CN220956956U

CN220956956U - ORVR valve

Info

Publication number: CN220956956U
Application number: CN202322771910.7U
Authority: CN
Inventors: 宋东辉
Original assignee: Hunan Jiuwei Environmental Protection Technology Co ltd
Current assignee: Hunan Jiuwei Environmental Protection Technology Co ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-05-14
Anticipated expiration: 2033-10-16

Abstract

The utility model belongs to the technical field of oil gas recovery equipment of gas stations, and particularly relates to an ORVR valve; the valve comprises a valve body, a first valve core and a driving part; the valve body is provided with a refueling channel and an oil gas recovery channel; the first valve core is arranged at the oil gas recovery channel, and the driving part is arranged in the valve body and is in transmission connection with the first valve core. The ORVR valve can realize the opening/closing of the oil gas recovery channel according to the types of automobiles, so that the ORVR valve can be simultaneously suitable for the oiling requirements of automobiles with ORVR systems and automobiles without ORVR systems; when the automobile without the ORVR system is refueled, the oil gas recovery channel is opened, so that the vacuum pump in the refueled equipment can recover the oil gas in the oil tank, and the overflow of the oil gas is avoided; when the automobile with the ORVR system is refueled, the oil gas recovery channel is closed, and the vacuum pump in the refueled equipment cannot suck outside air into the oil storage tank, so that the serious pollution problem caused by the generation of more oil gas is avoided.

Description

ORVR valve

Technical Field

The utility model belongs to the technical field of oil gas recovery equipment of gas stations, and particularly relates to an ORVR valve.

Background

According to the regulations of the light automobile pollutant emission limit value and the measurement method (the sixth stage of China) (GB 18352.6-2016), the emission of the national diesel locomotive is required to reach the standard, and meanwhile, new requirements are put forward for the emission of the automobile and the emission in the oiling process.

In order to make the emission of the automobile in the refueling process reach the standard, the newly produced automobile needs to be provided with an onboard refueling oil gas recovery system (Onboard Refueling Vapor Recovery, ORVR for short), and the carbon tank of the ORVR system is used for adsorbing the oil gas generated by factors such as temperature difference of an automobile fuel tank or the like during refueling; the ORVR system has a desorption function, can desorb and send the adsorbed oil gas into an internal combustion engine for combustion, realizes recycling and reduces pollutant emission;

In order to enable the carbon tank of the ORVR system to absorb oil gas in the oil tank, the ORVR system needs to improve the original oil tank and pipelines, wherein one method is to reduce the diameter of an oil inlet pipe, realize liquid sealing in the oiling process, enable the carbon tank to absorb the oil gas in the oil tank, and enable the oil gas not to overflow from an oil filling port.

At present, the fuel gun used in China is a secondary fuel gas recycling fuel gun with environmental protection requirement, and the fuel gun can absorb fuel gas in a fuel tank of an automobile during the process of filling fuel into the automobile, so that the fuel gun can be used for the automobile which is not provided with an ORVR system;

But such guns are not suitable for automobiles with ORVR systems; because the vacuum pump in the oiling equipment can not retrieve the oil gas in the car because the influence of the liquid seal of car ORVR system, in the oiling process, the oil gun then can form equal volume's oil gas with the air suction of external world to underground oil storage tank, and the oil gas can pollute the environment through the outward discharge of evacuation pipe, causes more serious pollution problem.

In the society, an automobile without an ORVR system and an automobile with the ORVR system exist at the same time, if the existing secondary oil and gas recovery oil gun is directly replaced by an oil gun which can be suitable for the ORVR system, the existing secondary oil and gas recovery oil gun cannot be used continuously, so that a great amount of resources are wasted, and meanwhile, oil and gas overflows when the automobile without the ORVR system is refueled, so that serious pollution is caused;

If the oil gun applicable to the ORVR system is not replaced, serious pollution problems are caused when the automobile with the ORVR system is refueled. Therefore, the invention provides a refueling device capable of adjusting the refueling mode of the secondary fuel gas recovery refueling gun according to the type of the automobile, and the refueling device is a technical problem to be solved urgently by a person skilled in the art.

Disclosure of utility model

In order to solve the problems in the prior art, the utility model provides an ORVR valve to solve the technical problem that a secondary fuel gas recovery fuel gun in the prior art cannot be simultaneously applied to the fuel filling requirements of an automobile with an ORVR system and an automobile without the ORVR system.

The utility model is realized by the following technical scheme:

An ORVR valve includes a valve body, a first valve spool, and a drive portion;

The valve body is provided with a refueling channel and an oil gas recovery channel which are not communicated with each other;

The first valve core is movably arranged at the oil gas recovery channel, the driving part is arranged in the valve body, and the action end of the driving part is in transmission connection with the first valve core and is used for driving the first valve core to act so as to realize the opening/closing of the oil gas recovery channel.

In order to better implement the present utility model, further optimization is made in the above structure, the driving part includes a diaphragm and a return spring a;

The valve body is internally provided with a negative pressure cavity, the oil gas recovery channel is communicated with the negative pressure cavity through a channel A, a sliding hole is arranged right below the negative pressure cavity, the sliding hole is vertically staggered with the oil gas recovery channel, the shape of the sliding hole is matched with the cross section shape of the first valve core, and the first valve core is arranged in the sliding hole in a sliding manner along the axial direction of the sliding hole;

The edge of the diaphragm is connected and sealed with the edge of the negative pressure cavity, one end of the first valve core is connected with the middle part of the diaphragm, the reset spring A is arranged between the first valve core and the diaphragm, and two ends of the reset spring A are respectively propped against the diaphragm and the bottom wall of the negative pressure cavity.

For better implementation of the utility model, further optimization is made in the above structure, and the ORVR valve further includes a sealing seat and a second valve core;

A sinking groove is formed in one side, away from the negative pressure cavity, of the valve body, and the oil gas recovery channel is communicated with the sinking groove through a channel B;

The sealing seat is arranged at the notch of the sink groove, a valve port is arranged in the middle of the sealing seat, the second valve core is movably arranged at the valve port, and the first valve core is in transmission connection with the second valve core;

When the diaphragm drives the first valve core to act to close the oil gas recovery channel, the first valve core can push the second valve core to a direction away from the valve port, so that the valve port is opened.

In order to better realize the utility model, the structure is further optimized, one end of the second valve core, which is close to the first valve core, is provided with a clamping part, a return spring B is arranged between the clamping part and the sealing seat, and two ends of the return spring B are respectively propped against the clamping part and the sealing seat.

In order to better realize the utility model, the structure is further optimized, the sealing surface of the sealing seat is an inclined surface, and the sealing surface of the second valve core is provided with a sealing ring.

In order to better realize the utility model, in the structure, the return spring C is arranged between the first valve core and the sealing seat, and two ends of the return spring C are respectively propped against the first valve core and the sealing seat.

In order to better realize the utility model, the structure is further optimized, and the outer part of the valve body is provided with a protective sleeve.

In order to better realize the utility model, the structure is further optimized, and the oil outlet end of the valve body is provided with an oil gas extension pipe which is convenient to be inserted on the oil gun; and the outer side wall of the oil gas extension pipe is provided with a sealing gasket.

In order to better realize the utility model, the structure is further optimized, and the outer side wall of the oil outlet end of the valve body is provided with external threads which are convenient to connect with the oil gun; the oil inlet end of the valve body is provided with a mounting hole, and the inner side wall of the mounting hole is provided with an internal thread which is convenient to be connected with an oil filling pipe.

In order to better implement the utility model, a further optimization is made in the above structure, and the valve body is made of aluminum alloy.

In summary, the utility model has the following technical effects:

The ORVR valve can realize the opening/closing of the oil gas recovery channel according to the types of automobiles, so that the ORVR valve can be simultaneously suitable for the oiling requirements of automobiles with ORVR systems and automobiles without ORVR systems; when the automobile without the ORVR system is refueled, the oil gas recovery channel is opened, so that the vacuum pump in the refueled equipment can recover the oil gas in the oil tank, and the overflow of the oil gas is avoided; when the automobile with the ORVR system is refueled, the oil gas recovery channel is closed, and the vacuum pump in the refueled equipment cannot suck outside air into the oil storage tank, so that the serious pollution problem caused by the generation of more oil gas is avoided.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the oil outlet end of an ORVR valve of the present utility model;

FIG. 2 is a schematic illustration of the structure of the oil inlet end of an ORVR valve of the present utility model;

FIG. 3 is a cross-sectional view of an ORVR valve with the oil and gas recovery passage open in accordance with the present utility model;

fig. 4 is a partial enlarged view of a portion a in fig. 3;

FIG. 5 is a diagram of the engagement of a diaphragm with a first valve element in an ORVR valve in accordance with the present utility model;

FIG. 6 is a diagram of the mating of a seal seat and a second valve element in an ORVR valve of the present utility model;

Fig. 7 is a cross-sectional view of an ORVR valve of the present utility model with the oil and gas recovery passage closed.

Reference numerals:

1. A valve body; 11. a fueling channel; 12. an oil gas recovery channel; 13. a negative pressure chamber; 14. a slide hole; 15. sinking grooves; 16. an oil gas extension pipe; 17. a mounting hole;

2. A first valve core;

3. a driving section; 31. a diaphragm; 32. a return spring A;

4. A sealing seat;

5. a second valve core; 51. a seal ring;

6. A return spring B;

7. A return spring C;

8. a protective sleeve;

91. a channel A; 92. channel B.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

Examples:

As shown in fig. 1 to 7:

An ORVR valve comprising a valve body 1, a first spool 2 and a drive 3; wherein,

The valve body 1 is provided with a refueling channel 11 and an oil gas recovery channel 12 which are not communicated with each other;

the first valve core 2 is movably arranged at the oil gas recovery channel 12, the driving part 3 is arranged in the valve body 1, and the action end of the driving part 3 is in transmission connection with the first valve core 2 and is used for driving the first valve core 2 to act so as to realize the opening/closing of the oil gas recovery channel 12.

The ORVR valve can realize the opening/closing of the oil gas recovery channel 12 according to the types of automobiles, so that the ORVR valve can be simultaneously suitable for the oiling requirements of automobiles with ORVR systems and automobiles without ORVR systems; when the automobile without the ORVR system is refueled, the oil gas recovery channel 12 is opened, so that the vacuum pump in the refueled equipment can recover the oil gas in the oil tank, and the overflow of the oil gas is avoided;

When the automobile with the ORVR system is refueled, the oil gas recovery channel 12 is closed, and the vacuum pump in the refueled equipment cannot suck outside air into the oil storage tank, so that serious pollution problems caused by the generation of more oil gas are avoided.

The above-mentioned types of automobiles refer to automobiles with an ORVR system and automobiles without an ORVR system.

Preferably, the valve body 1 is made of a lightweight aluminum alloy, so that the ORVR valve is lighter and more convenient to use.

Preferably, the driving part 3 includes a diaphragm 31 and a return spring a32; wherein,

The valve body 1 is provided with a negative pressure cavity 13, the oil gas recovery channel 12 is communicated with the negative pressure cavity 13 through a channel A91, a slide hole 14 is arranged right below the negative pressure cavity 13, the slide hole 14 is vertically staggered with the oil gas recovery channel 12, the shape of the slide hole 14 is matched with the cross section shape of the first valve core 2, and the first valve core 2 is arranged in the slide hole 14 in a sliding manner along the axis direction of the slide hole 14;

The edge of the diaphragm 31 is connected and sealed with the edge of the negative pressure cavity 13, one end of the first valve core 2 is connected with the middle part of the diaphragm 31, the reset spring A32 is arranged between the first valve core 2 and the diaphragm 31, and two ends of the reset spring A32 are respectively propped against the bottom walls of the diaphragm 31 and the negative pressure cavity 13;

When the automobile with the ORVR system is refueled, as the caliber of the oil inlet pipeline of the oil tank is improved to be small, negative pressure is formed between the opening of the oil inlet pipeline and the oil filling port of the oil filling gun, the negative pressure is transmitted to the negative pressure cavity 13 through the oil gas recovery channel 12 and the channel A91, the middle part of the diaphragm 31 is adsorbed to move downwards, at the moment, the first valve core 2 is pushed by the diaphragm 31 to move downwards and block the oil gas recovery channel 12, the oil gas recovery channel 12 is in a closed state, and the vacuum pump in the oil filling equipment cannot suck the outside air into the oil storage tank.

When the oiling is completed and the worker takes out the oiling gun from the opening of the oil inlet pipeline, the negative pressure at the oiling port of the oiling gun disappears, the diaphragm 31 can be restored to the initial position under the action of the reset spring A32, and the diaphragm 31 can drive the first valve core 2 to move upwards, so that the oil gas recovery channel 12 is in an open state; in this state, the fuel dispenser may be used to fuel an automobile that does not have an ORVR system.

When the fuel gun is inserted into the opening of the fuel inlet pipe, the negative pressure between the opening of the fuel inlet pipe and the fuel inlet of the fuel gun is gradually increased, and when the negative pressure is greater than the restoring force of the restoring spring a32, the middle part of the diaphragm 31 moves downwards against the restoring force of the restoring spring a32, and drives the first valve core 2 to act.

Preferably, the diaphragm 31 is made of fluororubber, which has a high durability to improve the service life of the ORVR valve.

Preferably, the ORVR valve further comprises a sealing seat 4 and a second valve core 5; wherein,

A sinking groove 15 is arranged on one side of the valve body 1 far away from the negative pressure cavity 13, and the oil gas recovery channel 12 is communicated with the sinking groove 15 through a channel B92;

The sealing seat 4 is arranged at the notch of the sinking groove 15, a valve port is arranged in the middle of the sealing seat 4, the second valve core 5 is movably arranged at the valve port, and the first valve core 2 is in transmission connection with the second valve core 5;

When the diaphragm 31 drives the first valve core 2 to act to close the oil gas recovery channel 12, the first valve core 2 can push the second valve core 5 to a direction far away from the valve port, so that the valve port is opened, external air can enter the sink 15 from the valve port, the negative pressure between the opening of the oil inlet pipeline and the oil filling port of the oil filling gun is maintained within a fixed range, and the problem of frequent gun jump in the oil filling process caused by overlarge negative pressure between the opening of the oil inlet pipeline and the oil filling port of the oil filling gun is avoided.

It should be noted that maintaining the negative pressure within a fixed range refers to the negative pressure being greater than the restoring force of the return spring a32 and less than the jump gun pressure, so as to maintain the normal operation of the fuel dispenser when filling the fuel into the automobile with the ORVR system.

Optimally, one end of the second valve core 5, which is close to the first valve core 2, is provided with a clamping part, a reset spring B6 is arranged between the clamping part and the sealing seat 4, and two ends of the reset spring B6 are respectively propped against the clamping part and the sealing seat 4;

When the diaphragm 31 drives the first valve core 2 to move away from the oil gas recovery channel 12 under the action of the return spring A32, the acting force of the first valve core 2 on the second valve core 5 is also eliminated, and at the moment, the second valve core 5 is blocked at the valve port under the action of the return spring B6.

Preferably, the sealing surface of the sealing seat 4 is an inclined surface, and the sealing surface of the second valve element 5 is provided with a sealing ring 51, so as to improve the sealing effect of the second valve element 5.

Optimally, a return spring C7 is arranged between the first valve core 2 and the sealing seat 4, and two ends of the return spring C7 are respectively propped against the first valve core 2 and the sealing seat 4; the reset spring C7 can accelerate the reset of the first valve core 2, so that the ORVR valve is more convenient to use.

Optimally, the outside of the valve body 1 is provided with a protective sleeve 8, and the protective sleeve 8 can play a certain role in protecting the valve body 1 so as to prolong the service life of the ORVR valve.

Optimally, the oil outlet end of the valve body 1 is provided with an oil gas extension pipe 16 which is convenient to be inserted on the oil gun; the outer sidewall of the oil and gas extension tube 16 is provided with a sealing gasket to facilitate and stabilize the connection of the ORVR valve to the fuel nozzle.

Optimally, the outer side wall of the oil outlet end of the valve body 1 is provided with external threads which are convenient to connect with the oil gun;

The oil inlet end of the valve body 1 is provided with a mounting hole 17, and the inner side wall of the mounting hole 17 is provided with an internal thread which is convenient to be connected with an oil filling pipe, so that the ORVR valve is more convenient to be connected with an oil filling gun and the oil filling pipe.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An ORVR valve, characterized by: comprises a valve body (1), a first valve core (2) and a driving part (3);

the valve body (1) is provided with a refueling channel (11) and an oil gas recovery channel (12) which are not communicated with each other;

The oil gas recovery device comprises a valve body (1), a first valve core (2), a driving part (3) and a first valve core (2), wherein the first valve core (2) is movably arranged at the oil gas recovery channel (12), the driving part (3) is arranged in the valve body (1), and the action end of the driving part (3) is in transmission connection with the first valve core (2) and is used for driving the first valve core (2) to act so as to realize the opening/closing of the oil gas recovery channel (12).

2. The ORVR valve as set forth in claim 1, wherein: the driving part (3) comprises a diaphragm (31) and a return spring A (32);

The valve body (1) is internally provided with a negative pressure cavity (13), the oil gas recovery channel (12) is communicated with the negative pressure cavity (13) through a channel A (91), a sliding hole (14) is formed right below the negative pressure cavity (13), the sliding hole (14) is vertically staggered with the oil gas recovery channel (12), the shape of the sliding hole (14) is matched with the cross-section shape of the first valve core (2), and the first valve core (2) is slidably arranged in the sliding hole (14) along the axial direction of the sliding hole (14);

The edge of the diaphragm (31) is connected and sealed with the edge of the negative pressure cavity (13), one end of the first valve core (2) is connected with the middle part of the diaphragm (31), the reset spring A (32) is arranged between the first valve core (2) and the diaphragm (31), and two ends of the reset spring A (32) are respectively propped against the diaphragm (31) and the bottom wall of the negative pressure cavity (13).

3. The ORVR valve as set forth in claim 2, wherein: the valve further comprises a sealing seat (4) and a second valve core (5);

A sinking groove (15) is formed in one side, far away from the negative pressure cavity (13), of the valve body (1), and the oil gas recovery channel (12) is communicated with the sinking groove (15) through a channel B (92);

The sealing seat (4) is arranged at the notch of the sinking groove (15), a valve port is arranged in the middle of the sealing seat (4), the second valve core (5) is movably arranged at the valve port, and the first valve core (2) is in transmission connection with the second valve core (5);

When the diaphragm (31) drives the first valve core (2) to act to close the oil gas recovery channel (12), the first valve core (2) can push the second valve core (5) to a direction away from the valve port, so that the valve port is opened.

4. An ORVR valve as set forth in claim 3 wherein: the valve is characterized in that a clamping part is arranged at one end, close to the first valve core (2), of the second valve core (5), a return spring B (6) is arranged between the clamping part and the sealing seat (4), and two ends of the return spring B (6) are respectively propped against the clamping part and the sealing seat (4).

5. The ORVR valve as set forth in claim 4, wherein: the sealing surface of the sealing seat (4) is an inclined surface, and a sealing ring (51) is arranged on the sealing surface of the second valve core (5).

6. The ORVR valve as set forth in claim 4, wherein: a return spring C (7) is arranged between the first valve core (2) and the sealing seat (4), and two ends of the return spring C (7) are respectively propped against the first valve core (2) and the sealing seat (4).

7. The ORVR valve as set forth in any one of claims 1 to 6, wherein: the outside of valve body (1) is provided with protective sheath (8).

8. The ORVR valve as set forth in claim 1, wherein: the oil outlet end of the valve body (1) is provided with an oil gas extension pipe (16) which is convenient to be inserted on the oil gun; the outer side wall of the oil gas extension pipe (16) is provided with a sealing gasket.

9. The ORVR valve as set forth in claim 1, wherein: the outer side wall of the oil outlet end of the valve body (1) is provided with external threads which are convenient to connect with the oil gun; the oil inlet end of the valve body (1) is provided with a mounting hole (17), and the inner side wall of the mounting hole (17) is provided with an internal thread which is convenient to be connected with an oil filling pipe.

10. The ORVR valve as set forth in claim 1, wherein: the valve body (1) is made of an aluminum alloy.