing system based on total reflection |
Non-Patent Citations (3)
| Title |
|---|
| 徐兰英: "《现代传感与检测技术》", 30 April 2015 * |
| 王化祥: "《自动检测技术》", 31 August 2009 * |
| 郭培源 等: "《光电检测技术与应用（第三版）》", 30 June 2015 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448367A (en) * | 2019-09-02 | 2021-03-05 | 北京国电思达科技有限公司 | Detection control device and control method for converter |
| CN113284306A (en) * | 2021-05-10 | 2021-08-20 | 王晓 | Hematology specialty sewage disinfection treatment facility weeping detection circuitry that disinfects |
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Application publication date: 20160622 |