112results about How to "Increased turbulence" patented technology

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention discloses equipment and a method for preparing spray condensation microcapsules, and relates to the technical field of spray condensation microcapsule preparation, the equipment comprises a melting homogenizing kettle and a condensing tower, a spray head is arranged in the condensing tower, and a movable spray mechanism used for enabling the spray head to move circumferentially and swing back and forth at the same time is mounted on the condensing tower. Through the arrangement of the movable spraying mechanism, the spraying head can spray material liquid drops in the condensing tower in a back-and-forth swinging manner while moving circumferentially, so that the material liquid drops can be uniformly dispersed in a wider area and can be in contact with more cold air, local supercooling or superheating is avoided, and a more uniform cooling effect is obtained; meanwhile, through the matched arrangement of the spiral blades, cooling airflow can spirally flow and be uniformly distributed, the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, gas-liquid exchange is more sufficient, finally, it can be ensured that each material liquid drop can be sufficiently cooled, and the embedding efficiency and the quality of microcapsules are effectively improved.

The invention belongs to the technical field of heat exchange equipment, and particularly relates to a double-layer coil pipe type multi-stage heat exchanger and a heat exchange method thereof.The double-layer coil pipe type multi-stage heat exchanger comprises multiple heat exchanger bodies which are sequentially connected in series, each heat exchanger body comprises an outer cylinder, an inner cylinder, a first-layer coil pipe and a second-layer coil pipe, and each outer cylinder is arranged on the outer wall of the corresponding inner cylinder in a sleeving mode and provided with a fluid inlet and a fluid outlet; a fluid inlet and a fluid outlet which are communicated are formed in the inner cylinders, the fluid outlet of the upper-stage inner cylinder is communicated with the fluid inlet of the lower-stage inner cylinder, and the first-layer coil pipe and the second-layer coil pipe are both arranged in an annular cavity formed by the outer cylinder and the inner cylinders.

The utility model relates to the field of water conservancy and hydropower engineering, in particular to a novel combined energy dissipater. The novel combined energy dissipater comprises a combined step located on a drainage section, the combined step is formed by connecting a W-shaped step and a V-shaped step in the direction perpendicular to water flow, a trapezoidal energy dissipation pier is arranged on the horizontal plane of each step of the combined step, and the vertical face of each step of the combined step is folded inwards to form a concave angle. The bottom of the combined step is connected with the water inlet end of the stilling pool, at least one row of opposite impact type stilling piers are arranged in the stilling pool in the transverse direction, and a plurality of wedge-shaped tail piers are arranged at the tail of the stilling pool and combined with the tail sill. According to the novel combined energy dissipater, a more comprehensive energy dissipation facility is provided, single energy dissipation is converted into multi-element energy dissipation, the better energy dissipation effect is achieved, meanwhile, the work amount is reduced, and the combined energy dissipater is more convenient and simpler.

The invention relates to the technical field of electromagnetic heaters, and discloses a tank-type explosion-proof electromagnetic heater, comprising a tank body and an explosion-proof junction box installed on the outside of the tank body, wherein the tank body comprises, from outside to inside, a heat preservation layer, an electromagnetic coil and a heating cylinder, one end of the heating cylinder is fixedly connected with a feed port, the outside of the heat preservation layer is fixedly installed with a discharge port connected with the heating cylinder, and a plurality of conical plates are fixedly installed on the inner wall of the heating cylinder. The invention fixes a plurality of conical plates on the inner wall of the heating cylinder, and penetrates through a circular hole on one side of the conical plate, and the conical plate is directly connected to the inner wall of the heating cylinder. Through heat conduction, water flow contacting with the conical plate can also be heated, thereby increasing the heated area of ​​the fluid and rapidly raising the temperature of the fluid. Moreover, water passing through the circular hole can increase the flow rate of water and increase the degree of turbulence, thereby increasing the degree of mixing of the heated fluid with the low-temperature fluid and improving the heat transfer efficiency between the fluids. At the same time, in conjunction with stirring, the water flow in the heating cylinder can be heated more evenly.

The invention discloses a high-temperature turbulent environment particle ignition combustion testing device based on rotational flow flame stabilization, and belongs to the field of combustion testing. The burner is composed of an external rotational flow flame stabilizing device, a central premixing burner, an adjustable turbulence intensity pore plate and a central powder supply pipe. High-temperature and high-speed methane turbulence flames are generated through the central premixing burner, flame stabilization is conducted on the high-temperature and high-speed turbulence flames through the external rotational flow flame stabilization device, and the turbulence intensity of the flames is improved. A high-speed turbulent flow field and a high-temperature flue gas range are constructed through high-temperature and high-speed methane flames, combustion of aluminum particles in the turbulent flow field is achieved, and the combustion rule of the aluminum particles in a complex flow field is researched and tested. The turbulence intensity of high-temperature and high-speed turbulence flame is changed by changing the pore density and the pore diameter of the adjustable turbulence intensity pore plate, and the gas ratio in the central premixing combustor, so that simulation of different fuel gas oxygen enrichment degrees, turbulence intensities and flame temperatures is realized, and test analysis of different turbulence intensities on the combustion process of condensed phase particles is realized.

The invention relates to the technical field of heat exchangers, and particularly discloses an energy-saving plate-fin heat exchanger which comprises a box body, a first fin plate group, a second fin plate group, a partition plate and a mounting table, a first edge sealing plate and a second edge sealing plate are arranged on the partition plate, a first driving mechanism is arranged on the first edge sealing plate, a second driving mechanism is arranged on the second edge sealing plate, and the mounting table is arranged on the box body. A waste heat utilization mechanism is arranged in the mounting table; the first driving mechanism can adjust the length of the heated channel, and the second driving mechanism can adjust the length of the heating channel, so that the flow velocity of the heated liquid and the heating liquid is increased, the turbulence degree of the heated liquid can be enhanced by increasing the flow velocity, a thermal boundary layer is destroyed, the heat transfer coefficient is increased, and the heating efficiency is improved. Therefore, the heating effect on the heated liquid is improved, the liquid outlet temperature of the heated liquid can be controlled more accurately, the waste heat utilization mechanism can further utilize waste heat carried by the heating liquid output from the box body, and the energy utilization rate is increased.

The invention relates to a self-adaptive spiral flow power generation device with damping vortex lines, and belongs to the technical field of hydroelectric power generation equipment. The device comprises a base fixedly arranged on a riverbed or seabed base; the stand column is of a cylindrical structure and is arranged in the center of the base, and right-handed damping vortex lines are annularly arranged on the incident flow surface of the stand column at equal intervals; the stand column is connected with a flow guide cover through a bearing platform, and the flow guide cover is of a variable-diameter round pipe structure and is coaxially provided with a flange, a contraction section, a diffusion section and a tail edge in the water flow direction. Threaded fins are arranged on the inner wall of the flow guide cover in the circumferential direction, and the generator is also located in the flow guide cover. A rudder is arranged outside the fairing, the whole rudder is of a wing-shaped structure and comprises a front rudder and tail rudders, all the tail rudders play a synergistic role through a connecting rod mechanism, the geometric attack angle of the fairing is automatically adjusted under the main flow velocity potential difference, the fairing is made to directly face the main flow all the time, and therefore the power generation efficiency and the overall performance of the device are improved. The device is suitable for being applied to water bodies of oceans, inland lakes, reservoirs and parks, and power is generated through water body flowing.

The utility model relates to the technical field of reaction kettle, concretely to a stainless steel reaction kettle for chemical production with high -efficient mixing, including base and reaction kettle body, the top of base is provided with mixing subassembly, the mixing subassembly includes with the fixed connection of first motor of the top of base, the output fixed connection of first motor has first rotary lever, utilizes mixing subassembly to make the raw materials in reaction kettle can change the movement approach in the process of stirring and mixing and enhance the mixing effect unceasingly, through the cooperation and setting of first rotary lever, connecting rod, flow guide cylinder and flow guide hole realize the structure of rotatable flow guide cylinder and flow guide hole to change the flow direction of raw materials unceasingly and flow alternately while stirring rod stirs and mixes raw materials, make the material form turbulent flow in the reaction kettle, avoid traditional single flow direction, through the baffle suppression two -axis rotation causes the circumferential flow, forced fluid to axial and radial diffusion, further enhance turbulent flow.

The utility model belongs to the technical field of heat exchangers, and particularly relates to a lean and rich liquid double-flow-channel heat exchanger which comprises a shell, a shell cavity is formed in the shell, and first liquid flows in the shell cavity. At least one baffle plate group is arranged in the shell cavity, the baffle plate group comprises a plurality of baffle plates, the baffle plates and the inner wall of the shell cavity are obliquely arranged, and through holes are formed in the surfaces of the baffle plates; the guide pipe is arranged in the shell cavity and penetrates through the through hole, so that the spiral cavity is formed in the guide pipe, the second liquid spirally flows in the spiral cavity, the flowing path of the second liquid in the guide pipe is increased, the heat exchange area of the second liquid in the guide pipe is increased, and therefore the heat exchange performance of the pipe side is improved. Meanwhile, the second liquid flowing spirally can generate certain centrifugal force, so that heat exchange between the second liquid and the inner wall of the guide pipe is more sufficient, and the heat exchange efficiency is further improved.

The utility model discloses a new energy battery pack cooling structure, which relates to the field of battery pack cooling and heat dissipation, and comprises a bottom plate and a battery pack, the upper end of the bottom plate is fixedly connected with a cooling plate, the battery pack is arranged at the upper end of the cooling plate, and the right side of the battery pack is provided with a liquid cooling mechanism. Heat conducting plates are fixedly connected to the four side faces of the battery pack, a plurality of sets of cooling fins are fixedly connected to the outer sides of the four heat conducting plates, first fans are arranged on the lower sides of the cooling fins on the left side and the right side, and second fans are arranged at the lower ends of the cooling fins on the front side and the rear side. According to the battery pack heat dissipation device, working heat of the battery pack can be quickly conducted out, meanwhile, heat dissipation treatment is conducted on the heat dissipation fins through the fan, the heat dissipation efficiency of the heat conduction plate and the heat dissipation fins is improved, and meanwhile, after cold air with the low temperature moves upwards along with the fan and makes contact with the heat dissipation fins, the heat dissipation efficiency of the heat dissipation fins is further improved.

The utility model belongs to water treatment technical field, specifically discloses a perforated folded plate for sedimentation tank and the sedimentation tank of oblique installation perforated folded plate. The perforated folded plate is the plate -like structure of undulating extension and includes at least three folded plate tops of undulating top end and three folded plate bottoms of undulating bottom end, and the folded plate top of perforated folded plate is adjacent to the folded plate bottom and is provided with a plurality of folded plate holes on or close to the folded plate top. The water inlet and the water outlet of the sedimentation tank are separately arranged in the lower part and the upper part of the pool body, a folded plate support is fixed above the water inlet in the pool body, a plurality of aforementioned perforated folded plates are obliquely arranged on the folded plate support in the pool body, the folded plate top of the perforated folded plate faces upwards and the folded plate bottom faces downwards. The perforated folded plate top of the utility model is provided with the folded plate hole, and the sewage can flow upwards through the folded plate hole, which not only can increase the sedimentation area, but also can realize automatic sludge discharge, has the characteristics of simple structure, wide application range, high sedimentation efficiency and automatic sludge discharge.

This utility model discloses a heat exchanger and an air conditioner. The heat exchanger includes: fins; heat exchange tubes, which are inserted into tube holes and through which refrigerant flows; the fin unit includes: a flat region arranged circumferentially along the tube hole; a corrugated region surrounding the flat region, with at least one central corrugation opposite to the flat region along the length of the fin; and a transition region obliquely connected between the flat region and the corrugated region; wherein the diameter of the flat region is D, and the sum of the wavelengths of at least one central corrugation is λ, and D and λ satisfy the relationship: 0.9D≤λ≤1.1D. This increases the contact area between the fins and the heat exchange tube, thereby improving the heat exchange capacity between the heat exchange tube and the fins. The small slope formed by the intersection of the flat region and the central corrugation prevents residual water formation and creates a continuous drainage channel, allowing condensate to drain smoothly during evaporation and improving the heat exchange capacity during evaporation.

The utility model relates to the technical field of heat exchangers, in particular to a multi-layer staggered fin type heat exchanger which comprises a heat exchanger body, a first fluid box is arranged on the heat exchanger body, rotary fluid boxes are symmetrically connected to the two ends of the first fluid box, second fluid boxes are evenly arranged in the first fluid box at intervals, and the second fluid boxes are symmetrically connected to the rotary fluid boxes. The two ends of the second fluid box are each fixedly provided with a sealing insertion opening, the sealing insertion openings are tightly connected with the first fluid box and the rotary fluid box in an inserted mode, upper heat exchange fins and lower heat exchange fins are fixed to the upper end and the lower end of the second fluid box respectively, and the upper heat exchange fins and the lower heat exchange fins at the adjacent positions are arranged in a staggered mode. According to the multi-layer staggered fin type heat exchanger, the heat exchange fins are designed to be of a wave-shaped structure, the adjacent heat exchange fins on the upper layer and the lower layer are arranged in a staggered mode, the heat exchange area can be effectively increased, meanwhile, the structure is compact, meanwhile, turbulent flow is increased, and the heat exchange effect is ensured.

The invention relates to the technical field of armored heating cables, and provides a high-stability armored heating cable which comprises a heating wire and an insulating sleeve which is arranged outside the heating wire and forms an insulating wire core. When the positioning sleeve absorbs heat, heat energy can be guided into the heat storage cavity through the heat conduction rod, so that the expansion material is promoted to expand, the plug plate is pushed to enable cooling liquid to flow to the water flow groove for cooling, and the armored heating cable is prevented from losing efficacy at the extreme temperature; through the spiral water flow grooves, the contact area of cooling liquid and the positioning sleeve can be increased, turbulent flow is increased, the flowing uniformity is improved, and the heat exchange efficiency is improved; the temperature is reduced through the heat absorption dissolution reaction, the spare inner balloon is further arranged in the fractured micro balloon, and the cooling effect continues to be provided or the same time double cooling effect is achieved when the temperature rises next time; the insulating wire cores can be stabilized, the overall structural stability of the cable is improved, meanwhile, the excellent heat conduction performance is provided, and the stability and safety of the electrical performance are ensured.

The utility model relates to tinned sheet production technical field especially relates to a kind of adjustable pickling tank for tinned sheet production line, including pickling tank and the adjustable support component of several settings along its length direction;Adjustable support component includes screw handle, screw rod, movable load block, hollow roll, first liquid guide slip ring, first communicating pipe, second liquid guide slip ring, second communicating pipe and suction pump.The utility model drives screw rod rotation by rotating screw handle, drives movable load block to move up and down in vertical sliding slot, to adjust the relative height of two hollow roll.This design allows operator to adjust the height of guide band gap according to strip thickness or process requirement, change the bending path of strip in tank, extend or shorten pickling time.Through the collaborative adjustment of multiple adjustable support components, wave shape or ladder shape trend can be formed, to adapt to pickling requirement of different plate shape.

This utility model relates to the field of vaporizer technology, specifically a heat exchange vaporization and pressure regulation integrated device, comprising: two frames, with uniformly distributed mounting plates fixedly connected to the inner side of each frame; a liquid inlet pipe at the bottom of one frame and a gas outlet pipe on one side of the frame; a heat exchange structure disposed between the two frames; and a pressure regulating structure disposed on one side of the heat exchange structure. By setting the heat exchange structure, the medium can flow in a spiral shape by setting guide fins inside the heat exchange tube, increasing the flow path and thus prolonging the contact time between the medium and the heat exchange tube, improving the heat absorption time of the medium. Simultaneously, by setting protrusions, the surface roughness of the guide fins can be increased, increasing the turbulence during the medium flow process, thereby improving the heat exchange effect.

The application provides a heat exchange tube and a heat exchanger. The heat exchange tube comprises a tube body (1), an inner tooth (2) is arranged in the tube body (1), the inner tooth (2) comprises a first inner tooth unit (21) and a second inner tooth unit (22) which are different in height and / or shape, the first inner tooth unit (21) and the second inner tooth unit (22) are arranged at intervals, and a fluid passage (3) is formed between adjacent first inner tooth units (21) and second inner tooth units (22). The heat exchanger has the heat exchange tube. The application solves the problems of excessive flow resistance of fluid, excessive pressure loss and limited heat exchange efficiency improvement caused by the continuous thread line structure in the prior art.

The utility model provides a water phase homogenizing tank for honey mustard sauce production, which relates to the technical field of water phase homogenizing tanks and comprises a tank body and a shaft rod, a hollow interlayer is arranged on the inner wall of the tank body, an electric heating device capable of heating the inside of the tank body is arranged in the hollow interlayer, an auxiliary device is arranged at the top end of the tank body, and the shaft rod is arranged on the shaft rod. The auxiliary device comprises a half gear and a horizontal gear, the horizontal gear is fixed at the top end of the tank body through a rotating shaft, the shaft rod can drive the pressure plate to move up and down in the tank body when rotating by means of meshing of the half gear and the horizontal gear, pressure is applied to the interior of the tank body through the pressure plate, and the pressure plate is driven to move up and down. According to the water-phase homogenizing tank, the flowing state of fluid in the tank body is changed, so that the relative movement between liquid layers is more violent, the turbulence degree is enhanced, the dissolving process is accelerated, layering of materials in the stirring process is avoided as much as possible, and the effect and efficiency of the water-phase homogenizing tank during material treatment are greatly improved.

The utility model discloses a heat conduction pipe provided with a heat dissipation core, and belongs to the technical field of heat conduction and heat dissipation. The heat conduction pipe provided with the heat dissipation core comprises a pipe body, a plurality of heat dissipation fins are arranged on the outer side of the pipe body, connecting pipes are installed at the two ends of the heat dissipation fins and the two ends of the pipe body, and connecting discs are installed on the outer sides of the connecting pipes. The heat dissipation mechanism comprises a center shaft, a heat dissipation core is installed on the outer side of the center shaft and is of a spiral structure, the outer side of the heat dissipation core is fixedly connected with the inner side of the pipe body, the multiple heat dissipation fins are distributed at equal intervals and are in a wave shape, the heat dissipation fins and the pipe body are integrally formed, and multiple flow guide holes are formed in the surface of the heat dissipation core; according to the utility model, the contact area and the retention time of a heat transfer medium and the heat dissipation core can be effectively increased, the transfer efficiency of heat in the pipe body is greatly improved, and the heat dissipation pipe has higher practical value.

The present application belongs to the field of environmental protection engineering construction technology, especially a hydrogen fluoride washing device, aiming at the operation of hydrogen fluoride washing tower, because the waste gas is not fully contacted with lye, and hard crystals are easily formed during the reaction, attached to the filler and tower wall, resulting in the blockage of the filler, the increase of system pressure drop, the increase of fan energy consumption, and the need for manual cleaning, which exists safety risk and affects the washing efficiency, the following scheme is proposed, including a washing tower body, an air inlet is formed on the outside of the washing tower body, and an air inlet pipe is fixedly connected inside the air inlet, an air outlet is formed on the top of the washing tower body. The hydrogen fluoride washing device disclosed by the present application has the beneficial effects of automatically removing the crystals in the tower by rotating spraying and brushing and scraping components, and periodically extruding the filler by using a pressure plate, which can shake off the crystals, enhance the turbulence to improve the purification efficiency, and realize automatic continuous operation, avoiding the high-risk manual cleaning.

The application provides a lithium battery step utilization energy storage device, and relates to the field of energy storage equipment.The lithium battery step utilization energy storage device comprises a base, a lithium battery cabinet arranged on the base, and a solar panel arranged above the lithium battery cabinet, and further comprises a rainwater collecting and heat dissipation system.The rainwater collecting and heat dissipation system comprises a rainwater collecting tank, a water-cooling heat dissipation assembly, and a driving assembly.The rainwater collecting tank is arranged below the solar panel, the top of the rainwater collecting tank is connected with the solar panel to collect rainwater, and the rainwater collecting tank is rotatably arranged.The water-cooling heat dissipation assembly is arranged on the lithium battery cabinet.When the temperature of the lithium battery abnormally rises, the system can automatically start within tens of seconds, and the stored rainwater is rapidly poured into the heat dissipation assembly, the water has a large heat capacity, and the heat dissipation assembly can effectively and rapidly absorb heat, so that the temperature rise of the lithium battery is effectively and rapidly inhibited, the chain reaction of thermal runaway is broken, and valuable time is gained for fault treatment.

This invention relates to the field of aero-engine technology, disclosing a combustion assembly and an aero-engine. The invention includes: a flame tube; an evaporator tube comprising a main pipe and several branch pipes, one end of the main pipe forming an evaporator tube inlet, the branch pipes corresponding to the other end of the main pipe, and the ends of the branch pipes away from the main pipe forming several evaporator tube outlets, which are located within the flame tube; and a fuel supply structure connected to the evaporator tube inlet. This invention, by arranging the branched evaporator tubes in a blood vessel-like pattern on the flame tube, increases the probability of fuel breaking up upon impact with the wall under the action of the branched structure, resulting in better fuel atomization. Simultaneously, because the branched evaporator tubes have a larger contact area with the hot wall surface, they absorb more heat, thus allowing the fuel to be heated more fully, thereby evaporating more fuel and ultimately improving combustion efficiency.

The utility model discloses a kind of convenient to clean's Undaria pinnatifida centrifugal cleaning device, including support box, outer cylinder and cleaning inner cylinder, the top of support box is provided with bearing table, the central position of bearing table is provided with outer cylinder, the inside of outer cylinder is rotatably installed with cleaning inner cylinder by rotating seat, and the center of outer cylinder bottom is provided with the conical tooth one of fixed connection with rotating seat, the side of support box is installed with servo motor, the output shaft of servo motor extends to the inner wall of support box and is installed with the conical tooth two of intermeshing with conical tooth one. The utility model drives conical tooth two and conical tooth one to engage by servo motor, drives cleaning inner cylinder to rotate, so that Undaria pinnatifida is evenly distributed under the action of centrifugal force, further improves the cleaning effect. The spray head evenly installed at pipe bottom can be all-around, dead-angle-free to Undaria pinnatifida for spray washing, ensure that every part can be fully cleaned.

The application discloses a kind of ammonia catalytic combustion system and combustion control method, its system includes combustion chamber, catalyst chamber, air chamber and feed pipe;Combustion chamber upper end is equipped with flue gas outlet, lower end surface is fixedly connected bearing plate;Catalyst chamber is installed in the inside of combustion chamber, and the inner wall of combustion chamber and the outer wall of catalyst chamber are enclosed to form combustion space;Catalyst bed is arranged in the inside of catalyst chamber, and a plurality of injection holes are formed in side wall;The inside of air chamber is air cavity, and air inlet is formed in lower end;The bearing plate is penetrated and formed with multiple groups of air flow holes;The feed pipe is inserted into air cavity from the bottom center of air chamber, vertically extends to the top of catalyst chamber, and the top outlet of feed pipe and the top cover between the top of catalyst chamber are reserved ventilation gap.The beneficial effects of the present application are that: combustion chamber, catalyst chamber, air chamber coaxial integrated nested structure, without independent external cracking device, external hydrogen supply system, whole machine height integration, reduce hardware investment and operation cost.

The utility model discloses an MIM (metal injection molding) turbocharging blade, which relates to the technical field of turbocharging blades and comprises a connecting seat, a group of blades are fixedly connected to the annular side surface of the connecting seat, two reinforcing ribs are fixedly connected between the group of blades, a group of grooves for turbulent flow are formed in the surface of each reinforcing rib, and a fixing rod is fixedly connected to the lower surface of the connecting seat. A connecting shaft is arranged on the lower surface of the fixing rod, the annular side face of the fixing rod is sleeved with a threaded ring in a threaded mode, the grooves in the surfaces of the blades can disturb airflow, the airflow forms a specific flow state on the surfaces of the blades, and the change of the flow state can increase the turbulence degree of the airflow and promote mixing of boundary layers. When the airflow flows through the blades, the airflow can flow in a mode of being attached to the surfaces of the blades, separation of the airflow on the surfaces of the blades and generation of vortexes are reduced, air resistance is reduced, the aerodynamic efficiency of the blades is improved, and then the turbocharging effect is enhanced.

The utility model discloses a disposable filtering membrane bag, which comprises a shell and a filtering assembly, the filtering assembly comprises a liquid inlet piece, a liquid permeable piece and a filtering layer, the liquid inlet piece and the liquid permeable piece are in sealing fit, and the filtering layer is clamped and positioned between the liquid inlet piece and the liquid permeable piece. The liquid inlet piece is provided with a liquid inlet and a liquid outlet which are communicated with the liquid inlet side of the filtering layer, and the liquid permeating piece is provided with a liquid permeating opening communicated with the liquid outlet side of the filtering layer. The utility model aims to effectively avoid pollutant residues caused by repeated use, reduce the risk of cross contamination, save the cleaning and sterilizing time and reduce the maintenance cost.

The invention provides a coal-fired boiler ammonia-doped combustion compatible matching system based on radiation characteristic compensation, which relates to the technical field of boiler combustion and comprises an ammonia-doped combustion operation characteristic database construction module, a real-time operation optimization module and a performance evaluation and self-optimization module. According to the method, the ammonia-doped combustion operation characteristic database is constructed, then whether the boiler performance parameters are recorded or not is judged based on the key boiler parameters, and ammonia-doped strategy dynamic adjustment and wall temperature safety regulation and control are carried out based on the ammonia-doped combustion operation characteristic database and the boiler performance parameters. Finally, when the fuel enters the coal-fired boiler, the mixing condition of ammonia and coal is evaluated, whether the fuel mixing strategy is optimized or not is judged, meanwhile, the oxygen content condition of the coal-fired boiler is monitored and adjusted, the position of high-temperature flames in the boiler is adjusted and controlled through flexible grading of the ammonia / coal fuel, matching of heat transfer distribution in the boiler and the coal-fired working condition is achieved, and the coal-fired boiler is obtained. The ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is improved, and the problem that the ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is low is solved.

The utility model relates to a water quenching pool. The device comprises a tank body, a stirring mechanism, an aeration mechanism and a circulating cooling system, the stirring mechanism is installed in the tank body through a support, the stirring mechanism comprises a stirring shaft, stirring blades and a motor, the stirring shaft is rotatably installed on the support in the vertical direction, the stirring blades are installed on the stirring shaft in the axial direction of the stirring shaft, and the stirring shaft can be driven to rotate through the motor; the aeration mechanism is mounted at the bottom of the tank body, and air can be injected into water through the aeration mechanism, so that the cooling uniformity of the casting is improved; the tank body is further connected with a circulating cooling system, and the temperature of water in the tank body can be reduced through the circulating cooling system. According to the scheme, the uniformity of the water temperature in the pool can be improved, a heat insulation steam film is damaged during water quenching, water makes continuous contact with the surface of the casting, and the water quenching effect is guaranteed.

A high-efficiency cold hydrogenation fluidized bed reactor is characterized by comprising a lower head, a cylinder and an upper head; a material inlet is arranged at the bottom of the lower head, and a gas distributor is arranged above the material inlet; a mixture of silicon tetrachloride and hydrogen enters from the material inlet and is uniformly distributed through the gas distributor; a silicon powder inlet, a silicon powder outlet and a plurality of bubble breakers are arranged above the gas distributor. By symmetrically arranging guide vanes, the airflow forms an "eight" symmetrical direction flow in a single grid block and forms a rotating flow between multiple grid blocks; the reverse arrangement of the guide vanes of the upper and lower bubble breakers makes the bubbles form a rotating cutting when passing through the grid block, which can effectively reduce the diameter of the bubbles and prevent the gas from re-agglomerating into bubbles along the vertical direction after breaking; meanwhile, the residence time of the material can be increased, and the turbulent flow degree of the material in the reactor can be increased, so that the flow field in the cold hydrogenation fluidized bed reactor can be improved, and the conversion efficiency of trichlorosilane can be improved.