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A steam turbine rotor fork-shaped blade installation structure and installation method thereof

A technology of steam turbine rotor and installation method, which is applied to the supporting elements of blades, mechanical equipment, engine elements, etc., can solve the problems of weak installation structure and easy existence of gaps, and achieve the effect of preventing loosening and ensuring installation firmness.

Active Publication Date: 2021-08-10
浙江合泰热电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above existing technical solutions have the following defects: after all the blades are installed, the last blade needs to be locked, and when the blade root of the last blade is inserted into the wheel groove, there is likely to be a gap between the bottom surface of the last blade root and the bottom surface of the wheel groove , leading to the problem that the installation structure is not firm

Method used

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  • A steam turbine rotor fork-shaped blade installation structure and installation method thereof
  • A steam turbine rotor fork-shaped blade installation structure and installation method thereof
  • A steam turbine rotor fork-shaped blade installation structure and installation method thereof

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Embodiment 1

[0048] refer to figure 1 and figure 2 , is a steam turbine rotor fork-shaped blade installation structure disclosed in the present invention, including a rotor 1 and a fork-shaped blade 2 connected to the periphery of the rotor 1, and a mounting seat 3 is integrally formed on the side wall of the rotor 1, and the mounting seat 3 is annular. And coaxial with the rotor 1, a fork-shaped wheel groove 4 is provided, and a number of intermediate blades 5 are slidably engaged in the fork-shaped wheel groove 4, and the blade roots of the intermediate blades 5 are slidably engaged in the fork-shaped wheel groove 4. The side wall of the wheel groove 4 is provided with a wheel groove 6 along the radial direction of the rotor 1, and the last blade 7 is pierced in the wheel groove 6, and a locking assembly for locking the last blade 7 is also arranged on the wheel groove 6 8. After inserting the middle blade 5 into the fork-shaped wheel groove 4, slide the middle blade 5 so that several ...

Embodiment 2

[0055] A method for installing a steam turbine rotor fork-shaped blade, comprising the following steps,

[0056] S1, insert the blade roots of the middle sheets through the wheel groove 6 in turn, and then slide inward along the fork-shaped wheel groove 4, so that the blade roots of several middle sheets are arranged closely, and the fork-shaped wheel grooves are arranged in 4 rows through the middle sheets Full;

[0057] S2, such as image 3 As shown, a first prefabricated hole 13 is provided on the side wall of the wheel groove 6 on the mounting seat 3, and a second prefabricated hole 14 corresponding to the first prefabricated hole 13 is provided at the root of the last blade 7. The aperture of the second prefabricated hole 14 is greater than or equal to the diameter of the first prefabricated hole 13;

[0058] S3, insert the blade root of the last blade 7 into the wheel groove 6, at this time there is a gap between the lower surface of the blade root of the last blade 7 ...

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Abstract

The invention discloses a steam turbine rotor fork blade installation structure, which relates to the technical field of steam turbine blade installation and aims to solve the problem that the installation gap cannot be eliminated when the traditional blade installation is performed. Fork-shaped blade, the rotor side wall is connected with a mounting seat, the mounting seat and the rotor are coaxially provided with an annular fork-shaped wheel groove, and a plurality of intermediate blades are slidably clamped in the fork-shaped wheel groove. The sidewall of the wheel groove is provided with a wheel groove along the radial direction of the rotor, the end blade is passed through the wheel groove, and the wheel groove is provided with a locking assembly for locking the end blade. The installation structure of the fork-shaped blade of the steam turbine rotor of the invention has the advantages of simple and firm installation, and can effectively eliminate the installation gap.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a steam turbine rotor fork-shaped blade installation structure and an installation method thereof. Background technique [0002] The steam turbine, also known as the steam turbine engine, is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and then sprays onto the blades, so that the rotor equipped with blade rows rotates and works externally. Steam turbines are the main equipment of modern thermal power plants, and are also used in metallurgical industry, chemical industry, and ship power plant. [0003] The airfoil is the working part of the blade, and the airflow channel is formed between the airfoil parts of adjacent blades, and the kinetic energy is converted into mechanical energy when the steam flows through. According to the changing law of the cross-section of the blade sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D5/30F01D5/32
CPCF01D5/3007F01D5/326
Inventor 王重伟
Owner 浙江合泰热电有限公司
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