A pcl compressor model stage and its design method

Abstract

The invention belongs to an efficient model stage for a centrifugal compressor and specifically relates to a PCL compressor model stage and a design method thereof. The PCL compressor model stage is applicable to the modeling design of PCL compressor products for long-distance pipeline devices. The model stage comprises an impeller, a vaneless diffuser, a curving channel and a backflow device, the impeller is located at the position of an inlet of the model stage, the vaneless diffuser is arranged at the position of an outlet of the impeller, the backflow device is located at the position of an outlet of the model stage, and the vaneless diffuser and the backflow device are communicated with each other through the curving channel. According to the model stage, the machine mach number Mu2 is equal to 0.45, the flow coefficient fai 1 is equal to 0.085, the energy head coefficient tau is equal to 0.52, and the polytropic efficiency eta pol is from 0.87 to 0.88. By means of the efficient model stage, the PCL centrifugal compressor is provided with high operation efficiencies and large working condition ranges.

Description

Technical field [0001] The invention belongs to a high-efficiency model stage for centrifugal compressors, specifically a PCL compressor model stage and a design method thereof, and is suitable for the modular design of PCL compressor products for long-distance pipeline installations. Background technique [0002] In the development process of the centrifugal compressor, the design of the model stage is very important, and the development of new products depends on the corresponding model stage. [0003] The western part of my country is rich in natural gas resources. The “West-East Gas Pipeline” project to transport natural gas resources from the west to the middle and east is a major project related to my country’s modernization and people’s livelihood. Station can be realized. The core equipment of the pressurizing station is the pipeline compressor (PCL compressor). The energy consumption of hundreds of compressors is quite huge, so improving the efficiency of pipeline compres...

AI Technical Summary

Problems solved by technology

[0004] Due to various reasons such as unit efficiency, variable frequency motor, and design capability of gas turbine units, the compressors in the first phase of the West-to-East Gas Pipeline Project mainly rely on imports, which are not only expensive, but also rely on foreign countries to inevitably bring about major problems such as economic security.

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