A device and method for preparing multi-bottle mixed gas
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A technology of mixed gas and gas cylinders, which is applied in the direction of mixing methods, mixers, chemical instruments and methods, etc., can solve the problems of not being suitable for preparing multiple bottles of molecular weight, and achieve the effects of saving raw material gas, reducing errors, and achieving obvious effects
Active Publication Date: 2017-03-22
PERIC SPECIAL GASES CO LTD
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However, this device is not suitable for preparing multiple bottles of low-concentration mixed gas with small molecular weight and filled with large-volume steel cylinders.
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Embodiment 1
[0040] Such as figure 1 As shown, a device for preparing multi-bottle mixed gas includes dilution gas raw material gas cylinder 1-2, component gas raw material gas cylinder 1-1, weighing device, pressure reducing valve 3, first ball valve 4-1, second Two ball valves 4-2, high vacuum baffle valve 5, vacuum pressure gauge 6, vacuum pump 7, venting control valve 8, venting pipeline 9, raw material gas main pipeline 10, precision pressure gauge 11, product gas busbar 12, needle Valve 13, product gas cylinder 14; product gas manifold 12 includes multiple gas pipelines, and the number of needle valves 13 and product gas cylinders 14 is equal to the number of gas pipelines;
[0041] Its connection relationship is as follows:
[0042] Dilute gas raw material gas cylinders 1-2 and product gas manifold 12 are respectively connected to the two ends of the raw material gas main pipeline 10; component gas raw material gas cylinders 1-1 are connected to the raw material gas main pipeline 1...
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Abstract
The invention discloses a device and method for preparing multi-bottle mixed gas, belonging to the field of mixed gas distribution. The device includes dilution gas raw material gas cylinders, component gas raw material gas cylinders, weighing devices, pressure reducing valves, first ball valves, second ball valves, high vacuum baffle valves, vacuum pressure gauges, vacuum pumps, venting control valves, exhaust Empty pipelines, raw material gas main pipelines, precision pressure gauges, product gas manifolds, needle valves, and product gas cylinders; the product gas manifold contains multiple gas pipelines, and the number of needle valves and product gas cylinders is the same as the number of gas pipelines. The quantity is equal. The steps of the method are as follows: Step 1, pipeline connection; Step 2, pipeline evacuation; Step 3, pipeline gas replacement; Step 4, mixed gas preparation; Step 5, pipeline evacuation. The low-concentration gas is prepared by using the device and method of the invention, which reduces the weighing error, improves the gas distribution accuracy, has fast gas distribution speed, is suitable for mass production, and saves the gas distribution cost. And the device is simple, and the method is easy to operate.
Description
technical field [0001] The invention relates to a device and method for preparing multi-bottles of mixed gas, in particular to simultaneous preparation and filling of multi-bottles of mixed gas, and belongs to the field of mixed gas distribution. Background technique [0002] Mixed gases have been widely used in scientific research, environmental protection, industrial production and product inspection, and the market demand is increasing. There are two types of mixed gas preparation methods: static gas distribution method and dynamic gas distribution method. Static gas distribution methods include: weighing method, volume method and pressure ratio method. The equipment of the static gas distribution method is simple and easy to operate. However, the traditional static gas distribution method can only fill one bottle of gas at a time, and cannot continuously distribute gas, making it difficult to carry out mass production; moreover, for low-concentration gas mixtures with ...
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