Small-diameter tube DR detection flaw detection system

Abstract

The utility model discloses a flaw detection system for DR (Digital Radiography) detection of a small-diameter tube, and relates to the technical field of automatic nondestructive testing. The X-ray system, the ray machine movement system, the grating opening and closing system, the pipe clamping and rotating system, the digital imaging system, the image quality indicator automatic placing system, the lead room protection system, the workpiece sorting system and the automatic marking system are respectively in control connection with the control system. According to the DR detection flaw detection system for the small-diameter pipe, clamping and rotation of the small-diameter pipe can be automatically controlled through the control system and the pipe clamping and rotating system; opening and closing of the grating can be automatically controlled through the control system and the grating opening and closing system. The arrangement of the image quality indicator can be automatically controlled through the control system and the image quality indicator automatic arrangement system, so that the efficiency and the detection quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated nondestructive testing, and more specifically to a DR flaw detection system for small-diameter pipes. Background Art

[0002] Welding is a key process in the manufacturing of major power generation equipment, and its quality determines the safety and reliability of power generation equipment. According to external quality feedback over the years, more than 80% of the quality problems of power plant boilers are caused by weld quality. Therefore, effectively improving the welding quality of power plant boiler enterprises is very important to ensure production safety and help enterprises improve quality and efficiency.

[0003] In the petrochemical, energy and power, aerospace and other industries, small-diameter pipes (specifically pipes with a diameter of 100mm or less) are important parts of related equipment. The serpentine pipe is a small-diameter pipe and is a core component of power station boilers. The operating temperature is as high as 677℃ and the working pressure is 40MPa.

[0004] In the existing technology, when X-ray imaging defect detection is performed on the serpentine and straight pipe welds of boiler high-temperature components, a DR imaging detection system (referred to as industrial television RTV in the industry) is required. Currently, the industry's RTV systems are all semi-automatic systems, which require manual control of small-diameter pipe clamping and rotation, manual control of grating opening and closing, image acquisition, manual control of image quality meter placement, image quality measurement, and manual defect marking, resulting in low flaw detection efficiency. Utility Model Content

[0005] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a small-diameter pipe DR inspection flaw detection system to solve the defects existing in the manual control in the above-mentioned prior art.

[0006] In order to achieve the above objectives, the technical solution adopted by the utility model is:

[0007] A small diameter pipe DR flaw detection system, comprising:

[0008] Control systems;

[0009] An X-ray system, a ray machine motion system, a grating opening and closing system, a pipe clamping and rotating system, a digital imaging system, an image quality meter automatic placement system, a lead room protection system, a workpiece sorting system and an automatic marking system respectively connected to the control system;

[0010] The X-ray system, the ray machine motion system, the grating opening and closing system, the tube clamping and rotating system, the digital imaging system, the image quality meter automatic placement system, and the automatic marking system are all located inside the lead room. Inside the lead room, small-diameter tubes are conveyed through a tube conveying system. The output end of the X-ray system faces the weld of the small-diameter tube. The ray machine motion system is drivingly connected to the X-ray system. The grating opening and closing system is located between the X-ray system and the digital imaging system. The tube clamping and rotating system clamps and rotates the small-diameter tube. The digital imaging system is located below the grating opening and closing system to collect the DR image of the small-diameter tube weld and send the DR image of the small-diameter tube weld to the control system for defect detection. The image quality meter automatic placement system measures the imaging quality. The lead room protection system is assembled inside the lead room. The workpiece sorting system and the automatic marking system are both located behind the conveyance of the tube conveying system, and respectively sort and mark the small-diameter tubes after defect detection of the DR images of the small-diameter tube welds.

[0011] In the present utility model, the functions of the above-mentioned various systems are specifically as follows:

[0012] The control system is used for the overall control of the flaw detection system and the defect detection of the DR image.

[0013] The X-ray system is used to generate X-rays at high voltage to irradiate the weld of the small-diameter tube.

[0014] The ray machine motion system is used to control the swing of the ray machine head to form a certain irradiation angle for the weld of the small-diameter tube.

[0015] The grating opening and closing system is used to control the opening and closing of the grating to control the transmission dose of X-rays to the weld of the small-diameter tube.

[0016] The tube clamping and rotating system is used to clamp the small-diameter tube, rotate 72 degrees each time, rotate 4 times, and perform imaging 5 times.

[0017] The digital imaging system is used for X-ray imaging of the weld of the small-diameter tube to generate a digital ray (DR) image of the weld.

[0018] The image quality meter automatic placement system is used to control the automatic placement of the single-wire image quality meter and the double-wire image quality meter on the small-diameter tube and collect images to measure the imaging quality.

[0019] The lead room protection system is used to shield X-ray radiation.

[0020] The workpiece sorting system is used to sort the small-diameter tubes with qualified and unqualified welds and place them on different racks.

[0021] The automatic marking system is used to mark on the base metal near the weld where defects are detected.

[0022] In the present utility model, the specific structures of the above-mentioned various systems are as follows:

[0023] 1. Control System

[0024] Preferably, the control system includes a PLC and an information management system which are connected to each other.

[0025] 2. X-ray System

[0026] Preferably, the X-ray system includes an X-ray machine, a high-voltage generator and a cooler. The X-ray machine, the high-voltage generator and the cooler are all connected to the control system for control, and the high-voltage generator and the cooler are both connected to the X-ray machine.

[0027] 3. X-ray Machine Movement System

[0028] Preferably, the X-ray machine movement system includes an X-ray machine lifting cylinder and an X-ray machine swing motor. The X-ray machine lifting cylinder and the X-ray machine swing motor are both connected to the X-ray machine of the X-ray system for drive and are both connected to the control system for control.

[0029] 4. Grating Opening and Closing System

[0030] Preferably, the grating opening and closing system is located below the small-diameter pipe and includes a grating and a grating opening and closing motor. The grating opening and closing motor is connected to the grating for drive and is connected to the control system for control.

[0031] 5. Pipe Clamping and Rotating System

[0032] Preferably, the pipe clamping and rotating system includes a clamping mechanism, a clamping cylinder and a pipe rotating motor. The clamping mechanism is used for clamping the small-diameter pipe. The clamping cylinder and the pipe rotating motor are both connected to the clamping mechanism for drive and are both connected to the control system for control.

[0033] 6. Digital Imaging System

[0034] Preferably, the digital imaging system includes a detector. The detector is connected to the control system for control. The detector collects the DR image of the small-diameter pipe weld and sends the DR image of the small-diameter pipe weld to the control system. The detector is located below the grating opening and closing system.

[0035] 7. Image Quality Indicator Automatic Placement System

[0036] Preferably, the image quality meter automatic placement system includes a single-wire image quality meter, a double-wire image quality meter, a single-wire placement turntable, a single-wire rotation motor, a single-wire placement mechanism, and a double-wire placement mechanism; a number of single-wire image quality meters are provided and placed on the single-wire placement turntable, the single-wire rotation motor is drivingly connected to the single-wire placement turntable for selecting a single-wire image quality meter of a corresponding specification, and the single-wire placement mechanism is connected to the single-wire rotation motor; the double-wire placement mechanism is drivingly connected to the double-wire image quality meter to control the movement of the double-wire image quality meter, and the frequency conversion motors in the single-wire rotation motor, the single-wire placement mechanism, and the double-wire placement mechanism are all connected to the control system for control.

[0037] 8. Lead house protection system

[0038] Preferably, the lead house protection system includes a lead door switch motor, a limit inductor, and a radiation meter, and the lead door switch motor, the limit inductor, and the radiation meter are connected to the control system for control.

[0039] 9. Workpiece sorting system

[0040] Preferably, the workpiece sorting system includes a sorting cylinder, and the sorting cylinder is connected to the control system for control.

[0041] 10. Automatic marking system

[0042] Preferably, the automatic marking system includes a frequency conversion motor and a marking device, the frequency conversion motor is drivingly connected to the marking device, and is connected to the control system for control.

[0043] 11. Manual backup system

[0044] Preferably, a manual backup system is further included, and the manual backup system includes a number of manual backup buttons, and the manual backup buttons are respectively connected to the X-ray system, the ray machine movement system, the grating opening and closing system, the tube clamping and rotating system, the digital imaging system, the image quality meter automatic placement system, the lead house protection system, the workpiece sorting system, and the automatic marking system through the control system for control.

[0045] The manual backup system is used for manually operating the conveyance of small-diameter tubes, image acquisition, defect marking, image quality measurement, small-diameter tube sorting, etc. manually when the full-automatic flaw detection mode is turned off.

[0046] Advantages of the present utility model:

[0047] The small-diameter tube DR detection flaw detection system provided by the present utility model can automatically control the clamping and rotation of small-diameter tubes through the control system and the tube clamping and rotating system; can automatically control the opening and closing of the grating through the control system and the grating opening and closing system; can automatically control the placement of the image quality meter through the control system and the image quality meter automatic placement system, etc., improving the efficiency and detection quality.

[0048] The small-diameter tube DR detection and flaw detection system provided by the utility model can realize the automatic control of the placement of the image quality indicator and the marking of defects. The flaw detection system of the utility model is uniformly controlled by the upper computer information management system, with simple operation and improved flaw detection efficiency. Brief Description of the Drawings

[0049] Figure 1 It is a schematic diagram of the small-diameter tube DR detection and flaw detection system of the utility model Figure 1 ;

[0050] Figure 2 It is a schematic diagram of the small-diameter tube DR detection and flaw detection system of the utility model Figure 2 ;

[0051] Figure 3 It is a schematic structural diagram of the small-diameter tube DR detection and flaw detection system of the utility model;

[0052] Figure 4 It is a schematic diagram of the automatic marking system of the utility model;

[0053] In the figure: 1. Control system; 101. PLC; 102. Information management system; 2. X-ray system; 201. Ray machine; 202. High-voltage generator; 203. Cooler; 3. Ray machine movement system; 301. Ray machine lifting cylinder; 302. Ray machine swing motor; 4. Grating opening and closing system; 401. Grating; 402. Grating opening and closing motor; 5. Tube clamping and rotating system; 501. Clamping mechanism; 502. Clamping cylinder; 503. Tube rotating motor; 6. Digital imaging system; 601. Detector; 7. Image quality indicator automatic placement system; 701. Single-wire image quality indicator; 702. Double-wire image quality indicator; 703. Single-wire rotating motor; 704. Single-wire placement mechanism; 705. Double-wire placement mechanism; 8. Lead house protection system; 801. Lead door switch motor; 802. Limit inductor; 803. Radiation meter; 9. Workpiece sorting system; 901. Sorting cylinder; 10. Automatic marking system; 1001. Variable-frequency motor; 1002. Marking device; 11. Manual standby system. Detailed Embodiments

[0054] The following will clearly and completely describe the concept, specific structure and technical effects generated by the utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the utility model.

[0055] Embodiment 1

[0056] A small-diameter tube DR detection and flaw detection system, as Figures 1-4 shown, includes:

[0057] Control system 1;

[0058] An X-ray system 2, a ray machine movement system 3, a grating opening and closing system 4, a tube clamping and rotating system 5, a digital imaging system 6, an IQI automatic placement system 7, a lead room protection system 8, a workpiece sorting system 9, and an automatic marking system 10, each of which is controlled and connected to the control system 1 respectively;

[0059] The X-ray system 2, the ray machine movement system 3, the grating opening and closing system 4, the tube clamping and rotating system 5, the digital imaging system 6, the IQI automatic placement system 7, and the automatic marking system 10 are all located inside the lead room. Small-diameter tubes are conveyed inside the lead room through a tube conveying system. The output end of the X-ray system 2 faces the weld of the small-diameter tube. The ray machine movement system 3 is drivingly connected to the X-ray system 2. The grating opening and closing system 4 is located between the X-ray system 2 and the digital imaging system 6. The tube clamping and rotating system 5 clamps and rotates the small-diameter tube. The digital imaging system 6 is located below the grating opening and closing system 4 to collect the DR image of the small-diameter tube weld and send the DR image of the small-diameter tube weld to the control system 1 for defect detection. The IQI automatic placement system 7 measures the imaging quality. The lead room protection system 8 is assembled inside the lead room. The workpiece sorting system 9 and the automatic marking system 10 are both located behind the conveyance of the tube conveying system, and respectively sort and mark the small-diameter tubes after defect detection of the DR images of the small-diameter tube welds.

[0060] Embodiment 2

[0061] On the basis of Embodiment 1, this embodiment further elaborates on the control system 1, as Figure 1 and 2 shown. The control system 1 is used for the overall control of the flaw detection system and the defect detection of DR images. The control system 1 includes a PLC 101 and an information management system 102 that are connected to each other.

[0062] In this embodiment, the PLC 101 is used to connect the sensors, motors, and cylinders of each subsystem, receive sensor signals, and control the rotation of the motors and the extension and retraction of the cylinders. The information management system 102 (specifically the R-PCE software in the computer) is used as the upper computer to communicate with the ray machine, detector, PLC, etc., and overall control X-ray adjustment, image acquisition, image evaluation, PLC instruction execution, etc.

[0063] Embodiment 3

[0064] On the basis of Embodiment 2, this embodiment further elaborates on the X-ray system 2, as Figure 1 and 2 shown. The X-ray system 2 is used to generate high-voltage X-rays to penetrate the weld of the small-diameter tube.

[0065] The X-ray system 2 includes an X-ray machine 201, a high-voltage generator 202, and a cooler 203. The X-ray machine 201, the high-voltage generator 202, and the cooler 203 are all connected to the control system 1 for control connection, and the high-voltage generator 202 and the cooler 203 are both connected to the X-ray machine 201.

[0066] In this embodiment, the X-ray machine 201 is used to emit X-rays to penetrate the welded joint of the small-diameter pipe. The high-voltage generator 202 is used to generate the high voltage required for X-ray generation. The cooler 203 is used to cool the X-ray tube. The X-ray machine 201, the high-voltage generator 202, and the cooler 203 can be conventional structures in the art.

[0067] Embodiment 4

[0068] On the basis of Embodiment 3, this embodiment further elaborates on the X-ray machine motion system 3, as Figure 1 and 2 shown, the X-ray machine motion system 3 is used to control the swing of the head of the X-ray machine 201 to form a certain penetration angle for the welded joint of the small-diameter pipe.

[0069] The X-ray machine motion system 3 includes an X-ray machine lifting cylinder 301 and an X-ray machine swing motor 302. The X-ray machine lifting cylinder 301 and the X-ray machine swing motor 302 are both connected to the X-ray machine 201 of the X-ray system 2 for driving connection, and are both connected to the control system 1 for control connection.

[0070] In this embodiment, the X-ray machine lifting cylinder 301 is used to drive the X-ray machine 201 to lift, so that the distance between the X-ray machine 201 and the welded joint of the small-diameter pipe to be inspected can be adjusted. The X-ray machine swing motor 302 is used to drive the X-ray machine 201 to swing, so that the X-ray machine 201 and the small-diameter pipe to be inspected form an inclined penetration mode to perform elliptical imaging on the welded joint. The X-ray machine lifting cylinder 301 and the X-ray machine swing motor 302 driving the X-ray machine 201 to lift and swing can be conventional structures in the prior art.

[0071] Embodiment 5

[0072] On the basis of Embodiment 4, this embodiment further elaborates on the grating opening and closing system 4, as Figure 1 and 2 shown, the grating opening and closing system 4 is used to control the opening and closing of the grating 401 to control the transmission dose of X-rays for the welded joint of the small-diameter pipe.

[0073] The grating opening and closing system 4 is located below the small-diameter pipe and includes a grating 401 and a grating opening and closing motor 402. The grating opening and closing motor 402 is connected to the grating 401 for driving connection and is connected to the control system 1 for control connection.

[0074] In this embodiment, the grating 401 is used to block X-rays and control the dose of transmitted X-rays. The grating opening and closing motor 402 is used to adjust and control the opening and closing of the grating 401.

[0075] Embodiment 6

[0076] Based on Embodiment 5, this embodiment further elaborates on the tube clamping and rotating system 5, as Figure 1 and 2 shown. The tube clamping and rotating system 5 is used to clamp the small-diameter tube, rotate it 72 degrees each time, rotate 4 times, and perform 5 imaging operations.

[0077] The tube clamping and rotating system 5 includes a clamping mechanism 501, a clamping cylinder 502, and a tube rotating motor 503. The clamping mechanism 501 is used to clamp the small-diameter tube. Both the clamping cylinder 502 and the tube rotating motor 503 are drivingly connected to the clamping mechanism 501 and are both connected to the control system 1 for control.

[0078] In this embodiment, the clamping mechanism 501 is used to clamp the small-diameter tube. The clamping cylinder 502 is used to drive the clamping mechanism 501 to clamp the small-diameter tube, so that the small-diameter tube leaves the transmission roller path and is fixed on the clamping mechanism 501. The tube rotating motor 503 is used to drive the clamping mechanism 501 to rotate the small-diameter tube, so that the small-diameter tube rotates 72 degrees each time and rotates 4 times, thereby performing DR imaging detection. The driving structures of the clamping mechanism 501, the clamping cylinder 502, and the tube rotating motor 503 can be conventional structures in the art.

[0079] Embodiment 7

[0080] Based on Embodiment 6, this embodiment further elaborates on the digital imaging system 6, as Figure 1 and 2 shown. The digital imaging system 6 is used for X-ray imaging of the small-diameter tube weld and generates a weld digital ray (DR) image.

[0081] The digital imaging system 6 includes a detector 601. The detector 601 is connected to the control system 1 for control. The detector 601 collects the DR image of the small-diameter tube weld and sends the DR image of the small-diameter tube weld to the control system 1. The detector 601 is located below the grating opening and closing system 4.

[0082] In this embodiment, the detector 601 is used to receive the X-rays transmitted through the weld and convert them into digital signals to generate a DR image.

[0083] Embodiment 8

[0084] Based on Embodiment 7, this embodiment further elaborates on the image quality meter automatic placement system 7, as Figure 1 and 2As shown, the IQI automatic placement system 7 is used to control the automatic placement of the single-wire IQI 701 and the double-wire IQI 702 on the small-diameter pipe, and collect images to measure the imaging quality.

[0085] The IQI automatic placement system 7 includes a single-wire IQI 701, a double-wire IQI 702, a single-wire placement turntable, a single-wire rotation motor 703, a single-wire placement mechanism 704, and a double-wire placement mechanism 705; a number of single-wire IQIs 701 are provided and placed on the single-wire placement turntable, and the single-wire rotation motor 703 is drivingly connected to the single-wire placement turntable for selecting a single-wire IQI 701 of a corresponding specification, and the single-wire placement mechanism 704 is connected to the single-wire rotation motor 703; the double-wire placement mechanism 705 is drivingly connected to the double-wire IQI 702 to control the movement of the double-wire IQI 702, and the single-wire rotation motor 703, the single-wire placement mechanism 704, and the double-wire placement mechanism 705 are all connected to the control system 1 for control.

[0086] In this embodiment, the single-wire IQI 701 is used to be placed on the small-diameter pipe and jointly image with the weld of the small-diameter pipe, so as to perform single-wire measurement on the image to confirm the image sensitivity. The double-wire IQI 702 is used to be placed on the small-diameter pipe and jointly image with the weld of the small-diameter pipe, so as to perform double-wire measurement on the image to confirm the image resolution. The single-wire placement mechanism 704 is used to drive the single-wire IQI 701 to move, so that the single-wire IQI 701 reaches above the clamped small-diameter pipe. The single-wire rotation motor 703 is used to drive the single-wire placement turntable to rotate, and further used to select a single-wire IQI 701 of a corresponding specification and place it on the small-diameter pipe. The double-wire placement mechanism 705 is used to drive the double-wire IQI 702 to move, so that the double-wire IQI 702 reaches above the clamped small-diameter pipe and is placed.

[0087] As Figure 3 and 4 shown, it is a flaw detection system of an implementation manner. Two single-wire rotation motors 703 are provided, one is used to rotate the single-wire placement turntable to select a corresponding single-wire IQI 701, and the other is used to rotate and displace the single-wire placement turntable and rotate and displace it above the small-diameter pipe. The single-wire placement mechanism 704 is used to drive the single-wire IQI 701 to move horizontally. The double-wire placement mechanism 705 is used to drive the double-wire IQI 702 to move horizontally. Of course, the single-wire placement mechanism 704 and the double-wire placement mechanism 705 can also be set as linear modules, and linear modules that can also drive the single-wire IQI 701 and the double-wire IQI 702 to move vertically can also be set to meet actual requirements.

[0088] Embodiment 9

[0089] On the basis of Embodiment 8, this embodiment further elaborates on the lead room protection system 8, as Figure 1 and 2As shown, the lead room protection system 8 is used to shield X-ray radiation.

[0090] The lead room protection system 8 includes a lead door switch motor 801, a limit inductor 802, and a radiation meter 803. The lead door switch motor 801, the limit inductor 802, and the radiation meter 803 are connected to the control system 1 for control.

[0091] In this embodiment, the lead room is used to shield X-ray. Inside it, there are an X-ray system 2, a ray machine movement system 3, a grating opening and closing system 4, a tube clamping and rotating system 5, a digital imaging system 6, an image quality meter automatic placement system 7, and so on. The lead door switch motor 801 is used to drive the opening and closing of the lead door of the lead room. The limit inductor 802 is used to sense the opening and closing of the lead room door. The radiation meter 803 is used to detect whether the radiation exceeds the standard.

[0092] Embodiment 10

[0093] On the basis of Embodiment 9, this embodiment further elaborates on the workpiece sorting system 9, as Figure 1 and 2 shown, the workpiece sorting system 9 is used to sort qualified and unqualified small-diameter pipes of weld joints and place them on different racks.

[0094] The workpiece sorting system 9 includes a sorting cylinder 901. The sorting cylinder 901 is connected to the control system 1 for control.

[0095] In this embodiment, the sorting cylinder 901 is used to sort qualified and unqualified small-diameter pipes to different racks respectively. The specific workpiece sorting method is as follows: The cylinder extends and retracts to both sides respectively, sorting qualified and unqualified small-diameter pipes from the transfer roller path to the racks on both sides. The workpiece sorting system 9 can be a conventional sorting structure in the prior art.

[0096] Embodiment 11

[0097] On the basis of Embodiment 10, this embodiment further elaborates on the automatic marking system 10, as Figure 1 、 Figure 2 and Figure 4 shown, the automatic marking system 10 is used to mark on the base metal near the weld joint detected with defects.

[0098] The automatic marking system 10 includes a variable-frequency motor 1001 and a marking device 1002. The variable-frequency motor 1001 is drivingly connected to the marking device 1002 and is connected to the control system 1 for control.

[0099] In this embodiment, the variable-frequency motor 1001 is used to drive the marking device 1002 to move. The marking device 1002 is used to mark near the defective weld joint.

[0100] Embodiment 12

[0101] This embodiment is further elaborated on the basis of Embodiment 11, as Figure 1 and 2 shown, it further includes a manual backup system 11. The manual backup system 11 includes a number of manual backup buttons, and the manual backup buttons are respectively connected to the X-ray system 2, the ray machine movement system 3, the grating opening and closing system 4, the tube clamping and rotating system 5, the digital imaging system 6, the image quality meter automatic placement system 7, the lead room protection system 8, the workpiece sorting system 9, and the automatic marking system 10 through the control system 1 for control connection.

[0102] The manual backup system 11 is used to manually operate the small-diameter tube conveying, image acquisition, defect marking, image quality measurement, and small-diameter tube sorting manually when the full-automatic flaw detection mode is turned off.

[0103] In this embodiment, the operation of the X-ray system 2, the ray machine movement system 3, the grating opening and closing system 4, the tube clamping and rotating system 5, the digital imaging system 6, the image quality meter automatic placement system 7, the lead room protection system 8, the workpiece sorting system 9, and the automatic marking system 10 can be manually controlled through a number of manual backup buttons of the manual backup system 11.

[0104] For a better understanding of the present invention, the working principle of the present invention is described completely as follows:

[0105] During use, the small-diameter tube is conveyed in the lead room through the tube conveying system. After being conveyed in place, the control system 1 controls the tube clamping and rotating system 5 to clamp and rotate the small-diameter tube; the control system 1 controls the ray machine movement system 3 to act to adjust the focal length of the X-ray system 2.

[0106] The control system 1 controls the X-ray system 2 to act to generate X-rays to penetrate the welded joint of the small-diameter tube. The control system 1 controls the grating opening and closing system 4 to act to control the transmission dose of the X-rays to the welded joint of the small-diameter tube. The control system 1 controls the image quality meter automatic placement system 7 to act to collect images and measure the imaging quality.

[0107] The control system 1 controls the digital imaging system 6 to act to collect the digital radiographic DR image of the welded joint and transmits the collected DR image to the control system 1. The control system 1 identifies whether there are defects in the welded joint of the small-diameter tube in the DR image.

[0108] After the DR image of the small-diameter tube is collected, the tube clamping and rotating system 5 releases the small-diameter tube, and the small-diameter tube continues to be conveyed by the tube conveying system. When the control system 1 identifies that there are defects in the welded joint of the small-diameter tube, the control system 1 controls the automatic marking system 10 to mark the base material near the welded joint of the small-diameter tube, and at the same time, the control system 1 controls the workpiece sorting system 9 to place the unqualified small-diameter tubes on different racks.

[0109] The above has specifically described the implementation manners of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalents or substitutions are all included within the scope defined by the claims of the present utility model.

Claims

1. A small-diameter pipe DR detection and flaw detection system, characterized in that, Comprising: A control system; An X-ray system, a ray machine movement system, a grating opening and closing system, a tube clamping and rotating system, a digital imaging system, an image quality meter automatic placement system, a lead room protection system, a workpiece sorting system, and an automatic marking system, which are respectively connected to the control system for control; The X-ray system, the ray machine movement system, the grating opening and closing system, the tube clamping and rotating system, the digital imaging system, the image quality meter automatic placement system, and the automatic marking system are all located inside the lead room. Small-diameter tubes are conveyed inside the lead room through a tube conveying system. The output end of the X-ray system faces the weld of the small-diameter tube. The ray machine movement system is drivingly connected to the ray machine of the X-ray system. The grating opening and closing system is located between the X-ray system and the digital imaging system. The tube clamping and rotating system clamps and rotates the small-diameter tube. The digital imaging system is located below the grating opening and closing system to collect the DR image of the small-diameter tube weld and send the DR image of the small-diameter tube weld to the control system for defect detection. The image quality meter automatic placement system measures the imaging quality. The lead room protection system is assembled inside the lead room. The workpiece sorting system and the automatic marking system are both located behind the conveyance of the tube conveying system, and respectively sort and mark the small-diameter tubes after defect detection of the DR images of the small-diameter tube welds.

2. The flaw detection system according to claim 1, wherein, The control system includes a PLC and an information management system that are connected to each other.

3. The flaw detection system according to claim 1, characterized in that, The X-ray system includes an X-ray machine, a high-voltage generator, and a cooler. The X-ray machine, the high-voltage generator, and the cooler are all connected to the control system for control. The high-voltage generator and the cooler are both connected to the X-ray machine.

4. The flaw detection system according to claim 1, characterized in that The ray machine movement system includes an X-ray machine lifting cylinder and an X-ray machine swing motor. The X-ray machine lifting cylinder and the X-ray machine swing motor are both drivingly connected to the X-ray machine of the X-ray system and are both connected to the control system for control.

5. The flaw detection system according to claim 1, wherein The grating opening and closing system is located below the small-diameter tube and includes a grating and a grating opening and closing motor. The grating opening and closing motor is drivingly connected to the grating and is connected to the control system for control.

6. The flaw detection system according to claim 1, characterized in that, The tube clamping and rotating system includes a clamping mechanism, a clamping cylinder, and a tube rotating motor. The clamping mechanism is used to clamp the small-diameter tube. The clamping cylinder and the tube rotating motor are both drivingly connected to the clamping mechanism and are both connected to the control system for control.

7. The flaw detection system according to claim 1, wherein The digital imaging system includes a detector. The detector is connected to the control system for control. The detector collects the DR image of the small-diameter tube weld and sends the DR image of the small-diameter tube weld to the control system. The detector is located below the grating opening and closing system.

8. The flaw detection system according to claim 1, wherein The image quality meter automatic placement system includes a single-wire image quality meter, a double-wire image quality meter, a single-wire placement turntable, a single-wire rotating motor, a single-wire placement mechanism, and a double-wire placement mechanism. A number of single-wire image quality meters are provided and placed on the single-wire placement turntable. The single-wire rotating motor is drivingly connected to the single-wire placement turntable for selecting a single-wire image quality meter of a corresponding specification. The single-wire placement mechanism is connected to the single-wire rotating motor. The double-wire placement mechanism is drivingly connected to the double-wire image quality meter to control the movement of the double-wire image quality meter. The single-wire rotating motor, the single-wire placement mechanism, and the double-wire placement mechanism are all connected to the control system for control.

9. The flaw detection system according to claim 1, wherein The lead room protection system includes a lead door switch motor, a limit inductor, and a radiation meter, and the lead door switch motor, the limit inductor, and the radiation meter are connected to the control system for control.

10. The flaw detection system according to claim 1, characterized in that, The workpiece sorting system includes a sorting cylinder, and the sorting cylinder is connected to the control system for control; The automatic marking system includes a variable frequency motor and a marking device, the variable frequency motor is drivingly connected to the marking device and is connected to the control system for control; It further includes a manual backup system, and the manual backup system includes a number of manual backup buttons, and the manual backup buttons are respectively connected to the X-ray system, the ray machine movement system, the grating opening and closing system, the tube clamping and rotating system, the digital imaging system, the image quality meter automatic placement system, the lead room protection system, the workpiece sorting system, and the automatic marking system through the control system for control.

Images