Loading device and loading method for underwater large-torque motor in pressure environment

By designing the load device of hydraulic system and overflow valve in underwater high torque motor pressure environment, the problem of testing the load performance of deep-sea drilling drive motors in underwater operation environment is solved, and the payload test is realized under underwater pressure environment , provides a compact and reliable test method.

CN119199520APending Publication Date: 2024-12-27CHINA SHIP SCIENTIFIC RESEARCH CENTER +1
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Patent Information

Application Number
CN202411323132.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

The prior art is difficult to effectively test the load performance of deep-sea drilling drive motors in underwater operating environments, especially due to the difficulty in finding matching ultra-long pressure chambers, and the lack of testing equipment in dedicated pressure environments.

Method used

A load device under pressure environment of underwater large torque motor is designed, using a capsule-like large pressure vessel, built-in hydraulic system and coupling, and the load loading of the test motor is achieved through hydraulic motors and overflow valves, combined with underwater lighting The lights and cameras are tested, and the hydraulic system consists of a hydraulic motor, a pressure regulating valve group, a relief valve and an electric motor. The pressure is adjusted by controlling the hydraulic pump and relief valve to achieve load loading.

Benefits of technology

It provides a compact and reasonable testing method that can effectively test the load capacity of a large torque motor in an underwater pressure environment. It is more reliable than electronic testing equipment, convenient to operate, and is suitable for load testing in underwater pressure environments.

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Abstract

The invention relates to a loading device and a loading method for an underwater large-torque motor in a pressure environment, and the device comprises a pressure chamber, a horizontally-arranged test motor is installed in the pressure chamber, the output end of the test motor is connected with a hydraulic motor through a coupler, an underwater illuminating lamp and an underwater camera are also installed in the pressure chamber, the pressure chamber is filled with water, and the hydraulic motor is connected with the underwater illuminating lamp through a coupler. A cable of the test motor is led out through the cabin penetrating part and connected to the test motor control cabinet, cables of the underwater lighting lamp and the underwater camera are led out through the same cabin penetrating part and connected to the underwater camera system control cabinet, and a cable of the hydraulic motor is led out through the same cabin penetrating part and connected to the hydraulic system. The large torque of the test motor is tested in the underwater pressure environment, a new test method is provided for testing the load capacity of the large torque motor in the underwater pressure environment, and the hydraulic test equipment provided by the invention has higher reliability compared with electronic test equipment.
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Description

Technical Field

[0001] The present invention relates to the technical field of motor testing devices, and in particular to a loading device and a loading method under an underwater high-torque motor pressure environment. Background Art

[0002] The motor towing test is a key test method used to evaluate the load performance of motors and is widely used in motor selection, design, quality inspection and fault analysis. During the test, the motor to be tested is fixed and driven by a power supply, and different load conditions are simulated by a load device to evaluate its performance and quality. The load device may include fan load, water pump load and motor load, and the specific selection depends on the test environment and working environment. However, for special motors in underwater working environments, such as drive motors for deep-sea drilling, the test requirements are different. This type of motor is usually slender and cylindrical, with a small outer diameter but a length of up to 6 to 15 meters. Due to the size limitations of the pipe column structure, it is difficult to find a matching extra-long pressure chamber, and there is no need to develop a special pressure chamber for the dual-motor towing test specifically for this type of test. Summary of the invention

[0003] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a load device and loading method for an underwater high-torque motor under pressure environment, aiming to use hydraulic technology to design a load device that provides high-torque and stable torque output, and to provide a new test method for testing the load capacity of high-torque motors in underwater pressure environments, which can adapt to underwater high-torque motors that carry out load tests in pressure environments.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A load device under an underwater high-torque motor pressure environment comprises a pressure chamber, a horizontally arranged test motor is installed inside the pressure chamber, an output end of the test motor is connected to a hydraulic motor through a coupling, an underwater lighting lamp and an underwater camera are also installed in the pressure chamber, the pressure chamber is filled with water, the cable of the test motor is led out through a chamber penetration piece and connected to a test motor control cabinet, the cables of the underwater lighting lamp and the underwater camera are led out through the same chamber penetration piece and connected to an underwater camera system control cabinet, and the cable of the hydraulic motor is led out through the same chamber penetration piece and connected to a hydraulic system;

[0006] The structure of the hydraulic system is: including a hydraulic motor, a hydraulic system control cabinet, a pressure regulating valve group, a hydraulic pump, a No. 1 overflow valve, a No. 2 overflow valve, a hydraulic cooling circuit and an electric motor. The hydraulic system control cabinet is connected to the motor through a control cable, and the motor is connected to the hydraulic pump. The output end of the hydraulic pump branches out with three hydraulic pipelines, which are respectively connected to the pressure regulating valve group, the hydraulic motor and the No. 1 overflow valve. The other end of the pressure regulating valve group is connected to the oil tank, and the other end of the hydraulic motor is connected to the No. 2 overflow valve. The other ends of the No. 1 overflow valve and the No. 2 overflow valve are connected to the oil tank at the same time, and the oil tank is connected to the hydraulic cooling circuit 12.

[0007] Its further technical solution is:

[0008] The pressure cabin adopts a large capsule-shaped pressure container.

[0009] The outside of the pressure chamber is connected to a pressurizing device, which realizes the injection and discharge of pressurized water.

[0010] The test motor adopts a slender strip structure.

[0011] The set pressure value of the No. 2 relief valve is greater than the set pressure value of the No. 1 relief valve.

[0012] When the pressure value on the left side of the No. 2 relief valve is greater than the set pressure value, the No. 2 relief valve opens, and a pressure difference is formed at both ends of the hydraulic motor. The pressure difference multiplied by the unit torque of the hydraulic motor is the load size, thereby realizing the load loading of the test motor.

[0013] It also includes a fixed frame arranged inside the pressure chamber, a test motor, a coupling and a hydraulic motor are installed inside the fixed frame, and an underwater lighting lamp and an underwater camera are installed outside the fixed frame.

[0014] A method for loading a load device under an underwater high-torque motor pressure environment includes the following operation procedures:

[0015] Step 1: Preparation;

[0016] Install the load device and connect all lines and pipelines;

[0017] Step 2: Water injection;

[0018] Fill the pressure chamber with water until it is full of water and pressurized to the target pressure;

[0019] Step 3: Adjust the pressure;

[0020] Set the set pressure of No. 1 relief valve and No. 2 relief valve;

[0021] Step 4: Hydraulic system works;

[0022] The hydraulic system is powered on, the hydraulic system control cabinet controls the motor to rotate, the motor drives the hydraulic pump to work, and the hydraulic oil circuit reaches the target pressure through the pressure regulating valve group. At this time, the No. 1 relief valve and the No. 2 relief valve are closed, and the hydraulic motor does not rotate;

[0023] Step 5: Loading work;

[0024] The test motor is powered on and drives the hydraulic motor to rotate. When the pressure value on the left side of the No. 2 relief valve is greater than the set pressure value, the No. 2 relief valve opens and a pressure difference is formed at both ends of the hydraulic motor. The pressure difference multiplied by the unit torque of the hydraulic motor is the load size, thereby realizing the load loading of the test motor.

[0025] The beneficial effects of the present invention are as follows:

[0026] The invention has a compact and reasonable structure and is easy to operate. It can perform high-torque tests on test motors in an underwater pressure environment and provide a new test method for testing the load capacity of high-torque motors in an underwater pressure environment. The proposed hydraulic test equipment is more reliable than electronic test equipment.

[0027] In the present invention, the output shaft of the test motor is connected to the hydraulic motor through a coupling, installed inside a fixed frame, and arranged at a suitable position in a suitable pressure cabin with an underwater lighting lamp and an underwater camera. The test motor cable, the lower lighting lamp and the underwater camera are led out through the cabin penetration piece and connected to their respective control cabinets. The hydraulic motor is led out through the cabin penetration piece and connected to the hydraulic system. The hydraulic system control cabinet controls the rotation of the motor, and the motor drives the hydraulic pump to work. When the oil circuit pressure is the set value, the relief valve is closed, and the hydraulic motor does not rotate. The set pressure value of the relief valve B is set, and the test motor drives the hydraulic motor to rotate. When the pressure value on the left side of the No. 2 relief valve is greater than the set pressure value, the No. 2 relief valve is opened, and a pressure difference is formed at both ends of the hydraulic motor. The pressure difference multiplied by the unit torque of the hydraulic motor is the load size, thereby realizing load loading on the test motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the installation of the test motor of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the underwater camera system of the present invention.

[0031] Figure 4 It is a structural schematic diagram of the hydraulic system of the present invention.

[0032] Among them: 1. Test motor; 2. Coupling; 3. Underwater lighting; 4. Underwater camera; 5. Hydraulic motor; 6. Test motor control cabinet; 7. Hydraulic system control cabinet; 8. Pressure regulating valve group; 9. Hydraulic pump; 10. No. 1 overflow valve; 11. No. 2 overflow valve; 12. Hydraulic cooling circuit; 13. Underwater camera system control cabinet; 14. Penetration parts; 15. Pressure cabin; 16. Electric motor; 17. Fixed frame; 18. Oil tank. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0034] like Figure 1-Figure 4 As shown, the load device under the underwater large torque motor pressure environment of this embodiment includes a pressure chamber 15, a horizontally arranged test motor 1 is installed inside the pressure chamber 15, the output end of the test motor 1 is connected to the hydraulic motor 5 through the coupling 2, an underwater lighting lamp 3 and an underwater camera 4 are also installed in the pressure chamber 15, the pressure chamber 15 is filled with water, the cable of the test motor 1 is led out through the chamber penetration piece 14 and connected to the test motor control cabinet 6, the cables of the underwater lighting lamp 3 and the underwater camera 4 are led out through the same chamber penetration piece 14 and connected to the underwater camera system control cabinet 13, and the cable of the hydraulic motor 5 is led out through the same chamber penetration piece 14 and connected to the hydraulic system;

[0035] The structure of the hydraulic system is: including a hydraulic motor 5, a hydraulic system control cabinet 7, a pressure regulating valve group 8, a hydraulic pump 9, a No. 1 overflow valve 10, a No. 2 overflow valve 11, a hydraulic cooling circuit 12 and an electric motor 16. The hydraulic system control cabinet 7 is connected to the electric motor 16 through a control cable, and the electric motor 16 is connected to the hydraulic pump 9. The output end of the hydraulic pump 9 branches out with three hydraulic pipelines, which are respectively connected to the pressure regulating valve group 8, the hydraulic motor 5 and the No. 1 overflow valve 10. The other end of the pressure regulating valve group 8 is connected to the oil tank 18, and the other end of the hydraulic motor 5 is connected to the No. 2 overflow valve 11. The other ends of the No. 1 overflow valve 10 and the No. 2 overflow valve 11 are simultaneously connected to the oil tank 18, and the oil tank 18 is connected to the hydraulic cooling circuit 12.

[0036] The pressure chamber 15 is a large capsule-shaped pressure vessel.

[0037] The outside of the pressure chamber 15 is connected to a pressurizing device, which realizes the injection and discharge of pressurized water.

[0038] The test motor 1 adopts a slender strip structure.

[0039] The set pressure value of the No. 2 relief valve 11 is greater than the set pressure value of the No. 1 relief valve 10.

[0040] When the pressure value on the left side of the No. 2 relief valve 11 is greater than the set pressure value, the No. 2 relief valve 11 opens, and a pressure difference is formed at both ends of the hydraulic motor 5. The pressure difference multiplied by the unit torque of the hydraulic motor 5 is the load size, thereby realizing the load loading of the test motor 1.

[0041] It also includes a fixed frame 17 arranged inside the pressure chamber 15, the test motor 1, the coupling 2 and the hydraulic motor 5 are installed inside the fixed frame 17, and the underwater lighting 3 and the underwater camera 4 are installed outside the fixed frame 17.

[0042] The loading method of the load device under the underwater high-torque motor pressure environment of this embodiment includes the following operation process:

[0043] Step 1: Preparation;

[0044] Install the load device and connect all lines and pipelines;

[0045] Step 2: Water injection;

[0046] Filling the pressure chamber 15 with water until the pressure chamber 15 is filled with water and pressurized to a target pressure;

[0047] Step 3: Adjust the pressure;

[0048] Set the set pressures of the No. 1 relief valve 10 and the No. 2 relief valve 11;

[0049] Step 4: Hydraulic system works;

[0050] The hydraulic system is powered on, the hydraulic system control cabinet 7 controls the motor 16 to rotate, the motor drives the hydraulic pump 9 to work, and the hydraulic oil circuit reaches the target pressure through the pressure regulating valve group 8. At this time, the No. 1 relief valve 10 and the No. 2 relief valve 11 are closed, and the hydraulic motor 5 does not rotate;

[0051] Step 5: Loading work;

[0052] The test motor 1 is powered on, and drives the hydraulic motor 5 to rotate. When the pressure value on the left side of the No. 2 relief valve 11 is greater than the set pressure value, the No. 2 relief valve 11 opens, and a pressure difference is formed at both ends of the hydraulic motor 5. The pressure difference multiplied by the unit torque of the hydraulic motor 5 is the load size, thereby realizing load loading on the test motor 1.

[0053] The specific structure and function of the load device under the underwater high-torque motor pressure environment described in the present invention are as follows: it mainly includes a coupling 2, an underwater lighting lamp 3, an underwater camera 4, a hydraulic motor 5, a test motor control cabinet 6, a hydraulic system control cabinet 7, a pressure regulating valve group 8, a hydraulic pump 9, a No. 1 overflow valve 10, a No. 2 overflow valve 11, a hydraulic cooling circuit 12, an underwater camera system control cabinet 13, a cabin penetration part 14, a pressure cabin 15, an electric motor 16, a fixed frame 17, and an oil tank 18.

[0054] The output shaft of the test motor 1 is connected to the hydraulic motor 5 through the coupling 2 , and is arranged at a suitable position in a suitable pressure chamber 15 together with the underwater lighting 3 and the underwater camera 4 .

[0055] The pressure chamber 15 is filled with water and pressurized to the target pressure.

[0056] The cable of the test motor 1 is led out through the penetration piece 14 and connected to the test motor control cabinet 6, the underwater lighting 3 and the underwater camera 4 are led out through the penetration piece 14 and connected to the underwater camera system control cabinet 13, and the hydraulic motor 5 is led out through the penetration piece 14 and connected to the hydraulic system.

[0057] The pressure chamber 15 is a large pressure vessel similar to a capsule, in which a slender cylindrical underwater motor can be placed. The pressure chamber 15 is connected to the outside and a pressurizing device, and can realize the injection and discharge of pressurized water.

[0058] Among them, the hydraulic system is composed of a hydraulic motor 5, a hydraulic system control cabinet 7, a pressure regulating valve group 8, a hydraulic pump 9, a No. 1 overflow valve 10, a No. 2 overflow valve 11, a hydraulic cooling circuit 12, and an electric motor 16.

[0059] The hydraulic system control cabinet 7 is connected to the motor 16 through a control cable, and the motor 16 is connected to the hydraulic pump 9. The hydraulic pump 9 branches out three hydraulic pipelines, which are respectively connected to the pressure regulating valve group 8, the hydraulic motor 5 and the No. 1 relief valve 10. The other end of the hydraulic pipeline of the pressure regulating valve group 8 is connected to the oil tank 18, and the other end of the hydraulic pipeline of the hydraulic motor 5 is connected to the No. 2 relief valve 11. The set pressure value of the No. 2 relief valve 11 is greater than the set pressure of the No. 1 relief valve 10. The other end of the hydraulic pipeline of the No. 1 relief valve 10 and the No. 2 relief valve 11 is connected to the oil tank 18.

[0060] An oil tank 18 is connected to the hydraulic cooling circuit 12 .

[0061] The number and installation position of the underwater cameras 4 and the underwater lighting lamps 3 can be adjusted according to the space size of the pressure chamber 15 and the requirements of the test content.

[0062] In actual working process:

[0063] (I) During installation:

[0064] The output shaft of the test motor 1 is connected to the hydraulic motor 5 through the coupling 2, and is arranged at a suitable position in a suitable pressure chamber 15 with the underwater lighting lamp 3 and the underwater camera 4. The pressure chamber 15 is filled with water and pressurized to the target pressure. The cable of the test motor 1 is led out through the chamber member 14 and connected to the test motor control cabinet 6, the underwater lighting lamp 3 and the underwater camera 4 are led out through the chamber member 14 and connected to the underwater camera system control cabinet 13, and the hydraulic motor 5 is led out through the chamber member 14 and connected to the hydraulic system. The hydraulic control cabinet is connected to the motor through the control cable of the motor, and the motor is connected to the hydraulic pump 9. The hydraulic pump 9 divides three hydraulic pipelines, which are respectively connected to the pressure regulating valve group 8, the hydraulic motor 5 and the first relief valve 10. The other end of the hydraulic pipeline of the pressure regulating valve group 8 is connected to the oil tank 18, and the other end of the hydraulic pipeline of the hydraulic motor 5 is connected to the second relief valve 11. The set pressure value of the second relief valve 11 is greater than the set pressure of the first relief valve 10. The other ends of the No. 1 relief valve 10 and the No. 2 relief valve 11 are connected to the oil tank 18 through hydraulic pipelines. The oil tank 18 is connected to the hydraulic cooling circuit 12.

[0065] (II) During operation:

[0066] According to the attached Figure 1 Connect the lines and pipelines, fill the pressure chamber 15 with water and pressurize it to the target pressure. Set the set pressures of the No. 1 relief valve 10 and the No. 2 relief valve 11, where the pressure value of the No. 2 relief valve 11 is greater than the pressure value of the No. 1 relief valve 10 and greater than the pressure value of the hydraulic oil circuit. The hydraulic system is powered on, and the hydraulic system control cabinet 7 controls the motor 16 to rotate, and the motor drives the hydraulic pump 9 to work, so that the hydraulic oil circuit reaches the target pressure through the pressure regulating valve group 8. At this time, the No. 1 relief valve 10 and the No. 2 relief valve 11 are closed, and the hydraulic motor 5 does not rotate. The test motor 1 is powered on, and the test motor 1 drives the hydraulic motor 5 to rotate. When the pressure value on the left side of the No. 2 relief valve 11 is greater than the set pressure value, the No. 2 relief valve 11 opens, and a pressure difference is formed at both ends of the hydraulic motor 5. The pressure difference multiplied by the unit torque of the hydraulic motor 5 is the load size, thereby realizing the load loading of the test motor 1.

[0067] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A load device under underwater high torque motor pressure environment, characterized by: The pressure chamber (15) comprises a pressure chamber (15), wherein a horizontally arranged test motor (1) is installed inside the pressure chamber (15), the output end of the test motor (1) is connected to a hydraulic motor (5) via a coupling (2), an underwater lighting lamp (3) and an underwater camera (4) are also installed inside the pressure chamber (15), the pressure chamber (15) is filled with water, the cables of the test motor (1) are led out through a chamber penetration component (14) and connected to a test motor control cabinet (6), the cables of the underwater lighting lamp (3) and the underwater camera (4) are led out through the same chamber penetration component (14) and connected to an underwater camera system control cabinet (13), and the cables of the hydraulic motor (5) are led out through the same chamber penetration component (14) and connected to a hydraulic system; The structure of the hydraulic system is as follows: it comprises a hydraulic motor (5), a hydraulic system control cabinet (7), a pressure regulating valve group (8), a hydraulic pump (9), a No. 1 overflow valve (10), a No. 2 overflow valve (11), a hydraulic cooling circuit (12) and an electric motor (16). The hydraulic system control cabinet (7) is connected to the electric motor (16) through a control cable, the electric motor (16) is connected to the hydraulic pump (9), the output end of the hydraulic pump (9) branches with three hydraulic pipelines, which are respectively connected to the pressure regulating valve group (8), the hydraulic motor (5) and the No. 1 overflow valve (10), the other end of the pressure regulating valve group (8) is connected to the oil tank (18), the other end of the hydraulic motor (5) is connected to the No. 2 overflow valve (11), the other ends of the No. 1 overflow valve (10) and the No. 2 overflow valve (11) are simultaneously connected to the oil tank (18), and the oil tank (18) is connected to the hydraulic cooling circuit 12.

2. A load device for an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: The pressure chamber (15) is a large capsule-shaped pressure container.

3. The load device for an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: The outside of the pressure chamber (15) is connected to a pressurizing device, which enables the injection and discharge of pressurized water.

4. The load device for an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: The test motor (1) adopts a slender strip structure.

5. The load device under the pressure environment of an underwater high-torque motor as claimed in claim 1, characterized in that: The set pressure value of the No. 2 relief valve (11) is greater than the set pressure value of the No. 1 relief valve (10).

6. The load device for an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: When the pressure value on the left side of the No. 2 relief valve (11) is greater than the set pressure value, the No. 2 relief valve (11) opens, and a pressure difference is formed at both ends of the hydraulic motor (5). The pressure difference multiplied by the unit torque of the hydraulic motor (5) is the load size, thereby realizing the load loading of the test motor (1).

7. The load device for an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: It also includes a fixed frame (17) arranged inside the pressure chamber (15), a test motor (1), a coupling (2) and a hydraulic motor (5) are installed inside the fixed frame (17), and an underwater lighting lamp (3) and an underwater camera (4) are installed outside the fixed frame (17).

8. A method for loading a load device under an underwater high-torque motor pressure environment as claimed in claim 1, characterized in that: The following operation procedures are included: Step 1: Preparation; Install the load device and connect all lines and pipelines; Step 2: Water injection; Filling the pressure chamber (15) with water until the pressure chamber (15) is filled with water and pressurized to a target pressure; Step 3: Adjust the pressure; Setting the set pressures of the No. 1 relief valve (10) and the No. 2 relief valve (11); Step 4: Hydraulic system works; The hydraulic system is powered on, the hydraulic system control cabinet (7) controls the motor (16) to rotate, the motor drives the hydraulic pump (9) to work, and the hydraulic oil circuit reaches the target pressure through the pressure regulating valve group (8). At this time, the No. 1 relief valve (10) and the No. 2 relief valve (11) are closed, and the hydraulic motor (5) does not rotate; Step 5: Loading work; The test motor (1) is powered on, and the test motor (1) drives the hydraulic motor (5) to rotate. When the pressure value on the left side of the No. 2 relief valve (11) is greater than the set pressure value, the No. 2 relief valve (11) opens, and a pressure difference is formed at both ends of the hydraulic motor (5). The pressure difference multiplied by the unit torque of the hydraulic motor (5) is the load size, thereby realizing the load loading of the test motor (1).