CN216971994U

CN216971994U - Self-adaptive valve and oil gas recovery system

Info

Publication number: CN216971994U
Application number: CN202123339462.0U
Authority: CN
Inventors: 刘皞春; 陶永强
Original assignee: Tokheim Hengshan Technologies Guangzhou Co Ltd
Current assignee: Tokheim Hengshan Technologies Guangzhou Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-15
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the technical field of oil gas recovery, in particular to an adaptive valve and an oil gas recovery system. The utility model can be automatically adjusted in a negative pressure environment and can inhibit the pulsation of the gas circuit.

Description

Self-adaptive valve and oil gas recovery system

Technical Field

The utility model relates to the technical field of oil gas recovery, in particular to a self-adaptive valve and an oil gas recovery system.

Background

According to the national environmental protection requirement, gasoline vapor volatilized in the automobile refueling process is pumped back through the gasoline vapor recovery system and stored in an oil tank.

Most of oil gas recovery systems in the current market are provided with vortex shedding flowmeters to monitor gas-liquid ratio. In order to control the gas circuit pulsation range and avoid influencing the measurement precision of the vortex shedding flowmeter, an electro-proportional valve and a pressure stabilizing tank are generally adopted to suppress gas circuit pulsation, the adjusting technology of the electro-proportional valve is high in difficulty and high in production and manufacturing cost, an explosion-proof test is required, the traditional pressure stabilizing tank is large and heavy, trained professionals are required to operate and control the traditional pressure stabilizing tank, and pressure cannot be adjusted timely when oil gas is drifted. In the aspect of restraining gas circuit pulsation, most products in the market are designed and developed aiming at a positive pressure gas circuit, and the gas circuit of the oil gas recovery system is in a negative pressure environment.

The method used by the existing oil gas recovery system in the aspect of controlling the recovery efficiency is too complex, the efficiency control can be realized only by the operation of professional personnel, or the influence of gas pulsation interference on the recovery efficiency precision can not be eliminated due to too simple regulation and control mode.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model aims to: the self-adaptive valve can be automatically adjusted in a negative pressure environment, and air channel pulsation is restrained.

Another object of the present invention is to provide an oil gas recovery system, which has a simple structure, low cost and low operation difficulty.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a self-adaptation valve, including valve body shell and the main valve body, air inlet and gas outlet have been seted up to the valve body shell, the main valve body is installed at the valve body shell, guide way and air flue have been seted up in the valve body shell, the main valve body includes the case, go up the case cover, lower case cover, spring end cover and spring, the inner wall sealing connection of going up case cover and guide way, the spring end cover is installed at last case cover, the case is installed in last case cover, the one end of case is passed the spring end cover and is connected with lower case cover, lower case cover inserts in the air flue, through the air flue intercommunication between air inlet and the gas outlet, the spring suit is at the case, the one end of spring is contradicted with the outer extension portion of case, the other end is contradicted in the spring end cover.

Furthermore, the outer wall of the upper valve core sleeve is provided with a sealing groove, and a sealing ring is installed in the sealing groove.

Furthermore, the valve further comprises an adjusting device which comprises a threaded connecting shaft and an adjusting hand wheel, wherein one end of the threaded connecting shaft is installed on the upper valve core sleeve, the other end of the threaded connecting shaft penetrates out of the upper end of the valve body shell, and the adjusting hand wheel is fixed at the other end of the threaded connecting shaft.

Furthermore, adjusting device still includes holding screw, and holding screw passes valve body shell lateral wall and contradicts with threaded connection axle.

Furthermore, an O-shaped ring is arranged between the valve core shell and the threaded connecting shaft.

Furthermore, the air passage is provided with an adjusting hole, the lower valve core sleeve is in a round table shape, and one end with a small diameter is inserted into the adjusting hole.

Further, the air inlet is provided with a sealing gasket.

Further, the case of the valve core comprises a case body and a case cover, the upper end of the case body is provided with an opening, the case cover is arranged on the case body, and an O-shaped ring is arranged between the case body and the case cover.

The other purpose of the utility model is realized by the following technical scheme: the utility model provides an oil gas recovery system, includes recovery unit, vacuum pump and oil tank, and recovery unit, vacuum pump and oil tank connect gradually, and vacuum pump connection has the motor, and recovery unit includes oil gas recovery nozzle and foretell adaptive valve, and oil gas recovery nozzle is connected with the adaptive valve, and the adaptive valve is connected with the vacuum pump.

Furthermore, the number of the recovery devices is the same as that of the vacuum pumps, and each group of recovery devices are connected with the oil tank through the corresponding vacuum pumps.

Furthermore, the vacuum pump is a centralized vacuum pump, and all recovery devices are connected with the centralized vacuum pump.

Further, the recovery device also comprises a gas flow meter, and the gas flow meter is arranged between the oil gas recovery refueling gun and the self-adaptive valve.

Further, recovery unit still includes oil gas filter, and oil gas filter installs between oil gas recovery nozzle and the gas flowmeter.

In summary, the present invention has the following advantages: (1) the upper valve core sleeve, the lower valve core sleeve, the valve core and the spring form a floating mechanical structure, so that an overflowing space formed by the lower valve core sleeve and the adjusting hole changes along with the pulsation of the airflow pressure. When the pressure of the negative pressure air source is suddenly reduced, the valve core can move downwards along with the pressure of the negative pressure air source, and the overflowing space is reduced, so that the pulsation is prevented from being transmitted to the air inlet.

(2) The self-adaptive valve is of a pure mechanical structure, is simple in structure compared with an electromagnetic valve, is convenient to use, and can realize the control of flow only by rotating the adjusting hand wheel to change the position of the valve core.

(3) The oil gas recovery system is simple in structure, convenient to operate and high in oil gas recovery efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an adaptive valve of the present invention.

Fig. 2 is a top view of the present adaptive valve.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of embodiment 1 in the present oil and gas recovery system.

Fig. 5 is a schematic view of embodiment 2 in the present oil and gas recovery system.

Fig. 6 is a schematic view of embodiment 3 in the present oil and gas recovery system.

Wherein: 1 is a valve body shell, 1-1 is a shell, 1-2 is a shell cover, 1-3 is an air inlet, 1-3-1 is a sealing washer, 1-4 is an air outlet, 1-5 is a guide groove, 1-6 is an air passage, 1-7 is an adjusting hole, 2 is a main valve body, 2-1 is an upper valve core sleeve, 2-2 is a lower valve core sleeve, 2-3 is a valve core, 2-4 is a spring end cover, 2-5 is a spring, 2-6 is a sealing groove, 3 is an adjusting device, 3-1 is a threaded connecting shaft, 3-2 is an adjusting hand wheel, 3-3 is a set screw, 4 is an O-shaped ring, 5 is an oil gas recovery refueling gun, 6 is an oil gas filter, 7 is a gas flowmeter, 8 is a self-adaptive valve, 9 is a vacuum pump, 10 is an oil tank, 11 is a motor, 12 is an oil gas recovery pipeline, 13 is a centralized vacuum pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Example 1

As shown in fig. 1-3, a self-adaptive valve comprises a valve body housing 1 and a main valve body 2, wherein the valve body housing 1 is provided with an air inlet 1-3 and an air outlet 1-4, the main valve body 2 is installed on the valve body housing 1, and the self-adaptive valve is characterized in that: a guide groove 1-5 and an air passage 1-6 are arranged in a valve body shell 1, a main valve body 2 comprises a valve core 2-3, an upper valve core sleeve 2-1, a lower valve core sleeve 2-2, a spring end cover 2-4 and a spring 2-5, the upper valve core sleeve 2-1 is hermetically arranged in the guide groove 1-5, the spring end cover 2-4 is arranged in the upper valve core sleeve 2-1, the valve core 2-3 is arranged in the upper valve core sleeve 2-1, one end of the valve core 2-3 penetrates through the spring end cover 2-4 and is connected with the lower valve core sleeve 2-2, the lower valve core sleeve 2-2 is inserted into the air passage 1-6, an air inlet 1-3 and an air outlet 1-4 are respectively communicated with the air passage 1-6, the spring 2-5 is sleeved on the valve core 2-3, one end of the spring 2-5 is abutted against the outer extension part of the valve core 2-3, the other end is propped against the spring end cover 2-4.

In the embodiment, as shown in fig. 3, the air inlet 1-3 is horizontally arranged at the left side of the guide groove 1-5 and communicated with the guide groove 1-5, the guide groove 1-5 is positioned above the air passage 1-6, the adjusting hole 1-7 is arranged below the air passage 1-6, the air outlet 1-4 is horizontally arranged at the right side of the adjusting hole 1-7 and communicated with the adjusting hole 1-7, the lower valve core sleeve 2-2 is in a circular truncated cone shape, one end with a small diameter is inserted into the adjusting hole 1-7, a space for air to flow through is left after being inserted into the adjusting hole 1-7, when the air flow of the negative pressure air source pulsates, an acting force is generated on the lower valve core sleeve 2-2 to cause the spring 2-5 to drive the lower valve core sleeve 2-2 to move, so as to change the size of a gap between the lower valve core sleeve 2-2 and the adjusting hole 1-7, the stability of the air flow at the air inlets 1-4 is ensured, and the effect of self-adaptive airflow regulation pulsation is achieved.

The outer wall of the upper valve core sleeve 2-1 is provided with a sealing groove 2-6, a sealing ring can be arranged in the sealing groove 2-6 to ensure the air tightness of the guide groove 1-5 and the air channel 1-6, two ends of the upper valve core sleeve 2-1 are provided with mounting holes, the valve core 2-3 and the spring 2-5 are both arranged in the mounting hole at the lower end of the upper valve core sleeve 2-1, the self-adaptive valve also comprises an adjusting device 3, the adjusting device 3 comprises a threaded connecting shaft 3-1 and an adjusting hand wheel 3-2, one end of the threaded connecting shaft 3-1 is arranged in the mounting hole at the upper end of the upper valve core sleeve 2-1, the other end penetrates out of the upper end of the valve body shell 1, the adjusting hand wheel 3-2 is fixed at the other end of the threaded connecting shaft 3-1, in the embodiment, the valve core shell 1 comprises a shell 1-1 and a shell cover 1-2, the upper end of the shell 1-1 is provided with an opening, the shell cover 1-2 is arranged at the upper end of the shell 1-1, and the O-shaped ring 4 is arranged between the shell 1-1 and the shell cover 1-2, so that the air tightness of the self-adaptive valve can be ensured. The threaded connecting shaft 3-1 vertically penetrates through the shell cover 1-2 and is in threaded connection with the shell cover 1-2, the height can be adjusted through rotation, an adjusting hand wheel 3-2 is fixedly mounted at the upper end of the threaded connecting shaft 3-1, the adjusting hand wheel 3-2 can conveniently adjust the initial height of the main valve body 2, the set screw 3-3 horizontally penetrates through the side wall of the valve body shell 1 to abut against the shaft wall of the threaded connecting shaft 3-1, a pre-tightening force is generated, the threaded connecting shaft 3-1 is guaranteed not to move by itself due to external force interference, an O-shaped ring 4 is mounted between the valve core shell 1 and the shaft wall of the threaded connecting shaft 3-1, and the O-shaped ring 4 can guarantee the air tightness of the whole self-adaptive valve.

As shown in fig. 4, an oil gas recovery system is a mechanical oil gas recovery system, which comprises an oil gas recovery oil gun 5, a recovery device, a vacuum pump 9 and an oil tank 10, wherein the recovery device comprises the oil gas recovery oil gun 5, an oil gas filter 6 and the adaptive valve 8, the oil gas recovery oil gun 5, the oil gas filter 6, the adaptive valve 8, the vacuum pump 9 and the oil tank 10 are connected sequentially through an oil gas recovery pipeline 12, the vacuum pump 9 is connected with a motor 11, in the embodiment, the recovery device has two groups, and oil gas recovery work can be performed simultaneously in two oil filling processes.

Example 2

In addition to the same features as above, as shown in fig. 5, the oil gas recovery system may also be an electronic oil gas recovery system, the recovery device further includes a gas flow meter 7, the gas flow meter 7 is installed between the oil gas filter 6 and the adaptive valve 8, and the gas flow meter 7 may monitor the oil gas flow.

Example 3

In addition to the same features as above, as shown in fig. 6, the oil gas recovery system may also be a centralized oil gas recovery system, which includes four recovery devices, the four recovery devices are all connected to the oil tank 10 through a centralized vacuum pump 13, and the centralized vacuum pump 13 can process oil gas from the four recovery devices at the same time, thereby greatly improving the working efficiency of the oil gas recovery system and reducing the cost.

When the self-adaptive valve is used, the adjusting hand wheel is firstly rotated to adjust the height of the main valve body until the required airflow overflowing area is met, then the self-adaptive valve is assembled into an oil-gas recovery system, if the airflow generates pulsation in the operation process of the oil-gas recovery system, namely the gas pressure changes, the lower valve core sleeve is stressed to drive the valve core spring to change the length, and the overflowing area between the lower valve core sleeve and the adjusting hole is adjusted, so that the effect of adjusting the gas pressure of the gas inlet can be achieved, and the airflow pulsation can not influence the operation of the oil-gas recovery system.

The oil gas recovery oil gun, the oil gas filter, the gas flow meter, the self-adaptive valve, the vacuum pump and the oil tank are communicated through an oil gas recovery pipeline, and a plurality of groups of oil gas recovery oil guns, the oil gas filter, the gas flow meter and the self-adaptive valve can be connected with the centralized vacuum pump and the oil tank, so that efficient oil gas recovery work can be achieved.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a self-adaptation valve, includes the valve body shell and the main valve body, and air inlet and gas outlet have been seted up to the valve body shell, and the main valve body is installed at the valve body shell, its characterized in that: the valve body shell is internally provided with a guide groove and an air passage, the main valve body comprises a valve core, an upper valve core sleeve, a lower valve core sleeve, a spring end cover and a spring, the inner wall of the upper valve core sleeve is connected with the guide groove in a sealing mode, the spring end cover is installed on the upper valve core sleeve, the valve core is installed in the upper valve core sleeve, one end of the valve core penetrates through the spring end cover and is connected with the lower valve core sleeve, the lower valve core sleeve is inserted into the air passage, the air inlet and the air outlet are communicated through the air passage, the spring is sleeved on the valve core, one end of the spring is abutted to the outer extending portion of the valve core, and the other end of the spring is abutted to the spring end cover.

2. An adaptive valve according to claim 1, wherein: the outer wall of the upper valve core sleeve is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.

3. An adaptive valve according to claim 1, wherein: the valve core is characterized by further comprising an adjusting device which comprises a threaded connecting shaft and an adjusting hand wheel, wherein one end of the threaded connecting shaft is installed on the upper valve core sleeve, the other end of the threaded connecting shaft penetrates out of the upper end of the valve body shell, and the adjusting hand wheel is fixed at the other end of the threaded connecting shaft.

4. An adaptive valve according to claim 3, wherein: the adjusting device also comprises a set screw which penetrates through the side wall of the valve body shell to abut against the threaded connecting shaft.

5. An adaptive valve according to claim 3, wherein: an O-shaped ring is arranged between the valve core shell and the threaded connecting shaft.

6. An adaptive valve according to claim 1, wherein: the air flue is provided with an adjusting hole, the lower valve core sleeve is in a round table shape, and one end with a small diameter is inserted into the adjusting hole.

7. An adaptive valve according to claim 1, wherein: the air inlet is provided with a sealing gasket.

8. An adaptive valve according to claim 1, wherein: the case of the valve core comprises a case body and a case cover, the upper end of the case body is opened, the case cover is installed on the case body, and an O-shaped ring is installed between the case body and the case cover.

9. An oil gas recovery system which characterized in that: the oil gas recovery device comprises a recovery device, a vacuum pump and an oil tank, wherein the recovery device, the vacuum pump and the oil tank are sequentially connected, the vacuum pump is connected with a motor, the recovery device comprises an oil gas recovery oil filling gun and the self-adaptive valve according to any one of claims 1-8, the oil gas recovery oil filling gun is connected with the self-adaptive valve, and the self-adaptive valve is connected with the vacuum pump.

10. An oil and gas recovery system according to claim 9, characterized in that: the number of the recovery devices is the same as that of the vacuum pumps, and each group of recovery devices are connected with the oil tank through corresponding vacuum pumps.

11. An oil and gas recovery system according to claim 9, characterized in that: the vacuum pump is a centralized vacuum pump, and all recovery devices are connected with the centralized vacuum pump.

12. An oil and gas recovery system according to claim 9, characterized in that: the recovery device also comprises a gas flow meter which is arranged between the oil gas recovery oil gun and the self-adaptive valve.

13. An oil and gas recovery system according to claim 12, characterized in that: the recovery device also comprises an oil gas filter, and the oil gas filter is arranged between the oil gas recovery oil gun and the gas flowmeter.