36results about How to "Reduce water depth" patented technology

A coastal recovery module including a body portion defining an interior compartment. The coastal recovery module may also include a selectively sealable fluid conduit. The selectively sealable fluid conduit may provide a fluid communication between the interior compartment and an exterior of the body portion, the fluid conduit configured for selectively flooding and dewatering the interior compartment. The coastal recovery module may further include a wave energy mitigation structure associated with at least a portion of a top surface of the body portion.

A transparent solar heat absorbing apparatus includes a transparent member allowing sunlight to pass through, a wavelength selective member disposed beneath the transparent member, a heating tank formed between the transparent member and the wavelength selective member. The wavelength selective member allows light in a transmission range including at least a visible wavelength range to pass through and reflects light in a reflection range including at least an infrared wavelength range. At least one of the transparent member and the wavelength selective member has a waveform structure on at least one of its upper surface and bottom surface.

The invention discloses a water seepage structure of a road with a waterproof road surface and a transformation method, and belongs to the field of municipal engineering. The water seepage structure comprises a plurality of water seepage pipes with water seepage holes in the periphery, a water seepage ditch is arranged at one end of each water seepage pipe, filter nets are arranged on pipe openings and orifices of the water seepage pipes, the water seepage pipes are arranged below a road rammed earth layer, the water seepage ditches are arranged below a green belt or a sidewalk, the bottoms of the water seepage ditches are backfilled with stone or sand, the top layers of the water seepage ditches are provided with green belts or cement bricks, the water seepage ditches are communicated with the curb, overflowing openings are formed in the water seepage ditches, road water overflowing can be relieved by means of the water seepage structure and construction method, disaster caused by unsmooth road accumulated water is avoided, the road water seepage speed and water seepage total quantity are improved, the underground conservation is improved, the modification cost is lowered, and the building cost is saved.

The invention relates to an aquaculture facility applicable to open sea areas where waves are huge and flow is rapid as well as a method. The facility comprises culture containers, floating bodies, a hanging rope, a main rope, a seedling rope, weight stones, a cable, an anchor, a signal rope and signal drifts, wherein, the floating body is tied to the upper end of the culture container, and the lower end of the culture container is tied to the main rope through the hanging rope, so that the culture container is positioned above the main rope; the distance that the main rope and the culture containers are away from the sea floor can be adjusted by adjusting the lengths of the seedling rope and the cable ; the signal shifts float on the water surface and are connected with two ends of the main ropes through the signal rope; and when the facility is operated, the main rope is pulled out of the water surface through the signal rope, the culture containers are cast with bait and harvested one by one along the main rope, or the culture depth is regulated. The facility and the method have the advantages that the culture containers can be protected from the influences of wind and waves on sea water, damages to cultured organisms and the facility by bad weather are avoided, cultured organisms can be farmed in clean outer lakes where water layer is the most proper and water flow is unobstructed as well as open sea areas around islands, the culture containers suspend, the weight of the facility is reduced, and the labor intensity is reduced. The facility is applicable to abalone culture and to culture of fixed type aquatic animals and plants (such as oyster and kelp) or aquatic animals and plants which have a certain attachment ability (such as sea cucumber).

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include an upper drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The upper drive unit is movably joined with a lower drive unit, which includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The lower drive unit is movable from a raised mode, in which it is adjacent the upper drive unit, to a lowered mode, in which it is a preselected distance from the upper drive unit, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and outdrive upper unit are also provided.

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include a standoff box joined with a drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The drive unit includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The drive unit is vertically movable from a raised mode to a lowered mode, in which the propeller shaft is a preselected distance from a bottom of the boat hull, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and standoff box are also provided.

The invention discloses an in-containment refueling water storage tank for a nuclear power station. The refueling water tank comprises an inner ring pool located between a reactor pit of the nuclear power station and a secondary shielding wall, and a bearing floor located at the upper part of the inner ring pool, wherein an inner ring water return hole is formed in the bearing floor; an inner ring detaining basket corresponding to the inner ring water return hole is arranged in the inner ring pool; an inner ring reflux buffer pool is arranged between the inner ring water return hole and the inner ring detaining basket; an annular space is formed between the secondary shielding wall and the containment vessel of the nuclear power station; an outer ring pool is arranged at the lower part of the floor of the annular space; the outer ring pool is communicated with the annular space through an outer ring water return hole; an outer ring detaining basket corresponding to the outer ring water return hole is arranged in the outer ring pool; and the outer ring pool is communicated with the inner ring pool through a channel. Compared with the prior art, the in-containment refueling water storage tank has the advantages that the outer ring pool is arranged in the refueling water tank with the built-in containment vessel for the nuclear power station, so that the volume of the refueling water tank with the built-in containment vessel can be significantly improved; the water depth is reduced and the shock resistance of a reactor building is improved.

The invention discloses a vehicle passive safety auxiliary device and a use method thereof. The vehicle passive safety auxiliary device comprises a central unit, a vehicle-mounted bus network, an emergency button, a vehicle-mounted power supply, an interaction module and six intelligent gas bag boxes. The intelligent gas bag boxes are arranged on a vehicle and connected with the central unit. The vehicle-mounted bus network, the emergency button, the vehicle-mounted power supply and the interaction power supply are electrically connected with the central unit. Each intelligent gas bag box comprises a shell, wherein a first radio frequency module, a second self-contained power pack, a gas generator, a gas bag, a gas bag opening sensor, a water pressure sensor and a second processing module are arranged in the shell, the gas bag opening sensor is connected with the gas bag, and the first radio frequency module, the second self-contained power pack, the gas generator, the gas bag opening sensor, the water pressure sensor and the second processing module are electrically connected. The vehicle passive safety auxiliary device is strong in flexibility, convenient and rapid to install, replace and maintain and high in user-friendly degree, a passive safety concept is fused in the vehicle passive safety auxiliary device, and the vehicle passive safety auxiliary device has large application market in places nearby seas, lakes and rivers and places where heavy rainfall easily happens.

The invention relates to an auxiliary side-scan sonar operation device. The device comprises a floating boat main body, a lifting device, a driving device, an energy transducer and a land computer terminal. Through arrangement of the land computer terminal, a first antenna, a second antenna, and a third antenna, the staff at the land computer terminal can know the underwater environment of the underwater energy transducer in real time, avoids underwater obstacles, and avoids damages to the energy transducer, wherein the first antenna, the second antenna, and the third antenna communicate with the land computer terminal. On the other hand, the land computer terminal can control the auxiliary side-scan sonar operation device through the first antenna, the second antenna, and the third antenna in real time, therefore the sonar operation can be carried out through a remote control mode, thus the boat rent is lowered, the cost is reduced, and the problem of low accuracy of side-scan images caused by renting miniature boats is avoided.

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include a standoff box joined with a drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The drive unit includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The drive unit is vertically movable from a raised mode to a lowered mode, in which the propeller shaft is a preselected distance from a bottom of the boat hull, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and standoff box are also provided.

The invention discloses a deformed inverse step rectifying energy dissipation method and a stilling basin. A continuous inverse step tail on a bottom plate is adopted instead of the conventional tail body type, and water current is collided with inverse steps hierarchically, so that energy is dissipated hierarchically, water current collision, doping and a fluctuation flow state before drainage are enhanced, and collision energy dissipation is realized; a vertical drop is arranged at a front-end inlet; side walls on both sides are asymmetrically diffused towards a river heart side curved surface, and the edges of each step are arranged in a continuous L or saw-tooth form, thereby forming transverse and longitudinal three-dimensional deformed inverse step structures being lower at the inlets, higher at the outlets, lower on the river heart sides and higher on the near-bank sides, so that a hydraulic jump energy dissipation flow state is formed forcibly in the basin. Meanwhile, water current is fully diffused transversely and is guided towards the river heart side, so that the basis length can be shortened effectively, the energy dissipation rate is increased, the effects of dissipating energy and adjusting the flow speed distribution are achieve, water current discharged out of the basin returns into a groove smoothly, and downstream erosion is relieved. The deformed inverse step rectifying energy dissipation method and the stilling basin are suitable for a water flow state with low water head, large unit width flux (particularly greater than m<2> / s) and low Fr number (particularly Fr number is smaller than 2).