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Multi-working-medium axial air inlet axial-flow type gas compressor

An axial air intake and compressor technology, used in axial flow pumps, mechanical equipment, non-variable-capacity pumps, etc., can solve the problems of complex overall structure and heavy rotor, achieve uniform and stable circulation, and reduce resistance.

Inactive Publication Date: 2019-02-22
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure is not suitable for high-power units with large power and heavy rotor, and the overall structure is relatively complicated

Method used

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  • Multi-working-medium axial air inlet axial-flow type gas compressor
  • Multi-working-medium axial air inlet axial-flow type gas compressor
  • Multi-working-medium axial air inlet axial-flow type gas compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 , Figure 4 As shown, in this embodiment, a multi-working fluid axial inlet axial flow compressor includes a diffuser section 1, a rectification section 2, a constriction section 3 and an internal device for rectifying the working fluid along the axial inlet. A compressor casing with a cylindrical flow channel, inside the compressor casing are arranged in sequence along the direction of gas flow a diversion cone 4, a cylindrical structure 11, a front bearing housing 5, a rotor 7 and a rear bearing arranged in the cylindrical structure 11 Box 9, the outer surface of the guide cone 4, the outer surface of the cylindrical structure 11 and the blades of the rotor 7 and the inner surface of the compressor casing form a flow part 6, and the flow part 6 communicates There is an exhaust volute 8 arranged on the compressor casing.

[0031] The working fluid enters the compressor casing through the diffuser section 1, the rectifying section 2, and the contracting ...

Embodiment 2

[0034] like figure 1 As shown, on the basis of the above-mentioned embodiments, in this embodiment, the through-hole cross-sectional area of ​​the diffuser section 1 gradually increases along the gas flow direction, and the through-hole cross-sectional area of ​​the rectifying section 2 remains unchanged. The cross-sectional area of ​​the through hole in the constriction section 3 decreases successively, and the maximum cross-sectional area of ​​the through hole in the diffuser section 1 is equal to the cross-sectional area of ​​the through hole in the rectifying section 2, which is equal to the maximum cross-sectional area of ​​the through hole in the constriction section 3. Area, the through holes of the diffuser structure 1, the through holes of the rectification structure 2 and the through holes of the contraction structure 3 are all coaxial with the flow part 6, and the rectification structure 2 is provided with honeycomb panels, rectification nets or Rectification grid. ...

Embodiment 3

[0036] On the basis of the above embodiments, in this embodiment, the cylindrical structure 11 is in sealing connection with the front bearing housing 5 . The cylindrical structure 11 and the front bearing housing 5 are used to form a double-layer structure to increase the effect of sealing and isolation, avoid two-way flow of the working fluid and lubricating oil, and prevent the lubricating oil from entering the flow structure 6 and causing pollution to the working fluid. A sealing device is also provided between the cylindrical structure 11 and the rotor 7 to prevent the working fluid from entering the front bearing housing 5, so as to enhance the sealing performance of this solution. In this embodiment, other contents not described are the same as those in the foregoing embodiments, so details are not repeated.

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PUM

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Abstract

The invention discloses a multi-working-medium axial air inlet axial-flow type gas compressor. The multi-working-medium axial air inlet axial-flow type gas compressor comprises a pressure expanding segment, a rectification segment, a shrinkage segment and a gas compressor shell internally provided with a cylinder hole; the pressure expanding segment, the rectification segment, the shrinkage segment and the gas compressor shell carry out air inlet in the axial direction to carry out rectification on working media in the axial direction, a flow guide cone, a cylindrical structure, a front bearing box, a rotor, and a rear bearing box are arranged in the gas compressor shell in the gas circulation direction in the sequence, the front bearing box, the rotor and the rear bearing box are arrangedin the cylindrical structure, through-flow parts are arranged between the outer surface of the flow guide cone and the inner surface of the gas compressor shell, between the outer surface of the cylindrical structure and the inner surface of the gas compressor shell and between the outer surface of the rotor and the inner surface of the gas compressor shell, and the through-flow parts communicatewith an exhaust volute arranged on the gas compressor shell. The gas compressor has the beneficial effects that the flow guide cone is used for dispersing the working media, and increasing the pressure in the working media, and the working media can evenly enter the through-flow structures to meet the measuring needs.

Description

technical field [0001] The invention relates to the technical field of axial-flow compressors, in particular to an axial-flow compressor with multi-working fluid axial intake. Background technique [0002] Due to the high price of some working fluids, air or nitrogen can be used for simulation in routine tests. However, because the physical properties of different working fluids are quite different, when the same pressure ratio is reached, the required speed of the working medium is different from that of the air. Therefore, the model needs to meet the performance requirements under various conditions at the same time. Due to measurement needs, the working medium is required to be as uniform as possible in the flow channel. At the same time, technical preparations are made for the development of high-power units, and the structure and shafting of the units are determined to meet the structural requirements of high-power units. [0003] Conventional axial flow compressors ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D19/00F04D29/056F04D29/063F04D29/08F04D29/54F04D29/64F04D29/00
CPCF04D19/00F04D29/002F04D29/056F04D29/063F04D29/083F04D29/541F04D29/644
Inventor 廖健鑫田瑞青李冠陈付张粉王培培
Owner DONGFANG TURBINE CO LTD