178results about How to "Improve spoiler effect" patented technology

The invention relates to a multi-operating mode energy-saving controlled combined type thermostatic and humidistatic air conditioning unit with a thermometal compound box body structure special for nuclear power stations. The air conditioning unit comprises a control system and a box body structure, wherein a primary-efficiency filter, a medium-efficiency filter, a surface cooler, a heater, a humidifier and a blow-off device are sequentially arranged in the box body; the front side of the primary-efficiency filter is provided with a fresh air and return air mixing section, and inlets of fresh air and return air are respectively provided with a fresh air proportioning valve and a return air proportioning valve; the control system adopts a programmable logic controller (PLC) and adopts air conditioning multi-operating mode zone control to realize the energy-saving operation of the unit; the surface cooler adopts a large temperature difference cold water heat exchanging technology and can save the investment and operation expenses of a water system; and the box body adopts a double-layer compound structure and an anti-shock device to meet the special requirements on the nuclear power stations. The invention has the characteristics of high efficiency, energy saving, good tightness, strong anti-shock capacity, safety, reliability, long service life, and the like.

The invention discloses a device for recycling heat radiated from a rotary cement kiln shell body, comprising a plurality of heat transfer covers arranged on the upper section of the rotary cement kiln shell body. Each of the external surfaces of the heat transfer covers is provided with an insulating layer, sealing equipment is arranged between the two ends of the heat transfer covers and the rotary cement kiln shell body, a sealing heat transfer cavity is formed by the inner surfaces of the heat transfer covers and the external surface of the rotary kiln shell body via the sealing equipment, the bottom of the heat transfer covers is provided with an inlet which is communicated with the heat transfer cavity, the top of the heat transfer covers is provided with an outlet which is communicated with the heat transfer cavity, the bottom of the heat transfer covers is connected to a slip fitting so as to realize the axial displacement. The sealing equipment comprises a permanent seat on the external surface of the rotary cement kiln shell body, and one side of the permanent seat is provided with a dynamic sealing ring; the bottom of the dynamic seal ring is hermetically connected to the rotary cement kiln shell body by a temperature resistant rubber I, and a self-propelling stationary seal ring is arranged between the dynamic seal ring and the head face of the heat transfer cover; the top of the self-propelling stationary seal ring is hermetically connected to the head face of the heat transfer cover by a temperature resistant rubber II, the self-propelling stationary seal ring is connected to an elastic stationary seal ring, and a sealing gland is arranged between the elastic stationary seal ring and the dynamic seal ring.

The invention provides a soymilk machine head, which is arranged on a barrel body of a soymilk machine. A crushing blade and a spoiler are arranged on a rotating shaft of the machine head, wherein the spoiler sleeves on the rotating shaft, and can rotate relative to the rotating shaft, and the crushing blade drives a food material in the barrel body to rotate; the food material drives the spoiler to rotate. According to the soymilk machine head provided by the invention, the rotating shaft drives the crushing blade to rotate at high speed, and the crushing blade which rotates at high speed drives the food material to rotate in the barrel body, accordingly, under the rotation of the food material, the spoiler absorbs the kinetic energy of part of food material to rotate along with the food material in the same direction, and the rotating speed difference between the spoiler and the food material becomes small; meanwhile, by matching of the rotation of the spoiler, the food material can be stably stirred by the spoiler, accordingly, the food material is more uniformly distributed in the barrel body, the rotation of the food material is more stable, and the disturbing effect of the spoiler is more obvious; meanwhile, the noise generated by the larger rotating speed difference between the food material and the spoiler is also reduced to better achieve the purpose of noise reduction in the soymilk machine.

An improved structure of stirrer is applicable to mixing up liquid, it is provided with a circular disc having peripherally thereof with a plurality of blades inserted therein in a mutually spaced and inclined way, and a shank of which one end is combined with the center of a surface of the circular disc; thereby, when the stirrer is using, liquid can enter from gaps between every two blades around the circular disc and discharge from an upper and a lower opening in order that liquid can be agitated and blended adequately.

The invention discloses a plate-fin type heat exchanger core and a fin structure thereof. The plate-fin type heat exchanger core comprises a plurality of partition plates and fins; each fin is supported and fixed between the two adjacent partition plates; the part between the adjacent partition plates is sealed to form a flow channel unit; the flow channel unit forms a plurality of medium flowingheat exchange channels between the adjacent partition plates; a plurality of ball convex parts/ball concave parts are arranged on the fins; and the ball convex parts/ball concave parts are provided with punched holes to form punched ball convex parts/punched ball concave parts. The core combines various advantages of the ball convex/ball concave structures and the punched structures; the fins increase the heat exchange area; the ball convex/ball concave structures improve the loading capacity of the plate-fin structure and enhance fluid turbulence, so that a flow boundary layer and a hot boundary layer are thinned; and the punched structure forms local jet flow, so that fluid mixing convection in the fin adjacent flow channels is promoted, the vortex dead zone of the ball convex/ball concave structure is reduced, and the effects of enhancing heat transfer and reducing flowing resistance are achieved.

The invention discloses a bacteria and algae collaborated method for efficient treatment of aquaculture sewage. Bacteria and algae are compounded for use in combination to treat livestock and poultrysewage. The method specifically includes: adopting autotrophic ammonia oxidizing bacteria, autotrophic nitrification bacteria and heterotrophic nitrification bacteria to convert ammonia nitrogen in livestock and poultry sewage into nitrate nitrogen, then introducing the treated sewage into an airlift columnar photobioreactor, and utilizing the microalgae with a preservation number of CCTCC NO:M 2017461 to remove nitrogen and phosphorus and perform biomass accumulation. The method has the beneficial effects that: through the synergistic action of microbial functional bacteria and microalgae, the method rapidly reduces the nitrogen, phosphorus and other pollutants in livestock and poultry sewage, shortens the hydraulic retention time, improves the microalgae biomass accumulation speed, and can acquire a large number of renewable energy sources while treating livestock and poultry sewage.

The invention discloses a heat exchanger. The heat exchanger comprises first sheet bars and second sheet bars, wherein a plurality of convex parts are arranged on the side of a first sheet face of each first sheet bar, fins are arranged between a second sheet face of each first sheet bar and a first sheet face of the second sheet bar adjacent to the first sheet bar, while no fins are arranged between the side, provided with the convex parts, of each first sheet bar and a second sheet face of the second sheet bar adjacent to the first sheet bar, and the height of the convex parts is smaller than that of the fins. According to the heat exchanger, the flow turbulent performance in a first fluid channel is improved through the fins, the flow turbulent performance in a second fluid channel is improved through the structure of the convex parts, thus low-pressure fluid can flow in the first fluid channel, and high-pressure fluid can flow in the second fluid channel.

The invention discloses a solid-liquid rocket engine combustion chamber intermediate flow disturbing device. The solid-liquid rocket engine combustion chamber intermediate flow disturbing device is suitable for solid-liquid rocket engine ground hot firing test, is applied to a center single channel and adopts a single round hole powder charging solid-liquid rocket engine. A flow disturbing plate is a single-hole round ring, the thickness of the flow disturbing plate is 10-15 mm, the ratio of the hole diameter of the flow disturbing plate to the diameter of a grain channel is 0.5-0.6, and the flow disturbing plate is arranged in the position of the 70%-80% length of a combustion chamber, divides a grain into a front section of grain body and a back section of grain body, and is placed on the wall surface of a heat insulating layer of the combustion chamber and the end surface of the grain in a closely attached mode. The flow disturbing plate device is the round hole ring with the axis of the engine as the axis and is made of high-temperature-resistant high-silicon oxygen. According to the solid-liquid rocket engine combustion chamber intermediate flow disturbing device, the specific structure size and the position in the overall structure are given, the flow disturbing effect on fuel gas is achieved, and the requirements for the structural strength and heat protection of the flow disturbing device of the engine in the working process are met.

The invention provides a soymilk machine head, which is arranged on a barrel body of a soymilk machine. A crushing blade and a spoiler are arranged on a rotating shaft of the machine head, wherein the spoiler sleeves on the rotating shaft, and can rotate relative to the rotating shaft, and the crushing blade drives a food material in the barrel body to rotate; the food material drives the spoiler to rotate. According to the soymilk machine head provided by the invention, the rotating shaft drives the crushing blade to rotate at a high speed, and the crushing blade which rotates at a high speed drives the food material to rotate in the barrel body, accordingly, under the rotation of the food material, the spoiler absorbs the kinetic energy of part of food material to rotate along with the food material in the same direction, and the rotating speed difference between the spoiler and the food material becomes small; meanwhile, by matching of the rotation of the spoiler, the food material can be stably stirred by the spoiler, accordingly, the food material is more uniformly distributed in the barrel body, the rotation of the food material is more stable, and the disturbing effect of the spoiler is more obvious; meanwhile, the noise generated by the larger rotating speed difference between the food material and the spoiler is also reduced to better achieve the purpose of noise reduction in the soymilk machine.

The invention discloses a turbulence device used in a tubular heat exchanger. The turbulence device comprises at least two vertex generators and a fixed shaft which is arranged in a heat exchange tube of the tubular heat exchanger. The fixed shaft extends in the axial direction of the heat exchange tube. The fixed shaft is sleeved with each vertex generator in a clearance fit mode so that the vertex generators can move in the axial direction of the fixed shaft under the action of medium flow. An elastic component is installed between every two adjacent vertex generators. The deformation direction of each elastic component is the axial direction of the fixed shaft, so that axial locating of the vertex generators is realized through the elastic components. In this way, by means of selecting material parameters of the elastic components, namely when the flow velocity of the medium flow can be changed, the axial positions of every two adjacent vertex generators are adjusted in time, so that the turbulence device always has a good turbulence effect at different medium flow velocities, and therefore the turbulence performance of the turbulence device is improved. The invention further discloses the tubular heat exchanger comprising the turbulence device.

The invention discloses a static mixer for a selective catalytic reduction flue gas denitration system. The static mixer is mounted in a flue of the denitration system, and comprises a plurality of mixing units in the same structure, wherein each mixing unit is formed by jointly splicing eight identical right-angle set square structures around the same central point; the eight identical right-angle set square structures are divided into four groups; each group comprises two right-angle triangle structures connected via right-angle sides; the adjacent groups are completely connected via bevel sides of the right-angle set square structures respectively; and central points of the mixing units are correspondingly located right above circle centers of nozzles of an ammonia spray grid of the flue respectively. According to the static mixer, the mixing degree of ammonia and flue gas can be improved significantly; the uniformity of a mole ratio of ammonia to nitrogen is improved; smaller pressure loss of the system is generated; short-distance mixing is achieved; and the static mixer has the characteristics of obvious burbling effect, compact overall structure, convenience in processing and mounting and the like.

The invention discloses an ammonia spraying device of an SCR (selective catalyst reduction) flue gas denitration system. The ammonia spraying device comprises a plurality of input pipes (1) and a plurality of groups of uniformly distributed ammonia spraying units, wherein the input pipes (1) are uniformly arranged in a flue; the ammonia spraying units are connected with the input pipes (1) and are uniformly distributed; a spoiler (6) is arranged above each ammonia spraying unit; each ammonia spraying unit comprises a closing type spray pipe (4) and a branch pipe (3), and each branch pipe (3) is used for connecting the corresponding input pipe (1) and the corresponding closing type spray pipe (4); a spray nozzle (5) is arranged on each closing type spray pipe (4); each spoiler (6) comprises a casing and a plurality of blades arranged on the casing, and each blade (10) is of an arc-shaped trapezoidal structure. The ammonia spraying device has the advantages that by arranging the spoilers in the ammonia spraying device, flue gas can be fully and comprehensively mixed with ammonia gas in short distance, so that the additional arrangement of a static mixer is not needed, and the cost is low; by arranging the ammonia spraying device, the reverse flowing of the flue gas into an ammonia spraying pipeline is prevented.

The invention discloses a wind electricity tower spoiler, which consists of a plurality of spoiler units, wherein the section of each spoiler unit is of a sealed three-edge solid structure or a three-edge thin-wall structure with an opening end; the plurality of spoiler units are connected in sequence to form one strand of continuous spiral line; in addition, the spiral line is fixed on the outerwall of the tower through the spoiler units positioned on the end parts; the bottom surface of each spoiler unit is fit to the outer wall of the tower; or the plurality of spoiler units form one strand of continuous spiral line, the continuous spiral line is arranged on the outer wall of the tower, i.e., each spoiler unit is fixed on the outer wall of the tower, and in addition, the bottom surfaceof each spoiler unit is fit to the outer wall of the tower; and two adjacent spoiler units are arranged at an interval. The spoiler can adapt to the shape follow-up technology of different external diameters of the whole tower, has a good spoiling effect and has a long service life.

The invention discloses a device for desorbing sulfur trioxide in the front of an air preheater. The device comprises a plurality of groups of alkali injection units and flue gas mixing units which are arranged in a one-to-one correspondence manner; each alkali injection unit comprises an alkali pool, a pump and an atomizing spray nozzle which are sequentially connected; an alkali absorbing agent is stored in each alkali pool; the atomizing spray nozzles are arranged in a front flue of the air preheater; each flue gas mixing unit comprises a substrate flat plate and fins; each substrate flat plate is arranged on the downstream of the corresponding atomizing spray nozzle in the front flue and is arranged along the direction of mainstream flue gas; the fins are arranged on two sides of the substrate flat plate at intervals. According to the device disclosed by the invention, the alkali injection units are arranged in the front flue of the air preheater and spray the alkali absorbing agents in flue gas; turbulence mixing is performed by using the flue gas mixing units; the sulfur trioxide is desorbed by using the strong alkali characteristic of the alkali absorbing agents, and the desorption rate can reach 80 percent or above; by adjusting the atomizing spray nozzles and the flue gas mixing units, the mixing uniformity of the flue gas and the absorbing agent is guaranteed, the length of a reaction zone is shortened, and the service life of a heat storage element of the air preheater is prolonged.

The invention discloses a welded plate type heat exchanger, which comprises a frame and support legs, wherein the upper part and the lower part of the frame are provided with an end closure respectively provided with a medium II inlet or outlet and an air exhaust port or a drain, the middle part of the frame is provided with a movable plate and a fixing plate, the upper part and the lower part of the movable plate are provided with a collection box respectively, and the collection box is welded with a medium I inlet or outlet; an upper end closure, a lower end enclosure, the movable plate and the fixing plate are in sealing connection with the frame by connecting square flanges, gasket seals and bolts so as to form a heat exchanger box body, the inner part of the heat exchanger box body is provided with a heat exchange plate bundle, the heat exchange plate bundle is formed by the stacking of plate groups formed by the welding of the heat exchange plates, medium I flow passages are formed in the plate groups, and medium II flow passages are formed between the adjacent plate groups; the heat exchange plates are made by the punching of carbon steel or stainless steel; and the both surfaces of the heat exchange plates are provided with aluminizing diffusion layers. The heat exchanger has the advantages of higher bearing operation temperature and better corrosion resistance.

The invention discloses a detachable plate shell type heat exchanger. Pipe boxes are arranged at the two ends of a shell, two pipe plates are arranged between the pipe boxes and the shell and fixed together by flanges, a plate bundle consisting of parallel plate sheets is arranged between the pipe plates on the two sides, the two ends of each plate sheet are fixed on the two pipe plates on the two sides by plate pipes and communicated with the pipe boxes, a shell pass inlet and a shell pass outlet are formed on the shell, plate pass inlets and plate pass outlets are formed on the pipe boxes, the plate sheets comprise flow passage cavities and the plate pipes, the sections of the flow passage cavities are oblate, honeycomb structures are formed in the flow passage cavities, the two ends ofeach flow passage cavity are welded with the plate pipes which are communicated with the flow passage cavity, the plate pipes are inserted into the pipe holes of the pipe plates, and the outer surfaces of the plate pipes and the pipe holes are sealed by internal pipe plate compacting sealing rings and external pipe plate compacting sealing rings; the plate sheets comprise long plate sheets and short plate sheets, so that a shell pass has a multi-shell pass structure; and flow passages among the plate sheets are separated and supported by pull rods. The detachable plate shell type heat exchanger has high heat exchanging performance and is convenient to disassemble, wash, replace and assemble.

A kind of radiator includes several radiating fins which are set parallel with each other and hot pipe which is set through the radiating fins, flow channel for air flow is formed between adjacent radiating fins, a through hole for the hot pipe is set on every radiating fin, several heaves are set around the through hole on the radiating fin, said several heaves are arranged to shrinkage type. Said heaves can increase radiating area of radiating fin, at the same time it can guide flow and change flow field of air flow, increase burbling effect of radiating fin, radiating efficiency can be increased.

The invention discloses an engine mixer which comprises a mixer body and a mixer tube core, wherein the mixer body adopts a hollow structure of which two ends are opened and comprises an air inlet end, a mixed gas outlet end and an inner cavity; the inner wall of the air inlet end and the outer wall of the mixer tube core are matched in an inserting manner; a natural gas inlet pipe is connected onto the outer wall of the air inlet end and is communicated with the mixed gas outlet end through the inner cavity; the mixed tube core adopts a hollow structure of which one end is opened; an opening end of the mixed tube core is an air inlet; the air inlet is communicated with the inner cavity through a plurality of through holes formed in the tube wall of the mixer tube core. According to the engine mixer, natural gas flow beams are dispersed by using greater momentum of air flow beams, so that the mixing uniformity of natural gas and air is improved, and the flowing resistance is reduced.

The invention discloses a fractal discontinuous rib structure suitable for cooling the interior of a turbine blade, and belongs to the technical field of cooling of high-temperature turbine blades ofgas turbines. Fractal discontinuous ribs are arranged in a cooling channel in the blade, and each fractal discontinuous rib comprises a plurality of fractal periods uniformly distributed in the lengthdirection of the bottom wall surface of the cooling channel; each fractal period is composed of four rows of discontinuous ribs, and each row of discontinuous ribs is composed of discontinuous ribs and discontinuous areas; in each fractal period, the number of the discontinuous fins and discontinuous areas of each row of discontinuous ribs is gradually increased along the airflow direction; the blocking rate of fluid can be reduced through the discontinuous ribs, and pressure loss in the channel is reduced; secondly, transverse vortexes can be generated in the discontinuous areas of the discontinuous ribs, the turbulence effect on airflow is enhanced, mixing of main flow and boundary layer fluid is enhanced, the turbulence degree of the fluid is increased, and therefore heat exchange is enhanced; and thirdly, the transverse vortexes induced by the discontinuous areas appear in the downstream areas of the ribs, so that backflow areas behind the ribs are reduced, and heat exchange is enhanced.