Pressure vessel cavity detection equipment

Abstract

The present invention discloses a pressure vessel cavity detection device, which relates to the field of pressure vessel detection technology, and includes a mounting ring that can move along the distribution direction of a horizontal pressure vessel, and a first probe ring and a second probe ring that can move synchronously therewith are provided on one side of the mounting ring, and the first probe ring and the second probe ring are connected by multiple groups of positioning units, and the multiple groups of positioning units are equidistantly distributed along a circular trajectory. When the first probe ring and the second probe ring move into the interior of the pressure vessel, the positioning units contact the inner wall of the pipe. It also includes two groups of driving units that can be located in the inner cavity of the pressure vessel and move synchronously, and both groups of driving units are provided with multiple detection cameras equidistantly distributed along the circular trajectory. The present invention enables the entire detection device to be tightly and stably connected to the cavity of the pressure vessel, and maintains the stability of the entire detection device during the detection process. The detection operation can be quickly performed on the inner cavity of the pressure vessel, thereby improving the efficiency of the detection work.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessel detection, and in particular to pressure vessel cavity detection equipment. Background Art

[0002] A pressure vessel is a closed device that contains gas or liquid and bears a certain pressure. According to the purpose, it is divided into reaction vessels, heat transfer vessels, separation vessels and storage and transportation vessels. A horizontal pressure vessel is a special form of pressure vessel, which is mainly used for storing and processing fluids. The design and structural characteristics of this type of container determine that it can withstand the longitudinal bending moment and shear force generated by the weight of the container and the weight of the stored materials, as well as the local reaction force in the support area. Due to the characteristics of the support method of horizontal pressure vessels, there is a certain degree of complexity in the design process. For example, the design steps usually first determine the wall thickness based on the operating pressure (internal pressure, external pressure or normal pressure), and then design based on deadweight, wind, earthquake and other additional loads.

[0003] In addition, the structure of a horizontal pressure vessel usually consists of six major parts: the cylinder, head, flange, sealing element, opening and pipe, and support. It may also be equipped with safety devices, meters, and parts with completely different production process functions. During the production process of a horizontal pressure vessel, it is necessary to perform defect detection operations on its cylinder to ensure that the cylinder meets the quality standards to ensure the quality of the cylinder when the pressure vessel is used to store chemical liquids for a long time.

[0004] Most of the existing inspection equipment for inspecting pressure vessels uses a handheld industrial inspection camera to probe into the inner cavity of the container to perform defect inspection operations on the inner wall of the container. However, during the inspection operation, due to the large volume of the horizontal pressure vessel, the inspection operation takes a long time. In addition, during the detection process of the industrial inspection camera, shaking and deviation are prone to occur, affecting the accuracy of the inspection work. Therefore, under the premise that it takes a long time to implement the inspection operation on a large-volume horizontal pressure vessel, the deviation of the inspection will further reduce the efficiency of the inspection work. Therefore, the present application provides a pressure vessel cavity inspection device to meet the needs. Summary of the invention

[0005] In response to the above problems, the present application provides a pressure vessel cavity detection device.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a pressure vessel cavity detection device, comprising a mounting ring that can move along the distribution direction of a horizontal pressure vessel, one side of the mounting ring is provided with a first probe ring and a second probe ring that can move synchronously therewith, the first probe ring and the second probe ring are connected by multiple groups of positioning units, and the multiple groups of positioning units are equidistantly distributed along a circular trajectory, when the first probe ring and the second probe ring move into the interior of the pressure vessel, the positioning units contact the inner wall of the pipe.

[0007] It also includes two groups of drive units that can be located in the inner cavity of the pressure vessel and move synchronously. The two groups of drive units are distributed from front to back in the relative space of the first probe ring and the second probe ring. Both groups of drive units are provided with multiple detection cameras equidistantly distributed along a circular trajectory. The detection cameras can detect the inner cavity of the pressure vessel as the drive units move. The detection cameras on each group of drive units can move synchronously and pass through the inner and outer sides of the loop lines of the first probe ring and the second probe ring.

[0008] Furthermore, the positioning unit includes two adjusting arms respectively arranged on the first probe ring and the second probe ring through bearing seats, and positioning rollers are provided at one end of the two adjusting arms close to the inner cavity of the pressure vessel. The adjusting arms can adjust their own angles until the positioning rollers are against the inner wall of the cavity of the pressure vessel.

[0009] Furthermore, the positioning unit also includes support plates respectively arranged on opposite sides of the first probe ring and the second probe ring, the two support plates are connected by a connecting seat, the connecting seat is provided with an electric bidirectional lead screw, the two ends of the electric bidirectional lead screw are respectively arranged on the first probe ring and the second probe ring, and sliding blocks are installed at the positive and reverse threads of the electric bidirectional lead screw.

[0010] The two sliding blocks are connected with a top contact arm through a bearing seat, and the end of the top contact arm away from the sliding block is connected to the adjustment arm through a rotating shaft. When the two sliding blocks move in opposite directions, the top contact arm moving synchronously with the sliding block can push the adjustment arm to rotate until the positioning roller moves.

[0011] Furthermore, the driving units all include a movable slide, each of which is provided with a linkage inner ring, the linkage inner ring is connected to a linkage outer ring coaxially therewith via a connecting frame, and the linkage inner ring is connected to a plurality of driving gears equidistantly distributed along a circular trajectory via a rotating shaft, each of which is provided with a swing arm, and the detection camera is arranged at one end of the swing arm away from the driving gear, and when the plurality of driving gears rotate synchronously with the swing arm, the detection camera can move through the inner and outer sides of the linkage outer ring.

[0012] Furthermore, the linkage inner ring is provided with an electric gear 2 coaxially distributed therewith, the driving gears are located on the outer ring line of the electric gear 2, and the driving gears are meshed with the electric gear 2. As the electric gear 2 rotates, multiple driving gears can rotate synchronously with the swing arm.

[0013] Furthermore, a first limit support is provided on the connecting seat, and a second limit support is provided on the first probe ring and the second probe ring. The first limit support and the second limit support are provided with the same guide rod, and the two slides are both mounted on the guide rod, and the two slides are connected by a linkage rack distributed parallel to the guide rod.

[0014] The second limit support is provided with an electric gear 1 meshing with the linkage rack. As the electric gear 1 rotates, the linkage rack, two slide seats, two sets of linkage inner rings and linkage outer rings move synchronously along the distribution direction of the guide rod.

[0015] Furthermore, a chain conveyor and a guide rail are provided below the mounting ring, the first probe ring and the second probe ring, and the mounting ring and the first probe ring are connected by a first support foot and a second support foot, the first support foot is provided on the chain conveyor, and the second support foot is provided on the guide rail, and as the chain conveyor runs, the first support foot and the second support foot move synchronously until the first probe ring and the second probe ring move into the inner side of the pressure vessel cavity.

[0016] In summary, the technical effects and advantages of the present invention are as follows:

[0017] 1. The present invention connects the positioning unit to the inner wall of the pressure vessel, so that the entire detection equipment can be tightly and stably connected to the cavity of the pressure vessel, effectively avoiding detection errors caused by equipment shaking and deviation during the detection process, and maintaining the stability of the entire detection equipment during the detection process.

[0018] 2. The present invention is equipped with a detection camera through the driving unit, which can quickly perform detection operations on the inner cavity of the pressure vessel, thereby improving the efficiency of the detection work. At the same time, each group of detection cameras can shrink and spread, and has a protective effect on the detection camera before the detection operation. During the detection process, the accuracy of the relative position of the detection camera and the inner wall of the pressure vessel is guaranteed, thereby improving the accuracy of the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure from the second viewing angle of the present invention.

[0022] Figure 3 This is a schematic diagram of the positions of the mounting ring, the first probe ring and the second probe ring of the present invention.

[0023] Figure 4 It is a schematic diagram of the second viewing angle position of the mounting ring, the first probe ring and the second probe ring of the present invention.

[0024] Figure 5 It is a schematic diagram of the connection structure between the top contact arm and the adjustment arm of the present invention.

[0025] Figure 6 It is a schematic diagram of the connection structure between the top contact arm and the adjustment arm of the present invention from a second viewing angle.

[0026] Figure 7 It is a schematic diagram of the connection structure of the slide, linkage rack and electric gear of the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0028] Fig. 9 This is a schematic diagram of the connection of the slide, linkage rack and electric gear from a second viewing angle of the present invention.

[0029] Fig.10 It is a schematic diagram of the connection structure of the linkage inner ring and the linkage outer ring of the present invention.

[0030] In the figure: 1. mounting ring; 2. first probe ring; 3. second probe ring; 4. adjusting arm; 5. positioning roller; 6. support plate; 7. connecting seat; 8. electric bidirectional screw; 9. sliding block; 10. top contact arm; 11. first limit support; 12. second limit support; 13. guide rod; 14. sliding seat; 15. linkage rack; 16. electric gear one; 17. linkage inner ring; 18. linkage outer ring; 19. connecting frame; 20. driving gear; 21. swing arm; 22. detection camera; 23. electric gear two; 24. first support leg; 25. second support leg; 26. chain conveyor belt; 27. guide rail. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1-4 A pressure vessel cavity detection device shown in the figure is for horizontal pressure vessels. The device includes a mounting ring 1 that can move along the distribution direction of the horizontal pressure vessel. One side of the mounting ring 1 is provided with a first probe ring 2 and a second probe ring 3 that can move synchronously therewith. The first probe ring 2 and the second probe ring 3 are connected by multiple groups of positioning units, and the multiple groups of positioning units are equidistantly distributed along a circular trajectory. When the first probe ring 2 and the second probe ring 3 move into the interior of the pressure vessel, the positioning units contact the inner wall of the pipeline, so that the entire detection device is tightly and stably connected to the cavity of the pressure vessel.

[0033] It also includes two groups of driving units that can be located in the inner cavity of the pressure vessel and move synchronously. The two groups of driving units are distributed from front to back in the relative space of the first probe ring 2 and the second probe ring 3. Both groups of driving units are provided with multiple detection cameras 22 equidistantly distributed along a circular trajectory. The detection camera 22 can detect the inner cavity of the pressure vessel as the driving unit moves, and then can quickly and comprehensively perform detection operations on the inner cavity of the pressure vessel.

[0034] Before and during the detection operation, the detection camera 22 on each set of driving units can be controlled to move through the inner and outer sides of the first probe ring 2 and the second probe ring 3 to achieve the purpose of driving the detection camera 22 to contract and spread.

[0035] Specifically, Figure 5 , Figure 6 As shown, the positioning unit includes two adjustment arms 4 respectively arranged on the first probe ring 2 and the second probe ring 3 through the bearing seat, and the two adjustment arms 4 are provided with positioning rollers 5 at one end close to the inner cavity of the pressure vessel. When the first probe ring 2 and the second probe ring 3 are moved into the inner side of the pressure vessel, in order to avoid the obstruction caused by the friction between the adjustment arms 4 and the inner wall of the pressure vessel, the adjustment arms 4 can adjust their own angles. After the first probe ring 2 and the second probe ring 3 are moved into the inner side of the pressure vessel, the adjustment arms 4 can stretch and move until the positioning rollers 5 are against the inner wall of the cavity of the pressure vessel.

[0036] like Figure 5 , Figure 6As shown, the positioning unit also includes a support plate 6 which is respectively arranged on the opposite sides of the first probe ring 2 and the second probe ring 3. The two support plates 6 are connected by a connecting seat 7. The connecting seat 7 is provided with an electric bidirectional lead screw 8. The two ends of the electric bidirectional lead screw 8 are respectively arranged on the first probe ring 2 and the second probe ring 3, and sliding blocks 9 are installed at the positive and reverse threads of the electric bidirectional lead screw 8.

[0037] The two sliding blocks 9 are connected with a top contact arm 10 through a bearing seat. The end of the top contact arm 10 away from the sliding block 9 is connected to the adjusting arm 4 through a rotating shaft. When the electric bidirectional screw 8 runs and prompts the two sliding blocks 9 to move in opposite directions, the top contact arm 10 moving synchronously with the sliding block 9 can push the adjusting arm 4 to rotate, so as to achieve the purpose of driving the adjusting arm 4 to extend until the positioning roller 5 moves.

[0038] After the positioning roller 5 abuts against the inner wall of the pressure vessel, the stability of the first probe ring 2, the second probe ring 3, the drive unit and the detection camera 22 can be maintained, so that the entire detection equipment is tightly and stably connected to the cavity of the pressure vessel, effectively avoiding detection errors caused by equipment shaking and offset during the detection process, and maintaining the stability of the entire detection equipment during the detection process.

[0039] Example 2: Figure 7 , Figure 8 As shown, on the basis of Example 1, in order to enable the detection camera 22 to move smoothly on the driving unit, the driving unit includes a movable slide 14, and the slide 14 is provided with a linkage inner ring 17, and the linkage inner ring 17 is connected to a linkage outer ring 18 coaxially distributed therewith through a connecting frame 19, and the linkage inner ring 17 is connected to multiple driving gears 20 equidistantly distributed along a circumferential track through a rotating shaft. The combination of the linkage inner ring 17 and the linkage outer ring 18 can maintain the stability of multiple driving gears 20.

[0040] The driving gears 20 are each provided with a swing arm 21 , and the detection cameras 22 are each provided at one end of the swing arm 21 away from the driving gear 20 . When the multiple driving gears 20 rotate synchronously with the swing arm 21 , the detection cameras 22 can move through the inner and outer sides of the linkage outer ring 18 .

[0041] The contraction and expansion movement of the detection camera 22 on the linkage outer ring 18 can effectively prevent the detection camera 22 from colliding with the inner wall of the pressure vessel during the movement of the driving unit and the positioning unit, and has a protective effect on the detection camera 22. At the same time, during the detection work, the distance between the detection camera 22 and the inner wall of the pressure vessel can be easily adjusted, which ensures the accuracy of the relative position of the detection camera 22 and the inner wall of the pressure vessel, and ensures the accuracy of the detection work.

[0042] Specifically, Figure 7 , Figure 8 As shown, in order to enable multiple driving gears 20 and the swing arm 21 to rotate smoothly, an electric gear 2 23 coaxially distributed therewith is provided on the linkage inner ring 17, and the driving gears 20 are all located on the outer ring line of the electric gear 23, and the driving gears 20 are all meshed with the electric gear 23. As the electric gear 23 rotates, multiple driving gears 20 and the swing arm 21 can rotate synchronously.

[0043] Therefore, during the rotation of the multiple driving gears 20 and the swing arm 21, the swing arm 21 can smoothly pass through the inner and outer sides of the first probe ring 2 and the second probe ring 3. When the first probe ring 2 and the second probe ring 3 are moved into the pressure vessel, the swing arm 21 is located on the inner side of the first probe ring 2 and the second probe ring 3. When the first probe ring 2 and the second probe ring 3 have finished moving and before the two sets of driving units are operated, after the swing arm 21 moves to the outer side of the first probe ring 2 and the second probe ring 3, the detection camera 22 is facing the inner cavity side wall of the pressure vessel.

[0044] The detection cameras 22 installed on each set of driving units are arranged equidistantly along the circumferential track, so each set of detection cameras 22 can divide the annular inner wall of the pressure vessel into a plurality of arc-shaped areas of equal area. The arc-shaped areas are the detection range of each detection camera 22.

[0045] like Fig. 9 , Fig.10 As shown, in order to enable the driving unit equipped with the detection camera 22 to move smoothly, a first limit support 11 is provided on the connecting seat 7, and a second limit support 12 is provided on the first probe ring 2 and the second probe ring 3. The first limit support 11 and the second limit support 12 are provided with the same guide rod 13, and two slides 14 are both mounted on the guide rod 13, and the two slides 14 are connected by a linkage rack 15 distributed parallel to the guide rod 13.

[0046] The second limit bracket 12 is provided with an electric gear 16 meshing with the linkage rack 15. When the first probe ring 2 and the second probe ring 3 move into the inner side of the pressure vessel, as the electric gear 16 rotates, the linkage rack 15, the two slides 14, the two groups of linkage inner rings 17 and the linkage outer ring 18 move synchronously along the distribution direction of the guide rod 13, so as to achieve the purpose of driving the two groups of detection cameras 22 to move synchronously. During the movement, the two groups of detection cameras 22 can quickly perform detection operations on the inner cavity of the pressure vessel, thereby improving the efficiency of the detection work.

[0047] It is worth mentioning that, in this embodiment, the lens of each detection camera 22 is a wide-angle lens, and the lens can cover the arc area formed by the annular inner wall divided by each group of detection cameras 22. Therefore, during the movement of the two groups of detection cameras 22, a comprehensive and accurate detection operation can be performed on the annular inner wall of the pressure vessel.

[0048] like Figure 1 , Figure 2 As shown, in order to enable the installation ring 1 to move smoothly, the first probe ring 2 and the second probe ring 3 to move smoothly into the inner side of the pressure vessel, a chain conveyor 26 and a guide rail 27 are provided below the installation ring 1, the first probe ring 2 and the second probe ring 3, and the installation ring 1 and the first probe ring 2 are connected by the first support leg 24 and the second support leg 25. The combination of the first support leg 24 and the second support leg 25 can maintain the stability of the first probe ring 2, the second probe ring 3 and the installation ring 1.

[0049] The first leg 24 is arranged on the chain conveyor 26, and the second leg 25 is arranged on the guide rail 27. When the chain conveyor 26 is running, the first leg 24 can be moved under its transmission force, and the second leg 25 is also located inside the guide rail 27 and moves synchronously until the first probe ring 2 and the second probe ring 3 move into the inner side of the pressure vessel cavity. When the inspection work is completed, the first probe ring 2 and the second probe ring 3 can also be moved out to the outside of the pressure vessel to facilitate the transfer of the pressure vessel.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure vessel cavity detection device, characterized in that: The invention comprises a mounting ring (1) which can move along the distribution direction of a horizontal pressure vessel, wherein a first probe ring (2) and a second probe ring (3) which can move synchronously with the mounting ring (1) are provided on one side of the mounting ring (1), wherein the first probe ring (2) and the second probe ring (3) are connected via a plurality of groups of positioning units, wherein the plurality of groups of positioning units are distributed equidistantly along a circular track, and when the first probe ring (2) and the second probe ring (3) are moved into the interior of the pressure vessel, the positioning units contact the inner wall of the pipeline; It also includes two groups of drive units that can be located in the inner cavity of the pressure vessel and move synchronously. The two groups of drive units are distributed from front to back in the relative space between the first probe ring (2) and the second probe ring (3). The two groups of drive units are each provided with a plurality of detection cameras (22) that are equidistantly distributed along a circular trajectory. The detection cameras (22) can detect the inner cavity of the pressure vessel as the drive units move. The detection cameras (22) on each group of drive units can move synchronously and pass through the inner and outer sides of the loop lines of the first probe ring (2) and the second probe ring (3); The driving units all include a movable slide (14), the slide (14) is provided with a linkage inner ring (17), the linkage inner ring (17) is connected to a linkage outer ring (18) coaxially distributed therewith via a connecting frame (19), and the linkage inner ring (17) is connected to a plurality of driving gears (20) equidistantly distributed along a circular track via a rotating shaft, the driving gears (20) are all provided with a swing arm (21), and the detection camera (22) is all arranged at one end of the swing arm (21) away from the driving gear (20), and when the plurality of driving gears (20) and the swing arm (21) rotate synchronously, the detection camera (22) can move through the inside and outside of the linkage outer ring (18); The linkage inner ring (17) is provided with a coaxially distributed electric gear 2 (23), the driving gears (20) are located on the outer ring line of the electric gear 2 (23), and the driving gears (20) are meshed with the electric gear 2 (23), and as the electric gear 2 (23) rotates, the plurality of driving gears (20) and the swing arm (21) can rotate synchronously.

2. The pressure vessel cavity detection device according to claim 1, characterized in that: The positioning unit comprises two adjustment arms (4) which are respectively arranged on the first probe ring (2) and the second probe ring (3) through bearing seats. The two adjustment arms (4) are provided with positioning rollers (5) at one end close to the inner cavity of the pressure vessel. The adjustment arms (4) can adjust their own angles until the positioning rollers (5) abut against the inner wall of the cavity of the pressure vessel.

3. The pressure vessel cavity detection device according to claim 2, characterized in that: The positioning unit further comprises supporting plates (6) respectively arranged on opposite sides of the first probe ring (2) and the second probe ring (3), the two supporting plates (6) being connected via a connecting seat (7), an electric bidirectional lead screw (8) being arranged on the connecting seat (7), two ends of the electric bidirectional lead screw (8) being respectively arranged on the first probe ring (2) and the second probe ring (3), and sliding blocks (9) being installed at the forward and reverse threads of the electric bidirectional lead screw (8); The two sliding blocks (9) are connected to a top contact arm (10) via a bearing seat, and one end of the top contact arm (10) away from the sliding block (9) is connected to the adjustment arm (4) via a rotating shaft. When the two sliding blocks (9) move in opposite directions, the top contact arm (10) moving synchronously with the sliding block (9) can push the adjustment arm (4) to rotate until the positioning roller (5) moves.

4. The pressure vessel cavity detection device according to claim 3, characterized in that: The connecting seat (7) is provided with a first limit bracket (11), the first probe ring (2) and the second probe ring (3) are both provided with a second limit bracket (12), the first limit bracket (11) and the second limit bracket (12) are provided with a same guide rod (13), the two slide seats (14) are both sleeved on the guide rod (13), and the two slide seats (14) are connected via a linkage rack (15) distributed parallel to the guide rod (13); The second limit support (12) is provided with an electric gear (16) meshing with the linkage rack (15); as the electric gear (16) rotates, the linkage rack (15), the two slide seats (14), the two sets of linkage inner rings (17) and the linkage outer ring (18) move synchronously along the distribution direction of the guide rod (13).

5. The pressure vessel cavity detection device according to claim 1, characterized in that: A chain conveyor (26) and a guide rail (27) are provided below the mounting ring (1), the first probe ring (2) and the second probe ring (3), and the mounting ring (1) and the first probe ring (2) are connected via a first support leg (24) and a second support leg (25), wherein the first support leg (24) is provided on the chain conveyor (26) and the second support leg (25) is provided on the guide rail (27), and as the chain conveyor (26) operates, the first support leg (24) and the second support leg (25) move synchronously until the first probe ring (2) and the second probe ring (3) move into the inner side of the pressure vessel cavity.

Images