Intelligent high-pressure hose wear degree detection device and method

Abstract

The present application relates to a kind of intelligent high-pressure hose wear degree detection device and method, containing test bench, electric control roller, straightener and wear degree detection robot.The wear degree detection robot is installed on the bidirectional track on test bench, and its detection part is encased high-pressure hose, the test bench includes motor general control system, data acquisition system and control display system, by setting stress value and translation speed, fixed stress loading to high-pressure hose is realized using electromagnetic loading head, wear degree detection robot is continuously detected along bidirectional track translation, and the deformation of each position and direction of high-pressure hose is continuously collected by displacement sensor, and then the wear degree is judged.The detection process of the present application is continuous and efficient, and the structure is simple, easy to operate, economical and practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical detection equipment, and particularly relates to an intelligent high-pressure hose wear degree detection device and method. BACKGROUND

[0002] Abrasive water jet technology is widely used in the fields of material cutting, rust removal and industrial cleaning, etc. According to the different ways of adding abrasive particles, it is divided into front-mixed abrasive water jet and rear-mixed abrasive water jet. The abrasive particles of the front-mixed abrasive water jet are added before the conversion of the fluid static pressure into the jet dynamic pressure, and the abrasive particles are accelerated by the high-speed static pressure fluid in the pipeline, and finally form an abrasive water jet through a nozzle. Under the same pressure, its cutting and breaking capacity is much higher than that of the rear-mixed abrasive water jet, and the front-mixed abrasive water jet can transport the abrasive water jet to a far field position far away from the pump through a high-pressure hose, and can be used in a special-shaped occasion with a large space limit, such as deep drilling, deep sea cutting, ship bottom rust removal, etc. However, during the transportation of the front-mixed abrasive water jet, the high-pressure hose is eroded by the abrasive particles for a long time, and the inner wall of the high-pressure hose gradually appears damage, cracks, wall thickness reduction and other wear, and even failure and burst, which has a high safety hazard during use. Nowadays, the commonly used wall thickness acoustic wave detection is suitable for materials without deformation such as steel pipes, and the high-pressure hose itself exists deformation and bending during the wall thickness detection process, which leads to inaccurate wall thickness data, and the damage cracks exist under high pressure, and the damage is closed under normal pressure, which is not easy to be detected. In addition, the high-pressure hose is usually long, and efficient and continuous detection is also a problem to be solved. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, provide an intelligent high-pressure hose wear degree detection device and method, use a wear degree detection robot to detect the stress-deformation of the high-pressure hose, judge the damage degree from multiple angles, ensure the safety of the high-pressure hose during use, and the detection process is continuous and efficient, the equipment is simple, and the operation is convenient.

[0004] The present application is achieved by the following technical solutions:

[0005] In a first aspect, the present application provides an intelligent high-pressure hose wear degree detection device, which comprises a test table, an electric control roller, a straightener and a wear degree detection robot.

[0006] Among them:

[0007] A bidirectional track is installed on the test table, and a limiter is arranged at each end of the bidirectional track.

[0008] The electrically controlled roller is mounted on one side of the test bench, extending from the bidirectional track. It secures, winds, and retracts the high-pressure hose at one end. The straightener, located on the other side of the test bench, also extends from the track. It clamps and straightens the hose at the other end. One end of the hose is secured to the electrically controlled roller by a clamping screw, while the other end is held horizontally by the straightener. The straightener is equipped with a dust removal brush. After a test section is completed, the electrically controlled roller rotates, pulling the hose forward steadily and winding the tested hose.

[0009] The wear detection robot is mounted on a bidirectional track and performs continuous testing by moving along it. The robot wraps its detection unit around a high-pressure hose and applies radial stress to the straightened hose using an electromagnetic loading system installed on the detection unit. The robot then translates along the bidirectional track to continuously test the hose. Displacement sensors are installed on the outer side of the electromagnetic loading system's telescopic rod to collect displacement information from various parts of the hose.

[0010] The test bench is also equipped with a motor control system, a data acquisition system, and a display system. The motor control system controls the various motors of the electronically controlled roller and the wear detection robot. The data acquisition system uses the displacement sensor to obtain displacement information detected by the wear detection robot, thereby determining the deformation of the high-pressure hose. The control and display system provides an operation interface and displays the test results. The operation interface allows for translation, rotation (i.e., angle), and stress loading control operations, while the display interface displays a real-time curve showing the detected position-deformation of the high-pressure hose.

[0011] According to one embodiment of the present invention, the wear detection robot includes a base, a fixed arm connected to the base, and a detection part connected to the fixed arm.

[0012] in:

[0013] The base is movably mounted on a bidirectional track.

[0014] The detection unit includes a fixed ring, a drive assembly, and the electromagnetic loading system. The fixed ring, with an inner diameter larger than the diameter of the high-pressure hose, is fixed to the fixed arm and is placed over the high-pressure hose during measurement. The drive assembly is connected to the fixed ring and can rotate circumferentially on the fixed ring. The electromagnetic loading system is fixed to the drive assembly and is arranged symmetrically along the circumference. The loading heads of the electromagnetic loading systems contact the wall of the high-pressure hose, applying radial stress to it.

[0015] According to one embodiment of the present invention, the drive assembly includes a driving gear, a driven gear, and a drive motor. The driving gear meshes with the driven gear, is mounted on the fixed arm, and is driven by a second drive motor. The driven gear is connected to the fixed ring via a bearing and is circumferentially rotatable relative to the fixed ring under the drive gear's drive.

[0016] According to one embodiment of the present invention, the electromagnetic loading system includes an electromagnetic loading box, an electromagnetic loader, a telescopic rod, and an electromagnetic loading head. The electromagnetic loading box is fixed above the surface of the driven gear via an embedding plate. The electromagnetic loading box is connected to the electromagnetic loader, and the front end of the electromagnetic loader is connected to the telescopic rod and the electromagnetic loading head in turn. The electromagnetic loading box applies a magnetic field to the electromagnetic loader, pushing or pulling the telescopic rod to move and load the device. A displacement sensor is installed on the outer side of the telescopic rod.

[0017] According to one embodiment of the present invention, the electromagnetic loading head is provided with a sliding shoe, the inner side of which is arc-shaped and adapted to the surface of the high-pressure hose, thereby wrapping the high-pressure hose and reducing movement friction.

[0018] According to one embodiment of the present invention, the base is provided with a first drive motor and a roller. The first drive motor is controlled by a motor master control system to drive the roller to move parallel to the bidirectional track.

[0019] According to one embodiment of the present invention, the retaining ring is provided with at least four limit slots, with adjacent limit slots spaced 45 degrees apart. The electromagnetic loading system's electromagnetic loading box is provided with a limit engaging mechanism that can engage with any of the limit slots to maintain stability during the loading process.

[0020] According to one embodiment of the present invention, the limit clamping mechanism includes a limit motor and a limit rod connected to the motor shaft. The limit motor is fixed above the surface of the embedding plate. The limit rod passes through the embedding plate and extends into the limit clamping groove of the fixing ring under the drive of the limit motor to limit the position of the electromagnetic loading system.

[0021] In a second aspect, the present invention further provides a method for detecting the degree of wear of a high-pressure hose using the above-mentioned device, which comprises the following steps:

[0022] S1. Pass the high-pressure hose through the straightener and the wear detection robot, and fix the head end on the electronically controlled roller.

[0023] S2. Start the test bench and set the stress value S, translation speed V, and detection angle through the control display system. Control each motor and the electric roller through the motor master control system. First, control the drive assembly of the wear detection robot to drive the electromagnetic loading system to rotate to the set detection angle and limit it. Then, control the roller of the wear detection robot to translate from left to right or right to left at the set translation speed. Simultaneously, control the electromagnetic loading system 14 of the wear detection robot to apply stress to the high-pressure hose. The displacement sensor collects the deformation of the high-pressure hose and feeds it back to the data acquisition system. The result is displayed as a curve on the display screen, and the test is performed one position at a time.

[0024] S3. When the wear detection robot reaches the limiter at the end of the track, the first detection stops, the detection angle is reset, the driving gear is controlled to rotate to drive the loading angle of the electromagnetic loading system to the new detection angle, and then the wear detection robot is controlled to move in the opposite direction for a second detection; this step is repeated until all angles are detected;

[0025] S4. If the deformation of the high-pressure hose is greater than the threshold deformation in any test, the section of the high-pressure hose is deemed scrapped; otherwise, the section of the high-pressure hose is deemed to be usable;

[0026] S5. After a section of high-pressure hose is inspected, the electronically controlled roller is controlled to rotate and wind the high-pressure hose. The winding length is equal to the length of the two-way track, and the wear degree inspection of the next section of high-pressure hose is started.

[0027] The detection angles are at least four, 0 degree (vertical), 45 degrees, 90 degrees (horizontal) and 135 degrees.

[0028] Compared with the existing technology, the beneficial effects of the present invention are:

[0029] The present invention uses a wear detection robot. Controlled by a motor and electromagnetic loader, it applies dynamic fixed stress to a high-pressure hose using a symmetrical electromagnetic loading head. The robot translates along a bidirectional track for continuous testing, using displacement sensors to continuously measure deformation at various locations and in at least four directions of the hose to determine the degree of wear. This continuous and efficient testing process provides automated results, while maintaining a simple structure, easy operation, and economical practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the front view of the wear detection robot of the present invention;

[0032] Figure 3It is a schematic view of the side view structure of the wear degree detection robot of the application, and the local limit clamping groove is a partial sectional view.

[0033] Figure 4 It is a schematic view of the structure of the driven gear of the application.

[0034] In the figure: 1-test bench, 1-1-motor control system, 1-2-data acquisition system, 2-electric control roller, 2-1-clamping screw, 3-high pressure hose, 4-straightener, 5-wear degree detection robot, 6-control display system, 6-1-control panel, 6-2-translation module, 6-3-rotation module, 6-4-stress module, 7-bidirectional track, 8-limiter, 9-base, 9-1-first drive motor, 9-2-roller, 10-fixed arm, 11-fixed ring, 11-1-limiting clamping groove, 11-2-limiting motor, 11-3-limiting rod, 12-drive gear, 13-driven gear, 14-electromagnetic loading system, 14-1-electromagnetic loading box, 14-2-electromagnetic loader, 14-3-telescopic rod, 14-4-electromagnetic loading head, 14-5-sliding shoe, 15-second drive motor, 16-embedded plate, 17-displacement sensor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the application more clear and obvious, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0036] Reference Figure 1 , the embodiment is a specific structure of the intelligent high pressure hose wear degree detection device, which comprises a test bench 1, an electric control roller 2, a high pressure hose 3, a straightener 4 and a wear degree detection robot 5.

[0037] The test bench 1 comprises a motor control system 1-1, a data acquisition system 1-2 and a control display system 6. The motor control system 1-1 is used to control all the motors of the detection device, that is, two rotating motors, one limiting motor and the electric roller. The data acquisition system 1-2 is used to collect the data obtained by the displacement sensor. The control display system 6 is used to set the control parameters and display the test results. The control display system 6 has a control panel 6-1, and the control panel 6-1 has a translation module 6-2, a rotation module 6-3 and a stress module 6-4, which are used to set three parameters of translation speed V, detection angle and stress value S, and control the operation of the device through the motor control system 1-1.

[0038] The test bench 1 is arranged with a bidirectional track 7 on the table, and each end of the bidirectional track 7 is limited by a limiter 8. The wear degree detection robot 5 is installed on the bidirectional track 7.

[0039] One end of the high-pressure hose 3 is fixed to the electronically controlled roller 2 by a clamping screw 2 - 1 , and the other end is clamped by a straightener 4 to ensure that the high-pressure hose 3 is level. A dust removal brush is provided inside the straightener 4 .

[0040] See also Figures 1-4 The wear detection robot 5 includes a base 9, a fixed arm 10 connected to the base, and the detection part connected to the fixed arm 10.

[0041] A first drive motor 9 - 1 and a roller 9 - 2 are provided in the base. The first drive motor 9 - 1 drives the roller 9 - 2 so that the wear detection robot 5 can move parallel to the bidirectional track 7 .

[0042] The detection part includes a fixing ring 11 , a driving assembly and the electromagnetic loading system 14 .

[0043] The fixing ring 11 is fixed on the fixing arm 10, and its inner diameter is larger than the diameter of the high-pressure hose. The driving assembly is connected to the fixing ring 11, and its driven component can rotate along the circumferential direction on the fixing ring 11.

[0044] The drive assembly includes a drive gear 12, a driven gear 13, and a second drive motor 15. The drive gear 12, meshing with the driven gear 13, is mounted on the fixed arm 10 and driven by the second drive motor 15, which is controlled by the motor master control system. The driven gear 13 is located above the surface of the fixed ring 11 and connected to it via a bearing. The drive gear 12 meshes with the driven gear 13, driving the drive gear 12 and allowing the driven gear 13 to rotate circumferentially relative to the fixed ring 11.

[0045] The electromagnetic loading system 14 is fixed on the driving assembly, and two sets are symmetrically arranged along the circumferential direction. The loading heads of the electromagnetic loading system 14 are in contact with the wall of the high-pressure hose to apply radial stress thereto.

[0046] The electromagnetic loading system 14 is a conventional structure, comprising an electromagnetic loading box 14-1, an electromagnetic loader 14-2, a telescopic rod 14-3, an electromagnetic loading head 14-4, and a sliding shoe 14-5. The electromagnetic loading box 14-1 is secured above the surface of the driven gear 13 via an embedding plate 16. A displacement sensor 17 is located on the outside of the telescopic rod 14-2. The data collected by the displacement sensor 17 represents the deformation of the high-pressure hose 3.

[0047] See also Figure 2-Figure 3The surface of the fixing ring 11 has four recessed limit slots 11-1, with adjacent limit slots 11-1 spaced 45 degrees apart. The electromagnetic loading box 14-1 of the electromagnetic loading system 14 is equipped with a limit engagement mechanism that can engage with any of the limit slots 11-1 to ensure stability during the loading process.

[0048] Specifically, the limit clamping mechanism includes a limit motor 11-2 and a limit rod 11-3 connected to the motor shaft. The limit motor 11-2 is fixed above the surface of the embedding plate 16. The limit rod 11-3 passes through the embedding plate 16 and extends into the limit clamping groove 11-1 of the fixing ring 11 under the drive of the limit motor to limit the position of the electromagnetic loading system 14.

[0049] The following is another embodiment further illustrating the process of detecting the wear degree of a high-pressure hose using the above device:

[0050] First, a deformation calibration experiment should be carried out before testing:

[0051] Pass a brand new high-pressure hose through the straightener 4 and the wear detection robot 5, and secure the head end to the electronically controlled roller 2. Start the test bench, adjust the stress value and translation speed through the control panel 6-1, operate the motor control system 1-1 and the data acquisition system 1-2, and perform a stable test to match the translation speed with the acquisition frequency (based on the stable acquisition of deformation data). The stress value S and translation speed V at this time are the fixed stress value and translation speed used in subsequent tests. When the brand new high-pressure hose is loaded with stress S, the standard deformation e is measured, and the threshold deformation is determined.

[0052] Then the high pressure hose to be inspected can be inspected:

[0053] The first step is to install the used high-pressure hose 3 to be tested on the test bench 1. The translation speed is set to V, the stress value is set to S, and the test angle is set to vertical. The wear detection robot 5 is controlled to translate from left to right. The electromagnetic loading head 14-4 applies stress S to the high-pressure hose 3. The displacement sensor 17 measures the deformation of the high-pressure hose 3 and displays it as a curve on the control and display system 6, completing the test.

[0054] Step 2: One-time wear detection: The wear detection robot 5 stops after reaching the limiter 8. The drive gear 12 rotates, causing the electromagnetic loading system 14 to change its loading angle to 45 degrees, and a second test is performed from right to left. Next, the loading angle is changed to a horizontal position, and three tests are performed from left to right. Finally, the loading angle is changed to an oblique 135 degrees, and four tests are performed from right to left. If the deformation in any direction is greater than the threshold deformation of 1.1e, the section of high-pressure hose 3 is deemed scrapped. If the deformation of the high-pressure hose 3 is within 1.1e in all four tests, it is deemed suitable for continued use.

[0055] The third step is to control the electronically controlled roller 2 to rotate and wind the high-pressure hose 3. The winding length is equal to the length of the two-way track 7, and then enter the wear degree detection of the next section of the high-pressure hose 3.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent high-pressure hose wear detection device, characterized by: It includes a test bench, an electronically controlled roller, a straightener and a wear detection robot; The test bench is equipped with a bidirectional track, with a limiter provided at each end of the bidirectional track; The electric-controlled roller is installed on one side of the test bench and on the extension line of the bidirectional track, and is used to fix and retract the high-pressure hose; The straightener is relatively arranged on the other side of the test bench and is also on the extension line of the bidirectional track, and is used to clamp and straighten the high-pressure hose; The wear detection robot is installed on a bidirectional track and wraps around a high-pressure hose through its detection part. An electromagnetic loading system provided on the detection part applies radial stress to the straightened high-pressure hose, and the robot translates along the bidirectional track to continuously detect the high-pressure hose. A displacement sensor is provided on the outer side of the telescopic rod of the electromagnetic loading system to collect displacement information of various parts of the high-pressure hose. The test bench includes a motor control system, a data acquisition system, and a control and display system; the motor control system controls the electronically controlled roller and the wear detection robot, and the data acquisition system obtains displacement information detected by the wear detection robot through the displacement sensor, thereby obtaining the deformation of the high-pressure hose; The control and display system provides a control operation interface and displays the test results; The wear detection robot includes a base, a fixed arm connected to the base, and the detection part connected to the fixed arm; The base is movably mounted on a bidirectional track; The detection part includes a fixing ring, a driving assembly and the electromagnetic loading system; The fixing ring is fixed on the fixing arm, and its inner diameter is larger than the diameter of the high-pressure hose, and is put on the high-pressure hose during measurement; The driving assembly is connected to the fixed ring and can drive its driven gear to rotate along the circumferential direction on the fixed ring; the electromagnetic loading system is fixed to the driving assembly and two sets are symmetrically arranged along the circumferential direction, and the loading heads thereof are in contact with the wall of the high-pressure hose to apply radial stress thereto; The driving assembly includes a driving gear, a driven gear and a second driving motor; the driving gear is engaged with the driven gear, is installed on the fixed arm, and is driven by the second driving motor, and the second driving motor is controlled by the motor master control system; the driven gear is connected to the fixed ring through a bearing, and can rotate in a circumferential direction relative to the fixed ring under the drive of the driving gear.

2. The intelligent high-pressure hose wear detection device according to claim 1, characterized in that: The electromagnetic loading system includes an electromagnetic loading box, an electromagnetic loader, a telescopic rod and an electromagnetic loading head; the electromagnetic loading box is fixed above the surface of the driven gear through an embedding plate; the electromagnetic loading box is connected to the electromagnetic loader, and the front end of the electromagnetic loader is connected to the telescopic rod and the electromagnetic loading head. The electromagnetic loading box applies a magnetic field to the electromagnetic loader, pushing / pulling the telescopic rod to move and load; the displacement sensor is provided on the outside of the telescopic rod.

3. The intelligent high-pressure hose wear detection device according to claim 2, characterized in that: The electromagnetic loading head is provided with a sliding shoe, the inner side of which is arc-shaped and adapted to the surface of the high-pressure hose, thereby wrapping the high-pressure hose and reducing movement friction.

4. The intelligent high-pressure hose wear detection device according to any one of claims 1 to 3, characterized in that: The base is provided with a first driving motor and a roller; the first driving motor is controlled by a motor master control system to drive the roller to move parallel on a bidirectional track.

5. The intelligent high-pressure hose wear detection device according to any one of claims 1 to 3, characterized in that: At least four limit slots are provided on the surface of the fixing ring, and the interval between two adjacent limit slots is 45°. A limit snap-in mechanism is provided on the electromagnetic loading box of the electromagnetic loading system, which can be snap-connected with any limit slot to ensure that the electromagnetic loading system maintains stability during the loading process.

6. A method for detecting the degree of wear of a high-pressure hose using the device according to any one of claims 1 to 5, characterized in that: The steps include: S1. Pass the high-pressure hose through the straightener and the wear detection robot, and fix the head end on the electronically controlled roller; S2. Start the test bench, set the stress value S, translation speed V, and detection angle through the control display system, and control the motor and electric roller through the motor master control system. First, control the drive component of the wear detection robot to drive the electromagnetic loading system to rotate to the set detection angle and limit it. Then, control the roller of the wear detection robot to translate from left to right or right to left at the set translation speed. At the same time, control the electromagnetic loading system of the wear detection robot to apply stress to the high-pressure hose. The displacement sensor collects the displacement information of the high-pressure hose and feeds it back to the data acquisition system to obtain the deformation. The deformation is displayed on the display screen as a curve, and the test is performed one position at a time. S3. When the wear detection robot reaches the limiter at the end of the track, the first detection stops, the detection angle is reset, the driving gear is controlled to rotate to drive the loading angle of the electromagnetic loading system to the new detection angle, and then the wear detection robot is controlled to perform a second detection in the opposite direction; this step is repeated until all angles are detected; S4. If the deformation of the high-pressure hose exceeds the deformation threshold during any test, the section of the high-pressure hose is deemed scrapped; otherwise, the section of the high-pressure hose is deemed usable. S5. After a section of high-pressure hose is inspected, the electronically controlled roller is controlled to rotate and wind the high-pressure hose. The winding length is equal to the length of the two-way track, and the wear degree inspection of the next section of high-pressure hose is started. The stress value S, translation velocity V and deformation threshold mentioned above are obtained by performing a calibration test on a brand new high-pressure hose.

7. The method for detecting the degree of wear of a high-pressure hose according to claim 6, characterized in that: The detection angles are at least four, 0 degree (vertical), 45 degrees, 90 degrees (horizontal) and 135 degrees.

8. The method for detecting the degree of wear of a high-pressure hose according to claim 6 or 7, characterized in that: The calibration test is as follows: Pass a brand new high-pressure hose through the straightener and the wear detection robot, and fix the head end on the electronically controlled roller; start the test bench, adjust the stress value and translation speed through the control display system, and perform a stable test to match the translation speed with the acquisition frequency, so as to stably obtain deformation data. The stress value S and translation speed V at this time are the fixed stress value and translation speed used in subsequent tests. When the brand new high-pressure hose is loaded with the stress value S, the measured standard deformation is e.

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