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

The invention discloses an offshore fan pile foundation design method and application thereof. According to the offshore fan foundation design specifications and the offshore fixed platform design specifications, design calculation analysis is carried out based on ocean engineering design analysis software structural analysis computer system (SACS). The design calculation analysis comprises a fundamental analysis, a modal analysis, a seismic analysis, an ice load analysis, a hoisting analysis, a transportation analysis and an installation analysis. Through the method, actual environmental conditions of offshore fans are totally considered in the method, the analyses are accurate, results are reliable and design efficiency is high. Meanwhile, all aspects of foundation design, hoisting, transportation and installation of the offshore fans are considered in the design method. Therefore, the offshore fan pile foundation design method has the advantages of systematicness and comprehensiveness, and can be applied to intertidal belt fan pile foundation design.

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 nozzle mechanism having large-stroke range and high precision. The mechanism includes a rigid-flexible coupling profile 1, a rotation support plate 2, an arc rolling sliding block 3, a support plate hinge 4, a smooth guide rail 5, a sealing supporting plate 6, a ballscrew electric cylinder 7, an electric cylinder hinge 8, and a nozzle fixing rack 9, wherein the rigid-flexible coupling profile 1 includes a fixed profile section 1-1, a flexible profile section 1-2, and an exit straightening section 1-3. According to the invention, the mechanism has a simple and compact structure, and overcomes low control precision caused by multiple procedures, such as force transmission, machining and assembling, etc. The mechanism combines the rolling arch guide rail and a ballscrew electric cylinder, which effectively guarantees non-linear control precision and repeatability. The mechanism achieves continuous adjustment of Mach number, is tightly constructed, has strong practicality and allows easy engineering and design for thermal protection and pneumatic sealing.

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 discloses a method for preparing biomass polyester, which comprises the following steps of: preparing slurry from terephthalic acid and biomass mixed with polyatomic alcohol according to a molar ratio of 1:1.05 to 1:1.5; then adding the prepared slurry into an esterification reaction kettle to perform the esterification reaction; and finally, performing the condensation polymerization to obtain the biomass polyester, wherein the biomass mixed with the polyatomic alcohol comprises the following components in percentage by weight: 90 to 99.2 percent of ethylene glycol, 0.4 to 5 percent of 1,2-propylene glycol, 0.2 to 2 percent of 1,2-butanediol, 0.1 to 2 percent of pentylene glycol and 0.1 to 1 weight percent of sorbierite. According to the invention, the biomass mixed with the polyatomic alcohol used as a raw material is prepared by a biological fermenting and extracting process and replaces petroleum base ethylene glycol prepared by a conventional method, so that the petroleum using amount and the amount of carbon dioxide discharged outward in the smelting process can be reduced and the phenomenon of shortage of petroleum in China can also be relieved. According to the invention, the design method is reasonable, the energy consumption is reduced, the industrial production is easy to implement and the production cost is reduced.

The invention relates to an efficient hydrodynamic cooling tower. The cooling tower is manufactured according to basic data calculated according to a formula design. The cooling tower comprises a shell, a water turbine, a draught fan, a cooling water outlet pipe and a cooling water inlet pipe, wherein the water turbine is matched with the shell and arranged at the inner side of the shell; the draught fan, the cooling water outlet pipe and the cooling water inlet pipe are respectively matched and connected with the water turbine; the water turbine comprises a foundation ring, a volute arranged at the top end of the foundation ring, an exhaust water pipe arranged at the bottom end of the foundation ring, a top cover arranged at the top end of the volute, a rotating shaft penetrating into the volute and a turning wheel arranged at one end of the rotating shaft. The efficient hydrodynamic cooling tower is simple and reasonable in design method and accurate in calculation. The cooling tower provided by the invention has favorable energy and safety performances; and a water flow pushes the turning wheel to generate kinetic energy to drive the draught fan to rotate, and no additional external power source is needed, so that the energy is saved, and the cooling tower is safe and reliable in use and suitable for popularization and application.

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 discloses a method for reinforcing a metal tube joint by means of fiber reinforced polymers (FRPs). The method includes the following steps that surface treatment is conducted on the metal tube joint first, then adhesives are laid for reinforcement which sequentially involves the three steps of bidirectional FRP cloth reinforcement, unidirectional FRP cloth reinforcement and end anchoring, and finally curing is carried out. The method is easy and convenient to implement, no complex equipment is needed, and the method is suitable for the complicated geometric shape of the tube joint. Meanwhile, the adhering FRPs are light and high in strength, and the joint weight does not need to be additionally increased. After reinforcement is completed, the appearance of the joint is attractive, and the joint has good durability. The method is used for the common metal tube joint, and static performance such as rigidity, ductility and bearing capacity and fatigue performance of the joint are improved by adopting the mode that the FRPs cooperate with the metal tube joint and deformation of the joint is suppressed; the method can also provide references for design thought of other types of tube joints.

The invention discloses a water disaster prevention and treatment design method for a mine taking a coal bed as a main aquifer, and the method is applied to coal mine down-hole use. By judging the water discharge amount of a working face water discharging system, whether working face partial syncline exists or not and whether a working face roof scouring zone and adjacent gobs exist or not, check computation and guarantee of the water discharge capacity of a working face and advancing gob ponding drainage are conducted. According to information collecting results of multiple objects and on the basis of corresponding judgment standards, specific water control measures are presented so that early warning of multiple water-inrush types can be provided, the loss caused by mine water disaster hazardous events can be reduced, and even personal casualties caused by the mine water disaster hazardous events can be reduced.

The invention relates to a steel piston composite hear insulation coating and a spraying technology thereof, and belongs to the technical field of material surface engineering. The steel piston composite hear insulation coating is a solid-state compound coating and includes a high-temperature anti-oxidation layer, a low heat conductivity coefficient heat insulation layer, and a high-temperature anti-corrosion layer, wherein the high-temperature anti-oxidation layer is a nano ceramics coating, the heat insulation coating is a solid polymer coating doped with zirconia low thermal conductivity nano powder, and the high-temperature anti-corrosion layer is an anti-corrosion solid polymer coating. According to the steel piston composite hear insulation coating and the spraying technology thereof, the high-temperature anti-oxidation coating is prepared by magnetic control sputtering, the obtained steel piston composite heat insulation coating can effectively prevent combustion heat in a cylinder from outward diffusing from a piston to an engine, the hear loss is reduced remarkably, the overall heat efficiency of the engine is improved, and the service life of the piston is prolonged.

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 relates to an underground pile foundation construction engineering design method, which is characterized by comprising the following steps of S1, early-stage design; S2, foundation investigation and foundation model selection; S3, pile size design; S4, calculating a pile foundation; S5, pile foundation design; S6, pile foundation calculation sheet compiling, and pile foundation planearrangement diagram, pile foundation bulk sample design diagram, drilling plane arrangement diagram and geological longitudinal section and pile bottom elevation design diagram drawing; and S7, pilemanufacturing, pile foundation driving and pile splicing. The underground pile foundation construction engineering design method is high in practicability, the manpower and material resource cost canbe effectively reduced, the construction efficiency is improved, the construction period is shortened, and the underground pile foundation designed through the design method is better in stability, higher in stress resistance and bearing capacity and low in possibility of deformation or instability; redundancy of structural bearing capacity and waste of materials are avoided, the construction costis lower, and the quality is better.

The invention relates to a protection device and a processing method for a sensitive structure of a quartz micromechanical accelerometer. The protection device selects a quartz crystal of the same material and cut shape as the sensitive structure as a base material, adopts a high-precision photolithography process to make patterns, and uses wet etching It is processed by etching process, and the sensitive structure and protective structure are assembled by epoxy adhesive bonding, forming a three-layer assembly structure in which the upper and lower layers are the protective structure and the middle layer is the sensitive structure, and the upper and lower protective structures are sensitive to the middle layer. The mass block on the structure plays the role of limit protection, and at the same time, the groove area is etched to a certain depth on the protection device, providing space for the deformation of the sensitive structural mass block, and at the same time, high alignment accuracy is achieved with the help of an optical microscope system. The protection device of the present invention effectively improves the impact resistance of the sensitive structure, avoids the stress caused by the difference in thermal expansion coefficient, improves the reliability of the sensitive structure, and has high assembly precision, simple process and easy implementation.

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 an interchangeability design method for a domestic satellite-mounted travelling-wave tube amplifier and an imported satellite-mounted travelling-wave tube amplifier. The method comprises a step of mechanical interface interchangeability design, a step of input excitation interchangeability design and a step of usage pattern interchangeability design, wherein the step of mechanical interface interchangeability design comprises enabling installing interfaces of two travelling-wave tubes to be consistent with each other, be consistent with heat pipe layout interfaces positioned on a satellite structure boards and be consistent with antenna waveguide output interfaces; the step of input excitation interchangeability design comprises adjusting intensity of input excitation signals by externally connecting a fixed attenuator so as to meet the requirements of excitation of different saturation points of the two travelling-wave tubes; and the step of usage pattern interchangeability design comprises adding movement options of instructions such as starting / shutdown, feeding low pressure and discharging low pressure in operations schedule design so as to meet the requirements of two products for different usage patterns. According to the interchangeability design method, interchanging usage of the domestic travelling-wave tube amplifiers and the imported travelling-wave tube amplifier can be achieved, and flexibility in product matching in a subsystem scheme is guaranteed. The interchangeability design method is already applied in some satellite data transmitting subsystem.

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 discloses a method for reinforcing metal pipe joints with fiber-reinforced composite materials. There are three steps of reinforced composite material cloth reinforcement and end anchorage, and finally curing. The method of the invention is simple and convenient in construction, does not need complex equipment, and is suitable for complex geometric shapes of pipe joints. At the same time, the pasted FRP material is light and high-strength, without additional node load. After the reinforcement is completed, the node has a beautiful appearance and good durability. The method of the present invention aims at common metal pipe nodes, by making the FRP material and the metal pipe nodes work together and suppressing the deformation of the nodes, to improve the static performance and fatigue performance of the nodes such as stiffness, ductility, bearing capacity; the method can also be Other types of pipe nodes provide reference for design ideas.

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).

The invention relates to an accurate design method of casting shrinkage size based on local envelope density, which relates to the technical field of casting size precision design. The purpose of the present invention is to solve the problems that the existing empirical scaling method has large casting dimensional accuracy errors, and the overall envelope density method has no obvious effect on improving the casting dimensional accuracy. Method: Divide the test model into several local envelopes according to the shrinkage center ray division method, first calculate the local envelope density of any local envelope, and according to the quadratic relationship curve between the local envelope density and the shrinkage rate, get Calculate the shrinkage rate of the local enveloping body, and then use the same method to obtain the shrinkage rate of all the local enveloping bodies of the test model, and then convert the shrinkage rate of all the local enveloping bodies of the test model into the shrinkage rate of the same part of the casting . The invention can obtain an accurate design method of casting shrinkage size based on local envelope density.

The invention provides a low-earth-orbit satellite data transmission and relay baseband processing integrated design device and method. The low-earth-orbit satellite data transmission and relay baseband processing integrated design device comprises a filling frame device and the like. The filling frame device and a first cache are located at the left side of a real-time channel scheduling unit and are connected with the real-time channel scheduling unit. A real-time formatting unit is located at the right side of the real-time channel scheduling unit and is connected with the real-time channel scheduling unit. A time delay channel scheduling unit is located at the right side of a second cache and is connected with the second cache. A time delay formatting unit is located at the left side of the time delay channel scheduling unit and is connected with the time delay channel scheduling unit. The design method provided by the invention is reasonable and reliable and is simple in engineering realization and flexible in in-orbit application. The reference and basis for future low-earth-orbit satellite data transmission and relay baseband processing design are provided.

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.