CN101723300B - Vapor recovery device - Google Patents
Vapor recovery device Download PDFInfo
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- CN101723300B CN101723300B CN2009101794816A CN200910179481A CN101723300B CN 101723300 B CN101723300 B CN 101723300B CN 2009101794816 A CN2009101794816 A CN 2009101794816A CN 200910179481 A CN200910179481 A CN 200910179481A CN 101723300 B CN101723300 B CN 101723300B
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- adsorption tower
- pump
- open
- gasoline
- adsorption
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- 238000011084 recovery Methods 0.000 title claims abstract description 104
- 238000001179 sorption measurement Methods 0.000 claims abstract description 163
- 239000003502 gasoline Substances 0.000 claims abstract description 131
- 239000000446 fuel Substances 0.000 claims abstract description 52
- 238000003795 desorption Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000003463 adsorbent Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims description 57
- 230000004087 circulation Effects 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 18
- 238000002336 sorption--desorption measurement Methods 0.000 claims description 14
- 238000011049 filling Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000011068 loading method Methods 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 8
- 230000000306 recurrent effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 description 32
- 238000007906 compression Methods 0.000 description 32
- 239000003921 oil Substances 0.000 description 31
- 239000012809 cooling fluid Substances 0.000 description 20
- 230000006870 function Effects 0.000 description 20
- 230000014509 gene expression Effects 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 239000002828 fuel tank Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 102100036848 C-C motif chemokine 20 Human genes 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 244000287680 Garcinia dulcis Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
- B67D7/048—Vapour flow control means, e.g. valves, pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
- B67D7/049—Vapour recovery methods, e.g. condensing the vapour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Treating Waste Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention provides a vapor recovery device of a fuel dispenser, which does not desorb an adsorbent having a sufficient adsorption capacity, and which does not oversaturate the adsorbent and discharge gasoline vapor into the atmosphere. In the present invention, a first pump (19) is disposed on a recovery pipe (15) arranged at a front end opening (17) of a refueling nozzle (8), the recovery pipe (15) is opened in a gas-liquid separation chamber (21) through a condensation tank (20), the gas-liquid separation chamber (21) is connected with a first or a second adsorption tower (33, 34), a second pump (49) is disposed on a circulating pipe (48) connected with the first or the second adsorption tower (33, 34), the circulating pipe (48) is connected to the suction side of the first pump (19), and a control device (14) switches between an adsorption process and a desorption process according to the fuel supply amount.
Description
Technical field
The present invention relates to be arranged on the gas station that adds fuel oil to automobile, reclaim in refueling the vapor recovery unit of the gasoline vapour that flows out from the fuel tank of automobile.
Background technology
The fuel oil volatility such as gasoline are high, and when the fuel tank to automobile refueled, gasoline vapour and volume read-out flowed out from fuel tank pro rata.If this gasoline vapour emission in atmosphere, is then not only wasted resource, and, the danger of the fire that also existing ignites causes, the possibility of environmental pollution of causing.
For the such problem of correspondence, proposed to reclaim the gasoline vapour that flows out from fuel tank in refueling, with gasoline vapour cooling condensation and liquefaction, the gasoline vapour that can not liquefy is adsorbed on adsorbent, the vapor recovery unit (with reference to patent documentation 1) that the gas that do not contain gasoline vapour is discharged in the atmosphere.
Here, in the vapor recovery unit of the conventional art (patent documentation 1), summation according to refueling time, whether carry out adsorbent because of the saturated judgement of gasoline vapour, in other words, be the switching of carrying out the desorb (regeneration) of absorption that the adsorbent in the adsorption tower carries out and this adsorbent.
But the oil mass of oiling (flow) is at whole refueling time and inhomogeneous, has the many situations of flow in the oiling, with flow throttling (flow be'ss few) situation.
For example, if the oiling of the flow that refuels for a long time sample attitude how, the amount of the gasoline vapour that then produces also increases, exist in the stage of adsorbent being carried out before the desorb, adsorbent is saturated, does not have the adsorbed gasoline steam, with the possibility of gasoline vapour emission in the atmosphere.
On the other hand, in the situation of the oiling of the sample attitude of the flow throttling of carrying out for a long time refueling, no matter exist also that the adsorption capacity of adsorbent has enough affluences, all can switch to the problem of desorption step.
[patent documentation 1] JP 2006-198604 number
The present invention uses for reference the invention that the problems referred to above are made, and its objective is that providing a kind of can not carry out desorb to the abundant adsorbent of adsorption capacity, and adsorbent reaches supersaturation, the vapor recovery unit of the fuel charger that gasoline vapour can not discharged in the atmosphere.
Summary of the invention
Above-mentioned vapor recovery unit of the present invention 13, be preferably in and oil storage tank 1,1R, clamp gasoline pump 5 and flowmeter 6 on the oil filling pipe 2 that 1H connects, be provided with in the vapor recovery unit 13 of fuel charger 3 of filler nozzle 8 at the front end of the refueling hose 7 that is connected with oil filling pipe 2, to clamp the first pump (19: compression pump) at the recovery tube 15 of the front opening 17 of filler nozzle 8, make recovery tube 15 pass through condensate tank(trap) 20 at gas-liquid separation chamber's 21 openings, gas-liquid separation chamber 21 and the first and second adsorption tower 33,34 connect, with the first and second adsorption tower 33, clamp the second pump (49: vavuum pump) on 34 circulation pipes 48 that connect, the discharge side of the second pump 49 is connected to the inflow side of the first pump 19 by circulation pipe 48A, arrange and reclaim control part 14, this recovery control part 14 has execution and selectively gas-liquid separation chamber 21 is connected to the first or second adsorption tower 33,34, with gasoline vapour to adsorption tower 33, the absorption process of adsorbents 35 absorption in 34 and selectively with the first or second adsorption tower 33,34 are connected to the second pump 49, the gasoline vapour that is adsorbed on adsorbent 35 is carried out the function of switching of the desorption step of desorb, reclaim control part 14 and have volume read-out according to flowmeter 6 meterings of fuel charger 3, the function that absorption process and desorption step are switched.
Then, best above-mentioned gas-liquid separation chamber 21 is connected with the first adsorption tower 33 by the snorkel 30 that has clamped open and close valve 31, be connected with the second adsorption tower 34 by the snorkel 30 that has clamped open and close valve 32, at the first and second adsorption tower 33, on 34, be connected with an end to atmosphere opening and clamped open and close valve 38,39 air intake duct 40 and an end are to atmosphere opening and clamped open and close valve 42,43 blast pipe 44, with the first and second adsorption tower 33,34 clamp open and close valve 46 with being connected on the circulation pipe 48 that pump 49 connects, 47, above-mentioned control device (reclaiming control part 14) has following function, namely, the first adsorption tower 33 is being switched to desorption step, the second adsorption tower 34 is switched in the situation of absorption process, close open and close valve 31, cut off the connection of gas-liquid separation chamber 21 and the first adsorption tower 33, close open and close valve 42, cut off the first adsorption tower 33 being communicated with by blast pipe 44 and atmosphere, open open and close valve 38, the first adsorption tower 33 is communicated with atmosphere by air intake duct 40, open open and close valve 46, by circulation pipe 48, the attraction side of the first adsorption tower 33 to the second pump 49 is communicated with, open open and close valve 32, gas-liquid separation chamber 21 and the second adsorption tower 34 are communicated with, open open and close valve 43, the second adsorption tower 34 is communicated with atmosphere by blast pipe 44, close open and close valve 39, cut off the second adsorption tower 34 being communicated with by air intake duct 40 and atmosphere, close open and close valve 47, cut off the connection of the attraction side of the second adsorption tower 34 and the second pump 49, the first adsorption tower 33 is being switched to absorption process, the second adsorption tower 34 is switched in the situation of desorption step, open open and close valve 31, gas-liquid separation chamber 21 and the first adsorption tower 33 are communicated with, open open and close valve 42, by blast pipe 44, the first adsorption tower 33 is communicated with atmosphere, close open and close valve 38, cut off the first adsorption tower 33 being communicated with by air intake duct 40 and atmosphere, close open and close valve 46, cut off the first adsorption tower 33 to the connection of the attraction side of the second pump 49, close open and close valve 32, cut off the connection of gas-liquid separation chamber 21 and the second adsorption tower 34, close open and close valve 43, cut off the second adsorption tower 34 being communicated with by blast pipe 44 and atmosphere, open open and close valve 39, by air intake duct 40, the second adsorption tower 34 is communicated with atmosphere, open open and close valve 47, by circulation pipe 48, with the attraction side connection of the second adsorption tower 34 and the second pump 49.
In the present invention, best above-mentioned control device (reclaim control part 14) has carrying out gas-liquid separation chamber 21 is connected to the first or second adsorption tower 33 selectively, 34, with gasoline vapour to adsorption tower 33, the absorption process of adsorbents 35 absorption in 34 and with the first or second adsorption tower 33,34 are connected to the second pump 49 selectively, when desorb is adsorbed the switching of desorption step of gasoline vapour of agent 35 absorption, to be installed in and adsorption tower 33, open and close valve 31 on 34 pipes that connect, 32,38,39,42,43,46,47 is all open, behind certain hour (for example two seconds), to open and close valve 31,32,38,39,42,43,46,47 carry out the function (technical scheme 2) of open and close controlling.
In addition, in the present invention, best above-mentioned control device (reclaim control part 14) has carrying out gas-liquid separation chamber 21 is connected to the first or second adsorption tower 33 selectively, 34, with gasoline vapour to adsorption tower 33, the absorption process of adsorbents 35 absorption in 34 and with the first or second adsorption tower 33,34 are connected to the second pump 49 selectively, when desorb is adsorbed the switching of desorption step of gasoline vapour of agent 35 absorption, make the second pump 49 stop certain hour (for example 12 seconds), through behind the above-mentioned certain hour, drive the function (technical scheme 3) of the second pump 49.
Then, in the present invention, be preferably in above-mentioned adsorption tower 33,34 snorkels that are connected 30 and circulation pipe 48 on pressure sensor 50,51 is set, above-mentioned control device (reclaim control part 14) has stop the first and second pump 19,49 function (technical scheme 4) under the pressure by pressure sensor 50,51 meterings exceeds the situation of certain limit.
Perhaps in the present invention, the temperature sensor 28 and the temperature sensor 29 of measuring outer temperature of the temperature (liquid temperature of cooling fluid 22) of the cooling refrigeration agent (cooling fluid 22 in the condensate tank(trap) 20) of measuring above-mentioned condensing unit (condensate tank(trap) 20) preferably are set, (recovery control part 14 has the metering result according to the temperature sensor 29 of measuring outer temperature to above-mentioned control device, determine the necessary time of cooling of cooling refrigeration agent 22, if the temperature through the cooling refrigeration agent 22 after this necessary time is than the high temperature of threshold value (uniform temperature), then stop the function (technical scheme 5) of the cooling device that agent is cooled off to cooling refrigeration (cooler 23).
Have again, many fuel chargers 3 preferably are set, above-mentioned control device (reclaim control part 14) has according to the number of units of the fuel charger 3 that refuels (send content and be the number of units of the fuel charger 3 of the signal in refueling), controls the function (technical scheme 6) of the ability (as the frequency of the inverter motor of drive source) of above-mentioned the first pump 19.
The invention effect
Action effect of the present invention is listed below.
(1) because switching and the volume read-out of absorption process and desorption step carry out accordingly, so, prevent under the state that leaves large adsorption capacity, transfer to the situation of desorption step, also prevent from surpassing adsorption capacity, still continue to carry out the situation of absorption process, can guarantee the accuracy of the recovery of gasoline vapour, simultaneously, prevent the switching of unnecessary adsorption/desorption operation.
(2) because when switching absorption process and desorption step, all open and close valves are only opened the valve stipulated time (for example two seconds), after pressure in pipe reaches evenly, carry out accordingly the open and close controlling of open and close valve with the absorption process/desorption step of the first and second adsorption tower, so, can carry out swimmingly the opening and closing operations of open and close valve.
(3) because when switching absorption process and desorption step, the driving of the second pump is only stopped the stipulated time (for example 12 seconds), the amount from the gasoline vapour of the adsorption tower that becomes desorption step reach normal after, drive the second pump, so, can prevent to the attraction side of the first pump only supply with the state of affairs from the gasoline vapour of adsorption tower desorb, from the gasoline vapour of adsorption tower desorb to refueling the state of affairs that side flows backwards.
(4) if because the snorkel of adsorption tower and the pressure of circulation pipe exceed certain limit, then stop, warning, so, can easily know the fault of machine, can guarantee the accuracy of the recovery of gasoline vapour.
(5) if because the liquid temperature of cooling fluid in the condensate tank(trap) not below uniform temperature, then stops, warning, so, can easily know the fault of cooler, can guarantee the accuracy of the recovery of gasoline vapour.
(6) because be connected in the situation of vapor recovery unit at the Jiang Duotai fuel charger, correspondingly control the actuating speed of the first pump with the number of units of fuel charger in refueling, so, prevent a large amount of air with the situation that gasoline vapour is inhaled into, prevent from sucking the damnous situation of gasoline vapour.
(7) by reclaiming effectively gasoline vapour, eliminated the waste of resource, and can air conservation.
Description of drawings
Fig. 1 is the ideograph of the gas station of the expression vapor recovery unit that is provided with relevant fuel charger of the present invention.
Fig. 2 is the block diagram of the first embodiment of the present invention.
Fig. 3 is the block diagram of machine of control of the vapor recovery unit of the relevant fuel charger of expression.
Fig. 4 is the flow chart of the switching controls of the adsorption/desorption in the first embodiment.
Fig. 5 is the flow chart of the open and close controlling of the control valve during the adsorption/desorption of expression the first embodiment switches.
Fig. 6 is the control flow chart of the vavuum pump during the adsorption/desorption of the first embodiment switches.
Fig. 7 is the flow chart that the fault of the cooler in expression the first embodiment is judged control.
Fig. 8 is the flow chart of the abnormality detection control of the system that clamps the adsorption tower of carrying out absorption process in expression the first embodiment.
Fig. 9 is the flow chart of the abnormality detection control of the system that clamps the adsorption tower of carrying out desorption step in expression the first embodiment.
Figure 10 is the flow chart that expression has the driving control of the compression pump in the situation of many fuel chargers.
Figure 11 is expression with the block diagram of the sample attitude of the steam of the steam of same vapor recovery unit recovery regular gasoline and high-knock rating gasoline.
Figure 12 represents to reclaim the steam of regular gasoline and the steam of high-knock rating gasoline with special-purpose vapor recovery unit respectively, and the block diagram of the sample attitude of returning respectively.
Symbol description
1,1R, 1H: oil storage tank
2: oil filling pipe
3,3A, 3B: fuel charger
4,16: housing
5: gasoline pump
6: flowmeter
7: refueling hose
8: filler nozzle
9: the nozzle suspension member
10: nozzle switch
11: refueling control section
12: display
13,13R, 13H: vapor recovery unit
14: reclaim control part
15: recovery tube
17: opening
18: check valve
19: compression pump
20: condensate tank(trap)
21: gas-liquid separation chamber
22: cooling fluid
23: cooler
34: drainpipe
25: oil exit pipe
26,27: cock
28,29: temperature sensor
30: snorkel
31,32,38,39,42,43,46,47: open and close valve
33,34: adsorption tower
35: adsorbent
36: cooling tube
37: coolant pump
40: air intake duct
41: throttling element
44: blast pipe
45: safety valve
48: circulation pipe
49: vavuum pump
50,51: pressure sensor
52: alarm
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
Fig. 1 is the integral body of the gas station of the expression vapor recovery unit that is provided with relevant fuel charger of the present invention.
Embedded underground oil storage tank 1 in the gas station, the oil filling pipe 2 that is connected with oil storage tank 1 is provided in the housing 4 of fuel charger 3.
In housing 4, gasoline pump 5 and flowmeter 6 are installed in oil filling pipe 2, connect refueling hose 7 at oil filling pipe 2.
Front end at refueling hose 7 is provided with filler nozzle 8.Filler nozzle 8 is hung on the nozzle suspension member 9, is provided with nozzle switch 10 at nozzle suspension member 9.Nozzle switch 10 is exported when filler nozzle leaves nozzle suspension member 9 and is opened signal.
Be provided with refueling control section 11 at fuel charger 3.
The signal of opening from nozzle switch 10 is received by refueling control section 11, drives gasoline pump 5, calculates the flow signal from flowmeter 6, and volume read-out is presented at display 12, and the recovery control part 14 of these signals to vapor recovery unit 13 transmitted.
The vapor recovery unit of relevant fuel charger of the present invention 3 is whole in Fig. 1 to be represented with symbol 13.Then, vapor recovery unit 13 its integral body of fuel charger 3 by pattern be illustrated among Fig. 2.
In Fig. 2, the gasoline vapour that the fuel tank of the automobile that never illustrates flows out is reclaimed by recovery tube 15.Recovery tube 15 is set up in parallel on refueling hose 7, in the housing 4 via fuel charger 3, with 16 interior connections of housing of vapor recovery unit 13.
One end of recovery tube 15 is at the front opening 17 of filler nozzle 8.
Check valve 18 and compression pump 19 (the first pump) have been clamped at recovery tube 15.Then, recovery tube 15 with ends filler nozzle 8 opposition sides via condensate tank(trap) 20 at gas-liquid separation chamber's 21 openings.
In condensate tank(trap) 20 interior filling cooling fluids 22, cooling fluid 22 is by cooler 23 coolings.
The gasoline vapour that flows at recovery tube 15 and steam are interior when mobile at condensate tank(trap) 20, carry out heat exchange with cooling fluid 22 and condensation becomes water (state of liquid phase).
In gas-liquid separation chamber 21, the water of condensation separates with gasoline vapour from the gasoline of liquefaction, discharges to the outside of vapor recovery unit 13 through drainpipe 24.The gasoline of liquefaction through the recovery tube 25 of gas-liquid separation chamber 21 to recovery such as fuel charger 3, oil storage tanks 1.
In Fig. 2, symbol 26 expression is arranged on the cock of drainpipe 24, has stored a certain amount ofly when above at condensed water in that gas-liquid separation chamber 21 is interior, and open cock 26 is to the outside discharge of vapor recovery unit 13.Symbol 27 expression is arranged on the cock of oil exit pipe 25, and it is open when interior that the gasoline of the liquefaction a certain amount of more than is stored in gas-liquid separation chamber 21, and the gasoline that liquefies is sent to fuel charger 3, oil storage tank 1 etc.
In addition, the temperature sensor of the temperature of cooling fluid 22 is measured in symbol 28 expressions among Fig. 2, and the temperature sensor of outer temperature is measured in symbol 29 expressions.
The snorkel 30 that is connected to the gas-bearing formation part (zone that gas is resident) of gas-liquid separation chamber 21 branches into the pipe that clamps open and close valve 31 and clamps the pipe of open and close valve 32, the pipe that clamps open and close valve 31 is connected with the first adsorption tower 33, and the pipe that clamps open and close valve 32 is connected with the second adsorption tower 34.
At adsorption tower 33,34 interior filling adsorbents 35.Adsorbent 35 is the adsorbed gasoline steam effectively, selects the material of easy desorb, for example uses silica gel, the zeolite of aperture 4~100 dusts.
Set cooling tube 36 in adsorption tower 33,34, cooling tube 36 is communicated with condensate tank(trap) 20.
By driving coolant pump 37, the cooling fluid 22 in the condensate tank(trap) 20 to cooling off in the adsorption tower 33,34, improves the adsorption efficiency of adsorbent 35 in cooling tube 36 circulations.
Bottom at adsorption tower 33 connects the air intake duct that has clamped open and close valve 38, connects the air intake duct that has clamped open and close valve 39 in the bottom of adsorption tower 34.Here, the air intake duct that has clamped the air intake duct of open and close valve 38 and clamped open and close valve 39 is the air intake duct of air intake duct 40 branches that are communicated with atmosphere, clamps throttling element 41 at air intake duct 40.
On the other hand, connect the blast pipe that has clamped open and close valve 42 on the top of adsorption tower 33, connect the blast pipe that has clamped open and close valve 43 on the top of adsorption tower 34.Like this, clamp the blast pipe and the blast pipe interflow that has clamped open and close valve 43 of open and close valve 42, consisted of blast pipe 44.Clamp safety valve 45 at blast pipe 44, the end of blast pipe 44 is communicated with atmospheric side.
Have again, connect the circulation pipe that has clamped open and close valve 46 on the top of adsorption tower 33, connect the circulation pipe that has clamped open and close valve 47 on the top of adsorption tower 34.Clamp the circulation pipe and the circulation pipe interflow that has clamped open and close valve 47 of open and close valve 46, consisted of circulation pipe 48.
Like this, the circulation pipe 48A that is connected to the discharge side of vavuum pump 49 is connected to the junction of two streams B1 in the zone of attraction side of compression pump 19 in recovery tube 15, with recovery tube 15 interflow.
In Fig. 2, the pressure sensor of the pressure in the snorkel 30 is measured in symbol 50 expressions.
In addition, the pressure sensor of the pressure in the 51 expression metering circulation pipes 48 of the symbol among Fig. 2.
In Fig. 2, by recovery tube 15, snorkel 30, circulation pipe 48, circulation pipe 48A, consist of the steam recurrent canal.
The machine of the control of the vapor recovery unit 13 of relevant fuel charger 3 shows with frame table in Fig. 3.
In Fig. 3, the refueling control section 11 of fuel charger 3 have the on-off signal of fanging noz(zle) switch 10 and flowmeter 6 flow signal function and to the function of gasoline pump 5 output drive signals and to the function of display 12 output volume read-out displays.
In Fig. 3, the recovery control part 14 of vapor recovery unit 13 has the function that receives temperature sensor 28,29 temperature signal and pressure sensor 50,51 pressure signal, simultaneously, has the function of the timing signal that receives self-timer TM.
In addition, the recovery control part 14 of vapor recovery unit 13 has to the function of open and close valve 31,32,38,39,42,43,46,47 output open and close controlling signals (switching signal).
Have again, reclaim control part 14 and have to the function of pump 19,37,49 output drive signals with to the function of cooler 23 output drive signals and function from caution signals to alarm 52 that export.
Like this, refueling control section 11 be connected control part 14 and connected by information, mutually carry out the transmitting-receiving of control signal.That is, the flow signal from the refueling control section 11 of fuel charger 3 to the recovery control part 14 input flow rate meters 6 of vapor recovery unit 13, be the signal of relevant volume read-out.
Then, with reference to Fig. 2, Fig. 3, the effect of the vapor recovery unit 13 of fuel charger is described.
In the business of gas station, cooler 23 drives, and the cooling fluid 22 in the condensate tank(trap) 20 is cooled to uniform temperature (for example below 5 ℃).Adsorbent 35 in the cooling fluid 22 cooling adsorption towers 33,34 that are cooled.
Here, the first adsorption tower 33 adsorbed gasoline steams (absorption process), the second adsorption tower 34 carry out the desorb (or regeneration) (absorption process) of the sorbing material of filling.Under these circumstances, open and close valve 31,39,42,47 is opened, and open and close valve 32,38,43,46 is closed.
Here, when a side adsorption tower carries out the absorption of gasoline vapour, be filled in the desorb (or regeneration) of its inner adsorbent at the opposing party's adsorption tower.
If refuel to automobile, and filler nozzle 8 leaves nozzle suspension member 9, then nozzle switch 10 sends out signal for opening.The refueling control section 11 of receiving out signal drives gasoline pump 5, with respect to the recovery control part 14 of vapor recovery unit 13, sends content and is the signal in refueling.Receive that from refueling control section 11 content is the recovery control part 14 drive compression pumps 19 of the signal the oiling.
If filler nozzle 8 is inserted the fuel tank of the not shown automobile that goes out, begin to refuel, then the gasoline in the oil storage tank 1 is by gasoline pump 5 force feeds, discharges in the fuel tank from filler nozzle 8 to the not shown automobile that goes out.At this moment, be presented on the display 12 by the volume read-out of flowmeter 6 metering, simultaneously, be sent to the recovery control part 14 of vapor recovery unit 13 based on the metering result's of flowmeter 6 volume read-out signal.
When refueling, the fuel tank of the automobile that gasoline vapour never illustrates flows out, and the gasoline vapour of outflow is by the effect of compression pump 19, in the opening 17 inflow recovery tubes 15 of recovery tube 15.
The gasoline vapour that flows in the recovery tube 15 is cooled in condensate tank(trap) 20, and it nearly all liquefies.The gasoline that has liquefied resides in the bottom in the gas-liquid separation chamber 21, returns fuel charger 3, oil storage tank 1 etc. through oil exit pipe 25.
Do not have the gasoline vapour of liquefaction to flow at snorkel 30 in the condensate tank(trap) 20, via open and close valve 31, flow in the first adsorption tower 33.In addition, the gas that flows in the adsorption tower 33 passes through compression pump 19, is pressurized to for example about 250KPa.
Flow into gasoline vapours in the first adsorption tower 33 and be adsorbed adsorbents 35 absorption in the tower 33, the gas of discharging from the first adsorption tower 33 becomes the gas that does not contain gasoline vapour.This gas (gas that does not contain gasoline vapour) is discharged into the atmosphere from blast pipe 44 via open and close valve 42, safety valve 45.
So, its major part of gasoline vapour that flows out from the fuel tank of automobile in oiling is in condensate tank(trap) 20 condensations of vapor recovery unit 13 and be liquefied, and is recovered by gas-liquid separation chamber 21.Then, the gasoline vapour that is not liquefied at condensate tank(trap) 20 is adsorbed adsorbent 35 absorption of tower 33 and reclaims.
The gasoline vapour that is adsorbed at adsorption tower 33 breaks away from from adsorbent 35 when adsorption tower 33 becomes desorption step, via open and close valve 46, through circulation pipe 48, is attracted by vavuum pump 49.The gasoline vapour of discharging from vavuum pump 49 flows into the attraction side of compression pump 19 through circulation pipe 48A, junction of two streams B1.
That is, gasoline vapour does not escape to outside the fuel charger 3, but is recovered.
Then, with reference to Fig. 4, the switching of the adsorption/desorption of the first adsorption tower 33 and the second adsorption tower 34 is described.
In the explanation relevant with Fig. 4~Fig. 6 (explanation of the switching of adsorption tower 33,34 adsorption/desorption), switch to the operation (desorption step) that desorb or regeneration are filled into inner adsorbent with the first adsorption tower 33 from the operation (absorption process) of adsorbed gasoline steam, the second adsorption tower 34 is that example describes from the situation that desorption step switches to absorption process.
In Fig. 4, in step STI, judge that whether the recovery control part 14 of vapor recovery unit 13 has inputted the volume read-out signal from the refueling control section 11 of fuel charger 3, in other words, whether in oiling.
If in oiling, namely, from refueling control section 11 to reclaiming control part 14 input volume read-out signals (step STI is yes), then obtain the aggregate-value (carrying out the summation of volume read-out of the switching of adsorption tower 33,34 adsorption/desorption since last time) (step ST2) of volume read-out.
Then, judge that the aggregate-value obtained from step ST2 is whether more than threshold value (step ST3).
Here, threshold value is the aggregate-value of volume read-out, as the adsorbent 35 abundant adsorbed gasoline steams that are considered in the first adsorption tower 33, sets near the value (for example 500 liters) of saturation state.
If aggregate-value reaches threshold value above (step ST3 is yes), then open and close controlling open and close valve (step ST4) makes the first adsorption tower 33 of having carried out absorption process carry out desorption step, has carried out the second adsorption tower 34 of desorption step and has carried out absorption process.Then, the aggregate-value of replacement volume read-out (aggregate-value of obtaining at step ST2) (step ST5).
In step ST3, if the not enough threshold value (step ST3 is no) of aggregate-value is then returned step ST1.
In step ST4, carry out desorption step in order to make the first adsorption tower 33 that has carried out absorption process, carry out the second adsorption tower 34 of desorption step and carried out absorption process, in Fig. 2, close open and close valve 31,39,42,47, open open and close valve 32,38,43,46.
By this open and close controlling of open and close valve, not at the gasoline vapour of condensate tank(trap) 20 liquefaction through having clamped the pipe of snorkel 30, open and close valve 32, supply with to the second adsorption tower 34.Then, gasoline vapour carries out adsorption treatment by the adsorbent 35 in the adsorption tower 34, and the air that does not contain gasoline vapour is discharged into the atmosphere from blast pipe 44.
On the other hand, pipe, the circulation pipe 48 of the first adsorption tower 33 through having clamped open and close valve 46 is communicated with vavuum pump 49.By driving vavuum pump 49, suction function is in the first adsorption tower 33 inside, and the gasoline vapour that is adsorbed material 35 absorption is attracted by vavuum pump 49, carries out the desorb of adsorbent.
If narrate in more detail desorb in the first adsorption tower 33 with reference to Fig. 2, then vacuumized by vavuum pump 49 by the gases that drive in vavuum pump 49, the first adsorption towers 33.Here, because open and close valve 38 is open, so the air that has been limited amount by throttling element 41 flows in the first adsorption tower 33 that is vacuumized by vavuum pump 49 from air intake duct 40.Its result is, is negative pressure in the first adsorption tower 33, for example-negative pressure about 30KPa, also attracted by vavuum pump 49 by the gasoline vapour of adsorbents 35 absorption in the first adsorption tower 33.
The gasoline vapour of discharging from vavuum pump passes through circulation pipe 48A, junction of two streams B1, compression pump 19, recovery tube 15, is cooled and condensation at condensate tank(trap) 20.In addition, because at recovery tube 15 check valve 18 is set, so gasoline vapour does not flow out to atmosphere from the opening 17 of filler nozzle 8.
In addition, in order to make the first adsorption tower 33 that has carried out desorption step carry out absorption process, carried out the second adsorption tower 34 of absorption process and carried out desorption step, in Fig. 2, as long as open open and close valve 31,39,42,47 is closed open and close valve 32,38,43,46 and is got final product.
When the switching of the adsorption/desorption that carries out the first adsorption tower 33 shown in Figure 4 and the second adsorption tower 34, open and close valve 31,32,38,39,42,43,46 among the step ST4,47 aggregate-values at the volume read-out of being obtained by step ST2 are (step ST3 is yes) in the situation more than the threshold value, the switching that can instantaneously open and close.
But if the open and-shut mode of instantaneous switching open and close valve, then malleation and negative pressure act on this open and close valve simultaneously, have the situation of opening effectively or closing of being difficult to.For example, switching to adsorption tower 34 in the situation of absorption process from desorption step, if instantaneous switching open and close valve 31,32,38,39,42,43,46,47 switching, then for example in open and close valve 47, there is negative pressure from vavuum pump 49 sides (for example-about 30KPa) and acts on the possibility that the adsorption tower 34 interior malleations from compression pump 19 (for example 250KPa) act on simultaneously.
Like this, if malleation and negative pressure act on open and close valve 47 simultaneously, the situation that then exists the open and close valve 47 that should close not close fully.
In order to make malleation and negative pressure not act on simultaneously open and close valve, in the illustrated embodiment, when carrying out the switching of absorption process and desorption step, the not instantaneous switching of carrying out open and close valve is switched, but the control shown in the flow chart of execution graph 5.
With reference to Fig. 5, open and close valve 31,32,38,39,42,43,46,47 switching are described.
Control shown in the flow chart of Fig. 5 is in the step ST4 of Fig. 4, and the first adsorption tower 33 is switched to desorption step from absorption process, and the second adsorption tower 34 is switched to from desorption step that stage of absorption process implements.Therefore, in Fig. 5, at first in step ST21, determine whether to carry out the state of the switching among the step ST4 of Fig. 4.
If the first adsorption tower 33 is switched to desorption step from absorption process, and, the second adsorption tower 34 is switched to the stage (step ST21 is yes) of absorption process from desorption step, then all open and close valves 31,32,38,39,42,43,46,47 are opened, simultaneously, the timing (step ST22) of beginning timer TM (with reference to Fig. 3).
Here, the timing carried out of timer TM for all open and close valves 31,32,38,39,42,43,46,47 only open certain hour (for example 2 seconds) carry out.Therefore, in step ST23, whether judgement is this certain hour (2 second) by the time that timer TM carries out timing.
Carried out the time of timing by timer TM, in other words, if all open and close valves 31,32,38,39,42,43,46,47 times of being opened are only passed through certain hour (two seconds) (step ST23 is yes), then close open and close valve 31,39,42,47, open open and close valve 32,38,43,46 (step ST24).
Accordingly, the first adsorption tower 33 can be carried out desorption step, and the second adsorption tower 34 can be carried out absorption process.
If the open and close controlling of step ST24 finishes, then turn back to step ST21 (step ST25).In step ST21, step ST21 carries out no loop, until in the control of Fig. 4 execution in step ST4, that is, until sorption and desorption is switched.
In control shown in Figure 5, by in step ST22, all open and close valves 31,32,38,39,42,43,46,47 are only opened certain hour (for example 2 seconds), make the guard system that comprises the first adsorption tower 33 even with the pressure of the guard system that comprises the second adsorption tower 34.
Under the uniform state of pressure of the guard system that comprises the first adsorption tower 33 and the guard system that comprises the second adsorption tower 34, for example, the first adsorption tower 33 can be carried out desorption step, even the second adsorption tower 34 opens and closes the open and close valve that wish is carried out absorption process, do not exist malleation and negative pressure to act on simultaneously open and close valve 31,32,38,39,42,43,46,47 situation yet, can be smooth and easy and carry out effectively the opening and closing operations of open and close valve, can improve the reliability of open and close valve open and close controlling.
Here, if the open and-shut mode of instantaneous switching open and close valve, then (malleation and negative pressure act on open and close valve simultaneously, and the open and close controlling of open and close valve does not have smooth and easy carrying out in the problems referred to above, become the problem of the state that lacks reliability) the basis on, also have the possibility that produces following such infringement.
As mentioned above, be switched to desorption step at the first adsorption tower 33 from absorption process, and, the second adsorption tower 34 is switched in the situation of absorption process from desorption step, if in the first adsorption tower 33 that has fully adsorbed gasoline vapour, then attract a large amount of gasoline vapours by vavuum pump 49 from the adsorbents 35 in the first adsorption tower 33 from the negative pressure snap of vavuum pump 49.Then, the gasoline vapour that is attracted is discharged from the state that is compressed by vavuum pump 49, collaborates at recovery tube 15 through circulation pipe 48A, junction of two streams B1.
That is, if the open and-shut mode of instantaneous switching open and close valve then after just switching, is supplied with to the attraction side of compression pump 19 from the high concentration of vavuum pump 49 discharges and a large amount of gasoline vapours.
If produced such situation, then attract and the amount of the gasoline vapour carried to condensate tank(trap) 20 reduces from the compressed pumps 19 of the opening 17 of filler nozzle 8.The possibility that perhaps also exists the high concentration of discharging from vavuum pump 49 and a large amount of gasoline vapour to flow backwards to opening 17 sides of filler nozzle 8.
For this infringement, in the illustrated embodiment, come corresponding by the control of carrying out as shown in Figure 6.
Control shown in the flow chart of Fig. 6 is in the step ST4 of Fig. 4, and the first adsorption tower 33 is switched to desorption step from absorption process, and the second adsorption tower 34 is switched to from desorption step that stage of absorption process implements.
Therefore, even in Fig. 6, also be at first in step ST26, similarly determine whether to carry out the state of the switching among the step ST4 of Fig. 4 with the control of Fig. 5.
If the first adsorption tower 33 is switched to desorption step from absorption process, and the second adsorption tower 34 is switched to stage (step ST26 is yes) of absorption process from desorption step, then stops vavuum pump 49, simultaneously, the timing (step ST27) of beginning timer TM.
In step ST28, judge namely, whether the time that vavuum pump 49 stops to have passed through certain hour (for example 12 seconds) by the time of timer TM timing.If through certain hour (12 second) (step ST28 is yes), then begin the driving of vavuum pump 49, simultaneously, replacement timer TM (step ST29).
Then, turn back to step ST26.If turn back to step ST26, then step ST26 carries out no loop, until in the control of Fig. 4 execution in step ST4, that is, until sorption and desorption is switched.
In control shown in Figure 6, be switched to desorption step from the first adsorption tower 33 from absorption process, and, the second adsorption tower 34 is from the moment that desorption step is switched to absorption process, vavuum pump 49 is only stopped certain hour (for example 12 seconds), during this period, drive compression pump 19 only.
Here, because during process certain hour (12 second), because the negative pressure of the attraction side of compression pump 19, or gasoline vapour to a certain degree is from 33 desorbs of the first adsorption tower, so, through behind the certain hour, even vavuum pump 49 drives, there is not the situation of discharging high concentrations and a large amount of gasoline vapour from vavuum pump 49 yet.
Like this, by carrying out control shown in Figure 6, attract and the amount of the gasoline vapour carried to condensate tank(trap) 20 reduces such infringement, the high concentration of discharging from vavuum pump 49 and a large amount of gasoline vapour have obtained preventing to the such infringement of flowing backwards of opening 17 sides of filler nozzle 8 from the opening 17 compressed pumps 19 of filler nozzle 8.
Then, also with reference to Fig. 7, the control of the fault that detects cooler 23 is described.
In Fig. 7, judge at first whether the power supply of cooler 23 connects (step ST31), if power connection (step ST31 is yes) then reclaims control part 14 and obtains outer temperature degree signal (step ST32) from temperature sensor 29.
Then, in step ST33, reclaim control part 14 according to the outer temperature degree signal of input, the cooling fluid 22 of setting in the condensate tank(trap) 20 is cooled to the following time of uniform temperature.If this time for example outer temperature degree be 30 ℃, then be set 60 minutes, if outer temperature degree is 20 ℃, then be set 30 minutes.Meanwhile, in step ST33, the timing that beginning timer TM carries out.
In step S34, judge the time that cooling fluid 22 is cooled, that is, whether only passed through setting-up time by the time of timer TM timing.If the time that cooling fluid 22 is cooled has reached setting-up time (step ST34 is yes), then to reclaiming the liquid temperature signal (step ST35) of control part 14 inputs by the cooling fluid 22 of temperature sensor 28 meterings.
Then, in step ST36, judge that the metering result (liquid temperature of cooling fluid 22) of temperature sensor 28 is whether below uniform temperature (threshold value).If the liquid temperature of cooling fluid 22 is (step ST36 is yes) below threshold value, then be judged as cooler 23 by driven, enter step ST37.
In step ST37, judge that whether power supply is OFF, if power supply is not cut off (step ST37 is no), then returns step ST35.On the other hand, if power supply is cut off (step ST37 is yes), then finishing control.
In step ST36, even beginning from power connection through certain hour, cooling fluid 22 does not reach in the following situation of uniform temperature (step ST36 is no) yet, be judged as produced at cooling system etc. unusual, stop cooler 23, make alarm 52 actions, inform unusual (the step ST38) of cooling system.
Here, even cooling fluid 22 is reduced to uniform temperature (threshold value) following (step ST36 is yes), during step ST37 carries out no loop, the liquid temperature of cooling fluid 22 is warmed up in the above situation of threshold value (step ST36 is no), stop cooler 23, make alarm 52 actions (step ST38).
According to the control of Fig. 7, because unusually being reported of cooling system, so, by this is carried out correspondence unusually, can prevent gasoline vapour not in condensate tank(trap) 20 condensations or liquefaction but flow into adsorption tower 33,34 such infringements.Its result is, can prevent that the adsorbance in the adsorption tower 33,34 from increasing unusually, and the stage adsorbent before the switching of carrying out adsorption/desorption is saturated, the state of affairs that gasoline vapour is discharged from blast pipe 44 to atmosphere.
Then, with reference to Fig. 8, to when reclaiming gasoline vapour, the unusual control that detects in the system that comprises the adsorption tower (for example the first adsorption tower 33) of carrying out absorption process describes.
In Fig. 8, judge whether recovery control part 14 is transfused to content and is the signal in refueling, in other words, in whether refueling (step ST41).If receiving content is the signal (step ST41 is yes) in refueling, then the drive compression pump 19, simultaneously, and the timing (step ST42) that beginning timer TM carries out.
Then, by timer TM, judge whether that after having driven compression pump 19 pressure that has passed through in recovery tube 15, gas-liquid separation chamber 21, snorkel 30, the adsorption tower 33 that is in absorption process, the blast pipe 44 is considered to stable certain hour (for example 10 seconds) (step ST43).
If after having driven compression pump 19, passed through certain hour (for example 10 seconds) (step ST43 is yes), then represent the metering result's of pressure sensors 50 pressure signal (step ST44) to 14 inputs of recovery control part.
Then, in step ST45, judge by the pressure of pressure sensor 50 meterings whether in certain limit, for example 150KPa~250KPa.
If (150KPa~250KPa) (step ST45 is yes), the pressure that then is judged as in the system that comprises the first adsorption tower 33 is normal with interior in certain limit by the pressure of pressure sensor 50 metering.Then, return step ST41, repeatedly the control of Fig. 8.
On the other hand, in step ST45, exceed at the pressure by pressure sensor 50 metering in the situation of certain limit (step ST45 is no), if the pressure lower than 150KPa for example, be judged as then that the eyelet that is in the fault that produces compression pump 19, recovery tube 15 blocks, other unusual, comprise the state that the pressure in the system of the first adsorption tower 33 does not boost.On the other hand, if be the pressure higher than 250KPa by the pressure of pressure sensor 50 metering, then be judged as because the eyelet obstruction of adsorption tower 33 or blast pipe 44 etc., comprise that the pressure anomaly in the system of the first adsorption tower 33 rises.
Even in either case, all stop compression pump 19, report unusually (step ST46) by alarm 52.
Then, with reference to Fig. 9, the unusual control that detection is clamped in the system of the adsorption tower (for example adsorption tower 34) of carrying out desorption step describes.
In Fig. 9, reclaim control part 14 and judge whether vavuum pump 49 drives (step ST51), if vavuum pump 49 drives (step ST51 is yes), then begin the timing (step ST52) that timer TM carries out.
Here, timer TM is in order to judge whether that after vavuum pump 49 drives the pressure that has passed through in air intake duct 40, the adsorption tower 34 of carrying out desorption step, the circulation pipe 48 is considered to stable certain hour (for example 10 seconds) and carries out timing.
In step ST53, whether judgement has passed through above-mentioned certain hour (for example 10 seconds) by the time of timer TM timing, if passed through certain hour (10 second) (step ST53 is yes), then to reclaiming the control part 14 inputs pressure signal (step ST54) corresponding with the pressure that is measured by pressure sensor 51.
In step ST55, judge by the pressure of pressure sensor 51 meterings whether certain limit (for example-10KPa~-50KPa) in.If be numerical value (step ST55 be yes) in the certain limit by the pressure of pressure sensor 51 metering, the system that then is judged as the adsorption tower 34 that clamps the execution desorption step is normal.Then, return step ST51, repeatedly the control of Fig. 9.
In step ST55, if by the pressure of pressure sensor 51 metering exceed certain limit (for example-10KPa~-50KPa) (step ST55 is no), if the low pressure of ratio-50KPa for example, then be judged as because the eyelet obstruction of air intake duct 40 or adsorption tower 33 etc. comprise that the system of adsorption tower 34 is reduced pressure unusually.
On the other hand, if be the high pressure of ratio-10KPa by the pressure of pressure sensor 51 metering, then be judged as and be in owing to the fault of vavuum pump 49 etc., comprise the state that the system of adsorption tower 34 can not reduce pressure.
Even in either case, all stop vavuum pump 49, report unusually (step ST56) by alarm 52.
In the illustrated embodiment, can be that the gasoline vapour of a fuel charger 3 is processed by a vapor recovery unit 13, also can be the gasoline vapour of many fuel chargers 3 is processed by a vapor recovery unit 13.
In the situation that the steam of many fuel chargers 3 is processed by a vapor recovery unit 13, be necessary to carry out the transmitting-receiving of signal by the refueling control section 11 of each fuel charger 3 and the recovery control part 14 of vapor recovery unit 13, control accordingly the driving of compression pump 19 with the number of units of fuel charger 3 in refueling.Here, can be by easily driving control with the not shown inverter motor drive compression pump 19 that goes out.
Mainly with reference to Figure 10, the control of the driving of the compression pump 19 of the situation that the steam of many fuel chargers 3 is processed with a vapor recovery unit 13 describes.
In Figure 10, in step ST61, the recovery control part 14 of vapor recovery unit 13 receives that from the refueling control section 11 of each fuel charger 3 denoting contents is the signal the oiling.Then, judge whether reclaim control part 14 only receives that from a fuel charger 3 denoting contents is the signal (step ST62) the oiling.
In step ST62, only receiving from a fuel charger 3 that denoting contents is in the situation of the signal refueling (step ST62 is yes), with common ability drive compression pump 19 (step ST63).
On the other hand, receiving that from many fuel chargers 3 denoting contents is in the situation of the signal refueling (step ST62 is no, and step ST64 is yes), high-speed driving compression pump 19 (step ST65).
In the situation that from any fuel charger 3 input contents is not the signal the oiling (step ST62 is no, and step ST64 is no), return step ST61.
Here, in the situation with the not shown inverter motor drive compression pump 19 that goes out, if in step ST63, with common ability drive compression pump 19, then for example with the frequency drives inverter motor of 50Hz.
On the other hand, if in step ST65, high-speed driving compression pump 19 then for example drives inverter motor with 70Hz.
Like this, because the drive frequency variations of inverter motor, in step ST63 and step ST65, the ability of compression pump 19 is different.
Like this, in the situation that the gasoline vapour of situation that the gasoline vapour of a fuel charger 3 is processed by a vapor recovery unit 13 and Duo Tai fuel charger 3 is processed by a vapor recovery unit 13, by switching the output (perhaps ability) of compression pump 19, can effectively be recovered in the gasoline vapour of the fuel tank outflow of the automobile that never illustrates in the oiling.
Such as Figure 11, shown in Figure 12, refueling device 3A, 3B can refuel oil and plant different gasoline, that is, also there are two kinds of the steams of the steam of regular gasoline and high-knock rating gasoline in regular gasoline and high-knock rating gasoline, the gasoline vapour that the fuel tank of the automobile that never illustrates produces.
In Figure 11, Figure 12, symbol 1R represents the regular gasoline oil storage tank, and symbol 1H represents the high-knock rating gasoline oil storage tank.
In the illustrated embodiment, it can be following structure, namely, as shown in figure 11, making the steam of regular gasoline and the steam of high-knock rating gasoline also is to be reclaimed by single vapor recovery unit 13, the gasoline vapour that reclaims is at recovery system RR, turns back to regular gasoline oil storage tank 1R or from the regular gasoline fuel loading system of oil storage tank 1R.
Even this is because make the steam of high-knock rating gasoline turn back to the supply source (oil storage tank 1 or regular gasoline fuel loading system) of regular gasoline, also can not produce the problem of pollution.
But, also can as shown in figure 12, the vapor recovery unit 13R of regular gasoline special use and the vapor recovery unit 13H of high-knock rating gasoline special use be set.
In Figure 12, the recovery system RR of the vapor recovery unit 13R of regular gasoline special use turns back to regular gasoline oil storage tank 1R or from the regular gasoline fuel loading system of oil storage tank 1R, and the recovery system RH of the vapor recovery unit 13H of high-knock rating gasoline special use turns back to high-knock rating gasoline oil storage tank 1H or from the high-knock rating gasoline fuel loading system of oil storage tank 1H.
The illustrated embodiment of the vapor recovery unit 13 of Figure 11, Figure 12, other structure of 13R, 13H and action effect and Fig. 1~Figure 10 is identical.
Illustrated embodiment is illustration eventually, is not that purport is the record that limits technical scope of the present invention.
Claims (5)
1. vapor recovery unit, it is characterized in that, possess fuel loading system and gasoline vapour recovery system, fuel loading system possesses an end and is connected to oil storage tank, the other end is connected to the oil filling pipe of refueling hose and is installed in gasoline pump and the flowmeter of this oil filling pipe, the gasoline vapour recovery system possesses via the first pump and near the end condensing unit that the steam recurrent canal of opening is connected filler nozzle and adsorption-desorption device, condensing unit has steam and gasoline vapour condensation and the function of removing, the adsorption-desorption device is arranged on the downstream of condensing unit, have first and second adsorption towers of having filled adsorbent in inside, clamped the second pump in its downstream, this vapor recovery unit possesses control device, this control device has according to the metering signal from flowmeter, when the side's adsorption tower in the first and second adsorption towers carries out the absorption process of adsorbed gasoline steam, the opposing party's adsorption tower carries out adsorbent is carried out the desorption step of desorb, switches the function of adsorption/desorption with this
Above-mentioned control device has to be carried out and will be connected to the first or second adsorption tower via the gas-liquid separation chamber that condensing unit is connected with described steam recurrent canal, gasoline vapour is adsorbed onto the absorption process of the adsorbent in the adsorption tower and the first or second adsorption tower is connected to described the second pump, when desorb is adsorbed the switching of desorption step of gasoline vapour of agent absorption, with be installed in pipe that adsorption tower is connected on open and close valve all open, through behind the certain hour, open and close valve is carried out the function of open and close controlling.
2. vapor recovery unit as claimed in claim 1, it is characterized in that, above-mentioned control device has to be carried out and will be connected to the first or second adsorption tower via the gas-liquid separation chamber that condensing unit is connected with described steam recurrent canal, gasoline vapour is adsorbed onto the absorption process of the adsorbent in the adsorption tower and the first or second adsorption tower is connected to described the second pump, when desorb is adsorbed the switching of desorption step of gasoline vapour of agent absorption, make the second pump stop certain hour, after making the described certain hour that described the second pump stops, driving the function of the second pump.
3. vapor recovery unit as claimed in claim 1, it is characterized in that, be connected with an end of snorkel at described adsorption tower, the other end of this snorkel is connected in described gas-liquid separation chamber, be connected with an end of circulation pipe at described adsorption tower, the other end of this circulation pipe is connected in described steam recurrent canal, at described snorkel and described circulation pipe pressure sensor is set, above-mentioned control device has at the pressure by pressure sensor metering stop described first and the function of the second pump in the situation beyond the certain limit.
4. vapor recovery unit as claimed in claim 1, it is characterized in that, the temperature sensor and the temperature sensor of measuring outer temperature of the temperature of the cooling refrigeration agent of measuring above-mentioned condensing unit are set, above-mentioned control device has the metering result according to the temperature sensor of measuring outer temperature, determine the necessary time of cooling of cooling refrigeration agent, if the temperature through the cooling refrigeration agent after this necessary time is the temperature higher than threshold value, then stop the function of the cooling device that agent is cooled off to cooling refrigeration.
5. vapor recovery unit as claimed in claim 1 is characterized in that, many fuel chargers are set, and above-mentioned control device has the number of units according to the fuel charger that refuels, and controls the function of the ability of above-mentioned the first pump.
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- 2009-07-21 TW TW098124555A patent/TWI488681B/en not_active IP Right Cessation
- 2009-08-07 KR KR1020090072604A patent/KR101130665B1/en active IP Right Grant
- 2009-10-20 CN CN2009101794816A patent/CN101723300B/en not_active Expired - Fee Related
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2010
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Also Published As
Publication number | Publication date |
---|---|
KR101130665B1 (en) | 2012-04-02 |
HK1143795A1 (en) | 2011-01-14 |
TWI488681B (en) | 2015-06-21 |
JP2010094640A (en) | 2010-04-30 |
JP4772848B2 (en) | 2011-09-14 |
CN101723300A (en) | 2010-06-09 |
TW201016299A (en) | 2010-05-01 |
KR20100044083A (en) | 2010-04-29 |
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