Method for installing nuclear power half-speed steam turbine

A technology of a half-speed steam turbine and an installation method, which is applied to mechanical equipment, engine components, machines/engines, etc., can solve the problems of difficulty in meeting installation requirements and large external dimensions, and achieve stable support, high measurement accuracy, and guaranteed accuracy. Effect

Active Publication Date: 2014-07-23
SEPCOIII ELECTRIC POWER CONSTR CO LTD
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  • Abstract
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Problems solved by technology

Compared with the CPR nuclear power full-speed machine, the CPR nuclear power half-speed machine has larger dimensions of the inlet pipe, valve, and cylinder than the conventional high-parameter thermal power steam turbine, esp

Method used

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  • Method for installing nuclear power half-speed steam turbine
  • Method for installing nuclear power half-speed steam turbine
  • Method for installing nuclear power half-speed steam turbine

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Embodiment Construction

[0080] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings. The invention discloses a method for installing a nuclear power half-speed steam turbine. The steps of the installation method are: Ⅰ foundation inspection and secondary pre-embedded installation; Ⅱ low pressure cylinder assembly and installation; Steps for installation in and connection.

[0081] Ⅰ Basic inspection and secondary embedded installation:

[0082] 1) Foundation inspection and scribing, drawing out the longitudinal and horizontal centerlines of the turbogenerator and the centerlines of each bearing on the foundation, and rechecking the dimensions of each center of the foundation;

[0083] 2) The support plate points are hoisted in place, the center line and elevation of the support plate are determined, and the second grouting is delivered after ensuring that the design requirements are met;

[0084] 3) Install the guide devi...

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Abstract

The invention discloses a method for installing a nuclear power half-speed steam turbine. The method comprises the steps of I, foundation inspection and secondary embedded installation; II, assembly and installation of a low-pressure cylinder; III, assembly and installation of a high and middle-pressure cylinder; IV, axis alignment and connection installation. The assembly and installation of a high and middle-pressure cylinder comprise the steps of (1), overhaul and installation of a thrust bearing; (2) measurement and regulation of a middle gland casing; (3) load distribution of the high and middle-pressure cylinder. The method has the advantages that load measurement is performed on a claw of the high and middle-pressure cylinder through a hydraulic jacking method, the method is simple in operation and high in measurement accuracy, jacking oil is injected during axis alignment, and accuracy of axis alignment is ensured.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a method for installing nuclear power half-speed steam turbines. Background technique [0002] The nuclear power half-speed machine is relative to the full-speed machine, which means that the speed of the steam turbine unit during normal operation is half of the full-speed machine. The blades of the half-speed machine have high reliability and low exhaust loss. The reduction of the speed can reduce the erosion of the blades by the wet steam and change the fluidity of the steam, thereby improving the thermal efficiency. Compared with the CPR nuclear power full-speed machine, the CPR nuclear power half-speed machine has larger dimensions of the inlet pipe, valve, and cylinder than the conventional high-parameter thermal power steam turbine, especially the cylinder, rotor and other major equipment, which are all "ultra-long, ultra-wide, "Overweight" equipment, if the convent...

Claims

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Application Information

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IPC IPC(8): F01D25/28
Inventor 王洪栋李鑫熙
Owner SEPCOIII ELECTRIC POWER CONSTR CO LTD
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