Gas flow pressure regulation system for natural gas conveying

Abstract

The invention provides a gas flow pressure regulation system for natural gas conveying. The gas flow pressure regulation system comprises a gas flow inlet pipeline connected with a natural gas conveying pipeline, pressure regulation pipelines capable of carrying out pressure regulation on natural gases, and a gas flow outlet pipeline capable of conveying the natural gases into a medium-pressure pipeline network, wherein the gas flow inlet pipeline is connected with multiple groups of pressure regulation pipelines in parallel through a gas division feeding cylinder; after the natural gases aregasified, the gasified natural gases enter the gas division feeding cylinder through the gas flow inlet pipeline; the gas division feeding cylinder independently conveys the natural gases into a plurality of pressure regulation pipelines; when parts on one group of pressure regulation pipelines are repaired, other groups can conduct pressure regulation work, pressure regulation efficiency is improved, and pressure regulation stability is guaranteed; through pressure regulation by the pressure regulation pipelines and collection by a gas division discharging cylinder, the natural gases are conveyed to the gas flow outlet pipeline; the gas flow inlet pipeline is provided with a second safety cut-off valve; each pressure regulation pipeline is provided with a first safety cut-off valve; and two ends of a pressure regulator are provided with two groups of safety cut-off valves to guarantee stability for enabling the gas flow to pass and cutting off the gas flow, and a downstream pipeline can be cut off in time when the downstream pipe is subjected to overpressure.

Description

technical field [0001] The invention relates to the technical field of natural gas, in particular to a gas flow pressure regulating system for transporting natural gas. Background technique [0002] In the natural gas transmission system, pressure control is one of the key technologies. In addition to the correct configuration of pressure control equipment, the pressure regulation system must also ensure that when the pressure regulation equipment fails, the downstream pipeline will not overpressure and can be cut off safely. The configuration of the pressure regulating system is diverse, and the setting points and switching methods of the valves in different configurations are also different. When the existing pressure regulating equipment fails, the continuity of the gas supply will be affected, and the downstream overpressure cannot be promptly corrected. Adjustment. In order to ensure that downstream users provide natural gas with stable pressure, safety and reliability...

AI Technical Summary

Problems solved by technology

The configuration of the pressure regulating system is diverse, and the setting points and switching methods of the valves in different configurations are also different. When the existing pressure regulating equipment fails, the continuity of the gas supply will be affected, and the downstream overpressure cannot be made in time. Adjustment

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