Natural gas pressure energy utilization system

Abstract

The invention provides a natural gas pressure energy utilization system which is low in equipment manufacturing cost, high in energy conversion efficiency and suitable for natural gas pressure energy utilization, and relates to the technical field of pressure energy utilization. The natural gas pressure energy utilization system comprises a first pressure energy conversion unit, a second pressure energy conversion unit, a hydraulic transmission device and a power generator, wherein the first pressure energy conversion unit and the second pressure energy conversion unit each comprise a pressure conversion assembly; the pressure conversion assembly comprises an air inlet tube, an exhaust tube and at least one energy conversion device; the energy conversion device comprises a shell and a movable sealing structure, the movable sealing structure divides an inner cavity of the shell into a first medium cavity and a second medium cavity, an air inlet control valve is arranged on the air inlet tube, an exhaust control valve is arranged on the exhaust tube, and one end of the air inlet tube and one end of the exhaust tube are both communicated with the second medium cavity. The system is simple in structure, low in manufacturing cost, convenient to maintain and high in power generation benefit.

Description

technical field [0001] The invention relates to the technical field of pressure energy utilization, in particular to a natural gas pressure energy utilization system. Background technique [0002] In the process of natural gas collection, because the traditional collection process is to directly reduce the pressure of the underground air pressure through pressure reduction and throttling, and then enter the long-distance pipeline, the pressure of the high-pressure natural gas at the wellhead needs to be reduced first. In addition, in the gathering and transportation of natural gas, in order to overcome the resistance along the pipeline, the natural gas upstream of the pipeline needs to be transported at high pressure, but most of the gas-consuming equipment needs to operate at a lower pressure, so it is necessary to reduce the pressure of the high-pressure natural gas transported by the pipeline to After a certain level, it is supplied to gas equipment. At present, high-pre...

AI Technical Summary

Problems solved by technology

When the device is used for natural gas wellhead pressure energy utilization, due to the contact between gas and liquid, when high-pressure natural gas is passed into the pressure-resistant water storage device, the gas will impact the liquid, the liquid will be atomized and foamed, and the atomized liquid will be mixed into the natural gas , it is inconvenient for natural gas to be reused, and air bubbles will also be mixed in the liquid, and cavitation will also appear during the flow process

Therefore, the above-mentioned device is not suitable for the utilization of natural gas pressure energy

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