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Natural gas pressure regulating and power generation integrated device and method

A technology for natural gas and pressure regulation, which is applied in steam engine installations, gas/liquid distribution and storage, machines/engines, etc. It can solve problems such as scattered layout of pressure regulation stations and difficulty in utilizing natural gas residual pressure, and achieve the effect of reducing carbon emissions

Active Publication Date: 2018-01-12
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the multi-stage pressure regulation of natural gas, the distribution of pressure regulation stations is scattered, which brings difficulties to the utilization of natural gas residual pressure

Method used

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  • Natural gas pressure regulating and power generation integrated device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The natural gas from the high-pressure pipeline network enters the natural gas gate station and is divided into two paths after being heated by the heating system 11. One path is connected to the expander 21 and the generator 22 to drive the expansion generator to generate electricity, and the pressure energy of natural gas can be recovered; asynchronous expansion generates electricity The electricity sent by the machine is supplied to the power grid after being frequency-converted by the four-quadrant frequency converter 31 of the flow control system;

[0043] The other way is the pressure regulating bypass, where the natural gas is throttled and depressurized by the pressure regulating valve 41 arranged therein, and the pressure regulating valve 41 obtains the pressure signal from the pressure sensor 42 arranged thereafter; at the same time, the temperature sensor 43 arranged on the pressure regulating bypass And the pressure sensor 42, its signal is also transmitted t...

Embodiment 2

[0049] Similar to Embodiment 1, except that the set value is the pressure of the downstream pipe network.

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Abstract

The invention relates to a natural gas pressure regulating and power generation integrated device and method. The device comprises a heating system, an expanding power generation system, a flow control system and a pressure regulating bypass; the heating system preheats high pressure natural gas; the flow control system is in communication with the pressure regulating bypass and the expanding power generation system, pressure and temperature signals on the pressure regulating bypass are obtained, and the expanding power generation system is controlled to run; the expanding power generation system generates power through an asynchronous generator; and the pressure regulating bypass is provided with a pressure regulating valve which is opened when the expanding power generation system runs in a full-load manner and the downstream pressure is still too low. According to the natural gas pressure regulating and power generation integrated device and method, in the high pressure natural gaspressure regulating process, the pressure energy is recovered, the generator is driven to generate power to supply power to a power grid, through close cooperation of the expanding power generation system, the flow control system and the pressure regulating bypass, the pressure and flow of natural gas are adjusted to the set level.

Description

technical field [0001] The invention relates to a recovery power generation and pressure regulation device utilizing natural gas pressure energy, in particular to an integrated device and method for natural gas pressure regulation and power generation. Background technique [0002] The main function of the natural gas gate station is to decompress the high-pressure and sub-high pressure pipeline network gas to the pressure of the downstream pipeline network, odorize and send it to the urban medium-pressure gas pipeline network. The huge excess pressure and energy resources contained in the natural gas pipeline network can be widely used in power generation, pressure regulation and storage, refrigeration, LNG production and other purposes. However, due to the multi-stage pressure regulation of natural gas, the distribution of pressure regulation stations is scattered, which brings difficulties to the utilization of natural gas residual pressure. [0003] The pressure of natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/02F17D3/01F01K7/04
Inventor 寇伟伟徐化周刘恒韩金潮王培薛伟鞠佳静
Owner XINDI ENERGY ENG TECH
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