A device for detecting the pressure safety of pressure pipeline medium

Abstract

The present invention relates to the technical field of safety detection of the outer surface of a pressure pipeline in the process of conveying a medium under pressure, and in particular, a device for detecting the safety of a pressure pipeline medium under pressure, comprising a first restraining member and a second restraining member, wherein the front ends of the first restraining member and the second restraining member are movably hinged and tightly fitted at the rear ends, a first pneumatic member is mounted on the first restraining member, and a second pneumatic member is mounted on the second restraining member, and in use, the first restraining member and the second restraining member are sleeved on the outer surface of the pressure pipeline and form a circumferential restraining track, and a dynamic surrounding detector is slidably fitted inside the circumferential restraining track. The present invention realizes rapid detection of the outer surface of the pressure pipeline. Whether it is a straight pipe section or a curved pipe section, the inspector only needs to perform simple operations with a handheld device to quickly complete the inspection work, which greatly improves the inspection efficiency and meets the timeliness requirements of pressure pipeline inspection in different scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of outer surface safety detection of a pressure pipeline in a process of conveying a medium under pressure, and in particular to a detection device for the safety of the medium under pressure in a pressure pipeline. Background Art

[0002] During long-term operation, pressure pipelines may gradually lose pressure due to factors such as medium pressure, temperature, and flow rate, as well as aging, wear, and corrosion of the pressure pipeline materials themselves. Safety testing can accurately assess the actual pressure bearing capacity of pressure pipelines and promptly identify weaknesses and defects in pressure pipelines.

[0003] Furthermore, pressure pipelines are widely used in many fields, including petroleum, chemical, gas, and thermal power, and the media they transport are often flammable, explosive, toxic, and corrosive. Once a pressure pipeline experiences a leak or rupture due to the pressure of the medium, it can cause serious consequences such as fire, explosion, and poisoning, posing a significant threat to the lives of nearby personnel, as well as significant property losses and environmental pollution.

[0004] After searching, a pressure pipe surface defect detection device was disclosed in the patent document with patent application number CN202022847852.8. It mainly uses a servo motor to drive the transmission rod to drive the pressure pipe body to rotate, and fix the two ends of the pressure pipe through a clamping mechanism (first limit head, second limit head). The detection element (electronic observation lens) is fixed at the end of the hydraulic telescopic rod, and the surface is scanned along the axial direction of the pressure pipe by moving the observation lens.

[0005] However, the above-mentioned detection device structure has the following deficiencies when performing safety flaw detection on the outer surface of a pressure pipeline:

[0006] First, the structure that relies on the servo motor to drive the rotation of the pressure pipe body is only applicable to straight pipes and cannot be used for continuous detection of curved pipes.

[0007] Second, its transmission structure has complex structures such as motors, transmission rods, and telescopic rods, and it can only complete the inspection of disassembled pressure pipes and cannot be used for on-site surface inspection of pressure pipes.

[0008] Based on this, it can be found that in the existing technology, when inspecting the outer surface of a pressure pipeline in a transportation state, there are problems such as difficulty in inspecting the bends, cumbersome on-site inspection operations, and difficulty in implementation.

[0009] To this end, the present invention proposes a pressure pipeline medium pressure safety detection device for quickly completing position-by-position detection of the outer surface parts of straight pipes and curved pipes of the pressure pipeline, so as to better solve the problems existing in the prior art. Summary of the Invention

[0010] The present invention is to solve one of the above-mentioned technical problems, and the technical solution adopted is: a detection device for the pressure-bearing safety of the medium in a pressure pipeline includes a first restraint part and a second restraint part, the front ends of the first restraint part and the rear ends of the second restraint part are movably hinged and tightly fitted, a first pneumatic part is installed on the first restraint part, and a second pneumatic part is installed on the second restraint part.

[0011] In use, the first restraint part and the second restraint part are sleeved on the outer surface of the pressure pipe to form a circumferential restraint track. A dynamic surrounding detector is slidably engaged inside the circumferential restraint track. The first pneumatic part and the second pneumatic part are used to drive the dynamic surrounding detector to move in the circumferential direction of the pressure pipe and complete the flaw detection of its outer surface.

[0012] In any of the above schemes, preferably, the dynamic surrounding detector is sleeved on the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipeline and realizes flaw detection of the part to be detected by rotating around the circumferential constraint track.

[0013] In any of the above solutions, preferably, when the rear ends of the first restraint member and the second restraint member are in a completely separated state, the dynamic surround detector can be quickly taken out and detached from the first restraint member and the second restraint member.

[0014] In any of the above solutions, it is preferred that the dynamic surround detector has multiple detection ends and each detection end can be extended and retracted along the radial direction of the pressure pipe and pressed against the outer surface thereof as needed.

[0015] In any of the above solutions, it is preferred that the cross-sectional profile of the circumferential constraint track is T-shaped, and the dynamic surrounding detector is slidably fitted inside the circumferential constraint track.

[0016] In any of the above schemes, it is preferred that the dynamic surrounding detector includes an arc tube whose inner end is slidingly engaged with the inside of the circumferential constraint track, the outer contour of the radial section of the arc tube is T-shaped, the interior of the arc tube is hollow, and a number of gear teeth are fixedly installed at intervals along the curvature direction on the outer arc surface of the arc tube, and the side walls of each gear tooth are sealed against the corresponding inner wall of the circumferential constraint track, and the two side planes of the arc tube are sealed against the corresponding inner wall of the circumferential constraint track at their corresponding positions, and when the gear teeth are pushed by pneumatic force, they can drive the arc tube to rotate in the circumferential direction of the circumferential constraint track, and pressure-controlled air pumps connected to the interior of the arc tube are respectively installed on the outer walls of both ends of the arc tube, and detection units for detecting the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipeline are respectively installed on each detection end of the inner arc surface of the arc tube.

[0017] In any of the above schemes, it is preferred that the detection unit includes an elastic telescopic tube fixed on the detection end of the arc-shaped surface on the inner side of the arc-shaped tube, the elastic telescopic tube is arranged along the radial direction of the arc-shaped tube, and a first detection element or a second detection element is fixedly installed on the sealing end surface of the elastic telescopic tube.

[0018] In any of the above solutions, it is preferred that the elastic telescopic tube is made of a thin-walled tube made of carbon fiber material to ensure its structural strength and rebound effect.

[0019] In any of the above solutions, preferably, the first detection element adopts a wireless connection version of an ultrasonic sensor, and the second detection element adopts a wireless connection version of an eddy current sensor.

[0020] In any of the above solutions, preferably, the ultrasonic sensor and the eddy current sensor both maintain a wireless connection or a network connection with an external control terminal and transmit monitoring data in real time.

[0021] In any of the above schemes, it is preferred that the first restraint member and the second restraint member both adopt semicircular restraints with the same structure, the relative planar parts of the two semicircular restraints are butt-jointed, the front ends of the two semicircular restraints are respectively integrally formed with front extension sections, the ends of the two front extension sections are movably hinged through a rotating shaft, and the rear ends of the two semicircular restraints are respectively integrally formed with rear extension sections, and the relative surfaces of the two rear extension sections are abutted and matched.

[0022] In any of the above solutions, preferably, a gripping handle is installed at the rear end surface of each of the two rear extension sections, and the opposite surfaces of the two gripping handles are magnetically engaged by a strong magnetic block.

[0023] In any of the above schemes, it is preferred that the semicircular restraint includes a semicircular ring, and a semicircular groove is provided on the inner wall of the semicircular ring. The two ends of the semicircular groove are through-set, and the cross-sectional profile of the semicircular groove is T-shaped; the two semicircular grooves of the two semicircular restraints are symmetrically arranged and together constitute the circular circumferential restraint track, and the inner walls of the semicircular grooves are polished.

[0024] In any of the above schemes, it is preferred that the butt joint surfaces at the peripheries of the ends of the semicircular grooves at the corresponding positions of the two semicircular rings are movably sealed by sealing rings to ensure the sealing effect of the connection parts.

[0025] In any of the above schemes, it is preferred that the first pneumatic part includes two first square tubes integrally formed and fixed on the outer side walls of the corresponding semicircular rings, the internal channels of each first square tube are connected to the interior of the semicircular groove at a tangent angle, and a first air supply pump with a dual output interface is installed on the surface of the corresponding rear extension section, and the outlet end of each first air supply pump is connected to the air inlet end of the first square tube through a first air supply pipeline.

[0026] In any of the above schemes, it is preferred that the second pneumatic part includes two second square tubes integrally formed and fixed on the outer side walls of the corresponding semicircular rings, the internal channels of each second square tube are connected to the interior of the semicircular groove at a tangent angle, and a second air supply pump with a dual output interface is installed on the surface of the corresponding rear extension section, and the outlet end of each second air supply pump is connected to the air inlet end of the second square tube through a second air supply pipeline.

[0027] In the working state, the first air supply pump cooperates with the second air supply pump to supply pressurized air flow along the tangential direction of the circumferential constraint track and push the gear teeth to drive the dynamic surrounding detector to operate as needed around the circumference of the pressure pipeline to be detected.

[0028] In any of the above schemes, it is preferred that the rotational speed of the dynamic surround detector is regulated by controlling the pressure and flow rate of the supplied pressure air flow.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention realizes the rapid detection of the outer surface of the pressure pipeline. Whether it is a straight pipe section or a curved pipe section, the inspection personnel only need to use the handheld device for simple operation to quickly complete the inspection work, which greatly improves the inspection efficiency and meets the timeliness requirements of pressure pipeline inspection in different scenarios.

[0031] 2. The present invention has the function of automatically matching the outer diameter of the pressure pipe. The detection end of the dynamic surround detector can automatically expand and contract according to the outer diameter of the pressure pipe, so that the detection element can fit closely to the surface of the pressure pipe, ensuring the accuracy of the detection and effectively avoiding the detection error caused by the difference in pipe diameter.

[0032] 3. The present invention adopts a combination of ultrasonic detection and eddy current induction detection, using ultrasonic sensors and eddy current sensors to detect surface defects of pressure pipelines based on different principles. It can detect defects more comprehensively and accurately, and provide more reliable data basis for evaluating the pressure safety of pressure pipelines.

[0033] 4. The device structure of the present invention is reasonably designed. The first restraint member and the second restraint member are hinged and tightly fitted, which makes them easy to open and close and easy to install on the pressure pipe. At the same time, the dynamic surround detector can be quickly removed, which facilitates the maintenance and component replacement of the device, reduces the cost of use, and extends the service life of the device.

[0034] 5. The detection data of the present invention is transmitted to the external control terminal in real time, which makes it convenient for relevant personnel to obtain the detection results and conduct analysis and processing in a timely manner, so as to make decisions quickly and take timely measures to maintain the safety of the pressure pipeline. It is particularly suitable for scenarios with extremely high safety requirements for pressure pipelines, and ensures the stable operation of the pressure pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or components are generally identified by similar reference numerals throughout the drawings. Elements or components in the drawings are not necessarily drawn to scale.

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in an unused state.

[0037] Figure 2 It is a schematic diagram of the three-dimensional structure of the first restraining member and the second restraining member in the matching state of the present invention.

[0038] Figure 3 This is a schematic diagram of the structure of the present invention installed outside the straight pipe of the pressure pipeline.

[0039] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention installed outside the elbow of the pressure pipeline.

[0040] Figure 5 This is a schematic diagram of the structure of the present invention installed outside the elbow of the pressure pipeline.

[0041] Figure 6 for Figure 5Schematic diagram of the local internal cross-sectional structure along the AA direction.

[0042] Figure 7 It is a schematic diagram of the three-dimensional structure of the second restraint member and the dynamic surround detector installed inside the second restraint member of the present invention.

[0043] Figure 8 Schematic diagram of the three-dimensional structure of the second restraining member of the present invention.

[0044] Figure 9 for Figure 7 Schematic diagram of the main structure.

[0045] Figure 10 It is a schematic structural diagram of the second restraining member of the present invention and the dynamic surround detector in a separated state.

[0046] Figure 11 Schematic diagram of the three-dimensional structure of the dynamic surround detector of the present invention from a first viewing angle.

[0047] Figure 12 Schematic diagram of the three-dimensional structure of the dynamic surround detector of the present invention from a second viewing angle.

[0048] In the figure, 1. dynamic surround detector; 2. circular constraint track; 3. gripping handle; 4. strong magnetic block; 5. front extension section; 6. rotating shaft; 7. rear extension section; 8. semicircular ring; 9. semicircular groove; 10. eddy current sensor; 11. first square tube; 12. first air supply pump; 13. first air supply pipeline; 14. second square tube; 15. second air supply pump; 16. second air supply pipeline; 17. gear gear; 18. arc tube; 19. pressure control air pump; 20. elastic telescopic tube; 21. ultrasonic sensor; 22. pressure pipeline. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only used as examples and are not intended to limit the scope of protection of the present invention. Figures 1-12 As shown in .

[0050] Example 1: A device for detecting the pressure safety of a medium in a pressure pipeline includes a first restraint member and a second restraint member. The front ends of the first restraint member and the second restraint member are movably hinged and tightly fitted at the rear ends. A first pneumatic member is installed on the first restraint member, and a second pneumatic member is installed on the second restraint member.

[0051] The first and second restraining members are connected by a hinged front end and a tight fit at the rear end, allowing them to move relative to each other. This hinged front end and tight fit connection allows the first and second restraining members to be flexibly opened and closed, facilitating attachment of the device to the pressure pipe 22 and enhancing its adaptability.

[0052] In use, the first restraint member and the second restraint member are sleeved on the outer surface of the pressure pipe 22 to form a circumferential restraint track 2, and a dynamic surrounding detector 1 is slidably fitted inside the circumferential restraint track 2. The first pneumatic member and the second pneumatic member are used to drive the dynamic surrounding detector 1 to move in the circumferential direction of the pressure pipe 22 and complete the flaw detection of its outer surface.

[0053] When in use, the detection device of the present invention can quickly detect the outer surface of the pressure pipe 22 in the installed and used state. During the detection, the detection device can be quickly held by hand to detect the straight pipe section or the curved pipe section of the pressure pipe 22. The detection operation is relatively convenient when in use. The operator only needs to hold the gripping handle 3 at the rear end of the first and second restraint parts of the device, and then make the first and second restraint parts relatively open through pre-adjustment, and clamp the entire device on the periphery of the pressure pipe 22. The circular restraint track 2 formed in the middle of the first and second restraint parts is used for positioning. Then, by operating the corresponding switch, the internal air pressure of the current dynamic surround detector 1 can be adjusted, so that the various detection ends of the dynamic surround detector 1 can be automatically matched according to the outer diameter of the current pressure pipe 22. After matching, the first detection element and the second detection element of each detection end are respectively abutted against the outer surface of the pressure pipe 22 and ultrasonic detection and eddy current induction detection are performed on the defects on its surface. The detection results will be uploaded to the external control terminal in real time for collection, recording and analysis.

[0054] In some emergency detection scenarios that require a quick response, such as when a suspected leak occurs in the pressure pipeline 22, the inspection personnel can quickly use this device to conduct inspections, and the inspection data can be uploaded to the control terminal in real time, so that relevant personnel can make decisions quickly and take timely measures to reduce the risk of accidents.

[0055] During testing at each position, the corresponding first and second air supply pumps 12, 15 on the first and second pneumatic components are activated as needed. Once activated, the first and second air supply pumps 12, 15 continuously supply pressurized air to the first and second square tubes 11, 14. This pneumatic push continuously propels the shift gears 17 located between the circumferential constraint track 2 and the arc-shaped tube 18 of the current dynamic surround detector 1, causing them to continuously move around the circumference. During this movement, the two first and second square tubes 11, 14 simultaneously achieve pneumatic propulsion at four points, ultimately enabling the dynamic surround detector 1 to operate continuously. This operation drives the ultrasonic sensors 21 and eddy current sensors 10 mounted thereon to detect surface defects in the pressure pipe 22 in real time. After completing a full circle of testing on the outer surface of the pressure pipe 22 at the current position, the operator moves the device an appropriate distance along its extension direction and repeats the above operation to continue testing for surface defects. The interval between two adjacent testing positions is determined as needed based on the required accuracy and density of the test.

[0056] Pneumatic propulsion at four points ensures the stability and continuity of the dynamic surround detector 1's operation, improving detection reliability. Furthermore, the spacing can be adjusted as needed, increasing detection flexibility. This ensures continuous operation and stable detection of the dynamic surround detector 1, as well as flexible adjustment of the detection position, ensuring comprehensive and accurate detection of the outer surface of the pressure pipe 22.

[0057] This enables continuous operation and stable detection of the dynamic surround detector 1, as well as flexible adjustment of the detection position, ensuring comprehensive and accurate detection of the outer surface of the pressure pipe 22. When inspecting special pressure pipes that require extremely high speed and accuracy, such as those used in the aerospace industry, the detection interval and the operating speed of the dynamic surround detector 1 can be precisely adjusted to meet the specific requirements of the pressure pipes, achieving high-precision detection of tiny defects on the pressure pipe surface and meeting the inspection needs of specialized industries.

[0058] In any of the above schemes, it is preferred that the dynamic surrounding detector 1 is sleeved on the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipe 22 and realizes flaw detection of the part to be detected by rotating around the circumferential constraint track 2.

[0059] The circumferential constraint track 2 and the dynamic surrounding detector 1 cooperate with each other to realize the automatic flaw detection function of the outer surface of the pressure pipe 22, and are the core function realization part of the detection device.

[0060] It can adapt to the detection of pipe sections of different shapes of the pressure pipeline 22, expand the application range of the detection device, and improve the practicality of the device. This is different from the traditional detection device that is only suitable for straight pipe detection. The overall detection range of this device is wider.

[0061] When inspecting some pressure piping systems with complex spatial layouts, the dynamic surround detector 1 can flexibly switch between straight pipe sections and curved pipe sections for inspection. Inspectors do not need to frequently change inspection equipment or adjust inspection methods, which improves inspection efficiency and reduces inspection costs.

[0062] In any of the above solutions, it is preferred that when the rear ends of the first restraint member and the second restraint member are in a completely separated state, the dynamic surround detector 1 can be quickly taken out and detached from the first restraint member and the second restraint member.

[0063] When the rear ends of the first and second restraining members are completely separated, the restraints on the dynamic surround detector 1 are released, allowing it to be quickly removed from both, facilitating maintenance and component replacement of the device. This facilitates independent maintenance, inspection, or replacement of the dynamic surround detector 1, reducing the maintenance difficulty and cost of the device and improving its maintainability.

[0064] In some scenarios where detection components need to be quickly replaced to adapt to different detection tasks, such as when switching from detecting ordinary pressure pipes to detecting pressure pipes 22 with special coatings, the dynamic surround detector 1 can be quickly removed, replaced with an adapted dynamic surround detector 1, and then quickly reinstalled and put into use, thereby improving the versatility and response speed of the detection device.

[0065] In any of the above solutions, it is preferred that the dynamic surround detector 1 has multiple detection ends and each detection end can be extended and retracted along the radial direction of the pressure pipe 22 and pressed against its outer surface as needed.

[0066] This design ensures close contact between the detection element and the outer surface of the pressure pipe 22, enabling effective testing of pressure pipes 22 of varying diameters and enhancing detection results. When testing pressure pipes 22 with soft or easily deformable surfaces, the retractable and abutting function of the detection end maintains good contact without damaging the surface of the pressure pipe 22, enabling accurate detection data while preventing secondary damage to the pressure pipe 22.

[0067] In any of the above schemes, it is preferred that the cross-sectional profile of the circumferential constraint track 2 is T-shaped, and the dynamic surround detector 1 is slidably fitted inside the circumferential constraint track 2 .

[0068] Ensuring stable circumferential motion of the dynamic surround detector 1 is crucial for achieving accurate flaw detection. The T-shaped circumferential constraint track 2 provides a stable sliding path for the dynamic surround detector 1. Its unique shape restricts the detector's motion, confining it to a circumferential path within the track. This T-shaped structure increases the contact area and stability between the track and the dynamic surround detector 1, preventing the detector 1 from shifting or shaking during movement, thereby improving detection accuracy and reliability.

[0069] In any of the above schemes, it is preferred that the dynamic surround detector 1 includes an arc tube 18 whose inner end is slidably engaged with the inside of the circumferential constraint track 2, the outer contour of the radial section of the arc tube 18 is T-shaped, the inside of the arc tube 18 is hollow, and a plurality of gear teeth 17 are fixedly installed at intervals along the arc direction on the outer arc surface of the arc tube 18, and the side walls of each gear tooth 17 are sealed against the corresponding inner wall of the circumferential constraint track 2. The two side planes are sealed against the corresponding inner walls of the circumferential constraint track 2 at their corresponding positions. When the shift tooth 17 is pushed by pneumatic force, it can drive the arc tube 18 to rotate in the circumferential direction of the circumferential constraint track 2. Pressure-controlled air pumps 19 connected to the interior of the arc tube 18 are respectively installed on the outer walls at both ends of the arc tube 18, and detection units for detecting the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipe 22 are respectively installed at each detection end of the arc surface on the inner side of the arc tube 18.

[0070] The arc tube 18 slides with the circumferential constraint track 2 through a T-shaped structure. The shift gear 17 pneumatically propels the arc tube 18 around the circumferential constraint track 2. The pressure-controlled air pump 19 regulates the air pressure inside the arc tube 18, providing power for the expansion and contraction of the detection end, thereby inspecting the surface of the pressure pipe 22.

[0071] In any of the above schemes, it is preferred that the detection unit includes an elastic telescopic tube 20 fixed to the detection end of the arc surface on the inner side of the arc tube 18, and the elastic telescopic tube 20 is arranged along the radial direction of the arc tube 18, and a first detection element or a second detection element is fixedly installed on the sealing end surface of the elastic telescopic tube 20.

[0072] Achieving adaptive contact between the detection element and the surface of the pressure pipe 22 and ensuring the reliability of test data are crucial for achieving the detection function. The elastic expansion tube 20 expands and contracts radially along the curved tube 18 in response to changes in the outer diameter of the pressure pipe 22, driving the first detection element (the wireless ultrasonic sensor 21) or the second detection element (the wireless eddy current sensor 10) toward or away from the outer surface of the pressure pipe 22, enabling detection of pressure pipes 22 of varying diameters. This design of the elastic expansion tube 20 enables the detection unit to flexibly adapt to changes in the outer diameter of the pressure pipe 22, ensuring good contact between the detection element and the surface of the pressure pipe 22 and improving detection accuracy.

[0073] When inspecting some pressure pipes 22 with special surface structures, such as pressure pipes 22 with corrugated surfaces, the elastic telescopic tube 20 can adapt to the undulations of the surface of the pressure pipe 22 to a certain extent, so that the first detection element and the second detection element always maintain effective contact with the surface of the pressure pipe 22, thereby obtaining accurate detection data.

[0074] In any of the above solutions, it is preferred that the elastic telescopic tube 20 is made of a thin-walled tube made of carbon fiber material to ensure its structural strength and rebound effect.

[0075] The thin-walled tube made of carbon fiber material has high structural strength and good rebound effect. After being subjected to external force (such as expansion and contraction caused by changes in the outer diameter of the pressure pipe 22), it can maintain its own structural stability and return to its original state, thereby ensuring the normal operation of the first detection element and the second detection element.

[0076] In any of the above solutions, it is preferred that the first detection element adopts a wireless connection version of the ultrasonic sensor 21, and the second detection element adopts a wireless connection version of the eddy current sensor 10.

[0077] The wireless connection version of the ultrasonic sensor 21 uses the ultrasonic reflection principle to detect surface defects of the pressure pipe 22, and the wireless connection version of the eddy current sensor 10 uses the electromagnetic induction principle to detect surface defects of the pressure pipe 22. The detection data is uploaded to the external control terminal in real time via wireless transmission.

[0078] In any of the above solutions, preferably, the ultrasonic sensor 21 and the eddy current sensor 10 maintain a wireless connection or a network connection with an external control terminal and transmit monitoring data in real time.

[0079] Real-time data transmission ensures the timeliness of the test results, making it easier for relevant personnel to understand the status of the pressure pipeline 22 in a timely manner and make decisions. Wireless or network connection methods improve the flexibility and convenience of data transmission.

[0080] In any of the above schemes, it is preferred that the first restraint member and the second restraint member both adopt semicircular restraints with the same structure, the relative planar parts of the two semicircular restraints are butt-jointed, the front ends of the two semicircular restraints are respectively integrally formed with front extension sections 5, the ends of the two front extension sections 5 are movably hinged through a rotating shaft 6, and the rear ends of the two semicircular restraints are respectively integrally formed with rear extension sections 7, and the relative surfaces of the two rear extension sections 7 are abutted and matched.

[0081] The two semicircular restrainers with the same structure are movably hinged by the rotating shaft 6 at the front end and abutted at the rear end to form a first restraining member and a second restraining member that can be opened and closed, so that the device can be easily sleeved on the pressure pipe 22.

[0082] When inspecting the pressure pipe 22 in some narrow spaces, the semicircular restraints can be placed in the narrow space separately and then assembled on the pressure pipe 22, avoiding the problem of being unable to install the inspection device due to space limitations and improving the applicability of the inspection device in special environments.

[0083] In any of the above solutions, preferably, a gripping handle 3 is installed at the rear end surface of each of the two rear extension sections 7 , and the opposite surfaces of the two gripping handles 3 are magnetically engaged through a strong magnetic block 4 .

[0084] The gripping handles 3 are convenient for the inspector to hold the device in hand, and the strong magnetic block 4 is magnetically coupled so that the two gripping handles 3 can fit tightly together when not in use, making it easy to store and carry the device.

[0085] During the inspection process, if the device needs to be temporarily fixed, such as when the inspector adjusts the inspection parameters, the strong magnetic block 4 can temporarily attach the device to a nearby metal object, maintaining its stability and preventing the impact of hand-held shaking on inspection accuracy. It also reduces the burden of long-term hand-held operation on the inspector. In some high-altitude operations or in small spaces where it is difficult to place the inspection device, this magnetic fixing method allows inspectors to complete inspection tasks more efficiently, improving work efficiency and safety.

[0086] Example 2: Compared with Example 1, this example is different in that it also includes the following technical features:

[0087] In any of the above schemes, it is preferred that the semicircular restraint includes a semicircular ring 8, and a semicircular groove 9 is provided on the inner wall of the semicircular ring 8. The two ends of the semicircular groove 9 are through-set, and the cross-sectional profile of the semicircular groove 9 is T-shaped; the two semicircular grooves 9 of the two semicircular restraints are symmetrically arranged and together constitute the circular circumferential restraint track 2, and the inner walls of the semicircular grooves 9 are polished.

[0088] The semicircular groove 9 on the semicircular ring 8 mates with the semicircular groove 9 on the other semicircular constraint to form a circumferential constraint track 2. The T-shaped cross-sectional profile mates with the dynamic surround detector 1, ensuring stable sliding. The polishing process reduces friction, making the dynamic surround detector 1 move more smoothly. The entire structure provides a stable motion track for the dynamic surround detector 1, reducing motion resistance and ensuring a smooth detection process.

[0089] When inspecting some high-end pressure pipelines 22 that require extremely high detection accuracy and extremely small allowable errors, such as ultra-precision gas transmission pressure pipelines 22 in semiconductor manufacturing equipment, the polished T-shaped semicircular groove 9 can minimize the jitter and friction loss during the dynamic movement of the surrounding detector 1, ensuring the high accuracy of the detection data and avoiding misjudgment of the condition of the pressure pipeline 22 due to detection errors.

[0090] In any of the above solutions, it is preferred that the butt joint surfaces at the peripheries of the ends of the semicircular grooves 9 at the corresponding positions of the two semicircular rings 8 are movably sealed by sealing rings to ensure the sealing effect of the connection parts.

[0091] The air pressure in the circular constraint track 2 is ensured to be stable, so that the dynamic surrounding detector 1 can continue to operate under stable power, thereby improving the detection accuracy.

[0092] In any of the above schemes, it is preferred that the first pneumatic part includes two first square tubes 11 integrally formed and fixed on the outer wall of the corresponding semicircular ring 8, and the internal channel of each first square tube 11 is connected to the interior of the semicircular groove 9 at a tangent angle, and a first air supply pump 12 with a dual output interface is installed on the surface of the corresponding rear extension section 7, and the outlet end of each first air supply pump 12 is connected to the air inlet end of the first square tube 11 through the first air supply pipeline 13.

[0093] The design of the first square tube 11 being tangentially connected to the semicircular groove 9 and the configuration of the first air supply pump 12 enable the pressurized airflow to be efficiently converted into the driving force of the dynamic surround detector 1, thereby improving the driving efficiency and ensuring the stability of the detection process.

[0094] In any of the above schemes, it is preferred that the second pneumatic part includes two second square tubes 14 integrally formed and fixed on the outer wall of the corresponding semicircular ring 8, and the internal channel of each second square tube 14 is connected to the interior of the semicircular groove 9 at a tangent angle, and a second air supply pump 15 with a dual output interface is installed on the surface of the corresponding rear extension section 7, and the outlet end of each second air supply pump 15 is connected to the air inlet end of the second square tube 14 through a second air supply pipeline 16.

[0095] The second pneumatic component cooperates with the first pneumatic component to provide driving force from different directions, so that the operation of the dynamic surround detector 1 is more stable, and the accuracy and stability of the detection are further improved.

[0096] The first air supply pump 12 and the second air supply pump 15 work together to provide a more stable and powerful driving force, ensuring that the dynamic surround detector 1 can operate stably as required, thereby improving the reliability and efficiency of detection.

[0097] In the working state, the first air supply pump 12 cooperates with the second air supply pump 15 to supply pressurized air flow along the tangential direction of the circumferential constraint track 2 and push the gear tooth 17 to drive the dynamic surrounding detector 1 to operate as needed around the circumference of the pressure pipe 22 to be detected.

[0098] When inspecting some large-diameter, long-distance pressure pipes 22, a strong and stable driving force can ensure that the dynamic surround detector 1 can continue to operate for a long time without the need for frequent equipment adjustments.

[0099] In any of the above solutions, it is preferred that the rotational speed of the dynamic surround detector 1 is regulated by controlling the pressure and flow rate of the supplied pressurized air flow.

[0100] By changing the pressure and flow rate of the pressurized air flow supplied by the first air supply pump 12 and the second air supply pump 15 , the pressure change will affect the thrust on the shift gear 17 , thereby changing the rotation speed of the dynamic surround detector 1 .

[0101] When inspecting areas with dense localized defects, the speed of the dynamic surround detector 1 can be reduced, allowing the detection element more time to carefully inspect the area and obtain more detailed defect information. When inspecting large areas without obvious defects, the speed can be increased to quickly complete the inspection and improve inspection efficiency. This flexible speed control method can greatly improve the targetedness and effectiveness of inspections, playing a vital role in complex pressure pipeline inspection scenarios.

[0102] The working process of this pressure pipeline medium pressure safety detection device is as follows:

[0103] Device installation and preparation: The inspector holds the gripping handle 3 at the rear end of the first restraint member and the second restraint member, separates the rear end of the first restraint member from the rear end of the second restraint member, and opens the two relative to each other.

[0104] The entire device is clamped onto the periphery of the pressure pipe 22, and positioned by means of a circumferential constraint track 2 formed in the middle of the first and second constraint members. The first and second constraint members are hinged at their front ends and tightly fitted at their rear ends, positioned together on the outer surface of the pressure pipe 22. The semicircular grooves 9 of the two semicircular constraint members mate to form the circumferential constraint track 2, and a sealing ring at the interface ensures a tight seal at the connection.

[0105] Operate the corresponding switch to adjust the air pressure inside the dynamic surround detector 1. The dynamic surround detector 1 has multiple detection ends. The elastic expansion tube 20 at each detection end expands and contracts along the radial direction of the pressure pipe 22 according to the outer diameter of the pressure pipe 22. This allows the first detection element (the ultrasonic sensor 21 in the wireless connection version) and the second detection element (the eddy current sensor 10 in the wireless connection version) mounted on the blocked end surface of the elastic expansion tube 20 to press against the outer surface of the pressure pipe 22 as needed, achieving automatic matching of the detection end with the outer diameter of the pressure pipe 22.

[0106] The first air supply pump 12 on the first pneumatic component and the second air supply pump 15 on the second pneumatic component are controlled to start as needed.

[0107] The first air supply pump 12 supplies air to the first square tube 11 through the first air supply pipeline 13, and the second air supply pump 15 supplies air to the second square tube 14 through the second air supply pipeline 16. Because the internal channels of the first square tube 11 and the second square tube 14 are both tangentially connected to the interior of the semicircular groove 9, the pressurized airflow enters along the tangent direction of the circumferential constraint track 2, pushing the gear teeth 17 located between the circumferential constraint track 2 and the arc tube 18 of the dynamic surround detector 1 to move in a circular motion.

[0108] The two first square tubes 11 and the two second square tubes 14 are used to realize pneumatic propulsion at four points simultaneously, and finally drive the arc tube 18 that dynamically surrounds the detector 1 to continuously operate around the circumferential constraint track 2 .

[0109] During the operation of the dynamic surround detector 1, the detection units installed at each detection end of the inner curved surface of the arc tube 18 begin to operate. The first detection element (ultrasonic sensor 21) uses the principle of ultrasonic reflection, and the second detection element (eddy current sensor 10) uses the principle of electromagnetic induction to perform flaw detection on the circumferential outer surface of the straight or curved sections of the pressure pipe 22. The detection data is uploaded to an external control terminal in real time via wireless or network connection for collection, recording, and analysis.

[0110] After inspecting the outer surface of the pressure pipe 22 at the current location, the operator moves the device along its extension by an appropriate interval. This interval is determined based on the required inspection accuracy and density. The operator then repeats the above operation to inspect the next location for surface defects until the entire outer surface of the pressure pipe 22 is inspected.

[0111] After the test is complete, if the dynamic surround detector 1 requires maintenance, repair, or component replacement, the first and second restraining members can be completely separated at their rear ends. The dynamic surround detector 1 can then be quickly removed and detached from the first and second restraining members. Furthermore, the strong magnetic blocks 4 on the gripping handles 3 provide a secure fit when the device is not in use, allowing the two gripping handles 3 to be securely attached for easy storage and portability.

[0112] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the scope of protection of the present invention.

[0113] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A device for detecting the pressure safety of a pressure pipeline medium, characterized by: The detection device includes a first restraining member and a second restraining member, wherein the front ends of the first restraining member and the second restraining member are movably hinged and tightly fitted at the rear ends, a first pneumatic member is mounted on the first restraining member, and a second pneumatic member is mounted on the second restraining member; In use, the first restraining member and the second restraining member are sleeved on the outer surface of the pressure pipe to form a circumferential restraining track. A dynamic surrounding detector is slidably engaged within the circumferential restraining track. The first pneumatic member and the second pneumatic member cooperate to drive the dynamic surrounding detector to move in a circumferential direction around the pressure pipe and perform flaw detection on its outer surface. The dynamic surrounding detector includes an arc tube whose inner end is slidably engaged with the inside of the circumferential constraint track, the outer contour of the radial section of the arc tube adopts a T-shape, the interior of the arc tube is hollow, and a plurality of gear teeth are fixedly installed at intervals along the curvature direction on the outer arc surface of the arc tube, and the side walls of each gear tooth are sealed against the corresponding inner wall of the circumferential constraint track, and the two side planes of the arc tube are sealed against the corresponding inner wall of the circumferential constraint track at their corresponding positions, and when the gear teeth are pushed by pneumatic force, the arc tube is driven to rotate in the circumferential direction of the circumferential constraint track, and pressure-controlled air pumps connected to the interior of the arc tube are respectively installed at the outer walls of both ends of the arc tube, and detection units for detecting the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipeline are respectively installed at each detection end of the arc surface inside the arc tube; The detection unit includes an elastic telescopic tube fixed to the detection end of the inner arc surface of the arc tube. The elastic telescopic tube is arranged along the radial direction of the arc tube. A first detection element or a second detection element is fixedly installed on the blocking end surface of the elastic telescopic tube.

2. A device for detecting the pressure safety of a medium in a pressure pipeline according to claim 1, characterized in that: The dynamic surrounding detector is sleeved on the circumferential outer surface of the straight pipe section or the curved pipe section of the pressure pipeline and realizes flaw detection on the part to be detected by rotating around the circumferential constraint track.

3. A device for detecting the pressure safety of a medium in a pressure pipeline according to claim 2, characterized in that: When the rear ends of the first restraint member and the second restraint member are in a completely separated state, the dynamic surround detector can be quickly taken out and separated from the first restraint member and the second restraint member.

4. A device for detecting the pressure safety of a medium in a pressure pipeline according to claim 3, characterized in that: The dynamic surround detector has multiple detection ends, and each detection end can be stretched and retracted along the radial direction of the pressure pipe and pressed against the outer surface of the pressure pipe as needed.

5. The device for detecting the pressure safety of a medium in a pressure pipeline according to claim 4, characterized in that: The cross-sectional profile of the circumferential constraint track is T-shaped, and the dynamic surrounding detector is slidably fitted inside the circumferential constraint track.

6. A device for detecting the pressure safety of a medium in a pressure pipeline according to claim 5, characterized in that: The first restraint member and the second restraint member both adopt semicircular restraints with the same structure. The relative planar parts of the two semicircular restraints are butt-jointed. The front ends of the two semicircular restraints are respectively integrally formed with front extension sections. The ends of the two front extension sections are movably hinged through a rotating shaft. The rear ends of the two semicircular restraints are respectively integrally formed with rear extension sections. The relative surfaces of the two rear extension sections are butt-jointed.

7. A device for detecting the pressure safety of a medium in a pressure pipeline according to claim 6, characterized in that: A gripping handle is installed at the rear end surface of the two rear extension sections, and the opposite surfaces of the two gripping handles are magnetically matched through a strong magnetic block.

8. The device for detecting the pressure safety of a medium in a pressure pipeline according to claim 7, characterized in that: The semicircular restraint includes a semicircular ring, and a semicircular groove is provided on the inner wall of the semicircular ring. The two ends of the semicircular groove are through-set, and the cross-sectional profile of the semicircular groove is T-shaped; the two semicircular grooves of the two semicircular restraints are symmetrically arranged and together form the circular circumferential restraint track, and the inner walls of the semicircular grooves are polished.

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