System for configuring standard gas and method for configuring standard gas

A system for configuring standard gas, comprising a vacuum pump group (1),

• a main gas source (2), an auxiliary gas source (3), a mixing device (4) and a storage device (5) connected through pipelines;
• the vacuum pump group (1) is configured to keep the system in a vacuum state;
• wherein the mixing device (4) comprises a main input pipeline (41), an auxiliary input pipeline (42), an output pipeline (43) and a mixer (44);
• wherein the input end of the main input pipeline (41) is communicated with the main gas source (2), the output end is communicated with the mixer (44), and
• a first pneumatic valve (411) and a second pneumatic valve (412) are arranged on the main input pipeline (41) at intervals;
• wherein the input end of the auxiliary input pipeline (42) is communicated with the auxiliary gas source (3),
• the output end is communicated with the mixer (44), and
• the auxiliary input pipeline (42) is provided with a first manual valve (421) and a second manual valve (422) at intervals;
• wherein the input end of the output pipeline (43) is communicated with the mixer (44), and
• the output end is communicated with the storage device (5);
• wherein the output pipeline (43) is provided with a third pneumatic valve (431) and a fourth pneumatic valve (432) at intervals;
• wherein the storage device (5) comprises a storage pipeline (51) and a storage unit (52);
• wherein one end of the storage pipeline (51) is communicated with the output pipeline (43), and the other end is communicated with the storage unit (52);
• and
• a fifth pneumatic valve (511) and a sixth pneumatic valve (512) are arranged on the storage pipeline (51) at intervals;
• wherein the storage device (5) comprises a second cross (53), a first main branch pipeline (54) and a second main branch pipeline (55);
• wherein the storage pipeline (51) comprises a front storage pipeline and a rear storage pipeline, the input end of the front storage pipeline is communicated with the output pipeline (43), and the rear storage pipeline is communicated with the storage unit (52), and the fifth pneumatic valve (511) and the sixth pneumatic valve (512) are arranged on the rear storage pipeline at intervals;
• wherein four ports of the second cross (53) are respectively communicated with 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 through an arrangement of the first main branch pipeline (54) and the second main branch pipeline (55), the system adapts to split charging requirements of different volumes and adapts to different numbers of split charging requirements;
• wherein 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);
• wherein the vacuum pump group is configured to maintain the vacuum degree of the system at (0.1-6)×10−6 pascals (Pa);
• wherein the mixing device (4) comprises a first cross (45), a general input pipeline (46) and a first vacuum pipeline (47);
• wherein four ports of the first cross (45) are respectively communicated with the output end of the main input pipeline (41), the output end of the auxiliary input pipeline (42), the input end of the general input pipeline (46) and the input end of the first vacuum pipeline (47), and the output end of the general input pipeline (46) is communicated with the mixer (44), and the output end of the first vacuum pipeline (47) is communicated with the vacuum pump group (1);
• wherein the output end of the general input pipeline (46) is provided with a fourth manual valve (461);
• wherein a storage volume between the first pneumatic valve (411) and the second pneumatic valve (412) is 0.05-1 milliliter (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 the pipeline connecting the first pneumatic valve (411) and the second pneumatic valve (412);
• wherein a storage volume between the first manual valve (421) and the second manual valve (422) is 15-50 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 the pipeline connecting the first manual valve (421) and the second manual valve (422);
• wherein a storage volume between the third pneumatic valve (431) and the fourth pneumatic valve (432) is 0.05-1 mL,
• wherein 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);
• wherein the first vacuum pipeline (47) is provided with a third manual valve (471);
• wherein the storage device (5) further comprises
• a plurality of first secondary branch pipelines (541) arranged in parallel and respectively communicated with the first main branch pipeline (54);
• a plurality of second secondary branch pipelines (551) arranged in parallel and respectively communicated with the second main branch pipeline (55);
• wherein each first secondary branch pipeline (541) is respectively provided with a seventh pneumatic valve (542) and an eighth pneumatic valve (543) arranged at intervals, and each first secondary branch pipeline (541) is respectively connected with a first storage unit (544);
• wherein each second secondary branch pipeline (551) is respectively provided with a ninth pneumatic valve (552) and a tenth pneumatic valve (553) arranged at intervals, and each second secondary branch pipeline (551) is respectively connected with a second storage unit (554);
• the storage device (5) comprises a second vacuum pipeline (56), the second vacuum pipeline (56) is communicated with the front storage pipeline, and the second vacuum pipeline (56) is provided with a fifth manual valve (561);
• wherein the material of each pipeline is 316L stainless steel;
• wherein the manual valves are made of metal;
• wherein the main gas source (2) is a 3He gas tank, and the auxiliary gas source (3) is a 4He gas tank;
• wherein the system is further configured to form a closed system by closing the fourth manual valve (461), the third pneumatic valve (431) and the fourth pneumatic valve (432), when the mixed gas is stored in the mixer (44);
• the fifth pneumatic valve (511) and the sixth pneumatic valve (512) are configured to close and enable measurement of gas stored in the storage unit (52), and
• the system is configured to perform quantitative sampling by using the quantitative volume between the fifth pneumatic valve (511) and the sixth pneumatic valve (512).