Pipe leak detection device

Abstract

The present invention belongs to the field of pipe processing technology, and specifically relates to a pipe leak detection device, including flaw detection equipment, internal water blowing equipment, and pressure testing equipment. The pressure testing equipment includes a pressure testing frame, on which two groups of pressure test adjustment components are provided. The two groups of pressure test adjustment components are arranged opposite each other. The pressure test adjustment components include a pressure test base plate, which is movably mounted on the pressure testing frame. The pressure test base plate is provided with a pressure head mounting frame, a rotation limit mechanism, a quick plug mechanism, and a rotation drive mechanism. The pressure head mounting frame is rotatably mounted on the pressure test base plate. The pressure head mounting frame is circumferentially provided with multiple pressure head mounting plates, and multiple pressure test heads are provided on the pressure head mounting plates. The present invention can rotate the pressure head mounting frame according to the size of the pipe fitting to select a pressure test head that is suitable for the pipe fitting size, eliminating the need for manual replacement of the pressure test head, thereby improving the adaptability of the equipment and the efficiency of the pressure test.

Description

Technical Field

[0001] The invention relates to a pipe leak detection device, belonging to the technical field of pipe processing. Background Art

[0002] In the field of pipe processing, the processing of heat exchange tubes involves the tooth-rolling process. Whether the heat exchange tubes after tooth rolling are qualified needs to be determined through leak detection. In the existing technology, leak detection of pipe fittings is generally achieved through flaw detector detection devices and pressure test devices. Due to the size differences of pipe fittings of different specifications, common flaw detector detection devices and pressure test devices can only be adapted to pipe fittings of one specification. The pressure test operation of the pressure test device for pipe fittings of different specifications needs to be carried out by manually replacing the pressure test head of the corresponding specification. Moreover, since the center heights of pipe fittings of different specifications are also different, it is also necessary to adjust the installation height of the pressure test head. The operation is cumbersome and time-consuming, which is not conducive to improving production efficiency and realizing automated production. In addition, before the pressure test, it is necessary to remove the residual moisture inside the pipe fitting to prevent the residual moisture from affecting the pressure test operation. Generally, the water inside the pipe is removed through an internal water blowing device. The existing internal water blowing device is equipped with multiple workstations adapted for pipes of different specifications. However, since the blowing equipment at each workstation will work simultaneously after startup regardless of whether all workstations have pipes, the equipment requires a large capacity of compressed air, and the compressor is in a working state for a long time, consuming a lot of energy. Summary of the Invention

[0003] The present invention aims to overcome the defects of the prior art and provides a pipe leak detection device.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] 20. The apparatus of claim 19, wherein the first and second pressure measuring heads are located adjacent to the pressure measuring head, and the second and second pressure measuring heads are located adjacent to the pressure measuring head.

[0006] The beneficial effects of the present invention are as follows: the present invention installs multiple pressure test heads through the pressure head mounting bracket, and the pressure head mounting bracket is rotatably mounted on the pressure test frame, so that the pressure head mounting bracket can be rotated according to the size of the pipe fitting to select the pressure test head that is suitable for the size of the pipe fitting, so that the pressure test equipment of the present invention can adapt to the pressure test operation of pipe fittings of various sizes, and there is no need to manually replace the pressure test head, thereby improving the adaptability of the equipment and the working efficiency of the pressure test.

[0007] On the basis of the above technical solution, the present invention can also make the following improvements:

[0008] Furthermore, the rotary drive mechanism includes a rotating shaft, a rotating shaft support seat, a rotating drive disk and a rotating power cylinder. Two rotating shaft support seats are symmetrically provided, and the two rotating shaft support seats are mounted on the pressure test substrate. Both ends of the rotating shaft are rotatably mounted on the rotating shaft support seat, the pressure head mounting frame is mounted on the rotating shaft, the rotating drive disk is mounted on the end of the rotating shaft, and the rotating power cylinder is mounted on the pressure test substrate. The piston rod of the rotating power cylinder is connected to the rotating drive disk through a rotating pin mechanism.

[0009] The beneficial effect of adopting the above-mentioned further technical solution is: the rotary power cylinder drives the rotary drive disk to rotate through the rotary pin mechanism, the rotary drive disk drives the rotating shaft to rotate on the rotating shaft support seat, and the rotating shaft then drives the pressure head mounting frame to rotate, thereby realizing the selection of test pressure heads of different specifications.

[0010] Furthermore, the rotary latch mechanism includes a drive seat, a plug-in drive cylinder and a drive latch. The drive seat is movably mounted on the pressure test substrate. The piston rod of the rotary power cylinder is connected to the drive seat. The plug-in drive cylinder is mounted on the drive seat. The end of the piston rod of the plug-in drive cylinder is connected to the drive latch. A plurality of drive pin holes are provided on the rotary drive disk corresponding to the drive latch.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is that the piston rod of the rotary power cylinder is extended and reciprocated to drive the drive seat on the pressure test base plate, and the piston rod of the plug-in drive cylinder is extended and reciprocated to drive the drive pin into the corresponding drive pin hole, thereby realizing the driving of the rotary drive disk. Specifically, when the piston rod of the rotary power cylinder is extended, the drive seat is driven to move to one side of the rotary drive disk, the piston rod of the plug-in drive cylinder is extended, and the drive pin is inserted into the drive pin hole. Then the piston rod of the rotary power cylinder retracts, driving the drive seat to move in the opposite direction, thereby driving the plug-in drive cylinder and the drive pin to move, and the drive pin drives the rotary drive disk to rotate a fixed angle. By adjusting the stroke of the piston rod of the rotary power cylinder, it is possible to ensure that the distance moved by the drive pin is constant each time, so that the drive pin drives the rotary drive disk to rotate a certain angle each time, so that the angle of rotation of the rotating shaft driven by the rotary drive disk is fixed, thereby ensuring that the pressure test head can be in the correct position after each rotation. The rotating pin mechanism ensures a stable connection between the rotary power cylinder and the rotary drive disk, making the selection process of the pressure test head more stable and reliable, and improving the operating stability and pressure test accuracy of the equipment.

[0012] Furthermore, the quick-plug mechanism includes a quick plug, a quick socket, a movable seat, a tensioning power cylinder and a quick-plug power cylinder. The movable seat is movably mounted on the pressure test substrate. The quick plug and the tensioning power cylinder are mounted on the movable seat. The piston rod end of the tensioning power cylinder is connected to the quick plug. The quick socket is mounted on the pressure head mounting frame. The number of the quick sockets corresponds to the number of the pressure head mounting plates. An air circuit 1 is provided in the piston rod of the tensioning power cylinder. The air circuit 1 is connected to the quick plug. An air circuit 2 is provided in the pressure head mounting plate. The air circuit 2 is respectively connected to the quick socket and the pressure test head mounted on the pressure head mounting plate; the quick-plug power cylinder is mounted on the pressure test substrate. The piston rod of the quick-plug power cylinder is connected to the movable seat.

[0013] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the piston rod of the quick-insert power cylinder retracts and drives the movable seat to move back and forth on the pressure test base plate. When the piston rod of the quick-insert power cylinder extends, it drives the movable seat to move toward the pressure head mounting frame. At this time, the piston rod of the tensioning power cylinder extends, pushing the quick plug into the corresponding quick socket, limiting the pressure head mounting plate. At the same time, the quick plug is connected to the quick socket, and the tensioning power cylinder is connected to the air supply equipment. Gas enters air circuit 2 through air path 1, thereby supplying air to the pressure test head installed on the pressure head mounting plate. When the piston rod of the quick-insert power cylinder retracts, it drives the movable seat to move toward the pressure head mounting frame. At the same time, the piston rod of the tensioning power cylinder retracts, pulling the quick plug and quick socket apart, releasing the limit on the pressure head mounting plate, and disconnecting air circuit 1 from air circuit 2, stopping the air supply to the pressure test head on the pressure head mounting plate. The design of the quick-insert mechanism makes the air supply and limiting operation of the pressure test head faster and more convenient, improving the operating efficiency and automation level of the equipment.

[0014] Furthermore, a stop mechanism is provided on the pressure test frame, and the stop mechanism includes a stop power cylinder, the piston rod end of the stop power cylinder passes through the pressure test base plate, the piston rod end of the stop power cylinder is connected to the stop pin, and a plurality of stop limit holes are provided at the bottom of the movable seat.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is: the piston rod of the stop power cylinder is extended and retracted to drive the stop pin to move. When the pressure head mounting plate needs to be limited, the piston rod of the stop power cylinder is extended to drive the stop pin to be inserted into the corresponding stop limit hole to limit the movable seat, thereby achieving stable limitation of the pressure head mounting plate, preventing the pressure head mounting plate from shaking or moving during the pressure test, affecting the pressure test accuracy and safety; when the limit on the pressure head mounting plate needs to be released, the piston rod of the stop power cylinder retracts to drive the stop pin to move out of the stop limit hole. At this time, the movable seat can move freely on the pressure test base plate, thereby facilitating the replacement or adjustment of the pressure test head; the design of the stop mechanism further improves the operating stability and pressure test accuracy of the equipment, and is also conducive to improving the degree of automation and operational convenience of the equipment.

[0016] Furthermore, the rotation limiting mechanism includes a rotation positioning disk and a rotation limiting power cylinder. The rotation positioning disk is installed at the end of the rotating shaft. The piston rod end of the rotation limiting power cylinder is provided with a rotation limiting pin. The rotation positioning disk is circumferentially provided with multiple rotation positioning holes.

[0017] The beneficial effects of adopting the above-mentioned further technical scheme are: the piston rod of the rotary limit power cylinder is extended and retracted to drive the rotary limit pin to move. When the pressure head mounting bracket is rotated to the target position, the piston rod of the rotary limit power cylinder is extended, driving the rotary limit pin to be inserted into the corresponding rotary positioning hole, thereby limiting the rotary shaft, thereby achieving stable limiting of the pressure head mounting bracket, ensuring that the pressure test head is in the correct position, and facilitating subsequent pressure test operations; when the position of the pressure test head needs to be adjusted, the piston rod of the rotary limit power cylinder retracts, driving the rotary limit pin to move out of the rotary positioning hole, and the rotary shaft can now rotate freely on the shaft support seat, thereby facilitating the selection or adjustment of the pressure test head; the design of the rotary limit mechanism makes the rotation of the pressure head mounting bracket more stable and reliable, thereby improving the operating stability and pressure test accuracy of the equipment.

[0018] Furthermore, the pressure test rack is also provided with a transposition component, which is arranged between the two pressure test adjustment components. The transposition component includes a transposition mounting plate, and the transposition mounting plate is provided with a tube support plate and a tube transposition plate. The tube support plate is installed on the pressure test rack, and a plurality of V-shaped grooves are provided on the tube support plate, and the V-shaped grooves are arranged corresponding to the pressure test head. The tube transposition plate can be installed on the pressure test rack in a liftable manner, and the tube transposition plate is provided with serrations, and the convex parts of the serrations are arranged corresponding to the concave parts of the V-shaped grooves; the transposition mounting plate is provided with a blanking inclined plate; the transposition component is provided with at least two groups.

[0019] When the piston rod of the replacement jacking cylinder is extended, the pipe changing plate is lifted up and down, and the pipe fitting on the pipe supporting plate is lifted up and away from the V-shaped groove of the pipe supporting plate where it is located. When the pipe changing plate lifts the pipe fitting up until it reaches the highest point of the V-shaped groove, the pipe fitting loses the obstruction of the inner wall of the V-shaped groove and slides to the top of the next V-shaped groove under the action of the serrated slope of the pipe changing plate. At this time, the piston rod of the replacement jacking cylinder is retracted, driving the pipe changing plate to descend, so that the pipe fitting falls to the next V-shaped groove of the pipe supporting plate, thereby realizing the replacement operation of the pipe fitting in different grooves of the pipe supporting plate. The V-shaped groove design ensures stable placement of the pipe on the pipe support plate, preventing any shaking or movement during the pressure test, which could affect accuracy and safety. The transposition assembly comprises at least two groups, providing stable support for the pipe and ensuring greater stability during the transposition process. A cutting ramp is located at the end of the transposition mounting plate away from the second transfer assembly. The end of the cutting ramp is tilted downward to facilitate the unloading of pipes after the pressure test.

[0020] Furthermore, the internal water blowing equipment includes an internal water blowing frame, a plurality of arc-shaped trough plates are provided on the internal water blowing frame, both ends of the arc-shaped trough plates are mounted on the internal water blowing frame by chains, and an air blowing assembly is provided at the end of the internal water blowing frame, the air blowing assembly includes an alignment mounting plate, a water blowing alignment cylinder and a plurality of air blowing heads arranged on the alignment mounting plate, the alignment mounting plate is movably mounted on the internal water blowing frame, the alignment mounting plate is driven by the water blowing alignment cylinder, and the plurality of air blowing heads are respectively connected to the air supply equipment through air circuit three, and an electromagnetic valve is provided on the air circuit three.

[0021] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the arc-shaped trough plate is used to place pipe fittings, and the pipe fittings move on the arc-shaped trough plate as the chain moves. When there are pipe fittings on the arc-shaped trough plate, the blowing assembly is started, and the blowing head blows air inside the pipe fitting to remove residual moisture inside the pipe fitting. The design of the alignment mounting plate enables the blowing head to accurately align the pipe fittings, ensuring the accuracy and effectiveness of the blowing operation. The setting of the solenoid valve can control the opening and closing of the blowing head, and can realize air supply only to the blowing head on the workstation with pipe fittings, thereby realizing precise control of the blowing operation and avoiding unnecessary energy waste. The design of the internal water blowing equipment makes the removal of moisture inside the pipe fittings more efficient and automated, which is conducive to improving the production efficiency and product quality of pipe fitting processing.

[0022] Furthermore, the flaw detection equipment includes a flaw detection frame, an external water blowing component and a flaw detection component, the external water blowing component and the flaw detection component are respectively arranged on the flaw detection frame, and the flaw detection frame is also provided with a pipe conveying mechanism, and the pipe conveying mechanism passes through the external water blowing component and the flaw detection component in sequence; the flaw detection component includes a flaw detection movable plate, and the flaw detection movable plate is movably mounted on the flaw detection frame, and the moving direction of the flaw detection movable plate is perpendicular to the conveying direction of the pipe conveying mechanism. A plurality of flaw detection mechanisms are provided on the flaw detection movable plate, and a pipe pressing component is respectively provided at the rear end of the external water blowing component and the front and rear ends of the flaw detection component, and the pipe pressing component includes a pipe pressing power cylinder, and a pipe pressing roller is rotatably provided at the piston rod end of the pipe pressing power cylinder.

[0023] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the pipe fitting is placed on the pipe conveying mechanism, which drives the pipe fitting through the external water blowing assembly and the flaw detection assembly in sequence. The external water blowing assembly blows water on the outside of the pipe fitting to remove moisture from the pipe fitting, preventing it from interfering with subsequent flaw detection operations. The flaw detection movable plate of the flaw detection assembly moves on the flaw detection frame, allowing the appropriate flaw detection mechanism to be selected according to the pipe fitting size. The flaw detection mechanism on the flaw detection movable plate performs flaw detection on the pipe fitting to detect defects or damage. By providing a pipe pressing assembly, the piston rod of the pipe pressing power cylinder extends as the pipe fitting passes through the external water blowing assembly and the flaw detection assembly, driving the pipe pressing roller to press the pipe fitting tightly, ensuring the stability of the pipe fitting during the external water blowing and flaw detection process, and preventing any shaking or movement of the pipe fitting from affecting the flaw detection accuracy and safety. The pipe pressing roller is rotatably arranged at the end of the piston rod of the pipe pressing power cylinder, which can reduce friction between the pipe pressing roller and the pipe fitting, making the pipe fitting conveyed more smoothly.

[0024] Furthermore, the first material transfer assembly is arranged on the flaw detection frame, and the first material transfer assembly includes a jacking mechanism, a material turning and blocking mechanism and a material guide plate. The jacking mechanism includes a jacking plate and a jacking power cylinder. The jacking power cylinder is installed on the flaw detection frame, and the piston rod end of the jacking power cylinder is connected to the jacking plate. The top of the jacking plate is provided with a slope toward the internal water blowing device. There are multiple material guide plates, and multiple material guide plates are installed on the flaw detection frame. The material guide plate is provided with an inclined surface inclined downward toward the internal water blowing device. The height of the material guide plate is greater than the internal The height of the feed end of the water blowing equipment; the material turning and blocking mechanism includes a turning shaft, a turning plate and a turning power cylinder, the turning power cylinder is installed on the flaw detection frame, the turning shaft is rotatably installed on the flaw detection frame, the turning plate is fixedly installed on the turning shaft, the piston rod end of the turning power cylinder is connected to the turning shaft through a connecting plate, one end of the connecting plate is fixedly connected to the turning shaft, and the other end of the connecting plate is hinged to the piston rod end of the turning power cylinder, and a material collection trough is provided on the side of the flaw detection frame, and the material collection trough is provided below the guide plate.

[0025] The beneficial effect of adopting the above-mentioned further technical solution is that after the pipe fittings have completed flaw detection inspection in the flaw detection equipment, they are transported to the internal water blowing equipment by the first material transfer assembly. Specifically, the piston rod of the jacking power cylinder extends, driving the jacking plate to rise. The pipe fitting is lifted by the jacking plate and slides along the slope above it onto the guide plate. At this time, the piston rod of the turning power cylinder retracts, driving the turning shaft to rotate toward the internal water blowing equipment through the connecting plate. The turning plate rotates with the turning shaft and tilts downward toward the internal water blowing equipment. The pipe fitting slides along the inclined surface of the guide plate onto the turning plate, and then slides from the turning plate into the arc-shaped groove plate of the internal water blowing equipment. The height design of the guide plate allows the pipe fitting to slide smoothly into the internal water blowing equipment while preventing collision or damage to the pipe fitting during the sliding process. The collecting trough is provided on the side of the flaw detection machine frame, below the guide plate, and is used to collect the pipe fittings that fail the flaw detection. Specifically, when the flaw detection equipment determines that the pipe fittings are unqualified, the piston rod of the jacking power cylinder is extended, driving the jacking plate to rise. Before or at the same time as the pipe fittings are lifted by the jacking plate, the piston rod of the flipping power cylinder is extended, and the flipping shaft is driven to rotate in the direction of the flaw detection equipment through the connecting plate. The flipping turntable rotates with the flipping turntable until the flipping turntable is in an upright state. After the pipe fittings slide along the slope above the jacking plate to the guide plate, they are blocked by the flipping turntable and slide into the collecting trough, realizing the automatic collection of waste pipes and preventing waste pipes from entering the subsequent inspection procedures.

[0026] The lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism, and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that lifts the lifting device and the lifting mechanism is a lifting mechanism that

[0027] The beneficial effect of adopting the above further technical solution is that after the internal water blowing operation is completed, the pipe fitting is transported to the pressure testing equipment by the second material transfer assembly. The pipe is then lifted up and the pipe is then driven to the feeding ramp on the top of the feed rack by the chain. The loading ramp is located at one end of the transposition mounting plate near the second transfer assembly, allowing the pipe fittings to slide smoothly onto the pipe support plate of the transposition assembly while preventing collisions or damage to the pipe fittings during the sliding process. When the pipe fittings are temporarily stored on the storage plate, the piston rods of the two pressure test alignment cylinders of the alignment mechanism extend, driving the alignment top plate to move, thereby aligning the pipe fittings and ensuring the accurate positioning of both ends of the pipe fittings, preventing the skewed position of the pipe fittings from affecting subsequent pressure tests. The design of the second transfer assembly enables the automated transfer of pipe fittings from the internal water blowing equipment to the pressure test equipment, improving the operating efficiency and degree of automation of the equipment, while also ensuring the stability and safety of the pipe fittings during the transfer process.

[0028] After the pressure test operation is completed, the pipe fittings are transported to the second transfer assembly for subsequent transfer and processing. The buffer rack is used to temporarily store pipe fittings. The storage plate is provided with multiple slots for placing pipe fittings. The baffle plate is designed to prevent the pipe fittings from sliding off the storage plate. When the pipe fittings need to be transferred, the piston rod of the feeding jacking cylinder extends, driving the jacking connecting rod and the ejection plate to rise. The inclined surface design of the ejection plate allows the pipe fittings to slide along the inclined surface to the loading ramp on the transposition mounting plate after being lifted, thereby realizing the automated transfer of the pipe fittings from the buffer rack to the pressure test assembly. The loading ramp is provided at one end of the transposition mounting plate close to the second transfer assembly. The pipe fittings slide along the loading ramp to the transposition mounting plate, facilitating subsequent transposition operations. At the same time, by setting up an alignment mechanism, before the pipe fitting is lifted up and slides onto the loading ramp, the piston rod of the pressure test alignment cylinder is extended, driving the alignment top plate to align the pipe fitting, ensuring that the pipe fitting can slide onto the loading ramp accurately and stably, avoiding displacement or collision of the pipe fitting during the sliding process, affecting the accuracy and safety of the subsequent pressure test operation.

[0029] The design of the first material transfer assembly and the second material transfer assembly realizes the automated transfer of pipe fittings from the flaw detection equipment to the internal water blowing equipment, the automated collection of waste pipes, and the automated and efficient transfer of pipe fittings from the internal water blowing equipment to the pressure testing equipment. At the same time, it ensures the stability and accuracy of the pipe fittings during the transfer process, which is beneficial to improving the operating efficiency and pressure testing accuracy of the equipment, and also helps to ensure the stability and safety of the pipe fittings during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 is a side view of the present invention;

[0032] Figure 3 A top view of the present invention;

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the pressure testing equipment of the present invention;

[0034] Figure 5 for Figure 4 A magnified view of point A;

[0035] Figure 6 for Figure 4 Enlarged view of point C;

[0036] Figure 7 This is the main view of the pressure test equipment;

[0037] Figure 8 This is the rear view of the pressure test equipment;

[0038] Figure 9 This is a top view of the pressure test equipment;

[0039] Figure 10 It is a schematic diagram of the three-dimensional structure of the flaw detection equipment;

[0040] Figure 11 for Figure 10 Enlarged view of point B;

[0041] Figure 12 for Figure 10 Enlarged view of point D;

[0042] Figure 13 It is a side view of the flaw detection equipment;

[0043] Figure 14 It is a schematic diagram of the three-dimensional structure of the internal water blowing device of the present invention;

[0044] Figure 15 for Figure 14 Enlarged view of point E;

[0045] Figure 16 It is a top view of the inner water blowing device of the present invention.

[0046] The reference numerals are as follows: 100, flaw detection equipment; 101, flaw detection frame; 102, external water blowing assembly; 103, tube conveying mechanism; 1031, conveying roller; 104, flaw detection movable plate; 105, flaw detection guide rail; 106, flaw detection mechanism; 107, tube pressing power cylinder; 108, tube pressing roller; 109, mounting support plate; 110, shaft seat plate; 111, feed guide inclined plate; 200, internal water blowing equipment; 201, internal water blowing frame; 202, arc-shaped trough plate; 203, chain; 204, alignment mounting plate; 205, air blowing head; 206, water blowing alignment cylinder; 300, pressure test equipment; 301, pressure test frame; 302, pressure test base plate; 303, pressure head mounting frame; 304, mounting frame; 305, pressure head mounting plate; 306, frame end plate; 307, connecting plate; 308, reinforcement plate; 309, pressure test head; 310, rotating shaft; 311, rotating shaft support seat; 312, rotating drive disk; 3121, drive pin hole; 313, quick plug; 314, Quick socket; 315, moving seat; 316, tensioning power cylinder; 317, quick plug power cylinder; 318, five-way high-pressure valve; 319, high-pressure solenoid valve; 320, stop power cylinder; 321, rotary positioning plate; 3211, rotary positioning hole; 323, rotary limit pin; 324, pipe support plate; 325, pipe transposition plate; 326, drive seat; 327, plug-in drive cylinder; 328, drive pin; 329, transposition mounting plate; 330, unloading inclined plate; 331, loading inclined plate; 4 00, the first material transfer assembly; 401, the lifting power cylinder; 402, the lifting plate; 403, the material guide plate; 404, the material turning shaft; 405, the material turning rotary plate; 406, the material turning power cylinder; 407, the connecting plate; 408, the material collecting trough; 500, the second material transfer assembly; 501, the buffer rack; 502, the material storage plate; 503, the material blocking plate; 504, the material feeding lifting cylinder; 505, the lifting connecting rod; 506, the material blanking plate; 507, the material ejecting plate; 508, the pressure test alignment cylinder; 509, the alignment top plate. DETAILED DESCRIPTION

[0047] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0048] See also Figures 1-16 A pipe leak detection device includes a flaw detection device 100, an internal water blowing device 200 and a pressure testing device 300. A first material transfer component 400 is provided between the flaw detection device 100 and the internal water blowing device 200, and a second material transfer component 500 is provided between the internal water blowing device 200 and the pressure testing device 300.

[0049] Specifically, in this embodiment, see Figure 4-Figure 9 The pressure test equipment 300 includes a pressure test rack 301, on which two groups of pressure test adjustment components are provided, and the two groups of pressure test adjustment components are arranged opposite to each other, and the pressure test adjustment components include a pressure test substrate 302, and the pressure test substrate 302 is movably mounted on the pressure test rack 301; the movement of the pressure test substrate 302 on the pressure test rack 301 is realized by a substrate guide rail and a substrate moving power cylinder, and the substrate guide rail and the substrate moving power cylinder are mounted on the pressure test rack 301, and the pressure test substrate 302 is slidably arranged on the substrate guide rail, and the substrate moving power cylinder is realized. The piston rod end of the power cylinder is connected to the pressure test base plate 302. Since the pressure test base plate 302 is movably mounted on the pressure test rack 301, the components of the pressure test adjustment assembly can be moved on the pressure test rack 301. In addition to being able to conveniently align with the pipe port for compression testing, the distance between the two groups of pressure test adjustment assemblies can be adjusted by setting the moving stroke of the pressure test base plate 302 of one group of pressure test adjustment assemblies to be larger, that is, the length of the base plate guide rail is set to be longer, so that the pressure test equipment 300 of the present invention can be adapted to the pressure testing of pipes of different lengths. The pressure test substrate 302 is provided with a pressure head mounting frame 303, a rotation limiting mechanism, a quick insertion mechanism and a rotation driving mechanism. The pressure head mounting frame 303 is rotatably mounted on the pressure test substrate 302. Specifically, the pressure head mounting frame 303 includes a mounting frame body 304 and a plurality of pressure head mounting plates 305 arranged circumferentially along the mounting frame body 304. The mounting frame body 304 includes two frame end plates 306, and a plurality of connecting plates 307 are radially provided on the frame end plates 306. The two ends of the pressure head mounting plate 305 are respectively connected to the connecting plates 307. In order to improve the strength of the mounting frame 304, a reinforcing plate 308 is further provided between the two opposite connecting plates 307. The pressure head mounting plate 305 is provided with a plurality of test pressure heads 309. In order to improve processing efficiency, the pressure head mounting plate 305 is provided with a plurality of test pressure heads 309. The multiple test pressure heads 309 on each pressure head mounting plate 305 are arranged in parallel and spaced apart, reserving a position for pressure test fittings. Pressure test heads 309 of different specifications are arranged on different pressure head mounting plates 305 to meet the pressure test requirements of pipe fittings of different sizes. By rotating the pressure head mounting frame 303, pressure test heads 309 of different specifications are selected for pressure testing. The installation position of the pressure test head 309 on the pressure head mounting plate 305 can be differentiated according to the specifications of the pressure test head 309, so that the height of the pressure test head 309 can be adapted to the size of the pipe fitting.

[0050] The rotary drive mechanism is used to provide power for the rotation of the pressure head mounting plate 305. Specifically, in this embodiment, the rotary drive mechanism includes a rotary shaft 310, a rotary shaft support seat 311, a rotary drive disk 312 and a rotary power cylinder. The rotary shaft support seat 311 is symmetrically provided with two, and the two rotary shaft support seats 311 are mounted on the pressure test substrate 302. The two ends of the rotary shaft 310 are rotatably mounted on the rotary shaft support seat 311, the pressure head mounting frame 303 is mounted on the rotary shaft 310, the rotary drive disk 312 is mounted on the end of the rotary shaft 310, and the rotary power cylinder is mounted on the pressure test substrate 302. The piston rod of the rotary power cylinder is connected to the rotary drive disk 312 by a rotary pin mechanism.

[0051] The rotary latch mechanism includes a drive seat 326, a plug-in drive cylinder 327 and a drive latch 328. The drive seat 326 is movably mounted on the pressure test substrate 302. The piston rod of the rotary power cylinder is connected to the drive seat 326. The plug-in drive cylinder 327 is mounted on the drive seat 326. The piston rod end of the plug-in drive cylinder 327 is connected to the drive latch 328. A plurality of drive pin holes 3121 are provided on the rotary drive disk 312 corresponding to the drive latch 328. The present invention does not limit the specific structure of the rotary power cylinder, as long as it can drive the drive seat 326 to move on the pressure test substrate 302. In this embodiment, the rotary power cylinder is a pneumatic cylinder. The piston rod of the rotary power cylinder is extended and retracted to drive the driving seat to move back and forth on the pressure test base plate 302, and the piston rod of the plug-in driving cylinder 327 is extended and retracted to drive the driving pin 328 to be inserted into the corresponding driving pin hole 3121, thereby driving the rotating driving disk 312. Specifically, when the piston rod of the rotary power cylinder is extended, the driving seat 326 is driven to move to one side of the rotating driving disk 312, the piston rod of the plug-in driving cylinder 327 is extended, driving the driving pin 328 to be inserted into the driving pin hole 3121, and then the piston rod of the rotary power cylinder is retracted. The drive seat 326 is driven to move in the opposite direction, thereby driving the plug-in drive cylinder 327 and the drive latch 328 to move. The drive latch 328 drives the rotating drive disk 312 to rotate a fixed angle. By adjusting the piston rod stroke of the rotary power cylinder, it is possible to ensure that the drive latch 328 moves a certain distance each time, so that the drive latch 328 drives the rotating drive disk 312 to rotate a certain angle each time. The rotating drive disk 312 drives the rotating shaft 310 to rotate at a fixed angle, thereby ensuring that the pressure test head 309 is accurately positioned after each rotation. The rotating latch mechanism ensures a stable connection between the rotary power cylinder and the rotating drive disk 312, making the selection process of the pressure test head 309 smoother and more reliable, and improving the operational stability of the equipment and the pressure test accuracy.

[0052] The quick-insertion mechanism is used to limit the pressure head mounting plate 305 and supply air to the pressure test head 309. Specifically, the quick-insertion mechanism includes a quick plug 313, a quick socket 314, a movable seat 315, a tensioning cylinder 316 and a quick-insertion cylinder 317. The movable seat 315 is movably mounted on the pressure test substrate 302. Specifically, a quick-insertion guide rail is provided on the pressure test substrate 302, and the movable seat 315 is slidably mounted on the quick-insertion guide rail. The quick plug 313 and the tensioning cylinder 316 are mounted on the movable seat 315. The piston rod end of the tensioning cylinder 316 is connected to the quick plug 313, and the quick socket 314 is mounted on the pressure head mounting frame 303. Specifically, the quick socket 314 is mounted on the connecting end plate. The number of the quick sockets 314 corresponds to the number of the pressure head mounting plates 305. A plurality of air paths are provided on the piston rod of the tensioning cylinder 316. The air paths are connected to the The quick plug 313 is connected, and the quick plug 313 is correspondingly provided with multiple plug holes. The pressure head mounting plate 305 is provided with multiple air circuits 2, and the multiple air circuits 2 are respectively connected to the quick socket 314 and the pressure test head 309 installed on the pressure head mounting plate 305. The quick socket 314 is provided with multiple socket holes. The tensioning power cylinder 316 is connected to the air supply equipment through the five-way high-pressure valve 318 and the high-pressure solenoid valve 319. The five-way high-pressure valve 318 and the high-pressure solenoid valve 319 achieve the effect of supplying air to a single pressure test head 309, so that the pressure test equipment 300 of the present invention can adapt to the operation of pressure testing a single pipe fitting or pressure testing multiple pipe fittings at the same time; the quick-insert power cylinder 317 is installed on the pressure test base plate 302, and the piston rod of the quick-insert power cylinder 317 is connected to the movable seat 315. The movable seat 315 is driven to move by the extension and contraction of the piston rod of the quick-insert power cylinder 317, thereby realizing the quick plugging of the quick plug 313 and the quick socket 314.

[0053] The pressure test frame 301 is also provided with a stop mechanism comprising a stop cylinder 320. The piston rod of the stop cylinder 320 extends through the pressure test base plate 302 and is connected to a stop pin (not shown). The bottom of the movable seat 315 is provided with a plurality of stop holes. The stop pins of the stop mechanism are inserted into the stop holes at the bottom of the movable seat 315 to stop the position of the movable seat 315, thereby improving the stability of the present invention.

[0054] The rotation limiting mechanism is used to limit the rotation of the pressure head mounting bracket 303. Specifically, the rotation limiting mechanism includes a rotation positioning disk 321 and a rotation limiting power cylinder. The rotation positioning disk 321 is installed at the end of the rotating shaft 310. The rotation positioning disk 321 is circumferentially provided with a plurality of rotation positioning holes 3211. The rotation positioning holes 3211 are circumferentially provided on the outer side surface of the rotation positioning disk 321. The rotation positioning holes 3211 are arranged corresponding to the positions of the plurality of pressure head mounting plates 305 on the pressure head mounting bracket 303. The piston rod end of the rotation limiting power cylinder is provided with a rotation limiting pin 323. The rotation limiting pin 323 is inserted into the rotation positioning hole 3211 on the rotation positioning disk 321 to lock the rotation positioning disk 321, thereby limiting the rotation of the rotation positioning disk 321 and locking the position of the test pressure head 309.

[0055] The pressure test rack 301 is also provided with a transposition assembly, which is arranged between the two pressure test adjustment assemblies. The transposition assembly includes a transposition mounting plate 329, which is movably mounted on the pressure test rack 301, so as to adjust the positions of the various components of the transposition assembly on the pressure test rack 301. The transposition mounting plate 329 is provided with a tube support plate 324 and a tube transposition plate 325. The tube support plate 324 is mounted on the pressure test rack 301, and the tube support plate 324 is mounted on the pressure test rack 301. The test frame 301 is provided with a plurality of V-shaped grooves, which are arranged corresponding to the test head 309. The pipe fittings are supported by the pipe support plate 324, and the V-shaped grooves can provide stable support for the pipe fittings. The pipe replacement plate 325 can be lifted and lowered on the test frame 301. Specifically, the test frame 301 is provided with a replacement cylinder, and the end of the piston rod of the replacement cylinder is connected to the pipe replacement plate 325. The pipe replacement plate 325 is provided with serrations, and the convex parts of the serrations are arranged corresponding to the concave parts of the V-shaped grooves. The piston rod of the replacement cylinder is extended, driving the pipe replacement plate 325 to rise, so that the height of the serrations on the pipe replacement plate 325 gradually exceeds the height of the V-shaped grooves, thereby lifting the pipe fittings on the V-shaped grooves. After the pipe fittings are lifted out of the V-shaped grooves, the pipe fittings slide to the next V-shaped groove under the action of the slope of the serrations, thereby achieving the replacement effect of the pipe fittings. A material discharge inclined plate 330 is provided on the transposition mounting plate 329, and one end of the material discharge inclined plate 330 is at the same height as the end of the tube support plate 324, and the other end of the material discharge inclined plate 330 is tilted downward toward the outside of the pressure test frame 301, so as to discharge and convey the pipe fittings that have completed the pressure test; the transposition assembly is provided with at least two groups. In this embodiment, the transposition assembly is provided with four groups, so as to provide stable support for the pipe fittings and ensure the stability of the pipe fittings during the transposition process.

[0056] See also Figure 14-16The internal water blowing equipment 200 includes an internal water blowing frame 201, and a plurality of arc-shaped slot plates 202 are provided on the internal water blowing frame 201. The two ends of the arc-shaped slot plates 202 are installed on the internal water blowing frame 201 through chains 203. The chain 203 is driven by a motor, and the motor drives the chain 203 to rotate, thereby driving the arc-shaped slot plates 202 on the chain 203 to move, thereby realizing the movement of the pipe fittings in the internal water blowing equipment 200. An air blowing assembly is provided at the end of the internal water blowing frame 201, and the air blowing assembly includes an alignment mounting plate 204, a water blowing alignment cylinder 206, and a plurality of air blowing heads 205 provided on the alignment mounting plate 204. The alignment mounting plate 204 is movably mounted on the internal water blowing frame 201. The water blowing alignment cylinder 206 is installed on the inner water blowing frame 201, and the piston rod end of the water blowing alignment cylinder 206 is connected to the alignment mounting plate 204. The alignment mounting plate 204 is driven to move by the water blowing alignment cylinder 206, thereby driving the blowing head 205 to move, so as to realize blowing at the pipe port. The multiple blowing heads 205 are respectively connected to the air supply equipment through the air circuit three, and the air circuit three is a pipeline connecting the blowing head 205 and the air supply equipment; the air circuit three is provided with a solenoid valve, and the air supply to each blowing head 205 is opened and closed by multiple solenoid valves, so as to avoid the need to realize the blowing work of multiple blowing stations as long as the air supply equipment is started, thereby reducing the waste of compressed air and the energy consumption of the compressor.

[0057] See also Figure 10-13The flaw detection equipment 100 includes a flaw detection frame 101, an external water blowing component 102 and a flaw detection component, the external water blowing component 102 and the flaw detection component are respectively arranged on the flaw detection frame 101, and the flaw detection frame 101 is also provided with a pipe conveying mechanism 103, and the pipe conveying mechanism 103 passes through the external water blowing component 102 and the flaw detection component in sequence; the flaw detection component includes a flaw detection movable plate 104, and the flaw detection movable plate 104 is movably mounted on the flaw detection frame 101. Specifically, the flaw detection frame 101 is provided with a flaw detection guide rail 105, and the flaw detection movable plate 104 is slidably mounted on the flaw detection guide rail 105. The moving direction of the flaw detection movable plate 104 is perpendicular to the conveying direction of the pipe conveying mechanism 103, and a plurality of flaw detection mechanisms 106 are provided on the flaw detection movable plate 104 to adapt to the flaw detection operation of pipe fittings with different diameters. The pipe conveying mechanism 103 includes a conveying motor and multiple conveying rollers 1031. The conveying motor is in driving connection with the conveying rollers 1031. The middle portion of the conveying rollers 1031 is designed to be V-shaped, and the pipes are conveyed in the middle portion of the conveying rollers 1031. The V-shaped design of the conveying rollers 1031 provides more stable support for the pipes, preventing them from moving. The feed end of the flaw detection rack 101 is equipped with multiple feed guide ramps 111. These multiple feed guide ramps 111 are arranged in parallel and tilted downward toward the flaw detection rack 101, thereby providing guidance for the feeding of pipes into the flaw detection rack 101.

[0058] The rear end of the external water blowing component 102 and the front and rear ends of the flaw detection component are respectively provided with a pipe pressing component, and the pipe pressing component includes a pipe pressing power cylinder 107. The piston rod end of the pipe pressing power cylinder 107 is rotatably provided with a pipe pressing roller 108. The pipe pressing roller 108 is provided with a pipe pressing groove along the circumference. The curvature of the pipe pressing groove is adapted to the curvature of the pipe fitting, which is convenient for pressing the pipe fitting. The pipe fitting on the pipe conveying mechanism 103 is pressed by the pipe pressing component without affecting the pipe conveying, thereby improving the stability of the pipe conveying and ensuring the effect of external water blowing and flaw detection.

[0059] The first material transfer assembly 400 is arranged on the flaw detection frame 101, and the first material transfer assembly 400 includes a lifting mechanism, a material turning and blocking mechanism, and a material guide plate 403. The lifting mechanism includes a lifting plate 402 and a lifting power cylinder 401. The lifting power cylinder 401 is installed on the flaw detection frame 101, and the piston rod end of the lifting power cylinder 401 is connected to the lifting plate 402. The top of the lifting plate 402 is provided with a slope toward the internal water blowing device 200. There are multiple material guide plates 403, and multiple material guide plates 403 are installed on the flaw detection frame 101. The guide plate 403 is provided with an inclined surface inclined downward toward the internal water blowing device 200, and the height of the guide plate 403 is greater than the height of the feed end of the internal water blowing device 200; the material turning and blocking mechanism includes a turning shaft 404, a turning plate 405 and a turning power cylinder 406, the turning power cylinder 406 is mounted on the flaw detection frame 101, and the turning shaft 404 is rotatably mounted on the flaw detection frame 101. Specifically, a plurality of mounting support plates 109 are provided on the flaw detection frame 101, and a shaft seat plate 110 is provided on the top of the mounting support plate 109. The turning plate 405 is fixedly mounted on the turning shaft 404, and the piston rod end of the turning cylinder 406 is connected to the turning shaft 404 through a connecting plate 407. One end of the connecting plate 407 is fixedly connected to the turning shaft 404, and the other end of the connecting plate 407 is hinged to the piston rod end of the turning cylinder 406. A material collection trough 408 is provided on the side of the flaw detection frame 101, and the material collection trough 408 is provided below the guide plate 403. The turning shaft 404 and the turning plate 405 are provided on the material collection trough. 408 is on the side away from the flaw detection rack 101. When the flaw detection mechanism 106 detects that the pipe fitting is damaged and does not meet the use requirements and cannot be subsequently tested, the pipe fitting is determined to be waste. At this time, the piston rod of the turning cylinder 406 extends, driving the connecting plate 407 to rotate, and the connecting plate 407 drives the turning shaft 404 to rotate toward the flaw detection rack 101, thereby driving the multiple turning plates 405 on the turning shaft 404 to rotate until the turning plates 405 are in an upright state, blocking the waste, so that the waste enters the collecting trough 408 under the guidance of the guide plate 403 for collection and storage, waiting for subsequent processing;When the flaw detection mechanism 106 detects that the pipe fitting is free of flaws and can proceed with subsequent pressure testing, the pipe fitting is determined to be normal material. At this time, the piston rod of the material turning power cylinder 406 retracts, driving the connecting plate 407 to rotate away from the flaw detection frame 101. The connecting plate 407 drives the material turning shaft 404 to rotate, thereby driving the multiple material turning plates 405 on the material turning shaft 404 to rotate until their top surfaces tilt toward the internal water blowing device 200. The pipe fitting is guided by the guide plate 403 and slides onto the material turning plates 405. Under the guidance of the material turning plates 405, it slides down toward the internal water blowing device 200, allowing the pipe fitting to enter the internal water blowing device 200 for subsequent inspection.

[0060] The second material transfer assembly 500 is arranged on the pressure test rack 301, and the second material transfer assembly 500 includes a cache rack 501, an alignment mechanism and a feeding mechanism. The cache rack 501 is installed on the pressure test rack 301, and a plurality of storage plates 502 are provided on the top of the cache rack 501. The storage plates 502 are provided with a baffle plate 503 at one end close to the pressure test rack 301. The top of the baffle plate 503 is connected with a blanking plate 506, and the end of the blanking plate 506 is tilted downward toward the pressure test rack 301. The feeding mechanism includes a feeding lifting cylinder 504, which is installed on one side of the pressure test rack 301. There are multiple feeding lifting cylinders 504, and the piston rod ends of the multiple feeding lifting cylinders 504 are connected with a lifting connecting rod 505. , a plurality of ejecting plates 507 are provided on the lifting connecting rod 505 corresponding to the material storage plate 502, and the top surface of the ejecting plate 507 is provided with an inclined surface inclined downward toward the pressure test frame 301; the end of the transposition mounting plate 329 close to the second material transfer assembly 500 is provided with a loading inclined plate 331, and the end of the loading inclined plate 331 is inclined toward the tube support plate 324, and the height of one end of the loading inclined plate 331 is lower than the height of the blanking plate 506, and the height of the other end of the loading inclined plate 331 is level with the end of the tube support plate 324; the alignment mechanism includes two pressure test alignment cylinders 508 arranged opposite to each other, and the pressure test alignment cylinders 508 are arranged on the outside of both ends of the lifting connecting rod 505, and the piston rod end of the pressure test alignment cylinder 508 is connected to the alignment top plate 509.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe leak detection device, comprising a flaw detection device (100), characterized in that: The device further comprises an internal water blowing device (200) and a pressure test device (300), wherein a first material transfer assembly (400) is provided between the flaw detection device (100) and the internal water blowing device (200), and a second material transfer assembly (500) is provided between the internal water blowing device (200) and the pressure test device (300), and the pressure test device (300) comprises a pressure test frame (301), and two groups of pressure test adjustment assemblies are provided on the pressure test frame (301), and the two groups of pressure test adjustment assemblies are arranged opposite to each other, and the pressure test adjustment assembly comprises a pressure test substrate (302), and the pressure test substrate (302) is movably mounted on the pressure test frame (301). A pressure head mounting frame (303), a rotation limiting mechanism, a quick plug mechanism and a rotation driving mechanism are provided on (302); the pressure head mounting frame (303) is rotationally mounted on the pressure test substrate (302); a plurality of pressure head mounting plates (305) are provided on the circumference of the pressure head mounting frame (303); a plurality of pressure test heads (309) are provided on the pressure head mounting plate (305); the rotation limiting mechanism is used to limit the rotation of the pressure head mounting frame (303); the quick plug mechanism is used to limit the position of the pressure head mounting plate (305) and supply air to the pressure test head (309); and the rotation driving mechanism is used to provide power for the rotation of the pressure head mounting plate (305).

2. The pipe leak detection device according to claim 1, characterized in that: The rotary drive mechanism comprises a rotary shaft (310), a rotary shaft support seat (311), a rotary drive disk (312) and a rotary power cylinder, wherein two rotary shaft support seats (311) are symmetrically provided, and the two rotary shaft support seats (311) are mounted on the pressure test substrate (302), and both ends of the rotary shaft (310) are rotatably mounted on the rotary shaft support seat (311), the pressure head mounting frame (303) is mounted on the rotary shaft (310), the rotary drive disk (312) is mounted on the end of the rotary shaft (310), and the rotary power cylinder is mounted on the pressure test substrate (302), and the piston rod of the rotary power cylinder is connected to the rotary drive disk (312) via a rotary latch mechanism.

3. The pipe leak detection device according to claim 2, characterized in that: The rotary latch mechanism comprises a drive seat (326), a plug-in drive cylinder (327) and a drive latch (328); the drive seat (326) is movably mounted on the pressure test substrate (302); the piston rod of the rotary power cylinder is connected to the drive seat (326); the plug-in drive cylinder (327) is mounted on the drive seat (326); the end of the piston rod of the plug-in drive cylinder (327) is connected to the drive latch (328); and a plurality of drive pin holes (3121) are provided on the rotary drive disk (312) corresponding to the drive latch (328).

4. The pipe leak detection device according to claim 3, characterized in that: The quick-insertion mechanism comprises a quick plug (313), a quick socket (314), a movable seat (315), a tensioning power cylinder (316) and a quick-insertion power cylinder (317), wherein the movable seat (315) is movably mounted on the pressure test substrate (302), the quick plug (313) and the tensioning power cylinder (316) are mounted on the movable seat (315), the piston rod end of the tensioning power cylinder (316) is connected to the quick plug (313), the quick socket (314) is mounted on the pressure head mounting frame (303), and the quick plug The number of seats (314) is set corresponding to the number of the pressure head mounting plates (305); a first air circuit is provided in the piston rod of the tensioning power cylinder (316); the first air circuit is communicated with the quick plug (313); a second air circuit is provided in the pressure head mounting plate (305); the second air circuit is communicated with the quick plug (314) and the pressure test head (309) installed on the pressure head mounting plate (305); the quick plug power cylinder (317) is installed on the pressure test substrate (302); the piston rod of the quick plug power cylinder (317) is connected to the movable seat (315).

5. The pipe leak detection device according to claim 4, characterized in that: The rotation limiting mechanism comprises a rotation positioning disc (321) and a rotation limiting power cylinder. The rotation positioning disc (321) is mounted on the end of the rotation shaft (310). The piston rod end of the rotation limiting power cylinder is provided with a rotation limiting pin (323). The rotation positioning disc (321) is circumferentially provided with a plurality of rotation positioning holes (3211).

6. The pipe leak detection device according to claim 1, characterized in that: The pressure test frame (301) is further provided with a transposition assembly, which is arranged between the two pressure test adjustment assemblies. The transposition assembly includes a transposition mounting plate (329), and the transposition mounting plate (329) is provided with a tube support plate (324) and a tube transposition plate (325). The tube support plate (324) is installed on the pressure test frame (301), and a plurality of V-shaped grooves are provided on the tube support plate (324), and the V-shaped grooves are arranged corresponding to the pressure test heads (309). The tube transposition plate (325) is installed on the pressure test frame (301) in a liftable manner, and the tube transposition plate (325) is provided with saw teeth, and the convex parts of the saw teeth are arranged corresponding to the concave parts of the V-shaped grooves. The transposition mounting plate (329) is provided with a blanking inclined plate (330). The transposition assembly is provided with at least two groups.

7. The pipe leak detection device according to any one of claims 1 to 6, characterized in that: The internal water blowing device (200) comprises an internal water blowing frame (201), a plurality of arc-shaped slot plates (202) are provided on the internal water blowing frame (201), both ends of the arc-shaped slot plates (202) are mounted on the internal water blowing frame (201) via chains (203), an air blowing assembly is provided at the end of the internal water blowing frame (201), the air blowing assembly comprises an alignment mounting plate (204), a water blowing alignment cylinder (206), and a plurality of air blowing heads (205) arranged on the alignment mounting plate (204), the alignment mounting plate (204) is movably mounted on the internal water blowing frame (201), the alignment mounting plate (204) is driven by the water blowing alignment cylinder (206), and the plurality of air blowing heads (205) are respectively connected to air supply equipment via air path three, and an electromagnetic valve is provided on the air path three.

8. The pipe leak detection device according to claim 7, characterized in that: The flaw detection device (100) comprises a flaw detection frame (101), an external water blowing assembly (102) and a flaw detection assembly, wherein the external water blowing assembly (102) and the flaw detection assembly are respectively arranged on the flaw detection frame (101), and the flaw detection frame (101) is further provided with a pipe conveying mechanism (103), wherein the pipe conveying mechanism (103) passes through the external water blowing assembly (102) and the flaw detection assembly in sequence; the flaw detection assembly comprises a flaw detection movable plate (104), and the flaw detection movable plate (104) is movable The flaw detection movable plate (104) is movably mounted on the flaw detection frame (101); the moving direction of the flaw detection movable plate (104) is perpendicular to the conveying direction of the tube conveying mechanism (103); a plurality of flaw detection mechanisms (106) are provided on the flaw detection movable plate (104); a rear end of the external water blowing assembly (102) and the front and rear ends of the flaw detection assembly are respectively provided with a tube pressing assembly; the tube pressing assembly includes a tube pressing power cylinder (107); and a tube pressing roller (108) is rotatably provided at the end of the piston rod of the tube pressing power cylinder (107).

9. The pipe leak detection device according to claim 8, characterized in that: The first material transfer assembly (400) is arranged on the flaw detection frame (101), and the first material transfer assembly (400) includes a lifting mechanism, a material turning and blocking mechanism, and a material guide plate (403). The lifting mechanism includes a lifting plate (402) and a lifting power cylinder (401). The lifting power cylinder (401) is installed on the flaw detection frame (101). The piston rod end of the lifting power cylinder (401) is connected to the lifting plate (402). The lifting plate (402) is provided with a slope toward the internal water blowing device (200). The guide plates (403) are provided in plurality. The plurality of guide plates (403) are installed on the flaw detection frame (101). The guide plates (403) are provided with an inclined surface inclined downward toward the internal water blowing device (200). The height of the guide plates (403) is greater than the height of the internal water blowing device (200). The feeding end height; the material turning and blocking mechanism comprises a turning shaft (404), a turning plate (405) and a turning power cylinder (406); the turning power cylinder (406) is mounted on the flaw detection frame (101); the turning shaft (404) is rotatably mounted on the flaw detection frame (101); the turning plate (405) is fixedly mounted on the turning shaft (404); the piston rod end of the turning power cylinder (406) is connected to the turning shaft (404) through a connecting plate (407); one end of the connecting plate (407) is fixedly connected to the turning shaft (404); the other end of the connecting plate (407) is hinged to the piston rod end of the turning power cylinder (406); a material collecting trough (408) is provided on the side of the flaw detection frame (101); the material collecting trough (408) is arranged below the material guide plate (403).

10. The pipe leak detection device according to claim 6, characterized in that: The second material transfer assembly (500) is arranged on the pressure test rack (301), and the second material transfer assembly (500) includes a buffer rack (501), an alignment mechanism and a feeding mechanism. The buffer rack (501) is installed on the pressure test rack (301), and a plurality of material storage plates (502) are provided on the top of the buffer rack (501). The material storage plates (502) are provided with a baffle plate (503) at one end close to the pressure test rack (301), and a blanking plate (506) is connected to the top of the baffle plate (503). The feeding mechanism includes a feeding lifting cylinder (504), and the feeding lifting cylinder (504) is installed on one side of the pressure test rack (301). The feeding jacking cylinder (504) is provided with a plurality of piston rods of the plurality of feeding jacking cylinders (504) connected to a jacking connecting rod (505), the jacking connecting rod (505) is provided with a plurality of ejecting plates (507), and the top surface of the ejecting plate (507) is provided with an inclined surface; the end of the transposition mounting plate (329) close to the second material transfer assembly (500) is provided with a feeding inclined plate (331); the alignment mechanism includes two pressure test alignment cylinders (508) arranged opposite to each other, the pressure test alignment cylinders (508) are arranged on the outside of both ends of the jacking connecting rod (505), and the piston rod ends of the pressure test alignment cylinders (508) are connected to the alignment ejecting plates (509).

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