A centrifugal compressor vane diffuser adjustment mechanism and its control method

Abstract

The invention discloses a blade diffuser adjustment mechanism of a centrifugal compressor and a control method thereof, which are suitable for the testing field of a centrifugal compressor of a compressed air energy storage system, and include a cap, a rotating handle, a set screw, a jacket, a distance sleeve, a deep Groove ball bearings, bushings, diffuser blades, etc., can manually adjust the installation angle of the diffuser blades. The main advantage of the present invention is that the adjustment mechanism of the vane diffuser is manually adjusted, without complex actuators and transmission linkages, etc., while reducing the complexity of the device, it can avoid interference to the flow field inside the volute; the vane diffuser The compressor adjustment mechanism is equipped with dials, metal pointers, etc., which can avoid control errors caused by the actuator and improve the accuracy of the compressor test results.

Description

technical field [0001] The invention belongs to the technical field of compressed air energy storage centrifugal compressor testing, and relates to a vane diffuser adjustment mechanism, in particular to a manually adjustable vane diffuser adjustment mechanism of a centrifugal compressor and a control method thereof. Background technique [0002] Compressed air energy storage technology is considered to be one of the most potential large-scale physical energy storage technologies, and the compressor used in the system is usually a centrifugal compressor. The adjustable vane diffuser is one of the main components of the centrifugal compressor. Its performance has an important impact on the efficiency, pressure ratio and operating range of the whole machine. It is necessary to carry out aerodynamic performance experiments and tests to meet the requirements of compressed air energy storage. High efficiency and wide operating conditions of the system. [0003] At present, the st...

AI Technical Summary

Problems solved by technology

However, in the centrifugal compressor test process, there are the following problems: (1) The control accuracy of the pneumatic or electric actuator is not high, and the actual functional relationship between the stroke of the actuator and the angle of the diffuser deviates greatly from the theoretical value, resulting in errors in the test results (2) The connecting rod passes through the volute and connects with the actuator, which interferes with the flow field inside the volute, resulting in a large error in the test results

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