CN218993075U

CN218993075U - Hydraulic air-entraining device

Info

Publication number: CN218993075U
Application number: CN202220845729.9U
Authority: CN
Inventors: 徐聪; 王晓琳; 杨开乔; 李忆晨; 张红敏
Original assignee: Jinhong Gas Co ltd
Current assignee: Jinhong Gas Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2023-05-09
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a hydraulic air-entraining device, which utilizes liquid to store gas by extrusion, wherein the liquid and the gas are mutually insoluble, and the device comprises: a first gas storage device for providing a gas; a liquid storage device for providing liquid, the liquid storage device having a first liquid pump for pumping in and a second liquid pump for pumping out; the gas-liquid storage device is respectively connected with the first gas storage device and the liquid storage device and is used for temporarily storing the gas and the liquid, and the volume ratio of the gas to the liquid changes along with the pumping-in and pumping-out of the liquid; the buffer device is connected with the gas-liquid storage device and is used for temporarily storing liquid discharged together with the gas; compression means for discharging the gas under pressure; and a second gas storage device for receiving the gas discharged from the compression device. The device has improved the rate of recovery of gas greatly, reduces the waste of gas.

Description

Hydraulic air-entraining device

Technical Field

The utility model relates to the field of pressurized gas storage, in particular to a hydraulic gas filling device.

Background

At present, the construction of the hydrogen adding station in China has a large development space. By the end of 3 months in 2021, the hydrogen station of China is built into 131 seats altogether, wherein 108 seats are operated. In addition, 65 seats are being constructed, and 122 seats are being planned. Hydrogen fuel cell automobiles have not been popular, although there are many hydrogen stations in operation. The current holding capacity of the domestic hydrogen fuel cell automobile is only 1 ten thousand, and the development of hydrogen energy sources has long way to go.

For the hydrogenation station, the transportation of the gas is carried out by a tube-bundle type fish-mine car. In this process, the torpedo car is connected to the hydrogen station storage tank by a multi-stage gas compression device. Whereas the suction pressure of the conventional gas compression device is 5-20 MPa, and the discharge pressure is about 45MPa. When the pressure is low to the lower limit of the inlet of the compression device of the hydrogenation station in the hydrogenation process by using the long pipe trailer, the working pressure requirement of the compression device cannot be met, and the gas in the fishing and thunder truck cannot be fully utilized, so that certain waste is caused.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a hydraulic air-entrapping device which can effectively relieve the condition of gas waste caused by insufficient pressure.

To achieve the above object, the present utility model provides a hydraulic air-entrapping device comprising: a first gas storage device for providing a gas; a liquid storage device for providing liquid, the liquid storage device having a first liquid pump for pumping in and a second liquid pump for pumping out; the gas-liquid storage device is respectively connected with the first gas storage device and the liquid storage device and is used for temporarily storing the gas and the liquid, and the volume ratio of the gas to the liquid changes along with the pumping-in and pumping-out of the liquid; the buffer device is connected with the gas-liquid storage device and is used for temporarily storing liquid discharged together with the gas; compression means connected to the buffer means for pressurizing and discharging the gas; and the second gas storage device is connected with the compression device and is used for receiving the gas discharged by the compression device.

In one or more embodiments, the liquid storage device is a liquid tank, the liquid tank and the gas-liquid storage device are connected with a first pipeline, the first liquid pump is arranged on the first pipeline, and a first valve is further arranged on the first pipeline.

In one or more embodiments, the liquid tank and the gas-liquid storage device are connected with a second pipeline, the second liquid pump is arranged on the second pipeline, and a second valve is further arranged on the second pipeline.

In one or more embodiments, the first gas storage device is provided with a first barometer, the first gas storage device and the gas-liquid storage device are connected with a third pipeline, and the third pipeline is provided with a second barometer and a fourth valve.

In one or more embodiments, a third barometer is provided on top of the gas-liquid storage device.

In one or more embodiments, a fourth pipeline is connected to the bottom of the buffer device and the upper part of the gas-liquid storage device, a fifth valve is arranged on the fourth pipeline, and a drain valve is further arranged at the bottom of the buffer device.

In one or more embodiments, a fifth pipeline is connected to the top of the compression device and the buffer device, and a sixth valve is arranged on the fifth pipeline.

In one or more embodiments, a sixth pipeline is connected to the top of the second gas storage device and the compression device, a seventh valve is arranged on the sixth pipeline, and a fourth pressure gauge is further arranged on the gas storage tank.

In one or more embodiments, a third valve is further disposed below the first gas storage device, and the first gas storage device is further provided with a floor scale.

In one or more embodiments, the liquid tank is further equipped with a liquid scale.

Compared with the prior art, the hydraulic type air-entrapping device has the advantages that the device utilizes the matching of the liquid storage device and the gas-liquid storage device to squeeze gas into the hydrogen storage tank, so that tail hydrogen of the tank body of the fish tank truck can be fully recycled, and waste is reduced.

Drawings

Fig. 1 is a schematic flow diagram of a hydraulic air entrainment device according to an embodiment of the utility model.

The main reference numerals illustrate:

1. a liquid tank; 2. a liquid scale; 3. a first pipe; 4. a first liquid pump; 5. a first valve; 6. a second liquid pump; 7. a second valve; 8. a second pipe; 9. a gas-liquid storage tank; 10. a fish tank car; 11. a third valve; 12. a first barometer; 13. a third conduit; 14. a floor scale; 15. a second barometer; 16. a fourth valve; 17. a third barometer; 18. a fourth conduit; 19. a fifth valve; 20. a buffer device; 21. a fifth pipe; 22. a blow-down valve; 23. a sixth valve; 24. a compression device; 25. a sixth conduit; 26. a seventh valve; 27. a fourth barometer; 28. and a gas storage tank.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

As shown in fig. 1, the hydraulic air-entrapping device according to an embodiment of the present utility model includes a first air storage device, a liquid storage device, a gas-liquid storage device, a compression device, and a second air storage device. The first gas storage device is used for guiding gas into the gas-liquid storage device, then liquid is guided into the gas-liquid storage device through the liquid storage device, the gas is extruded and discharged through the liquid, and then compressed and pressurized through the compression device and discharged to the second gas storage device.

In one embodiment, as shown in FIG. 1, the first gas storage device is a fish tank truck 10 for providing gas. The first air storage device is provided with a first air pressure gauge 12 for monitoring the air pressure condition of the first air storage device in real time. The first gas storage means is also provided with a floor scale 14 for reacting by weight the amount of gas remaining in the first gas storage means.

The liquid storage device is a liquid tank 1, liquid is stored in the liquid tank 1, and the liquid is not compatible with the gas. The liquid tank 1 is provided with a first pipe 3, and the first pipe 3 is provided with a first liquid pump 4 and a first valve 5 for controlling the pumping of liquid into the liquid tank 1. The liquid tank 1 is also provided with a second pipeline 8, and the second pipeline 8 is provided with a second liquid pump 6 and a second valve 7 for controlling the liquid in the liquid tank 1 to be pumped out. The liquid tank 1 is also provided with a liquid scale 2 to react in real time the amount of liquid in the liquid tank 1 for replenishment.

The gas-liquid storage device is a gas-liquid storage tank 9 (which can store gas and liquid), and the bottom of the gas-liquid storage tank 9 is respectively connected with the first pipeline 3 and the second pipeline 8. The gas-liquid storage tank 9 is used for receiving the liquid pumped by the second pipe 8 and introducing the liquid into the first pipe 3. The gas-liquid storage tank 9 is also provided with a third barometer 17 for reacting to the air pressure in the gas-liquid storage tank 9. The gas-liquid storage tank 9 is also provided with a liquid level meter for reflecting the liquid level condition in the gas-liquid storage tank 9 in real time so as to prevent the liquid from flowing into the fourth pipeline 18.

A third pipeline 13 (namely a traditional gas pipe) is connected between the first gas storage device and the gas-liquid storage tank 9, and a second barometer 15 and a fourth valve 16 are arranged on the third pipeline 13. The second barometer 15 is used for reacting the air pressure condition in the third pipe 13, and the fourth valve 16 is opened to control the discharge of air in the first air storage device.

A fourth pipeline 18 is connected above the gas-liquid storage tank 9, and a fifth valve 19 is arranged on the fourth pipeline 18.

In one embodiment, in order to prevent the liquid in the fourth pipe 18 from flowing directly into the compressor 24 and the second hydrogen storage device, causing damage to the compressor 24 and contamination of the gas in the second hydrogen storage device, a buffer device is further provided at the other end of the fourth pipe 18. In one example the cushioning device is a cushioning device 20.

The bottom of the buffer device 20 is also provided with a drain valve 22 for draining the overflow liquid. The buffer device 20 is provided with a liquid level meter for monitoring the liquid condition in the buffer device 20 in real time and correspondingly processing the liquid condition.

A fifth pipeline 21 is arranged above the buffer device 20, a sixth valve 23 is arranged on the fifth pipeline 21, a compression device (a compressor 24) is arranged at the other end of the fifth pipeline 21, a sixth pipeline 25 is connected between the compression device and a hydrogen storage device (a hydrogen storage tank), and a seventh valve 26 is arranged on the sixth pipeline 25. The gas flowing through the buffer device 20 is secondarily pressurized by the compression device 24, and then flows into and is stored in the hydrogen storage tank. The hydrogen storage tank is also provided with a fourth pressure gauge for real-time reaction of the pressure condition in the hydrogen storage tank.

The hydraulic air-entraining device of the utility model has the following working processes:

the fourth valve 16 is first opened and the remaining valves are closed. The gas in the first gas storage device flows into the gas-liquid storage tank 9, and after the gas pressure is balanced, the fourth valve 16 is closed. The second valve 7, the fifth valve 19, the sixth valve 23 and the seventh valve 26 are then opened again, while the compression means 24 are also opened. The second liquid pump 6 pumps the liquid into the gas-liquid storage tank 9, and the gas in the gas-liquid storage tank 9 is extruded by the continuous inflow of the liquid, flows into the gas storage tank 28 through the buffer device 20 and the compression device 24, and is stored. While monitoring the level of the liquid in the gas-liquid storage tank 9 to control the pumping of the liquid. Then, the second liquid pump 6 and the second valve 7 are closed again, and the fifth valve 19, the sixth valve 23, the seventh valve 26 and the compression device 24 are also closed. The first liquid pump 4 and the first valve 5 are opened to pump the liquid in the gas-liquid storage tank 9 back into the liquid tank 1. At this time, the gas space in the gas-liquid storage tank 9 becomes large, and the above-described operation is repeated. I.e. the gas in the first gas storage device is led into the gas-liquid storage tank 9, then the liquid is pumped into the gas-liquid storage tank 9 by the second liquid pump 6, and the gas is extruded into the gas storage tank 28. Thus, the air-filling work can be realized.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. A hydraulic air entrainment device, comprising:

a first gas storage device for providing a gas;

a liquid storage device for providing a liquid, the liquid being immiscible with the gas, the liquid storage device having a first liquid pump for pumping in the liquid and a second liquid pump for pumping out the liquid;

the gas-liquid storage device is respectively connected with the first gas storage device and the liquid storage device and is used for temporarily storing the gas and the liquid, and the volume ratio of the gas to the liquid changes along with the pumping-in and pumping-out of the liquid;

the buffer device is connected with the gas-liquid storage device and is used for temporarily storing liquid discharged together with the gas;

compression means connected to the buffer means for pressurizing and discharging the gas; and

and the second gas storage device is connected with the compression device and is used for receiving the gas discharged by the compression device.

2. The hydraulic gas filling device according to claim 1, wherein the liquid storage device is a liquid tank, the liquid tank and the gas-liquid storage device are connected with a first pipeline, the first liquid pump is arranged on the first pipeline, and a first valve is further arranged on the first pipeline.

3. The hydraulic gas filling device according to claim 2, wherein the liquid tank and the gas-liquid storage device are connected with a second pipeline, the second liquid pump is arranged on the second pipeline, and a second valve is further arranged on the second pipeline.

4. The hydraulic air-entrapping device of claim 2, wherein the first air storage device is provided with a first air pressure gauge, the first air storage device and the air-liquid storage device are connected with a third pipeline, and the third pipeline is provided with a second air pressure gauge and a fourth valve.

5. The hydraulic gas filling apparatus according to claim 1, wherein a third barometer is provided on top of the gas-liquid storage device.

6. The hydraulic gas filling device according to claim 1, wherein a fourth pipeline is connected to the bottom of the buffer device and the upper part of the gas-liquid storage device, a fifth valve is arranged on the fourth pipeline, and a drain valve is further arranged at the bottom of the buffer device.

7. The hydraulic air entrainment device of claim 1 wherein a fifth conduit is connected to the top of the compression device and the buffer device, the fifth conduit having a sixth valve disposed thereon.

8. The hydraulic air-entrapping device of claim 4, wherein a third valve is further disposed below the first air-entrapping device, and wherein the first air-entrapping device is further provided with a floor scale.

9. A hydraulic air entrainment device as defined in claim 2 wherein said liquid tank is further provided with a liquid scale.