137results about How to "Change flow state" patented technology

In the tiny gap (4) between the underside radial bearing part (13) and the top surface thrust bearing part (15) of the shaft (3), thrust plate (6) and bearing sleeve (1) In the wider flow channel (4a) surrounded by the circumferential corner part (1c), chamfering is performed at the inner circumferential corner part (1c) of the bearing sleeve (1), wherein the wider flow channel (4a) is in the radial direction of rotation The width is formed wider than that of the communication hole (16) located below the wider flow passage (4a) in the radial direction of rotation, thereby smoothing the flow of the lubricating fluid (5) from the communication hole The holes (16) flow into the wider flow channel (4a).

The invention provides a heat-exchange type ascending tube and a coke oven. The heat-exchange type ascending tube comprises an inner tube for conveying raw coke oven gas; both ends of the inner tube are respectively communicated with a coke oven carbonization chamber and a crossover tube. The heat-exchange type ascending tube also comprises an outer tube. The outer tube is arranged on the outer side of the inner tube; a cooling accommodating cavity is formed between the outer tube and the inner tube; the outer tube is provided with an input port and an output port which are communicated with the cooling accommodating cavity; a gas-state cooling medium for recycling heat in the raw coke oven gas goes into the cooling accommodating cavity from the input port and then flows out of the cooling accommodating cavity from the output port; the inner side of the inner tube is provided with a spiral guide rod arranged along the axial direction of the inner tube. The heat-exchange type ascending tube not only can reduce the temperature of the raw coke oven gas and recycle a part of heat in the raw coke oven gas, but also can reduce the usage amount of ammonia water and decrease the recycling cost of the raw coke oven gas.

The invention discloses a heat tracing turbulent layer fluidized drag-reducing flow conveying pipe and a method thereof. The heat tracing turbulent layer fluidized drag-reducing flow conveying pipe is formed by a plurality of single-section conveying pipes and a master controller. Each single-section conveying pipe mainly includes an arched pipe, a fluid heat tracing pipe, an insulating layer, a pipe wall heat tracing pipe, a pipe upper cover, a fluid temperature monitoring device, a wall temperature monitoring device and a temperature controller. The heat tracing turbulent layer fluidized drag-reducing flow conveying pipe aims at existing heating conveying of high-viscous and congealable fluid, combines the existing skin effect heat tracing technology and the fluid drag reducing control technology by aid of the design of the round conveying pipe arched fluid interface, and achieves control on the fluidized flow state of the fluid turbulent layer in the pipe near the fluid string surface on the basis of the congeal removing and viscosity reducing effects of the skin effect heat tracing technology by maintaining the temperature difference of the wall surface of the arched pipe and the fluid in the pipe. Thus, pressure drop loss of fluid during conveying can be further reduced, the conveying efficiency can be improved, and energy saving and consumption reducing can be promoted.

The invention belongs to the technical field of gas-liquid two-phase measurement and relates to a gas-liquid two-phase flow swirl phase separation type capacitor moisture content measuring device. The device comprises a swirl phase separation unit and a capacitor measuring unit, wherein the swirl phase separation unit is located on the upper part of the device and comprises an outer pipe wall and spiral blades fixed in the outer pipe wall, and a space between the spiral blades and the outer pipe wall is named a first phase medium flow space; the capacitor measuring unit is located on the lower part of the device and comprises a metal pipe wall and an inner electrode, the metal pipe wall is taken as an outer electrode, the inner electrode is fixed in the metal pipe wall and externally covered with an insulating layer, a space between the metal pipe wall and the insulating layer is named a second phase medium flow space, and the two phase medium flow spaces are communicated with each other; and an opening connected with a fluid tangential inlet pipeline is formed in the outer pipe wall, the tangential angle of the fluid tangential inlet pipeline is the same as the spiral rising angles of the spiral blades, and therefore, fluid can enter the swirl phase separation unit along the tangential angle.

The disclosed fluid magnetization tube comprises: a magnetic tube with axial-magnetized magnetic rings with opposite polarity between neighbor ones, space rings of non-ferric-magnetic material and an annular tube; a high-permeability guide magnetic tube coaxial with the magnetic tube and owned a flow channel, or another magnetic tube with two magnetic rings in one section with same height and opposite magnetized direction; some members with straight or curve axis for location, fixing and guiding flow; two cove boards on both ends contained arc channels of flat shape or cylinder face to locate the tubes on both radial and axial directions. The opposite magnetization device comprises a plurality of magnetization tubes parallel inserted in the shell, and two end cap grooves to connect near tubes in series or parallel or mixture. The magnetization system uses said magnetization device and normal pump and power gear device for fluid cycle magnetization, which has high efficiency, simple structure, variable forms, small volume, light weight, and low cost.

The invention relates to an ultra-high-speed turbulence boundary layer drag reduction control method, a simulation method, a simulation device, computer equipment and a storage medium. The ultra-high-speed turbulence boundary layer drag reduction control method comprises the steps that array type stripe holes are formed in the local wall face, forming a turbulence boundary layer, of an ultra-high-speed aircraft in the flow direction, and when the aircraft flies at an ultra-high speed, hot air is blown to the wall face from the stripe holes through a wall face hot air blowing device arranged onthe surface of the ultra-high-speed aircraft; and drag reduction control is performed on the turbulence boundary layer of the ultra-high-speed aircraft. The simulation method comprises the steps thata numerical simulation model of superspeed boundary layer fluid is constructed, incoming flow conditions are set, transition is induced, and a superspeed turbulence boundary layer is generated; hot air blowing control is applied to the wall surface through the equidistant stripe holes; simulation calculation is carried out on the numerical simulation model according to the set grid information, and the effectiveness and superiority of the ultrahigh-speed turbulence boundary layer drag reduction control method based on speed and temperature coupling are analyzed.

The invention discloses a cyclone dust collector with a spiral air inlet pipe, and belongs to the cyclone dust collector field. The cyclone dust collector comprises an air inlet pipe, a cyclone, an air outlet pipe, a spiral stream guidance blade, a conical dust collector and a dust outlet, the air inlet pipe is arranged on one side of the cyclone, the spiral stream guidance blade is fixed on the air outlet pipe and extend into the cyclone, the conical dust collector is connected to the lower bottom of the cyclone and is communicated with the cyclone, the dust outlet is arranged at the lower end of the dust collector, the air inlet pipe is designed in a spiral pipeline structure, traditional straight blow type air inlet pipes are replaced, one end of the air inlet pipe is an air inlet, and the other end is fixed onto and communicated with the outer wall of the cyclone. According to the mode, the cyclone dust collector with the spiral air inlet pipe can change flow conditions of airflows inside the cyclone, possibilities of secondary dust raising and dust rising circulation phenomena of the conical portion are effectively reduced, centrifugal force of dust particles is increased because the rotation speed of airflows inside the dust collector is increased, fine particles which cannot be removed by traditional cyclone dust collectors can be removed, and the cyclone dust collector has high dust particle separation efficiency.

The invention relates to the field of nickel-chromium alloy furnace tubes for cracking furnaces, and discloses a nickel-chromium alloy furnace tube for a cracking furnace and a preparation method thereof. The nickel-chromium alloy furnace tube comprises a furnace tube, an intensified heat transfer member arranged in the furnace tube and an oxidizing film formed on the inner surface of the furnace tube, wherein the oxidizing film contains an oxide of one or more elements such as Cr, Mn, Ni, Fe, Al and Si. According to the nickel-chromium alloy furnace tube for the cracking furnace provided by the invention, an inert protective film with relatively high heat stability is formed on the inner surface of the furnace tube, so that a catalytic coking phenomenon can be inhibited or alleviated; meanwhile, the intensified heat transfer member is arranged in the furnace tube, so that the flow condition of a fluid can be changed, the coefficient of heat conduction can be improved, and free radical coking and polycondensation coking can be reduced.

The invention relates to a novel energy-saving aluminum electrolytic cell with a chamfered grooved cathode. The aluminum electrolytic cell is characterized in that: a cathode carbon block adopted by the electrolytic cell is a chamfered and grooved novel carbon block; the upper part of the cross section of the carbon block is a trapezoid; the upper surface of the middle part of the longitudinal section of the carbon block is provided with a through rectangular tank; and the whole surface of the cathode on the bottom of the electrolytic cell is in the form of a plurality of dovetail grooves orthogonal with a rectangular groove. The novel energy-saving electrolytic cell can not only bring about evener current density distribution of an aluminum liquid, the cathode carbon block and a steel rod, but also improve the even distribution of a magnetic field, reduces the stress produced by the magnetic action on the aluminum liquid, effectively reduces the flow velocity of the aluminum liquid, changes the flow state of the aluminum liquid, changes the turbulent flow into the laminar flow, reduces the fluctuation of an electrolyte and the aluminum liquid in the cell, and consequently reduces the polar pitch and the pressure fall in the cell and realizes energy conservation and consumption reduction of electrolyzation.

The invention provides a three-level rotational flow structure of an afterburner head. A large-ranged recirculation zone can be generated by the structure in an afterburner, so that flame burning is stabilized, and meanwhile, the pressure loss can be reduced, the fuel oil atomization degree in the afterburner is reinforced, burning efficiency is improved, and the wall face can be effectively cooled; by reasonably setting the rotary angle of a whole flow supporting plate, an airflow reversely flows in a rotational-flow mode, so that shear force between fuel oil and air is increased, and the fuel oil atomization degree is improved; the flowing direction of the airflow is not suddenly changed, and thus flowing resistance is small; and an airflow rotational flow is subjected to wall-adherent movement, so that an air film is formed between the afterburner wall face and a burning zone, and the cooling effect of the afterburner wall face is guaranteed. The three-level rotational flow structure of the afterburner head has the advantages that the difficulty, caused by the over-high airflow speed in the afterburner, of igniting and maintaining stable burning of flame can be effectively improved, and the smaller pressure loss is achieved; and meanwhile, the fuel oil atomization level can be improved, and further efficient burning can be ensured.

The invention discloses an energy-saving high efficiency rapid condenser. The rapid condenser is characterized in that a shell of the condenser is internally provided with a combined type heat exchange tube (30), the combined type heat exchange tube (30) is composed of an outer pipe (6) with larger diameter and an inner pipe with small diameter (7), and the outer pipe (6) is slightly shorter than the inner pipe (7); the pipe wall of the outer pipe (6) is twisted into a spiral shape, and the pipe wall of the inner pipe (7) is twisted into the spiral shape which is opposite to the outer pipe (6); the outer pipe (6) is sleeved on the exterior of the inner pipe (7), and the two ends of the outer pipe (6) are respectively stretched from the inner pipe (7); the two ends of the outer pipe (6) are respectively stretched into thru holes of a second septum (3) and a third septum (4) in the shell (1), and the outer pipe (6), the second septum (3) and the third septum (4) are in hermetic seal connection; and the two ends of the inner pipe (7) are respectively stretched into thru holes of a first septum (2) and a fourth septum (14), and the inner pipe (6), the first septum (2) and the fourth septum (14) are connected in a sealing mode.

The present invention provides high strength and high efficiency fluid magnetizing tube, magnetizing device and magnetizing system, and belongs to the field of fluid magnetizing technology. The fluid magnetizing tube includes a magnetic tube, a magnetic conducting tube, and a locating and guiding element to form one or several fluid channels and has straight or curved axis. The magnetic tube includes a magnetic ring, an isolating ring of non-ferromagnetic material and a duct; the magnetic conducting tube is high permeability duct or one other magnetic tube; and the end plates possess fluid channel. The magnetizing device includes a casing and several magnetizing tubes connected serially and/or in parallel. The magnetizing system has magnetizing device, conventional pump and power device to perform circular fluid magnetizing. The present invention has high strength axial and radial magnetic field and high fluid magnetizing efficiency.

The invention relates to a reverse helically-coiled tube type cooler and belongs to the technical field of convection heat exchange. An oil inlet (1-1) and an oil outlet (1-2) are arranged on the two ends of a box (1), a water inlet (1-3) and a water outlet (1-4) are arranged on the two ends of the side surface of the box (1) respectively, a shell (2) is arranged on the outer side of the box (1), a plurality of layers of reverse helically-coiled tube bundles (3) are concentrically arranged in the box (1); the helical winding directions of the odd number layers and the even number layers of the reverse helically-coiled tube bundles (3) are opposite; the flowing state of fluid is changed, and thus strong turbulence effect is formed. Moreover because the length of the reverse helically-coiled tube type cooler is 4-6 times as long as the length of the shell, heat exchange medium inside and outside the heat exchange pipe bundles can be subjected to complete heat exchange. The pressure bearing capacity is high, the structure is compact, the heat stress can be slowly released, the heat exchange coefficient is large, the heat exchange efficiency is high, and the cooler has considerable flexibility, adaptability and reliability.

The invention discloses a vertical type powdered coal drying preheating device based on partition wall heat exchange. The vertical type powdered coal drying preheating device comprises an air inlet, an air discharge pipe, heat exchange cavities, a shell and a thin wall plate. The vertical type powdered coal drying preheating device is characterized in that the shell is arranged perpendicular to the ground; two ends of each heat exchange cavity are respectively provided with the air inlet pipe and the air discharge pipe, at least two heat exchange cavities are both arranged in the shell, a material channel is reserved between the heat exchange cavity and the heat exchange cavity, and the outer surface of the heat exchange cavity is welded on the thin wall plate. The vertical type powdered coal drying preheating device based on partition wall heat exchange, which is disclosed by the invention, is simple in structure and can be used for increasing the radiating area, changing the flow state of a coal material and enhancing the heat exchange effect.

The invention discloses a multi-cold water pipe and multichannel heat absorption open-type communicating heat exchanger and a manufacturing process thereof and is used for changing cold water into hot water to take a bath in families. Porous inner plates are respectively and fixedly welded in both ends of more than two heat supply pipes; end sealing plates are fixedly welded outside both ends of each heat supply pipe; cold water heat collection distribution chambers are formed by the porous inner plates and the end sealing plates; each two heat supply pipes are welded to be communicated through a heat supply pipe communicating straight pipe; more than two cold water pipes are interpenetrated into each heat supply pipe; both ends of each cold water pipe and the porous inner plates are welded to be communicated in the manner of opening; a cold water communicating pipe penetrates through the heat supply pipe communicating straight pipe, and both ends of the cold water communicating pipe and the porous inner plates in the adjacent two heat supply pipes are welded to be communicated; a cold water inlet/outlet and the cold water heat collection distribution chambers of side pipes at both sides of the heat supply pipes are welded to be communicated; and a warm air inlet/outlet and the side pipes at both sides of the heat supply pipes are welded to be communicated. According to the multi-cold water pipe and multichannel heat absorption open-type communicating heat exchanger disclosed by the invention, the heat absorption area is increased by fully utilizing an effective heat source through multi-dividing wall heat absorption and stepped heat transfer, therefore, the heat absorption is rapid, and the heat exchange efficiency that the temperature is changed in the manner of gradient is high.

The invention discloses a positive osmosis membrane component for slowing down external concentration polarization and membrane pollution. A positive osmosis membrane divides a permeation device bodyinto a raw material liquid side corridor and a suction liquid side corridor, the connecting part of the positive osmosis membrane and the permeation device body is sealed by a sealing ring; and impellers are arranged in the raw material liquid side corridor and the suction liquid side corridor. The raw material liquid side corridor is provided with a raw material liquid side water inlet and a rawmaterial liquid side water outlet. The suction liquid side corridor is provided with a suction liquid side water outlet and a suction liquid side water inlet. A raw material liquid enters the raw material liquid side corridor through the raw material liquid side water inlet, flows out from the raw material liquid side water outlet, drives the impeller to rotate in the flow process, a suction liquid flows out from the suction liquid side water outlet, and drives the impeller to rotate in the flow process, the liquid flow state is changed, and the liquid mixing speed is accelerated. The positiveosmosis membrane component has the beneficial effects that the rotation of the impellers changes the fluid flow state, thereby slowing down the polarization phenomenon of the external concentration difference, improving the membrane flux and reducing the membrane pollution.

The invention discloses an oriented pyrolysis reactor based on ray heating, and relates to a pyrolysis reactor. The reactor device comprises a semi-coke outlet (1), a heat insulation and reflection layer (2), a ray emission source (3), a ray heating chamber (4), a pyrolysis sample inlet (5), a pyrolysis gas outlet (7) and a pyrolysis product channel (6) which is arranged in the ray heating chamber; and ray heating is used to achieve rapid and efficient pyrolysis of low-order fossil energy, renewable wastes and other materials. A gas flow path for the pyrolysis gas to flow from a high-temperature zone to a low-temperature zone is formed. The reactor has prominent characteristics when used, achieves rapid heating by using rays, achieves rapid heat transfer through improving the gas directionby internal members, reduces secondary reactions, and facilitates the improvement of the yield and the quality of tar through the filtering bed effect of centralized centering output of the gas. Thereactor has the advantages of reliability and easiness in design, reasonable structure, suitableness for various pyrolysis materials, and good industrial amplification prospect, and can be widely promoted and applied.

The invention relates to an online optimization and adjustment method and system for a steam supply quality of annular steam heat-supply network. The method comprises the steps that S1, an adjustment valve is additionally arranged inside the annular steam heat-supply network; and S2, the opening degree of the adjustment valve is controlled to adjust the flow distribution of steam inside the annular steam heat-supply network so that adjustment can be achieved to reach the steam quality of each heat user in the annular steam heat-supply network system. As the adjustment valve is additionally arranged in the annular steam heat-supply network, the ideal opening degree optimization scheme of the adjustment valve is obtained through an intelligent searching algorithm, and the opening degree of the adjustment valve is adjusted by an automatic control system, so that the flow distribution and flow state of the steam in the annular steam heat-supply network are changed, optimization of the steam supply quality of the annular steam heat-supply network under different working conditions is achieved, the defect that long time is wasted as a traditional searching algorithm adopts enumeration calculation and comparison is also overcome, and the computational efficiency is improved.

The invention relates to a fabricated coast wave-proof dam and in particular relates to a fabricated coast wave-proof dam which is applicable to coast retaining wall and guard dam with strong wind and high waves and resistant to wave impact. The fabricated coast wave-proof dam is of the structure that a plurality of prefabricated concrete dam block bodies are mutually plugged and piled up in a shape of stairs to a design height, wherein the concrete dam blocks are classified into four types A, B, C and D. The fabricated coast wave-proof dam has the advantages that all the concrete dam blocks are respectively prefabricated in a factory, transported to a construction site and then positioned and mounted, concrete does not need to be poured on the spot, mounting is convenient and efficient, environmental influence is small, the prefabricated concrete dam blocks are subjected to fixed size standardized production in the factory, production efficiency is high, product quality is good, and manpower resource is greatly saved; and the fabricated coast wave-proof dam can effectively release and relieve a wave impact force, collapsing force of wave to a dam is resolved, safety is enhanced, and service life of the wave-proof dam is greatly prolonged.

The invention provides a double-turbulent-flow combined oil flinger. The double-turbulent-flow combined oil flinger is composed of a flinger body, a flow divider, special-shaped turbulent-flow blades, bubble distribution turbulent-flow columns and opposite punching holes. The flow divider is of a cover cap structure with a lateral opening and is installed on an oil inlet. The special-shaped turbulent-flow blades are evenly distributed at the outlet of the flow divider in the circumferential direction, and channels between the blades limit the flow direction of working media. The bubble turbulent-flow columns are different in size and are distributed at the rear ends of the turbulent-flow blades. And the opposite punching holes are alternately distributed in the central wall surface of the oil flinger. Fuel oil enters the flow divider from an oil inlet, then is forked and turned at the position of the turbulent-flow blades, and collides for multiple times in the area of the turbulent-flow columns to break a liquid film, and finally, a better atomization effect is achieved at a opposite punching nozzle. And moreover, the fuel oil has a cooling effect on a high-speed rotating shaft and can also be preheated, so that the combustion efficiency of an engine using the oil flinger is relatively high.