50MW-grade axial flow sCO2 turbine

An axial flow and turbine technology, which is applied in the direction of machines/engines, non-variable engines, wind power generation, etc., can solve the problems of severe physical and chemical changes, unstable turbine operation, etc., and achieve low air intake loss and low circumferential pressure. Uniform, high cylinder efficiency effect

Pending Publication Date: 2022-05-27
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to solve the severe physical and chemical changes of the supercritical carbon dioxide medium used in the existing supercritical carbon dioxide turbine near the critical point, the 50MW grade axial flow sCO 2 The problem of unstable turbine operation, and then propose a 50MW reactionary back pressure air turbine

Method used

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  • 50MW-grade axial flow sCO2 turbine
  • 50MW-grade axial flow sCO2 turbine
  • 50MW-grade axial flow sCO2 turbine

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0020] Specific embodiment 1: A 50MW grade axial flow sCO 2 The turbine includes a front bearing box 1, an inner cylinder 5, an outer cylinder 6, a rear bearing box 10 and a base frame 16;

[0021] The front bearing box 1 and the rear bearing box 10 are installed on both sides of the outer cylinder 6, the front bearing box 1 and the rear bearing box 10 are both arranged on the base frame 16, and the lower part of the front end of the outer cylinder 6 is connected to the front end through the front centering beam structure 13. The bearing box 1 is connected, the lower rear end of the outer cylinder 6 is connected to the rear bearing box 10 through the rear centering beam structure 11, the exhaust port 6-1 of the outer cylinder 6 is arranged on the top of the outer cylinder 6, and the air inlet 6 of the outer cylinder 6 -2 is provided at the lower part of the side of the outer cylinder 6, and the intake port 6-2 is connected to an intake valve 17.

[0022] In this embodiment: c...

specific Embodiment approach 2

[0024] Specific embodiment 2: A 50MW grade axial flow sCO 2 Turbine, the intake valve 17 is the main gas regulating combined valve.

[0025] Other specific embodiments are the same as the first specific embodiment.

specific Embodiment approach 3

[0026] Specific embodiment three: a 50MW grade axial flow sCO 2 Turbine, the outer cylinder 6 is provided with a rotor 12, the inner cylinder 5 is arranged outside the rotor 12, the front half of the inner cylinder 5 and the rotor 12 are provided with a reverse blade 4 installed on the rotor 12, and the rear half of the inner cylinder There is a forward blade 7 installed on the rotor 12 between the segment and the rotor 12. The front end of the rotor 12 is connected with the front end bearing 2 in the front bearing housing 1, and the rear end of the rotor 12 is connected with the rear end bearing 9 in the rear bearing housing 10. .

[0027] In this embodiment, the through-flow part adopts a double-split structure, the reverse blade and the forward blade are geometrically symmetrical, and the axial thrusts balance each other, which solves the problem of CO 2 Changes in physical properties bring about changes in thrust;

[0028] Preferably, the inner cylinder is equipped with ...

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Abstract

The invention relates to the field of air turbines, in particular to a 50MW-grade axial flow sCO2 turbine, and aims to solve the problems that supercritical carbon dioxide used in an existing supercritical carbon dioxide turbine changes severely near a critical point, and the 50MW-grade axial flow sCO2 turbine runs unstably. The front bearing box and the rear bearing box are both arranged on the base frame, the lower portion of the front end of the outer cylinder is connected with the front bearing box through a front centering beam structure, the lower portion of the rear end of the outer cylinder is connected with the rear bearing box through a rear centering beam structure, an exhaust port of the outer cylinder is formed in the top of the outer cylinder, and an air inlet of the outer cylinder is formed in the lower portion of the side of the outer cylinder. The turbine adopts a double-flow-path single-exhaust design, the arrangement space is saved, the construction cost is reduced, the through-flow part adopts a double-flow-dividing structural design, the air inlet loss is small, the circumferential pressure is uniform, the moving blade and the static blade are geometrically symmetrical, and the axial thrust is mutually balanced.

Description

technical field [0001] The invention relates to the field of air turbines, in particular to a 50MW grade axial flow sCO 2 turbine. Background technique [0002] supercritical carbon dioxide (sCO 2 ) has the characteristics of high density, small flow resistance and high efficiency, sCO 2 Power generation related technology has become a national key project, but sCO 2 The physical properties are unique, the changes are violent near the critical point, and the design is difficult. At present, the axial flow sCO at home and abroad is 2 There are very few turbine engineering designs, and they are all in the research and development test stage. Design and manufacture of supercritical carbon dioxide turbines become constraints on sCO 2 A major bottleneck in power generation technology. The supercritical carbon dioxide medium used in the existing supercritical carbon dioxide turbine has a severe physical and chemical change near the critical point, and the 50MW level axial fl...

Claims

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Application Information

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IPC IPC(8): F01D1/04F01D11/00F01D17/10F01D25/16F01D25/26F01K25/10F01K7/32
CPCF01D1/04F01D25/26F01D25/16F01D17/10F01D11/003F01K25/103F01K7/32Y02E10/72
Inventor 徐鹏刘志德周俊方刘凯余海鹏潘春雨尉坤赵洪羽徐殿吉郭庆丰
Owner HARBIN TURBINE
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