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Stator blade assembly method for steam turbine generator

A turbogenerator and assembly method technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problems of complex groove processing, poor stability, and large processing volume on the stator blade seat, and achieve the overall processing volume The effect of less, good stability, and short manufacturing cycle

Active Publication Date: 2013-03-13
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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Problems solved by technology

Using this method, the machining of the grooves on the vane seat is relatively complicated, and since double silicone rubber strips and stainless steel gaskets are placed in each groove, waist-shaped grooves need to be processed at the place where the pressure block is installed in each groove, the processing amount is relatively large, and the pressure is relatively large. The block is only fixed by a single screw, and the stability is poor

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  • Stator blade assembly method for steam turbine generator
  • Stator blade assembly method for steam turbine generator
  • Stator blade assembly method for steam turbine generator

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Embodiment Construction

[0023] In order to make the present invention more obvious and easy to understand, a preferred embodiment is described in detail as follows in conjunction with the accompanying drawings.

[0024] A steam turbine generator static blade assembly method consists of the following 4 steps:

[0025] Step 1: Combine figure 1 , Install the silicone rubber strip 4, the stainless steel plate 5 and the adjusting pad 6 at the bottom of the vane groove 7 of the stationary vane seat 2, and the thickness of the adjusting pad 6 can be fine-tuned according to the measured processing data.

[0026] Step 2: Combine figure 2 , mark 8 at the center of each stationary blade seat 2, install the first stationary blade 101 at the center mark 8, and then install the middle stationary blade 102 on both ends of the stationary blade seat 2 respectively, and install the closing static blades at both ends. For the blade 103, the closing static blades 103 at both ends need to be machined with notches and ...

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Abstract

The invention provides a stator blade assembly method for a steam turbine generator, which is characterized by including the following steps: firstly installing a silicon rubber strip, a stainless steel plate and a thickness-adjustable regulation gasket in a groove bottom of a stator blade seat, making a mark in the center position of each section of stator blade seat, installing a first stator blade in the central mark place, respectively installing a middle stator blade on each of the two end faces of the stator blade seat, installing closing stator blades at the positions close to the two end faces, installing an installation pressing block on the closing stator blade in the groove bottom, and repeating the above steps until all stator blades in a groove are assembled. The method provided by the invention overcomes the disadvantages of the prior art, the stator blades are convenient to dismount, the overall machining amount is small, and the installation stability is high.

Description

technical field [0001] The invention relates to a method for assembling a stationary blade of a steam turbine generator, and belongs to the technical field of steam turbine generators. Background technique [0002] The multi-stage stationary blade seat has been widely used in large and medium-sized steam turbine generators, and its stationary blade assembly methods are also diversified. There are mainly two original stationary blade assembly methods: [0003] The first is by welding. First, the inner ring and the outer ring are machined to form the grooves where the blades need to be installed, and then the two ends of the machined blades are clamped into the grooves of the inner and outer rings respectively, and welded with the inner and outer rings to fix them, and finally they are installed. The stationary blade ring of the stationary blade is installed in the groove on the stationary blade seat, and is fixed by the ocean. By adopting this method, the inner ring and the...

Claims

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Application Information

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IPC IPC(8): F01D9/02B23P11/00
Inventor 桑武斌朱仲贤胡建波干保良阮绵照邓鸿权
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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