Petrochemical engineering mechanical pipeline strength detection device

Abstract

The invention discloses a petrochemical mechanical pipeline strength detection device, and relates to the technical field of mechanical pipeline strength detection.The petrochemical mechanical pipeline strength detection device comprises a base, a supporting frame is fixedly mounted at the top of the base, a top plate is fixedly mounted at the top of the supporting frame, an electric push rod is fixedly mounted at the top of the top plate, and an inner rod is slidably mounted on the inner wall of the electric push rod; a fixing arc plate is fixedly mounted at the bottom of the inner rod, a rebound plate is fixedly mounted at the bottom of the fixing arc plate, a supporting seat is fixedly mounted at the top of the base, a fixing device is further arranged at the top of the base, and a scraper rotates to grind the interior of the pipeline and grind the inner surface of the pipeline, so that a detection air bag can be better attached to the inner wall of the pipeline; the inner wall of the pipeline is polished to remove dirt, scale, corrosion, oxide and other sediments on the inner surface of the pipeline, and the situation that the impurities possibly affect the sealing performance of the detection air bag or cause uneven local pressure, and consequently the detection result is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical pipeline strength detection, and specifically relates to a device for detecting the strength of petrochemical mechanical pipelines. Background Technique

[0002] In order to ensure construction safety and reliable operation, various types of inspections need to be carried out on such pipelines before using petrochemical mechanical pipelines, including the inspection of pipeline strength.

[0003] The patent with the patent announcement number CN220339857U relates to the technical field of mechanical pipeline strength detection, including a base and columns. Columns are fixedly installed at the four corners on the upper surface of the base. A baffle is fixedly installed on the upper surface of the columns. A telescopic device is fixedly installed on the upper surface of the baffle. A platen-type sensor is fixedly installed at the telescopic end of the telescopic device and below the baffle. An arc plate is fixedly installed on the upper surface of the base. A scraper is movably installed on the inner surface of the arc plate. For the device for detecting the strength of petrochemical mechanical pipelines described in this patent, when foreign objects appear on the arc plate, after the pipeline detection is completed, the scraper can scrape the foreign objects on the arc plate into the second discharge port, so that manual cleaning is not required and the use of the detection device is not affected. When the pipeline is placed again, the scraper will be pushed by the pipeline, thereby cleaning the arc plate again, which can ensure the cleaning effect of the arc plate.

[0004] When the above patent places the pipeline again, the scraper will be pushed by the pipeline, thereby cleaning the arc plate again, which can ensure the cleaning effect of the arc plate. However, when the detection airbag is placed in the pipeline for detection, there may be dirt, scale, rust, oxides and other deposits inside the pipeline. These impurities may affect the sealing performance of the detection airbag or cause uneven local pressure, thereby affecting the detection results. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a device for detecting the strength of petrochemical mechanical pipelines, which solves the problems raised in the above background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A device for detecting the strength of petrochemical mechanical pipelines, including a base, a support frame is fixedly installed at the top of the base, a top plate is fixedly installed at the top of the support frame, an electric push rod is fixedly installed at the top of the top plate, an inner rod is slidably installed inside the electric push rod, a fixed arc plate is fixedly installed at the bottom of the inner rod, a resilient plate is fixedly installed at the bottom of the fixed arc plate, a support seat is fixedly installed at the top of the base, and a fixing device is further provided at the top of the base; The fixing device includes a sliding frame, a threaded rod, a sliding push plate, a detection airbag, a scraping plate and an inclined panel. The sliding frame is slidably installed on the inner wall of the base. The threaded rod is rotatably installed on one side of the sliding frame close to the support seat. The sliding push plate is threadedly connected to the threaded rod. The detection airbag is fixedly installed on the circumferential surface of the threaded rod. The scraping plate is slidably installed on the inner wall of the threaded rod. The inclined panel is rotatably installed on one side of the scraping plate close to the support seat.

[0007] According to the above technical solution, the fixing device further includes a sliding rod, a sliding key and a fixing clamp. The sliding rod is slidably installed on the top of the base. The sliding key is slidably installed on the top of the base. The fixing clamp is rotatably installed on the top of the base. Grinding the inner wall of the pipeline can remove dirt, scale, rust, oxides and other deposits on the inner surface of the pipeline, which is very important for ensuring the accuracy of detection. Avoiding these impurities may affect the sealing performance of the detection airbag or cause uneven local pressure, thus affecting the detection result.

[0008] According to the above technical solution, a first spring is provided between the fixed arc plate and the rebound plate. The first spring is provided to drive the rebound plate back to its original position. A second spring is provided between the scraping plate and the threaded rod. The second spring is provided to drive the scraping plate back to its original position. A third spring is provided between the sliding rod and the base. The third spring is provided to drive the sliding rod back to its original position. One side of the sliding rod close to the fixing clamp is set as an inclined surface. One side of the sliding rod close to the sliding push plate is set as an inclined surface. A fourth spring is provided between the inner rod and the electric push rod. The fourth spring is provided to drive the inner rod to slide into the electric push rod. A first torsion spring is provided between the fixing clamp and the base. The first torsion spring is provided to drive the fixing clamp to rotate for fixing.

[0009] According to the above technical solution, a monitoring device for detecting pipeline expansion and a protection device for protecting the detection device are further provided on the top of the base. The monitoring device includes a fixing plate, a vertical rod, a sliding pressure rod, a pulling plate, a fixing rod, an inner plate, a push rod, a fixing frame and a plug rod. The fixing plate is fixedly installed on one side of the fixing clamp away from the support seat. The vertical rod is slidably installed on one side of the support frame close to the fixing plate. The sliding pressure rod is slidably installed at the bottom of the top plate. The pulling plate is slidably installed at the bottom of the top plate. The fixing rod is fixedly installed at the bottom of the top plate. The inner plate is slidably installed on the inner wall of the fixing rod. The push rod is fixedly installed on the top of the rebound plate. The push rod slidably penetrates through the fixed arc plate. The fixing frame is slidably installed on the circumferential surface of the electric push rod. A sliding groove is formed at the top of the fixing frame. The plug rod is slidably installed on the inner wall of the sliding groove. Before the pipeline is fixed, the rebound plate and the fixed arc plate are limited, because the rebound amplitude is directly related to the pipeline expansion degree. Unfixed pipeline may cause the rebound data to be distorted, thus affecting the accuracy of the detection result and causing the protection device to be set in advance, which affects the detection result.

[0010] According to the above technical solution, one side of the sliding pressure rod close to the vertical rod is set as an inclined plane. The sliding pressure rod is provided with the inclined plane to facilitate the vertical rod to push the sliding pressure rod to move. One side of the sliding pressure rod close to the pull plate is set as an inclined plane. The sliding pressure rod is provided with the inclined plane to facilitate the pull plate to push the sliding pressure rod to move. A fifth spring is arranged between the pull plate and the top plate. The fifth spring is provided to drive the pull plate back to its original position. A fixed block is arranged on one side of the inner plate close to the fixed arc plate. Fixing holes are respectively formed on one side of the fixed arc plate and the rebound plate close to the inner plate. The fixed block is in contact with the inner wall of the fixing hole. One side of the push rod close to the fixed frame is set as an inclined plane. The push rod is provided with the inclined plane to facilitate the push rod to push the plug rod to move. The plug rod slidably penetrates through the electric push rod. A square groove is formed on one side of the inner rod close to the plug rod. The plug rod is in contact with the inner wall of the square groove.

[0011] According to the above technical solution, the protection device includes a connecting rod, a fixed key, a rotating rod, a protection plate and a controller. The fixed key is slidably installed at the bottom of the top plate. One end of the connecting rod is rotatably installed at the top of the fixed frame. The other end of the connecting rod is rotatably installed at the bottom of the fixed key. The rotating rod is rotatably installed at the bottom of the top plate. The protection plate is fixedly installed at one end of the rotating rod away from the electric push rod. The controller is fixedly installed at the bottom of the top plate. The control end of the controller is electrically connected to the detection airbag. When the fixed arc plate moves, it will drive the rebound plate to move. When the rebound plate moves away from the pipeline and the elastic telescopic plate of the pipeline moves away from the pipeline, it can be used as a warning signal to remind the detection personnel that the pressure of the current pipeline is close to the dangerous limit, and then adjust the detection method or stop further pressure application. This helps to improve the safety of the detection process, avoid unnecessary risks to the pipeline and related equipment, and at the same time can also protect the rebound plate from being damaged by the pipeline rupture.

[0012] According to the above technical solution, the protection device further includes an elastic telescopic rod, a telescopic key, a sliding plate, a push plate and an arc plate. The elastic telescopic rod is fixedly installed on one side of the protection plate away from the electric push rod. The arc plate is fixedly installed on one side of the elastic telescopic rod away from the protection plate. The telescopic key is slidably installed on the inner wall of the movable rod of the elastic telescopic rod. The telescopic key slidably penetrates through the inner wall of the fixed outer rod of the elastic telescopic rod. The sliding plate is slidably installed on the inner wall of the protection plate. A chute is formed on one side of the protection plate close to the elastic telescopic rod. The push plate is fixedly installed on one side of the sliding plate close to the telescopic key. The push plate is in contact with the inner wall of the chute. When the movable end of the elastic telescopic rod moves, it will push the arc plate to contact the pipeline to protect the detection device. In this way, even if the pipeline expands or bursts accidentally, the arc plate can play a certain buffering role to prevent the detection equipment from being directly impacted and avoid damage to the detection device caused by the expansion or burst of the pipeline.

[0013] According to the above technical solution, a No. 2 torsion spring is provided between the rotating rod and the top plate, and the No. 2 torsion spring is provided to drive the rotating rod to rotate. A No. 6 spring is provided between the fixed key and the top plate, and the No. 6 spring is provided to drive the fixed key back to its original position. A No. 7 spring is provided between the sliding plate and the protective plate, and the No. 7 spring is provided to drive the sliding plate back to its original position. The fixed key slides through the outer wall of the rotating rod.

[0014] The present invention provides a petrochemical mechanical pipeline strength detection device, which has the following beneficial effects: (1) In this invention, the rotation of the threaded rod drives the scraper to rotate, and the rotation of the scraper grinds the inside of the pipe. Grinding the inner surface of the pipe allows the detection airbag to better fit the inner wall of the pipe. Grinding the inner wall of the pipe can remove dirt, scale, rust, oxides and other deposits on the inner surface of the pipe. This is very important for ensuring the accuracy of the detection, and avoiding these impurities that may affect the sealing of the detection airbag or cause local uneven pressure, thereby affecting the detection results.

[0015] (2) In the present invention, the movement of the inner plate will drive the fixed block to move away from the rebound plate, and the limit between the rebound plate and the fixed arc plate will be released. Then, when the pipeline expands, the rebound plate will move in the direction of the fixed arc plate. The rebound plate and the fixed arc plate are limited before the pipeline is fixed. Because the amplitude of the rebound is directly related to the degree of expansion of the pipeline, the unfixed pipeline may cause the rebound data to be distorted, which in turn affects the accuracy of the test results and causes the protective device to be installed in advance, which affects the test results.

[0016] (3) In this invention, the movement of the inner rod will drive the movement of the fixed arc plate, and the movement of the fixed arc plate will drive the movement of the rebound plate. When the rebound plate moves away from the pipeline and the elastic expansion plate moves away from the pipeline, it can serve as a warning signal to remind the inspection personnel that the current pipeline pressure is approaching the dangerous limit, and then adjust the inspection method or stop further pressure application. This helps to improve the safety of the inspection process and avoid unnecessary risks to the pipeline and related equipment. At the same time, it can also protect the rebound plate and prevent damage to the rebound plate caused by pipeline rupture.

[0017] (4) In this invention, the sliding of the slide plate will drive the push plate to move. The movement of the push plate will push the telescopic key to slide toward the inside of the elastic telescopic rod, and the limit of the elastic telescopic rod will be released. The movable end of the elastic telescopic rod will move away from the protection plate. The movement of the movable end of the elastic telescopic rod will push the arc plate to contact the pipeline to protect the detection device. In this way, even if the pipeline expands or bursts unexpectedly, the arc plate can play a certain buffering role to prevent the detection equipment from being directly impacted, thereby avoiding damage to the detection device caused by the expansion or burst of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Structural schematic diagram of the fixed arc plate and the resilient plate of the present invention; Figure 3 Structural schematic diagram of the threaded rod and the sliding push plate of the present invention; Figure 4 Structural schematic diagram of the fixed plate and the vertical rod of the present invention; Figure 5 Structural schematic diagram of the fixed rod and the inner plate of the present invention; Figure 6 Structural schematic diagram of the connecting rod and the fixed key of the present invention; Figure 7 Structural schematic diagram of the rotating rod and the protection plate of the present invention.

[0019] In the figure: 1, base; 2, support frame; 3, top plate; 4, electric push rod; 5, support seat; 6, inner rod; 7, fixed arc plate; 8, resilient plate; 9, sliding frame; 10, threaded rod; 11, sliding push plate; 12, detection airbag; 13, scraping plate; 14, inclined panel; 15, sliding rod; 16, sliding key; 17, fixed clamping plate; 21, fixed plate; 22, vertical rod; 23, sliding pressure rod; 24, pulling plate; 25, fixed rod; 26, inner plate; 27, push rod; 28, fixed frame; 29, inserting rod; 31, connecting rod; 32, fixed key; 33, rotating rod; 34, protection plate; 35, controller; 36, elastic telescopic rod; 37, telescopic key; 38, sliding plate; 39, push plate; 391, arc plate. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 7 , one embodiment of the present invention is: A petrochemical machinery pipeline strength detection device, including a base 1, a support frame 2 is fixedly installed on the top of the base 1, a top plate 3 is fixedly installed on the top of the support frame 2, an electric push rod 4 is fixedly installed on the top of the top plate 3, an inner rod 6 is slidably installed on the inner wall of the electric push rod 4, a fixed arc plate 7 is fixedly installed at the bottom of the inner rod 6, a resilient plate 8 is fixedly installed at the bottom of the fixed arc plate 7, a support seat 5 is fixedly installed on the top of the base 1, and a fixing device is further provided on the top of the base 1; The fixing device includes a sliding frame 9, a threaded rod 10, a sliding push plate 11, a detection airbag 12, a scraping plate 13 and an inclined panel 14. The sliding frame 9 is slidably installed on the inner wall of the base 1. The threaded rod 10 is rotatably installed on one side of the sliding frame 9 close to the support seat 5. The sliding push plate 11 is threadedly connected to the threaded rod 10. The detection airbag 12 is fixedly installed on the circumferential surface of the threaded rod 10. The scraping plate 13 is slidably installed on the inner wall of the threaded rod 10. The inclined panel 14 is rotatably installed on one side of the scraping plate 13 close to the support seat 5.

[0022] The fixing device further includes a sliding rod 15, a sliding key 16 and a fixing clamping plate 17. The sliding rod 15 is slidably installed on the top of the base 1. The sliding key 16 is slidably installed on the top of the base 1. The fixing clamping plate 17 is rotatably installed on the top of the base 1. Grinding the inner wall of the pipeline can remove dirt, scale, rust, oxides and other deposits on the inner surface of the pipeline, which is very important for ensuring the accuracy of detection. Avoiding these impurities may affect the sealing performance of the detection airbag 12 or cause local pressure unevenness, thus affecting the detection results.

[0023] A first spring is provided between the fixed arc plate 7 and the rebound plate 8. The first spring is provided to drive the rebound plate 8 back to its original position. A second spring is provided between the scraping plate 13 and the threaded rod 10. The second spring is provided to drive the scraping plate 13 back to its original position. A third spring is provided between the sliding rod 15 and the base 1. The third spring is provided to drive the sliding rod 15 back to its original position. One side of the sliding rod 15 close to the fixing clamping plate 17 is set as an inclined surface. One side of the sliding rod 15 close to the sliding push plate 11 is set as an inclined surface. A fourth spring is provided between the inner rod 6 and the electric push rod 4. The fourth spring is provided to drive the inner rod 6 to slide into the electric push rod 4. A first torsion spring is provided between the fixing clamping plate 17 and the base 1. The first torsion spring is provided to drive the fixing clamping plate 17 to rotate for fixing.

[0024] During the operation of this embodiment: When performing strength detection on the pipeline, the pipeline needs to be placed on the surface of the support base 5 and wait for detection. After the placement is completed, the electric push rod 4 will be activated to push the fixed arc plate 7 downward. When the fixed arc plate 7 moves downward, it will push the rebound plate 8 to move, and then the rebound plate 8 will contact the surface of the pipeline. After the contact is completed, the staff will put the detection airbag 12 into the pipeline for detection. When the pipeline expands, it will push the rebound plate 8 to move in the direction of the fixed arc plate 7. At this time, the staff will turn off the device to prevent the pipeline from continuing to expand. When detecting the pipeline, the sliding frame 9 will slide towards the pipeline. When the sliding frame 9 slides, it will push the threaded rod 10 to move. When the threaded rod 10 moves, it will push the scraping plate 13 to move. When the scraping plate 13 moves, it will push the inclined panel 14 to move. When the inclined panel 14 moves, it will move towards the inside of the pipeline. When the threaded rod 10 moves, it will drive the sliding push plate 11 to move. When the sliding push plate 11 moves, it will contact the support base 5. Then, the sliding push plate 11 will move in the direction of the sliding frame 9 due to the reaction force. When the sliding push plate 11 moves, it will drive the threaded rod 10 to rotate. When the threaded rod 10 rotates, it will drive the scraping plate 13 to rotate. When the scraping plate 13 rotates, it will polish the inside of the pipeline. Polishing the inner surface of the pipeline can make the detection airbag 12 better fit the inner wall of the pipeline. Polishing the inner wall of the pipeline can remove dirt, scale, rust, oxides, and other deposits on the inner surface of the pipeline. This is very important for ensuring the accuracy of the detection because these impurities may affect the sealing performance of the detection airbag 12 or cause local pressure unevenness, thus affecting the detection results. When the sliding push plate 11 moves, it will push the sliding rod 15 to move. When the sliding rod 15 moves, it will push the sliding key 16 to move. When the sliding key 16 moves, it will release the limit on the fixed clamping plate 17. When the limit on the fixed clamping plate 17 is released, the fixed clamping plate 17 will be driven by the first torsion spring to rotate towards the pipeline to strengthen the fixation of the pipeline. During the expansion process of the detection airbag 12, if the pipeline is not fixed, displacement or deformation may occur, resulting in inaccurate test results. Fixing the pipeline can ensure that the pipeline always maintains the correct orientation and shape during the detection process, thus ensuring the reliability of the detection.

[0025] Please refer to Figures 1 - 7, on the basis of the above embodiments, in another embodiment of the present invention, a monitoring device for detecting pipeline expansion and a protection device for protecting the detection device are further provided on the top of the base 1. The monitoring device includes a fixing plate 21, a vertical rod 22, a sliding pressure rod 23, a pulling plate 24, a fixing rod 25, an inner plate 26, a push rod 27, a fixing frame 28 and a plug rod 29. The fixing plate 21 is fixedly installed on the side of the fixing clamp 17 away from the support base 5. The vertical rod 22 is slidably installed on the side of the support frame 2 close to the fixing plate 21. The sliding pressure rod 23 is slidably installed at the bottom of the top plate 3. The pulling plate 24 is slidably installed at the bottom of the top plate 3. The fixing rod 25 is fixedly installed at the bottom of the top plate 3. The inner plate 26 is slidably installed on the inner wall of the fixing rod 25. The push rod 27 is fixedly installed on the top of the spring-back plate 8. The push rod 27 slidably penetrates through the fixed arc plate 7. The fixing frame 28 is slidably installed on the circumferential surface of the electric push rod 4. A sliding groove is formed at the top of the fixing frame 28. The plug rod 29 is slidably installed on the inner wall of the sliding groove. Before the pipeline is fixed, the spring-back plate 8 and the fixed arc plate 7 are limited. Since the amplitude of spring-back is directly related to the degree of pipeline expansion, the unfixed pipeline may cause the spring-back data to be distorted, thereby affecting the accuracy of the detection result. Therefore, the protection device is provided in advance, which affects the detection result.

[0026] One side of the sliding pressure rod 23 close to the vertical rod 22 is provided as an inclined surface. The sliding pressure rod 23 is provided with an inclined surface to facilitate the vertical rod 22 to push the sliding pressure rod 23 to move. One side of the sliding pressure rod 23 close to the pulling plate 24 is provided as an inclined surface. The sliding pressure rod 23 is provided with an inclined surface to facilitate the pulling plate 24 to push the sliding pressure rod 23 to move. A fifth spring is provided between the pulling plate 24 and the top plate 3. The fifth spring is provided to drive the pulling plate 24 back to its original position. A fixed block is provided on one side of the inner plate 26 close to the fixed arc plate 7. Fixing holes are respectively formed on one side of the fixed arc plate 7 and the spring-back plate 8 close to the inner plate 26. The fixed block is in contact with the inner wall of the fixing hole. One side of the push rod 27 close to the fixing frame 28 is provided as an inclined surface. The push rod 27 is provided with an inclined surface to facilitate the push rod 27 to push the plug rod 29 to move. The plug rod 29 slidably penetrates through the electric push rod 4. A square groove is formed on one side of the inner rod 6 close to the plug rod 29. The plug rod 29 is in contact with the inner wall of the square groove.

[0027] The protection device includes a connecting rod 31, a fixed key 32, a rotating rod 33, a protection plate 34 and a controller 35. The fixed key 32 is slidably installed at the bottom of the top plate 3. One end of the connecting rod 31 is rotatably installed at the top of the fixed frame 28, and the other end of the connecting rod 31 is rotatably installed at the bottom of the fixed key 32. The rotating rod 33 is rotatably installed at the bottom of the top plate 3. The protection plate 34 is fixedly installed at one end of the rotating rod 33 away from the electric push rod 4. The controller 35 is fixedly installed at the bottom of the top plate 3. The control end of the controller 35 is electrically connected to the detection airbag 12. When the fixed arc plate 7 moves, it will drive the return plate 8 to move. When the return plate 8 moves away from the pipeline and the elastic telescopic plate moves away from the pipeline, it can be used as a warning signal to remind the detection personnel that the pressure of the current pipeline is approaching the danger limit, and then adjust the detection method or stop further pressure application. This helps to improve the safety of the detection process, avoid unnecessary risks to the pipeline and related equipment, and at the same time can protect the return plate 8 from being damaged by the pipeline rupture.

[0028] The protection device further includes an elastic telescopic rod 36, a telescopic key 37, a sliding plate 38, a push plate 39 and an arc plate 391. The elastic telescopic rod 36 is fixedly installed on the side of the protection plate 34 away from the electric push rod 4. The arc plate 391 is fixedly installed on the side of the elastic telescopic rod 36 away from the protection plate 34. The telescopic key 37 is slidably installed on the inner wall of the movable rod of the elastic telescopic rod 36. The telescopic key 37 slidably penetrates the inner wall of the fixed outer rod of the elastic telescopic rod 36. The sliding plate 38 is slidably installed on the inner wall of the protection plate 34. A chute is formed on the side of the protection plate 34 close to the elastic telescopic rod 36. The push plate 39 is fixedly installed on the side of the sliding plate 38 close to the telescopic key 37. The push plate 39 contacts the inner wall of the chute. When the movable end of the elastic telescopic rod 36 moves, it will push the arc plate 391 to contact the pipeline to protect the detection device. In this way, even if the pipeline undergoes accidental expansion or burst, the arc plate 391 can play a certain buffering role to prevent the detection equipment from being directly impacted and avoid damage to the detection device caused by the expansion or burst of the pipeline.

[0029] A second torsion spring is provided between the rotating rod 33 and the top plate 3 to drive the rotating rod 33 to rotate. A sixth spring is provided between the fixed key 32 and the top plate 3 to drive the fixed key 32 back to its original position. A seventh spring is provided between the sliding plate 38 and the protection plate 34 to drive the sliding plate 38 back to its original position. The fixed key 32 slidably penetrates the outer wall of the rotating rod 33.

[0030] During the operation of this embodiment: when the fixed clamping plate 17 rotates, it will drive the fixed plate 21 to move. The movement of the fixed plate 21 will push the vertical rod 22 to slide upward. The upward sliding of the vertical rod 22 will push the sliding pressure rod 23 to move in the direction of the pull plate 24. Then, the inclined surface of the sliding pressure rod 23 will contact the pull plate 24, and the pull plate 24 will be pushed by the sliding pressure rod 23 to move away from the rebound plate 8. The movement of the pull plate 24 will pull the fixed rod 25 to move. The movement of the fixed rod 25 will drive the inner plate 26 to move. The movement of the inner plate 26 will drive the fixed block to move away from the rebound plate 8. Then, the limit between the rebound plate 8 and the fixed arc plate 7 will be released. When the pipeline expands, the rebound plate 8 will move in the direction of the fixed arc plate 7. Before the pipeline is fixed, the rebound plate 8 and the fixed arc plate 7 are limited. Since the rebound amplitude is directly related to the pipeline expansion degree, the unfixed pipeline may cause the rebound data to be distorted, which will affect the accuracy of the detection result, resulting in the protection device being set in advance and affecting the detection result. When the fixed arc plate 7 moves, it will push the push rod 27 to move in the direction of the fixed frame 28. Then, the push rod 27 will contact the inclined surface of the insertion rod 29. The push rod 27 will push the insertion rod 29 to move away from the electric push rod 4. Then, the limit between the inner rod 6 and the electric push rod 4 will be released. The inner rod 6 will be pulled by the fourth spring to slide into the electric push rod 4. The movement of the inner rod 6 will drive the fixed arc plate 7 to move. The movement of the fixed arc plate 7 will drive the rebound plate 8 to move. When the elastic telescopic plate moves away from the pipeline, it can be used as a warning signal to remind the detector that the current pipeline pressure is approaching the dangerous limit, so as to adjust the detection method or stop further pressure application. This helps to improve the safety of the detection process, avoid unnecessary risks to the pipeline and related equipment, and also protect the rebound plate 8 from being damaged by the pipeline rupture.

[0031] When the fixed arc plate 7 moves, it will push the fixed frame 28 to move. When the fixed frame 28 moves, it will push the connecting rod 31 to move. When the connecting rod 31 moves, it will push the fixed key 32 to slide away from the rotating rod 33. Then the limit of the rotating rod 33 will be released, and the rotating rod 33 will be driven by the second torsion spring to rotate towards the rebound plate 8. When the rotating rod 33 rotates, it will push the protection plate 34 to move. The movement of the protection plate 34 protects the rebound plate 8. The movement of the fixed key 32 will contact the control end of the controller 35. When the control end of the controller 35 is pressed, the detection airbag 12 will stop expanding, avoiding the continuous expansion of the detection airbag 12 from damaging the pipeline. If the detection airbag 12 expands excessively and the pressure inside the pipeline exceeds the design strength limit of the pipeline, it will cause the pipeline to rupture or be damaged. Stopping the continuous expansion of the detection airbag 12 can effectively prevent the pressure inside the pipeline from continuing to increase, thereby avoiding exceeding the design pressure-bearing capacity of the pipeline and being able to automatically stop the further expansion of the detection airbag 12 when the pipeline reaches this pressure. When the protection plate 34 rotates, the sliding plates 38 will contact each other, and then the sliding plates 38 will slide towards the elastic telescopic rod 36. The sliding of the sliding plates 38 will drive the push plate 39 to move. The movement of the push plate 39 will push the telescopic key 37 to slide inside the elastic telescopic rod 36. Then the limit of the elastic telescopic rod 36 will be released, and the movable end of the elastic telescopic rod 36 will move away from the protection plate 34. The movement of the movable end of the elastic telescopic rod 36 will push the arc plate 391 to contact the pipeline, protecting the detection device. In this way, even if the pipeline undergoes accidental expansion or bursting, the arc plate 391 can play a certain buffering role to prevent the detection equipment from being directly impacted and avoid damage to the detection device caused by the expansion or bursting of the pipeline.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petrochemical mechanical pipeline strength detection device, comprising a base (1), characterized in that: A support frame (2) is fixedly mounted on the top of the base (1), a top plate (3) is fixedly mounted on the top of the support frame (2), an electric push rod (4) is fixedly mounted on the top of the top plate (3), an inner rod (6) is slidably mounted on the inner wall of the electric push rod (4), a fixed arc plate (7) is fixedly mounted on the bottom of the inner rod (6), a rebound plate (8) is fixedly mounted on the bottom of the fixed arc plate (7), a support seat (5) is fixedly mounted on the top of the base (1), and a fixing device is also provided on the top of the base (1); The fixing device comprises a sliding frame (9), a threaded rod (10), a sliding push plate (11), a detection airbag (12), a scraper (13) and an inclined plate (14); the sliding frame (9) is slidably mounted on the inner wall of the base (1); the threaded rod (10) is rotatably mounted on a side of the sliding frame (9) close to the support seat (5); the sliding push plate (11) is threadedly connected to the threaded rod (10); the detection airbag (12) is fixedly mounted on the circumferential surface of the threaded rod (10); the scraper (13) is slidably mounted on the inner wall of the threaded rod (10); and the inclined plate (14) is rotatably mounted on a side of the scraper (13) close to the support seat (5); Wherein, a monitoring device for detecting pipeline expansion and a protection device for protecting the detection device are also provided on the top of the base (1).

2. A petrochemical mechanical pipeline strength detection device according to claim 1, characterized in that: The fixing device further comprises a sliding rod (15), a sliding key (16) and a fixing clamp (17), wherein the sliding rod (15) is slidably mounted on the top of the base (1), the sliding key (16) is slidably mounted on the top of the base (1), and the fixing clamp (17) is rotatably mounted on the top of the base (1).

3. A petrochemical mechanical pipeline strength detection device according to claim 2, characterized in that: A No. 1 spring is provided between the fixed arc plate (7) and the rebound plate (8), a No. 2 spring is provided between the scraper plate (13) and the threaded rod (10), a No. 3 spring is provided between the sliding rod (15) and the base (1), a side of the sliding rod (15) close to the fixed clamping plate (17) is set as an inclined surface, a side of the sliding rod (15) close to the sliding push plate (11) is set as an inclined surface, a No. 4 spring is provided between the inner rod (6) and the electric push rod (4), and a No. 1 torsion spring is provided between the fixed clamping plate (17) and the base (1).

4. A petrochemical mechanical pipeline strength detection device according to claim 3, characterized in that: The monitoring device comprises a fixed plate (21), a vertical rod (22), a sliding pressure rod (23), a pull plate (24), a fixed rod (25), an inner plate (26), a push rod (27), a fixed frame (28) and an insertion rod (29), wherein the fixed plate (21) is fixedly mounted on a side of the fixed clamping plate (17) away from the support seat (5), the vertical rod (22) is slidably mounted on a side of the support frame (2) close to the fixed plate (21), the sliding pressure rod (23) is slidably mounted on the bottom of the top plate (3), and the push rod (27) is fixedly mounted on a side of the fixed clamping plate (17) away from the support seat (5). The plate (24) is slidably mounted on the bottom of the top plate (3), the fixed rod (25) is fixedly mounted on the bottom of the top plate (3), the inner plate (26) is slidably mounted on the inner wall of the fixed rod (25), the push rod (27) is fixedly mounted on the top of the rebound plate (8), the push rod (27) slides through the fixed arc plate (7), the fixed frame (28) is slidably mounted on the circumferential surface of the electric push rod (4), a sliding groove is provided on the top of the fixed frame (28), and the insertion rod (29) is slidably mounted on the inner wall of the sliding groove.

5. A petrochemical mechanical pipeline strength detection device according to claim 4, characterized in that: The side of the sliding pressure rod (23) close to the vertical rod (22) is set as an inclined surface, the side of the sliding pressure rod (23) close to the pull plate (24) is set as an inclined surface, a No. 5 spring is provided between the pull plate (24) and the top plate (3), a fixing block is provided on the side of the inner plate (26) close to the fixed arc plate (7), the fixed arc plate (7) and the rebound plate (8) are respectively provided with fixing holes on the side close to the inner plate (26), the fixing block is in contact with the inner wall of the fixing hole, the side of the push rod (27) close to the fixed frame (28) is set as an inclined surface, the insertion rod (29) slides through the electric push rod (4), the side of the inner rod (6) close to the insertion rod (29) is provided with a square groove, and the insertion rod (29) is in contact with the inner wall of the square groove.

6. A petrochemical mechanical pipeline strength detection device according to claim 5, characterized in that: The protection device comprises a connecting rod (31), a fixed key (32), a rotating rod (33), a protection plate (34) and a controller (35), wherein the fixed key (32) is slidably mounted on the bottom of the top plate (3), one end of the connecting rod (31) is rotationally mounted on the top of the fixing frame (28), the other end of the connecting rod (31) is rotationally mounted on the bottom of the fixed key (32), the rotating rod (33) is rotationally mounted on the bottom of the top plate (3), the protection plate (34) is fixedly mounted on one end of the rotating rod (33) away from the electric push rod (4), and the controller (35) is fixedly mounted on the bottom of the top plate (3), and the control end of the controller (35) is electrically connected to the detection airbag (12).

7. A petrochemical mechanical pipeline strength detection device according to claim 6, characterized in that: The protection device further comprises an elastic telescopic rod (36), a telescopic key (37), a sliding plate (38), a push plate (39) and an arc plate (391), wherein the elastic telescopic rod (36) is fixedly mounted on a side of the protection plate (34) away from the electric push rod (4), the arc plate (391) is fixedly mounted on a side of the elastic telescopic rod (36) away from the protection plate (34), the telescopic key (37) is slidably mounted on the inner wall of the movable rod of the elastic telescopic rod (36), the telescopic key (37) slides through the inner wall of the fixed outer rod of the elastic telescopic rod (36), the sliding plate (38) is slidably mounted on the inner wall of the protection plate (34), a sliding groove is provided on a side of the protection plate (34) close to the elastic telescopic rod (36), the push plate (39) is fixedly mounted on a side of the sliding plate (38) close to the telescopic key (37), and the push plate (39) contacts the inner wall of the sliding groove.

8. A petrochemical mechanical pipeline strength detection device according to claim 7, characterized in that: A No. 2 torsion spring is provided between the rotating rod (33) and the top plate (3), a No. 6 spring is provided between the fixed key (32) and the top plate (3), a No. 7 spring is provided between the sliding plate (38) and the protection plate (34), and the fixed key (32) slides through the outer wall of the rotating rod (33).

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