CN109399543B

CN109399543B - Refueling system

Info

Publication number: CN109399543B
Application number: CN201710710307.4A
Authority: CN
Inventors: 陈兆康; 杨永刚; 石为利; 吴春芬; 钟益林
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2020-06-19
Anticipated expiration: 2037-08-18
Also published as: CN109399543A

Abstract

The invention provides a refueling system, which comprises a refueling gun, an oil tank and a refueling pipe, wherein the refueling gun comprises a refueling gun main body and a refueling gun nozzle arranged on the refueling gun main body, the oil tank comprises a fuel tank body, the refueling pipe comprises a refueling pipe body arranged on the fuel tank body, a first sealing cover is movably sleeved on the refueling gun nozzle, a second sealing cover used for sealing a refueling port of the refueling pipe body is hinged on the refueling pipe body, a first elastic part used for resetting the second sealing cover to a closed state is arranged between the second sealing cover and the refueling pipe body, the first sealing cover is connected with the refueling gun nozzle and the refueling pipe body in a sealing manner, and the refueling gun nozzle can push the second sealing cover open by sliding relative to the first; the process that the nozzle of the oil gun stretches into the oil filling pipe body and the process that the nozzle of the oil gun is pulled out after oil filling is finished, the oil filling pipe body is isolated from the external atmosphere, oil gas can not escape from an oil filling port of the oil filling pipe body, oil gas in the oil filling process enters a carbon tank through an oil tank body and an oil gas channel to be filtered, and purified gas is discharged to the external atmosphere again to prevent the oil gas from leaking.

Description

Refueling system

Technical Field

The invention belongs to the technical field of refueling, and particularly relates to a refueling system.

Background

The automobile keeping quantity in China is increasing day by day, and the pollution condition caused by automobiles is also serious day by day. Among the various pollutants of automobiles is an oil-filled emission pollutant. In the process of refueling a common automobile, as fuel oil directly contacts with the outside air, a fuel oil system can discharge Volatile Organic Compounds (VOC) to the atmosphere, and the VOC is a precursor for forming ozone and is harmful to the environment and the body health of people. With the increasing demand of people for environmental protection and the increasing of the emission standard of automobile pollutants in China, the emission pollution in the oil filling process is gradually paid attention to by people. The technical scheme for reducing emission pollution in the oiling process at the present stage mainly comprises the following steps:

1. air pump air extraction formula:

at present, the oil gun in the air pump air suction type scheme widely adopted by a gas station is provided with an air suction hole for collecting oil gas on an oil gun special for oil gas recovery, the air suction hole is connected with an air suction pump through a pipeline inside the oil gun, oil gas released from an oil filling port of an oil filling pipe body is sucked into the air suction hole in the oil filling process, and the oil gas is condensed into liquid fuel oil again through liquefaction treatment to flow into an underground oil tank of the gas station, so that the aim of inhibiting the oil gas from volatilizing into the atmosphere is fulfilled.

Because the structure is limited, the suction hole for collecting oil gas is arranged at the position of the oil gun nozzle close to the root part, and the rubber sealing cover at the root part of the oil gun nozzle is matched, the structure can effectively prevent the oil gas from escaping in the oil filling process, but in the two processes that the oil gun nozzle extends into the oil filling pipe body from the cover body for opening the oil filling pipe body to the oil filling opening until the oil filling opening of the oil filling pipe body is completely covered by the sealing cover and the oil filling gun is pulled out until the oil filling cover is covered after the oil filling is finished, the oil filling hole is far away from the oil filling opening of the oil filling pipe body and the oil filling opening of the oil filling pipe body is opened, and the escaped oil gas.

Moreover, the scheme is that fuel steam is continuously pumped away in the refueling process, so that gas in a fuel system is extremely unsaturated, liquid fuel is promoted to be evaporated into oil gas, and the oil gas is pumped away by an oil gun. The oil and gas pumped away will eventually flow into the underground storage of the service station, which results in a reduced amount of oil actually available to the consumer and a loss of consumer interest.

Secondly, this is an active absorption method requiring the use of an air pump, and requires continuous energy consumption.

2. The general ORVR formula:

the ORVR (onboard Refueling Vapor recovery) system refers to an onboard oil and gas recovery system. Ordinary refueling system is adopted by each automobile manufacturer in China gradually, and this kind of scheme has made the adjustment to fuel system's structure for oil gas can't escape from the oil filler hole department that refuels the body in the refueling process, can only discharge through the inside pipeline that leads to the carbon tank of oil tank, and oil gas obtains filtering in the carbon tank, and the gas that has purified is discharged to the outside atmosphere at last, and the fuel composition then stays in the carbon tank.

Ordinary ORVR system utilizes the carbon tank to adsorb oil gas, also can be better prevents that oil gas from escaping at the in-process that refuels. The passive absorption mode is realized, and the adjustment of the self structure is utilized to replace an air suction pump which needs energy consumption. Meanwhile, the adsorbed oil gas is left in the carbon tank, and the oil gas flows into the engine to participate in combustion and work doing through the forced ventilation of the carbon tank under a proper working condition, so that the benefits of consumers are guaranteed. But in the two-section process that the cover body of the oil filling pipe body is opened, the oil gun nozzle extends into the oil filling pipe body until the oil filling opening of the oil filling pipe body is completely sealed, and the oil filling gun is pulled out after oil filling is finished until the cover body of the oil filling pipe body is covered, the scheme still has no function on oil gas escaping from the oil filling opening of the oil filling pipe body.

The conventional self-sealing type fuel gun 100 ' is constructed as shown in fig. 1, and includes a fuel gun body 11 ' and a fuel gun nozzle 12 '.

The gun jumping principle is as follows:

the valve seat of the auxiliary switch valve 1114 ' in the oil gun body 11 ' is provided with small holes along the circumference direction, which is communicated with the upper cavity 111 ' of the sealed cavity through the inclined hole on the oil gun body 11 ', the adapter sleeve 114 ' is provided with an inclined hole which is communicated with the outside through the air inlet pipe 113 ' and the air inlet nozzle 1112 ', the inclined hole is communicated with the upper cavity 111 ' of the sealed cavity through the inclined hole on the gun body, and the lower cavity 112 ' of the sealed cavity is communicated with the outside. Three steel balls 1115 ' are arranged in three holes at the upper end of the automatic control rod 1116 ', the switch handle 1111 ' is lifted, the three steel balls 1115 ' clamp the automatic control rod 1116 ' by the inclined plane on the body of the oil gun main body 11 ', when the automatic control rod 116 ' moves upwards, the steel balls 1115 ' are folded towards the center of the automatic control rod 1116 ', so that the automatic control rod 1116 ' moves downwards, and the switch handle 1111 ' loses a fulcrum;

when oil is supplied, the switch handle 1111 ' overcomes the elastic force of the sixth elastic member 118 ' by the fulcrum formed by the steel ball 1115 ', the self-control rod 1116 ', the self-sealing rod 116 ' and the main body of the oil gun main body 11 ', so that the top rod 119 ' pushes the main switch valve 117 ', the main switch valve 117 ' is opened, the pressure oil enters the cavity between the auxiliary switch valve 1114 ' and the main switch valve 117 ' in the main body of the oil gun main body 11 ' and overcomes the elastic force of the seventh elastic member 1113 ' to push the auxiliary switch valve 1114 ', and the oil is discharged from the oil gun nozzle 12 '. When the oil flows through the auxiliary switch valve 1114 ', the pressure of the upper chamber 111 ' of the seal chamber is reduced due to the siphonage of the liquid flow, but the upper chamber 111 ' of the seal chamber is communicated with the outside through the inclined hole of the adapter sleeve 114 ', the air inlet pipe 113 ', and the air inlet nozzle 1112 ', and the outside air is continuously supplemented into the upper chamber 111 ' of the seal chamber, so the pressure of the upper chamber 111 ' of the seal chamber and the pressure of the lower chamber 112 ' of the seal chamber are balanced and are equal to the atmospheric pressure. When the oil amount is enough to submerge the air inlet nozzle 1112 ', the upper chamber 111 ' of the sealed chamber is isolated from the outside to form negative pressure, because the lower chamber 112 ' of the sealed chamber is still at atmospheric pressure, the elastic diaphragm 115 ' drives the self-sealing rod 116 ' to move upwards under the action of the atmospheric pressure difference, so that the steel ball 1115 ' is extruded into the self-control rod 1116 ', the self-control rod 1116 ' moves downwards under the action of the pulling force of the switch handle 1111 ', and the main switch valve 117 ' moves downwards under the action of the elastic force of the sixth elastic piece 118 ' to close the oil passage, thereby stopping oil supply; therefore, the conventional oil gun utilizes negative pressure to realize gun jump.

Disclosure of Invention

The invention aims to provide an oil filling system to solve the technical problem that oil gas is difficult to prevent from leaking in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a refueling system, includes nozzle, oil tank and oil filler pipe, the nozzle includes the nozzle main part and locates nozzle in the nozzle main part, the oil tank includes the oil tank body, the oil filler pipe is including locating the last oiling pipe body of the oil tank body, the movable sleeve is equipped with first sealed lid on the nozzle, it has the sealed lid of second that is used for sealed its oil filler hole to articulate on the oiling pipe body, the sealed lid of second with be equipped with between the oiling pipe body and be used for reseing the sealed first elastic component to closed state of second, the nozzle passes through first sealed lid sealing connection the nozzle, just the nozzle for first sealed lid slides and can push away the sealed lid of second.

Further, be equipped with spacing portion on the nozzle, be equipped with the supporting seat on the nozzle, first sealed lid with the second elastic component has been suppressed to the bullet between the supporting seat, first sealed lid deviates from one side of second elastic component with spacing portion supports and leans on.

Furthermore, one side, close to the oil gun nozzle, of the first sealing cover is provided with a clamping groove, a first mounting groove is formed in the oil gun nozzle, a positioning buckle is embedded into the first mounting groove, a third elastic piece is arranged between the positioning buckle and the first mounting groove, and when the positioning buckle and the clamping groove are opposite, the third elastic piece presses the positioning buckle into the clamping groove to lock the first sealing cover to slide relative to the oil gun nozzle.

Furthermore, a concave cavity is formed in one side, away from the oil gun nozzle, of the positioning buckle, the supporting seat stretches into the concave cavity, and the third elastic piece enables the positioning buckle to be pressed on the supporting seat.

Furthermore, be equipped with first inclined plane on the location is detained, first inclined plane certainly one side that the location is detained and is close to the body of refueling extends to one side that the location is detained and is deviated from the nozzle, the distance that one end that first inclined plane was kept away from the nozzle is to the body of refueling is greater than the distance that one end that first inclined plane is close to the nozzle is to the body of refueling.

Furthermore, a second inclined plane which can be attached to the first inclined plane is arranged on the first sealing cover.

Further, be equipped with the second mounting groove on the oil gun mouth, the second mounting groove has inlayed the on-off valve, the on-off valve with be equipped with the fourth elastic component between the second mounting groove, work as the on-off valve with first sealed lid is close to when one side of the oil duct of oil gun mouth supports the time the on-off valve is sealed the oil duct of oil gun mouth works as the on-off valve follows the oil gun mouth roll-off during first sealed lid, the fourth elastic component promotes the on-off valve is opened the oil duct of oil gun mouth.

Furthermore, the number of the opening and closing valves is two, the two opening and closing valves close the oil duct of the oil gun nozzle when being aligned, and the moving stroke of each opening and closing valve is half of the caliber of the oil duct of the oil gun nozzle.

Furthermore, a third inclined plane is arranged on the first sealing cover, the third inclined plane extends from one side, away from the supporting seat, of the first sealing cover to one side, close to the oil duct of the oil gun nozzle, of the first sealing cover, and the distance from one end, away from the oil duct of the oil gun nozzle, of the third inclined plane to the oil filling pipe body is smaller than the distance from one end, close to the oil duct of the oil gun nozzle, of the third inclined plane to the oil filling pipe body.

Furthermore, a fourth inclined plane which can be attached to the third inclined plane is arranged on the opening and closing valve.

Furthermore, one end of the second sealing cover is hinged with the oil filling pipe body, the other end of the second sealing cover is provided with a fifth inclined plane, a sixth inclined plane is arranged on the oil filling pipe body, and the second sealing cover seals an oil filling opening of the oil filling pipe body when the fifth inclined plane is attached to the sixth inclined plane; the opening and closing valve is provided with a seventh inclined plane opposite to the fourth inclined plane, the inclined direction of the seventh inclined plane is opposite to that of the fourth inclined plane, the limiting part is provided with an eighth inclined plane, and the fourth inclined plane, the sixth inclined plane and the eighth inclined plane are parallel.

Further, be equipped with the cavity on the body of refueling, the embedding has the control lever and is used for reseing in the cavity the fifth elastic component of control lever, the one end of control lever stretches into in the oil duct of body of refueling and can with the open mode the sealed cover of second supports and leans on, the other end of control lever stretches out outside the body of refueling, it has the hasp to add external the articulating of body of refueling, the one end of hasp be equipped with be used for with first sealed lid lock in refuel pawl on the body of refueling, the other end is equipped with the fork groove, the control lever stretches out one of adding the body of refueling is served and is equipped with the boss, the boss cunning is located on the fork groove.

Furthermore, be equipped with the check valve of ventilating, float support on the oil tank body and locate float in the float support, be equipped with the oil gas check valve on the oil gas passageway, be equipped with the taper valve on the float, the one end of oil gas passageway is located in the oil tank body and its hole be with the taper hole of taper valve adaptation.

Furthermore, the oil gun is a self-sealing oil gun, an upper sealing cavity of the self-sealing oil gun is communicated with an air inlet pipe of the self-sealing oil gun, and a lower sealing cavity of the self-sealing oil gun is communicated with the atmosphere.

The oil gun provided by the invention has the beneficial effects that: compared with the prior art, the refueling system has the advantages that the first sealing cover is arranged on the fuel gun nozzle, the second sealing cover is arranged on the refueling pipe body, the first sealing cover is connected to the refueling pipe body, the fuel gun nozzle slides forwards relative to the first sealing cover until the second sealing cover is opened by overcoming the elasticity of the first elastic piece, so that the refueling operation can be carried out, when the refueling is finished, the fuel gun nozzle slides backwards relative to the first sealing cover until the refueling pipe body is withdrawn, and the second sealing cover is reset to the closed state under the elasticity of the first elastic piece to close the refueling pipe body; the process that the nozzle of the oil gun stretches into the oil filling pipe body and the process that the nozzle of the oil gun is pulled out after oil filling is finished, the oil filling pipe body is isolated from the external atmosphere, oil gas can not escape from an oil filling port of the oil filling pipe body, oil gas in the oil filling process enters a carbon tank through an oil tank body and an oil gas channel to be filtered, and purified gas is discharged to the external atmosphere again to prevent the oil gas from leaking.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic cross-sectional view of a prior art self-sealing fuel gun;

FIG. 2 is a schematic cross-sectional view of a fuel tank and a fuel filler tube of a fuel filling system according to an embodiment of the present invention;

FIG. 3 is a partial enlarged view of the portion A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of a fuel gun of a fueling system according to an embodiment of the present invention;

FIG. 5 is a schematic view of the tank and filler tube of FIG. 2 in operation;

FIG. 6 is a schematic view I of the working state of a cone valve of the oil tank;

FIG. 7 is a schematic view II of the working state of a cone valve of the oil tank;

FIG. 8 is a first view of the fuel filler tube of FIG. 3 in cooperation with the fuel gun of FIG. 4;

FIG. 9 is a second operational condition view of the filler tube of FIG. 3 in cooperation with the fuel gun of FIG. 4;

FIG. 10 is a third view of the filler tube of FIG. 3 in cooperation with the fuel gun of FIG. 4;

FIG. 11 is a first schematic view of a portion of the first seal cap of FIG. 2 in cooperation with the nozzle tip;

FIG. 12 is a second schematic view of the first seal cap and the nozzle of the oil gun in FIG. 2;

FIG. 13 is a third schematic view of the first seal cap and the nozzle of the grease gun in FIG. 2;

FIG. 14 is a fourth schematic view of the first seal cap and the nozzle tip of FIG. 2 in a mated configuration; .

Wherein, in the figures, the respective reference numerals:

100' -a fuel nozzle;

11' -an oil gun body; 111' -seal the upper chamber; 112' -sealing the lower cavity; 113' -an inlet duct; 114' -an adapter sleeve; 115' -an elastic membrane; 116' -self-sealing rods; 117' -main on-off valve; 118' -a sixth resilient member; 119' -a mandril; 1110' -an oil gun body; 1111' -a switch handle; 1112' -an air intake nozzle; 1113' -seventh elastic member; 1114' -a secondary on-off valve; 1115' -a steel ball; 1116' -a self-control lever; 12' -a grease nipple;

100-oil gun;

11-an oil gun body; 111-a sealed cavity upper cavity; 112-sealing the cavity lower cavity; 113-an air inlet pipe; 115-an elastic membrane; 116-self-sealing rods; 117-main on-off valve; 118-a sixth resilient member; 119-a mandril; 1111-a switch handle; 1112-an air intake nozzle; 1113-seventh elastomeric element; 1114-auxiliary on-off valve; 1115-steel ball; 1116-a self-control lever; 12-oil gun nozzle; 121-a limiting part; 122-a first mounting groove; 123-a second mounting groove; 124-eighth bevel; 13-a first sealing cover; 131-a card slot; 132-a second bevel; 133-a third bevel; 14-a support base; 15-a second elastic member; 16-positioning buckles; 161-cavity; 162-a first bevel; 17-a third elastic member; 18-opening and closing the valve; 181-fourth incline; 182-seventh bevel; 19-a fourth elastic member;

200-oil tank;

21-an oil tank body; 22-oil gas channel; 221-taper hole; 23-a carbon tank; 231-canister desorption valve; 24-a vent check valve; 25-a float support; 26-a float; 27-oil gas one-way valve; 28-cone valve;

300-oil filling pipe;

31-a refueling pipe body; 311-sixth slope; 312-a cavity; 32-a second sealing cover; 321-a fifth bevel; 33-a control lever; 331-boss; 34-a fifth elastic member; 35-locking; 351-pawl; 352-fork pocket.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Referring to fig. 2 to 4 together, the refueling system provided by the present invention will now be described. The refueling system comprises a refueling gun 100, a fuel tank 200 and a refueling pipe 300, wherein the refueling gun 100 comprises a fuel gun main body 11 and a fuel gun nozzle 12 arranged on the fuel gun main body 11, the fuel tank 200 comprises a fuel tank body 21, and the refueling pipe 300 comprises a refueling pipe body 31 arranged on the fuel tank body 21; the movable sleeve is equipped with first sealed lid 13 on the oil gun mouth 12, and it has the sealed lid 32 of second that is used for sealing its oil filler hole to articulate on the body of refueling body 31, is equipped with the first elastic component that is used for restoring to the throne the sealed lid 32 of second to the closed condition between the sealed lid 32 of second and the body of refueling 31, and oil gun mouth 12 is through the sealed lid 31 of first sealed lid 13 sealing connection of first, and oil gun mouth 12 slides and can push away the sealed lid 32 of second for first sealed lid 13.

Compared with the prior art, the refueling system provided by the invention has the advantages that the first sealing cover 13 is arranged on the fuel gun nozzle 12, the second sealing cover 32 is arranged on the refueling pipe body 31, the first sealing cover 13 is connected to the refueling pipe body 31, the fuel gun nozzle 12 slides forwards relative to the first sealing cover 13 until the second sealing cover 32 is opened by overcoming the elasticity of the first elastic part, so that the refueling operation can be carried out, when the refueling is finished, the fuel gun nozzle 12 slides backwards relative to the first sealing cover 13 until the fuel gun nozzle exits from the refueling pipe body 31, and the second sealing cover 32 is reset to a closed state under the elasticity of the first elastic part to close the refueling pipe body 31; the process that the oil gun nozzle 12 stretches into the oil filling pipe body 31 and the process that the oil gun nozzle 12 is pulled out after oil filling is finished, the oil filling pipe body 31 is isolated from the outside atmosphere, oil gas cannot escape from an oil filling opening of the oil filling pipe body 31, and leakage of the oil gas is avoided. The first elastic member is preferably a torsion spring provided at a hinge of the second sealing cover and the refueling pipe body 31.

Further, referring to fig. 4, as a specific embodiment of the fueling system provided by the present invention, a limiting portion 121 is disposed on the fuel gun nozzle 12, a supporting seat 14 is disposed on the fuel gun 100, a second elastic member 15 is elastically pressed between the first sealing cover 13 and the supporting seat 14, and a side of the first sealing cover 13 away from the second elastic member 15 abuts against the limiting portion 121. Spacing portion 121 and supporting seat 14 are used for spacing first sealed lid 13 on oil gun nozzle 12, and when oil gun nozzle 12 stretched into the body 31 of refueling, second elastic component 15 can compress tightly first sealed lid 13 on the body 31 of refueling, avoid oil gas to leak from the junction of first sealed lid 13 and body 31 of refueling, improve sealing performance.

Further, referring to fig. 4, as a specific embodiment of the fueling system provided by the present invention, a clamping groove 131 is disposed on a side of the first sealing cover 13 close to the gun nozzle 12, a first mounting groove 122 is disposed on the gun nozzle 12, a positioning buckle 16 is embedded in the first mounting groove 122, a third elastic member 17 is disposed between the positioning buckle 16 and the first mounting groove 122, and the positioning buckle 16 is pressed into the clamping groove 131 by the third elastic member 17 when the positioning buckle 16 and the clamping groove 131 are aligned, so as to lock the sliding of the first sealing cover 13 relative to the gun nozzle 12. Through the cooperation of location knot 16 and draw-in groove 131, restrict the slip of first sealed lid for grease gun nozzle 12, setting up of third elastic component 17 makes location knot 16 can move about, when location knot 16 just is to draw-in groove 131, third elastic component 17 compresses tightly location knot 16 in draw-in groove 131, guarantee the reliability to the locking of the relative slip between first sealed lid 13 and the grease gun nozzle 12, neither can push away the grease gun nozzle 12 by force and more deepen grease gun body 31, also can not pull out grease gun nozzle 12 by force, press down location knot 16, when making location knot 16 and draw-in groove 131 separate, first sealed lid 13 can be followed grease gun nozzle 12 again and slide, high durability and convenient use. Preferably, the size of the positioning fastener 16 is matched with the size of the first mounting groove 122, so that the positioning fastener 16 is constrained to only translate up and down along the axis of the first mounting groove 122, and the first sealing cover 13 can be better positioned.

Further, referring to fig. 4, as an embodiment of the fueling system of the present invention, a cavity 161 is formed on a side of the positioning buckle 16 away from the gun nozzle 12, the supporting seat 14 extends into the cavity 161, and the third elastic member 17 presses the positioning buckle 16 against the supporting seat 14. The bottom dead center position of the positioning buckle 16 is defined by the first mounting groove 122, and the top dead center position of the positioning buckle 16 is defined by the support seat 14, so that the positioning buckle 16 is ensured to move, and the positioning buckle 16 is prevented from being separated from the first mounting groove 122.

Further, referring to fig. 11 to 14 together, as an embodiment of the fueling system provided by the present invention, the positioning buckle 16 is provided with a first inclined surface 162, the first inclined surface 162 extends from a side of the positioning buckle 16 close to the fueling pipe body 31 to a side of the positioning buckle 16 away from the fueling gun nozzle 12, and a distance from an end of the first inclined surface 162 away from the fueling gun nozzle 12 to the fueling pipe body 31 is greater than a distance from an end of the first inclined surface 162 close to the fueling gun nozzle 12 to the fueling pipe body 31. When first sealed lid 13 slides towards supporting seat 14 like this, first sealed lid 13 supports against in first inclined plane 162 and pushes down location and detains 16, until the top card of location detaining 16 go into draw-in groove 131 in, during the refueling operation, only need promote the oil gun nozzle 12 and go deep into the body 31 of refueling, until location detain 16 card go into in the draw-in groove 131 can, convenient to use, and need push down location and detain 16 after finishing refueling, oil gun nozzle 12 can withdraw from the body 31 of refueling.

Further, referring to fig. 11 to 14, as an embodiment of the refueling system provided by the present invention, the first sealing cover 13 is provided with a second inclined surface 132 capable of adhering to the first inclined surface 162. When the first sealing cover 13 presses the positioning buckle 16 downwards, the first inclined surface 162 is attached to the second inclined surface 132, so that the stress area is increased, and the durability of the structure is improved.

Further, referring to fig. 4 and fig. 8-10 together, as an embodiment of the fueling system provided by the present invention, a second mounting groove 123 is formed on the gun nozzle 12, an opening/closing valve 18 is embedded in the second mounting groove 123, a fourth elastic member 19 is disposed between the opening/closing valve 18 and the second mounting groove 123, when the opening/closing valve 18 abuts against one side of the first sealing cover 13 close to the oil passage of the gun nozzle 12, the opening/closing valve 18 seals the oil passage of the gun nozzle 12, and when the opening/closing valve 18 slides out of the first sealing cover 13 along with the gun nozzle 12, the fourth elastic member 19 pushes the opening/closing valve 18 to open the oil passage of the gun nozzle 12. The oil duct of the oil gun nozzle 12 is opened or closed by the opening and closing valve 18, the oil duct of the oil gun nozzle 12 is closed by the constraint of the first sealing cover 13 when oil is not added, meanwhile, the fourth elastic piece 19 generates deformation energy storage, the first sealing cover 13 covers the oil filling pipe body 31, after the oil gun nozzle 12 is in sealing connection with the oil filling pipe body 31, the oil gun nozzle 12 slides relative to the first sealing cover 13 until the oil gun nozzle 12 slides out of the first sealing cover 13, and the fourth elastic piece 19 recovers deformation to automatically enable the opening and closing valve 18 to move to open the oil duct of the oil gun nozzle 12, so that the time for opening and closing the oil duct of the oil gun nozzle 12 is controlled, the generation of oil gas is reduced, and the external leakage of the oil gas is avoided.

Specifically, one opening/closing valve 18 may be provided, and the oil passage of the gun nozzle 12 is closed by one opening/closing valve 18 alone, or a plurality of opening/closing valves 18 may be provided, and the oil passage of the gun nozzle 12 is closed by a plurality of opening/closing valves 18 in cooperation. Preferably, referring to fig. 8 to 10, two opening and closing valves 18 are provided, and when the two opening and closing valves 18 are closed, the oil passage of the oil gun nozzle 12 is closed, and the moving stroke of each opening and closing valve 18 is half of the caliber of the oil passage of the oil gun nozzle 12, which not only has a relatively simple structure, but also can quickly open or close the oil passage of the oil gun nozzle 12 to prevent oil and gas from leaking.

Further, referring to fig. 9 and fig. 10 together, as an embodiment of the fueling system provided by the present invention, the first sealing cover 13 is provided with a third inclined surface 133, the third inclined surface 133 extends from a side of the first sealing cover 13 away from the supporting seat 14 to a side of the first sealing cover 13 close to the oil passage of the gun nozzle 12, and a distance from an end of the third inclined surface 133 away from the oil passage of the gun nozzle 12 to the fueling pipe body 31 is smaller than a distance from an end of the third inclined surface 133 close to the oil passage of the gun nozzle 12 to the fueling pipe body 31. When the oil gun nozzle 12 is pulled out, the oil gun nozzle 12 slides relative to the first sealing cover 13, and the opening and closing valve 18 is pressed against the third inclined surface 133 and moves towards the oil passage of the oil gun nozzle 12 under the action of the pressure of the third inclined surface 133 until the opening and closing valve 18 is restrained by one side of the oil passage of the first sealing cover 13 close to the oil gun nozzle 12 to close the oil passage of the oil gun nozzle 12.

Further, referring to fig. 9 and 10, as an embodiment of the refueling system of the present invention, the open/close valve 18 is provided with a fourth inclined surface 181 which can be attached to the third inclined surface 133. When the first sealing cover 13 presses the opening and closing valve 18 downwards, the third inclined surface 133 is attached to the fourth inclined surface 181, so that the stress area is increased, and the durability of the structure is improved.

Further, referring to fig. 3, fig. 9 and fig. 10 together, as a specific embodiment of the refueling system provided by the present invention, one end of the second sealing cover 32 is hinged to the refueling pipe body 31, the other end is provided with a fifth inclined surface 321, the refueling pipe body 31 is provided with a sixth inclined surface 311, and when the fifth inclined surface 321 is attached to the sixth inclined surface 311, the second sealing cover 32 seals the refueling port of the refueling pipe body 31; the opening and closing valve 18 is provided with a seventh inclined surface 182 opposite to the fourth inclined surface 181, the inclined directions of the seventh inclined surface 182 and the fourth inclined surface 181 are opposite, the limiting part 121 is provided with an eighth inclined surface 124, and the fourth inclined surface 181, the sixth inclined surface 311 and the eighth inclined surface 124 are parallel. Not only can avoid oil gas leakage, but also is convenient for the oil gun nozzle 12 to freely extend into the oil filling pipe body 31 and withdraw from the oil filling pipe body 31, and is more convenient to use.

Further, referring to fig. 3, fig. 9 and fig. 10 together, as a specific embodiment of the refueling system provided by the present invention, a cavity 312 is disposed on the refueling pipe 31, a control rod 33 and a fifth elastic element 34 for resetting the control rod 33 are embedded in the cavity 312, one end of the control rod 33 extends into an oil passage of the refueling pipe 31 and can abut against the second sealing cover 32 in an open state, the other end of the control rod 33 extends out of the refueling pipe 31, a latch 35 is hinged outside the refueling pipe 31, one end of the latch 35 is provided with a pawl 351 for latching the first sealing cover 13 on the refueling pipe 31, the other end is provided with a fork slot 352, one end of the control rod 33 extending out of the refueling pipe 31 is provided with a boss 331, and the boss 331 is slidably disposed on the fork slot 352. In-process that oil gun nozzle 12 pushed open second sealed lid 32 and stretched into in-process of refueling body 31, second sealed lid 32 rotates and leans on control rod 33, the sealed lid 32 of second continues to rotate, control rod 33 is overcome the elasticity of fifth elastic component 34 and is moved towards the direction of keeping away from refueling body 31 axis by the drive of the sealed lid 32 of second, hasp 35 rotates under the promotion of boss 331, hasp 35 is with first sealed lid 13 lock-in on refueling body 31 when pawl 351 is located the one side that first sealed lid 13 kept away from control rod 33, only need stretch into refueling body 31 with oil gun nozzle 12 in, hasp 35 can be automatic with first sealed lid 13 lock-in on refueling body 31, guarantee the sealed effect of first sealed lid 13 to oil gun nozzle 12 and refueling body 31 of refueling process, prevent that oil gas from leaking, it is more convenient to use.

Further, referring to fig. 2, fig. 6 and fig. 7 together, as a specific embodiment of the refueling system provided by the present invention, the refueling system further includes a canister 23 and an oil gas passage 22, the canister 23 is communicated with the fuel tank body 21 through the oil gas passage 22, the fuel tank body 21 is provided with a ventilation check valve 24, a float bracket 25 and a float 26 disposed in the float bracket 25, the oil gas passage 22 is provided with an oil gas check valve 27, the float 26 is provided with a cone valve 28, one end of the oil gas passage 22 is located in the fuel tank body 21, and an inner hole of the oil gas passage 22 is a cone hole 221 adapted to the cone valve 28. The first sealing cover 13 is connected with the oil filling pipe body 31 and the oil gun nozzle 12 in a sealing way, the ventilation one-way valve 24 only allows outside air to be introduced into the oil tank body 21, air in the oil tank body 21 cannot enter the atmosphere from the inside, oil gas can only flow into the carbon tank 23 from a gap between the oil gas channel 22 and the cone valve 28 through the oil gas one-way valve 27, and purified air is discharged to the outside after being adsorbed in the carbon tank 23; in the process of refueling, the float 26 rises along with the rising of the oil level, the gap between the cone valve 28 and the oil-gas channel 22 is gradually reduced until the cone valve 28 is embedded into the cone hole 221 to completely seal the oil-gas channel 22, so that the phenomenon that a large amount of oil gas rushes into the carbon tank 23 in a short time to cause overload work of the carbon tank 23 can be avoided, and the effect of limiting the refueling amount can be achieved. The transverse dimension of the float 26 is preferably adapted to the transverse dimension of the float holder 25, constraining the float 26 to only translate up and down along the axis of the longitudinal blow-by passage 22, better sealing of the blow-by passage 22 by the cone valve 28.

Further, referring to fig. 4 and fig. 5, as an embodiment of the fueling system according to the present invention, the fueling gun 100 is a self-sealing fueling gun 100, an upper sealing chamber cavity 111 of the self-sealing fueling gun 100 is connected to an air inlet pipe 113 of the self-sealing fueling gun 100, and a lower sealing chamber cavity 112 of the self-sealing fueling gun 100 is connected to the atmosphere. The phenomenon that the pressure P1 in the oil tank body 21 and the pressure P2 at the oil filling pipe body 31 rise rapidly to cause gun jump can be avoided when the oil-gas channel 22 is continuously filled with oil after the cone valve 28 is completely sealed. Other structures of the self-sealing type fuel filler (such as an adapter sleeve, an elastic diaphragm 115, a self-sealing rod 116, a main switch valve 117, a sixth elastic member 118, a push rod 119, a switch handle 1111, a fuel inlet nozzle 1112, a seventh elastic member 1113, a sub switch valve 1114, a steel ball 1115, a self-control rod 1116 and the like) can be the same as those of fig. 1.

Wherein one or more of the second elastic member 15, the third elastic member 17, the fourth elastic member 19, the fifth elastic member 34, the sixth elastic member 118, and the seventh elastic member 1113 may be compression springs.

The operation of the preferred refueling system of the present invention is described below with reference to the accompanying drawings:

as shown in fig. 8, when the vehicle is ready to be refueled, the nozzle 12 abuts against the end of the filler opening of the filler pipe 300, and the end surface of the filler opening of the filler pipe 300, the end surface of the second seal cover 32, the end surface of the nozzle 12, and the end surface of the first seal cover 13 are flush with each other to form the same plane. The control rod 33 abuts against the bottom dead center position by the elastic force of the fifth elastic member 34, thereby controlling the latch 35 to be in the open state. The moving strokes of the two opening and closing valves 18 are respectively S/2 which is half of the caliber of an oil channel (namely an oil duct) of the oil gun nozzle 12, and at the moment, the two opening and closing valves 18 are closed under the constraint of the first sealing cover 13, so that the oil gun nozzle 12 is in a closed state.

As shown in FIG. 9, the nozzle 12 begins to extend into the filler tube 300, the first sealing cap 13 disengages from the eighth inclined surface 124 and begins to slide on the fuel nozzle 100, and the nozzle 12 pushes open the filler cap second sealing cap 32 of the filler tube 300 against the elasticity of the hinged torsion spring of the filler cap second sealing cap 32 of the filler tube 300. And the open-close valve 18 without restraint opens the oil path of the gun nozzle 12 by the elastic force of the fourth elastic member 19. Since the second elastic member 15 is supported on the supporting seat 14 fixed to the grease gun body 1110, and the grease gun body 1110 and the grease filling pipe body 31 are close to each other, the first sealing cover 13 is still attached to the grease filling opening end face of the grease filling pipe 300 under the elastic force of the second elastic member 15, so that the oil path is still isolated from the external atmosphere.

As shown in fig. 10, as the oil gun nozzle 12 continues to extend into the oil filling pipe 300, the first sealing cover 13 pushed open by the oil gun nozzle 12 starts to push the control rod 33, the pushed control rod 33 moves upward against the elastic force of the fifth elastic member 34 and controls the lock catch 35 to rotate in the closing direction until the first sealing cover 13 abuts against the rear of the open-close valve 18, at this time, the first sealing cover 13 is kept at the same angle, the control rod 33 is kept at the same height, and the lock catch 35 locks the first sealing cover 13 by catching the first sealing cover 13, so that the first sealing cover 13 and the oil filling pipe body 31 form a closed and fixed whole.

As shown in fig. 11, when the first seal cap 13 is moved backward relative to the fuel gun body 10 and the first seal cap 13 reaches the support seat 14, the first seal cap 13 first contacts the retaining buckle 16, and the first inclined surface 162 and the second inclined surface 132 are engaged with each other. The positioning buckle 16 abuts against the top dead center under the elastic force of the third elastic member 17.

As shown in fig. 12, the first sealing cover 13 pushes the positioning buckle 16, and the positioning buckle 16 moves downwards against the elasticity of the third elastic member 17 due to the inclined surface, and the first sealing cover 13 continues to push.

As shown in fig. 13, the positioning buckle 16 is clamped into the groove of the first sealing cover 13 under the elastic force of the third elastic member 17, at this time, the fuel gun can stop extending into the fuel filler pipe, the first sealing cover 13 abuts against the protrusion on the positioning buckle 16 and cannot move relative to the fuel gun main body 11 under the elastic force of the second elastic member 15, at this time, the first sealing cover 13, the fuel filler pipe body 31 and the fuel gun main body 11 form a closed and fixed whole, even if the fuel gun is released, the isolation state of the internal oil path from the external atmosphere can be continuously maintained, and the force is not required to be applied to the fuel gun all the time in the fuel filling process to achieve the sealing effect.

As shown in fig. 14, after the oil is filled, only the positioning buckle 16 (a button convenient to press can be arranged on the positioning buckle 16) needs to be pressed, the first sealing cover 13 is not constrained by the positioning buckle 16, the second elastic member 15 pushes the supporting seat 14, the oil gun main body 11 fixedly connected with the supporting seat 14 moves backwards relative to the first sealing cover 13 and the oil filling opening of the oil filling pipe 300, and the oil gun nozzle 12 starts to pull out the oil filling pipe.

During the pulling process, the inclined surface at the tail end of the oil filling pipe second sealing cover 32 respectively interacts with the inclined surface at the end part of the oil gun nozzle 12 and the inclined surface at the top part of the opening and closing valve 18 to push the second sealing cover 32, so that the oil gun nozzle 12 can be smoothly withdrawn. Meanwhile, the second sealing cover 32 of the oil filling pipe rotates towards the closing direction under the action of the torsion spring at the hinged position to release the restraint on the control rod 33, the control rod 33 moves downwards under the action of the elasticity of the fifth elastic piece 34 to drive the lock catch 35 to rotate towards the opening direction, so that the first sealing cover 13 is unlocked, but at the moment, the first sealing cover 13 still keeps the joint with the end face of the oil filling opening of the oil filling pipe 300 under the action of the second elastic piece 15 until the state shown in fig. 8 is finally recovered.

As shown in fig. 5, the canister desorption valve 231 provided in the canister 23 is opened under appropriate conditions under the control of the engine control module, and the canister 23 is subjected to forced ventilation desorption. The ventilation check valve 24 can only be opened when the air pressure in the oil tank body 21 is too low, so that the outside air is supplemented, and the oil gas in the oil tank body 21 cannot be discharged outwards. Because the oil filling port of the oil filling pipe 300 is sealed during oil filling, oil gas can only flow into the carbon tank 23 from the gap between the oil gas channel 22 and the cone valve 28 through the oil gas one-way valve 27, and purified gas is discharged to the outside after being adsorbed in the carbon tank 23. The cone valve 28 is fixed above the float 26, and the float 26 can only translate up and down along a fixed axis under the constraint of the float bracket 25. The internal bore at the end of the oil and gas passage 22 is shaped to mate with the cone valve 28.

As shown in fig. 5 to 7, the float 26 rises along with the rise of the oil level in the oil filling process, and the gap formed between the cone valve 28 and the inner hole at the end part of the oil-gas passage 22 can be continuously and gently reduced through reasonable design until the cone valve 28 completely seals the oil-gas passage 22, so that the phenomenon that a large amount of oil gas rushes into the carbon tank 23 in a short time to cause overload work of the carbon tank 23 can be avoided, and the effect of limiting the oil filling amount can be achieved.

As shown in fig. 4 to 7, after the cone valve 28 completely seals the oil-gas passage 22, if oil is continuously added into the oil tank body 21 at this time, the air pressures P1 and P2 will certainly rise sharply, and if a conventional fuel gun is used, the gun jump function cannot be realized, so compared with the conventional fuel gun, the upper sealing cavity chamber 111 of the fuel gun of the present invention is connected to the outside atmosphere, and the lower sealing cavity chamber 112 is connected to the inclined hole on the fuel gun body 11, the inclined hole on the adapter sleeve, the air inlet pipe 113, and the air inlet nozzle 1112 are the same as the P2 in the fuel pipe. When P2 rises to a certain degree, the pressure difference between the lower cavity 112 of the sealed cavity and the upper cavity 111 of the sealed cavity is enough to drive the elastic diaphragm 115 and the self-sealing rod 116 to move upwards, so that the steel ball 1115 is squeezed into the self-control rod 1116, the switch handle 1111 loses the fulcrum, and gun jump is realized.

After refueling is finished, the liquid level in the oil tank gradually drops in the process of gasoline consumption of the automobile, the float 26 drives the cone valve 28 to move downwards along with the cone valve 28, the opening between the cone valve 28 and the oil-gas channel 22 is started, high-pressure oil gas with the pressure value of P1 in the oil tank body is released into the carbon tank 23, but the liquid level at the float 26 rises rapidly under the action of the high-pressure oil gas with the pressure value of P2 at the refueling pipe body 31, the float 26 is driven to enable the cone valve 28 to seal the oil-gas channel 22, and the oil-gas discharge to the carbon tank 23 is stopped. When the gasoline in the tank body 21 continues to be consumed and the liquid level begins to drop a little again, the above operation is repeated, and the cycle is repeated. This lift can avoid oil gas to gush into carbon tank 23 in a large amount in the short time, causes carbon tank 23 overload work.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Refueling system, including nozzle, oil tank and filler tube, the nozzle includes the nozzle main part and locates the nozzle in the nozzle main part, the oil tank includes the oil tank body, the filler tube is including locating the last oiling tube body, its characterized in that of the oil tank body: the oil gun nozzle is movably sleeved with a first sealing cover, a second sealing cover used for sealing an oil filling port of the oil gun nozzle is hinged to the oil filling pipe body, a first elastic piece used for resetting the second sealing cover to a closed state is arranged between the second sealing cover and the oil filling pipe body, the oil gun nozzle is connected with the oil filling pipe body in a sealing mode through the first sealing cover, and the oil gun nozzle can push the second sealing cover open by sliding relative to the first sealing cover; one side of the first sealing cover, which is close to the oil gun nozzle, is provided with a clamping groove, the oil gun nozzle is provided with a first mounting groove, a positioning buckle is embedded in the first mounting groove, a third elastic piece is arranged between the positioning buckle and the first mounting groove, and the positioning buckle and the clamping groove are just opposite to each other, so that the third elastic piece presses the positioning buckle into the clamping groove to lock the first sealing cover to slide relative to the oil gun nozzle.

2. The refueling system as recited in claim 1 wherein: the oil gun is characterized in that a limiting portion is arranged on the oil gun nozzle, a supporting seat is arranged on the oil gun, a second elastic piece is elastically pressed between the first sealing cover and the supporting seat, and one side, deviating from the second elastic piece, of the first sealing cover is abutted against the limiting portion.

3. The refueling system as recited in claim 2 wherein: the positioning buckle is provided with a concave cavity on one side deviating from the oil gun nozzle, the supporting seat stretches into the concave cavity, and the third elastic piece is used for pressing the positioning buckle on the supporting seat.

4. A fuel filling system as claimed in claim 3, wherein: the oil gun nozzle is characterized in that a first inclined plane is arranged on the positioning buckle, one side, close to the oil gun nozzle, of the positioning buckle extends to one side, away from the oil gun nozzle, of the positioning buckle, and the distance from one end, away from the oil gun nozzle, of the first inclined plane to the oil gun nozzle is larger than the distance from one end, close to the oil gun nozzle, of the first inclined plane to the oil gun nozzle.

5. The refueling system as recited in claim 4 wherein: the first sealing cover is provided with a second inclined plane which can be attached to the first inclined plane.

6. The refueling system as recited in claim 2 wherein: be equipped with the second mounting groove on the oil gun mouth, the open-close valve has been inlayed to the second mounting groove, the open-close valve with be equipped with the fourth elastic component between the second mounting groove, work as the open-close valve with first sealed lid is close to when one side of the oil duct of oil gun mouth supports the time the open-close valve is sealed the oil duct of oil gun mouth, work as the open-close valve is followed the roll-off of oil gun mouth during first sealed lid, the fourth elastic component promotes the open-close valve is opened the oil duct of oil gun mouth.

7. The refueling system as recited in claim 6, wherein: the oil gun nozzle is characterized in that the number of the opening and closing valves is two, the two opening and closing valves close an oil duct of the oil gun nozzle when being aligned, and the moving stroke of each opening and closing valve is half of the caliber of the oil duct of the oil gun nozzle.

8. The refueling system as recited in claim 6, wherein: the first sealing cover is provided with a third inclined surface, the third inclined surface extends to one side, away from the supporting seat, of the first sealing cover, the first sealing cover is close to one side of an oil duct of the oil gun nozzle, and the distance from one end, away from the oil duct of the oil gun nozzle, of the third inclined surface to the oiling pipe body is smaller than the distance from one end, close to the oil duct of the oil gun nozzle, of the third inclined surface to the oiling pipe body.

9. The refueling system as recited in claim 8 wherein: and a fourth inclined plane which can be attached to the third inclined plane is arranged on the opening and closing valve.

10. The refueling system as recited in claim 9 wherein: one end of the second sealing cover is hinged with the oil filling pipe body, the other end of the second sealing cover is provided with a fifth inclined plane, the oil filling pipe body is provided with a sixth inclined plane, and the second sealing cover seals an oil filling opening of the oil filling pipe body when the fifth inclined plane is attached to the sixth inclined plane; the opening and closing valve is provided with a seventh inclined plane opposite to the fourth inclined plane, the inclined direction of the seventh inclined plane is opposite to that of the fourth inclined plane, the limiting part is provided with an eighth inclined plane, and the fourth inclined plane, the sixth inclined plane and the eighth inclined plane are parallel.

11. The refueling system as recited in claim 1 wherein: the oil filling pipe is characterized in that a cavity is formed in the oil filling pipe body, a control rod and a fifth elastic piece used for resetting the control rod are embedded in the cavity, one end of the control rod extends into an oil duct of the oil filling pipe body and can be abutted against the second sealing cover in an opening state, the other end of the control rod extends out of the oil filling pipe body, a lock catch is hinged outside the oil filling pipe body, one end of the lock catch is provided with a pawl used for buckling the first sealing cover on the oil filling pipe body, the other end of the lock catch is provided with a fork groove, one end of the control rod extending out of the oil filling pipe body is provided with a boss, and the boss is slidably arranged on the.

12. The refueling system as recited in claim 1 wherein: the oil tank still includes carbon tank and oil gas passageway, the carbon tank with pass through between the oil tank body the oil gas passageway switches on, be equipped with the check valve of ventilating, float support on the oil tank body and locate float in the float support, oil gas check valve locates on the oil gas passageway, be equipped with the cone valve on the float, the one end of oil gas passageway is located in the oil tank body and its hole be with the taper hole of cone valve adaptation.

13. The fueling system of claim 12, wherein: the oil gun is a self-sealing oil gun, an upper sealing cavity of the self-sealing oil gun is communicated with an air inlet pipe of the self-sealing oil gun, and a lower sealing cavity of the self-sealing oil gun is communicated with the atmosphere.