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A radiographic detection and positioning device for large-curvature hollow blades

A hollow blade, ray detection technology, applied in the field of ray detection, can solve the problems of inability to distinguish the quality of the inner cavity of the blade, image occlusion, etc., and achieve the effect of ensuring the detection quality and enhancing the image contrast.

Inactive Publication Date: 2017-11-28
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for hollow blades with large curvature, the quality of the inner cavity of the blade cannot be distinguished due to the occlusion of the image caused by the large curvature of the blade during radiographic inspection.

Method used

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  • A radiographic detection and positioning device for large-curvature hollow blades
  • A radiographic detection and positioning device for large-curvature hollow blades
  • A radiographic detection and positioning device for large-curvature hollow blades

Examples

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Embodiment

[0014] Example: such as Figure 1-Figure 3 As shown, the present invention includes a support 1, a positioning block I2, a positioning block II3 and a limit pin 4. The clamping ends of the positioning block I2 and the positioning block II3 are symmetrically placed on the support 1, and are respectively passed through a cylindrical pin 5 and a The hexagonal socket head screw 6 is fixed, the support 1 has two profiles with different angles, and one end between the two positioning blocks I2 and the positioning block II3 on ​​the angled end of the support 1 is provided with a limit pin 4, two The clamping end surface of the positioning block cooperates with the tenon of the blade.

[0015] Such as figure 2 As shown, the profiles I8 and II9 are respectively parallel to the axis L of the blade cavity, and the vertical plane M of the profile containing the axis L of the blade cavity does not intersect any cavity of the blade body. Profile I8 is used to detect cavities 701 and 702 ...

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Abstract

The invention relates to a radiation detection and positioning device for hollow blades with large curvature, and belongs to the technical field of radiation detection. It includes a support, a positioning block and a limit pin. There are two positioning blocks, and the clamping end is symmetrically placed on the support. The support has two profiles with different angles. A limit pin is arranged at one end between the two positioning blocks, and the clamping end surfaces of the two positioning blocks are matched with the tenons of the blades. The invention can accurately and quickly locate the blade ray detection angle, prevent the inner cavity structures of the blades from blocking each other and affect negative film imaging, enhance the image contrast, and ensure the detection quality. Therefore, the inspection of the residual core of the large-curvature hollow blade cavity is the need of technological development and will bring immeasurable social benefits.

Description

technical field [0001] The invention belongs to the technical field of radiation detection. In particular, it relates to a radiation detection and positioning device for hollow blades with large curvature. Background technique [0002] In recent years, the manufacturing technology of hollow blades has been continuously improved, and the inner cavity structure has become more and more complex, and the curvature of the blades has also become larger and larger. When casting hollow blades, ceramic cores are used. After the blades are poured, chemical reactions are used to remove the cores to form the internal cavity of the blades. However, when the blade core is not completely removed, the core remaining in the blade cavity will block the cooling channel, and the residual core will chemically react with the blade at high temperature, causing aircraft safety accidents. At present, the method of checking the residual core mainly adopts the method of filling metal powder to impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04
Inventor 张孝玲张娟王海亮刘海强段占峰
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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