Root positioning mechanism for T root blade profile detection of steam turbine

Abstract

The invention provides a root positioning mechanism for T root blade profile detection of a steam turbine. The problems that the root is unreliable in positioning and clamping and the detection accuracy is influenced during the existing T root blade profile detection can be solved. The root positioning mechanism comprises a profile measuring tool bottom plate, wherein a positioning bottom plate is fixedly arranged on the profile measuring tool bottom plate; a root positioning assembly is fixedly arranged on the positioning bottom plate and comprises a positioning seat and radial positioning seats; the radial positioning seats symmetrical to each other are respectively arranged at two ends of the front side of the positioning seat; the positioning seat and the two radial positioning seats are of a concave structure of which the front side is open; a T root is positioned in the concave structure, and an upper shoulder surface of the T root is positioned by the two radial positioning seats; an inner radial surface of the T blade is positioned by the positioning seat; radial root tightening mechanisms are arranged on the positioning bottom plate and the front side of the concave structure; and the inner radial surface of the T root and the positioning seat are pressed by the radial root tightening mechanisms.

Description

technical field [0001] The invention relates to the technical field of tooling for processing and detecting blades, in particular to the technical field of tooling for processing steam turbine blades, in particular to a blade root positioning mechanism for detecting the profile of a T-shaped blade root of a steam turbine. Background technique [0002] T-shaped blade root is widely used in short blades of steam turbines due to its simple structure, convenient processing, easy assembly and reliable operation. When testing the profile of T-shaped blade root steam turbine blades, T-shaped blade tooth profile and The bottom surface of the blade root is positioned and clamped, but since the working surface of the T-shaped blade root is the upper surface of the shoulder 61, see figure 1 and figure 2 Therefore, the existing positioning and clamping method has the problem of unreliable positioning and clamping, which affects the accuracy of profile detection and affects the quality...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a blade root positioning mechanism for the detection of the profile of the T-shaped blade root of the steam turbine, which can solve the problem that the positioning and clamping of the blade root is unreliable and affects the detection accuracy during the detection of the existing T-shaped blade root blade profile.

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