A pressure vessel head hot jacket internal phased array ultrasonic inspection tool holder

Abstract

The application discloses a kind of pressure vessel top cover hot sleeve pipe internal phased array ultrasonic inspection tool rack, its overall columnar, it includes motor bin, rotating table bin, phased array ultrasonic probe and camera cabin, it is characterized by: it further includes support loose leaf, support loose leaf includes loose leaf shell being columnar and being provided with installation cavity on the circumferential surface, loose leaf body is rotationally connected on the circumferential surface of loose leaf shell, driving piston for driving loose leaf body to open or close, gyro wheel is rotationally connected on loose leaf body, the rotation axis of gyro wheel and the rotation axis of loose leaf body opening or closing are all parallel with the axis of tool rack, when loose leaf body closes, the projection of loose leaf body and gyro wheel on the end face of loose leaf shell does not exceed the end face of loose leaf shell, when loose leaf body opens, the projection of gyro wheel on the end face of loose leaf shell exceeds the end face of loose leaf shell, gyro wheel is supported on the inner wall of hot sleeve pipe.The application overcomes the problem that phased array automatic ultrasonic inspection cannot be carried out in small-diameter pipe.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of nuclear power detection equipment, and particularly relates to a tool rack for internal phased array ultrasonic inspection of a hot sleeve of a pressure vessel head. BACKGROUND

[0002] A nuclear reactor pressure vessel is one of the most important components of a nuclear power plant and is a RCC-M nuclear safety class 1 equipment. The quality of the nuclear reactor pressure vessel is a key to ensure the safe operation of a nuclear power system and is the only large-scale component that cannot be replaced in the entire life of a nuclear power plant. In order to determine the quality of the nuclear reactor pressure vessel, mandatory requirements for non-destructive testing of each weld and other parts on the reactor pressure vessel are proposed in the inspection specifications and outlines of nuclear power plants and nuclear power devices, and pre-service and in-service inspections of the reactor pressure vessel are respectively implemented before being put into use and after a certain time interval of operation. The results of the pre-service and in-service inspections are important basis for analyzing and evaluating the operating state of the pressure vessel.

[0003] However, the internal components of the reactor pressure vessel, such as the hot sleeve, the hot sleeve flange, the adapter through-piece, the control rod guide rod and the like, are closely related to the operation of the reactor. At present, in the operation process of the reactor, the water flow vibration of the reactor pressure vessel can cause the contact wear of the lower edge of the hot sleeve and the adapter through-piece, and the wear condition at the position gradually increases with the increase of the operation time of the reactor, which causes the jamming of the control rod guide rod and affects the normal shutdown of the nuclear power unit. In addition, the position (the reactor pressure vessel head where the hot sleeve is located) has high radioactivity, so personnel cannot stay for a long time. At present, there is no inspection equipment for small-diameter hot sleeves, and the large-size hot sleeve detection equipment has the following shortcomings: 1. The coupling agent supply waterway needs to be separately arranged, which leads to complex structure, large volume and unsuitability for small-diameter hot sleeves; 2. The support is rigidly driven, and has the problems of jamming and sticking. SUMMARY

[0004] The application aims to provide a tool rack for internal phased array ultrasonic inspection of a hot sleeve of a pressure vessel head, which can smoothly enter the hot sleeve and smoothly complete the circumferential rotation inspection.

[0005] To solve the above technical problems, the application adopts the following technical scheme: a pressure vessel top cover hot-jacket pipe internal phased array ultrasonic inspection tool holder, which is columnar as a whole, comprises a motor bin, a rotating table bin, a phased array ultrasonic probe and a camera cabin, and is characterized in that it further comprises a support hinge, wherein the support hinge comprises a hinge shell which is columnar and has an installation cavity opened on the peripheral surface, a hinge body rotatably connected to the peripheral surface of the hinge shell, a driving piston for driving the hinge body to open or close, and a roller rotatably connected to the hinge body, the rotation shafts of the roller and the hinge body are parallel to the axis of the tool holder, when the hinge body is closed, the projection of the hinge body and the roller on the end surface of the hinge shell does not exceed the end surface of the hinge shell, when the hinge body is opened, the projection of the roller on the end surface of the hinge shell exceeds the end surface of the hinge shell, and the roller is supported on the inner side wall of the hot-jacket pipe.

[0006] Optimally, the hinge body has two, which are symmetrically arranged on the peripheral surface of the hinge shell.

[0007] Optimally, the phased array ultrasonic probe is arranged on the hinge shell and between the two hinge shells.

[0008] Optimally, one side of the hinge body is rotatably connected to the hinge shell through a rotation shaft, the other side has an opening opened in the circumferential direction, and the roller is rotatably connected in the opening.

[0009] Optimally, the peripheral surface of the hinge shell is provided with a mounting surface, the mounting surface and the installation cavity are located on both sides of the peripheral surface of the hinge shell, and the phased array ultrasonic probe is mounted on the mounting surface.

[0010] Optimally, the motor bin, the rotating table bin, the support hinge and the camera cabin are connected in sequence.

[0011] Optimally, the driving piston comprises a piston cavity formed in the hinge shell, a piston arranged in the piston cavity, a spring arranged in the piston cavity and sleeved on the piston, and the free end of the piston is rotatably connected to the hinge body through a rotation connecting block.

[0012] The optimized rotating table bin is provided with a front end waterway joint, a rear end waterway channel is formed on the loose-leaf shell, the loose-leaf shell comprises a top ring, an upper connecting body, a middle connecting body and a lower connecting body from top to bottom, the top ring is connected with the rotating table bin, the front end waterway joint is coaxially fixedly connected with the top ring, the rear end waterway channel comprises a first water flow channel formed on the top ring, a second water flow channel formed on the upper connecting body, a third water flow channel formed on the middle connecting body and a fourth water flow channel formed on the lower connecting body, the first water flow channel and the second water flow channel are communicated, the third water flow channel and the fourth water flow channel are communicated in sequence, the second water flow channel is communicated with a piston cavity on the upper connecting body, the fourth water flow channel is communicated with a piston cavity on the lower connecting body, and the third water flow channel is communicated to a phased array ultrasonic probe.

[0013] The optimized rotating table bin comprises an upper mounting cylinder, a lower mounting cylinder rotatably sleeved on the upper mounting cylinder, a driving motor fixed on the upper mounting cylinder, and a driving gear fixed on an output shaft of the driving motor, a gear ring is fixedly arranged on an inner circumferential surface of the lower mounting cylinder and engaged with the driving gear, and the lower mounting cylinder is fixedly connected with the loose-leaf shell.

[0014] The optimized driving motor has three driving motors which are uniformly distributed in the upper mounting cylinder.

[0015] The optimized loose-leaf body is provided with a connecting groove on one side for mutual embedding, and two loose-leaf bodies are rotatably connected to the loose-leaf shell through a same loose-leaf rotating shaft.

[0016] The optimized motor bin comprises a connector connected with a wire, a first connecting cylinder coaxially fixedly connected with the connector, a second connecting cylinder coaxially fixedly connected with the first connecting cylinder, and a control board mounted in the first connecting cylinder and the second connecting cylinder.

[0017] The optimized rotating table bin comprises a rotating shaft fixedly connected with the upper mounting cylinder and arranged in the lower mounting cylinder, and a bearing connected between the rotating shaft and the lower mounting cylinder.

[0018] The present application has the advantages that the present application overcomes the problem that the small-diameter pipe cannot be automatically inspected by a phased array ultrasonic probe, overcomes the problem that the phased array ultrasonic probe cannot be circumferentially rotated in the small-diameter pipe, uses a non-rigid piston structure to overcome the problem that the small-diameter pipe is prone to be stuck or dead, and uses a phased array ultrasonic probe to have high defect detection capability and fast inspection speed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application;

[0020] Figure 2 is an exploded view of the present application. DETAILED DESCRIPTION

[0021] The present application is described in detail below with reference to the embodiments shown in the drawings:

[0022] As shown in Figure 1 , 2 , the pressure vessel top cover hot jacket pipe internal phased array ultrasonic inspection tool rack, which is in the form of a column as a whole, comprises a motor compartment 1, a rotating table compartment 2, a phased array ultrasonic probe 3, a support leaf 4 and a camera cabin 5, the motor compartment 1, the rotating table compartment 2, the support leaf 4 and the camera cabin 5 are connected in sequence, and the phased array ultrasonic probe is installed on the support leaf.

[0023] As shown in Figure 2 , the motor compartment 1 comprises a connector 11 connected with a wire, a first connecting cylinder body 12 coaxially fixedly connected with the connector 11, a second connecting cylinder body 13 coaxially fixedly connected with the first connecting cylinder body 12, and a control board 14 installed in the first connecting cylinder body 12 and the second connecting cylinder body 13.

[0024] The support leaflet 4 comprises a leaflet shell 41 in a column shape with a mounting cavity on the peripheral surface, a leaflet body 42 rotatably connected to the peripheral surface of the leaflet shell 41, a driving piston 44 for driving the leaflet body 42 to open or close, a roller 43 rotatably connected to the leaflet body 42, the rotation axis of the roller 43 is parallel to the axis of the tool holder, a connecting groove for mutual embedding is formed on one side of the leaflet body 42, the connecting grooves of the two leaflet bodies are embedded with each other and are rotatably connected to the leaflet shell 41 by the same leaflet rotation shaft 40, the leaflet rotation shaft 40 is provided with a leaflet gasket 410 for filling the gap of the connecting groove left after the two leaflet bodies are spliced. When the leaflet body 42 is closed, the projection of the leaflet body 42 and the roller 43 on the end surface of the leaflet shell 41 does not exceed the end surface of the leaflet shell 41, a connecting groove for mutual embedding is formed on one side of the leaflet body, the two leaflet bodies are rotatably connected to the leaflet shell by the same leaflet rotation shaft. When the leaflet body 42 is opened, the projection of the roller 43 on the end surface of the leaflet shell 41 exceeds the end surface of the leaflet shell 41, and the roller 43 is supported on the inner wall of the hot sleeve. The leaflet body 42 has two, which are respectively arranged on the peripheral surface of the leaflet shell 41. The phased array ultrasonic probe is arranged on the leaflet shell 41 and located between the two leaflet shells 41. One side of the leaflet body 42 is rotatably connected to the leaflet shell 41 by a rotation shaft, the other side thereof is provided with an opening in the circumferential direction, and the roller 43 is rotatably connected in the opening. The peripheral surface of the leaflet shell 41 is provided with a mounting surface, the mounting surface and the mounting cavity are located on both sides of the peripheral surface of the leaflet shell 41, and the phased array ultrasonic probe is mounted on the mounting surface.

[0025] The loose-leaf shell 41 comprises a top ring 411, an upper connecting body 412, a middle connecting body 413 and a lower connecting body 414 from top to bottom, the driving piston 44 comprises a piston cavity 4121 formed on the upper connecting body 412 and a piston cavity 4141 formed on the lower connecting body 414, a piston 46 arranged in the piston cavities 4141 and 4121, a spring 47 arranged in the piston cavities 4141 and 4121 and sleeved on the piston 46 and making the piston 46 always have a tendency to shrink into the piston cavities, and the free end of the piston 46 is rotatably connected with the loose-leaf body 42 through a rotating connecting block 49. A front end waterway connector 28 is arranged in the rotating table bin 2, the front end waterway connector 28 is a connector with a model of KSH04-M5 produced by SMC company, water is supplied to the rear end waterway channel through a water pipe penetrating in the motor bin and the rotating table bin, the rear end waterway channel is formed on the loose-leaf shell 41 and is communicated with the water cavity of the piston cavity, the rotating table bin comprises an upper mounting cylinder 21, a lower mounting cylinder 22 rotatably sleeved on the upper mounting cylinder 21, a driving motor 23 fixed on the upper mounting cylinder 21, a driving gear 24 fixed on the output shaft of the driving motor 23, a rotating shaft 26 fixedly connected with the upper mounting cylinder 21 and arranged in the lower mounting cylinder, and a bearing 27 connected between the rotating shaft 26 and the lower mounting cylinder 22. A gear ring 25 engaged with the driving gear 24 is fixedly arranged on the inner circumferential surface of the lower mounting cylinder 22, and the lower mounting cylinder is fixedly connected with the loose-leaf shell 41. The driving motor has three, which are uniformly distributed in the upper mounting cylinder 21. The second connecting cylinder body 13 is fixedly and coaxially connected with the upper mounting cylinder 21. The front end waterway connector 28 is arranged on the rotating table bin, the rear end waterway channel is formed on the loose-leaf shell, the top ring 411 is connected with the lower mounting cylinder 22 of the rotating table bin 2, the front end waterway connector 28 is fixedly and coaxially connected with the top ring 411, the rear end waterway channel comprises a first water flow channel 481 arranged on the top ring, a second water flow channel 482 arranged on the upper connecting body, a third water flow channel 483 arranged on the middle connecting body, and a fourth water flow channel 484 arranged on the lower connecting body, the first water flow channel 481, the second water flow channel 482, the third water flow channel 483 and the fourth water flow channel 484 are communicated in sequence, the second water flow channel 482 is communicated with the piston cavity 4121 on the upper connecting body, the fourth water flow channel 484 is communicated with the piston cavity 4141 on the lower connecting body, and the third water flow channel 482 is communicated with the phased array ultrasonic probe 3 and provides coupling agent water for the phased array ultrasonic probe 3.

[0026] The principle of the application is that the tool holder is sent into the hot sleeve through the wire 0, then water is sent into the piston cavity through the front end waterway connector as the pressure source for the piston rod to extend out, and the water is also sent to the phased array ultrasonic probe 3 as the coupling agent, the channel formed by the front end waterway connector and the rear end waterway channel plays the role of pushing out the loose-leaf body and supplying the coupling agent, so that the structure of the tool holder is more compact.

[0027] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit of the present application should be covered within the protection scope of the present application.

Claims

1. A pressure vessel head hot lap joint internal phased array ultrasonic inspection tooling stand, which is generally cylindrical in shape, comprising a motor compartment, a rotary table compartment, a phased array ultrasonic probe, and a camera compartment, characterized in that: It also includes a support leaflet, the support leaflet includes a leaflet shell which is cylindrical and has a mounting cavity on the peripheral surface, a leaflet body which is rotatably connected to the peripheral surface of the leaflet shell, a drive piston for driving the leaflet body to open or close, a roller which is rotatably connected to the leaflet body, the rotation axis of the roller is parallel to the axis of the tool holder, and the phase-controlled array ultrasonic probe is arranged on the leaflet shell and between the two leaflet shells; the peripheral surface of the leaflet shell is provided with a mounting surface, the mounting surface is located on both sides of the peripheral surface of the leaflet shell, and the phase-controlled array ultrasonic probe is mounted on the mounting surface; when the leaflet body is closed, the projection of the leaflet body and the roller on the end surface of the leaflet shell does not exceed the end surface of the leaflet shell, when the leaflet body is opened, the projection of the roller on the end surface of the leaflet shell exceeds the end surface of the leaflet shell, and the roller is supported on the inner wall of the hot sleeve.

2. The pressure vessel head hot lap joint internal phased array ultrasonic inspection tooling rack of claim 1, wherein: The leaflet body has two, which are respectively arranged on the peripheral surface of the leaflet shell.

3. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tool holder of claim 1, wherein: One side of the leaflet body is rotatably connected to the leaflet shell through a rotating shaft, and the other side is provided with an opening in the circumferential direction, and the roller is rotatably connected in the opening.

4. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tool holder of claim 1, wherein: The motor bin, the rotating table bin, the support leaflet, and the camera cabin are connected in sequence.

5. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tool holder of claim 1, wherein: The drive piston includes a piston cavity formed on the leaflet shell, a piston arranged in the piston cavity, a spring arranged in the piston cavity and sleeved on the piston, and the piston always has a tendency to shrink into the piston cavity. The free end of the piston is rotatably connected to the leaflet body through a rotating connection block.

6. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tool holder of claim 1, wherein: The rotating table bin is provided with a front waterway connector, the leaflet shell is formed with a rear waterway passage, and the leaflet shell sequentially includes a top ring, an upper connecting body, a middle connecting body and a lower connecting body from top to bottom. The top ring is connected with the rotating table bin, the front waterway connector is coaxially fixedly connected with the top ring, the rear waterway passage includes a first water flow channel opened on the top ring, a second water flow channel opened on the upper connecting body, a third water flow channel opened on the middle connecting body, and a fourth water flow channel opened on the lower connecting body. The first water flow channel and the second water flow channel are communicated, the third water flow channel and the fourth water flow channel are communicated in sequence, the second water flow channel is communicated with the piston cavity on the upper connecting body, the fourth water flow channel is communicated with the piston cavity on the lower connecting body, and the third water flow channel is communicated with the phase-controlled array ultrasonic probe.

7. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tool holder of claim 3, wherein: The rotating table bin includes an upper mounting cylinder, a lower mounting cylinder rotatably sleeved on the upper mounting cylinder, a drive motor fixed on the upper mounting cylinder, and a drive gear fixed on the output shaft of the drive motor. The inner peripheral surface of the lower mounting cylinder is fixedly provided with a gear ring engaged with the drive gear, and the lower mounting cylinder is fixedly connected with the leaflet shell.

8. The pressure vessel head hot lap joint internal phased array ultrasonic inspection tooling rack of claim 7, wherein: The drive motor has three, which are uniformly distributed in the upper mounting cylinder.

9. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tooling rack of claim 3, wherein: The leaflet body is provided with a connecting groove for mutual embedding on one side, and the two leaflet bodies are rotatably connected to the leaflet shell through a same leaflet rotating shaft.

10. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tooling rack of claim 7, characterized by: The motor compartment comprises a connector connected with the wire, a first connecting cylinder fixedly connected with the connector coaxially, a second connecting cylinder fixedly connected with the first connecting cylinder coaxially, and a control board installed in the first connecting cylinder and the second connecting cylinder.

11. The pressure vessel head hot sleeve internal phased array ultrasonic inspection tooling rack of claim 10, wherein: The rotating table compartment comprises a rotating shaft fixedly connected with the upper mounting cylinder and arranged in the lower mounting cylinder, and a bearing connected between the rotating shaft and the lower mounting cylinder.

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