44results about "Rotary propellers" patented technology

A variable toroidal propeller (10) is proposed, comprising a hub (12) and toroidal propeller blades (14) connected to the hub (12). The hub (12) is configured to operably couple the blades (14) to an actuator (44), and the blades (14) are configured to deform when the actuator (44) is operated.

The application provides a scalable propeller hub cap fin for a ship, and belongs to the field of ship propulsion. The application solves the problem of poor energy-saving effect of a traditional cap fin in the whole voyage. The application comprises a propeller hub, a plurality of blades which are uniformly distributed on the propeller hub, a propeller hub cap which is arranged at the rear end of the propeller hub, a plurality of fin blades which are arranged one by one and correspond to each blade, all the fin blades are in sliding connection with the propeller hub, and a hydraulic adjusting device which is arranged in the propeller hub cap and is used for driving each fin blade to extend out of the propeller hub or retract. The application is mainly used for changing the running state of the propeller.

The application discloses a longitudinally foldable water-air dual-purpose propeller, and belongs to the technical field of cross-medium aircraft propulsion, comprising a new-configuration hub, a longitudinal folding mechanism, a limiting structure and a down-bending propeller blade with a preset down-bending angle; the configuration of the propeller enables the down-bending propeller blade to be completely unfolded to form a first working configuration through centrifugal force in air, and the down-bending propeller blade to be passively folded and limited to form a second working configuration through hydrodynamic lift in water; the longitudinally foldable water-air dual-purpose propeller can automatically complete mode switching according to the difference between working media without any active control mechanism, and can maintain high efficient propulsion performance in both media.

Described herein is a rotor blade assembly (100) and a method for generating a lift in a fluid installation. The rotor blade assembly includes an arcuate rotor blade (102) that is configured to be rotated about its axis Y. One or more motion transmitting members (106, 114, 116) are provided that connect the arcuate rotor blade with at least one power generating member (104) for transmitting torque from the arcuate rotor blade to the at least one power generating member (104). The fluid incident on the arcuate rotor blade is caused to flow over a first leading edge L1 of a rotor blade towards a central rib R of the rotor blade (102). This fluid flow is then caused to flow along the central rib R of the rotor blade towards a stem section of the rotor blade from where the fluid exits, thereby causing rotation of the rotor blade.

This invention relates to the field of marine propulsion technology, specifically to an auxiliary propulsion structure for electric ships. The structure includes a ship hull, a propeller mounted on the bottom of the hull, and rotating rods fixedly connected to both sides of the hull. An auxiliary propeller is mounted on each rotating rod. Through an idling cooling mechanism, when the water inlet is above the water surface, causing the drive rod to drive the auxiliary propeller to idle, the idling cooling mechanism opens an emergency water path. This allows pre-stored cooling water from the tank to be precisely delivered via drip pipes to the junction of the drive rod and the bearing. This directional dripping forms a water film at the friction interface, providing immediate lubrication and drag reduction, as well as rapid heat absorption and cooling, preventing high-temperature wear, deformation, or sintering of components. Compared to traditional unprotected designs, this mechanism is fast-responding and highly targeted, minimizing damage to core components during idling and ensuring reliable operation of the auxiliary propeller in complex waters.

The invention relates to a water sport device, in particular a foilboard, comprising a floating body (4), preferably in the form of a floating board, and a foil device (6) which is secured to the floating body (4) by means of a retaining device (8), wherein the foil device (6) arranged on a link (10) of the retaining device (8) has at least one, preferably at least two foils (16), and the foil device can be transferred via the retaining device (8) from an idle and / or starting position close to the floating body (4) into an operating position below the floating body (4), wherein, in the operating position and during a forward movement, due to an uplift force caused by the foil device (6), the floating body (4) can be transferred into a position in which it is spaced apart from the surface of the water, wherein at least one propulsion device (50) is provided which has at least one motor designed preferably as an internal rotor, which can be controlled by means of a control unit and which is provided for propelling the water sport device and designed in particular at least partially as part of the foil and / or retaining device (6, 8) or arranged on one of these or between these.

Provided is an evaluation system comprising a removal means which removes fouling from a surface of a propeller of a vessel, a determination means (412) which determines a fouling degree of the surface of the propeller before the fouling is removed and surface roughness of the propeller after the fouling is removed, and an output means (46) which outputs the fouling degree and the surface roughness.

There are included: a motor contained in a top cover; a vertical shaft that is rotationally driven by the motor, the vertical shaft being contained in an extension casing; and a propeller that is rotationally driven by the vertical shaft, the propeller being provided at a gear casing. A heat exchanging member is provided that is positioned below an anticavitation plate and above a propeller shaft that rotationally drives the propeller, and inside the heat exchanging member, a cooling oil channel member is provided that cooling oil for cooling the motor flows through.

The present invention relates to a ship flow control system having a pre-swirl flow control fin, wherein a swirl flow is generated opposite to the propeller rotation direction such that the ship propulsion efficiency is improved without increasing cavitation and hull fluctuation pressure occurring in the upper portion of the starboard of the ship. The ship flow control system comprises a flow control fin installed in a curved portion of the stern of the port side of the ship positioned in front of the propeller so as to be inclined toward the lower side with respect to the basic flow direction of seawater, thereby inducing the seawater flow direction to face the lower side of the propeller. By generating a swirl flow in the counterclockwise direction, which is opposite to the propeller rotation direction, such that the ship propulsion efficiency is improved without increasing cavitation and hull fluctuation pressure occurring in the upper portion of the starboard of the ship.

This utility model belongs to the field of underwater robot technology and discloses an underwater inspection and survey robot, including a support frame, a control box installed inside the support frame, a camera installed inside the control box, an extension plate installed inside the support frame, a mounting bracket installed on the lower surface of the control box, an outer shell fixedly connected to the mounting bracket, the outer shell being located on the lower surface of the control box, a cross-shaped component fixedly connected inside the outer shell, a motor body fixedly connected to the outside of the cross-shaped component, a filter plate rotatably connected inside the outer shell, a connecting rod connected to the output end of the motor body, a fan blade connected to the other output end of the motor body, and a cutting component fixedly connected inside the outer shell. This utility model achieves underwater propulsion by the motor driving the fan blade, and the other end drives the filter plate to rotate via the connecting rod. The filter plate blocks debris and prevents accumulation, effectively reducing the interference of debris on the components.

A hydrofoil vehicle comprises a frame and at least one foil. The vehicle comprises a moveable control surface configured to control a pitch of the vehicle, in use. A locking mechanism is provided for restricting movement of the control surface when the vehicle is not foiling, for example during launching. In examples, the locking mechanism activates automatically when the hydrofoil vehicle is not foiling. In examples, the vehicle is human powered.

The disclosed propeller assembly can include thrust rings that can be individually selected for adjusting propeller drive performance, each of the plurality of thrust rings can be configured for connection with a propeller hub of the propeller drive assembly as a rearward extension from the propeller hub for configuring thrust generated under operation of the propeller drive assembly.

The invention relates to a device for reducing the driving power requirement of a watercraft, in particular a ship, and for arranging in front of a ship propeller in the direction of flow, comprising a flow guidance surface, in particular a nozzle ring or a partial nozzle ring, at least one inner fin projecting from the flow guidance surface, wherein an end of the inner fin is attached to the flow guidance surface and wherein, when the device is installed in a watercraft, another end of the inner fin is attached to a watercraft, and at least one outer fin projecting from the flow guidance surface, wherein one end of the outer fin is attached to the flow guidance surface and wherein another end of the outer fin is designed as a free end, wherein the at least one inner fin and / or the at least one outer fin are produced from a composite material.

The application discloses a kind of auxiliary equipment suitable for water surface photovoltaic support batch installation and its use method, the auxiliary equipment includes: two floating bodies, each the floating body is detachably assembled by several floating boxes, for providing water operation platform and buoyancy support;Two drive assemblies, each the drive assembly is set at the bottom end of the corresponding floating body, for realizing the travel, steering and parking of the corresponding floating body on the water surface;Two vertical telescopic support assemblies, each the vertical telescopic support assembly is arranged in the middle of the upper end of the corresponding floating body, for adjusting the overall height of hoisting assembly;The hoisting assembly is respectively connected with the movable end of two the vertical telescopic support assemblies at both ends, for hoisting photovoltaic support.The auxiliary equipment of the application significantly improves the mechanization level and operation safety of water photovoltaic construction through integrated and modular design, and then realizes the positioning accuracy, operation mechanization and process intensification of water photovoltaic support installation.

The modified variable spiral cylinder of the present invention is basically based on a spiral in space. A spiral starts from a point in space, rotates around a central axis, traces a trajectory, and has a shape similar to that of a commonly seen spring. The elements that define a spiral are the radius, pitch, and height of the spiral. A variable spiral is a spiral in which the radius and period are modified, and in the present invention, it is characterized by a shape in which the radius of the lower end becomes smaller as it goes up. The modified variable spiral (mVHC) is another modification of the variable spiral, and its most notable feature is that the outlet section of the variable spiral is modified to be almost parallel to the central axis of rotation.

There is provided a twin rudder arrangement (300) for a craft (250). The twin rudder arrangement (300) comprises a first rudder blade (310) and a second rudder blade (320), wherein the first rudder blade (310) and the second rudder blade (320) are configured to be provided at either side of a propeller (200) of the craft (250). At least part of the first rudder blade (310) or the second rudder blade (320) comprises a vortex generator arrangement (400), wherein the vortex generator arrangement (400) is arranged to induce vortices in fluid flow passing / interacting with the twin rudder arrangement (300). Also provided is an aircraft or watercraft comprising at least one twin rudder arrangement (300).

The application relates to a high-efficiency magnetic coupling structure for propelling a deep-sea vehicle, which comprises coaxially arranged inner and outer magnetic hubs and a composite pressure-resistant cover body; the inner magnetic hub is used for connecting a driving shaft, and the outer conical surface of the inner magnetic hub is provided with a first magnet array; the composite pressure-resistant cover body is arranged outside the inner magnetic hub, and the large-diameter end of the composite pressure-resistant cover body is provided with a mounting part used for sealingly connecting with a vehicle body; the outer magnetic hub is arranged outside the composite pressure-resistant cover body, and the inner conical surface of the outer magnetic hub is provided with a second magnet array which is magnetically coupled with the first magnet array; the composite pressure-resistant cover body comprises a plurality of conical frustum-shaped magnetic conductive core bodies which are arranged in layers and a conical frustum-shaped sealing pressure-bearing shell which is arranged outside the core bodies; the conical sidewalls of each magnetic conductive core body and the sealing pressure-bearing shell are provided with axially extending magnetic isolation gaps, and the magnetic isolation gaps on the layers are arranged in a circumferential direction and are staggered with each other. The structure can reduce eddy current loss and improve transmission efficiency while ensuring sealing through the multi-layer staggered and conical frustum-shaped cover body.

A testing device for testing a drive train or components within a marine propulsion system is provided and includes a first disk with a plurality of first disk depressions that faces a second disk with a plurality of second disk depressions. The first disk and the second disk are secured relative to each other so that they define a space, and a seal at outer edges of the disks is in fluid communication with the space. One of the first disk and the second disk is secured to a driven shaft. Upon rotation of the driven shaft, a load is produced due to shearing of fluid between the disks, yet no thrust is produced.

A device (10; 110) for a propeller (12) includes a body (18; 118), an inlet device (20; 120), and an outlet device (22; 122). The body (18; 118) is configured to be coupled to or form a portion of a hub (14) of the propeller (12). The inlet device (20; 120) is configured to receive a portion of a fluid passing outside the body (18; 118). The outlet device (22; 122) is configured to direct the fluid away from the body (18; 118). The device (10; 110) is configured to convert a flow of fluid received by the inlet device (20; 120) into an axial flow of fluid output from the device (10; 110), thereby preventing or at least mitigating formation of hub vortices downstream of the propeller (12).

A boat and a propeller assembly for a boat. The propeller assembly includes a propeller and a thrust bearing, and the thrust bearing is made of a harder material than the propeller. The boat may also include a hull, a drive shaft, and a motor. The motor may be positioned within the hull and configured to rotate the drive shaft. The drive shaft may extend through a hull bottom of the hull and the propeller assembly may be positioned forward of a transom of the hull and beneath the hull bottom. The propeller may include a central hub having a hole capable of having the drive shaft inserted therethrough. The thrust bearing may be located in the hole of the central hub and secured to the propeller such that the thrust bearing and the propeller form a unified assembly.

The present invention relates to a propeller (5), preferably for hydrodynamic propulsion, comprising a hub (7) rotating about a rotation axis (X), at least three blades (9) extending from the hub (7), wherein the blades (9) are angularly evenly distributed from the hub (7) about the rotation axis (X), and wherein the propeller (5) is characterized in that the blades (9) are axially offset relative to each other along the rotation axis (X). The invention also relates to a means of transportation, preferably a marine vehicle, more preferably a ship, comprising such a propeller (5), and to a motor configured to drive the propeller (5), wherein the motor is preferably an electric motor.

A control system and a control method of a propulsion device of a semi-submersible ship, state data of a ship propulsion device is used to control the ship to run to realize the corresponding working state, the control system comprises: an operation module for acquiring first state data of the propulsion device; a detection module for detecting running data of the ship; a processing module capable of obtaining second state data of the propulsion device based on the running data; a judgment module capable of obtaining the deviation value of the first state data and the second state data, and outputting a judgment result based on the relationship between the deviation value and the preset threshold value; a control module capable of outputting a corresponding control signal according to the judgment result, and controlling the ship to run based on the control signal. The application can adjust the working state of the ship according to the running data in real time, so that the propulsion device is not adjusted frequently, and the stable working state of the ship is maintained within a certain threshold range.

The present invention relates to a boat drive (10) for driving a watercraft, comprising a drive housing (12) made of a first metallic material (M1) and a propeller shaft (14) made of a second metallic material (M2), wherein the propeller shaft (14) is designed to receive a drive propeller (30) and the propeller shaft (14) is mounted in the drive housing (12), wherein a propeller shaft insulator (20) is provided which is designed and configured to electrically insulate the propeller shaft (14) from the drive housing (12).

The invention relates to a propeller arrangement in a cathodic protection system for a marine vessel with a marine propulsion system, which cathodic protection system comprises a direct current power source with a positive terminal. The propulsion system comprises at least one driveline housing at least partially submerged in water; a torque transmitting drive shaft extending out of the driveline housing; and at least one propeller mounted on the drive shaft. According to the invention, the at least one propeller is electrically isolated from its drive shaft. Each electrically isolated propeller is electrically connected to a slip ring connector, which slip ring connector is in electrical connection with the positive terminal. The invention further relates to a vessel provided with such a propeller arrangement.

The propulsion unit including a casing having an inner curved surface and an outer curved surface, at least one tire disposed within the casing within a duct defined by the inner curved surface and the outer curved surface, a first propeller and a second propeller having a plurality of blades extending from within the casing toward a center axis of the casing, and one or more motors housed within the casing, the one or motor being configured to operate the at least one tire, the first propeller, and the second propeller independently of one another. There is also provided a vehicle with one or more propulsion units of the present disclosure.

The invention provides a propeller blade and a ship propeller, relates to the technical field of propellers, and solves the problems that the working efficiency of the propeller blade is reduced, the energy consumption of a ship engine is increased by increasing the length of the propeller blade to improve the efficiency, and the collision risk is high. The propeller blade comprises a small blade structure and a blade body with an upstream blade surface and a blade following edge, the small blade structure is only fixedly arranged at the blade tip end of the blade body, or the small blade structure is only fixedly arranged at the blade tip end of the blade body and a connecting section of the blade following edge and the blade tip end; the small paddle structures extend in the direction away from the water facing blade surface; a non-zero included angle is formed between the upstream face of the small paddle structure and the upstream surface of the paddle body, so that a container structure for containing water flow is formed. Water flow is held under the action of centrifugal force and is fully accelerated in the container structure, and under the condition that the size of the propeller is kept unchanged, the propelling efficiency is effectively improved, the energy consumption is reduced, and the risk of colliding with underwater obstacles is reduced.

The application discloses a shaftless rim built-in pressure compensation propeller and bearing-free support structure, comprising a static support, a rotating duct and a propeller. A closed cavity is formed in the static support, and an elastic sealing compensation body capable of elastically deforming is arranged in the cavity, which is used for compensating the cavity volume change caused by thermal expansion and contraction of the medium and shell structure deformation. The rotating duct and the static support are matched by a taper surface and a taper hole to form a gap, and when working, external water flow enters to form a water film, thereby realizing bearing-free support, lubrication and cooling. The application is compatible with inner rotor and outer rotor structures, is suitable for gas or liquid medium, has compact structure and reliable sealing, and can be widely applied to underwater robots, ship auxiliary propulsion and underwater operation equipment.

The utility model relates to ship propulsion auxiliary equipment technical field discloses an energy -saving fairing structure for ship, including fairing body and fairing ring, the rear end inner wall of fairing body is connected with adjusting assembly, adjusting assembly includes fixed ring, the utility model compared with prior art's advantage lies in: through adjusting assembly, can adjust the position of fairing ring in the fairing body, adapts the propeller of different rotating speed, ensures that can form stable flow field under the propeller different working condition, has improved the adaptability, the fairing body adopts the horn -like structure, cooperates the arc fairing piece of fairing ring inner wall, can effectively carding water flow, reduces the wake vortex, reduces energy loss, improved energy -saving effect, through the elasticity sealing gasket can strengthen the sealing property of fairing body and ship propulsion system junction, avoids water seepage, prevents the slip line and improves the connection stability simultaneously.