阅读说明：本技术 一种基于磁力耦合传动的深海电机及传动方法 (Deep sea motor based on magnetic coupling transmission and transmission method ) 是由 盖宝英 邵宗泽 吴冬华 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种基于磁力耦合传动的深海电机及传动方法,基于磁力耦合传动的深海电机包括非磁性耐压壳体以及磁力耦合电机；所述耐压壳体包括本体以及盖体,所述磁力耦合电机包括驱动组件以及磁耦合输出转子轴；所述本体内部形成有容纳腔,所述盖体包括盖板以及朝向所述盖板的内侧面凸伸的内桶部,所述磁耦合输出转子轴通过轴承安装于所述内桶部内,所述驱动组件安装于所述容纳腔内,所述盖板密封的盖设于所述本体上,所述磁耦合输出转子轴通过磁耦合传动的方式与所述驱动组件传动连接；基于磁力耦合传动的深海电机不需要密封件对输出轴进行动密封,解决了漏油问题和旋转输出轴的动密封问题。(The invention discloses a deep sea motor based on magnetic coupling transmission and a transmission method, wherein the deep sea motor based on the magnetic coupling transmission comprises a non-magnetic pressure-resistant shell and a magnetic coupling motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; a containing cavity is formed inside the body, the cover body comprises a cover plate and an inner barrel portion protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft is installed in the inner barrel portion through a bearing, the driving assembly is installed in the containing cavity, the cover plate is hermetically covered on the body, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode; the deep sea motor based on magnetic coupling transmission does not need a sealing element to carry out dynamic sealing on an output shaft, and solves the problems of oil leakage and dynamic sealing of a rotary output shaft.)

1. A deep sea motor based on magnetic coupling transmission is characterized by comprising a non-magnetic pressure-resistant shell and a magnetic coupling motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; a containing cavity is formed inside the body, a watertight connecting terminal used for being electrically connected with the outside is arranged on the body, and a driving assembly of the magnetic coupling motor is connected with the watertight connecting terminal and is connected with a power supply through the watertight connecting terminal; the cover body comprises a cover plate and an inner barrel part protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft is arranged in the inner barrel part through a bearing and protrudes out of the outer side surface of the cover plate, and a permanent magnet matched with the output of the driving assembly is arranged on the magnetic coupling output rotor shaft; the driving assembly is installed in the containing cavity, the inner barrel portion extends into the containing cavity, the cover plate sealed cover is arranged on the body to seal the containing cavity into a sealed cavity, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode.

2. Deep sea electric machine based on magnetically coupled transmission according to claim 1, characterized in that it is located inside a non-magnetic pressure resistant casing.

3. The deep sea motor based on magnetic coupling transmission of claim 1, wherein the cover plate and the body are both provided with an extension flange, and the cover plate and the body are fixedly connected through matching between bolts and the extension flange.

4. The deep sea motor based on magnetic coupling transmission according to claim 1, wherein a plurality of strip-shaped first permanent magnets are uniformly distributed on the outer peripheral surface of the magnetic coupling output rotor shaft along the axial direction, and the N magnetic poles and the S magnetic poles of the first permanent magnets are arranged along the radial direction.

5. The deep sea motor based on magnetic coupling transmission according to claim 4, wherein the driving assembly comprises a driving motor, a magnetic coupling rotor sleeve connected with an output shaft of the driving motor, the magnetic coupling output rotor shaft is matched with the magnetic coupling rotor sleeve, the magnetic coupling rotor sleeve is arranged on the inner barrel part, a plurality of strip-shaped second permanent magnets matched with the first permanent magnets are uniformly distributed on the inner peripheral side wall of the magnetic coupling rotor sleeve, and the N magnetic pole and the S magnetic pole of each second permanent magnet are arranged along the radial direction and are opposite to the first permanent magnet in direction.

6. The deep sea motor based on magnetic coupling transmission of claim 1, wherein the number of the first permanent magnet and the second permanent magnet is equal and is an even number.

7. Deep sea electric machine based on magnetic coupling transmission according to claim 6, characterized in that the number of said first and second permanent magnets is 6 or 8.

8. Deep sea magnetic coupling transmission based motor according to claim 1, wherein the drive assembly comprises motor coil windings magnetically coupled to the magnetically coupled output rotor shaft and a controller controlling magnetic eddy currents of the motor coil windings to drive the magnetically coupled output rotor shaft in rotation.

9. Deep sea electric machine based on magnetically coupled transmission according to claim 1, characterized in that the drive assembly is arranged axially concentric to the magnetically coupled output rotor shaft.

10. A transmission method of a deep sea motor, characterized in that the deep sea motor is magnetically coupled and driven by adopting the structure of the deep sea motor based on the magnetic coupling and driving according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of submersible motors, in particular to a deep sea motor based on magnetic coupling transmission and a transmission method thereof, which are applied to a deep sea environment.

Background

The existing deep sea motor is an oil-filled balanced underwater motor which is simple in structure and convenient to implement. The balance modes of the oil-filled balance type underwater motor comprise film type compensation, oil skin bag compensation and piston type compensation; the principle is that the deep sea motor protective shell is filled with oil, and deformation under high water pressure achieves pressure balance through deformation of a compensation film, an oil leather bag or a compensation piston. For example, one invention of patent No. 2012102389458, "controller integrated deep sea motor" utilizes a similar pressure balancing device.

The balance mode of the oil-filled balance type underwater motor adopts a pressure balance method, external high water pressure is transmitted to each component of the motor through a pressure balance device, namely the motor moves to an environment with high oil pressure to work, the motor runs under the high pressure environment, and an internal supporting frame, a coil, a bearing, a silicon steel sheet, a dynamic seal and the like of the motor are all subjected to micro-deformation, so that the transmission efficiency of the motor is greatly reduced. It can be seen through pressure testing that the higher the water pressure, the lower the motor efficiency.

In addition, the working of water isolation and the overcoming of a high-pressure environment are one of the main difficulties in deep sea application of the motor, a power shaft of the oil-filled balance motor achieves water resistance under a rotating working condition through dynamic sealing, pressure difference always exists between the internal and external high-pressure water environments of the motor, zero leakage cannot be achieved through the dynamic sealing under the working condition, and oil leakage in the motor and external environment pollution can be caused; when inside ulcerate oil exceeded the offset, there was the risk of intaking and burning the motor inside the motor, and the oil leak can be to deep sea environmental pollution, also can pollute the sample of water sampling simultaneously.

Disclosure of Invention

The invention mainly aims to provide a deep sea motor based on magnetic coupling transmission and a transmission method applied to a deep sea environment, and aims to solve the problem that the conventional deep sea motor cannot solve zero leakage of dynamic seal.

In order to achieve the aim, the invention provides a deep sea motor based on magnetic coupling transmission, which comprises a non-magnetic pressure-resistant shell and a magnetic coupling motor, wherein the non-magnetic pressure-resistant shell is arranged on the deep sea motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; a containing cavity is formed inside the body, a watertight connecting terminal used for being electrically connected with the outside is arranged on the body, and a driving assembly of the magnetic coupling motor is connected with the watertight connecting terminal and is connected with a power supply through the watertight connecting terminal; the cover body comprises a cover plate and an inner barrel part protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft is arranged in the inner barrel part through a bearing and protrudes out of the outer side surface of the cover plate, and a permanent magnet matched with the output of the driving assembly is arranged on the magnetic coupling output rotor shaft; the driving assembly is installed in the containing cavity, the inner barrel portion extends into the containing cavity, the cover plate sealed cover is arranged on the body to seal the containing cavity into a sealed cavity, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode.

Further, the magnetic coupling motor is positioned inside the non-magnetic pressure-resistant shell. Further, an opening is formed in the cover plate of the inner barrel portion, bearings are arranged on the bottom surface of the inner barrel portion and the opening, and the magnetic coupling output rotor shaft is rotatably arranged on the bearings.

Further, the cover plate and the body are both provided with extension flanges, and the cover plate and the body are fixedly connected through bolts and the extension flanges in a matched mode.

Furthermore, a plurality of strip-shaped first permanent magnets are uniformly distributed on the outer peripheral surface of the magnetic coupling output rotor shaft along the axial direction, and the N magnetic pole and the S magnetic pole of each first permanent magnet are arranged along the radial direction.

Further, the driving assembly comprises a driving motor and a magnetic coupling rotor sleeve connected with an output shaft of the driving motor, the magnetic coupling output rotor shaft is matched with the magnetic coupling rotor sleeve, the magnetic coupling rotor sleeve is arranged on the inner barrel part, a plurality of strip-shaped second permanent magnets matched with the first permanent magnets are uniformly distributed on the inner peripheral side wall of the magnetic coupling rotor sleeve, and the N magnetic pole and the S magnetic pole of each second permanent magnet are arranged along the radial direction and are opposite to the first permanent magnet in direction.

Furthermore, the number of the first permanent magnets and the number of the second permanent magnets are equal and are even.

Further, the number of the first permanent magnet and the second permanent magnet is 6 or 8.

Further, the driving assembly comprises a motor coil winding and a controller, the motor coil winding is in magnetic coupling transmission with the magnetic coupling output rotor shaft, and the controller controls magnetic eddy currents of the motor coil winding to drive the magnetic coupling output rotor shaft to rotate.

Further, the drive assembly is disposed axially concentric with the magnetically coupled output rotor shaft.

In addition, in order to achieve the above object, the present invention provides a deep sea motor driving method, wherein the deep sea motor is magnetically coupled and driven using any one of the structures of the deep sea motor based on the magnetic coupling and driving.

The invention provides a deep sea motor based on magnetic coupling transmission and a transmission method, wherein the deep sea motor based on the magnetic coupling transmission comprises a non-magnetic pressure-resistant shell and a magnetic coupling motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; a containing cavity is formed inside the body, a watertight connecting terminal used for being electrically connected with the outside is arranged on the body, and a driving assembly of the magnetic coupling motor is connected with the watertight connecting terminal and is connected with a power supply through the watertight connecting terminal; the cover body comprises a cover plate and an inner barrel part protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft is arranged in the inner barrel part through a bearing and protrudes out of the outer side surface of the cover plate, and a permanent magnet matched with the output of the driving assembly is arranged on the magnetic coupling output rotor shaft; the driving assembly is installed in the containing cavity, the inner barrel portion extends into the containing cavity, the cover plate sealed cover is arranged on the body to seal the containing cavity into a sealed cavity, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode.

Compared with the prior art, the method has the advantages that:

1. the pressure-resistant shell can resist external pressure, so that the internal accommodating cavity is in a low-pressure environment, the model selection conditions of devices such as an internal motor are greatly reduced, and the motor on land can be basically used. The problem of the structure influence of motor itself under the high pressure environment is solved, can not influence the output of motor power along with the change of external environment pressure.

2. The magnetic coupling transmission is a non-contact transmission method, a sealing element is not needed to perform movable sealing on the rotating shaft, and the problems of oil leakage and movable sealing of the rotating shaft are solved.

Drawings

FIG. 1 is a schematic structural diagram of a deep sea motor based on magnetic coupling transmission in one embodiment of the invention;

FIG. 2 is a schematic diagram of a permanent magnet distribution in one embodiment of the magnetic coupling drive of FIG. 1;

fig. 3 is a schematic structural diagram of a deep sea motor based on magnetic coupling transmission in another embodiment of the invention.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 is a schematic structural diagram of a deep sea motor based on magnetic coupling transmission according to an embodiment of the present invention.

The deep sea motor includes a non-magnetic pressure-resistant housing (not numbered) and a magnetic coupling motor (not numbered).

The pressure casing comprises a body 2 and a cover 7, and the magnetically coupled motor comprises a driving assembly (not numbered in the figure) and a magnetically coupled output rotor shaft 8. The inside chamber that holds that is formed with of body 2, 2 are provided with on the body and are used for the watertight connecting terminal (not numbered) of being connected with the outside electricity, magnetic coupling motor's drive assembly with watertight connecting terminal connects, and passes through watertight connecting terminal is connected with the power. Specifically, the watertight connecting terminal is connected with the watertight connector 1 and then electrically connected with an external power supply through a cable; in addition, it will be appreciated by those skilled in the art that the watertight connection terminal may also function as a wired electrical communication.

The cover body 7 comprises a cover plate and an inner barrel part protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft 8 is arranged in the inner barrel part through bearings 5 and 9 and protrudes out of the outer side surface of the cover plate, and a permanent magnet 81 matched with the output of the driving component is arranged on the magnetic coupling output rotor shaft 8; the driving assembly is installed in the containing cavity, the inner barrel part extends into the containing cavity, the cover plate sealed cover is arranged on the body 2 to seal the containing cavity into a sealed cavity, and the magnetic coupling output rotor shaft 8 is in transmission connection with the driving assembly in a magnetic coupling transmission mode.

Further, an opening is formed in the inner barrel portion at the cover plate, bearings 5 and 9 are arranged on the bottom surface of the inner barrel portion and the opening, and the magnetic coupling output rotor shaft 8 is rotatably arranged on the bearings.

Further, the cover plate and the body are both provided with extension flanges, and the cover plate and the body are fixedly connected through bolts and the extension flanges in a matched mode.

Further, a plurality of bar-shaped first permanent magnets 81 are uniformly distributed on the outer circumferential surface of the magnetic coupling output rotor shaft 8 along the axial direction, and the N magnetic pole and the S magnetic pole of each first permanent magnet 81 are arranged along the radial direction.

Further, the driving assembly comprises a driving motor 3 and a magnetic coupling rotor sleeve 6 connected with an output shaft of the driving motor 3, the magnetic coupling output rotor shaft 8 is matched with the magnetic coupling rotor sleeve 6, the magnetic coupling rotor sleeve 6 is sleeved on the inner barrel part, a plurality of strip-shaped second permanent magnets 61 matched with the first permanent magnets 81 are uniformly distributed on the inner peripheral side wall of the magnetic coupling rotor sleeve 6, and the N magnetic poles and the S magnetic poles of the second permanent magnets 61 are arranged along the radial direction and opposite to the first permanent magnets 81 in direction.

Further, the first permanent magnets 81 and the second permanent magnets 61 are equal in number and are even in number.

Further, the number of the first permanent magnets 81 and the second permanent magnets 61 is 6 or 8.

Further, the drive assembly is disposed axially concentric with the magnetically coupled output rotor shaft 8.

Referring to fig. 1 and 2 again, the structure and operation of the deep sea motor according to the first embodiment of the present invention will be described in detail.

The deep sea magnetic coupling motor mainly comprises: the watertight connector comprises a watertight connector 1, a body (a motor pressure-resistant cylinder) 2, a motor 3, a coupler 4, a bearing 5, a magnetic coupling rotor sleeve 6, a first permanent magnet (a permanent magnet) 61, a cover () pressure-resistant magnetic coupling end cover) 7, a magnetic coupling rotor output shaft 8, a second permanent magnet (a permanent magnet) 81 and a bearing 9.

The motor pressure-resistant cylinder 2 and the pressure-resistant magnetic coupling end cover 7 form a closed pressure-resistant cabin which is made of non-magnetic-conductive metal (such as titanium alloy and aluminum alloy), one end of the motor pressure-resistant cylinder 2 is connected with a water-tight sealing plug-in unit, the motor 3 is fixed inside the motor pressure-resistant cylinder 2 through bolts, the motor 3 and the motor pressure-resistant cylinder 2 are axially concentric, the output shaft of the motor 3 is connected with the coupling 4, one end of the coupling is connected with the magnetic coupling rotor sleeve 6 and the output shaft of the motor 3, the shaft device 4 and the magnetic coupling rotor sleeve 6 are axially concentric, the pressure-resistant magnetic coupling end cover 7 is barrel-shaped, the barrel inside the pressure-resistant magnetic coupling end cover 7 is inserted into the magnetic coupling rotor sleeve 6, the barrel inside the pressure-resistant magnetic coupling end cover 7 is axially concentric with the magnetic coupling rotor sleeve 6, the extension flange of the pressure-resistant magnetic coupling end cover 7 is fixed with the motor pressure-resistant cylinder 2 through bolts, and the motor pressure-resistant cylinder 2 and the pressure-resistant magnetic coupling end cover 7 form a closed pressure-resistant cabin; the magnetic coupling output shaft 8 is arranged in a barrel inside the pressure-resistant magnetic coupling end cover 7, the bearing 5 and the bearing 9 are connected with the pressure-resistant magnetic coupling end cover 7 in a positioning mode, and the magnetic coupling output shaft 8 and the pressure-resistant magnetic coupling end cover 7 are concentric in the axial direction.

The permanent magnet 61 is shaped like a long strip, the N pole and the S pole of the permanent magnet 61 are in the thickness direction, and the connecting line of the N pole and the S pole of the permanent magnet 61 passes through the axial center of the magnetic coupling rotor sleeve 6. Permanent magnets 61 are uniformly distributed on the inner circumference of the magnetic coupling rotor sleeve 6, and the number of the permanent magnets is a multiple of 2; adjacent permanent magnets 61 on the inner circumference of the magnetically coupled rotor sleeve 6 are of opposite polarity. The permanent magnet 61 needs to be subjected to an anticorrosive treatment.

The permanent magnet 81 has a long shape, the N-pole and S-pole of the permanent magnet 81 are in the thickness direction, and the line connecting the N-pole and S-pole of the permanent magnet 81 passes through the axial center of the magnetic coupling output shaft 8. Permanent magnets 81 are uniformly distributed on the circumference of the magnetic coupling output shaft 8, and the number of the permanent magnets is equal to that of the permanent magnets 61; the adjacent permanent magnets 81 on the circumference of the magnetic coupling output shaft 8 have opposite magnetic poles. The permanent magnet 81 needs to be subjected to an anticorrosive treatment.

The motor 3 directly drives the magnetic coupling rotor sleeve 6, the power of the magnetic coupling rotor sleeve 6 is transmitted to the magnetic coupling output shaft 8 through magnetic coupling, the coupling output shaft 8 is externally connected with a load, a barrel wall of a pressure-resistant magnetic coupling end cover 7 is arranged between the magnetic coupling rotor sleeve 6 and the coupling output shaft 8, and the motor pressure-resistant barrel 2 and the pressure-resistant magnetic coupling end cover 7 form a closed pressure-resistant cabin; the pressure-resistant cabin isolates an external water body and bears the water pressure of the external water body, the motor 3 works in the air, the working curve of the motor basically has no change, and the motor is not influenced by the water and the water pressure. The rotary output is transmitted to the coupling output shaft 8 through the magnetic coupling of the seal, so that the rotary seal is not influenced by water and water pressure.

Referring to fig. 3, in another embodiment, the driving assembly may include a motor coil winding 31 and a controller (not shown), the motor coil winding 31 is magnetically coupled to the magnetically coupled output rotor shaft 8, and the controller controls the magnetic eddy currents of the motor coil winding 31 to drive the magnetically coupled output rotor shaft 8 to rotate.

It should be understood by those skilled in the art that the specific structure and model of the magnetic coupling motor can be set as required to select various magnetic coupling motors based on permanent magnet eddy current transmission technology, such as a dual-rotor magnetic coupling, etc.

In addition, in order to achieve the above object, the present invention provides a deep sea motor driving method, wherein the deep sea motor is magnetically coupled and driven using any one of the structures of the deep sea motor based on the magnetic coupling and driving.

The invention provides a deep sea motor based on magnetic coupling transmission and a transmission method, wherein the deep sea motor based on the magnetic coupling transmission comprises a non-magnetic pressure-resistant shell and a magnetic coupling motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; a containing cavity is formed inside the body, a watertight connecting terminal used for being electrically connected with the outside is arranged on the body, and a driving assembly of the magnetic coupling motor is connected with the watertight connecting terminal and a power supply through the watertight connecting terminal; the cover body comprises a cover plate and an inner barrel part protruding towards the inner side surface of the cover plate, the magnetic coupling output rotor shaft is arranged in the inner barrel part through a bearing and protrudes out of the outer side surface of the cover plate, and a permanent magnet matched with the output of the driving assembly is arranged on the magnetic coupling output rotor shaft; the driving assembly is installed in the containing cavity, the inner barrel portion extends into the containing cavity, the cover plate sealed cover is arranged on the body to seal the containing cavity into a sealed cavity, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode.

Compared with the prior art, the method has the advantages that:

1. the pressure-resistant shell can resist external pressure, so that the internal accommodating cavity is in a low-pressure environment, the model selection conditions of devices such as an internal motor are greatly reduced, and the motor on land can be basically used. The problem of the structure influence of motor itself under the high pressure environment is solved, can not influence the output of motor power along with the change of external environment pressure.

2. The magnetic coupling transmission is a non-contact transmission method, a sealing element is not needed to perform movable sealing on the rotating shaft, and the problems of oil leakage and movable sealing of the rotating shaft are solved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.