Multifunctional c4f7n/co2 mixed gas preparation system and preparation method

Patent metadata

Field	Value
Publication number	US-2021237005-A1
Application number	US-202017059457-A
Country	US
Kind code	A1
Filing date	Jul 30, 2020
Priority date	Aug 7, 2019
Publication date	Aug 5, 2021
Grant date	—

Abstract

A multifunctional C4F7N/CO2 mixed gas preparation system is disclosed. The C4F7N heat exchanger is used to heat and vaporize C4F7N input through the C4F7N input port; the CO2 heat exchanger is used to heat and vaporize CO2 input through the CO2 input port; the C4F7N/CO2 mixing pipeline structure is used to mix the heated C4F7N and heated CO2, and the C4F7N/CO2 mixed gas output pipeline structure is used to output the C4F7N/CO2 mixed gas. The C4F7N/CO2 mixing pipeline structure comprises a C4F7N/CO2 dynamic gas preparation pipeline structure and a C4F7N/CO2 partial pressure mixing pipeline structure; the C4F7N/CO2 partial pressure mixing pipeline structure includes partial pressure mixing tanks for mixing the CO2 and the heated C4F7N of certain pressures; and a plurality of partial pressure mixing tanks are arranged in parallel. A multifunctional C4F7N/CO2 mixed gas preparation method is also disclosed.

First claim

1 . A multifunctional C 4 F 7 N/CO 2 mixed gas preparation system, comprising a C 4 F 7 N input port, a CO 2 input port, a C 4 F 7 N heat exchanger, a CO 2 heat exchanger, a C 4 F 7 N/CO 2 mixing pipeline structure, and a C 4 F 7 N/CO 2 mixed gas output pipeline structure;
the C 4 F 7 N heat exchanger is used to heat and vaporize C 4 F 7 N input through the C 4 F 7 N input port; the CO 2 heat exchanger is used to heat and vaporize CO 2 input through the CO 2 input port; the C 4 F 7 N/CO 2 mixing pipeline structure is used to mix heated C 4 F 7 N and heated CO 2 , and the C 4 F 7 N/CO 2 mixed gas output pipeline structure is used to output C 4 F 7 N/CO 2 mixed gas; the C 4 F 7 N/CO 2 mixing pipeline structure comprises a C 4 F 7 N/CO 2 dynamic gas preparation pipeline structure and a C 4 F 7 N/CO 2 partial pressure mixing pipeline structure; and the C 4 F 7 N/CO 2 dynamic gas preparation pipeline structure and the C 4 F 7 N/CO 2 partial pressure mixing pipeline structure are arranged in parallel; wherein the C 4 F 7 N/CO 2 dynamic gas preparation pipeline structure is used to quantitatively mix the heated CO 2 and the heated C 4 F 7 N; and the C 4 F 7 N/CO 2 partial pressure mixing pipeline structure is used to mix the heated CO 2 and the heated C 4 F 7 N at certain pressures.

2 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 1 , wherein the C 4 F 7 N/CO 2 dynamic gas preparation pipeline structure comprises a first solenoid valve, a second solenoid valve, a first thermal mass flow meter, a second thermal mass flow meter, a buffer mixing tank, a first pipe, and a second pipe;
the buffer mixing tank is provided with a first gas inlet, a second gas inlet, and a first mixed gas outlet; and a gas outlet of the CO 2 heat exchanger is communicated with the first gas inlet through the first pipe, and the first solenoid valve and the first thermal mass flow meter are both arranged on the first pipe; a gas outlet of the C 4 F 7 N heat exchanger is communicated with the second gas inlet through the second pipe, and the second solenoid valve and the second thermal mass flow meter are both arranged on the second pipe; and the first mixed gas outlet is communicated with an inlet end of the C 4 F 7 N/CO 2 mixed gas output pipeline structure.

3 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 1 , wherein the C 4 F 7 N/CO 2 partial pressure mixing pipeline structure comprises a partial pressure mixing tank, a third pipe, a fourth pipe, a fifth pipe, a third solenoid valve, a fourth solenoid valve, and a first proportional valve;
a plurality of the partial pressure mixing tanks are arranged in parallel; a gas inlet of the third pipe is communicated with the CO 2 input port, a gas inlet of the fourth pipe is communicated with the C 4 F 7 N input port, and the gas outlet of the third pipe and the gas outlet of the fourth pipe are both communicated with a gas inlet of the fifth pipe; a gas outlet of the fifth pipe is communicated with gas inlets of the partial pressure mixing tanks; the third solenoid valve is arranged on the third pipe, the fourth solenoid valve is arranged on the fourth pipe, and the first proportional valve is arranged on the fifth pipe.

4 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 3 , wherein the partial pressure mixing tank is further provided with a circulating mixing pipeline structure; the circulating mixing pipeline structure comprises a fifth solenoid valve, a first air pump, a first one-way valve, a sixth solenoid valve, and a circulating pipe; the two ends of the partial pressure mixing tank are respectively provided with a circulating gas inlet and a circulating gas outlet; the two ends of the circulating pipe are respectively communicated with the circulating gas inlet and the circulating gas outlet; and the fifth solenoid valve, the first air pump, the first one-way valve and the sixth solenoid valve are sequentially arranged on the circulating pipe along a gas flow direction from the circulating gas outlet to the circulating gas inlet.

5 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 4 , wherein two partial pressure mixing tanks are provided, and are respectively a first partial pressure mixing tank and a second partial pressure mixing tank;
the circulating pipe comprises a circulating gas inlet section, a circulating section, and a circulating gas outlet section that are communicated with each other end to end sequentially; a gas inlet of the circulating gas inlet section is communicated with a circulating gas outlet of the corresponding partial pressure mixing tank; the fifth solenoid valve is arranged on the corresponding circulating gas inlet section, and gas outlets of the two circulating gas inlet sections are both communicated with the gas inlet of one circulating section; and the first air pump and the first one-way valve are all provided on the circulating section; a gas outlet of the circulating section is communicated with gas inlets of the two circulating gas outlet sections; the sixth solenoid valve is provided on the corresponding circulating gas outlet section, and a gas outlet of the circulating gas outlet section is communicated with a circulating gas inlet of the corresponding partial pressure mixing tank.

6 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 3 , wherein the C 4 F 7 N/CO 2 mixing pipeline structure further comprises an output pipeline structure for extracting the C 4 F 7 N/CO 2 mixed gas in the partial pressure mixing tank;
the output pipeline structure comprises a seventh solenoid valve, a Fujiwara oil-free vacuum pump or a negative pressure pump, a second one-way valve, a third proportional valve, an eighth solenoid valve, a first output pipe, and a second output pipe; the first output pipe and the second output pipe are arranged in parallel, a gas inlet of the first output pipe and a gas inlet of the second output pipe are both communicated with a gas outlet of the partial pressure mixing tank, and a gas outlet of the first output pipe and a gas outlet of the second output pipe are both communicated with the C 4 F 7 N/CO 2 mixed gas output pipeline structure; the seventh solenoid valve, the Fujiwara oil-free vacuum pump or the negative pressure pump, and the second one-way valve are sequentially arranged on the first output pipe along a gas conveying direction; and the third proportional valve and the eighth solenoid valve are sequentially arranged on the second output pipe along a gas flow direction.

7 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 1 , further comprising a pressurizing pipeline structure for pressurizing the C 4 F 7 N/CO 2 mixed gas output from the C 4 F 7 N/CO 2 mixing pipeline structure.

8 . The multifunctional C 4 F 7 N/CO 2 mixed gas preparation system of claim 7 , wherein the pressurizing pipeline structure comprises a first buffer tank, a third air pump, a third one-way valve, a first pressurizing pipe, a second pressurizing pipe, a fourth proportional valve, and a third pressurizing pipe;
both ends of the first pressurizing pipe are respectively communicated with an outlet end of the C 4 F 7 N/CO 2 dynamic gas preparation pipeline structure and a first gas inlet of the first buffer tank; both ends of the second pressurizing pipe are respectively communicated with an outlet end of the C 4 F 7 N/CO 2 partial pressure mixing pipeline structure and a second gas inlet of the first buffer tank; both ends of the third pressurizing pipe are respectively communicated with a gas outlet of the first buffer tank and the inlet end of the C 4 F 7 N/CO 2 mixed gas output pipeline structure; the

Assignees

• State Grid Anhui Electric Power Res Institute
• State Grid Corp China

Inventors

• Liu Wei
• Wang Liufang
• Qi Jiong
• Zhao Yue
• Ma Fengxiang
• Liu Zien

Classifications

• H01B3/56 Primary

  gases · CPC title

• B01F21/00

  Dissolving (separating by dissolving B01D; dissolving to effect cooling F25D5/00) · CPC title

• B01F2101/23

  Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials · CPC title

• B01F23/12

  with vaporisation of a liquid (disinfection, sterilisation or deodorisation of air A61L9/00) · CPC title

• B01F23/00

  Mixing according to the phases to be mixed, e.g. dispersing or emulsifying · CPC title