Assembling and machining process for steam cabinet of steam turbine and nozzle group

Abstract

The invention provides an assembling and machining process for a steam cabinet of a steam turbine and a nozzle group. A jig tool is arranged for the assembling and machining process for the steam cabinet of the steam turbine and the nozzle group. Concentric circular bump and circular shrinkage pool are respectively arranged on both sides of the jig tool. Assembling holes of the steam cabinet of the steam turbine and the nozzle group are respectively machined by using the circular bump and circular shrinkage pool as positioning reference, so that the steam cabinet of the steam turbine and the nozzle group can be precisely positioned in the vertical and horizontal directions. Therefore, the assembling holes of the steam cabinet of the steam turbine and the nozzle group are consistent in position, so that the quality and machining precision of assembly of the steam cabinet of the steam turbine and the nozzle group can be ensured. According to the method in the process, the assembling holes in the steam cabinet of the steam turbine and the nozzle group can be conveniently and precisely machined, so that the assembling requirement of the steam cabinet of the steam turbine and the nozzle group can be satisfied.

Description

technical field [0001] The invention relates to the field of steam turbine production, in particular to a process for assembling and processing steam chambers and nozzle groups of the steam turbine. Background technique [0002] The steam turbine is a rotary power machine that converts the energy of steam into mechanical work. After the steam from the boiler enters the steam turbine, it passes through a series of annular nozzles and movable blades in sequence to convert the thermal energy of the steam into the mechanical energy of the rotation of the turbine rotor. In the steam turbine, the energy of steam is converted in different ways, thus constituting the steam turbine with different working principles. It consists of two aspects: the rotating part and the stationary part. The rotor includes the main shaft, impeller, moving blade and coupling, etc., and the stator includes the steam inlet part, the cylinder, the diaphragm and the stationary blade cascade, the steam seal...

AI Technical Summary

Problems solved by technology

[0004] The steam chamber and the nozzle group of the steam turbine are often processed separately, that is, the steam chamber, the through holes on the nozzle group, and the blind holes are all processed separately, and there is no unified positioning reference between the two. The number of assembly holes is large and the pitch circle size is sometimes not uniform. In this way, in the process of assembling the steam chamber and the nozzle group, the positions of the threaded holes often do not correspond, resulting in the problem that the steam chamber and the nozzle group cannot be assembled and installed.

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