CN102755870A - 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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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
Perfect day by day along with the military aircraft system, equipment accurate day by day, the aircraft cost is expensive day by day, and the safety problem of aircraft has obtained paying attention to widely.In July, 1996, the airplane crash of Trans World Airlines' 800 flights more made the safety problem pay attention to day by day of Directorate of Air of the United States Federal (FAA) for 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 the design process.The fuel-tank inert gas technology is through certain mode fuel tank gas-phase space oxygen concentration to be dropped to level of security.Foreign study work shows: when the oxygen concentration in fuel tanker upper gaseous phase space is lower than 9%, even if aircraft encounter attacks to 23mm bore firebomb, also can not cause burning and blast.At present, adopt the inerting technology with 9% as warplane usually abroad after, the admissible maximum oxygen concentration limit index in fuel tank upper gaseous phase space; 12% then as the admissible maximum oxygen concentration limit index of civil aircraft.
The ground washing process be in refueling process or take off before dissolved oxygen concentration in the fuel oil in the fuel tank is reduced and remains 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 the 4th generation fighter plane owing to reduce the restriction of the requirement of deadweight and pipeline structure, the size of airborne nitrogen gas generating system (OBIGGS) also need meet the demands.And airborne nitrogen gas generating system (OBIGGS) is comparatively complicated owing to the washing pipeline setting, for many cabins fuel tank, if each separation is provided with one tunnel gas circuit, and 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 there has been higher demand.
When using the normal pressure washing, usually the washing tail gas in the oil storage tank is directly entered atmosphere, cause the wasting of resources.
In addition; At present, generally adopt the fuel-oil floor washing of single flow rate mode, in this washing mode process; Oxygen concentration in the initial fuel oil is higher; The nitrogen-rich gas of use high flow washs the oxygen content that can make in the fuel oil to fuel oil and reduces rapidly, but the increase that the 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 the washing fuel process, exist the contradictory relation of nitrogen-rich gas purity and flow all the time.
Summary of the invention
The objective of the invention is to absorb the advantage of decompression ground pre-washing device; Based on membrane property; Coordinate the flow of the nitrogen-rich gas of nitrogen-rich gas generator institute output in the decompression washing process and the contradictory relation between the purity; The separating effect of optimized Separation film; Propose a kind of decompression ground pre-washing device of the double-stream mode that is the basis with a plurality of nitrogen-rich gas generator parallel waies, series system or series-parallel system, use the paralleling model of high flow capacity low-purity that the oxygen content of fuel oil in washing process reduced fast, and when oxygen content is reduced to certain value; Use the highly purified series model of low discharge that fuel oil is further washed through switch valve, thereby make the oxygen content in the fuel oil further reach lower level.
The objective of the invention is to solve through following technical scheme:
A kind of double-stream mode fuel-oil floor pre-wash method; The nitrogen-rich gas that adopts the nitrogen-rich gas generating means to be produced carries out inerting to the fuel oil in the tank service truck oil tank to be handled; Described nitrogen-rich gas generating means comprises the nitrogen-rich gas generator more than two; Each nitrogen-rich gas generator realizes that through the mode of switching the Bypass Control valve being connected in series, being connected in parallel of mutual nitrogen-rich gas outlet or connection in series-parallel connect; When then carrying out fuel oil inerting processing, make flow, the purity of the nitrogen-rich gas that the nitrogen-rich gas generating means is exported satisfy the actual demand that the fuel oil inerting is handled through switching corresponding Bypass Control valve.
Another technical purpose of the present invention provides a kind of device of realizing above-mentioned double-stream mode fuel-oil floor pre-wash method; Comprise the air pretreatment unit, nitrogen-rich gas generating means and the tank service truck oil tank that are linked in sequence; It is characterized in that; Said nitrogen-rich gas generating means comprises the nitrogen-rich gas generator more than two; Each nitrogen-rich gas generator realizes that through the mode of switching the Bypass Control valve being connected in series, being connected in parallel of mutual nitrogen-rich gas outlet or connection in series-parallel connect; And the oxygen rich gas delivery outlet of each nitrogen-rich gas generator all is connected with suction pump; And the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with the gas-phase space of tank service truck oil tank with liquid phase spatial communication, the nitrogen filled protection branch road of tank service truck oil tank through the washing fuel branch road respectively, and the gas-phase space of tank service truck oil tank is connected with decompressing fuel-oil recovery branch road.
Described nitrogen-rich gas generator is two; In these two nitrogen-rich gas generators; The first Bypass Control valve wherein is 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 through gas pipeline between the air inlet of the gas outlet of the first Bypass Control valve and the second Bypass Control valve.
Said 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 through the nitrogen-rich gas flow control valve, and the oil-in of Washing spray nozzle then passes through the liquid phase spatial communication of fuel circulating pump and tank service truck oil tank.
Described nitrogen filled protection branch road comprises the gas storage flushing by-passing valve and flushing stop valve that is linked in sequence; The air inlet of this gas storage flushing by-passing valve is communicated with the nitrogen-rich gas output of nitrogen-rich gas generating means; The gas outlet of flushing stop valve then is communicated with the gas-phase space of tank service truck oil tank, and the gas outlet of gas storage flushing by-passing valve is connected with rich nitrogen storage bottle through nitrogen-rich gas storage stop valve.
Said 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 the one-level compressor, fuel oil reclaims one-level cooler, fuel oil steam film separator, liquid trap and fuel oil and reclaims pump; The air inlet of said vavuum pump is communicated with the gas-phase space of tank service truck oil tank, and the vacuum delivery side of pump then reclaims fuel oil that gas access, the fuel-steam outlet of fuel-steam membrane separation device, liquid trap, fuel oil that one-level compressor, fuel oil reclaim one-level cooler, fuel-steam membrane separation device reclaim pump and tank service truck oil tank with washing tail gas stop valve, fuel oil successively and reclaims and mouthful be connected.
Be connected successively between the gas outlet of the gas vent of said fuel-steam membrane separation device and washing tail gas stop valve that fuel oil reclaims circulating pump, fuel oil reclaims two-stage compressor and fuel oil reclaims secondary coolers; The gas outlet of said vavuum pump is also through washing tail gas by-passing valve and external environment connect.
Said nitrogen-rich gas generator comprises shell and cannulated tunica fibrosa; The two ends of said cannulated tunica fibrosa are connected with two tube sheets that relatively are fixed on the outer casing inner wall respectively, and on the shell air intlet is set respectively, the outlet of rich nitrogen outlet and oxygen rich air.
Said air pretreatment unit 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 adopt mobile unit; Need not to consider the bulking value of equipment, the vavuum pump suction is adopted in the outlet of nitrogen-rich gas generator oxygen rich gas, improves mass transfer force; Make the nitrogen-rich gas generator produce the higher nitrogen-rich gas of purity, help the oxygen in the fuel oil is cemented out more fully.Washing tail gas separates the fuel-steam in the tail gas through the fuel-steam membrane separation device, has further improved the amount that fuel oil reclaims.The double fluid amount pattern that adopts in the washing process both can satisfy the requirement of washing process starting stage high flow capacity, also can satisfy the requirement of the more low oxygen content in the washing end of a period fuel oil, reduced wash time.
2, show not only have lower oxygen concentration after deliberation, and flow also the demand of nitrogen-rich gas generating means can be satisfied, and, the wasting of resources can be caused if enter atmosphere for a kind of like this gas that is possessed of good qualities through the tail gas of nitrogen-rich gas washing.Filtration of the present invention's process and tonifying Qi pressurized treatments are with its inlet gas as the nitrogen-rich gas generator; Can reduce the oxygen concentration of rich nitrogen aerogenesis; Reduce required amount of air entrainment, increase system nitrogen efficient and gas production, thereby can reduce the time of washing fuel to certain oxygen concentration.Exist a large amount of fuel-steams in the washing tail gas, and this part fuel-steam must reclaim.Therefore, the fuel washing device that relates to of the application is provided with fuel-steam diffusion barrier device and comes fuel-steam is reclaimed efficiently.
3, through theoretical research proof; 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, the oxygen rich gas outlet side directly links to each other with atmosphere, and oxygen nitrogen separating effect is relatively poor; The nitrogen-rich gas purity that produces is lower, will directly influence clean result.The present invention considers the influence of nitrogen-rich gas generator oxygen rich gas outlet back pressure to its separating effect, uses suction pump that its oxygen rich gas outlet side is aspirated, and causes the nitrogen-rich gas generator to produce separating effect preferably.And further consider the recovery problem of washing process intermediate fuel oil steam, adopt organic gas diffusion barrier device that washing tail gas is further reclaimed, thereby form a kind of double-stream mode decompression fuel-oil floor pre-wash method and apparatus.
Description of drawings
Fig. 1 connects sketch map for the double-stream mode fuel-oil floor washing device;
Fig. 2 is a hollow-fibre membrane nitrogen-rich gas generator architecture sketch map;
Wherein: 1 is air filter; 2 is air compressor; 3 is aftercooler; 4 is the air discharge line valve; 5 are 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 the one-level aspiration pump; 11 is the secondary aspiration pump; 12,13,14 is the Bypass Control valve; 15 is rich nitrogen storage bottle; 16 is rich nitrogen gas storage stop valve; 17 are gas storage flushing by-passing valve; 18 is the nitrogen-rich stream adjustable valve; 19 are the flushing stop valve; 20 is Washing spray nozzle; 21 is fuel circulating pump; 22 is the tank service truck oil tank; 23 is vavuum pump; 24 are flushing tail gas by-passing valve; 25 are washing tail gas stop valve; 26 are fuel oil recovery one-level compressor; 27 are fuel oil recovery one-level cooler; 28 is the fuel-steam membrane separation device; 29 are fuel oil recovery circulating pump; 30 are fuel oil recovery two-stage compressor; 31 are fuel oil recovery secondary coolers; 32 is liquid trap; 33 are fuel oil recovery pump; 34 is air intake, and 35 is that left end socket 36 is housing for left tube sheet 37, and 38 are the 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 the gas vent aperture, and 46 is support, and 47 is gas inlet tube.
The specific embodiment
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Below will combine accompanying drawing that technical scheme of the present invention at length is described.
Like 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, and the two ends of said many cannulated tunica fibrosas 40 are individually fixed on left tube sheet 36 and the right tube sheet 42, are installed on then in the cylindrical housings 37; Housing 37 two ends are equipped with left end socket 35 and right end socket 39 respectively; Left side end socket 35 is provided with air intake 34, and 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 following:
After said air compressor 2 sucks the air and compression in the atmospheric environment; Get into one-level nitrogen-rich gas generator 8 successively through aftercooler 3 coolings and produce nitrogen-rich gas with secondary nitrogen-rich gas generator 9; Change the connected mode of a secondary nitrogen-rich gas generator through the switching of Bypass Control valve 12,13,14; And through suction pump to its oxygen rich gas outlet side suction; Make it have separating effect preferably; The nitrogen-rich gas that produces gets into the air pressure that the generation micro-bubble is taken away in the dissolved oxygen tank service truck oil tank 22 in the fuel oil in the tank service truck oil tank 22 bottom fuel oils through nitrogen-rich gas flow control valve 18 decompression backs through Washing spray nozzle 20 and is lower than external atmospheric pressure, and this pressure is kept by vavuum pump 23.
Said air compressor 2, aftercooler 3, air storage bottle 5 and nitrogen-rich gas generator 8,9 constitute the nitrogen-rich gas generation systems; Washing spray nozzle 20, fuel circulating pump 21 and vavuum pump 23 constitute the decompressing fuel-oil washing system; Fuel oil recovery one-level compressor 26, fuel oil recovery one-level cooler 27, fuel-steam membrane separation device 28, fuel oil reclaim circulating pump 29, fuel oil reclaims two-stage compressor 30, fuel oil recovery secondary coolers 31, liquid trap 32, fuel oil recovery pump 33 formation fuel oil recovery systems; Switching and adjusting through air discharge line valve 4, air flow rate adjustment valve 6, rich nitrogen gas storage stop valve 16, gas storage flushing by-passing valve 17, nitrogen-rich gas flow control valve 18, flushing stop valve 19, flushing tail gas by-passing valve 24 and washing tail gas stop valve 25; Can make device be operated in gas-phase space rinse mode, washing fuel pattern, nitrogen-rich gas storage mode and pressurization respectively and keep pattern, the switching through Bypass Control valve 12,13,14 can make the nitrogen-rich gas generation systems be operated in parallelly connected high flow capacity low-purity pattern and low discharge high-purity pattern.
Below in conjunction with embodiment the present invention is made further detailed description:
Referring to Fig. 1; Said air filter 1 inlet directly is communicated with atmospheric environment; Air filter 1 outlet is connected with said air compressor 2 air inlets through pipeline; Air compressor 2 exhaust outlets are connected with aftercooler 3 hot side entrances through pipeline; Aftercooler 3 hot side outlets are connected with air discharge line valve 4 inlets through pipeline; 4 outlets of air discharge line valve are connected with the inlet of air gas bomb 5 through pipeline; The outlet of air gas bomb 5 is connected with the inlet of air flow rate adjustment valve 6 through pipeline; The outlet of air flow rate adjustment valve 6 is connected with the inlet of filter 7 through pipeline, the outlet of filter 7 pass through pipeline respectively with nitrogen-rich gas generator 8 on air intake (34) and the inlet of Bypass Control valve 12 be connected, the nitrogen-rich gas on the nitrogen-rich gas generator 8 exports 41; Oxygen rich gas outlet 31 on the nitrogen-rich gas generator 8 is connected with the inlet of suction pump 11 through pipeline; The outlet of suction pump 11 directly is communicated with atmosphere, and the outlet of nitrogen-rich gas generator 8 is connected with the inlet of Bypass Control valve 13 with Bypass Control valve 14 respectively through pipeline, and the outlet of Bypass Control valve 12 is connected respectively at the inlet of Bypass Control valve 13 and the air intake 34 of nitrogen-rich gas generator 9 through pipeline; The oxygen rich gas outlet 31 of nitrogen-rich gas generator 9 is connected with the inlet of suction pump 10 through pipeline; The outlet of suction pump 10 directly is communicated with atmosphere, and the oxygen rich gas outlet of nitrogen-rich gas generator 9 is connected the back through pipeline and is connected with the inlet of gas storage flushing by-passing valve 17 and nitrogen-rich gas flow control valve 18 respectively through pipeline with the outlet of Bypass Control valve 14, and 17 outlets of gas storage flushing by-passing valve are connected with the inlet of rich nitrogen gas storage stop valve 16 and flushing stop valve 19 respectively through pipeline; The outlet of rich nitrogen gas storage stop valve 16 is connected with rich nitrogen storage bottle 15 through pipeline; The outlet of flushing stop valve 19 is connected with rinse mouth on the tank service truck oil tank 22 through pipeline, and the inlet of nitrogen-rich stream adjustable valve 18 passes through pipeline and is connected with the gas access end of Washing spray nozzle 20, and the fuel filler end of Washing spray nozzle 20 passes through fluid pipeline and is connected with the outlet of fuel circulating pump 21; Fuel circulating pump 21 inlets are connected with tank service truck oil tank 22 bottom fuel oil loop exits through fluid pipeline, and Washing spray nozzle 20 is placed in the tank service truck oil tank 22.
Tank service truck oil tank 22 top passages are connected with vavuum pump 23 inlets through pipeline; Vacuum pump outlet is connected with the inlet of flushing tail gas by-passing valve 24 with washing tail gas stop valve 25 respectively through pipeline; The outlet of flushing tail gas by-passing valve 24 directly is 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 through 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 through the gas access that pipeline and fuel oil reclaim on 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 through pipeline; The fuel-steam outlet of fuel-steam membrane separation device 28 is connected with the inlet of liquid trap 32 through fluid pipeline; The outlet of liquid trap 32 is connected with the inlet that fuel oil reclaims pump 33 through fluid pipeline; The outlet of fuel oil recovery pump 33 is connected through the fuel oil recovery mouth of fluid pipeline and tank service truck oil storage tank 22; The gas vent of fuel-steam diffusion barrier device is connected with the inlet that fuel oil reclaims circulating pump 29 through pipeline; The outlet that fuel oil reclaims circulating pump 29 is connected with the air inlet that fuel oil reclaims two-stage compressor 30 through pipeline, and 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 through pipeline, and the gas vent that fuel oil reclaims on secondary coolers 31 housings is connected with the air inlet that fuel oil reclaims one-level compressor 26 with the outlet of washing tail gas stop valve 25 respectively through pipeline.
The mode of operation of each pattern is following in the present embodiment:
When device is operated in the washing fuel pattern; Described method may further comprise the steps: 1) open air cutoff valve 4 and start air compressor 2; Pure air after suction is filtered by air filter 2 produces the high pressure pure air, through charging into after aftercooler 3 coolings in the air storage bottle 5; 2) after pressure reaches setting value in the air storage bottle 5; Regulate air flow rate adjustment valve 6, open Bypass Control valve 12 and 14, and close Bypass Control valve 13; Make the nitrogen-rich gas generation systems be operated in parallelly connected high flow capacity low-purity pattern; Open vavuum pump 10 and 11, nitrogen-rich gas generator oxygen enrichment outlet side is aspirated, get into the nitrogen-rich gas that nitrogen-rich gas generator 8 and 9 produces the high flow capacity low-purity after 7 removal of impurities of air process filter; 3) close nitrogen-rich gas gas storage stop valve 16, gas storage flushing by-passing valve 17, flushing 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, feeds in the tank bottom fuel oil and produces micro-bubble; And with fuel oil in the oxygen and the nitrogen that dissolve carry out mass transfer; Displace the oxygen in the fuel oil, mixed gaseous mixture gets into the upper gaseous phase space, makes that oxygen content reduces rapidly in the fuel oil; 4) after the oxygen content in the fuel oil reaches setting value, close Bypass Control valve 12 and 14 and open Bypass Control valve 13, make the nitrogen-rich gas generation systems be operated in series connection low discharge high-purity pattern and further the oxygen in the fuel oil is replaced; 5) open washing tail gas stop valve 25, vavuum pump 23 and fuel oil and reclaim circulating pump 29; Fuel oil reclaims one-level compressor 26 and reclaims two-stage compressor 30 with fuel oil; The entering fuel oil recovery one-level cooler 27 cooled mists entering fuel oil reclamation film separators 28 that contain great amount of fuel oil steam are isolated fuel-steam and are condensed into liquid back entering liquid trap 32 after making tank service truck oil tank 22 upper strata gas-phase space mists reclaim 26 superchargings of one-level compressor through fuel oil; The tail gas that contains less fuel-steam through fuel oil reclaim circulating pump 29 get into fuel oils reclaim get into fuel oil after the two-stage compressor superchargings and reclaim secondary coolers 31 after, mix with the mist of suction in the tank service truck oil tank 22; 6) after the fuel level in the liquid trap 32 reach a certain height, open fuel oil recovery pump 33 liquid fuel in the liquid trap 32 is delivered in the tank service truck oil tank 22 again; 7) after tank service truck oil tank 22 intermediate fuel oil oxygen content reach 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, the washing fuel pattern stops.
When device is operated in gas-phase space nitrogen filled protection pattern; Said method comprises the steps: 1) open air cutoff valve 4 and start air compressor 2; Pure air after suction is filtered by air filter 2 produces the high pressure pure air, through charging into after aftercooler 3 coolings in the air storage bottle 5; 2) after pressure reaches setting value in the air storage bottle 5; Regulate air flow rate adjustment valve 6; Open Bypass Control valve 13 and close Bypass Control valve 12 and 14, make the 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, get into nitrogen-rich gas generator 8 and 9 after 7 removal of impurities of air process filter and produce the highly purified nitrogen-rich gas of low discharges; 3) close nitrogen-rich gas gas storage stop valve 16, nitrogen-rich gas flow control valve 18 and washing tail gas stop valve 25; Open gas storage flushing by-passing valve 17, flushing stop valve 19 and flushing tail gas by-passing valve 24; The nitrogen-rich gas that the nitrogen-rich gas generation systems is produced feeds tank service truck oil tank upper strata gas-phase space; With reduce its oxygen concentration after it mixes, and mist is entered in the atmospheric environment through flushing tail gas by-passing valve 24; 4) when tank service truck oil tank 22 gas-phase space oxygen concentrations reach setting value, close gas storage flushing by-passing valve 17, flushing stop valve 19 and flushing tail gas by-passing valve 24, gas-phase space nitrogen filled protection pattern stops.
When device is operated in the nitrogen-rich gas storage mode; Described method comprises the steps: 1) open air cutoff valve 4 and start air compressor 2; Pure air after suction is filtered by air filter 2 produces the high pressure pure air, through charging into after aftercooler 3 coolings in the air storage bottle 5; 2) after pressure reaches setting value in the air storage bottle 5; Regulate air flow rate adjustment valve 6; Open Bypass Control valve 13 and close Bypass Control valve 12 and 14, make the 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, get into nitrogen-rich gas generator 8 and 9 after 7 removal of impurities of air process filter and produce the highly purified nitrogen-rich gas of low discharges; 3) open rich nitrogen gas storage stop valve 16 and gas storage flushing by-passing valve 17, close nitrogen-rich gas flow control valve 18 and flushing stop valve 19, make the high-purity nitrogen-rich gas all flow into rich nitrogen storage bottle 15; 4) after the pressure in the rich nitrogen storage bottle 15 reaches setting value, close rich nitrogen gas storage stop valve 16 and gas storage flushing by-passing valve 17, the nitrogen-rich gas storage mode finishes.
Combine the preferred specific embodiment of the described the present invention of accompanying drawing only to be used to explain embodiment of the present invention above; Rather than as restriction to aforementioned goal of the invention and appended claims content and scope; Every foundation technical spirit of the present invention all still belongs to the present invention's technology and rights protection category to any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. double-stream mode fuel-oil floor pre-wash method; The nitrogen-rich gas that adopts the nitrogen-rich gas generating means to be produced carries out inerting to the fuel oil in the tank service truck oil tank to be handled; It is characterized in that; Described nitrogen-rich gas generating means comprises the nitrogen-rich gas generator more than two; Each nitrogen-rich gas generator realizes that through the mode of switching the Bypass Control valve being connected in series, being connected in parallel of mutual nitrogen-rich gas outlet or connection in series-parallel connect, and when then carrying out fuel oil inerting processing, makes flow, the purity of the nitrogen-rich gas that the nitrogen-rich gas generating means is exported satisfy the actual demand that the fuel oil inerting is handled through switching corresponding Bypass Control valve.
2. device of realizing the said double-stream mode fuel-oil floor of claim 1 pre-wash method; Comprise the air pretreatment unit, nitrogen-rich gas generating means and the tank service truck oil tank that are linked in sequence; It is characterized in that; Said nitrogen-rich gas generating means comprises the nitrogen-rich gas generator more than two; Each nitrogen-rich gas generator realizes that through the mode of switching the Bypass Control valve being connected in series, being connected in parallel of mutual nitrogen-rich gas outlet or connection in series-parallel connect; And the oxygen rich gas delivery outlet of each nitrogen-rich gas generator all is connected with suction pump; And the nitrogen-rich gas output of nitrogen-rich gas generating means is communicated with the gas-phase space of tank service truck oil tank with liquid phase spatial communication, the nitrogen filled protection branch road of tank service truck oil tank through the washing fuel branch road respectively, and the gas-phase space of tank service truck oil tank is connected with decompressing fuel-oil recovery branch road.
3. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that; Described nitrogen-rich gas generator is two; In these two nitrogen-rich gas generators; The first Bypass Control valve wherein is 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 through gas pipeline between the air inlet of the gas outlet of the first Bypass Control valve and the second Bypass Control valve.
4. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that; Said 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 through the nitrogen-rich gas flow control valve, and the oil-in of Washing spray nozzle then passes through the liquid phase spatial communication of fuel circulating pump and tank service truck oil tank.
5. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that; Described nitrogen filled protection branch road comprises the gas storage flushing by-passing valve and flushing stop valve that is linked in sequence; The air inlet of this gas storage flushing by-passing valve is communicated with the nitrogen-rich gas output of nitrogen-rich gas generating means, and the gas outlet of flushing stop valve then is communicated with the gas-phase space of tank service truck oil tank, and the gas outlet of gas storage flushing by-passing valve is connected with rich nitrogen storage bottle through nitrogen-rich gas storage stop valve.
6. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that said 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 the one-level compressor, fuel oil reclaims one-level cooler, fuel oil steam film separator, liquid trap and fuel oil and reclaims pump; The air inlet of said vavuum pump is communicated with the gas-phase space of tank service truck oil tank, and the vacuum delivery side of pump then reclaims fuel oil that gas access, the fuel-steam outlet of fuel-steam membrane separation device, liquid trap, fuel oil that one-level compressor, fuel oil reclaim one-level cooler, fuel-steam membrane separation device reclaim pump and tank service truck oil tank with washing tail gas stop valve, fuel oil successively and reclaims and mouthful be connected.
7. according to the said double-stream mode fuel-oil floor of claim 6 pre-washing device; It is characterized in that, be connected successively between the gas outlet of the gas vent of said fuel-steam membrane separation device and washing tail gas stop valve that fuel oil reclaims circulating pump, fuel oil reclaims two-stage compressor and fuel oil reclaims secondary coolers; The gas outlet of said vavuum pump is also through washing tail gas by-passing valve and external environment connect.
8. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that; Said nitrogen-rich gas generator comprises shell and cannulated tunica fibrosa; The two ends of said cannulated tunica fibrosa are connected with two tube sheets that relatively are fixed on the outer casing inner wall respectively, and on the shell air intlet is set respectively, the outlet of rich nitrogen outlet and oxygen rich air.
9. according to the said double-stream mode fuel-oil floor of claim 2 pre-washing device; It is characterized in that; Said air pretreatment unit 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN102755870A true CN102755870A (en) | 2012-10-31 |
| CN102755870B CN102755870B (en) | 2014-12-10 |
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| CN107941545A (en) * | 2017-12-21 | 2018-04-20 | 南京航空航天大学 | One kind reduces the flammable experimental bench of fuel tank based on controlled catalytic burning |
| CN110510132A (en) * | 2019-09-03 | 2019-11-29 | 中国商用飞机有限责任公司 | Three-wheel type fuel-tank inert gas device and its control method |
| CN110700969A (en) * | 2018-07-10 | 2020-01-17 | 罗伯特·博世有限公司 | Fuel delivery device for cryogenic fuels and method for operating same |
| 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 |
| CN112298581A (en) * | 2020-10-30 | 2021-02-02 | 金陵科技学院 | Device and method for inerting oil tank of military unmanned aerial vehicle by using fuel oil backwashing |
| CN107466283B (en) * | 2015-01-23 | 2021-04-13 | 埃米特克有限公司 | Inerting fuel systems, methods, and apparatus |
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| CN107466283B (en) * | 2015-01-23 | 2021-04-13 | 埃米特克有限公司 | Inerting fuel systems, methods, and apparatus |
| CN104843188A (en) * | 2015-04-22 | 2015-08-19 | 南京航空航天大学 | Aircraft oil tank inerting device based on catalytic oxidation technology |
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| 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 |
| CN112298581A (en) * | 2020-10-30 | 2021-02-02 | 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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