Turbine blade crack nondestructive testing device

Abstract

The invention discloses a nondestructive testing device for cracks of turbine blades. The device is integrally and symmetrically arranged and comprises a clamping plate, a supporting device, a tension spring, a connecting bolt, a movable hinge and a composite probe, the two sides of the supporting device are movably connected with the two clamping plates through corresponding movable hinges respectively, the two sides of the supporting device are further movably connected with the two clamping plates through corresponding tension springs respectively, a composite probe is arranged below the supporting device, and the two sides of the composite probe are movably connected with the two clamping plates through corresponding connecting bolts respectively; the turbine blade is placed on the lower surface of the composite probe, the supporting device presses downwards, the relative positions of the clamping plate, the supporting device and the composite probe change, the composite probe elastically deforms, the lower surface of the composite probe is tightly attached to the surface of the turbine blade, and nondestructive testing on the surface of the turbine blade is achieved through operation of the composite probe. The nondestructive testing efficiency of the turbine blade is improved, and the method has certain engineering significance.

Description

technical field [0001] The invention relates to a blade nondestructive detection device in the field of blade detection, in particular to a turbine blade crack nondestructive detection device. Background technique [0002] Before the turbine blade detection probe is used, it is necessary to bond the magnetostrictive tape to the tip of the turbine blade. In the case of the detection of the turbine blade, it is often to detect a group of turbine blades, so that the bonding resigns the work of the telescopic tape. The amount is huge, and the dismantling of the strip also brings a huge workload to the inspection of turbine blades, which makes the bonding method have certain shortcomings in the detection and protection of blades. [0003] Due to the special curve of the turbine blades, the magnetostrictive strips are often fixed by bonding, which is a hard link, and the bonded magnetostrictive strips cannot be reused. The detection of turbine blades is often a group of turbine bl...

AI Technical Summary

Problems solved by technology

[0002] Before the turbine blade detection probe is used, it is necessary to bond the magnetostrictive tape to the tip of the turbine blade. In the case of the detection of the turbine blade, it is often to detect a group of turbine blades, so that the bonding resigns the work of the telescopic tape. The amount is huge, and the dismantling of the strip also brings a huge workload to the detection of turbine blades, which makes the bonding method have certain disadvantages in the detection and protection of blades

[0003] Due to the special curve of the turbine blades, the magnetostrictive strips are often fixed by bonding, which is a hard link, and the bonded magnetostrictive strips cannot be reused. The detection of turbine blades is often a group of turbine blades. blade, rather than a turbine blade, making the NDT workload of turbine blades huge

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