阅读说明：本技术 一种挂钩式导叶片和轨道式导叶片拂配及检测方法 (Hook type guide blade and rail type guide blade fitting and detecting method ) 是由 孙珂 张锡成 刘学斌 王丹 穆苍莉 李变弟 平丽丽 于 2020-04-20 设计创作，主要内容包括：一种挂钩式导叶片和轨道式导叶片拂配及检测方法,它涉及一种导叶片拂配及检测方法,具体涉及一种挂钩式导叶片和轨道式导叶片拂配及检测方法。本发明为了解决。本发明的具体步骤为：固定汽轮机气缸隔板的内环和外环；在上隔板和下隔板的内环和外环上画出分度点；对第一只叶片内径向面加厚,然后在其内径向面处放置定位块将第一只叶片固定；依次装入叶片,边装配边修磨内径向面；半圈叶片装配完成后测量叶片节圆位置；根据节圆位置、节圆半径画出节圆的圆心；根据叶片结构制作天地尺寸中分面中心测量起点辅助工装,引出内径向平面测量线位置并采用鱼线测量定位,去除人为误差。本发明属于汽轮机设备领域。(A hook type guide blade and rail type guide blade brushing and detecting method relates to a guide blade brushing and detecting method, in particular to a hook type guide blade and rail type guide blade brushing and detecting method. The invention aims to solve the problem. The method comprises the following specific steps: fixing an inner ring and an outer ring of a steam turbine cylinder partition plate; drawing indexing points on the inner ring and the outer ring of the upper partition plate and the lower partition plate; thickening the inner radial surface of the first blade, and then placing a positioning block on the inner radial surface of the first blade to fix the first blade; sequentially loading the blades, and polishing the inner radial surface while assembling; measuring the pitch circle position of the blade after the semi-circle blade is assembled; drawing the circle center of the pitch circle according to the position and the radius of the pitch circle; and manufacturing an auxiliary tool for the central measurement starting point of the middle facet of the world size according to the blade structure, leading out the position of the measurement line of the inner radial plane, and measuring and positioning by adopting a fish line to remove human errors. The invention belongs to the field of steam turbine equipment.)

1. A hook type guide blade and rail type guide blade brushing and detecting method is characterized in that: the method for matching and detecting the hook type guide blade and the rail type guide blade comprises the following specific steps:

firstly, fixing an inner ring and an outer ring of a steam turbine cylinder partition plate;

drawing indexing points on the inner ring and the outer ring of the upper partition plate and the lower partition plate;

step three, thickening the inner radial surface of the first blade, and then placing a positioning block on the inner radial surface of the first blade to fix the first blade;

step four, sequentially loading the blades, and polishing the inner radial surface while assembling;

measuring the pitch circle position of the blade after the half-circle blade is assembled;

drawing the circle center of the pitch circle according to the position and the radius of the pitch circle;

and seventhly, manufacturing an auxiliary tool for the measuring starting point of the center of the middle section of the world size according to the blade structure, leading out the measuring line position of the inner radial plane, and measuring and positioning by adopting a fish line to remove human errors.

2. The method for the fitting and detecting of the hook type guide blade and the rail type guide blade according to claim 1, wherein: in the fourth step, the radial straight surface clearance between two adjacent blades is less than or equal to 0.04mm, and the inclined surface clearance is less than or equal to 0.10 mm.

3. The method for the fitting and detecting of the hook type guide blade and the rail type guide blade according to claim 1, wherein: and in the fourth step, a 0.01-0.04 feeler gauge is placed between the gaps of the radial surfaces of the adjacent blades, and the jamming between the radial surfaces of the blades when the feeler gauge is drawn out is taken as a judgment standard.

4. The method for the fitting and detecting of the hook type guide blade and the rail type guide blade according to claim 1, wherein: in the third step, the radial surface in the first blade is thickened by 0.50 mm.

5. The method for the fitting and detecting of the hook type guide blade and the rail type guide blade according to claim 1, wherein: and in the third step, after the thickening of the inner radial surface of the first blade is finished, 3.31mm of line pressing is carried out on the inner radial surface of the first blade.

Technical Field

The invention relates to a guide vane brushing and detecting method, in particular to a hook type guide vane and a rail type guide vane brushing and detecting method, and belongs to the field of steam turbine equipment.

Background

The guide vane of the steam turbine rotor generally has two structural forms, one is a hook type guide vane, and the other is a track type guide vane.

Disclosure of Invention

The invention provides a hook type guide blade and rail type guide blade fitting and detecting method, aiming at solving the problems that the accuracy of the existing hook type guide blade and rail type guide blade fitting and detecting method is low, and the overall safe operation of steam turbine equipment is influenced.

The technical scheme adopted by the invention for solving the problems is as follows: the method comprises the following specific steps:

firstly, fixing an inner ring and an outer ring of a steam turbine cylinder partition plate;

drawing indexing points on the inner ring and the outer ring of the upper partition plate and the lower partition plate;

step three, thickening the inner radial surface of the first blade, and then placing a positioning block on the inner radial surface of the first blade to fix the first blade;

step four, sequentially loading the blades, and polishing the inner radial surface while assembling;

measuring the pitch circle position of the blade after the half-circle blade is assembled;

drawing the circle center of the pitch circle according to the position and the radius of the pitch circle;

and seventhly, manufacturing an auxiliary tool for the measuring starting point of the center of the middle section of the world size according to the blade structure, leading out the measuring line position of the inner radial plane, and measuring and positioning by adopting a fish line to remove human errors.

Furthermore, the clearance between the radial straight surfaces in the four adjacent blades in the step is less than or equal to 0.04mm, and the clearance between the inclined surfaces is less than or equal to 0.10 mm.

Furthermore, in the fourth step, a feeler gauge of 0.01-0.04 is placed between the gaps of the radial surfaces of the adjacent blades, and the jamming between the radial surfaces of the blades when the feeler gauge is drawn out is taken as a judgment standard.

Furthermore, the radial surface in the first blade in the third step is thickened by 0.50 mm.

Furthermore, after the thickening of the inner radial surface of the first blade in the third step is finished, 3.31mm of line pressing is carried out on the inner radial surface of the first blade.

The invention has the beneficial effects that: the invention improves the precision of the matching and detection of the hook type guide blade and the guide rail type guide blade and avoids the operation fault of the steam turbine caused by lower precision of the matching of the guide blades.

Drawings

Fig. 1 is a schematic structural view of a guide vane.

Detailed Description