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A compressor stability expansion system and a compressor mechanism applied to the system

A technology for compressors and casings, applied in the field of compressors, which can solve the problems of small internal flow of compressors, limited widening range of compressor stable working conditions, and decline in compressor performance, so as to improve internal flow and expand the range of stability The effect of widening and widening the stable area

Active Publication Date: 2016-04-06
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology

However, since its overall structure will not change after manufacture, on the one hand, its fixed built-in channel structure, since there are no active parts, is passive to change the flow field during the operation of the compressor, causing it to change the compression The degree of internal flow of the compressor is small, and the range of stable working conditions of the compressor is limited; Internal flow, especially when operating under a variety of complex working conditions, is particularly serious, often causing a large drop in compressor performance

Method used

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  • A compressor stability expansion system and a compressor mechanism applied to the system
  • A compressor stability expansion system and a compressor mechanism applied to the system
  • A compressor stability expansion system and a compressor mechanism applied to the system

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Embodiment Construction

[0025] combine here Figure 1-5 Concrete structure and workflow of the present invention are described as follows:

[0026] For ease of understanding, the following definition is made here for the "inner arc surface of the compressor casing cover plate b": the inner arc surface of the compressor casing cover plate b is located at the half-open impeller of the compressor impeller cavity, and at the same time This position is also the turning point of the gas in its impeller, for details, please refer to Figure 4-5 shown.

[0027] Figure 2-3 It is a structural schematic diagram of the compressor used in the present invention, which specifically includes centrifugal compressor components such as a semi-open impeller, a compressor casing cover b, a machine cover and a diffuser, and the present invention is applicable to Figure 2-3 The single-stage centrifugal compressor shown is also applicable to a multi-stage centrifugal compressor based on the principles of the present in...

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Abstract

The invention belongs to the technical field of a compressor, in particular to a compressor stability expanding system and a compressor mechanism applied to the same. The compressor stability expanding system comprises a sensor, a backflow channel and a controller; the sensor is a vibration sensor or / and a pressure sensor; the backflow channel is provided with an opening and closing switch; the controller is used for receiving the information of the sensor and correspondingly controlling the opening and closing switch to realize the opening and closing operation. The invention also provides the compressor mechanism applied to the compressor stability expanding system; the compressor mechanism comprises a compressor enclosure cover plate; an annular air collection cavity is arranged in the compressor enclosure cover plate in a hollow mode; the annular air collection cavity is provided with air inlets and air outlets; the air inlets penetrate through the plate body of the compressor enclosure cover plate along the axial direction of a compressor wheel axle; the air inlet ports of the air inlets are positioned in the arc surface in the compressor enclosure cover plate; the backflow channel is arranged by being communicated with the annular air collection cavity. The aim that the compressor stability expanding system is more optimized is achieved.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to a compressor stability expansion system and a compressor mechanism applied to the system. Background technique [0002] Centrifugal compressors are widely used in oil refining, chemical industry, metallurgy, refrigeration and air conditioning and other fields. The centrifugal compressor has a certain stable working range. When the compressor operates in an unstable working condition, the performance will be greatly deteriorated, which may further cause the compressor to stall and surge, and even cause the machine to fail to work normally, eventually causing major accidents. Aiming at the characteristic of the stable working range of centrifugal compressors, researchers have carried out many studies, such as expanding the stable working range through compressor inlet guide vanes, diffuser adjustment and casing slotting, etc., which are published in the announcement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00F04D29/42
Inventor 赵远扬李连生肖军杨启超刘广彬王乐唐斌许明
Owner HEFEI GENERAL MACHINERY RES INST
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