CN1264469A - Optical detection of entrapped gas in cooling system - Google Patents
Optical detection of entrapped gas in cooling system Download PDFInfo
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- CN1264469A CN1264469A CN98807307A CN98807307A CN1264469A CN 1264469 A CN1264469 A CN 1264469A CN 98807307 A CN98807307 A CN 98807307A CN 98807307 A CN98807307 A CN 98807307A CN 1264469 A CN1264469 A CN 1264469A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 155
- 238000001816 cooling Methods 0.000 title claims abstract description 92
- 238000001514 detection method Methods 0.000 title description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 239000000523 sample Substances 0.000 claims description 77
- 239000002826 coolant Substances 0.000 claims description 50
- 239000013307 optical fiber Substances 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001427 coherent effect Effects 0.000 claims description 9
- 229910052594 sapphire Inorganic materials 0.000 claims description 5
- 239000010980 sapphire Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 43
- 238000002309 gasification Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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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
- G01M3/38—Investigating fluid-tightness of structures by using light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Examining Or Testing Airtightness (AREA)
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Abstract
An optical leak detector (200) for use with a cooling system is described. The optical leak detector includes a light source (203), a light detector (205), and a conversion device (215). The light source is optically coupled to the light detector by way of an optical path (210). The light detector generates an electronic signal in response to light received from the light source. The conversion device, which is attached to the light detector, generates an electronic signal in response to the amount of light received from the light source. This electronic signal can indicate if a leak has occurred in the cooling system by the traversal of a entrapped gas bubble across the optical path formed by the light source and the light detector.
Description
The present invention relates generally to field of cooling, more particularly, relate to the optical detection of leaking in supercharging cooling system and this system.More specifically, the present invention relates to the optical leakage detector of the supercharging cooling system use of equipment for gasification.
Gasification is the selective oxidation process, and it produces gas by the carbonaceous feed that sprays, air-flow and oxygen.Supply with material, air-flow and oxygen and spurt into the gasification cabin by supply nozzle.Be typically supply nozzle and have feed path and one, two oxygen channel, make like this and supply with material maintenance and oxygen isolation, discharge by the supply nozzle end until supplying with material.Because gasification is exothermic process, the temperature in the gasification cabin typically is by about 2000 °F (1093 ℃) to about 2700 °F (1482 ℃).
Those skilled in the art should be appreciated that the condition and the design of supply nozzle are depended in the work in gasification cabin.For example, if the supply nozzle end by scaling loss or thermal deformation, then slip and oxygen may mix in advance, thereby cause the unsatisfied work of equipment or unsafe condition of work.In order to reduce the terminal similarly damage of supply nozzle, be provided with the cooling system that connects cooling jacket or cooling ring around the supply nozzle end temperature of supply nozzle end is remained in the given allowed band.Exist in the cooling system to leak to make carbon monoxide, forming gas or other gas enter cooling system, because the pressure of reactor is much higher than the pressure of cooling system.Even can entering cooling system, the leakage that the result is very little, a large amount of gas cause the cooling of supply nozzle end improper bad with reactor performance.In addition, exist forming gas can cause the accumulation of hydrogen and CO gas in the cooling system, from and cause blast in the cooling system.Therefore, those skilled in the art should be appreciated that it is very important for safety and effective work of equipment for gasification to survey the detection system of leaking the entrap gas that causes in the cooling system.
A kind of gas detection system of general type is to utilize gas-sensing probe to survey to leak with carbon monoxide in the monitoring cooling system, the existence of gases such as air.In this system, typical cooling medium such as water or the chilled water of handling flow by the cooling medium feed path and arrive the supply nozzle end and heating, flow by the cooling medium backward channel then.The cooling medium of heat is back to heat exchanger, removes heat and cooling medium therein and turns back to the cooling medium feed path for reusing.Leakage in the system may cause entrap gas in the cooling system, if special the leakage when occurring in the supply nozzle.In gas is trapped within cooling system, the possible floating leak detection passage that enters that freely make progress of bubble, it is the backward channel tributary of a replacement.It is desirable to the gas sensor detection that gas flow is positioned at high point of leak detection passage or top.When having gas, gas sensor produces electronic signal, is sent to control system; Leak if produce in the gas flow that the exists indication cooling system, then control system gives the alarm and can take corrective action.
Under desirable condition, supply nozzle is terminal damage before, this gas detection system is with regard to the detectable leakage that goes out coolant system.Actually, the above-mentioned gas detection system is difficult to survey to leak, because be difficult to by the cooling system gas that clears all.Therefore, though be not rare be not leak in the cooling system, and gas sensor is saturated.Those skilled in the art should be understood that gas sensor, and saturated making leaked the detection of gas of holding back the very difficulty that becomes in the cooling system.
The scheme that replaces is that the pH value that can carefully monitor cooling medium changes, and this variation is because gas is held back and leakage causes.Yet, use this system also to be subjected to holding back in the cooling system restriction of conditions such as sour gas such as carbon dioxide, sulfuretted hydrogen, nitrogen oxide, sulfur oxide.Also have the restriction of an increase, that is exactly a liquid coolant, and particularly water coolant usually will be handled to reduce corrosion with alkali compounds.Those skilled in the art should be appreciated that the sour gas of holding back may react with antiseptic, therefore may not be detected in a period of time internal leakage.
Therefore, be sought after providing a kind of equipment and method to survey the interior leakage of cooling system, to overcome the shortcoming of common detection method.
The purpose of this invention is to provide the optical gas detector that the appended cooling system of a kind of cooling system, particularly equipment for gasification is used.In the embodiment of an explanation, detection system has light source, optical detector, conversion equipment and control system.Light source is connected with first optical fiber, and first optical fiber is connected to first probe with light source, and the function of first probe is effectively to transmit light.Optical detector should be connected with second optical fiber, and second optical fiber is connected to second probe with optical detector, and the function of second probe is the light that effectively receives from light source.Conversion equipment should be connected with optical detector, and the light that emission of conversion equipment response light source and optical detector receive produces regulates electronic signal.Control system receives the adjusting electronic signal from conversion equipment, and the function of control system is the indication of response electronic signal with at least one leakage in the cooling system that supercharging is provided.The detection of leaking is that the variation of the adjusting electronic signal that causes of the cut-out according to the bubble that passes through in the optical channel that forms between light source and the optical detector is carried out.In the embodiment of an explanation, at least one probe is by high-voltage probe, high-temperature probe, that SPHT probe group is chosen and preferably at least one probe pop one's head in for sapphire.In another embodiment, light source can be coherent source or incoherent source of parallel light.Optical detector can be selected in following group, i.e. photodiode, phototransistor, photomultiplier and charging-coalignment.
Describe the present invention in detail below by drawings and Examples, in the accompanying drawing:
Fig. 1 is the subelement figure according to optical gas detection system of the present invention.
Fig. 2 is the high pressure cooling system diagram of the embodiment of the invention.
Fig. 3 is the conversion equipment figure of use embodiment illustrated in fig. 2.
Fig. 4 is the low pressure cooling system figure of another embodiment of the present invention.
Fig. 1 shows the subelement according to optical gas detector 200 of the present invention.Light source 203 is arranged like this with optical detector 205, makes and forms optical channel 210 therebetween.Optical channel 210 passes across coolant channel 211.Cooling medium can be any liquid that is fit to this purpose, comprises the aqueous solution that is dissolved with corrosion inhibitor.Light source 203 can be the coherent source or the irrelevant light source (being laser or xenon pipe) of the electromagnetic radiation of any model.If use irrelevant light source, the most handy common collimator apparatus such as lens or diaphragm make its collimation.Optical detector 205 can be the ordinary optical detector (photodiode, phototransistor, photomultiplier or charge-coupled device (CCD)) of any model.Optical detector 205 produces an electronic signal that is equivalent to be received from light source 203 light quantities.The electronic signal that conversion equipment 215 will be received from optical detector 205 is converted to adjusting electronic signal (being the 4-20mA electronic signal), is sent to control system 220.
If in cooling system, occur leaking, then enter cooling system above gas under the cooling system pressure condition at gaseous tension.For example, the pressure of gas substantially exceeds cooling jacket or the interior pressure of cooling ring that is used to cool off the supply nozzle end in the gas reactor.The gas that exists in the cooling system causes in the cooling medium and the bubble in the coolant channel.Therefore the bubble of surveying in the coolant channel can be indicated existence leakage in the cooling system.For example, the present invention uses the detection of bubble in the cooling medium as the cooling jacket of supply nozzle end or the early stage indicator of cooling ring internal leakage.If detect bubble, the difference between control system comparison absorption signal and the reference signal is to have determined whether leakage.If relatively indication has leakage, then control system is sent and is had the alarm of leaking.
Fig. 2 illustrates the high pressure cooling system 300 of the embodiment of the invention.The high pressure that uses among the embodiment means that pressure about 400 is to about 1000 Psig (gauge pressure pound/in2).High-pressure system comprises passage pipe 303, power supply 305, light source 310, light source 315, detector 320, detector 325 and conversion equipment 340.
Light source/optical detector is connected on the relative interface (promptly 310 and 320), and they have formed optical channel 330 like this, and similarly, light source 315 and optical detector 325 have formed optical channel 335.Any object that crosses optical channel can make light to multi-direction scattering.Those skilled in the art is appreciated that right number and the position of interface is to make for illustration purpose among Fig. 2.
Light source among Fig. 2 and optical detector are to be connected to the passage pipe by 4 common optical fibers.Interface between passage pipe and the optical fiber should be made common connector and be used for this purpose for probe, and is not shown in the drawings.Probe can have been selected high pressure for normal blue jewel probe, high temperature, or the SPHT tolerance.The high temperature that present embodiment uses refers to be higher than the temperature of the atmospheric boiling point of water, and this value preferably is higher than about 500 °F (260 ℃).Use probe and optical fiber that light source and optical detector are placed at a distance.Yet, in the embodiment that replaces, be that light source and detector are directly connected on the passage pipe.In the embodiment of another replacement, use laser diode to comprise that as light source and use the feedback line of beam splitter and detector prevents the overtime decay of laser diode.In this arrangement, laser beam is produced by laser diode, and the separate rear part branch is used for surveying leakage, and another part reflects the detector that turns back.Signal from detector can amplify and be used for to keep the constant light intensity degree like this to the feedback system of laser diode power supply.Adopt this mode, the overtime decay of light source can reduce.Before optical detector, also can use bandpass filter to arrive detector in the present invention to prevent interference or scattered light.
Each detector (being detector 320 and detector 325) is connected with conversion equipment 340, and it receives the signal that is equivalent to survey light quantity.Fig. 3 is the enlarged drawing of conversion equipment 340.Conversion equipment receives the signal and along the line road 405 signal from detector 325 of road 400 along the line from detector 320.Conversion equipment 340 comprises amplifier 410 and 415, totalizer 420 and transducer 425.
Leakage in the cooling system causes formation bubble in the coolant channel.As if if having bubble in the passage pipe 303, they have cut off optical channel 330 or optical channel 335.(just do not have bubble in passage) when optical channel 330 blocks, most of light of being launched by light source 310 is detected device 320 receptions.If bubble cuts off optical channel 330, the light of their scattering light sources 310 emissions.Scattering makes emission light to multi-direction refraction, so the light that detector 320 receives is less, receives because only there is sub-fraction light to be detected device 320.When cutting off optical channel 335, bubble also produces similar result.
Surveying in a small amount, light causes that the electronic signal of detector 320 generations is less.Therefore, amplifying signal signal also less and that transducer produces is also less.Can compare by control system from the signal that does not block optical channel with from the difference between the optical channel signal that blocks.If greater than setting, then existing in the bubble indication cooling system, signal difference leaks.Control system response leak detection gives the alarm.
Above example is for illustration purpose provides, and those skilled in the art is appreciated that and can uses light source/optical detector to whether having leakage in the indication cooling system simultaneously.Use two optical detectors (promptly 320 and 325) that better resolving power can be provided simultaneously, the leakage slowly that can more effective detection produces less bubble.
Fig. 4 illustrates the low pressure cooling system 500 that second embodiment of the invention is used.The low pressure of using among the embodiment means that pressure is lower than about 400psig (gauge pressure pound/inch
2).Low-pressure system comprises coolant channel 505, discharge-channel 510, power supply 305, light source 310, optical detector 320, conversion equipment 500 and aiming tube 515.
The function and the high-pressure system of low-pressure system are similar.Fig. 4 illustrates portion cooling agent passage 505, and it has can make some liquid coolants discharge the discharge-channel 510 of coolant channel.Observation tube 515 is connected with discharge-channel 510.Light source 310 and optical detector 320 are placed on the opposite face of aiming tube, form optical channel 520.Part optical channel 520 is positioned at observation tube 515.Conversion equipment 500 comprises amplifier and transducer.When the electronic signal of detector 320 generations was converted device 510 receptions, electronic signal is exaggerated and is converted to regulated electronic signal (being the 4-20mA signal), and it can be received (not shown) by master control system.
Leakage in the cooling system causes generation bubble in the coolant channel.If have bubble in the coolant channel 505, then as if become the liquid that the part bubble is positioned at discharge-channel 510.Any bubble in discharge-channel 510 can and cut off optical channel 520 by aiming tube 515.As mentioned above, the cut-out of optical channel has changed the light quantity that detector 320 receives, and has changed the respective electronic signal that produces.The signal difference of the light quantity that receives when not having bubble in light quantity that control system analysis receives when being equivalent to have bubble in the optical channel and the optical channel.If signal difference surpasses setting, then control system is sent the alarm that detects leakage.
The present invention uses bubble as indicator, and the detection of bubble provides equipment for gasification with the early detection that leaks in the supercharging cooling system.As previously mentioned, minimum leakage also can make gas enter cooling system in supply nozzle cooling jacket or the ring.Final bubble in the cooling medium influences the transmission by cooling medium light greatly.Therefore, slowly and/or minimum leakage all can be detected, it has guaranteed the trouble free service of gasification system.The present invention also allows to survey all gases (being carbon monoxide and hydrogen), and they may enter the heat exchanger of coolant channel or forming gas cooling usefulness by the supply nozzle end.
Those skilled in the art should be understood that gas detection system of the present invention should not only be confined to use in the cooling system of syngas reactor.As noted, around the cooling ring, its pressure is greater than the cooling system internal pressure in any case for heat exchanger, cooling jacket etc. at gas, and gas will be trapped into cooling system.Gas is held back the efficient that has not only reduced cooling system in the cooling system, and produces other safety problems according to the difference of gas.Those skilled in the art should be appreciated that gas detection system of the present invention can be used in cooling system and be in any case lower than ambient gas pressure.
In addition, the present invention does not require a large amount of additional pipelines.In each embodiment that announces, the present invention utilizes existing pipeline.At last, parts of the present invention are common and cheap.Compare with the common cooling system that is equipped with gas monitor equipment, the expense that is equipped with light source and optical detector can reduce the cost of equipment of cooling system above 5%.
According to above published content, those skilled in the art should be appreciated that the optical leakage detector that explanation embodiment of the present invention uses for supercharging cooling system, its cooling system comprise that at least one is for cooling medium flowing coolant passage.Detector comprises light source, optical detector, conversion equipment and control system.Light source should be connected with first optical fiber, and the latter is connected to first probe with light source, and the function of first probe is a transmission light.Preferably light source is a coherent source, laser for example, but also can use incoherent light source, form light beam by collimating apparatus.Optical detector should be connected with second optical fiber, and second optical fiber is connected to second probe with optical detector, and the latter's function is the light that receives from light source.Preferably pop one's head in by high-voltage probe, high-temperature probe and SPHT probe group are chosen, and wish that more probe is for the sapphire probe, so that the high pressure of anti-cooling medium and high temperature and other performances.Optical detector can be by photodiode, phototransistor, and photomultiplier, charge-coupled device (CCD) is chosen for one group.Conversion equipment should be connected with optical detector.Conversion equipment response light source emission and produced the electronic signal of regulating by the light that optical detector receives.The adjusting electronic signal changes according to the cut-out of bubble in the optical channel that forms between light source and the optical detector.In most preferred embodiment, conversion equipment comprises the amplifier that is connected with first optical detector, and the function of amplifier is the electronic signal of amplifying from optical detector.Conversion equipment also comprises the transducer that is connected with amplifier, and the function of transducer is to receive the adjusting electronic signal of using from the electronic signal and the generation control system of amplifier.Adjusting electronic signal Be Controlled system from conversion equipment receives, and the function of control system is that the response electronic signal is to provide the indication of cooling system internal leakage.
Another explanation embodiment of the present invention is the optical leakage detector that low pressure cooling system uses, and low pressure cooling system comprises that at least one is for cooling medium flowing coolant passage.The optical leakage detector comprises light source, optical detector, delivery pipe, conversion equipment and control system.Light source should be connected with first optical fiber, and the latter is connected to first probe with light source, and the function of first probe is a transmission light.Preferably light source is a coherent source, but also can use incoherent light source, passes through collimating device collimation.Optical detector should be connected with second optical fiber, and second optical fiber is connected to second probe with optical detector.The function of second probe is to receive from the light of light source and transfer to optical detector.Best, optical detector is by photodiode, phototransistor, and photomultiplier, the charge-coupled device (CCD) group is chosen.Delivery pipe is connected with the cooling duct, and its function is any bubble that receives cooling medium and held back by the cooling duct.In addition, the troubleshooting pipe should and cut off at least a portion that forms optical channel between two probes between first and second probes.Best, delivery pipe is the high pressure observation tube.Conversion equipment should be connected to optical detector, conversion equipment response light source emission and produced the electronic signal of regulating by the light that optical detector receives.Preferably conversion equipment comprises the amplifier that is connected with first optical detector, the function of amplifier is the electronic signal of amplifying from optical detector, and the transducer that is connected with amplifier, the function of transducer is to receive the adjusting electronic signal of using from the electronic signal and the generation control system of amplifier.Because the adjusting electronic signal changes according to the cut-out of cooling medium bubble in the optical channel that forms between light source and the optic probe, air of holding back or gas can be detected.Regulate the indication that device that electronic signal is transferred into this adjusting electronic signal of response leaks from low pressure cooling system is provided.Control system triggers alarm and takes required corrective action automatic and programming subsequently.
The system that the optical leakage detector, particularly equipment for gasification that another explanation embodiment of the present invention uses for the high pressure cooling system uses.Cooling system should comprise at least one cooling duct for ANALYSIS OF COOLANT FLOW.Yet also can have a plurality of passages.The optical leakage detector of present embodiment comprises: first light source, first optical detector, secondary light source, second optical detector, cooling duct pipe, conversion equipment and control system.First light source should be connected with first optical fiber, first optical fiber is connected to first probe with first light source, the function of first probe is transmission light, first optical detector should be connected with second optical fiber, second optical fiber is connected to second probe with first optical detector, and the function of second probe is the light that receives from first light source.First light source is connected with first optical detector by means of the optical channel that forms in the cooling duct.Secondary light source should be connected with the 3rd optical fiber, and the 3rd optical fiber is connected to the 3rd probe with secondary light source, and is similar to first probe, and its function is a transmission light.Second optical detector should be connected with the 4th optical fiber, and the 4th optical fiber is connected to the 4th probe with second optical detector.Similar to second probe, the function of the 4th probe is the light that receives from secondary light source.Secondary light source is connected with second optical detector by means of second optical channel that forms in the cooling duct.Second optical channel can be parallel, perpendicular to above-mentioned first optical channel or be in Different Plane.Light source can be coherent source such as laser or irrelevant light source, is light beam through collimating device collimation.As previously mentioned, the passage pipe defines the cooling duct, but it also is used to make light source to aim at optic probe.Therefore the passage pipe has 4 hickeys, and hickey is connected with probe, by the above-mentioned alignment probe that makes.Probe can be by high-voltage probe, and high-temperature probe and SPHT probe group are chosen, but is preferably sapphire probe, high pressure and high temperature that it can anti-experience.Conversion equipment should be connected with first and second optical detectors.The effect of conversion equipment is the light that receives with optical detector of response light source emission and produce the adjusting electronic signal.Regulating electronic signal changes according to the cut-out of cooling medium bubble in that forms between light source and the optic probe or two optical channels.Best conversion equipment has at least two amplifiers and is connected with first and second optical detectors.The function of amplifier is the electronic signal of amplifying from first and second optical detectors.Optical detector is preferably by photodiode, phototransistor, and photomultiplier and charge-coupled device (CCD) group are chosen.Conversion equipment also has totalizer, and to be response from the electronic signal of first optical detector with from the choosing of the electronic signal of second optical detector add its function produces comprehensive electronic signal.Conversion equipment also has transducer and is connected with totalizer in addition, and the function of transducer is to receive from the integrated electronics signal of totalizer and produce the adjusting electronic signal that control system is used.Control system receives from the adjusting electronic signal of conversion equipment and responds electronic signal so that the indication that leak at least one place in the high pressure cooling system to be provided.Response mode can be to trigger alarm and take required automatic predetermined action.
In addition, those skilled in the art should be understood the optical detection method that the present invention also comprises the cooling system internal leakage, and this method comprises: by source emissioning light; Detection is by the light of light emitted; Echo probe light produces regulates electronic signal; And the analytical electron signal is to determine whether there is leakage in the cooling system.Because the adjusting electronic signal changes according to the cut-out of cooling medium bubble in the optical channel that forms between light source and the optical detector, the systematic analysis of electronic signal Be Controlled, if desired, control system generation alarm, the leakage in the indication cooling system.In the practice of this method, light source is coherent source or the irrelevant light source through collimating.The optical detector that this method is used can be photodiode, phototransistor, photomultiplier or charge-coupled device (CCD).
Those skilled in the art is appreciated that and is not breaking away under the above-mentioned range of condition of the present invention that above-mentioned explanation can have many improvement.Therefore, below listed claims, and be not the right that will protect that above-mentioned explanation defines exclusiveness.
Claims (17)
1. cooling system optics leak detector that comprises at least one for cooling medium flowing coolant passage, this detector has:
Light source, light source is connected with first optical fiber, and first optical fiber is connected to first probe with light source, and the function of first probe is a transmission light;
Optical detector, optical detector is connected with second optical fiber, and second optical fiber is connected to second probe with optical detector, and the function of second probe is the light that receives from light source;
Conversion equipment, conversion equipment is connected with optical detector, the light that receives with optical detector of conversion equipment response light source emission and produces the adjusting electronic signal changes according to the cut-out of cooling medium bubble in the optical channel that forms between light source and the optical detector and regulate electronic signal; And
Control system is used to receive the adjusting electronic signal from converting system, and the function of control system is that the response electronic signal is to provide the indication that leak at least one place in the supercharging cooling system.
2. according to the described optical leakage detector of claim 1, it is characterized in that at least one probe is by high-voltage probe, high-temperature probe, SPHT are popped one's head in and are chosen in one group.
3. according to the described optical leakage detector of claim 1, it is characterized in that at least one probe is the sapphire probe.
4. according to the described optical leakage detector of claim 1, it is characterized in that light source is a coherent source.
5. according to the described optical leakage detector of claim 1, it is characterized in that optical detector is by choosing in photodiode, phototransistor, photomultiplier and the charge-coupled device (CCD) group.
6. according to the described optical leakage detector of claim 1, it is characterized in that conversion equipment has:
With the amplifier that first optical detector is connected, its function is for amplifying the electronic signal from optical detector; And
The transducer that is connected with amplifier, its function is for receiving the adjusting electronic signal of using from the electronic signal and the generation control system of amplifier.
7. optical leakage detector that low pressure cooling system is used, low pressure cooling system have at least one for cooling medium flowing coolant passage, and the optical leakage detector has:
Light source, light source is connected with first optical fiber, and first optical fiber is connected to first probe with light source, and the function of first probe is a transmission light;
Optical detector, optical detector is connected with second optical fiber, and second optical fiber is connected to second probe with optical detector, and the function of second probe is the light that receives from light source;
Delivery pipe, delivery pipe is connected with the cooling duct, and its function is cooling medium and any bubble of holding back that receives from coolant channel, and delivery pipe is between first and second probes;
Conversion equipment, conversion equipment is connected with optical detector, light conversion equipment response light source emission and that optical detector receives produces regulates electronic signal, changes according to the cut-out of cooling medium bubble in the optical channel that forms between light source and the optical detector and regulate electronic signal; And
Control system is used to receive the adjusting electronic signal from conversion equipment, and the function of control system is that the response electronic signal is to provide the indication that leak at least one place in the low pressure cooling system.
8. according to the described optical leakage detector of claim 7, it is characterized in that delivery pipe is the high pressure observation tube.
9. according to the described optical leakage detector of claim 7, it is characterized in that light source is a coherent source.
10. according to the described optical leakage detector of claim 7, it is characterized in that optical detector is to be chosen by photodiode, phototransistor, photomultiplier and charge-coupled device (CCD) group.
11., it is characterized in that conversion equipment has according to the described optical leakage detector of claim 7:
With the amplifier that first optical detector is connected, the function of amplifier is the electronic signal of amplifying from optical detector; And
The transducer that is connected with amplifier, the function of transducer are to receive the adjusting electronic signal of using from the electronic signal and the generation control system of amplifier.
12. the optical leakage detector that the high pressure cooling system is used, cooling system have at least one for cooling medium flowing coolant passage, the optical leakage detector has:
First light source, first light source is connected with first optical fiber, and first optical fiber is connected to first probe with first light source, and the function of first probe is a transmission light;
First optical detector, first optical detector is connected with second optical fiber, and second optical fiber is connected to second probe with first optical detector, and the function of second probe is the light that receives from first light source;
Secondary light source, secondary light source is connected with the 3rd optical fiber, and the 3rd optical fiber is connected to the 3rd probe with secondary light source, and the function of the 3rd probe is a transmission light;
Second optical detector, second optical detector is connected with the 4th optical fiber, and the 4th optical fiber is connected to the 4th probe with second optical detector, and the function of the 4th probe is the light that receives from secondary light source;
The passage pipe, the passage pipe limits coolant channel, and the passage pipe has 4 hickeys, and hickey is connected with probe;
Conversion equipment, conversion equipment is connected with first and second optical detectors, light conversion equipment response light source emission and that detector receives produces regulates electronic signal, changes according to the cut-out of cooling medium bubble in the optical channel that forms between light source and the optical detector and regulate electronic signal; And
Control system is used to receive the adjusting electronic signal from conversion equipment, and the function of control system is that the response electronic signal is to provide the indication that leak at least one place in the high pressure cooling system.
13., it is characterized in that conversion equipment has according to the described optical leakage detector of claim 12:
Two amplifiers that are connected with first and second optical detectors, the function of amplifier are the electronic signals of amplifying from first and second optical detectors;
Totalizer, its function be response from the electronic signal of first optical detector and from the superposition of the electronic signal of second optical detector to produce comprehensive electronic signal; And
The transducer that is connected with totalizer, the function of transducer are to receive the adjusting electronic signal of using from the integrated electronics signal and the generation control system of totalizer.
14., it is characterized in that light source is a coherent source according to the described optical leakage detector of claim 12.
15., it is characterized in that optical detector chosen by photodiode, phototransistor, photomultiplier and charge-coupled device (CCD) group according to the described optical leakage detector of claim 12.
16., it is characterized in that at least one probe is popped one's head in by high-voltage probe, high-temperature probe and SPHT to choose in one group according to the described optical leakage detector of claim 12.
17., it is characterized in that at least one probe is the sapphire probe according to the described optical leakage detector of claim 16.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4879997P | 1997-06-06 | 1997-06-06 | |
| US60/048,799 | 1997-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1264469A true CN1264469A (en) | 2000-08-23 |
Family
ID=21956507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98807307A Pending CN1264469A (en) | 1997-06-06 | 1998-06-05 | Optical detection of entrapped gas in cooling system |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0990132A4 (en) |
| JP (1) | JP2002505003A (en) |
| KR (1) | KR20010013495A (en) |
| CN (1) | CN1264469A (en) |
| AU (1) | AU741819B2 (en) |
| CA (1) | CA2292561A1 (en) |
| PL (1) | PL337214A1 (en) |
| WO (1) | WO1998055849A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128771A (en) * | 2010-12-20 | 2011-07-20 | 中国石油大学(北京) | High-temperature aerosol detection guide tube |
| CN102141499A (en) * | 2010-12-20 | 2011-08-03 | 中国石油大学(北京) | High-pressure aerosol detection conduit |
| CN102539091A (en) * | 2011-12-21 | 2012-07-04 | 合肥工业大学 | Filter bag breakage detector for bag type dust remover |
| CN105424331A (en) * | 2014-09-18 | 2016-03-23 | 中国石油化工股份有限公司 | Device and method for mechanical sealing evaluation of cement ring when large fracturing is performed |
| CN106197896A (en) * | 2016-08-10 | 2016-12-07 | 怡维怡橡胶研究院有限公司 | A kind of tube or inner liner air tightness detecting apparatus and determination of gas tightness method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2847670B1 (en) * | 2002-11-26 | 2005-06-10 | Sc2N Sa | OPTICAL DETECTOR FOR THE PRESENCE OF GAS BUBBLES IN A LIQUID |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935876A (en) * | 1974-11-15 | 1976-02-03 | Renal Systems, Inc. | Air leak detector |
| JPS56112626A (en) * | 1980-02-11 | 1981-09-05 | Toshiba Corp | Detecting device for leakage of fluid in nuclear power plant |
| JPS5755769A (en) * | 1980-09-18 | 1982-04-02 | Toshiba Corp | Detector for leakage of water from water-cooled type thyristor valve |
| JPS5875041A (en) * | 1981-10-30 | 1983-05-06 | Showa Electric Wire & Cable Co Ltd | Detection for leakage of water |
| US5263361A (en) * | 1988-08-22 | 1993-11-23 | Gates Donald C | Apparatus for leak testing a fluid containing chamber utilizing a laser beam |
| JPH0311955A (en) * | 1989-06-06 | 1991-01-21 | Toshiba Corp | Cooling device |
| US5241368A (en) * | 1991-01-07 | 1993-08-31 | Custom Sample Systems, Inc. | Fiber-optic probe for absorbance and turbidity measurement |
| JPH0989422A (en) * | 1995-09-21 | 1997-04-04 | Hitachi Bill Shisetsu Eng Kk | Method and apparatus for monitoring leakage of liquid enclosed in sealed circulating system |
| JPH1048064A (en) * | 1996-08-08 | 1998-02-20 | Mitsubishi Electric Corp | Temperature sensor of water cooling electrical equipment |
-
1998
- 1998-06-05 WO PCT/US1998/011793 patent/WO1998055849A1/en not_active Application Discontinuation
- 1998-06-05 AU AU80612/98A patent/AU741819B2/en not_active Ceased
- 1998-06-05 PL PL98337214A patent/PL337214A1/en unknown
- 1998-06-05 CA CA002292561A patent/CA2292561A1/en not_active Abandoned
- 1998-06-05 EP EP98928926A patent/EP0990132A4/en not_active Withdrawn
- 1998-06-05 KR KR1019997011501A patent/KR20010013495A/en not_active IP Right Cessation
- 1998-06-05 JP JP50301799A patent/JP2002505003A/en active Pending
- 1998-06-05 CN CN98807307A patent/CN1264469A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128771A (en) * | 2010-12-20 | 2011-07-20 | 中国石油大学(北京) | High-temperature aerosol detection guide tube |
| CN102141499A (en) * | 2010-12-20 | 2011-08-03 | 中国石油大学(北京) | High-pressure aerosol detection conduit |
| CN102539091A (en) * | 2011-12-21 | 2012-07-04 | 合肥工业大学 | Filter bag breakage detector for bag type dust remover |
| CN105424331A (en) * | 2014-09-18 | 2016-03-23 | 中国石油化工股份有限公司 | Device and method for mechanical sealing evaluation of cement ring when large fracturing is performed |
| CN105424331B (en) * | 2014-09-18 | 2019-07-05 | 中国石油化工股份有限公司 | The device and method of the mechanical seal evaluation of cement sheath when for massive hydraulic fracturing |
| CN106197896A (en) * | 2016-08-10 | 2016-12-07 | 怡维怡橡胶研究院有限公司 | A kind of tube or inner liner air tightness detecting apparatus and determination of gas tightness method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0990132A4 (en) | 2000-07-26 |
| PL337214A1 (en) | 2000-08-14 |
| KR20010013495A (en) | 2001-02-26 |
| AU741819B2 (en) | 2001-12-13 |
| JP2002505003A (en) | 2002-02-12 |
| EP0990132A1 (en) | 2000-04-05 |
| AU8061298A (en) | 1998-12-21 |
| WO1998055849A1 (en) | 1998-12-10 |
| CA2292561A1 (en) | 1998-12-10 |
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