CN218599458U

CN218599458U - Gas mixing and filling device

Info

Publication number: CN218599458U
Application number: CN202223204101.XU
Authority: CN
Inventors: 张波
Original assignee: Sichuan Laifeng Fluid Equipment Manufacturing Co ltd
Current assignee: Sichuan Laifeng Fluid Equipment Manufacturing Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-10
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a gas mixing filling device, including holding jar, the gas discharge mechanism who is used for impressing the booster mechanism of high-pressure steel bottle behind the gas mixture pressure boost and is used for discharging the booster mechanism preceding remaining gas mixture, the inlet end that holds jar communicates through the end of giving vent to anger of first pipeline with the gas mixing device, the inlet end intercommunication that the end of giving vent to anger of holding jar passes through second pipeline and booster mechanism, booster mechanism's the end of giving vent to anger has the steel bottle to connect through third pipe connection. The utility model discloses a setting up the gas discharge mechanism who communicates with gas mixing device and booster mechanism respectively, can be before the gas mixture of the different concentrations of next filling with remaining gas mixture discharge in the gas mixing device and first pipeline, second pipeline, the holding tank, so need not the gas through next filling and come the remaining gas of last filling, gas replacement's efficiency when having improved the gas mixture filling of different concentrations.

Description

Gas mixing and filling device

Technical Field

The utility model relates to a gaseous filling technical field, in particular to gas mixing filling device.

Background

Laboratory or industrial processes use large quantities of mixtures of varying concentrations, which are typically contained in high pressure steel cylinders. The filling of the mixed gas is generally as follows: the air outlet end of the air distribution device is communicated through an air pipe and is filled into a high-pressure steel cylinder in a high-pressure mode. Such a filling method has the following disadvantages: if filling with different concentrations is carried out, a certain amount of mixed gas II (mixed gas II refers to the mixed gas to be filled next time) is introduced before the mixed gas is pressed into the steel cylinder, the mixed gas I (mixed gas I refers to the mixed gas to be filled last time) filled last time is discharged, and then filling can be carried out, otherwise, the gas concentration in the high-pressure steel cylinder is influenced; the second mixed gas introduced before the next filling cannot be accurately controlled, so that the problem of excess or deficiency often occurs, the concentration of the second mixed gas is influenced if the second mixed gas is insufficient, and the second mixed gas is wasted if the second mixed gas is excessive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a gas mixture filling device, through setting up the gas discharge mechanism who communicates with gas mixing device and booster mechanism respectively, can be before the gas mixture of the different concentrations of next filling with in the gas mixing device and first pipeline, second pipeline, hold jar interior remaining gas mixture and discharge, so need not to discharge the remaining gas of last filling through the gas of next filling, the efficiency of gas replacement when improving the gas mixture filling of different concentrations.

The purpose of the utility model is realized through the following technical scheme:

a gas mixing and filling device comprises a containing tank, a pressurization mechanism and a gas discharge mechanism, wherein the pressurization mechanism is used for pressurizing a mixed gas and then pressing the mixed gas into a high-pressure steel cylinder, the gas discharge mechanism is used for discharging residual mixed gas in front of the pressurization mechanism, the gas inlet end of the containing tank is communicated with the gas outlet end of the gas mixing device through a first pipeline, the gas outlet end of the containing tank is communicated with the gas inlet end of the pressurization mechanism through a second pipeline, and the gas outlet end of the pressurization mechanism is connected with a steel cylinder connector through a third pipeline;

the gas discharge mechanism is communicated with the third pipeline through a fourth pipeline;

the second pipeline is provided with a first valve, the fourth pipeline is provided with a second valve, and the first valve and the second valve are respectively positioned at the rear ends of the second pipeline and the fourth pipeline joint.

Further, the fourth pipeline is communicated with the second pipeline through a three-way joint.

Further, the first valve and the second valve are normally closed switch valves.

Furthermore, a check valve is arranged on the third pipeline.

Further, the pressurization mechanism is a booster pump, and the gas discharge mechanism is a vacuum pump.

Further, the first pipe and the third pipe are metal hoses.

The beneficial effects of the utility model are that:

the utility model discloses a set up the gas discharge mechanism who communicates with gas mixing device and booster mechanism respectively, can be before the gas mixture of the different concentrations of next filling with remaining gas mixture discharge in the gas mixing device and first pipeline, second pipeline, the holding tank, so need not the gas through next filling and discharges the remaining gas of last filling, consequently not have the gas not enough or the excessive condition of next filling, gas replacement's efficiency when having improved the filling of different concentrations gas mixture.

Drawings

Fig. 1 is a schematic view of a gas mixing and filling device according to an embodiment of the present invention when the gas mixing and filling device is communicated with a gas mixing device;

fig. 2 is an overall schematic view of a gas mixing and filling apparatus according to an embodiment of the present invention;

FIG. 3 is a gas path diagram of the gas mixing device;

in the figure, 1, a holding tank; 2. a pressurization mechanism; 3. a gas discharge mechanism; 4. a high-pressure steel cylinder; 5. a first conduit; 6. a second conduit; 7. a third pipeline; 8. a fourth pipe; 9. a first valve; 10. a second valve; 11. a one-way valve; 12. a first gas source; 13. a first back pressure valve; 14. a first filter; 15. a first pressure sensor; 16. a first normally closed on-off valve; 17. a first gas mass flow controller; 18. a first check valve; 19 a second gas source; 20. a second back pressure valve; 21. a second filter; 22. a second pressure sensor; 23. a second normally closed switch valve; 24. a second gas mass flow controller; 25. a second one-way valve; 26. a gas mixing device; 27. a mixer.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

example (b):

as shown in fig. 1 to fig. 3, a gas mixing and filling apparatus includes a holding tank 1, a pressurization mechanism 2 for pressurizing a mixture and then pressing the mixture into a high-pressure steel cylinder 4, and a gas discharge mechanism 3 for discharging the mixture left before the pressurization mechanism 2, wherein an air inlet end of the holding tank 1 is communicated with an air outlet end of a gas mixing device 26 through a first pipeline 5, the air outlet end of the holding tank 1 is communicated with an air inlet end of the pressurization mechanism 2 through a second pipeline 6, and the air outlet end of the pressurization mechanism 2 is connected with a steel cylinder connector through a third pipeline 7; during filling, the high-pressure steel cylinder 4 is communicated with the third pipeline 7 through a steel cylinder joint;

the gas discharge mechanism 3 is communicated with a third pipeline 7 through a fourth pipeline 8;

be equipped with first valve 9 on the second pipeline 6, be equipped with second valve 10 on the fourth pipeline 8, first valve 9 and second valve 10 are located the rear end that second pipeline 6 and fourth pipeline 8 connect respectively.

The fourth pipeline 8 is communicated with the second pipeline 6 through a three-way joint.

The first valve 9 and the second valve 10 are normally closed on-off valves.

And a check valve 11 is arranged on the third pipeline 7. The check valve 11 is directed to flow from the pressurizing mechanism 2 toward the high-pressure cylinder 4.

The booster mechanism 2 is a booster pump, and the gas exhaust mechanism 3 is a vacuum pump. Wherein, the vacuum pump is provided with an evacuation port, the booster pump is provided with driving gas, the two mechanisms are the prior art, and the details are not described herein.

The first pipe 5 and the third pipe 7 are metal hoses.

As shown in fig. 1 and 3, the gas mixing device 26 includes an upper gas path and a lower gas path connected to the mixer 27, where the upper gas path includes: the device comprises a first gas source 12, a first back pressure valve 13, a first filter 14, a first pressure sensor 15, a first normally closed switch valve 16, a first gas mass flow controller 17 and a first one-way valve 18 which are communicated in sequence. The first gas source 12 in this embodiment is N2.

The lower gas circuit includes: and the second gas source 19, the second backpressure valve 20, the second filter 21, the second pressure sensor 22, the second normally closed switch valve 23, the second gas mass flow controller 24 and the second check valve 25 are communicated in sequence. In this embodiment, the second gas source 19 is a standard gas (which may be, but is not limited to, CO2, NH3, H2S, CH 4).

The working principle is as follows: the upper and lower gas paths enter the mixer 27 to form a mixed gas with a preset concentration, and the mixed gas enters the accommodating tank 1 through the first pipeline 5. When the holding tank 1 is full or reaches a certain volume ratio (such as 80%), the pressurizing mechanism 2 is opened, and the mixed gas is pressurized by the pressurizing mechanism 2 and then is pressed into the high-pressure steel cylinder 4.

For convenience of description, the mixed gas filled at the previous time is named as mixed gas one, and the mixed gas required to be filled at the next time is named as mixed gas two.

When the concentration of the mixture to be filled changes, i.e. the last filling is finished, the second valve 10 is opened and the gas discharge mechanism 3 is started, and the gas discharge mechanism 3 sucks and discharges the mixture remaining in the gas mixing device 26 and in the first pipeline 5, the second pipeline 6 and the accommodating tank 1.

The utility model discloses a setting up the gas discharge mechanism who communicates with gas mixing device and booster mechanism respectively, can be before the gas mixture of the different concentrations of next filling with remaining gas mixture discharge in the gas mixing device and first pipeline, second pipeline, the holding tank, so need not the gas through next filling and come the remaining gas of last filling, gas replacement's efficiency when having improved the gas mixture filling of different concentrations.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein and that the invention is not to be considered as limited to the disclosed embodiments, but is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a gas mixing filling device which characterized in that: the gas-liquid separation device comprises a containing tank, a pressurization mechanism and a gas discharge mechanism, wherein the pressurization mechanism is used for pressurizing mixed gas and then pressing the pressurized mixed gas into a high-pressure steel cylinder, the gas discharge mechanism is used for discharging residual mixed gas in front of the pressurization mechanism, the gas inlet end of the containing tank is communicated with the gas outlet end of a gas mixing device through a first pipeline, the gas outlet end of the containing tank is communicated with the gas inlet end of the pressurization mechanism through a second pipeline, and the gas outlet end of the pressurization mechanism is connected with a steel cylinder connector through a third pipeline;

2. The gas mixing and filling apparatus according to claim 1, wherein: and the fourth pipeline is communicated with the second pipeline through a three-way joint.

3. The gas mixing and filling apparatus according to claim 1, wherein: the first valve and the second valve are normally closed switch valves.

4. The gas mixing and filling apparatus according to claim 1, wherein: and a one-way valve is arranged on the third pipeline.

5. The gas mixing and filling apparatus according to claim 1, wherein: the supercharging mechanism is a supercharging pump, and the gas exhaust mechanism is a vacuum pump.

6. The gas mixing and filling apparatus according to claim 1, wherein: the first pipeline and the third pipeline are metal hoses.