A system for configuring standard gas and a method for configuring standard gas

Abstract

The present invention provides a system and configuration method for configuring standard gas. The system includes a vacuum pump group, a main gas source, a secondary gas source, a mixing device and a storage device, and the vacuum pump group is used to keep the system in a vacuum state. The input end of the main input pipeline of the mixing device is connected to the main gas source, the output end is connected to the mixer, and the main input pipeline is provided with a first pneumatic valve and a second pneumatic valve at intervals, the input end of the secondary input pipeline is connected to the secondary gas source, the output end is connected to the mixer, and the secondary input pipeline is provided with a first manual valve and a second manual valve at intervals, the input end of the output pipeline is connected to the mixer, the output end is connected to the storage device, and the output pipeline is provided with a third pneumatic valve and a fourth pneumatic valve at intervals. The system and configuration method of the present application can accurately achieve the mixing of two gases in a predetermined ratio by means of free diffusion of gas, and the prepared gas can be packaged multiple times and can be used for up to decades.

Description

Technical Field

[0001] The present invention relates to the technical field of quantitative configuration of standard gases, and in particular to a system for configuring standard gases and a method for configuring standard gases. Background Art

[0002] Extraterrestrial samples 3 He / 4 He ratio is usually greater than 10 -3 , Earth samples 3 He / 4 He is usually less than 10 -5 , the noble gas mass spectrometers are equipped with a Niel-type ion source that is sensitive to gas pressure, and the mass discrimination effect under different pressures is significantly different. This makes it possible to have an uncontrollable mass discrimination effect when calibrating samples with traditional air, and this phenomenon is particularly significant for helium isotopes. Therefore, it is necessary to prepare standard gases with different He isotope characteristics to calibrate different samples.

[0003] The existing method of preparing standard gas is mainly the weighing method, and the required equipment includes gas preparation equipment and weighing equipment. The gas preparation equipment includes a vacuum pump, a vacuum gauge, high and low pressure gauges, valves, gas cylinder fixtures, chassis, etc. The weighing equipment is a high-precision balance. Since the gas cylinder loaded with gas has a large mass, usually up to 20kg, and the mass of the target gas to be filled is less than the gram level.

[0004] In order to accurately weigh a small amount of gas filled in a gas cylinder with a large mass, in addition to having high requirements for the balance, it is also required to ensure a certain weighing amount (for component gases with too small mass, multiple dilution methods are used for preparation). Various measures must be taken during the weighing operation to ensure that the weighing reaches a high accuracy. In addition, the weighing method is usually not configured with high-purity gas, especially for He isotopes, nitrogen is usually used as the counterweight gas. This is a huge uncertainty for the subsequent high-precision testing of He isotopes. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a system and method for configuring a rare gas standard gas, in particular 3 He and 4 He two isotope gases are mixed in a predetermined ratio. Specifically, accurate configuration is performed by free diffusion of gases. In addition, the high vacuum configuration system of the present application can accurately achieve 3 He and 4 The two gases are mixed in a predetermined ratio, and the prepared gas can be packaged multiple times and used for decades.

[0006] To achieve the above objectives and other related objectives, the present invention is achieved through the following technical solutions.

[0007] The present invention provides a system for configuring standard gas, comprising a vacuum pump group, a main gas source, a secondary gas source, a mixing device and a storage device connected by pipelines;

[0008] The vacuum pump group is used to keep the system in a vacuum state;

[0009] The mixing device comprises a main input pipeline, a secondary input pipeline, an output pipeline and a mixer;

[0010] The input end of the main input pipeline is connected to the main gas source, and the output end is connected to the mixer, and a first pneumatic valve and a second pneumatic valve are arranged on the main input pipeline at intervals;

[0011] The input end of the auxiliary input pipeline is communicated with the auxiliary gas source, and the output end is communicated with the mixer, and the auxiliary input pipeline is provided with a first manual valve and a second manual valve at intervals;

[0012] The input end of the output pipeline is connected to the mixer, and the output end is connected to the storage device;

[0013] The output pipeline is provided with a third pneumatic valve and a fourth pneumatic valve at intervals.

[0014] In a feasible example, the storage volume between the first pneumatic valve and the second pneumatic valve is 0.05-1 mL. Optionally, the storage volume can be 0.05 mL, 0.1 mL, 0.2 mL, 0.3 mL, 0.4 mL, 0.5 mL, 0.6 mL, 0.7 mL, 0.8 mL, 0.9 mL or 1 mL.

[0015] In a feasible example, the storage volume between the first manual valve and the second manual valve is 15-50 mL. Optionally, the storage volume can be 15 mL, 20 mL, 25 mL, 30 mL, 35 mL, 40 mL, mL, 50 mL.

[0016] In a feasible example, the storage volume between the third pneumatic valve and the fourth pneumatic valve is 0.05-1 mL. Optionally, the storage volume can be 0.05 mL, 0.1 mL, 0.2 mL, 0.3 mL, 0.4 mL, 0.5 mL, 0.6 mL, 0.7 mL, 0.8 mL, 0.9 mL or 1 mL.

[0017] In a feasible example, the mixing device includes a first four-way, a main input pipeline, and a first vacuum pipeline; the four ports of the first four-way are respectively connected to the output end of the main input pipeline, the output end of the auxiliary input pipeline, the input end of the main input pipeline and the input end of the first vacuum pipeline, and the output end of the main input pipeline is connected to the mixer, and the output end of the first vacuum pipeline is connected to the vacuum pump group.

[0018] In a feasible example, a fourth manual valve is provided at the output end of the main input pipeline;

[0019] A third manual valve is disposed on the first vacuum pipeline.

[0020] In a feasible example, the storage device includes a storage pipeline and a storage device; one end of the storage pipeline is connected to the output pipeline, and the other end is connected to the storage device; and a fifth pneumatic valve and a sixth pneumatic valve are provided on the storage pipeline at intervals.

[0021] In a feasible example, the storage device includes a second four-way pipe, a first main branch pipe, and a second main branch pipe;

[0022] The storage pipeline comprises a front storage pipeline and a rear storage pipeline, the input end of the front storage pipeline is communicated with the output pipeline, the rear storage pipeline is communicated with the storage device, and the fifth pneumatic valve and the sixth pneumatic valve are arranged on the rear storage pipeline at intervals;

[0023] The four ports of the second four-way pipe are respectively connected to the output end of the front storage pipeline, the input end of the rear storage pipeline, the input end of the first main branch pipeline and the input end of the second main branch pipeline.

[0024] In a feasible example, the storage device further includes a plurality of first branch pipelines arranged in parallel and respectively connected to the first main branch pipeline; a plurality of second branch pipelines arranged in parallel and respectively connected to the second main branch pipeline;

[0025] Each of the first branch pipelines is provided with a seventh pneumatic valve and an eighth pneumatic valve which are arranged at intervals, and each of the first branch pipelines is connected to a first storage device;

[0026] Each of the second branch pipelines is provided with a ninth pneumatic valve and a tenth pneumatic valve which are arranged at intervals, and each of the second branch pipelines is connected to a second storage device.

[0027] In a feasible example, a sixth manual valve is provided at the input end of the first main branch pipeline, and a seventh manual valve is provided at the input end of the second main branch pipeline.

[0028] In a feasible example, the storage device includes a second vacuum line, the second vacuum line is communicated with the front storage line, and a fifth manual valve is provided on the second vacuum line.

[0029] In some feasible examples, the material of the pipeline is 316L stainless steel; and / or the material of the manual valve is metal; and / or the vacuum pump group can satisfy the system vacuum degree maintained at 0.1~6×10 -6 Pa; and / or, the main gas source is 3 He gas tank, the auxiliary gas source is 4 And gas tank.

[0030] A second aspect of the present application provides a method for configuring standard gas, using the system for configuring standard gas described in the first aspect, comprising the following steps:

[0031] 1) The vacuum pump group maintains the vacuum of the entire system at 10 -6 Pa magnitude;

[0032] 2) Take V1 volume of the first gas from the auxiliary gas source: open the first manual valve, balance for 1-5 minutes, close the first manual valve, and V1 volume of the first gas is stored between the first manual valve and the second manual valve;

[0033] Take V2 volume of the second gas from the main gas source: open the first pneumatic valve, balance for 1-5 minutes, close the first pneumatic valve, and store V2 volume of the second gas between the first pneumatic valve and the second pneumatic valve;

[0034] 3) Mix the first gas and the second gas: block the connection between the vacuum pump group and the system pipeline, open the second pneumatic valve and the second manual valve, balance for 5 to 20 minutes, and the mixed gas enters the mixer for storage;

[0035] 4) Dispense V3 volume of mixed gas: open the third pneumatic valve, balance for 1-5 minutes, close the third pneumatic valve, and V3 volume of mixed gas is stored between the third pneumatic valve and the fourth pneumatic valve;

[0036] 5) Open the fourth pneumatic valve, and the mixed gas of volume V3 is input into the storage device. Specifically, open the fourth pneumatic valve, the fifth pneumatic valve, the sixth pneumatic valve, the seventh pneumatic valve, the eighth pneumatic valve, the ninth pneumatic valve and the tenth pneumatic valve, and after balancing for 5 to 20 minutes, close the above pneumatic valves, and the mixed gas enters the storage device, each first storage device and each second storage device respectively;

[0037] In some feasible examples, V1=15~50mL, V2=0.05~1mL, V3=0.05~1mL;

[0038] And / or, the second gas is 3He gas, the first gas is 4 Cheer.

[0039] In summary, the present invention has at least the following beneficial effects:

[0040] The system and method for configuring the noble gas standard gas of the present application can mix at least two isotope gases in a predetermined ratio. Accurate configuration is performed by means of free diffusion of the gas. In addition, the high vacuum configuration device of the present application can accurately achieve 3 He and 4 The two gases are mixed in a predetermined ratio, and the prepared gas can be packaged multiple times and used for decades. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the structure of the system for configuring the rare gas standard gas in the present invention.

[0042] Markings in the figure:

[0043] 1. Vacuum pump group; 2. Main gas source; 3. Auxiliary gas source; 4. Mixing device; 41. Main input pipeline; 411. First pneumatic valve; 412. Second pneumatic valve; 42. Auxiliary input pipeline; 421. First manual valve; 422. Second manual valve; 43. Output pipeline; 431. Third pneumatic valve; 432. Fourth pneumatic valve; 44. Mixer; 45. First four-way valve; 46. Total input pipeline; 461. Fourth manual valve; 47. First vacuum pipeline; 471. Third manual valve; 5. Storage device; 51. Storage pipeline , 511, the fifth pneumatic valve, 512, the sixth pneumatic valve, 52, the storage device, 53, the second four-way valve, 54, the first main branch pipeline, 541, the first branch pipeline, 542, the seventh pneumatic valve, 543, the eighth pneumatic valve, 544, the first storage device, 545, the sixth manual valve, 55, the second main branch pipeline, 551, the second branch pipeline, 552, the ninth pneumatic valve, 553, the tenth pneumatic valve, 554, the second storage device, 555, the seventh manual valve, 56, the second vacuum pipeline, 561, the fifth manual valve. DETAILED DESCRIPTION

[0044] Rare gas mass spectrometers are equipped with a Neel-type ion source that is sensitive to gas pressure, and the mass discrimination effect under different pressures is significantly different. This makes it possible to have an uncontrollable mass discrimination effect when calibrating samples with traditional air, and this phenomenon is particularly significant on helium isotopes. Therefore, it is necessary to prepare standard gases with different isotopic characteristics to calibrate different samples. The present application aims to achieve accurate mixing of at least two isotopic gases in a predetermined ratio through the free diffusion of gases, and the prepared gas can be packaged multiple times and can be used for decades.

[0045] The following specific embodiments illustrate the implementation of the present invention. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Before further describing the specific implementation of the present invention, it should be understood that the protection scope of the present invention is not limited to the specific implementation scheme described below; it should also be understood that the terms used in the examples of the present invention are for describing specific implementation schemes, not for limiting the protection scope of the present invention. The test methods in the following examples where specific conditions are not specified are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0046] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those generally understood by those skilled in the art. In addition to the specific methods, equipment, and materials used in the embodiments, according to the grasp of the prior art by those skilled in the art and the record of the present invention, any methods, equipment, and materials of the prior art similar or equivalent to the methods, equipment, and materials described in the embodiments of the present invention can also be used to realize the present invention.

[0047] Example 1

[0048] See also Figure 1 The system for configuring standard gas includes a vacuum pump group 1, a main gas source 2, a secondary gas source 3, a mixing device 4 and a storage device 5 connected by pipelines. The vacuum pump group 1 is used to keep the system in a vacuum state. The mixing device 4 includes a main input pipeline 41, a secondary input pipeline 42, an output pipeline 43 and a mixer 44. The input end of the main input pipeline 41 is connected to the main gas source 2, the output end is connected to the mixer 44, and the main input pipeline 41 is provided with a first pneumatic valve 411 and a second pneumatic valve 412 at intervals. The input end of the secondary input pipeline 42 is connected to the secondary gas source 3, the output end is connected to the mixer 44, and the secondary input pipeline 42 is provided with a first manual valve 421 and a second manual valve 422 at intervals. The input end of the output pipeline 43 is connected to the mixer 44, and the output end is connected to the storage device 5. The output pipeline 43 is provided with a third pneumatic valve 431 and a fourth pneumatic valve 432 at intervals.

[0049] Specifically, the interface between the main gas source 2 and the auxiliary gas source 3 and the pipeline is a CGA interface. More specifically, the main gas source 2 and the auxiliary gas source 3 are connected to the pipeline through CGA and CF conversion, and the remaining structures are all CF interfaces, which ensures the vacuum degree of the pipeline system and allows the main gas source 2, the auxiliary gas source 3 and the mixer 44 to be replaced.

[0050] Specifically, the number of the main gas source 2 and the auxiliary gas source 3 is set according to the specific configuration requirements. For example, the main gas source 2 is set with one 3 He gas tank, auxiliary gas source 3 set one 4 He gas tank. If it is a three-isotope configuration, you can add a main gas source or a secondary gas source.

[0051] More specifically, the storage volume between the first pneumatic valve 411 and the second pneumatic valve 412 can be selected according to the needs of the appropriate type of pneumatic valve and the appropriate volume of the pipeline connecting the two pneumatic valves, or the pipeline connecting the first pneumatic valve 411 and the second pneumatic valve 412 can be set in a detachable and replaceable manner, that is, the pipeline between the two pneumatic valves can be detachably connected to the first pneumatic valve 411 and the second pneumatic valve 412, so that it can be replaced according to the specific configuration needs. Similarly, the pipeline connecting the first manual valve 421 and the second manual valve 422, and the pipeline connecting the third pneumatic valve 431 and the fourth pneumatic valve 432 can be similarly configured. Therefore, the system of this example can accurately prepare gases of different ratios according to needs, and can also be replaced and repackaged more flexibly.

[0052] In a specific example, the storage volume between the first pneumatic valve 411 and the second pneumatic valve 412 is 0.05-1 mL. In this example, it is 0.1 mL. It is worth noting that the storage volume between the first pneumatic valve 411 and the second pneumatic valve 412 is the storage volume stored in the first pneumatic valve 411 and the second pneumatic valve 412 and in the pipeline connecting the first pneumatic valve 411 and the second pneumatic valve 412.

[0053] In a specific example, the storage volume between the first manual valve 421 and the second manual valve 422 is 15-50 mL. In this example, it is 30 mL. Similarly, the storage volume between the first manual valve 421 and the second manual valve 422 is the storage volume stored in the first manual valve 421 and the second manual valve 422 and the pipeline connecting the first manual valve 421 and the second manual valve 422.

[0054] In a specific example, the storage volume between the third pneumatic valve 431 and the fourth pneumatic valve 432 is 0.05-1 mL. In this example, it is 0.1 mL. It is worth noting that the storage volume between the third pneumatic valve 431 and the fourth pneumatic valve 432 is the storage volume in the third pneumatic valve 431 and the fourth pneumatic valve 432 and the pipeline connecting the third pneumatic valve 431 and the fourth pneumatic valve 432.

[0055] In a specific example, the mixing device 4 includes a first four-way 45, a total input pipeline 46, and a first vacuum pipeline 47. The four ports of the first four-way 45 are respectively connected to the output end of the main input pipeline 41, the output end of the auxiliary input pipeline 42, the input end of the total input pipeline 46, and the input end of the first vacuum pipeline 47, and the output end of the total input pipeline 46 is connected to the mixer 44, and the output end of the first vacuum pipeline 47 is connected to the vacuum pump group 1. In a specific example, the output end of the total input pipeline 46 is provided with a fourth manual valve 461. The purpose of setting the fourth manual valve 461 is that when the mixed gas is stored in the mixer 44, the fourth manual valve 461 can be closed, and the third pneumatic valve 431 and the fourth pneumatic valve 432 can be closed, thereby forming a closed system, and this part of the gas can be reserved for later use. If it is necessary to configure gases with other isotope ratios, only this part can be replaced.

[0056] In a specific example, a third manual valve 471 is provided on the first vacuum pipeline 47 , and the connection and disconnection between the vacuum pump group 1 and the system pipeline are controlled by the third manual valve 471 .

[0057] In a specific example, the storage device 5 includes a storage pipeline 51 and a storage 52; one end of the storage pipeline 51 is connected to the output pipeline 43, and the other end is connected to the storage 52; and the fifth pneumatic valve 511 and the sixth pneumatic valve 512 are arranged on the storage pipeline 51, and the closed space between the fifth pneumatic valve 511 and the sixth pneumatic valve 512 forms a quantitative volume. When the gas to be tested is stored in the storage 52, the fifth pneumatic valve 511 and the sixth pneumatic valve 512 are closed, and the storage 52 and the fifth pneumatic valve 511 and the sixth pneumatic valve 512 can be removed from this system to any system for testing rare gas isotopes for measurement, and quantitative sampling is performed using the quantitative volume between 511 and 512.

[0058] In a specific example, the storage device 5 includes a second four-way valve 53, a first main branch pipeline 54, and a second main branch pipeline 55. The storage pipeline 51 includes a front storage pipeline and a rear storage pipeline, the input end of the front storage pipeline is connected to the output pipeline 43, the rear storage pipeline is connected to the storage device 52, and the fifth pneumatic valve 511 and the sixth pneumatic valve 512 are arranged on the rear storage pipeline. The four ports of the second four-way valve 53 are respectively connected to the output end of the front storage pipeline, the input end of the rear storage pipeline, the input end of the first main branch pipeline 54, and the input end of the second main branch pipeline 55. The arrangement of the first main branch pipeline 54 and the second main branch pipeline 55 makes the system flexible to use and can adapt to the requirements of packaging of different volumes and different quantities.

[0059] In a specific example, the storage device 5 also includes a plurality of first branch pipelines 541 that are arranged in parallel and are respectively connected to the first main branch pipeline 54. A plurality of second branch pipelines 551 that are arranged in parallel and are respectively connected to the second main branch pipeline 55. Each first branch pipeline 541 is respectively provided with a seventh pneumatic valve 542 and an eighth pneumatic valve 543 that are arranged at intervals, and each first branch pipeline 541 is respectively connected to a first storage device 544. Each second branch pipeline 551 is respectively provided with a ninth pneumatic valve 552 and a tenth pneumatic valve 553 that are arranged at intervals, and each second branch pipeline 551 is respectively connected to a second storage device 554. Specifically, the number of the first branch pipeline 541 and the second branch pipeline 551 is set according to needs. In this example, refer to Figure 1 , two parallel first branch pipelines 541 and two parallel second branch pipelines 551 are provided. The purpose of the seventh pneumatic valve 542, the eighth pneumatic valve 543 and the first storage 544, the purpose of the ninth pneumatic valve 552, the tenth pneumatic valve 553 and the second storage 554 are similar to the purpose of the fifth pneumatic valve 511, the sixth pneumatic valve 512 and the storage 52, that is, each storage can be taken down or each storage together with the closed area formed by the pneumatic valve connected thereto can be taken down to any rare gas isotope measurement system for testing.

[0060] In a specific example, the input end of the first main branch pipeline 54 is provided with a sixth manual valve 545, and the input end of the second main branch pipeline 55 is provided with a seventh manual valve 555. Figure 1 The two first storage devices 544, the two second storage devices 554 and the storage device 52, after storing the gas, together with their respective two starting valves, can be moved to other rare gas testing systems for testing. The role of the sixth manual valve 545 and the seventh manual valve 555 is, on the one hand, to provide an extra valve and an extra layer of gas sealing protection, and on the other hand, to prevent the second four-way valve 53 from being exposed to the atmosphere after the storage device is removed.

[0061] In a specific example, the storage device 5 includes a second vacuum pipeline 56, which is connected to the front storage pipeline, and a fifth manual valve 561 is provided on the second vacuum pipeline 56. Because the volume between the third pneumatic valve 431 and the fourth pneumatic valve 432 is small and the pipeline is narrow, it is necessary to set the second vacuum pipeline 56 to connect the vacuum pump group 1 to ensure the vacuum degree requirement of the storage device 5. It is worth noting that in order to accurately realize the configuration of isotopes with a specific ratio and ensure multiple subpackaging, the system needs to be able to maintain the vacuum degree of each part of the system.

[0062] In some specific examples, the material of the pipeline is 316L stainless steel, the material of the manual valve is metal, and the vacuum pump group can meet the system vacuum degree to maintain (0.1~6)×10-6 Pa, preferably maintained at 10 -6 Pa level.

[0063] Example 2

[0064] A test method is provided, which is performed using the test system of Example 1, as follows:

[0065] 1) Vacuum pump group 1 maintains the vacuum of the entire system at 10 -6 Pa level, specifically, maintained at 3×10 -6 Pa;

[0066] 2) Take V1 volume from auxiliary gas source 3 4 He gas: open the first manual valve 421, balance for 2 minutes, close the first manual valve 421, the volume of V1 is 4 He gas is stored between the first manual valve 421 and the second manual valve 422, V1 = 30 mL;

[0067] Take V2 volume from the main gas source 2 3 He gas: open the first pneumatic valve 411, balance for 2 minutes, close the first pneumatic valve 411, and a second gas with a volume of V2 is stored between the first pneumatic valve 411 and the second pneumatic valve 412, V2=0.1 mL.

[0068] 3) Mixing the first gas and the second gas: close the third manual valve 471 to block the connection between the vacuum pump group 1 and the system pipeline, open the second pneumatic valve 412, the second manual valve 422 and the fourth manual valve 461, and after balancing for 10 minutes, close the second pneumatic valve 412, the second manual valve 422 and the fourth manual valve 461, and the mixed gas enters the mixer 44 for storage. The mixer 44 is a Mixing Tank (5L).

[0069] 4) Dispensing V3 volume of the mixed gas: open the third pneumatic valve 431 , balance for 2 minutes, close the third pneumatic valve 431 , and the V3 volume of the mixed gas is stored between the third pneumatic valve 431 and the fourth pneumatic valve 432 .

[0070] 5) Open the fourth pneumatic valve 432, the fifth pneumatic valve 511 and the sixth pneumatic valve 512, and input V3 volume of mixed gas into the storage device 5, which is a Test Tank (storage, 5L).

[0071] Example 3

[0072] If you need to load a 1L container with gas, you need to replace the 5L test tank with a 1L test tank, and then do the following:

[0073] After step 4) of Example 2, the fifth pneumatic valve 511, the sixth pneumatic valve 512, the seventh pneumatic valve 542, the eighth pneumatic valve 543, the ninth pneumatic valve 552 and the tenth pneumatic valve 553 are opened. After balancing for 5 to 20 minutes, the pneumatic valves are closed, and the mixed gas enters the storage 52, each first storage 544 and each second storage 554. The storage 52 is used as a test tank (1L), and the two first storages 544 and each second storage 554 are used as send tanks (1L).

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A system for configuring standard gas, characterized in that: It comprises a vacuum pump group (1), a main gas source (2), a secondary gas source (3), a mixing device (4) and a storage device (5) connected by pipelines; The vacuum pump group (1) is used to keep the system in a vacuum state; The mixing device (4) comprises a main input pipeline (41), a secondary input pipeline (42), an output pipeline (43) and a mixer (44); The input end of the main input pipeline (41) is in communication with the main gas source (2), and the output end is in communication with the mixer (44), and a first pneumatic valve (411) and a second pneumatic valve (412) are provided on the main input pipeline (41) at intervals; The input end of the auxiliary input pipeline (42) is in communication with the auxiliary gas source (3), and the output end is in communication with the mixer (44), and a first manual valve (421) and a second manual valve (422) are provided on the auxiliary input pipeline (42) at intervals; The input end of the output pipeline (43) is in communication with the mixer (44), and the output end is in communication with the storage device (5); The output pipeline (43) is provided with a third pneumatic valve (431) and a fourth pneumatic valve (432) at intervals; The storage device (5) comprises a storage pipeline (51) and a storage device (52); one end of the storage pipeline (51) is in communication with the output pipeline (43), and the other end is in communication with the storage device (52); and a fifth pneumatic valve (511) and a sixth pneumatic valve (512) are provided on the storage pipeline (51) at intervals; The storage device (5) comprises a second cross-connection (53), a first main branch pipeline (54) and a second main branch pipeline (55); The storage pipeline (51) comprises a front storage pipeline and a rear storage pipeline, the input end of the front storage pipeline is in communication with the output pipeline (43), the rear storage pipeline is in communication with the storage device (52), and the fifth pneumatic valve (511) and the sixth pneumatic valve (512) are arranged on the rear storage pipeline at intervals; The four ports of the second four-way (53) are respectively connected to the output end of the front storage pipeline, the input end of the rear storage pipeline, the input end of the first main branch pipeline (54) and the input end of the second main branch pipeline (55), wherein the first main branch pipeline (54) and the second main branch pipeline (55) are arranged so that the system can adapt to the packaging requirements of different volumes and the packaging requirements of different quantities; A sixth manual valve (545) is provided at the input end of the first main branch pipeline (54), and a seventh manual valve (555) is provided at the input end of the second main branch pipeline (55); The vacuum pump group is used to maintain the system vacuum degree at (0.1~6)×10 -6 Pa; The mixing device (4) comprises a first four-way pipe (45), a main input pipeline (46), and a first vacuum pipeline (47); the four ports of the first four-way pipe (45) are respectively connected to the output end of the main input pipeline (41), the output end of the auxiliary input pipeline (42), the input end of the main input pipeline (46), and the input end of the first vacuum pipeline (47); the output end of the main input pipeline (46) is connected to the mixer (44), and the output end of the first vacuum pipeline (47) is connected to the vacuum pump group (1); A fourth manual valve (461) is provided at the output end of the main input pipeline (46). The storage volume between the first pneumatic valve (411) and the second pneumatic valve (412) is 0.05 to 1 mL, wherein the storage volume between the first pneumatic valve (411) and the second pneumatic valve (412) is the storage volume stored in the first pneumatic valve (411) and the second pneumatic valve (412) and in the pipeline connecting the first pneumatic valve (411) and the second pneumatic valve (412); The storage volume between the first manual valve (421) and the second manual valve (422) is 15 to 50 mL, wherein the storage volume between the first manual valve (421) and the second manual valve (422) is the storage volume stored in the first manual valve (421) and the second manual valve (422) and in the pipeline connecting the first manual valve (421) and the second manual valve (422); The storage volume between the third pneumatic valve (431) and the fourth pneumatic valve (432) is 0.05 to 1 mL, wherein the storage volume between the third pneumatic valve (431) and the fourth pneumatic valve (432) is the storage volume within the third pneumatic valve (431) and the fourth pneumatic valve (432) and the pipeline connecting the third pneumatic valve (431) and the fourth pneumatic valve (432); A third manual valve (471) is provided on the first vacuum pipeline (47); The storage device (5) further comprises a plurality of first branch pipelines (541) arranged in parallel and respectively connected to the first main branch pipeline (54); a plurality of second branch pipelines (551) arranged in parallel and respectively connected to the second main branch pipeline (55); Each of the first branch pipelines (541) is provided with a seventh pneumatic valve (542) and an eighth pneumatic valve (543) arranged at intervals, and each of the first branch pipelines (541) is connected to a first storage device (544); Each of the second branch pipelines (551) is provided with a ninth pneumatic valve (552) and a tenth pneumatic valve (553) arranged at intervals, and each of the second branch pipelines (551) is connected to a second storage device (554); And / or, the storage device (5) comprises a second vacuum pipeline (56), the second vacuum pipeline (56) is in communication with the front storage pipeline, and a fifth manual valve (561) is provided on the second vacuum pipeline (56); All pipelines are made of 316L stainless steel; The material of each manual valve is metal; The main gas source (2) is 3 He gas tank, the auxiliary gas source (3) is 4 He gas tank; After the mixed gas is stored in the mixer (44), the fourth manual valve (461) is closed, and the third pneumatic valve (431) and the fourth pneumatic valve (432) are closed, thereby forming a closed system; After the gas to be tested is stored in the storage (52), the fifth pneumatic valve (511) and the sixth pneumatic valve (512) are closed, and the storage (52) and the fifth pneumatic valve (511) and the sixth pneumatic valve (512) can be removed from the system and transferred to any system for testing noble gas isotopes for measurement, and quantitative sampling is performed using the quantitative volume between the fifth pneumatic valve (511) and the sixth pneumatic valve (512); A method for configuring standard gas is performed by a system for configuring standard gas, comprising the following steps: 1) System preparation, vacuum pump group (1) maintains the vacuum of the entire system at 10 -6 Pa magnitude; 2) Take V1 volume of the first gas from the secondary gas source (3): The first manual valve (421) is opened, balanced for 1 to 5 minutes, and the first manual valve (421) is closed, so that a volume of V1 of the first gas is stored between the first manual valve (421) and the second manual valve (422); Take a volume V2 of the second gas from the main gas source (2): Open the first pneumatic valve (411), balance for 1 to 5 minutes, close the first pneumatic valve (411), and store a volume V2 of the second gas between the first pneumatic valve (411) and the second pneumatic valve (412); 3) Mixing the first gas and the second gas: The connection between the vacuum pump group (1) and the system pipeline is blocked, the second pneumatic valve (412) and the second manual valve (422) are opened, and the mixed gas is allowed to balance for 5 to 20 minutes, and then enters the mixer (44) for storage; 4) Dispense V3 volume of mixed gas: The third pneumatic valve (431) is opened, and the mixture is balanced for 1 to 5 minutes. The third pneumatic valve (431) is closed, and a volume V3 of the mixed gas is stored between the third pneumatic valve (431) and the fourth pneumatic valve (432); 5) Open the fourth pneumatic valve (432), and the mixed gas with a volume of V3 is input into the storage device (5); After step 4), the fourth pneumatic valve (432), the fifth pneumatic valve (511), the sixth pneumatic valve (512), the seventh pneumatic valve (542), the eighth pneumatic valve (543), the ninth pneumatic valve (552) and the tenth pneumatic valve (553) are opened. After balancing for 5 to 20 minutes, the above pneumatic valves are closed, and the mixed gas enters the storage (52), each first storage (544) and each second storage (554) respectively; V1=15~50mL, V2=0.05~1mL, V3=0.05~1mL; The second gas is 3 He gas, the first gas is 4 Cheer.

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