Steam turbine steam guiding control device

Abstract

The invention relates to a steam turbine steam guiding control device that comprises a semicircular guide body and a blade assembly, wherein the blade assembly is inserted into an installation groovein the end face of the guide body, and the two ends of the blade assembly are fixed to the guide body through taper pins. The guide body comprises three steam inlets formed in the circumferential direction of the guide body at intervals, and three steam outlet grooves that are formed in the installation groove at intervals, wherein the steam inlets communicate with the corresponding steam outlet grooves through steam channels in the guide body correspondingly, and the blade assembly comprises a first blade set, a second blade set and a third blade set which bear steam flowing into the three steam outlet grooves correspondingly so as to guide and expand to do work. According to the steam turbine steam guiding control device, the steam inlets are communicated with the corresponding steam outlet grooves through the steam channels, and therefore the amount of steam in different areas of the guide body can be controlled; and the blade assembly is inserted into the end surface of the guide body, so that the blade assembly and the guide body can be detachably mounted.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a steam guiding control device for a steam turbine. Background technique [0002] The steam turbine is the main equipment of the thermal power plant. The steam guiding control device is the initial part of the flow part and is also one of the important components of the steam turbine. It plays a very critical role in the work efficiency of the main steam in the cylinder. [0003] In the prior art, the structure of the steam guiding control device is complex, the effect is not good, and it is installed with the blades in the form of welding after assembly. This installation form will cause the following problems: 1. Deformation will occur during the welding process and affect the processing accuracy 2. The processing standard changes after welding deformation, which increases the difficulty of processing; 3. After the blade is damaged, it can only be replaced together with ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the structure of the steam guiding control device is complex, the effect is not good, and it is installed with the blades in the form of welding after assembly, which will cause the following problems: 1. Deformation will occur during the welding process and affect the processing accuracy ; 2. After the welding deformation, the processing standard changes, which increases the difficulty of processing; 3. After the blade is damaged, it can only be replaced together with the steam guiding control device, which increases the maintenance time and cost

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