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800 kW axial flow air turbine based on multi-stage small enthalpy drop blade structure

A blade structure and air turbine technology, which is applied to blade support elements, machines/engines, and leakage prevention. It can solve the difficult problems of high-efficiency axial flow turbines, and achieve the improvement of single-stage blade efficiency and air level. Effect of reduction in working ability and secondary flow loss

Pending Publication Date: 2022-06-24
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-parameter and small-capacity units, it is extremely difficult to develop high-efficiency axial flow turbines

Method used

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  • 800 kW axial flow air turbine based on multi-stage small enthalpy drop blade structure
  • 800 kW axial flow air turbine based on multi-stage small enthalpy drop blade structure
  • 800 kW axial flow air turbine based on multi-stage small enthalpy drop blade structure

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Experimental program
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Effect test

specific Embodiment approach 1

[0028] Embodiment 1: Combining Figure 1-Figure 4 Illustrating this embodiment, the 800kW axial flow air turbine based on the multi-stage small enthalpy drop vane structure includes a front bearing box 1, a front end shaft seal 2, a cylinder 3, a stationary blade assembly 4, a moving blade assembly 5, Rotor 6, rear end shaft seal 7, rear bearing box 8 and platform base 9;

[0029] The front bearing box 1 is mounted on the front end of the cylinder 3, the rear bearing box 8 is mounted on the rear end of the cylinder 3, the stationary vane assembly 4 is mounted on the inner wall of the cylinder 3, the moving vane assembly 5 is sleeved on the outer wall of the rotor 6, and the rotor 6 is horizontally installed in the cylinder 3, the front end of the rotor 6 is rotatably connected and inserted in the front bearing box 1, the rear end of the rotor 6 is rotatably inserted in the rear bearing box 8, and the moving blade assembly 5 on the outer side wall of the rotor 6 is connected wi...

specific Embodiment approach 2

[0031] Specific implementation mode 2: Combining Figure 4 Illustrating this embodiment, an 800kW axial flow air turbine based on a multi-stage small enthalpy drop blade structure described in this embodiment further includes a front thrust support combined bearing 1-1 and a rear support bearing 8-1; the front thrust support The joint bearing 1-1 is installed in the front bearing box 1, and the rear support bearing 8-1 is installed in the rear bearing box 8. The front end of the rotor 6 is rotatably connected with the front bearing box 1 through the front thrust support joint bearing 1-1. The end is rotatably connected to the rear bearing housing 8 through the rear support bearing 8-1. Other compositions and connection methods are the same as those in the first embodiment.

specific Embodiment approach 3

[0032] Specific implementation three: combination Figure 4 Illustrating this embodiment, an 800kW axial flow air turbine based on a multi-stage small enthalpy drop vane structure described in this embodiment, the front end and rear end of the cylinder 3 are respectively supported on the front bearing box 1 and the rear bearing box 8 through cat claws superior. The lower half of the cylinder 3 is connected with the front and rear bearing housings through guide keys. The cylinder 3 in this embodiment adopts a single-layer cylinder structure, which can adapt to the characteristics of the working environment of 535°C / 0.75MPa at the inlet of the turbine and 0.2MPa at the outlet. Other compositions and connection modes are the same as those in the second embodiment.

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Abstract

The invention discloses an 800kW axial flow air turbine based on a multi-stage small enthalpy drop blade structure, relates to an axial flow air turbine, and aims to solve the design problem of a high-parameter small-capacity axial flow air turbine. The 800kW axial flow air turbine comprises a front bearing box, a front end shaft seal, an air cylinder, a static blade assembly, a movable blade assembly, a rotor, a rear end shaft seal, a rear bearing box and a platform base; the front bearing box is installed at the front end of the air cylinder, the rear bearing box is installed at the rear end of the air cylinder, the static blade assembly is installed on the inner side wall of the air cylinder, the movable blade assembly is installed on the outer side wall of the rotor, the rotor is horizontally installed in the air cylinder, the front end of the rotor is rotationally connected and inserted into the front bearing box, and the rear end of the rotor is rotationally connected and inserted into the rear bearing box. A moving blade assembly on the outer side wall of the rotor is matched with a static blade assembly in the air cylinder, and the front bearing box and the rear bearing box are installed on the platform base. The invention belongs to the technical field of axial flow turbine design.

Description

technical field [0001] The invention relates to an axial flow air turbine, in particular to an 800kW axial flow air turbine based on a multi-stage small enthalpy drop blade structure, and belongs to the technical field of axial flow turbine design. Background technique [0002] New energy sources such as wind energy and solar energy are greatly affected by natural factors, and have obvious natural attributes such as volatility, intermittency and anti-peak regulation, which pose a major challenge to the safe operation of the power system. It has become the only way to achieve the dual carbon goal. [0003] Using air as the circulating medium and using heat pump circulation for high temperature thermal storage is an important technical route in the current energy storage field. As a key component of the power generation system, the air turbine efficiency has a decisive impact on the performance of the power generation system. For high-parameter and small-capacity units, it i...

Claims

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Application Information

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IPC IPC(8): F01D5/06F01D5/14F01D9/04F01D25/16F01D25/24F01D11/00F01D11/04
CPCF01D5/06F01D5/147F01D9/041F01D25/162F01D25/24F01D11/00F01D11/04
Inventor 潘春雨管继伟徐鹏李宇峰赵洪羽王丽华王健关淳赫广迅张春秀魏红阳余海鹏徐殿吉邢冠一
Owner HARBIN TURBINE
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