Vortex tube induced shock wave hydrate inhibition device

Abstract

The invention relates to a vortex tube induced shock wave hydrate inhibition device. The vortex tube induced shock wave hydrate inhibition device mainly comprises a gas inlet pipe, a vortex tube, a return pipe, a hot end outlet pipe, a cold end outlet pipe, a heat pipe type heat exchanger, an air blower and a mixer; high-pressure natural gas extracted from a gas well enters the vortex tube and generates strong rotational flow motion in a vortex chamber, so that energy separation is triggered, and cold and hot double fluids are formed; hot fluid of a hot end pipe is continuously accelerated tobecome supersonic fluid by passing a contracting gradually-widened pipe section, then an expansion pipe section generates shock waves, and the temperature and the pressure are increased; and part of the high-temperature and high-pressure fluid flows back to a cold end pipe and exchanges heat with cold fluid, so that ice blockage of the cold end is prevented. The device combines a shock wave heating principle and a vortex tube energy separation principle, the high-pressure natural gas is taken as a working power source, and no additional heating device is arranged, so that economization and environmental protection, and safety and reliability are achieved.

Description

Technical field: [0001] The invention discloses a shock wave hydrate suppressing device induced by a vortex tube, in particular to a device for preventing freezing blockage when high-pressure natural gas is throttling. Background technique: [0002] During the production of natural gas from the wellhead, because the stratum contains water, the natural gas produced often has a certain water content. When the water-containing natural gas flows through the wellhead throttle valve of the gas well, a large temperature drop will occur due to the Joule-Thomson effect. When the conditions for hydrate formation are reached, hydrates will be formed in the pipeline, which will cause problems such as pipeline blockage and affect production. Therefore, methods such as heating before throttling are usually used to increase the temperature of natural gas to avoid the formation of natural gas hydrate. [0003] At present, the traditional natural gas throttling device is composed of a throt...

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Problems solved by technology

[0006] Most of the existing vortex tubes focus on the cooling effect. When the vortex tube is used for throttling and reducing pressure at the wellhead of the natural gas industry, the excessive temperature drop inside the vortex tube will condense part of the water vapor in the natural gas, resulting in freezing of the cold end of the vortex tube, and The heating effect of the hot end of the vortex tube is not good, which is an important factor limiting the application of the vortex tube in the field of natural gas wellhead throttling

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