Turbine machinery

A technology of turbo machinery and sealing coating, which is applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of reducing the leakage resistance effect, reducing the efficiency of the unit, and the wear of seals, so as to improve the mechanical efficiency, Effects of life extension and energy consumption reduction

Active Publication Date: 2015-10-14
SHANGHAI JUSN SURFACE TECH ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the compressed object is in a state of high flow rate and is hard particles, it will cause serious wear to the seal, resulting in a larger gap and reduced leakage resistance, resulting in increased loss and reduced efficiency of the unit. In severe cases, it must be shut down for maintenance, affecting Production

Method used

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Embodiment Construction

[0040] The present invention is described in detail below in conjunction with accompanying drawing:

[0041] Such as figure 2 Shown is the internal structure diagram of the turbo compressor. The inner wall of the casing 14 is coated with a sealing coating 2 . The sealing coating 2 includes two layers of sub-coatings, namely an alloy layer 21 coated on the inner wall of the casing 14 and a cermet layer 22 coated on the surface of the alloy layer 21 . In the working state of the turbo compressor, the compressor blades 11 rotate around the rotating shaft 12, and the tip 13 scrapes the cermet layer 22 of the sealing coating 2, so that the gap between the compressor blades 11 and the casing 14 is minimized, reducing the compression. The leakage in the process can be improved, the mechanical efficiency of the turbo compressor can be improved, the energy consumption can be reduced, and the service life can be extended.

[0042] The composition weight percentage content of the all...

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Abstract

The invention discloses turbine machinery. The turbine machinery is characterized in that the turbine machinery is coated with a sealing coating; the sealing coating comprises at least two sub-coatings which are an alloy layer smeared on the surface of a base body and a metal ceramic layer smeared on the surface of the alloy layer respectively. A gap of the turbine machinery is coated with the sealing coating. In the working state, the tips of blades scrape the sealing coating to form ideal radial airflow gap, i.e., the maximum differential pressure is obtained with the minimum gap; the efficiency of the machinery is remarkably improved, energy consumption is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to a turbomachine. Background technique [0002] With the rapid development of science and technology, the requirements for mechanical efficiency are getting higher and higher. At the same time, the concept of energy saving and environmental protection is also deepening in product design and manufacturing technology. In turbomachinery, the practicability and reliability of gap seals are of great significance for improving mechanical efficiency, ensuring safe operation of machinery, energy saving and environmental protection. Taking the turbocompressor in turbomachinery as an example, it is developing towards the application direction of large capacity, high efficiency and high compression ratio. [0003] Such as figure 1 As shown, under the working state, the compressor blade 11 of the compressor 1 rotates around the rotating shaft 12, the smaller the gap between the tip 13 of the compressor blade 11 and the inner wall of the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/12C23C4/08C23C4/06F04D29/40F04D29/08F04D29/02
Inventor 张幸王建康
Owner SHANGHAI JUSN SURFACE TECH ENG
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