CN111579261A - Mars surface gas composition simulation device and method - Google Patents

Mars surface gas composition simulation device and method Download PDF

Info

Publication number
CN111579261A
CN111579261A CN202010323062.1A CN202010323062A CN111579261A CN 111579261 A CN111579261 A CN 111579261A CN 202010323062 A CN202010323062 A CN 202010323062A CN 111579261 A CN111579261 A CN 111579261A
Authority
CN
China
Prior art keywords
vacuum
gas
vacuum chamber
carbon dioxide
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010323062.1A
Other languages
Chinese (zh)
Other versions
CN111579261B (en
Inventor
王亚军
赛建刚
赵燕
张海民
韩磊
高斌
于攀龙
孟宁飞
高博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XiAn Institute of Optics and Precision Mechanics of CAS
Original Assignee
XiAn Institute of Optics and Precision Mechanics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XiAn Institute of Optics and Precision Mechanics of CAS filed Critical XiAn Institute of Optics and Precision Mechanics of CAS
Priority to CN202010323062.1A priority Critical patent/CN111579261B/en
Publication of CN111579261A publication Critical patent/CN111579261A/en
Application granted granted Critical
Publication of CN111579261B publication Critical patent/CN111579261B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/042—Turbomolecular vacuum pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/02—Mixing fluids
    • F17C2265/025—Mixing fluids different fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0186—Applications for fluid transport or storage in the air or in space
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/45—Hydrogen technologies in production processes

Abstract

The invention provides a device and a method for simulating gas components on a Mars surface, aiming at solving the technical problems that the existing ground simulation scheme has larger simulation error and can not truly and accurately simulate the pressure environment on the Mars surface. The invention considers the gas components on the surface of the Mars to the maximum extent, can approximate to the actual Mars atmospheric simulation state, and provides technical support for the Mars detector to carry out real and accurate environment simulation test on the ground.

Description

Mars surface gas composition simulation device and method
Technical Field
The invention belongs to the technical field of spacecraft test tests, and particularly relates to a mars surface gas composition simulation device and method.
Background
The goal of human beings to detect mars, in addition to exploring the mysteries of the universe, is that mars are neighbors of our earth, which are characterized in many ways by being very similar to the earth. It is believed that the present of mars is the earth's future. Therefore, the detection and research of the mars are very important for understanding the environment of the earth where the mars live, particularly for understanding the long-term evolution process of the earth.
China formally proposes a mars detection plan in 2016 and starts to implement the mars detection plan, and test work for simulating the surface atmospheric environment of the mars in the mars detection process is particularly important, and the work largely determines whether the mars detection is successful or not.
The surface of the spark is different from the atmospheric environment on the earth surface, and the main components of the spark are 95% of carbon dioxide, 3% of nitrogen, 1% of argon, 1% of hydrogen and the like. At present, when a ground simulation Mars detector bears the pressure environment of the surface of the Mars, pure nitrogen or pure carbon dioxide gas is filled into a simulator for simulation, and the defect of the simulation is that the gas components are single, the simulation is only roughly performed in a substitution mode, larger simulation errors exist, and the pressure environment of the surface of the Mars cannot be truly and accurately simulated.
Disclosure of Invention
The invention provides a device and a method for simulating gas components on a Mars surface, aiming at solving the technical problems that the existing ground simulation scheme has larger simulation error and can not truly and accurately simulate the pressure environment on the Mars surface.
The technical scheme of the invention is as follows:
a gas composition simulation device on the surface of a spark is characterized in that: the system comprises a gas supply system, a flow control system, a vacuum system, a gas depressurization system, a gas ionization system, a mass spectrum system, an ion collection system and an upper computer;
the gas supply system comprises a carbon dioxide gas cylinder, a nitrogen gas cylinder, an argon gas cylinder and a hydrogen gas cylinder which are arranged in parallel;
the flow control system comprises a first vacuum valve, and a carbon dioxide pipeline, a nitrogen pipeline, an argon pipeline and a hydrogen pipeline which are arranged in parallel; one end of the carbon dioxide pipeline, one end of the nitrogen pipeline, one end of the argon pipeline and one end of the hydrogen pipeline are respectively communicated with the carbon dioxide gas cylinder, the nitrogen gas cylinder, the argon gas cylinder and the hydrogen cylinder, the other ends of the carbon dioxide pipeline, the nitrogen gas cylinder, the argon gas cylinder and the hydrogen cylinder are respectively connected with one end of a first vacuum valve, and the other end of the valve is connected with the input end of a vacuum chamber in a; a carbon dioxide mass flowmeter, a nitrogen mass flowmeter, an argon mass flowmeter and a hydrogen mass flowmeter are respectively arranged on the carbon dioxide pipeline, the nitrogen pipeline, the argon pipeline and the hydrogen pipeline;
the vacuum system comprises a vacuum chamber, a vacuum system main valve and a first pumping unit which are connected in sequence; the vacuum chamber is provided with a first vacuum gauge for measuring the vacuum degree in the vacuum chamber; the vacuum chamber is made of aluminum alloy or stainless steel material, the inner surface of the vacuum chamber is subjected to anodic oxidation treatment, and a spark detector is arranged in the vacuum chamber; the first air extraction unit is used for vacuumizing the vacuum chamber to reduce the pressure of gas in the vacuum chamber to meet the requirement of test pressure;
the gas depressurization system comprises a depressurization cavity, a main valve of the depressurization system and a second pumping unit which are connected in sequence; the input end of the decompression cavity is communicated with the output end of the vacuum cavity through a second vacuum valve; the pressure reduction cavity is provided with a second vacuum gauge for measuring the vacuum degree in the pressure reduction cavity; one output end of the decompression cavity is connected with the input end of the gas ionization system through a fourth vacuum valve; the second air extraction unit is used for vacuumizing the decompression cavity to reduce the pressure of the gas in the decompression cavity;
a gas ionization system for ionizing gas molecules entering therein to form ions;
the mass spectrum system is used for screening ions and then sending the screened ions into the ion collection system;
the ion collection system generates corresponding current signals according to the received ion current concentrations of various gases and sends the corresponding current signals to the upper computer;
the upper computer controls the opening degrees of the carbon dioxide mass flowmeter, the nitrogen mass flowmeter, the argon mass flowmeter and the hydrogen mass flowmeter according to the characteristic that the current signal sent by the ion collecting system and the ion current concentration are in a direct proportion relation and by referring to the set gas concentration, so that the gas component proportion in the vacuum chamber is ensured.
Furthermore, the first pumping unit comprises a first molecular pump, a molecular pump front-stage valve and a first dry pump which are sequentially connected, and the first molecular pump is connected with one of the output ends of the vacuum chamber through the vacuum system main valve.
Furthermore, the second pumping unit comprises a second molecular pump, a third vacuum valve and a second dry pump which are sequentially connected, and the second molecular pump is connected with one output end of the decompression cavity through a main valve of the decompression system.
The invention also provides a method for simulating active surface gas components by using the Mars surface gas component simulation device, which comprises the following steps:
1) the upper computer is used for setting the concentration proportion of carbon dioxide, nitrogen, argon and hydrogen to be 95%: 3%: 1%: 1 percent;
2) placing the test product in a vacuum chamber, and then closing the vacuum chamber;
3) opening the main valve of the vacuum system, and vacuumizing the vacuum chamber by using the first air pumping unit, wherein when the pressure in the vacuum chamber is reduced to 10-2When the pressure is Pa, the pressure is higher,opening a first vacuum valve, and then closing a main valve of a vacuum system;
4) opening a carbon dioxide mass flowmeter, a nitrogen mass flowmeter, an argon mass flowmeter and a hydrogen mass flowmeter, and filling carbon dioxide, nitrogen, argon and hydrogen into the vacuum chamber;
5) when the pressure in the vacuum chamber reaches the pressure of the surface of the spark, namely 1000Pa, the opening of a main valve of the vacuum system is adjusted, so that the pressure in the vacuum chamber reaches dynamic balance at 1000 Pa;
6) opening a second vacuum valve according to the opening degrees of 95%, 3%, 1% and 1% to enable the mixed gas of carbon dioxide, nitrogen, argon and hydrogen to enter a decompression cavity from a vacuum cavity;
7) when the pressure in the decompression cavity reaches 1000Pa, closing the second vacuum valve, opening a main valve of the decompression system, and vacuumizing the decompression cavity by using the second air pumping unit;
8) when the pressure in the decompression chamber is reduced to 10-2When the pressure is lower than Pa, opening a fourth vacuum valve to enable the mixed gas of carbon dioxide, nitrogen, argon and hydrogen to enter the gas ionization system from the pressure reduction cavity, and ionizing the mixed gas in the gas ionization system;
9) ions generated by gas ionization enter a mass spectrum system, and mass spectrum separation is carried out on various ions;
10) the ions separated by the mass spectrum enter an ion collection system for collection and analysis, the ion current concentrations of various gases are analyzed, corresponding current signals are generated according to the ion current concentrations of the various gases and are sent to an upper computer;
11) the host computer is according to the current signal that receives, according to current signal and ion current concentration direct ratio's relation, refers to each gas concentration proportion of preset, controls carbon dioxide mass flowmeter, nitrogen gas mass flowmeter, argon gas mass flowmeter, hydrogen mass flowmeter's aperture for the concentration proportion of carbon dioxide, nitrogen gas, argon gas, hydrogen in the vacuum chamber is 95: 3%: 1%: 1 percent;
12) and (5) executing the steps from step 5) to step 11) in a circulating manner every set time, and ensuring that the gas proportion in the vacuum chamber can truly simulate the gas composition on the surface of the spark in the test process.
Further, the step 3) is specifically as follows:
3.1) starting the first dry pump, the molecular pump front-stage valve and the vacuum system main valve in sequence to start to vacuumize the vacuum chamber;
3.3) when the pressure in the vacuum chamber is reduced to be less than 10Pa, starting the first molecular pump, and vacuumizing the vacuum chamber by using the first molecular pump;
3.3) when the pressure in the vacuum chamber drops to 10-2And when Pa, opening the first vacuum valve, and then closing the main valve of the vacuum system.
Further, the step 7) is specifically as follows: and closing the second vacuum valve, opening a main valve of the depressurization system and a third vacuum valve, starting the second dry pump, and starting the second molecular pump to vacuumize the depressurization chamber when the pressure in the depressurization chamber is reduced to be less than 10 Pa.
The invention has the advantages that:
1. the invention considers the gas components on the surface of the Mars to the maximum extent, can approximate to the actual Mars atmospheric simulation state, and provides technical support for the Mars detector to carry out real and accurate environment simulation test on the ground.
2. According to the invention, the first air pumping unit and the second air pumping unit both adopt a scheme that the molecular pump and the dry pump are connected in series, so that the material is saved and the control is easy.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of reference numerals:
1-a carbon dioxide cylinder; 2-nitrogen gas cylinder; 3-argon bottle; 4-hydrogen gas cylinder; 5-a carbon dioxide mass flow meter; 6-nitrogen mass flow meter; 7-argon mass flow meter; 8-a hydrogen mass flow meter; 9-a first vacuum valve; 10-a vacuum chamber; 11-main valve of vacuum system, 12-first molecular pump; 13-a molecular pump front-stage valve, 14-a first dry pump and 15-a second vacuum valve; 16-a reduced pressure chamber; 17-a depressurization system main valve; 18-a second molecular pump; 19-a third vacuum valve; 20-a second dry pump; 21-a fourth vacuum valve; 22-a gas ionization system; 23-a mass spectrometry system; 24-an ion collection system; 25-a first vacuum gauge; 26-second vacuum gauge.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the device for simulating gas components on a surface of a spark provided in this embodiment includes a gas supply system, a flow control system, a vacuum system, a gas pressure reduction system, a gas ionization system 22, a mass spectrometry system 23, an ion collection system 24, and an upper computer.
The gas supply system comprises a carbon dioxide gas cylinder 1, a nitrogen gas cylinder 2, an argon gas cylinder 3 and a hydrogen gas cylinder 4 which are arranged in parallel.
The flow control system comprises a first vacuum valve 9, and a carbon dioxide pipeline, a nitrogen pipeline, an argon pipeline and a hydrogen pipeline which are arranged in parallel; one end of the carbon dioxide pipeline, one end of the nitrogen pipeline, one end of the argon pipeline and one end of the hydrogen pipeline are respectively communicated with the carbon dioxide gas cylinder 1, the nitrogen gas cylinder 2, the argon gas cylinder 3 and the hydrogen cylinder 4, the other ends of the carbon dioxide pipeline, the nitrogen gas cylinder 2, the argon gas cylinder 3 and the hydrogen cylinder 4 are respectively connected with one end of a first vacuum valve 9, and the other end of the valve 9 is connected with the input end of a vacuum chamber; and a carbon dioxide mass flowmeter 5, a nitrogen mass flowmeter 6, an argon mass flowmeter 7 and a hydrogen mass flowmeter 8 are respectively arranged on the carbon dioxide pipeline, the nitrogen pipeline, the argon pipeline and the hydrogen pipeline.
The vacuum system comprises a vacuum chamber 10, a vacuum system main valve 11, a first molecular pump 12, a molecular pump front-stage valve 13 and a first dry pump 14 which are connected in sequence; the vacuum chamber 10 is provided with a first vacuum gauge 25 for measuring the vacuum degree therein; the vacuum chamber 10 is made of aluminum alloy, the inner surface of the vacuum chamber is subjected to anodic oxidation treatment, and a spark detector is placed in the vacuum chamber; the first molecular pump 12 and the first dry pump 14 are used to evacuate the vacuum chamber 10, reducing the gas pressure therein to meet the test pressure requirements.
Gas depressurization system the gas depressurization system is used to depressurize the gas entering the gas ionization system 22 from the vacuum chamber 10 to prevent the gas ionization system 22 from operating properly due to excessive pressure. The gas depressurization system comprises a depressurization cavity 16, a main valve 17 of the depressurization system, a second molecular pump 18, a third vacuum valve 19 and a second dry pump 20 which are connected in sequence; the input end of the decompression chamber 16 is communicated with the output end of the vacuum chamber 10 through a second vacuum valve 15; the decompression chamber 16 is provided with a second vacuum gauge 26 for measuring the degree of vacuum therein.
The gas ionization system 22, the mass spectrometry system 23 and the ion collection system 24 are connected in sequence, wherein the input end of the gas ionization system 22 is connected with the output end of the decompression chamber 16 through the fourth vacuum valve 21. The gas ionization system 22 is used to ionize gas molecules entering it to form ions; the gas ionization system 22 includes an ion source and an ion accelerator. The mass spectrometry system 23 is used to screen the ions and send them to the ion collection system 24. The ion collection system 24 generates corresponding current signals according to the received ion current concentrations of various gases and sends the signals to the upper computer.
The upper computer controls the opening and closing and the opening of the carbon dioxide mass flowmeter 5, the nitrogen mass flowmeter 6, the argon mass flowmeter 7 and the hydrogen mass flowmeter 8 according to the characteristic that the current signal and the ion current concentration sent by the ion collection system are in a direct proportion relation and by referring to the set gas concentration, so that the gas components in the vacuum chamber 10 are ensured.
The working process of the invention is as follows:
1. the upper computer is used for setting the concentration proportion of carbon dioxide, nitrogen, argon and hydrogen to be 95%: 3%: 1%: 1 percent;
2. placing the test product in the vacuum chamber 10, and then closing the vacuum chamber 10;
3. starting a first dry pump 14, a molecular pump front-stage valve 13 and a vacuum system main valve 11 in sequence, and starting to vacuumize the vacuum chamber 10;
4. when the pressure in the vacuum chamber 10 is reduced to below 10Pa, starting the first molecular pump 12, and vacuumizing the vacuum chamber 10 by using the first molecular pump 12;
5. when the pressure in the vacuum chamber 10 is reduced to 10-2When Pa, opening a first vacuum valve 9, and then closing a main valve 11 of the vacuum system;
6. opening a carbon dioxide mass flowmeter 5, a nitrogen mass flowmeter 6, an argon mass flowmeter 7 and a hydrogen mass flowmeter 8 in sequence according to the opening degrees of 95%, 3%, 1% and 1%, and filling carbon dioxide, nitrogen, argon and hydrogen into a vacuum chamber 10;
7. when the pressure in the vacuum chamber 10 reaches the pressure (1000Pa) on the surface of the spark, the opening of the main valve 11 of the vacuum system is adjusted to ensure that the pressure in the vacuum chamber 10 reaches dynamic balance at 1000 Pa;
8. opening the second vacuum valve 15 to allow the mixed gas of carbon dioxide, nitrogen, argon and hydrogen to enter the decompression chamber 16 from the vacuum chamber 10;
9. when the pressure in the decompression chamber reaches 1000Pa, closing the second vacuum valve 15, opening a main valve 17 of the depressurization system and a third vacuum valve 19, starting a second dry pump 20, and when the pressure in the decompression chamber 16 is reduced to below 10Pa, starting a second molecular pump 18 to vacuumize the decompression chamber 16;
10. when the pressure in the decompression chamber 16 is reduced to 10-2When the pressure is lower than Pa, a fourth vacuum valve 21 is opened, so that the mixed gas of carbon dioxide, nitrogen, argon and hydrogen enters a gas ionization system 22 from the decompression cavity 16, and the mixed gas is ionized in the gas ionization system 22;
11. ions generated by gas ionization enter a mass spectrum system 23, and mass spectrum separation is carried out on various ions;
12. the ions separated by the mass spectrum enter an ion collection system 24 for collection and analysis, the ion current concentrations of various gases are analyzed, corresponding current signals are generated according to the ion current concentrations of various gases (one type of gas corresponds to one current signal, the higher the ion current concentration is, the stronger the generated current signal is), and the current signals are sent to an upper computer;
13. the host computer is according to the current signal that receives, according to the characteristics of current signal and ion current concentration direct ratio, refers to each gas concentration proportion of preset, controls carbon dioxide mass flowmeter 5, nitrogen gas mass flowmeter 6, argon gas mass flowmeter 7, hydrogen gas mass flowmeter 8's aperture for the concentration proportion of carbon dioxide, nitrogen gas, argon gas, hydrogen in vacuum chamber 10 is 95: 3%: 1%: 1 percent;
14. the steps 7 to 13 are executed circularly every set time (for example, 10 minutes), so that the gas proportion in the vacuum chamber 10 can be ensured to truly simulate the gas composition on the surface of the spark in the test process.

Claims (6)

1. A mars surface gas composition analogue means which characterized in that: comprises a gas supply system, a flow control system, a vacuum system, a gas depressurization system, a gas ionization system (22), a mass spectrum system (23), an ion collection system (24) and an upper computer;
the gas supply system comprises a carbon dioxide gas cylinder (1), a nitrogen gas cylinder (2), an argon gas cylinder (3) and a hydrogen gas cylinder (4) which are arranged in parallel;
the flow control system comprises a first vacuum valve (9), and a carbon dioxide pipeline, a nitrogen pipeline, an argon pipeline and a hydrogen pipeline which are arranged in parallel; one end of each of the carbon dioxide pipeline, the nitrogen pipeline, the argon pipeline and the hydrogen pipeline is respectively communicated with a carbon dioxide gas cylinder (1), a nitrogen gas cylinder (2), an argon gas cylinder (3) and a hydrogen cylinder (4), the other end of each of the carbon dioxide pipeline, the nitrogen gas cylinder, the argon gas cylinder and the hydrogen cylinder is connected with one end of a first vacuum valve (9), and the other end of the valve (9) is connected with the input end of a vacuum chamber (10) in a vacuum system; a carbon dioxide mass flowmeter (5), a nitrogen mass flowmeter (6), an argon mass flowmeter (7) and a hydrogen mass flowmeter (8) are respectively arranged on the carbon dioxide pipeline, the nitrogen pipeline, the argon pipeline and the hydrogen pipeline;
the vacuum system comprises a vacuum chamber (10), a main valve (11) of the vacuum system and a first pumping unit which are connected in sequence; the vacuum chamber (10) is provided with a first vacuum gauge (25) for measuring the vacuum degree in the vacuum chamber; the vacuum chamber (10) is made of aluminum alloy or stainless steel material, the inner surface of the vacuum chamber is subjected to anodic oxidation treatment, and a spark detector is arranged in the vacuum chamber; the first air extraction unit is used for vacuumizing the vacuum chamber (10) to reduce the pressure of gas in the vacuum chamber to meet the requirement of test pressure;
the gas depressurization system comprises a depressurization cavity (16), a main valve (17) of the depressurization system and a second pumping unit which are connected in sequence; the input end of the decompression cavity (16) is communicated with the output end of the vacuum cavity (10) through a second vacuum valve (15); a second vacuum gauge (26) for measuring the vacuum degree in the decompression cavity (16) is arranged on the decompression cavity; one of the output ends of the decompression chamber (16) is connected to the input end of the gas ionization system (22) through a fourth vacuum valve (21); the second air extraction unit is used for vacuumizing the decompression cavity (16) so as to reduce the pressure of the air in the decompression cavity;
a gas ionization system (22) for ionizing gas molecules entering therein to form ions;
the mass spectrum system (23) is used for screening ions and then sending the screened ions into the ion collection system;
the ion collection system generates corresponding current signals according to the received ion current concentrations of various gases and sends the corresponding current signals to the upper computer;
the upper computer controls the opening degrees of the carbon dioxide mass flow meter (5), the nitrogen mass flow meter (6), the argon mass flow meter (7) and the hydrogen mass flow meter (8) according to the characteristic that the current signal and the ion current concentration sent by the ion collecting system are in a direct proportion relation, and therefore the gas component proportion in the vacuum chamber (10) is guaranteed.
2. A mars surface gas composition simulation apparatus according to claim 1, wherein: the first air extraction unit comprises a first molecular pump (12), a molecular pump front-stage valve (13) and a first dry pump (14) which are sequentially connected, and the first molecular pump (12) is connected with one of output ends of the vacuum chamber (10) through the vacuum system main valve (11).
3. A mars surface gas composition simulation apparatus according to claim 1 or 2, wherein: the second air pumping unit comprises a second molecular pump (18), a third vacuum valve (19) and a second dry pump (20) which are sequentially connected, and the second molecular pump (18) is connected with one output end of the decompression cavity (16) through a main valve (17) of the decompression system.
4. A method of simulating active surface gas components using a mars surface gas components simulator as claimed in any one of claims 1-3, comprising the steps of:
1) the upper computer is used for setting the concentration proportion of carbon dioxide, nitrogen, argon and hydrogen to be 95%: 3%: 1%: 1 percent;
2) placing the test product in the vacuum chamber (10) and then closing the vacuum chamber (10);
3) the main valve (11) of the vacuum system is opened, and the vacuum chamber (10) is vacuumized by the first air pumping unitWhen the pressure in the vacuum chamber (10) is reduced to 10-2When Pa, a first vacuum valve (9) is opened, and then a main valve (11) of a vacuum system is closed;
4) opening a carbon dioxide mass flow meter (5), a nitrogen mass flow meter (6), an argon mass flow meter (7) and a hydrogen mass flow meter (8), and filling carbon dioxide, nitrogen, argon and hydrogen into a vacuum chamber (10);
5) when the pressure in the vacuum chamber (10) reaches the pressure of the surface of the spark, namely 1000Pa, the opening degree of a main valve (11) of the vacuum system is adjusted, so that the pressure in the vacuum chamber (10) reaches dynamic balance at 1000 Pa;
6) opening a second vacuum valve (15) according to the opening degrees of 95%, 3%, 1% and 1% to enable the mixed gas of carbon dioxide, nitrogen, argon and hydrogen to enter a decompression chamber (16) from the vacuum chamber (10);
7) when the pressure in the decompression cavity reaches 1000Pa, closing a second vacuum valve (15), opening a main valve (17) of the decompression system, and vacuumizing the decompression cavity by using a second air pumping unit;
8) when the pressure in the decompression chamber (16) is reduced to 10-2When the pressure is lower than Pa, a fourth vacuum valve (21) is opened, so that the mixed gas of carbon dioxide, nitrogen, argon and hydrogen enters a gas ionization system (22) from a decompression cavity (16), and the mixed gas is ionized in the gas ionization system (22);
9) ions generated by gas ionization enter a mass spectrum system (23) to carry out mass spectrum separation on various ions;
10) the ions separated by the mass spectrum enter an ion collection system (24) for collection and analysis, the ion current concentration of each gas is analyzed, corresponding current signals are generated according to the ion current concentration of each gas, and the current signals are sent to an upper computer;
11) the host computer is according to the current signal that receives, according to current signal and ion current concentration proportional relation, refers to each gas concentration proportion of preset, controls the aperture of carbon dioxide mass flowmeter (5), nitrogen gas mass flowmeter (6), argon gas mass flowmeter (7), hydrogen mass flowmeter (8) for the concentration proportion of carbon dioxide, nitrogen gas, argon gas, hydrogen in vacuum chamber (10) is 95: 3%: 1%: 1 percent;
12) and (5) to 11) are executed in each set time cycle, so that the gas proportion in the vacuum chamber (10) can truly simulate the gas composition on the surface of the spark in the test process.
5. The method of claim 4, wherein: the step 3) is specifically as follows:
3.1) starting a first dry pump (14), a molecular pump front-stage valve (13) and a vacuum system main valve (11) in sequence to start to vacuumize a vacuum chamber (10);
3.3) when the pressure in the vacuum chamber (10) is reduced to be less than 10Pa, starting the first molecular pump (12), and vacuumizing the vacuum chamber (10) by using the first molecular pump (12);
3.3) when the pressure in the vacuum chamber (10) drops to 10-2Pa, the first vacuum valve (9) is opened, and then the main valve (11) of the vacuum system is closed.
6. The method of claim 5, wherein: the step 7) is specifically as follows: and (3) closing the second vacuum valve (15), opening a main valve (17) of the depressurization system and a third vacuum valve (19), starting a second dry pump (20), and starting a second molecular pump (18) to vacuumize the depressurization chamber (16) when the pressure in the depressurization chamber (16) is reduced to be below 10 Pa.
CN202010323062.1A 2020-04-22 2020-04-22 Mars surface gas composition simulation device and method Active CN111579261B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010323062.1A CN111579261B (en) 2020-04-22 2020-04-22 Mars surface gas composition simulation device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010323062.1A CN111579261B (en) 2020-04-22 2020-04-22 Mars surface gas composition simulation device and method

Publications (2)

Publication Number Publication Date
CN111579261A true CN111579261A (en) 2020-08-25
CN111579261B CN111579261B (en) 2021-03-19

Family

ID=72122634

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010323062.1A Active CN111579261B (en) 2020-04-22 2020-04-22 Mars surface gas composition simulation device and method

Country Status (1)

Country Link
CN (1) CN111579261B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113899520A (en) * 2021-09-13 2022-01-07 中国航空工业集团公司哈尔滨空气动力研究所 Carbon dioxide component control system and method for Mars wind tunnel
CN114384145A (en) * 2021-12-27 2022-04-22 常熟市虞华真空设备科技有限公司 Planetary atmospheric composition ratio online detection system, mixing system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113899520A (en) * 2021-09-13 2022-01-07 中国航空工业集团公司哈尔滨空气动力研究所 Carbon dioxide component control system and method for Mars wind tunnel
CN113899520B (en) * 2021-09-13 2023-04-07 中国航空工业集团公司哈尔滨空气动力研究所 Carbon dioxide component control system of Mars wind tunnel and control method thereof
CN114384145A (en) * 2021-12-27 2022-04-22 常熟市虞华真空设备科技有限公司 Planetary atmospheric composition ratio online detection system, mixing system and method
CN114384145B (en) * 2021-12-27 2024-04-12 常熟市虞华真空设备科技有限公司 Planetary atmosphere component proportioning on-line detection system, mixing system and method

Also Published As

Publication number Publication date
CN111579261B (en) 2021-03-19

Similar Documents

Publication Publication Date Title
CN111579261B (en) Mars surface gas composition simulation device and method
CN105158489B (en) A kind of supercriticality gas absorption desorption apparatus and its using method
US20190107517A1 (en) Refilling-type online chromatographic detector for sulphur hexafluoride decomposition products
CN107843655B (en) Device and method for joint test of gas content of rock and C1-C15 light hydrocarbon components
CN102620957A (en) Chromatographic analyzing and sampling system for bottled silane sample
CN107065950A (en) A kind of control method based on mass spectrometer vacuum intracavitary air pressure change
CN106017819A (en) Device and method for measuring partial pressure leakage rate
GB2420009A (en) Method and apparatus for mass spectrometry
CN113804577A (en) Screening method of environment-friendly insulating gas adsorbent
CN211627463U (en) Online thermal desorption gas circuit system
CN111678036A (en) Sulfur hexafluoride tail gas recovery device
CN109323909B (en) Gas automatic separation system for inertness in small-gas-volume environment sample
CN108469490B (en) Automatic analysis device for components and carbon isotopes of gas in thermal simulation gold tube of hydrocarbon source rock
CN107706081B (en) The application method of mass spectrometer system, chromatography-mass spectroscopy system and the two
CN114415004A (en) Simulation true type GIS equipment fault characteristic gas diffusion method
Ottens et al. Real-time quantitative analysis of H2, He, O2, and Ar by quadrupole ion trap mass spectrometry
CN115266845A (en) Fixed bed activated carbon adsorption saturation distribution dynamic detection method based on electrical impedance tomography
CN204924843U (en) Material partial pressure gassing rate tester
JP2013019672A (en) Measuring method, nuclear fuel failure detection method with measuring method, measuring apparatus and its usage method
CN216411465U (en) Test device for simulating fault gas in electrical equipment
CN115791353A (en) Standard sample dynamic simulator
CN208722025U (en) Gas compartment is vented ventilating control system
CN201145651Y (en) Sampling apparatus for measuring plant discharged N2O and 15/14 N isotopic abundance
CN206114371U (en) Storage device is discharged to portable gaseous collection
CN213689496U (en) Gas sampling and detecting system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant