Bending friction fatigue test device and method for deep-sea drilling rig hoisting wire rope

Abstract

The present invention discloses a bending friction fatigue test device and method for lifting steel wire rope of deep-sea drilling rig, and a bending friction fatigue test device for lifting steel wire rope of deep-sea drilling rig, which is composed of a frame module, a driving module, a rotating module, a lifting module, a fixture module, a contact loading module, a corrosion module, a collection module and a data processing module: the frame module includes a bottom plate, a support column, a long crossbeam, a short crossbeam, a reinforcing rib, a guide shaft and a guide wheel, which are used to ensure the stability of the test device and to carry the driving module, the driving module, the rotating module, the lifting module and the fixture module. After adopting this technical solution, the device can simulate the complex coupling working conditions of electrochemical corrosion environment, bending fatigue and friction wear, and can reveal the evolution law of bending friction fatigue damage of steel wire rope under different working conditions and different friction pairs.

Description

Technical Field

[0001] The present invention relates to a bending friction fatigue test device and method for a deep-sea drilling rig hoisting wire rope, in particular to a bending friction fatigue test device for a wire rope capable of realizing a corrosive environment, complex contact forms, different friction pairs, curvature radii and crossing angles, and bending fatigue coupling working conditions. Background Art

[0002] With the rapid economic development in my country, the demand for energy is increasing. The land oil and gas (oil and natural gas) resources are becoming increasingly depleted. The exploration and development of marine oil and gas resources has become an important way to alleviate the energy crisis. my country's marine oil and natural gas reserves account for 23% and 29% of the total national oil and natural gas resources respectively (the third national oil and gas resource assessment). 70% of marine oil and gas resources are stored in the deep sea (water depth> 200m). Therefore, the exploration and development of deep-sea oil and gas resources is a challenge and major demand facing my country's economic development. Deep-sea drilling rigs are important drilling equipment for the exploration and development of deep-sea oil and gas resources. Its lifting system is the core component of deep-sea drilling rigs. It is mainly composed of winches (including drums, multi-layer winding wire ropes, main shaft devices, etc.), traveling systems (including overhead cranes, traveling blocks, wire ropes, big hooks, etc.), brake devices and derricks (installed on the drilling platform to support the traveling system, etc.), etc., which are responsible for lifting and lowering drill strings during drilling, controlling the drilling pressure applied by the drill bit to the bottom of the well, and lowering casing to reinforce the well wall. Steel wire rope (made of galvanized steel wire and spirally twisted strands) is the key load-bearing component of the lifting system and the "lifeline" of the deep-sea drilling rig. Once it fails, the drilling operation will be suspended or terminated, and even cause equipment damage or casualties, seriously affecting the safety and reliability of the deep-sea drilling operation.

[0003] The wire rope of the hoisting system is wound on the winch drum in multiple layers. The outermost wire rope is wound out at a certain angle and led to the fast rope pulley. It is bent and wound through the crown block (fixed pulley block) and the traveling block (movable pulley block) and fixed to the dead rope holder. The wire rope is wound in or released through the drum to achieve the lifting or lowering of the drill string. During the lifting and lowering of the drill string, the lifting wire rope is subjected to repeated bending fatigue loads and is in a bending contact state with different friction pairs (wire rope, drum rope groove and baffle, pulley rope groove). Under the action of fatigue load, the wire rope and different friction pairs show relative slip. At the same time, the offshore drilling rig is in a humid salt spray operating environment for a long time, which creates an electrolyte corrosion solution environment for the lifting wire rope. Therefore, the electrolyte corrosion solution environment, bending fatigue load, bending contact and relative slip coupling lead to bending friction fatigue damage (wear, fatigue crack initiation and expansion, and fracture, etc.) of wire ropes under different friction pairs in the corrosive environment, resulting in a reduction in the cross-sectional area of ​​the wire rope and an increase in the number of broken wires, thereby shortening the service life of the deep-sea drilling rig hoisting wire rope. For this reason, a deep-sea drilling rig hoisting wire rope bending friction fatigue test device is urgently needed to reveal the evolution law of wire rope bending friction fatigue damage under different friction pairs (between wire ropes, wire rope-drum rope groove, wire rope-drum partition, wire rope-pulley rope groove), which is of great significance to ensure the service safety and reliability of the deep-sea drilling rig hoisting system.

[0004] In terms of wire rope friction and wear devices, Patent No. CN202020592435.0 discloses a non-continuous wire rope fretting wear test device, which can realize the fretting wear characteristics of wire ropes at different angles and different contact loads, but cannot realize bending fatigue, electrochemical corrosion and coupling conditions of different friction pairs; Patent No. CN202210379740.5 discloses a wire rope fretting fatigue wear simulation device and evaluation method, which can be used to carry out experiments on the influence of wire rope fretting fatigue wear on the mechanical properties and life of wire ropes, but cannot realize bending fatigue, variable friction pairs, variable crossing angles and electrochemical corrosion conditions. The patent number CN201710089437.0 discloses a micro-motion wear test device for mining wire ropes, which can realize micro-motion wear of vertical and horizontal wire ropes, but cannot realize complex working conditions of bending fatigue, variable friction pairs and electrochemical corrosion; the patent number CN201510102984.9 discloses a comprehensive friction detection device and method for wire ropes and friction pads for hoists, which can realize high-speed sliding friction, creeping friction wear of crossed wire ropes and high-speed sliding friction tests between wire ropes and friction pads, but cannot realize complex working conditions of bending fatigue, variable friction pairs and electrochemical corrosion. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a deep-sea drilling rig lifting wire rope bending friction fatigue test device and method, which simulates the bending friction fatigue behavior of the wire rope under different working conditions (corrosive media, bending curvature, crossing angle, fatigue load, contact load and frequency, etc.) and different friction pairs, and can reveal the friction wear and fatigue fracture characteristics of the wire rope during the bending friction fatigue process and the dynamic sliding behavior of the contact pair interface. The device is easy to operate, fully functional, and easy to install. The technical solution to achieve the purpose of the present invention is:

[0006] A deep-sea drilling rig lifting wire rope bending friction fatigue test device, characterized in that it is composed of a frame module, a drive module, a rotation module, a lifting module, a fixture module, a contact loading module, a corrosion module, a collection module and a data processing module;

[0007] The drive module includes a servo electric cylinder and an AC servo driver, which are used to apply fatigue load, stretching speed and control displacement amplitude; the AC servo driver is fixed to the base plate by bolts and connected to the servo electric cylinder by a data line;

[0008] The rotating module includes a rotating disc and a rotating platform, the rotating disc is welded in the middle of the bottom plate, and bolt holes are evenly arranged every 5° on the rotating module, the rotating module includes a rotating base, a rotating upper platform and a cylindrical vertical guide rail, the rotating base and the rotating disc are connected by fixing bolts, and the cylindrical vertical guide rail includes a cylindrical vertical guide rail I, a cylindrical vertical guide rail II, a cylindrical vertical guide rail III and a cylindrical vertical guide rail IV, which are symmetrically arranged on the rotating upper platform to control the contact crossing angle of the wire rope;

[0009] The lifting module includes a double-linked screw mechanism 21 and a lifting platform, which are used to control the contact angle of the wire rope and change the bending curvature of the wire rope;

[0010] The corrosion module comprises a corrosion medium nozzle, a corrosion medium nozzle base, a corrosion medium liquid guide pipe and a corrosion medium storage box;

[0011] The clamp module includes a single rope groove clamp and a double rope groove clamp to realize the experiment of the wire rope and different contact friction pairs. The single rope groove clamp and the double rope groove clamp are respectively connected to the upper platform of the lifting platform through bolts and are located at the center of the platform;

[0012] The contact loading module includes a loading slide rail, a loading plate, a loading wire rope partition, a loading partition and a loading wire rope guide wheel, which are used to apply different contact loads;

[0013] The acquisition module includes a dynamic force acquisition module and a slip and fatigue broken wire monitoring module. The dynamic force acquisition module includes a tension sensor, a tension sensor connection, a pressure sensor, a pressure sensor connection platform, and a data acquisition card, which are used to detect the tension at both ends of the wire rope and the positive pressure in the positive direction; the slip and fatigue broken wire monitoring module includes a high-speed camera, a camera bracket and a camera bracket base. The high-speed camera is connected to the camera bracket and can be freely rotated 180°. The camera bracket is connected to the camera bracket base by a magnetic magnet, which is convenient for the overall disassembly and installation of the camera;

[0014] The data processing module includes a host computer, which is used to intuitively display the collected data and process and analyze the data;

[0015] The rack module includes a bottom plate, support columns, long beams, short beams, reinforcing ribs, guide shafts and guide wheels, which are used to ensure the stability of the test device and carry the drive module, drive module, rotation module, lifting module and fixture module;

[0016] The contact loading module also includes guide pulleys, namely loading wire rope guide pulley I and loading wire rope guide pulley II, which are symmetrically fixed on the horizontal axis on the upper platform of the lifting platform by bolts, and are connected to the loading plate at one end of the wire rope and to the weight at the other end.

[0017] Preferably, the support columns include support column I, support column II, support column III and support column IV, which have the same structure and are composed of a vertical frame and an oblique bracket, and an axle pin hole is set at the upper end of the vertical bracket, the support column 1 and support column II are symmetrically arranged along the longitudinal axis of the base plate, the bottom ends of the vertical frame and the oblique bracket are welded to the base plate, the support column III and support column IV are symmetrically arranged along the horizontal axis of the base plate with the support column I and support column II, the servo electric cylinder base is connected to the base plate by bolts, and is arranged on the horizontal axis of the base plate, located at the symmetry center of support column I and support column II.

[0018] Preferably, the long cross beam comprises a long cross beam I and a long cross beam II, and the two ends of the long cross beam I along the longitudinal axis are respectively connected to the high ends of the vertical frames of the support column I and the support column III, and are kept at the same level;

[0019] The long cross beam II and the long cross beam I are arranged symmetrically along the longitudinal axis, and the two ends are connected to the high ends of the support column II and the support column IV respectively, and keep the same level. The short cross beam includes a short cross beam I and a short cross beam II. The two ends of the short cross beam I along the horizontal axis of the bottom plate are connected to the high ends of the vertical frames of the support column I and the support column II respectively, and keep the same horizontal height.

[0020] The two ends of the short cross beam II along the horizontal axis of the bottom plate are respectively connected to the high ends of the vertical frames of the support columns III and IV, and maintain the same horizontal height.

[0021] Preferably, the double screw mechanism 21 includes a servo motor, a lifting servo driver, a screw lifting mechanism I and a screw lifting mechanism II, all of which are fixed on the rotating upper end platform by bolts, the lifting servo driver is connected to the servo motor through a data line, the servo motor is simultaneously connected to the screw lifting mechanism I and the screw lifting mechanism II through a screw, the pressure sensor includes a pressure sensor I and a pressure sensor II, the pressure sensor I is connected to the screw lifting mechanism I through an intermediate threaded hole, and the upper end is connected to the lower base of the lifting platform through a bolt, the pressure sensor II is connected to the screw lifting mechanism II through an intermediate threaded hole, and the upper end is connected to the lower base of the lifting platform through a bolt, and is respectively connected to the data acquisition card through a data line;

[0022] The lifting platform includes an upper platform, a lower base, a cylindrical slider and a loaded contact wire rope guide wheel. The lower base is connected to the pressure sensor I and the pressure sensor II by bolts. The cylindrical slider includes a cylindrical slider I, a cylindrical slider II, a cylindrical slider III and a cylindrical slider IV, and is respectively connected to the cylindrical vertical guide rail I, the cylindrical vertical guide rail II, the cylindrical vertical guide rail III and the cylindrical vertical guide rail IV.

[0023] Preferably, the loading slide rails include loading slide rail I, loading slide rail II, loading slide rail III and loading slide rail IV, which are symmetrically arranged on the upper platform of the lifting platform and connected by screws;

[0024] The loading plate includes a loading plate I and a loading plate II, wherein the loading plate I is connected to the loading slide rail I and the loading slide rail IV by bolts, and the loading plate II is connected to the loading slide rail II and the loading slide rail IV by bolts. The loading partition includes a loading partition I and a loading partition II, which are respectively connected to the loading plate I and the loading plate II by bolts, and the loading wire rope partition includes a loading wire rope partition I and a loading wire rope partition II.

[0025] Preferably, the tension sensor includes a tension sensor I and a tension sensor II, one end of the tension sensor I is connected to the servo electric cylinder through the tension sensor I connection, one end is connected to the fatigue wire rope, and is connected to the data acquisition card through the data transmission line, and one end of the tension sensor II is connected to the base plate through the tension sensor II connection, one end is connected to the fatigue wire rope, and is connected to the data acquisition card through the data transmission line.

[0026] Preferably, the host computer includes a data display system and a data processing system, which are connected to the acquisition card via a data line, obtain the collected data, analyze and process the data through a self-written program, and display the data on the interface.

[0027] A deep-sea drilling rig hoisting wire rope bending friction fatigue test method,

[0028] The experimental steps are as follows:

[0029] S1. Before the test, connect all sensors to the data set card, zero all sensors, adjust the high-speed camera to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0030] S2. Adjust the rotating platform and set the required rotation angle;

[0031] S3, control the double servo lifting mechanism through the lifting servo driver to raise the lifting platform to the required height and obtain the wire rope wrap angle required for the test;

[0032] S4. Cut the fatigue wire rope required for the test, place it on a single-groove clamp or a double-groove clamp, connect one end to the tension sensor I, and the other end to the tension sensor II;

[0033] S5. Use the servo driver to control the servo electric cylinder to tighten the fatigue wire rope and provide preload. Observe the value of the pressure sensor and stop when it reaches the set value.

[0034] S6. When the test is the working condition of wire rope and partition and wire rope and wire rope, in the loading module, add the corresponding mass weight to control the contact load of the partition or wire rope and wire rope; if it is other working conditions, jump directly to S7;

[0035] S7, setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder through the servo drive controller;

[0036] S8, start the host computer and open the data display interface;

[0037] S9, start the electric cylinder to start the test, the corrosive medium nozzle starts to spray the corrosive medium, and at the same time, the tension sensor I, tension sensor II, pressure sensor I, pressure sensor II and high-speed camera synchronously collect relevant data through the data acquisition card and transmit it to the upper computer display system;

[0038] S10, when the number of test cycles reaches the set value, the servo cylinder stops working and the experiment is completed;

[0039] S11. Repeat S1-S7, adjust different wrapping angles, wire rope crossing angles, fatigue loads, contact loads, tensile speeds and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions;

[0040] S12. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve, dynamic slip amplitude and external wire breakage of the wire rope, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0041] After adopting the above technical solution, the present invention has the following positive effects:

[0042] After adopting this technical solution, the device can simulate the complex coupled working conditions of electrochemical corrosion environment, bending fatigue and friction wear, and can reveal the evolution law of bending friction fatigue damage (friction wear, electrochemical corrosion damage, fatigue wire breakage and dynamic slip of contact interface of contact pair) of wire rope under different working conditions (corrosive medium, bending curvature, crossing angle, fatigue load, contact load and frequency, etc.) and different friction pairs (between wire ropes, wire rope-drum rope groove, wire rope-drum partition, wire rope-pulley rope groove). BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 : Schematic diagram of the overall structure of the deep-sea drilling rig hoisting wire rope bending friction fatigue test device;

[0044] Figure 2 : Schematic diagram of the frame structure of the deep-sea drilling rig hoisting wire rope bending friction fatigue test device;

[0045] Figure 3 : Schematic diagram of the rotating platform structure of the deep-sea drilling rig hoisting wire rope bending friction fatigue test device;

[0046] Figure 4 : Schematic diagram of the lifting platform structure of the deep-sea drilling rig lifting wire rope bending friction fatigue test device;

[0047] Figure 5 : Schematic diagram of the fixture structure of the deep-sea drilling rig hoisting wire rope bending friction fatigue test device;

[0048] Figure 6 : Detection flow chart.

[0049] 1-base plate; 2-servo electric cylinder; 3-AC servo driver; 4-tension sensor I; 5-tension sensor 1; 6-guide wheel I; 7-guide shaft I; 8-fatigue wire rope; 9-high-speed camera; 10-camera bracket; 11-corrosive medium nozzle; 12-camera bracket base; 13-corrosive medium nozzle base; 14-corrosive medium water guide pipe; 15-cylindrical vertical guide rail; 16-loading wire rope; 17-guide wheel II; 18-guide shaft II; 19-lifting platform; 20-lifting servo driver; 21-double screw mechanism; 22-rotating platform; 23-tension sensor 2; 24-tension sensor III connection; 25-corrosive medium storage box; 26-rotating disc; 27-support column I; 27-1-support column I vertical frame; 27-2-support column I oblique support; 27-3-support column I shaft pin hole; 28-support column II; 28-1-support column II vertical frame; 28-2-support column II oblique support; 28-3-support column II shaft pin hole; 2 9-short beam I; 30-long beam I; 31-long beam II; 32-short beam II; 33-support column III; 33-1-support column III vertical frame; 33-2-support column III oblique support; 33-3-support column III axis pin hole; 34-support column IV; 34-1-support column IV vertical frame; 34-2-support column IV oblique support; 34-3-support column IV axis pin hole; 35-strengthening rib I; 36-strengthening rib II; 37-rotating base; 38-rotating upper end Platform; 39-cylindrical vertical guide rail I; 40-cylindrical vertical guide rail II; 41-cylindrical vertical guide rail III; 42-cylindrical vertical guide rail IV; 43-screw lifting mechanism I; 44-pressure sensor I; 45-lifting platform lower base; 46-lifting platform upper platform; 47-servo motor; 48-pressure sensor II; 49-screw lifting mechanism II; 50-cylindrical slider I; 51-loading platform slide rail I; 52-loading guide wheel I; 53-loading platform I; 54-loading contact steel Wire rope guide wheel I; 55-loading wire rope partition II; 56-loading platform II; 57-cylindrical slider II; 58-loading platform slide rail II; 59-loading guide wheel II; 60-loading platform slide rail III; 61-cylindrical slider III; 62-single rope groove clamp; 63-loading contact wire rope guide wheel II; 64-loading partition II; 65-double rope groove clamp; 66-loading partition I; 67-loading wire rope partition I; 68-cylindrical slider IV; 69-loading platform slide rail IV. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] like Figure 1-5 A deep-sea drilling rig lifting wire rope bending friction fatigue test device comprises a frame module, a drive module, a rotation module, a lifting module, a fixture module, a contact loading module, a corrosion module, a collection module and a data processing module.

[0054] The rack module is composed of a bottom plate 1, a tension sensor connection I4, a guide wheel I6, a guide shaft I7, a camera bracket base 12, a corrosive medium nozzle base 13, a guide wheel II17, a guide shaft II18, a rotating disk 26, a support column I27, a support column II28, a short beam I29, a long beam I30, a long beam II31, a short beam II32, a support column III33, a support column IV34, a reinforcing rib I35 and a reinforcing rib II36, and further , support column I27, support column II28, support column III33 and support column IV34 are symmetrically arranged on the bottom plate 1, and the bottom ends of the support column I vertical frame 27-1, support column I oblique support 27-2, support column II vertical frame 28-1, support column II oblique support 28-2, support column III vertical frame 33-1, support column III oblique support 33-2, support column IV vertical frame 43-1, support column IV oblique support 34-2 are respectively welded and connected to the bottom plate 1. Further described, the axial shaft I7 is respectively connected to the axial pin hole 27-3 of the support column I and the axial pin hole 28-3 of the support column II, and the guide wheel I6 is installed at the center position of the axial shaft I7. The guide shaft II18 is respectively connected to the axial pin hole 33-3 of the support column III and the axial pin hole 34-3 of the support column IV, and the guide wheel II17 is installed at the center position of the axial guide shaft II18. Further, the two ends of the short crossbeam I29 are respectively welded to the upper ends of the vertical frame 27-1 of the support column I and the vertical frame 28-1 of the support column II. The short crossbeam II32 is respectively welded to the upper ends of the vertical frame 33-1 of the support column III and the vertical frame 34-1 of the support column IV, and both are kept at the same height. Further, the two ends of the long crossbeam I30 are respectively welded to the upper ends of the vertical frame 28-1 of the support column II and the vertical frame 33-1 of the support column III. The two ends of the long crossbeam II31 are respectively welded to the vertical frame 27-1 of the support column I and the vertical frame 43-1 of the support column IV, and both are kept at the same height. Further, the camera bracket base 12 is respectively connected to the long crossbeam I30 and the long crossbeam II31 by bolts. The corrosive medium nozzle base 13 is respectively connected to the long crossbeam I30 and the long crossbeam II31 by bolts, and is located at the center of the long crossbeam I30 and the long crossbeam II31. Further, the two ends of the reinforcing rib I35 are respectively welded to the oblique support 28-2 of the support column II and the oblique support 34-2 of the support column III, and the bottom surface is welded to the bottom plate 1. The two ends of the reinforcing rib II36 are respectively welded to the oblique support 27-2 of the support column I and the oblique support 34-2 of the support column IV, and the bottom surface is welded to the bottom plate 1.

[0055] The driving module includes a servo electric cylinder 2 and an AC servo driver 3, which are used to apply fatigue load, stretching speed and control displacement amplitude. Further, the servo electric cylinder 2 is connected to the base plate 1 by bolts and is located at the symmetrical center of the support column I27 and the support column II28. The AC servo driver 3 is fixed to the base plate 1 by bolts and connected to the servo electric cylinder 2 by a data line.

[0056] The rotating module includes a rotating disc 26 and a rotating platform 22, which are used to control the contact crossing angle of the wire rope. It is further described that the rotating disc 26 is welded to the base plate 1 and is located at the center of the base plate 1, and bolt holes are evenly arranged every 5°. The rotating platform 22 includes a rotating base 37, a rotating upper platform 38 and a cylindrical vertical guide rail 15, and the rotating base 37 is connected to the rotating disc 26 by bolts. It is further described that the cylindrical vertical guide rail 15 includes a cylindrical vertical guide rail I39, a cylindrical vertical guide rail II40, a cylindrical vertical guide rail III41 and a cylindrical vertical guide rail IV42, which are symmetrically arranged on the rotating upper platform 38.

[0057] The lifting module includes a double screw mechanism 21 and a lifting platform 19, and further the double screw mechanism 21 includes a servo motor 47, a lifting servo driver 20, a screw lifting mechanism I43 and a screw lifting mechanism II49, all of which are fixed on the rotating upper platform 38 by bolts. The lifting servo driver 20 is connected to the servo motor 47 through a data line. The servo motor 47 is also connected to the screw lifting mechanism I43 and the screw lifting mechanism II49 through a screw to achieve synchronous lifting. The lifting platform 19 includes a lifting platform upper platform 46, a lifting platform lower base 45, a cylindrical slider and a contact wire rope guide wheel. The cylindrical slider includes a cylindrical slider I50, a cylindrical slider II51, a cylindrical slider III61 and a cylindrical slider IV68, and are respectively connected to the cylindrical vertical guide rail I39, the cylindrical vertical guide rail II40, the cylindrical vertical guide rail III41 and the cylindrical vertical guide rail IV42. The contact wire rope guide wheel includes a contact wire rope guide wheel I54 and a contact wire rope guide wheel II63.

[0058] The corrosion module includes a corrosive medium nozzle 11, a corrosive medium nozzle base 13, a corrosive medium water pipe 14 and a corrosive medium storage box 25. The corrosive medium nozzle base 13 is connected to the long crossbeam I30 and the long crossbeam II31 by bolts, and the corrosive medium nozzle 11 is installed on the corrosive medium nozzle base 13, and a corrosion system is formed with the corrosive medium storage box 25 through the corrosive medium water pipe 14. The corrosive medium nozzle 11 is directly facing the contact position of the wire rope to achieve continuous spraying of the corrosive medium.

[0059] The clamp module includes a single rope groove clamp 62 and a double rope groove clamp 65, and is connected to the upper platform 46 of the lifting platform by bolts and is located at the center of the platform to implement experiments on wire ropes and different contact friction pairs.

[0060] The contact loading module includes a loading slide rail, a loading plate, a loading wire rope partition, a loading partition and a loading wire rope guide wheel, which are used to apply different contact loads. The loading plate further includes a loading plate I53 and a loading plate II56, and the loading plate I53 is connected to the loading slide rail I51 and the loading slide rail IV69 by bolts. The loading plate II56 is connected to the loading slide rail II58 and the loading slide rail III60 by bolts. The loading partition includes a loading partition I66 and a loading partition II64, which are respectively connected to the loading plate I53 and the loading plate II56 by bolts. The loading wire rope partition includes a loading wire rope partition II55 and a loading wire rope partition I67. The guide pulley further includes a loading wire rope guide wheel I52 and a loading wire rope guide wheel II59, which are respectively fixed on the horizontal axis on the upper platform of the lifting platform by bolts, and connected to the loading plate at one end and a weight at the other end by a wire rope.

[0061] The acquisition module includes a dynamic force acquisition module and a slip detection module. The dynamic force acquisition module includes a tension sensor I5, a tension sensor II23, a tension sensor I connection 4, a tension sensor II connection 24, a pressure sensor I44 and a pressure sensor II48. Further, one end of the tension sensor I5 is connected to the servo electric cylinder 2 through the tension sensor I connection 4, one end is connected to the fatigue wire rope 8, and is connected to the data acquisition card through a data transmission line. One end of the tension sensor II23 is connected to the base plate 1 through the tension sensor II connection 24, one end is connected to the fatigue wire rope 8, and is connected to the data acquisition card through a data transmission line.

[0062] Further, the pressure sensor includes a pressure sensor I44 connected to the screw lifting mechanism I43 through a middle threaded hole, and the upper end is connected to the lower base 45 of the lifting platform through a bolt. The pressure sensor II48 is connected to the screw lifting mechanism II49 through a middle threaded hole, and the upper end is connected to the lower base 45 of the lifting platform through a bolt. And they are respectively connected to the data acquisition card through a data line.

[0063] The slip detection module includes a high-speed camera 9, a camera bracket 10 and a camera bracket base 12. The high-speed camera 9 is connected to the camera bracket 10 and can rotate freely 180 degrees. The camera bracket 10 is connected to the camera bracket base 12 by a magnetic magnet, which is convenient for the overall disassembly and installation of the camera.

[0064] like Figure 6 As shown, the data processing module includes a host computer, which is connected to the tension sensor I5, the tension sensor II23, the high-speed camera 9, the pressure sensor I44 and the pressure sensor II48 respectively, and processes the collected and processed data in real time.

[0065] The bending fatigue wear test method performed by the test device comprises the following steps:

[0066] S1. Before the test, connect the tension sensor I5, tension sensor II23, pressure sensor I44 and pressure sensor II48 to the data acquisition card to zero all sensors, adjust the high-speed camera 9 to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0067] S2, adjusting the rotating platform 22 to set the required rotation angle;

[0068] S3, controlling the double servo lifting mechanism through the lifting servo driver 20, raising the lifting platform 19 to the required height, and obtaining the wire rope wrap angle required for the test;

[0069] S4. Cut the fatigue wire rope 8 required for the test, place it on the single rope groove clamp 62 or the double rope groove clamp 65, connect one end to the tension sensor I5, and the other end to the tension sensor II23;

[0070] S5. Control the servo electric cylinder 2 through the AC servo driver 3 to tighten the fatigue wire rope and provide preload. Observe the value of the pressure sensor and stop when it reaches the set value;

[0071] S6. In the loading module, add corresponding mass weights to control the contact load between the loading partition or the fatigue wire 8 and the loading wire rope 16; (When the test is the wire rope and partition working condition and the wire rope and wire rope working condition, S6 is required, otherwise jump directly to S7);

[0072] S7. Setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder 2 through the servo drive controller.

[0073] S8, start the host computer and open the data display interface;

[0074] S9, start the electric cylinder and start the test. The corrosive medium nozzle 11 starts to spray the corrosive medium. At the same time, the tension sensor I5, tension sensor II23, pressure sensor I44, pressure sensor II48 and high-speed camera 9 synchronously collect relevant data through the data acquisition card and transmit it to the host computer display system.

[0075] S10, when the number of test cycles reaches the set value, the servo electric cylinder 2 stops working and the experiment is completed;

[0076] S11. Repeat S1-S7, adjust different wrapping angles, wire rope crossing angles, fatigue loads, contact loads, tensile speeds, corrosive media and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions.

[0077] S12. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve and dynamic slip amplitude, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0078] Through the above test method, this test device can carry out the following experiments:

[0079] Wire rope and rope groove bending fatigue wear test:

[0080] S1. Before the test, connect the tension sensor I5, tension sensor II23, pressure sensor I44 and pressure sensor II48 to the data acquisition card to zero all sensors, adjust the high-speed camera 9 to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0081] S2, adjusting the rotating platform 22 to set the required rotation angle;

[0082] S3, controlling the double servo lifting mechanism through the lifting servo driver 20, raising the lifting platform 19 to the required height, and obtaining the wire rope wrap angle required for the test;

[0083] S4. Cut the fatigue wire rope 8 required for the test, place it on the single rope groove fixture 62, connect one end to the tension sensor I5, and the other end to the tension sensor II23;

[0084] S5. Control the servo electric cylinder 2 through the AC servo driver 3 to tighten the fatigue wire rope and provide preload. Observe the value of the pressure sensor and stop when it reaches the set value;

[0085] S6. Setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder 2 through the servo drive controller.

[0086] S7, start the host computer and open the data display interface;

[0087] S8, start the electric cylinder and start the test. The corrosive medium nozzle 11 starts to spray the corrosive medium. At the same time, the tension sensor I5, tension sensor II23, pressure sensor I44, pressure sensor II48 and high-speed camera 9 synchronously collect relevant data through the data acquisition card and transmit it to the host computer display system.

[0088] S9, when the number of test cycles reaches the set value, the servo electric cylinder 2 stops working and the experiment is completed;

[0089] S10. Repeat S1-S7, adjust different wrapping angles, wire rope crossing angles, fatigue loads, contact loads, tensile speeds, corrosive media and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions.

[0090] S11. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve and dynamic slip amplitude, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0091] Wire rope and partition bending fatigue wear test:

[0092] S1. Before the test, connect the tension sensor I5, tension sensor II23, pressure sensor I44 and pressure sensor II48 to the data acquisition card to zero all sensors, adjust the high-speed camera 9 to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0093] S2, controlling the double servo lifting mechanism through the lifting servo driver 20, raising the lifting platform 19 to the required height, and obtaining the wire rope wrap angle required for the test;

[0094] S3, cut the fatigue wire rope 8 required for the test, place it on the single rope groove clamp 62, connect one end to the tension sensor I5, and the other end to the tension sensor II23;

[0095] S4, control the servo electric cylinder 2 through the servo driver 3 to tighten the fatigue wire rope and provide preload. Observe the value of the pressure sensor and stop when it reaches the set value;

[0096] S5. In the loading module, corresponding mass weights are added to control the contact load between the loading partition I66 and the loading partition II64 or the fatigue wire rope 8;

[0097] S6. Setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder 2 through the servo drive controller.

[0098] S7, start the host computer and open the data display interface;

[0099] S8, start the electric cylinder and start the test. The corrosive medium nozzle 11 starts to spray the corrosive medium. At the same time, the tension sensor I5, tension sensor II23, pressure sensor I44, pressure sensor II48 and high-speed camera 9 synchronously collect relevant data through the data acquisition card and transmit it to the host computer display system.

[0100] S9, when the number of test cycles reaches the set value, the servo electric cylinder 2 stops working and the experiment is completed;

[0101] S10. Repeat S1-S7, adjust different wrap angles, fatigue loads, contact loads, tensile speeds, corrosive media and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions.

[0102] S11. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve and dynamic slip amplitude, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0103] Wire rope and wire rope parallel bending fatigue wear test:

[0104] S1. Before the test, connect the tension sensor I5, tension sensor II23, pressure sensor I44 and pressure sensor II48 to the data acquisition card to zero all sensors, adjust the high-speed camera 9 to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0105] S2, controlling the double servo lifting mechanism through the lifting servo driver 20, raising the lifting platform 19 to the required height, and obtaining the wire rope wrap angle required for the test;

[0106] S3, cut the fatigue wire rope 8 required for the test, place it on the single rope groove clamp 62, connect one end to the tension sensor I5, and the other end to the tension sensor II23;

[0107] S4, control the servo electric cylinder 2 through the servo driver 3 to tighten the fatigue wire rope 8 and provide pre-tightening force. Observe the value of the pressure sensor and stop when it reaches the set value;

[0108] S5. First, pass one loading steel wire rope 16 around the loading steel wire rope partition I67, the loading contact steel wire rope guide wheel I54, and the loading contact steel wire rope guide wheel II63, and pre-tighten it; then pass another loading steel wire rope 16 around the loading steel wire rope partition II55, the loading contact steel wire rope guide wheel I54, and the loading contact steel wire rope guide wheel II63.

[0109] S6. In the loading module, add corresponding mass weights to control the contact load between the fatigue steel wire 8 and the loading steel wire rope 16;

[0110] S7. Setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder 2 through the servo drive controller.

[0111] S8, start the host computer and open the data display interface;

[0112] S9, start the electric cylinder and start the test. The corrosive medium nozzle 11 starts to spray the corrosive medium. At the same time, the tension sensor I5, tension sensor II23, pressure sensor I44, pressure sensor II48 and high-speed camera 9 synchronously collect relevant data through the data acquisition card and transmit it to the host computer display system.

[0113] S10, when the number of test cycles reaches the set value, the servo electric cylinder 2 stops working and the experiment is completed;

[0114] S11. Repeat S1-S7, adjust different wrap angles, fatigue loads, contact loads, tensile speeds, corrosive media and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions.

[0115] S12. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve and dynamic slip amplitude, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0116] Bending fatigue wear test of upper and lower wire ropes

[0117] S1. Before the test, connect the tension sensor I5, tension sensor II23, pressure sensor I44 and pressure sensor II48 to the data acquisition card to zero all sensors, adjust the high-speed camera 9 to a suitable height, and make corresponding marking points on the surface of the wire rope;

[0118] S2, adjusting the rotating platform 22 to set the required rotation angle;

[0119] S3, controlling the double servo lifting mechanism through the lifting servo driver 20, raising the lifting platform 19 to the required height, and obtaining the wire rope wrap angle required for the test;

[0120] S4. Cut two loading steel wire ropes 16 required for the test, place them on the double rope groove clamp 65, pass them around the loading contact steel wire rope guide wheel I54 and the loading contact steel wire rope guide wheel II63, and pre-tighten them.

[0121] S5, cut the required fatigue steel wire rope 8, place it on the two loading steel wire ropes installed in S4, connect one end to the tension sensor I5, and the other end to the tension sensor II23;

[0122] S6. Control the servo electric cylinder 2 through the AC servo driver 3 to tighten the fatigue wire rope 8 and provide preload. Observe the value of the pressure sensor and stop when it reaches the set value;

[0123] S7. Setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder 2 through the servo drive controller.

[0124] S8, start the host computer and open the data display interface;

[0125] S9, start the electric cylinder and start the test. The corrosive medium nozzle 11 starts to spray the corrosive medium. At the same time, the tension sensor I5, tension sensor II23, pressure sensor I44, pressure sensor II48 and high-speed camera 9 synchronously collect relevant data through the data acquisition card and transmit it to the host computer display system.

[0126] S10, when the number of test cycles reaches the set value, the servo electric cylinder 2 stops working and the experiment is completed;

[0127] S11. Repeat S1-S7, adjust different wrapping angles, wire rope crossing angles, fatigue loads, contact loads, tensile speeds, corrosive media and slip amplitudes, and repeat S8-S10 to complete the tests under different working conditions;

[0128] S12. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve and dynamic slip amplitude, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

[0129] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-sea drilling rig hoisting wire rope bending friction fatigue test device, characterized in that: It consists of a rack module, a driving module, a rotating module, a lifting module, a fixture module, a contact loading module, a corrosion module, a collection module and a data processing module; The drive module includes a servo electric cylinder and an AC servo driver, which are used to apply fatigue load, stretching speed and control displacement amplitude; the AC servo driver is fixed to the base plate by bolts and connected to the servo electric cylinder by a data line; The rotating module includes a rotating disc and a rotating platform, the rotating disc is welded in the middle of the bottom plate, and bolt holes are evenly arranged every 5° on the rotating module, the rotating module includes a rotating base, a rotating upper platform and a cylindrical vertical guide rail, the rotating base and the rotating disc are connected by fixing bolts, and the cylindrical vertical guide rail includes a cylindrical vertical guide rail I, a cylindrical vertical guide rail II, a cylindrical vertical guide rail III and a cylindrical vertical guide rail IV, which are symmetrically arranged on the rotating upper platform to control the contact crossing angle of the wire rope; The lifting module includes a double-screw mechanism and a lifting platform, which are used to control the contact angle of the wire rope and change the bending curvature of the wire rope; The corrosion module comprises a corrosion medium nozzle, a corrosion medium nozzle base, a corrosion medium liquid guide pipe and a corrosion medium storage box; The clamp module includes a single rope groove clamp and a double rope groove clamp to realize the experiment of the wire rope and different contact friction pairs. The single rope groove clamp and the double rope groove clamp are respectively connected to the upper platform of the lifting platform through bolts and are located at the center of the platform; The contact loading module includes a loading slide rail, a loading plate, a loading wire rope partition, a loading partition and a loading wire rope guide wheel, which are used to apply different contact loads; The acquisition module includes a dynamic force acquisition module and a slip and fatigue broken wire monitoring module. The dynamic force acquisition module includes a tension sensor, a tension sensor connection, a pressure sensor, a pressure sensor connection platform, and a data acquisition card, which are used to detect the tension at both ends of the wire rope and the positive pressure in the positive direction; the slip and fatigue broken wire monitoring module includes a high-speed camera, a camera bracket and a camera bracket base. The high-speed camera is connected to the camera bracket and can be freely rotated 180°. The camera bracket is connected to the camera bracket base by a magnetic magnet, which is convenient for the overall disassembly and installation of the camera; The data processing module includes a host computer, which is used to intuitively display the collected data and process and analyze the data; The rack module includes a bottom plate, support columns, long beams, short beams, reinforcing ribs, guide shafts and guide wheels, which are used to ensure the stability of the test device and carry the drive module, drive module, rotation module, lifting module and fixture module; The contact loading module also includes guide pulleys, namely loading wire rope guide pulley I and loading wire rope guide pulley II, which are symmetrically fixed on the horizontal axis on the upper platform of the lifting platform by bolts, and one end of the wire rope is connected to the loading plate and the other end is connected to the weight.

2. A deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 1, characterized in that: The support columns include support column I, support column II, support column III and support column IV, which have the same structure and are composed of a vertical frame and an oblique frame, and an axle pin hole is set at the upper end of the vertical frame. The support column 1 and support column II are symmetrically arranged along the longitudinal axis of the base plate, and the bottom ends of the vertical frame and the oblique frame are welded to the base plate. The support column III and support column IV are symmetrically arranged along the horizontal axis of the base plate with the support column I and support column II. The servo electric cylinder base is connected to the base plate by bolts and is arranged on the horizontal axis of the base plate, located at the symmetrical center of support column I and support column II.

3. A deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 2, characterized in that: The long cross beams include a long cross beam I and a long cross beam II, and the two ends of the long cross beam I along the longitudinal axis are respectively connected to the high ends of the vertical frames of the support columns I and III, and are kept at the same level; The long cross beam II and the long cross beam I are arranged symmetrically along the longitudinal axis, and the two ends are connected to the high ends of the support column II and the support column IV respectively, and keep the same level. The short cross beam includes a short cross beam I and a short cross beam II. The two ends of the short cross beam I along the horizontal axis of the bottom plate are connected to the high ends of the vertical frames of the support column I and the support column II respectively, and keep the same horizontal height. The two ends of the short cross beam II along the horizontal axis of the bottom plate are respectively connected to the high ends of the vertical frames of the support columns III and IV, and maintain the same horizontal height.

4. A deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 1, characterized in that: The double screw mechanism includes a servo motor, a lifting servo driver, a screw lifting mechanism I and a screw lifting mechanism II, all of which are fixed on the rotating upper end platform by bolts, the lifting servo driver is connected to the servo motor by a data line, and the servo motor is connected to the screw lifting mechanism I and the screw lifting mechanism II by a screw at the same time, the pressure sensor includes a pressure sensor I and a pressure sensor II, the pressure sensor I is connected to the screw lifting mechanism I by an intermediate threaded hole, and the upper end is connected to the lower base of the lifting platform by bolts, the pressure sensor II is connected to the screw lifting mechanism II by an intermediate threaded hole, and the upper end is connected to the lower base of the lifting platform by bolts, and is respectively connected to the data acquisition card by data lines; The lifting platform includes an upper platform, a lower base, a cylindrical slider and a loaded contact wire rope guide wheel. The lower base is connected to the pressure sensor I and the pressure sensor II by bolts. The cylindrical slider includes a cylindrical slider I, a cylindrical slider II, a cylindrical slider III and a cylindrical slider IV, and is respectively connected to the cylindrical vertical guide rail I, the cylindrical vertical guide rail II, the cylindrical vertical guide rail III and the cylindrical vertical guide rail IV.

5. The deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 1 is characterized in that: The loading slide rails include loading slide rail I, loading slide rail II, loading slide rail III and loading slide rail IV, which are symmetrically arranged on the upper platform of the lifting platform and connected by screws; The loading plate includes a loading plate I and a loading plate II. The loading plate I is connected to the loading slide rail I and the loading slide rail IV by bolts. The loading plate II is connected to the loading slide rail II and the loading slide rail IV by bolts. The loading partition includes a loading partition I and a loading partition II, which are respectively connected to the loading plate I and the loading plate II by bolts. The loading wire rope partition includes a loading wire rope partition I and a loading wire rope partition II.

6. A deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 1, characterized in that: The tension sensor includes a tension sensor I and a tension sensor II. One end of the tension sensor I is connected to the servo electric cylinder through the tension sensor I connection, and the other end is connected to the fatigue wire rope, and is also connected to the data acquisition card through a data transmission line. One end of the tension sensor II is connected to the base plate through the tension sensor II connection, and the other end is connected to the fatigue wire rope, and is also connected to the data acquisition card through a data transmission line.

7. The deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to claim 1 is characterized in that: The host computer includes a data display system and a data processing system, which are connected to the acquisition card through a data line to obtain the collected data, analyze and process the data through a self-written program, and display the data through an interface.

8. A deep-sea drilling rig hoisting wire rope bending friction fatigue test method, based on a deep-sea drilling rig hoisting wire rope bending friction fatigue test device according to any one of claims 1 to 7, characterized in that: The experimental steps are as follows: S1. Before the test, connect all sensors to the data acquisition card, adjust all sensors to zero, adjust the high-speed camera to a suitable height, and make corresponding marking points on the surface of the wire rope; S2. Adjust the rotating platform and set the required rotation angle; S3, control the double servo lifting mechanism through the lifting servo driver to raise the lifting platform to the required height and obtain the wire rope wrap angle required for the test; S4. Cut the fatigue wire rope required for the test, place it on a single-groove clamp or a double-groove clamp, connect one end to the tension sensor I, and the other end to the tension sensor II; S5. Control the servo electric cylinder through the AC servo driver to tighten the fatigue wire rope, provide preload force, observe the value of the pressure sensor, and stop when the set value is reached; S6. When the test is the working condition of wire rope and partition and wire rope and wire rope, in the loading module, add the corresponding mass weight to control the contact load of the partition or wire rope and wire rope; If it is other working conditions, jump directly to S7; S7, setting the stretching speed, fatigue load and number of cycles of the servo electric cylinder through the servo drive controller; S8, start the host computer and open the data display interface; S9, start the electric cylinder to start the test, the corrosive medium nozzle starts to spray the corrosive medium, and at the same time, the tension sensor I, tension sensor II, pressure sensor I, pressure sensor II and high-speed camera synchronously collect relevant data through the data acquisition card and transmit it to the upper computer display system; S10, when the number of test cycles reaches the set value, the servo cylinder stops working and the experiment is completed; S11. Repeat S1-S7, adjust different wrapping angles, wire rope crossing angles, fatigue loads, contact loads, tensile speeds and slip amplitudes, and repeat S8-S10 to complete the test under different working conditions; S12. The data obtained by the above sensors are processed through the data processing system of the host computer to obtain the friction coefficient change curve, dynamic slip amplitude and external wire breakage of the wire rope, and then the evolution law of bending fatigue wear of the wire rope under different working conditions is analyzed and explored.

Images