CN214150558U

CN214150558U - Pipe end flaw detection system based on phased array

Info

Publication number: CN214150558U
Application number: CN202022990515.4U
Authority: CN
Inventors: 林光辉; 韩志雄; 金耀辉; 赵亚军; 韩冬; 吴笛; 刘潮
Original assignee: Wuhan Zhongke Innovation Technology Co ltd
Current assignee: Wuhan Zhongke Innovation Technology Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-09-07
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to a pipe end flaw detection system based on phased array, which comprises a fixed seat, a mechanical arm, a probe clamping frame, a phased array probe, a water supply device, a pipeline rotating device and a pipeline transmission device; the manipulator install in on the fixing base, probe holder install in on the instrument tip of manipulator, phased array probe's quantity has a plurality ofly, and is a plurality of phased array probe is used for realizing the pipe end of equidirectional respectively and detects a flaw, and is a plurality of phased array probe is fixed in along the equidirectional respectively on the probe holder, water supply installation's outlet pipe install in on the fixing base, pipeline transmission device is used for placing and transmits the pipeline that awaits measuring, pipeline rotary device is used for control the pipeline rotation that awaits measuring. The utility model discloses can carry out the pipe end automatically and detect a flaw, and compatible different model pipelines, detection technology are complete.

Description

Pipe end flaw detection system based on phased array

Technical Field

The utility model relates to a pipe end technical field that detects a flaw especially relates to a pipe end flaw detection system based on phased array.

Background

The automatic detection of steel pipes is quite mature, but most steel pipe detection equipment detects aiming at a pipe body and leaves an end part for manual flaw detection. The manual flaw detection mode has the problems of low efficiency and incapability of tracing the flaw detection result in the process, and in addition, only layered detection is usually carried out when the flaw detection is carried out manually, so that the detection process is incomplete. This is contrary to the current development direction, and therefore, an automatic means for controlling the quality of the pipe end is urgently needed.

The existing few devices for automatically detecting the flaws of the pipe end often have the following defects: 1. the compatibility is poor, and the applicable detection object is single; 2. the detection process is single, and the whole process detection cannot be carried out; 3. a detection blind area still exists at the edge of the pipe end; 4. for a pipeline with a groove at the pipe end, the groove area cannot be detected; 5. coupling water is easy to freeze at low temperature, damages a water supply pipeline and influences normal detection.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a pipe end inspection system based on a phased array to solve the problems of poor compatibility and incomplete inspection process of the existing pipe end inspection equipment.

The utility model provides a pipe end flaw detection system based on phased array, which comprises a fixed seat, a mechanical arm, a probe clamping frame, a phased array probe, a water supply device, a pipeline rotating device and a pipeline transmission device;

the manipulator install in on the fixing base, probe holder install in on the instrument tip of manipulator, phased array probe's quantity has a plurality ofly, and is a plurality of phased array probe is used for realizing the pipe end of equidirectional respectively and detects a flaw, and is a plurality of phased array probe is fixed in along the equidirectional respectively on the probe holder, water supply installation's outlet pipe install in on the fixing base, pipeline transmission device is used for placing and transmits the pipeline that awaits measuring, pipeline rotary device is used for control the pipeline rotation that awaits measuring.

Furthermore, the probe clamping frame comprises an arm, a connecting plate, a mounting plate, a lifting device, a swinging fork and a water drum;

one end of the arm is connected with the tool tail end of the manipulator, the other end of the arm is connected with the mounting plate through the connecting plate, the number of the lifting devices, the number of the swing forks and the number of the water bags are equal to and in one-to-one correspondence with the number of the phased array probes, the lifting devices are respectively mounted on the mounting plate, the swing forks are respectively mounted at the lifting ends of the corresponding lifting devices, the water bags are rotatably connected to the corresponding swing forks, and the phased array probes are respectively mounted in the corresponding water bags.

Furthermore, the lifting device comprises a slide rail, a slide block and an air cylinder, the slide rail is mounted on the mounting plate, the slide block is slidably mounted on the slide rail, the swing fork is mounted on the slide block, the air cylinder is mounted on the slide rail, and the telescopic end of the air cylinder is connected with the slide block and drives the slide block to slide along the slide rail.

Furthermore, the phased array probe comprises a probe main body, a probe fixing seat and a wear pad;

the probe fixing seats are provided with inclined mounting surfaces, the inclination angle of the mounting surface of the probe fixing seat of each phased array probe is correspondingly set according to the detection direction of the phased array probe, the probe fixing seats are mounted on the probe clamping frames, and the probe main bodies are mounted on the mounting surfaces of the probe fixing seats; a detection window is formed in the wear-resistant pad, and the detection end of the probe main body extends into the detection window and does not protrude out of the detection window.

Further, the water supply device comprises a sewage collecting tank, a water treatment device and a water supply network;

a ground groove is formed below the probe clamping frame, the sewage collecting tank is arranged underground, and the ground groove is communicated with the sewage collecting tank and is used for guiding the detected sewage to the sewage collecting tank; the sewage collecting tank is communicated with the water treatment device, and the water treatment device is communicated with the water bags of the probe clamping frames through the water supply pipe network.

Further, the sewage collecting pond includes cell body, clean water pump and sewage pump, be provided with the filter screen in the cell body, the filter screen will the cell body is separated for clear water district and sewage district, clean water pump set up in the clear water district, and with water treatment facilities intercommunication, the sewage pump set up in the sewage district, and be used for with the water discharge in the sewage district.

Furthermore, the water treatment device comprises a water tank, a water tank heater, a dirt blocking and air isolating grid, a circulating pump, a deaerator, a first water supply valve, a first drain valve and a first air valve;

block dirty gas barrier bars set up in the water tank, and will the water tank separates for into district and the play pool of intaking, it sets up the inlet tube in the district to intake, and pass through the inlet tube with the clarified water pump intercommunication, it still is provided with in the district to intake the water tank heater, the circulating pump set up in the play pool, the circulating pump pass through the outlet pipe with the deaerator intercommunication, the deaerator with first feed water valve intercommunication, the one end of first feed water valve with supply network intercommunication, the other end of first feed water valve pass through the drain pipe with first drain valve intercommunication, first feed water valve with install on the pipeline between the first drain valve first pneumatic valve.

Further, the water supply network comprises a main pipeline, branch pipelines and a tail end functional module; one end of the main pipeline is communicated with the deaerator through the first water supply valve, the other end of the main pipeline is communicated with a plurality of branch pipelines respectively, and each branch pipeline is provided with one tail end functional module; the terminal functional module comprises a second water supply valve, a second drain valve, a second air valve and a pipeline heater; the branch pipeline is communicated with a corresponding second water supply valve, one end of the second water supply valve is communicated with the second drain valve through a drain pipe, the other end of the second water supply valve is communicated with a water drum of the probe clamping frame, and the pipeline heater and the second air valve are installed on a pipeline between the second water supply valve and the water drum.

Further, the pipeline transmission device comprises a transmission roller way, and the pipeline rotating device comprises a rotating roller way and a material blocking wheel;

the conveying roller way is used for conveying the pipeline to be detected to the rotating roller way, the rotating roller way is used for driving the pipeline to be detected to rotate, and the material blocking wheel is installed on the rotating roller way and used for limiting axial movement of the pipeline to be detected during rotation.

Has the advantages that: the utility model discloses in, the fixing base is used for placing the manipulator, and the terminal installation probe holding frame of instrument of manipulator, pipe end are detected a flaw and are relied on the manipulator to carry out the state adaptation. The probe clamping frame is used for fixing the phased array probes, and the phased array probes are multiple and used for realizing different flaw detection processes. The water supply device provides coupling water supply for flaw detection and provides stable and reliable coupling water for phased array flaw detection. The utility model discloses a manipulator carries out the pipe end and detects a flaw, has promoted the flexibility of detecting a flaw greatly for the phased array probe can be at great within range motion, has enlarged the application scope of this system, is applicable to the pipe end of the pipeline that awaits measuring of different models, different pipe diameters, different grade type and detects a flaw. Meanwhile, a plurality of phased array probes are arranged on the probe clamping frame and carry out flaw detection of different processes simultaneously, so that more comprehensive flaw detection is realized.

Drawings

Fig. 1 is a schematic structural diagram of a probe holding frame and a phased array probe of a first embodiment of a phased array based pipe end inspection system provided by the present invention;

fig. 2 is a schematic structural diagram of a water supply device according to a first embodiment of the phased array based pipe end inspection system provided by the present invention;

fig. 3 is a schematic structural diagram of a transmission device according to a first embodiment of the phased array based pipe end inspection system provided by the present invention;

reference numerals:

2. a probe clamping frame; 21. an arm; 22. a connecting plate; 23. mounting a plate; 24. a slide rail; 25. a slider; 26. a cylinder; 27. a pendulum fork; 28. water bags; 31. a probe body; 32. a wear pad; 33. a probe fixing seat; 4. a water supply device; 411. a tank body; 412. a filter screen; 413. a clean water pump; 414. a sewage pump; 421. A water tank; 422. a water tank heater; 423. a trash holding and gas isolating grid; 424. a circulation pump; 425. a deaerator; 426. A first water supply valve; 427. a first drain valve; 428. a first air valve; 431. a main pipeline; 432. a branch pipe; 433. a second water supply valve; 434. a second drain valve; 435. a second air valve; 436. a pipe heater; 51. rotating the roller way; 52. a material blocking wheel; 10. a pipeline to be tested; 101. the pipe end.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

Example 1

The embodiment 1 of the utility model provides a pipe end flaw detection system based on phased array, which is hereinafter referred to as the system for short, and comprises a fixed seat, a mechanical arm, a probe clamping frame, a phased array probe, a water supply device, a pipeline rotating device and a pipeline transmission device;

In the system, the fixing seat is used for placing the manipulator, the fixing seat is arranged in a fixing range of a pipe end flaw detection station of the pipeline to be detected, and the flaw detection station is arranged on one side of the pipe end and does not interfere with linear conveying of the pipeline to be detected. During detection, two pipe ends of a pipeline to be detected are respectively provided with a set of system. The manipulator chooses ripe manipulator brand for use, and the manipulator is 6 manipulators in this embodiment, and the installation is fixed on the fixing base. The tail end of a tool of the manipulator is provided with a probe clamping frame, and the pipe end flaw detection is carried out by the manipulator for state adaptation. The probe clamping frame is used for installing and fixing the phased array probe. In the embodiment, the number of the phased array probes is four, two phased array probes are used for detecting longitudinal damage of the pipeline to be detected and correspond to two longitudinal directions respectively, and the other two phased array probes are used for transverse flaw detection and layered flaw detection respectively, so that different flaw detection processes are realized. The water supply device provides coupling water supply for flaw detection and provides stable and reliable coupling water for phased array flaw detection. The water supply device is arranged near the pipe end flaw detection station, is installed on the fixed seat through a water pipe and is connected to the water drum of the probe clamping frame. The pipeline transmission device is used for transmitting the pipeline to be detected to the pipeline rotating device, the pipeline rotating device controls the rotation of the pipeline to be detected, the rotation motion of the pipeline to be detected is matched with the motion of the manipulator, and the detection of all-around different flaw detection processes on the axis and the circumference of the pipeline to be detected is realized by matching with probe frames in different directions.

The utility model discloses a manipulator carries out the pipe end and detects a flaw, has promoted the flexibility of detecting a flaw greatly for the phased array probe can be at great within range motion, has enlarged the application scope of this system, is applicable to the pipe end of the pipeline that awaits measuring of different models, different pipe diameters, different grade type and detects a flaw. Meanwhile, a plurality of phased array probes are arranged on the probe clamping frame and carry out flaw detection of different processes simultaneously, so that more comprehensive flaw detection is realized.

Preferably, as shown in fig. 1, the probe holder 2 comprises an arm 21, a connecting plate 22, a mounting plate 23, a lifting device, a swing fork 27 and a water bag 28;

one end of the arm 21 is connected with the tool end of the manipulator, the other end of the arm 21 is connected with the mounting plate 23 through the connecting plate 22, the number of the lifting devices, the number of the swing forks 27 and the number of the water drums 28 are equal to and in one-to-one correspondence with the number of the phased array probes, each lifting device is respectively mounted on the mounting plate 23, each swing fork 27 is respectively mounted at the lifting end of the corresponding lifting device, each water drum 28 is rotatably connected to the corresponding swing fork 27, and each phased array probe is mounted in the corresponding water drum 28.

The probe clamping frame 2 of this embodiment is driven by the manipulator and gets into the inside appointed detection area of pipeline 10 that awaits measuring, and elevating gear action drives phased array probe and moves down to realize the contact of phased array probe and pipeline 10's pipe wall that awaits measuring, survey then. The swing fork 27 can rotate at a certain angle in the axial direction, and is fixed by using mechanical limit to prevent the swing fork 27 from turning. The two sides of the swing fork 27 are provided with fixing holes for installing the water drum 28, the water drum 28 can rotate for a certain angle along the fixing holes of the swing fork 27 in the circumferential direction, and mechanical limiting is also used for limiting to a certain degree so as to prevent the water drum 28 from turning over. The phased array probe is mounted in a water drum 28. After the detection is finished, the lifting device drives the probe clamping frame 2 to be lifted, so that the phased array probe leaves the pipeline 10 to be detected. The structure can effectively adapt to the detection working conditions that the bending degree of the pipe end 101 is large and the ovality is not good.

Specifically, as shown in fig. 1, the lifting device includes a slide rail 24, a slide block 25 and an air cylinder 26, the slide rail 24 is mounted on the mounting plate 23, the slide block 25 is slidably mounted on the slide rail 24, the swing fork 27 is mounted on the slide block 25, the air cylinder 26 is mounted on the slide rail 24, and a telescopic end of the air cylinder 26 is connected with the slide block 25 and drives the slide block 25 to slide along the slide rail 24.

The lift of phased array probe is realized to cylinder 26 in this embodiment, still is connected with the extension spring between cylinder 26 and the slide rail 24, and the stroke that cylinder 26 stretches out completely is highly big than the phased array probe whereabouts, and the difference in height between them is absorbed by the extension spring to realize the flexible contact of phased array probe and the pipe wall of the pipeline 10 that awaits measuring.

Preferably, as shown in fig. 1, the phased array probe includes a probe main body 31, a probe fixing seat 33 and a wear pad 32;

the probe fixing seat 33 is provided with an inclined mounting surface, the inclination angle of the mounting surface of the probe fixing seat 33 of each phased array probe is correspondingly set according to the detection direction, the probe fixing seat 33 is mounted on the probe clamping frame 2, and the probe body 31 is mounted on the mounting surface of the probe fixing seat 33; the wear pad 32 is provided with a detection window, and the detection end of the probe main body 31 extends into the detection window and does not protrude out of the detection window.

The probe main body 31 is used for realizing detection, the probe fixing seat 33 is used for fixing the probe main body 31 and providing a detection angle of a corresponding detection process, and the wear pad 32 prevents the detection end of the probe main body 31 from directly contacting and colliding with the pipeline 10 to be detected, so that the probe main body 31 is prevented from being damaged.

Preferably, as shown in fig. 2, the water supply device comprises a sewage collecting tank, a water treatment device and a water supply network;

a ground groove is formed below the probe clamping frame 2, the sewage collecting tank is arranged underground, and the ground groove is communicated with the sewage collecting tank and is used for guiding the detected sewage to the sewage collecting tank; the sewage collecting tank is communicated with the water treatment device, and the water treatment device is communicated with the water bags 28 of the probe clamping frames 2 through the water supply pipe network.

Coupling liquid is introduced into the water bag 28 of the probe clamping frame 2, and forms a coupling layer between the probe body 31 and the pipeline 10 to be detected, so that detection is realized. The coupling liquid is recycled in the water supply device, specifically, the coupling liquid flows out of the water drum 28, flows to the ground groove, flows into the sewage collecting tank through the ground groove, and then flows into the water treatment device, and the main functions of the water treatment device are to remove bubbles and impurities in the coupling liquid, control constant pressure, complete the circulation of the coupling liquid, and thus ensure the perfect coupling of ultrasonic signals.

Preferably, as shown in fig. 2, the sewage collecting tank includes a tank body 411, a clean water pump 413 and a sewage pump 414, a filter screen 412 is disposed in the tank body 411, the filter screen 412 divides the tank body 411 into a clean water area and a sewage area, the clean water pump 413 is disposed in the clean water area and is communicated with the water treatment device, and the sewage pump 414 is disposed in the sewage area and is used for discharging water in the sewage area.

Underground pool body 411 contains sewage district and clear water district, and the sewage district is collected the water that ground slot was retrieved, and the sewage of collecting flows into clear pool body 411 through the first filter screen 412 between sewage district and the clear water district, and water treatment facilities is handled and then carries out cycle use to the pump extraction of clear water pump 413. In order to facilitate cleaning of the underground tank body 411, the bottom surface of the tank body 411 is arranged to be a slope surface, the slope surface gradually inclines downwards from the clean water area to the sewage area, a small tank capable of containing a sewage pump 414 is dug at the minimum gradient position of the sewage area, the sewage pump 414 is used for discharging the sewage pump 414, and a small tank capable of containing a clean water pump 413 is dug at the minimum gradient position of the clean water area, so that the tank can be directly flushed with water and sewage can be continuously discharged.

Preferably, as shown in fig. 2, the water treatment apparatus includes a water tank 421, a water tank heater 422, a trash air barrier 423, a circulation pump 424, a deaerator 425, a first water supply valve 426, a first drain valve 427, and a first air valve 428;

the dirt blocking and air isolating grid 423 is arranged in the water tank 421 and divides the water tank 421 into a water inlet area and a water outlet area, a water inlet pipe is arranged in the water inlet area and is communicated with the clean water pump 413 through the water inlet pipe, the water tank heater 422 is also arranged in the water inlet area, the circulating pump 424 is arranged in the water outlet area, the circulating pump 424 is communicated with the deaerator 425 through a water outlet pipe, the deaerator 425 is communicated with the first water supply valve 426, one end of the first water supply valve 426 is communicated with the water supply pipe network, the other end of the first water supply valve 426 is communicated with the first drain valve 427 through a drain pipe, and the first air valve 428 is arranged on a pipeline between the first water supply valve 426 and the first drain valve 427.

The water treatment device comprises a stainless steel water tank 421, a circulating pump 424, a deaerator 425, a filter device and the like. The water tank 421 is used for storing the filtered coupling water pumped from the low tank body 411, and a water tank heater 422 is arranged in the water tank 421 and used for ensuring that the temperature of the water in the water tank 421 reaches a set temperature. The middle of the water tank 421 is provided with a trash rack 423 for effectively isolating part of the water scale and bubbles generated by heating. The heated water is pumped by the circulating pump 424, passes through the deaerator 425, and then enters the first water supply valve 426, and when water is supplied, the first water supply valve 426 is in an open state, and water flows into a water supply network; if the system needs to be shut down, the first water supply valve 426 and the recirculating pump 424 are closed, the first drain valve 427 is opened, and water flows from the probe holder 2 to the first drain valve 427 for draining since the distal water line is in the probe holder 2. After most of the remaining water is drained, the first drain valve 427 is closed. The first air valve 428 is then opened to allow compressed air to flow through the water line, blowing the remaining water out of the first end drain valve 427.

Preferably, as shown in fig. 2, the water supply network comprises a main pipe 431, a branch pipe 432 and an end functional module; one end of the main pipe 431 is communicated with the deaerator 425 through the first water supply valve 426, the other end of the main pipe 431 is respectively communicated with a plurality of branch pipes 432, and each branch pipe 432 is provided with one terminal functional module; the end function module includes a second water supply valve 433, a second drain valve 434, a second gas valve 435, and a pipe heater 436; the branch pipes 432 are communicated with corresponding second water supply valves 433, one end of each second water supply valve 433 is communicated with the second drain valve 434 through a drain pipe, the other end of each second water supply valve 433 is communicated with the water pocket 28 of the probe holder 2, and the pipe heater 436 and the second air valve 435 are installed on a pipe between the second water supply valve 433 and the water pocket 28.

In order to overcome the influence of low temperature in winter on a water supply device, the system is a system-level solution particularly aiming at freezing prevention. The main conduit 431 and branch conduit 432 are conduits from the tank 421 to the various end functional modules. Main pipeline 431 and branch pipeline 432 use the hard tube to lay, twine the heating tape on main pipeline 431 and the branch pipeline 432, guarantee that rivers reach the uniform temperature, and the heat preservation material is wrapped up in to the outside, reduces the heat transfer when rivers advance. The tail end of the water path is connected with the water drum 28 of each probe clamping frame 2 through a tail end functional module. Specifically, the coupling liquid is connected with a second water supply valve 433 through a branch pipeline, when a flaw is detected, the second water supply valve 433 is opened, a second drain valve 434 is closed, and the waterway normally supplies coupling water; when the system is stopped, the second water supply valve 433 is closed, the second drain valve 434 is opened, after the residual water in the main pipeline 431 is automatically discharged and dried, the second drain valve 434 is closed, the air blowing air path is started to blow water to the pipelines at the tail ends of the functions, and after the residual water in the pipelines is dried, the second air valve 435 is closed. The end function module also includes a pipe heater 436, primarily to account for the water in the surface tank 421 traveling long distances, where the temperature may drop comparatively much. The pipeline heater 436 is preferably of an automatic temperature control type, and when the water temperature is lower than a threshold value, a heating circuit is started to heat, and when the temperature reaches, the heating is automatically stopped, so that the energy conservation and the environmental protection are realized.

Preferably, as shown in fig. 3, the pipeline transmission device includes a transmission roller way, and the pipeline rotation device includes a rotation roller way 51 and a material blocking wheel 52;

the conveying roller way is used for conveying the pipeline 10 to be detected to the rotating roller way 51, the rotating roller way 51 is used for driving the pipeline 10 to be detected to rotate, and the material blocking wheel 52 is installed on the rotating roller way 51 and used for limiting axial movement of the pipeline 10 to be detected during rotation.

The conveying roller way is used for conveying and conveying the pipeline 10 to be detected, and the rotating roller way 51 is used for driving the pipeline 10 to be detected to rotate so as to realize the detection of the whole circumferential direction of the pipe end 101. Both sides of the pipe end 101 are provided with material blocking wheels 52 for accurate axial positioning. The material blocking wheel 52 comprises a telescopic rod and a roller, and is used for providing a reference coordinate for flaw detection, and preventing the pipeline 10 to be detected from axial movement when rotating, so that the probe clamping frame 2 is inaccurate in falling position (can fall empty when being serious, and can damage the probe). When the pipeline 10 to be detected is transmitted to the material blocking wheel 52, the pipeline falls onto the rotating roller way 51, the rotating roller way 51 drives the pipeline 10 to be detected to rotate in situ, and if the pipeline 10 to be detected moves in the positive direction (towards the material blocking wheel 52), the movement can be limited by the material blocking wheel 52; if the pipe 10 to be tested has reverse play (departs from the material blocking wheel 52), the rotation direction needs to be changed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A pipe end flaw detection system based on a phased array is characterized by comprising a fixed seat, a mechanical arm, a probe clamping frame, a phased array probe, a water supply device, a pipeline rotating device and a pipeline transmission device;

2. The phased array based pipe end inspection system of claim 1, wherein the probe holder comprises an arm, a connection plate, a mounting plate, a lifting device, a pendulum fork and a water drum;

3. The phased array based pipe end inspection system of claim 2, wherein the lifting device comprises a slide rail, a slide block and a cylinder, the slide rail is mounted on the mounting plate, the slide block is slidably mounted on the slide rail, the swing fork is mounted on the slide block, the cylinder is mounted on the slide rail, and a telescopic end of the cylinder is connected with the slide block and drives the slide block to slide along the slide rail.

4. The phased array based pipe end inspection system of claim 1, wherein the phased array probe comprises a probe body, a probe holder, and a wear pad;

5. The phased array based pipe end inspection system according to claim 1, wherein the water supply device comprises a sewage collection tank, a water treatment device, and a water supply network;

6. The phased array based pipe end inspection system according to claim 5, wherein the sewage collection tank comprises a tank body, a clean water pump and a sewage pump, a filter screen is arranged in the tank body, the filter screen divides the tank body into a clean water area and a sewage area, the clean water pump is arranged in the clean water area and communicated with the water treatment device, and the sewage pump is arranged in the sewage area and used for discharging water in the sewage area.

7. The phased array based pipe end inspection system according to claim 6, wherein the water treatment device comprises a water tank, a water tank heater, a trash holding and air isolating grid, a circulation pump, a deaerator, a first water supply valve, a first drain valve and a first air valve;

8. The phased array based pipe end inspection system of claim 7 wherein the water supply network comprises a main pipe, branch pipes and end functional modules; one end of the main pipeline is communicated with the deaerator through the first water supply valve, the other end of the main pipeline is communicated with a plurality of branch pipelines respectively, and each branch pipeline is provided with one tail end functional module; the terminal functional module comprises a second water supply valve, a second drain valve, a second air valve and a pipeline heater; the branch pipeline is communicated with a corresponding second water supply valve, one end of the second water supply valve is communicated with the second drain valve through a drain pipe, the other end of the second water supply valve is communicated with a water drum of the probe clamping frame, and the pipeline heater and the second air valve are installed on a pipeline between the second water supply valve and the water drum.

9. The phased array based pipe end inspection system of claim 1 wherein the pipe transport means comprises a transport roller table, the pipe rotation means comprises a rotary roller table and a material blocking wheel;