84results about How to "Floating fast" patented technology

The invention discloses a stagewise buoyancy drive heavy-load underwater vehicle. The stagewise buoyancy drive heavy-load underwater vehicle comprises a heaving line, a bow outer shell, a front cabinsection, a middle cabin section, a rear cabin section, an antenna cabin section, a tail rudder section and a tail propeller, wherein the heaving line, the bow outer shell, the front cabin section, themiddle cabin section, the rear cabin section, the antenna cabin section, the tail rudder section and the tail propeller are sequentially arranged from front to back. A front buoyancy adjusting moduleand a transverse propeller are arranged in the front cabin section, and a power module, a control module and a posture adjusting module are arranged in the middle cabin section. A rear buoyancy adjusting module is arranged in the rear cabin section, and two gliding wings are arranged on the two sides of the rear cabin section. A wireless communication antenna and an iridium satellite and Beidou antenna are arranged on the upper portion of the antenna cabin section, and a load rejection module is arranged on the lower portion of the antenna cabin section. A cross-shaped rudder mechanism is arranged in the tail rudder section. The tail propeller is mounted behind the tail rudder section. The heaving line is located at the foremost end of the bow outer shell and connected with the bow outershell through a bolt. All stages of oil pumps of the two buoyancy adjusting modules can be simultaneously switched on, the oil drainage time and the oil return time of the vehicle are shortened, and the gliding performance of the vehicle is improved.

The invention relates to a swirling aggregation air flotation degreasing column, which comprises a lower air flotation column, an upper air flotation column and a swirling dissolved air tank, wherein a swirling air flotation oil collection tank, a floating residue discharging port, a swirling air flotation column outer cylinder, a center swirling air flotation column, a water distribution pore plate, a support pipe, an egg tray shaped disk sheet aggregation filler, a support pipe and an aggregation inclination plate filler are arranged in the upper air flotation column, the swirling air flotation column outer cylinder is connected to the swirling dissolved air tank, a baffle, a dissolved air release device, a separation plate, a sludge collection cone cylinder, a water purification area, a water outlet, a dissolved air water outlet and a venting port are arranged in the lower air flotation column, the dissolved air release device is communicated to the swirling dissolved air tank, the bottom portion of the sludge collection cone cylinder is provided with a precipitation cylinder, the bottom portion of the precipitation cylinder is communicated to the water inlet of the center swirling air flotation column, the precipitation cylinder is communicated to the water purification area, the water purification area is communicated to the lower air flotation column, and the dissolved air water outlet is connected to the swirling dissolved air tank. According to the present invention, the swirling aggregation air flotation degreasing column has advantages of simple structure, high degreasing efficiency, high suspended solid removal efficiency, fine and uniformly-dispersed air bubbles, and the like.

The invention discloses an underwater detection device convenient for accurate positioning and fixing. The device comprises a working box body, a power cavity is formed in the working box body, a motor is fixedly arranged on the inner wall of the left side of the power cavity, the underwater detection device is driven to dive through thrust generated by rotation of a propeller, the thrust direction borne by the underwater detection device is changed by changing the direction of the propeller, and the device floats upward. When the device dives, air in a floating and sinking cavity is exhausted, water is injected into the floating and sinking cavity, the overall weight of the device is increased, the buoyancy of the device is reduced, the stability of the device in the diving process is facilitated, and the influence of water flow on the diving position of the device is reduced; when the device dives to the water bottom, a drill bit is used for drilling and feeding the water bottom to achieve fixing of the device, the device can stably conduct underwater detection work for a long time, the underwater air communication with the water surface is achieved through a released buoyancy plate when the device floats upwards, and air is injected into the floating and sinking cavity to reduce the weight of the device and increase buoyancy; and the rapid upward floating of the device is achieved.

The invention provides a buoyancy control method of an unpowered rapid submerging and floating AUV. By recording the change time t of the AUV from the horizontal posture to the vertical posture and performing weighted fusion calculation on the approximate uniform motion speed of the AUV in the vertical posture, an accurate and sufficient motion distance is provided for the change process of the AUV from the vertical posture to the horizontal posture before the AUV reaches the target depth; in the diving or floating process that the vertical posture of the AUV is changed into the horizontal posture and in the diving or floating process that the AUV is in the horizontal posture, the AUV is in the horizontal posture; a depth and speed double-closed-loop control method is adopted for continuously adjusting the buoyancy adjusting mechanism, and on the basis, a nonlinear expansion state observer is utilized for estimating and compensating marine environment interference borne in the diving or floating process. Under the condition that power propulsion devices such as a main propeller, an auxiliary propeller and a rudder are not used, the underwater robot dives or floats upwards to the target depth more accurately and rapidly.

The invention relates to a method for deoxidizing and alloying molten steel, comprising the following steps of: firstly, measuring the actual oxygen content of each heat of molten steel; then, accurately calculating alloy amount required by deoxidizing and alloying treatment; and conveying alloys with moderate particle size to molten steel of a ladle through a blowing pipe and inert gas to enable ferroalloys to completely melt before floating to the surface of molten steel so as to achieve the deoxidizing and alloying effects almost without loss. In the invention, the alloy amount is accurately calculated, alloys can be sufficiently stirred in molten steel so that the deoxidizing and alloying effects of alloys are obvious, the oxidation loss in the process of deoxidizing and alloying treatment is also avoided, and the quality of molten steel is greatly improved.

The invention discloses an underwater emergency load rejection device. The underwater emergency load rejection device comprises a submersible, a rack is installed at the bottom of the middle standingface of the submersible, a releasing mechanism is installed in the middle of the rack, a heavy block box is installed at the rear portion of the rack, a driving assembly is installed at the front portion of the rack, and the heavy block box is released through the releasing mechanism under the power of the driving assembly. The underwater emergency load rejection device is compact and reasonable in structure and convenient to operate, the load rejection device is installed in a flat space, the emergency capacity is high, safety and reliability are achieved, operation is easy, remote load rejection and rapid floating of the submersible can be manually and rapidly achieved when a power source is lost in an emergency, and the safety of personnel and the submersible is guaranteed.

The invention discloses a method for separating hawthorn juice and pectin. The method comprises the following steps: selecting ripe hawthorn and cleaning; mixing the hawthorn with water, and pulping to obtain fruit pulp; carrying out enzymolysis on the fruit pulp; squeezing the pulp subjected to enzymolysis to obtain initial fruit juice with the pH value of 2.6-3.6, and guiding the initial fruit juice into a separation tank; and introducing nitrogen into the separation tank, in the process of introducing the nitrogen, aggregating pectin in the initial juice and floating the pectin to the surface of the juice along with the nitrogen, extracting the layered clear juice from the bottom of the separation tank to obtain hawthorn juice, and purifying the separated pectin to obtain the hawthorn pectin. The invention further discloses a brewing method of hawthorn fruit wine. The appearance, aroma and taste of the hawthorn fruit juice prepared by the method are greatly improved, and meanwhile,the hawthorn pectin is extracted; the brewed hawthorn fruit wine is good in quality, bright and bright red in color and luster, strong in fragrance, mellow in taste, proper in sourness and sweetness,unique in flavor, high in flavonoid content and low in methanol content.

The invention provides a flotation agent and a separation method of camellia seeds. According to the flotation agent, low-density liquid of which the density is 0.90 to 0.99 g / cm<3> is used as a mainbody of the flotation agent, micro-nano bubbles are dispersed in the main body of the flotation agent, the diameter of the micro-nano bubbles is 20 to 50 mum, and the solution volume ratio of the bubbles to the main body of the flotation agent is 1:10 to 1:20. When the flotation agent is used for efficiently floating and separating the camellia seeds and camellia shells, the adaptability to camellia seed raw materials is wide, the separating effect is good, the flotation speed is high, and large-scale continuous production is easy.

The invention provides a sea buckthorn berry oil preparation method which is implemented by the following steps: (1) cleaning sea buckthorn berries; (2) quickly freezing; (3) pulping; (4) hydrolyzing pectinase; (5) precipitating with alcohol; (6) freezing to stratify sea buckthorn berry oil; (7) extracting raw oil; (8) recovering ethanol by distillation; (9) carrying out secondary freezing and thawing to separate the sea buckthorn berry oil; and (10) refining to obtain the sea buckthorn berry oil. In the invention, poisonous and odorous organic solvents are not used, and the extraction process cost is low, thereby ensuring that the preparation method has a high use value.

An apparatus for saving drowning children including an expansion part that is selected and operated to any one of a folded mode and an expansion mode, a manual operation part that is connected to an expansion part receiving unit, a communication module which can communicate with the terminal, a trigger module that triggers the expansion part, and a controller that controls the trigger module, wherein the expansion part is manually triggered when a predetermined motion is performed on the manual operation part or automatically triggered according to a predetermined algorithm by the controller, and the communication module transmits at least some of the data input into the controller to the terminal.