Underwater motor load simulation test device

Abstract

The invention discloses an underwater motor load simulation test device, which comprises a water tank and an axial force loading system, and is characterized in that the axial force loading system is sequentially connected with a pushing and twisting assembly, a front connection telescopic sealing assembly and an output load system; the actual working condition of the underwater motor in the underwater operation process can be simulated, a reference basis is provided for test performance verification of the underwater motor, and high economic value and social benefits are achieved.

Description

Technical Field

[0001] This invention belongs to the field of underwater motor technology, specifically relating to an underwater motor load simulation test device. Background Technology

[0002] Load testing of underwater motors is a key test for evaluating their performance. For special motors operating in underwater environments, sealing performance is considered separately during the design process. To achieve load testing of underwater motors, it is necessary to consider not only the sealing performance of the underwater motor itself, but also the sealing performance of the load.

[0003] The loads used in underwater motor tests are generally not specially designed to be sealed so that they cannot be submerged in water. In extreme cases, the cost of enabling the load to operate while submerged in water is also high.

[0004] Therefore, it is essential to develop a reliable and low-cost underwater motor load testing device. Summary of the Invention

[0005] The purpose of this invention is to provide an underwater motor load simulation test device to overcome the above-mentioned technical defects.

[0006] The technical solution adopted by this invention to solve its technical problem is: an underwater motor load simulation test device, including a water tank and an axial force loading system installed inside the water tank for connecting the underwater motor. The axial force loading system is sequentially connected to a thrust-torsion assembly, a front connecting telescopic seal assembly, and an output load system. The axial force loading system includes a shaft seat installed outside the water tank. A central shaft connected to the output shaft of the underwater motor is installed inside the shaft seat via a deep groove ball bearing and a thrust bearing. A ball screw parallel to the central shaft is also installed inside the shaft seat via a combined bearing. A loading plate is driven by a servo motor and a precision reducer. The loading plate is connected to the thrust bearing and a slide rail, thereby controlling the rotation of the servo motor shaft. The rotational motion is converted into linear motion of the central shaft, ultimately achieving controllable tension and compression bidirectional loading. A rotary seal and an O-ring are installed between the central shaft and the water tank. The push-torque assembly enables independent loading of force and torque, ensuring that the two are not correlated. It is composed of a spline in a rotary sleeve and an output flange. The front connecting telescopic sealing assembly includes a front flexible coupling and a lead screw installed in the front flexible coupling through a transition sleeve. A spherical washer and a nut are installed on the lead screw. The output load system can simulate the loading function of a land-based load system for an underwater motor. It consists of a connecting tail shaft and an eddy current brake connected to the connecting tail shaft through a transition flange.

[0007] The underwater motor load simulation test device further includes a large pressure ring, a tower-shaped telescopic sealing ring, and a small pressure ring on the connecting tail shaft, which can realize the transmission sealing function of the water tank wall between the underwater motor and the load.

[0008] The underwater motor load simulation test device has a T-shaped groove plate arranged at the bottom of the water tank, and the tank wall is respectively arranged with water inlet and outlet, overflow outlet, cable outlet and detachable ladder.

[0009] The underwater motor load simulation test device is described above, in which the tail shaft is supported by a bearing seat on the base.

[0010] The underwater motor load simulation test device is described above, in which the rotating sleeve is supported by a deep groove ball bearing on the base.

[0011] The underwater motor load simulation test device described above has a force sensor installed on its central shaft.

[0012] The beneficial effects of this invention are as follows: First, it avoids the problem that conventional motor load equipment cannot operate normally in water, thus reducing development costs; second, the front connecting telescopic sealing component solves the leakage problem in the transmission process of underwater motor load testing; third, the axial force loading system can simulate the thrust problem brought by the propeller that the underwater motor experiences in actual working conditions; and fourth, the push-torque component realizes independent loading of force and torque, ensuring that the two have no correlation or influence.

[0013] This underwater motor load simulation test device can simulate the actual working conditions of an underwater motor during underwater operation, providing a reference for the test performance verification of underwater motors, and has high economic value and social benefits. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the axial force loading system of the present invention; Figure 4 This is a schematic diagram of axial force loading in this invention; Figure 5 This is a schematic diagram of the push-torque assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the front connecting telescopic sealing assembly of the present invention; Figure 7 This is a schematic diagram of the output load system of the present invention.

[0015] The attached figures are labeled as follows: 1—Water tank, 2—Underwater motor, 2.1—T-slot plate, 2.2—Inlet / outlet, 2.3—Overflow outlet, 2.4—Detachable ladder, 3—Axial force loading system, 3.1—Central shaft, 3.2—Rotary seal, 3.3—O-ring seal, 3.4 / 4.2—Deep groove ball bearing, 3.5—Thrust bearing, 3.6—Force sensor, 3.7—Ball screw, 3.8—Combined bearing, 3.9—Servo motor, 3.10—Precision reducer, 3.11—Loading plate, 3.12 4—Slide rail, 4—Push-torsion assembly, 4.1—Spline, 4.3 / 6.3—Base, 4.4—Rotating sleeve, 4.5—Output flange, 5—Front connecting telescopic seal assembly, 5.1—Front flexible coupling, 5.2—Spherical washer, 5.3—Lead screw, 5.4—Nut, 5.5—Transition sleeve, 5.6—Large pressure ring, 5.7—Tower-type telescopic seal ring, 5.8—Small pressure ring, 6—Output load system, 6.1—Connecting tail shaft, 6.2—Bearing housing, 6.4—Transition flange, 6.5—Eddy current brake. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Reference Figures 1 to 7 As shown, as the first embodiment of the present invention, an underwater motor load simulation test device is disclosed, which relates to the field of underwater motor technology, specifically to a test device that can be used to simulate the operation of an underwater motor 2, including a water tank 1, an underwater motor 2, an axial force loading system 3, a push-torsion assembly 4, a front connecting telescopic sealing assembly 5, an output load system 6, etc.

[0018] The water tank is a container that can store liquid. The main body of the water tank is a frame load-bearing structure. The bottom of the water tank 1 is equipped with a T-shaped groove plate 2.1, and the tank wall is equipped with inlet and outlet 2.2, overflow outlet 2.3, cable outlet and detachable ladder 2.4 and other structures.

[0019] The experimental subject, underwater motor 2, is a special type of motor that can operate in an underwater environment.

[0020] The axial force loading system 3 consists of a central shaft 3.1, a rotary seal ring 3.2, an O-ring seal ring 3.3, a deep groove ball bearing 3.4, a thrust bearing 3.5, a force sensor 3.6, a ball screw 3.7, and a combined bearing 3.8. It drives the loading plate 3.11 through a servo motor 3.9 and a precision reducer 3.10. The loading plate 3.11 is connected to the thrust bearing 3.5 and the slide rail 3.12, converting the rotational motion of the servo motor 3.9 shaft into the linear motion of the central shaft 3.1, ultimately achieving controllable tension and compression bidirectional loading.

[0021] The push-torque assembly consists of a spline 4.1, a deep groove ball bearing 4.2, a base 4.3, a rotating sleeve 4.4, and an output flange 4.5, enabling independent loading of force and torque to ensure that the two are not correlated. The rotating sleeve 4.4 is supported by the deep groove ball bearing 4.2 on the base 4.3.

[0022] The aforementioned front connecting telescopic sealing assembly consists of a front flexible coupling 5.1, a spherical washer 5.2, a lead screw 5.3, a nut 5.4, a transition sleeve 5.5, a large pressure ring 5.6, a tower-shaped telescopic sealing ring 5.7, and a small pressure ring 5.8, which can realize the transmission sealing function of the water tank 1 wall between the underwater motor 2 and the load.

[0023] The output load system 6 consists of a connecting tail shaft 6.1, a bearing housing 6.2, a base 6.3, a transition flange 6.4, and an eddy current brake 6.5, and can simulate the function of a land-based load system loading an underwater motor. The connecting tail shaft 6.1 is supported by the bearing housing 6.2 on the base 6.3.

[0024] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some of the application examples. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An underwater motor load simulation test device, characterized in that: The system includes a water tank (1) and an axial force loading system (3) installed inside the water tank (1) for connecting an underwater motor (2). The axial force loading system (3) is sequentially connected to a push-torsion assembly (4), a front connecting telescopic seal assembly (5), and an output load system (6). The axial force loading system (3) includes a bearing seat installed outside the water tank (1). A central shaft (3.1) connected to the output shaft of the underwater motor (2) is installed in the bearing seat via a deep groove ball bearing (3.4) and a thrust bearing (3.5). A ball screw (3.7) parallel to the central shaft (3.1) is also installed in the bearing seat via a combined bearing (3.8). A loading plate (3.11) is driven by a servo motor (3.9) and a precision reducer (3.10). The loading plate (3.11) is connected to the thrust bearing (3.5) and the slide rail (3.12) to drive the rotation of the shaft of the servo motor (3.9). The motion is converted into linear motion of the central shaft (3.1). A rotary seal (3.2) and an O-ring (3.3) are provided between the central shaft (3.1) and the water tank (1). The push-torque assembly (4) realizes independent loading of force and torque. It is composed of a spline (4.1) in the rotary sleeve (4.4) and an output flange (4.5). The front connecting telescopic sealing assembly (5) includes a front flexible coupling (5.1) and a lead screw (5.3) installed in the front flexible coupling (5.1) through a transition sleeve (5.5). A spherical washer (5.2) and a nut (5.4) are installed on the lead screw (5.3). The output load system (6) simulates the loading function of the underwater motor (2) on land. It consists of a connecting tail shaft (6.1) and an eddy current brake (6.5) connected to the connecting tail shaft (6.1) through a transition flange (6.4).

2. The underwater motor load simulation test device according to claim 1, characterized in that, The aforementioned front connecting telescopic sealing assembly (5) also includes a large pressure ring (5.6), a tower-shaped telescopic sealing ring (5.7), and a small pressure ring (5.8) disposed on the connecting tail shaft (6.1).

3. The underwater motor load simulation test device according to claim 1 or 2, characterized in that, The bottom of the water tank (1) is provided with a T-shaped groove plate (2.1), and the tank wall is provided with an inlet and outlet (2.2), an overflow outlet (2.3), a cable outlet and a detachable ladder (2.4).

4. The underwater motor load simulation test device according to claim 3, characterized in that, The connecting tail shaft (6.1) is supported by a bearing seat (6.2) on the base (6.3).

5. The underwater motor load simulation test device according to claim 4, characterized in that, The rotary sleeve (4.4) is supported by a deep groove ball bearing (4.2) on the base (4.3).

6. The underwater motor load simulation test device according to claim 4, characterized in that, A force sensor (3.6) is installed on the central shaft (3.1).

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