Marine propulsive arrangement

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to outboard propulsors. Proposed arrangement comprises the following components: thermal engine, first shaft, variator, second shaft coupled with screw propeller and control system. Variator incorporates unipolar generator fitted on first shaft and electrically connected with unipolar generator fitted on second shaft. Said shaft have no mechanical engagement and support first and second rpm transducers. Control system is connected with thermal engine rpm control unit, rpm transducers and excitation windings of unipolar motor and unipolar generator.

EFFECT: higher reliability, decreased weight and overall dimensions, lower level of interferences at power conversion.

7 cl, 3 dwg

 

The invention relates to the field of shipbuilding, specifically for motor-propulsion units ship electric propulsion systems.

Famous rowing electrical installation [RF patent №2392180, publ. 20.06.2010], consisting of a propeller of the motor connected to the propeller to the propeller via a gearbox and breakaway couplings. Propeller motor connected to a power source through a static frequency Converter. The structure also includes the frequency of rotation of the propeller, which is connected to the control system, the outputs of the latter is connected to the control inputs of the frequency Converter and breakaway couplings. The disadvantages of this setup are large mass, dimensions and elevated levels of electromagnetic interference and harmonic components in the current consumed from the vessel's network of electric transmission elements. In addition, the transfer of energy from thermal engine to the propeller motor and propeller screw is made through the path of conversion, calculated at full capacity, including the generator, static frequency Converter, gearbox and breakaway couplings, which reduces reliability and increases losses.

Known ship propulsion motor installation type "rotary column" [patent RF №2119875, publ. 10.10.1998,], PR is Nata for the prototype. The installation includes enclosed in a streamlined casing rowing birotational motor and two propellers rotating in opposite directions, namely, contrrolled mounted on the rotor shaft birotational engine and propeller mounted on the hollow shaft of the rotating stator coaxial shaft of the rotor.

The casing is installed to rotate in the horizontal plane. For professionals it is obvious, although the description is not directly said propeller motor unit are connected to a static frequency Converter, which, in turn, is connected to the grid and the generator driven by thermal engine.

In this rowing installing the transfer of mechanical energy from the heat engine to propeller screws through the path of conversion, calculated on the total power (including a power generator, a static frequency Converter). This reduces the reliability, increases the weight, dimensions, levels of electromagnetic interference and harmonic components in the conversion of electricity.

The problem solved by the invention - expanding Arsenal of tools and the creation of a new, reliable marine propulsion-propulsion systems with improved performance, due to the exclusion of the application of neline the data pulse energy converters.

Technical result achieved is:

- to improve the reliability and reduce the loss of the ship propulsion-propulsion systems;

in reducing weight, size;

- to reduce the level of electromagnetic interference and harmonic components of energy conversion;

- the ability to set the axis of the output shaft of the variator with CP propeller at any angle and in an arbitrarily oriented plane with respect to the input shaft.

The task is solved by changing the design of the facility.

Marine propulsion-propulsion system includes a heat engine equipped with a speed control unit of rotation and coupled to the first shaft with electrodynamic variator, which second shaft connected to the propeller screw. The shaft is not mechanically linked and they have, respectively, first and second speed sensors. The installation also includes a control system, this variable contains the unipolar generator, mounted on the first shaft and electrically connected to the unipolar motor mounted on the second shaft. When this control system is connected to the control unit rotation speed of the heat engine, with speed sensors and winding unipolar motor and unipolar generator.

In the possible implementation where the first and second shafts arranged at an angle to each other and in different planes.

Installation can be applied to the heat engine vertical, placed together with the control system in the hull, and the variator is placed in rotary gondola.

Marine propulsion-propulsion unit may additionally have a second propeller connected to the third shaft with the CVT, which contains additional unipolar motor, electrically connected to the unipolar generator, all shafts are not mechanically linked. On the third shaft has a third speed sensor connected to the control system, which is also connected to the excitation winding additional unipolar motor.

At least two shaft can be located in different planes.

The invention is illustrated in the Figures, on which - Figure 1 is a schematic diagram installation Figure 2 - placement of part of the equipment according to the scheme presented in figure 1 in the gondola "rotary speaker", and the use of a heat engine vertical. Figure 3 is similar to Figure 2, but with two engines and propellers.

The inventive system includes a heat engine 1 (e.g., turbine), which the first shaft 2 mechanically is coupled to the variator 3, specifically, unipolar generator 4, which is part of the variator. Thus, thermal engine 1 and unipolar generator variator installed on the same first shaft 2. The composition of the CVT also includes a unipolar motor 5 mounted on the second shaft 6, which also stopped the propeller 7 fixed pitch. On the shafts 2 and 6, the first and second speed sensors 8 and 9, respectively. The shafts 2 and 6 is not mechanically linked and can be on the same geometric axis and in the same plane, as shown in figure 1, or at a given angle (Figure 2, when using vertical turbine) and also - in the same or different planes. Unipolar machines 4 and 5 are electrically connected by means of the tire 10, and the excitation winding 11 is connected to the control system 12 (located on the hull and on 2 and 3 not shown), which has its other input connected to the speed sensors 8, 9, and control unit 13 by the rotation speed of the heat engine 1. As shown in figure 2, the variator 3 (with its unipolar machines 4 and 5 and the sensors 8 and 9) may be placed in the gondola 14 rotary column.

In some cases, a variable may contain two unipolar motor (Figure 3), and accordingly, two of the propeller. Additional unipolar motor 15 is connected to the third VA is om 16 with the second propeller screw 17. On the third shaft 16 also has a speed sensor (third speed sensor). Additional unipolar motor 15 is connected to a unipolar generator 4, and the excitation winding, and the third rotation sensor (Figure not shown)mounted on the third shaft 16, is connected to the control system 12.

In design, having three shafts (first: thermal motor - unipolar generator, the second unipolar generator - propeller; third: additional unipolar generator - second prop), all shafts are not mechanically linked. They can be located in the same plane, as shown in Figure 3: the shafts of the second and third on the same axis perpendicular to the axis of the first shaft. Perhaps the location of all of the shafts at an angle relative to each other. Possible implementation, when, for example, the first shaft lies in a different plane than the second and third, or first and second shafts in the same plane, and the third in another, or all three in different planes. "Junction" system on shafts allows any desired combination of the orientation angles of the shafts, as well as on the planes position of shafts (propeller).

Figure 2 and 3 presents the design with the propeller-type rotary column" in its composition. In the gondola 14 is a variator 3 with one or two unipolar motors. While Joe is the first engine and the control system can be placed in the hull.

The proposed marine propulsion-propulsion with one propeller propeller operates as follows.

The signals from the outside (top management level)supplied to the control system 12, via the control unit 13 by the rotation speed of the heat engine sets the rotation speed of the heat engine 1, which is controlled by the first speed sensor 8.

After dispersal of the heat engine 1, the field winding 11 homopolar generator 4 and unipolar motor 5 is supplied to the excitation current, the magnitude and polarity of which is set by the control system 12. Unipolar generator 4 generates a current that is passed on to the tire 11 to the input unipolar motor 5, which is driven at the rate specified by the control system 12, which is controlled by the sensor 8. The motor 5 causes the rotation of the propeller 7. The change in the value of the excitation current unipolar machines change the amount of power on the output terminals of the generator 4 and the second shaft 6. The change of direction of the excitation current unipolar machines change the direction of their rotation. When the operation of the unit at low speeds of rotation of the propeller 7, the signal control system 12 to the control unit 13, the rotation speed of the heat engine 1 can be reduced.

The unit with the second propeller in ntom 17 is similar. It causes the rotation of the additional unipolar motor 16, and the rotational speed is fixed by the third speed sensor.

Thus, the application of the invention electrodynamic variator on the basis of unipolar electric machines to transmit power from the shaft of thermal engine to the propeller (propeller) allows you to exclude the application of the pulse nonlinear frequency converters, calculated at full capacity, which allows to increase reliability and reduce losses marine propulsion-propulsion systems, to reduce the weight, dimensions, reduce electromagnetic interference and harmonics in the power system of the ship during the energy conversion. In addition, this allows the ability to install the axis of the shaft of the variator with CP propeller at an arbitrary angle with respect to the input shaft and in an arbitrary plane, and to use in designs with two propellers, including, with different spatial orientation.

1. Marine propulsion-propulsion unit, characterized in that it includes a heat engine equipped with a speed control unit of rotation and coupled to the first shaft with the CVT, which second shaft connected to the propeller the propeller shaft is not mechanically linked and installed on them, matched with the public, the first and second speed sensors, the installation also includes a control system, this variable contains the unipolar generator, mounted on the first shaft and electrically connected to the unipolar motor mounted on the second shaft, and a control system connected to the control unit rotation speed of the heat engine, with speed sensors and winding unipolar motor and unipolar generator.

2. Marine propulsion-propulsion unit according to claim 1, characterized in that the first and second shafts arranged at an angle to each other.

3. Marine propulsion-propulsion unit according to claim 1, characterized in that the first and second shafts are located in different planes.

4. Marine propulsion-propulsion unit according to claim 1, characterized in that the first and second shafts arranged at an angle to each other and in different planes.

5. Marine propulsion-propulsion unit according to claim 2, characterized in that it used a heat engine vertical, placed together with the control system in the hull, and the variator is placed in rotary gondola.

6. Marine propulsion-propulsion unit according to claim 5, characterized in that it further has a second propeller connected to the third shaft with the CVT, which contains augment the capacity unipolar motor, electrically connected to the unipolar generator, all shafts are not mechanically linked, on the third shaft has a third speed sensor connected to the control system, which is also connected to the excitation winding additional unipolar motor.

7. Marine propulsion-propulsion unit according to claim 6, characterized in that at least two shafts are located in different planes.



 

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Swing-out column // 2219101
The invention relates to shipbuilding, namely the swing-out columns, designed for installation on high-speed boats and serving to transmit torque from the engine to the propeller shaft and boat control

The invention relates to marine electric propulsion

The invention relates to shipbuilding and for the creation of devices for active control of ships, providing maneuvering of ships in confined conditions port and mooring in the sea

The invention relates to the field of shipbuilding, in particular to structures for ship propulsion and propulsion type rotary column, and can be used in the design and construction of vessels for various purposes

The invention relates to shipbuilding, in particular in the main propulsion installations of ships
Ship // 2072160

The invention relates to shipbuilding, particularly for outboard motors

FIELD: water transport facilities.

SUBSTANCE: proposed sea-going ice-breaking transport vessel has hull with keel, forecastle with deck house, fore pointed extremity, aft convex cochleariform lines, aft deck and propulsion-and-steering gears. Hull is additionally provided with flat bulb considerably projecting beyond fore perpendicular. Fore lines are made with U-shaped frames over entire height of side including forecastle superstructure with streamlined deck house; keel is rising in sternpost area; when it is stowed, its lower aft wedge-shaped edge projects beyond sternpost line. Aft cochleariform lines form section of deck which is oval in plan with transom inclined at angle of 45 deg. In underwater portion, lines smoothly change into side bulges-sponsons provided with passageways with longitudinal slots in their bottom part for motion of propulsion-and-steering gears over them. Side bulges-sponsons terminate in falling-out side on external side and falling-home side in their fore part so that line of maximum breadths in this area directed upward and sternward should cross the waterline at angle of 3-6 deg. Extreme breadth of hull over bulges-sponsons in the waterline area exceeds midship breadth. Bottom part of passageway has horizontal or slightly deadrise surface in cross-sections which passes to stern at angle of 1-3 deg. relative to waterline and extends to deck at angle of 45 deg. On both sides of its oval section made in form of shoulder perpendicular to hull CL. Propulsion-and-steering gear includes two all-moving struts with nacelles located in aft section of ship, motors in nacelles for rotating the propellers and load-bearing service lines running to struts from power module of vessel. Struts with nacelles are located on both parts of stern in bulges-sponsons. Each strut with nacelle has streamlined guide stud in form of spherical segment with base directed upward which is equipped with circular thrust sliding bearing over its perimeter; each strut has vertical shaft which is coaxial with segment and is rotated by motor in radial-thrust bearing of carriage located in passageway of bulge-sponson and driven by means of load-bearing service lines on four bevel gear wheels connected in pairs by means of transversal hydraulic cylinders of carriage and driven by hydraulic motors built in them; hydraulic motors are thrown into engagement with inclined toothed racks laid on either side from slot in bottom part of passageway. Width of this slot is equal to diameter of vertical shaft.

EFFECT: enhanced ice passability of vessel.

3 cl, 7 dwg

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