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Control method for a gas turbine blade forging stock geometry and testing model

A gas turbine blade and geometric dimension technology, which is applied in the direction of mechanical counter/curvature measurement, etc., can solve the problems that the actual shape of the blade cannot be accurately reflected, it is difficult to guarantee the machining allowance, and the geometric dimension is difficult to detect, so as to achieve light weight and labor-intensive operation. The effect of low strength and simple structure

Active Publication Date: 2015-03-11
CHONGQING CHANGZHENG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the blade body is complex, and the inner and outer blade surfaces are complex torsional deformation surfaces, so it is difficult to detect its geometric dimensions
There are generally two methods for detecting the size of forgings after forging: one is to use measuring tools such as calipers and rulers. Since multiple dimensions of forgings need to be measured separately, the efficiency is extremely low; at the same time, due to the particularity of its shape , this method has a large measurement error and poor measurement accuracy, and cannot accurately reflect the actual shape of the blade, and it is difficult to ensure the machining allowance; the second is to use a three-coordinate inspection machine for measurement, and its measurement accuracy meets the requirements, but its operation process is complicated and the detection time Long, low measurement efficiency, not only need high-quality testing personnel, but also need to purchase expensive three-coordinate testing machine, high testing cost

Method used

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  • Control method for a gas turbine blade forging stock geometry and testing model
  • Control method for a gas turbine blade forging stock geometry and testing model
  • Control method for a gas turbine blade forging stock geometry and testing model

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Embodiment 1, a method for controlling the geometric dimensions of a gas turbine blade forging blank, including the steps of sample making and comparative inspection, the sample making consists of the steps of section sample making, axis sample making, and sample combination;

[0049] The making of the section template includes:

[0050] The first step, in the figure 1 and figure 2 In the three-dimensional model of the blade forging blank shown, the blade is cut transversely along the set distance in the axial direction to form a image 3 The two-dimensional graphic of the transverse section, and record the coordinate origin data and the cutting position data;

[0051] The second step is to export the cross-sectional two-dimensional drawing as a CAD format file;

[0052] The third step is to divide the two-dimensional graphics of the section according to the position of the parting line in CAD, and use the part of the continuous contour line of the section on the in...

Embodiment 2

[0067] Embodiment 2, a gas turbine blade forging billet geometric dimension detection template, including a cross-section template 1, the cross-section template 1 is used for comparative detection in the width direction of the inner arc surface or outer arc surface of the set position on the blade length, and is characterized in that, There are multiple cross-section templates 1, and multiple cross-section templates 1 are used to compare and detect the lateral contours of multiple set positions on the same arc surface of the blade. Multiple cross-section templates 1 are connected in series by the same axis template 2 to form a fishbone shape. The axis template 2 is used for comparative detection of the longitudinal profile on the arc surface of the blade corresponding to the section template 1; the comparative detection edges on the section template 1 and the axis template 2 are in the shape of a blade.

[0068] The axis template 2 is formed with a longitudinal positioning stru...

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Abstract

The invention discloses a gas turbine blade geometry forging stock control methods and a testing model. The method includes the model of production and specific inspection, the model produced by the cross-sectional model making, model making and model axis combinations, axial cross-sectional model making production model are by cutaway model of the blade-shaped three-dimensional model of two-dimensional graphics, the graphics were produced by two-dimensional cross-sectional axis model and model both inside and outside the arc, and then combined to form inside and outside the arc than the fixed model with a model than by combining visual and feeler the methods were inside and outside the arc blades comparison checks. Model by a number of cross-section than the production model by forming an axis model fishbone-shaped cross-section and the axis of the model than the model on the side blade-shaped formation. The beneficial effect of the invention is a method which can detect the test results obtained in several parts of the blade, simple operation, high accuracy and high detection efficiency; check the model structure is simple, low labor intensity is detected, the detection of low skill requirements.

Description

technical field [0001] The invention relates to a blade of a gas turbine, in particular to a method for controlling the geometric dimension of a forging billet of a gas turbine blade and a test sample. Background technique [0002] A gas turbine is a rotary power machine that uses continuously flowing gas as a working medium to convert heat energy into mechanical work. As a kind of advanced and complex power machinery equipment, gas turbine is a typical high-tech intensive product. It is mainly used in aviation, ships, vehicles and power generation mainly including military warships. A gas turbine consists of a compressor, a combustion chamber, and a gas turbine. In addition to the combustion chamber of the gas turbine, there are a large number of blade components in the compressor and gas turbine. The blade plays the role of gas compression and expansion and power generation in the gas turbine, so it is an important component of the gas turbine. At the same time, blades...

Claims

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Application Information

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IPC IPC(8): G01B5/20
Inventor 何盛勇曹东升
Owner CHONGQING CHANGZHENG HEAVY IND
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