An ORVR refueling hose

Abstract

This invention belongs to the technical field of vapor recovery equipment for gas stations, specifically relating to an ORVR refueling pipe. It includes an ORVR valve, a nozzle connector, and a pipe connector. The ORVR valve comprises a valve body, a first valve core, and a drive unit. The valve body has a refueling channel and a vapor recovery channel. The first valve core is located in the vapor recovery channel, and the drive unit is located in the valve body and is drively connected to the first valve core. The nozzle connector is located at the outlet end of the ORVR valve, and the pipe connector is located at the inlet end of the ORVR valve. The ORVR valve in this ORVR refueling pipe can open / close the vapor recovery channel according to the type of vehicle, making it suitable for both vehicles with and without ORVR systems. This allows the vacuum pump in the refueling equipment to recover vapors from the fuel tank, preventing vapor spillage; or it prevents the vacuum pump from failing to draw outside air into the fuel storage tank, thus avoiding the generation of more vapors and serious pollution problems.

Description

Technical Field

[0001] This invention belongs to the technical field of gas station oil and gas recovery equipment, specifically relating to an ORVR refueling pipe. Background Technology

[0002] According to the "Limits and Measurement Methods for Pollutant Emissions from Light-Duty Vehicles (China VI)" (GB18352.6-2016), domestic fuel vehicles are required to meet this standard. At the same time, new requirements are put forward for the emissions of the vehicle itself and the emissions during the refueling process.

[0003] To ensure that emissions from vehicles during refueling meet the aforementioned standards, newly manufactured vehicles need to be equipped with an Onboard Refueling Vapor Recovery (ORVR) system. The ORVR system uses a carbon canister to adsorb the fuel vapors generated during refueling or due to temperature differences in the fuel tank. The ORVR system also has a desorption function, which can desorb the adsorbed fuel vapors and send them into the internal combustion engine for combustion, thus achieving recycling and reducing pollutant emissions.

[0004] In order for the ORVR system's built-in carbon canister to absorb the fuel vapors in the fuel tank, the ORVR system needs to improve the original fuel tank and pipeline. One method is to reduce the diameter of the fuel inlet pipe to achieve a liquid seal during the refueling process, so that the carbon canister can absorb the fuel vapors in the fuel tank and prevent the fuel vapors from overflowing from the refueling port.

[0005] Currently, the fuel nozzles used in China are environmentally friendly secondary vapor recovery fuel nozzles. These nozzles absorb the vapors in the car's fuel tank while refueling the car, and can be used in cars that are not equipped with an ORVR system.

[0006] However, this type of fuel nozzle is not suitable for cars equipped with an ORVR system. Due to the liquid seal of the car's ORVR system, the vacuum pump in the refueling equipment cannot recover the fuel vapors inside the car. During the refueling process, the fuel nozzle will draw outside air into the underground fuel storage tank, forming an equal volume of fuel vapors. The fuel vapors will be discharged outward through the vent pipe, polluting the environment and causing more serious pollution problems.

[0007] However, there are cars in society that do not have ORVR systems and cars that do have ORVR systems. If the existing secondary vapor recovery refueling nozzles are directly replaced with nozzles that are compatible with ORVR systems, the existing secondary vapor recovery refueling nozzles will no longer be usable, resulting in a large waste of resources. At the same time, when refueling cars that do not have ORVR systems, there will be vapor spillage, causing serious pollution problems.

[0008] If the fuel nozzle is not replaced with one compatible with the ORVR system, serious pollution problems will occur when refueling vehicles equipped with the ORVR system. Therefore, inventing a refueling device that can adjust the refueling method of the secondary vapor recovery fuel nozzle according to the type of vehicle is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] To address the aforementioned problems in the existing technology, this invention provides an ORVR refueling hose to solve the technical problem that existing secondary vapor recovery refueling nozzles cannot be simultaneously applied to the refueling needs of vehicles with and without ORVR systems.

[0010] This invention is specifically implemented through the following technical solutions:

[0011] An ORVR refueling hose includes an ORVR valve, a fuel nozzle connector, and a hose connector;

[0012] The ORVR valve includes a valve body, a first valve core, and a drive unit;

[0013] The valve body is equipped with non-interconnected refueling channels and oil and gas recovery channels.

[0014] The first valve core is movably disposed at the oil and gas recovery channel, the drive unit is disposed in the valve body, and the actuating end of the drive unit is connected to the first valve core for driving the first valve core to open / close the oil and gas recovery channel.

[0015] The oil gun connector is located at the oil outlet end of the ORVR valve;

[0016] The oil pipe joint is located at the oil inlet end of the ORVR valve.

[0017] To better realize the present invention, the above structure is further optimized, and the driving part includes a diaphragm and a return spring A;

[0018] The valve body is provided with a negative pressure chamber, and the oil and gas recovery channel is connected to the negative pressure chamber through channel A. A sliding hole is provided directly below the negative pressure chamber. The sliding hole is perpendicular to the oil and gas recovery channel, and the shape of the sliding hole matches the cross-sectional shape of the first valve core. The first valve core is slidably disposed in the sliding hole along the axial direction of the sliding hole.

[0019] The edge of the diaphragm is connected and sealed to the edge of the negative pressure chamber. One end of the first valve core is connected to the middle of the diaphragm. The return spring A is disposed between the first valve core and the diaphragm, and the two ends of the return spring A abut against the bottom wall of the diaphragm and the negative pressure chamber, respectively.

[0020] To better realize the present invention, further optimizations are made to the above structure, and the ORVR valve further includes a sealing seat and a second valve core;

[0021] A settling groove is provided on the side of the valve body away from the negative pressure chamber, and the oil and gas recovery channel is connected to the settling groove through channel B;

[0022] The sealing seat is disposed at the opening of the settling tank, and a valve port is provided in the middle of the sealing seat. The second valve core is movably disposed at the valve port, and the first valve core and the second valve core are connected in a driving connection.

[0023] When the diaphragm drives the first valve core to close the oil and gas recovery channel, the first valve core will push the second valve core away from the valve port, thereby opening the valve port.

[0024] To better realize the present invention, further optimization is made to the above structure. A locking part is provided at one end of the second valve core near the first valve core. A return spring B is provided between the locking part and the sealing seat. The two ends of the return spring B abut against the locking part and the sealing seat, respectively.

[0025] To better realize the present invention, the above structure is further optimized by making the sealing surface of the sealing seat be inclined, and a sealing ring is provided on the sealing surface of the second valve core.

[0026] To better realize the present invention, the above structure is further optimized. A return spring C is provided between the first valve core and the sealing seat, and the two ends of the return spring C abut against the first valve core and the sealing seat respectively.

[0027] To better realize the present invention, the above structure is further optimized by providing a protective sleeve on the outside of the valve body.

[0028] To better realize the present invention, the above structure is further optimized, and oil and gas extension pipe A and oil and gas extension pipe B are respectively provided at both ends of the oil and gas recovery channel.

[0029] The end of the oil and gas extension pipe A away from the oil and gas recovery channel is used to connect to the refueling nozzle.

[0030] The end of the oil and gas extension pipe B that is away from the oil and gas recovery channel is connected to the refueling pipe.

[0031] To better realize the present invention, the above structure is further optimized by providing oil extension pipe A and oil extension pipe B at both ends of the refueling channel.

[0032] The end of the oil extension pipe A away from the refueling channel is used to connect to the refueling nozzle, and the oil and gas extension pipe A is located inside the oil extension pipe A;

[0033] The end of the oil extension pipe B away from the refueling channel is used to connect to the refueling pipe, and the oil and gas extension pipe B is located inside the oil extension pipe B.

[0034] To better realize the present invention, the above structure is further optimized, and the valve body is made of aluminum alloy.

[0035] In summary, the present invention has the following technical effects:

[0036] The ORVR valve in this ORVR refueling hose can open / close the vapor recovery channel according to the type of vehicle, making it suitable for both vehicles with and without ORVR systems. When refueling a vehicle without an ORVR system, the vapor recovery channel is open, allowing the vacuum pump in the refueling equipment to recover the vapors in the fuel tank and prevent vapor spillage. When refueling a vehicle with an ORVR system, the vapor recovery channel is closed, preventing the vacuum pump in the refueling equipment from drawing outside air into the fuel tank, thus avoiding the generation of more vapors and serious pollution problems. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of an ORVR refueling pipe according to the present invention;

[0039] Figure 2 This is a cross-sectional view of an ORVR refueling pipe with the oil and gas recovery channel in the open state, according to the present invention.

[0040] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0041] Figure 4 This is a diagram showing the fit between the diaphragm and the first valve core in an ORVR refueling pipe according to the present invention.

[0042] Figure 5 This is a diagram showing the fit between the sealing seat and the second valve core in an ORVR refueling pipe according to the present invention.

[0043] Figure 6 This is a cross-sectional view of an ORVR refueling pipe in the present invention with the oil and gas recovery channel in a closed state.

[0044] Figure label:

[0045] 1. ORVR valve; 11. Valve body; 111. Refueling channel; 112. Oil vapor recovery channel; 113. Negative pressure chamber; 114. Sliding hole; 115. Settling groove; 116. Connecting part; 117. Extension part; 12. First valve core; 13. Drive part; 131. Diaphragm; 132. Return spring A; 14. Sealing seat; 15. Second valve core; 151. Sealing ring; 16. Return spring B; 17. Return spring C; 18. Protective sleeve; 191. Channel A; 192. Channel B;

[0046] 2. Oil gun connector; 21. Bushing; 22. Rotary joint; 23. Snap ring; 241. Seal A; 242. Seal B; 243. Seal C;

[0047] 3. Oil pipe joint; 31. Clamping part. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Example:

[0052] like Figures 1 to 6 As shown:

[0053] An ORVR refueling hose includes an ORVR valve 1, a fuel nozzle connector 2, and a hose connector 3; wherein,

[0054] ORVR valve 1 includes valve body 11, first valve core 12 and drive unit 13;

[0055] The valve body 11 is provided with a non-interconnected refueling channel 111 and an oil and gas recovery channel 112;

[0056] The first valve core 12 is movably disposed in the oil and gas recovery channel 112, and the drive unit 13 is disposed in the valve body 11. The actuating end of the drive unit 13 is connected to the first valve core 12 for driving the first valve core 12 to open / close the oil and gas recovery channel 112.

[0057] The oil gun connector 2 is located at the oil outlet end of the ORVR valve 1 and is used to connect to the oil gun;

[0058] Oil pipe connector 3 is located at the oil inlet end of ORVR valve 1 and is used to connect to the oil filling pipe.

[0059] The ORVR valve 1 in the ORVR refueling pipe can open / close the vapor recovery channel 112 according to the type of vehicle, making it suitable for both vehicles with and without an ORVR system. When refueling a vehicle without an ORVR system, the vapor recovery channel 112 is open, allowing the vacuum pump in the refueling equipment to recover the vapors in the fuel tank and prevent vapor spillage. When refueling a vehicle with an ORVR system, the vapor recovery channel 112 is closed, preventing the vacuum pump in the refueling equipment from drawing outside air into the fuel tank, thus avoiding the generation of more vapors and serious pollution problems.

[0060] It should be noted that the types of vehicles mentioned above refer to vehicles equipped with ORVR systems and vehicles without ORVR systems.

[0061] Preferably, the valve body 11 is made of lightweight aluminum alloy to make the ORVR refueling hose lighter and more convenient to use.

[0062] In an optimized configuration, the aforementioned drive unit 13 includes a diaphragm 131 and a return spring A132; wherein,

[0063] A negative pressure chamber 113 is provided in the valve body 11. The oil and gas recovery channel 112 is connected to the negative pressure chamber 113 through channel A191. A sliding hole 114 is provided directly below the negative pressure chamber 113. The sliding hole 114 is perpendicular to the oil and gas recovery channel 112, and the shape of the sliding hole 114 matches the cross-sectional shape of the first valve core 12. The first valve core 12 is slidably disposed in the sliding hole 114 along the axial direction of the sliding hole 114.

[0064] The edge of the diaphragm 131 is connected and sealed to the edge of the negative pressure chamber 113. One end of the first valve core 12 is connected to the middle of the diaphragm 131. The return spring A132 is disposed between the first valve core 12 and the diaphragm 131, and the two ends of the return spring A132 abut against the bottom wall of the diaphragm 131 and the negative pressure chamber 113, respectively.

[0065] When refueling a car equipped with an ORVR system, due to the reduced diameter of the fuel inlet pipe in the fuel tank, a negative pressure is formed between the opening of the fuel inlet pipe and the fuel nozzle. This negative pressure is transmitted to the negative pressure chamber 113 through the vapor recovery channel 112 and channel A191, causing the middle part of the diaphragm 131 to be adsorbed and moved downward. At this time, the first valve core 12 is pushed downward by the diaphragm 131 and blocks the vapor recovery channel 112, keeping the vapor recovery channel 112 in a closed state. The vacuum pump in the refueling equipment is then unable to draw outside air into the fuel tank.

[0066] When refueling is completed and the staff removes the refueling nozzle from the opening of the inlet pipe, the negative pressure at the refueling nozzle's nozzle disappears, and the diaphragm 131 returns to its initial position under the action of the return spring A132. The diaphragm 131 then drives the first valve core 12 to move upward, opening the vapor recovery channel 112. In this state, the refueling nozzle can be used to refuel cars that do not have an ORVR system.

[0067] It should be noted that when the fuel nozzle is inserted into the opening of the fuel inlet pipe, the negative pressure between the opening of the fuel inlet pipe and the fuel nozzle gradually increases. When the negative pressure is greater than the restoring force of the return spring A132, the middle part of the diaphragm 131 will overcome the restoring force of the return spring A132 and move downward, thereby driving the first valve core 12 to move.

[0068] Preferably, the diaphragm 131 is made of fluororubber, which is highly durable, thus improving the service life of the ORVR refueling hose.

[0069] The optimized ORVR refueling pipe also includes a sealing seat 14 and a second valve core 15; wherein,

[0070] A settling groove 115 is provided on the side of the valve body 11 away from the negative pressure chamber 113, and the oil and gas recovery channel 112 is connected to the settling groove 115 through channel B192;

[0071] The sealing seat 14 is set at the opening of the settling tank 115, and a valve port is provided in the middle of the sealing seat 14. The second valve core 15 is movably set at the valve port, and the first valve core 12 and the second valve core 15 are connected in a transmission manner.

[0072] When the diaphragm 131 drives the first valve core 12 to close the oil and gas recovery channel 112, the first valve core 12 will push the second valve core 15 away from the valve port, causing the valve port to open. Outside air will then enter the sink 115 through the valve port, maintaining the negative pressure between the opening of the oil inlet pipe and the filling port of the refueling nozzle within a fixed range. This is to avoid the problem of frequent nozzle disconnection during the refueling process caused by excessive negative pressure between the opening of the oil inlet pipe and the filling port of the refueling nozzle.

[0073] It should be noted that maintaining the negative pressure within a fixed range means that the negative pressure is greater than the restoring force of the return spring A132 and less than the nozzle tripping pressure, so as to maintain the normal operation of the fuel nozzle when refueling a car with an ORVR system.

[0074] In an optimized configuration, the second valve core 15 is provided with a locking part at one end near the first valve core 12, and a return spring B16 is provided between the locking part and the sealing seat 14, with the two ends of the return spring B16 abutting against the locking part and the sealing seat 14 respectively.

[0075] When the diaphragm 131 moves the first valve core 12 away from the oil and gas recovery channel 112 under the action of the return spring A132, the force of the first valve core 12 on the second valve core 15 will also be eliminated. At this time, the second valve core 15 will be blocked at the valve port under the action of the return spring B16.

[0076] Preferably, the sealing surface of the sealing seat 14 is an inclined surface, and a sealing ring 151 is provided on the sealing surface of the second valve core 15 to improve the sealing effect of the second valve core 15.

[0077] In an optimized configuration, a return spring C17 is provided between the first valve core 12 and the sealing seat 14. The two ends of the return spring C17 abut against the first valve core 12 and the sealing seat 14, respectively. The return spring C17 can accelerate the reset of the first valve core 12, making the use of the ORVR refueling hose more convenient.

[0078] In an optimized configuration, a protective sleeve 18 is provided on the outside of the valve body 11. The protective sleeve 18 can provide a certain degree of protection for the valve body 11, thereby improving the service life of the ORVR refueling hose.

[0079] In an optimized manner, oil and gas recovery channel 112 is provided with oil and gas extension pipe A1161 and oil and gas extension pipe B1162 at both ends; oil extension pipe A1171 and oil extension pipe B1172 are provided at both ends of refueling channel 111.

[0080] Oil and gas extension pipe A1161, oil and gas extension pipe B1162, oil extension pipe A1171 and oil extension pipe B1172 are all tubular structures. The end of oil and gas extension pipe A1161 away from oil and gas recovery channel 112 and the end of oil extension pipe A1171 away from oil and gas recovery channel 112 are both used to connect to the refueling nozzle, and oil and gas extension pipe A1161 is located inside oil extension pipe A1171.

[0081] The end of the oil and gas extension pipe B1162 away from the oil and gas recovery channel 112 and the end of the oil extension pipe B1172 away from the oil and gas recovery channel 112 are both used to connect to the refueling pipe, and the oil and gas extension pipe B1162 is located inside the oil extension pipe B1172.

[0082] The optimized oil gun connector 2 described above comprises a seal A241, a snap ring 23, a seal B242, a bushing 21, and a rotary joint 22, etc.; wherein,

[0083] The bushing 21 is fixedly sleeved on the outer wall of the oil extension pipe A1171, and the rotary joint 22 is sleeved on the outside of the bushing 21. The end of the rotary joint 22 away from the valve body 11 is secured by the snap ring 23, so that the rotary joint 22 can rotate freely on the oil extension pipe A1171, but cannot slide along the radial direction of the oil extension pipe A1171.

[0084] Seals A241 and B242 are respectively fitted onto the outer and inner walls of the rotary joint 22, and the oil gun is connected to the oil outlet of the valve body 11 through the rotary joint 22.

[0085] The rotating joint 22 is designed to allow the fuel nozzle to rotate freely, making it more convenient to use.

[0086] Preferably, the fuel nozzle connector 2 also includes a sealing element C243, which is sleeved on the outer wall of the fuel inlet of the fuel extension pipe A1161 to achieve a good sealing effect and prevent gasoline and fuel gas from mixing inside the ORVR valve 1.

[0087] It should be noted that the above-mentioned seals A241, B242 and C243 are all made of rubber.

[0088] In an optimized manner, the outer wall of the oil extension pipe B1172 is provided with an anti-loosening part A, and the outer ring of the oil extension pipe B1172 is provided with a clamping part 31. The end of the oil pipe in the refueling pipe is squeezed by the clamping part 31 and securely sleeved on the connecting part 116, so that the connection between the oil pipe in the refueling pipe and the valve body 11 is more stable.

[0089] An anti-loosening part B is provided at the oil and gas outlet of the oil extension pipe B1172. The end of the oil and gas pipe in the refueling pipe is securely fitted to the oil and gas outlet of the oil extension pipe B1172 through the anti-loosening part B.

[0090] It should be noted that the anti-loosening parts A and B mentioned above are barbs extending in a direction away from the axis of the valve body 11. They can increase the tightness of the connection between the oil pipe and the gas pipe in the refueling pipe and the valve body 11, so as to prevent the oil pipe and the gas pipe in the refueling pipe from separating from the valve body 11.

[0091] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ORVR refueling hose, characterized in that: Includes ORVR valve (1), oil gun connector (2) and oil pipe connector (3); The ORVR valve (1) includes a valve body (11), a first valve core (12), and a drive unit (13). The valve body (11) is provided with a non-interconnected refueling channel (111) and an oil and gas recovery channel (112). The first valve core (12) is movably disposed at the oil and gas recovery channel (112), the drive unit (13) is disposed in the valve body (11), and the actuating end of the drive unit (13) is connected to the first valve core (12) for driving the first valve core (12) to open / close the oil and gas recovery channel (112); The oil gun connector (2) is located at the oil outlet end of the ORVR valve (1); The oil pipe joint (3) is located at the oil inlet end of the ORVR valve (1); The drive unit (13) includes a diaphragm (131) and a return spring A (132). The valve body (11) is provided with a negative pressure chamber (113). The oil and gas recovery channel (112) is connected to the negative pressure chamber (113) through channel A (191). A sliding hole (114) is provided directly below the negative pressure chamber (113). The sliding hole (114) is perpendicular to the oil and gas recovery channel (112), and the shape of the sliding hole (114) matches the cross-sectional shape of the first valve core (12). The first valve core (12) is slidably disposed in the sliding hole (114) along the axial direction of the sliding hole (114). The edge of the diaphragm (131) is connected and sealed to the edge of the negative pressure chamber (113). One end of the first valve core (12) is connected to the middle of the diaphragm (131). The return spring A (132) is disposed between the first valve core (12) and the diaphragm (131), and the two ends of the return spring A (132) abut against the bottom wall of the diaphragm (131) and the negative pressure chamber (113), respectively. The ORVR valve (1) also includes a sealing seat (14) and a second valve core (15); A settling groove (115) is provided on the side of the valve body (11) away from the negative pressure chamber (113), and the oil and gas recovery channel (112) is connected to the settling groove (115) through channel B (192); The sealing seat (14) is disposed at the opening of the sink (115), and a valve port is provided in the middle of the sealing seat (14). The second valve core (15) is movably disposed at the valve port, and the first valve core (12) and the second valve core (15) are connected in a transmission manner. When the diaphragm (131) drives the first valve core (12) to close the oil and gas recovery channel (112), the first valve core (12) will push the second valve core (15) away from the valve port, thereby opening the valve port; The second valve core (15) has a locking part at one end near the first valve core (12), and a return spring B (16) is provided between the locking part and the sealing seat (14). The two ends of the return spring B (16) abut against the locking part and the sealing seat (14) respectively. The sealing surface of the sealing seat (14) is an inclined surface, and a sealing ring (151) is provided on the sealing surface of the second valve core (15). A return spring C (17) is provided between the first valve core (12) and the sealing seat (14), with the two ends of the return spring C (17) abutting against the first valve core (12) and the sealing seat (14) respectively.

2. The ORVR refueling hose according to claim 1, characterized in that: The valve body (11) is provided with a protective sleeve (18).

3. The ORVR refueling hose according to claim 2, characterized in that: The oil and gas recovery channel (112) is provided with oil and gas extension pipe A (1161) and oil and gas extension pipe B (1162) at both ends respectively. The end of the oil and gas extension pipe A (1161) away from the oil and gas recovery channel (112) is used to connect to the refueling nozzle; The end of the oil and gas extension pipe B (1162) away from the oil and gas recovery channel (112) is connected to the refueling pipe.

4. The ORVR refueling hose according to claim 3, characterized in that: The two ends of the refueling channel (111) are respectively provided with oil extension pipe A (1171) and oil extension pipe B (1172). The end of the oil extension pipe A (1171) away from the refueling channel (111) is used to connect to the refueling gun, and the oil and gas extension pipe A (1161) is located inside the oil extension pipe A (1171). The end of the oil extension pipe B (1172) away from the refueling channel (111) is used to connect to the refueling pipe, and the oil and gas extension pipe B (1162) is located inside the oil extension pipe B (1172).

5. The ORVR refueling hose according to claim 4, characterized in that: The valve body (11) is made of aluminum alloy.

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