CN102755870B - Double-flow-mode fuel oil ground pre-washing method and device thereof - Google Patents
Double-flow-mode fuel oil ground pre-washing method and device thereof Download PDFInfo
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- CN102755870B CN102755870B CN201210097451.2A CN201210097451A CN102755870B CN 102755870 B CN102755870 B CN 102755870B CN 201210097451 A CN201210097451 A CN 201210097451A CN 102755870 B CN102755870 B CN 102755870B
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- 239000007789 gas Substances 0.000 claims abstract description 224
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 150
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000001301 oxygen Substances 0.000 claims abstract description 46
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- 238000011084 recovery Methods 0.000 claims description 27
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Abstract
The invention discloses a double-flow-mode fuel oil ground pre-washing method and device thereof. The double-flow-mode fuel oil ground pre-washing method comprises the following steps of: performing inertia treatment on fuel oil in an oil tank of a fuelling vehicle by using nitrogen-rich gas generated by a nitrogen-rich gas generating device, wherein the nitrogen-rich gas generating device comprises more than two nitrogen-rich gas generators, and the nitrogen-rich gas outlets of the nitrogen-rich gas generators are connected in series or in parallel or in series and parallel by switching bypass control valves respectively; and during inertia treatment on fuel oil, switching corresponding bypass control valves to make the flow and the purity of nitrogen-rich gas output by the nitrogen-rich gas generating device meet the practical requirements of inertia treatment, and arranging a suction pump at the nitrogen-rich gas outlet of each nitrogen-rich gas generator respectively. Due to the adoption of the method and the device, the contradictory relation between the flow and purity of nitrogen-rich gas generated by the nitrogen-rich gas generators in a decompressed washing process is coordinated, the separating effect of a separating film is optimized, the requirement of lower oxygen content in fuel oil at the end of washing is met, and washing time is reduced.
Description
Technical field
The invention belongs to the fire-proof and explosion-proof technical field of aircraft, relate to a kind of aircraft fuel oil inerting method and device, particularly a kind of double-stream mode decompression fuel-oil floor pre-wash method and apparatus.
Background technology
Day by day perfect along with military aircraft system, equipment day by day accurate, aircraft cost is day by day expensive, and the safety problem of aircraft has obtained paying attention to widely.In July, 1996 Trans World Airlines' 800 flights Directorate of Air of airplane crash Geng Shi the United States Federal (FAA) for the safety problem pay attention to day by day of fuel tank.China also day by day payes attention to the research of fuel-tank inert gas, and expansion is also needed in relevant research badly, is especially following life the first, today of safety first, improves aircraft safety and becomes matter of utmost importance in design process.Fuel-tank inert gas technology is, by certain mode, fuel tank gas-phase space oxygen concentration is dropped to level of security.Foreign study work shows: when the oxygen concentration in fuel tanker upper gaseous phase space is lower than 9% time, attack even if aircraft suffers from 23mm bore firebomb, also can not cause burning and blast.At present, abroad conventionally using 9% after warplane adopts inerting technology, the admissible maximum oxygen concentration limit index in fuel tank upper gaseous phase space; 12% as the admissible maximum oxygen concentration limit index of civil aircraft.
Ground washing process is in refueling process or before taking off, dissolved oxygen concentration in the fuel oil in fuel tank reduced and remain on a relatively low level, make its flight course intermediate fuel oil to separate out oxygen less, thereby make oxygen concentration in the gas-phase space of upper strata remain on the level of a safety.Modern fourth generation fighter is due to the restriction of the requirement of reduction deadweight and pipeline structure, and the size of airborne nitrogen gas generating system (OBIGGS) also needs to meet the demands.And airborne nitrogen gas generating system (OBIGGS) is because washing pipeline setting is comparatively complicated, for many cabins fuel tank, if each separation arranges a road gas circuit, a road binders road, it is lengthy and jumbled and loaded down with trivial details that system will seem.Therefore just ground washing and fuel oil condition of storage have been had to higher demand.
While using normal pressure washing, usually the washing tail gas in oil storage tank is directly entered to atmosphere, cause the wasting of resources.
In addition, at present, the general fuel-oil floor washing that adopts single flow rate mode, in this washing mode process, oxygen concentration in initial fuel oil is higher, the nitrogen-rich gas of use high flow carries out washing to fuel oil can make the oxygen content in fuel oil reduce rapidly, but the increase that high flow capacity washing certainly will bring the oxygen concentration of nitrogen-rich gas (NEA) will cause the increase of the oxygen content in the final fuel oil of washing like this.And if the nitrogen-rich gas of employing higher degree washs, under certain film stalling characteristic and entry condition, the flow of nitrogen-rich gas can reduce again.Therefore, in washing fuel process, exist all the time the contradictory relation of nitrogen-rich gas purity and flow.
Summary of the invention
The object of the invention is to absorb the advantage of decompression ground pre-washing device, based on membrane property, contradictory relation in coordination decompression washing process between flow and the purity of the nitrogen-rich gas of nitrogen-rich gas generator institute output, optimize the separating effect of diffusion barrier, propose a kind of with multiple nitrogen-rich gas generator parallel waies, series system or series-parallel system are the decompression ground pre-washing device of basic double-stream mode, use the paralleling model of high flow capacity low-purity that the oxygen content of fuel oil in washing process reduced fast, and in the time that oxygen-content reduction arrives certain value, use the highly purified series model of low discharge further to wash fuel oil by switch valve, thereby make the oxygen content in fuel oil further reach lower level.
The object of the invention is to solve by the following technical programs:
A kind of double-stream mode fuel-oil floor pre-wash method, the nitrogen-rich gas that adopts nitrogen-rich gas generating means to produce carries out inerting disposal to the fuel oil in tank service truck oil tank, described nitrogen-rich gas generating means comprises two above nitrogen-rich gas generators, each nitrogen-rich gas generator realized being connected in series of mutual nitrogen-rich gas outlet by switching the mode of Bypass Control valve, be connected in parallel or connection in series-parallel connection, while carrying out fuel oil inerting disposal, make the flow of the nitrogen-rich gas that nitrogen-rich gas generating means exports by switching corresponding Bypass Control valve, purity meets the actual demand of fuel oil inerting disposal.
Another technical purpose of the present invention is to provide a kind of device of realizing above-mentioned double-stream mode fuel-oil floor pre-wash method, comprise the air pretreatment device being linked in sequence, nitrogen-rich gas generating means and tank service truck oil tank, it is characterized in that, described nitrogen-rich gas generating means comprises two above nitrogen-rich gas generators, each nitrogen-rich gas generator realized being connected in series of mutual nitrogen-rich gas outlet by switching the mode of Bypass Control valve, be connected in parallel or connection in series-parallel connection, and the oxygen rich gas delivery outlet of each nitrogen-rich gas generator is all connected with suction pump, and the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with the liquid Space of tank service truck oil tank by washing fuel branch road respectively, nitrogen filled protection branch road is communicated with the gas-phase space of tank service truck oil tank, and the gas-phase space of tank service truck oil tank reclaims branch road with decompressing fuel-oil and is connected.
Described nitrogen-rich gas generator is two, in these two nitrogen-rich gas generators, the first Bypass Control valve is wherein installed on the admission line of a nitrogen-rich gas generator, and the second Bypass Control valve is installed on the nitrogen-rich gas discharge line of another nitrogen-rich gas generator, and be connected the 3rd Bypass Control valve by gas pipeline between the gas outlet of the first Bypass Control valve and the air inlet of the second Bypass Control valve.
Described washing fuel branch road comprises Washing spray nozzle, the air inlet of this Washing spray nozzle is communicated with the nitrogen-rich gas output of nitrogen-rich gas generating means by nitrogen-rich gas flow control valve, and the oil-in of Washing spray nozzle is communicated with the liquid Space of tank service truck oil tank by fuel circulating pump.
Described nitrogen filled protection branch road comprises the gas storage flushing by-passing valve being linked in sequence and rinses stop valve; the air inlet of by-passing valve is rinsed in this gas storage and the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with; rinse the gas outlet of stop valve and is communicated with the gas-phase space of tank service truck oil tank, and the gas outlet of gas storage flushing by-passing valve stores stop valve by nitrogen-rich gas and is connected with rich nitrogen storage bottle.
Described decompressing fuel-oil reclaims branch road and comprises that vavuum pump, washing tail gas stop valve, washing tail gas by-passing valve, fuel oil reclaim one-level compressor, fuel oil reclaims one-level cooler, fuel oil steam film separator, liquid trap and fuel oil recovery pump; The air inlet of described vavuum pump is communicated with the gas-phase space of tank service truck oil tank, and vacuum delivery side of pump reclaims with washing tail gas stop valve, fuel oil fuel oil that one-level compressor, fuel oil reclaim fuel-steam outlet, liquid trap, fuel oil recovery pump and the tank service truck oil tank of gas access, the fuel-steam membrane separation device of one-level cooler, fuel-steam membrane separation device successively and reclaims and mouthful be connected.
Between the gas outlet of the gas vent of described fuel-steam membrane separation device and washing tail gas stop valve, be connected successively fuel oil and reclaim circulating pump, fuel oil recovery two-stage compressor and fuel oil recovery secondary coolers; The gas outlet of described vavuum pump is also by washing tail gas by-passing valve and external environment connect.
Described nitrogen-rich gas generator comprises shell and cannulated tunica fibrosa, the two ends of described cannulated tunica fibrosa are connected with two tube sheets that are relatively fixed on outer casing inner wall respectively, and on shell, air intlet is set respectively, the outlet of rich nitrogen outlet and oxygen rich air.
Described air pretreatment device comprises thermal source passage, air gas bomb, air flow rate adjustment valve and the filter of the air filter that is linked in sequence, air compressor, aftercooler, and the low-temperature receiver passage of the air inlet of this air filter and aftercooler all and external environment connect.
According to above technical scheme, can realize following beneficial effect:
1, the present invention adopts mobile unit directly fuel oil to be washed, owing to adopting mobile unit, without the bulking value of considering equipment, the outlet of nitrogen-rich gas generator oxygen rich gas adopts vavuum pump suction, improve mass transfer force, make nitrogen-rich gas generator produce the higher nitrogen-rich gas of purity, be conducive to the oxygen in fuel oil to cement out more fully.Washing tail gas separates the fuel-steam in tail gas by fuel-steam membrane separation device, has further improved the amount that fuel oil reclaims.The two-flow pattern adopting in washing process both can meet the requirement of washing process starting stage high flow capacity, also can meet the requirement of the more low oxygen content in washing end of a period fuel oil, reduced wash time.
2, show after deliberation not only there is lower oxygen concentration through the tail gas of nitrogen-rich gas washing, and flow also can meet the demand of nitrogen-rich gas generating means, and for a kind of like this gas being possessed of good qualities, can cause the wasting of resources if enter atmosphere.The filtration of the present invention's process and tonifying Qi pressurized treatments be inlet gas as nitrogen-rich gas generator by it, can reduce the oxygen concentration of rich nitrogen aerogenesis, reduce required amount of air entrainment, increase nitrogen efficiency processed and gas production, thereby can reduce the time to certain oxygen concentration by washing fuel.In washing tail gas, exist a large amount of fuel-steams, and this part fuel-steam must reclaim.Therefore the fuel washing device that, the application relates to arranges fuel-steam separation membrane device fuel-steam is reclaimed efficiently.
3, studies have shown that through theory, the pressure (back pressure) of the oxygen rich gas outlet side of the stalling characteristic of nitrogen-rich gas diffusion barrier and film has certain relation, in traditional nitrogen-rich gas film separation system, oxygen rich gas outlet side is directly connected with atmosphere, oxygen nitrogen separating effect is poor, the nitrogen-rich gas purity producing is lower, will directly affect clean result.The present invention considers the impact of nitrogen-rich gas generator oxygen rich gas outlet back pressure on its separating effect, uses suction pump to aspirate its oxygen rich gas outlet side, causes nitrogen-rich gas generator to produce good separating effect.And further consider the recovery problem of washing process intermediate fuel oil steam, adopt organic gas separation membrane device further to reclaim washing tail gas, thereby form a kind of double-stream mode decompression fuel-oil floor pre-wash method and apparatus.
Brief description of the drawings
Fig. 1 is double-stream mode fuel-oil floor washing device connection diagram;
Fig. 2 is hollow-fibre membrane nitrogen-rich gas generator architecture schematic diagram;
Wherein: 1 is air filter; 2 is air compressor; 3 is aftercooler; 4 is air discharge line valve; 5 is air storage bottle; 6 is air flow rate adjustment valve; 7 is filter; 8 is one-level nitrogen-rich gas generator; 9 is secondary nitrogen-rich gas generator; 10 is one-level aspiration pump; 11 is secondary aspiration pump; 12,13,14 is Bypass Control valve; 15 is rich nitrogen storage bottle; 16 is rich nitrogen gas storage stop valve; 17 is gas storage flushing by-passing valve; 18 is nitrogen-rich stream adjustable valve; 19 for rinsing stop valve; 20 is Washing spray nozzle; 21 is fuel circulating pump; 22 is tank service truck oil tank; 23 is vavuum pump; 24 for rinsing tail gas by-passing valve; 25 is washing tail gas stop valve; 26 is fuel oil recovery one-level compressor; 27 is fuel oil recovery one-level cooler; 28 is fuel-steam membrane separation device; 29 is fuel oil recovery circulating pump; 30 is fuel oil recovery two-stage compressor; 31 is fuel oil recovery secondary coolers; 32 is liquid trap; 33 is fuel oil recovery pump; 34 is air intake, and 35 is that left end socket 36 is that left tube sheet 37 is housing, and 38 is oxygen rich air outlet, and 39 is right end socket, 40 is hollow-fibre membrane, and 41 is rich nitrogen outlet, and 42 is right tube sheet, and 43 is main line, 44 is bye-pass, and 45 is gas vent aperture, and 46 is support, and 47 is gas inlet tube.
Detailed description of the invention
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Explain technical scheme of the present invention below with reference to accompanying drawing.
As Fig. 1, the present invention mainly comprises air compressor 2, nitrogen-rich gas generator 8,9, Washing spray nozzle 16, vavuum pump 19, fuel-steam membrane separator 24.
As shown in Figure 2, above nitrogen-rich gas generator 8,9 adopts horizontal Fixed Tubesheet Structure form, its tube bank is to adopt polyethylene film, polypropylene screen, poly tetrafluoroethylene or polyvinylidene fluoride film to make cannulated tunica fibrosa 40, the two ends of described many cannulated tunica fibrosas 40 are individually fixed on left tube sheet 36 and right tube sheet 42, then be installed in cylindrical housings 37, housing 37 two ends are equipped with respectively left end socket 35 and right end socket 39, left end socket 35 is provided with air intake 34, right end socket 39 is provided with rich nitrogen outlet 41, and housing 37 is provided with oxygen rich air outlet 38.
According to above-described equipment and version thereof, operation principle of the present invention is as follows:
Described air compressor 2 sucks after the air compression in atmospheric environment, lower the temperature and enter successively one-level nitrogen-rich gas generator 8 and secondary nitrogen-rich gas generator 9 produces nitrogen-rich gas by aftercooler 3, by Bypass Control valve 12, 13, the connected mode of a secondary nitrogen-rich gas generator is changed in 14 switching, and by suction pump to its oxygen rich gas outlet side suction, make it have good separating effect, the nitrogen-rich gas producing is entered and in tank service truck oil tank 22 bottom fuel oils, is produced micro-bubble and take away air pressure in the dissolved oxygen tank service truck oil tank 22 in fuel oil lower than external atmospheric pressure by Washing spray nozzle 20 after by nitrogen-rich gas flow control valve 18 decompression, this pressure is maintained by vavuum pump 23.
Described air compressor 2, aftercooler 3, air storage bottle 5 and nitrogen-rich gas generator 8, 9 form nitrogen-rich gas generation systems, Washing spray nozzle 20, fuel circulating pump 21 and vavuum pump 23 form decompressing fuel-oil washing system, and fuel oil reclaims one-level compressor 26, fuel oil reclaims one-level cooler 27, fuel-steam membrane separation device 28, fuel oil reclaims circulating pump 29, fuel oil reclaims two-stage compressor 30, fuel oil reclaims secondary coolers 31, liquid trap 32, fuel oil recovery pump 33 forms fuel oil recovery system, by air discharge line valve 4, air flow rate adjustment valve 6, rich nitrogen gas storage stop valve 16, by-passing valve 17 is rinsed in gas storage, nitrogen-rich gas flow control valve 18, rinse stop valve 19, switching and the adjusting of rinsing tail gas by-passing valve 24 and washing tail gas stop valve 25, can make device be operated in respectively gas-phase space rinse mode, washing fuel pattern, nitrogen-rich gas storage mode and pressurization maintain pattern, by Bypass Control valve 12, 13, 14 switching can make nitrogen-rich gas generation systems be operated in high flow capacity low-purity pattern in parallel and low discharge high-purity pattern.
Below in conjunction with embodiment, the present invention is described in further detail:
Referring to Fig. 1, described air filter 1 entrance is directly communicated with atmospheric environment, air filter 1 exports through pipeline and is connected with described air compressor 2 air inlets, air compressor 2 exhaust outlets are connected with the hot side entrance of aftercooler 3 by pipeline, the hot side outlet of aftercooler 3 is connected with air discharge line valve 4 entrances by pipeline, air discharge line valve 4 exports by pipeline and is connected with the entrance of air gas bomb 5, the outlet of air gas bomb 5 is connected with the entrance of air flow rate adjustment valve 6 by pipeline, the outlet of air flow rate adjustment valve 6 connects by the entrance of pipe-and-filter 7, the outlet of filter 7 is connected with air intake (34) on nitrogen-rich gas generator 8 and the entrance of Bypass Control valve 12 respectively by pipeline, nitrogen-rich gas outlet 41 on nitrogen-rich gas generator 8, oxygen rich gas outlet 31 on nitrogen-rich gas generator 8 is connected with the entrance of suction pump 11 by pipeline, the outlet of suction pump 11 is directly communicated with atmosphere, the outlet of nitrogen-rich gas generator 8 is connected with the entrance of Bypass Control valve 13 and Bypass Control valve 14 respectively by pipeline, the outlet of Bypass Control valve 12 is connected respectively at the entrance of Bypass Control valve 13 and the air intake 34 of nitrogen-rich gas generator 9 by pipeline, the oxygen rich gas outlet 31 of nitrogen-rich gas generator 9 is connected with the entrance of suction pump 10 by pipeline, the outlet of suction pump 10 is directly communicated with atmosphere, after being connected with the outlet of Bypass Control valve 14 by pipeline, the oxygen rich gas outlet of nitrogen-rich gas generator 9 is connected with the entrance of gas storage flushing by-passing valve 17 and nitrogen-rich gas flow control valve 18 respectively by pipeline, gas storage flushing by-passing valve 17 exports by pipeline and is connected with the entrance of rich nitrogen gas storage stop valve 16 and flushing stop valve 19 respectively, the outlet of rich nitrogen gas storage stop valve 16 is connected with rich nitrogen storage bottle 15 by pipeline, the outlet of rinsing stop valve 19 is connected with the rinse mouth on tank service truck oil tank 22 by pipeline, the entrance of nitrogen-rich stream adjustable valve 18 is connected with the gas access end of Washing spray nozzle 20 by pipeline, the fuel filler end of Washing spray nozzle 20 is connected with the outlet of fuel circulating pump 21 by fluid pipeline, fuel circulating pump 21 entrances are connected with tank service truck oil tank 22 bottom fuel oil loop exits by fluid pipeline, Washing spray nozzle 20 is placed in tank service truck oil tank 22.
Tank service truck oil tank 22 top passages are connected with vavuum pump 23 entrances by pipeline, vacuum pump outlet is connected with the entrance that rinses tail gas by-passing valve 24 and washing tail gas stop valve 25 respectively by pipeline, the outlet of rinsing tail gas by-passing valve 24 is directly communicated with atmosphere, the outlet of washing tail gas stop valve 24 reclaims the air inlet of one-level compressor 26 with fuel oil respectively by pipeline and the outlet of fuel oil recovery secondary coolers 31 is connected, the exhaust outlet that fuel oil reclaims one-level compressor 26 is connected by the gas access on pipeline and fuel oil recovery one-level cooler 27 housings, the gas vent that fuel oil reclaims on one-level cooler 27 housings is connected with the gas access of fuel-steam membrane separation device 28 by pipeline, the fuel-steam outlet of fuel-steam membrane separation device 28 is connected with the entrance of liquid trap 32 by fluid pipeline, the outlet of liquid trap 32 is connected with the entrance of fuel oil recovery pump 33 by fluid pipeline, the outlet of fuel oil recovery pump 33 is reclaimed mouth by the fuel oil of fluid pipeline and tank service truck oil storage tank 22 and is connected, the gas vent of fuel-steam separation membrane device is connected with the entrance that fuel oil reclaims circulating pump 29 by pipeline, the outlet that fuel oil reclaims circulating pump 29 is connected with the air inlet that fuel oil reclaims two-stage compressor 30 by pipeline, the exhaust outlet that fuel oil reclaims two-stage compressor 30 is connected with the gas access that fuel oil reclaims on secondary coolers 31 housings by pipeline, the gas vent that fuel oil reclaims on secondary coolers 31 housings is connected with the outlet of washing tail gas stop valve 25 and the air inlet of fuel oil recovery one-level compressor 26 respectively by pipeline.
In the present embodiment, the mode of operation of each pattern is as follows:
In the time that device is operated in washing fuel pattern, described method comprises the following steps: 1) open air cutoff valve 4 and start air compressor 2, suck the pure air after being filtered by air filter 2, produce high pressure pure air, after aftercooler 3 is cooling, be filled with in air storage bottle 5, 2) in air storage bottle 5, pressure reaches after setting value, regulate air flow rate adjustment valve 6, open Bypass Control valve 12 and 14, and close Bypass Control valve 13, make nitrogen-rich gas generation systems be operated in high flow capacity low-purity pattern in parallel, open vavuum pump 10 and 11, nitrogen-rich gas generator oxygen enrichment outlet side is aspirated, air enters the nitrogen-rich gas of nitrogen-rich gas generator 8 and 9 generation high flow capacity low-purity after filter 7 removal of impurities, 3) close nitrogen-rich gas gas storage stop valve 16, gas storage flushing by-passing valve 17, rinse tail gas by-passing valve 24, open and regulate nitrogen-rich gas flow control valve 18 and fuel circulating pump 21, nitrogen-rich gas fully mixes in Washing spray nozzle 20 with fuel oil, pass in tank bottom fuel oil and produce micro-bubble, and with fuel oil in the oxygen and the nitrogen that dissolve carry out mass transfer, displace the oxygen in fuel oil, mixed gaseous mixture enters upper gaseous phase space, and oxygen content in fuel oil is reduced rapidly, 4) when the oxygen content in fuel oil reaches after setting value, close Bypass Control valve 12 and 14 and open Bypass Control valve 13, make nitrogen-rich gas generation systems be operated in series connection low discharge high-purity pattern and further the oxygen in fuel oil is replaced, 5) open washing tail gas stop valve 25, vavuum pump 23 and fuel oil reclaim circulating pump 29, fuel oil reclaims one-level compressor 26 and fuel oil reclaims two-stage compressor 30, making tank service truck oil tank 22 upper strata gas-phase space mists after fuel oil reclaims 26 superchargings of one-level compressor, enter fuel oil reclaims the one-level cooler 27 cooled mists that contain great amount of fuel oil steam and enters after fuel oil reclamation film separator 28 is isolated fuel-steam and is condensed into liquid state and enter liquid trap 32, the tail gas that contains less fuel-steam is reclaimed after circulating pump 29 enters the supercharging of fuel oil recovery two-stage compressor and is entered after fuel oil recovery secondary coolers 31 by fuel oil, mix with the mist of suction in tank service truck oil tank 22, 6), after the fuel level in liquid trap 32 reach a certain height, open fuel oil recovery pump 33 liquid fuel in liquid trap 32 is delivered in tank service truck oil tank 22 again, 7) when tank service truck oil tank 22 intermediate fuel oil oxygen content reach after setting value, close nitrogen-rich gas flow control valve 18, fuel circulating pump 21, washing tail gas stop valve 25, vavuum pump 23, fuel oil recovery circulating pump 29, fuel oil recovery one-level compressor 27 and fuel oil and reclaim two-stage compressor 30, washing fuel pattern stops.
In the time that device is operated in gas-phase space nitrogen filled protection pattern, described method comprises the steps: 1) open air cutoff valve 4 and start air compressor 2, suck the pure air after being filtered by air filter 2, produce high pressure pure air, after aftercooler 3 is cooling, be filled with in air storage bottle 5; 2) in air storage bottle 5, pressure reaches after setting value, regulate air flow rate adjustment valve 6, open Bypass Control valve 13 and close Bypass Control valve 12 and 14, make nitrogen-rich gas generation systems be operated in series connection low discharge high-purity pattern, open vavuum pump 10 and 11, nitrogen-rich gas generator oxygen enrichment outlet side is aspirated, and air enters nitrogen-rich gas generator 8 and 9 and produces the highly purified nitrogen-rich gas of low discharge after filter 7 removal of impurities; 3) close nitrogen-rich gas gas storage stop valve 16, nitrogen-rich gas flow control valve 18 and washing tail gas stop valve 25, opening gas storage rinses by-passing valve 17, rinses stop valve 19 and rinses tail gas by-passing valve 24, the nitrogen-rich gas that nitrogen-rich gas generation systems is produced passes into tank service truck oil tank upper strata gas-phase space, reduce its oxygen concentration with after it mixes, and mist is entered in atmospheric environment by rinsing tail gas by-passing valve 24; 4) in the time that tank service truck oil tank 22 gas-phase space oxygen concentrations reach setting value, to close gas storage and rinse by-passing valve 17, rinse stop valve 19 and rinse tail gas by-passing valve 24, gas-phase space nitrogen filled protection pattern stops.
In the time that device is operated in nitrogen-rich gas storage mode, described method comprises the steps: 1) open air cutoff valve 4 and start air compressor 2, suck the pure air after being filtered by air filter 2, produce high pressure pure air, after aftercooler 3 is cooling, be filled with in air storage bottle 5; 2) in air storage bottle 5, pressure reaches after setting value, regulate air flow rate adjustment valve 6, open Bypass Control valve 13 and close Bypass Control valve 12 and 14, make nitrogen-rich gas generation systems be operated in series connection low discharge high-purity pattern, open vavuum pump 10 and 11, nitrogen-rich gas generator oxygen enrichment outlet side is aspirated, and air enters nitrogen-rich gas generator 8 and 9 and produces the highly purified nitrogen-rich gas of low discharge after filter 7 removal of impurities; 3) open rich nitrogen gas storage stop valve 16 and gas storage and rinse by-passing valve 17, close nitrogen-rich gas flow control valve 18 and rinse stop valve 19, make high-purity nitrogen-rich gas all flow into rich nitrogen storage bottle 15; 4) when the pressure in rich nitrogen storage bottle 15 reaches after setting value, to close rich nitrogen gas storage stop valve 16 and gas storage and rinse by-passing valve 17, nitrogen-rich gas storage mode finishes.
Above by reference to the accompanying drawings the preferred specific embodiment of described the present invention only for embodiments of the present invention are described; instead of as the restriction to aforementioned goal of the invention and appended claims content and scope; every foundation technical spirit of the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs to the technology of the present invention and rights protection category.
Claims (6)
1. a double-stream mode fuel-oil floor pre-washing device, comprise the air pretreatment device being linked in sequence, nitrogen-rich gas generating means and tank service truck oil tank, it is characterized in that, described nitrogen-rich gas generating means comprises two above nitrogen-rich gas generators, each nitrogen-rich gas generator realized being connected in series of mutual nitrogen-rich gas outlet by switching the mode of Bypass Control valve, be connected in parallel or connection in series-parallel connection, and the oxygen rich gas delivery outlet of each nitrogen-rich gas generator is all connected with suction pump, and the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with the liquid Space of tank service truck oil tank by washing fuel branch road respectively, nitrogen filled protection branch road is communicated with the gas-phase space of tank service truck oil tank, and the gas-phase space of tank service truck oil tank reclaims branch road with decompressing fuel-oil and is connected, described decompressing fuel-oil reclaims branch road and comprises that vavuum pump, washing tail gas stop valve, washing tail gas by-passing valve, fuel oil reclaim one-level compressor, fuel oil reclaims one-level cooler, fuel oil steam film separator, liquid trap and fuel oil recovery pump, the air inlet of described vavuum pump is communicated with the gas-phase space of tank service truck oil tank, and vacuum delivery side of pump reclaims with washing tail gas stop valve, fuel oil fuel oil that one-level compressor, fuel oil reclaim fuel-steam outlet, liquid trap, fuel oil recovery pump and the tank service truck oil tank of gas access, the fuel-steam membrane separation device of one-level cooler, fuel-steam membrane separation device successively and reclaims and mouthful be connected, described nitrogen-rich gas generator is two, in these two nitrogen-rich gas generators, the first Bypass Control valve is wherein installed on the admission line of a nitrogen-rich gas generator, and the second Bypass Control valve is installed on the nitrogen-rich gas discharge line of another nitrogen-rich gas generator, and be connected the 3rd Bypass Control valve by gas pipeline between the gas outlet of the first Bypass Control valve and the air inlet of the second Bypass Control valve.
2. double-stream mode fuel-oil floor pre-washing device according to claim 1, it is characterized in that, described washing fuel branch road comprises Washing spray nozzle, the air inlet of this Washing spray nozzle is communicated with the nitrogen-rich gas output of nitrogen-rich gas generating means by nitrogen-rich gas flow control valve, and the oil-in of Washing spray nozzle is communicated with the liquid Space of tank service truck oil tank by fuel circulating pump.
3. double-stream mode fuel-oil floor pre-washing device according to claim 1; it is characterized in that; described nitrogen filled protection branch road comprises the gas storage flushing by-passing valve being linked in sequence and rinses stop valve; the air inlet of by-passing valve is rinsed in this gas storage and the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with; rinse the gas outlet of stop valve and is communicated with the gas-phase space of tank service truck oil tank, and the gas outlet of gas storage flushing by-passing valve stores stop valve by nitrogen-rich gas and is connected with rich nitrogen storage bottle.
4. double-stream mode fuel-oil floor pre-washing device according to claim 1, it is characterized in that, between the gas vent of described fuel-steam membrane separation device and the gas outlet of washing tail gas stop valve, be connected successively fuel oil and reclaim circulating pump, fuel oil recovery two-stage compressor and fuel oil recovery secondary coolers; The gas outlet of described vavuum pump is also by washing tail gas by-passing valve and external environment connect.
5. double-stream mode fuel-oil floor pre-washing device according to claim 1, it is characterized in that, described nitrogen-rich gas generator comprises shell and cannulated tunica fibrosa, the two ends of described cannulated tunica fibrosa are connected with two tube sheets that are relatively fixed on outer casing inner wall respectively, and on shell, air intlet is set respectively, the outlet of rich nitrogen outlet and oxygen rich air.
6. double-stream mode fuel-oil floor pre-washing device according to claim 1, it is characterized in that, described air pretreatment device comprises thermal source passage, air gas bomb, air flow rate adjustment valve and the filter of the air filter that is linked in sequence, air compressor, aftercooler, and the low-temperature receiver passage of the air inlet of this air filter and aftercooler all and external environment connect.
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| CN201210097451.2A CN102755870B (en) | 2012-04-06 | 2012-04-06 | Double-flow-mode fuel oil ground pre-washing method and device thereof |
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| CN201210097451.2A CN102755870B (en) | 2012-04-06 | 2012-04-06 | Double-flow-mode fuel oil ground pre-washing method and device thereof |
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Families Citing this family (9)
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| US9505500B2 (en) * | 2015-01-23 | 2016-11-29 | Ametek, Inc. | Inerting fuel systems, methods, and apparatuses |
| CN104843188B (en) * | 2015-04-22 | 2017-08-01 | 南京航空航天大学 | A kind of aircraft fuel-tank inert gas device based on catalytic oxidation technologies |
| CN106762270A (en) * | 2016-12-27 | 2017-05-31 | 南京航空航天大学 | A kind of air separates inerting automotive oil tank device and its method of work |
| CN107941545B (en) * | 2017-12-21 | 2023-09-26 | 南京航空航天大学 | Experiment table for reducing fuel tank flammability based on controllable catalytic combustion |
| DE102018211338A1 (en) * | 2018-07-10 | 2020-01-16 | Robert Bosch Gmbh | Fuel delivery device for cryogenic fuels and method for operating a fuel delivery device |
| CN110510132B (en) * | 2019-09-03 | 2023-02-24 | 中国商用飞机有限责任公司 | Three-wheel type fuel tank inerting device and control method thereof |
| CN111071464A (en) * | 2020-01-06 | 2020-04-28 | 南京航空航天大学 | Airborne inerting system capable of promoting performance improvement of air separation device |
| CN111071466A (en) * | 2020-01-06 | 2020-04-28 | 南京航空航天大学 | Aircraft fuel tank inerting system and working method thereof |
| CN112298581B (en) * | 2020-10-30 | 2021-08-10 | 金陵科技学院 | Device and method for inerting oil tank of military unmanned aerial vehicle by using fuel oil backwashing |
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| CN1798687A (en) * | 2003-06-05 | 2006-07-05 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | On-board system for generating and supplying oxygen and nitrogen |
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