CN102519333A

CN102519333A - Measuring tool for pitch of integral shroud and lug boss of blade

Info

Publication number: CN102519333A
Application number: CN2011104519894A
Authority: CN
Inventors: 姜龙网; 董欣欣; 孙静雅; 徐大懋
Original assignee: Wuxi Turbine Blade Co Ltd
Current assignee: Wuxi Turbine Blade Co Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-06-27

Abstract

The invention provides a measuring tool for the pitch of an integral shroud and a lug boss of a blade. The measuring tool solves the problem of inaccuracy of pitch sample plate detection information after the integral shroud twisting deformation in the prior art. The operation is simple, and the detection information accuracy can be ensured. The measuring tool comprises an inner arch pitch sample plate and a back arch pitch sample plate, wherein the detection surface angle of the inner arch pitch sample plate is the same as the work surface angle in the integral shroud of the blade, and the detection surface angle of the back arch pitch sample plate and the work surface angle of the integral shroud of the blade are identical and are respectively designed according to certain enveloping values. The measuring tool is characterized in that connecting surfaces of the inner arch pitch sample plate and the back arch pitch sample plate are connected into a whole in a clamping way, and gaps being 1mm to 2mm are respectively arranged between the two sides of the inner arch pitch sample plate and the back arch pitch sample plate and guide blocks arranged at two sides of a framework.

Description

The survey instrument that is used for blade shroud and boss pitch

Technical field

The present invention relates to the technical field of the survey instrument of blade detection, be specially the survey instrument that is used for blade shroud and boss pitch.

Background technology

Blade is carrying out integral shroud, when the boss pitch detects, need integral shroud, boss pitch templet cooperated with framework and measure.Existing integral shroud, boss pitch templet are divided into inner arc pitch templet 1, back of the body arc pitch templet 2; See Fig. 1; It is provided with card base 12 respectively and is located by connecting with framework both sides guide block 10,11; And respectively by the design of certain envelope value, through measure blade shroud or boss inner working face, back of the body workplace with inner arc pitch templet 1, carry on the back the gap between arc pitch templet 2 detection faces, judge whether integral shroud, boss pitch size qualified.Its weak point is: when blade shroud windup-degree A is out of shape, owing to inner arc pitch templet 1, back of the body arc pitch templet 2 stationkeeping, cause obtaining the detected value L ' bigger with respect to actual value L, see Fig. 2, therefore can not obtain to detect accurately information; And because the integral shroud torsional deflection after the blade mechanism processing is inevitable, so existing detection mode and method can't satisfy the requirement of user to the pitch accuracy of detection.

Summary of the invention

To the problems referred to above, the invention provides the survey instrument that is used for blade shroud and boss pitch, it solves existing integral shroud torsional deflection back pitch model and detects the inaccurate problem of information, and it is simple to operate, can guarantee the accuracy of the information that detects.

The survey instrument that is used for blade shroud and boss pitch; Its technical scheme is such: it comprises inner arc pitch templet, back of the body arc pitch templet; The detection faces angle of said inner arc pitch templet is consistent with blade shroud inner working face angle; The detection faces angle of said back of the body arc pitch templet is consistent with blade shroud back of the body workplace angle; And respectively by certain envelope value design, it is characterized in that: said inner arc pitch templet becomes an integral body with the joint face clamping of back of the body arc pitch templet, and the both sides of said inner arc pitch templet, back of the body arc pitch templet are provided with the gap of 1mm ~ 2mm respectively with framework both sides guide block.

It is further characterized in that: the joint face of said inner arc pitch templet and back of the body arc pitch templet is through the clamping of card base structure, and said inner arc pitch templet connects into as a whole with back of the body arc pitch templet.

After adopting said structure of the present invention; Because the inner arc pitch templet becomes an integral body with the joint face clamping of back of the body arc pitch templet; And the both sides of inner arc pitch templet, back of the body arc pitch templet are provided with the gap of 1mm ~ 2mm respectively with framework both sides guide block; Inner arc pitch templet and back of the body arc pitch templet can carry out the adjustment of corresponding angle, position simultaneously along with the distortion of blade shroud position, have guaranteed that blade shroud and boss pitch detect the accuracy of information, and it solves existing integral shroud torsional deflection back pitch model and detects the inaccurate problem of information; It is simple to operate, can guarantee the accuracy of the information that detects.

Description of drawings

Fig. 1 is the existing front view structural representation that is used for the survey instrument of blade shroud and boss pitch;

Fig. 2 is the measuring error schematic diagram of Fig. 1;

Fig. 3 is a front view structural representation of the present invention;

Fig. 4 is the A-A sectional structure schematic cross-sectional views of Fig. 3.

Embodiment

See Fig. 3, Fig. 4; It comprises inner arc pitch templet 1, back of the body arc pitch templet 2, and the two sides 8,9 of inner arc pitch templet 1 and back of the body arc pitch templet 2 are provided with the gap of 1mm ~ 2mm respectively with framework both sides guide block 10,11, and inner arc pitch templet 1 detection faces 5 angles are consistent with blade 3 integral shroud inner working faces 6 angles; Detection faces 4 angles of back of the body arc pitch templet 2 are consistent with blade 3 integral shrouds back of the body workplace 7 angles; And respectively by certain envelope value design, inner arc pitch templet 1 passes through 12 clampings of card base structure with back of the body arc pitch templet 2 joint faces, among Fig. 4; Inner arc pitch templet 1 and back of the body arc pitch templet 2 detection faces are provided with chamfering α, and keep detection faces thickness D.

Its principle of work is following: when using the present invention to detect blade shroud or boss pitch; On the measurement gear of framework; Inner arc pitch templet 1 and back of the body arc pitch templet 2 is inboard from framework respectively, dorsal part pushes; And guarantee two models through 12 clampings of card base structure, the position and the angle of adjustment inner arc pitch templet 1 and back of the body arc pitch templet 2 make the detection faces 5 of inner arc pitch templet 1 and blade 3 integral shroud inner working faces 6 paste the jail; Measure the gap between back of the body arc pitch templet 2 detection faces 7 and blade 3 integral shrouds or the boss back of the body arc workplace 4, accomplish the surveying work of blade shroud, boss.

Claims

1. the survey instrument that is used for blade shroud and boss pitch; It comprises inner arc pitch templet, back of the body arc pitch templet; The detection faces angle of said inner arc pitch templet is consistent with blade shroud inner working face angle; The detection faces angle of said back of the body arc pitch templet is consistent with blade shroud back of the body workplace angle; And respectively by certain envelope value design, it is characterized in that: said inner arc pitch templet becomes an integral body with the joint face clamping of back of the body arc pitch templet, and the both sides of said inner arc pitch templet, back of the body arc pitch templet are provided with the gap of 1mm ~ 2mm respectively with framework both sides guide block.

2. the survey instrument that is used for blade shroud and boss pitch according to claim 1; It is characterized in that: the joint face of said inner arc pitch templet and back of the body arc pitch templet is through the clamping of card base structure, and said inner arc pitch templet connects into as a whole with back of the body arc pitch templet.