Double-side pressure pulsation buffer device for Roots vapor compressor

Abstract

The invention provides a double-side pressure pulsation buffer device of a Roots steam compressor and belongs to the technical field of mechanical steam compression. The double-side pressure pulsationbuffer device comprises a buffer chamber, a left inlet flange, a right inlet flange, a partition plate, a steam outlet flange, a discharging hole and the like. Two side steam outlets which are originally formed in the Roots steam compressor are utilized to form steam outlet channels which are symmetrical at the two sides; the buffer chamber is combined, and the outlet space of compressed steam isgreatly increased; and the problems of vibration and noise caused by pressure pulsation are effectively solved. The design that the buffer chamber is combined with the partition plate is adopted, separation and purification of waste steam are achieved; the waste steam can be reutilized conveniently; and subsequent pipeline and equipment corrosion is reduced. By means of the double-side pressure pulsation buffer device, the original structure of the Roots steam compressor does not need to be changed; the double-side pressure pulsation buffer device has the advantages of being simple in structure, convenient to maintain, low in cost, not likely to be damaged and the like; the double-side pressure pulsation buffer device can be widely applied to the occasion for recycling waste heat of wastesteam through steam compressors in relative industries with the evaporation and concentration production technology; and the energy conservation and environment protection effects are effectively improved.

Description

Technical field [0001] The invention relates to a double-sided pressure pulsation buffer device of a roots vapor compressor, in particular to a buffer device that is connected from both sides of the roots vapor compressor and can relieve the pulsating pressure. It belongs to the technical field of mechanical vapor compression. Background technique [0002] Roots vapor compressors are generally used in the waste heat recovery system to compress the secondary waste steam and increase the temperature and pressure of the secondary waste steam. It is a key equipment for the recovery and utilization of waste steam. Roots vapor compressors generally adopt a three-blade or two-blade structure. The blades rotate at a constant speed. When the blades rotate for vapor compression, the speed of the compressed vapor discharge varies periodically due to the different positions of the blades. It will cause the outlet steam pressure to fluctuate periodically, which is also one of the main reason...

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Problems solved by technology

[0004] The object of the present invention is to provide a double-sided pressure pulsation buffer device for Roots steam compressors, which is used to solve the problems of high vibration and noise caused by pressure pulsation and unilateral asymmetric steam outlet in existing Roots steam compressors. And realize the separation and purification of compressed mixed steam, improve the quality of compressed waste steam, and be more conducive to the recovery and utilization of waste steam

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