Ultrasonic detection equipment for pressure pipeline

Abstract

The invention discloses ultrasonic testing equipment for a pressure pipeline, and relates to the technical field of ultrasonic nondestructive testing equipment. The device comprises a device body, a detection device is fixed to the top of the device body, and the detection device comprises two U-shaped sliding groove plates fixed to the two sides of the device body respectively, a U-shaped frame fixed to the middle of the device body and two fixing frames fixed to the top of the device body and located between the U-shaped sliding groove plates and the U-shaped frame. A lower rotating roller is rotatably installed between the inner walls of the lower portion of the U-shaped sliding groove plate, sliding blocks are slidably installed in sliding grooves in the two sides of the U-shaped sliding groove plate, springs are arranged between the sliding blocks and the inner walls of the sliding grooves of the U-shaped sliding groove plate, and an upper rotating roller is rotatably installed between the two sliding blocks. Through the arrangement of the detection device, the lower rotating roller, the upper rotating roller, the pressing plate, the detection head, the rotating rod and the rubber roller are matched to drive the pipeline to rotate, so that the detection head can detect the pipeline in all directions.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic non-destructive testing equipment, and particularly to an ultrasonic testing equipment for pressure pipelines. Background Art

[0002] Ultrasonic non-destructive testing equipment uses ultrasonic technology to detect internal defects in pipelines, such as cracks, corrosion, etc. By transmitting and receiving ultrasonic signals, the equipment can accurately evaluate the structural integrity of the pipeline and ensure its safe operation. This equipment is widely used in pipeline maintenance and detection in industries such as petroleum, natural gas, and electricity.

[0003] A Chinese patent with the patent publication number CN222689703U discloses an ultrasonic non-destructive testing equipment for pipeline crack detection, which relates to the technical field of pipeline crack detection. This patent includes a chassis, and a conveying mechanism is fixedly arranged at the upper end of the chassis. The conveying mechanism is used to convey the pipeline. Two brackets are fixedly arranged at the upper end of the conveying mechanism. A detection mechanism cooperating with the conveying mechanism is jointly arranged on one side of the opposite surfaces of the two brackets. The detection mechanism is used to detect the pipeline. The detection mechanism includes a detection plate. A cylinder is arranged below the detection plate. The output end of the cylinder is fixedly provided with a moving plate. A push rod is fixedly arranged on one side of the moving plate. A rotating plate is arranged on the outer surface of the push rod. Through the detection mechanism, the ultrasonic non-destructive testing equipment can well scan and detect the surface of the pipeline, and through the conveying mechanism, the ultrasonic non-destructive testing equipment can well convey the pipeline.

[0004] However, the current ultrasonic testing equipment has the following problems: When the ultrasonic testing equipment detects the pipeline, the detection head of the ultrasonic testing equipment is not convenient for detecting the pipeline in all directions, which will cause the ultrasonic signal to not be fully reflected or penetrate all parts of the pipeline, and the accuracy and integrity of the pipeline detection result will be affected, and all defects in the pipeline cannot be found. Therefore, we propose an ultrasonic testing equipment for pressure pipelines. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an ultrasonic testing equipment for pressure pipelines, which solves the problems put forward in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An ultrasonic detection device for a pressure pipeline, comprising a device main body, a detection device is fixed on the top of the device main body, the detection device includes two U-shaped chute plates respectively fixed on both sides of the device main body, a U-shaped frame fixed in the middle of the device main body, and two fixed frames fixed on the top of the device main body and located between the U-shaped chute plates and the U-shaped frame. A lower rotating roller is rotatably installed between the inner walls of the lower part of the U-shaped chute plate. Sliders are slidably installed in the chute interiors on both sides of the U-shaped chute plate, and springs are provided between the sliders and the chute inner walls of the U-shaped chute plate. An upper rotating 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 in the top of the U-shaped frame. A pressing plate is fixed between the bottoms of the two positioning rods, and a spring is provided between the pressing plate and the U-shaped frame. A detection head is penetrated and fixed on the top of the pressing plate, and the detection head is electrically connected to the ultrasonic non-destructive testing device. 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 on the outside of the rotating rod. The top surface of the rubber roller is on the same horizontal plane as the top of the concave surface of the lower rotating roller. The bottom surface of the pressing plate is on the same horizontal plane as the bottom of the concave surface of the upper rotating roller. Place the pipeline to be detected between the lower rotating roller and the upper rotating roller, and make the pressing plate rest on the pipeline. Under the elastic force of the spring corresponding to the pressing plate, the pressing plate drives the detection head to closely adhere to the outer wall of the pipeline. Start the ultrasonic non-destructive testing device, and the ultrasonic non-destructive testing device can detect the internal defects of the pipeline through the detection head. At the same time, drive the rotating rod to rotate through the motor, and the rotating rod drives the rubber roller to rotate. Under the frictional force between the rubber roller and the pipeline, the rubber roller drives the pipeline to rotate.

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

[0008] According to the above technical solution, a coating device is provided at the front side U-shaped chute plate. The coating device includes a coupling agent tank, the coupling agent tank is fixed on the outer wall of the front side U-shaped chute plate, the rotating rod penetrates the outer wall of the coupling agent tank, a circular frame is fixed on the outside of the rotating rod, and the circular frame is located inside the coupling agent tank. A sponge ring is fixed on the outside of the circular frame. The top surface of the sponge ring is three centimeters higher than the top surface of the rubber roller. Before pipeline detection, it is necessary to apply coupling agent to the detection part of the pipeline. When the rotating rod rotates, it will drive the sponge ring to rotate through the circular frame, and the sponge ring drives the coupling agent in the coupling agent tank to be evenly coated on the surface of the pipeline.

[0009] According to the above technical solution, the coating device further includes a liquid receiving box, an L-shaped frame, two inclined pipes, and two scraping plates. The L-shaped frame is fixed to the outer wall of the front fixed frame. The liquid receiving box is fixed to the top of the L-shaped frame and is sleeved outside the rubber roller. The two inclined pipes are fixed between the liquid receiving box and the coupling agent tank. The two scraping plates are respectively fixed on both sides of the inner wall of the liquid receiving box. The two inclined pipes are arranged with uniform inclined surfaces. Both scraping plates are in contact with the outer wall of the rubber roller. When the excess coupling agent on the pipe surface adheres to the rubber roller, the scraping plates 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 tank through the inclined pipes.

[0010] According to the above technical solution, the coating device further includes an arc block ring, an elastic telescopic rod, an L-shaped connecting rod, a knocking column, and a resisting 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. The resisting rod is fixed to the top of the horizontal support rod of the L-shaped connecting rod. A number of arc blocks are fixed to the outside of the arc block ring. The top of the resisting rod is arranged in a semi-circular shape, and the semi-circular shape of the resisting rod is located on the movement track of the arc blocks of the arc block ring. When the rotating rod rotates, it will drive the arc block ring to rotate. The arc blocks of the arc block ring push the semi-circular shape of the resisting rod to drive the resisting rod to move downward. The resisting 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 to move away from the liquid receiving box. When the arc blocks of the arc block ring no longer push the semi-circular shape of the resisting 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. The L-shaped connecting rod drives the knocking column to knock on the liquid receiving box, and the liquid receiving box vibrates.

[0011] According to the above technical solution, an anti-wear device is provided at the front U-shaped chute plate. The anti-wear device includes a U-shaped lifting plate, two L-shaped through groove plates, and two L-shaped column rods. The two L-shaped through groove plates are respectively slidably installed on both sides of the inner wall of the front U-shaped chute plate, and both L-shaped through groove plates are in contact with the top of the rotating shaft of the upper roller. Through grooves are opened on the outer walls of the two L-shaped through groove plates. One ends of the two L-shaped column rods are fixed to the outer wall of the rotating shaft of the front upper roller, and the other ends of the two L-shaped column rods are respectively slidably installed inside the through grooves of the two L-shaped through groove plates. The U-shaped lifting plate is fixed between the bottoms of the two L-shaped through groove plates, and the top of the U-shaped lifting plate is in contact with the bottom of the pressing plate. When it is necessary to measure the point of the next section of the pipe, the pipe is pushed to move. At this time, the pipe drives the lower roller and the upper roller to rotate. When the upper roller rotates, the upper roller drives the L-shaped column rod to rotate. The L-shaped column rod slides along the inside of the through groove of the L-shaped through groove plate, and the L-shaped column rod pushes the L-shaped through groove plate to move upward along the inner wall of the U-shaped chute plate. The L-shaped through groove plate drives the U-shaped lifting plate to move upward. The U-shaped lifting plate pushes the pressing plate to lift the detection head.

[0012] The present invention provides an ultrasonic testing device for pressure pipelines, having the following beneficial effects: (1) Through the setting of the detection device, the lower rotating roller, upper rotating roller, pressing plate, detection head, rotating rod, and 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 rotating roller and the upper rotating roller at the front side, the pipeline will contact the inclined surface of the inclined rod, and the pipeline pushes the inclined surface of the inclined rod to drive the pressing plate to move upward until the pressing plate fits the top surface of the pipeline. Through the setting of the inclined rod, the pressing plate can adaptively drive the detection head to fit pipelines of different models and sizes.

[0013] (2) Through the setting of the coating device, the rotating rod and circular frame cooperate to drive the sponge ring to evenly coat the coupling agent in the coupling agent tank on the surface of the pipeline, which can reduce the intervention of operators during the detection process. Coating the coupling agent can reduce signal loss caused by air or other media, ensuring that ultrasonic signals can smoothly propagate into the pipeline; at the same time, 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 tank through the inclined pipe, which can effectively recover the coupling agent. This recovery mechanism reduces the waste of coupling agent, can be reused, reduces the operating cost and resource waste. Especially during a long-term detection process, a large amount of coupling agent can be saved. At the same time, scraping off the excess coupling agent can ensure that the friction between the rubber roller and the pipeline is always stable, thus avoiding detection errors caused by uneven friction between the rubber roller and the pipeline; at the same time, the rotating rod, arc block ring, resisting rod, L-shaped connecting rod, and elastic telescopic rod cooperate to drive the knocking column to knock on the liquid receiving box, and the liquid receiving box vibrates, which can help the coupling agent flow more smoothly into the coupling agent tank through the inclined pipe. Vibration can increase the fluidity of the liquid, reduce the resistance of the coupling agent in the pipeline, and thus accelerate the recovery process of the coupling agent. At the same time, the vibration of the liquid receiving box helps to reduce the adhesion of the coupling agent on the scraper and the rubber roller, enabling the scraper to more effectively scrape off the excess coupling agent from the surface of the rubber roller.

[0014] (3) Through the setting of the anti-wear device, the lower rotating roller, upper rotating roller, L-shaped column rod, and L-shaped through groove plate cooperate to drive the U-shaped lifting plate to move upward, and the U-shaped lifting plate pushes the pressing plate to lift the detection head, thus avoiding the problem that the pipeline will rub against the detection end of the detection head during movement, resulting in damage to the detection head due to friction. Description of the Drawings

[0015] Figure 1 Schematic diagram of the whole of the present invention Figure 1 ; Figure 2 Schematic diagram of the whole of the present invention Figure 2 ; Figure 3 Schematic diagram of the detection device of the present invention; Figure 4 Partial cross-sectional schematic diagram of the coating device of the present invention; Figure 5 Partial structural schematic of the coating device of the present invention Figure 1 ; Figure 6 Partial structural schematic of the coating device of the present invention Figure 2 ; Figure 7 Schematic diagram of the anti-wear device of the present invention.

[0016] In the figure: 1, equipment main 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 chute plate; 27, lower rotating roller; 28, slider; 29, upper rotating roller; 210, inclined rod; 211, fixing frame; 212, rotating rod; 213, rubber roller; 3, coating device; 31, coupling agent box; 32, circular frame; 33, sponge ring; 34, liquid receiving box; 35, L-shaped frame; 36, inclined pipe; 37, scraping plate; 38, arc-shaped block ring; 39, elastic telescopic rod; 310, L-shaped connecting rod; 311, knocking column; 312, resisting rod; 4, anti-wear device; 41, L-shaped through groove plate; 42, L-shaped column rod; 43, U-shaped lifting plate. Specific embodiments

[0017] 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.

[0018] Please refer to Figure 1 - Figure 7, the present invention provides a technical solution: an ultrasonic detection device for pressure pipelines, including a device main body 1, a detection device 2 is fixed on the top of the device main body 1. The detection device 2 includes two U-shaped chute plates 26 respectively fixed on both sides of the device main body 1, a U-shaped frame 21 fixed in the middle of the device main body 1, and two fixing frames 211 fixed on the top of the device main body 1 and located between the U-shaped chute plates 26 and the U-shaped frame 21. A lower rotating roller 27 is rotatably installed between the inner walls of the lower part of the U-shaped chute plate 26. Sliders 28 are slidably installed in the chute interiors on both sides of the U-shaped chute plate 26, and springs are provided between the sliders 28 and the chute inner walls of the U-shaped chute plate 26. An upper rotating 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. A positioning rod 22 is vertically penetrated and slidably installed in the top of the U-shaped frame 21. A pressing plate 24 is fixed between the bottoms of the two positioning rods 22, and a spring is provided between the pressing plate 24 and the U-shaped frame 21. A detection head 25 is penetrated and fixed on the top of the pressing plate 24, and the detection head 25 is electrically connected to the ultrasonic non-destructive testing device 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 on the outer part of the rotating rod 212. The top surface of the rubber roller 213 is at the same horizontal plane as the top of the concave surface of the lower rotating roller 27. The bottom surface of the pressing plate 24 is at the same horizontal plane as the bottom of the concave surface of the upper rotating roller 29. Through the setting of the above structure, the rotating rod 212 drives the rubber roller 213 to rotate. Under the frictional force 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.

[0019] A diagonal rod 210 is fixed on the front side of the pressing plate 24. Through the setting of the diagonal rod 210, the pressing plate 24 can adaptively drive the detection head 25 to fit pipelines of different models and sizes.

[0020] A coating device 3 is provided at the front side U-shaped chute plate 26. The coating device 3 includes a couplant tank 31, and the couplant tank 31 is fixed on the outer wall of the front side U-shaped chute plate 26. The rotating rod 212 penetrates the outer wall of the couplant tank 31. A circular frame 32 is fixed on the outer part of the rotating rod 212, and the circular frame 32 is located inside the couplant tank 31. A sponge ring 33 is fixed on the outer part of the circular 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 setting of the above structure, the sponge ring 33 drives the couplant in the couplant tank 31 to be evenly coated on the surface of the pipeline, thereby reducing the intervention of the operator during the detection process. Coating the couplant can reduce signal loss caused by air or other media, ensuring that the ultrasonic signal can smoothly propagate into the pipeline interior.

[0021] The coating device 3 further includes a liquid receiving box 34, an L-shaped frame 35, two inclined tubes 36, and two scraping plates 37. The L-shaped frame 35 is fixed to the outer wall of the front fixed frame 211. The liquid receiving box 34 is fixed to the top of the L-shaped frame 35, and the liquid receiving box 34 is sleeved outside the rubber roller 213. The two inclined tubes 36 are fixed between the liquid receiving box 34 and the coupling agent tank 31. The two scraping plates 37 are respectively fixed to both sides of the inner wall of the liquid receiving box 34. The two inclined tubes 36 are arranged with uniform inclined surfaces. Both scraping plates 37 are in contact with the outer wall of the rubber roller 213. Through the setting of the above structure, the coupling agent in the liquid receiving box 34 will flow into the coupling agent tank 31 through the inclined tubes 36, so that the coupling agent can be effectively recovered. This recovery mechanism reduces the waste of the coupling agent, can be reused, reduces the operating cost and resource waste. Especially during a long-term detection process, a large amount of coupling agent can be saved. At the same time, scraping off the excess coupling agent can ensure that the friction between the rubber roller 213 and the pipeline is always stable, thus avoiding detection errors caused by uneven friction between the rubber roller 213 and the pipeline.

[0022] The coating device 3 further includes an arc block ring 38, an elastic telescopic rod 39, an L-shaped connecting rod 310, a knocking column 311, and a resisting 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 rod of the L-shaped connecting rod 310. The resisting rod 312 is fixed to the top of the horizontal rod of the L-shaped connecting rod 310. A number of arc blocks are fixed to the outside of the arc block ring 38. The top of the resisting rod 312 is semicircularly arranged, and the semicircle of the resisting rod 312 is located on the movement track of the arc blocks of the arc block ring 38. Through the setting of the above structure, the knocking column 311 knocks on the liquid receiving box 34, and the liquid receiving box 34 vibrates, which can help the coupling agent flow more smoothly into the coupling agent tank 31 through the inclined tubes 36. Vibration can increase the fluidity of the liquid and reduce the resistance of the coupling agent in the pipeline, thus accelerating the recovery process of the coupling agent. At the same time, the vibration of the liquid receiving box 34 helps to reduce the adhesion of the coupling agent on the scraping plates 37 and the rubber roller 213, so that the scraping plates 37 can more effectively scrape off the excess coupling agent from the surface of the rubber roller 213.

[0023] An anti-wear device 4 is provided at the front U-shaped chute plate 26. The anti-wear device 4 includes a U-shaped lifting plate 43, two L-shaped through groove plates 41, and two L-shaped column rods 42. The two L-shaped through groove plates 41 are respectively slidably installed on both sides of the inner wall of the front U-shaped chute plate 26, and both L-shaped through groove plates 41 are in contact with the top of the rotating shaft of the upper roller 29. Through grooves are provided on the outer walls of the two L-shaped through groove plates 41. One end of each of the two L-shaped column rods 42 is fixed to the outer wall of the rotating shaft of the front upper roller 29, and the other ends of the two L-shaped column rods 42 are respectively slidably installed inside the through grooves of the two L-shaped through groove plates 41. 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 is in contact with the bottom of the pressing plate 24. Through the setting of the above structure, the upper roller 29 drives the L-shaped column rod 42 to push the L-shaped through groove plate 41 to move upward along the inner wall of the U-shaped chute plate 26. The L-shaped through groove plate 41 drives the U-shaped lifting plate 43 to move upward, and the U-shaped lifting plate 43 pushes the pressing 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 movement, resulting in damage to the detection head 25 due to friction.

[0024] During use, place the pipeline to be detected between the lower roller 27 and the upper roller 29, and make the pressing plate 24 rest on the pipeline. Under the action of the spring force corresponding to the pressing plate 24, the pressing plate 24 drives the detection head 25 to closely adhere to the outer wall of the pipeline. Start the ultrasonic non-destructive testing device 23, and the ultrasonic non-destructive testing device 23 can detect the internal defects of the pipeline through the detection head 25. At the same time, drive the rotating rod 212 to rotate through the motor, and the rotating rod 212 drives the rubber roller 213 to rotate. Under the action of the friction force 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; at the same time, when the pipeline passes through between the front lower roller 27 and the upper roller 29, the pipeline will contact the inclined surface of the inclined rod 210, and the pipeline pushes the inclined surface of the inclined rod 210 to drive the pressing plate 24 to move upward until the pressing plate 24 fits the top surface of the pipeline. Through the setting of the inclined rod 210, the pressing plate 24 can adaptively drive the detection head 25 to fit pipelines of different models and sizes.

[0025] 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 round frame 32, and the sponge ring 33 drives the coupling agent in the coupling agent box 31 to be evenly applied to the surface of the pipeline, so as to reduce the intervention of the operator during the inspection process. Applying the coupling agent can reduce the signal loss caused by air or other media, and ensure that the ultrasonic signal can be smoothly transmitted to the inside of the pipeline; when the 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, and the coupling agent in the liquid receiving box 34 will flow into the coupling agent box 31 through the inclined tube 36, so that the coupling agent can be effectively recovered. This recovery mechanism reduces the waste of coupling agent, which can be reused, reducing operating costs and resource waste. In particular, a large amount of coupling agent can be saved during a long inspection process. At the same time, scraping off the excess coupling agent can ensure 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. 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, the L-shaped connecting rod 310 drives the knocking column 311 to knock the liquid receiving box 34, and the liquid receiving box 34 vibrates, thereby helping the coupling agent to flow more smoothly into the coupling agent box 31 through the inclined tube 36. The vibration can increase the fluidity of the liquid and reduce the resistance of the coupling agent in the pipeline, thereby accelerating the recovery process of the coupling agent. At the same time, the vibration of the liquid receiving box 34 helps to reduce the adhesion of the coupling agent on the scraper 37 and the rubber roller 213, so that the scraper 37 can more effectively scrape off the excess coupling agent from the surface of the rubber roller 213.

[0026] When it is necessary to measure the points 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 rod 42 to rotate (it should be noted that when the upper roller 29 drives the L-shaped column rod 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 rod 42 slides along the inside of the through groove of the L-shaped through groove plate 41, and the L-shaped column rod 42 pushes the L-shaped through groove plate 41 to move upward along the inner wall of the U-shaped chute 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 pressing plate 24 to lift the detection head 25, thus avoiding the problem that the pipeline will rub against the detection end of the detection head 25 during the movement process, resulting in damage to the detection head 25 due to friction. When it is necessary to detect with the detection head 25, the pipeline is pulled back (it should be noted that when detecting the points of the pipeline, the pipeline needs to be pushed forward a certain distance to ensure that when the pipeline is pulled back, the points of the pipeline are below the detection head 25). The pipeline drives the lower roller 27 and the upper roller 29 to rotate in the reverse direction. The upper roller 29 drives the L-shaped column rod 42 to rotate in the reverse direction. The L-shaped column rod 42 pushes the L-shaped through groove plate 41 to move downward along the inner wall of the U-shaped chute 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 pressing plate 24 to lift the detection head 25. Under the action of the spring force corresponding to the pressing plate 24, the pressing plate 24 drives the detection head 25 to press on the top of the pipeline again.

[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An ultrasonic detection device for a pressure pipeline, comprising a device body, characterized in that: A detection device is fixed on the top of the equipment body, and the detection device includes two U-shaped slide plates respectively 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 plate and the U-shaped frame. A lower roller is rotatably installed between the inner walls below the U-shaped slide plate, and sliders are slidably installed inside the slide grooves on both sides of the U-shaped slide plate, and a spring is arranged between the slider and the inner wall of the slide groove of the U-shaped slide plate, and 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, and 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. A spring is provided between the pressure plate and the U-shaped frame, a detection head is passed through and fixed on the top of the pressure plate, 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 on the outside of the rotating rod, and an anti-wear device is provided at the front U-shaped slide plate, the anti-wear device includes two L-shaped through-slot plates respectively slidably installed on both sides of the inner wall of the U-shaped slide plate on the front side, and two L-shaped columns, through slots are opened on the outer walls of the two L-shaped through-slot plates, one end of the two L-shaped column rods are fixed on the outer wall of the upper rotating roller shaft on the front side, and the other ends of the two L-shaped column rods are respectively slidably installed in the through slots of the two L-shaped through-slot plates, and a U-shaped lifting plate is fixed between the bottoms of the two L-shaped through-slot plates.

2. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: The two L-shaped through-slot 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 pressing plate.

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

5. The ultrasonic detection device for pressure pipes according to claim 1, characterized in that: A coating device is provided at the front U-shaped slide plate, and the coating device includes a coupling agent box, which is fixed at the outer wall of the front U-shaped slide plate, and a 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, and a sponge ring is fixed to the outside of the round frame.

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

7. The ultrasonic detection device for pressure pipes according to claim 5, characterized in that: The coating 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.

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

9. The ultrasonic detection device for pressure pipes according to claim 5, 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.

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

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