Ultrasonic detection turbine rotating head device

Abstract

The ultrasonic detection turbine rotating head device comprises a rotating head shell, a drainage block is embedded in the inner wall of the rotating head shell, and the tail end of the rotating head shell is in threaded connection with a pipe joint and is communicated with a water path; a focusing probe is arranged in the rotating head shell, the bottom of the focusing probe is in threaded connection with a coaxial line connection circuit, and the front end of the focusing probe clings to the diversion block; a bearing is arranged on the inner wall of the front end of the rotating head shell, a hollow sleeve rod is arranged on the inner side of the bearing, a 45-degree reflecting mirror is embedded in the hollow sleeve rod, and the hollow sleeve rod is provided with a water flow outlet corresponding to a reflecting mirror face of the 45-degree reflecting mirror.

Description

Technical Field

[0001] The present invention relates to a rotary ultrasonic detection technology and its use equipment, in particular to an ultrasonic detection turbine rotary head device. Background Art

[0002] In the fields of electricity, chemical industry, etc., when repairing condensers and heat exchangers, it is necessary to inspect the heat exchange tube bundle to confirm whether the pipes are damaged, the degree of corrosion, the degree of wall thickness reduction, and whether the dimensions meet the use requirements to ensure stable operation of the system.

[0003] The Internal Rotary Inspection System (IRIS) uses a water-immersion focused probe to generate high-frequency pulsed ultrasonic waves, which are then refracted by a 45-degree acoustic reflector to form a beam perpendicular to the pipe wall. After the ultrasonic waves reflect off the inner and outer walls of the pipe, the system calculates the time and amplitude differences between the echoes from the inner and outer walls to determine the pipe's inner and outer diameters and wall thickness.

[0004] It is very necessary to provide a rotary joint device corresponding to the rotary ultrasonic testing inside the pipe. When testing inside the pipe, after the water jet rotary head and reflector elements are integrated, the radial size is smaller than the pipe diameter. After being connected and assembled with the focusing probe, the relative position is fixed, and it is easy to move inside the pipe, which effectively improves the efficiency of the rotary ultrasonic testing inside the pipe and ensures the accuracy of the test results.

[0005] Therefore, it is necessary to provide an ultrasonic detection turbine rotating head device to achieve the above purpose. Summary of the Invention

[0006] The object of the present invention is to provide an ultrasonic testing turbine rotating head device.

[0007] The technical solution is as follows:

[0008] An ultrasonic inspection turbine rotating head device includes a rotating head housing, a drainage block embedded in the inner wall of the rotating head housing, and a rear end of the rotating head housing threadedly connected to a pipe joint to connect to a waterway; a focusing probe is disposed within the rotating head housing, the bottom of the focusing probe being threadedly connected to a coaxial line to connect to the circuit, and the front end of the focusing probe being in close contact with the drainage block;

[0009] A bearing is provided on the inner wall of the front end of the rotating head shell, a hollow sleeve rod is provided inside the bearing, a 45° reflector is embedded in the hollow sleeve rod, and the hollow sleeve rod has a water outlet corresponding to the reflective mirror surface of the 45° reflector.

[0010] Furthermore, a drainage head is provided on the outside of the hollow sleeve rod, and the drainage head, the 45-degree reflector and the hollow sleeve rod are fixed into one body by a set screw.

[0011] Furthermore, the coaxial line is arranged on the adapter, and the adapter is also provided with a hollow tube of the centering device. Water flows from the hollow tube of the centering device, flows out from the gap between the focusing probe and the rotating head shell, passes through the guide block, and forms a rotating water flow. Under the action of the rotating water flow, the hollow sleeve rotates together with the diversion head and the 45° reflector. The water flows through the hollow sleeve and flows out from the water outlet.

[0012] Furthermore, the ultrasonic focusing head converts the axial sound path into a radial sound path through the hole in the guide block, the hollow sleeve rod, and the 45° reflector 8, and then receives the return signals from the inner and outer walls.

[0013] Furthermore, an embedded step is provided on the inner wall of the rotating head shell, and the drainage block is correspondingly arranged at the embedded step.

[0014] Furthermore, a rotating head inner groove is provided on the inner wall of the front end of the rotating head shell, and a retaining spring marking pin for fixing the bearing is loaded in the rotating head inner groove.

[0015] Compared with the existing technology, the beneficial effects of the present invention are: it is designed for the needs of rotary ultrasonic detection inside pipes, can meet the detection scenarios inside pipe fittings, and is easy to use; it uses water flow to drive the rotating head, and has a compact structure; the focusing probe is isolated from the rotating hollow sleeve rod, effectively avoiding friction; the parts have a simple structure, are easy to install, are easy to carry and use on site, and reduce maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is one of the structural schematic diagrams of the present invention.

[0017] Figure 2 It is one of the cross-sectional views of the present invention.

[0018] Figure 3 This is the second cross-sectional view of the present invention.

[0019] Figure 4 This is the second structural diagram of the present invention.

[0020] Figure 5 Schematic diagram of the acoustic wave circuit of the present invention.

[0021] Figure 6 It is a waterway schematic diagram of the present invention. DETAILED DESCRIPTION

[0022] Example:

[0023] See also Figure 1-4This embodiment shows an ultrasonic inspection turbine rotating head device, including a rotating head housing 1, a drainage block 2 embedded in the inner wall of the rotating head housing 1, and a pipe joint threadedly connected to the rear end of the rotating head housing to connect to the waterway; a focusing probe 9 is disposed within the rotating head housing, the bottom of the focusing probe 9 being threadedly connected to a coaxial line 10 to connect to the circuit, and the front end of the focusing probe 9 is in close contact with the drainage block 2;

[0024] A bearing 4 is provided on the inner wall of the front end of the rotating head housing 1, a hollow sleeve rod 3 is provided inside the bearing 4, a 45° reflector 8 is embedded in the hollow sleeve rod 3, and the hollow sleeve rod 3 has a water outlet corresponding to the reflective surface of the 45° reflector 8.

[0025] in:

[0026] A drainage head 7 is provided on the outside of the hollow sleeve rod 3 , and the drainage head 7 , the 45° reflector 8 and the hollow sleeve rod 3 are fixed together by a set screw 6 .

[0027] The coaxial line 10 is arranged on the adapter 11, and the adapter 11 is also provided with a hollow tube 12 of the centering device. The water flows from the hollow tube 12 of the centering device, flows out from the gap between the focusing probe 10 and the rotating head housing 1, passes through the guide block 2, and forms a rotating water flow. Under the action of the rotating water flow, the hollow sleeve rod 3 rotates together with the drainage head 7 and the 45° reflector 8. The water flows through the hollow sleeve rod 3 and flows out from the water outlet. For the specific waterway, please refer to Figure 6 .

[0028] The ultrasonic focusing head 9 converts the axial sound path into a radial sound path through the hole in the guide block 2, the hollow sleeve rod 3, and the 45° reflector 8, and then receives the return signal from the inner and outer walls. For the specific sound wave circuit, please refer to Figure 5 .

[0029] An embedded step is provided on the inner wall of the rotating head housing 1 , and the drainage block 2 is correspondingly arranged at the embedded step.

[0030] The front end inner wall of the rotating head housing 1 is provided with a rotating head inner groove, and a retaining spring mark pin 5 for fixing the bearing is loaded in the rotating head inner groove.

[0031] The assembly process of this embodiment is specifically as follows:

[0032] The inner wall of the rotating head housing 1 is processed with a step, and the installation guide block 2 is pressed into the inner wall step and fixed to the rotating head housing 1.

[0033] The bearing 4 is installed outside the hollow sleeve 3 and is installed together with the front end of the rotating head housing 1 .

[0034] The circlip mark needle 5 is installed in the front end slot of the hollow sleeve rod 3. It is blocked at the outer ring of the bearing 4 to prevent the hollow sleeve rod 3 and the bearing 4 from falling off.

[0035] The 45° reflector 8 is installed in the front end hole of the hollow sleeve rod 3.

[0036] The drainage head 7 is mounted on the outer side of the front end of the hollow sleeve rod 3 .

[0037] The set screw 6 is screwed into the drainage head 7 and the 45° reflector 8 to fix the hollow sleeve rod 3, the drainage head 7 and the 45° reflector 8 together. After assembly, a rotating head A is formed as a whole.

[0038] The rotating head A is fixedly connected to the adapter 11 by threading, and the other end of the adapter 11 is fixedly connected to the hollow tube 12 of the centering device by threading.

[0039] The focusing probe 9 is located in the hole of the rotating head A and is screwed and fixed to the SMA-J coaxial line 10 to connect the detection probe circuit. The space inside the rotating head housing 1 is tightened and positioned by the adapter 11 and the rotating head A.

[0040] Compared with the existing technology, the beneficial effects of the present invention are: it is designed for the needs of rotary ultrasonic detection inside pipes, can meet the detection scenarios inside pipe fittings, and is easy to use; it uses water flow to drive the rotating head, and has a compact structure; the focusing probe is isolated from the rotating hollow sleeve rod, effectively avoiding friction; the parts have a simple structure, are easy to install, are easy to carry and use on site, and reduce maintenance work.

[0041] For those skilled in the art, several variations and improvements can be made without departing from the inventive concept of the present invention, and all of these fall within the scope of protection of the present invention.

Claims

1. An ultrasonic testing turbine rotating head device, characterized by: It includes a rotating head shell, a drainage block is embedded on the inner wall of the rotating head shell, and the tail end of the rotating head shell is threadedly connected to the pipe joint to connect to the waterway; a focusing probe is set in the rotating head shell, the bottom of the focusing probe is threadedly connected to the coaxial line to connect the circuit, and the front end of the focusing probe is close to the drainage block; A bearing is provided on the inner wall of the front end of the rotating head shell, a hollow sleeve rod is provided inside the bearing, a 45° reflector is embedded in the hollow sleeve rod, and the hollow sleeve rod has a water outlet corresponding to the reflective mirror surface of the 45° reflector.

2. The ultrasonic testing turbine rotating head device according to claim 1, characterized in that: A drainage head is arranged on the outside of the hollow sleeve rod, and the drainage head, the 45-degree reflector and the hollow sleeve rod are fixed into one body through set screws.

3. The ultrasonic testing turbine rotating head device according to claim 1, characterized in that: The coaxial line is arranged on the adapter, and the adapter is also provided with a hollow tube of the centering device. The water flows from the hollow tube of the centering device, flows out from the gap between the focusing probe and the rotating head shell, passes through the guide block, and forms a rotating water flow. Under the action of the rotating water flow, the hollow sleeve rotates together with the diversion head and the 45° reflector. The water flows through the hollow sleeve and flows out from the water outlet.

4. The ultrasonic testing turbine rotating head device according to claim 3, characterized in that: The ultrasonic focusing head converts the axial sound path into a radial sound path through the hole in the guide block, the hollow sleeve rod, and the 45° reflector 8, and then receives the return signals from the inner and outer walls.

5. The ultrasonic testing turbine rotating head device according to claim 1, characterized in that: An embedded step is provided on the inner wall of the rotating head shell, and the drainage block is correspondingly arranged on the embedded step.

6. The ultrasonic testing turbine rotating head device according to claim 1, characterized in that: The front end inner wall of the rotating head shell is provided with a rotating head inner groove, and a retaining spring marking needle for fixing the bearing is loaded in the rotating head inner groove.

Images