A high-efficiency radiographic inspection equipment for pressure vessel welds

Abstract

The present invention discloses a high-efficiency radiographic inspection device for welds of pressure vessels, which relates to the technical field of weld inspection. The high-efficiency radiographic inspection device for welds of pressure vessels comprises: a ray emitter body; a detector body, wherein the detector body is located above the ray emitter body. In the inspection state, the relative positions of the ray emitter body and the detector body remain unchanged, and a frontal inspection of the weld of the container to be inspected can be performed directly between the ray emitter body and the detector body; a carrier, wherein a wheeled vehicle is provided above the carrier, and support wheels are installed above the wheeled vehicle. The support wheels are located on both sides below the container to be inspected and are used to support containers of different diameters to be inspected. The high-efficiency radiographic inspection device for welds of pressure vessels can achieve deflection of the container to be inspected by providing a dominant arc ring body, aligning the center of the dominant arc ring body with the center of the container to be inspected, and controlling the movement and deflection of the dominant arc ring body.

Description

Technical Field

[0001] The present invention relates to the technical field of weld detection, in particular to a high-efficiency pressure vessel weld ray detection device. Background Art

[0002] In the inspection of large container welds, it is necessary to use X-ray real-time imaging equipment. The X-ray emitter of the X-ray real-time imaging equipment is placed inside the large container, and the X-ray receiver of the X-ray real-time imaging equipment is placed close to the outside of the large container weld. At the same time, the X-ray emitter and the X-ray receiver are controlled to rotate along the weld of the large container for one circle, and real-time imaging inspection is performed on each area of ​​the weld of the large container in turn, so as to achieve high-precision defect detection effect of the large container weld.

[0003] In order to keep the inspection image stable, the detector and emitter are generally set to be stationary, and the container is moved by a carrier. During inspection, the detector and emitter are facing the weld of the container.

[0004] When tilt detection is required, it is necessary to manually adjust the angles of the detector and the emitter, or manually adjust the angle of the weld of the container to be tested, so that the weld can be detected in an inclined posture. The overall operation is inconvenient and difficult to adjust. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a high-efficiency pressure vessel weld radiographic inspection equipment, which solves the problem of needing to manually adjust the angles of the detector and the emitter, or manually adjust the angle of the weld of the container to be tested, so that the weld can be inspected in an inclined posture, resulting in overall inconvenient operation and difficult adjustment.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency pressure vessel weld radiographic inspection equipment, comprising:

[0007] ray emitter body;

[0008] The detector body is located above the ray emitter body. In the detection state, the relative positions of the ray emitter body and the detector body remain unchanged. The weld of the container to be tested is directly opposite the ray emitter body and the detector body, so that a frontal detection can be performed;

[0009] A carrier, wherein a wheeled vehicle is provided above the carrier, and support wheels are installed above the wheeled vehicle, and the support wheels are located on both sides below the container to be tested, and are used to support containers to be tested of different diameters;

[0010] A major arc ring body, the major arc ring body is located below and outside the container to be tested, and the center of the major arc ring body is concentric with the center of the container to be tested. Clamping components capable of clamping the container to be tested from both sides are provided on both sides of the major arc ring body;

[0011] A major arc ring support frame is located in the area below the major arc ring body and is used to support the major arc ring body. The major arc ring body has circumferential freedom on the major arc ring support frame;

[0012] A wheel moving assembly is provided on the vehicle and is used to drive the superior arc ring support frame and the wheel moving along the X-axis, so that the superior arc ring body can be displaced along the X-axis, forming a state in which the weld deviates from the ray emitter body and the detector body along the X-axis;

[0013] The weld resetting mechanism is arranged on the carrier and is used to drive the main body of the superior arc ring to deflect when the main body of the superior arc ring moves on the X-axis, so that the weld returns to the position between the ray emitter body and the detector body in an inclined posture.

[0014] Furthermore, the dominant arc ring support frame includes a base plate, a middle frame is fixedly provided in the middle of the upper surface of the base plate, and side frames are fixedly provided on both sides of the upper surface of the base plate. The dominant arc ring body is confined within the side frame and the middle frame, and the dominant arc ring body has freedom in its own circumferential direction.

[0015] Furthermore, the weld resetting mechanism includes a weld resetting mechanism, and the weld resetting mechanism includes:

[0016] a second wedge block, the second wedge block being fixed to the wheelbarrow, and a first wedge block being provided on one side of the second wedge block, the wheelbarrow moving assembly being used to push the first wedge block in the Y-axis direction, so that the first wedge block pushes the wheelbarrow and the major arc ring support frame to move in the X-axis through the second wedge block;

[0017] A carrier plate, the carrier plate is located on one side of the main arc ring body, a slider is provided on the carrier plate, and a spiral groove adapted to the slider is provided on one side of the main arc ring body;

[0018] The pushing arm is used to connect the carrier plate and the first wedge block, so that the first wedge block can push the carrier plate on the Y axis, forming a state in which the slider pushes the main body of the major arc ring to deflect through the spiral groove.

[0019] Furthermore, the relationship between the inclination of the first wedge block, the second wedge block and the helix angle of the spiral groove is defined as: tanc = ;

[0020] Where c is the helix angle of the spiral groove, α is the deflection angle required for the weld to align with the ray emitter body and the detector body after the main arc ring body moves along the X axis, is the slope of the first wedge block and the second wedge block.

[0021] Furthermore, the pushing arm includes:

[0022] A second connecting arm, the second connecting arm is fixed to one side of the carrier plate and arranged along the Y-axis, and an L-shaped bracket is provided below the second connecting arm;

[0023] The first connecting arm is fixed above the first wedge block and is arranged along the X-axis direction. The end of the first connecting arm away from the first wedge block is fixed with a second Z-axis guide rail, so that the second connecting arm can move along the Z-axis on the second Z-axis guide rail.

[0024] Furthermore, the side frame is provided with a second Y-axis guide rail for the L-shaped bracket to move along the Y-axis.

[0025] Furthermore, the slider includes an outer cylinder fixed on the carrier plate, an inner rod inserted at one end of the outer cylinder, and a spring for connecting the outer cylinder and the inner rod. The extension and contraction amount of the slider is greater than the maximum displacement of the superior arc ring support frame along the X-axis.

[0026] Furthermore, a Z-axis moving component for driving the superior arc ring support frame to rise and fall is provided in the carrier, and the superior arc ring support frame can slide along the Z-axis on the wheel vehicle when rising and falling.

[0027] Furthermore, the Z-axis moving assembly includes a Z-axis screw rod, the upper end of which is rotatably mounted on the wheel carriage, and the Z-axis screw rod is connected to a second driving structure for driving the Z-axis screw rod to rotate;

[0028] A Z-axis nut is threadedly connected to the Z-axis screw rod, and the Z-axis nut and the superior arc ring support frame are fixed to each other.

[0029] Furthermore, a second X-axis guide rail for guiding the second driving structure is provided in the carrier.

[0030] The present invention has the following beneficial effects:

[0031] This high-efficiency pressure vessel weld radiographic inspection equipment, by setting a dominant arc ring body and making the center of the dominant arc ring body coincide with the center of the container to be tested, controls the movement and deflection of the dominant arc ring body to achieve deflection of the container to be tested. In addition, due to the provision of a weld reset mechanism, deflection can be achieved during movement, achieving the purpose of automatic reset.

[0032] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an appearance diagram of the present invention;

[0034] Figure 2 is the detection state diagram of the present invention, wherein Figure 2 (a) in the figure is the detection state of the first detection. Figure 2(b) in the figure is the secondary detection state of tilt detection;

[0035] Figure 3 It is a structural schematic diagram of the vehicle of the present invention;

[0036] Figure 4 A cutaway view of the vehicle of the present invention;

[0037] Figure 5 is a schematic diagram of the clamping assembly of the present invention;

[0038] Figure 6 This is a schematic structural diagram of the superior arc ring support frame of the present invention;

[0039] Figure 7 This is a cross-sectional view of the main body of the dominant arc ring of the present invention;

[0040] Figure 8 This is a comparison diagram of the deflection angles of containers with different diameters to be tested according to the present invention, wherein Figure 8 (a) is the state diagram of the large diameter container after deflection. Figure 8 (b) is the state diagram of the small diameter container after deflection;

[0041] Figure 9 Schematic diagram of the structure of the connecting arm of the present invention;

[0042] Figure 10 This is a diagram showing the coordination of wedge-shaped block 1 and wedge-shaped block 2 according to the present invention;

[0043] Figure 11 It is a top view of wedge block 1 and wedge block 2 of the present invention.

[0044] In the figure, 1. first mounting frame; 2. container to be tested; 3. centering mechanism; 31. main body of superior arc ring; 311. spiral groove; 32. clamping assembly; 321. carrier; 322. driving structure; 323. hinged rod; 324. clamping plate; 325. bidirectional screw; 326. clamping nut; 33. reinforcing rod; 4. supporting wheel; 41. wheel cart; 411. first Z-axis guide rail; 42. wheel cart moving assembly; 421. pushing screw; 422. first nut; 423. first motor; 43. Z-axis moving assembly; 431. second driving structure; 432. Z-axis nut; 433. Z-axis screw; 44. second X-axis guide rail; 5. superior arc ring Support frame; 51. Base plate; 52. Side frame; 521. Second Y-axis guide rail; 53. Middle frame; 531. Upper extension plate; 532. First Z-axis guide groove; 6. Distance sensor; 7. Ray emitter body; 8. Weld reset mechanism; 81. First wedge block; 82. Second wedge block; 83. First connecting arm; 84. First Y-axis guide rail; 85. Second Z-axis guide rail; 86. Second connecting arm; 87. L-shaped bracket; 88. Slider; 881. Outer cylinder; 882. Inner rod; 89. Carrier plate; 9. Bottom rail; 10. Ray emitter mounting tube; 11. Second mounting frame; 12. Detector X-axis rail; 13. Carrier; 14. Detector body. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] The following is based on Figures 1-11 The invention describes a high-efficiency pressure vessel weld radiographic inspection device provided by an embodiment of the invention.

[0047] See also Figure 1 An embodiment of the present invention provides a high-efficiency radiographic inspection device for pressure vessel welds, including a lead room. A first mounting frame 1 is provided on a side of the lead room away from a door. The first mounting frame 1 is used to mount a ray emitter mounting tube 10. An ray emitter body 7 is assembled at one end of the ray emitter mounting tube 10 away from the first mounting frame 1 for emitting X-rays. The first mounting frame 1 should be assembled with a mechanism capable of raising or lowering the ray emitter mounting tube 10 so that the height of the ray emitter body 7 is adapted to the diameter of the container 2 to be tested, such as a screw-type linear guide.

[0048] A second mounting bracket 11 is provided on one side near the center of the lead room, and a detector X-axis rail 12 is provided on the second mounting bracket 11 for sliding along the vertical direction. A slidable detector body 14 is assembled on the detector X-axis rail 12 along the X-axis direction. The detector body 14 can slide in the X-axis direction by using a screw-type linear guide rail. The detector X-axis rail 12 can also actively move along the Z-axis on the second mounting bracket 11, and the specific drive can also be carried out by a screw-type linear guide rail to enable the detector body 14 to be aligned with the weld.

[0049] A bottom rail 9 is also provided in the lead room, and a movable carrier 13 is provided on the bottom rail 9. The carrier 13 is used to carry the container 2 to be tested and drive the container 2 to be tested to move in the lead room. In the initial detection state, the weld of the container 2 to be tested is adjusted to be just above, and the container 2 to be tested moves axially. In the detection state, the relative position of the ray emitter body 7 and the detector body 14 remains unchanged, so that the weld of the container 2 to be tested is located between the ray emitter body 7 and the detector body 14, so that a frontal detection can be performed and a detection result can be obtained.

[0050] In order to obtain the state of the weld more accurately, the present invention also performs a secondary inspection on the weld. This inspection is performed with the weld tilted. Figure 2 As shown, Figure 2 (a) is the state of the container 2 to be tested during one test. Figure 2 (b) in the figure shows the state of the container 2 to be tested during the secondary test.

[0051] In order to achieve Figure 2 In the state (b), the following solution is provided in the embodiment of the present invention:

[0052] like Figure 2-Figure 5A wheelbarrow 41 is provided above the carrier 13, and support wheels 4 are installed above the wheelbarrow 41. The support wheels 4 are located on both sides below the container 2 to be tested, and are used to support containers 2 to be tested with different diameters. A mechanism for driving the two support wheels 4 to move closer to or away from each other should also be assembled on the wheelbarrow 41. The mechanism can be implemented by a screw rod, a cylinder, etc., which is a common technology in the prior art and will not be described in detail here. A centering mechanism 3 is also provided, which includes a major arc ring body 31. The major arc ring body 31 is located at the outer periphery below the container 2 to be tested, and the center of the major arc ring body 31 is concentric with the center of the container 2 to be tested. A major arc ring support frame 5 is provided in the area near the bottom of the major arc ring body 31. The major arc ring support frame 5 is installed on the carrier 13, and has X-axis and Z-axis degrees of freedom on the carrier 13. The major arc ring body 31 has circumferential degrees of freedom on the major arc ring support frame 5. Clamping assemblies 32 that can clamp the container 2 to be tested from both sides are provided on both sides of the major arc ring body 31. After the clamping assembly 32 clamps the container 2 to be tested, the movement of the major arc ring body 31 can be consistent with the movement of the container 2 to be tested. For example, when the major arc ring body 31 moves, the container 2 to be tested also moves accordingly. When the major arc ring body 31 deflects, the container 2 to be tested deflects accordingly. The present invention uses the movement and rotation of the major arc ring body 31 to adjust the movement and rotation of the container 2 to be tested, so that the weld of the container 2 to be tested can reach Figure 2 The state of (b).

[0053] Preferably, a distance measuring sensor 6 is provided on the major arc ring support frame 5 to detect the distance between the major arc ring support frame 5 and the container 2 to be tested, thereby adjusting the height of the major arc ring support frame 5 to make the container 2 to be tested concentric with the major arc ring body 31.

[0054] like Figure 3-Figure 7 As shown, the clamping assembly 32 mentioned above can be any structure that can clamp the container 2 to be tested. In this embodiment, one of the clamping structures is taken as an example. Figure 3-Figure 5 As shown, the clamping assembly 32 includes a carrier 321, and an inclined reinforcement rod 33 is assembled between the carrier 321 and the superior arc ring body 31. The carrier 321 is arranged on both sides of the superior arc ring body 31 and is arranged along its axial direction. A bidirectional screw rod 325 is rotatably installed on the carrier 321, and a symmetrical clamping nut 326 is provided on the bidirectional screw rod 325. The rotation directions of the threads at both ends of the bidirectional screw rod 325 are opposite, and a hinged rod 323 is hinged on the clamping nut 326. The other ends of the two hinged rods 323 on the same bidirectional screw rod 325 are hinged with a splint 324. A driving structure 322 that can drive the bidirectional screw rod 325 to rotate is assembled on the carrier 321. The driving structure 322 is assembled by a motor and a bevel gear. The motor can also be directly connected to the bidirectional screw rod 325. It is a commonly used technology in the prior art and will not be described here.

[0055] In this embodiment, when the driving structure 322 drives the bidirectional screw 325 to rotate, the two clamping nuts 326 move closer to or away from each other, thereby adjusting the position of the clamping plate 324 through the hinge rod 323 to achieve the clamping operation. The reason for adopting this clamping method is that this method can greatly reduce the length of the clamping assembly 32 in the X direction.

[0056] like Figure 3 and Figure 4 As shown, the above-mentioned specific method for achieving the concentricity of the center of the major arc ring body 31 and the center of the container to be tested 2 is as follows: first, the distance between the support wheels 4 on both sides is adjusted to adapt to the diameter of the container to be tested 2, the distance between the center of the major arc ring body 31 and the center of the container to be tested 2 is calculated by the distance between the major arc ring body 31 and the lower side of the container to be tested 2, and the Z-axis moving assembly 43 installed in the carrier 13 is used to drive the major arc ring support frame 5 to rise and fall so that the two are concentric.

[0057] Specifically, in this embodiment, one of the Z-axis moving components 43 is used as an example for explanation. The Z-axis moving component 43 includes a Z-axis screw rod 433. The lower end of the Z-axis screw rod 433 is rotatably mounted on a moving seat, and the moving seat is slidably mounted on the carrier 13. The upper end of the Z-axis screw rod 433 is rotatably mounted on the wheelbarrow 41. A second driving structure 431 for driving the Z-axis screw rod 433 to rotate is also provided on the moving seat (the second driving structure 431 is composed of a motor and a bevel gear, which is a commonly used technology in the prior art and is not described here. The motor can also be directly connected to the Z-axis screw rod 433). A Z-axis nut 432 is threadedly connected to the Z-axis screw rod 433. The Z-axis nut 432 is fixed to the superior arc ring support frame 5, so that when the Z-axis nut 432 is raised or lowered, it can drive the superior arc ring support frame 5 and the superior arc ring body 31 to rise or fall, thereby adjusting the height of the superior arc ring body 31 so that its height adapts to the height of the container 2 to be tested.

[0058] It is preferable to provide an X-axis second guide rail 44 in the carriage 13 for guiding the movable base.

[0059] Specifically, according to the above content, when the ray emitter body 7 and the detector body 14 are fixed, the detection state is changed from Figure 2 In order to move from state (a) to state (b), the container 2 to be tested needs to be moved to the left and rotated clockwise. Therefore, it is only necessary to control the main body 31 of the major arc ring to move to the left and then deflect clockwise. Therefore, a wheelbarrow moving assembly 42 is provided here. The wheelbarrow moving assembly 42 is provided on the carrier 13. It is not only used to drive the wheelbarrow 41 to move along the X-axis, but also used to drive the major arc ring support frame 5 to move along the X-axis. When the major arc ring support frame 5 moves and pushes the container 2 to be tested, the support wheel 4 moves along with it, so that it always supports the container 2 to be tested. The major arc ring support frame 5 drives the main body 31 to move as a result. Figure 2In the first step from (a) to (b), the weld is horizontally offset from the ray emitter body 7 and the detector body 14 on the X-axis.

[0060] Then, the main body 31 of the superior arc ring needs to be deflected so that the weld returns to the position between the ray emitter body 7 and the detector body 14. Therefore, a weld resetting mechanism 8 is provided. The weld resetting mechanism 8 is provided on the carrier 13 and is used to drive the main body 31 of the superior arc ring to deflect when the main body 31 of the superior arc ring moves on the X-axis so that the weld returns to the position between the ray emitter body 7 and the detector body 14 in an inclined posture. Figure 2 (b) state in .

[0061] Specific reference Figure 4 and Figure 6 As shown, the above-mentioned superior arc ring support frame 5 includes a base plate 51 (the above-mentioned Z-axis nut 432 is fixed to the base plate 51), a middle frame 53 is fixedly provided in the middle of the upper surface of the base plate 51, and side frames 52 are fixedly provided on both sides of the upper surface of the base plate 51. The superior arc ring body 31 is limited in the side frames 52 and the middle frame 53, and the superior arc ring body 31 has freedom in its own circumferential direction, that is, when the side frames 52 and the middle frame 53 are displaced, the superior arc ring body 31 will also be displaced, but the superior arc ring body 31 can also rotate on the side frames 52 and the middle frame 53, providing conditions for the deflection of the superior arc ring body 31.

[0062] Combine Figure 3 、 Figures 9-11 As shown, specifically, the weld resetting mechanism 8 mentioned above includes a second wedge block 82, a carrier plate 89 and a pushing arm.

[0063] Specifically, the second wedge block 82 is fixed to the wheelbarrow 41, and a first wedge block 81 is provided on one side of the second wedge block 82. The wheelbarrow moving assembly 42 is used to push the first wedge block 81 in the Y-axis direction, so that the first wedge block 81 can push the wheelbarrow 41 and the major arc ring support frame 5 to move on the X-axis through the second wedge block 82, that is, the wheelbarrow 41 and the major arc ring support frame 5 are pushed on the X-axis by means of the wedge block; Figures 9-11 As shown, the wheeled vehicle moving assembly 42 includes a push rod 421, which is oriented in the Y-axis direction and is rotatably mounted above the vehicle 13. A first nut 422 is provided on the push rod 421. The first nut 422 can drive the first wedge block 81 to move along the Y-axis. The first wedge block 81 can then drive the second wedge block 82 to move along the X-axis. The wheeled vehicle 41 is fixedly connected to the second wedge block 82, achieving the purpose of moving the wheeled vehicle 41 along the X-axis. A first X-axis guide rail is provided on the vehicle 13 to guide the second wedge block 82. The push rod 421 is connected to a first motor 423 to drive its rotation.

[0064] Preferably, a first Y-axis guide rail 84 for guiding the first wedge block 81 along the Y-axis is provided on the upper surface of the vehicle 13 .

[0065] The above-mentioned carrier plate 89 is located on one side of the major arc ring body 31. A slider 88 is provided on the carrier plate 89. A spiral groove 311 adapted to the slider 88 is provided on one side of the major arc ring body 31. The pushing arm is used to connect the carrier plate 89 and the first wedge block 81.

[0066] In this embodiment, when the first wedge block 81 pushes the wheelbarrow 41 and the superior arc ring support frame 5 to move along the X-axis, it can also push the carrier plate 89 on the Y-axis through the pushing arm, so that the carrier plate 89 drives the slider 88 to move in the spiral groove 311, thereby forming a deflected state of the superior arc ring body 31.

[0067] Preferably, since the main body 31 of the superior arc ring is displaced on the X-axis, in order to ensure that the slider 88 can always push the main body 31 of the superior arc ring to deflect, the slider 88 is set as a retractable structure. The slider 88 includes an outer cylinder 881 fixed on the carrier plate 89, an inner rod 882 inserted at one end of the outer cylinder 881, and a spring for connecting the outer cylinder 881 and the inner rod 882. The spring is always in a compressed state. The telescopic amount of the slider 88 is greater than the maximum displacement of the superior arc ring support frame 5 along the X-axis, ensuring that the slider 88 can always slide in the spiral groove 311.

[0068] Preferably, in order to achieve the above-mentioned deflection angle of the major arc ring body 31 to be able to reset to the state between the ray emitter body 7 and the detector body 14, the relationship between the inclination of the first wedge block 81, the second wedge block 82 and the helical lead angle of the spiral groove 311 is defined as: tanc = ;

[0069] Wherein, c is the helix angle of the spiral groove 311, α is the deflection angle required for the weld to be deflected to align with the ray emitter body 7 and the detector body 14 after the main arc ring body 31 moves along the X axis, is the slope of the first wedge block 81 and the second wedge block 82.

[0070] Since the Z-axis moving assembly 43 also needs to drive the superior arc ring support frame 5 to rise and fall, the height of the carrier plate 89 and the slider 88 actually needs to rise and fall together with the superior arc ring support frame 5, so the pushing arm needs to adapt to the lifting amount of the carrier plate 89, and the pushing arm includes a second connecting arm 86 and a first connecting arm 83.

[0071] like Figure 10The second connecting arm 86 is fixed to one side of the carrier plate 89 and is arranged along the Y-axis. An L-shaped bracket 87 is provided below the second connecting arm 86. A second Y-axis guide rail 521 is provided on the side frame 52 for the L-shaped bracket 87 to move along the Y-axis. The first connecting arm 83 is fixed above the first wedge block 81 and is arranged along the X-axis direction. A second Z-axis guide rail 85 is fixed at one end of the first connecting arm 83 away from the first wedge block 81, so that the second connecting arm 86 can move along the Z-axis on the second Z-axis guide rail 85.

[0072] like Figure 6 and Figure 7 In order to ensure that the wheelbarrow 41 can drive the superior arc ring support frame 5 to move when it moves on the X-axis, a Z-axis first guide rail 411 is set on one side of the wheelbarrow 41, and an upper extension plate 531 is set above the middle frame 53. A Z-axis first guide groove 532 adapted to the Z-axis first guide rail 411 is set on the upper extension plate 531, so that when the wheelbarrow 41 moves along the X-axis, the superior arc ring support frame 5 can also move together. When the Z-axis moving component 43 drives the superior arc ring support frame 5 to rise and fall, the wheelbarrow 41 will not rise or fall.

[0073] It should be noted that, in this embodiment, the deflection angles of the containers 2 to be tested with different diameters are preset to be different. The larger the diameter, the larger the deflection angle can be set, that is, the greater the displacement of the main arc ring body 31 pushed by the wheel moving component 42 is set, such as Figure 8 (a) in the figure. On the contrary, the smaller the diameter of the container 2 to be tested, the smaller the deflection angle. Figure 8 (b) in the figure; that is, before measurement, the measuring angle of the arc ring body 31 is determined according to the diameter of the container 2 to be measured, thereby obtaining the given movement amount of the wheel moving component 42 on the arc ring body 31. The weld of the container 2 to be measured can be directly adjusted to the desired position through the operation of the wheel moving component 42.

Claims

1. A high-efficiency pressure vessel weld radiographic inspection equipment, characterized in that: include: ray emitter body (7); A detector body (14), wherein the detector body (14) is located above the ray emitter body (7), and the relative positions of the ray emitter body (7) and the detector body (14) remain unchanged in a detection state; A carrier (13), wherein a wheelbarrow (41) is provided above the carrier (13), and support wheels (4) are installed above the wheelbarrow (41), and the support wheels (4) are located on both sides below the container to be tested (2) and are used to support containers to be tested (2) of different diameters; A major arc ring body (31), the major arc ring body (31) is located on the periphery below the container to be tested (2), and the center of the major arc ring body (31) is concentric with the center of the container to be tested (2), and clamping components (32) capable of clamping the container to be tested (2) from both sides are provided on both sides of the major arc ring body (31); A major arc ring support frame (5), the major arc ring support frame (5) is located in a region below the major arc ring body (31) and is used to support the major arc ring body (31), and the major arc ring body (31) has circumferential freedom on the major arc ring support frame (5); a wheeled cart moving assembly (42), the wheeled cart moving assembly (42) being arranged on the carrier (13) and being used for driving the superior arc ring support frame (5) and the wheeled cart (41) to move along the X-axis, so that the superior arc ring body (31) can be displaced along the X-axis, thereby forming a state in which the weld deviates from the ray emitter body (7) and the detector body (14) along the X-axis; A weld seam resetting mechanism (8) is provided on the carrier (13) and is used to drive the superior arc ring body (31) to deflect when the superior arc ring body (31) moves on the X-axis, so that the weld seam returns to between the ray emitter body (7) and the detector body (14) in an inclined posture.

2. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 1, characterized in that: The dominant arc ring support frame (5) comprises a bottom plate (51), a middle frame (53) is fixedly provided in the middle of the upper surface of the bottom plate (51), and side frames (52) are fixedly provided on both sides of the upper surface of the bottom plate (51), the dominant arc ring body (31) is limited in the side frames (52) and the middle frame (53), and the dominant arc ring body (31) has a degree of freedom in its own circumferential direction.

3. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 2, characterized in that: The weld seam resetting mechanism (8) comprises: a second wedge block (82), the second wedge block (82) being fixed to the wheelbarrow (41), and a first wedge block (81) being provided on one side of the second wedge block (82), the wheelbarrow moving assembly (42) being used to push the first wedge block (81) in the Y-axis direction, so that the first wedge block (81) pushes the wheelbarrow (41) and the superior arc ring support frame (5) to move in the X-axis through the second wedge block (82); A carrier plate (89), the carrier plate (89) being located on one side of the main arc ring body (31), a slider (88) being provided on the carrier plate (89), and a spiral groove (311) adapted to the slider (88) being provided on one side of the main arc ring body (31); A push arm is used to connect the carrier plate (89) and the first wedge block (81), so that the first wedge block (81) can push the carrier plate (89) on the Y axis, forming a state in which the slider (88) pushes the main arc ring body (31) to deflect through the spiral groove (311).

4. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 3, characterized in that: The relationship between the inclination of the first wedge block (81), the second wedge block (82) and the helical angle of the spiral groove (311) is defined as: tanc = ; Wherein, c is the helical rise angle of the spiral groove (311), α is the deflection angle required for the weld to be deflected to align with the ray emitter body (7) and the detector body (14) after the main arc ring body (31) moves along the X-axis, is the inclination of the first wedge-shaped block (81) and the second wedge-shaped block (82).

5. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 4, characterized in that: The push arm comprises: A second connecting arm (86), the second connecting arm (86) is fixed to one side of the carrier plate (89), and the second connecting arm (86) is arranged along the Y axis, and an L-shaped bracket (87) is provided below the second connecting arm (86); A first connecting arm (83) is fixed above the first wedge block (81), and the first connecting arm (83) is arranged along the X-axis direction. A second Z-axis guide rail (85) is fixed to one end of the first connecting arm (83) away from the first wedge block (81), so that the second connecting arm (86) can move along the Z-axis on the second Z-axis guide rail (85).

6. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 5, characterized in that: The side frame (52) is provided with a second Y-axis guide rail (521) for the L-shaped bracket (87) to move along the Y-axis.

7. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 6, characterized in that: The slider (88) comprises an outer cylinder (881) fixed on a carrier plate (89), an inner rod (882) inserted at one end of the outer cylinder (881), and a spring for connecting the outer cylinder (881) and the inner rod (882). The extension and contraction amount of the slider (88) is greater than the maximum displacement of the superior arc ring support frame (5) along the X-axis.

8. The high-efficiency pressure vessel weld radiographic inspection equipment according to any one of claims 1 to 7, characterized in that: A Z-axis moving assembly (43) for driving the superior arc ring support frame (5) to rise and fall is provided in the carrier (13), and the superior arc ring support frame (5) can slide along the Z-axis on the wheelbarrow (41) when rising and falling.

9. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 8, characterized in that: The Z-axis moving assembly (43) includes a Z-axis screw rod (433), the upper end of which is rotatably mounted on the wheelbarrow (41), and the Z-axis screw rod (433) is connected to a second driving structure (431) for driving the Z-axis screw rod (433) to rotate. A Z-axis nut (432) is threadedly connected to the Z-axis screw rod (433), and the Z-axis nut (432) and the superior arc ring support frame (5) are fixed to each other.

10. The high-efficiency pressure vessel weld radiographic inspection equipment according to claim 9, characterized in that: An X-axis second guide rail (44) for guiding the second drive structure (431) is provided in the carrier (13).

Images