Ultrasonic testing equipment for pressure pipelines

Abstract

The present invention discloses an ultrasonic detection device for pressure pipelines, which relates to the technical field of ultrasonic non-destructive testing equipment. The present invention includes an equipment body, a detection device fixed on the top of the equipment body, and the detection device includes two U-shaped chute plates fixed on both sides of the equipment body, a U-shaped frame fixed in the middle of the equipment body, and two fixed frames fixed on the top of the equipment body and located between the U-shaped chute plates and the U-shaped frames. A lower roller is rotatably installed between the lower inner walls of the U-shaped chute plates, and sliders are slidably installed inside the chute on both sides of the U-shaped chute plates, and a spring is provided between the slider and the inner wall of the chute of the U-shaped chute plate. An upper roller is rotatably installed between the two sliders. The present invention, through the arrangement of the detection device, enables the lower roller, upper roller, pressure plate, detection head, rotating rod, and rubber roller to cooperate to drive the pipeline to rotate, so that the detection head can perform all-round detection of the pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic nondestructive testing equipment, in particular to an ultrasonic testing equipment for pressure pipelines. Background Art

[0002] Ultrasonic nondestructive testing equipment uses ultrasonic technology to detect internal defects in pipelines, such as cracks and corrosion. By transmitting and receiving ultrasonic signals, the equipment accurately assesses the structural integrity of the pipeline, ensuring its safe operation. This equipment is widely used for pipeline maintenance and inspection in industries such as oil, gas, and power.

[0003] A Chinese patent with patent announcement number CN222689703U discloses an ultrasonic non-destructive testing device for pipeline crack detection, which relates to the technical field of pipeline crack detection. The patent includes a base frame, a transmission mechanism is fixedly provided at the upper end of the base frame, and the transmission mechanism is used to transmit the pipeline. Two brackets are fixedly provided at the upper end of the transmission mechanism, and a detection mechanism used in conjunction with the transmission mechanism is commonly provided on one side of the opposite surfaces of the two brackets. The detection mechanism is used to detect the pipeline, and the detection mechanism includes a detection plate, a cylinder is provided below the detection plate, a movable plate is fixedly provided at the output end of the cylinder, a push rod is fixedly provided on one side of the movable plate, and a rotating plate is provided on the outer surface of the push rod. The patent uses the detection mechanism to realize that the ultrasonic non-destructive testing equipment can scan and detect the pipeline surface well, and uses the transmission mechanism to realize that the ultrasonic non-destructive testing equipment can transmit the pipeline well.

[0004] However, the current ultrasonic detection equipment has the following problems: when the ultrasonic detection equipment is used to detect the pipeline, the detection head of the ultrasonic detection equipment is not convenient for all-round detection of the pipeline, which will cause the ultrasonic signal to be unable to completely reflect or penetrate all parts of the pipeline. The accuracy and completeness of the pipeline detection results will be affected, and all defects in the pipeline cannot be found. Therefore, we propose an ultrasonic detection equipment for pressure pipelines. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an ultrasonic detection device for pressure pipelines, which solves the problems raised in the above background technology.

[0006] The cam is fixed on the top of the U-shaped frame, and the cam is fixed on the top of the U-shaped frame. A spring is provided, and a detection head is passed through and fixed on the top of the pressure plate, and the detection head is electrically connected to the ultrasonic non-destructive testing equipment. A rotating rod is rotatably installed between the two fixed frames, and the rotating rod is driven by a motor. A rubber roller is fixed to the outside of the rotating rod, and the top surface of the rubber roller is on the same horizontal plane as the top of the concave surface of the lower roller, and the bottom surface of the pressure plate is on the same horizontal plane as the bottom of the concave surface of the upper roller. The pipeline to be inspected is placed between the lower roller and the upper roller, and the pressure plate is placed on the pipeline. Under the action of the spring force corresponding to the pressure plate, the pressure plate carries the detection head and is close to the outer wall of the pipeline. The ultrasonic non-destructive testing equipment is started. The ultrasonic non-destructive testing equipment can perform defect detection on the inside of the pipeline through the detection head. At the same time, the rotating rod is driven to rotate by the motor, and the rotating rod drives the rubber roller to rotate. Under the action of the friction between the rubber roller and the pipeline, the rubber roller drives the pipeline to rotate.

[0007] According to the above technical solution, an oblique rod is fixed to the front side of the pressure plate. Through the setting of the oblique rod, the pressure plate can adaptively drive the detection head to fit pipes of different models and sizes.

[0008] According to the above technical solution, a smearing device is provided at the front U-shaped chute plate, and the smearing device includes a coupling agent box, which is fixed at the outer wall of the front U-shaped chute plate, and the rotating rod passes through the outer wall of the coupling agent box. A round frame is fixed to the outside of the rotating rod, and the round frame is located inside the coupling agent box. A sponge ring is fixed to the outside of the round frame, and the top surface of the sponge ring is three centimeters higher than the top surface of the rubber roller. Before pipeline inspection, it is necessary to apply coupling agent to the inspection part of the pipeline. When the rotating rod rotates, the sponge ring will be driven to rotate through the round frame, and the sponge ring drives the coupling agent in the coupling agent box to be evenly applied to the surface of the pipeline.

[0009] According to the above technical solution, the coating device also includes a liquid receiving box, an L-shaped frame, two oblique tubes, and two scrapers. The L-shaped frame is fixed to the outer wall of the fixed frame on the front side, the liquid receiving box is fixed to the top of the L-shaped frame, and the liquid receiving box is sleeved on the outside of the rubber roller. The two oblique tubes are fixed between the liquid receiving box and the coupling agent box. The two scrapers are respectively fixed on both sides of the inner wall of the liquid receiving box. The two oblique tubes are arranged with uniform inclined surfaces. The two scrapers are in contact with the outer wall of the rubber roller. When excess coupling agent on the surface of the pipeline adheres to the rubber roller, the scraper will scrape the coupling agent adhered to the rubber roller into the liquid receiving box, and the coupling agent in the liquid receiving box will flow into the coupling agent box through the oblique tubes.

[0010] According to the above technical solution, the smearing device also includes an arc block ring, an elastic telescopic rod, an L-shaped connecting rod, a knocking column, and a resistance rod. The arc block ring is fixed to the outer wall of the rotating rod, the fixed end of the elastic telescopic rod is fixed to the outer wall of the L-shaped frame, the L-shaped connecting rod is fixed to the bottom of the telescopic end of the elastic telescopic rod, the knocking column is fixed to the top of the vertical support rod of the L-shaped connecting rod, and the resistance rod is fixed to the top of the horizontal support rod of the L-shaped connecting rod. Several arc blocks are fixed to the outside of the arc block ring, and the top of the resistance rod is semicircular. The semicircular shape of the resistance rod is located at When the rotating rod rotates, the arc block of the arc block ring will drive the arc block ring to rotate. The arc block of the arc block ring pushes the semicircle of the resistance rod to drive the resistance rod to move downward. The resistance rod pushes the L-shaped connecting rod to move downward. The L-shaped connecting rod drives the telescopic end of the elastic telescopic rod to stretch, and the L-shaped connecting rod drives the knocking column away from the liquid receiving box. When the arc block of the arc block ring no longer pushes the semicircle of the resistance rod, under the elastic force of the elastic telescopic rod, the telescopic end of the elastic telescopic rod drives the L-shaped connecting rod to reset and move upward, and the L-shaped connecting rod drives the knocking column to knock on the liquid receiving box, causing the liquid receiving box to vibrate.

[0011] The two L-shaped columns are respectively slidably mounted on both sides of the inner wall of the U-shaped slide plate on the front side, and the two L-shaped columns are in contact with the top of the rotating shaft of the upper rotating roller. The outer walls of the two L-shaped columns are provided with through grooves, and one end of the two L-shaped columns is fixed to the outer wall of the rotating shaft of the upper rotating roller on the front side, and the other ends of the two L-shaped columns are respectively slidably mounted on the through grooves of the two L-shaped columns. Internally, the U-shaped lifting plate is fixed between the bottoms of the two L-shaped slot plates, and the top of the U-shaped lifting plate contacts the bottom of the pressure plate. When it is necessary to measure the point position of the next section of the pipeline, the pipeline is pushed to move. At this time, the pipeline drives the lower roller and the upper roller to rotate. When the upper roller rotates, the upper roller drives the L-shaped column to rotate. The L-shaped column slides along the inside of the slot of the L-shaped slot plate, and the L-shaped column pushes the L-shaped slot plate to move upward along the inner wall of the U-shaped slide plate. The L-shaped slot plate drives the U-shaped lifting plate to move upward, and the U-shaped lifting plate pushes the pressure plate to lift the detection head.

[0012] The present invention provides an ultrasonic detection device for pressure pipelines. It has the following beneficial effects:

[0013] (1) The present invention arranges the detection device so that the lower roller, the upper roller, the pressure plate, the detection head, the rotating rod and the rubber roller cooperate to drive the pipeline to rotate, so that the detection head can detect the pipeline in all directions; at the same time, when the pipeline passes between the lower roller and the upper roller on the front side, the pipeline will hit the inclined surface of the inclined rod, and the pipeline pushes the inclined surface of the inclined rod to drive the pressure plate to move upward until the pressure plate fits with the top surface of the pipeline. Through the arrangement of the inclined rod, the pressure plate can adaptively drive the detection head to fit pipelines of different models and sizes.

[0014] (2) The present invention sets up a coating device so that the rotating rod and the round frame cooperate to drive the sponge ring to evenly coat the coupling agent in the coupling agent box on the surface of the pipe, thereby reducing the intervention of the operator during the detection process. Coupling agent coating can reduce the signal loss caused by air or other media, ensuring that the ultrasonic signal can be smoothly transmitted to the inside of the pipe; at the same time, the scraper will scrape the coupling agent adhering to the rubber roller into the liquid receiving box, and the coupling agent in the liquid receiving box will flow into the coupling agent box through the inclined tube, so that the coupling agent can be effectively recovered. This recovery mechanism reduces the waste of coupling agent and can be reused, reducing operating costs and resource waste, especially in the long-term detection process, which can save time. It saves a lot of coupling agent, and scraping off excess coupling agent can ensure that the friction between the rubber roller and the pipe is always stable, thereby avoiding detection errors caused by uneven friction between the rubber roller and the pipe; at the same time, the rotating rod, arc block ring, resistance rod, L-shaped connecting rod, and elastic telescopic rod work together to drive the knocking column to knock on the coupling liquid box, causing the coupling box to vibrate, thereby helping the coupling agent to flow more smoothly through the inclined tube into the coupling agent box. The vibration can increase the fluidity of the liquid and reduce the resistance of the coupling agent in the pipeline, thereby accelerating the coupling agent recovery process. At the same time, the vibration of the coupling box helps to reduce the adhesion of the coupling agent on the scraper and rubber roller, allowing the scraper to more effectively scrape excess coupling agent from the surface of the rubber roller.

[0015] (3) The present invention sets an anti-wear device so that the lower roller, the upper roller, the L-shaped column rod and the L-shaped slot plate cooperate to drive the U-shaped lifting plate to move upward, and the U-shaped lifting plate pushes the pressure plate to lift the detection head, thereby avoiding the problem that the pipeline will rub against the detection end of the detection head during movement, causing the detection head to be damaged due to friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the present invention as a whole Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the present invention as a whole Figure 2 ;

[0018] Figure 3 is a schematic diagram of a detection device of the present invention;

[0019] Figure 4 is a partial cross-sectional schematic diagram of the coating device of the present invention;

[0020] Figure 5 Schematic diagram of the local structure of the coating device of the present invention Figure 1 ;

[0021] Figure 6 Schematic diagram of the local structure of the coating device of the present invention Figure 2 ;

[0022] Figure 7 Schematic diagram of the anti-wear device of the present invention.

[0023] In the figure: 1. Equipment body; 2. Detection device; 21. U-shaped frame; 22. Positioning rod; 23. Ultrasonic non-destructive testing equipment; 24. Pressing plate; 25. Detection head; 26. U-shaped slide plate; 27. Lower roller; 28. Sliding block; 29. Upper roller; 210. Oblique rod; 211. Fixed frame; 212. Rotating rod; 213. Rubber roller; 3. Coating device; 31. Couplant box; 32. Round frame; 33. Sponge ring; 34. Liquid collecting box; 35. L-shaped frame; 36. Oblique tube; 37. Scraper; 38. Arc block ring; 39. Elastic telescopic rod; 310. L-shaped connecting rod; 311. Knocking column; 312. Resistance rod; 4. Anti-wear device; 41. L-shaped through-slot plate; 42. L-shaped column; 43. U-shaped lifting plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1 - Figure 7The present invention provides a technical solution: an ultrasonic detection device for a pressure pipeline, comprising an equipment main body 1, a detection device 2 is fixed on the top of the equipment main body 1, the detection device 2 comprises two U-shaped slide plates 26 respectively fixed on both sides of the equipment main body 1, a U-shaped frame 21 fixed in the middle of the equipment main body 1, two fixed frames 211 fixed on the top of the equipment main body 1 and located between the U-shaped slide plate 26 and the U-shaped frame 21, a lower roller 27 is rotatably installed between the inner wall below the U-shaped slide plate 26, sliders 28 are slidably installed inside the slide grooves on both sides of the U-shaped slide plate 26, and a spring is provided between the slider 28 and the inner wall of the slide groove of the U-shaped slide plate 26, an upper roller 29 is rotatably installed between the two sliders 28, an ultrasonic non-destructive testing device 23 is embedded in the top of the U-shaped frame 21, and a positioning rod is vertically penetrated and slidably installed on the top of the U-shaped frame 21 22. A pressure plate 24 is fixed between the bottoms of the two positioning rods 22, and a spring is provided between the pressure plate 24 and the U-shaped frame 21. A detection head 25 is passed through and fixed on the top of the pressure plate 24, and the detection head 25 is electrically connected to the ultrasonic non-destructive testing equipment 23. A rotating rod 212 is rotatably installed between the two fixing frames 211, and the rotating rod 212 is driven by a motor. A rubber roller 213 is fixed to the outside of the rotating rod 212. The top surface of the rubber roller 213 is on the same horizontal plane as the top of the concave surface of the lower rotating roller 27, and the bottom surface of the pressure plate 24 is on the same horizontal plane as the bottom of the concave surface of the upper rotating roller 29. Through the arrangement of the above structure, the rotating rod 212 drives the rubber roller 213 to rotate. Under the action of the friction between the rubber roller 213 and the pipeline, the rubber roller 213 drives the pipeline to rotate, so that the detection head 25 can detect the pipeline in all directions.

[0026] An oblique rod 210 is fixed to the front side of the pressing plate 24. Through the arrangement of the oblique rod 210, the pressing plate 24 can adaptively drive the detection head 25 to fit pipes of different models and sizes.

[0027] A coating device 3 is provided at the front U-shaped chute plate 26. The coating device 3 includes a coupling agent box 31. The coupling agent box 31 is fixed to the outer wall of the front U-shaped chute plate 26. The rotating rod 212 passes through the outer wall of the coupling agent box 31. A round frame 32 is fixed to the outside of the rotating rod 212, and the round frame 32 is located inside the coupling agent box 31. A sponge ring 33 is fixed to the outside of the round frame 32. The top surface of the sponge ring 33 is three centimeters higher than the top surface of the rubber roller 213. Through the arrangement of the above structure, the sponge ring 33 drives the coupling agent in the coupling agent box 31 to be evenly coated on the surface of the pipeline, thereby reducing the intervention of the operator during the detection process. Applying the coupling agent can reduce the signal loss caused by air or other media, ensuring that the ultrasonic signal can be smoothly transmitted to the inside of the pipeline.

[0028] The coating device 3 also includes a liquid receiving box 34, an L-shaped frame 35, two inclined tubes 36, and two scrapers 37. The L-shaped frame 35 is fixed to the outer wall of the fixing frame 211 on the front side. The liquid receiving box 34 is fixed to the top of the L-shaped frame 35, and the liquid receiving box 34 is sleeved on the outside of the rubber roller 213. The two inclined tubes 36 are fixed between the liquid receiving box 34 and the coupling agent box 31. The two scrapers 37 are respectively fixed on both sides of the inner wall of the liquid receiving box 34. The two inclined tubes 36 are set with uniform inclined surfaces. The two scrapers 37 are in contact with the outer wall of the rubber roller 213. The above-mentioned structure allows the coupling agent in the liquid receiving box 34 to flow into the coupling agent box 31 through the inclined tube 36, thereby effectively recovering the coupling agent. This recovery mechanism reduces the waste of coupling agent and allows it to be reused, thereby reducing operating costs and resource waste. In particular, a large amount of coupling agent can be saved during long-term testing. At the same time, scraping off excess coupling agent ensures that the friction between the rubber roller 213 and the pipeline is always stable, thereby avoiding detection errors caused by uneven friction between the rubber roller 213 and the pipeline.

[0029] The smearing device 3 also includes an arc block ring 38, an elastic telescopic rod 39, an L-shaped connecting rod 310, a knocking column 311, and a resistance rod 312. The arc block ring 38 is fixed to the outer wall of the rotating rod 212, the fixed end of the elastic telescopic rod 39 is fixed to the outer wall of the L-shaped frame 35, the L-shaped connecting rod 310 is fixed to the bottom of the telescopic end of the elastic telescopic rod 39, the knocking column 311 is fixed to the top of the vertical support rod of the L-shaped connecting rod 310, and the resistance rod 312 is fixed to the top of the horizontal support rod of the L-shaped connecting rod 310. Several arc blocks are fixed to the outside of the arc block ring 38, and the top of the resistance rod 312 is semicircular. The semicircular shape of 12 is located on the arc block motion trajectory of the arc block ring 38. Through the arrangement of the above structure, the knocking column 311 knocks the liquid receiving box 34, causing the liquid receiving box 34 to vibrate, thereby helping the coupling agent to flow more smoothly through the inclined tube 36 into the coupling agent tank 31. The vibration can increase the fluidity of the liquid and reduce the resistance of the coupling agent in the pipeline, thereby accelerating the coupling agent recovery process. At the same time, the vibration of the liquid receiving box 34 helps to reduce the adhesion of the coupling agent to the scraper 37 and the rubber roller 213, so that the scraper 37 can more effectively scrape off excess coupling agent from the surface of the rubber roller 213.

[0030] The front U-shaped chute plate 26 is provided with an anti-wear device 4, which includes a U-shaped lifting plate 43, two L-shaped through-groove plates 41, and two L-shaped pillars 42. The two L-shaped through-groove plates 41 are respectively slidably mounted on both sides of the inner wall of the U-shaped chute plate 26 on the front side, and the two L-shaped through-groove plates 41 are in contact with the top of the rotating shaft of the upper rotating roller 29. A through groove is provided on the outer wall of the two L-shaped through-groove plates 41. One end of the two L-shaped pillars 42 is fixed to the outer wall of the rotating shaft of the upper rotating roller 29 on the front side, and the other end of the two L-shaped pillars 42 are respectively slidably mounted on the two L-shaped through-groove plates 41. Inside the through groove, the U-shaped lifting plate 43 is fixed between the bottoms of the two L-shaped through groove plates 41, and the top of the U-shaped lifting plate 43 contacts the bottom of the pressure plate 24. Through the setting of the above structure, the upper rotating roller 29 drives the L-shaped column 42 to push the L-shaped through groove plate 41 to move upward along the inner wall of the U-shaped slide plate 26, and the L-shaped through groove plate 41 drives the U-shaped lifting plate 43 to move upward. The U-shaped lifting plate 43 pushes the pressure plate 24 to lift the detection head 25, thereby avoiding the problem that the pipeline will rub against the detection end of the detection head 25 during the movement, causing the detection head 25 to be damaged due to friction.

[0031] When in use, the pipe to be inspected is placed between the lower roller 27 and the upper roller 29, and the pressure plate 24 is placed on the pipe. Under the action of the spring force corresponding to the pressure plate 24, the pressure plate 24 brings the detection head 25 close to the outer wall of the pipe, and the ultrasonic non-destructive testing device 23 is started. The ultrasonic non-destructive testing device 23 can detect defects inside the pipe through the detection head 25. At the same time, the motor drives the rotating rod 212 to rotate, and the rotating rod 212 drives the rubber roller 213 to rotate. Under the action of the friction force, the rubber roller 213 drives the pipe to rotate, so that the detection head 25 can detect the pipe in all directions; at the same time, when the pipe passes between the lower rotating roller 27 and the upper rotating roller 29 on the front side, the pipe will hit the inclined surface of the inclined rod 210, and the pipe pushes the inclined surface of the inclined rod 210 to drive the pressure plate 24 to move upward until the pressure plate 24 is in contact with the top surface of the pipe. Through the setting of the inclined rod 210, the pressure plate 24 can adaptively drive the detection head 25 to fit pipes of different models and sizes.

[0032] Before pipeline inspection, it is necessary to apply coupling agent to the inspection part of the pipeline. When the rotating rod 212 rotates, the sponge ring 33 is driven to rotate through the circular frame 32. The sponge ring 33 drives the coupling agent in the coupling agent box 31 to be evenly applied to the surface of the pipeline, thereby reducing the intervention of the operator during the inspection process. Applying coupling agent can reduce the signal loss caused by air or other media, ensuring that the ultrasonic signal can be smoothly transmitted to the inside of the pipeline. When excess coupling agent on the pipeline surface adheres to the rubber roller 213, the scraper 37 will scrape the coupling agent adhered to the rubber roller 213 into the liquid receiving box 34. The coupling agent in the liquid receiving box 34 will flow into the coupling agent box 31 through the inclined tube 36, thereby effectively recovering the coupling agent. This recovery mechanism reduces the waste of coupling agent and can be reused, reducing operating costs and resource waste. In particular, a large amount of coupling agent can be saved during long-term inspections. At the same time, scraping off excess coupling agent can ensure that the friction between the rubber roller 213 and the pipeline is always stable, thereby avoiding inspection errors caused by uneven friction between the rubber roller 213 and the pipeline. When the rotating rod 212 rotates, the arc block ring 38 is driven to rotate, and the arc block of the arc block ring 38 pushes the semicircular shape of the resistance rod 312 to drive the resistance rod 312 to move downward, and the resistance rod 312 pushes the L-shaped connecting rod 310 to move downward, and the L-shaped connecting rod 310 drives the telescopic end of the elastic telescopic rod 39 to stretch, and the L-shaped connecting rod 310 drives the knocking column 311 away from the liquid receiving box 34. When the arc block of the arc block ring 38 no longer pushes the semicircular shape of the resistance rod 312, under the elastic force of the elastic telescopic rod 39, the telescopic end of the elastic telescopic rod 39 drives the L-shaped connecting rod 3 10 is reset and moves upward, and the L-shaped connecting rod 310 drives the knocking column 311 to knock the coupling fluid box 34, causing the coupling fluid box 34 to vibrate, thereby helping the coupling agent to flow more smoothly through the inclined tube 36 into the coupling fluid tank 31. The vibration can increase the fluidity of the liquid and reduce the resistance of the coupling agent in the pipeline, thereby accelerating the coupling agent recovery process. At the same time, the vibration of the coupling fluid box 34 helps to reduce the adhesion of the coupling agent to the scraper 37 and the rubber roller 213, allowing the scraper 37 to more effectively scrape off excess coupling agent from the surface of the rubber roller 213.

[0033] When it is necessary to measure the position of the next section of the pipeline, the pipeline is pushed to move. At this time, the pipeline drives the lower roller 27 and the upper roller 29 to rotate. When the upper roller 29 rotates, the upper roller 29 drives the L-shaped column 42 to rotate (it should be noted that when the upper roller 29 drives the L-shaped column 42 to rotate to the limit position of the through groove of the L-shaped through groove plate 41, the rolling friction between the upper roller 29 and the pipeline will change to sliding friction). The L-shaped column 42 slides along the through groove of the L-shaped through groove plate 41, and the L-shaped column 42 pushes the L-shaped through groove plate 41 to move upward along the inner wall of the U-shaped slide plate 26. The L-shaped through groove plate 41 drives the U-shaped lifting plate 43 to move upward. The U-shaped lifting plate 43 pushes the pressure plate 24 to lift the detection head 25, thereby preventing the pipeline from coming into contact with the detection head during movement. The detection end of 25 is rubbed, resulting in the problem that the detection head 25 is damaged due to friction. When the detection head 25 is needed for detection, the pipeline is pulled back (it should be noted that when detecting the point of the pipeline, the pipeline needs to be pushed forward a certain distance to ensure that the point of the pipeline is below the detection head 25 when the pipeline is pulled back). The pipeline drives the lower roller 27 and the upper roller 29 to rotate in the opposite direction. The upper roller 29 drives the L-shaped column 42 to rotate in the opposite direction. The L-shaped column 42 pushes the L-shaped through-groove plate 41 to move downward along the inner wall of the U-shaped slide plate 26. The L-shaped through-groove plate 41 drives the U-shaped lifting plate 43 to move downward. The U-shaped lifting plate 43 no longer pushes the pressure plate 24 to lift the detection head 25. Under the action of the spring force corresponding to the pressure plate 24, the pressure plate 24 drives the detection head 25 to press on the top of the pipeline again.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An ultrasonic detection device for a pressure pipeline, comprising a device body, characterized in that: The top of the equipment body is fixed with a detection device, which includes two U-shaped slide plates fixed on both sides of the equipment body, a U-shaped frame fixed in the middle of the equipment body, and two fixed frames fixed on the top of the equipment body and located between the U-shaped slide plates and the U-shaped frames. A lower roller is rotatably installed between the inner walls below the U-shaped slide plates, and sliders are slidably installed inside the slides on both sides of the U-shaped slide plate, and a spring is provided between the slider and the inner wall of the slide of the U-shaped slide plate. An upper roller is rotatably installed between the two sliders. An ultrasonic non-destructive testing device is embedded in the top of the U-shaped frame. A positioning rod is vertically penetrated and slidably installed on the top of the U-shaped frame, and a pressure plate is fixed between the bottoms of the two positioning rods. The cam is fixed on the upper part of the U-shaped frame, and the cam is fixed on the upper part of the U-shaped frame. The cam is fixed on the upper part of the U-shaped frame, and the cam is fixed on the upper part of the U-shaped frame. The cam is fixed on the upper part of the U-shaped frame. The cam is fixed on the upper part of the U-shaped frame. A smearing device is provided at the front U-shaped chute plate, which includes a coupling agent box. The coupling agent box is fixed at the outer wall of the front U-shaped chute plate. The rotating rod passes through the outer wall of the coupling agent box. A round frame is fixed to the outside of the rotating rod, and the round frame is located inside the coupling agent box. A sponge ring is fixed to the outside of the round frame.

2. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The two L-shaped through-groove plates are both in contact with the top of the rotating shaft of the upper rotating roller, and the top of the U-shaped lifting plate is in contact with the bottom of the pressing plate.

3. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The detection head is electrically connected to the ultrasonic nondestructive testing equipment, and an inclined rod is fixed on the front side of the pressure plate.

4. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The top surface of the rubber roller and the top of the concave surface of the lower rotating roller are on the same horizontal plane, and the bottom surface of the pressure plate and the bottom of the concave surface of the upper rotating roller are on the same horizontal plane.

5. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The top surface of the sponge ring is three centimeters higher than the top surface of the rubber roller.

6. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The smearing device also includes a liquid receiving box, an L-shaped frame, two inclined tubes, and two scrapers. The L-shaped frame is fixed to the outer wall of the fixed frame on the front side, the liquid receiving box is fixed to the top of the L-shaped frame, and the liquid receiving box is sleeved on the outside of the rubber roller. The two inclined tubes are fixed between the liquid receiving box and the coupling agent box, and the two scrapers are respectively fixed on both sides of the inner wall of the liquid receiving box.

7. The ultrasonic detection device for pressure pipes according to claim 6, characterized in that: The two inclined tubes are evenly inclined, and the two scrapers are in contact with the outer wall of the rubber roller.

8. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The smearing device also includes an arc block ring, an elastic telescopic rod, an L-shaped connecting rod, a knocking column, and a resistance rod. The arc block ring is fixed to the outer wall of the rotating rod, the fixed end of the elastic telescopic rod is fixed to the outer wall of the L-shaped frame, the L-shaped connecting rod is fixed to the bottom of the telescopic end of the elastic telescopic rod, the knocking column is fixed to the top of the vertical support rod of the L-shaped connecting rod, and the resistance rod is fixed to the top of the horizontal support rod of the L-shaped connecting rod.

9. The ultrasonic detection device for pressure pipes according to claim 8, characterized in that: A plurality of arc blocks are fixed on the outside of the arc block ring, and the top of the resistance rod is arranged in a semicircular shape, and the semicircular shape of the resistance rod is located on the arc block movement trajectory of the arc block ring.

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