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A double-groove automatic adjustment casing processing device for centrifugal compressors

A centrifugal compressor and automatic adjustment technology, which is applied to the components of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve the problems that cannot meet the needs of improving surge and increasing blocking flow, and achieve broadening of working flow Reasonable scope and structure design, easy to achieve effect

Active Publication Date: 2017-11-14
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology

Visible as figure 1 The scheme shown cannot meet the requirements of improving surge and increasing blocking flow at the same time, it can only compromise the two functions and choose one of them

Method used

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  • A double-groove automatic adjustment casing processing device for centrifugal compressors
  • A double-groove automatic adjustment casing processing device for centrifugal compressors
  • A double-groove automatic adjustment casing processing device for centrifugal compressors

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] A dual-slot self-regulating casing handling device for centrifugal compressors, such as figure 2 , 3 As shown, it includes a compressor casing 1, a volute cavity 5 is arranged at the entrance of the compressor casing 1, and the volute cavity 5 is located in the air inlet of the compressor; the compressor casing 1 is provided with a volute The cavity 5 leads to the front groove 2 and the rear groove 3 of the inner cavity of the compressor, and the axial position of the front groove 2 and the rear groove 3 should be between the impeller leading edge 8 and the impeller trailing edge 10 of the impeller 9, The front groove 2 in this embodiment is located axially near the impeller le...

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Abstract

The invention provides a dual-slot automatic adjustment casing processing device for a centrifugal compressor, comprising a compressor casing, a volute chamber is arranged at the entrance of the compressor casing; a volute is arranged on the compressor casing The cavity leads to the front slot and the rear slot of the inner cavity of the compressor, the front slot is located axially close to the leading edge of the impeller, and the rear slot is located axially close to the main blade or splitter blade throat of the impeller ; A plate valve that can move freely in the axial direction of the compressor is set in the volute chamber, and the compressor casing is respectively provided with a front limit structure and a rear limit structure on both sides of the plate valve. The front limiting structure is arranged between the front groove and the rear groove, and the rear limiting structure is arranged behind the rear groove. Compared with the prior art, the present invention has the following advantages: an automatically switchable valve is installed at the inlet of the compressor casing to control the double-groove wheel casing, thereby widening the working flow range of the compressor.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, and in particular relates to a double-groove automatic adjusting casing processing device for a centrifugal compressor. Background technique [0002] In order to cooperate with the reciprocating working process of the internal combustion engine, the turbocharger compressor needs to work in a wide flow range. Because, when the engine is running at low speed, the flow rate of the compressor is small, resulting in a high pressure ratio of the compressor, which causes the compressor to surge and cannot provide intake air for the engine; when the engine is running at a high speed, the flow rate of the compressor is large, but This can cause the compressor to become clogged, making the compressor less efficient and unable to provide sufficient airflow to the engine. [0003] In the prior art, there are many ways to widen the working flow range of the compressor, among which the treatment of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/66
Inventor 陈化王晓春佟鼎庄丽刘莹
Owner CHINA NORTH ENGINE INST TIANJIN
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