56results about How to "Reasonable design method" patented technology

The invention discloses a process for extracting and separating isoflavones from kudzu vine, which comprises the steps of disintegrating kudzu vine to 60-150 meshes, loading into a liquid dynamic continuous flow upstream extraction device for alcohol extraction, combining the extract liquid and filtering, concentrating the filtrate to obtain total isoflavones extract, and separating the total isoflavones extract to obtain puerarin and soybean aglycone.

The invention relates to a variable mach number transonic rigid free jet nozzle which comprises a left sidewall (1), a right sidewall (10), an upper support plate (4) and a lower support plate (5), wherein the left sidewall (1) and the right sidewall (10) are bilaterally symmetric, and are fixed and connected into an open nozzle frame in a supporting way by virtue of the upper support plate (4) and the lower support plate (5), which are symmetrically arranged; an upper molded surface mechanism (2) and a lower molded surface mechanism (3) are longitudinally and symmetrically arranged in the nozzle frame. The variable mach number transonic rigid free jet nozzle is characterized by also comprising an upper right semicircular bearing (6) and an upper left semicircular bearing (7). According to the variable mach number transonic rigid free jet nozzle, the pneumatic flow field is good, and a design method is reasonable; a semicircular shaft design is adopted for the tail end of a rigid molded surface, so that the area of an outlet of the open nozzle is kept constant, and an airflow field at the outlet of the nozzle is uniform and regular; an obvious uniform test area can be formed at the outlet of the nozzle, so that test requirements are met, and good effects are achieved in a high-altitude stand air blowing test.

The invention discloses a design method of a well cementation annulus slurry column structure. The design method comprises following steps: calculating the maximum pressure Pmax applied on the stratum by an annulus slurry column, wherein the maximum pressure Pmax is the pressure generated when the slurry is displaced in place during the well cementation construction; calculating the minimum pressure Pmin applied on an oil gas bed by the annulus slurry column, wherein the minimum pressure Pmin is the pressure generated when the rapidly cemented cement slurry loses weight during a cementing process; and determining whether the annulus slurry column structure is reasonable according to the maximum pressure Pmax and the minimum pressure Pmin. According to the design method, various pressures related to the annulus slurry column structure can be quantitatively calculated and contrasted, and the determined slurry column structure can stably press the oil gas bed and can prevent the leakage of the stratum. The design method is more scientific and reasonable.

The invention relates to a variable Mach number rotating mechanism based on semicircular bearings. The mechanism comprises a left side wall 1, an upper molding surface mechanism 2, a lower molding surface mechanism 3, an upper support plate 4, a lower support plate 5, an upper right semicircular bearing 6, an upper left semicircular bearing 7, a lower right semicircular bearing 8, a lower left semicircular bearing 9 and a right side wall 10. For a free jet spraying pipe with an open type outlet, the semicircular shaft lug design of the rotating mechanism effectively guarantees a rigid molding surface rotating center shaft as a spraying pipe molding surface outlet edge line so as to effectively guarantee the reference uniformity of the sectional area of the outlet of the spraying pipe and the throat way control height in the Mach number adjusting process; and a fixed molding surface driving end adopts an arc guide rail mode to effectively compensate the defect of incapability of locking the semicircular bearings, so that the adjustment of a driving mechanism is effective and fast.

The invention provides a device for integration of a real-time and delayed channel of a satellite baseband data processing system. The device comprises a virtual channel logic dispatching unit, a format assembly unit, a filling generation unit, a storage unit and a routing unit. During design, real-time and delayed data transmission is performed for a physical link in a time division manner aiming at a real-time operation mode and a delayed operation mode. The invention further provides a corresponding method for integration of the real-time and delayed channel of the satellite baseband data processing system. By the aid of the method, data transmission efficiency is improved, timeliness of information acquisition in wartime is enhanced, complexity of the system is reduced, and good effect is achieved. The design method is already applied to a specific satellite data transmission subsystem.

The present invention relates to a thick-film laser trimming method and trimming system based on nano-silver paste. The method prepares nano-silver paste suitable for tuning fork gyro characteristics through a new type of formula, and utilizes screen printing thick-film manufacturing technology to pre-process Deposit nano-silver paste masses at the end of the fork arm of the tuning fork, and use laser trimming technology to selectively remove the sintered nano-silver paste at the end of the tuning fork. Efficient and accurate on-line detection of the vibration form and frequency interval of the base, and the fast and accurate adjustment of the mechanical coupling error and frequency of the tuning fork gyroscope. This method combines nano-slurry production technology, micro-machining Combining with mature screen printing technology, the design method is reasonable and feasible, and the purpose of further improving the precision of the tuning fork gyroscope and perfecting the performance index of the gyroscope is achieved.

The invention relates to a method for designing a secondary air extraction device. According to the air extraction device, a piston disc is driven by a crank connecting rod to act in a reciprocating mode. Geometrical parameters of the secondary air extraction device are adjusted through a relational expression, wherein the geometrical parameters comprise the internal diameter d1 of a suction tube, the internal diameter d2 of a discharging tube, the diameter D of the piston disc, a gap a between the piston disc and a cavity when air is exhausted in a balanced mode and a gap b between the piston disc and the cavity when air is sucked in a balanced mode. The secondary air extraction device has the advantages of being simple and compact in structure, small in size, high in reliability, good in self-suction performance, convenient to carry, install, overhaul, maintain and repair and the like. The performance of the secondary air extraction device satisfies the requirements for the flow and the maximum vacuum degree of the technology.

The invention discloses an adjustable throttling device for simulating a spraying pipe of an aero-engine. The adjustable throttling device comprises a spraying pipe body, an axial normal-open throughhole, a lateral adjustable through hole, an adjusting assembly and a fixing assembly, wherein the spraying pipe body comprises an axial inlet end and an axial outlet end, the axial normal-open throughhole is located at the axial outlet end of the spraying pipe body, the lateral adjustable through hole is formed in the spraying pipe body in the peripheral direction, the lateral adjustable throughhole is closer to the axial inlet end of the spraying pipe body compared with the normal-open through hole, the adjusting assembly is used for adjusting the hole size of the lateral adjustable throughhole, therefore the throttling working condition of the spraying pipe of the aero-engine is simulated, and the fixing assembly fixes the adjusting assembly to the spraying pipe body.

The invention provides a deep sea Christmas tree electric-hydraulic control valve unit single electricity low pressure reversing valve designing method.The method comprises the specific steps of determining the design scheme according to the actual using environment, verifying and calculating geometric dimensions, verifying and calculating valve body operation stress, conducting reexamination and verification and the like.The design method is reasonable and high in calculation efficiency and precision, design value is closer to actual use value, reliability of design work of a deep sea Christmas tree electric-hydraulic control valve unit double-electricity low pressure reversing valve is effectively improved, and thereby it is helpful to improve stability and reliability of a valve body in actual use process.

The invention aims at providing a method for designing a blade blank for electrolytic machining. A blade is a compressor stator blade without a mounting plate, and the blade blank is composed of the mounting plate, a blade body profile and a process boss. The blade blank is mainly designed from the following four aspects: (1) the design of the mounting plate, specifically, the mounting plate is added at the root of the blade; (2) the design of the process boss, specifically, the process boss is added at the tip of the blade; (3) the design of the theoretical allowance of the blade body profile, specifically, the single allowance of a blade body is designed to be 1.2mm, the allowance is added along the normal, and both the exhausting and leading edges of the blade body are phi 2mm and extend outwards for 3mm; and (4) the control of tolerance of the blade body profile, specifically, the control of tolerance of the blade body profile is designed as +0.4mm and -0.2mm. The blade blank designed by the method is used in electrolytic machining and can solve the problems of low production efficiency, easy deformation and poor precision in the traditional machining method.

A design method of a layered double-metal hydroxide steel bar corrosion inhibitor based on a density functional theory comprises the following steps: (1) establishing a layered double-metal hydroxide super-cell model, and comparing and analyzing the binding energy of chloride ions, anions with corrosion inhibition performance and layered double-metal hydroxide laminates based on the density functional theory to obtain a layered double-metal hydroxide super-cell model; the layered double hydroxides with the efficient chloride ion capturing performance are screened out; (2) by establishing an iron surface super-cell model, calculating the interaction and the stability of the anions with the corrosion inhibition performance and the iron surface based on a density functional theory, and preferably selecting the anions with excellent corrosion inhibition performance on the reinforcing steel bar; and (3) combining the calculation results of the steps (1) and (2) to design the layered double-metal hydroxide steel bar corrosion inhibitor with efficient chloride ion capturing performance and excellent corrosion inhibition performance at the same time.

The invention discloses a test method and a test device for coarse aggregate angularity, belonging to the field of a road engineering aggregate test device. According to the method, the inner frictional resistance between coarse aggregates is converted into torque through blades, so as to represent the coarse aggregate angularity. The test device comprises a container, a torque rod, blades and a torque tester, wherein the torque rod is vertically rotationally arranged in the container; three blades in fixed connection with the torque rod are uniformly distributed from top to bottom; horizontal inclined angles between the blades are 120 degrees; the top end of the torque rod is connected with the torque tester. Compared with the prior art, the method and the device provided by the invention have the advantages that the angularity of large-grain size aggregates is represented by the inner frictional resistance between the large-grain size aggregates and have the characteristics that the application scope is wide and the coarse aggregate angularity can be truly reflected.

The invention provides a free jet all-altitude air inlet device based on an asymmetric two-arm robot. The free jet all-altitude air inlet device is characterized by comprising a left side wall (1), a short arm mechanism (2), a long arm mechanism (3), a right side wall (4), a gear disc (5) and a motor (6), wherein the gear disc (5) is disposed at the joint of a test cabin and an air stabilizing chamber, one end of the motor (6) is fixed in the test cabin and is connected with the gear disc (5) through a gear, the middle of the lateral side of the gear disc (5) is provided with a rectangular hole, the left side wall (1) and the right side wall (4) are symmetrically arranged on the inner walls on the left and the right sides of the rectangular hole of the gear disc (5), the short arm mechanism (2) and the long arm mechanism (3) are disposed between the left side wall (1) and the right side wall (4) vertically, and the short arm mechanism (2) and the long arm mechanism (3) are fixed on the upper side and the lower side of the gear disc (5). An air inlet passage is formed among the left side wall (1), the short arm mechanism (2), the long arm mechanism (3) and the right side wall (4).