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Radiographic inspection positioning device for large-curvature hollow blades

A technology of hollow blade and radiographic inspection, applied in the field of radiographic inspection, 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 quality of inspection and enhancing the contrast of the image

Inactive Publication Date: 2015-02-18
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Radiographic inspection positioning device for large-curvature hollow blades
  • Radiographic inspection positioning device for large-curvature hollow blades
  • Radiographic inspection positioning device for large-curvature hollow blades

Examples

Experimental program
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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 the cylindrical pin 5 and the 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 ...

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Abstract

The invention relates to a radiographic inspection positioning device for large-curvature hollow blades, belonging to the technical field of radiographic inspection. The device comprises a support, two positioning blocks and a limiting pin, wherein the clamping ends of the positioning blocks are symmetrically arranged on the support; the support comprises two profiles of different angles; the limiting pin is arranged at one end, between the two positioning blocks, at the included angle end of the profiles of the support; and the clamping end faces of the two positioning blocks are connected with blade tenons in a matched mode. According to the device disclosed by the invention, the radiographic inspection angles of the blades can be accurately and rapidly positioned, a phenomenon that negative film imaging is influenced because the inner cavity structures of the blades block one another is avoided, an image contrast ratio is enhanced, and the detection quality is guaranteed. The inspection of residual cores of inner cavities of the large-curvature hollow blades is needed by technological development, and immeasurable social benefits are brought.

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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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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