Rotary machine

A technology of rotating machinery and rotating body, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as poor lubricating oil sealing effect, and achieve the effect of preventing lubricating oil leakage, enhancing sealing effect, and improving sealing effect.

Pending Publication Date: 2021-01-05
CHINA UNITED GAS TURBINE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing seals are not effective in sealing the lubricating oil flowing out along the shaft surface, and there is a need for improvement

Method used

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  • Rotary machine

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Embodiment Construction

[0020] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. In describing the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "inner", "outer", "axial", "radial", "circumferential ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific configuration and operation, and therefore should not be construed as limiting the invention.

[0021] Such as figure ...

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Abstract

The invention discloses a rotary machine. The rotary machine comprises a stator, a first stator and a sealing assembly, the rstator is in a step shape and comprises a plurality of step surfaces and aplurality of peripheral surfaces, the adjacent peripheral surfaces are connected through the corresponding step surfaces, protrusion parts are formed between the peripheral surfaces and the step surfaces, the first stator surrounds the rotator, a gap is formed between the first stator and the rotator, an annular groove is formed in the inner circumferential surface of the first stator, part of themultiple step surfaces are arranged opposite to the annular groove, a first air inlet hole is formed in the first stator and communicates with the annular groove, the sealing assembly comprises a plurality of first sealing parts, the first sealing parts are arranged on the inner circumferential surface of the first stator and are are arranged opposite to the outer circumferential surfaces, and the adjacent first sealing parts are spaced through the annular groove. The rotary machine has the advantages of being good in sealing effect and capable of effectively preventing lubricating oil from leaking.

Description

technical field [0001] The invention relates to the technical field of sealing, in particular to a rotary machine. Background technique [0002] In rotary machinery such as gas turbine compressors or turbines, it is usually necessary to seal the fluid to reduce leakage and ensure the normal operation of the rotary machinery. In the related art, when the gas turbine unit is in operation, the bearing housing at the intake end of the compressor is filled with oil mist, and a part of the lubricating oil discharged from the sliding bearing flows along the axial direction against the surface of the shaft to leak. Usually, seals such as grate teeth are provided between the bearing seat and the shaft, and the radial gap between the bearing seat and the shaft is reduced by the seal to reduce oil mist and leakage of lubricating oil flowing along the shaft surface. [0003] However, the existing seals are not effective in sealing the lubricating oil flowing out along the shaft surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/10F04D29/063F01D25/18F01D11/00F01D11/02
CPCF01D11/003F01D11/02F01D25/183F04D29/063F04D29/102
Inventor 谢意
Owner CHINA UNITED GAS TURBINE TECH CO LTD
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