Airtight chamber and method for balancing air pressure inside airtight chamber
A closed chamber and gas technology, applied in the direction of sampling devices, etc., can solve the problems of incomplete vacuuming, poor sealing performance, poor corrosion resistance, etc., and achieve the effects of good air tightness, accurate test data and good test reproducibility
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[0018] Example 1
[0019] Such as figure 1 As shown, a closed chamber with balanced air pressure includes a vacuum pump 1, a gas collection bag a2, a gas collection bag b3, a three-way pneumatic rotary valve a4, and a three-way pneumatic rotary valve b5. The gas collection bag a2 is arranged in the closed chamber 6. Externally, the air inlet and outlet of the gas collection bag a2 are connected to the port a41 of the three-way pneumatic rotary valve a4, the port b42 of the three-way pneumatic rotary valve a4 is directly connected to the inside of the closed chamber 6, and the air outlet of the three-way pneumatic rotary valve a4 c43 is connected to the vacuum pump 1; the gas collection bag b3 is set on the suspended ceiling in the closed chamber 6, and the gas inlet and outlet ports of the gas collection bag b3 are connected to the port d51 of the three-way pneumatic rotary valve b5. The port e52 of the rotary valve b5 is directly connected to the atmosphere outside the closed c...
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