352 results about "Bilge" patented technology

A system and method for treating and removing hydrocarbon and other contaminants in bilge and ballast water, utilizing a multiple progressive process that chemically and electrically treats-and removes contaminants. Wastewater, received by a sump, is transmitted to a holding tank and treated, over a period of time while-influent wastewater continues off loading. The wastewater is pumped to an oil/water separator tank that decants free-floating oil from the wastewater to an oil retention tank. The wastewater then undergoes an electrocoagulation process where emulsions are broken and compounds that further aid treatment are created. The treated water flows to a retention/separation tank where contaminant particles coalesce and separate. Water is decanted and transferred to a clean water holding tank through an ozone injection system and an activated carbon filter. Treated water is recirculated until it exits the system meeting discharge limits for organics and metals allowing release into the environment.

The invention is a pump system which is comprised of a box with a plurality of openings and inside of which is an electrically powered pump, a float switch and a battery. These components comprise one pumping unit. This unit is designed to rest at the bottom interior of a boat, or the bilge area, for the purpose of pumping water out of the boat automatically when the water reaches a predetermined level in the boat. The pump unit is portable and self contained with no additional power source or wiring needed.

A vibrational damper reduces torsional vibration within a crankshaft of a marine engine. The vibrational damper is located on an end of the crankshaft opposite of the flywheel and includes an inertia ring that adds additional mass to this opposite end. In addition, the vibrational damper includes an elastic member that suspends the inertia ring about the crankshaft. The elastic member effectively dampens torsional vibrations. The torsional damper desirably is cooled by an air flow so as to maintain it's dampening efficiency. A ventilation duct, which is positioned directly above the vibrational damper, supplies the cooling air. Cooling is enhanced by locating a bilge system inlet below and slightly behind the vibrational damper. An air flow stream occurs between the duct and the bilge inlet and across the torsional damper to cool the torsional damper.

The invention relates to a boat type of a deep V skimming boat, which comprises a boat body. The transverse directions of a boat bottom and the boat body are V-shaped. The boat type of the deep V skimming boat is characterized in that an oblique ascending angle beta B of left and right sides of the waist of the boat bottom is 20 to 25 degrees, a transverse oblique ascending angle beta A of the left and right sides of the stern of the boat bottom is 10 to 15 degrees, and the oblique ascending angles of the left and right sides from the waist of the boat bottom to the stern of the boat bottom are in smooth transition and are reduced gradually. Built-in horizontal bilge plates are arranged at the outside break angles of the left and right sides of the boat bottom. The boat type of the deep V skimming boat has the following advantages that: 1, on the premise of volume Fourier coefficient, not only the sailing resistance is reduced, the sailing speed is improved or the host power is reduced, but also the seakeeping property is obviously improved; 2, the longitudinal sailing inclination angle during skimming can be reduced, and the problems of over-large resistance crest, driving sight improvement and the like are solved; and 3, when the conventional propellers are adopted for propelling, the axis included angle is reduced, the problem of larger propeller thrust loss is solved, and the propelling efficiency of the propeller is improved.

The invention relates to large-specification and high-strength D40 hot-rolled flat-bulb steel for ships and a production process for the hot-rolled flat-bulb steel, and belongs to the technical field of marine structural steel. The large specification of the large-specification and high-strength hot-rolled flat-bulb steel is No. 40 and over No.40. The steel comprises the following chemical ingredients in percentage by weight: 0.08 to 0.15 percent of C, 0.10 to 0.50 percent of Si, 1.15 to 1.75 percent of Mn, less than or equal to 0.020 percent of S, less than or equal to 0.020 percent of P, 0.08 to 0.15 percent of V, 0.10 to 0.50 percent of Ni, 0.01 to 0.03 percent of Ti, 0.001 to 0.01 percent of Mg, 0.001 to 0.01 percent of Ca, 0.001 to 0.01 percent of O, 0.016 to 0.025 percent of N and the balance of Fe and inevitable impurities, wherein Mn/C is more than or equal to 14.0, Ni/Mn is more than or equal to 0.15, and (Mg+Ca)/O is more than or equal to 1.0. The production process comprises the following steps of: feeding a vanadium nitrogen alloy wire with the diameter of 13 millimeters and a Mg-Ca alloy wire with the diameter of 10 millimeters into molten steel after vacuum is finished, and blowing argon and stirring at the bottom; and in the hot rolling process, heating a low-temperature blank, performing final rolling for large deformation and cooling after rolling. The large-specification and high-strength D40 hot-rolled flat-bulb steel has the advantages that: the requirements of yield strength and impact toughness at the low temperature of -40 DEG C can be met, the flat-bulb steel is used for stiffeners at bilge keels of large-scale ships, and the rigidity of the ships and the safety coefficients of the ships used at the low temperature are improved obviously under the condition that the weight of the ships is not improved.

The invention discloses an abysmal sea communication relay buoy which comprises a shell body. A wall-collision device and an antenna are symmetrically arranged at one end of the shell body and a cable guide tube is connected with the other end of the shell body. A conductance temperature depth (CTD) sensor, an acoustic transponder main machine, a pressure resistant tank and an acoustic transponder transducer are arranged sequentially in the shell body from top to bottom. Upper shake-reducing boards are symmetrically arranged at the periphery of the middle portion of the shell body. Lower shake-reducing boards are further symmetrically arranged at the periphery of the bilge portion of the shell body. According to the abysmal sea communication relay buoy, a shell is designed in a water-drop-shaped solid of revolution with the size gradually increased from top to bottom, devices with large weight are arranged at the bottom of the shell, so that in serious sea environment, the abysmal sea communication relay buoy is high in moving stability, capable of maintaining an efficient and long working state, compact in structure and convenient to process. The cable guide tube is arranged at the bottom of the shell body, a cable used for connection can be arranged in the cable guide tube, and therefore the abysmal sea communication relay buoy is rapid and convenient to arrange and recycle and high in work efficiency.

The invention provides a device and a method for integrally treating oily sewage at the bilge of a ship. Oily sewage at the bilge enters into a regulating pool by passing through a collection pipeline and a grid and then enters into a flocculation reaction pool, coagulant polymerization and coagulant aids are respectively fed into the flocculation reaction pool by a reagent feeder, an agitator is arranged on the flocculation reaction pool, the oily sewage enters into a gravity type oil-water separator after being flocculated, an oil scraper is arranged on the upper part of the gravity type oil-water separator, an oblique plate structure is arranged on the lower part, the oily sewage at the bottom is collected by a sewage hopper and discharged by a blowdown pipe controlled by a blowdown valve, the oily sewage to be treated after being subjected to separation action of the gravity type oil-water separator enters into a membrane separation unit, ultrafiltrated concentrated water is discharged by a drain pipe, and a backwashing device is arranged on the membrane separation unit. By using the device and the method, the volume of a sewage storage cabinet in the ship can be saved, consumption of raw materials can also be reduced, recovery of oil resources and continuous use of treated sewage are realized, and the purposes of saving energy and reducing emission are achieved.

A system for simplifying launching and storage procedures for a recreational boat comprising a radio receiver/controller adapted to be permanently installed onboard the boat, a hand-held radio transmitter for sending a plurality of different signals to the receiver/controller, the receiver/controller including a plurality of separate control circuits, said circuits being connectable to a plurality of power-operated locks on the boat and a set of other electrically operated devices on the boat such as electric lights, an engine tilt actuator, and a bilge blower, the receiver/controller being arranged to be powered by an electrical power circuit serving electrically operated devices on the boat separate from those controlled by the transmitter and receiver/controller, the locks being integrated with manually operated latches and having a manual key override feature.

The process of manufacturing outfitting for ship engine room bottom floor includes the following steps: drawing midship line, rib site line, longitudinal line and inner bottom plate edge line in the internal field with the longitudinal line as datum, and setting height line on wall or upright to determine the grille height and base height; erecting uprights for the grille frame, splicing grille plane and welding to the uprights; locating the apparatus base and maintenance platform on the grille; installing apparatus on the base and maintenance platform; mounting pipe supports, pipes, valves and accessories; and hoisting the installed outfitting onto the ship. The process can shorten the operation period in dock, raise operation efficiency, improve operation condition, raise safety and lower ship building cost.

The invention provides a method for treatment of oily sewage at the bottom of a bilge of a vessel and a method for preparation of magnetic activated carbon for decontamination of the oily sewage. The method for treatment of oily sewage at the bottom of the bilge of the vessel includes steps of feeding magnetic activated carbon into a mixing tank, filtering and retaining suspended particles in sewage at the bottom of the bilge and the magnetic powdered activated carbon with partial oil adsorbed by means of a high-gradient magnetic filter, feeding magnetic powdered activated carbon into an ultra-filtration membrane reaction tank, and deoiling by means of the magnetic powdered activated carbon and an ultra-filtration membrane. The method for preparation of magnetic activated carbon includes the steps of soaking powdered activated carbon into clean water for more than twenty-four hours, taking out the powdered activated carbon and drying the powdered activated carbon for two hours at a temperature higher than 105 DEG C, ultrasonically dispersing the dried powdered activated carbon with ferroferric oxide at the ambient temperature, and filtering by means of a filter screen and drying the filtered activated carbon for more than two hours at a temperature higher than 105 DEG C. More loosened mud cake layers are formed on the surface of the ultra-filtration membrane, filterability is greatly improved, membrane flux is improved, and membrane pollution can be effectively prevented.

The present invention relates to a method for purification of bilge and sludge water on a ship, especially at sea, using excess heat from the ship's engine(s) to a level of oil contamination of less than 15 ppm. The invention also relates to a plant for carrying out the method, and a vessel including such plant, as well as the use of the method and plant.

The invention discloses a method for positioning butt joint of two total sections in large dock shipbuilding. The method comprises the following steps: firstly, measuring the following data of the butt joint surface of a first total section: a molded breadth or molded depth measuring point (P1), a deck centre measuring point (P4), each measuring point (P3) of an outside plate of a bilge, centre measuring points (P5) of an inner bottom plate and an outer bottom plate, and points (P2) for measuring heights from each break angle of an inner shell plate to the centre and a base line; and secondly, feeding the data back to a second total section so as to provide positioning reference data for the subsection positioning at the close seam when subsequently positioning the second total section. In the method, in order to reduce cutting and repairing work, a set of positioning process requirements on the subsection at butt point close seam of the two total sections in the large dock shipbuilding is provided, which realizes the butt joint of the two total sections effectively, improves work efficiency, and reduces working cost and working difficulty.

The invention relates to a high-speed rounded bilge type boat utilizing an air cavity to reduce resistance. The high-speed bilge type boat of the invention comprises a boat body, a propulsion system and a gas supply system arranged in the boat body, and is characterized in that the bottom surface of the boat body is provided with an inward concave air cavity; the air cavity is composed of two arcboard lateral fins; the width of the air cavity gradually increases from the head part to the tail part of the boat body, the front part of the air cavity is provided with a head platform, and the rear part of the air cavity is provided with a wedge bulge; and an air inlet used in the gas supply system to supply gas to the air cavity is arranged at the fault-step position of the head platform. The high-speed rounded bilge type boat of the invention is provided with the reasonable air cavity structure, the head platform is arranged at the front part of the air cavity, and the wedge bulge is arranged at the rear part of the air cavity, thus ensuring the stability of inlayer air in the air cavity and the resistance reducing function of the air cavity, being capable of effectively reducing frictional resistance in the sailing process of the boat body, saving fuel materials and effectively improving the propulsive efficiency.

The invention discloses a sea chest device suitable for an arctic navigation vessel of which the structure can be arranged at a proper position from broadside bilge to the center line of the bottom of the vessel. The sea chest device comprises an ice storing tank, and an ice and water separating structure for separating ice from seawater, wherein filters are arranged between the ice storing tank and a seawater partition; the seawater partition is connected with a suction of a cooling seawater pump; the seawater partition is provided with a vent pipe; and the vent pipe and a shut off valve are directly connected to the broadside. Before being drained outboard through an outboard drainage pipe, a part of the heated seawater can recurrently flow to the seawater partition and the ice storing tank for melting floating ice. Measures are provided by the seawater partition, the ice storing tank, the broadside valve and the components to prevent freezing. According to the sea chest device disclosed by the invention, trash ice can be separated from the seawater, so that the situation that a sea chest is blocked by the ice, the working of each seawater system is influenced, and a main engine fails and the vessel is suspended, is avoided.

An oil-sorbing filter element for removing oil from an aqueous flow such as the bilge water of a watercraft. The element includes a first stage which is formed of a consolidated permeable mass of a oleophilic polymeric material such as styrenic mid-block copolymer.

The invention discloses a bilge mechanism of a bulk cargo ship and relates to the technical field of shipbuilding, wherein a top side tank and a bottom side tank are connected by a ship side frame, the bottom side tank is connected with a double-layer bilge, the middle part of the double-layer bilge is respectively provided with a plurality of rib plates, an upper stool is arranged on the top side tank, the upper stool is connected with the lower stool by a transverse bulkhead, the bottom of the upper stool is arranged in a bilge way, the top of the lower stool is arranged in a glide path, both sides of the upper and lower stools are respectively provided with a clamping block, and the middle parts of the upper and lower stools are respectively provided with a height detector; the bilge mechanism adopts the fixing rib plate so as to greatly increase bearing capacity of the bilge, the flexibility of the bilge is improved by the movable internal structure and the upper and lower stools and the triangular bottom side tank has the excellent steadiness.

The invention relates to an external-opened retractable bilge keel. A main body structure comprises two parts of a fixed shell structure (2) and a rotary shell structure (1), wherein after being closed, the two parts are in a flat shape; front and tail ends of the main body structure is shaped like a streamline; the fixed shell structure (2) is fixedly connected with a bilge strake (3); the rotary shell structure (1) is connected with the fixed shell structure (2) through a rotating shaft system; and the rotating shaft system is used for opening and closing the shell structure (1). The external-opened retractable bilge keel provided by the invention is advantaged in that the rolling damping of a ship can be increased, the rolling of the ship is effectively reduced and the rolling stability is enhanced.

The invention relates to a pneumatic bilge liquid removal system including an air compressor having inlet and outlet ports pneumatically coupled to a valve system, a collection chamber with the top segment coupled to the valve system, at least one collection tube extending from the bilge to the collection chamber, a discharge tube coupled to the collection chamber, and a control system for the air compressor and valve system. The air compressor pressurizes the collection chamber via the outlet port for a first time interval causing the bilge liquid in the collection chamber to discharge through the discharge tube, and the air compressor creates a negative pressure in the collection chamber via the inlet port for a second time interval causing any the bilge liquid in the bilge to be drawn into and accumulate in the collection chamber via the collection tubes. A bilge liquid removal method is also provided.

The invention provides a sheathing board for closing the seawater inflow hole of the bilge door of a ship, including: a baffle, bolts for fixing rope which are mounted on one or two points on the baffle, fixing bolts, rubber filler, and fixing nuts which are mounted on the fixing bolts, the baffle is provided with elasticity filler, a hole for the fixing bolts penetrating is formed in the middle, a second reinforcing plate which has the same size and shape with the elasticity filler and a hole for the fixing bolts penetrating formed in the middle, an intermediate plate having the same size and shape with the second reinforcing plate and a hole for the fixing bolts penetrating formed in the middle, a first reinforcing plate having the same size and shape with the intermediate plate and a hole for the fixing bolts penetrating formed in the middle, a surface plate having the same size and shape with the first reinforcing plate and a hole for the fixing bolts penetrating formed in the middle, and fixing screw which is mounted on the margin to fix all the materials.

A ship comprises a bilge water sump collecting bilge water and contaminants. A first contaminant separation device is provided comprising a conveyor arrangement with an endless belt comprising adsorbing/absorbing material. The conveyor arrangement has a first portion submergible into the bilge water and contaminants in the bilge water sump, and a second portion being spaced from the first portion and provided with means for releasing adsorbed/absorbed contaminants from the conveyor belt and means for collecting the contaminants released. The conveyor arrangement is further provided with means for driving the endless belt along a moving path defined by guiding means.

The invention discloses a straight wall constant wetted length slideway type round bilge speed boat shape which is characterized in that a boat body comprises two straight wall constant wetted length round bilge lateral bodies in left-right symmetry, slideway tops and slideways, the straight wall constant wetted length round bilge lateral bodies are formed by straight wall contour lines, slideway contour lines, stern cross section lines, stern bottom oblique ascensions, midship cross section lines and midship bottom oblique ascensions. The straight wall constant wetted length slideway type round bilge speed boat shape has the advantages that the wetted length is constant, during sailing, waves and flying foams on the outer side of the boat body are reduced greatly, the waves, flying foams and air flows on the inner side of the boat body flow through the slideways and flow out towards the rear of the boat at high speed, parts of the energy of the waves and flying foams on the inner side of the boat body are recycled by the slideways (equals to wave and foam elimination) and converted into the dynamic lifting force of the boat body along with the air flows, the operability, navigability and seakeeping performance of the boat shape are increased greatly, and the boat shape is applicable to sea conditions 1-2 levels higher than those which traditional speed boats are applicable to. In addition, due to the fact that the wetted length of the boat shape is constant, the performance of the boat shape can be favorably and theoretically analyzed and researched by using length Froude number.

The invention discloses an anti-splash single-hull planing boat which comprises a boat body, a propelling device and a composite stabilizing wing, wherein the composite stabilizing wing is arranged at the bottom of a stem; the composite stabilizing wing comprises a vertical stabilizing wing and a horizontal stabilizing wing; downwardly inclined longitudinal anti-splash bodies are symmetrically arranged on two sides of the boat body from the front bilge part of a boat middle part to a stem bilge part; the widths of the longitudinal anti-splash bodies are gradually narrowed from the front part of the boat middle part to the stem; the head part of the boat body is gradually transitional from a shallow V-shaped cross section with an acute angle between the two side surfaces to the shallow V-shaped cross section with an obtuse angle between two side surfaces of the front part of the boat middle part; and the front part of the boat middle part is gradually transitional from a shallow V-shaped cross section with an obtuse angle between two side surfaces to a horizontal cross section, on which V-shaped edge strips extend downwards from two sides of the bottom of the stem, or an inverted shallow V-shaped cross section with an obtuse angle between two side surfaces. According to the invention, the splashing of lateral water flow of the sliding surface of the boat body can be effectively prevented, so that the rapidness, transverse stability, longitudinal stability, directional stability, seakeeping quality and so on are greatly improved, convenience for mounting propellers with larger diameters is achieved, and the propelling efficiency is increased.