Closed natural gas pipeline power generation and filtering device

Abstract

The invention discloses a closed natural gas pipeline power generation and filtering device which is good in sealing performance, simple in structure, high in power generation efficiency and capable of separating liquid and solid impurities in raw material gas during power generation and outputting electric energy to the outside safely and effectively. The device comprises a power generating system, a wiring system, a bypass system and a sewage discharging system, wherein the power generating system and the sewage discharging system are connected to a natural gas pipeline in series, and the power generating system is used for converting pressure energy of natural gas into mechanical energy and then converting the mechanical energy into electric energy; the wiring system is electrically connected with the power generating system and is used for outputting electric energy generated by the power generating system; the sewage discharging system is positioned at the upstream end of the power generating system and is used for separating impurities carried by the natural gas; the bypass system is connected with the sewage discharging system in parallel and used for guaranteeing normal work of the power generatiing system when the sewage discharging system is shut down.

Description

technical field [0001] The invention relates to the technical field, in particular to a closed natural gas pipeline power generation and filtering device. Background technique [0002] Raw gas extracted from natural gas wells generally has high pressure and contains a certain amount of water, hydrogen sulfide, carbon dioxide and some solid impurities. There are clear regulations on the pressure of natural gas used in people's production and life. Therefore, in the current industrial process of natural gas extraction and transportation, natural gas is usually treated with throttling and pressure reduction for users to use, which will cause a lot of redundant pressure energy to be wasted. In the process of throttling and depressurization, the temperature of the throttling and depressurizing position will drop sharply due to the sharp drop of natural gas pressure, which will easily cause ice blockage, reduce the flow capacity of the pipeline, cause solid impurities to accumulat...

AI Technical Summary

Problems solved by technology

[0006] 3. The sealing of natural gas pipeline power generation equipment is very important. Once leakage occurs, it may cause safety accidents such as natural gas pipeline explosion;

[0007] 4. The raw gas extracted from the natural gas well contains a certain amount of water, hydrogen sulfide, carbon dioxide and some solid impurities. The high-pressure natural gas passing through the natural gas pipeline power generation device is very easy to cause erosion, corrosion and other damage to it;

[0008] 5 During the throttling and depressurization process of natural gas, the temperature at the throttling and depressurizing position will drop suddenly, which will easily cause ice blockage, reduce the flow capacity of the pipeline or cause physical damage to the natural gas pipeline power generation device

[0009] In recent years, some natural gas pipeline power generation devices have been disclosed in China. For example, the patent number "CN201610323265.4" announced a magnetically driven natural gas pipeline generator. Guarantee power generation efficiency; no separation measures are taken for impurities contained in natural gas, which may easily cause impeller erosion and pipeline blockage

Patent No. CN01228655.9 discloses a fully enclosed natural gas pipeline generator. This device does not consider the output of electricity from the completely enclosed pipeline to the outside. The impeller of this device is easily eroded by high-speed flowing solid impurities

Patent No. CN201611067678.7 discloses a skid-mounted natural gas pipeline generator. This device also has the problem that impurities contained in natural gas accumulate to block the pipeline or cause physical damage.

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