RussianPatents.com
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Composite steel-concrete slab with external sheet reinforcement, preferably for ice belt of marine stationary ice-resistance platform. RU patent 2464380. |
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FIELD: construction. SUBSTANCE: composite steel-concrete slab with external sheet reinforcement, preferably for an ice belt of a marine stationary ice-resistant platform contains concrete coated at two opposite sides by external steel sheets. External steel sheets are connected between each other by through transverse joints from sheet reinforcement. Some transverse links making not more than 80% are made of U-shaped reinforcement rods, joined to each other in pairs according to the type of loop joints. Ends of rods are fixed to external steel sheets. EFFECT: invention reduces labour inputs for operations of assembly and disassembly of a slab, eliminates concrete grinding into relatively small-sized parts and increases reliability of a slab during long-term operation under conditions of arctic seas. 3 dwg
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Shell of large diametre with support ring / 2463408 Shell of large diametre comprises a cylindrical shell ring arranged as capable of placement on an earth foundation and equipped with a support element. The support element is arranged in the form of at least one support ring rigidly fixed with the external surface of the shell above its lower edge. The plane of the support ring is perpendicular to the longitudinal axis of the shell. The support ring is fixed with stiffening ribs, preferably gussets, perpendicular edges of which are rigidly fixed with the shell surface and the appropriate side of the support ring. The support ring width is determined from the expression m=F/(2π R σ0), where m - support ring width, m; F - vertical rated load onto the earth foundation transferred by the shell, kg; R - external radius of the cylindrical shell; σ0 - bearing capacity of the foundation material, kg/m2. The distance from the support ring to the lower edge of the cylindrical shell depends on properties of soils of the foundation and is determined by the ratio 1/10 H÷1/40 H, where H - height of the shell taken within the limits from 1 to 20 m. The cylindrical shell, support ring and stiffening ribs are made of metal. Stiffening ribs may be arranged both from the side of ring surface, the opposite surface perceiving the earth back pressure and at both sides of the support ring. |
Shoe for support pillar of self-lifting platform / 2459905 Shoe comprises a body and a unit of shoe attachment to a support pillar. It has zero or positive buoyancy and is arranged as capable of changing zero or positive buoyancy to buoyancy of a low negative value. The shoe body comprises a hole for stretching of a support pillar, besides, the specified hole is arranged in the centre of the shoe and comprises vertical guide slots for interaction with racks of the support pillar. The unit of shoe attachment to the support pillar comprises two stops, every of which is equipped with a guide sleeve placed in a body, a sliding block installed in the guide sleeve, and a manual drive to move the block in the guide sleeve. |
Lifting-and-shifting ship / 2459739 Invention relates to ship building. Proposed ship comprises supports, platform with decks, support fasteners, and powerhelm unit. Supports are made up of sections secured in fasteners in sailing position. Fasteners are arranged at angles of decks. Said decks house platform drives, living and storage compartments, engine compartment, and support shafts. Platform may dive. Platform top deck is provided with mounting seats of various equipment. |
System and method of mounting hydroelectric turbine / 2459110 Proposed system comprises foundation 12, hydroelectric turbine 10 to rest on said foundation 12, and afloat sea ship 14 that allows detachment of said foundation. Ship 1 allows detachment of foundation 12 and its lowering, and/or lifting to position right under the ship, and its attachment to ship. Foundation 12 comprises support 32 to pass upward through ship 14 when foundation 14 is attached to ship from below. Ship 14 has opening 30 for foundation 32 to pass through when foundation 12 is mounted under ship 14 to allow turbine 10 mounted on support 32 to pass there through. |
Method to transport and position fixed offshore platform and device to transport and position fixed offshore platform using specified method / 2459034 Method to transport and position a fixed offshore platform, having a support part from support blocks and an upper structure, includes connection of support blocks between each other prior to transportation with a transport assembly frame, towing, positioning and setting of support blocks of the support part connected with the transport assembly frame as a single structure. The length of the transport assembly frame is selected as not less than the distance between support blocks required for the specified transport assembly barge with the platform upper structure to enter. Then the specified support blocks of the support part are fixed, and the transport assembly frame is dismantled. Afterwards the transport assembly barge is entered with the platform upper structure installed in it into the support part opening, the upper structure is moved to the support part, and the transport assembly barge is removed from the support base opening. The device to transport and position the fixed offshore platform having a support part from support blocks and an upper structure comprises a floating facility to tow the support part and a transport assembly barge to transport the upper structure. The device is equipped with a transport assembly frame mounted as capable of rigid connection of support blocks to each other for transportation, further positioning and setting of support blocks of the support part connected by the transport assembly frame as a single structure. The length of the transport assembly frame is accepted as not less than the distance between support blocks required for the specified transport assembly barge with the platform upper structure to enter. |
Method to build, transport and assemble superstructure on support part of marine oil and gas production facility in shallow waters / 2455421 Superstructure is built on a building slip in a dock on a support deck installed on side walls of the dock. A transport barge that has taken the ballast is introduced into the dock under the superstructure, and the superstructure is installed by means of ballast pumping away from the barge on its deck with its subsequent transportation to a marine oil and gas field. A hydraulic engineering pocket is arranged in place of installation of a support part of a marine oil and gas production facility on the marine oil and gas field. Length, width and depth of the latter make it possible to lead the transport barge to the support part, to install the superstructure onto the support part after taking the ballast by the transport barge, and also to move the transport barge away from the marine oil and gas field after pumping of ballast from it. |
Method to build, transport and assemble superstructure on support part of marine oil and gas production facility in shallow waters / 2455421 Superstructure is built on a building slip in a dock on a support deck installed on side walls of the dock. A transport barge that has taken the ballast is introduced into the dock under the superstructure, and the superstructure is installed by means of ballast pumping away from the barge on its deck with its subsequent transportation to a marine oil and gas field. A hydraulic engineering pocket is arranged in place of installation of a support part of a marine oil and gas production facility on the marine oil and gas field. Length, width and depth of the latter make it possible to lead the transport barge to the support part, to install the superstructure onto the support part after taking the ballast by the transport barge, and also to move the transport barge away from the marine oil and gas field after pumping of ballast from it. |
Method to install platform support block / 2446250 Method to install a platform support block provides for support block transportation, its submersion to the sea bottom and installation onto soil. Ballast reservoirs are used during transportation. Ballast reservoirs are inner cavities of structure elements. During installation the first installation unit is ballasted down. The shaft is put into vertical position. Its eyes are brought to the level above sea surface. Spacers are ballasted to ensure hinged connection of their eyes with eyes of the vertical shaft. The ballast is pumped from the support ring pontoons and/or radial spacers and/or vertical shaft. Spacer ends are put in contact with the support ring due to slight surfacing up of the first installation unit. Spacers are rigidly fixed. Assembly pontoons are ballasted. Its lowering to the prepared bottom section is provided. |
Ice-resistant support block of marine engineering facility / 2446249 Ice-resistant support block of a marine engineering facility comprises a cylindrical shaft, a support unit and supporting braces. The shaft is made as hollow. The shaft is hingedly connected to supporting braces. The support unit comprises a support ring. The support ring is formed by at least three rectilinear pontoons. Pontoons are rigidly connected by their ends. The support ring is rigidly fixed to the cylindrical shaft by hollow radial spacers. Supporting braces are rigidly connected to the support ring by lower ends. Pontoons of the support ring, radial spacers, a cylindrical shaft and hollow supporting braces are made as capable of their floatability adjustment from positive to negative one. |
Fpso platform / 2441129 Proposed platform comprises driven drilling outfit, platform deck, lifting crane, auxiliary unit (tender plant), drilling tube, well shaft, well foundation, underwater equipment actuating fluid and gas flow rate devices, manifolds, underwater flowlines, locks, and underwater control system. Drilling tube is equipped with protective envelopment to be locked on platform deck and at well foundation which is made up of chemically stable and water resistant light-protection and load-bearing layers and is provided with hoses furnished with inlet valves arranged along the length of said protective envelopment and connected with mobile elastic reservoirs. Note here that remote-control in-tube pig is arranged in drilling tube top section, in interceptor. |
Method of making channels in ice fields and ice breaking appliance to this end / 2457977 Invention relates to ice-breaker fleet. Proposed method comprises extending two bars with electrodes along ice breaker sides to be heated by electric current generated aboard the ice breaker, displacing ice breaker to distance equal to bar length, melting two cutouts in ice bulk by aforesaid electrodes, breaking ice loosened by said cutouts and repeating aforesaid cycle. Note here that plate-like sharpened-front electrodes penetrate into ice through part of its thickness. Cutters are fitted into cutouts made by electrodes made up of cutting head focused by nozzle through which hydroabrasive jet if forced by ship superhigh-pressure pump. Ice breaker add-on device comprises extending bars with electrodes and cutters. Extending bars are arranged on rotary device to displace in 0-90 degree-sector on every side of ice breaker. Cutters are made up of cutting head focused by nozzle. |
Method to break ice cover / 2455189 Invention relates to breaking an ice cover with the help of an explosion. The method to break an ice cover is carried out by creating a gas cavity with high pressure under the lower ice edge. The cavity is created by firing at an ice cover from a weapon with the main hollow-charge shell with tandem arrangement of two composite hollow-charge shells capable of alternation ignition with a time interval. It is reasonable to install the weapon barrel at the angle providing for vertical fall of the shell on ice. |
Ice cover destruction method / 2454503 Method involves supply of gas-air mixture under lower surface of ice cover, and its explosion. At that, gas-air mixture is supplied to a groove made from lower surface of ice cover. Besides, a float with detonator with wireless control is installed in the above groove. |
Method of driving ice away from mooring facilities / 2453656 Proposed method comprises mounting pump on berth to created jet flows directed from mooring facilities toward harborage. For this, manifold with branch pipes whereto water is forced by pump is arranged on wharf below minimum navigation water level. Pump suction pipeline is downed into pit made on harborage bottom. Dredger with pressure pipeline connected with manifold may be used as aforesaid pump. |
Method to weaken monolith of river ice cover and device for its realisation / 2452813 Method consists in installation of modules in an ice cover by means of their placement prior to river freezing, with subsequent freezing-in of modules into ice as the river freezes. Besides, the module dome is installed above the water surface, and the lower end of the module is below the level of the expected ice cover. The module is filled with air via an air duct attached to a tight dome of a module, at the open mechanical valve, afterwards the valve is closed. At the same time, whenever a lane is produced under influence of climatic factors, by opening the mechanical valve, air is released from the module with filling of its cavity with water from lower layers. The method is realised by means of a module comprising a vessel installed on bottom supports with arrangement of its ends outside the borders of the ice monolith, and a tight dome. An air duct with a mechanical valve is connected to a dome. The module is arranged in the form of a nozzle with a downward expansion. |
Method to destroy ice cover / 2452812 Method includes installation of explosive charges under ice and their by-turn blasting with a time interval equal to the time of flexure-gravity wave travelling from an area of blasting of the previous charge to an area of blasting of the next charge. Explosive charges are installed above an ice cover and blasted simultaneously with blasting of charges installed under the ice cover. Prior to installation of explosive charges wind speed and direction, underwater currents and ice field drifts are measured, ice thickness is identified. Explosive charges are installed to generate a direction of impact wave propagation to opposite sides from an area of location of a marine facility of business operations. |
Device to break ice during ice drifting / 2445421 Device comprises a support site, supply gas lines, a spark gap contacting with a cable. On the support site there is a tubular rod fixed hingedly as connected to gas lines and equipped with a return mechanism, a hook of a position fixator and a spark gap fixed at the rod's end. The support site is equipped with a protective fairing, anchors and a grip of the position fixator made in the form of a rigid bracket and an elastic latch equipped with tension rope, fixed on the support site. At the same time the tubular rod is made in the form of a packet of pipes connected with supply gas lines via flexible nozzles, an air header and a flammable gas header, and at the outlet of the pipes packet the latter are equipped with check valves. The packet of pipes is made of pipes with identical diameter fixed with braces, at the same time three pipes are for flammable gas, and two - for air. The return mechanism is made in the form of two twist springs with hooks fixed on the brace and on the support site. The spark gap is made as an elastic steel ruler with connectors fixed in perforations of the latter having electrodes of the supply cable. |
Method to eliminate ice clogging that closes river from one coast to opposite one and raising water level in river / 2440458 Method includes filling an explosive substance under ice clogging on the river bottom in the specified area and simultaneous explosion of the entire explosive carried out at the specified level of water in front of the clogging and in the volume sufficient to develop disturbance that changes into an elastic wave in water that impacts the clogging and then puts the clogging first into oscillating motion and then into the motion along the river. At the start of the work a section of the coast is identified, which at least near the head part of the clogging has a coastal depth that is deeper than the coastal depth near the head part at the opposite coast. Filling of the explosive substance is carried out at the specified depth along the specified section of the coastal line of this identified section, afterwards the entire explosive substance is simultaneously exploded. Simultaneously with putting the clogging into oscillating motion, the head part of the clogging is exposed to firing practice with live shells. |
Device to erect protection of marine engineering structure supports / 2431016 Device comprises a protective unit in the form of a banding structure that embraces a support of a marine engineering structure. The space between the support and the banding structure wall is filled with liquid that has low freezing temperature. The device is also equipped with a refrigerating plant, pipes of which are arranged in the space between the support and the wall of the banding structure. The banding structure is installed in the zone of the external ice action of alternating loads at supports. |
Device for protecting lane of dredges and dredge ships against freezing / 2424399 Device refers to mining industry, oceanology and other branches of national economy, which deals with execution of works during winter period, and can be used for protection of the lane against freezing. Device consists of heat insulating coating located on water surface of the lane. Heat insulating coating is made in the form of cylinders of similar length, which have the possibility of rotation around its axis. Cylinders with larger diameter are located in upper row, and those with smaller diameter are located in lower row. Axes of cylinders of lower and upper rows are hinged to each other by means of rods. Cylinders of upper row are made by means of alternation next but one with weighing of axes. |
Method of producing prestressed concrete structure for ship hull / 2337035 Method of producing a pre-stressed concrete structure for the ship hull consists in creating stress in armoring by laying it in the form, filling the said form with melted polymer-concrete, heating the armoring to the melting point of the said polymer-concrete, the armoring being arranged on the supports. The armoring cooled down, its clamps are removed to result in pre-stressed structure for the ship hull. The said polymer-concrete can represent a mix of 20% by weight of sulfur and 80% by weight of inert filler, e.g. crushed dolomite rock. |
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