24results about How to "Avoid complex process" patented technology

The invention relates to the technical field of power grids, and provides a network construction device transient stability evaluation method and system considering damping and current limiting, and the method comprises the steps: based on the actual angular frequency of a virtual synchronous machine, the rated angular frequency of a power grid, and the active reference value of a network construction type inverter converter, combining the transient stability critical condition of the virtual synchronous machine and an energy function, and evaluating the transient stability of the network construction device; carrying out simultaneous solution to obtain a critical fault clearing angle so as to quantify the transient stability of the network construction device; wherein the transient stability critical condition of the virtual synchronous machine is obtained by introducing an equivalent damping deceleration area and incorporating the equivalent damping deceleration area into an equal area rule, and calculation of the damping deceleration area is simplified by analyzing the concavity and convexity of an angular frequency track. The conservative property of a traditional transient stability criterion is effectively reduced, and a more accurate design basis is provided for control parameter setting of the network-forming converter.

The application provides a frequency converter control hub, which comprises a frequency converter connecting end, a control system connecting end, a frequency setting and feedback module connecting end, an operating state indication module connecting end and a mode selection switch, and is connected with a frequency converter, a control system, a frequency setting and feedback module and an operating state indication module through the frequency converter connecting end, the control system connecting end, the frequency setting and feedback module connecting end and the operating state indication module connecting end respectively. The frequency converter control hub of the application realizes one-key switching between manual and automatic modes of the frequency converter, simultaneously provides manual control related functions of the frequency converter, can transmit manual and automatic control signals and frequency converter feedback signals, serves as a signal transmission bridge between other modules, avoids complex wiring between devices, greatly reduces wiring difficulty, and makes construction and maintenance more convenient.

The utility model relates to an exposed injection lead screw assembly and an injection molding machine thereof, the exposed injection lead screw assembly comprises a lead screw and a lead screw nut, the driving end of the lead screw is inserted into a bearing, and a grease injection hole penetrating through the inner side and the outer side is formed in the lead screw nut; the grease injection hole is filled with grease; the bearing is wrapped in a closed oil cavity, and the oil cavity is filled with lubricating oil. By the adoption of the design of the exposed lead screw, only the bearing part is lubricated through the closed oil cavity, the requirement for high-precision sealing is greatly reduced, and a complex cylinder barrel sealing structure in traditional oil immersion lubrication is avoided. Therefore, the processing and assembling difficulty is reduced, and the risk of lubricating oil leakage caused by sealing failure is reduced, so that the manufacturing cost and the maintenance cost are reduced.

A cleaning machine table comprises a cleaning pool, a cleaning device and a control device, the manipulator is suitable for grabbing the wafer and transmitting the wafer; a transmitting end of the laser detection module is located on one side of the cleaning pool, a receiving end of the laser detection module is located on the other side of the cleaning pool, and a light path between the transmitting end and the receiving end corresponds to the position of the wafer grabbed by the manipulator; the first baffle is located on one side of the receiving end away from the transmitting end; and the first anti-reflection layer is arranged between the first baffle and the receiving end, and the first anti-reflection layer is suitable for inhibiting mirror reflection of the laser. The first anti-reflection layer is arranged, so that laser subjected to scattering and diffuse reflection on the surface of the wafer is prevented from entering the surface of the first baffle and being reflected to the receiving end through the mirror surface of the first baffle, reflected light received by the receiving end is reduced, and the situation that the light received by the receiving end is too complex is avoided. Therefore, the receiving end can judge the position of the wafer according to the received laser from the transmitting end, so that machine shutdown caused by wrong feedback of the laser detection module to a machine is avoided.

The invention discloses a casting and extruding integrated electric automobile lower body structure reinforcement layout topological optimization method, and relates to the field of electric automobiles, the method comprises the following steps: carrying out finite element mesh division on an electric automobile lower body structure, and classifying finite element meshes into extrusion part meshes and casting part meshes according to the types of processing technologies adopted by parts; carrying out secondary division on a finite element grid in a single part, and subdividing the finite element grid into a design domain and a non-design domain; aiming at a casting design domain, a mathematical model of casting constraint is established, and optimization of external reinforcement of the thin-wall die casting is realized; applying extrusion process constraint to an extrusion design domain to establish a mathematical model, and realizing optimization of internal reinforcement of the extrusion structure; solving the mathematical model, obtaining the density distribution of each unit, and determining a reinforcement layout form meeting the comprehensive service condition and the dual manufacturing process constraint; and reconstructing a topological optimization result into a CAD (Computer Aided Design) model or a grid model with reinforcing ribs according to the calculated unit density distribution and load transfer path.

The present application provides a vehicle operating device capable of being retracted and improved visibility and interior design. The present application includes a panel having an opening; an operating module capable of moving between a first position and a second position spaced apart from each other along a first direction as a front-rear direction through the opening; a first rotary link and a second rotary link formed in pairs with each other at the rear of the operating module, each capable of rotating about an axis in a second direction crossing the first direction; a drive source providing a driving force for rotating the first rotary link and the second rotary link; and a cam mechanism connecting the first rotary link and the second rotary link with the operating module, guiding angular motion work of rotating the first rotary link and the second rotary link in opposite directions to move the operating module to the first position or the second position along the angular motion work direction.

The utility model relates to a kind of foundation pit inclined pile support construction devices with angle real-time correction function, including angle correction device and inclined pile, the angle correction device includes inclined pile moving track, inclined pile limiting device and jack device, the jack device includes top jack device and two lateral jack devices, the inclined pile limiting device is located inclined pile moving track bottom, the top jack device is located inclined pile moving track top, two lateral jack devices are symmetrically set in inclined pile moving track middle end two sides, the inclined pile limiting device has inclined pile limiting passage in, the angle monitoring device is equipped in the inclined pile, the angle monitoring device and jack device are wirelessly connected with the control system outside. The device realizes the angle accurate control of inclined pile construction process.

The utility model discloses a high-voltage live display locking device for monitoring leakage current, which belongs to the technical field of lightning arrester monitoring and comprises an electric leakage detection module, a signal processing module, a master control module, an alarm module, a locking module and a power supply module. The electric leakage detection module is used for collecting a leakage current signal and transmitting the leakage current signal to the signal processing module; the signal processing module converts the leakage current signal into a voltage signal and transmits the voltage signal to the main control module; the main control module responds to the voltage signal to generate an alarm signal and a blocking signal; the alarm module responds to the alarm signal to execute an alarm action; the locking module responds to the locking signal to execute a locking action; the power supply module provides working voltage for the electric leakage detection module, the signal processing module, the main control module, the alarm module and the locking module. According to the utility model, the problem of low safety caused by the fact that the electrification condition of the lightning arrester corresponding to other electrical equipment is not considered in the prior art is solved.

The application relates to the technical field of alumina modification, and particularly discloses a synthesis method of modified alumina, which aims to solve the problems of insufficient thermal stability of alumina and uneven dispersion of modified elements in the prior art.The method comprises the following steps: adding a metal organic compound into an aluminum sulfate aqueous solution in advance before the aluminum sulfate aqueous solution and a sodium metaaluminate aqueous solution are subjected to a parallel flow reaction; adding an aminopropylsilazane during the parallel flow reaction; after the parallel flow reaction is completed, adding a hydroxylated quaternary ammonium base into the generated pseudo-boehmite slurry to perform dispersion treatment, and then adding a silicon-containing compound to perform a doping reaction; and finally, calcining the pseudo-boehmite powder to obtain modified alumina.The in-situ and uniform modification of the alumina is realized by introducing the modified components with synergistic effects in different stages and in a specific order, the thermal stability of the final product is significantly improved, and the process flow is short and the cost benefit is high.

The application discloses high-purity copper sulfide prepared from acid wastewater and a method thereof, and belongs to the technical field of metallurgy, and particularly relates to a method for recovering high-purity copper sulfide from molybdenum metallurgical wastewater. In the method, first, sodium hydroxide is used to adjust PH, so that heavy metals such as copper and iron are precipitated, and molybdenum exists in the form of molybdate in the solution, and separation of molybdenum is realized. After the separation, the precipitate is subjected to ammonia reverse dissolution, sodium hydrosulfide precipitation, water washing, acid washing and water washing, and finally high-purity copper sulfide with qualified quality is obtained. The application takes "alkaline complexation-selective sulfidation precipitation-purification and refining" as the core, and successfully recovers high-purity copper sulfide (purity greater than or equal to 99.5%) from copper-iron-containing heavy metal wastewater.

This invention discloses a rapid bridge damping ratio identification method based on a stationary inspection vehicle, belonging to the field of bridge structure vibration testing technology. The method includes: parking the inspection vehicle at the mid-span of the bridge under inspection; exciting the bridge vibration using a passing vehicle and then driving away; collecting the acceleration response of the inspection vehicle in the attenuation segment; establishing a dynamic model of the attenuation segment of the vehicle-bridge coupled system; constructing a two-degree-of-freedom joint state model, internalizing the vehicle-bridge interaction force as a linear combination of system state variables; extracting the effective attenuation segment through signal preprocessing and introducing a dual anti-noise mechanism of adaptive signal-to-noise ratio weights and Huber weights; and employing a profiled two-stage parameter identification strategy, first locking the frequency and modal mass, and then finely scanning and identifying the bridge's first-order damping ratio. This invention requires only a single inspection vehicle and an acceleration sensor, eliminating the need to deploy sensors on the bridge structure. It has strong anti-interference capabilities, high identification accuracy, and is suitable for rapid inspection of small-to-medium span bridges.

The invention belongs to the technical field of chemical synthesis, and relates to the technical field of synthesis of allylamine drug intermediates, in particular to a method for synthesizing cis-allylamine compounds through iron photocatalysis. In order to develop a simple, convenient and green photocatalytic technology for preparing the cis-allylamine compound, aryl-terminated alkyne or a derivative thereof and amino acid are used as raw materials, a one-pot reaction is carried out under purple light irradiation through iron catalysis, the corresponding Z-selective olefin compound can be obtained, the method is mild in reaction condition, simple to operate and high in cis-selectivity, and the method is suitable for industrial production. A catalytic system which is low in cost, green and good in biocompatibility is used, and the concept of green chemistry is met. In addition, the photocatalytic technology provided by the invention provides a green and efficient innovative approach for synthesis of cis-allylamine drugs.

The invention discloses a method for preparing coal water slurry from coal chemical industry wastewater, and belongs to the technical field of wastewater recycling. The method comprises the following steps: adding a first complexing agent into the coal chemical wastewater, and uniformly stirring; adding a second complexing agent into the obtained solution, and uniformly stirring; continuously adding a dispersing agent; and mixing and stirring the obtained solution with pulverized coal. According to the method, different complexing agent systems are added in stages, so that metal ions in the wastewater can be preferentially treated, the metal ions do not need to be separated from the wastewater, the activity of the metal ions is shielded in situ through chemical action, the complex process of a pretreatment process is avoided, and the interference of the metal ions on the slurrying property can be accurately solved. Meanwhile, the method is low in implementation cost, environment-friendly and high in compatibility.

The invention discloses a myocardial infarction positioning method, device and equipment and a medium, and belongs to the technical field of bioelectricity data processing. The method comprises the following steps: acquiring an electrocardiosignal set; matching a preset related lead table with each lead electrocardiosignal to obtain each weight vector corresponding to each to-be-identified position; performing data processing on each lead electrocardiosignal through a lead signal processing model corresponding to the lead type to obtain each lead prediction probability matrix; and for each to-be-identified position, performing weighted summation on each lead prediction probability matrix through a weight vector to obtain the probability of occurrence of myocardial infarction at the to-be-identified position. According to the scheme, effective screening and fusion of lead features are realized while full utilization of multi-lead information is ensured, so that the accuracy of myocardial infarction recognition and positioning is improved.

A prefabricated wall conjoined grouting sleeve belongs to the technical field of fabricated buildings and comprises a plurality of sleeve bodies and Z-shaped connecting pipes, a grouting pipe joint is arranged on the lower portion of one side of each sleeve body, and a grout outlet pipe joint is arranged on the upper portion of the outer wall of the sleeve body on the opposite side of the grouting pipe joint. The grout outlet pipe joints and the grouting pipe joints of the adjacent sleeve bodies are communicated through Z-shaped connecting pipes, and the multiple sleeve bodies are sequentially connected into a row of integral structures through the Z-shaped connecting pipes. By means of the arrangement, grouting operation of the grouting sleeves can be conducted row by row, the grouting efficiency is improved, meanwhile, the grouting quality is guaranteed, and the follow-up plugging procedure is reduced.

The application provides a hectorite-polymer large-temperature-difference constant-flow rheological modifier and a preparation method and application thereof. The rheological modifier comprises the following raw materials in parts by weight: 2-5 parts of nano hectorite, 4-10 parts of a silane coupling agent, 8-12 parts of a monomer containing an adsorption group, 10-15 parts of an anionic monomer, 5-8 parts of a cationic monomer, 2-5 parts of a temperature-sensitive monomer and 0.14-0.18 parts of an initiator. The preparation method of the rheological modifier is as follows: the nano hectorite is modified by using the silane coupling agent first, and then the modified nano hectorite is subjected to a copolymerization reaction with a mixed solution of various monomers under vacuum and in the presence of the initiator to prepare the hectorite-polymer large-temperature-difference constant-flow rheological modifier. The application also provides the application of the rheological modifier in a natural gas hydrate drilling fluid. The hectorite-polymer large-temperature-difference constant-flow rheological modifier provided by the application has good temperature resistance and salt resistance, excellent low-temperature regulation capacity and a wide temperature application range.

The application discloses a quantum state preparation method and system based on LimTDD and electronic equipment, and relates to the technical field of quantum state preparation. The method comprises the following steps: obtaining target LimTDD corresponding to classical data in a preset technical field; generating a first target quantum circuit for converting the target LimTDD into a new target LimTDD, wherein the quantum state of the new target LimTDD is; processing the first target quantum circuit to obtain the quantum state corresponding to the classical data. The application can more accurately prepare the quantum state corresponding to the classical data, effectively improve the preparation efficiency of the quantum state, and has strong scalability.

The utility model provides a disposable skin disinfection broken type applicator, include: the bottom end opening arrangement of smearing base, broken board is set in the opening end of smearing base in a detachable mode, and, the side of broken board is equipped with medical sponges to smearing base's back, disinfection pull -off rod is obliquely set in the top of smearing base, and, disinfection pull -off rod's inside is equipped with disinfection bearing cavity, it is linked together with smearing base's opening end, the blasting wrench is set up in disinfection pull -off rod's one side, and the acute angle arrangement between both, the blasting wrench is connected with disinfection pull -off rod. The utility model provides the smearing ware simple and convenient operation, and economic, low -cost, can avoid the infection in the operation process simultaneously, can avoid the disinfectant exposed time also, can avoid the complex disinfection process, and complete the disinfection process once.

The utility model discloses a sacrificial anode anti-corrosion device for a cross-sea bridge steel pipe pile, which is mounted on a bearing platform electrically connected with the steel pipe pile and comprises an embedded conductor, an external conductor and a sacrificial anode piece, the pre-embedded conductor is partially embedded in the bearing platform and is connected with the reinforcing steel bars in the bearing platform; the sacrificial anode piece is embedded in a seabed covering layer on the side part of the bearing platform; the external conductor adopts a rigid structure; one end of the external conductor is connected with the part of the embedded conductor exposed out of the bearing platform, and the other end is connected with the sacrificial anode piece. The device can be synchronously constructed and mounted along with the bearing platform main body structure, so that the complex procedure of secondary diving operation in the traditional process is avoided, the construction efficiency is greatly improved, and the underwater operation risk is reduced. Meanwhile, according to the device, the protection period is prolonged through a replaceable connecting structure, the anti-scouring performance is improved through a rigid external conductor attached to the surface of the bearing platform, and the protection state of the steel pipe pile is intelligently monitored in real time through a cathode monitoring system.

The present invention provides a method for continuously preparing titanium and titanium alloy wire materials with a short process, which relates to the technical field of preparing titanium and titanium alloy wire materials. The preparation method includes powder preparation, slurry preparation, wire blank forming, wire blank drying, wire blank coating, degreasing sintering, cold drawing and post-treatment carried out in sequence. Among them, the titanium and titanium alloy extrusion slurry is poured into the slurry tank of a screw extruder, and an ultraviolet light source or a heat source is equipped at the die opening of the screw extruder. The slurry is extruded through the die opening and in-situ solidified into a wire blank under the action of the light source or the heat source. By matching continuous production equipment with the technological processes of screw extrusion molding, degreasing sintering and cold drawing, the present invention avoids the high-temperature melting process of the traditional casting-drawing process and the complex processes of multi-pass hot rolling-drawing, realizes the short-process continuous and controllable preparation of titanium and titanium alloy wire materials, has high flexibility in the design of its composition and diameter, strong stability, wide applicability, low cost and excellent performance, and is very suitable for large-scale industrial production.

This invention relates to the field of logistics pallet technology and discloses a logistics pallet positioning device, including a pallet body. A buffer mechanism is provided at the bottom of the pallet body, a positioning mechanism is provided at the top of the buffer mechanism, and a rotating mechanism is provided at the bottom of the pallet body. The positioning mechanism includes a positioning component and a limiting component. The positioning component is located at the top of the buffer mechanism, and the limiting component is located on the left side of the pallet body. In use, the positioning component enables the pallet body to be used for transporting goods. When goods are placed on a placement platform, the weight of the goods causes the placement platform to move downwards. During the movement of the placement platform, a rack moves, causing the rack to drive a gear to rotate. Under the action of the gear, the rotating rod drives the support column, clamping plate, and limiting plate to rotate, positioning the support column and clamping plate on the left and right sides of the goods.

This invention discloses a synergistic catalytic degradation and recycling method for ultra-high molecular weight polyethylene (UHMWPE) fibers, relating to the field of polymer material recycling technology. The method includes: shearing, ultrasonically cleaning, and drying UHMWPE fibers to obtain pretreated fibers; dissolving a bis(acetylacetone)manganese(III) complex in a mixed solvent containing tert-butyl hydrogen peroxide and glacial acetic acid to prepare a chemical catalyst solution; adding the pretreated fibers to the solution for gentle heating and shaking treatment, followed by rinsing and drying to obtain pre-activated fibers; dispersing alkane hydroxylase AlkB in phosphate buffer, adding cofactors NADH and ferrous ammonium sulfate to prepare a biocatalyst suspension; adding the pre-activated fibers to the suspension for isothermal shaking culture for biocatalytic degradation; and obtaining oligomer / small molecule platform compounds through solid-liquid separation, concentration, alcohol precipitation, centrifugation, and drying. This invention achieves high-value-added recycling by efficiently degrading UHMWPE fibers under mild conditions through the synergistic effect of chemical and biocatalysis.

The invention relates to an irradiation treatment system for local modification of a semiconductor, and belongs to the technical field of semiconductor processing. The irradiation treatment system for local modification of the semiconductor comprises a bearing table, a shielding mechanism, a positioning detection assembly and a control module, wherein the bearing table is used for bearing and fixing a semiconductor wafer; the shielding mechanism comprises a shielding plate and a driving assembly, and a radiation opening is formed in the shielding plate; the surface, facing the radioactive source, of the wafer is a processing surface; the edge position of the shielding plate is fixed, and the driving assembly is connected with the center point of the shielding plate and drives the center point to ascend and descend in the axial direction, so that the shielding plate generates elastic deformation to form an arc-shaped surface; the positioning detection assembly is used for detecting contact between the shielding plate and the machining face. The control module controls the center point of the shielding plate to ascend and descend according to the contact signal, so that the arc-shaped face shape of the shielding plate is matched with the arc-shaped shape of the machining face. According to the irradiation treatment system for semiconductor local modification, the reliability and the yield of a semiconductor local modification process can be improved.

The application discloses an imaging electrical dual-mode detection chip based on heterogeneous packaging, characterized in that the imaging electrical dual-mode detection chip comprises an imaging chip, a microelectrode array, a lead wire, a contact and a packaging tube shell; the contact of the imaging chip and the microelectrode array is connected to the packaging tube shell in a heterogeneous packaging mode. The significant advantage of the imaging electrical dual-mode detection chip is that the complex processes of tape-out design and secondary processing are avoided, and meanwhile, the flexibility of the packaging makes it possible to adjust the size, layout and spacing of the microelectrode array according to the requirements of application scenes, so that the requirements can be better met.