CN106932486B

CN106932486B - Signal transmission device of rotary ultrasonic probe

Info

Publication number: CN106932486B
Application number: CN201511020464.XA
Authority: CN
Inventors: 谢航; 周礼峰; 朱性利; 丁冬平; 蔡家藩; 刘鑫; 刘波; 谢华兵; 陈增武
Original assignee: Research Institute of Nuclear Power Operation; China Nuclear Power Operation Technology Corp Ltd
Current assignee: Research Institute of Nuclear Power Operation; China Nuclear Power Operation Technology Corp Ltd
Priority date: 2015-12-30
Filing date: 2015-12-30
Publication date: 2023-10-20
Anticipated expiration: 2035-12-30
Also published as: CN106932486A

Abstract

A signal transmission device of a rotary ultrasonic probe comprises a base 1, a bearing A2, a bearing B3, a mandrel 4, a first lead 5, a second lead 6, a third lead 7, a fourth lead 8, a clamping ring 9 and a shaft shoulder 10. The inner sides of the bearing A2 and the bearing B3 are sleeved on the mandrel 4 and are in clearance fit with the mandrel 4, and the outer rings of the bearing A2 and the bearing B3 are sleeved on the inner side of the base 1 and are in transition fit with the base 1. The base 1 and the mandrel 4 are manufactured from an insulating material. The bearing A2 and the bearing B3 adopt conductive bearings. The first, second, third, fourth, and outer portions of the wires are free of insulating layers. The base 1 is mounted to an ultrasonic inspection apparatus and connected to an ultrasonic meter through a signal cable.

Description

Signal transmission device of rotary ultrasonic probe

Technical Field

The invention belongs to the field of signal transmission, and particularly relates to a signal transmission device of a rotary ultrasonic probe.

Background

In ultrasonic nondestructive testing in nuclear power or other industries, ultrasonic inspection of pipes and bars is an important inspection item. In particular in the nuclear power field, fuel assemblies, control bundles, heat transfer tubes, main pipes, and other pipes require performing ultrasonic non-destructive testing during manufacture and use according to relevant specifications.

In the case of automated ultrasonic nondestructive inspection of these tubes or rods, the method generally employed is that the tube or rod is fed axially while the ultrasonic probe is rotated about the tube or rod. The invention solves the signal transmission problem of the ultrasonic probe in the rotating state.

Disclosure of Invention

The invention aims to provide a signal transmission device of a rotary ultrasonic probe, which improves detection efficiency.

The technical scheme of the invention is as follows: a signal transmission device of a rotary ultrasonic probe comprises a base, a bearing A, a bearing B, a mandrel, a first wire, a second wire, a third wire, a fourth wire, a clamping ring and a shaft shoulder; the inner sides of the bearing A and the bearing B are sleeved on the mandrel and are in clearance fit with the mandrel, and the outer rings of the bearing A and the bearing B are sleeved on the inner sides of the base and are in transition fit with the base; the first lead is led out from the base after being wound for one circle along the outermost side of the bottom of the bearing hole of the bearing A, and simultaneously, the outer ring of the bearing A axially compresses the bearing A; the second wire is wound along the wire groove on the mandrel for one circle and then is connected with one wire of the probe, and meanwhile, the inner ring of the bearing A radially compresses the second wire; the third lead is led out from the base after being wound for one circle from the outermost side of the bottom of the bearing hole on the bearing B, and the outer ring of the bearing B axially compresses the third lead; the fourth wire is wound along the wire groove on the mandrel for one circle and then is connected with the other wire of the probe, meanwhile, the inner ring of the bearing B radially compresses the wire, and the clamping ring and the shaft shoulder are respectively positioned at the left side of the bearing A and the right side of the bearing B, so that the axial fixation and compression of the bearing and the wire are ensured; the base is mounted on the ultrasonic inspection device and connected to the ultrasonic instrument through a signal cable.

The base and the mandrel are processed by adopting insulating materials.

The bearing A and the bearing B adopt conductive bearings.

The first wire, the second wire, the third wire and the fourth wire are provided with no insulating layer outside.

The invention has the remarkable effects that: the ultrasonic probe has the advantages that the signal transmission of the ultrasonic probe in the rotating state can be realized, the bearing has high durability, the transmission mode of the ultrasonic probe in the rotating state has good durability and high reliability, and the ultrasonic signal transmission under the condition of high rotating speed can be realized.

Drawings

Fig. 1 is a schematic diagram of a signal transmission device of a rotary ultrasonic probe according to the present invention

In the figure: 1 base, 2 bearing A, 3 bearing B, 4 mandrel, 5 first wire, 6 second wire, 7 third wire, 8 fourth wire, 9 snap ring, 10 shaft shoulder

Detailed Description

Signal transmission device of rotary ultrasonic probe

The structure of the signal transmission device of the rotary ultrasonic probe is shown in fig. 1, and the signal transmission device comprises a base (1), a bearing A (2), a bearing B (3), a mandrel (4), a first wire (5), a second wire (6), a third wire (7), a fourth wire (8), a clamping ring (9) and a shaft shoulder (10).

The inner sides of the bearing A (2) and the bearing B (3) are sleeved on the mandrel (4) and are in clearance fit with the mandrel (4), and the outer rings of the bearing A (2) and the bearing B (3) are sleeved on the inner side of the base (1) and are in transition fit with the base (1).

The first lead (5) is led out from the base (1) after being wound for one circle along the outermost side of the bottom of the bearing hole of the bearing A (2), and simultaneously the outer ring of the bearing A (2) axially compresses the lead; the second wire (6) is wound along the wire groove on the mandrel (4) for one circle and then is connected with one wire of the probe, and meanwhile, the inner ring of the bearing A (2) radially compresses the wire; the third lead (7) is led out of the base (1) after being wound around the outermost side of the bottom of the bearing hole on the bearing B (3), and the outer ring of the bearing B (3) axially compresses the lead; the fourth wire (8) is wound along the wire groove on the mandrel (4) for one circle and then is connected with the other wire of the probe, meanwhile, the inner ring of the bearing B (3) radially compresses the wire groove, and the clamping ring (9) and the shaft shoulder (10) are respectively positioned on the left side of the bearing A (2) and the right side of the bearing B (3), so that the axial fixation and compression of the bearing and the wire are ensured.

The base (1) and the mandrel (4) are processed by adopting insulating materials. The bearing A (2) and the bearing B (3) adopt conductive bearings. The first, second, third, fourth, and outer portions of the wires are free of insulating layers.

The base (1) is mounted on the ultrasonic inspection device and is connected with the ultrasonic instrument through a signal cable.

Claims

1. A signal transmission device of a rotary ultrasonic probe, which is characterized in that: the device comprises a base (1), a bearing A (2), a bearing B (3), a mandrel (4), a first lead (5), a second lead (6), a third lead (7), a fourth lead (8), a clamping ring (9) and a shaft shoulder (10); the inner sides of the bearing A (2) and the bearing B (3) are sleeved on the mandrel (4) and are in clearance fit with the mandrel (4), and the outer rings of the bearing A (2) and the bearing B (3) are sleeved on the inner side of the base (1) and are in transition fit with the base (1); the first lead (5) is led out from the base (1) after being wound for one circle along the outermost side of the bottom of the bearing hole of the bearing A (2), and simultaneously the outer ring of the bearing A (2) axially compresses the lead; the second wire (6) is wound along the wire groove on the mandrel (4) for one circle and then is connected with one wire of the probe, and meanwhile, the inner ring of the bearing A (2) radially compresses the wire; the third lead (7) is led out of the base (1) after being wound around the outermost side of the bottom of the bearing hole on the bearing B (3), and the outer ring of the bearing B (3) axially compresses the lead; the fourth wire (8) is wound along the wire groove on the mandrel (4) for one circle and then is connected with the other wire of the probe, meanwhile, the inner ring of the bearing B (3) radially compresses the wire, and the clamping ring (9) and the shaft shoulder (10) are respectively positioned at the left side of the bearing A (2) and the right side of the bearing B (3), so that the axial fixation and compression of the bearing and the wire are ensured; the base (1) is arranged on the ultrasonic inspection device and is connected with the ultrasonic instrument through a signal cable;

the base (1) and the mandrel (4) are processed by adopting insulating materials;

the bearing A (2) and the bearing B (3) adopt conductive bearings.

2. A signal transmission device for a rotary ultrasonic probe according to claim 1, wherein: the first wire (5), the second wire (6), the third wire (7) and the fourth wire (8) are not provided with insulating layers outside.