Small driving water cooling and circulating device for water jet air ejector of condensing steam turbine

Abstract

The invention provides a gear type cantilever two-stage water vapor compressor. The compressor comprises a main shaft, impellers and a gear box. The main shaft and a rotating shaft of the gear box are subjected to integrated molding on one side of the gear box; the main shaft is sleeved with two impellers in series; a box body is arranged on the other side of the gear box; and the box body and the impellers form a compressed cavity. According to the gear type cantilever two-stage water vapor compressor, the two-stage impellers are arranged on the main shaft in series and integrated with the gear box, the structure is compact, various connecting mechanisms of a transmission portion are omitted, and the efficiency is improved; and the range of using temperature rise is wide, the methods of adjusting the temperature rise are various and not limited to rotating speed adjusting, the degree of relative standardization is high, the saturated temperature rise at middle and small flow can reach 20 DEG C-30 DEG C, and the temperature rise is difficult for an existing domestic one-stage water vapor compressor to reach.

Description

technical field [0001] The invention belongs to the technical field of equipment manufacturing and processing, and more specifically relates to a gear-type cantilever two-stage steam compressor. Background technique [0002] Centrifugal compressor is a general-purpose machine that increases gas pressure and is used in many sectors of the national economy. As a new heat recycling device, the water vapor compressor increases the saturation temperature rise by increasing the pressure of low-pressure steam, and the temperature of the water vapor is stable, which can effectively improve the quality of the product, has high efficiency, and requires only a small amount of electric energy. A large amount of low-pressure steam internal energy can be reused, the efficiency is very high, energy demand is reduced, and circular economic operation of energy and materials is realized at the same time. At present, domestic high-temperature rise applications with medium and small flows are ...

AI Technical Summary

Problems solved by technology

However, for a single-stage high speed, the higher the speed, the higher the requirements for the equipment, especially the gearbox, and it is difficult to achieve standardization, the reliability and standardization are not high, and the cost increases a lot with the increase of the speed, seriously restricts the development of water vapor compressors

For the Roots blower, the efficiency is low, the reliability is not high, the noise is large, and the operation and maintenance costs are high.

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