37results about How to "Separation of control" patented technology

The invention discloses a wing structure with flow control and separation control of laminar flow. A plurality of A micropores are arranged at the front end of the vertical center line of the upper wing surface of a wing, and are neatly arranged in lines and rows to form an inspiration zone; a plurality of B micropores are arranged at the back end of the vertical center line of the upper wing surface of the wing, and are neatly arranged in lines and rows to form an air blowing zone; a communicating channel in the inspiration zone and the air blowing zone is called an air flow channel, namely, an inlet of the air flow channel is communicated with the inspiration zone, while an outlet of the air flow channel is communicated with the air blowing zone; the air flow channel is arranged in the wing; the air flow channel consists of a front air flow channel, a middle air flow channel and a back air flow channel, wherein, the middle air flow channel is in an elliptic shape; an inspiration pump is arranged in the middle air flow channel; the front air flow channel and the back air flow channel are designed into a flaring shape and are oppositely arranged. The wing of the invention can delay the transition of a bounding layer from lamina flow to turbulent flow by a control method for adjusting the capacity of blowing and inspiration so as to reduce the frictional resistance on an object surface, and can delay the flow separation so as to improve the stall performance of wing profile.

This invention discloses a fan turbine casing inletting wind from two sides including a front cover plate, a back cover plate and a circular middle shell connecting the two, a front air-inlet and a back air-inlet are set on them separately, and the projection of the center of the front one on the plane where the back cover places is coincident with that of the back one characterizing that a curved panel projecting downward is connected between the down edges of the two plates to shield the middle shell, so smoke can be led to the front and back air-inlets smoothly.

The invention relates to a wind and dust resisting method for an open stacking site of bulk materials, a wind and dust resisting net and the application thereof. The method comprises the following steps: a concrete base is built around the material stacking site; a support steel structure is fixed on the concrete base; the support steel structure is provided with net leaves of the wind and dust resisting net; a main flow wind surface is provided with wind resisting net leaves, and other secondary flow wind surfaces are provided with dust resisting net leaves; the height at which the net leaves are arranged is more than the stacking height of the material stack; the opening ratio of the net leaves is 20 percent to 50 percent and the like. 1 to 3 rows of wind resisting net leaves in the middle of the main flow wind surface are provided with a turnover mechanism. Net holes are long holes or elliptic holes, one side of the net hole is punched into a flanging guide fin which has a certain angle and has guide function. The boundary layer separation, the vortex and the permeation flow are eliminated or reduced effectively, the angle of the dust resisting net can be regulated according to wind directions; and the effect of resisting dust, especially secondary blowing dust can be improved greatly. The invention can be widely applied to the open stacking site of bulk materials in ports, coal mines, coal fired power plants, etc.

The invention discloses a 1 / 2 type tandem-blade type transonic speed centrifugal impeller, which comprises an inducer consisting of a front row of blades and a guide wheel consisting of a back row of blades, wherein the front and the back rows of the blades have three-dimensional distorted shapes and are divided, staggered and overlapped with one another. The centrifugal impeller is characterized in that the number ratio of the front row of the blades to the back row of the blades is 1:2. In the centrifugal impeller, the front row of the blades are arranged with low consistency and the back row of the blades are arranged with high consistency so that the effective through-flow area is enlarged and the blockage flow is increased; and the evenness of the flow at the outlet of the impeller is improved so that the wake losses and the shock losses between the impeller and a diffuser are reduced, the efficiency of the whole stage is improved, and the surge margin is enlarged.

The polygelatin peptide injection is prepared with gelatin of ox bone, pig bone, etc. and through dissolving, hot degradation in controlled condition, cross-linking with non-toxic cross-linking agent, mixing with electrolyte, adsorption, clarification and stepped filtering to separate cross-linked spherical molecule. During the preparation, the molecular weight of the cross-linked matter is well controlled.

The invention discloses a direct liquid level boundary indicator, which is mainly formed by sequentially connecting and assembling a sensor casing, a boundary floater, a liquid level floater, a mounting flange and a transmitter casing into a whole. When the direct liquid level boundary indicator is in use, the sensor casing is provided with a sensor through connection, and then the he direct liquid level boundary indicator is put into mixed liquid of oil and water to measure an oil-water boundary.

The invention discloses a novel roller compacted concrete full pipe chute vertical transportation technology. Utilizing the full piping principle and the concrete gravity action can maintain the chute to be full piping at any time. Due to adopting the full piping enclosed transportation, the technology can effectively control the aggregate separation and decrease the loss of VC value. The invention comprises the design idea, the design, assembly and operation of the full piping chute, an upper and lower concrete storage tank, and a feeding and discharging concrete radial gate. The invention shows that adopting the roller compacted concrete full pipe chute vertical transportation technology to the roller compacted concrete vertical transportation is feasible, the construction technology is more economic, simple and easy assembled and disassembled, and can be widely popularized in the project according to the actual condition.

The invention discloses a split 5G communication cabinet, which includes a first cabinet, wherein a second cabinet is disposed at one end of the first cabinet; a third cabinet is disposed at one end of the second cabinet; a plurality of uniformly distributed first connection mechanisms are disposed between the first cabinet and the second cabinet; a plurality of uniformly distributed second connection mechanisms are disposed between the second cabinet and the third cabinet; a plurality of movable partition mechanisms are disposed in each of the first cabinet, the second cabinet and the third cabinet; one end of each partition mechanism is provided with a control mechanism for controlling the fixation of the partition mechanism; one end of the second cabinet is provided with a heat dissipation mechanism; one end of the first cabinet is provided with a roller shutter mechanism; the other end of the roller shutter mechanism is disposed at the other end of the third cabinet; one side of the roller shutter mechanism is provided with a labor-saving mechanism for increasing the input rotation speed. The split 5G communication cabinet has the beneficial effects that the partition mechanisms inside the cabinet of the present invention can be adjusted in position and can be moved according to the actual height of the electronic equipment to achieve a purpose of maximizing the use of theinternal space of the cabinet and to improve the practicability of the split 5G communication cabinet.

The invention discloses a numerical prediction method for the size of bubbles in a gas-liquid multiphase pump, and the method comprises the following steps: 1, obtaining the final shapes of an impeller and a guide vane through the three-dimensional inverse problem design of the gas-liquid multiphase pump; 2, establishing a three-dimensional geometric model of the gas-liquid multiphase pump according to the step 1; 3, according to the geometric model in the step 2, carrying out full-flow-channel hexahedron structure grid division, and improving the grid quality by adopting different types of topological structures; 4, establishing a bubble size prediction model which comprises a basic control equation, a turbulence model and a bubble equation; 5, based on the bubble size prediction model inthe step 4, setting boundary conditions and solving parameters by adopting simulation calculation of computational fluid dynamics CFD, and carrying out numerical prediction on the bubble size and thegas-liquid two-phase flow field in the multiphase pump; and 6, carrying out post-processing analysis on the numerical calculation prediction in the step 5 to obtain a bubble size change rule in the impeller and the guide vane of the multiphase pump and gas-liquid two-phase flow field information.

The invention discloses an artificial stone. The artificial stone is prepared mainly from mineral powder, stone powder, pigment, resin, an accelerant and a curing agent. The artificial stone is simple in production process, and prepared by grouting, pouring, moulding, curing and demoulding without high-temperature calcination and is low in energy consumption. Compared with ceramic and a natural stone, the prepared artificial stone has the advantages of light weight, environment protection, good flame retardant property, no radiation, relatively good processability and the like, and can achieve batch production; different pigments can be doped in the artificial stone producing process according to different requirements to adjust the colors of stones so as to produce artificial stones with different colors and textures.

The invention relates to a magnetic anchoring system realizing separation and combination of built-in gripping tongs for magnetic control laparoscopic surgery. The magnetic anchoring system comprisesthe built-in gripping tongs, operation tongs and an in-vitro anchoring device, wherein the built-in gripping tongs comprise a hollow sleeve rod, a first permanent magnet, an elastic plate, a first spring, a non-damage tongs clamp head and the like; the operation tongs comprise an operation sleeve rod, a built-in sleeve rod, an operating rod, a second permanent magnet, a second spring and the like;the in-vitro anchoring device comprises a cylindrical anchoring magnet and an anchoring magnet shell, and is used for pulling the built-in gripping tongs to move in the abdominal cavity in vitro. According to the magnetic anchoring system realizing separation and combination of the built-in gripping tongs for the magnetic control laparoscopic surgery, the permanent magnet is arranged at the headend of the operation sleeve rod, the permanent magnet is also arranged at the tail end of the built-in gripping tongs, so that the combination and separation of the built-in gripping tongs can be conveniently controlled, a push rod is arranged in the operation sleeve rod, so that the head end of the elastic plate is controlled to grip the tissue.

The invention discloses a kitchen garbage crushing device. The kitchen garbage crushing device comprises a box. The top wall of the box is provided with a feed cavity with an upward opening. The leftsidewall of the feed cavity is provided with a gripper. A connecting rod extending backwards is rotatably mounted on the front and rear walls of a rotating groove. The connecting rod is fixedly connected with a partition plate in the rotating groove. The partition plate is connected with the bottom wall of the rotating groove through a supporting spring. A filter cavity communicating with the feedcavity is arranged on the lower side of the feed cavity. A crushing cavity with a beveled bottom wall is arranged on the lower side of the filter cavity. The crushing cavity communicates with the filter cavity through a transition cavity. The bottom wall of the crushing cavity is provided with a drainage outlet extending downwards to penetrate through the box, and a filter screen is arranged at the drainage outlet. The left sidewall of the crushing cavity is connected with a discharge cavity penetrating through the box.

The invention discloses a wing structure with flow control and separation control of laminar flow. A plurality of A micropores are arranged at the front end of the vertical center line of the upper wing surface of a wing, and are neatly arranged in lines and rows to form an inspiration zone; a plurality of B micropores are arranged at the back end of the vertical center line of the upper wing surface of the wing, and are neatly arranged in lines and rows to form an air blowing zone; a communicating channel in the inspiration zone and the air blowing zone is called an air flow channel, namely,an inlet of the air flow channel is communicated with the inspiration zone, while an outlet of the air flow channel is communicated with the air blowing zone; the air flow channel is arranged in the wing; the air flow channel consists of a front air flow channel, a middle air flow channel and a back air flow channel, wherein, the middle air flow channel is in an elliptic shape; an inspiration pump is arranged in the middle air flow channel; the front air flow channel and the back air flow channel are designed into a flaring shape and are oppositely arranged. The wing of the invention can delay the transition of a bounding layer from lamina flow to turbulent flow by a control method for adjusting the capacity of blowing and inspiration so as to reduce the frictional resistance on an objectsurface, and can delay the flow separation so as to improve the stall performance of wing profile.

The invention discloses a wind engine volute of Europe-type kitchen ventilator, which can adsorb wind via two surfaces. Wherein, the edge of front cover plate (1) is formed by a straight line (AB), several arcs (BC, CD, DE, EF, FG, GH), a straight line (GH), several arcs (HJ, JK) and straight lines (KL, LA); the edge of back cover plate (2) is formed by a straight line (A'B'), several arcs (B'C, C'D', D'E', E'F', F'G, G'H'), a straight line (GH'), several arcs (H'J', J'K') and straight lines (K'L', L'A'); the ratio between the radius of edge (JK) at the volute tongue of front cover plate (1) and the edge radius of edge (J'K') at the volute tongue of back cover plate (2) is 8-18.5. Compared to present technique, the invention has different curves at the edges of front and back cover plats, to control the separation of airflow when passes through the volute to confirm high efficiency, and reduce the rotary noise.

The invention discloses an optical tweezers device with adjustable laser beam intensity. The optical tweezers device comprises a laser power supply, a laser device, an optical fiber and a microscope;the laser power supply is connected with the laser device, the laser emitted by the laser device is propagated through the optical fiber, and the laser propagated by the optical fiber is refracted toa dimming plate arranged in a lens cone through a refractive plate arranged in the microscope lens cone, and is propagated to an objective lens through the dimming plate, thereby forming optical tweezers by converging in front on the objective lens to shoot to particles or cell rooms on an objective table; an image sensor is arranged in the lens cone, and the image sensor is connected with a display through an image processor. The optical tweezers device disclosed by the invention is simple and practical in structure, capable of realizing the precise capturing, conveying and screening and likeoperations on the particles or the cells, and the intensity of the optical tweezers can be flexibly adjusted.

The invention belongs to the field of organic synthesis, and discloses a synthesis method of an alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compound, which comprises the followingsteps: converting an isoquinoline compound into a high-activity imine salt intermediate, and carrying out addition reaction on the high-activity imine salt intermediate and a cyano source to obtain the alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compound. The invention is simple and practical to operate, mild in reaction condition and high in yield and purity of the obtainedproduct. The invention is suitable for synthesis of isoquinoline compounds, and is especially suitable for synthesis of alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compounds.

The present invention relates to a column temperature controlling high borosilicate glass interlayer chromatography column, wherein the upper end of a chromatography column body is provided with a material inlet, a sand core is arranged inside the chromatography column body, the lower end of the chromatography column body is provided with a material outlet pipe, the material outlet pipe is provided with a material outlet control valve, the diameter of the material outlet pipe is less than the diameter of the chromatography column body, a jacket layer is arranged on the outer periphery of the chromatography column body, the outer periphery of the chromatography column body is completely surrounded by the jacket layer, a cavity is formed between the jacket layer and the chromatography column body, the jacket layer is provided with a carrier inlet and a carrier outlet, and the temperature of a heating agent is maintained at the required temperature T DEG C during the chromatography process so as to continuously supply heat for the filler in the chromatography column body and the elution solvent. According to the present invention, with the column temperature controlling high borosilicate glass interlayer chromatography column, the column separation column temperature can be well controlled, the non-room temperature separation of the temperature sensitive specific component can achieved, the separation efficiency of the soluble components in the hot solvent can be improved, and the column temperature controlling high borosilicate glass interlayer chromatography column are widely used in the column chromatography separation process requiring the column temperature control in the fields of chemistry, chemical industry and pharmacy, and has promotion values.

The invention relates to a blade, a centrifugal fan and electrical equipment. The thickness of the blade is gradually increased and then gradually decreased from one end of a tail edge 12 of the bladeto one end of a front edge 11 of the blade, and the thickness of the tail edge 12 of the blade is larger than 1.5 mm. The centrifugal fan comprises an impeller 3 and a plurality of blades arranged onthe impeller 3, wherein the plurality of blades are evenly distributed in the circumferential direction of the axis of the impeller 3, and the tail edge 12 of each blade is located on the outer diameter circle of the impeller 3. The blade, the centrifugal fan and the electrical equipment have the effects of high flow, low noise and high efficiency, meanwhile, the injection molding strength of theblade can be improved, and large-batch injection molding production of the blade is facilitated.

The invention discloses a toughening modification preparation method of benzoxazine, relates to the technical field of composite materials. The method solves the defects of insufficient toughness and poor film-forming property of the existing benzoxazine, and comprises the following steps: adding 1, 3-bis (4-aminophenoxy) benzene, a benzoxazine resin monomer and formaldehyde into a glass bottle, and adding N-methyl pyrrolidone as a solvent to obtain a mixed solution; stirring the mixed solution at room temperature until the mixed solution is completely dissolved, filtering and pouring onto a glass plate; curing the mixed solution poured on the glass plate in the step 2 at 50-80 DEG C for 6-12 hours, curing at 180-200 DEG C for 2-6 hours, and naturally cooling to obtain a polyhexahydrotriazine / benzoxazine condensate film; wherein the modified benzoxazine cured product keeps good thermal performance, the mechanical property of benzoxazine is remarkably improved, and the problem that the benzoxazine is poor in film-forming property is solved.

The invention is suitable for the technical field of aerogel materials, and provides a silicon dioxide aerogel material and a preparation method and an application thereof. The preparation method of the silicon dioxide aerogel material comprises the following steps: mixing dimethyl sulfoxide and deionized water, then adding methyltrimethoxysilane, and performing mixing to obtain a mixed solution; adding ammonia water into the mixed solution for gelling to obtain wet gel; and standing and aging the wet gel, soaking the wet gel in ethanol, washing the wet gel with acetone, and carrying out carbon dioxide supercritical drying treatment to obtain the silicon dioxide aerogel material. According to the preparation method, the silicon dioxide aerogel material with super-hydrophobicity and a fine structure can be obtained by adjusting the dosage ratio of methyltrimethoxysilane to dimethyl sulfoxide and carrying out carbon dioxide supercritical drying. The silicon dioxide aerogel material prepared by the method has good carbon dioxide adsorption performance, and can be applied to military and civil fields such as air purification, energy-saving recovery and the like.

The invention discloses a two-dimensional art activity rack. The two-dimensional art activity rack comprises two rack support rods, the bottom of the rack support rods is fixedly connected with a racksupport leg, a rack plate is arranged between the two rack support rods, and the bottom of the rack plate is fixedly connected with a connecting rotating rod. The two-dimensional art activity rack facilitates adjustment of space of a storage cavity; by controlling to separate a movable outer plate and a fixed inner plate, a material stopping rod can extend outside the movable outer plate to retain an object rom falling outside the rack plate, so that protection over the object can be improved, the storage space can be enlarged, storage of more object as well adjustable of the rack plate can be facilitated, and the advantage of adjusting convenience can be achieved; further, the problem that existing racks are inconvenient to adjust to result in limitation of storage space, storage failureof certain objects and influence on object storage can be solved.

The invention belongs to the field of organic synthesis, and discloses a synthesis method of α-cyano quaternary carbon-substituted tetrahydroisoquinoline compounds. Addition reaction occurs to obtain α-cyanoquaternary carbon-substituted tetrahydroisoquinoline compound. The operation of the invention is simple and practical, the reaction conditions are mild, and the yield and purity of the obtained product are high. The invention is suitable for the synthesis of isoquinoline compounds, especially for the synthesis of α-cyano quaternary carbon-substituted tetrahydroisoquinoline compounds.

The invention discloses electronic equipment and a heat dissipation method therefor, and aims to improve heat dissipation efficiency of the electronic equipment and reduce power consumption and noise of the electronic equipment. The method comprises the steps of detecting whether the bottom shell D-cover of the electronic equipment is in contact with a human body or not; and when the D-cover of the electronic equipment is not in contact with the human body, controlling the D-cover to be connected with a heat dissipation module.

The invention relates to a magnetic anchoring system realizing separation and combination of built-in gripping tongs for magnetic control laparoscopic surgery. The magnetic anchoring system comprisesthe built-in gripping tongs, operation tongs and an in-vitro anchoring device, wherein the built-in gripping tongs comprise a hollow sleeve rod, a first permanent magnet, an elastic plate, a first spring, a non-damage tongs clamp head and the like; the operation tongs comprise an operation sleeve rod, a built-in sleeve rod, an operating rod, a second permanent magnet, a second spring and the like;the in-vitro anchoring device comprises a cylindrical anchoring magnet and an anchoring magnet shell, and is used for pulling the built-in gripping tongs to move in the abdominal cavity in vitro. According to the magnetic anchoring system realizing separation and combination of the built-in gripping tongs for the magnetic control laparoscopic surgery, the permanent magnet is arranged at the headend of the operation sleeve rod, the permanent magnet is also arranged at the tail end of the built-in gripping tongs, so that the combination and separation of the built-in gripping tongs can be conveniently controlled, a push rod is arranged in the operation sleeve rod, so that the head end of the elastic plate is controlled to grip the tissue.

The invention discloses a bionic front and back adjustable variable camber guide vane which comprises a front vane and a back vane, the tail edge of the front vane is round, the front edge of the back vane is round, the tail edge of the front vane and the front edge of the back vane are tangent to the intersection point of a mean camber line and the tail edge of the front vane, and the front vane is formed by stacking a series of elements periodically changing along the front edge of the front vane. The front edge of the front blade is distributed in a wave-shaped curve mode, the wave-shaped curve is a sine curve, and the curve equation of the wave-shaped curve is LEh = LEorii + cos (Hb / W * pi) * A. The invention further discloses a design method of the bionic front-back adjustable camber-variable guide vane. According to the invention, the front edge of the front and back adjustable and variable camber guide vane is provided with the knot-shaped bulge which changes according to a sinusoidal curve and has a certain wavelength and amplitude, so that the effects of controlling the airflow separation of the back vane, reducing the total pressure loss of the variable camber guide vane and widening the available rotating angle range are achieved.

The invention provides a low-Reynolds-number airfoil section with multi-seam synergetic jet flow control and a control method. The low-Reynolds-number airfoil section with multi-seam synergetic jet flow control comprises a jet exhaust (2) arranged on the front edge of the upper surface of the airfoil section (1), wherein a suction area (3) formed by a plurality of orderly arranged suction tiny holes (10) is arranged on the rear edge of the upper surface of the airfoil section (1); the jet exhaust (2) is communicated with the suction area (3) through an airflow pipeline (5) in the airfoil section (1) to form a suction loop; an air pump (4) for driving the synchronous operation of suction and injection is installed in the airflow pipeline (5); the jet exhaust (2) and the suction tiny holes (10) are vertical to the upper surface of the airfoil section (1). The suction control technology is applied to the low-Reynolds-number airfoil section, the lifting-resistance characteristic of the airfoil section is improved and the aerodynamic characteristic of a high-altitude vehicle is perfected by controlling the laminar separation of the low-Reynolds-number airfoil section; the airfoil section has the advantages of low power consumption, so that the aerodynamic efficiency of the high-altitude vehicle is improved.

The invention discloses a hydraulic control mechanism for an automatic clutch in a hybrid electric vehicle. The hydraulic control mechanism comprises an oil pumping system, an energy storage system and a working cylinder system, wherein a first high-pressure oil pipe is connected between the energy storage system and the working cylinder system; a second high-pressure oil pipe and a low-pressure oil return pipe are connected between the oil pumping system and the energy storage system; a reversing valve for controlling the circulation direction of hydraulic oil and a pressure sensor used for measuring the pressure in the energy storage system are mounted in the energy storage system; a displacement sensor is mounted in the working cylinder system and used for measuring displacement of theclutch driven by the working cylinder system; and the reversing valve, the pressure sensor and the displacement sensor are all connected with a vehicle-mounted control system and can perform information exchange together with the vehicle-mounted control system. The hydraulic control mechanism is simple in structure, convenient to assemble, disassemble and maintain, and small in space occupation; and as the electronic sensing devices are adopted, the control precision and the reaction sensitivity can be improved.

The invention discloses a device and process for separating and reclaiming difluoro-monochloroethane during production of monofluoro-dichloroethane. The device comprises a cooling tower, a cooling tower kettle, a monofluoro-dichloroethane reclaiming groove, a water groove, a water circulating pump, a water cooler and a de-foaming device. Cooling tower kettle liquid is circularly washed and cooled by circulating water of which the temperature is 5 to 10 DEG C; after being cooled, the monofluoro-dichloroethane of which the boiling point is 32 DEG C is layered by the cooling tower kettle, and the monofluoro-dichloroethane and water are in the lower layer and the upper layer respectively; the water is in the upper layer and overflows to the water groove; after being cooled by the water cooler, the water in the water groove is circulated by the circulating pump; the monofluoro-dichloroethane is discharged from the bottom of the cooling tower kettle to be reclaimed into the monofluoro-dichloroethane reclaiming groove; the difluoro-monochloroethane of which the boiling point is 9.8 DEG C below zero is delivered to the de-foaming device from a gas phase outlet in the top of the cooling tower; the separated water flows back to the cooling tower through a counter flow pipe; and the difluoro-monochloroethane is reclaimed into a reclaiming system through the de-foaming device. The monofluoro-dichloroethane can be reclaimed, a fluorocarbon resource is fully utilized, and the service life of a reclaiming compressor of the difluoro-monochloroethane is also prolonged.