High-temperature-resistant valve rod for steam turbine

A high-temperature-resistant, steam-turbine technology, applied to valve devices, mechanical equipment, engine components, etc., can solve problems such as inconvenient use

Pending Publication Date: 2021-09-10
HUANENG POWER INT CO LTD DEZHOU POWER PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after the spray coating of the existing valve stem falls off, the valve stem needs to be cleaned and re-sprayed, which is very inconvenient to use

Method used

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  • High-temperature-resistant valve rod for steam turbine
  • High-temperature-resistant valve rod for steam turbine

Examples

Experimental program
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Embodiment Construction

[0022] Examples such as figure 1 and 2 As shown, a high-temperature-resistant valve stem for a steam turbine includes a rod body 1. A high-temperature-resistant unit is arranged outside the rod body 1. The high-temperature-resistant unit is connected to the rod body 1 through a detachable unit to facilitate later maintenance and replacement and improve the use convenience.

[0023] The high temperature resistant unit includes a plurality of guard plates 2 , the cross section of the guard plates 2 is arc-shaped, and the plurality of guard plates 2 are arrayed in a ring on the outer circumference of the rod body 1 .

[0024] The plurality of guard plates 2 are sequentially connected end-to-end through connecting units, so as to realize complete coverage of the rod body 1 and improve the service life of the rod body 1 .

[0025] The length of the guard plate 2 is equal to the length of the rod body 1, and the guard plate 2 and the rod body 1 are bonded together, and the outer p...

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Abstract

The invention discloses a high-temperature-resistant valve rod for a steam turbine. The high-temperature-resistant valve rod comprises a rod body, a high-temperature-resistant unit is arranged outside the rod body, and the high-temperature-resistant unit is connected with the rod body through a detachable unit. According to the high-temperature-resistant valve rod, fitting and protection of a rod plugging body are achieved by arranging a protection plate, the high-temperature resistance of the valve rod is improved by arranging an inner high-temperature spraying layer on the protection plate, detachable connection of the protection plate and the rod body is achieved by arranging a sliding block and a sliding groove, replacement of the protection plate is facilitated, the maintenance efficiency is improved, by arranging a first boss and a second boss, a perfect overlap between two adjacent protection plates is achieved, and the outer circular surface of the rod body can be fully covered. The high-temperature-resistant valve rod solves the problem that after a spraying layer of an existing valve rod falls off, the valve rod needs to be cleaned up and sprayed again, and using is quite inconvenient.

Description

technical field [0001] The invention relates to a steam turbine valve rod, in particular to a high temperature resistant valve rod used for a steam turbine, and belongs to the technical field of steam turbines. Background technique [0002] The valve stem of the steam turbine is a part used to adjust the steam flow. It often works in a high temperature and high pressure environment. The valve stem is equipped with a high temperature resistant spray coating. [0003] However, after the spray coating of the existing valve stem falls off, the valve stem needs to be cleaned and re-sprayed, which is very inconvenient to use. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a high-temperature-resistant valve stem for a steam turbine. [0005] In order to solve the above-mentioned problems, the present invention adopts the following technical solutions: a hi...

Claims

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Application Information

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IPC IPC(8): F01D17/10F16K51/00
CPCF01D17/105F16K51/00
Inventor 张兰庆孙永军
Owner HUANENG POWER INT CO LTD DEZHOU POWER PLANT
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