Method of destructing ice cover by vessel in compressed air flow

FIELD: transportation.

SUBSTANCE: method for destructing the ice cover by a vessel in a compressed air flow is proposed and done by excitation of resonant bending-gravity waves in the ice when the vessel moves. Simultaneously with the translational movement of the vessel an additional load is applied to ice, which is directed downwards and forming a gas-dynamic jet from the high pressure impeller, the nozzle of which is located below the bottom of the hull at an angle in a vertical plane to the longitudinal axis of the vessel and perpendicular to the horizontal, from fastened movable horizontal partitions on the axis of rotation, located in the forebody and after body of the vessel through the simultaneous fore-and-aft balance of the vessel by the stern. The high-pressure jet is sufficient to create maximum fore-and-aft balance of the vessel by the stern, resulting from the pressure of the gas-dynamic jet at a given height of opening of movable horizontal partitions that create aerodynamic lift capacity on the forebody of the vessel.

EFFECT: invention helps to increase the efficiency of ice cover destruction.

3 cl, 3 dwg

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: source of high or ultrahigh pressure are electrically isolated electrodes connected on the non-working end to the generator of impulses with a high or ultrahigh potential difference. The electrically isolated electrodes are mounted symmetrically in the conical or hemispherical bell combining in itself the role of concentrator of pressure from electrohydraulic effect at the corona discharge in the bell with subglacial water and the role of negative electrode. The rope system is implemented according to the flexible shaft layout.

EFFECT: offered invention improves technological effectiveness and efficiency of the device for clearing from ice of open reservoirs and water courses.

1 dwg

FIELD: transport.

SUBSTANCE: this method relates to setting of underwater vessels overboard the ship in ice conditions. Strong air-inflatable tanks are used to make a bunch of required length to be secured at two bars aboard the ship. Produced structure is lowered in water to inflate said tanks and to push broken ice off the board. Note here that inflated structure draft exceeds the ice draft owing to deadweight.

EFFECT: higher safety, accelerated handling of submarines and other underwater equipment.

FIELD: blasting operations.

SUBSTANCE: explosive charges are placed under the ice and undermined in sequence with the time interval equal to the time of passage of flexural-gravitation wave from the place of undermining the previous to the place of undermining the subsequent charges. Above the ice cover the explosive charges are placed and undermined simultaneously with undermining the charges placed under the ice cover. At that, before the placement of the explosive charges the speed and direction of wind, undercurrents and drifts of ice fields is measured, the thickness of ice is determined. The explosive charges are placed with the formation of the direction of propagation of the blast wave in the opposite directions from the location of marine object of economic activity. The watercraft influencing the ice cover is equipped with a source of gas and a system of its supply with a collector and comprises a cable-rope, the other end of which is connected through the electromagnetic breaker with the ballast. The charges are placed in watertight casings made in the form of a ball. The cable-rope is connected to the balls by the fuse lighter. The charges are made in the form of the volume-detonating mixture.

EFFECT: increase in reliability of protection of marine objects of economic activity.

2 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: method is implemented by creation ship trim by the stern, and buoyancy force due to drainage of the ballast tanks. At that the ship is provided with additional buoyancy force that is periodically changed with frequency equal to natural frequency of the resonance bending-gravitational waves generated in ice cover by pulse load.

EFFECT: increased efficiency of ice destruction by submarine.

4 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly to ice breaking facilities operated in combination with tug. Propose ice breaking adapter pushed by pusher tug is intended for making of navigable waterways in ices. Adapter hulls are composed of front and two lateral rigidly interconnected frame structure for tight contact with pusher tug. Said hulls feature a broken flat stern in shape approximating to triangle at waterline level. Lateral hulls feature equal width and are shifted downward from the main hull so that the line extending through their stems level with the waterline is spaced from the parallel line extending level with waterline through main hull stem-post at least 0.1 of the main hull width in its midship. Said lateral hulls are located on both sides from the main hull so that their midship planes are spaced from ice breaker midship plane by distance I defined by the formula: m, where Bf and Bl are widths of the front and lateral hulls in midship plane. Device for tight contact of said adapter with pusher tug is arranged at frame structure to extend by magnitude b making at least 3 m beyond the line passing through lateral hull stem-posts.

EFFECT: higher safety of navigation in ice.

1 dwg

FIELD: transport.

SUBSTANCE: proposed vessel comprise hull with fore and aft, power plat to melt the ice aboard the vessel, at least two detachable fuel tanks for said power plant. Vessel fore has the chamber to be filled with collected ice. For this, ice loading opening is made at vessel fore. Opening lower part is arranged kevel to vessel waterline and gas the ramp skewed downward. Vessel is provide with at least one device for ice melting arranged in said compartment equipped with water discharge system.

EFFECT: higher efficiency of ice removal, lower costs.

23 cl, 7 dwg

FIELD: construction.

SUBSTANCE: method includes actions to damage ice cover of a river and to erect a water barrier. The ice cover of the river is damaged by multiple parallel through slits 8. The water barrier 1 is erected in the form of an ice dam on a potentially flooded coast 5. The dam is built from ice blocks received as a result of sawing works on the river. The height of the dam must exceed the maximum level of the suggested water rise.

EFFECT: method makes it possible to speed up passage of floor waters during spring high water, to reduce economic damage from floods and to increase reliability of public and territories protection.

2 cl, 2 dwg

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering, namely to the protection of industrial facilities, lines of transportation, communication, various constructions against the harmful effects of water, and can be used to break the ice cover on rivers and water reservoirs. Method involves drilling of holes in the ice cover and laying of supply pipelines in them with subsequent destruction of the ice cover. Destruction of the ice cover is carried out via hydraulic fracturing by unregelating liquid, supplied under pressure into the previously pressure-sealed areas of these holes. Security for people during destruction of the ice cover is provided due to the possibility of its destruction from a safe distance, as well as safety improving for the engineering constructions and environmental safety.

EFFECT: increased efficiency of the method due to the possibility of destruction of the ice cover into pieces of specified sizes in case of stratified break.

3 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to hydrology, in particular to regulation of ice conditions of rivers, namely to technology of works on elimination of ice jams on rivers, and is aimed at the prevention of jam-related floods. The device is a catamaran, in the hold of one of hulls of which a diesel engine is installed, and in another a generator with an accumulator battery is installed. The device has a screw shaft for the ice pre-capturing, a screw shaft with stiffeners for final braking of the ice, a transfer change gear for the rotation of the screw shaft with stiffeners. On the shaft with stiffeners a gear wheel for the rotation of the screw shaft of the ice pre-capturing through a cargo chain is installed. The shaft of the ice pre-capturing rotates and moves up and down along the bracket groove. Rise and lowering of the screw shaft of the ice pre-capturing is performed by a hydraulic piston. The front part of the catamaran is fitted with a tank with holes for passing of water and collecting the ice pieces after preliminary passing of the river ice breaker. The similar tank and the screw shaft are installed aft the catamaran. Propulsion engines are installed in the engine room under the pilot cabin between the catamaran hulls. For the adjustment of the length of the screw shaft the brackets on racks are installed.

EFFECT: prevention of destructive floods in jam regions is provided.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to preventive jobs aimed at prevention of ice jams formation at river section and can be used for softening of ice cover at areas of underwater communications. Ice cover cleaned of snow is blacked to arranged ice bulky lens. The latter focus sun rays at blacked surface and inside ice cover.

EFFECT: accelerated destruction.

2 cl

FIELD: transport.

SUBSTANCE: shipboard icebreaking device is proposed which device contains axe pivotally mounted on horizontal axis in fore bottom vessel part so that while the ship is underway the axe is under ice and directed forward. The axe is forced into vibration using vertical shaft windlass with bell crank mounted on its upper flange which bell crank transmits motion to axe by means of chain pivotally connected with the bell crank and passed through block installed on lever at fore end near stempost. The chain is attached to the axe. Herewith, the chain is additional icebreaking element as saw because it performs reciprocating movement. To adjust initial height of the axe depending on ice cover thickness and draft the lever with block and hydraulic actuator, as well as turnbuckle mounted between chain links are provided. Axe can be fixed in upper nonoperational position.

EFFECT: simplified design, improved reliability and efficiency of shipboard icebreaking device.

2 cl, 7 dwg

FIELD: transport.

SUBSTANCE: this method relates to setting of underwater vessels overboard the ship in ice conditions. Strong air-inflatable tanks are used to make a bunch of required length to be secured at two bars aboard the ship. Produced structure is lowered in water to inflate said tanks and to push broken ice off the board. Note here that inflated structure draft exceeds the ice draft owing to deadweight.

EFFECT: higher safety, accelerated handling of submarines and other underwater equipment.

FIELD: process engineering.

SUBSTANCE: invention relates to ice destruction for making passages in ice fields. Proposed process is based on two effects to be brought on ice fields: irradiation with high-power laser radiation and straining of ice by ice breaker hull. Laser units are installed at ice breaker with their focusing devices are directed downward, onto ice cover. To make the cutouts in ice field it is irradiated starting from the field edge and proceeded in lines parallel with ice breaker heading. The destruction of ice cover is performed in said lines of cutouts at strain developed by ice breaker hull in motion.

EFFECT: accelerated process, lower strain at ice breaker hull.

2 cl, 8 dwg

FIELD: heating.

SUBSTANCE: invention proposes an ice melting device for the passage of a ship, which includes the following: a boiler configured so that a heat carrier can be heated; a high temperature pump configured so that the heated heat carrier can be transferred; a heating casing having a possibility of being heated by means of the heat carrier transferred by means of the high temperature pump and connected to the fore compartment of the ship; and a hot gas jet generation unit having a possibility of being located in front of the heating casing and ejected by an air jet heated by means of the heat carrier. Besides, versions of the device design using a hot cutter unit are considered.

EFFECT: improving the efficiency and simplifying the design of the ice melting device.

14 cl, 6 dwg

FIELD: blasting operations.

SUBSTANCE: explosive charges are placed under the ice and undermined in sequence with the time interval equal to the time of passage of flexural-gravitation wave from the place of undermining the previous to the place of undermining the subsequent charges. Above the ice cover the explosive charges are placed and undermined simultaneously with undermining the charges placed under the ice cover. At that, before the placement of the explosive charges the speed and direction of wind, undercurrents and drifts of ice fields is measured, the thickness of ice is determined. The explosive charges are placed with the formation of the direction of propagation of the blast wave in the opposite directions from the location of marine object of economic activity. The watercraft influencing the ice cover is equipped with a source of gas and a system of its supply with a collector and comprises a cable-rope, the other end of which is connected through the electromagnetic breaker with the ballast. The charges are placed in watertight casings made in the form of a ball. The cable-rope is connected to the balls by the fuse lighter. The charges are made in the form of the volume-detonating mixture.

EFFECT: increase in reliability of protection of marine objects of economic activity.

2 cl, 2 dwg

FIELD: transport.

SUBSTANCE: proposed method comprises creation of thrust with the help of ship propulsor to act upon the ice bulk along with creation of rarefaction in water by its intake and ejection from the area in shift aft in direction of ship motion. Note here that water ejection is performed by ship propulsor or by ship active control means.

EFFECT: power saving in navigation in ice.

Ice breaker aft // 2551638

FIELD: transport.

SUBSTANCE: ice breaker aft comprises ice breaking ledge rigidly secured at stem-post in the ship centre line and arranged behind rudder blade along ship motion. Top end of rudder blade turn axle extends thorough stem-post while bottom end is secured at the heel rigidly secured with keel. Said rudder blade turn axle is arranged on the side of ice breaking ledge side, said ledge being rigidly coupled by vertical prop with appropriate end of said heel to make a vertical protective frame around rudder propeller unit. Vertical prop rear edge is sharpened. Ice baffle plates are rigidly secured on both sides of stem-post at acute angle to horizontal plane at ship hull underwater surface, free ends of said plates are lowered under secured edges by at least to the level above below screw top edge. Distance from rudder blade turn axle to its rear edge does not exceed the radius of curvature described by said edge.

EFFECT: better controllability in reverse motion, higher reliability of rudder propeller protection.

3 cl, 3 dwg

FIELD: transport engineering.

SUBSTANCE: method is implemented by creation ship trim by the stern, and buoyancy force due to drainage of the ballast tanks. At that the ship is provided with additional buoyancy force that is periodically changed with frequency equal to natural frequency of the resonance bending-gravitational waves generated in ice cover by pulse load.

EFFECT: increased efficiency of ice destruction by submarine.

4 dwg

FIELD: construction.

SUBSTANCE: device is proposed to damage ice cover comprising an underwater vessel equipped with ballast cisterns, due to drying of which a trim is created to a stern and buoyancy force. In the bow there is a container with a reservoir in it, walls of which are made of corrugated elastic material. Inner sides of the container are equipped with remotely controlled relief valves, and the reservoir itself with the help of a flexible hose is connected with a source of compressed air, is attached to the bottom of the container with the help of slings, and being straightened by supplied air it acquires toroid shape.

EFFECT: increased efficiency of ice cover damage by an underwater vessel.

5 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to ice breaker vessels and pusher tug to be operated in shallow iced areas. Ice breaker comprises hull with sledge-type stern counter and steering mover complex arranged in the latter and including two paddle propulsors arranged on sides as well as two whirligig steering columns provided with two propeller screws and arranged in symmetry about the ice breaker centre line. Stern counter at structural waterline area features ice breaking shape with expressed wedge-shape with taper angle in waterline making 90-180 degrees and with surface inclined to vertical , at least 30 degrees. Ice-protection nose is formed in stern counter perimeter, features wedge-like cross-section and does not extend beyond ship hull. Said nose extends in fore direction beyond the screw propeller disc plane by magnitude not exceeding two diameters of said propulsors. This nose features height whereat its bottom edge at stern is spaced from rotational axes of screw propellers by at least half the radius of said propellers.

EFFECT: better manoeuvrability in ice.

3 dwg

FIELD: transport.

SUBSTANCE: to provide extra compressed air pressure for air cushion vehicle air with impeller running as compressor high-pressure gas-dynamic jet is created to escape from impeller nozzle. Said jet is forced into bottom supply channel composed in plan of confuser with neck-like nozzle and directed between vertical sidewalls. Confuser-like channel with nozzle extra high-pressure gas-dynamic jet is generated by moving vertical flaps secured to confuser vertical walls.

EFFECT: higher stability, reduced leaks from under the bottom, efficient operation thanks to maximum application of high-pressure compressed air at supply channel outlet.

4 cl, 4 dwg

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