摘要:
A hydraulic depth-control device for a submersible body comprises:a variable-volume ballast space,a pressure accumulator comprising a hydraulic chamber and a gas chamber, which chambers are separated by a deformable or mobile wall, the gas chamber containing a gas at an absolute pressure higher than atmospheric pressure,a hydraulic pump coupled to an electric motor, the hydraulic pump having a suction inlet connected to the ballast space and a delivery outlet connected to the hydraulic chamber of the pressure accumulator,a return hydraulic circuit connecting the hydraulic chamber of the pressure accumulator to the ballast space via an electrically operated valve, anda hydraulic fluid arranged in the ballast space, the hydraulic pump, the hydraulic chamber of the pressure accumulator and the return hydraulic circuit.
摘要:
A pneumatically controlled shellfish aquaculture apparatus is provided. A frame has containers for holding shellfish secured to the top side of the frame and tanks secured to the bottom side of the frame. Each tank has an air supply line connected to the tank and an opening on the bottom side of the tank. Each air supply line is connected to a manifold for controlling airflow to the tanks. Air is used to displace water in the tanks by pushing the water out of the openings in the bottom of the tanks in order to float the frame. To submerge the frame, the tanks are depressurized to allow water to displace the air in the tanks. When floating, the tanks lift the frame and the containers out of the water to allow air desiccation in order to prevent bio-fouling of the equipment and shellfish.
摘要:
An underwater towing device, including an underwater towing assembly and a fixing mechanism of the underwater towing assembly. The underwater towing assembly includes a first floating body, a second floating body, and a third floating body. The fixing mechanism includes a fairlead carrier and two supports disposed on two sides of the fairlead carrier. The first floating body, the second floating body, and the third floating body are connected together via a fixing frame. The first floating body, the second floating body, and the third floating body have streamlined and bilaterally symmetrical shapes and all are hollow to accommodate experimental equipment. The first floating body is a cylinder having a drop-shaped horizontal cross-section. The upper part of the first floating body is provided with a buoyancy reserve tank having an elliptic horizontal cross-section.
摘要:
A method to improve the safety and comfort of an ultra large marine floating system is provided. The ultra large marine floating system has a length of 350 to 550 m, a width of 45 to 80 m, and a depth of 25 to 35 m. The ultra large marine floating system has a tank zone and a plant zone that are visibly separated from one another. Additionally, the tank zone has LNG storage tanks, self-supporting spherical (MOSS type) tanks, a membrane tank arranged in a hold, and the plant zone includes a liquefied natural gas plant.
摘要:
A flexible lifting tether system for lifting a marine vehicle or object is described which is capable of significantly improving the primary characteristics of an existing cable by enhancing load-carrying capabilities (e.g. in air), modifying the tether to have altered specific gravities in water, and relieving torsional stresses when in operation.
摘要:
An underwater vehicle for transporting extraction fluids, for example natural gas, oil or water, has an overall elongated form and includes one or more containment tubes configured to contain the fluid to be transported and forming a bundle that prevalently extends longitudinally with respect to the underwater vehicle, making the vehicle structurally more robust and intrinsically safe.
摘要:
A floating construction comprising a container filled fully or partially with water, the lower portion of the container being located within a surrounding body of water and the water surface level of the surrounding body of water being substantially lower that the water surface level inside the container, the container comprising transparent walls or walls with transparent sections and at least one open opening for entering the container, which at least one open opening is located below the surface level of the surrounding body of water, and which floating construction comprises space for spectators observing activities taking place inside the container, wherein the floating construction comprises at least one ballast tank, which ballast tank is connected to the container with a controllable pressure connection, and which ballast tank has controllable water connection to the surrounding body of water.
摘要:
A production support and storage vessel is provided, as well as a method of processing material, such as ore, gathered from the seafloor using such a vessel. The production support and storage vessel has facilities to receive ore from the seafloor, process it, and store the ore in bulk storage silos. Additionally, the production support and storage vessel has a ballast capability and system to ballast the vessel down to a full operational draft. When needed, typically approximately weekly, a transport vessel is moored to the production support and storage vessel and the production support and storage vessel offloads the stored ore using a conveyor system.
摘要:
A lifting platform for use in a body of water has (a) a plurality of float modules, each float module having a buoyancy compartment, and each float module being attached to adjacent float modules by means of flexible joints; (b) at least one container disposed in each float module for retaining a buoyancy fluid; and (c) a discharge apparatus for discharging buoyancy fluid to the buoyancy compartments of the float modules, so as to fill each buoyancy compartment with buoyancy fluid, thereby causing the plurality of modules to float to a position at or near the surface of the body of water.
摘要:
Disclosed herein is a novel boat design and configuration, and more specifically to boat console and propulsion arrangements for a variety of boat types including wakeboard boats, sport-fishing boats, and other sport and recreational boats. In an exemplified embodiment, boats described herein comprise a combination of a center console and V-drive transmission.