Underwater motor system

Abstract

The utility model provides an underwater motor system. The underwater motor system comprises a motor unit and a pressure compensation unit. The motor unit comprises a land motor and a shell with a watertight containing cavity, the land motor is arranged in the watertight containing cavity, the pressure compensation unit is communicated with the containing cavity and used for compensating the difference between the internal pressure intensity and the external pressure intensity of the containing cavity, and the land motor takes electricity from power supply equipment located on the outer side of the shell. According to the utility model, the land motor is arranged in the accommodating cavity, the waterproof problem of the underwater motor is solved, the pressure compensation unit is communicated with the accommodating cavity, and the pressure compensation unit is utilized to compensate the difference between the internal pressure and the external pressure of the accommodating cavity, so that the structure of the shell cannot be damaged due to the difference between the internal pressure and the external pressure, and the service life of the shell is prolonged. The basic reliability of the underwater motor is ensured, an underwater motor scheme based on a land motor is provided, the structure is simple, and the manufacturing and using cost of the underwater motor is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of underwater motor technology, and in particular to an underwater motor system. Background Technology

[0002] Currently, underwater motors need to take into account the underwater operating environment. Their complex mechanical structure design for sealing and waterproofing results in manufacturing and maintenance costs that are far higher than those of land-based motors. Finding a solution to reduce the manufacturing and operating costs of underwater motors has become an urgent problem for the industry. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an underwater motor system, seeking a solution to reduce the manufacturing and use costs of underwater motors, and to solve the problem of high manufacturing and maintenance costs of existing underwater motors.

[0004] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0005] The underwater motor system described in this utility model includes a motor unit and a pressure compensation unit.

[0006] The motor unit includes a land-based motor and a housing with a watertight cavity. The land-based motor is disposed inside the watertight cavity. The pressure compensation unit is connected to the cavity and is used to compensate for the pressure difference between the inside and outside of the cavity. The land-based motor draws power from a power supply device located outside the housing.

[0007] Preferably, the motor unit further includes a transformer, which is disposed in the receiving cavity and electrically connected to the land-based motor. The transformer is used to receive high-voltage power and output the high-voltage power after reducing its voltage.

[0008] Preferably, the pressure compensation unit includes a compensator and a watertight connecting pipe. The outer shell is provided with a first bracket. The compensator is fixed to the outside of the outer shell by the first bracket. The compensator is connected to the receiving cavity through the watertight connecting pipe.

[0009] More preferably, the watertight connection pipeline includes a waterproof pipeline and a watertight connector. One end of the waterproof pipeline is connected to the output end of the compensator, and the other end is connected to the receiving cavity. The watertight connector is provided at the connection points of the waterproof pipeline with the compensator and the outer shell, respectively.

[0010] Preferably, the outer shell surface is provided with a seawater corrosion resistant film.

[0011] More preferably, the outer shell is made of aluminum alloy, and the surface of the outer shell has undergone hard anodizing treatment.

[0012] Preferably, the outer shell is a spliced ​​shell, and a sealing strip is provided at the splice.

[0013] More preferably, the surface roughness of the outer shell and the sealing strip is between Ra1.6 and Ra6.3.

[0014] Preferably, a water immersion sensor is provided inside the receiving cavity.

[0015] Preferably, a second support is provided inside the receiving cavity, and the transformer is fixed to the second support.

[0016] Compared with the prior art, the beneficial effects of the underwater motor system described in this utility model are mainly reflected in:

[0017] This invention solves the waterproofing problem of underwater motors by setting up a shell with a watertight cavity and placing the land-based motor inside the cavity. Simultaneously, the pressure compensation unit is connected to the cavity to compensate for the pressure difference between the inside and outside of the cavity, ensuring that the shell will not be damaged due to the pressure difference and guaranteeing the basic reliability of the underwater motor. This provides an underwater motor solution based on a land-based motor, and the above-mentioned structure is simple. By using a land-based motor, the overall cost of manufacturing and using the underwater motor is significantly reduced, making it a viable alternative to existing conventional underwater motor solutions and solving the problem of high manufacturing and usage costs for conventional underwater motors. Attached Figure Description

[0018] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0019] Figure 1 A schematic diagram of the structure of an underwater motor system provided for an embodiment of this utility model;

[0020] Attached diagram: Motor unit 100, pressure compensation unit 200.

[0021] 1. Land-based motor, 2. Compensator, 3. Housing, 4. Immersion sensor, 5. First bracket, 6. Waterproof pipeline, 7. Watertight connector, 8. Transformer, 9. Second bracket, 10. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting this utility model.

[0023] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0024] This embodiment provides an underwater motor system, such as Figure 1 It includes a motor unit 100 and a pressure compensation unit 200;

[0025] The motor unit 100 includes a land motor 1 and a housing 3 having a watertight cavity 4. The land motor 1 is disposed in the watertight cavity 4. The pressure compensation unit 200 is connected to the cavity 4 and is used to compensate for the pressure difference between the inside and outside of the cavity 4. The land motor 1 draws power from a power supply device located outside the housing 3.

[0026] It should be noted that the land-based motor 1 in this embodiment refers to a motor required for use in a water environment. Compared with a motor used underwater, it has the advantages of simple structure, low manufacturing cost, and low operating cost.

[0027] This invention solves the waterproofing problem of the underwater motor by setting up a shell 3 with a watertight cavity 4 and placing the land-based motor 1 inside the cavity 4. At the same time, the pressure compensation unit 200 is connected to the cavity 4 to compensate for the pressure difference between the inside and outside of the cavity 4, thereby ensuring that the shell 3 will not be damaged due to the pressure difference and ensuring the basic reliability of the underwater motor using this invention. This provides an underwater motor solution based on the land-based motor 1. The above-mentioned structure of this solution is simple. By using the land-based motor 1, the overall cost of manufacturing and using the underwater motor is greatly reduced. It can replace the existing conventional underwater motor solutions and solve the problem of high manufacturing and use costs of existing conventional underwater motors.

[0028] In one preferred embodiment, the outer shell 3 is a spliced ​​shell, and a sealing strip (not shown in the figure) is provided at the splice for waterproofing to achieve a waterproof effect; furthermore, the roughness of the surface of the outer shell 3 and the sealing strip is between Ra1.6 and Ra6.3, preferably Ra1.6, to improve the sealing performance of the sealing strip and maximize the sealing effect of the sealing strip.

[0029] In another preferred embodiment, a water immersion sensor 5 is provided inside the receiving cavity 4 to detect whether there is any water leakage in the receiving cavity 4.

[0030] In another preferred embodiment, the pressure compensation unit 200 includes a compensator 2 and a watertight connecting pipe. The outer shell 3 is provided with a first support 6. The compensator 2 is fixed to the outside of the outer shell 3 by the first support 6. The compensator 2 is connected to the receiving cavity 4 through the watertight connecting pipe. Further, the watertight connecting pipe includes a waterproof pipe 7 and a watertight connector 8. One end of the waterproof pipe 7 is connected to the output end of the compensator 2, and the other end is connected to the receiving cavity 4. Watertight connectors 8 are provided at the connection points of both ends of the waterproof pipe 7 with the compensator 2 and the outer shell 3, respectively, thereby ensuring the watertight performance of the pipe during the communication between the compensator 2 and the receiving cavity 4.

[0031] Considering that the underwater motor operates at varying depths, resulting in different cable lengths for the land-based motor 1, this can lead to voltage drops due to line loss during long-distance power transmission. Since the land-based motor 1 operates at a standard voltage of 220V, in another preferred embodiment, the motor unit 100 also includes a transformer 9. The transformer 9 is housed within the receiving cavity 4 and electrically connected to the land-based motor 1. The transformer 9 receives high-voltage power and reduces its voltage before outputting it. This ensures that the land-based motor 1 can still obtain its normal operating voltage during long-distance transmission, guaranteeing normal operation and solving the voltage drop problem caused by line loss in long-distance power transmission environments. Furthermore, a second bracket 10 is provided within the receiving cavity 4, and the transformer 9 is fixed to the second bracket 10 for secure installation.

[0032] It should be noted that the high voltage power supply in this embodiment generally refers to a voltage higher than the operating voltage of the land-based motor 1, that is, a voltage higher than 220V. Typically, the design voltage of marine equipment such as mother ships and underwater machines can be selected as the high voltage reference to select the transformer 9 model, such as 3KV, 6KV, etc. This facilitates direct power supply without the need for additional circuits or conversion circuits.

[0033] In one specific embodiment, the surface of the outer shell 3 is provided with a seawater corrosion-resistant film to cope with long-term underwater operation and seawater corrosion. The outer shell 3 can be made of stainless steel, iron or aluminum, etc. For example, when the outer shell 3 is made of aluminum alloy, the surface of the outer shell 3 can be hard anodized to form an oxide film, thereby achieving the effect of preventing seawater corrosion. Moreover, the process is simple and relatively inexpensive.

[0034] In addition, an embodiment of a method for modifying a land-based electric motor 1 for underwater applications is provided, comprising:

[0035] The land motor 1 is placed inside the housing 3 with a watertight cavity 4, and the land motor 1 is located inside the watertight cavity 4. The power cord of the land motor 1 is pulled to the outside of the housing 3 for power supply.

[0036] A compensator 2 is installed on the outer shell 3 and connected to the watertight cavity 4.

[0037] This invention provides a modification scheme that allows a land-based motor 1 to be used as an underwater motor. The modification method is simple and highly operable, greatly reducing the technical difficulty of underwater motors and facilitating their localization.

[0038] Furthermore, it also includes anti-corrosion treatment of the surface of the outer shell 3 to protect the outer shell 3 from corrosion and meet the requirements of underwater applications with anti-corrosion requirements; it should be noted that, in the preferred embodiment, the outer shell 3 that has been treated with anti-corrosion can be directly used to install the land motor 1 and the compensator 2 in the above embodiment, that is, the selected outer shell 3 has a seawater corrosion and oxidation protection film. Alternatively, the anti-corrosion treatment method can be completed as a prerequisite before installing the land motor 1 and the compensator 2.

[0039] Furthermore, a transformer 9 is installed within the watertight cavity 4, and the transformer 9 is electrically connected to the land-based motor 1. The transformer 9 is used to connect to an external high-voltage power supply. This embodiment takes into account the characteristic that the operating voltage of the land-based motor 1 is typically 220V, while there is a voltage drop during long-distance power transmission. By installing the transformer 9, the operating voltage of the land-based motor 1 is ensured to remain normal and stable, thus guaranteeing the stable and reliable operation of the underwater motor.

[0040] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An underwater motor system, characterized in that: Includes a motor unit and a pressure compensation unit; The motor unit includes a land-based motor and a housing with a watertight cavity. The land-based motor is disposed inside the watertight cavity. The pressure compensation unit is connected to the cavity and is used to compensate for the pressure difference between the inside and outside of the cavity. The land-based motor draws power from a power supply device located outside the housing.

2. The underwater motor system according to claim 1, characterized in that: The motor unit also includes a transformer, which is disposed in the housing and electrically connected to the land-based motor. The transformer is used to receive high-voltage power and output the high-voltage power after reducing its voltage.

3. The underwater motor system according to claim 1, characterized in that: The pressure compensation unit includes a compensator and a watertight connecting pipe. The outer shell is provided with a first bracket. The compensator is fixed to the outside of the outer shell by the first bracket. The compensator is connected to the receiving cavity through the watertight connecting pipe.

4. The underwater motor system according to claim 3, characterized in that: The watertight connection pipeline includes a waterproof pipeline and a watertight connector. One end of the waterproof pipeline is connected to the output end of the compensator, and the other end is connected to the receiving cavity. The watertight connector is provided at the connection points of the waterproof pipeline with the compensator and the outer shell, respectively.

5. An underwater motor system according to claim 1, characterized in that: The outer shell surface is provided with a seawater corrosion resistant film.

6. An underwater motor system according to claim 5, characterized in that: The outer shell is made of aluminum alloy, and the surface of the outer shell has undergone hard anodizing treatment.

7. The underwater motor system according to claim 1, characterized in that: The outer shell is a spliced ​​shell, and a sealing strip is provided at the splice.

8. An underwater motor system according to claim 7, characterized in that: The surface roughness of the outer shell and the sealing strip is between Ra1.6 and Ra6.

3.

9. An underwater motor system according to claim 1, characterized in that: A water immersion sensor is installed inside the cavity.

10. An underwater motor system according to claim 2, characterized in that: A second support is provided inside the cavity, and the transformer is fixed to the second support.

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