CN105509968A - Fuel tank leakage early-warning device and fuel tank leakage early-warning method of gas-liquid heat pipe exchanger - Google Patents
Fuel tank leakage early-warning device and fuel tank leakage early-warning method of gas-liquid heat pipe exchanger Download PDFInfo
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- CN105509968A CN105509968A CN201511001134.6A CN201511001134A CN105509968A CN 105509968 A CN105509968 A CN 105509968A CN 201511001134 A CN201511001134 A CN 201511001134A CN 105509968 A CN105509968 A CN 105509968A
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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 fuel tank leakage early-warning device of a gas-liquid heat pipe exchanger. The fuel tank leakage early-warning device comprises the components of transverse recessed troughs, a longitudinal recessed trough, a fuel storage trough, a micro-weight optical fiber sensor, a signal processing system and an alarm. A fuel tank and an air tank are vertically configured in a manner that a certain distance is kept between the fuel tank and the air tank. Each row of heat pipes corresponds with one transverse recessed trough. Each transverse recessed trough is arranged on the top wall of the air tank in a manner than the corresponding row of heat pipes penetrates the central axis of the transverse recessed trough. The transverse recessed troughs are configured in a same inclination in a manner that the heights of the transverse recessed troughs gradually increase from the right to left. The longitudinal recessed trough is fixed to the right wall surface of the air tank in a manner of totally below the right outlets of the transverse recessed troughs. The longitudinal recessed trough is configured in a manner that the outlet of the longitudinal recessed trough is relatively low. The fuel storage trough is fixed to the right wall surface of the air tank in a manner of right below the outlet of the longitudinal recessed trough. The fuel tank leakage early-warning device of the gas-liquid heat pipe exchanger can accurately monitor a micro fuel leakage condition at welding portions of the base plate of the oil tank in real time, and furthermore has advantages of high precision and high response speed.
Description
Technical field
The invention belongs to gas-liquid heat tube heat exchanger technical field, relate to a kind of prior-warning device for the leakage of oil of gas-liquid heat tube heat exchanger fuel tank and method.
Background technology
Usually need to adopt heat exchange equipment to carry out heating in commercial production, cool or the technological process such as constant temperature.Conventional heat interchanger kind has tubular type, shell-and-tube, board-like etc.Hot tube heat exchanger is the one of tubular heat exchanger, starts to occur and application along with the development of heat pipe, belongs to a kind of novel heat interchanger.In industrial scale applications, heat pipe is not often occur with the form of single element, but is got up to apply by tens, even up to a hundred heat pipe combination, and this version is exactly hot tube heat exchanger.Therefore hot tube heat exchanger has all advantages of heat pipe, compares other heat interchanger, it has, and heat transfer capacity is large, security is high, save power and material, the simple cost of maintenance is low, flexible arrangement convenience, environmental protection etc.Current hot tube heat exchanger has had in the heat recovery of six large power consumption industries, electric equipment heat radiation, sun power and exploitation and utilization of geotherm resources etc. to be applied comparatively widely.
Hot tube heat exchanger can be divided into gas-gas, solution-air, gas-vapour and liquid-liquid hot tube heat exchanger etc. according to the environment that heat pipe two ends work.In gas-liquid heat tube heat exchanger, one section of heat pipe is in the high-temperature gas bellows of flowing, and another section of heat pipe is in the fluid box of flowing, and the heat in high-temperature gas passes in liquid by hot tube heat exchanger, realizes the heating of liquid.In order to improve the heat exchange efficiency of heat pipe, gas side and hydraulic fluid side sealing separate, and the normal mode of welding that adopts realizes sealing completely.The actuating medium that liquid adopts has water or heat conduction wet goods, and current industrial water is the most frequently used.When the hydraulic fluid side of gas-liquid heat tube heat exchanger is conduction oil, the welded seal of oil tank bottom plate and heating pipe bank bundle seems particularly important, once deep fat meets extraneous spark or high-temperature gas after revealing, burning will be caused, thus causing burning or the blast of whole fuel tank, consequence is hardly imaginable.Therefore, a kind of fuel tank leakage of oil prior-warning device being adapted to hot tube heat exchanger structure of active demand is to reduce the security risk of this type of accident.
Leakage of oil prior-warning device and the method for hot tube heat exchanger fuel tank is not effectively realized in currently available technology.Patent of invention (application number 201410057177.5) discloses a kind of tank wagon leakage of oil prior-warning device based on optical fiber FBG sensor, flexible pipe is inserted liquid internal, the internal face of liquid level outer flexible tube and liquid level inner flexible tube has Fibre Optical Sensor, and the level change caused when leakage of oil can cause the drift of fiber optic wavelength thus start warning.But this patent cannot be adapted to the leakage of oil early warning of hot tube heat exchanger fuel tank: 1) heat interchanger fuel tank has import and the outlet of conduction oil, oil is flowing, and liquid level can fluctuate always, and method disclosed in obvious patent is not suitable with; 2) heat interchanger fuel tank is that band pressure runs, and from fuel tank, an extraction pipe or other sensor signal lines are to the external world, and all need to carry out seal welding, this can increase a leakage of oil point.Utility model patent (application number 201320505387.7) discloses a kind of warning device relating to diesel oil tank leakage of oil, at a fuel tank outside design large casing, fuel tank is included in the inside by casing, by collecting the fuel oil revealed, judging liquid level in casing with floating ball sensor and realizing early warning.This patent has the following disadvantages: 1) whole warning device is too huge and heavy, must be greater than fuel tank, and this is not attainable for heat interchanger; 2) method of liquid level sensor is not suitable for micro-oil leakage alarm, and precision is inadequate.Utility model patent (application number 201220044594.2) discloses a kind of oiling equipment oil leakage warning device, oleophylic plastic strip is infected with by grease or can be caused the change of mechanical property after submergence, can rupture under the effect of recoil of spring power, spring reset is connected circuit thus is realized early warning.The ultimate principle applicability of this patent is strong, and precision is higher, but has the following disadvantages: 1) be applicable to the mechanical oil leakage alarm that leak source is few; 2) this patent does not have the system, coupled figure of disclosed device and oiling equipment, and practicality has much room for improvement.
Summary of the invention
The object of the invention is to propose a kind of apparatus and method for fuel tank leakage of oil early warning in gas-liquid heat tube heat exchanger, the labyrinth feature of welded seal is restrained for hot tube heat exchanger oil tank bottom plate and many heat exhausting pipes, a kind of effective micro-leakage of oil early warning system is completely newly provided, micro-leakage of oil situation of oil tank bottom plate weld can be monitored real-time accurate, effectively avoid the fire that may occur or risk of explosion, and system structure of device is simple, small volume, be easy to install and with low cost.
Technical scheme of the present invention is as follows:
In order to realize foregoing invention object, the present invention discloses a kind of device for fuel tank leakage of oil early warning in gas-liquid heat tube heat exchanger, gas-liquid heat tube heat exchanger is equipped with the airtight heat pipe that can carry out solution-air conversion according to temperature by many rows and realizes heat interchange through high temperature bellows below and fuel tank above, thus by the gasification of airtight heating tube medium and condensation, the oil in fuel tank is above heated, prior-warning device comprises horizontal Baltimore groove, longitudinal concave groove, oil storage tank, micro weight Fibre Optical Sensor, signal processing system and alarm, described fuel tank and described bellows configure up and down according to the mode of spacing certain intervals, the corresponding described horizontal Baltimore groove of each heat exhausting pipe, the mode that horizontal Baltimore groove described in every bar passes its medium line according to a heat exhausting pipe of its correspondence is arranged on the roof of described bellows, described horizontal Baltimore groove all configures in the mode of same slope according to right low left high, described longitudinal concave groove is fixed on the right side wall of bellows in the mode immediately below the outlet being positioned at whole described horizontal Baltimore groove, and described longitudinal concave groove configures according to the mode that exit is lower slightly, described oil storage tank is fixed on the right side wall of bellows in the mode immediately below the right-side outlet being positioned at longitudinal concave groove, described micro weight Fibre Optical Sensor stretches into the base plate of oil storage tank and seals, micro weight Fibre Optical Sensor and alarm couple together by described signal processing system.
The upper surface of preferred described horizontal Baltimore groove and longitudinal concave groove is smooth meniscus, and meniscus intermediate point is minimum, and surfacing is non-lipophilic material, and oil droplet flows above and do not adhere to.
The making of preferred described horizontal Baltimore groove is taked colloidal liquid to fill sclerosis to add surface and mould shaping mode and realize, and material must fire-proof high-temperature resistant.
Preferred described longitudinal concave groove takes the mode of plastics or metal forming to make, and material must fire-proof high-temperature resistant.
Preferred described micro weight Fibre Optical Sensor comprises shell, reaction diaphragm, precision spring, displacement sheet, optical-fiber laser penetrate source device and signal wire, and described signal wire is drawn and is connected with described signal processing system.
The material of the reaction diaphragm of preferred micro weight Fibre Optical Sensor is the material that lipophilicity is good.
Preferred described alarm comprises LED flashing lamp and loudspeaker.
The present invention discloses a kind of fuel tank leakage of oil method for early warning of gas-liquid heat tube heat exchanger, comprise: step one, in the micro-leakage of oil of the weld of fuel tank 1 base plate and heat pipe 3, along heat pipe outer wall surface current in horizontal Baltimore groove, can collect under tilt condition and flow in longitudinal concave groove; Step 2, oil along inclined direction flows into downwards in oil storage tank from longitudinal concave groove; Step 3, flow into oil storage tank oil can absorb by the reaction diaphragm of the micro weight Fibre Optical Sensor bottom oil groove, the weight of reaction diaphragm can strengthen and compress precision spring; Step 4, precision spring by force transmission to displacement sheet, can cause the movement in downward direction of displacement sheet; Step 5, optical-fiber laser is penetrated the laser beam that source device launches and is played resilience after displacement sheet, meets bottom wall afterwards and again rebounds, so repeatedly after 10 times by optical-fiber laser penetrate source device receive; Step 6, optical-fiber laser is penetrated source device and is exported total distance L that ray 10 resiliences pass by signal processing system; Step 7, setting reaction diaphragm does not absorb oil and displacement sheet when not moving, and total distance that ray 10 resiliences are passed by is L0, and the distance reduction threshold values of setting startup alarm is Δ L; Step 8, signal processing system carries out data processing and judgement, as (L0-L) >=Δ L, signal processing system output alarm signal is to alarm, the loudspeaker of fuel tank side sends alerting signal, and LED continues flicker ruddiness, and synchronous signal disposal system exports shutdown signal, close the valve of fuel tank oiler, cut off fuel feeding.
Beneficial effect of the present invention:
1) this device and method can micro-leakage of oil situation at multiple positions of Real-Time Monitoring gas-liquid heat tube heat exchanger tank bottoms and heat pipe weld, and adopt the monitoring scheme of micro weight Fibre Optical Sensor to have the advantage that precision is high and response is fast, meet the demand that whole day 24 hours is automatically-monitored.
2) this device innovatively devises the scheme that horizontal Baltimore groove and longitudinal concave groove combine, and solves and gathers arrangement because many heat exhausting pipes intersect and effectively cannot collect the difficult problem of leakage of oil.
3) whole apparatus structure is very simple, and the piece volumes of employing is less, arranges that institute takes up space less, flexibly and easily.With timer without the need to inserting pipeline in fuel tank, without the need to monitoring pressure, avoid the extra possibility increasing potential safety hazard.
4) mode that horizontal Baltimore groove of the present invention takes colloidal liquid to pour into a mould hardened forming realizes, and therefore whole device is extremely easy to realize in engineering, and device feasibility is high, is easy to apply.
Accompanying drawing explanation
Fig. 1 is a kind of fundamental diagram of fuel tank leakage of oil prior-warning device of gas-liquid heat tube heat exchanger;
Fig. 2 is the primary structure figure of micro weight Fibre Optical Sensor.
Wherein: 1, fuel tank; 2, bellows; 3, heat pipe; 4, horizontal Baltimore groove; 5, longitudinal concave groove; 6, oil storage tank; 7, micro weight Fibre Optical Sensor; 8, signal processing system; 9, alarm; 10, shell; 11, reaction diaphragm; 12, precision spring; 13, displacement sheet; 14, optical-fiber laser penetrates source device; 15, signal wire.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
As shown in Figure 1, for the device of fuel tank leakage of oil early warning in gas-liquid heat tube heat exchanger, comprise horizontal Baltimore groove 4, longitudinal concave groove 5, oil storage tank 6, micro weight Fibre Optical Sensor 7, signal processing system 8, alarm 9, wherein micro weight Fibre Optical Sensor comprises shell 10, reaction diaphragm 11, precision spring 12, displacement sheet 13, optical-fiber laser penetrate source device 14 and signal wire 15 etc.
As Fig. 1, fuel tank 1 is fixed on the top board of bellows 2 by supporting construction, and there is the height space of about 200mm between fuel tank 1 and bellows 2.The effect in space is the welding of convenient heat pipe 3 and fuel tank 1 base plate, and the attended operation of heat pipe 3 and bellows 2.The horizontal Baltimore groove 4 of prior-warning device of the present invention can be arranged in this height space.Horizontal Baltimore groove 4 is positioned on the top board of bellows 2, the corresponding horizontal Baltimore groove 4 of each heat exhausting pipe 3.Described longitudinal concave groove 5 is fixed on the right side wall of bellows 2, arranges with the orientation perpendicular to horizontal Baltimore groove 4, and its height is a little less than horizontal Baltimore groove 4.Oil storage tank 6 is positioned at immediately below the outlet of longitudinal concave groove 5, and is fixed on the right side wall of bellows 2; Described micro weight Fibre Optical Sensor 7 stretches into the base plate of oil storage tank 6 and seals; Micro weight Fibre Optical Sensor 7 and alarm 9 couple together by described signal processing system 8.
Further, the upper surface of described horizontal Baltimore groove 4 and longitudinal concave groove 5 is smooth meniscus, and meniscus intermediate point is minimum, and meniscus surfacing is non-lipophilic material, and oil droplet flows above and can not adhere to.The meniscus medium line of the horizontal Baltimore groove 4 of every bar and the center line of a corresponding heat exhausting pipe 3 are in same plane.There is certain angle of inclination in whole horizontal Baltimore groove 4, the tall and big groove in the right of groove on the left side is high, and oil droplet will flow to the right along this angle of inclination from the left side of groove after surface is formed, and finally flows in longitudinal concave groove 5.Longitudinal concave groove 5 is positioned at immediately below the outlet of all horizontal Baltimore grooves 4.The making of horizontal Baltimore groove 4 is recommended to take following way: after the connection of heat pipe 3 and fuel tank 1 and bellows 2 has sealed, castable refractory is filled into the form of colloidal liquid on the top board of bellows 2, material feeding to be poured is carried out extruding with mould on its surface after substantially hardening and is moulded shaping, form convex meniscus shape, thoroughly namely sclerosis defines horizontal Baltimore groove 4 afterwards, and at the non-oleophylic film of its surface adhesion last layer.
There is certain angle of inclination in longitudinal concave groove 5, groove below tall and big high in groove above equally, and the oil droplet flowed into from the horizontal Baltimore groove of difference can successfully flow to oil storage tank 6.Longitudinal concave groove 5 takes the mode processing and fabricating of plastics or metal forming, and material must fire-proof high-temperature resistant.The material of the reaction diaphragm 11 of micro weight Fibre Optical Sensor 7 must be the material that lipophilicity is good, can adsorbed oil and wetting weightening finish.Alarm 9 comprises LED flashing lamp and loudspeaker.
By reference to the accompanying drawings 1 and Fig. 2, the method for fuel tank leakage of oil early warning in gas-liquid heat tube heat exchanger of the present invention is described, specific as follows:
1) when the weld of fuel tank 1 base plate and heat pipe 3 exists micro-leakage of oil, oil droplet along heat pipe outer wall surface current in horizontal Baltimore groove, can collect and flows in longitudinal concave groove under tilt condition.
2) oil droplet flowed into from multiple horizontal Baltimore groove, can along inclined direction continue to flow into downwards in oil storage tank in longitudinal concave groove.
3) flow into oil storage tank oil can absorb by the reaction diaphragm of the micro weight Fibre Optical Sensor bottom oil groove, the weight of reaction diaphragm can strengthen and compress precision spring.
4) precision spring by force transmission to displacement sheet, can cause the movement in downward direction of displacement sheet, as shown in Figure 2.
5) optical-fiber laser is penetrated the laser beam that source device launches and is played resilience after displacement sheet, meets bottom wall afterwards and again rebounds, see Fig. 2, so repeatedly after 10 times by optical-fiber laser penetrate source device receive.
6) optical-fiber laser is penetrated source device and is exported total distance L that ray 10 resiliences pass by signal processing system.
7) set reaction diaphragm and do not absorb oil and displacement sheet when not moving, total distance that ray 10 resiliences are passed by is L0, and the distance reduction threshold values of setting startup alarm is Δ L.
8) signal processing system carries out data processing and judgement, as (L0-L) >=Δ L, signal processing system output alarm signal is to alarm, the loudspeaker of fuel tank side sends alerting signal, LED continues flicker ruddiness, synchronous signal disposal system exports shutdown signal, closes the valve of fuel tank oiler, cuts off fuel feeding.
It should be noted last that, above content is only to the specific embodiment of the present invention example and explanation, and and unrestricted.According to conception of the present invention above-mentioned embodiment modified or supplement or adopt similar mode to substitute, its function produced do not exceed that instructions and accompanying drawing contain yet spiritual time, all should in protection scope of the present invention.
Claims (8)
1. the fuel tank leakage of oil prior-warning device of a gas-liquid heat tube heat exchanger, gas-liquid heat tube heat exchanger is equipped with the airtight heat pipe that can carry out solution-air conversion according to temperature by many rows and realizes heat interchange through high temperature bellows below and fuel tank above, thus by the gasification of airtight heating tube medium and condensation, the oil in fuel tank is above heated, it is characterized in that: comprise horizontal Baltimore groove, longitudinal concave groove, oil storage tank, micro weight Fibre Optical Sensor, signal processing system and alarm, described fuel tank and described bellows configure up and down according to the mode of spacing certain intervals, the corresponding described horizontal Baltimore groove of each heat exhausting pipe, the mode that horizontal Baltimore groove described in every bar passes its medium line according to a heat exhausting pipe of its correspondence is arranged on the roof of described bellows, described horizontal Baltimore groove all configures in the mode of same slope according to right low left high, described longitudinal concave groove is fixed on the right side wall of bellows in the mode immediately below the right-side outlet being positioned at whole described horizontal Baltimore groove, and described longitudinal concave groove configures according to the mode that exit is lower slightly, described oil storage tank is fixed on the right side wall of bellows in the mode immediately below the outlet being positioned at longitudinal concave groove, described micro weight Fibre Optical Sensor stretches into the base plate of oil storage tank and seals, micro weight Fibre Optical Sensor and alarm couple together by described signal processing system.
2. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1, it is characterized in that: the upper surface of described horizontal Baltimore groove and longitudinal concave groove is smooth meniscus, meniscus intermediate point is minimum, surfacing is non-lipophilic material, and oil droplet flows above and do not adhere to.
3. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1 and 2, is characterized in that: the making of described horizontal Baltimore groove is taked colloidal liquid to fill sclerosis to add surface and mould shaping mode and realize, and material must fire-proof high-temperature resistant.
4. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1, is characterized in that: described longitudinal concave groove takes the mode of plastics or metal forming to make, and material must fire-proof high-temperature resistant.
5. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1, it is characterized in that: described micro weight Fibre Optical Sensor comprises shell, reaction diaphragm, precision spring, displacement sheet, optical-fiber laser penetrate source device and signal wire, and described signal wire is drawn and is connected with described signal processing system.
6. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1, is characterized in that: the material of the reaction diaphragm of micro weight Fibre Optical Sensor is the material that lipophilicity is good.
7. the fuel tank leakage of oil prior-warning device of a kind of gas-liquid heat tube heat exchanger according to claim 1, is characterized in that: described alarm comprises LED flashing lamp and loudspeaker.
8. a fuel tank leakage of oil method for early warning for gas-liquid heat tube heat exchanger, is characterized in that, comprise:
Step one, micro-leakage of oil at the weld of oil tank bottom plate and heat pipe, along heat pipe outer wall surface current in horizontal Baltimore groove, can collect and flow in longitudinal concave groove under tilt condition;
Step 2, oil along inclined direction flow into downwards in oil storage tank from longitudinal concave groove;
Step 3, flow into oil storage tank oil can absorb by the reaction diaphragm of the micro weight Fibre Optical Sensor bottom oil groove, the weight of reaction diaphragm can strengthen and compress precision spring;
Step 4, precision spring by force transmission to displacement sheet, can cause the movement in downward direction of displacement sheet;
Step 5, optical-fiber laser are penetrated the laser beam that source device launches and are played resilience after displacement sheet, meet bottom wall afterwards and again rebound, so repeatedly after 10 times by optical-fiber laser penetrate source device receive;
Step 6, optical-fiber laser are penetrated source device and are exported total distance L that ray 10 resiliences pass by signal processing system;
Step 7, setting reaction diaphragm do not absorb oil and displacement sheet when not moving, and total distance that ray 10 resiliences are passed by is L0, and the distance reduction threshold values that setting starts alarm is Δ L;
Step 8, signal processing system carry out data processing and judgement, as (L0-L) >=Δ L, signal processing system output alarm signal is to alarm, the loudspeaker of fuel tank side sends alerting signal, LED continues flicker ruddiness, synchronous signal disposal system exports shutdown signal, closes the valve of fuel tank oiler, cuts off fuel feeding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511001134.6A CN105509968B (en) | 2015-12-28 | 2015-12-28 | The fuel tank oil leak prior-warning device and method of gas-liquid heat exchange of heat pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511001134.6A CN105509968B (en) | 2015-12-28 | 2015-12-28 | The fuel tank oil leak prior-warning device and method of gas-liquid heat exchange of heat pipe |
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| CN105509968A true CN105509968A (en) | 2016-04-20 |
| CN105509968B CN105509968B (en) | 2017-10-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车系统（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
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| CN105509968B (en) | 2017-10-13 |
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