10 results about "Double bottom" patented technology

The application discloses a marine bottom shielding structure combining a cabin bottom shielding structure and a stack bottom shielding structure, which comprises the cabin bottom shielding structure and the stack bottom shielding structure located on the lower plate of the double bottom of a ship body, and a stack cabin shielding structure and a primary shielding structure located on the upper plate of the double bottom of the ship body, wherein the primary shielding structure is wrapped outside a reactor pressure vessel, the stack cabin shielding structure is located outside the primary shielding structure, the cabin bottom shielding structure is located outside the stack bottom shielding structure, and the stack bottom shielding structure is located below the primary shielding structure. The marine bottom shielding structure combining the cabin bottom shielding structure and the stack bottom shielding structure has simple structure, can form a complete radiation shielding system together with the stack cabin shielding structure, the primary shielding structure and seawater below the ship body, and can weaken the radiation leakage of the stack cabin to the surrounding area to the maximum extent, so as to ensure the radiation safety of personnel and equipment in the surrounding area.

The utility model relates to a compact ship pipe tunnel vehicle arrangement structure in the technical field of ships, which comprises a track extending horizontally, a plurality of through holes penetrating through a pipe tunnel structure body and fixedly connected with the bottom edges of the through holes; the trolley body moves on the track and penetrates through the through hole, the trolley body comprises a frame and a plurality of rollers rotationally connected with the frame, the rollers are in rolling fit with the track, the whole frame is of a plate-shaped structure, the middle part of the frame is concave downwards, serves as a chassis part and is close to the upper surface of the track, and a chassis of the frame of the pipe tunnel trolley is lowered as much as possible; therefore, a large vertical space is obtained. The trolley can be arranged in a narrow double-layer bottom / pipe tunnel, and maintenance and transportation of piping system valves in the double-layer bottom / pipe tunnel are facilitated.

To provide a ship capable of reducing restriction of arrangement of a fuel tank and a pump and transferring methanol as fuel from the fuel tank by the pump while suppressing vaporization of the methanol.SOLUTION: A ship includes a hull having a pair of broadsides and a bottom, a lowermost deck provided in the hull and defining a double bottom space between the lowermost deck and the bottom, a tank at least partially provided in the double bottom space and capable of storing methanol as fuel, a pump provided outside the tank and below the lowermost deck in the hull and pumping the methanol in the tank, and a combustion device provided in the hull and to which the methanol pumped by the pump is supplied.SELECTED DRAWING: Figure 1

The invention relates to a ballast water tank arrangement strategy capable of improving ship sinking resistance, which is characterized in that a horizontal watertight partition plate is arranged in a gunwale tank of a double-bottom double-board ship, and the horizontal watertight partition plate is positioned at an outboard design waterline; the gunwale tank is divided into an upper void tank and a lower ballast water tank by the horizontal watertight partition plate, and the ballast water tank is filled with ballast water all the time. According to the double-bottom double-board ship side tank structure, under the condition that ballast tanks of a ship are filled with ballast water, when a single ballast tank and multiple ballast tanks are damaged or even all the ballast tanks are damaged, the floating state cannot be changed, and forward floating of the ship is guaranteed.

A ship body is provided with the double-layer bottom composed of an inner bottom plate and an outer bottom plate, inner bottom longitudinal ribs are arranged between the inner bottom plate and the outer bottom plate and on the inner bottom plate, outer bottom longitudinal ribs are arranged on the outer bottom plate, the pipe supporting tool is arranged between the inner bottom plate and the outer bottom plate, the pipe supporting tool is provided with a long-strip-shaped round pipe body, and the long-strip-shaped round pipe body is provided with a long-strip-shaped round pipe body. Square sealing plates are arranged at the two ends of the round pipe, and clamps are fixed outside the sealing plates. The clamp is vertically arranged between the inner bottom plate and the outer bottom plate, the inner bottom longitudinal bone and the outer bottom longitudinal bone are located at the two ends of the clamp respectively, inserted into a clamping groove formed by the two limiting plates and fixed through bolts in an abutting mode, and the multiple pipe supporting tools are arranged between the inner bottom plate and the outer bottom plate at equal intervals. The device is used for conducting temporary structural reinforcement on the area, where stress exceeds the standard, of the double-layer bottom structure in the ship launching process of slipway construction, the pressure bearing capacity of the double-layer bottom structure is enhanced, the bearing capacity of the ship bottom structure in the slipway area is effectively improved, and safe launching of the ship for slipway construction is achieved.

The invention relates to the field of shipbuilding equipment.The anti-shearing structure of the container ship cabin comprises an outer plate, a double-layer bottom is arranged at the bottom end of the outer plate, a deck platform is horizontally arranged in the outer plate, an inner longitudinal wall is vertically arranged in the outer plate, the inner longitudinal wall is fixedly connected with the deck platform, and the inner longitudinal wall is fixedly connected with the deck platform. And the inner longitudinal wall is fixedly connected with the outer plate. The structure can be rapidly arranged, the cabin separation requirement of a cabin can be met, the effect of supporting a cabin deck can be achieved, the thickness of a hatch coaming is reduced, and the structure weight and the shipbuilding cost are reduced.

The invention provides a ship double-layer bottom structure which is characterized in that a plurality of mounting parts are arranged in the width range of each container area, and on an inner bottom plate, the mounting parts corresponding to the two sides of the width of each container area are container corner mounting parts; the pipe tunnel longitudinal girder is arranged on the box corner mounting part close to the center line of the ship body; the distance between every two adjacent reinforcing longitudinal girders in the width direction of the ship body is 1-2 times of the width of the container area. And the longitudinal ribs corresponding to the box corner mounting parts are box corner reinforcing longitudinal ribs. According to the double-layer bottom structure of the ship, the installation positions and the arrangement modes of the trusses and the longitudinal bones are limited, on the premise that the structural strength is ensured, construction can be completed through a small number of structural parts, and therefore the construction efficiency is improved, and the construction cost is reduced.

The application provides a ship double-bottom structure, wherein a plurality of mounting portions are arranged in the width range of each container area, the mounting portions corresponding to the container area on both sides of the container area width on the inner bottom plate are box corner mounting portions; the pipe string longitudinal girder is arranged at the box corner mounting portion close to the ship centerline; the distance between two adjacent strengthening longitudinal girders in the ship width direction is 1-2 times the container area width; and the longitudinal bone corresponding to the box corner mounting portion is a box corner strengthening longitudinal bone. The ship double-bottom structure limits the mounting position and arrangement mode of the truss and the longitudinal bone, so that the same size ship can be built by using a smaller number of structural components under the premise of ensuring the structural strength, thereby improving the building efficiency and reducing the building cost.

The invention relates to a ship (1) with a hull (2) and a sailing device (3) comprising a telescopic mast (4) with a telescopic axis (t), and which can be integrated into a load-bearing system, a rescue system, and a propulsion system of the ship (1) with a level control (1') for the longitudinal, transverse, and vertical axes (x, y, z). The ship (1) has a buoyancy center (cb) and a center of gravity (cg), and is designed with an underwater hull (10) which connects a bow (14) to a stern (15) via a keel (12) and has a lowest bulkhead deck (q1) formed by a double bottom (11). The hull (2) has longitudinal and transverse bulkheads (b,b') which, together with a plurality of decks (p1-pn), enclose a plurality of vertically arranged air chambers (c1-cn) with a height (h) extending from a lower bulkhead deck (q1-qn) to a watertight main deck (13) along the longitudinal axis (x).The level control (1') of the longitudinal, transverse, and vertical axes (x,y,z) is achieved via extendable outboard wings (5,5') on the starboard and port sides, which together with a dynamically displaceable water ballast (6,6') of the underwater hull (10) are designed to align the telescopic axis (t) of the telescopic mast (4) installed in an air chamber (c1-cn) vertically when the ship (1) is sailing.

The invention relates to a multi-beam sounding method for an ultra-large trailing suction dredger, and the method comprises the following steps: S1, arranging a multi-beam sounding system: arranging three cabins at the position of a double-layer bottom, which is one third of the length of a bow, on the dredger, and respectively installing two sets of multi-beam depth sounder and a set of log; s2, preparation before operation: synchronously connecting a multi-beam sounding system with a GNSS, an IMU and a sound velocity profiler, and performing offset calibration and attitude calibration; s3, dredging operation: when the dredger starts dredging operation, the multi-wave velocity sounding system transmits current water depth data to an intelligent course operation system of the dredger, positioning data is provided by a GNSS, attitude data is provided by an IMU, and sound velocity data is provided by a sound velocity profiler; according to the multi-beam sounding method, efficient and continuous data acquisition and processing are realized on a working platform integrating vibration, noise and strenuous movement, and accurate data support is provided for dredging operation decision making of an ultra-large trailing suction dredger.