Large-flow low-pressure online gas supply system

A technology of gas supply system and large flow, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., which can solve the problems of equipment loss, lifespan and decline, and achieve large gasification capacity, low pressure, and gas supply pressure. low effect

Pending Publication Date: 2021-08-06
中国人民解放军63796部队
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  • Abstract
  • Description
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is how to provide a large-flow low-pressure online gas supply system to

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  • Large-flow low-pressure online gas supply system

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Embodiment Construction

[0023] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] In order to avoid equipment loss and lifespan reduction caused by intermittent shutdown of industrial nitrogen production equipment, an online gasification system is designed in the pipeline to directly produce nitrogen at room temperature and low pressure through liquid nitrogen, eliminating the need for pressure adjustment equipment and improving economic efficiency.

[0025] The online gas supply system of the present invention includes liquid nitrogen output source, 1# vacuum shut-off valve, filter, 3# vacuum shut-off valve, 4# vacuum shut-off valve, P1 pressure sensor, and 7# vacuum shut-off valve, vaporizer, T2 Gasification channel composed of temperature sensor and P2 pressure sensor, gasification channel c...

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Abstract

The invention relates to a high-flow low-pressure online gas supply system, and belongs to the field of industrial nitrogen production. The online gas supply system comprises a liquid nitrogen output source, a first vacuum stop valve, a filter, a third vacuum stop valve and an online gas supply structure, and the online gas supply structure comprises a fourth vacuum stop valve, a P1 pressure sensor, a gasification channel composed of a seventh vacuum stop valve, a gasifier, a T2 temperature sensor and a P2 pressure sensor, a gasification channel composed of a sixth vacuum stop valve, a gasifier, a T3 temperature sensor and a P3 pressure sensor, a P4 pressure sensor, a flowmeter, a ninth vacuum stop valve, an external gas source port and a replacement target. The online gas supply system is large in gasification amount, low in pressure and high in temperature, sufficient heat exchange between nitrogen and air is guaranteed, adjustment and control are convenient, and safety is higher.

Description

technical field [0001] The invention belongs to the technical field of industrial nitrogen production, and in particular relates to a large-flow low-pressure online gas supply system. Background technique [0002] Nitrogen is a non-toxic, non-polluting, easy-to-obtain, and cheap gas. At present, the methods for producing nitrogen in industry are mainly divided into molecular sieve air nitrogen production, membrane air separation nitrogen production and cryogenic air separation nitrogen production. The first two are The first method produces a small amount of nitrogen, which is mainly used for medium and small nitrogen users. The third method simultaneously produces a large amount of nitrogen, which is suitable for large-scale industrial nitrogen production. [0003] Due to the inactive chemical properties of nitrogen, it is difficult to react with other substances at room temperature, so it is often used for pipeline pressure maintenance and blow-off replacement to prevent w...

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Application Information

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IPC IPC(8): F17D1/02F17D1/08F17D3/01F17D3/18F17D5/00
CPCF17D1/02F17D1/08F17D3/01F17D3/18F17D5/005
Inventor 张青钟文安郑艳孙一龙俞少行陈虹高旭张继
Owner 中国人民解放军63796部队
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