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1588results about How to "Good technical effect" patented technology

Construction method of composite soil pressure balance tunnel shielding machine for traversing shallow-buried water-rich sand layer

ActiveCN101403307AScientific and reasonable technical solutionsEasy to implementTunnelsEngineeringPressure balance
The invention discloses a construction method that a composite soil pressure balanced shield machine passes through a shallow sand layer rich in water, pertaining to the technical field of tunnel construction. When the composite soil pressure balanced shield machine passes through the shallow sand layer rich in water, an injecting system is arranged at the position of a pressure plate and a cutter head of the shield machine so as to inject a matter-a foaming agent, or bentonite, or a macromoleclar polymer, or the mixture of the three, which has the performances of rapid volume expansion and viscosity increase after absorbing water, into the front shallow sand layer rich in water; the shallow sand layer rich in water is rapidly expanded, soil entering an integral pressure cabin is caused to form plastic flow state, and the soil is caused to reach the permeability coefficient of lower than the magnitude of 10<-5>cm/s which is needed by the construction and the caving degree of 10 to 15cm. The technical proposal is scientific and reasonable, simple and easy to implement, can acquire obvious technique effect, adopts the composite soil pressure balanced shield machine for passing through the shallow sand layer rich in water successfully and acquires satisfactory construction quality as well as guarantees the construction period.
Owner:URBAN MASS TRANSIT ENG CO LTD OF CHINA RAILWAY 11TH BUREAU GRP

Intelligent operation and maintenance method and system based on big data

The invention discloses an intelligent operation and maintenance method based on big data. The method comprises the following steps that: carrying out online collection and offline collection on the related data and information of each category of elements in the full life circle of the transformer, and storing and managing the collected data; analyzing and processing the collected data, and through the analyzed and processed data, carrying out online monitoring, intelligent monitoring early warning and operation and maintenance optimization on the transformer to obtain an intelligent monitoring early warning result and an operation and maintenance optimization advice; and displaying an online monitoring real-time process, pushing an intelligent monitoring early warning result and the operation and maintenance optimization advice in a display process, carrying out statistics on fault information and an operation record, and generating and outputting an intelligent statement. By use ofthe method, maintenance and operation personnel can be assisted in mastering the operation state of the transformer in real time, warning information, the diagnosis result of intelligent monitoring early warning and the maintenance and operation optimization advice are pushed in time, and the method has a revolutionary meaning for the development of the field of intelligent transformers.
Owner:HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD

Epoxypropane purifying method

The invention relates to an epoxypropane purifying method. The problems of low epoxypropane yield and large extractant loss due to the entrainment of epoxypropane and an extractant in the material flow from the top of an extraction distillation tower in the prior art are mainly solved. The method comprises the following steps: 1, a crude epoxypropane solution enters the extraction distillation tower to obtain a material flow 2 at the tower top and a material flow 3 at the tower bottom; 2, the material flow 3 enters a solvent recovery tower to obtain an epoxypropane product at the tower top and an extractant flow 5 at the tower bottom, and the flow 5 is divided into a flow 6 and a flow 7; 3, the material flow 2 is condensed, and the condensed flow 2 enters a phase splitter and undergoes oil and water separation to obtain an oil layer 8 and a water layer 9; 4, the oil layer 8 and the flow 6 return to the top of the extraction distillation tower; and 5, the flow 7 enters the lower portion of a water washing tower and the water layer 9 enters the upper portion of the water washing tower to obtain wastewater flow at the tower bottom and a flow 11 at the tower top, and the flow 11 enters the phase splitter. The method well solves the problems and can be used in the industrial production of epoxypropane purification.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for classifying sleep stages on basis of sleep EGG (electroencephalogram) signal detection

The invention relates to the field of identification of sleep EGG (electroencephalogram) detection signals and discloses a method for classifying sleep stages on basis of sleep EGG (electroencephalogram) signal detection. The method comprises steps as follows: (1), signal acquisition equipment is connected with a left frontal pole and a right frontal pole and is used for acquiring EGG signals, electrooculogram signals and lower jaw electromyographic signals; (2), filtering is performed, the signals are subjected to filtering processing through a low pass filter, and the signals with frequency higher than 50 Hz are cut off, and the signals with frequency lower than 50 Hz are allowed to pass; (3), the signals are subjected to frequency band division, and a time domain is subjected to band division processing with 30s as a unit; (4), characteristic values are extracted, energy of each frequency band is calculated, and an energy ratio is taken as a characteristic value of each frequency band. According to the method, a polysomnography is simplified through the acquisition equipment, then the acquired signals are processed, and the signals of the frequency bands are separated, so that which sleep stage a detected person is in is determined; the overall process is simple to operate, the analysis is automated, and the problem of insufficiency of equipment in a hospital can be effectively solved.
Owner:XILINMEN FURNITURE

Method and system for processing Internet data message

The invention discloses a method for processing Internet data message, and a system thereof, wherein a special mark field in the header of an IPv4 data message is examined to determine whether addressextension information exists; if the mark field of the address extension information exists, a 32-bit source address field and/or a 32-bit target address field in the header of the IPv4 data messageis bonded with the data bit of another field in the header of the IPv4 data message to form a source address or a target address more than 32 bits; the mark field is a special address extension option, and the option type code of the address extension option is an unused option type code value reserved in the IPv4 data message, with the total length up to 40 bytes. The technical proposal can realize a data message processing technology and an IP address proposal which remains fully compatible with the IPv4, uses length variable addresses and has 20 address extension levels. According to the invention, the existing IPv4 address as a 'zero-level extension address' is permanently effective, and the allocated and used IPv4 network and system can be continuously used for a long time, while theupgrade of the address is just to introduce a new and longer extension address. The invention adopts a mode of extending the address level by level and concurrently using multilevel addresses, thus coping with the worldwide IPv4 address exhaust in a better way and various changes encountered by the upgrade of Ipv4 technology.
Owner:孙斌

Client end and method for downloading application

The invention discloses a client end and a method for downloading an application. The client end comprises a scanning analyzing module, an address obtaining module, an address analyzing module and an information showing module, wherein the scanning analyzing module is suitable for scanning and analyzing a two-dimensional code corresponding to an application to be downloaded and obtaining a downloading address of the application; the address obtaining module is suitable for visiting the downloading address and receiving a destination address of the downloading application sent by a network server; the address analyzing module is suitable for analyzing the destination address, detecting whether carrying a unique identifier of the application, uploading the unique identifier to a third party server, and requesting application details of the application; and the information showing module is suitable for detecting whether the client end meets an application installation condition according to application detail information when the application detail information sent by the third party server is received, and displaying the application detail information and reminding the user of carrying out installation selection if the client end meets the application installation condition. According to the invention, the problems of large downloading possibility of the traditional application downloading mode, and resource waste caused by incapability of meeting the user anticipated demand by the downloaded application are solved.
Owner:BEIJING QIHOO TECH CO LTD

Shearing control method and control device of disc shear

ActiveCN101441462ALow failure rateStable and efficient failure rateShearing machinesNumerical controlCircular discFailure rate
The invention relates to a shearing control method and a shearing control device for circle shears. The method comprises the following steps: when the head of a steel strip reaches the front parts of entrance pinch rolls, a command sender takes the entrance pinch rolls as a speed command body to send a shearing and biting speed command; when the head of the steel strip reaches a main cutting edge, the command sender takes the main cutting edge as the speed command body, maintains the shearing and biting speed, and controls the entrance pitch rolls to follow and be synchronous with the linear speed of the main cutting edge; and when the head of the steel strip reaches exit pitch rolls, the command sender takes the main cutting edge as the speed command body to send an acceleration command, controls the main cutting edge to speed up to achieve the shearing speed required in a high-speed shearing command within 0.5 to 2 seconds, and controls the exit pinch rolls to follow and be synchronous with the linear speed of the main cutting edge. The control method and the control device effectively reduce instantaneous impact loads withstood by all mechanical parts at the time of biting, prolong the service life of shearing equipment, reduce maintenance cost, reduce the failure rate of a clamping chute at a cutting edge, and improve equipment stability and utilization rate.
Owner:SGIS SONGSHAN CO LTD +1

Bamboo fiber reinforced polylactic acid composite material used for 3D printing and preparation method for bamboo fiber reinforced polylactic acid composite material

ActiveCN104927320AImprove the shortcoming of brittle fractureRaise the ratioAdditive manufacturing apparatusPolymer sciencePlasticizer
The invention discloses a bamboo fiber reinforced polylactic acid composite material used for 3D printing and a preparation method for the bamboo fiber reinforced polylactic acid composite material. The material is a co-mixture comprising modified bamboo fibers, polylactic acid, polypropylene, a compatilizer and a plasticizer. The invention further provides the preparation method for the bamboo fiber reinforced polylactic acid composite material, wherein the preparation method comprises the following steps: preparing the modified bamboo fibers; co-mixing the bamboo fibers, the polylactic acid, the polypropylene, the compatilizer and the plasticizer by a high-speed mixer to form co-mixed materials; fusing, co-mixing, extruding and pelletizing the co-mixed materials by a twin-screw extrusion method, and repeating the extruding twice; processing the composite material particles into monofilaments by a single screw extruder after drying. According to the bamboo fiber reinforced polylactic acid composite material, on the basis of keeping the excellent performance of the polylactic acid, elongation at break and impact resistance of the material are improved. The method is more liable to realize industrialization, and the material has unique color of natural bamboo fibers, and color master batch is not required to add in a processing process for coloring.
Owner:琪恒泰新材料科技(深圳)有限公司

Method for preparing graphene-quantum-dot-doped organic-solvent-resistant ultrafiltration membrane, ultrafiltration membrane prepared by method and application of ultrafiltration membrane

The invention discloses a method for preparing a graphene-quantum-dot-doped organic-solvent-resistant ultrafiltration membrane, the ultrafiltration membrane prepared by method and application of the ultrafiltration membrane. According to the method, graphene quantum dot nanoparticles are added in the preparation process of a polymer polyimide ultrafiltration membrane, and the graphene-quantum-dot-doped polyimide ultrafiltration membrane is modified by crosslinking with ethylenediamine to prepare the graphene-quantum-dot-doped organic-solvent-resistant polyimide ultrafiltration membrane. The graphene quantum dots are used in the preparation process of the ultrafiltration membrane for forming an organic / inorganic hybrid membrane, the quantum effect of the graphene quantum dots is fully used, flux of the prepared ultrafiltration membrane is increased significantly, the mechanical properties of the membrane are significantly improved, organic solvent resistance of the membrane is greatly enhanced, and the retention rate basically keeps stable; and the preparation method is simple in process, and low in cost, and has good application prospects in industrial organic solvent system separation.
Owner:OCEAN UNIV OF CHINA

Catalyst for directly preparing low-carbon olefin from microspherical synthesis gas, as well as preparation method thereof

The invention relates to a catalyst for directly preparing a low-carbon olefin from a microspherical synthesis gas, and is mainly used for solving the problems that the existing co-precipitation Fischer-Tropsch catalyst preparation technology comprises the following steps: firstly co-precipitating and then pulping and spray-forming, so that the slurry is substantially a non-homogenous body dispersed by adopting a physical method, the finial catalyst finished product is uneven and the hydrocarbon products on the catalyst are widely distributed. The problems are well solved by adopting the technical scheme that the preparation method comprises the following steps: firstly precipitating a part of components, then carrying out peptization on the obtained precipitates by using the salt solution of non-precipitated components to obtain chemically evenly dispersed sol, then spray-drying the sol, and then roasting at high temperature. The preparation method can be used for industrial production for a catalyst for synthesizing the low-carbon olefin from the synthesis gas. The catalyst is applicable to but not limited to such reactors as a fluidized bed and a slurry-state bed in which catalyst grains are required to be distributed according to the certain distribution rule.
Owner:CHINA PETROLEUM & CHEM CORP +1

Automatic sorting system and automatic sorting method for express delivery

The invention relates to an automatic sorting system, and discloses an automatic sorting system and an automatic sorting method for express delivery. The automatic sorting system for the express delivery comprises a common word library, a road database, an interest point database, a history delivery database, a delivery data correcting module, a keyword extracting module, a keyword database and an automatic station identifying module. The automatic sorting method comprises the following main steps: keyword database modelling, address scanning and station matching. The invention provides the automatic sorting system and the automatic sorting method for the express delivery, wherein by adopting the automatic sorting system, the identification of delivery stations of the express delivery can be automatically completed without manual interference, sorting of transfer stations and terminal stations of the express delivery can be realized, very high accuracy can be ensured, the problems of easy error occurrence, misoperation, time and labor wasting and the like in a traditional manual sorting method or a semi-automatic sorting method in the express delivery industry are solved, automatic sorting by computers and machines is realized, and the sorting efficiency of the express delivery industry is greatly improved.
Owner:ZHEJIANG BAISHI TECH
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