Opposite wear test device, system and method for simulating different working conditions and application

Abstract

The invention discloses a device, a system, a method and an application for simulating an opposite-grinding test under different working conditions. The device comprises a high-temperature and high-pressure sealing box body, wherein the high-temperature and high-pressure sealing box body comprises a back plate, and a workpiece carrier is connected with the back plate; a first rail is arranged on the first end face, away from the back plate, of the workpiece carrier, and the first clamping device set is connected with the first rail. A second end face and a third end face, perpendicular to the first end face, in the workpiece carrier are provided with a second rail and a third rail respectively, and the second clamping device set is connected with the second rail and the third rail respectively. The first clamping device group is used for clamping a first counter-grinding workpiece; a clamping device of the second clamping device set is provided with a clamping mechanism, a rotating mechanism and an electric loading mechanism, and the second clamping device set is used for clamping a second counter-grinding workpiece so as to clamp the second counter-grinding workpiece to enable the outer wall of the second counter-grinding workpiece to abut against the inner wall of the first counter-grinding workpiece. And the second counter-grinding workpiece is clamped to rotate circumferentially and / or move back and forth on the second track and the third track so as to simulate a counter-grinding test.

Description

Technical Field

[0001] This invention relates to the field of oilfield engineering technology, and in particular to a grinding test device, system, method and application for simulating different working conditions. Background Technology

[0002] In the application of rod pump lifting technology in oil wells, the presence of well inclination leads to uneven wear of the sucker rod and tubing, as well as the problem of corrosion exacerbating uneven wear due to different well fluid environments. In the application of electric submersible screw pump lifting technology, the swelling and wear between the stator and rotor under different well fluid environment conditions will cause the oil well pump efficiency to decrease and affect the oil well production. The straightening tools, coating materials, and stator and rotor of electric submersible screw pumps designed and manufactured to solve the problem of uneven wear should be simulated under conditions as close as possible to the actual well conditions before being put into use to verify their process adaptability. Summary of the Invention

[0003] To fill the gap in the technology of multi-directional wear testing of workpieces under simulated real well conditions, and to provide support for actual well applications, this invention provides a wear testing device, system, method and application for simulating wear testing under different working conditions.

[0004] In a first aspect, embodiments of the present invention provide a grinding test device for simulating different working conditions, which may include: a high-temperature and high-pressure sealed chamber, and a workpiece carrier, a first clamping device group and a second clamping device group located in the high-temperature and high-pressure sealed chamber;

[0005] The high-temperature and high-pressure sealed box includes a back plate, and the workpiece carrier is connected to the back plate; a first track is provided on the first end face of the workpiece carrier away from the back plate, and the first clamping assembly is slidably connected to the first track; a second track and a third track are respectively provided on the second end face and the third end face of the workpiece carrier that are perpendicular to the first end face, and the second clamping assembly is slidably connected to the second track and the third track respectively;

[0006] The first clamping device group is used to clamp the first pair of grinding workpieces and fix the first pair of grinding workpieces; the clamping device of the second clamping device group is provided with a clamping mechanism, a rotating mechanism and an electric loading mechanism. The second clamping device group is used to clamp the second pair of grinding workpieces so that the outer wall of the second pair of grinding workpieces abuts against the inner wall of the first pair of grinding workpieces, and clamps the second pair of grinding workpieces to rotate circumferentially and / or reciprocate on the second track and the third track to simulate the grinding test.

[0007] In one embodiment, the device may further include: a rotating wheel, which is connected to the back plate and the workpiece carrier respectively, and the rotating wheel is used to drive the workpiece carrier to rotate at a preset angle to simulate the working conditions of an inclined shaft.

[0008] In another embodiment, the gripper of the second clamping assembly may further include a pressure sensor for monitoring the pressure applied by the electric loading mechanism between the second pair of grinding workpieces and the first pair of grinding workpieces.

[0009] In another embodiment, the first clamping assembly includes two clamps for securing the two ends of the first pair of grinding workpieces, respectively.

[0010] The second clamping assembly includes two clamps for fixing the two ends of the second pair of grinding workpieces respectively, and the pressure applied by the electric loading mechanism to the second pair of grinding workpieces and the first pair of grinding workpieces can be adjusted respectively.

[0011] In another embodiment, the device may further include: an electric stirring rod located at the bottom of the high-temperature and high-pressure sealed chamber for agitating the simulated fluid located within the high-temperature and high-pressure sealed chamber.

[0012] In another embodiment, the device may further include: a level gauge located inside the high-temperature and high-pressure sealed chamber, the level gauge being used to monitor the simulated fluid level inside the high-temperature and high-pressure sealed chamber.

[0013] In another embodiment, the device may further include a temperature sensor located at the bottom of the high-temperature and high-pressure sealed chamber, the temperature sensor being used to monitor the temperature of the simulated fluid located within the high-temperature and high-pressure sealed chamber.

[0014] In a second aspect, embodiments of the present invention provide a grinding test system that simulates different working conditions, which may include: a drive motor, a pressurizing device, a liquid storage tank with a heating grid, a monitoring controller, and a grinding test device for simulating different working conditions as described in the first aspect;

[0015] The monitoring controller is electrically connected to the drive motor, the pressurizing device, the rotating structure of the second clamping assembly in the grinding test device, the electric loading mechanism, the pressure sensor, the electric stirring rod, the level gauge, and the temperature sensor in the grinding test device.

[0016] The drive motor is connected to the rotating wheel in the grinding test device and is used to drive the rotating wheel to rotate;

[0017] The pressurizing device is connected to the high-temperature and high-pressure sealed chamber pipeline in the grinding test device, and is used to pressurize the high-temperature and high-pressure sealed chamber.

[0018] The storage tank is connected to the high-temperature and high-pressure sealed chamber pipeline in the grinding test device, and is used to supply simulated fluid to the high-temperature and high-pressure sealed chamber.

[0019] Thirdly, embodiments of the present invention provide a method for simulating grinding tests under different operating conditions, wherein the grinding test is performed according to the grinding test system for simulating different operating conditions described in the second aspect, and the grinding test method may include:

[0020] The first pair of workpieces to be ground is mounted on the first clamping assembly, and the second pair of workpieces to be ground is mounted on the second clamping assembly.

[0021] The rotation of the rotating wheel is controlled by a monitoring controller and a drive motor to adjust the angle of the workpiece carrier;

[0022] The axial tensile and compressive loading forces of the first pair of grinding workpieces and the second pair of grinding workpieces are adjusted by the monitoring controller, the first clamping group and the second clamping group, respectively, as well as the pressure between the first pair of grinding workpieces and the second pair of grinding workpieces.

[0023] The high-temperature and high-pressure sealed chamber is sealed, and the test simulated fluid is injected into the storage tank. The storage tank is heated by the monitoring controller. After the set temperature is reached, the simulated fluid in the storage tank is injected into the high-temperature and high-pressure sealed chamber. The level of the simulated fluid in the high-temperature and high-pressure sealed chamber is monitored by the level gauge to verify that the simulated fluid immerses the first and second pair of grinding workpieces under test.

[0024] The pressure value inside the high-temperature and high-pressure sealed chamber is adjusted by the monitoring controller and the pressurizing device.

[0025] The monitoring controller is used to set the reciprocating and / or rotational motion parameters of the grippers in the second gripper group, and to set the test time.

[0026] Record the test time and the wear location and degree of wear of the first and second pair of grinding workpieces to form test data and grinding analysis and evaluation report.

[0027] Fourthly, embodiments of the present invention provide an application of a grinding test apparatus for simulating different working conditions as described in any one of claims 1 to 8.

[0028] The beneficial effects of the above-mentioned technical solutions provided in the embodiments of the present invention include at least the following:

[0029] This invention provides a device, system, method, and application for simulating wear testing under different working conditions. This wear testing device can effectively solve the problem that anti-wear tools and screw pump stators and rotors cannot be truly verified for downhole application effects before being tested in the well. Before the tools are lowered into the well, it simulates different environmental conditions such as high temperature, high pressure, and oil-water impurity mixtures in the well, as well as wear conditions under different inclinations, tensile forces, and wear forces, which greatly reduces the cost of downhole testing and ensures the wear resistance quality of the downhole workpieces.

[0030] Furthermore, it can achieve test temperatures of 0-200℃, test pressures of 0-35MPa, and workpiece grinding pressures of 0-1000N, and meet various grinding modes such as tilt angles of 0-90°, lateral reciprocating, rotation, and flat and arc surfaces, thereby improving the accuracy of downhole tool wear resistance evaluation.

[0031] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of the grinding test system simulating different working conditions provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the first end face and the first track of the workpiece carrier provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the second end face (third end face) and the second track (third track) of the workpiece carrier provided in the embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the clamp in the second clamp assembly provided in this embodiment of the invention;

[0038] Figure 5 This is a flowchart of a grinding test method simulating different working conditions provided in an embodiment of the present invention;

[0039] Among them, 1-grinding test device; 2-drive motor; 3-pressurization device; 4-liquid storage tank; 5-monitoring controller;

[0040] 11-High temperature and high pressure sealed chamber; 12-Workpiece carrier; 13-First clamping device group; 14-Second clamping device group; 15-Rotating wheel; 16-Electric stirring rod; 17-Level gauge; 18-Temperature sensor;

[0041] 111-Back plate; 121-First end face; 122-First track; 123-Second end face; 124-Third end face; 125-Second track; 126-Third track; 141-Clamping mechanism; 142-Rotation mechanism; 143-Electric loading mechanism; 144-Pressure sensor. Detailed Implementation

[0042] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The inventors discovered through research that existing downhole tool grinding test methods and devices have the following technical defects: they can only perform material reciprocating friction tests under horizontal working conditions and uniform stress; and they can only perform workpiece reciprocating or rotating grinding tests under normal temperature and pressure. In view of the above technical problems, this invention is proposed to provide a grinding test device, system, method, and application that overcomes or at least partially solves the above problems by simulating different working conditions.

[0046] This invention provides a wear test apparatus for simulating different working conditions. This apparatus is used to simulate multi-directional wear tests of workpieces under real well conditions. (Refer to...) Figures 1-4 As shown, the grinding test device 1 may include: a high-temperature and high-pressure sealed chamber 11, and a workpiece carrier 12, a first clamping assembly 13, and a second clamping assembly 14 located within the high-temperature and high-pressure sealed chamber 11; the high-temperature and high-pressure sealed chamber 11 includes a back plate 111, and the workpiece carrier 12 is connected to the back plate 111; a first track 122 is provided on the first end face 121 of the workpiece carrier 12 facing away from the back plate 111, and the first clamping assembly 13 is slidably connected to the first track 122; a second track 125 and a third track 126 are respectively provided on the second end face 123 and the third end face 124 of the workpiece carrier 12 perpendicular to the first end face 121, and the first track 126 is slidably connected to the first track 122; The two clamping device groups 14 are slidably connected to the second track 125 and the third track 126 respectively; the first clamping device group 13 is used to clamp the first grinding workpiece (not shown in the figure) and fix the first grinding workpiece; the clamping device of the second clamping device group 14 is provided with a clamping mechanism 141, a rotating mechanism 142 and an electric loading mechanism 143. The second clamping device group 14 is used to clamp the second grinding workpiece (not shown in the figure) so that the outer wall of the second grinding workpiece abuts against the inner wall of the first grinding workpiece, and clamps the second grinding workpiece to rotate circumferentially and / or reciprocate on the second track 125 and the third track 126 to simulate the grinding test.

[0047] It should be noted that the main function of the first clamping device group in this embodiment of the invention is to clamp the first pair of grinding workpieces and fix the first pair of grinding workpieces. Therefore, the clamping device in the first clamping device group can be called a fixed workpiece clamping device. The function of the second clamping device group is not only to clamp the second pair of grinding workpieces, but also to drive the second pair of grinding workpieces to move. Therefore, the clamping device in the second clamping device group in this embodiment is a clamping device that integrates reciprocating motion clamping mode and rotary motion clamping mode. This clamping device can be called a moving workpiece clamping device.

[0048] It should also be noted that the high-temperature and high-pressure sealed box in this embodiment of the invention can simulate a high-temperature and high-pressure underground fluid environment to simulate the actual working conditions of underground workpiece grinding; the aforementioned workpiece carrier serves as the carrier for the installation of the first clamping device group and the second clamping device group, which can slide via the tracks (first track, second track, and third track) set on the workpiece carrier; further, it should be noted that the first grinding workpiece held by the first clamping device group is cut into an arc shape during the actual grinding test, while the second grinding workpiece held by the second clamping device group does not need to be cut, and the second grinding workpiece abuts against the inner wall of the first grinding workpiece to simulate the nested grinding condition during actual workpiece operation. (Refer to...) Figure 1 As shown, perpendicular to Figure 1 The workpiece carriers, arranged from far to near, are the workpiece carrier, the first pair of grinding workpieces, and the second pair of grinding workpieces.

[0049] Furthermore, it should be noted that the first pair of grinding workpieces can be oil pipes, and the corresponding second pair of grinding workpieces can be sucker rods; alternatively, the first pair of grinding workpieces can be the stator of an electric submersible screw pump, and the corresponding second pair of grinding workpieces can be a centering tool, etc.

[0050] The above-mentioned grinding device provided in this embodiment of the invention can effectively solve the problem that anti-wear tools and screw pump stators and rotors cannot be truly verified for downhole application effects before going downhole testing. Before the tools are put downhole, the grinding conditions under different environmental conditions such as high temperature, high pressure, and oil-water impurity mixtures, as well as different inclination, tensile stress, and wear stress conditions are simulated, which greatly reduces the cost of downhole testing and ensures the wear resistance quality of the downhole workpiece.

[0051] In an optional embodiment, in order to simulate the working conditions of an inclined shaft, refer to Figure 1 As shown, the aforementioned grinding test device 1 may further include: a rotating wheel 15, which is connected to the back plate 111 and the workpiece carrier 12 respectively. The rotating wheel 15 is used to drive the workpiece carrier 12 to rotate by a preset angle to simulate the working conditions of an inclined shaft. In this embodiment of the invention, the rotating wheel can drive the workpiece carrier to rotate by a preset angle, thereby simulating the workpiece grinding test in an inclined shaft.

[0052] In another alternative embodiment, refer to Figure 4 As shown, the clamps of the second clamping assembly 14 may further include a pressure sensor 144, which is used to monitor the pressure applied by the electric loading mechanism 143 between the second pair of grinding workpieces and the first pair of grinding workpieces. In this embodiment, the pressure sensor is used to monitor the pressure between the grinding workpieces, and can monitor the axial tension, compression, and loading force between the workpieces at all times to complete simulation tests under different working conditions.

[0053] In another alternative embodiment, refer to Figure 1As shown, the first clamping assembly 13 includes two clamps for fixing the two ends of the first pair of grinding workpieces respectively; the second clamping assembly 14 includes two clamps for fixing the two ends of the second pair of grinding workpieces respectively, and the pressure applied between the second pair of grinding workpieces and the first pair of grinding workpieces by the electric loading mechanism 143 can be adjusted respectively. In this embodiment, by setting two clamps, not only can the two ends of the first and second pair of grinding workpieces be fixed, but the pressure applied between the second pair of grinding workpieces and the first pair of grinding workpieces can also be adjusted by the two clamps in the second clamping assembly, simulating grinding tests with different pressure values ​​at different locations under actual working conditions.

[0054] In another alternative embodiment, refer to Figure 1 As shown, the aforementioned grinding test apparatus 1 may further include: an electric stirring rod 16, which is located at the bottom of the high-temperature and high-pressure sealed chamber 11 and is used to stir the simulated fluid inside the high-temperature and high-pressure sealed chamber 11. In this embodiment, the electric stirring rod can stir the simulated fluid inside the high-temperature and high-pressure sealed chamber to avoid the sedimentation of solid particles in the simulated fluid, while simulating the flow conditions of downhole fluid.

[0055] In another alternative embodiment, refer to Figure 1 As shown, the aforementioned grinding test apparatus 1 may further include: a level gauge 17 located inside the high-temperature and high-pressure sealed chamber 11, the level gauge 17 being used to monitor the level of the simulated fluid inside the high-temperature and high-pressure sealed chamber 11. In this embodiment, the level gauge is used to verify whether the simulated fluid completely submerges the grinding workpiece.

[0056] In another alternative embodiment, refer to Figure 1 As shown, the aforementioned grinding test apparatus 1 may further include a temperature sensor 18 located inside and at the bottom of the high-temperature and high-pressure sealed chamber 11. The temperature sensor 18 is used to monitor the temperature of the simulated fluid inside the high-temperature and high-pressure sealed chamber 11. By monitoring the temperature of the simulated fluid inside the high-temperature and high-pressure sealed chamber, the actual operating temperature can be simulated.

[0057] The above-mentioned grinding test device provided in this embodiment of the invention can achieve test temperature of 0-200℃, test pressure of 0-35MPa, and workpiece grinding pressure of 0-1000N, and meet various grinding modes such as tilt angle of 0-90°, lateral reciprocating, rotation, plane, and arc surface, thereby improving the accuracy of downhole tool wear resistance evaluation.

[0058] Based on the same inventive concept, this invention also provides a grinding test system simulating different working conditions, referring to... Figure 1As shown, the grinding test system may include: a drive motor 2, a pressurizing device 3, a storage tank 4 with a heating mesh, a monitoring controller 5, and the grinding test device 1 simulating different working conditions. The monitoring controller 5 is electrically connected to the drive motor 2, the pressurizing device 3, the rotating structure of the second clamping assembly 14 in the grinding test device 1, the electric loading mechanism 143, the pressure sensor 144, the electric stirring rod 16, the level gauge 17, and the temperature sensor 18 in the grinding test device 1. The drive motor 2 is connected to the rotating wheel 15 in the grinding test device 1 to drive the rotating wheel 15 to rotate. The pressurizing device 3 is connected to the high-temperature and high-pressure sealed chamber 11 in the grinding test device 1 via a pipeline to pressurize the high-temperature and high-pressure sealed chamber 11. The storage tank 4 is connected to the high-temperature and high-pressure sealed chamber 11 in the grinding test device 1 via a pipeline to supply simulated fluid to the high-temperature and high-pressure sealed chamber 11.

[0059] It should be noted that the aforementioned pressurization device is connected to the high-temperature, high-pressure sealed enclosure via pipelines and is equipped with a pressure regulating valve and a pressure gauge. The aforementioned liquid storage tank is connected to the high-temperature, high-pressure sealed enclosure via inlet and outlet pipelines, which are equipped with valves and flow meters. The liquid storage tank is equipped with a heating grid and a temperature sensor, and is connected to a monitoring controller via an electrical circuit.

[0060] Based on the same inventive concept, this embodiment of the invention also provides a method for simulating wear tests under different operating conditions. This method conducts wear tests using the aforementioned wear test system simulating different operating conditions. Tools such as tubing are fixed to the clamps of the first clamping assembly, while moving workpieces such as sucker rods, screw pump rotors, and anti-wear tools are fixed to the clamps of the second clamping assembly. A storage tank and a pressurizing device are used to simulate the near-wellbore environment within a high-temperature, high-pressure sealed chamber. A real-time monitoring controller sets the workpiece wear motion pattern, and a drive motor drives the workpiece movement. Simultaneously, the real-time monitoring controller monitors the data. (Refer to...) Figure 5 As shown, the grinding test method may specifically include the following steps:

[0061] Step S51: Install the first pair of grinding workpieces on the first clamping assembly, and install the second pair of grinding workpieces on the second clamping assembly.

[0062] In a specific example, the tubing or the stator of the electric submersible screw pump can be mounted on the workpiece carrier (workpiece clamping table) and fixed at both ends by the first clamping unit (fixed workpiece clamping unit). The sucker rod, straightening tool, etc. can be fixed on the second clamping unit (moving workpiece clamping unit) by reciprocating clamping mode, or the screw pump rotor, etc. can be fixed by rotating clamping mode.

[0063] Step S52: Control the rotation of the rotating wheel by monitoring the controller and drive motor to adjust the angle of the workpiece carrier.

[0064] Step S53: Adjust the axial tensile and compressive loading forces of the first and second grinding workpieces respectively through the monitoring controller, the first clamping unit group, and the second clamping unit group, as well as adjust the pressure between the first and second grinding workpieces. Adjust and fix the angle of the wheel mechanism by implementing the monitoring and control module, and adjust the vertical and axial loading forces of the moving workpiece clamping unit respectively. Data is transmitted through pressure sensors to the real-time monitoring and control module to monitor the axial tensile and compressive loading forces of the workpieces and the vertical grinding loading forces at both ends of the workpieces.

[0065] Step S54: Seal the high-temperature and high-pressure sealed chamber, inject the test simulated fluid into the storage tank, heat the storage tank through the monitoring controller, and after reaching the set temperature, inject the simulated fluid in the storage tank into the high-temperature and high-pressure sealed chamber and monitor the simulated fluid level in the high-temperature and high-pressure sealed chamber through the level gauge to verify that the simulated fluid immerses the first pair of grinding workpieces and the second pair of grinding workpieces being tested.

[0066] In a specific example, this step can be implemented by sealing the high-temperature and high-pressure sealed chamber, pouring the test environment liquid (oil, water, wax, etc.) into the storage tank, setting the heating temperature of the storage tank through the real-time monitoring and control module, opening the pipeline valve after reaching the expected temperature, and determining whether the liquid has completely submerged the test workpiece through the level gauge (level sensor).

[0067] In steps S53 and S54 above, the environmental condition liquid is a liquid with arbitrary combination of contents and arbitrary physical properties that simulates the actual conditions of an oil well. The heating temperature range of the storage tank is 0-200℃, the pressurization range of the pressurization device is 0-35MPa, the vertical loading force range of the loading mechanism is 0-1000N, and the axial loading force range is -1000~1000N (positive and negative indicate compression along or opposite to the axial direction of the workpiece).

[0068] Step S55: Adjust the pressure value inside the high-temperature and high-pressure sealed chamber by monitoring the controller and pressurizing device.

[0069] Step S56: Set the reciprocating and / or rotational motion parameters of the grippers in the second gripper group through the monitoring controller, and set the test time.

[0070] Step S57: Record the test time and the wear location and degree of wear of the first and second pair of grinding workpieces to form test data and grinding analysis and evaluation report.

[0071] Based on the same inventive concept, this embodiment of the invention also provides an application of the above-mentioned grinding test device for simulating different working conditions.

[0072] For a detailed description of the application and beneficial effects of the above-mentioned systems, methods and grinding test devices provided in the embodiments of the present invention, please refer to the specific description of the grinding test device above. The embodiments of the present invention will not be repeated here.

[0073] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. This disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A grinding test apparatus simulating different working conditions, characterized in that, include: The high-temperature and high-pressure sealed chamber, and the workpiece carrier, the first clamping device group and the second clamping device group located inside the high-temperature and high-pressure sealed chamber; The high-temperature and high-pressure sealed box includes a back plate, and the workpiece carrier is connected to the back plate; a first track is provided on the first end face of the workpiece carrier away from the back plate, and the first clamping assembly is slidably connected to the first track; a second track and a third track are respectively provided on the second end face and the third end face of the workpiece carrier that are perpendicular to the first end face, and the second clamping assembly is slidably connected to the second track and the third track respectively; The first clamping device group is used to clamp the first pair of grinding workpieces and fix the first pair of grinding workpieces; the clamping device of the second clamping device group is provided with a clamping mechanism, a rotating mechanism and an electric loading mechanism. The second clamping device group is used to clamp the second pair of grinding workpieces so that the outer wall of the second pair of grinding workpieces abuts against the inner wall of the first pair of grinding workpieces, and clamps the second pair of grinding workpieces to rotate circumferentially and / or reciprocate on the second track and the third track to simulate the grinding test.

2. The apparatus according to claim 1, characterized in that, The device further includes a rotating wheel, which is connected to the back plate and the workpiece carrier respectively. The rotating wheel is used to drive the workpiece carrier to rotate at a preset angle to simulate the working conditions of an inclined shaft.

3. The apparatus according to claim 1, characterized in that, The second clamping assembly further includes a pressure sensor for monitoring the pressure applied by the electric loading mechanism between the second pair of grinding workpieces and the first pair of grinding workpieces.

4. The apparatus according to claim 3, characterized in that, The first clamping assembly includes two clamps for fixing the two ends of the first pair of grinding workpieces respectively; The second clamping assembly includes two clamps for fixing the two ends of the second pair of grinding workpieces respectively, and the pressure applied by the electric loading mechanism to the second pair of grinding workpieces and the first pair of grinding workpieces can be adjusted respectively.

5. The apparatus according to any one of claims 1 to 4, characterized in that, The device further includes an electric stirring rod located at the bottom of the high-temperature and high-pressure sealed chamber, used to agitate the simulated fluid inside the high-temperature and high-pressure sealed chamber.

6. The apparatus according to any one of claims 1 to 4, characterized in that, The device further includes a level gauge located inside the high-temperature and high-pressure sealed chamber, the level gauge being used to monitor the simulated fluid level inside the high-temperature and high-pressure sealed chamber.

7. The apparatus according to any one of claims 1 to 4, characterized in that, The device further includes a temperature sensor located at the bottom of the high-temperature and high-pressure sealed chamber, the temperature sensor being used to monitor the temperature of the simulated fluid located inside the high-temperature and high-pressure sealed chamber.

8. A grinding test system simulating different working conditions, characterized in that, include: The device includes a drive motor, a pressurizing device, a liquid storage tank with a heating grid, a monitoring controller, and a grinding test device for simulating different working conditions as described in any one of claims 1 to 7. The monitoring controller is electrically connected to the drive motor, the pressurizing device, the rotating structure of the second clamping assembly in the grinding test device, the electric loading mechanism, the pressure sensor, the electric stirring rod, the level gauge, and the temperature sensor in the grinding test device. The drive motor is connected to the rotating wheel in the grinding test device and is used to drive the rotating wheel to rotate; The pressurizing device is connected to the high-temperature and high-pressure sealed chamber pipeline in the grinding test device, and is used to pressurize the high-temperature and high-pressure sealed chamber. The storage tank is connected to the high-temperature and high-pressure sealed chamber pipeline in the grinding test device, and is used to supply simulated fluid to the high-temperature and high-pressure sealed chamber.

9. A method for simulating grinding tests under different working conditions, characterized in that, The grinding test system simulating different working conditions according to claim 8 is used to conduct grinding tests, wherein the grinding test method includes: The first pair of workpieces to be ground is mounted on the first clamping assembly, and the second pair of workpieces to be ground is mounted on the second clamping assembly. The rotation of the rotating wheel is controlled by a monitoring controller and a drive motor to adjust the angle of the workpiece carrier; The axial tensile and compressive loading forces of the first pair of grinding workpieces and the second pair of grinding workpieces are adjusted by the monitoring controller, the first clamping group and the second clamping group, respectively, as well as the pressure between the first pair of grinding workpieces and the second pair of grinding workpieces. The high-temperature and high-pressure sealed chamber is sealed, and the test simulated fluid is injected into the storage tank. The storage tank is heated by the monitoring controller. After the set temperature is reached, the simulated fluid in the storage tank is injected into the high-temperature and high-pressure sealed chamber. The level of the simulated fluid in the high-temperature and high-pressure sealed chamber is monitored by the level gauge to verify that the simulated fluid immerses the first and second pair of grinding workpieces under test. The pressure value inside the high-temperature and high-pressure sealed chamber is adjusted by the monitoring controller and the pressurizing device. The monitoring controller is used to set the reciprocating and / or rotational motion parameters of the grippers in the second gripper group, and to set the test time. Record the test time and the wear location and degree of wear of the first and second pair of grinding workpieces to form test data and grinding analysis and evaluation report.

10. Application of a grinding test apparatus for simulating different working conditions as described in any one of claims 1 to 8.

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