Pressure pipeline compression resistance detection equipment

Abstract

The invention discloses pressure pipeline compression resistance detection equipment, and belongs to the technical field of pipeline detection, the pressure pipeline compression resistance detection equipment comprises a main body mechanism used for conveying a pressure pipeline, and the main body mechanism is provided with an air pressure mechanism used for injecting high-pressure gas into the pressure pipeline; the air pressure mechanism is provided with a detection mechanism used for detecting the compression resistance of the pressure pipeline. According to the invention, the to-be-detected pipeline is automatically conveyed through the conveying belt, and the linkage control of the air pressure mechanism and the detection mechanism is combined, so that the automatic positioning, sealed pressurizing and rotary detection of the pipeline are realized, and the detection efficiency is remarkably improved; by adopting a mode of driving the detection probe in a multi-swivel linkage manner and matching with the rotation of the pipeline, the probe can spirally scan along the outer wall of the pipeline, dead-corner-free detection is ensured, the probe is always attached to the pipe wall by attaching to the spring, and the sensitivity and accuracy of defect identification are improved; the top of the detection mechanism adopts a conical surface design and is matched with an inner spring for buffering, so that the detection mechanism can adapt to the ends of pipelines with different pipe diameters, and the high-pressure gas sealing performance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and in particular to a device for detecting the pressure resistance of a pressure pipeline. Background Art

[0002] Pressure pipelines are widely used in the fields of petroleum, chemical industry, natural gas, etc. Their pressure resistance directly affects the safe operation of the equipment. During the manufacturing and use of pressure pipelines, pressure pipelines may deform or rupture due to material defects, poor welding or long-term pressure, so they need to be strictly tested for their pressure resistance. Traditional pressure pipeline inspection methods mainly include manual visual inspection, water pressure test or static air pressure test, but these methods have the following shortcomings: manual inspection relies on experience and it is difficult to achieve automated continuous inspection, which affects production efficiency; static testing cannot simulate dynamic working conditions and it is difficult to fully cover the defect detection of the outer wall of the pipeline; existing equipment usually requires manual adjustment of the pipeline position and detection probe, which is complicated to operate and difficult to adapt to large-scale inspection needs; the sealing structure of traditional air pressure testing is complex and is prone to leakage due to pipeline size errors, affecting test accuracy.

[0003] To address these issues, existing technologies employ methods such as conveyor belts to transport pipelines and robotic arms to adjust the position of test probes to test pipeline compressive performance. However, these devices still suffer from complex structures, limited test coverage, and poor adaptability. In particular, for pipelines of varying diameters, there is still room for improvement in the fit of the test probes and synchronous motion control. Therefore, there is an urgent need for a highly automated, comprehensive, and adaptable pressure pipeline compressive performance testing device to improve test efficiency and accuracy and ensure safe pipeline operation. Summary of the Invention

[0004] In response to the above technical problems, the technical solution adopted by the present invention is: a pressure pipeline pressure resistance performance testing equipment, including a main body mechanism for conveying the pressure pipeline, the main body mechanism includes a frame, side frames are fixedly installed on both sides of the frame, and side rails are fixedly installed on the side frames. The main body mechanism is provided with a pneumatic mechanism for injecting high-pressure gas into the pressure pipeline, the pneumatic mechanism includes a lifting frame, and the pneumatic mechanism is provided with a testing mechanism for testing the pressure resistance performance of the pressure pipeline.

[0005] Furthermore, the main mechanism includes two transmission shafts rotatably mounted on the frame, two conveying wheels fixedly mounted on the transmission shafts, a conveyor belt wrapped around the two conveying wheels, a plurality of placement supports provided on the conveyor belt, and a motor for driving the transmission shafts to rotate provided on the frame.

[0006] The pressure pipeline is placed between the placement trays, and the motor drives the transmission shaft and the conveying wheel to rotate, thereby driving the conveyor belt to move. The pressure pipeline is transported through the conveyor belt and the pressure pipeline to be tested is transported to the testing mechanism.

[0007] Furthermore, the pneumatic mechanism includes two docking frames slidably mounted on the side rails, an air pump is fixedly mounted on the docking frames, a mandrel is rotatably mounted inside the docking frames, an air channel is provided inside the mandrel, the air channel is connected to the air pump, and the end of the mandrel is a conical surface.

[0008] Furthermore, a rotating gear is fixedly installed on the mandrel, a rotating tube motor is fixedly installed on the docking frame, a motor gear is fixedly installed on the motor shaft of the rotating tube motor, the motor gear is engaged with the rotating gear, a ball bearing is rotatably installed in the docking frame, and an inner spring is provided between the ball bearing and the mandrel.

[0009] Furthermore, a transverse guide rod and a bottom motor are fixedly mounted on the frame body, a bottom screw rod is fixedly mounted on the motor shaft of the bottom motor, a lower rod is fixedly mounted under the docking frame, an outer rod is rotatably mounted on the lower rod, two transverse sliders are slidably mounted on the transverse guide rod, an active rod, an outer rod and an upper rotating rod are rotatably mounted on the transverse slider, the upper rotating rod is rotatably mounted on the lifting frame, the outer rod is rotatably mounted on the lower rod, a lifting plate is rotatably mounted on the active rod, and a threaded transmission is formed between the lifting plate and the bottom screw rod.

[0010] When the pressure pipe moves between the two docking frames, the bottom motor rotates to drive the bottom screw to rotate, driving the lifting plate to descend, and driving the cross slider to slide inward along the cross guide rod through the active rod, and driving the lifting frame to rise through the upper rotating rod, so that the detection mechanism reaches the bottom of the pressure pipe. At the same time, the cross slider drives the lower rod and the docking frame to move inward along the side track through the outer rod, so that the ram contacts the two ends of the pressure pipe. As the docking frame continues to move inward, the inner spring is compressed, the conical surface of the ram is inserted into the two ends of the pressure pipe, and the ram presses the two ends of the pressure pipe tightly. At this time, the two rams seal the two ends of the pressure pipe, and the air pump fills the pressure pipe with high-pressure gas through the airway.

[0011] After the current fixing frame is fully unfolded, the pipe rotating motor drives the motor gear to rotate, driving the rotating gear and the jack to rotate, and the jack drives the pressure pipe to rotate. The pressure pipe is inspected by the detection probe to detect whether the pressure pipe is deformed.

[0012] Furthermore, the detection mechanism includes a connecting column fixedly mounted on the lifting frame, a front fixing frame and a rear fixing frame fixedly mounted on the connecting column, a motor frame fixedly mounted on the connecting column, a surround motor fixedly mounted on the motor frame, and an output gear fixedly mounted on the motor shaft of the surround motor.

[0013] Furthermore, the detection mechanism is provided with a swivel module, which includes five swivels. Two sliding posts and arc grooves are provided on the swivels. The sliding posts on the swivels are slidably installed in the arc grooves of adjacent swivels. An outer gear ring is fixedly installed on the swivel located next to the front fixed frame, and the outer gear ring is engaged with the output gear.

[0014] Furthermore, two detection seats are fixedly mounted on the rotating ring, detection probes are slidably mounted on the detection seats, and a tightening spring is provided between the detection probes and the detection seats.

[0015] When the lifting frame rises, it drives the detection mechanism to rise, and the swivel reaches the bottom of the pressure pipe. The pressure pipe is concentric with the swivel and rotates around the motor-driven output gear, driving the outer gear ring and the swivel closest to the outer gear ring to rotate. The sliding column on the swivel closest to the outer gear ring slides in the arc groove. When the sliding column moves to the edge of the arc groove, it drives the next swivel to rotate sixty degrees. Similarly, the sliding columns on each swivel slide in the arc groove of the adjacent swivel, thereby driving all the swivels to rotate together. The swivel closest to the outer gear ring rotates three hundred degrees, and the four adjacent swivels rotate two hundred and forty degrees, one hundred and eighty degrees, one hundred and twenty degrees and sixty degrees respectively. The spring is pressed against the detection probe to make it close to the outer wall of the pressure pipe. Cooperating with the rotation of the pressure pipe, the detection probe can perform a comprehensive inspection of the pressure pipe.

[0016] Compared with the prior art, the present invention has the following advantages: (1) The present invention automatically transports the pipeline to be tested by a conveyor belt, and combines the linkage control of the pneumatic mechanism and the detection mechanism to realize automatic positioning, sealing, pressurizing and rotation detection of the pipeline, thereby reducing manual intervention, significantly improving detection efficiency, and being suitable for large-scale continuous production detection needs; (2) The present invention adopts a multi-ring linkage drive detection probe method, which cooperates with the rotation of the pipeline itself, so that the probe can spirally scan along the outer wall of the pipeline to ensure detection without dead angles. At the same time, the spring makes the probe always fit the pipe wall, improving the sensitivity and accuracy of defect identification; (3) The head of the detection mechanism set in the present invention adopts a conical surface design, and cooperates with the internal spring buffer to adapt to the ends of pipelines with different diameters to ensure high-pressure gas sealing. The setting of the ball bearing and the pipe rotating motor enables the pipeline to rotate stably, avoiding the influence of the detection result due to over-tight or over-loose sealing; (4) The present invention realizes the lifting and lowering of the detection mechanism and the synchronous movement of the pneumatic mechanism through the mechanical transmission of the bottom screw, the horizontal slider and the linkage rod, and has strong structural rigidity and precise positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention (delivery state).

[0018] Figure 2 Schematic diagram of the overall structure of the present invention (detection state).

[0019] Figure 3 It is a schematic diagram of the main structure of the present invention.

[0020] Figure 4 Schematic diagram of the pneumatic mechanism structure of the present invention Figure 1 .

[0021] Figure 5 Schematic diagram of the pneumatic mechanism structure of the present invention Figure 2 .

[0022] Figure 6 Schematic diagram of the pneumatic mechanism structure of the present invention Figure 3 .

[0023] Figure 7 Schematic diagram of the detection mechanism structure of the present invention (open state).

[0024] Figure 8 Schematic diagram of the detection mechanism structure of the present invention (encircled state).

[0025] Figure 9 Schematic diagram of the detection mechanism structure of the present invention Figure 2 .

[0026] Figure 10 It is a schematic diagram of the swivel structure of the present invention.

[0027] Reference numerals: 101-frame; 102-side frame; 103-side rail; 104-transmission shaft; 105-conveying wheel; 106-conveying belt; 107-placement support; 201-horizontal guide rod; 202-bottom motor; 203-bottom screw rod; 204-lifting plate; 205-active rod; 206-outer rod; 207-upper rotation rod; 208-lifting frame; 209-docking frame; 210-lower rod; 211-air pump; 212-ball bearing; 213-inner spring; 2 14-head; 215-rotating gear; 216-pipe rotating motor; 217-motor gear; 218-airway; 219-cross slide; 301-connecting column; 302-motor frame; 303-surrounding motor; 304-output gear; 305-front fixing frame; 306-clamping spring; 307-outer gear ring; 308-sliding column; 309-arc chute; 310-swivel; 311-detection seat; 312-detection probe; 313-rear fixing frame; 4-pressure pipe. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example: Reference Figures 1-10A pressure pipeline pressure resistance performance testing device includes a main body mechanism for conveying the pressure pipeline 4, the main body mechanism includes a frame 101, side frames 102 are fixedly installed on both sides of the frame 101, and side rails 103 are fixedly installed on the side frames 102. The main body mechanism is provided with a pneumatic mechanism for injecting high-pressure gas into the pressure pipeline 4, the pneumatic mechanism includes a lifting frame 208, and the pneumatic mechanism is provided with a testing mechanism for testing the pressure resistance performance of the pressure pipeline 4.

[0030] like Figure 3 As shown, the main mechanism includes two transmission shafts 104 rotatably mounted on the frame 101, two conveying wheels 105 are fixedly mounted on the transmission shafts 104, a conveyor belt 106 is wrapped around the two conveying wheels 105, a plurality of placement trays 107 are provided on the conveyor belt 106, and a motor for driving the transmission shaft 104 to rotate is provided on the frame 101.

[0031] The pressure pipe 4 is placed between the placement trays 107, and the motor drives the transmission shaft 104 and the conveying wheel 105 to rotate, thereby driving the conveyor belt 106 to move. The pressure pipe 4 is transported by the conveyor belt 106 and the pressure pipe 4 to be inspected is transported to the inspection mechanism.

[0032] like Figure 4-Figure 6 As shown, the pneumatic mechanism includes two docking frames 209 slidably mounted on the side rails 103, an air pump 211 is fixedly mounted on the docking frames 209, a mandrel 214 is rotatably mounted inside the docking frames 209, an air passage 218 is provided inside the mandrel 214, the air passage 218 is connected to the air pump 211, and the end of the mandrel 214 is a conical surface.

[0033] like Figure 4-Figure 6 As shown, a rotating gear 215 is fixedly mounted on the mandrel 214, a tube rotating motor 216 is fixedly mounted on the docking frame 209, a motor gear 217 is fixedly mounted on the motor shaft of the tube rotating motor 216, the motor gear 217 is engaged with the rotating gear 215, a ball bearing 212 is rotatably mounted in the docking frame 209, and an inner spring 213 is provided between the ball bearing 212 and the mandrel 214.

[0034] like Figure 4-Figure 6 As shown, a transverse guide rod 201 and a bottom motor 202 are fixedly mounted on the frame body 101, a bottom screw rod 203 is fixedly mounted on the motor shaft of the bottom motor 202, a lower rod 210 is fixedly mounted below the docking frame 209, an outer rod 206 is rotatably mounted on the lower rod 210, two transverse sliders 219 are slidably mounted on the transverse guide rod 201, an active rod 205, an outer rod 206 and an upper rotating rod 207 are rotatably mounted on the transverse slider 219, the upper rotating rod 207 is rotatably mounted on the lifting frame 208, the outer rod 206 is rotatably mounted on the lower rod 210, a lifting disk 204 is rotatably mounted on the active rod 205, and a threaded transmission is formed between the lifting disk 204 and the bottom screw rod 203.

[0035] When the pressure pipe 4 moves between the two docking frames 209, the bottom motor 202 rotates to drive the bottom screw rod 203 to rotate, driving the lifting plate 204 to descend, and driving the cross slider 219 to slide inward along the cross guide rod 201 through the active rod 205, and driving the lifting frame 208 to rise through the upper rotating rod 207, so that the detection mechanism reaches the bottom of the pressure pipe 4. At the same time, the cross slider 219 drives the lower rod 210 and the docking frame 209 to move inward along the side track 103 through the outer rod 206, so that the plug 214 contacts the two ends of the pressure pipe 4. As the docking frame 209 continues to move inward, the inner spring 213 is compressed, and the conical surface of the plug 214 is inserted into the two ends of the pressure pipe 4, and the plug 214 presses the two ends of the pressure pipe 4 tightly. At this time, the two plugs 214 seal the two ends of the pressure pipe 4, and the air pump 211 fills the pressure pipe 4 with high-pressure gas through the air channel 218.

[0036] After the current fixing frame 305 is fully unfolded, the pipe rotating motor 216 drives the motor gear 217 to rotate, driving the rotating gear 215 and the plug 214 to rotate, and the plug 214 drives the pressure pipe 4 to rotate. The pressure pipe 4 is inspected by the detection probe 312 to detect whether the pressure pipe 4 is deformed.

[0037] like Figure 7-10 As shown, the detection mechanism includes a connecting column 301 fixedly mounted on the lifting frame 208, a front fixing frame 305 and a rear fixing frame 313 fixedly mounted on the connecting column 301, a motor frame 302 fixedly mounted on the connecting column 301, a surround motor 303 fixedly mounted on the motor frame 302, and an output gear 304 fixedly mounted on the motor shaft of the surround motor 303.

[0038] like Figure 7-10 As shown, the detection mechanism is provided with a swivel module, which includes five swivels 310. The swivel 310 is provided with two slide posts 308 and arc grooves 309. The slide posts 308 on the swivel 310 are slidably installed in the arc grooves 309 of the adjacent swivels 310. The swivel 310 located next to the front fixed frame 305 is fixedly installed with an outer gear ring 307, which is engaged with the output gear 304.

[0039] like Figure 7-10 As shown, two detection seats 311 are fixedly mounted on the rotating ring 310 , detection probes 312 are slidably mounted on the detection seats 311 , and a clamping spring 306 is provided between the detection probe 312 and the detection seat 311 .

[0040] When the lifting frame 208 rises, it drives the detection mechanism to rise, and the swivel 310 reaches the bottom of the pressure pipe 4. The pressure pipe 4 is concentric with the swivel 310 and rotates around the motor 303 to drive the output gear 304 to rotate, driving the outer gear ring 307 and the swivel 310 closest to the outer gear ring 307 to rotate. The sliding post 308 on the swivel 310 closest to the outer gear ring 307 slides in the arc groove 309. When the sliding post 308 moves to the edge of the arc groove 309, it drives the next swivel 310 to rotate sixty degrees. The sliding post 308 on each rotating ring 310 slides in the arc groove 309 of the adjacent rotating ring 310, thereby driving all the rotating rings 310 to rotate together. The rotating ring 310 closest to the outer gear ring 307 rotates 300 degrees, and the four adjacent rotating rings 310 rotate 240 degrees, 180 degrees, 120 degrees and 60 degrees respectively. The spring 306 is pressed against the detection probe 312 to make it close to the outer wall of the pressure pipe 4. In conjunction with the rotation of the pressure pipe 4, the detection probe 312 can perform a comprehensive inspection of the pressure pipe 4.

[0041] The working principle of the pressure pipeline pressure resistance performance testing equipment disclosed in the present invention is: the pressure pipeline 4 is placed between the placement supports 107, the motor drives the transmission shaft 104 and the conveying wheel 105 to rotate, thereby driving the conveyor belt 106 to move, and the pressure pipeline 4 is transported by the conveyor belt 106 to transport the pressure pipeline 4 to be tested to the testing mechanism. When the pressure pipe 4 moves between the two docking frames 209, the bottom motor 202 rotates to drive the bottom screw rod 203 to rotate, driving the lifting plate 204 to descend, and driving the cross slider 219 to slide inward along the cross guide rod 201 through the active rod 205, and driving the lifting frame 208 to rise through the upper rotating rod 207, so that the detection mechanism reaches the bottom of the pressure pipe 4. At the same time, the cross slider 219 drives the lower rod 210 and the docking frame 209 to move inward along the side track 103 through the outer rod 206, so that the plug 214 contacts the two ends of the pressure pipe 4. As the docking frame 209 continues to move inward, the inner spring 213 is compressed, and the conical surface of the plug 214 is inserted into the two ends of the pressure pipe 4, and the plug 214 presses the two ends of the pressure pipe 4 tightly. At this time, the two plugs 214 seal the two ends of the pressure pipe 4, and the air pump 211 fills the pressure pipe 4 with high-pressure gas through the air channel 218. When the lifting frame 208 rises, it drives the detection mechanism to rise, and the swivel 310 reaches the bottom of the pressure pipe 4. The pressure pipe 4 is concentric with the swivel 310 and rotates around the motor 303 to drive the output gear 304 to rotate, driving the outer gear ring 307 and the swivel 310 closest to the outer gear ring 307 to rotate. The sliding column 308 on the swivel 310 closest to the outer gear ring 307 slides in the arc groove 309. When the sliding column 308 moves to the edge of the arc groove 309, it drives the next swivel 310 to rotate sixty degrees. Similarly, the sliding columns 308 on each swivel 310 rotate sixty degrees on the arc slide of the adjacent swivel 310. The swivel ring 310 slides in the groove 309, thereby driving all the swivel rings 310 to rotate together. The swivel ring 310 closest to the outer gear ring 307 rotates 300 degrees, and the four adjacent swivel rings 310 rotate 240 degrees, 180 degrees, 120 degrees and 60 degrees respectively. The spring 306 is pressed against so that the detection probe 312 is close to the outer wall of the pressure pipe 4. The pipe rotation motor 216 drives the motor gear 217 to rotate, driving the rotating gear 215 and the plug 214 to rotate. The plug 214 drives the pressure pipe 4 to rotate. The pressure pipe 4 is fully inspected by the detection probe 312 to determine whether the pressure pipe 4 is deformed.

[0042] 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 can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A pressure pipe pressure resistance performance testing device, comprising a main body mechanism for conveying pressure pipes (4), characterized in that: The main body mechanism comprises a frame (101), side frames (102) are fixedly mounted on both sides of the frame (101), and side rails (103) are fixedly mounted on the side frames (102). The main body mechanism is provided with a pneumatic mechanism for injecting high-pressure gas into the pressure pipe (4), the pneumatic mechanism comprises a lifting frame (208), and the pneumatic mechanism is provided with a detection mechanism for performing pressure resistance detection on the pressure pipe (4).

2. The pressure pipe pressure resistance testing device according to claim 1, characterized in that: The main mechanism comprises two transmission shafts (104) rotatably mounted on a frame (101), two conveying wheels (105) fixedly mounted on the transmission shafts (104), a conveying belt (106) wound around the two conveying wheels (105), a plurality of placement supports (107) provided on the conveying belt (106), and a motor for driving the transmission shafts (104) to rotate provided on the frame (101).

3. The pressure pipe pressure resistance testing device according to claim 1, characterized in that: The pneumatic mechanism comprises two docking frames (209) slidably mounted on the side rails (103), an air pump (211) being fixedly mounted on the docking frames (209), a mandrel (214) being rotatably mounted in the docking frames (209), an air passage (218) being provided in the mandrel (214), the air passage (218) being in communication with the air pump (211), and an end of the mandrel (214) being a conical surface.

4. The pressure pipe pressure resistance testing device according to claim 3, characterized in that: A rotating gear (215) is fixedly mounted on the mandrel (214), a tube rotating motor (216) is fixedly mounted on the docking frame (209), a motor gear (217) is fixedly mounted on the motor shaft of the tube rotating motor (216), the motor gear (217) is engaged with the rotating gear (215), a ball bearing (212) is rotatably mounted in the docking frame (209), and an inner spring (213) is provided between the ball bearing (212) and the mandrel (214).

5. The pressure pipe pressure resistance testing device according to claim 4, characterized in that: A transverse guide rod (201) and a bottom motor (202) are fixedly mounted on the frame body (101), a bottom screw rod (203) is fixedly mounted on the motor shaft of the bottom motor (202), a lower rod (210) is fixedly mounted below the docking frame (209), an outer rod (206) is rotatably mounted on the lower rod (210), two transverse sliders (219) are slidably mounted on the transverse guide rod (201), an active rod (205), an outer rod (206) and an upper rotating rod (207) are rotatably mounted on the transverse slider (219), the upper rotating rod (207) is rotatably mounted on the lifting frame (208), the outer rod (206) is rotatably mounted on the lower rod (210), a lifting disk (204) is rotatably mounted on the active rod (205), and a threaded transmission is formed between the lifting disk (204) and the bottom screw rod (203).

6. The pressure pipe pressure resistance testing device according to claim 1, characterized in that: The detection mechanism comprises a connecting column (301) fixedly mounted on a lifting frame (208), a front fixing frame (305) and a rear fixing frame (313) fixedly mounted on the connecting column (301), a motor frame (302) fixedly mounted on the connecting column (301), a surrounding motor (303) fixedly mounted on the motor frame (302), and an output gear (304) fixedly mounted on a motor shaft of the surrounding motor (303).

7. The pressure pipe pressure resistance testing device according to claim 6, characterized in that: The detection mechanism is provided with a rotating ring module, which includes five rotating rings (310). The rotating rings (310) are provided with two sliding posts (308) and arc sliding grooves (309). The sliding posts (308) on the rotating rings (310) are slidably installed in the arc sliding grooves (309) of adjacent rotating rings (310). The rotating ring (310) located next to the front fixed frame (305) is fixedly provided with an outer gear ring (307), and the outer gear ring (307) is engaged with the output gear (304).

8. The pressure pipe pressure resistance testing device according to claim 7, characterized in that: Two detection seats (311) are fixedly mounted on the rotating ring (310), a detection probe (312) is slidably mounted on the detection seat (311), and a clamping spring (306) is provided between the detection probe (312) and the detection seat (311).

Images