85results about How to "Floating fast" patented technology

The invention discloses a continuously-cast mold powder for cold-rolled sheet steel. Chemical composition of the continuously-cast mold powder includes, by mass, Na2O 3-8%, MgO 3-12%, A12O3 3-12%, Li2O < / =3%, F <=5%, MnO < / =15%, BaO < / =8%, TiO2 < / =8%, C 1-3% and the balance of CaO, SiO2 and inevitable impurity and CaO / SiO2 0.8-1.3. The invention further discloses a production method of the continuously-cast mold powder. After fusion of the mold powder, surface tension of the mold powder reaches 450-550mN / m, and accordingly non-invasion between slags and liquid steel is greatly improved, and the mold powder is difficulty torn and involved in the liquid steel and can rapidly float even being involved in the liquid steel. Thus probability that the mold powder is caught by the liquid steel to form subsurface inclusion is greatly reduced, steel quality defect caused in the following cold rolling step is avoided, and yield of steel products is improved.

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.

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 multi-energy complementary power supply ocean observing device, which belongs to the field of ocean engineering equipment. The multi-energy complementary power supply ocean observing device comprises a solar power generating device, a main buoy, a floating body, a cable, an anchor chain, a counterweight, a wave power generation module, a floating ball and an observation device, wherein the observation device comprises a buoyancy chamber, a supporting frame, a signal transmitter, a control chamber, a battery chamber, a acoustic doppler current profiler, a conductivity-temperature-depth system and an online pH detector. The multi-energy complementary power supply ocean observing device is characterized by further comprising a power generation adjusting chamber, a damping disc, a transparent sealing chamber and an acoustic releasing device. During working, the floating body moves up and down under an effect of waves, the main buoy moves with small amplitude under an effect of the damping disc, and the power is generated by means of relative motion between the floating body and the buoy. Electric powers generated by the solar power generating device and the wave power generating device are sent to the observation device after being treated by the power generation adjusting chamber. According to needs, the special observation device can be placed in the transparent chamber. During recycling, a signal is transmitted to the acoustic releasing device, the counterweight is released, and the observation device rises to the sea surface under an effect of buoyancy.

The invention relates to a water purification agent, in particular to an oily sewage purificant used for treating oily sewage in oil fields, which consists of the following components according to weight percentage: 30 to 40 percent of aluminum chloride hexahydrate, 10 to 25 percent of epoxypropyl polyquaternary amine and 35 to 50 percent of poly(diallyldimethylammonium chloride. The oily sewage purificant is mainly used for the emulsion breaking and oil removing of oily sewage emulsion liquid or other 0 / W sewage, has enough strong electrophilicity to neutralize negative charge formed by an emulsifier, has enough strong flocculation capability to flocculate particles in the emulsion liquid for facilitating the formation of large vanadium flowers, and has enough strong surface activity to break the interfacial energy of the emulsion liquid. The purificant is characterized by high deoiling rate, limpid water of dehydration, quick floating upwards of oil clots and even oil-water boundary. In addition, the purificant has the advantages of low dosage, low cost and broad application prospect.

The invention discloses a magnetic suspension molecular pump rotor floating position selection method and a rotor floating control method. The inner circle center of a radial protection bearing stator serves as an original point to establish a rectangular coordinate system, the inner circle of the radial protection bearing stator is averagely divided into n sectorial intervals, and floating control parameters and floating characteristic parameters of rotors are obtained when the rotors are positioned in the intervals by means of suspension test. One interval or two intervals with the best floating characteristic is selected from the n intervals to serve as rotor floating preferential intervals, and the voltage amplitude ranges of X-directional output signals and Y-directional output signals of radial displacement sensors corresponding to the preferential intervals and the floating control parameters are recorded in a storage medium of a controller. When a magnetic suspension molecular pump starts working, the controller of the magnetic suspension molecular pump controls a motor to drive the rotors to reach the preferential intervals and then calls the floating control parameters stored in the controller to control the rotors to float, so that the rotors can rapidly and stably float.

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 recycling method of an LF (ladle furnace) scrap ladle slag inclusion, and belongs to the technical field of steelmaking in the metallurgical industry. The method adopts the technical scheme that the method comprises the following process steps that (1), the LF scrap ladle slag inclusion is subjected to natural cooling, magnetic separation, crushing and screening, and then made into refining slag, with a particle size diameter of 5-30mm, and with the following chemical components by mass percentage: less than or equal to 10% of SiO2, greater than or equal to 40% of CaO, less than or equal to 12% of MgO, 18-45% of Al2O3, less than or equal to 3.0% of MnO, less than or equal to 3.0% of FeO, and less than or equal to 1.5% of S; (2), plain carbon steel is made in a converter, the refining slag is added to a ladle during tapping, 2-3Kg refining slag is added to molten steel per ton, all the refining slag is added before 1 / 3 of a tapping course, and argon blowing is conducted for 3-8min after tapping. The method has the positive effects that the method facilitates improving ladle slag adsorption silicate inclusion capacity, reducing oxidability of the molten steel, reducing consumption of iron and steel materials and alloys in the converter, and further improving the quality of the molten steel.

The invention discloses a wearable steel ball with high toughness and strength, of which the chemical composition comprises by weight: 0.35-0.47% of C, 0.25-0.4% of Si, 2-3% of Mn, 0.03-0.04% of Cu, 1-1.5% of Cr, 0.03-0.05% of B, 0.03-0.06% of Mg, 0.01-0.03% of Ti, 0.02-0.04% of Zr, 0.01-0.03% of Nb, 0.05-0.1% of V, 0.05-0.2% of Mo, 0.1-0.25% of Ni, 0.015-0.018% of Ca+Ba, 0.01-0.02% of S, 0.01-0.02% of P and the balance Fe and inevitable impurities. The invention also provides a preparation method of the wearable steel ball, the process is simple, and the wearable steel ball formed is high in toughness, strength and wear resistance.

The invention discloses a gas generation device capable of providing a gas source for an underwater ordnance floating system. The gas generation device comprises a shell, a combustion chamber and a working chamber which are formed in the shell, and one or more igniters mounted at one end of the shell, wherein a filter sleeve is mounted in the shell; the filter sleeve comprises a large outer sleeve and a small inner sleeve; the combustion chamber is formed through filling the small inner sleeve with a low-temperature gas generant; the working chamber is formed through filling a chamber between the inner wall of the large outer sleeve and the outer wall of the small inner sleeve with the low-temperature gas generant; and a plurality of exhaust holes are formed in the side surface of the shell. The gas generation device has the advantages of simple structure, light weight, low generator inner pressure, stable outlet pressure, low dust, low outlet gas temperature and the like, and requirements of quick floating of underground objects and inflation of airtight sacs in water and air rescue can be met.

The invention belongs to the technical field of metallurgy, and particularly relates to a steel-making aluminum-calcium-iron deoxidizer. The deoxidizer is a ball-shaped composition comprising powder, such as aluminum metal powder, calcium metal powder, iron metal powder and the like. Due to the components, the shapes and sizes of the components, and the shape of the composition formed after balling, the deoxidizer has the characteristics that: the aluminum metal powder, the calcium metal powder and the iron metal powder are pressed into balls, so a preparation method is simple and convenient; the finished products have strong strength, and are directly fed into a head bunker of a steel mill for use; the deoxidizer has high rate of finished products, high reducing capacity, high molten steel deoxidizing capacity, and molten steel total oxygen content lower than that obtained by like deoxidizers; deoxidizing products grow up in a mutual coalescence way, and fast float upwards; the impurity content of the steel is reduced, and simultaneously impurities can be denatured; and the molten steel has high flowability in casting.

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 a method and device for gas floating isolation enrichment of water-blooming cyanobacteria. The method includes the steps that A, gas floating isolation cyanobacteria collecting is carried out, wherein a flexible pipe is inflated to upwards float, a gas floating isolation strip is formed, a cyanobacteria collecting zone is formed on a bank zone, and cyanobacteria-laden water and cyanobacteria slurry in the zone are harvested through a cyanobacteria collecting machine in a concentrated manner; B, sinking for natural cyanobacteria collecting is carried out, wherein after cyanobacteria harvesting is completed, the flexible pipe is deflated to sink, water surface landscapes are recovered, and meanwhile the cyanobacteria is naturally enriched to the bank zone again until the cyanobacteria water concentration reaches the harvesting condition; and C, the flexible pipe achieves flotation and sinking through one of the three manners. After the flexible pipe and a bottom sinking stone cage are wrapped with flexible waterproof cloth, a bag-seaming machine is used for seaming to achieve connection with the flexible waterproof cloth, the stone cage sinks to a water / sediment interface, an inflation sealing valve and a deflation sealing valve are installed at the two ends or one end of the flexible pipe, and the inflation sealing valve is connected with an air compressor. The method is practical, operation is easy and convenient, the requirement of concentrated harvesting of cyanobacteria collecting equipment is met, the cyanobacteria collecting zone can be rapidly formed, and the water-blooming cyanobacteria in a lake water body can be harvested in large scale.

Recently, liquid cleansing oils which have an affinity for makeup fouling and can be easily washed away with water have come to be the mainstream. A composition for cosmetic preparations is provided which has an affinity for makeup fouling and rapidly floats the fouling. It has excellent cleansing power even when the skin is wet, has satisfactory rinsability, leaves no oily feeling after washing with water to give a good use feeling, and has excellent dispersibility in water. The composition comprises: polyhydric alcohol / fatty acid esters characterized in that they are esters of a C6-12 fatty acid with a polyhydric alcohol having two to four hydroxy groups and that the sum of monoesters and diesters accounts for 50% or more of the esters and the proportion of the monoesters to the diesters is 4 or lower; and a nonionic surfactant.

The invention discloses an underwater glider capable of presetting large loads underwater. The underwater glider comprises a bow assembly, a load cabin section assembly, a middle assembly, a tail assembly and a wing unit. The glider is capable of carrying the large load and presetting the large load underwater in an unmanned manner, the wing unit can control the change of an angle of attack of a trailing edge, and the control ability of the whole glider is improved; and in addition, according to the large underwater glider, double buoyancy adjusting modules are adopted, the two identical buoyancy adjusting modules are located in front of and behind the floating center of the glider, and can be turned on at the same time, so that the total oil drainage time and oil return time of the gliderare shortened, and the gliding performance of the glider is increased.

The invention discloses an intelligent flexible enclosure device and is suitable for automatic isolation protection of sensitive water areas. The intelligent flexible enclosure device is composed of a hidden type flexible enclosure, a pollution event pre-warning system and an inflation floating body control system. The hidden type flexible enclosure is formed by sewing a continuous strip-shaped inflation floating body, wall cloth and an anchoring device, wherein the continuous strip-shaped inflation floating body is connected with the inflation floating body control system through a gas guiding pipe; the inflation floating body control system comprises an inflation device, a gas storage device, a pressure sensor and a gas control valve, and the pressure sensor monitors pressure of gas in the gas storage device through connection of the gas guiding pipe; and the pollution event pre-warning system comprises an environment sensor and a microcomputer control system which receives signals of the environment sensor and the pressure sensor and transmits a control instruction. The intelligent flexible enclosure device can perform fast pre-warning based on online-detected pollution events of water environment quality and is quick in response.

The invention relates to a device capable of realizing autonomousdiving and surfacing and quick steering. The device comprises a hull, wherein a propeller is arranged outside the tail of thehull; a steering device which is movably connected with the propeller and used for changing the direction of a water outlet of the propeller is mounted in thehull; the propeller comprises a propeller shaft, the propeller shaft is sleeved with screw blades, and a spline shaft is arranged at one end of the propeller shaft and is connected with a main propellingshaft penetrating through a tail tapered hullthrough a universal coupling. According to the device, ballast loading and unloading are not required, a ballast cabin and a traditional rudder are removed, and autonomousdiving and surfacing and quick steering can be realized.

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 sputtering prevention device for a closestool. The sputtering prevention device comprises a floating body, wherein the floating body floats on a water seal surface in the closestool; the outer surface of the floating body is in a smooth surface shape; a plurality of sputtering prevention strips are arranged at the edge of the floating body; and sticking prevention layers are arranged on the outer surfaces of the floating body and the sputtering prevention strips. The sputtering prevention device has the beneficial effects that the floating body and the sputtering prevention strips are used for buffering impact of excrement falling into water; the excrement can fall on the floating body and the sputtering prevention strips at first and then roll into the water; therefore, the impact of the excrement in the water can be reduced to the maximum extent, and the problem that the closestool sputters the water is solved; by the combined structure of the floating body and the sputtering prevention strips, after the closestool is cleaned, the floating body and the sputtering prevention strips can automatically reset to the start most effective position; the sticking prevention layers are arranged outside the floating body and the sputtering prevention strips, and the outer surface is the smooth surface, so that the self-cleanness of the floating body and the sputtering prevention strips can be guaranteed; even if the excrement is stuck to the surface of the device, the sputtering prevention strips and the floating body can automatically swing and be cleaned along with water flow when the water is flushed; and therefore, attached dirt is removed.

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 discloses a submarine surfacing device. The submarine surfacing device comprises at least one submarine surfacing unit arranged in a water ballast space of a submarine; each submarine surfacing unit comprises a compressible water sac and an osmotic membrane. The compressible water sac is connected with a fresh water source arranged in the submarine and used for receiving fresh water from the fresh water source at least when submarine is to surface; one side of the osmotic membrane is connected with the compressible water sac, while the other side of the osmotic membrane is connected to the outside of the submarine, and the osmotic membrane is used for draining the fresh water in the compressible water sac out of the submarine. The submarine surfacing device is capable of draining the fresh water in the compressible water sac when the submarine has a fault and thus reducing the weight of the submarine to achieve the purpose of surfacing.

The invention relates to an experimental device of simulating ultrasonic-assisted wet process welding and an application method thereof and solves the technical problems of relatively more pores of weld joints, more welding defects, unaesthetic weld joints and poor mechanical property of welding metal in the prior art. The invention provides the experimental device of simulating ultrasonic-assisted wet process welding. The experimental device of simulating ultrasonic-assisted wet process welding comprises a pressure cabin, a gas supply system and a power supply system. A first gas inlet pipe,a second gas inlet pipe and a pressure release valve are separately arranged on the pressure cabin wall in a penetrating manner; a fixed bracket and a walking mechanism are fixedly connected in the pressure cabin, a water tank is arranged on the surface of the walking mechanism, and the moving direction of the walking mechanism is vertical to the axial direction of a welding gun; an ultrasonic device and a welding device, the lower ends of which are placed in the water tank, are arranged in the pressure cabin; the ultrasonic device comprises an ultrasonic transducer and an ultrasonic amplitudetransformer fixedly connected up and down, the ultrasonic waves output by the ultrasonic transducer are longitudinal waves, and the vibrating direction of the ultrasonic amplitude transformer is an axial direction. The device is widely applied to the technical field of underwater welding.

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 relates to an upward-floating and steering integrated device for a small submersible. The upward-floating and steering integrated device comprises a water tank, a supporting board, a piston water tank, a water inflow pipeline, two outlet pipelines, a communicating pipeline, a gear steering mechanism, an injection pump, a main butt joint device, two auxiliary butt joint devices, two electromagnetic valves, a left pipe, a right pipe, a front pipe and a rear pipe. The gear steering mechanism is adopted for combining a steering mechanism and an upward-floating mechanism into a whole, and rapid switching of upward-floating and steering is achieved. Thrust generated by water sprayed from the insides of the pipelines is used for replacing thrust generated by a propeller, and horizontal steering and rapid upward-floating of the small submersible are achieved. The flow is controlled through the electromagnetic valves, under the condition that the advancing condition of the small submersible is not affected, upward-floating avoidance can be achieved according to the size of an obstacle, the technical performance is good, work is reliable, manufacturing, installation and maintenance are easy, the small submersible can avoid the obstacle in time when encountering the obstacle and can float upwards rapidly as well under an emergency, and the underwater operation safety of the small submersible is improved.

The invention discloses a gas-electric hybrid underwater detector, which is provided with a shell, an electric control system, a driving module, a steering module, a detection module and a gas storage cavity. The electric control system, the driving module, the steering module, the detection module and the gas storage cavity are respectively arranged in the shell, and the electric control system is respectively connected with the driving module, the steering module and the detection module. The gas storage cavity is connected with the steering module; the detection module is used for sensing an underwater obstacle and shooting an underwater environment; the driving module is used for driving the underwater detector to advance; the gas storage cavity is filled with liquid compressed gas, the steering module comprises a plurality of one-way valve channels and a plurality of one-way valves, the electric control system is connected with the one-way valves, each one-way valve channel is correspondingly connected with one one-way valve channel, and the one-way valves are connected with the gas storage cavity. Advancing is realized by utilizing the motor, steering, floating and sinking are realized by utilizing pneumatics, and the maneuvering performance is good during underwater detection.

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.

The invention discloses a deep-water sightseeing device. The key point of the technical solution is to divide the sightseeing channel into several sightseeing units through a rotary valve. Since the rotary valve can isolate two adjacent sightseeing units, the water in the sightseeing unit will not Interconnected, so it can ensure that the water pressure in the sightseeing unit will not be particularly large, so it can reduce the requirements for the structure, material and sealing performance of the sightseeing cabin; The corresponding buoyancy control device is installed in the cabin, and the purpose of sinking and floating can be realized by adjusting and controlling the size of the buoyancy; due to the setting of the corresponding slider, the slider moves in the chute during the process of floating or sinking until Moving into the guide groove, due to the rotation of the cylinder, the sightseeing cabin enters into the adjacent sightseeing unit along with the cylinder. The invention can dive to a deeper position in the water and provide users with a more real and rich sightseeing experience.