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Method and apparatus for starting supersonic compressors

A supersonic, compressor technology, applied in the field of compressors

Inactive Publication Date: 2013-10-02
RAMGEN POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Thus, there remains an unmet need for an approach to the design of an easy-to-start supersonic compressor capable of operating at high compression ratios in a stable and efficient manner in the supersonic regime

Method used

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  • Method and apparatus for starting supersonic compressors
  • Method and apparatus for starting supersonic compressors
  • Method and apparatus for starting supersonic compressors

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Embodiment Construction

[0045] Described here are high compression ratio and high efficiency supersonic gas compressors such as Figure 7A An exemplary design and construction method for compressor 18 is shown. Throughout the specification, the term inlet relative Mach number ("M") is discussed as well as the Mach number of the smallest cross-sectional passage or throat of the aerodynamic duct. For the purposes of this specification, unless otherwise clearly stated, or unless the particulars referred to require another explanation, the various Mach numbers discussed and illustrated in detail herein are given as mass averages, where the term mass average means , the local Mach numbers for the flow region of interest are weighted by the local mass flow and then averaged by the total flow. Mathematically, this expression can be described by the following formula:

[0046] M ‾ = ∫ A ...

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Abstract

A supersonic gas compressor with bleed gas collectors, and a method of starting the compressor. The compressor includes aerodynamic duct(s) situated for rotary movement in a casing. The aerodynamic duct(s) generate a plurality of oblique shock waves for efficiently compressing a gas at supersonic conditions. A convergent inlet is provided adjacent to a bleed gas collector, and during startup of the compressor, bypass gas is removed from the convergent inlet via the bleed gas collector, to enable supersonic shock stabilization. Once the oblique shocks are stabilized at a selected inlet relative Mach number and pressure ratio, the bleed of bypass gas from the convergent inlet via the bypass gas collectors is effectively eliminated.

Description

technical field [0001] The present invention relates to a compressor for efficiently compressing various gases, and more particularly, to a method of starting a gas compressor to operate stably in a supersonic state, and to a device employing this method. Background technique [0002] In view of ever-increasing energy costs, the development of improved, efficient compression processes has become increasingly important. Also, compression of various residual or by-product gases, including carbon dioxide, is expected to become more important and more common in various power generation processes, including some in conjunction with fuel synthesis processes, because of the significant contribution to the reduction of carbon dioxide emissions ( sequestration) became urgent. Therefore, reducing the cost of gas compression by providing an efficient gas compressor is desirable in various gas compression applications. When compressing high molecular weight gases, the reduction of ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D21/00
CPCF04D27/0215F04D21/00
Inventor 肖恩·P·劳勒
Owner RAMGEN POWER SYST