A wrap-around clamping type pipe CT scanning imaging device

Abstract

The application provides a kind of encircles and holds type pipeline CT scanning imaging device, comprising: inner frame, it is the ring structure that can open and close;Mounting detection mechanism is installed on the inner frame, the mounting detection mechanism can scan pipeline, obtain the CT image of pipeline;Outer frame, it is the ring structure that can open and close, the inner frame is coaxially arranged with the outer frame, and can be rotatably connected;Opening and closing drive mechanism can drive the ring structure of the inner frame and outer frame synchronous opening or closing;Rotary drive structure can drive the inner frame rotates around its central axis, the encircles and holds type pipeline CT scanning imaging device of the application has the advantages that simple structure, high degree of integration, good portability, and easy to operate, wide application range.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline flow safety guarantee, in particular to the field of pipeline CT nondestructive testing technology, and specifically to a ring clamping type pipeline CT scanning imaging device. BACKGROUND

[0002] Pipeline transportation has become one of the main oil and gas transportation methods in the world today due to its large transportation capacity and economic reliability. However, a series of pipeline health problems such as blockage and corrosion have brought great safety hazards to the operation of oil and gas pipelines, and high-precision detection of the health status of pipelines is a major problem that global related enterprises urgently need to solve. At present, CT (Computed Tomography) imaging, as an excellent nondestructive testing technology, does not require disassembly of the pipeline, and the detection method is fast and convenient, and can realize high-precision detection of the inner and outer pipelines of oil and gas transportation. In recent years, it has been more and more widely used.

[0003] However, the existing CT nondestructive testing equipment has the defects of complex structure, large size and heavy weight, and is relatively bulky, which has many limitations when used for nondestructive testing of oil and gas pipelines. In view of the above defects, the technical personnel in the field have proposed a variety of CT detection equipment for pipelines through research. These devices simplify the structure of the CT nondestructive testing equipment to a certain extent, making it more portable and flexible, and reducing the difficulty and complexity of the pipeline CT scanning detection process. However, with the large-scale and engineering development of pipeline transportation, pipeline detection needs to be carried out more and more frequently and more and more widely, which requires the rapidity and convenience of the pipeline CT scanning imaging device to be improved. In addition, the adaptability of the existing pipeline CT scanning imaging device to the pipe diameter also needs to be improved. SUMMARY

[0004] The present application designs a ring clamping type pipeline CT scanning imaging device to overcome the technical problems of existing CT scanning imaging devices, such as equipment being bulky, poor use convenience, and low adaptability to pipe diameter.

[0005] To solve the above problems, the present application discloses a ring clamping type pipeline CT scanning imaging device, which comprises:

[0006] An inner frame, which is an annular structure capable of being opened and closed;

[0007] An installation and detection mechanism, which is installed on the inner frame and can scan the pipeline to obtain a CT image of the pipeline;

[0008] An outer frame, which is an annular structure capable of being opened and closed, and the inner frame and the outer frame are coaxially arranged and rotatably connected;

[0009] An opening and closing driving mechanism, which can drive the annular structure of the inner frame and the outer frame to open or close synchronously;

[0010] A rotating driving mechanism, which can drive the inner frame to rotate around its central axis.

[0011] Further, the annular clamping type pipeline CT scanning imaging device further comprises a clamping fixing mechanism, which is installed on the outer frame and can clamp the pipeline to fix the outer frame on the pipeline.

[0012] Further, the clamping fixing mechanism comprises:

[0013] A plurality of fixing claws, which are arranged on the outer frame;

[0014] A driving device, which can drive the fixing claws to stretch and retract along the radial direction of the outer frame.

[0015] Further, the inner frame comprises:

[0016] At least two inner half-rings, which are in the form of half-circular annular structures, and are oppositely arranged to form an annular structure;

[0017] An inner frame hinge, which connects the two inner half-rings in a hinged manner to form an annular structure that can be opened and closed.

[0018] Further, the detection mechanism comprises:

[0019] A radiation source, which can emit penetrating radiation;

[0020] A detector, which can receive the radiation emitted by the radiation source;

[0021] A controller, which can control the radiation source and the detector to work, collect data, and generate a CT scanning image of the pipeline;

[0022] The radiation source and the detector are oppositely arranged at 180° on the inner frame.

[0023] Further, the outer frame is arranged on both sides of the inner frame.

[0024] Further, the outer frame comprises:

[0025] An outer half-ring, which is in the form of a half-circular annular structure, and at least two outer half-rings are arranged on each side of the inner frame, and the two outer half-rings on each side are oppositely arranged to form an annular structure;

[0026] An outer frame hinge, which connects the two outer half-rings in a hinged manner to form an annular structure that can be opened and closed.

[0027] Further, the opening and closing driving mechanism comprises:

[0028] An opening and closing driving rod capable of being telescoped under the driving of the power system, two ends of the opening and closing driving rod being connected with two outer half-rings hinged together respectively;

[0029] A connecting frame connecting the outer frames located on both sides of the inner frame.

[0030] Further, the rotating driving structure comprises:

[0031] An annular guide rail located on one of the inner frame and the outer frame;

[0032] A plurality of pulleys rotatably arranged on the other one of the inner frame and the outer frame, the guide rail being inserted between the plurality of pulleys, so that the inner frame and the outer frame are rotatably connected.

[0033] Further, the rotating driving structure comprises:

[0034] A driving motor,

[0035] A gear connected with an output shaft of the driving motor;

[0036] A gear ring arranged around a periphery of the inner frame or the outer frame and fixedly connected with one of the inner frame or the outer frame, the gear ring being meshingly connected with the gear;

[0037] The driving motor and the gear being fixedly connected with the other one of the inner frame or the outer frame, under the driving of the driving motor, the inner frame being capable of rotating around a central axis thereof.

[0038] The pipeline CT scanning imaging device has the advantages of simple structure, high integration degree, good portability, convenient operation and wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A working principle diagram of the pipeline CT scanning imaging device;

[0040] Figure 2 A perspective structural schematic diagram of the pipeline CT scanning imaging device;

[0041] Figure 3 A perspective structural schematic diagram of the inner frame and the detection mechanism in the pipeline CT scanning imaging device;

[0042] Figure 4It is the three-dimensional structure schematic view of the outer frame, opening and closing driving mechanism, rotating driving structure and clamping fixing mechanism in the pipeline CT scanning imaging device of the application;

[0043] Figure 5 It is the structure schematic view of the clamping fixing mechanism in the pipeline CT scanning imaging device of the application;

[0044] Figure 6 It is the three-dimensional structure schematic view of the pipeline CT scanning imaging device of the application in the opening state;

[0045] Figure 7 It is the three-dimensional structure schematic view of the pipeline CT scanning imaging device of the application in the closing state;

[0046] Figure 8 It is the three-dimensional structure schematic view of the pipeline CT scanning imaging device of the application in the pipe clamping and scanning state.

[0047] Explanation of reference signs:

[0048] 1, inner frame; 101, inner half ring; 102, inner frame connecting rod; 103, inner frame hinge; 2, detection mechanism; 201, ray source; 202, detector; 203, controller; 3, outer frame; 301, outer half ring; 302, outer frame connecting rod; 303, outer frame hinge; 4, opening and closing driving mechanism; 401, opening and closing driving rod; 402, connecting frame; 5, rotating driving structure; 501, driving motor; 502, gear; 503, gear ring; 504, guide rail; 505, bearing slide; 506, pulley; 6, clamping fixing mechanism; 601, fixed claw; 602, driving device. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the drawings.

[0050] As Figures 1-8 shown, a ring clamping type pipeline CT scanning imaging device comprises:

[0051] An inner frame 1 is an annular structure capable of being opened and closed;

[0052] A detection mechanism 2 is installed on the inner frame 1, and the detection mechanism 2 can scan the pipeline and obtain the CT image of the pipeline;

[0053] An outer frame 3 is an annular structure capable of being opened and closed, and the inner frame 1 and the outer frame are coaxially arranged and rotatably connected, so that the inner frame 1 can rotate around the central axis;

[0054] An opening and closing driving mechanism 4, which can drive the annular structure of the inner frame 1 and the outer frame 3 to open or close synchronously;

[0055] A rotating driving mechanism 5, which can drive the inner frame 1 to rotate around its central axis.

[0056] Further, the ring-encircling clamping type pipeline CT scanning imaging device further comprises a clamping and fixing mechanism 6, which is installed on the outer frame 3 and can clamp a pipeline to be measured, so as to fix the ring-encircling clamping type pipeline CT scanning imaging device, especially the outer frame 3, on the pipeline to be measured. In this way, the ring-encircling clamping type pipeline CT scanning imaging device can be fixed on pipelines with different diameters by the clamping and fixing mechanism 6.

[0057] Further, the inner frame 1 comprises:

[0058] At least two inner half-rings 101, which are in a half-circular annular structure, and are oppositely arranged to form an annular structure;

[0059] An inner frame hinging member 103, which hingingly connects the two inner half-rings 101, so that the two inner half-rings 101 form an annular structure that can be opened and closed.

[0060] The inner frame hinging member 103 connects the two inner half-rings 101 to form the annular structure of the inner frame 1 that can be opened and closed, so that the inner frame 1 can be conveniently opened and closed, and is easy to use and operate.

[0061] As some embodiments of the present application, one end of the two inner half-rings 101 is hingingly connected together by the inner frame hinging member 103, and the other end is a free end or is detachably inserted and connected together.

[0062] Further, the inner frame 1 further comprises:

[0063] An inner frame connecting rod 102, each of the inner half-rings 101 comprises two half-circular annular pieces arranged in parallel, and the inner frame connecting rod 102 is arranged between the two half-circular annular pieces and connects the two half-circular annular pieces together.

[0064] The way of connecting the two half-circular annular pieces arranged in parallel into a rigid whole by the inner frame connecting rod 102 can reduce the material usage of each of the inner half-rings 101, reduce the cost and the weight of the inner frame 1, and ultimately reduce the power required for the rotation of the inner frame 1, while ensuring the strength and stability of the inner frame 1.

[0065] As some embodiments of the present application, a plurality of inner frame connecting rods 102 are arranged between the two half circular ring plates.

[0066] Further, the detection mechanism 2 comprises:

[0067] a ray source 201 capable of emitting various penetrating rays for CT imaging;

[0068] a detector 202 capable of receiving the rays emitted by the ray source 201;

[0069] a controller 203 capable of controlling the ray source 201 and the detector 202 to work, collect data, and generate CT scan images of the pipeline.

[0070] As some embodiments of the present application, the ray source 201 can be an X-ray, a gamma ray, etc.

[0071] In addition, the controller 203 is also provided with auxiliary components such as power supplies.

[0072] The detection mechanism 2 is the core detection component of the ring clamping type pipeline CT scan imaging device, which is mainly used for detecting pipelines and generating images. The working principle and process of the detection mechanism 2 are already existing technologies in the art, and will not be described here. The detection mechanism 2 can distinguish pipeline corrosion and damage, and can accurately judge the type of pipeline blockage and the flow pattern and state.

[0073] Preferably, the ray source 201 and the detector 202 are arranged in a 180° opposite manner on the inner frame 1.

[0074] As some embodiments of the present application, the controller 203 can also be used to control the working state of the opening and closing driving mechanism 4, the rotating driving structure 5, and the clamping and fixing mechanism 6, etc.

[0075] As some embodiments of the present application, the controller 203 can be an integrated controller, or can be composed of a plurality of split controllers respectively controlling different components.

[0076] In addition, the controller 203 also includes a data acquisition system and other components or modules necessary for CT scan imaging.

[0077] As some embodiments of the present application, the outer frame 3 can only include a ring structure arranged on one side of the inner frame 1, or can include ring structures arranged on both sides of the inner frame 1.

[0078] Preferably, the outer frame 3 includes ring structures arranged on both sides of the inner frame 1, i.e. the outer frame 3 is arranged on both sides of the inner frame 1.

[0079] Further, the outer frame 3 comprises:

[0080] An outer half ring 301, which is in a semi-circular ring structure, at least two outer half rings 301 are arranged on both sides of the inner frame 1 respectively, and the two outer half rings 301 on each side are oppositely arranged to form a ring structure;

[0081] An outer frame hinge 303, the two outer half rings 301 are connected by the outer frame hinge 303 to form an openable and closable ring structure.

[0082] The outer frame hinge 303 connects the two outer half rings 301 to form an openable and closable ring structure in the outer frame 3, so that the outer frame 3 can be conveniently opened and closed, and is easy to use and operate.

[0083] As some embodiments of the present application, one end of the two outer half rings 301 is connected by the outer frame hinge 303, and the other end is a free end or detachably connected together.

[0084] Further, the outer frame 3 further comprises:

[0085] An outer frame connecting rod 302, each of the outer half rings 301 comprises two parallel arranged semi-circular ring plates, and the outer frame connecting rod 302 is arranged between the two semi-circular ring plates and connects the two semi-circular ring plates together.

[0086] The way of connecting two parallel arranged semi-circular ring plates into a rigid whole by the outer frame connecting rod 302 can reduce the material usage of each outer half ring 301, reduce the cost and the weight of the outer frame 3, ultimately reduce the power required for the rotation of the outer frame 3, and also ensure the strength and stability of the outer frame 3.

[0087] As some embodiments of the present application, a plurality of outer frame connecting rods 302 are arranged between the two semi-circular ring plates.

[0088] Preferably, the inner frame 1 and the outer frame 3 can be made of light materials such as aluminum alloy and carbon fiber, which can greatly reduce the overall weight of the device, facilitate disassembly and movement, and easily load the device on a vehicle, a ship or other platform.

[0089] Further, the opening and closing driving mechanism 4 comprises:

[0090] An opening and closing driving rod 401, which can be telescopic under the driving of the power system, and the two ends of the opening and closing driving rod 401 are connected to the two outer half rings 301 which are hinged together;

[0091] connecting frames 402, which connect the outer frames 3 on both sides of the inner frame 1;

[0092] The outer frames 3 on both sides of the inner frame 1 are connected into a rigid whole by the connecting frames 402, when the opening and closing driving rod 401 is shortened under the driving of the power system, the opening and closing driving rod 401 will drive the two outer half-rings 301 hinged together to rotate outward and open; when the opening and closing driving rod 401 is elongated under the driving of the power system, the opening and closing driving rod 401 will drive the two outer half-rings 301 hinged together to rotate inward and close, thus, the outer frame 3 is driven to open or close automatically, the above process corresponds to the opening and closing driving rod 401 being arranged on the outside of the outer frame 3, when the opening and closing driving rod 401 is arranged on the inside of the outer frame 3, the process is opposite to the above process: that is, when the opening and closing driving rod 401 is shortened, the outer half-rings 301 rotate inward and close; when the opening and closing driving rod 401 is elongated, the outer half-rings 301 rotate outward and open.

[0093] Preferably, the opening and closing driving rod 401 is arranged on the outside of the outer frame 3, thus, the opening and closing driving rod 401 does not affect the pipe clamping of the outer frame 3 and the inner frame 1.

[0094] Preferably, a plurality of connecting frames 402 are arranged on the outside of the outer frame 3 at intervals, and the two ends of each connecting frame 402 are connected to the outer frames 3 on both sides of the inner frame 1, respectively.

[0095] As some embodiments of the present application, the opening and closing driving rod 401 can be a hydraulic telescopic rod and the like, and a hydraulic power system is arranged thereon, and the extension and contraction of the opening and closing driving rod 401 is controlled by the hydraulic power system.

[0096] As some embodiments of the present application, the opening and closing driving mechanism 4 can also drive the inner frame 1 and the outer frame 3 to open and close by means of pneumatic drive, servo drive and the like.

[0097] As some embodiments of the present application, the opening and closing driving rod 401 can be arranged only on the outer frame 3 on one side of the inner frame 1, and the power is transmitted to the outer frame 3 on the other side of the inner frame 1 through the connecting frame 402; in addition, the opening and closing driving rod 401 can also be arranged on the outer frames 3 on both sides of the inner frame 1, respectively, and the opening and closing of the outer frame 3 is controlled by two opening and closing driving rods 401 moving synchronously.

[0098] Further, the rotating driving structure 5 comprises:

[0099] An annular guide rail 504 is arranged around the periphery of the inner frame 1 or the outer frame 3, and the guide rail 504 is arranged on one of the inner frame 1 and the outer frame 3;

[0100] a plurality of pulleys 506 rotatably arranged on the other of the inner frame 1 and the outer frame 3, the guide rail 504 being inserted between the plurality of pulleys 506 to define the position of the inner frame 1 while realizing the rotatable connection between the inner frame 1 and the guide rail 504;

[0101] a bearing slide 505 arranged on the inner frame 1 or the outer frame 3 together with the pulley 506 to mount the pulley 506, the pulley 506 being rotatably mounted on the bearing slide 505.

[0102] As some embodiments of the present application, as shown in the drawings, the annular guide rail 504 comprises two semi-annular rings arranged on the inner frame 1, the two semi-annular rings being oppositely arranged to form an annular ring. Figure 5

[0103] Further, in the initial state before detection, the two semi-annular rings in the annular guide rail 504, the two inner semi-rings 101 in the inner frame 1 and the two outer semi-rings 301 in the outer frame 3 are arranged in alignment, so that the opening and closing positions in the annular guide rail 504, the inner frame 1 and the outer frame 3 are in the same plane.

[0104] After assembly, the inner frame 1 and the outer frame 3 are rotatably connected through the guide rail 504 and the pulley 506, and further rotatably connected through the cooperation of the guide rail 504, the pulley 506 and the bearing slide 505, so that the inner frame 1 can be rotated under the action of the rotating drive structure 5 on one hand, and the inner semi-rings 101 on the inner frame 1 can be opened or closed under the action of the outer frame 3 on the other hand.

[0105] Preferably, the guide rail 504 is arranged around the periphery of the inner frame 1, and the guide rail 504 is located on the inner frame 1, and correspondingly, the pulley 506 and the bearing slide 505 are located on the outer frame 3.

[0106] Further, the guide rail 504 can be opened and closed with the inner frame 1 or the outer frame 3.

[0107] Further, the rotating drive structure 5 comprises:

[0108] a driving motor 501,

[0109] a gear 502 connected with the output shaft of the driving motor 501;

[0110] ​A gear ring 503 is arranged around the periphery of the inner frame 1 or the outer frame 3 and fixedly connected with one of the inner frame 1 or the outer frame 3, and the gear ring 503 is in meshing connection with the gear 502;

[0111] The driving motor 501 and the gear 502 are fixedly connected with the other one of the inner frame 1 or the outer frame 3;

[0112] During detection, the driving motor 501 drives the gear 502 to rotate, the gear 502 drives the gear ring 503 to rotate relatively, and the rotation of the inner frame 1 is realized, and the detection mechanism 2 rotates synchronously with the inner frame 1, and the scanning of different positions around the pipeline is realized.

[0113] As some embodiments of the present application, the driving motor 501 is a servo motor.

[0114] As some embodiments of the present application, when the gear ring 503 is fixedly connected with the inner frame 1, the driving motor 501 and the gear 502 are fixedly connected with the outer frame 3, at this time, the driving motor 501 drives the gear 502 to rotate, the gear 502 drives the gear ring 503 to rotate, and finally the inner frame 1 rotates with the gear ring 503, and the rotation of the inner frame 1 is realized; conversely, when the gear ring 503 is fixedly connected with the outer frame 3, the driving motor 501 and the gear 502 are fixedly connected with the inner frame 1, at this time, the driving motor 501 drives the gear 502 to rotate, the gear 502 drives the gear ring 503 to rotate, and since the gear ring 503 and the outer frame 3 are fixed on the pipeline, the driving motor 501, the gear 502 and the inner frame 1 will rotate under the action of the gear ring 503.

[0115] Preferably, the driving motor 501 and the gear 502 are arranged on a component that cannot rotate in the pipeline CT scanning imaging device, such as the outer frame 3, and the position of the driving motor 501 and the gear 502 is fixed and does not rotate with the inner frame 1 during scanning and detection.

[0116] Conversely, the gear ring 503 is arranged on a rotating component in the pipeline CT scanning imaging device, such as the inner frame 1, and the gear ring 503 rotates synchronously with the inner frame 1 under the driving of the driving motor 501 and the gear 502 during scanning and detection.

[0117] Preferably, the gear ring 503 is arranged integrally with the inner frame 1.

[0118] As some embodiments of the present application, the rotation driving structure 5 can also drive the inner frame 1 to rotate through a worm gear, a belt pulley, a chain transmission and the like.

[0119] As some embodiments of the present application, the rotating driving structure 5 can be arranged on one side of the inner frame 1, or on both sides of the inner frame 1 respectively.

[0120] Preferably, one side of the inner frame 1 is rotatably connected with the outer frame 3 on the side through the driving motor 501, the gear 502, the ring gear 503, the guide rail 504, the pulley 506 and the bearing slide 505; the other side is not provided with the driving motor 501, the gear 502 and the ring gear 503, and is only provided with the annular guide rail 504, the pulley 506 and the bearing slide 505 on the outer frame 3, the inner frame 1 is inserted into the annular guide rail 504 to realize the rotatable connection between the inner frame 1 and the outer frame 3 on the side.

[0121] Further, the clamping and fixing mechanism 6 comprises:

[0122] a plurality of fixed claws 601 arranged on the outer frame 3;

[0123] a driving device 602 capable of driving the fixed claws 601 to expand and contract along the radial direction of the outer frame 3.

[0124] The fixed claws 601 are used to clamp and fix the pipeline in the outer frame 3, and adjust the pipeline and the outer frame 3 to the coaxial position, thereby providing a basis for subsequent CT detection.

[0125] As some embodiments of the present application, the driving device 602 can drive the fixed claws 601 to move through hydraulic, pneumatic, servo driving and other modes.

[0126] Through the fixed claws 601 capable of expanding and contracting along the radial direction of the outer frame 3 in the clamping and fixing mechanism 6, the cooperation between the clamping and fixing mechanism 6 and pipelines with different specifications can be realized, so that the pipeline CT scanning imaging device can be applied to pipelines with different specifications.

[0127] Preferably, during the operation of the clamping and fixing mechanism 6, the driving precision of each fixed claw 601 should be controlled to realize the coaxial centering of the pipeline and the pipeline CT scanning imaging device through a cooperative control mechanism.

[0128] As some embodiments of the present application, as shown in Figure 5As shown, the fixed claw 601 is a crank structure, such as a V-shaped crank structure, the inflection point in the middle of the V-shaped crank structure is rotatably fixed on the outer half ring 301, the fixed claw 601 can rotate around the inflection point in the middle of the V-shaped crank structure, the clamping part of the fixed claw 601 for clamping the pipeline is located at one end of the fixed claw 601, the other end of the fixed claw 601 is connected with the driving device 602 through a telescopic rod, and the driving device 602 can drive the telescopic rod to rotate and stretch or retract; when the telescopic rod stretches or retracts, the crank structure in the fixed claw 601 can rotate clockwise or counterclockwise around the inflection point in the middle of the crank structure, so as to realize the stretching and shortening of the fixed claw 601 in the radial direction of the outer frame 3.

[0129] Preferably, the fixed claw 601 and the driving device 602 are arranged one by one, the driving device 602 can drive the corresponding fixed claw 601 to rotate clockwise or counterclockwise, so as to realize the stretching and shortening of the fixed claw 601 in the radial direction of the outer frame 3.

[0130] As shown in Figure 5 , the driving device 602 located at the upper right side drives the fixed claw 601 to rotate so that the fixed claw 601 is in the retracted state; the driving device 602 located at the lower right side drives the fixed claw 601 to rotate so that the fixed claw 601 is in the stretched state.

[0131] In summary, in the ring clamping type pipeline CT scanning imaging device described in the present application, the detection mechanism 2 is carried on the inner frame 1, which is the core system for completing pipeline CT scanning imaging; the outer frame 3 and the opening and closing driving mechanism 4 are responsible for controlling the opening and closing movement of the whole device, and are responsible for maintaining the integrity and rigidity of the device; in addition, the inner frame 1 and the outer frame 3 are connected through the rotating driving structure 5, the inner frame 1 rotates independently relative to the outer frame 3 through the gear ring 503, the guide rail 504 and the pulley 506 in the rotating driving structure 5, and drives the detection mechanism 2 to rotate to realize 360° imaging of the pipeline; in addition, the clamping and fixing mechanism 6 is carried on the ring clamping type outer frame 3, and is responsible for the fixation of the pipeline during CT scanning and the control of the centering degree of the pipeline; the controller 203 and the data acquisition system are responsible for CT scanning imaging, device motion control and data acquisition.

[0132] In addition, the detection method of the ring clamping type pipeline CT scanning imaging device described in the present application is as follows:

[0133] Firstly, the inner frame 1 and the outer frame 3 are opened: the opening and closing driving rod 401 in the opening and closing driving mechanism 4 moves to drive the inner half ring 101 and the outer half ring 301 hinged together to open, so that the annular structures in the inner frame 1 and the outer frame 3 are finally in the opened state;

[0134] The second step is to install the pipe: the pipe to be tested is placed in the inner frame 1 and the outer frame 3 in an open state, and the opening and closing driving rod 401 is controlled to move reversely to drive the inner half ring 101 and the outer half ring 301 hinged together to close, and finally the annular structure in the inner frame 1 and the outer frame 3 is in a closed state.

[0135] The third step is to clamp the pipe: the clamping and fixing mechanism 6 is started, the fixing claw 601 is driven by the driving device 602 to stretch along the radial direction of the outer frame 3 until the pipe to be tested is clamped, the CT scanning imaging device is fixed on the pipe to be tested, and the pipe and the CT scanning imaging device are coaxially centered through cooperative control.

[0136] The fourth step is CT scanning imaging detection: the rotating driving structure 5 is started, the gear 502 is driven to rotate by the driving motor 501, then the inner frame 1 is driven to rotate along the guide rail 504 by the meshing connection of the gear 502 and the gear ring 503, at this time, the detection mechanism 2 loaded on the inner frame 1 rotates synchronously with the inner frame 1, and in the rotating process, the ray source 201, the detector 202 and the controller 203 cooperate to perform CT scanning imaging detection on the pipe.

[0137] The fifth step is to take out the pipe: after the CT scanning imaging detection of the pipe is completed, the clamping and fixing mechanism 6 drives the fixing claw 601 to shrink along the radial direction of the outer frame 3 through the driving device 602 to loosen the pipe to be tested; the opening and closing driving rod 401 in the opening and closing driving mechanism 4 moves to drive the inner half ring 101 and the outer half ring 301 hinged together to open, and finally the annular structure in the inner frame 1 and the outer frame 3 is in an open state, and the pipe is taken out from the inner frame 1 and the outer frame 3, that is, the CT scanning imaging device for clamping and fixing the pipe is removed.

[0138] Further, in the fourth step, the detection mechanism 2 performs CT imaging once every fixed angle of rotation until the 360-degree CT image of the pipe is acquired.

[0139] Further, in the fifth step, after the CT scanning imaging detection of the pipe is completed, the driving motor 501 drives the gear 502 to rotate first, so that the gear ring 503 drives the inner frame 1 to rotate to the initial position, so that the center axes of the inner frame hinge 103, the outer frame hinge 303 and the CT scanning imaging device are in the same plane, and in the subsequent operation, the opening and closing driving rod 401 in the opening and closing driving mechanism 4 moves to drive the inner half ring 101 and the outer half ring 301 hinged together to open respectively, and finally the annular structure in the inner frame 1 and the outer frame 3 is in an open state.

[0140] Further, in the above-mentioned fifth step, after the ring clamping type pipeline CT scanning imaging device is removed, it can be placed in a shielding cabinet for proper storage; thus, the use of the ring clamping type pipeline CT scanning imaging device described in the present application completes the entire pipeline CT scanning operation.

[0141] In summary, it is not difficult to conclude that the ring clamping type pipeline CT scanning imaging device described in the present application has the following advantages:

[0142] First, the inner frame 1 and the outer frame 3 form a hoop type frame structure of the CT scanning imaging device, which is simple in structure and easy to implement.

[0143] Second, the fixed outer frame 3 realized by the clamping and fixing mechanism 6 can stably clamp and fix the pipeline CT scanning imaging device on the pipeline to be detected, providing a good environment for CT scanning detection; at the same time, the pipeline CT scanning imaging device realizes the basic independence of the detection environment and can adapt to pipelines of various diameters, and the device can be fixed and installed only by relying on the pipeline to be detected during detection, which can be used for CT scanning imaging detection of high-pressure cores, large mechanical parts, etc.

[0144] Third, the rotating inner frame 1 realized by the rotating drive structure 5 can drive the detection mechanism 2 to detect the pipeline to be detected at 360°, which is flexible, convenient and fast to operate.

[0145] Fourth, the automatic and integrated opening and closing of the inner frame 1 and the outer frame 3 realized by the opening and closing drive mechanism 4 can quickly place the pipeline in the pipeline CT scanning imaging device or take the pipeline out of the pipeline CT scanning imaging device.

[0146] Fifth, the openable and closable ring structure formed by hinging in the inner frame 1 and the outer frame 3, in cooperation with the clamping and fixing mechanism 6, can be applied to pipelines of different diameters, so that the ring clamping type pipeline CT scanning imaging device described in the present application can detect pipelines of various diameters.

[0147] Sixth, the detection mechanism 2, the opening and closing drive mechanism 4, the rotating drive structure 5 and the clamping and fixing mechanism 6 in the ring clamping type pipeline CT scanning imaging device described in the present application are directly installed on the inner frame 1 and the outer frame 3, the overall structure of the device is simple and compact, the degree of integration is high, the volume is small and the weight is light, and the device is convenient to carry and use.

[0148] Seventh, the ring clamping type pipeline CT scanning imaging device described in the present application is combined in a modular structure, each module can be disassembled, maintained and upgraded, greatly increasing the expandability and flexibility of the device.

[0149] In summary, the ring clamping type pipeline CT scanning imaging device has the advantages of simple structure, small size, high integration, flexible and convenient use, good portability, and wide application range.

[0150] Although the present application has been disclosed with reference to the above examples, the present application is not limited to the above examples. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and therefore the scope of protection of the present application should be limited by the scope defined by the claims.

Claims

1. A wrap-around clamped pipe CT scan imaging device, characterized by, The utility model relates to a kind of pipe detection device, including: Inner frame (1), which is an openable and closable ring structure; Installation detection mechanism (2) is installed on the inner frame (1), and the installation detection mechanism (2) can scan the pipeline to obtain the CT image of the pipeline; Outer frame (3), which is an openable and closable ring structure, the inner frame (1) is coaxially arranged with the outer frame (3) and is rotatably connected; Opening and closing drive mechanism (4) can drive the ring structure of the inner frame (1) and the outer frame (3) to open or close synchronously; Rotary drive structure (5) can drive the inner frame (1) to rotate around the central axis thereof; The inner frame (1) comprises: At least two inner half-rings (101), which are semicircular ring structures, and the two inner half-rings (101) are oppositely arranged to form a ring structure; Inner frame hinge (103), the two inner half-rings (101) are hingedly connected by the inner frame hinge (103) to form an openable and closable ring structure; The outer frame (3) comprises: Outer half-ring (301), which is a semicircular ring structure, at least two outer half-rings (301) are arranged on both sides of the inner frame (1), and the two outer half-rings (301) on each side are oppositely arranged to form a ring structure; Outer frame hinge (303), the two outer half-rings (301) are hingedly connected by the outer frame hinge (303) to form an openable and closable ring structure; The opening and closing drive mechanism (4) comprises: Opening and closing drive rod (401), which can be extended and retracted under the drive of the power system, and the two ends of the opening and closing drive rod (401) are connected to the two outer half-rings (301) that are hingedly connected together; Connecting frame (402), which connects the outer frame (3) on both sides of the inner frame (1); The rotary drive structure (5) comprises: Annular guide rail (504), which is located on one of the inner frame (1) and the outer frame (3); A plurality of pulleys (506) are rotatably arranged on the other of the inner frame (1) and the outer frame (3), the guide rail (504) is inserted between the plurality of pulleys (506) to define the position of the inner frame (1), while allowing the inner frame (1) and the outer frame (3) to be rotatably connected; Bearing slide (505), which is arranged on the inner frame (1) or the outer frame (3) together with the pulley (506), is used to mount the pulley (506), and the pulley (506) is rotatably mounted on the bearing slide (505); After assembly, the inner frame (1) and the outer frame (3) are rotatably connected through the cooperation of the guide rail (504), the pulley (506) and the bearing slide (505), so that the inner frame (1) can rotate independently under the action of the rotary drive structure (5) on one side, and the inner half-rings (101) on the inner frame (1) can be opened or closed under the drive of the outer frames (3) on both sides on the other side.

2. The hoop-clip pipe CT scan imaging apparatus of claim 1, wherein, The ring clamping type pipeline CT scanning imaging device further comprises a clamping fixing mechanism (6) installed on the outer frame (3), which can clamp the pipeline to fix the outer frame (3) on the pipeline.

3. The hoop-clip pipe CT scan imaging apparatus of claim 2, wherein, The clamping fixing mechanism (6) comprises: a plurality of fixing claws (601) arranged on the outer frame (3); a driving device (602) capable of driving the fixing claws (601) to stretch out or retract along the radial direction of the outer frame (3).

4. The hoop-clip pipe CT scan imaging apparatus of claim 1, wherein, The detection mechanism (2) comprises: a ray source (201) capable of emitting rays with penetrating property; a detector (202) capable of receiving the rays emitted by the ray source (201); a controller (203) capable of controlling the ray source (201) and the detector (202) to work, collecting data and generating CT scanning images of the pipeline; The ray source (201) and the detector (202) are arranged oppositely at an angle of 180° on the inner frame (1).

5. The hoop-clip pipe CT scan imaging apparatus of claim 1, wherein, The outer frame (3) is arranged on both sides of the inner frame (1).

6. The hoop-clip pipe CT scan imaging apparatus of claim 1, wherein, The rotating driving structure (5) comprises: a driving motor (501), a gear (502) connected with the output shaft of the driving motor (501); a gear ring (503) arranged around the periphery of the inner frame (1) or the outer frame (3) and fixedly connected with one of the inner frame (1) or the outer frame (3), the gear ring (503) being meshingly connected with the gear (502); The driving motor (501) and the gear (502) are fixedly connected with the other one of the inner frame (1) or the outer frame (3), under the driving of the driving motor (501), the inner frame (1) can rotate around the central axis thereof.

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