CN113816328B - Oiling gun and oiling machine with vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station - Google Patents
Oiling gun and oiling machine with vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station Download PDFInfo
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- CN113816328B CN113816328B CN202010562078.8A CN202010562078A CN113816328B CN 113816328 B CN113816328 B CN 113816328B CN 202010562078 A CN202010562078 A CN 202010562078A CN 113816328 B CN113816328 B CN 113816328B
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- 238000011084 recovery Methods 0.000 title claims abstract description 126
- 239000000446 fuel Substances 0.000 claims abstract description 92
- 230000006698 induction Effects 0.000 claims abstract description 24
- 239000002828 fuel tank Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 182
- 239000002737 fuel gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 239000012528 membrane Substances 0.000 description 8
- 239000000945 filler Substances 0.000 description 5
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
- B67D7/06—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention relates to the technical field of fuel guns, and discloses a fuel gun and a fuel dispenser taking into account a vehicle-mounted oil gas recovery system and a secondary oil gas recovery system of a gas station, wherein the fuel gun comprises a vehicle-mounted oil gas recovery induction valve, and a first valve part and a second valve part are positioned at two opposite radial sides of a valve seat; the first valve part defines a first valve cavity and comprises a first diaphragm and a first valve part spring connected with the first diaphragm and the valve seat; the second valve part defines a second valve cavity, a second diaphragm and a second valve part spring connected with the second diaphragm and the valve seat; the valve seat is provided with a first valve seat through hole, a throttling through hole and a second valve seat through hole, and a valve seat air passage is arranged in the valve seat, the first valve seat through hole and the throttling through hole are respectively communicated with the valve seat air passage and the first valve cavity, the second valve seat through hole is communicated with the valve seat air passage and the second valve cavity, and the first valve seat through hole and the second valve seat through hole are respectively blocked by the first diaphragm and the second diaphragm; a front air passage and a rear air passage are formed in the oil gun, the front end of the first valve cavity is communicated with the front air passage, and the rear end of the second valve cavity is communicated with the rear air passage.
Description
Technical Field
The invention relates to the technical field of oiling guns, in particular to an oiling gun and an oiling machine with a vehicle-mounted oil gas recovery system and a gas station secondary oil gas recovery system.
Background
The GB18352.6-2016 light automobile pollutant emission limit and measurement method, namely national six standards, is issued in the year 2016 12, and in order to meet the standard requirements, the vehicle-mounted oil and gas recovery (ORVR) system of the domestic sales vehicle needs to be upgraded from the year 2020. The oil gas recovery efficiency of the vehicle-mounted oil gas recovery system is up to more than 98%, and once the vehicle-mounted oil gas recovery system is popularized on a large scale, secondary oil gas recovery equipment is replaced.
However, most of the current domestic gas stations are secondary oil-gas recovery systems which are arranged in the past, the secondary oil-gas recovery systems mainly comprise oil-gas recovery type oil filling guns, coaxial rubber pipes, oil-gas separators, oil-gas recovery vacuum pumps and other devices, and the working principle of the secondary oil-gas recovery system is that oil gas overflowed from an oil tank port in the oil filling process is directly pumped back to a buried oil tank through the oil-gas recovery vacuum pumps.
The vehicle-mounted oil gas recovery system is characterized in that an automobile oil tank is transformed, so that a liquid seal is formed in the oiling process, and oil gas enters the vehicle-mounted oil gas recovery activated carbon tank under the action of pressure to prevent the oil gas from being discharged into the atmosphere from an oil tank port.
The existing secondary oil gas recovery system is replaced to the vehicle-mounted oil gas recovery system, so that the existing secondary oil gas recovery system is not a first-time thing, gradual popularization is needed, the popularization process can be as long as several years or even decades, and the number of automobiles for installing the vehicle-mounted oil gas recovery system in the future can rise year by year along with the promotion of the national sixth standard, so that the existing vehicle-mounted oil gas recovery system and the traditional secondary oil gas recovery system are coexisted necessarily for a long time, and even two technologies are probably coexisted in the future. However, the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system have certain differences in design and operation parameters, so that the oil gas recovery type oiling gun used in the market at present can only keep a fixed gas-liquid ratio in the oiling process, certain incompatibility can occur when the oil gas recovery type oiling gun is used for oiling an automobile of the vehicle-mounted oil gas recovery system, and the problems include that the oil gas recovery vacuum pump can not pump oil gas in the oiling process to cause excessive pressure and stop, or excessive air is pumped back to an underground oil storage tank, so that the emission of a PV valve is caused.
Disclosure of Invention
The invention aims to provide a fuel dispenser with a vehicle-mounted oil gas recovery system and a secondary oil gas recovery system of a gas station and the fuel dispenser with the fuel dispenser.
In order to achieve the above object, the invention provides a fuel truck which gives consideration to both a vehicle-mounted fuel gas recovery system and a secondary fuel gas recovery system of a gas station, comprising a fuel truck body and a vehicle-mounted fuel gas recovery induction valve, wherein the vehicle-mounted fuel gas recovery induction valve is arranged in the fuel truck body and comprises a valve seat, a first valve part and a second valve part, and the first valve part and the second valve part are positioned at two opposite radial sides of the valve seat; the first valve part comprises a first valve cover arranged on the valve seat so as to define a first valve cavity between the valve seat and the first valve cover, and also comprises a first diaphragm positioned between the valve seat and the first valve cover and a first valve part spring with two ends respectively connected with the first diaphragm and the valve seat; the second valve part comprises a second valve cover arranged on the valve seat so as to define a second valve cavity between the valve seat and the second valve cover, and a second diaphragm arranged between the valve seat and the second valve cover and a second valve part spring with two ends respectively connected with the second diaphragm and the valve seat; the valve seat comprises a valve seat shell and a valve seat air passage formed in the valve seat shell, a first valve seat through hole, a throttling through hole and a second valve seat through hole are formed in the valve seat shell, the first valve seat through hole and the throttling through hole are respectively communicated with the valve seat air passage and the first valve cavity, the second valve seat through hole is communicated with the valve seat air passage and the second valve cavity, and the first diaphragm and the second diaphragm can respectively block the first valve seat through hole and the second valve seat through hole when being subjected to enough pressure; the oil gun is characterized in that a front air passage and a rear air passage are formed in the oil gun, the front end of the first valve cavity is communicated with the front air passage, and the rear end of the second valve cavity is communicated with the rear air passage.
Preferably, the oil gun further comprises an oil gun head and a gas collecting cover, the oil gun head is connected to the front end of the oil gun body, the gas collecting cover is sleeved on the oil gun head, the rear end of the gas collecting cover is connected to the oil gun body, the vehicle-mounted oil gas recovery induction valve is arranged at the outlet of the oil gun body, a gas collecting cover gas circuit is formed in the gas collecting cover, an oil gun body gas circuit is formed in the oil gun body, the front gas circuit is the gas collecting cover gas circuit, and the rear gas circuit is the oil gun body gas circuit.
Preferably, an axially extending cylindrical passage is formed inside the valve seat housing, the valve seat comprising a valve seat core coaxially disposed within the cylindrical passage with the cylindrical passage, the valve seat core having a cylindrical outer profile and an outer diameter less than an inner diameter of the cylindrical passage to form an annular valve seat gas passage between the cylindrical passage and the valve seat core.
Preferably, the first valve seat through hole is directed toward the center of the first diaphragm, the second valve seat through hole is directed toward the center of the second diaphragm, the throttle through hole is directed toward the edge of the first diaphragm and the inner diameter of the throttle through hole is smaller than the inner diameter of the first valve seat through hole.
Preferably, the gas path of the gun body is provided with a gas-liquid ratio fine tuning screw for adjusting the gas flow in the gas path passing through the gun body.
Preferably, the gas collecting hood comprises a corrugated pipe section positioned at the front side, and the corrugated pipe section is provided with a gas supplementing hole so as to connect the outside with the gas path of the gas collecting hood.
Preferably, the nozzle tip is formed with a gun hanger catch corresponding to the front end opening of the gas-collecting hood, the gun hanger catch is formed as a projection protruding radially from the outer wall of the nozzle tip, and the projection extends along the nozzle tip circumference or is formed with a plurality of projections along the nozzle tip circumference.
Preferably, a fuel tank gun body oil way and an oil pressure cavity which are mutually connected are further formed in the fuel tank gun body, a flange is formed between the fuel tank gun body oil way and the oil pressure cavity, the fuel tank gun further comprises a main valve assembly and a fuel tank gun stop handle, the main valve assembly comprises a shaft sleeve, a self-control shaft, a valve core assembly and a valve core spring, the shaft sleeve is sleeved on the self-control shaft and fixedly arranged, the front end of the valve core assembly is connected with the rear end of the self-control shaft, the rear end of the valve core assembly abuts against the valve core spring, the front end of the valve core assembly abuts against the flange under the action of the valve core spring force so as to cut off the communication between the fuel tank gun body oil way and the oil pressure cavity, and the fuel tank gun stop handle is connected with the self-control shaft so as to move the self-control shaft along the shaft sleeve; the valve core assembly comprises a small valve core and a large valve core, the large valve core is positioned in front of the small valve core, the front end face of the large valve core can prop against the flange, a through hole is formed in the large valve core, the small valve core can block the through hole, the valve core assembly is arranged in such a way that when the valve core assembly cuts off an oil path and an oil pressure cavity of the oil gun body, the automatic control shaft moves backwards, and the automatic control shaft pushes the small valve core to move backwards for a certain distance and then to contact with the large valve core and push the large valve core to move backwards.
Preferably, the automatic control shaft sequentially comprises a small outer diameter section and a large outer diameter section from the rear end to the front, the rear end of the small outer diameter section penetrates through the through hole on the large valve core to be connected with the small valve core, a bulge is formed on the inner side of the through hole of the large valve core and is not in contact with the small outer diameter section, when the valve core assembly cuts off an oil path and an oil pressure cavity of the oil gun body, the large outer diameter section is positioned in front of the bulge, the automatic control shaft moves backwards for a certain distance, and the large outer diameter section abuts against the bulge.
Preferably, an air pipe is arranged in the gun head of the oil gun so as to limit an air return pipeline in the air pipe, a gun head oil path is limited between a shell of the gun head of the oil gun and the air pipe, and the gas collecting cover gas path is limited between the shell of the gun head of the oil gun and the gas collecting cover; the gas collecting cover gas circuit, the gas pipe and the shell of the nozzle head extend coaxially at the rear end of the nozzle head and the front end of the nozzle body.
Preferably, the gas collecting channel comprises a corrugated pipe section positioned at the front side, a pushing piece is arranged at the rear side of the corrugated pipe section, the fuel gun further comprises a valve core shaft which is arranged in the fuel gun body and can seal the air return pipeline, and the pushing piece is connected with the valve core shaft so as to drive the valve core shaft to move and is arranged to push the valve core shaft to a state of sealing the air return pipeline when the corrugated pipe section is compressed.
Another aspect of the invention provides a fuel dispenser comprising the fuel dispenser that combines a vehicle-mounted fuel recovery system with a station secondary fuel recovery system.
According to the oil gun with the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station, the influence of a vacuum pump on the sensing function of the vehicle-mounted oil gas recovery sensing valve can be avoided through the vehicle-mounted oil gas recovery sensing valve with a two-stage structure, the pressure of an oil tank opening can be sensed sharply through the combined pressure sensing structure of the diaphragm and the spring, the opening degree of the air path is adjusted, the gas-liquid ratio of 1-1.2 can be kept for oil gas recovery when the automobile not assembled with the vehicle-mounted oil gas recovery system is refueled, and the gas-liquid ratio can be reduced to 0.2-0.8 when the automobile assembled with the vehicle-mounted oil gas recovery system is refueled. The oiling gun taking the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station into consideration is used for reforming the oiling machine, and the existing oiling machine can be reformed into the system which is applicable to the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station at the same time only by replacing the oiling gun without reforming other oiling machine parts.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate and explain the invention and are not to be construed as limiting the invention. In the drawings:
FIG. 1 shows a schematic side view of a fuel nozzle that combines a vehicle-mounted fuel recovery system and a secondary fuel recovery system of a fuel station in accordance with one embodiment of the present invention;
FIG. 2 illustrates a cross-sectional view of the fuel nozzle of FIG. 1 taken along line A-A of FIG. 1 for both the on-board fuel recovery system and the secondary fuel recovery system of the fuel station;
FIG. 3 shows a side cross-sectional view of the fuel nozzle of FIG. 1, with both the on-board fuel recovery system and the secondary fuel recovery system of the fuel station;
FIG. 4 shows a cross-sectional view of the fuel nozzle of FIG. 3 taken along line B-B of FIG. 3 for both the on-board fuel recovery system and the secondary fuel recovery system of the fuel station;
FIG. 5 is an enlarged view of the rear half of the fuel nozzle of FIG. 3, taken together with the vehicle-mounted fuel recovery system and the secondary fuel recovery system of the fuel station, with a focus on the main valve assembly portion of the nozzle body.
Description of the reference numerals
1, A gas collecting hood; 2, a vehicle-mounted oil gas recovery induction valve; 3, the gun head of the oiling gun; 4, a gun body of the oil gun; 5, a filler neck; 6 corrugated pipe sections; 7, an air return pipeline; 8 auxiliary valves; 9, oil gun body oil ways; 10 the gas path of the gun body of the oiling gun; 11 a pressureless self-sealing assembly; 12, an automatic control membrane component; a shaft sleeve 13; 14, self-controlling a shaft; 15 gas-collecting hood gas paths; 16 air supplementing holes; 17 gun hanging lock catches; 18 pushing plates; 19 ejector rods; 20 valve spindle; 21 self-controlling shaft springs; a 22-large valve core; 23 small valve cores; 24 spool springs; 25 oil pressure chambers; 26 air pipes; 27 attitude valve; 28 a first through hole; 29 a second through hole; 30 a third through hole; 31 fourth through holes; 32 fifth through holes; 33 roller pins; 34 gas-liquid ratio fine adjustment screw; 35 gun head oil ways; 36 protrusions; 37 small outer diameter sections; 38 large outer diameter sections;
201 valve seat; 202 a first valve portion; 203 a second valve portion; 204 throttling the through hole; 205 a first membrane; 206 a first valve portion spring; 207 a first valve cover; 208 a second diaphragm; 209a second valve portion spring; 210 a second valve cover; 211 valve seat air paths; 212 a first valve seat through bore; 213 second valve seat through hole.
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.
In the present invention, it is to be understood that the terms "facing away", "facing toward", "circumferential", "axial", etc. indicate an orientation or a positional relationship based on that shown in the drawings, and also correspond to an orientation or a positional relationship in actual use; the front and the back are the front direction and the back direction of the oil gun, the gun head of the oil gun is the front direction, and the gun body is the back direction; "inner and outer" refer to inner and outer relative to the contour of the components themselves, and do not indicate that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention provides a fuel gun taking into account a vehicle-mounted fuel gas recovery system and a secondary fuel gas recovery system of a fuel station, which comprises a fuel gun body 4 and a vehicle-mounted fuel gas recovery induction valve 2, wherein the vehicle-mounted fuel gas recovery induction valve 2 is arranged in the fuel gun body 4, the vehicle-mounted fuel gas recovery induction valve 2 comprises a valve seat 201, a first valve part 202 and a second valve part 203, and the first valve part 202 and the second valve part 203 are positioned on two opposite radial sides of the valve seat 201; the first valve part 202 includes a first valve cover 207 mounted on the valve seat 201 to define a first valve cavity between the valve seat 201 and the first valve cover 207, and the first valve part 202 further includes a first diaphragm 205 located between the valve seat 201 and the first valve cover 207 and a first valve part spring 206 having both ends connected to the first diaphragm 205 and the valve seat 201, respectively; the second valve part 203 includes a second valve cover 210 mounted on the valve seat 201 to define a second valve cavity between the valve seat 201 and the second valve cover 210, and the second valve part 203 further includes a second diaphragm 208 located between the valve seat 201 and the second valve cover 210 and a second valve part spring 209 having both ends connected to the second diaphragm 208 and the valve seat 201, respectively; the valve seat 201 comprises a valve seat shell and a valve seat air path 211 formed in the valve seat shell, a first valve seat through hole 212, a throttling through hole 204 and a second valve seat through hole 213 are formed in the valve seat shell, the first valve seat through hole 212 and the throttling through hole 204 are respectively communicated with the valve seat air path 211 and the first valve cavity, the second valve seat through hole 213 is communicated with the valve seat air path 211 and the second valve cavity, and the first diaphragm 205 and the second diaphragm 208 can respectively seal the first valve seat through hole 212 and the second valve seat through hole 213 when being subjected to enough pressure; the oil gun is characterized in that a front air passage and a rear air passage are formed in the oil gun, the front end of the first valve cavity is communicated with the front air passage, and the rear end of the second valve cavity is communicated with the rear air passage.
In the fuel gun which has both the vehicle-mounted fuel gas recovery system and the secondary fuel gas recovery system of the gas station, the vehicle-mounted fuel gas recovery induction valve 2 is a two-stage valve and comprises a first valve part 202 and a second valve part 203. If oil gas overflows from the oil tank port in the process of refueling a vehicle without a vehicle-mounted oil gas recovery system, gas spaces (a first valve cavity and a second valve cavity) of the first valve part 202 and the second valve part 203 are positive pressure, the first valve part 202 and the second valve part 203 are in an open state, namely a first diaphragm 205 in the first valve part 202 approaches or is abutted against a first valve cover 207 under the action of a first valve part spring 206, a second diaphragm 208 in the second valve part 203 approaches or is abutted against a second valve cover 210 under the action of a second valve part spring 209, the first valve seat through hole 212 and the second valve seat through hole 213 are not blocked, recovered oil gas enters the first valve part 202 through a front gas path, reaches a valve seat gas path 211 through the first valve seat through hole 212 and the throttle through hole 204, then enters the second valve cavity of the second valve part 203 through the second valve seat through hole 213, at the moment, the resistance of the whole gas-liquid recovery gas path is smaller, and the gas-liquid ratio is kept at a higher value; if the oil tank port is not overflowed during the process of refueling the vehicle equipped with the vehicle-mounted oil and gas recovery system, the gas space (first valve cavity) of the first valve portion 202 is at a negative pressure, the first diaphragm 205 compresses the first valve portion spring 206 under the action of the negative pressure and completely blocks the first valve seat through hole 212, the oil and gas can only enter the valve seat gas passage 211 through the throttling through hole 204, at this time, the resistance of the oil and gas recovery gas passage is high, the second valve portion 203 is in a half-open state under the influence of the vacuum pumping force, that is, the second diaphragm 208 in the second valve portion 203 is continuously or intermittently close to or is abutted against the second valve seat through hole 213 under the action of the negative pressure, so that the second valve seat through hole 213 is partially or intermittently opened, and the gas-liquid ratio is kept at a low value.
According to the invention, the oiling gun taking into consideration the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station is changed into the oiling gun taking into consideration the vehicle-mounted oil gas recovery induction valve 2 with the two-stage structure, so that the influence of a vacuum pump on the induction function of the vehicle-mounted oil gas recovery induction valve 2 can be avoided, the pressure of an oil tank port can be sensitively induced, the gas-liquid ratio is automatically adjusted to a proper range (which is equivalent to the automatic recognition of the vehicle type and the adjustment to the gas-liquid ratio of the vehicle type), so as to adapt to different vehicle types, and the oiling gun taking into consideration the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station is changed into consideration only by changing the oiling gun without changing other oiling machine parts, so that the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station are simultaneously applicable, the oil gas dispersion caused by the fact that the gas-liquid ratio and the vehicle type are not suitable is avoided, the safety condition in the station is improved, and the physical health of staff is ensured; in addition, the vehicle-mounted oil gas recovery induction valve 2 included in the oil gun is of a pure mechanical structure, and is long in service life and not easy to damage.
Under the general circumstances, through the design, make the nozzle that gives attention to vehicle-mounted oil gas recovery system and filling station secondary oil gas recovery system when refueling for the car that does not assemble vehicle-mounted oil gas recovery system the same as ordinary nozzle, can keep 1-1.2's gas-liquid ratio to carry out the oil gas recovery, when refueling for the car that is equipped with vehicle-mounted oil gas recovery system, gas-liquid ratio can reduce to 0.2-0.8. Wherein in some embodiments, the first valve part spring 206 is set to provide a pressure of between 100Pa and 1000Pa required for maximum deformation, and the second valve part spring 209 is set to provide a pressure of between 1000Pa and 18000Pa required for maximum deformation, so as to adjust the gas-liquid ratio to be in a proper range when adapting to different vehicle types.
Specifically, the fuel dispenser may include a fuel dispenser nozzle head 3 and a gas-collecting cap 1, the fuel dispenser nozzle head 3 is connected to the front end of the fuel dispenser nozzle body 4, and the gas-collecting cap 1 is sleeved on the fuel dispenser nozzle head 3 and the rear end is connected to the fuel dispenser nozzle body 4.
In some embodiments, the first membrane 205 is near the muzzle (front) side of the fuel dispenser, primarily for detecting vacuum at the fuel tank port; the second diaphragm 208 is close to the oil gas recovery vacuum pump (rear) side, and the oil gas recovery vacuum pump is started in the oiling process, so that the vacuum appears in the gas path inside the oiling gun, and the second valve part 203 has a certain air resistance function at the moment, so that the first valve part 202 is prevented from being closed due to the operation of the vacuum pump.
Preferably, the vehicle-mounted oil gas recovery induction valve 2 is arranged at the outlet of the oil gun body 4, a gas collecting hood gas circuit 15 is formed in the gas collecting hood 1, an oil gun body gas circuit 10 is formed in the oil gun body 4, the front gas circuit is the gas collecting hood gas circuit 15, the rear gas circuit is the oil gun body gas circuit 10, and the vehicle-mounted oil gas recovery induction valve 2 is arranged close to the oil gun head 3, so that the pressure induction of the vehicle-mounted oil gas recovery induction valve 2 to the oil tank port is more acute.
Wherein, the peripheral edge of the first diaphragm 205 and the peripheral edge of the second diaphragm 208 are respectively attached to the outer wall of the valve seat 201 facing the first valve cover 207 and the outer wall of the valve seat 201 facing the second valve cover 210.
Further, referring to fig. 3, the valve seat 201 includes a valve seat core coaxially disposed within the cylindrical passage with the cylindrical passage, the valve seat core having a cylindrical outer contour and an outer diameter smaller than an inner diameter of the cylindrical passage to form an annular valve seat air passage 211 between the cylindrical passage and the valve seat core.
Specifically, in the vehicle-mounted oil and gas recovery induction valve 2, the first valve seat through hole 212 is oriented toward the center of the first diaphragm 205, the second valve seat through hole 213 is oriented toward the center of the second diaphragm 208, so that the first valve seat through hole 212 can be better plugged and the second valve seat through hole 213 can be semi-closed under pressure, the throttle through hole 204 is oriented toward the edge of the first diaphragm 205, and the inner diameter of the throttle through hole 204 is smaller than the inner diameter of the first valve seat through hole 212.
Preferably, the gun body gas circuit 10 is provided with a gas-liquid ratio fine adjustment screw 34 for adjusting the flow rate of gas through the gun body gas circuit 10, and the gas-liquid ratio fine adjustment screw 34 can be manually adjusted when needed. In the oiling process, the oil gas recovery vacuum pump enables the oiling machine gas circuit to generate vacuum, oil gas enters the vehicle-mounted oil gas recovery induction valve 2 from the gas collecting hood gas circuit 15 and then enters the oiling gun body gas circuit 10, and the air-liquid ratio fine adjustment screw 34 can control the flow cross section of the oiling gun body gas circuit 10 through the depth of being inserted into the oiling gun body gas circuit 10, so that air resistance is affected, and the air-liquid ratio is adjusted.
As a preferred embodiment, the gas collecting hood 1 includes a bellows section 6 located at the front side, and the bellows section 6 is formed with a gas filling hole 16 to connect the outside and the gas collecting hood gas path 15. The air-filling hole 16 at the corrugated pipe section 6 of the gas collecting hood 1 is used for supplementing air when the oil gas quantity is insufficient in the oil gas recovery process or discharging excessive oil gas in the oil gas recovery process. Taking this embodiment as an example, when the gas-liquid ratio is 1.1, when the vehicle not equipped with the vehicle-mounted oil gas recovery system is refueled, the oil gas overflowed from the oil tank is equal to the refueled volume, and the air return quantity is insufficient at this time, and external air enters the gas collecting hood 1 through the air supply hole 16, so that the problem that the gun jump is caused by the too high vacuum degree of the oil tank port in the refueling process of the vehicle not equipped with the vehicle-mounted oil gas recovery system can be solved, which can result in the closing of the first valve part 202 of the vehicle-mounted oil gas recovery induction valve 2 or the triggering of the automatic control membrane assembly 12 to act as a gun jump; when the gas-liquid ratio is 0.8 and the automobile which is not assembled with the vehicle-mounted oil gas recovery system is refueled, the oil gas overflowed from the oil tank is equal to the refueled volume, the oil gas cannot be recovered through the oil gun, and at the moment, part of the oil gas is discharged to the outside through the air filling hole 16; when the gas-liquid ratio is 0.3, and the automobile equipped with the vehicle-mounted oil gas recovery system is refueled, no oil gas overflows in the oil tank, the air return quantity is insufficient at the moment, external air enters the gas collecting hood 1 through the air supplementing holes 16, and the air supplementing holes 16 can prevent the front end of the vacuum pump from being blocked completely to cause pump blocking damage at the moment.
Further, the nozzle tip 3 is formed with a gun hanger 17 at a position corresponding to the front end opening of the gas collecting hood 1, the gun hanger 17 is formed as a projection protruding radially from the outer wall of the nozzle tip 3, and the projection extends along the circumferential direction of the nozzle tip 3 or a plurality of projections are formed along the circumferential direction of the nozzle tip 3. Therefore, in the oiling process, the gas collecting hood 1 is tightly pressed and sealed with the oil filler, the gun hanging lock 17 is matched with a standard oil tank port, when the gun hanging lock 17 is hung tightly, the gas collecting hood 1 is pressed to act together with the convex blocks so that the oil filler is fixed, an operator does not need to hold the oil filler again manually, and therefore the gun hanging lock 17 avoids the need of holding the gas collecting hood tightly by the hand of an operator in the using process of the oil filler.
In addition, referring to fig. 1, a gun body oil path 9 and an oil pressure cavity 25 which are connected with each other are formed in the gun body 4, a flange is formed between the gun body oil path 9 and the oil pressure cavity 25, the gun further comprises a main valve assembly and a gun stop handle 5, the main valve assembly comprises a shaft sleeve 13, a self-control shaft 14, a valve core assembly and a valve core spring 24, the shaft sleeve 13 is sleeved on the self-control shaft 14 and fixedly arranged, the front end of the valve core assembly is connected with the rear end of the self-control shaft 14, the rear end of the valve core assembly is abutted against the valve core spring 24, the front end of the valve core assembly is abutted against the flange under the action of spring force of the valve core spring 24 to cut off the communication between the gun body oil path 9 and the oil pressure cavity 25, and the gun stop handle 5 is connected with the self-control shaft 14 so as to be capable of moving the self-control shaft 14 along the shaft sleeve 13; preferably, the valve core assembly comprises a small valve core 23 and a large valve core 22, the large valve core 22 is positioned in front of the small valve core 23, the front end face of the large valve core 22 can prop against the flange, a through hole is formed in the large valve core 22, the small valve core 23 can block the through hole, the valve core assembly is arranged in such a way that when the valve core assembly blocks the oil gun body oil way 9 and the oil pressure cavity 25, the self-control shaft 14 moves backwards, and the self-control shaft 14 pushes the small valve core 23 to move backwards for a certain distance and then contacts with the large valve core 22 and pushes the large valve core 22 to move backwards.
In this optimized embodiment, the valve core assembly is designed in a double-valve core mode, the contact part of the self-control shaft 14 and the valve core assembly is set in a two-stage step mode, and when the self-control shaft 14 moves in the rightward direction in fig. 1, the small valve core 23 is pushed up first, and the valve core assembly continues to move for a certain distance, so that the valve core assembly can be contacted with the large valve core 22 and then push up the large valve core 22. When the oiling operation starts, firstly, the oil pump of the oiling machine is started, the pressure in the oil pressure cavity 25 exists, the large valve core 22 abuts against the flange and cuts off the oil gun body oil way 9 and the oil pressure cavity 25, an operator pulls the oiling gun gear handle 5 to apply force to the automatic control shaft 14 to enable the oiling gun gear handle to move backwards along the shaft sleeve 13 (move rightwards in the figure 1), at the moment, the pressure difference on two sides of the small valve core 23 is relatively small, the automatic control shaft 14 moves backwards, the rear end of the automatic control shaft 14 firstly pushes up the small valve core 23, at the moment, the fuel in the oil pressure cavity 25 flows forwards from the gap between the small valve core 23 and the large valve core 22 and the through hole on the large valve core 22 into the oil gun body oil way 9, then the pressure difference on two ends of the large valve core 22 is reduced, and then the automatic control shaft 14 continues to move backwards to push up the large valve core 22, so that the oil gun is more labor-saving.
Further specifically, the self-control shaft 14 includes a small outer diameter section 37 and a large outer diameter section 38 sequentially from the rear end to the front, the rear end of the small outer diameter section 37 is connected to the small valve core 23 through a through hole on the large valve core 22, a protrusion 36 is formed on the inner side of the through hole of the large valve core 22, the protrusion 36 is not in contact with the small outer diameter section 37, when the valve core assembly cuts off the oil gun body oil path 9 and the oil pressure cavity 25, the large outer diameter section 38 is located in front of the protrusion 36, the self-control shaft 14 moves backwards for a certain distance, the large outer diameter section 38 abuts against the protrusion 36, and therefore, when the self-control shaft 14 continues to move backwards, the large valve core 22 can be pushed backwards against the protrusion 36 through the large outer diameter section 38.
In addition, referring to fig. 1and 4, in some embodiments, an air pipe 26 is provided in the nozzle tip 3 to define an air return line 7 in the air pipe 26, a tip oil path 35 is defined between the housing of the nozzle tip 3 and the air pipe 26, and the gas-collecting hood gas path 15 is defined between the housing of the nozzle tip 3 and the gas-collecting hood 1; at the rear end of the nozzle tip 3 and the front end of the nozzle body 4, the gas-collecting hood gas path 15, the gas pipe 26 and the housing of the nozzle tip 3 extend coaxially.
Further, the gas collecting hood 1 is located on the corrugated pipe section 6 at the front side, a pushing member is installed at the rear side, the fuel gun further comprises a valve core shaft 20 which is arranged in the fuel gun body 4 and can seal the air return pipeline 7, and the pushing member is connected to the valve core shaft 20 so as to drive the valve core shaft 20 to move, and is configured to push the valve core shaft 20 to seal the air return pipeline 7 when the corrugated pipe section 6 is compressed. The pushing piece comprises a pushing plate 18 and a push rod 19, the pushing plate 18 is arranged at the corrugated pipe section 6, the pushing plate 18 is connected with the push rod 19, the push rod 19 can drive the valve core shaft 20 to reciprocate, the pushing plate 18 and the push rod 19 can be driven to move backwards when the gas collecting channel 1 is compressed, and at the moment, the push rod 19 pushes the valve core shaft 20 to block the air return pipeline 7.
The return air pipeline 7 can pass through (including): the air pipe 26, the attitude valve 27, the first through hole 28, the second through hole 29, the third through hole 30, the fourth through hole 31, and the fifth through hole 32. The rear end of the air pipe 26 is provided with a posture valve 27 which is connected with the posture valve 27; the tail part of the gun head 3 of the oil gun is provided with an auxiliary valve 8, and the return air pipeline 7 is connected with the auxiliary valve 8 through a first through hole 28; the return air pipeline 7 is controlled by the valve core shaft 20 to be opened or closed; the top of the gun body 4 is provided with a pressureless self-sealing component 11 and a self-control membrane component 12, and the return air pipeline 7 is connected with the self-control membrane component 12 through a fourth through hole 31 and a fifth through hole 32. When the return air pipeline 7 is unobstructed (opened), the oiling gun can normally oiling, and when the return air pipeline 7 is closed, the oiling gun cannot normally oiling.
Wherein, the opening and closing of the third through hole 30 is controlled by the valve core shaft 20, when the gas collecting hood 1 is at the normal position, the valve core shaft 20 closes the air return pipeline 7, and the oil gun cannot refuel; when the gas collecting hood 1 is extruded, the push plate 18 moves backwards, the valve core shaft 20 does not block the return air pipeline 7 any more, the return air pipeline 7 is smooth, and the oil gun can normally refuel.
Wherein, a sealing steel ball is arranged in the attitude valve 27, the valve seat is conical, when the gun mouth of the oil gun is used for normal oil filling, the steel ball leaves the conical surface, the attitude valve 27 is opened, and the air return pipeline 7 is unobstructed; when the gun mouth of the oil gun is filled up, the steel ball enters the conical surface, the gesture valve 27 is closed, the air return pipeline 7 is sealed, vacuum is formed in the air return pipeline 7, the vacuum acts on the self-control membrane component 12 through the fourth through hole 31 and the fifth through hole 32, the self-control membrane overcomes the upward movement of spring pressure, the needle roller 33 is moved out of the clamping groove of the self-control shaft 14, the self-control shaft 14 moves left under the action of the self-control shaft spring 21, the oil way of the oil gun is disconnected, the structure ensures that the oil cannot be filled when the gun mouth of the oil gun is upward, and misoperation of oil filling is prevented.
In addition, the valve seat of the auxiliary valve 8 is of a venturi structure, and when fuel flows through the auxiliary valve 8 in the refueling process, a certain negative pressure is generated, and at the moment, gas at the nozzle of the refueling gun enters the auxiliary valve 8 along the return air pipeline 7 through the gas pipe 26, the attitude valve 27, the second through hole 29, the third through hole 30 and the first through hole 28.
Another aspect of the present invention provides a fuel dispenser comprising a fuel dispenser according to the present invention that is compatible with both a vehicle-mounted fuel recovery system and a secondary fuel recovery system of a gas station.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. The technical solution of the invention can be subjected to a plurality of simple variants within the scope of the technical idea of the invention. Including the various specific features being combined in any suitable manner. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (12)
1. The utility model provides a take account of on-vehicle oil gas recovery system and gas station secondary oil gas recovery system's nozzle, includes nozzle body (4) and on-vehicle oil gas recovery induction valve (2), on-vehicle oil gas recovery induction valve (2) set up in nozzle body (4), its characterized in that, on-vehicle oil gas recovery induction valve (2) include disk seat (201), first valve portion (202) and second valve portion (203) are located the diametrically opposite both sides of disk seat (201); the first valve part (202) comprises a first valve cover (207) mounted on the valve seat (201) so as to define a first valve cavity between the valve seat (201) and the first valve cover (207), the first valve part (202) further comprises a first diaphragm (205) positioned between the valve seat (201) and the first valve cover (207) and a first valve part spring (206) with two ends respectively connected to the first diaphragm (205) and the valve seat (201); the second valve part (203) comprises a second valve cover (210) mounted on the valve seat (201) to define a second valve cavity between the valve seat (201) and the second valve cover (210), the second valve part (203) further comprises a second diaphragm (208) positioned between the valve seat (201) and the second valve cover (210) and a second valve part spring (209) with two ends respectively connected with the second diaphragm (208) and the valve seat (201); the valve seat (201) comprises a valve seat shell and a valve seat air passage (211) formed in the valve seat shell, a first valve seat through hole (212), a throttling through hole (204) and a second valve seat through hole (213) are formed in the valve seat shell, the first valve seat through hole (212) and the throttling through hole (204) are respectively communicated with the valve seat air passage (211) and the first valve cavity, the second valve seat through hole (213) is communicated with the valve seat air passage (211) and the second valve cavity, and the first diaphragm (205) and the second diaphragm (208) can respectively block the first valve seat through hole (212) and the second valve seat through hole (213) when being subjected to enough pressure; the oil gun is characterized in that a front air passage and a rear air passage are formed in the oil gun, the front end of the first valve cavity is communicated with the front air passage, and the rear end of the second valve cavity is communicated with the rear air passage.
2. The fuel tank gun with the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station according to claim 1, wherein the fuel tank gun further comprises a fuel tank gun head (3) and a gas collecting cover (1), the fuel tank gun head (3) is connected to the front end of the fuel tank gun body (4), the gas collecting cover (1) is sleeved on the fuel tank gun head (3) and the rear end of the gas collecting cover is connected to the fuel tank gun body (4), the vehicle-mounted oil gas recovery induction valve (2) is arranged at the outlet of the fuel tank gun body (4), a gas collecting cover gas circuit (15) is formed in the gas collecting cover (1), a fuel tank gun body gas circuit (10) is formed in the fuel tank gun body (4), the front gas circuit is the gas collecting cover gas circuit (15), and the rear gas circuit is the fuel tank gun body gas circuit (10).
3. The fuel truck of claim 2, wherein the fuel truck body gas circuit (10) is provided with a gas-to-liquid ratio trim screw (34) for adjusting the flow of gas through the fuel truck body gas circuit (10).
4. The fuel gun for both vehicle-mounted oil and gas recovery system and secondary oil and gas recovery system of gas station according to claim 2, wherein the gas collecting hood (1) comprises a corrugated pipe section (6) positioned at the front side, and the corrugated pipe section (6) is provided with a gas filling hole (16) to connect the outside and the gas collecting hood gas path (15).
5. The fuel nozzle of both the vehicle-mounted fuel recovery system and the secondary fuel recovery system of the fuel station as claimed in claim 1, wherein an axially extending cylindrical passage is formed inside the valve seat housing, the valve seat (201) includes a valve seat core coaxially disposed within the cylindrical passage with the cylindrical passage, the valve seat core having a cylindrical outer contour and an outer diameter smaller than an inner diameter of the cylindrical passage to form an annular valve seat air passage (211) between the cylindrical passage and the valve seat core.
6. The fuel nozzle of both the vehicle-mounted oil and gas recovery system and the secondary oil and gas recovery system of the gas station according to claim 1, wherein the first valve seat through hole (212) is oriented toward the center of the first diaphragm (205), the second valve seat through hole (213) is oriented toward the center of the second diaphragm (208), the throttle through hole (204) is oriented toward the edge of the first diaphragm (205) and the inner diameter of the throttle through hole (204) is smaller than the inner diameter of the first valve seat through hole (212).
7. The fuel truck of claim 1, wherein the fuel truck further comprises a fuel truck head (3) and a gas collecting cover (1), the fuel truck head (3) is provided with a gun hanging lock catch (17) at a position corresponding to a front end opening of the gas collecting cover (1), the gun hanging lock catch (17) is formed into a protruding block protruding radially from an outer wall of the fuel truck head (3), and the protruding block extends along the circumference of the fuel truck head (3) or forms a plurality of protruding blocks along the circumference of the fuel truck head (3).
8. The fuel truck of claim 1, wherein a fuel truck body oil path (9) and a fuel pressure cavity (25) which are mutually connected are further formed in the fuel truck body (4), a flange is formed between the fuel truck body oil path (9) and the fuel pressure cavity (25), the fuel truck further comprises a main valve assembly and a fuel truck stop handle (5), the main valve assembly comprises a shaft sleeve (13), a self-control shaft (14), a valve core assembly and a valve core spring (24), the shaft sleeve (13) is sleeved on the self-control shaft (14) and fixedly arranged, the front end of the valve core assembly is connected with the rear end of the self-control shaft (14), the rear end of the valve core assembly is propped against the valve core spring (24), and the front end of the valve core assembly is propped against the flange under the action of the spring force of the valve core spring (24) to block the communication between the fuel truck body oil path (9) and the fuel pressure cavity (25), and the fuel truck stop handle (5) is connected with the self-control shaft (14) so as to be capable of moving along the self-control shaft (14); the valve core assembly comprises a small valve core (23) and a large valve core (22), the large valve core (22) is located in front of the small valve core (23), the front end face of the large valve core (22) can prop against the flange, a through hole is formed in the large valve core (22), the small valve core (23) can block the through hole, the valve core assembly is arranged in such a way that when the valve core assembly blocks an oil gun body oil way (9) and an oil pressure cavity (25), the automatic control shaft (14) moves backwards, and the automatic control shaft (14) pushes the small valve core (23) to move backwards for a certain distance and then to contact with the large valve core (22) and push the large valve core (22) to move backwards.
9. The fuel truck of claim 8, wherein the self-control shaft (14) comprises a small outer diameter section (37) and a large outer diameter section (38) from the rear end to the front in sequence, the rear end of the small outer diameter section (37) penetrates through a through hole in the large valve core (22) to be connected with the small valve core (23), a protrusion (36) is formed on the inner side of the through hole of the large valve core (22), the protrusion (36) is not in contact with the small outer diameter section (37), and when the valve core assembly cuts off the fuel truck body oil way (9) and the oil pressure cavity (25), the large outer diameter section (38) is positioned in front of the protrusion (36), the self-control shaft (14) moves backwards for a certain distance, and the large outer diameter section (38) is propped against the protrusion (36).
10. The fuel tank gun with the vehicle-mounted oil gas recovery system and the secondary oil gas recovery system of the gas station as claimed in claim 1, wherein the fuel tank gun further comprises a fuel tank gun head (3) and a gas collecting cover (1), the fuel tank gun head (3) is connected to the front end of the fuel tank gun body (4), the gas collecting cover (1) is sleeved on the fuel tank gun head (3) and the rear end of the gas collecting cover is connected to the fuel tank gun body (4); an air pipe (26) is arranged in the gun head (3) to limit an air return pipeline (7) in the air pipe (26), a gun head oil path (35) is limited between a shell of the gun head (3) and the air pipe (26), and an air collecting cover air path (15) is limited between the shell of the gun head (3) and the air collecting cover (1); the gas collecting cover gas circuit (15), the gas pipe (26) and the shell of the oil gun head (3) extend coaxially at the rear end of the oil gun head (3) and the front end of the oil gun body (4).
11. The fuel truck of claim 10, wherein the gas collecting hood (1) comprises a bellows section (6) at a front side, the bellows section (6) is provided with a pushing member at a rear side, the fuel truck further comprises a valve spool (20) arranged in the fuel truck body (4) and capable of blocking the return air pipe (7), the pushing member is connected to the valve spool (20) so as to be capable of driving the valve spool (20) to move, and is configured to push the valve spool (20) to a state of blocking the return air pipe (7) when the bellows section (6) is compressed.
12. A fuel dispenser comprising a fuel dispenser according to any one of claims 1 to 11 compatible with a vehicle-mounted fuel recovery system and a secondary fuel recovery system for a gas station.
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| CN202010562078.8A CN113816328B (en) | 2020-06-18 | 2020-06-18 | Oiling gun and oiling machine with vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station |
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| CN202010562078.8A CN113816328B (en) | 2020-06-18 | 2020-06-18 | Oiling gun and oiling machine with vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station |
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| CN116891210B (en) * | 2023-09-04 | 2023-12-01 | 济南弗莱德科技有限公司 | Device for realizing zero emission of oil gas of gas station through secondary oil gas recovery |
| CN118361557A (en) * | 2024-06-20 | 2024-07-19 | 浙江麦得机器有限公司 | ORVR and secondary oil gas recovery compatible oil gun monitoring control valve |
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| CN212532290U (en) * | 2020-06-18 | 2021-02-12 | 中国石油化工股份有限公司 | Oil gun and oiling machine |
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| CN101284640B (en) * | 2007-04-13 | 2012-05-09 | 黄晓东 | Safety, environmental protection, energy conservation and skidded refueling device |
| CN101332769B (en) * | 2008-07-24 | 2011-09-14 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN105000527B (en) * | 2015-07-09 | 2017-08-29 | 郑州永邦环保科技有限公司 | A kind of nozzle with petroleum vapor recovery structure |
| CN204824143U (en) * | 2015-07-09 | 2015-12-02 | 郑州永邦环保科技有限公司 | Nozzle suitable for filling station's secondary and on -vehicle vapor recovery system system |
| CN205118338U (en) * | 2015-10-20 | 2016-03-30 | 郑州永邦环保科技有限公司 | Vapor recovery system system is with vacuum flow control and gas -liquid ratio adjusting valve |
| CN107840301A (en) * | 2017-10-30 | 2018-03-27 | 郑立新 | Without the self-styled petroleum vapor recovery nozzle of pressure |
| CN111039248A (en) * | 2019-12-17 | 2020-04-21 | 欧佩特环保科技(南京)有限公司 | Oil gas recovery nozzle |
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| CN212532290U (en) * | 2020-06-18 | 2021-02-12 | 中国石油化工股份有限公司 | Oil gun and oiling machine |
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Effective date of registration: 20240822 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: China Applicant after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Country or region before: China Applicant before: SINOPEC Research Institute OF SAFETY ENGINEERING |
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