19 results about "Bilge keel" patented technology

The embodiment of the invention discloses a ship bilge keel system and a ship. The bilge keel system comprises a bilge keel cabin, a bilge keel body, a hydraulic automatic control unit, a hydraulic jack set, a connecting toggle plate, a rotating shaft and a sealing limiting unit. The bilge keel cabin is arranged at the joint of a ship bottom plate and a broadside, a bilge keel body is of a triangular prism-shaped structure defined by three rows of coamings and is provided with a first limiting connecting piece and a second limiting connecting piece, and the broadside coaming is in an arc shape along a broadside outer plate and corresponds to an opening of the bilge keel in shape. One side of the side coaming is hinged to a bilge keel opening through a rotary hinge, and the hydraulic automatic control unit can control the hydraulic jack set to stretch out and draw back so as to drive the bilge keel body to rotate along the rotary hinge through the rotary shaft, so that the first limiting connecting piece or the second limiting connecting piece is in matched sealing connection with the sealing limiting unit. The retractable design of the bilge keel is achieved, and the sailing resistance is reduced by recovering the bilge keel.

The invention discloses a ship welding correction method and device, a storage medium and a product. The method comprises the steps that an initial position point of a bilge keel base plate is surveyed on a segmented area according to the segment type of the segmented area; measuring a target backing plate deviation value of the initial position point of the bilge keel backing plate deviating from the segmented frame in the segmented area; correcting the initial position point of the bilge keel base plate according to the target base plate deviation value to obtain a target position point of the bilge keel base plate; if the bilge keel base plate is welded to the segmented area according to the target position point, the actual position point of the bilge keel base plate welded to the segmented area and the actual included angle formed between the thickness face of the web and the upper surface of the bilge keel base plate are detected; and welding correction measures are generated, and the content of the welding correction measures is that the bilge keel base plate is corrected from the actual position point to the target position point, and the web is corrected from the actual included angle to the target included angle. The twice correction mechanism improves the installation precision of the bilge keel assembly position.

The application discloses a ship body and a deep V-shaped corner semi-small water plane catamaran, and belongs to the technical field of ships. The ship body comprises a first diving body, a second diving body, a first anti-rolling bilge keel, a second anti-rolling bilge keel, a first deadwood structure, a second deadwood structure and a V-shaped structure, the bottom longitudinal section shape of the first diving body and the second diving body is a V-shaped structure. The two included angle sides of the V-shaped structure are flat plate lines, the wave making resistance is small, and the ship body is beneficial to rapid navigation; the comprehensive reaction force of the first anti-rolling bilge keel and the second anti-rolling bilge keel will force the ship body to be righted and stand upright, the wind and wave resistance of the ship body is enhanced, and the sea keeping quality, the seaworthiness and the riding comfort of the ship are improved; a propeller tunnel is formed between the bottom of the stern of the ship body and the tail of the deadwood structure, the ship body has the soft beach landing ability during the ebb tide, and the propeller and the rudder blade are protected.

The utility model belongs to the technical field of ship body stabilization devices for ships, and particularly relates to an adjustable ship body stabilization device for ships, which comprises a bilge keel, a first groove is formed in the bilge keel, a motor is fixedly connected to the inner wall of the first groove, and a first rotating shaft is fixedly connected to the output end of the motor. A second chain wheel is fixedly connected to the outer surface of the first rotating shaft, a first bevel gear is fixedly connected to the side wall of the first rotating shaft, a first moving groove is formed in the inner wall of the first groove, a double-thread lead screw is movably installed on the inner wall of the first moving groove, and a second bevel gear is fixedly connected to the end, close to the first bevel gear, of the double-thread lead screw; the outer surface of the double-thread lead screw is in threaded connection with a moving block. The bilge keel is reasonable in structure, the anti-shaking effect of the bilge keel can be adjusted according to the sea storm condition, and ship navigation stability is facilitated.

The invention discloses an installation method of a large LNG ship bilge keel and the large LNG ship bilge keel. The installation method sequentially comprises the steps that a streamline test is conducted on a large LNG ship to obtain a plurality of streamlines; selecting a streamline closest to the center of the bilge in each section as a mounting position of a sectional bilge keel in the section; and installing the subsection bilge keel in each subsection according to the determined streamline. The large LNG ship bilge keel comprises subsection bilge keels distributed on an outer plate of a ship body subsection, the installation position of the subsection bilge keel in each subsection is a streamline closest to the center of a bilge part in the ship body subsection, and the streamline is obtained by conducting a streamline test on a large LNG ship. The accuracy of the installation position of the ship bilge keel in each subsection is guaranteed, the stabilization effect and resistance of the ship bilge keel on the whole large LNG ship are balanced, the ship building efficiency is improved, structural stress concentration of the subsection bilge keel is reduced, and the service life of the large LNG ship bilge keel is prolonged.

The invention discloses a wind turbine damping device with a bilge keel, a bilge keel mounting method and a wind turbine, and relates to the field of wind power generation. Comprising a floating platform and a bilge keel assembly, the bilge keel assembly is arranged along the side wall of the bottom of the floating platform, the bilge keel assembly comprises an obliquely-arranged bilge keel, and the bilge keel is provided with a plurality of water passing holes used for allowing water flow to pass through and forming turbulent vortexes. Due to the fact that the obliquely-arranged bilge keel is fixed to the floating platform and provided with the water passing holes, the obliquely-arranged bilge keel makes contact with water flow more easily, resistance opposite to the rolling direction is generated, rolling of the floating platform in waves is effectively relieved, vibration of the wind turbine is remarkably reduced, and the service life of the wind turbine is prolonged. And the arranged water passing holes can increase turbulence vortex damping to reduce the rolling amplitude, and the friction area between the water passing holes and water flow is increased, so that energy dissipation is enhanced.

The invention relates to the technical field of ship construction, in particular to a ship bilge keel structure. A ship bilge keel structure comprises a ship bilge part and bilge keels arranged on the ship bilge part, the bilge keels comprise bilge keel segments arranged in a segmented mode, every two adjacent bilge keel segments are arranged in a spaced mode, each bilge keel segment is obliquely arranged relative to the horizontal plane, a base plate is fixedly arranged on a curved-surface shell plate, and the base plate is fixedly connected with the ship bilge part. The bilge keel is fixedly arranged on the base plate in a segmented mode. The bilge keels are arranged at intervals in a segmented mode, the stress of the single bilge keel segment can be reduced conveniently, the bilge keels are arranged on the base plates in the segmented mode, the stress area can be increased on the base plates, and stress concentration is reduced; the inclined bilge keel has a water diversion effect; the problems that in the prior art, a bilge keel and a ship bilge need to bear large water pressure loads, so that welding seams are prone to being damaged, or the rigidity of the bilge keel is larger than that of a bilge outer plate, and the hull outer plate structure is prone to being damaged are solved.

A method for measuring the hydrodynamic pressure of a bilge keel on a surface ship includes: 1. Determining the main structure and bilge keel structure of a ship model, with a scale ratio of λ, and determining the positions of n measurement nodes located on the lower surface of the bilge keel; 2. Modeling the ship model from step 1 and comparing the strain at each measurement node with the strain at the lower surface of the bilge keel by applying water pressure, and calculating the strain transfer coefficients C1 to C2 corresponding to the n measurement nodes. n 3. Construct the boat model from step 1, and conduct a water immersion test in the test tank to obtain the water velocities V1 to V at n measurement nodes. n The micro-strain με1~με at n measurement nodes was measured. n 4. Obtain the hydrodynamic pressure P at the measurement node of the ship model. i :P i =με i / C i , i = 1, 2, 3…n; V. Obtain the actual ship hydrodynamic pressure SP at the corresponding measurement node positions of the bilge keel on the actual ship. i And the actual ship's entry speed SV i SP i =λ×P i This allows us to obtain hydrodynamic pressure data for the bilge keel under different working conditions, which can be used to assist in bilge keel design and improve the reliability of the bilge keel structure.

The invention relates to a bilge keel assembly applied to a ship and the ship with the bilge keel assembly. The bilge keel assembly comprises a plurality of bilge keel single bodies, in the extending direction of the bilge keel assembly, the discharge edges of every two adjacent bilge keel single bodies are spaced to form discharge spaces, the bilge keel single bodies are provided with first pressure reduction spaces along the discharge edges, and the first pressure reduction spaces communicate with the discharge spaces. And at least one part of area, close to the first pressure reduction space, in the bilge keel single body is a first deformable area. According to the arrangement, the bilge keel single body comprises the first pressure reduction space communicated with the drainage space, and at least part of the area, close to the first pressure reduction space, in the bilge keel single body is the first deformable area. Therefore, the bilge keel assembly can consider the total area size and the connection reliability of the bilge keel assembly and the hull.

The invention provides an assembling and welding method for a bilge keel base plate butt joint and a ship, and belongs to the technical field of ship welding. Comprising the following steps that a plurality of bilge keel base plates are installed in the length direction of a ship bilge outer plate, and butt joints are formed between grooves of the adjacent bilge keel base plates; a ceramic gasket is inserted between the butt joint and the ship bilge outer plate; a to-be-welded area is arranged on the bilge keel base plate on the two sides of the butt joint in the length direction of the bilge keel base plate, and fillet welds, except the to-be-welded area, between the bilge keel base plate and the ship bilge outer plate are welded; the butt welding seam and the two sides of the butt welding seam are heated, the two sides of the butt welding seam are hammered, the ceramic liner is crushed, and the crushed ceramic liner is removed; welding a cover surface welding seam above the butt welding seam; and fillet welds between the bilge keel base plate of the to-be-welded area and the ship bilge outer plate are welded. By means of the assembling and welding method for the bilge keel base plate butt seam, the welding quality of the bilge keel base plate butt seam is guaranteed, and the ship driving safety is guaranteed.

The utility model relates to a bilge keel assembly applied to a ship and the ship with the bilge keel assembly. The bilge keel assembly comprises a plurality of bilge keel single bodies, in the extending direction of the bilge keel assembly, the discharge edges of every two adjacent bilge keel single bodies are spaced to form discharge spaces, the bilge keel single bodies are provided with first pressure reduction spaces along the discharge edges, and the first pressure reduction spaces communicate with the discharge spaces. And at least one part of area, close to the first pressure reduction space, in the bilge keel single body is a first deformable area. According to the arrangement, the bilge keel single body comprises the first pressure reduction space communicated with the drainage space, and at least part of the area, close to the first pressure reduction space, in the bilge keel single body is the first deformable area. Therefore, the bilge keel assembly can consider the total area size and the connection reliability of the bilge keel assembly and the hull.

The utility model relates to the technical field of ship bottom structures, in particular to a ship bottom of a glass fiber reinforced plastic composite structure. The utility model provides a ship glass fiber reinforced plastic composite structure ship bottom with a rolling retarding structure, which comprises a glass fiber reinforced plastic shell, a ship clamping plate, a fiber plate, a fireproof plate, a keel frame, an auxiliary frame and a mounting cover, the fiberboard is arranged on the inner wall of the glass fiber reinforced plastic shell, the fireproof plate is arranged on the inner wall of the fiberboard, the keel frame is symmetrically arranged on the inner wall of the fireproof plate, the auxiliary frame is symmetrically arranged between the two sides of the keel frame, the middle of the rib frame is connected with the inner bottom of the fireproof plate, and the mounting cover is arranged on the inner rear side of the fireproof plate. When the ship sails, the hydrodynamic damping effect of the ship during rolling can be improved through the bilge keel on the outer side of the glass fiber reinforced plastic shell, and the transverse shaking degree of the ship sailing in waves is effectively reduced.

The present invention provides an oil leakage monitoring device for a substation, comprising a monitor (1), wherein the monitor (1) is used to be placed in a water seal well (9) and / or an accident oil pool (10) and / or a rainwater well (11), wherein the monitor (1) comprises a floating part and a sinking part, wherein a bilge keel (2) is provided on the outer surface of the sinking part, wherein a height adjustment device (3) is provided on the floating part, wherein a conductivity sensor (4) is provided on the height adjustment device (3), wherein the conductivity sensor (4) comprises a probe, wherein the probe is located at the junction of a liquid surface and air, and wherein a weight adjustment device (5) is provided in the sinking part. In addition, the present invention further discloses an accident oil pool structure using the above-mentioned oil leakage monitoring device, wherein the present invention has the advantage that, by using this structure, when the liquid surface floats, the shaking degree of the monitoring device can be reduced.

The composite ship bilge outer plate appendage structure comprises bilge keel flat-bulb steel, a bilge keel outer plate web and appendage structure small assemblage bodies, and the appendage structure small assemblage bodies are arranged at the head, tail and middle strong structure positions of a large segmented assemblage correspondingly; the appendage structure small assemblage comprises a triangular appendage structure plate and a streamline appendage structure panel, one right-angle side of the triangular appendage structure plate is connected with the bilge keel flat-bulb steel in an attached mode, and the other right-angle side of the triangular appendage structure plate is connected with the outer plate in an attached mode. A streamline appendage structure panel is arranged at the bottom of the triangular appendage structure plate, one end of the streamline appendage structure panel is connected with the outer plate, and the other end of the streamline appendage structure panel is connected with bilge keel flat-bulb steel. An appendage structure toggle plate is further arranged on the appendage structure small assemblage in the bow direction of the outer plate. The triangular appendage structure is used for replacing temporary tools, the longitudinal and rib preassembling process is optimized, welding damage and construction risks are remarkably reduced, and the building efficiency and the structural strength are improved.

The bilge keel capable of reducing the turning radius of the ship comprises a bilge keel main body which is formed by connecting double plates at a certain included angle, is arranged at a bilge part of a ship body and forms a cavity with a wedge-shaped section with the ship body; the bilge keel rotating plate is arranged on the bilge keel main body, and one end of the bilge keel rotating plate is hinged to the bilge keel main body; the adjusting mechanism is connected between the bilge keel main body and the bilge keel rotating plate and is used for adjusting the opening angle of the bilge keel rotating plate; the input end of the control system is connected with a sensor installed on the ship body, the sensor monitors the sailing state of the ship in real time, and the output end is connected with the adjusting mechanism. While the seakeeping performance of the ship is improved, the turning radius of the ship can be effectively reduced, and the maneuverability of the ship is improved.

The present application relates to the ship technology field, especially a kind of single-layer board form's bilge keel web lofting method and ship, single-layer board form's bilge keel web lofting method is by using twice projection, first by projection obtains the impact potential of second projection point and the elongated rib distance between adjacent first projection point, then using elongated rib distance carries out secondary projection along the height direction, using impact potential correction data, then obtains the rib position line after bilge keel web unfolding and the outer mouth line after bilge keel web unfolding. By using impact potential to calculate the distance of the normal point on the outer mouth line found in the second projection after elongated rib distance to the point to be unfolded, the lofting process of the whole bilge keel web is retained, the quality traceability and improvement of bilge keel manufacturing process are facilitated, and the bilge keel lofting result is facilitated to be tested.

The application discloses a welding correction method and device for a ship, a storage medium and a product, and relates to the field of shipbuilding. The method comprises the following steps: according to the segmentation type of a segmentation area, surveying an initial position point of a bilge keel pad on the segmentation area; measuring an initial position point deviation value of the bilge keel pad from a target pad of a segmentation frame in the segmentation area; correcting the initial position point of the bilge keel pad according to the target pad deviation value to obtain a target position point of the bilge keel pad; if the bilge keel pad has been welded on the segmentation area according to the target position point, detecting the actual position point of the bilge keel pad welded on the segmentation area, and the actual included angle between the thickness surface of the web plate and the upper surface of the bilge keel pad; generating a welding correction measure, and the content of the welding correction measure is that the bilge keel pad is corrected from the actual position point to the target position point, and the web plate is corrected from the actual included angle to a target included angle. The twice correction mechanism improves the installation precision of the bilge keel assembly position.

The application provides a determination method of bilge keel installation position, which determines the installation position of the middle bilge keel, simulates the streamline distribution of the ship by using CFD technology, obtains the streamline of the installation position of the middle bilge keel, and further obtains the installation position of the bilge keel on other ship stations, which is convenient and fast, does not need to determine a separate test period, is not limited by time and space, can be carried out synchronously after the determination of the ship line scheme, provides input for the ship structure design, significantly shortens the ship design cycle, saves the design cost, and improves the ship design efficiency; does not need to use oil film or paint to coat the surface of the ship model, avoids the damage to the surface of the ship model, and avoids the influence on the results of the later test of the propeller and energy-saving device, and improves the ship design precision; the method can be applied to all steel ships, and has wide popularization and use value.