101results about How to "Reduce draft" patented technology

An air diffuser for distributing air into a room from a supply duct of an air distribution system having: a frame member, wherein the frame member includes an inner surface, and an outer surface; an attachment member, wherein the attachment member is associated with the frame member, and further wherein the attachment member is configured for associating the air diffuser with a supply duct; and a diffusing member, wherein the diffusing member comprises a substantially hemispherical dome having an inner surface, an outer surface, and a plurality of apertures, and wherein the substantially hemispherical dome emanates away from the outer surface of the frame member.

The flaps (101) are fastened to the bottom of the boat, with hinges (122) and are extended under the moving boat to generate lift or cause drag. The area of the flaps (101) can be increased with extensions (102). Slots (104) are present on the flaps (101) to relieve vortexes and some drag. Lift amount can be regulated by the amount of flap presentation and by use of the extensions (102). Flaps are individually controllable or can be moved in unison. Increased drag will result from extreme extension of the flaps. The number of flaps, fastened to the boat forward of the stern, can be two, four or more if desired. Complete retraction of the flaps will result in a smooth bottom

The invention provides a flue-cured tobacco afloat and moist seedling raising method, and relates to a seedling raising method combining a moist seedling raising method and an afloat seedling raising method. The invention provides the flue-cured tobacco afloat and moist seedling raising method aiming at solving the disadvantages of less root hair, poor root activity and slow seedling restoration of the existing flue-cured tobacco afloat seedling raising. The method comprises the following steps: seeding, an afloat seedling raising phase, primary leaf clipping, a shallow water seedling raising phase, a moist seedling raising phase and seedling hardening. The flue-cured tobacco afloat and moist seedling raising method can cultivate sound tobacco seedlings with developed root hair, strong stem toughness and high stems without seedling restoration time basically, and is beneficial to realizing seedling raising technique normalization and seedling quality standardization, can reduce the disease infection and lower the production cost.

The invention discloses a U-shaped self-propelled wave power generation device. The wave power generation device comprises a ship body, a wave energy collection and conversion mechanism and a propelling mechanism; the ship body comprises a cabin, a cockpit, a device chamber, a deck and a tail plate, wherein the deck is arranged at the upper part of the cabin, the cockpit is arranged on the deck, the device chamber is arranged inside the cabin, and the tail plate is arranged at the tail part of the cabin; the wave energy collection and conversion mechanism comprises a front vertical pipe, a front air turbine generator set, a rear air turbine generator set, a rear vertical pipe and a horizontal pipe; and the horizontal section of the front vertical pipe is approximately triangular, and the horizontal section of the rear vertical pipe is quadrilateral, the vertical section of the horizontal pipe is pentagonal, and the front vertical pipe, the horizontal pipe and the rear vertical pipe sequentially communicate to form a U-shaped channel. The wave power generation device has the advantages that a foundation is laid for low cost, the wide sea area and high-efficiently utilization of thewave energy.

The invention relates to a dynamic positioning thrust system for an all direction propeller and a lifting rudder, which belongs to dynamic positioning technical equipment in the field of ship marine technology. The dynamic positioning thrust system comprises the all direction propeller and the lifting rudder. The all direction propeller is arranged below the stern part of a ship, and a C1 axial line thereof vertically intersects with a longitudinal symmetric axis of the ship; and the lifting rudder is arranged below the bow part of the ship, and a C2 axial line thereof vertically intersects with the longitudinal symmetric axis of the ship. In an abyssal environment, when the ship is in the executive process of performing dynamic positioning, the lifting rudder and the all direction propeller cooperate together to finish tasks of overcoming surging, swaying and yawing of the ship; and under a control instruction of a control system, the all direction propeller and the lifting rudder are controlled to implement thrust executive function of the dynamic positioning according to the established proposal. The technology of the invention can be applied to large size, medium size and small size ships or semi-submersible ocean platform, has a positive significance on improving the dynamic positioning technology, and can produce obvious economic benefit.

A patient interface device (2, 60, 160, 204) includes a cushion (8, 66, 210), a frame (10, 68, 162, 206) having a faceplate portion. The cushion is coupled to the frame. The faceplate portion has a main orifice and holes adjacent the main orifice. The device further includes a coupling conduit (6, 64, 164, 212) having an inlet end, an outlet end coupled to the inlet end, and a hood member having openings provided on an outer periphery thereof. The inlet end is structured to receive a flow of breathing gas. The outlet end is coupled to the main orifice to deliver the flow of breathing gas to the main conduit. The hood member surrounds the outlet end and is disposed over the holes such that exhalation gasses will through the holes and be captured by the hood member and directed through the openings.

The invention relates to waterborne floating transporting method used when construct super sized component such as dams for the power stations and bridges. Its program is: detecting fairways, forming sealed compartment with the cross beam and / or the longitudinal beam of trunk section of super sized component, forming inflatable air chamber with the within web of said cross and longitudinal beam; connecting the inflatable air chamber with compressed air source, putting the super component in waterborne fairways; aerifying the inflatable air chamber and forming air cushion between it and the surface and leading to the giant component floating on the water; regarding the towboat as power and driving the super component into waterways to floating and transporting. Its features are: installing independent ballast water tank on the both ends of longitudinal beam on the both sides of super component, ballast water tank is linked with the ballast pumping system to adjusting the ballast water of each ballast water tanks. The adaptability to component structure of the invention is better, adjustment and balance is easy and convenient to completing when in water run-time, so the overall floating and transporting performance of super component is more perfect.

A system to reduce drafts in front of a window is described. The system includes a window covering and a motor and gearbox that adjust the window covering. The system also includes a first temperature sensor, a second temperature sensor, and a microcontroller networked to the motor and temperature sensors. The first temperature sensor is positioned above the window covering within a thermal convection zone of a window associated with the window covering, and the second temperature sensor is positioned below the window covering within the thermal convection zone. The microcontroller instructs the motor to adjust the window covering based on a temperature gradient from the first temperature sensor to the second temperature sensor.

The invention discloses a caisson towing method. The caisson towing method includes the following steps that (1) after a caisson is manufactured in a dock, a plurality of longitudinal apron boards and a plurality of transverse apron boards are arranged at the bottom of the caisson, and are intercrossed to form a plurality of cabins; (2) water is injected to the dock until the water level is flush with the water level outside the dock, then a gate is opened, and a towing boat is connected with the caisson; (3) the cabins are inflated, so that the caisson floats, the towing boat tows the caisson to a sinking point, the cabins are deflated, then the caisson sinks, and towing of the caisson is finished. The caisson towing method effectively reduces the number of transportation machines used in the process and accidents caused by improper design and operation in the transportation process. The caisson lifts and floats by inflating the cabins, then the depth of immersion can be reduced in the towing process of the caisson, and therefore towing force is reduced, and towing safety can be ensured conveniently in shallow waters.

The invention discloses a remote-control airboat for collection and compression of lemna minor and a using method of the remote-control airboat, and belongs to the field of water environment treatment. The remote-control airboat comprises a constant immersion-depth airboat. A hydraulic transmission system and a lemna minor collecting, pressing and storing device are arranged on the constant immersion-depth airboat. The lemna minor collecting, pressing and storing device comprises a float grid, lemna minor collection rake teeth, spiral pressing water filters and water filtering perforated plates. The hydraulic transmission system is used for driving the lemna minor collection rake teeth so as to send lemna minor to the spiral pressing water filters. Lemna minor subjected to moderate pressing treatment enters a storage chamber so as to be compressed and stored. A fan of the constant immersion-depth airboat drives the airboat to advance. When the weight of lemna minor in the lemna minor collecting, pressing and storing device is increased, river water of corresponding weight is discharged from the airboat, so that the constant immersion depth of the airboat is ensured. The lemna minor collecting, pressing and storing device further comprises the water filtering perforated plates. The high ends of the water filtering perforated plates are mounted at the bottoms of the lemna minor collection rake teeth. The remote-control airboat realizes lemna minor filtering and compressing, and is strong in collection ability, and compressed lemna minor can be recycled.

A method for transporting very large structural member by floating it on the surface of water includes such steps as surveying and dredging the water channel, reforming the longitudinal beams and / or transverse beams of said very large structural member to becoming sealed cabins, communicating them with compressed air source, filling compressed air for make it float, and tracting it to destination by tugboat.

A multifunctional unmanned-boat twin-hull boat structure comprises a boat body, a supporting frame, a box body, a clamp, a propeller, a supporting board, four connecting boards, bolts and nuts. The four connecting boards are adopted to be connected with the two boat bodies to form a twin-hull boat structure, the boat bodies and the supporting frame are welded and fixed into a whole, remaining components are connected through bolts, and then the multifunctional unmanned-boat twin-hull boat structure can be dismounted conveniently and is beneficial to transportation. A streamline form is adopted by the surfaces of the boat bodies, the body bodies are wide and flat, and the head portions, left sides and right sides of the boat bodies are slightly sharp. The inclined angle between two sides of the supporting frame is 90 degrees, the supporting frame is L-shaped, the supporting board is respectively connected with two sides, with an inclined degree of 90 degrees, of the supporting frame through bolts, and then two gestures of the boat bodies can be adjusted. When the multifunctional unmanned-boat twin-hull boat structure is at a shallow position, the wide and flat sides of the boat bodies are floated above the water surface, namely, the boat bodies stand on the water surface transversely, the draft depth can be reduced, and the multifunctional unmanned-boat twin-hull boat structure is not grounded at the shallow position. When the multifunctional unmanned-boat twin-hull boat structure is at a deep position, the slightly-sharp ends of the boat bodies are floated above the water surface, namely, the boat bodies stand on the water surface vertically, the draft depth can be increased, and the stability of the unmanned boat on the water surface is improved.

The invention relates to a dredging construction technology for urban inland rivers, which belongs to general river engineering, and has a patent classification number: E02B1 / 00. It is characterized in that the process includes the following steps: (1) underwater dredging, excavation and loading: (2) waterway transportation: (3) unloading and storage: (4) returning to the dredging site with an empty ship; The advanced technology is especially suitable for the dredging construction of urban inland rivers; the selection of equipment is reasonable, the movement is flexible, the operation is convenient, safe and efficient, the quality of dredging is reliable, and it meets the requirements of environmental protection. It is a construction technology integrating excavation, transportation and unloading operations.

A load out and float off method for a spar type structure or another structure such as a deck. The invention enables the load out and float off of a large diameter spar using existing Heavy Lift Vessels (HLV's). A U-shaped tank (U-tank) is utilized to artificially extend the length of the HLV and provide supplemental buoyancy to help lift the spar off the land ways. The U-tank provides supplemental buoyancy and water plane area to float the spar off the HLV. After HLV departure the U-tank is moved and placed beneath an adapter frame on the spar's hard tank. The U-tank is ballasted upward to reduce the hard tank draft and have the strake tips clear the channel bottom. The spar can then be brought alongside the fabrication yard quay for additional work and then towed down the channel to the open sea.

The invention relates to a high-speed ship on the basis of double inclinable screw propellers, and belongs to the technical field of ship propulsion. The double inclinable screw propellers are symmetrically distributed on the middle upper portion of the high-speed ship and can be reasonably inclined at certain angles, so that propulsion force has upward component force and component force in an advancing direction. The upward component force overcomes a part of the gravity of the high-speed ship, the immersion depth of the ship is reduced, and the resistance on the ship is decreased; and the component force in the advancing direction pushes the ship to advance. A tail fin screw propeller is arranged at the tail of the ship, the inclination position of the tail fin screw propeller can be changed, and the tail fin screw propeller can be matched with the front double screw propellers in an equilibrium manner, so that the ship can run stably. The high-speed ship overcomes shortcomings of poor stability of equilibrium of a common high-speed ship and poor mobility of the common high-speed ship, and has the advantages of capability of running at a high speed, excellent mobility and stability of equilibrium, and the like. Besides, the high-speed ship is low in cost and has popularization value.

A method for piecing a yarn at a rotor spinning machine comprising plural spinning stations, wherein more than five piecers are successively produced in a measuring phase and coordinates of measurement values and associated measurement values from individual measurements of the piecers are evaluated for averaging and determining a fiber band function taking into account a drafting reduced for the measurement values, which reflects the fiber flow behaviour in the form of the respective fiber band quantity supplied to the rotor as a function of the transport path of the fiber band feed. The speed of the fiber band feed is controlled in a delayed manner from the run-up of the yarn draw-off, dependent on the rotor speed, by the fiber band function, such that the fiber shortfall quantity being produced from the fiber band function is compensated by dynamic feed addition with respect to height and length.

The invention discloses a water-jet type marine engine. An annular water flow propeller is installed on the bottom or the two side faces of the bottom of a ship or a naval ship 1, and according to theannular water flow propeller, a left channel arm 8, a right channel arm 20, a front channel 7 and a rear channel 10 form an annular body. A T-shaped water-jet pipe 30 with the diameter equal to the diameter of the annular body is formed from the axial direction of the central part of the rear channel 10 to the direction opposite to the ship driving direction, after waterproof sealing is conductedon the water-jet pipe, the water-jet pipe is introduced to a ship tail portion 3, and a thrust jet hole 5 is equivalent to an air jet hole of a turbofan engine. By means of the water-jet type marineengine, the problems that an existing screw propeller for the ships is low in efficiency, high in noise and low in speed are solved.

The invention discloses a ship launching method, comprising the steps: step S100, installing airbags at the positions on the left and right sides of a ship; step S200, moving the ship to a cargo deckof a semi-submersible barge; step S300, the semi-submersible barge moving the ship with the airbags installed to a launching position for launching operation. By installing the airbags on the left andright sides of the ship, the ship can be provided with auxiliary buoyancy when the ship is launched, so that the draught depth of the ship is reduced, and the submerged depth of the semi-submersiblebarge, and the water depth requirement for the launching position are effectively reduced, the ship can be launched normally by virtue of the semi-submersible barge, which greatly reduces the cost caused by replacing with a semi-submersible barge with high launching capacity and deep-digging a ship sinking pit when the draught of the ship is deep.

The invention belongs to the technical field of hydrological survey, and discloses a hydrological water resource surveying device with a self-protection function. The hydrological water resource survey device comprises a device shell and an anchor cable, wherein the top of the device shell is fixedly provided with surveying equipment, and the bottom of the device shell is provided with two guide plates in parallel. Tension borne by the anchor cable is monitored in real time through the tension sensor and the pressure sensor, the water flow speed of stress of the anchor cable and the water pressure area of the device in water are determined, after the superposed pressure of the tension sensor and the pressure sensor reaches a set threshold value, the controller can start the motor, and the guide plate body can incline after transmission; when the guide plate body is impacted by water flow, upward component force can be generated, the whole device is lifted in water, the immersion depth is reduced, the impact area of the device by the water flow is reduced, the stress of the device is reduced, the stress of the anchor cable is reduced, and the anchor cable is effectively protected from being snapped.

The invention relates to an intelligent tilt adjustment system and belongs to the field of shipbuilding and upgrading and rebuilding of old ships. The frequent occurrence of shipwreck accidents is mainly caused by the fact that ships are unsteady and tilted and thus water enter. If tilting of the ships can be timely found and timely adjusted, the shipwreck accidents are avoided. The system can automatically monitor and adjust tilting of the ships, the balance of the ships is ensured, and no shipwreck accidents occur. The system is mainly composed of a tilt adjustment bin, a ship tilting monitoring controller and a high pressure gas supply system. Full-time and omnibearing automatic tilting adjustment can be achieved, and when the ships encounter the extreme danger and tilting adjustment isinvalid, the system can automatically alarm and automatically start emergency facilities. The externally hung air-cushion type intelligent tilting adjustment bin has damping and anti-shaking functions, the ships thus can rise and fall in water, and the tilting adjustment bin plays a role in lowering the center of gravity, maintaining the stability and relieving shaking. A pressure sensor can monitor cargo loading and balancing situations on the ships, and overload or load imbalance is prevented. An emergency monitoring controller can monitor any wreck danger and give an alarm.

The invention relates to the technical field of ship engineering, in particular to an aerofoil high-speed three-body yacht structure. The aerofoil high-speed three-body yacht structure comprises a hull, ducted fan propellers, aerofoil connecting arms, sheet bodies and an underwater propeller; the aerofoil connecting arms are correspondingly connected to the two sides of the hull; the aerofoil connecting arms are connected to the sheet bodies; the ducted fan propellers are arranged on the aerofoil connecting arms; and the underwater propeller is arranged at the tail part of the hull. Accordingto the aerofoil high-speed three-body yacht structure, the innovativeness is outstanding; through adoption of the special structure that airfoils are combined with the ducted fan propellers, the ground-effect wing navigation of a yacht at a high speed is realized, and the stability, comfort and operability of the yacht are also improved.

The invention discloses a flexible fishing system for water floating objects. The flexible fishing system comprises a fishing robot, a flexible blocking device and a sweeping robot, wherein the fishing robot is connected with the sweeping robot through the flexible blocking device, and the sweeping robot is matched with the flexible blocking device and used for feeding floating objects to the fishing robot. The cleaning robot with the small size is used for cleaning the floating objects on the water surface, collecting the floating objects in a large range and feeding the floating objects, sothat the technical problem that the efficiency of fishing the floating objects is extremely low in an existing conventional fishing mode is solved, the technical problem that the floating objects in ashallow water area, a narrow space area and a high-space low area cannot be effectively salvaged is solved.

The invention relates to a floating platform for harnessing wind energy, comprising a tower (1) with a wind turbine (2), and two horizontal, identical cylindrical floating elements (3) parallel to the main longitudinal axis of alignment, the tower and the floating elements being interconnected by bar structures (5). The floating elements are joined to a stabilising element (4) which is situated directly beneath the floating elements (3), said stabilising element comprising two substantially rectangular first concrete slabs (4a), which are solid or more lightweight, with a ribbed structure, arranged perpendicularly to the axes of the floaters and joined to said floaters by means of auxiliary structures.

The invention discloses a carrying system and a carrying method for a SWATH ship in entering and leaving from a port. The carrying system comprises the SWATH ship and a barge carrier, wherein the barge carrier is provided with a plurality of propping devices; the barge carrier can sail between ship bodies of the SWATH ship. The carrying method comprises a carrying preparing step, a carrying jointing step, a draft adjusting step and the like. Therefore, when the barge carrier sails between the ship bodies of the SWATH ship, the barge carrier and the SWATH ship can be jointed in a carrying manner; the SWATH ship is propped by the propping devices of the barge carrier so as to reduce the draft of the SWATH ship, so that the SWATH ship enters and leaves from the port with an extremely shallow draft, and thus the practicality of the SWATH ship is improved.

The invention discloses a vertical axis runner propulsor and a power generation hydrogen production ship using the same, comprising a vertical axis runner propulsor, a deflector, a buoy cabin liftingand lowering support device, a power generation system, a hydrogen production system and the like; The Hydrogen generator ship is the same in shape and small in volume as ordinary ship. The buoy cabinlifting and lowering supporting device can adjust the draught depth of the hull, adapt to various river conditions, and select different river sections for power generation according to the seasonalwater regime change. Vertical axis wheel propeller, concentrated and densely installed on the bottom of the ship, increase the installed capacity per unit area; The utility model is a lift-drag compound propeller, which is both a high-efficiency propeller and a high-efficiency hydraulic turbine, can run without additional power and driving device, and does not affect the power generation during running; The design of the air deflector not only increases the power generation capacity, but also does not occupy the space and affect the driving. The electricity generated is used to electrolyze water to produce hydrogen without grid connection and provides a stable source of hydrogen fuel for hydrogen fuel cell vehicles.