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Recycle gas compressor module level and design method thereof

A technology of compressor and circulating gas, which is applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., and can solve the problems of high energy consumption, complex structure of the unit, and large footprint

Active Publication Date: 2012-01-11
SHENYANG BLOWER WORKS GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the structure of the unit is complicated, the floor area is large, and the energy consumption is high.

Method used

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  • Recycle gas compressor module level and design method thereof
  • Recycle gas compressor module level and design method thereof
  • Recycle gas compressor module level and design method thereof

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Embodiment Construction

[0090] Such as figure 1 Shown, the structure of the recycle gas compressor model stage of the present invention (that is, the impeller meridian flow channel) is as follows:

[0091] The model stage of the circulating gas compressor is located in the compressor, and is provided with an impeller 1 and a diffuser 2. The impeller 1 is arranged at the inlet of the model stage (that is, the stage inlet 3), and the vane diffuser 2 is arranged at the outlet of the model stage ( That is, the stage outlet 4) position; the impeller 1 is a semi-open ternary flow impeller, and the diffuser 2 is a diffuser with full-height airfoil blades. After design and analysis, the meaning of each size in the meridian flow channel of the impeller is stipulated:

[0092] D. 0 - the diameter of the inlet of the cover plate;

[0093] D. 2 - impeller outlet diameter;

[0094] D. 4 - Diffuser outlet diameter;

[0095] b 2 - the width of the impeller outlet;

[0096] L s - Axial span of cover plate ...

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Abstract

The invention belongs to the centrifugal compressor module level, specifically to a recycle gas compressor module level and a design method thereof, suitable for the modeling design of the recycle gas compressor product for all of polyethylene and polypropylene units as well as the centrifugal compressor product for other units having similar parameters. The module level comprises a semi-open three-dimensional flow impeller and a vane diffuser; the modeling design of the centrifugal compressor performed according to the similar modeling theory can provide the module level for the similar modeling design of the recycle gas compressor for the polyethylene and polypropylene units of different sizes. The parameters of module level are as follows: the machine mach Mu2 is 0.5; the flow coefficient Phi1 is 0.152; the energy head coefficient T is 0.54; and the variable frequency Hpo1 is 0.82-0.84. The application of the large flow coefficient module level enables the recycle gas compressor for the polyethylene and polypropylene units and the centrifugal compressor for other units having similar parameters to avoid adopting a complicated double-sucking structure and to have higher operation efficiency and working condition range.

Description

technical field [0001] The invention belongs to a model stage for a centrifugal compressor, specifically a cycle gas model stage and a design method thereof, which is applicable to the modeling design of cycle gas compressor products for all polyethylene and polypropylene devices, and can also be applied to similar parameters Modeling design of centrifugal compressor products for other devices. Background technique [0002] In the development process of the centrifugal compressor, the design of the model stage is particularly critical, and the corresponding model stage should be designed for new products. Before it is formally applied to actual products, it is necessary to test the actual performance of the model level, that is, to confirm the actual performance of the model level through experiments. However, the test and detection process is time-consuming and requires a lot of manpower and material resources. Due to reasons such as reliability and cycle requirements, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/44F04D29/30
Inventor 许敏刘长胜王学军戴继双王锐孙玉莹
Owner SHENYANG BLOWER WORKS GROUP CORP
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