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An ultrasonic inspection device for nuclear reactor pressure vessel joint intersection surface

A pressure vessel, ultrasonic inspection technology, used in nuclear reactor monitoring, reactors, nuclear engineering, etc., can solve the problem of inability to use a fixed motion trajectory scanning method, and achieve the effect of reduced external size, constant size, and easy installation

Active Publication Date: 2017-11-28
CHINA NUCLEAR POWER OPERATION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is impossible to use a scanning method with a fixed trajectory, so a device must be designed to realize that the ultrasonic probe is always in close contact with the intersection surface of the connecting pipe and ensures a positive pressure state

Method used

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  • An ultrasonic inspection device for nuclear reactor pressure vessel joint intersection surface
  • An ultrasonic inspection device for nuclear reactor pressure vessel joint intersection surface
  • An ultrasonic inspection device for nuclear reactor pressure vessel joint intersection surface

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Such as figure 1 , figure 2 As shown, an ultrasonic inspection device for the junction surface of nuclear reactor pressure vessel includes a driving cylinder 1, a connecting rod 3, a retractable probe holder 5, a scanning arm 6 and a fixed probe holder 8, wherein, The lower end of the driving cylinder part 1 is movably connected with the ends of the two symmetrically distributed scanning arms 6 through the hinge C7, the driving part in the middle part of the driving cylinder part 1 is movably connected with one end of the connecting rod 3 through the hinge A2, and the other end of the connecting rod 3 is through the hinge B4 It is movably connected with the scanning arm 6; the drive cylinder 1 drives the two symmetrically distributed scanning arms 6 to shrink or expand through the connecting rod 3; Box 9, wherein a motor 18 and a reduction box 9 are fixedly installed on the end of the guide rail 14 away from the hinge C7, the lead screw 11 is installed on the guide ra...

Embodiment 2

[0022] Such as image 3 As shown, an ultrasonic inspection device for a nuclear reactor pressure vessel joint intersection surface includes a driving cylinder 1, a connecting rod 3, a scanning arm 6, and a probe holder with a support rod structure, wherein the lower end of the driving cylinder 1 passes through the hinge C7 is movably connected with the ends of two symmetrically distributed scanning arms 6, the driving part in the middle of the driving cylinder part 1 is movably connected with one end of the connecting rod 3 through the hinge A2, and the other end of the connecting rod 3 is movably connected with the scanning arm 6 through the hinge B4 ; The drive cylinder 1 drives two symmetrically distributed scanning arms 6 to contract or expand through the connecting rod 3; 14 One end away from the hinge C7 is fixedly installed with a motor 18 and a reduction box 9. The screw 11 is installed on the guide rail 14 in parallel with the bearing seat B15 through the bearing seat...

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Abstract

The invention specifically relates to an ultrasonic detection apparatus for an intersecting surface of adapter tubes of a nuclear reactor pressure vessel, which belongs to the technical field of ultrasonic nondestructive testing of the intersecting surface of adapter tubes of a pressure vessel in a nuclear power station. The ultrasonic detection apparatus comprises a driving cylinder member, connecting rods and scanning arms, wherein the lower end of the driving cylinder member is movably connected with the ends of the two symmetrically distributed scanning arms; a driving part located at the middle part of the driving cylinder member is movably connected with the scanning arms through the connecting rods; a driving cylinder can drives the two symmetrically distributed scanning arms to contract or stretch via the connecting rods; probe holders capable of axially moving along the scanning arms are arranged on the scanning arms; and at least one probe holder arranged on the two scanning arms can carry out telescopic motion. The ultrasonic detection apparatus can self-adaptively stretch out and draw back according to changes of the shape of a to-be-detected surface, always applies pressure on probes and guarantees fitting between the probes and the to-be-detected surface.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic non-destructive testing of the joint intersection surface of a pressure vessel of a nuclear power plant, and in particular relates to an ultrasonic inspection device for the joint intersection surface of a nuclear reactor pressure vessel. Background technique [0002] The joints of the water inlet and outlet pipes in the pressure vessel and the cylinder body of the pressure vessel form an intersection surface. Because this area has been in a state of high temperature and high pressure for a long time, and there is a cooling medium with high radioactivity flowing through it, if leakage occurs in this area, serious safety accidents will occur, so it is necessary to regularly check the welding seam of the intersection surface of the joint. It is a common and important means to use automatic equipment to carry out ultrasonic inspection of welded seams of connecting pipes. In the process of impleme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/017
CPCY02E30/30
Inventor 王龙王俊涛张益成辛露张志义尹鹏刘文超徐秋旻
Owner CHINA NUCLEAR POWER OPERATION TECH
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