Natural gas pressure difference energy utilization intelligent peak regulation system and peak regulation method thereof

By designing a natural gas pressure differential energy use intelligent peak regulating system and using expansion pressure regulation and heat exchange devices, the pressure energy of the natural gas pipeline network is converted into liquefied natural gas, which solves the problem of wasting pressure differential kinetic energy in traditional pressure regulation methods, and realizes intelligent peak regulating and efficient energy utilization of natural gas gas.

CN113757565BActive Publication Date: 2025-03-25THE 711TH RES INST OF CHINA STATE SHIPBUILDING CORP
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Patent Information

Application Number
CN202110932177.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-08-13
Publication Date
2025-03-25
Estimated Expiration
2041-08-13

AI Technical Summary

Technical Problem

The prior art is difficult to effectively utilize the cold energy in the pressure energy recovery process of natural gas pipeline networks, and the traditional pressure regulation method wastes a lot of pressure differential kinetic energy.

Method used

An intelligent peak regulating system that can utilize the pressure difference of natural gas is designed, including a natural gas expansion and pressure regulating device, a heat exchange device, a switching device, a LNG regasification device, a pressure sensor and a control device. The system expands high-pressure natural gas into low-pressure natural gas through an expansion and pressure regulating device, and heat exchange device to heat or condense the expanded natural gas to realize the storage and regasification of liquefied natural gas to meet the gas needs.

Benefits of technology

It realizes intelligent peak regulating of natural gas gas, effectively utilizes the cold energy in the pressure energy recovery process of natural gas pipeline network, improves energy utilization efficiency, and reduces energy waste.

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Abstract

A natural gas pressure difference energy-utilizing intelligent peak-shaving system and a peak-shaving method thereof. The intelligent peak-shaving system comprises a natural gas expansion and pressure-regulating device, a heat exchange device, a switching device, an LNG regasification device, a pressure sensor and a control device. The first and second heat exchange branches of the heat exchange device are respectively used to heat and raise the temperature of the natural gas output by the natural gas expansion and pressure-regulating device and then output it to a natural gas low-pressure pipeline and condense it into liquefied natural gas. The first, second and third interfaces of the switching device are respectively connected to the inlets of the first and second heat exchange branches and the outlet of the natural gas expansion and pressure-regulating device. The inlet of the LNG regasification device is connected to the outlet of the second heat exchange branch, and the outlet is connected to the natural gas low-pressure pipeline. The control device is used to control the operation of the natural gas expansion and pressure-regulating device, the switching device and the LNG regasification device. The present invention can realize intelligent peak-shaving of natural gas consumption and can effectively utilize the cold energy in the process of recovering the pressure energy of the natural gas pipeline network.
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