150results about How to "Increase water velocity" patented technology

The invention belongs to a reactor core of nuclear reactor, specifically to a reactor core of nuclear reactor with fast neutron converting area. The reactor core comprises a fast neutron converting area, a basic reactor core area and a reflecting layer area. The fast neutron converting area is positioned at the center of the nuclear reactor; the basic reactor core area is positioned at the periphery of the fast neutron converting area; and the reflecting layer area is positioned at the periphery of the basic reactor core area. The fast neutron converting area comprises a central lattice cell, a second circle of lattice cells and a third circle of lattice cells; the basic reactor core area comprises a fourth circle of lattice cells; and the reflecting layer comprises a fifth circle of lattice cells and a sixth circle of lattice cells. The reactor core is hexagonal; a short fuel subassembly is arranged in the lattice cell of the fast neutron converting area; and a long fuel subassembly is arranged in the lattice cell of the basic reactor core area. The flow speed of the water flow of the short fuel subassembly is high under same pressure difference of the reactor core, thereby being helpful to discharge heat and having higher power density and higher fast neutron fluency rate.

An electrical generation system. A floating vessel is anchored in flowing water. Inlets in the hull of the vessel capture flowing water and direct the water to one or more turbines. The system is designed so that all flows are two-dimensional to the extent possible. The latter feature greatly simplifies both design and construction.

The invention discloses a water pipe micro-leakage monitoring device and a micro-leakage monitoring method thereof. An impeller and an electromagnetic valve are disposed in a pipe. One end, adjacent to a water inlet, of the impeller is provided with a check valve having pores. A controller for controlling the on and off of the electromagnetic valve is disposed outside the pipe. A sensor for sensing the rotating state of the impeller is disposed on the impeller. The sensor and the electromagnetic valve are connected separately with the controller. The combination of the check valve with the pores allows the water flow speed generated due to micro-leakage or drip leakage to be increased, the micro-leakage monitoring is achieved with the cooperation of the impeller and the sensor, and in this way, misjudgments caused by transient flow movement due to shock or other special reasons are effectively prevented. Thus, the accuracy is improved, and the invention also has the advantages of simple structure, low cost and easy popularization.

A controllable siphon drainage device of reservoir drainage and flood discharging of the invention comprises a dam body, a siphon pipe, a gas outlet valve, a gas outlet pipe, a water inlet pipe, a water inlet valve, a gas inlet pipe provided with a valve, a gas-liquid separator, a water charging pipe provided with a valve and a purge valve. The invention is characterized in that: the dam body is provided with a siphon pipe, the entrance end of the siphon is arranged in the lower part inside the reservoir dam body, the exit end of the siphon is provided with an elbow arranged in the lower part outside the reservoir dam, the middle part of the siphon is arranged on the top of the dam body, the siphon pipe is provided with a gas inlet pipe with a valve, the siphon pipe is connected to the gas-liquid separator through the gas outlet pipe and the water inlet pipe, the gas outlet pipe is provided with a gas outlet valve, the water inlet pipe is provided with a water inlet valve, the top end of the gas-liquid separator is provided with a purge valve and a water charging pipe with a valve. The invention has the advantages of simple operations, convenience and quickness, work-saving and labor-saving; can improve the effective height, reservoir capacity, flood charging and discharging and normal drainage ability, thereby improving the reservoir safety and flexibility.

The invention provides a flow-line variable-cross-section back-flushing energy dissipation fishway with a fish luring function. The flow-line variable-cross-section back-flushing energy dissipation fishway comprises bottom plates, back-flushing water outlets, a base, flow-line-type combination side walls, back-flushing waterways, a lower chamber, an underwater water outlet; the flow-line-type combination side walls are uniformly arranged along the whole fishway; the back-flushing waterways are formed in the bottom plates and are located at downstream parts which are 60 cm away from narrowest parts of the fishways defined by the left and right flow-line-type combination side walls; the lower chamber is arranged below the bottom plates; the underwater water outlet is formed in a bottom partof a tail end of the lower chamber; and each back-flushing waterway is of a curve-surface structure of which the lower part is large and the upper part is small. The flow-line variable-cross-section back-flushing energy dissipation fishway has the beneficial effects that flowing speed and flow of bottom-layer water flows of the water outlets of the fishway are increased through bottom-layer high-pressure water flows, and a fish luring effect of the water outlets in the fishway is improved; back-flushing water flows and flow-line-type fishway side walls are designed, so that water flow energy in the fishway is dissipated; the flowing state and flowing speed of water flows in the fishway are improved; and a fish passing rate of the fishway is improved.

The invention provides a flow-line variable-cross-section back-flushing energy dissipation fishway with a fish luring function. The flow-line variable-cross-section back-flushing energy dissipation fishway comprises bottom plates, back-flushing water outlets, a base, flow-line-type combination side walls, back-flushing waterways, a lower chamber, an underwater water outlet; the flow-line-type combination side walls are uniformly arranged along the whole fishway; the back-flushing waterways are formed in the bottom plates and are located at downstream parts which are 60 cm away from narrowest parts of the fishways defined by the left and right flow-line-type combination side walls; the lower chamber is arranged below the bottom plates; the underwater water outlet is formed in a bottom partof a tail end of the lower chamber; and each back-flushing waterway is of a curve-surface structure of which the lower part is large and the upper part is small. The flow-line variable-cross-section back-flushing energy dissipation fishway has the beneficial effects that flowing speed and flow of bottom-layer water flows of the water outlets of the fishway are increased through bottom-layer high-pressure water flows, and a fish luring effect of the water outlets in the fishway is improved; back-flushing water flows and flow-line-type fishway side walls are designed, so that water flow energy in the fishway is dissipated; the flowing state and flowing speed of water flows in the fishway are improved; and a fish passing rate of the fishway is improved.

The invention discloses an open-channel rainwater generating system and method. The open-channel rainwater generating system comprises a house roof, a header pipe, an open approach channel, overflow holes, a volute, an exhaust water pipe, a generator, a turning wheel, a water guider, an outlet line, a control valve and a water retaining wall; the house roof is connected with the open approach channel via the header pipe; the water retaining wall is arranged at the rear end of the open approach channel, and the remote end of the open approach channel is connected with the volute; the control valve is arranged between the open approach channel and the volute; the overflow holes are arranged at the upper part of the water retaining wall and the upper part of the volute; a hydraulic generatoris arranged in the center of the volute; the hydraulic generator comprises the generator, the turning wheel and the water guider; the exhaust water pipe is arranged at the bottom of the hydraulic generator; and the outlet line is arranged on the generator. The open approach channel and the volute adopted in the invention have the advantages of low investment and convenience for construction; the flow rate of water is increased by the produced volute effect so that the generating efficiency is improved, and therefore, the complexity of rainwater power generation is reduced and the investment cost of rainwater power generation facilities is lowered.

The invention relates to a novel high power water load. The novel high power water load comprises a waveguide radiation horn mouth, a base, a spiral water chamber, a terminal short circuit block, and a protection housing disposed on the outer side of the spiral water chamber. Spiral type flowing water used as a microwave absorber is disposed in the spiral water chamber. The front end of the spiral water chamber is in the shape of a cone, and the rear end of the spiral water chamber is in the shape of a cylinder. One end of the waveguide radiation horn mouth is fixedly connected with an output radiation waveguide, and the other end of the waveguide radiation horn mouth is connected with the base. The other end of the base is connected with the rear end of the spiral water chamber and the bottom part of the protection housing, and the side of the base connected with the spiral water chamber is provided with a groove embedded in the rear end bottom part of the spiral water chamber. The side of the rear end of the spiral water chamber connected with the base is a water inlet, and the side of the front end of the spiral water chamber is a water outlet. The front end of the terminal short circuit block is in the shape of a cone, and is embedded in the front end of the spiral water chamber, and the rear end of the terminal short circuit block is connected with the top part of the protection housing. The water load is capable of satisfying use requirements of a high power millimeter wave electric vacuum device, and at the same time, the broadband low reflection of the water load is realized.

The invention provides an agricultural quantitative watering device based on internet of things and a use method thereof. The agricultural quantitative watering device based on internet of things comprises an installing plate, wherein the left end and the right end of the installing plate are in sleeved connection with connecting rods, the positions of the connecting rods are fixed through lockingscrews located at the tops of the connecting rods, the bottoms of the connecting rods are provided with vertically arranged columns, one side of each column is rotatably connected with a rolling wheel through a hinge pin, the central part of the top of the installing plate is connected with a connecting plate through a rotary rod, the top of the connecting plate is connected with a water storagetank, the top of the water storage tank is provided with a water inlet. After the agricultural quantitative watering device senses that moisture in soil reaches a set value through a temperature sensor and a humidity sensor which are buried in the earth's surface, a central control unit controls a water pump and a magnetic valve to be shut down, irrigation is stopped, water is saved, automatic stop of the irrigation process is achieved, and crop damage and water resource waste caused by broad irrigation are avoided.

The invention discloses a combined hydraulic rectification device of a pump station water inlet pool at an ultralow water level. The combined hydraulic rectification device comprises a diversion canal, a front pool, a water inlet pool, a water inlet pipe, a water inlet flared pipe, a flow guide table, an underwater vortex elimination cover plate and a W-shaped flow guide pier, wherein the water inlet pipe downwards extends into the rear end of the water inlet pool; the water inlet pipe is connected with the water inlet flared pipe; the flow guide table is arranged on a bottom plate of the water inlet pool and is coincident with the axial line of the water inlet flared pipe; the circumference surface of the flow guide table is a smooth curve surface; the cross section of the flow guide table is a round plane, and the area is gradually decreased from bottom to top; the underwater vortex elimination cover plate is arranged at the rear end of the water inlet pool, and is positioned in a connection position of the water inlet pipe and the water inlet flared pipe; the W-shaped flow guide pier is arranged on the bottom plate of the water inlet pool and is tightly attached to the rear wall of the water inlet pool; the W-shaped flow guide pier is formed by two flow guide edge piers and one flow guide middle pier; the W-shaped flow guide pier is higher than the underwater vortex elimination cover plate. The combined hydraulic rectification device has the advantages that the water flow of the water inlet pool is enabled to be uniform and stable, so that a water pump machine unit stably, safely and reliably operates at the ultra-low water level of the water inlet pool.

The invention discloses a hydraulic turbine generator. The hydraulic turbine generator comprises a hydraulic turbine room and a power generation room; the hydraulic turbine room is provided with a water inlet and a water outlet that have equal calibers and overlapped axes, and are opposite in the directions; a rotating wheel is arranged in the hydraulic turbine room; the rotating wheel is composed of a wheel disc and a water bucket or blades; the hydraulic turbine generator further comprises a reducing pipe connected with the water inlet and an increasing pipe connected with the water outlet; between the inner wall of the hydraulic turbine room and a rotatable sweeping space of the rotating wheel, a design of uniform small clearances is adopted; the power generation room is arranged at the outer side of the hydraulic turbine room; preferably, a contraction angle of the reducing pipe is 15-30 degrees; preferably, the axial length of the reducing pipe is greater than the inside diameter of the large opening; the clearance between the inner wall of the hydraulic turbine room and the rotatable sweeping space of the rotating wheel is less than or equal to 1mm, and less than or equal to 0.5mm preferably. Compared with the prior art, the hydraulic turbine generator disclosed by the invention has the beneficial effects of greatly increasing the velocity of water flow which impacts the blades of the rotating wheel, raising a specific rotary speed and loading ability of the rotating wheel, and further improving power generation efficiency; and meanwhile, the hydraulic turbine generator further has the beneficial effects of keeping the velocity of tail water, and being convenient in mounting and the like.

A fire suppression system in which the water supply line is fitted with repeating arrays or groups of sprinkler heads. Each array is composed of at least two side-discharge sprinklers. The side-discharge sprinklers in each array are aimed so that their coverage areas point in opposite directions. Each side-discharge sprinkler includes a lateral heat shield. The lateral heat shield has a concave heat-concentering side that focuses radiant heat toward the sprinkler's trigger, and a convex heat-scattering side that disperses radiant heat away from the trigger. In some embodiments, the array can include one or more vertical-discharge sprinklers. The vertical-discharge sprinkler may include a heat collector to facilitate early activation of its trigger.

The invention relates to an automatic magnetic check valve, which comprises a cover body, an upper magnet, a valve body, a shaft seat, a valve, a lower magnet and a sealing ring, wherein the shaft seat is arranged on one side of the bottom of the valve body; the valve is hinged on the shaft seat; the upper magnet is arranged on the valve body; the lower magnet is arranged on the valve; the sealing ring is arranged between the valve and the valve body; and the upper magnet and the lower magnet are in a Z-plane asymmetric structure. When asymmetric magnets attract each other, an Fx component force not equal to zero is generated, the consistency of the repeated opening / closing action of the valve is greatly improved under the action of the Fx, and the valve is closed to be accurately attracted and sealed; the valve body has a high flow structure, so that an effective area of fluid flowing through the valve body is greatly improved; the valve body is hardly wound with hair and cotton and is cleaning-free; the valve can realize 90-degree opening in a circular pipeline, the drainage is not hindered and the flow velocity is high; and the overflow of sewage is prevented, polluted air, insects and cockroaches are prevented. The check valve is conveniently arranged at a sewage pipeline to replace the conventional water return bend, is suitable for sewage drainage, and is also suitable for other fluid pipelines with one-way flow requirement.

The invention discloses a using method of a drainage device for a water conservation project. The drainage device comprises a drainage channel. The drainage channel comprises a drainage device body. Afilter water inlet pipe is fixedly mounted on the inner surface of the rear end of the drainage device body, and a river closure pier is fixedly mounted on the outer surface of the rear end of the drainage device body; a river closure baffle is movably mounted on the outer surface of the upper end of the river closure pier, a sealing groove is formed in the position, close to the lower portion ofthe river closure baffle, of the inner surface in the river closure pier, and a cleaning brush is fixedly mounted on the outer surface of the side, close to the river closure baffle, inside the riverclosure pier; and a filter net is fixedly mounted on the inner surface inside the filter water inlet pipe. To sum up, the using method of the drainage device for the water conservation project has the beneficial effects that the drainage device for the water conservation project adopts the filter water inlet pipe and a drainage mechanism, the drainage effect of the device can be improved, the blockage phenomenon of the device is avoided, the number of maintenance times of the device is decreased, the structure is simple, and using is convenient.

The invention relates to a smart shower device with a disinfection and activation function. The smart shower device with the disinfection and activation function comprises adjusting devices and a shower body with a cavity structure. The adjusting devices are uniformly arranged on an outer side wall of the shower body by adopting central lines of the shower body as axles; each adjusting device comprises a sliding block and a sliding rail which are of arc-shaped structures at the same time; a concave type strip slot is formed in an inner wall of each sliding block; a convex type strip block matched with the concave type strip slot is arranged on an outer side wall of each sliding rail; a plurality of water outlets are formed on a front surface of the shower body; the lower end of the shower body communicates with a water inlet end; three filter chambers spaced by grids are arranged inside the water inlet and are respectively a primary filter chamber, a secondary filter chamber and a tertiary filter chamber from bottom to top; tourmalin ceramic balls are filled in the primary filter chamber, the secondary filter chamber and the tertiary filter chamber. According to the smart shower device with the disinfection and activation function provided by the invention, the tourmalin ceramic balls arranged in the filter chambers can emit infrared rays which have the disinfection and activation function, so that better water quality can be ensured, and the human comfort is increased.

The invention provides an intelligent dung cleaning device for a poultry house, which comprises a dung accumulation pool, a first motor and a rotating rod. The dung accumulation pool is circumferentially provided with an installation groove. The side wall of the dung accumulation pool is fixed with the first motor, and the output end of the first motor is fixed with one end of the rotating rod. The shortcomings in the prior art are overcome, the design is reasonable, and the structure is compact; through adding a second scraper, under driving of the first motor, the dung can be well scraped toa dung discharge port, and due to the bent second scraper, the dung can reach the dung discharge port extremely easily during the scraping process and is not accumulated; through adding a strip brush, under driving of the second motor, the strip brush brushes the bottom part of the dung accumulation pool back and forth, and the bottom part of the dung accumulation pool can be cleaned; and throughadding a round brush, under driving of the second motor, the round brush rotates continuously to brush the bottom part of the dung accumulation pool again, and the bottom part of the dung accumulation pool is cleaned again.

The invention provides an ocean-current power generation device. A generator, a generator shaft and an energy gathering mechanism are connected. The energy gathering mechanism is composed of a rotating shaft, a driving belt connected with the rotating shaft and vanes fixed onto the driving belt; a rolling axis of the driving belt (4) is identical to current direction of ocean currents; the vanes (1) are wing shaped; the vanes are identical with one another and in same installation relation with motion direction of the driving belt. By application of the wing principle, the vanes are allowed to acquire lifting force in ocean current to drive the generator to run. Compared with a conventional wheel-vane type energy gathering mechanism, the energy gathering mechanism provided with the single generator has larger and more flexible energy gathering range; compared with a garland-type or a paddle-wheel type and a parachute-type energy gathering mechanism, the energy gathering mechanism provided with the energy gathering mechanism cannot produce resistance with the ocean current during revolution, so that the vanes on a rotor can produce driving energy for the generator to deliver the ocean current in the whole circulation path; therefore, the ocean-current power generation device is large in energy gathering range and high in efficiency as compared with the prior art.

The invention relates to the technical field of plastic part producing and processing, in particular to an efficient heat-dissipation type blow-moulding mould. The efficient heat-dissipation type blow-moulding mould comprises an upper mould structure, a lower mould structure, cooling structures, guide post structures, guide sleeve structures, rotary structures and accelerating structures, whereincooling structures are arranged inside the upper mould structure and the lower mould structure; accelerating structures are rotatably connected inside the cooling structures; the accelerating structures are arranged, so that flow speed of water inside a mould base can be increased, and therefore, better heat-dissipating and cooling effects can be achieved inside the mould; the accelerating structures provide power through the rotary structures, and the rotary mechanisms work through extrusion of two moulds, i.e., flow speed of water inside the cooling structures is increased when the two moulds are closed, so that water flow speed can be increased while the mould works; and while the mould does not work, water flow speed is normal, so that the effect of saving water resources is achieved.

The invention discloses a drainage device for hydraulic engineering. The drainage device comprises a drainage channel; the drainage channel comprises a drainage device main body; a filter water inletpipe is fixedly mounted on the inner surface of the rear end of the drainage device main body; the outer surface of the rear end of the drainage device main body is fixedly provided with a closure pier; the outer surface of the upper end of the closure pier is movably provided with a closure baffle; a sealing groove is formed in the position, close to the lower portion of the closure baffle, of the inner surface of the interior of the closure pier; a cleaning bristle brush is fixedly mounted on the outer surface of the side, close to the closure baffle, in the closure pier; and a filter mesh is fixedly mounted on the inner surface of the interior of the filter water inlet pipe. In summary, the drainage device has the beneficial effects that the drainage device for hydraulic engineering adopts the filter water inlet pipe and a drainage mechanism, the drainage effect of the device can be improved, the blockage phenomenon of the device is avoided, the maintenance frequency of the device is lowered, and the device is simple in structure and convenient to use.

The invention relates to a device for preventing sewer clogging. The device for preventing sewer clogging is arranged between a water channel and a sewer pipe. The device for preventing sewer clogging comprises a water tank and a siphon communicated with the water tank. A water inlet of the water tank is communicated with a water outlet of the water channel. A water outlet of the siphon is communicated with a water inlet of the sewer pipe. The device for preventing sewer clogging prevents sewer clogging through a high flow rate and large flow quantity, realizes pre-collection of oil stain in the water tank, and prevents sewer pipe clogging formation. The device for preventing sewer clogging has good performances of preventing sewer pipe clogging.

The invention discloses a kind of double-vane push-and-pull ball collecting device. It comprises ball collecting barrel, pin shaft, driving shaft, driving operation device, plastic ball outlet, supervising hole, the driving shaft is fixed on the barrel, one end of the shaft connects with driving operation device, and there sets a supervising hole out of the barrel, a ball collecting mesh is fixed in the barrel, the ball collecting mesh is trumpet type, the ball collecting mesh is made up of left and right frames and the mesh board on it, the front and back of the frame is fixed on the barrel by pin shafts, the bottom of the frame is connected with the gliding block nut, the left and right universal sliding blocks covers around the driving shaft in positive and negative directions respectively, the two ends of the left and right universal sliding block nut have sliding tracks.

The invention discloses a pulse current fish repelling device which comprises a water body data collecting device, a control system, a pulse generator, an exciter, a transmitter and a sinking bottom electrode, wherein the control system comprises a switching power supply, a power supply unit, a microcontroller, a water body data display unit, a frequency regulator and a pulse width regulator. Thepulse current fish repelling device is capable of repelling different types of fish by utilizing a stepped electric field generated by the sinking bottom electrode, and can also be applied to different water bodies. By using the stepped electric field, the electric field intensity in the direction in which the fish enters the device is gradually increased, so that the fish individual escapes whenthe fish enters an unacceptable electric field during the advancement process, and a reasonable escape distance is also provided for the fish.

The invention relates to a radiating technology for laser diode end-face pumped solid laser crystals, in particular to a heat sink cooling method for series sector radial microchannel crystals of a solid laser. The solid laser comprises a laser crystal rod, and an upper metal block heat sink and a lower metal block heat sink both clamping the laser crystal rod, wherein a sector radial microchannel is arranged around a pumping end face of the laser crystal rod, and a water inlet hole and a water outlet hole form a water channel with the sector radial microchannel; the sector radial microchannel consists of an upper series sector radial microchannel layer and a lower series sector radial microchannel layer; the upper series sector radial microchannel layer is integrally welded with the upper metal block heat sink to form an upper heat sink, and the lower series sector radial microchannel layer is integrally welded with the lower metal block heat sink to form a lower heat sink. The invention provides a cooling method for the effective radiation of the end-face pumped solid laser crystals in the manner of series sector radial radiation, thereby realizing high-density heat consumption.

The invention relates to a method for constructing a deep pool shoal in a slow-flow riverway. The method comprises the following steps that 1, spur dikes are symmetrically arranged the positions nearbanks on the two sides of the riverway; 2, the shoal is arranged between the two spur dikes, and the flow surface of the shoal is of a V-shaped structure, the low end is located in the center, the high ends are located on the two sides, and the high ends are lower than the upper surfaces of the spur dikes, and the space defined by the two sides of the shoal and the spur dikes and the banks is a deep pool. 3, an upstream slope and a downstream slope are arranged on the two sides of the shoal flow surface respectively, the slope of the upstream slope is larger than that of the upstream slope, water flow in the riverway passes through the deep pool, the upstream slope, the shallow flow surface and the downstream slope in sequence. According to the method, the spur dikes and the shoal are usedfor constructing the deep pool shoal in the riverway, the structure is simple, the self-purification capacity of river water can be improved, and the biodiversity in the riverway is increased.

The invention provides a flocculating reaction device. The structure of the flocculating reaction device is as follows: a plurality of hydraulic partition plates are separately arranged at the left and right of each of a first hydraulic partition plate flocculating reactor and a second hydraulic partition plate flocculating reactor of the flocculating reaction device in a spaced manner, a plurality of flow passages are partitioned separately by the hydraulic partition plates, and all mechanical stirrers are separately arranged on corresponding flow passages; the first hydraulic partition plate flocculating reactor and the second hydraulic partition plate flocculating reactor are arranged adjacently, and a first flow passage of the first hydraulic partition plate flocculating reactor and a first flow passage of the second hydraulic partition plate flocculating reactor communicate with each other through an overflow port; liquid level sensors are separately arranged on the first hydraulic partition plate flocculating reactor and the second hydraulic partition plate flocculating reactor, and all the liquid level sensors are connected with the corresponding mechanical stirrers in the hydraulic partition plate flocculating reactors where the corresponding liquid level sensors are located. According to the flocculating reaction device, the flocculation effect is good, the adaptability to change of flow is high, the stability of the flocculation effect is high, and the energy consumption can be lowered.

The invention discloses a tin oxide crystal preparation device which comprises a reaction tank, a vortex pipe is arranged on one side of the reaction tank, a water and gas mixing tank is arranged between the reaction tank and the vortex pipe, a water tank is arranged on the other side of the reaction tank, a spiral pipe rotationally connected with the reaction tank is arranged in the reaction tank, an airbag for stirring is arranged at the lower part of the spiral pipe and is communicated with the spiral pipe, a power box is arranged above the reaction tank, the spiral pipe penetrates through the power box, and a plurality of axis wings positioned in the power box are fixed at the upper part of the spiral pipe; the tin oxide crystal preparation device further comprises a conveying pipe, a cold water pipe and a hot gas pipe are arranged on the vortex pipe, the two ends of the hot gas pipe are respectively communicated with the vortex pipe and the spiral pipe, the cold water pipe is communicated with the water and gas mixing tank, a water conveying pipe is arranged on the water and gas mixing tank, the two ends of the conveying pipe are respectively communicated with the water and gas mixing tank and the power box, a pipe orifice of the conveying pipe positioned in the power box is toward the axis wings, and an output pipe is arranged on the power box and is communicated with the water tank. The temperature and the stirring speed of the tin oxide crystal preparation device are simultaneously realized by using cold gas and hot gas of the vortex pipe, and the operation is simple.

An article of manufacture produced by a process comprising the steps of: erecting a sediment-containment structure comprising a plurality of floating boom segments; and introducing sediment into the shape formed by the sediment-containment structure. A system for building up sediment in a water-covered area comprises: a plurality of floating boom segments connected in an essentially closed shape; a sediment source depositing sediment inside the area substantially enclosed by the essentially closed shape formed by the boom segments; and a wasteweir segment disposed so as to close the essentially closed shape formed by the floating boom segments. The wasteweir segment has two posts and a removable barrier element. A method for building up land in a water-covered or water-surrounded area comprises the steps of: erecting a sediment-containment structure comprising a plurality of floating boom; and introducing sediment into the shape formed by the sediment-containment structure.

The invention relates to the technical field of coal mine geological engineering, and discloses a bottom water level monitoring device capable of avoiding well wall fracture and automatically alarming. The bottom water level monitoring device comprises a rack, wherein a sliding plate is slidably connected in the rack, the lower end of the sliding plate is fixedly connected with a pull rod, the surface of the pull rod is fixedly connected with a floating block, a balancing weight is fixedly connected to the lower end of the pull rod, movable blocks are slidably connected to the interior of the sliding plate, metal strips are fixedly connected to the side faces, close to the movable blocks, of the rack, and an electromagnetic rod is fixedly connected to the upper end, close to the sliding plate, of the rack. According to the bottom water level monitoring device, a coil is driven by fan blades to rotate, so that the electromagnetic rod is powered on, the electromagnetic rod attracts the sliding plate at the lower end, the movable blocks are connected with the metal strips on the side faces, an internal circuit is connected, and a buzzer starts to work, and therefore the effects that when water in a well bottom leaks downwards, a response can be made in time, an alarm is pulled, and workers at the well bottom are reminded are achieved.

The invention relates to a front cap spinning forming device and technology for a blast-furnace tuyere small sleeve. The front cap spinning forming device comprises a machine frame, wherein the machine frame is of a cross-shaped structure, and the machine frame comprises a base and two side seats; a first guide rail and a second guide rail are arranged on the base, and the first guide rail and thesecond guide rail are both arranged in the transverse direction. The forming technology comprises the following steps that step1, a copper cake blank is prepared; step 2, the copper cake blank is heated; step 3, the copper cake blank is placed; and step 4, the copper cake blank is subjected to strong spinning. According to the front cap spinning forming technology for the blast-furnace tuyere small sleeve, compared with a front cap stamping forming technology, the materials are saved, secondary processing is not needed, the precision can be controlled, the heat conduction of a strong spinningfront cap in a deep-cylinder shape is 30% higher than the heat conduction of a stamping front cap in a short-cylinder shape.

The invention discloses a water and soil loss prevention device for river bank vegetation recovery, which comprises an auxiliary drainage tank, a slope protection baffle block and a flushing reduction chamber, and is characterized in that the auxiliary drainage tank is arranged at the upper part of a river bank and can directly drain water at the upper part of the river bank into a river channel through a second drainage pipe; the first drainage pipe can be controlled through the electromagnetic valve to assist in drainage, the slope protection check block is arranged on the surface of the slope protection and plays a role in reducing the flowing speed of rainwater on the surface of the slope protection, the high-flow-speed water flow scouring resistance of the slope protection is improved, and the flushing reduction cavity is formed below the water surface and close to the bottom of the river bank; the flushing reducing cavity is of a cavity structure with the cross section being in a right trapezoid shape and one side open, and a first flow guide plate and a second flow guide plate are arranged in the flushing reducing cavity, so that water flow can be guided into the flushing reducing cavity, flushing of the water flow is reduced through the second flow guide plate, energy of the water flow is consumed, and the flow direction of river water is changed through generated elastic potential energy.