Device for generating power by using pressure difference energy of natural gas delivery pipeline

A technology for transporting pipelines and natural gas, applied to machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve problems such as energy waste and achieve full utilization

Inactive Publication Date: 2013-01-30
CHENGDU HOT NEW ENERGY TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortage of energy waste caused by pressure-reducing valves used in existing natural gas transmission systems, the technical problem to be solved by the present invention is to provide a natural gas transmission pipeline pressure differential system that can generate electricity by using pressure differences when natural gas is transported through pressure regulation. device that generates electricity

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  • Device for generating power by using pressure difference energy of natural gas delivery pipeline
  • Device for generating power by using pressure difference energy of natural gas delivery pipeline

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the existing natural gas delivery system is first filtered and separated by the filter separator 8, and then the temperature is raised by the heating furnace 3, and then the pressure is lowered by the pressure regulating valve. Using the pressure regulating valve 4 to step down the pressure does not make full use of the pressure difference energy between the upstream and downstream pipelines, resulting in waste of energy.

[0015] Such as figure 2 As shown, the device of the present invention that utilizes the pressure difference of the natural gas transmission pipeline to generate electricity, the device is arranged between the upstream pipeline 1 and the downstream pipeline 2 where there is a pressure difference in the natural gas transmission system, wherein the air pressure in the upstream pipeline 1 is greater than that of the d...

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Abstract

The invention discloses a device for generating power by using pressure difference energy during pressure-adjustable delivery of natural gas and particularly relates to a device for generating power by using pressure difference energy of a natural gas delivery pipeline. The device is arranged at a part where the pressure difference exists between an upstream pipeline and a downstream pipeline in the natural gas delivery pipeline, wherein the atmospheric pressure in the upstream pipeline is greater than that of the downstream pipeline; a filtering separator is connected between the upstream pipeline and the downstream pipeline; a heating device and an expansion generator are arranged between the filtering separator and the downstream pipeline; the heating device is an electric heating device or waste heat exchange device; and a gas-liquid separating device is arranged at the rear part of the expansion generator. According to the device disclosed by the invention, the pressure adjusting function is realized by adopting the expansion generator instead of a pressure adjusting valve; the work doing to the outside can be realized while the pressure is adjusted; the pressure difference energy is converted into electric energy or cold energy for outputting and liquid light-hydrocarbon can be obtained and the full utilization of resources is realized; and natural gas subjected to pressure and temperature drop is heated by using electric energy or waste heat energy, and thus better energy-saving and environment-friendly performances are obtained.

Description

technical field [0001] The invention relates to an energy conversion and utilization device, in particular to a device for generating electricity by utilizing the pressure difference energy of a natural gas transmission pipeline. Background technique [0002] As an efficient and clean energy source, natural gas has been widely used in recent years. Before the main gas pipeline of natural gas enters the city gate station or gas-fired power plant, it can only be used after the natural gas is decompressed according to different requirements. The delivery pressure of natural gas is 6-8MPa, and the pressure of industrial gas is about 0.3-3MPa. Before entering natural gas users, it is necessary to use pressure regulating equipment to adjust the pressure. Before the pressure regulation of the original natural gas transmission system, it is generally filtered and separated first, then the temperature is raised through the heating furnace, and then the pressure is reduced through th...

Claims

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Application Information

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IPC IPC(8): F03G7/04
Inventor 李炎井鸿勇肖峰黄浩
Owner CHENGDU HOT NEW ENERGY TECH
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