CN103818535A - Integrated motor propelling device - Google Patents
Integrated motor propelling device Download PDFInfo
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- CN103818535A CN103818535A CN201410093845.XA CN201410093845A CN103818535A CN 103818535 A CN103818535 A CN 103818535A CN 201410093845 A CN201410093845 A CN 201410093845A CN 103818535 A CN103818535 A CN 103818535A
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Abstract
An integrated motor propelling device comprises an inner stator and an outer rotor formed by laminating silicon steel sheets; the inner stator and outer rotor both have salient pole structures; an exciting winding is wound on salient pole teeth of the inner stator; multiple permanent magnets are embedded in the inner stator along the circumferential direction; the permanent magnets are arranged by corresponding to the exciting winding; a magnetizing sealing shield is arranged between the inner stator and outer rotor; two ends of the magnetizing sealing shield are respectively, fixedly and hermetically connected with an end cover I and an end cover II; the inner stator is positioned in a sealing space I formed by the magnetizing sealing shield, the end cover I and the end cover II; the two ends of the inner stator are respectively fixedly connected with the end cover I and the end cover II; two ends of the outer rotor are respectively rotationally supported on the end cover I and the end cover II by a water lubricating bearing; rubber dampers are arranged between the end covers I and II and the corresponding water lubricating bearings; a propeller is fixedly connected with the outer rotor. A motor and the propeller are integrated, the size and weight are reduced, the vibration and noise are effectively reduced, and the propelling efficiency and work reliability are improved.
Description
Technical field
The present invention relates to underwater propulsion unit, thereby be specifically related to, by screw blade is fixedly connected with to the propelling unit that motor and propelling unit are become one with rotor, relate in particular to the permanent magnetism propelling unit that is applicable to deep-sea mobile workstation.
Background technology
Thrust unit is a kind of widely used engine installation under water, be 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 navigate by water motion and attitude adjustment.
At present, thrust unit is generally combined by independent electrical motor and screw propeller under water, as disclosed in Chinese patent ZL200620055186.1 " a kind of electrical underwater propeller ", because motor and screw propeller are separate component part, motor need to pass through coupler, the drivings device such as magnetic couple drive screw propeller, therefore this kind equipment complex structure, consumption material is many, in power transmission process, consume is large, noise is high, and screw propeller is to be directly fixed on motor mechanical axis substantially, therefore, in the time of sealing, need to adopt movable sealing structure, and movable sealing structure exists working accuracy high, the problem that sealing effectiveness is poor, under abyssal environment, adopt the poor and inconvenient maintenance of the functional reliability of propelling unit of movable sealing structure.
Along with the appearance of electric propulsion, in prior art, there is the integrated motor propelling unit of machine oar, this propelling unit adopts brshless DC motor to drive conventionally, but use brshless DC motor to drive the efficiency under low speed operating mode lower, in prior art in order to improve the efficiency of low speed operating mode and to provide enough large torque often to need additional configuration gear reducer, the configuration of gear reducer has not only increased the volume and weight of propelling unit, in operational process, also can produce larger vibration noise, 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 integrated motor propelling unit of the existing machine oar for deep-sea mobile workstation: first, the control setup of many covers propulsion electric machine that deep-sea mobile workstation carries is generally 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, in driving tank, each actuating device radiating condition is 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, causing need to larger thickness and the motor seal shell of air gap, affects the driving efficiency of motor, the 3rd, need to use rotor-position sensor Real-Time Monitoring rotor-position, but existing rotor-position sensor fault rate is high, has affected the functional reliability of propelling unit.
Summary of the invention
The applicant improves for above-mentioned shortcoming of the prior art, and a kind of integrate motor propelling unit is provided, its make motor and screw propeller into a single integrated structure, volume is little, lightweight, and noise is low, propulsion coefficient is high, the simple and good sealing effect of hermetically-sealed construction, and 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 form by silicon steel plate stack, 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 is inner along circumferentially rabbeting and have multiple permanent magnets, the corresponding excitation winding setting of permanent magnet, between internal stator and outer rotor, be provided with magnetic conduction seal closure, 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 form, 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 rotationally by water lubricated bearing respectively, between end cap one, end cap two and corresponding water lubricated bearing, are respectively equipped with rubber absorbers, and screw propeller and outer rotor are 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 lubricated described water lubricated bearing.
Described end cap one is affixed with housing one, and between the two, be tightly connected and form seal cavity two, 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, between power model and housing one, is evenly coated with heat-conducting silicone grease.
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 between the two, housing two with the axially extending bore of exterior, described axially extending bore extends to housing two is inner, 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 are affixed, between the outer wall of pressure compensation film and described axially extending bore extension, be provided with spring, between end cap two, housing two and pressure compensation film, form seal cavity three, 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, increase output torque with the magnetic flux density that improves air gap, greatly improve 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 operating mode efficiency is higher, and on thrust face and radial support face, be provided with rubber damper, significantly reduced the vibration noise of propelling unit.
2, the present invention connects as one screw propeller and outer rotor, make motor and screw propeller into a single integrated structure, save the power transmission between motor and screw propeller, save traditional main driving axle, thereby avoid the degradation of energy of intermediate transmission link, the noise and vibration while effectively reducing device operation; Adopt the water lubricated bearing with circular groove, make fluid enter in circular groove and lubricated described water lubricated bearing, can guarantee between outer rotor and water lubricated bearing, to form stable lubricating film, thereby can greatly reduce the wearing and tearing of water lubricated bearing, and reduce noise and vibration; On the other hand, owing to having saved traditional main driving axle, avoid thus main driving axle sealing problem, do not need to adopt the movable sealing structure that working accuracy of the prior art is high, sealing effectiveness is poor or configure extra magnetic coupling, thereby greatly improved system works reliability and propulsion coefficient, reduced volume, weight and the cost of propelling unit simultaneously.
3, the integrated control setup being provided with control circuit board of propelling unit of the present invention, further improve system integration integrated level, cancel traditional propelling and driven tank, avoid the electromagnetic interference between many cover control setups, adopt pulse detecting method rotor position sensing with timed unit, cancelled the use of the high rotor-position sensor of fault rate, greatly improved system works reliability, the quantity of simultaneously also having saved underwater electrical connector and watertight cable, has reduced 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, make after lower water, oil pressure in propelling unit and external sea hydraulic pressure always keep balance, and according to maximum working depth under water, the oil-filled amount in advance that can adjust 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.
The specific embodiment
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 form by silicon steel plate stack, 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, be that internal stator 1 is evenly distributed with 6n outside salient pole on circumference, outer rotor is evenly distributed with 4n inside salient pole on circumference, as an embodiment, Fig. 3 has provided the version that the rotor in the time that 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 is inner along circumferentially rabbeting and have multiple permanent magnets 5, the corresponding excitation winding 4 of permanent magnet 5 arranges, permanent magnet 5 preferably adopts radial magnetizing, it is consistent that the flow direction producing when excitation winding 4 is switched on produces flow direction to corresponding permanent magnet 5, so, the magnetic flux density that can improve air gap increases output torque, between internal stator 1 and outer rotor 2, be provided with magnetic conduction seal closure 6, 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, between end cap 28, adopt O RunddichtringO sealing assembling, 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 form, and the two ends of internal stator 1 respectively with end cap 1, end cap 28 fixedly mounts by flat key 24, the two ends of outer rotor 2 are supported on end cap 1, end cap 28 rotationally by water lubricated bearing 9 respectively, between end cap 1, 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, between the end cap 1 of two water lubricated bearings 9 and corresponding assembling, end cap 28, by interference fit, 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, allow fluid to enter in described circular groove and lubricated water lubricated bearing 9, so, in the time of outer rotor 2 smooth operation, guarantee to form stable lubricating film between outer rotor 2 and water lubricated bearing 9, such as the lubricating film of oil film or other fluid medium, thereby can greatly reduce the wearing and tearing of thrust baring, and reduce noise and vibration.
Further, in the propelling unit that integrated control setup setting is formed by rotor and screw propeller, particularly, described end cap 1 is affixed with housing 1, and be tightly connected and form thus seal cavity 2 13 by O RunddichtringO between the two, 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 and housing 1 adopts between the fastening installations of tightening screw and the two and be evenly coated with heat-conducting silicone grease, to reach the object of abundant heat radiation.
Further, described the present invention has additional pressure compensation structure, particularly, described end cap 28 is affixed with housing 2 19, and between the two, adopt O RunddichtringO sealing assembling, housing 2 19 with the axially extending bore of exterior, described axially extending bore extends to housing 2 19 is inner, 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, between the outer wall of pressure compensation film 20 and described axially extending bore extension, be provided with the spring 22 of rust protection, end cap 28, between housing 2 19 and pressure compensation film 20, form seal cavity 3 23, 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, whole propelling unit is not integrated propelling unit and pressure compensation structure are set in the situation that, described fairing 11 is fixedly supported on end cap 1 and/or end cap 28; Whole propelling unit is not integrated propelling unit and/or pressure compensation structure are set in the situation that, described fairing 11 is fixedly supported on housing 1 and/or housing 2 19 by pole 18.
In the situation that using large-scale propelling unit, because the diameter of screw propeller 3 is now very large, screw propeller is very heavy, conventionally need to adopt auxiliary pivot shaft to play a supportive role, auxiliary pivot shaft 26 two ends are fixedly supported on respectively on end cap 1, end cap 28, 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 improve the dynamic balance performance of device, can also effectively reduce noise and vibration simultaneously.
With the example that is applied as of deep-sea mobile workstation, operation scheme of the present invention is as follows:
See Fig. 2, before lower water, to being full of transformer oil in seal cavity 1 and seal cavity 3 23, spring 22 is pressed in laying in necessarily in pre-pressing state, 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 sea hydraulic pressure always keep balance, propelling unit of the present invention is by the end flange of housing 1 and the fixed installation of the hull of deep-sea mobile workstation, when work, deep-sea mobile workstation provides electric power and control signal by underwater electrical connector 17 for propelling unit of the present invention, control circuit board 14 carries out after rotor-position identification, excitation winding 4 is carried out to commutation control and current chopping control, the thrust that regulates outer rotor 2 rotating speeds and screw propeller 3 to produce, in air gap between internal stator 1 and outer rotor 2, form rotating field, drive rotor and drive screw propeller to produce hydrodynamic force, and transmit and advance by the water lubricated bearing 9 at outer rotor 2 two ends respectively, the thrust retreating.
Control circuit board 14 of the present invention to the commutation control of excitation winding 4 without additional rotor-position sensor of the prior art, by injecting square voltage pulse in all non-excitation phase winding to internal stator 1, detect its current impulse response signal and calculate the unsaturation inductance of each phase winding under different rotor position, according to the inductance of measuring in advance in linearity region with the one-to-one relationship of rotor position angle, adopt Function Fitting method to calculate in real time rotor-position, realize thus Real-Time Monitoring rotor position sensing, thereby the thrust that regulates outer rotor 2 rotating speeds and screw propeller 3 to produce, compared with prior art, without the high rotor-position sensor of operational failure rate, improve the functional reliability of propelling unit.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention, referring to claim, within protection scope of the present invention, can be done any type of modification.
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) form by silicon steel plate stack, 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) is inner along circumferentially rabbeting and have multiple permanent magnets (5), the corresponding excitation winding of permanent magnet (5) (4) arranges, between internal stator (1) and outer rotor (2), be provided with magnetic conduction seal closure (6), 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) form, 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) rotationally by water lubricated bearing (9) respectively, between end cap one (7), end cap two (8) and corresponding water lubricated bearing (9), be respectively equipped with rubber absorbers (10), screw propeller (3) is affixed with outer rotor (2).
2. by integrate motor propelling unit claimed in 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 claimed in claim 1, it is characterized in that: described water lubricated bearing (9) adopts the imperial material of match.
4. by integrate motor propelling unit claimed in 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 lubricated described water lubricated bearing (9).
5. by integrate motor propelling unit claimed in claim 1, it is characterized in that: described end cap one (7) is affixed with housing one (12), and between the two, be tightly connected and form seal cavity two (13), 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 claimed in 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 claimed in 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 claimed in claim 5, it is characterized in that: the periphery of described screw propeller (3) is provided with fairing (11), 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 between the two, housing two (19) with the axially extending bore of exterior, described axially extending bore extends to housing two (19) is inner, 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), between the outer wall of pressure compensation film (20) and described axially extending bore extension, be provided with spring (22), end cap two (8), between housing two (19) and pressure compensation film (20), form seal cavity three (23), 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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