CN103818535B - Integrate motor propelling unit - Google Patents
Integrate motor propelling unit Download PDFInfo
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- CN103818535B CN103818535B CN201410093845.XA CN201410093845A CN103818535B CN 103818535 B CN103818535 B CN 103818535B CN 201410093845 A CN201410093845 A CN 201410093845A CN 103818535 B CN103818535 B CN 103818535B
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Abstract
Integrate motor propelling unit, comprise the internal stator and outer rotor that are formed by stacking by silicon steel plate, internal stator and outer rotor are salient-pole structure, on the salient pole tooth of internal stator, solderless wrapped connection has excitation winding, internal stator inside is circumferentially rabbeted multiple permanent magnet, the corresponding excitation winding of permanent magnet is arranged, magnetic conduction seal closure is provided with between internal stator and outer rotor, the two ends of magnetic conduction seal closure respectively with end cap one, end cap two affixed and sealing, internal stator is positioned at by magnetic conduction seal closure, in the seal cavity one that end cap one and end cap two are formed, and the two ends of internal stator respectively with end cap one, end cap two is affixed, the two ends of outer rotor are supported on end cap one, end cap two respectively by water lubricated bearing rotationally, end cap one, are respectively equipped with rubber absorbers between end cap two and corresponding water lubricated bearing, screw propeller and outer rotor affixed.The present invention by motor and screw propeller into a single integrated structure, reduce volume, weight, effectively reduce vibration and noise, improve propulsion coefficient and functional reliability.
Description
Technical field
The present invention relates to underwater propulsion unit, be specifically related to by screw blade is fixedly connected with rotor thus make motor and propelling unit the propelling unit be integrated, particularly relate to the permanent magnetism propelling unit being applicable to deep-sea mobile workstation.
Background technology
Thrust unit is a kind of widely used engine installation under water, is used for promoting the water surface/loadings under water such as boats and ships, ships and light boats, submersible, deep-sea mobile workstation, offshore work platform and carries out navigation campaign and pose adjustment.
At present, thrust unit is generally combined by independent electrical motor and screw propeller under water, disclosed in Chinese patent ZL200620055186.1 " a kind of electrical underwater propeller ", because motor and screw propeller are separate component part, motor needs to pass through coupler, the drivings device such as magnetic couple drive screw propeller, therefore this kind of device structure is complicated, consumption material is many, in power transmission process, consume is large, noise is high, and screw propeller is directly be fixed on motor mechanical axis substantially, therefore, need when sealing to adopt movable sealing structure, and movable sealing structure to there is working accuracy high, the problem of sealing effectiveness difference, under abyssal environment, adopt the functional reliability of the propelling unit of movable sealing structure poor and inconvenience maintenance.
Along with the appearance of electric propulsion, the motor propelling unit of machine oar integration has been there is in prior art, this propelling unit adopts brshless DC motor to drive usually, but use brshless DC motor to drive the efficiency under speed operation lower, in order to improve the efficiency of speed operation and provide enough large torque often to need additional configuration gear reducer in prior art, the configuration of gear reducer not only adds the volume and weight of propelling unit, also larger vibration noise can be produced in operational process, have a strong impact on the normal work of sonar and some sophisticated sensor, on the other hand, also there is following defect in the existing motor propelling unit for the machine oar integration in the mobile workstation of deep-sea: first, the control setup of many covers propulsion electric machine that deep-sea mobile workstation carries generally is arranged in the driving tank of a pressure-resistant seal, driving between tank and the propulsion electric machine of diverse location adopts underwater electrical connector and cable to be connected, drive each actuating device radiating condition in tank poor, electromagnetic interference problem is serious, system reliability is poor, the signal line transmission distance of watertight cable Position Sensor is long, disturb extremely serious, have a strong impact on the functional reliability of propelling unit, the second, do not possess pressure compensation, cause the motor seal shell needed compared with heavy thickness and air gap, affect the driving efficiency of motor, 3rd, rotor-position sensor Real-Time Monitoring rotor-position need be used, but existing rotor-position sensor fault rate is high, have impact on the functional reliability of propelling unit.
Summary of the invention
The applicant improves for above-mentioned shortcoming of the prior art, provides a kind of integrate motor propelling unit, its make motor and screw propeller into a single integrated structure, volume is little, lightweight, and noise is low, propulsion coefficient is high, and the simple and good sealing effect of hermetically-sealed construction, functional reliability is high.
Technical scheme of the present invention is as follows:
Integrate motor propelling unit, comprise internal stator, outer rotor and screw propeller, internal stator and outer rotor are formed by stacking by silicon steel plate, internal stator and outer rotor are salient-pole structure, on the salient pole tooth of internal stator, solderless wrapped connection has excitation winding, internal stator inside is circumferentially rabbeted multiple permanent magnet, the corresponding excitation winding of permanent magnet is arranged, magnetic conduction seal closure is provided with between internal stator and outer rotor, the two ends of magnetic conduction seal closure respectively with end cap one, end cap two affixed and sealing, internal stator is positioned at by magnetic conduction seal closure, in the seal cavity one that end cap one and end cap two are formed, and the two ends of internal stator respectively with end cap one, end cap two is affixed, the two ends of outer rotor are supported on end cap one, end cap two respectively by water lubricated bearing rotationally, end cap one, are respectively equipped with rubber absorbers between end cap two and corresponding water lubricated bearing, screw propeller and outer rotor affixed.
Its further technical scheme is:
The two ends of described outer rotor are provided with trapezoidal slide rail, and outer rotor is by the trapezoidal groove free-running fit of described trapezoidal slide rail and water lubricated bearing.
Described water lubricated bearing adopts the imperial material of match.
The fitting surface of described water lubricated bearing and outer rotor is provided with circular groove, allows fluid to enter in described circular groove and to lubricate described water lubricated bearing.
Described end cap one is affixed with housing one, and the formation seal cavity two that is tightly connected therebetween, control circuit board is packed in housing one, the lead-in wire of excitation winding is connected to control circuit board by electric connector, electric connector is contained on end cap one, end cap one is provided with through hole, and described through hole makes seal cavity one be communicated with seal cavity two, and the control circuit of control circuit board is drawn by underwater electrical connector.
Described control circuit board is provided with power model, is evenly coated with heat-conducting silicone grease between power model and housing one.
The periphery of described screw propeller is provided with fairing, and fairing is fixedly supported on end cap one and/or end cap two.
The periphery of described screw propeller is provided with fairing, and fairing is fixedly supported on housing one by pole.
Described end cap two is affixed with housing two, and seal therebetween, housing two is with the axially extending bore communicated with outside, described axially extending bore extends to housing two inside, pressure compensation film is fitted in housing two by hold-down ring, and pressure compensation film covers described axially extending bore, hold-down ring and housing two affixed, spring is provided with between the outer wall of pressure compensation film and described axially extending bore extension, seal cavity three is formed between end cap two, housing two and pressure compensation film, end cap two is provided with through hole, and described through hole makes seal cavity one and seal cavity tee joint.
Technique effect of the present invention:
1, the present invention adopts the double salient-pole electric machine of mosaic magnet on outer rotor, internal stator, Driving Torque is increased with the magnetic flux density improving air gap, substantially increase torque volume ratio, compared with the brshless DC motor of Same Efficieney, do not need additional configuration gear reducer, volume is less, and weight is lighter, low speed high torque power efficiency is higher, and on thrust face and radial support face, be provided with rubber damper, significantly reduce the vibration noise of propelling unit.
2, screw propeller and outer rotor connect as one by the present invention, make motor and screw propeller into a single integrated structure, eliminate the power transmission between motor and screw propeller, eliminate traditional main driving axle, thus avoid the degradation of energy of intermediate transmission link, effectively reduce noise and vibration during plant running; Adopt the water lubricated bearing with circular groove, fluid is entered in circular groove and lubricates described water lubricated bearing, can ensure to form stable lubricating film between outer rotor and water lubricated bearing, thus the wearing and tearing of water lubricated bearing can be greatly reduced, and reduce noise and vibration; On the other hand, owing to eliminating traditional main driving axle, thus avoid main driving axle sealing problem, do not need to adopt working accuracy of the prior art is high, sealing effectiveness is poor movable sealing structure or configure extra magnetic coupling, thus substantially increase system works reliability and propulsion coefficient, reduce the volume of propelling unit, weight and cost simultaneously.
3, the integrated control setup be provided with control circuit board of propelling unit of the present invention, further increase System all-in-one Integration degree, eliminate traditional propelling and drive tank, avoid the electromagnetic interference between many cover control setups, adopt pulse detecting method rotor position sensing with timed unit, eliminate the use of the high rotor-position sensor of fault rate, substantially increase system works reliability, also save the quantity of underwater electrical connector and watertight cable simultaneously, reduce cost.
4, propelling unit of the present invention is by the integrated setting of pressure compensation structure, by the setting of rubber pressure compensate film and Compress Spring, after making lower water, oil pressure in propelling unit and external seawater pressure always keep balancing, and according to maximum working depth under water, can adjust the oil-filled in advance amount of pressure compensation structure, the setting of pressure compensation structure can reduce thickness and the air gap of magnetic conduction seal closure, improves the driving efficiency of propelling unit.
Accompanying drawing explanation
Fig. 1 is contour structures schematic diagram of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 2.
Wherein: 1, internal stator; 2, outer rotor; 3, screw propeller; 4, excitation winding; 5, permanent magnet; 6, magnetic conduction seal closure; 7, end cap one; 8, end cap two; 9, water lubricated bearing; 10, rubber absorbers; 11, fairing; 12, housing one; 13, seal cavity two; 14, control circuit board; 141, power model; 15, electric connector; 16, seal cavity one; 17, underwater electrical connector; 18, pole; 19, housing two; 20, pressure compensation film; 21, hold-down ring; 22, spring; 23, seal cavity three; 24, flat key, 25, lead-in wire; 26, auxiliary pivot shaft.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
See Fig. 1, Fig. 2, the present invention includes internal stator 1, outer rotor 2 and screw propeller 3, internal stator 1 and outer rotor 2 are formed by stacking by silicon steel plate, see Fig. 3, internal stator 1 and outer rotor 2 are salient-pole structure, and the matching relationship of the basic structure of internal stator 1 and outer rotor 2 is 6n/4n, wherein, n is positive integer, and n >=1, namely internal stator 1 is circumferentially being evenly distributed with the individual outside salient pole of 6n, outer rotor is circumferentially being evenly distributed with the individual inside salient pole of 4n, as an embodiment, Fig. 3 gives the version that the rotor when n gets 2 coordinates, on the salient pole tooth of internal stator 1, solderless wrapped connection has excitation winding 4, the winding direction of homophase excitation winding 4 is contrary, internal stator 1 inside is circumferentially rabbeted multiple permanent magnet 5, the corresponding excitation winding 4 of permanent magnet 5 is arranged, permanent magnet 5 preferably adopts radial magnetizing, it is consistent that the permanent magnet 5 of flow direction to correspondence produced when excitation winding 4 is energized produces flow direction, so, the magnetic flux density of air gap can be improved to increase Driving Torque, magnetic conduction seal closure 6 is provided with between internal stator 1 and outer rotor 2, the two ends of magnetic conduction seal closure 6 respectively with end cap 1, end cap 28 is affixed, and magnetic conduction seal closure 6 and end cap 1, O RunddichtringO is adopted to seal assembling between end cap 28, internal stator 1 is positioned at by magnetic conduction seal closure 6, in the seal cavity 1 that end cap 1 and end cap 28 are formed, and the two ends of internal stator 1 respectively with end cap 1, end cap 28 is fixedly mounted by flat key 24, the two ends of outer rotor 2 are supported on end cap 1, end cap 28 respectively by water lubricated bearing 9 rotationally, end cap 1, between end cap 28 and corresponding water lubricated bearing 9, be respectively equipped with rubber absorbers 10, particularly, the two ends of outer rotor 2 are provided with trapezoidal slide rail, outer rotor 2 is by the trapezoidal groove free-running fit of described trapezoidal slide rail and water lubricated bearing 9, then by interference fit between the end cap 1 that two water lubricated bearings 9 assemble with corresponding, end cap 28, rotate in a circumferential direction to limit water lubricated bearing 9, screw propeller 3 is arranged on the outer hub of outer rotor 2 by holding screw.
Further, described water lubricated bearing 9 adopts the imperial material of match, water lubricated bearing 9 is provided with circular groove with the fitting surface of outer rotor 2, fluid is allowed to enter in described circular groove and to lubricate water lubricated bearing 9, so, when outer rotor 2 smooth operation, ensure to form stable lubricating film between outer rotor 2 and water lubricated bearing 9, the lubricating film of such as oil film or other fluid medium, thus the wearing and tearing that can greatly reduce thrust baring, and reduce noise and vibration.
Further, in the propelling unit that integrated for control setup setting is formed by rotor and screw propeller, particularly, described end cap 1 is affixed with housing 1, and therebetween by O RunddichtringO be tightly connected thus formed seal cavity 2 13, control circuit board 14 is packed in housing 1, the lead-in wire 25 of excitation winding 4 is connected to control circuit board 14 by electric connector 15, electric connector 15 is contained on end cap 1, end cap 1 is provided with through hole, described through hole makes seal cavity 1 be communicated with seal cavity 2 13, guarantees to compensate oil circuit unobstructed; The control circuit of control circuit board 14 is drawn by underwater electrical connector 17, and the power model 141 on control circuit board 14 adopts the fastening installation of tightening screw with housing 1 and is evenly coated with heat-conducting silicone grease therebetween, to reach the object of fully heat radiation.
Further, described the present invention has additional pressure compensation structure, particularly, described end cap 28 is affixed with housing 2 19, and adopt O RunddichtringO sealing assembling therebetween, housing 2 19 is with the axially extending bore communicated with outside, described axially extending bore extends to housing 2 19 inside, pressure compensation film 20 is fitted in housing 2 19 by hold-down ring 21, and pressure compensation film 20 covers described axially extending bore, hold-down ring 21 is affixed with housing 2 19, the spring 22 of rust protection is provided with between the outer wall of pressure compensation film 20 and described axially extending bore extension, end cap 28, seal cavity 3 23 is formed between housing 2 19 and pressure compensation film 20, pressure compensation film 20 preferably adopts elastomeric material, spring 22 preferably adopts corrosion-resistant steel, end cap 28 is provided with through hole, through hole makes seal cavity 1 be communicated with seal cavity 3 23, guarantee to compensate oil circuit unobstructed.
In order to block radial flow, the raising propulsion coefficient of current, the periphery of described screw propeller 3 is provided with fairing 11, when whole propelling unit is not integrated control setup and pressure compensation structure are set, described fairing 11 is fixedly supported on end cap 1 and/or end cap 28; When whole propelling unit is not integrated control setup and/or pressure compensation structure are set, described fairing 11 is fixedly supported on housing 1 and/or housing 2 19 by pole 18.
When using large-scale propelling unit, because the diameter of now screw propeller 3 is very large, screw propeller is very heavy, usually need to adopt auxiliary pivot shaft to play a supportive role, auxiliary pivot shaft 26 two ends are fixedly supported on end cap 1, end cap 28 respectively, and internal stator 1 is sleeved on auxiliary pivot shaft 26, and arranging of auxiliary pivot shaft 26 is mainly applicable to go in in a big way propelling unit, can the dynamic balance performance of improving device, effectively can also reduce noise and vibration simultaneously.
Be applied as example with deep-sea mobile workstation, operation scheme of the present invention is as follows:
See Fig. 2, before lower water, transformer oil is full of in seal cavity 1 and seal cavity 3 23, spring 22 is made to be in pre-pressing state to lay in certain interior pressure, after lower water, due to the pressure compensation effect of pressure compensation film 20 and spring 22, the oil pressure of seal cavity 1 and seal cavity 3 23 and external seawater pressure always keep balancing, propelling unit of the present invention is fixedly mounted by the end flange of housing 1 and the hull of deep-sea mobile workstation, during work, deep-sea mobile workstation by underwater electrical connector 17 for propelling unit of the present invention provides electric power and control signal, after control circuit board 14 carries out rotor-position identification, commutation control and Current cut control are carried out to excitation winding 4, regulate the thrust that outer rotor 2 rotating speed and screw propeller 3 produce, rotating field is formed in air gap between internal stator 1 and outer rotor 2, rotor is driven to rotate and carrying screws generation hydrodynamic force, and advance respectively by water lubricated bearing 9 transmission at outer rotor 2 two ends, the thrust retreated.
The commutation of control circuit board of the present invention 14 pairs of excitation winding 4 controls without the need to additional rotor-position sensor of the prior art, by injecting square voltage pulse in all non-actuated phase windings of internal stator 1, detect the unsaturation inductance that its current impulse response signal calculates each phase winding under different rotor position, according to the inductance measured in advance in linearity region with the one-to-one relationship of rotor position angle, Function Fitting method is adopted to calculate rotor-position in real time, realize Real-Time Monitoring thus and rotor position sensing, thus regulate the thrust that outer rotor 2 rotating speed and screw propeller 3 produce, compared with prior art, without the need to the rotor-position sensor that operational failure rate is high, improve the functional reliability of propelling unit.
More than describing is explanation of the invention, and be not the restriction to invention, limited range of the present invention, see claim, within protection scope of the present invention, can do any type of amendment.
Claims (9)
1. integrate motor propelling unit, comprise internal stator (1), outer rotor (2) and screw propeller (3), internal stator (1) and outer rotor (2) are formed by stacking by silicon steel plate, it is characterized in that: internal stator (1) and outer rotor (2) are salient-pole structure, on the salient pole tooth of internal stator (1), solderless wrapped connection has excitation winding (4), internal stator (1) inside is circumferentially rabbeted multiple permanent magnet (5), permanent magnet (5) corresponding excitation winding (4) is arranged, magnetic conduction seal closure (6) is provided with between internal stator (1) and outer rotor (2), the two ends of magnetic conduction seal closure (6) respectively with end cap one (7), end cap two (8) affixed and sealing, internal stator (1) is positioned at by magnetic conduction seal closure (6), in the seal cavity one (16) that end cap one (7) and end cap two (8) are formed, and the two ends of internal stator (1) respectively with end cap one (7), end cap two (8) is affixed, the two ends of outer rotor (2) are supported on end cap one (7), end cap two (8) respectively by water lubricated bearing (9) rotationally, end cap one (7), be respectively equipped with rubber absorbers (10) between end cap two (8) with corresponding water lubricated bearing (9), screw propeller (3) is affixed with outer rotor (2).
2. by integrate motor propelling unit according to claim 1, it is characterized in that: the two ends of described outer rotor (2) are provided with trapezoidal slide rail, outer rotor (2) is by the trapezoidal groove free-running fit of described trapezoidal slide rail and water lubricated bearing (9).
3. by integrate motor propelling unit according to claim 1, it is characterized in that: described water lubricated bearing (9) adopts the imperial material of match.
4. by integrate motor propelling unit according to claim 1, it is characterized in that: described water lubricated bearing (9) is provided with circular groove with the fitting surface of outer rotor (2), allow fluid to enter in described circular groove and lubricate described water lubricated bearing (9).
5. by integrate motor propelling unit according to claim 1, it is characterized in that: described end cap one (7) is affixed with housing one (12), and the formation seal cavity two (13) that is tightly connected therebetween, control circuit board (14) is packed in housing one (12), the lead-in wire of excitation winding (4) is connected to control circuit board (14) by electric connector (15), electric connector (15) is contained on end cap one (7), end cap one (7) is provided with through hole, described through hole makes seal cavity one (16) be communicated with seal cavity two (13), the control circuit of control circuit board (14) is drawn by underwater electrical connector (17).
6., by integrate motor propelling unit according to claim 5, it is characterized in that: described control circuit board (14) is provided with power model (141), between power model (141) and housing one (12), be evenly coated with heat-conducting silicone grease.
7., by integrate motor propelling unit according to claim 1, it is characterized in that: the periphery of described screw propeller (3) is provided with fairing (11), fairing (11) is fixedly supported on end cap one (7) and/or end cap two (8).
8., by integrate motor propelling unit according to claim 5, it is characterized in that: the periphery of described screw propeller (3) is provided with fairing (11), and fairing (11) is fixedly supported on housing one (12) by pole (18).
9. by the integrate motor propelling unit described in the arbitrary claim of claim 1 to 8, it is characterized in that: described end cap two (8) is affixed with housing two (19), and seal therebetween, housing two (19) is with the axially extending bore communicated with outside, described axially extending bore extends to housing two (19) inside, pressure compensation film (20) is fitted in housing two (19) by hold-down ring (21), and pressure compensation film (20) covers described axially extending bore, hold-down ring (21) is affixed with housing two (19), spring (22) is provided with between the outer wall of pressure compensation film (20) and described axially extending bore extension, end cap two (8), seal cavity three (23) is formed between housing two (19) and pressure compensation film (20), end cap two (8) is provided with through hole, described through hole makes seal cavity one (16) be communicated with seal cavity three (23).
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| CN201410093845.XA CN103818535B (en) | 2014-03-14 | 2014-03-14 | Integrate motor propelling unit |
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| CN201410093845.XA CN103818535B (en) | 2014-03-14 | 2014-03-14 | Integrate motor propelling unit |
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| CN103818535A CN103818535A (en) | 2014-05-28 |
| CN103818535B true CN103818535B (en) | 2016-04-13 |
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| CN102295065A (en) * | 2011-06-10 | 2011-12-28 | 中海油田服务股份有限公司 | Propeller propulsion unit of underwater autonomous navigation platform |
| CN202167942U (en) * | 2011-06-29 | 2012-03-14 | 江苏华阳重工股份有限公司 | Integrated propulsion device of marine permanent magnetic machine propeller |
| CN102849200A (en) * | 2011-06-29 | 2013-01-02 | 江苏华阳重工股份有限公司 | Marine permanent-magnet electromotor and propeller integrated propulsion unit |
| CN202414147U (en) * | 2011-11-21 | 2012-09-05 | 中国船舶重工集团公司第七一二研究所 | Integrated thruster |
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| CN103818535A (en) | 2014-05-28 |
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