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477 results about "Construction design" patented technology

Method of manufacture of low water peak single mode optical fiber

The present invention directs to a method of manufacturing low water peak single mode optical fiber, which comprises performing deposition in a substrate tube using PCVD technology, whereby a deposited layer of a certain construction design is formed on the inner wall of the substrate tube, melt contracting the substrate tube into a solid core rod according to melt contraction technology, producing an optical fiber preform by combining the core rod and a jacket tube of low hydroxyl content by means of RIT technology or by depositing an outer cladding on the outer surface of the core rod using OVD technology, sending the optical fiber preform into a fiber drawing furnace to draw it into an optical fiber, wherein: in the PCVD technology, the content of impurities in a gas mixture of raw materials, which is characterized by the infrared spectrum transmissivity thereof, is required to a transmissivity of 90% or greater, the water content in O2 is 100 ppb or less, the water content in C2F6 is 1000 ppb or less, the hydroxyl content of the substrate tube is 1000 ppb or less, the dynamic leak rate of a deposition machine is 1.0×10−5 mbar·l/s or less; during melt contraction of the substrate tube, the dynamic leak rate of a melt contraction machine is 1.0×10−5 mbar·l/s or less; the hydroxyl content of the jacket tube of low hydroxyl content is required to be 10 ppm or less; the relative humidity of environment during the process of manufacture is 25% or less; the ratio of the cladding diameter to the core layer diameter (b/a value) in the waveguide structure of the optical fiber is from 2.0 to 7.0.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Mechanical and electrical installation engineering construction method based on BIM platform and measuring robot

ActiveCN104499714AAccurate Construction StakeoutBuilding material handlingQuality levelArchitectural engineering
The invention relates to a mechanical and electrical installation engineering construction method based on a BIM (Building Information Modeling) platform and a measuring robot. According to the method, a mechanical and electrical integral pipeline BIM model and the measuring robot are used. The method has the main characteristics that 1, a design result is optimized, and the actual dimension condition of an on-site building structure is fed back into the mechanical and electrical integral pipeline BIM model in a three-dimensional data form, so that the construction design is optimized, and the construction mistake is reduced; 2, precise and efficient positioning and sampling of on-site mechanical and electrical pipeline and equipment installation is performed through the measuring robot by using three-dimensional data information in the mechanical and electrical integral pipeline BIM model, so that the construction process is optimized, the construction efficiency is improved, and meanwhile, high construction quality is ensured; and 3, the construction site data is collected by using the measuring robot, the auxiliary construction acceptance can be realized through the comparison between measured data and design data, and the quality level of the construction result is enabled to meet the design requirements.
Owner:THE SECOND CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU

System and method for maintaining air inflatable mattress configuration

A system and method for maintaining an air inflation mattress configuration sufficient for patient support and comfort. Infrared illumination levels are measured within individual or groups of inflated mattress chambers. A staggered approach to illumination monitoring of chambers or sections to eliminate crosstalk between the infrared sensors is carried out. Distributed microprocessor controllers established in a network configuration utilizing controller network protocols reduces the wiring and connections necessary for the assembled system. Various mattress cushion construction techniques, such as sewing and or RF welding methods, are used for the creation of individual chambers utilizing specific types of IR translucent, transparent or reflective materials. The construction of the cushions and bladders in the system includes the use of various types of fabrics with low to high air loss qualities as required. The overall mattress assembly, including the control systems and the methodologies associated with such control systems, provide a unique approach to the maintenance of a consistently comfortable patient support surface. The use of a handheld unit for both programming the system and downloading information about the operation of the system is also anticipated. The specific cushion construction designs associated with the head, body, and foot cushion components of the mattress are tailored to operate specifically with the control capabilities (sensors and air flow regulators) of the invention.
Owner:HUNTLEIGH TECH LTD

Physical simulation system and method for fracture propagation in shale

The invention discloses a physical simulation system and method for fracture propagation in shale. The system comprises a drilling rig, a sealing machine, a machine tool, a true triaxial physical simulation testing machine, a hydraulic fracturing servo pump pressure control system, acoustic emission three-dimensional space location monitoring equipment and an industrial CT (computed tomography) machine, wherein the drilling rig, the sealing machine and the machine tool are jointly used for processing acquired shale into a fracturing sample; the true triaxial physical simulation testing machine is used for loading simulated three-dimensional ground stress to the fracturing sample; the hydraulic fracturing servo pump pressure control system is used for providing a fracturing fluid for the fracturing sample, so that a hydraulic fracturing process can be simulated; the acoustic emission three-dimensional space location monitoring equipment is used for monitoring the simulated hydraulic fracturing process in real time; the industrial CT machine is used for preforming tomography scanning on the fracturing sample before and after hydraulic fracturing. The physical simulation system for fracture propagation in the shale can be used for researching fracture initiation, expansion and extension laws of anisotropic shale in the hydraulic fracturing process, so that fracture information can be distinguished more accurately, high-precision basic data are provided for fracturing construction design, technical support is provided for site fracturing construction, and the yield is increased.
Owner:CHINA PETROLEUM & CHEM CORP +1

Information management method and system based on electromechanical integrated BIM (building information model)

The invention discloses an information management method and system based on an electromechanical integrated BIM (building information model). According to the method, a comprehensive deepening graph is modeled by utilizing three-dimensional graphics software so as to generate three-dimensional models, and the generated three-dimensional models are exported as VRP (virtue reality platform) model data to constitute basic model data; the VRP model data is directly imported into a VRP editor, parameters and positions of corresponding parts and components in the model, structural information of applicable places, electromechanical comprehensive deepening planar graphs and correspondence documents during deepening process are input, and links with corresponding three-dimensional models are established; the three-dimensional models are displayed via a man-machine interaction device, and information or documents in a database is displayed in a switched manner according to the links; and meanwhile, the parameters of the parts and components, and the positions of scenes of real-time pictures are checked through a navigator. The invention further provides an information management system based on the electromechanical integrated BIM, which can be applied to an overall project implementation phase by various construction design units, and has the characteristics of interactivity, visualization, informatization, parameterization, flexibility and confidentiality.
Owner:CHINA CONSTR IND & ENERGY ENG GRP CO LTD

Production method of figured cloth different from embroidery characteristics

The invention discloses a method for manufacturing jacquard fabrics different from embroidering properties, which comprises the following steps of specification design, pattern design, weaving preparation, weaving on a machine, and sorting of finished products, wherein the step of pattern design is to read target patterns of the jacquard fabrics to be manufactured into a computer, to adjust and position the position of the patterns on the fabrics according to the dimension of the finished products, to set a plurality of colors for the patterns, to merge the colors, and to manufacture an electronic pattern card through picking combinational design, longitude and latitude density design and weave construction design; and the step of sorting of the finished products is to perform trimming on the floating length of weft threads on the reverse side of semifinished products which are off the machine. The jacquard fabrics produced by the method have good hand feeling, strong third dimension, high ornamental value, and distinct contrast between rugged figured pattern and refined bottom plates, achieve the embroidering style after being subjected to two procedures of jacquard weaving and jacquard trimming, is accurate to position the patterns, are more suitable to be used as family spinning fabrics such as curtains and back cushions compared with the prior jacquard fabrics, and have the characteristics of short manufacturing time and low production cost.
Owner:DALI SILK ZHEJIANG

Experimental device for simulating hydrofracture action mechanism in steam assisted gravity drainage (SAGD) process

The invention discloses an experimental device for simulating a hydrofracture action mechanism in the steam assisted gravity drainage (SAGD) process. The experimental device comprises a true triaxial stress loading device, a steam heating device, a fracture device and an acoustic emission monitoring device. The true triaxial stress loading device can apply stress in three directions to an experimental rock sample through a pressure chamber. The steam heating device locally heats the experimental rock sample through a hot steam circulation pipeline prefabricated in the experimental rock sample and monitors the temperature of the experimental rock sample through a temperature sensor arranged on the surface of the experimental rock sample. The fracture device injects fracturing fluid into the experimental rock sample through a shaft prefabricated in the experimental rock sample. The acoustic emission monitoring device monitors acoustic emission signals generated inside the experimental rock sample and determines the crack spatial position through a corresponding positioning algorithm. By the adoption of the experimental device, the SAGD hydrofracture process under a high-temperature and high-pressure condition is simulated, and thus true and effective evaluation and reference are provided for hydrofracture construction design of a thickened-oil oilfield.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Method and system used for evaluating overbreak and underbreak of tunnel

The present invention provides a method for evaluating overbreak and underbreak of a tunnel. The method comprises the following steps that the tunnel is scanned, point cloud data of the tunnel is obtained, and the point cloud data is preprocessed so as to obtain preprocessed data; basic data in the preprocessed data is extracted and compared with calibrated data in a construction design document,and the first evaluation result is obtained; overbreak data of the tunnel are calculated and obtained according to the preprocessed data and compared with the control standard, and the second evaluation result is obtained; according to the preprocessed data, the underbreak data of the tunnel is calculated and obtained and compared with the control standard, and the third evaluation result is obtained; the first evaluation result, the second evaluation result and the third evaluation result are comprehensively processed so as to obtain the final evaluation result. The method and system used forevaluating overbreak and underbreak of the tunnel can be used for evaluating overbreak and underbreak of the tunnel, the calculated overbreak data and the calculated underbreak data are compared withthe control standard, and tunnel engineering is evaluated.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1

Reverse modeling method for structural design parameters of tread patterns

The invention relates to a reverse modeling method for structural design parameters of tread patterns. The reverse modeling method comprises the steps that point cloud data attributes of a tire are obtained, the data attributes are analyzed, and a model reconstruction system is built; the conversion from 3D tread point cloud to a point cloud mapping matrix is conducted with the tread point cloud obtained through optimized segmentation as an object and a grid as a primary unit; according to the point cloud mapping matrix, the point cloud of a tire tread is segmented and extracted; the pattern boundary feature information is extracted, a pattern profile curve is constructed; according to the pattern profile curve, the permissible approximate error and the length and the number of segments ofmachining features are adjusted, so that pattern reconstruction optimization is achieved. By means of the reverse modeling method, the pattern construction design information can be quickly and efficiently recovered, the intelligence degree of the structural design of the tread patterns is improved, the types of basic patterns in a pattern rule base are perfected, and it is very instructive to complete the synergetic improvement in the multidimensional characteristics of the tire by improving the pattern structure forms.
Owner:GITI RADIAL TIRE (ANHUI) CO LTD +1

Guided capture, creation, and seamless integration with scalable complexity of a clock specification into a design flow of an integrated circuit

A clock integration method, tool, and a computer program product that captures, creates, and seamlessly integrates a clock specification to achieve a correct-by-construction design flow of a semiconductor product, such as an ASIC, from a partially manufactured semiconductor platform. The clocking elements of the design flow are combined and displayed to a chip designer in a plurality of context-driven user interfaces and views. Within each view, the details of the clock specification are presented in the context of the information to guide a chip designer to make relevant and correct determinations, e.g., if the context is a high level overview of the logic of the intended semiconductor product, then only the high level parameters, such as source, frequency, path of the clocks signals through the high level modules, etc. are seen. When a chip designer wants more or less detailed information, she/he need only zoom in/zoom out through the plurality of views of the design flow. Each view can combine the logical, structural, architectural, cost, timing, and other features of the clock in a particular context. A user can zoom in all the way to select and manipulate the circuit elements of a PLL, a clock factory element, etc. as in the creation or generation of a clock for the intended semiconductor product. The user can then zoom out and the clock integration method and tool herein determines how changes in selected muxed clock signals and/or elements affect other clocks in the same or other modules and/or the same clock in other modules. Creating, inserting, and integrating clocks for a complex integrated circuit has never been easier.
Owner:BELL SEMICON LLC

Augmented reality lofting system and implementation method based on BIM technology

The invention discloses an augmented reality lofting system and method based on a BIM technology. The method comprises the steps that a construction site is located in a positioning and tracking rangeof a positioning device, and a standard ruler is used for measuring and positioning the working space of the positioning device and establishing a measurement coordinate system; coordinates of key design positions A/B/C in the measurement coordinate system are determined respectively; coordinate transformation parameters of a construction design coordinate system which is converted to the measurement coordinate system are determined; the coordinate conversion parameters are utilized to conduct coordinate transformation on a BIM model, then the BIM model after subjected to coordinate transformation is loaded into augmented reality equipment, and when a user wears the augmented reality equipment on the head to observe the construction site, the BIM model is displayed in the construction site and all the key design positions of the BIM model overlap with all key construction positions of the construction site one to one respectively. By means of the method, the mapping relationship of the construction site and the BIM model can be accurately determined so that a BIM three-dimensional design result of a design unit can be accurately superimposed on the construction site by using an augmented reality technology.
Owner:廖卫东 +2

Rainwater penetration collection device based on concrete-sand-based water-permeable bricks

The invention relates to a rainwater penetration collection device based on concrete-sand-based water-permeable bricks. The invention belongs to the field of construction design. The invention is characterized in that: pedestrian walkways and squares are paved by using concrete-sand-based water-permeable bricks; rainwater enters the concrete-sand-based pavement water-permeable bricks and cover-plate water-permeable bricks, and is filtered by a gravel bedding layer and a crushed stone bedding layer; rainwater enters a rainwater collection ditch through the water-permeable bricks of a ditch wall of a rainwater-collection thin ditch side wall; the rainwater is then gathered to a water storage tank on the square and is used as a landscape or used for irrigation. The device is characterized in that screened and processed desert sand is used as a main aggregate; high-grade cement is adopted as an adhesive; and proper additives are added. Frustum-shaped water-permeation holes are provided on brick bodies, and anti-slip stripes are arranged on the brick body. The device provided by the invention has the advantages that: desert sand is sufficiently utilized; the strength is high, and cost is low; the water permeability is good, and the water-permeation holes are prevented from blockage; the device is safe and comfortable; a good rainwater collection plane which is the square is sufficiently utilized; and rainwater processing is simple and feasible.
Owner:DALIAN UNIV OF TECH

Ultra-deep sandstone fracture network transformation evaluating method based on heat-fluid-solid coupling effect

ActiveCN110005389AEnrich the evaluation theory of retrofit volumeReduce induced stressSurveyFluid removalStress distributionPorosity
The invention discloses an ultra-deep sandstone fracture network transformation evaluating method based on a heat-fluid-solid coupling effect. The ultra-deep sandstone fracture network transformationevaluating method comprises the following steps that physical parameters of a reservoir are obtained; distribution of fluid pressure in a fracture, the fracture length, the fracture width and the quantity of fluid filtered to the reservoir are calculated; reservoir pore pressure distribution after the unit discrete time is calculated; temperature distribution in the reservoir is calculated; stressdistribution after full coupling is calculated; the porosity and the permeability after the stress effect are solved through stress distribution; meanwhile, by combining the conversion relation of the stress to normal stress and shear stress of a natural fracture face, the force-bearing condition of the natural fracture face is obtained; and finally, whether the natural fracture is damaged or notand the kind of damage are analyzed. The ultra-deep sandstone fracture network transformation evaluating method is suitable for evaluating the fracturing transformation volume of an ultra-deep densesandstone gas reservoir fracture network, the blank aiming at numerical simulation study for evaluating the transformation volume of the ultra-deep dense sandstone gas reservoir fracture network is filled up, and a reliable prediction and evaluation method is provided for fracturing construction design of the ultra-deep dense sandstone reservoir fracture network.
Owner:SOUTHWEST PETROLEUM UNIV

Locally-embedded steel pipe concrete column type aseismatic bridge pier

InactiveCN104562922AReduced shear reinforcementImprove construction qualityBridge structural detailsBridge materialsNormal strength concreteReinforced concrete
The invention provides a locally-embedded steel pipe concrete column type aseismatic bridge pier, and belongs to the technical field of structural design of bridges. The aseismatic bridge pier comprises longitudinal ribs, stirrups, steel pipes, common strength concrete, high strength concrete and a bridge pier foundation. According to the bridge pier, a steel pipe concrete column is locally embedded to the reinforced concrete bridge pier, the advantage of high ductility of the common strength concrete bridge pier and the advantages of high pressure resistance, high shear resisting, high bearing capacity and high ductility of the steel pipe high strength concrete are fully utilized, and therefore, the shear resistance, the pressure resistance, the bearing capacity, the ductility and the energy consumption capacity of the bridge pier can be improved, the bridge pier can be avoided shearing damaging and bending conquassation, and as a result, the aseismatic performance of the reinforced concrete bridge pier can be effectively improved; the steel pipe concrete column is embedded in the local maximum force bearing range of the bridge pier, so that the purpose of the improving the aseismatic performance of the bridge pier is achieved, and the purpose of minimizing the cost of the bridge pier and the construction difficulty can be reached. The bridge pier can be widely applied to the field of bridge construction design.
Owner:DALIAN UNIV OF TECH

Business rule based method for auditing SCD (substation configuration description) files of smart substation

The invention discloses a business rule based method for auditing SCD (substation configuration description) files of a smart substation. The method comprises steps as follows: base model definition is performed, and model classes used for engineering template description are defined and comprise a smart device class, an input virtual terminal class, an output virtual terminal class, an input virtual terminal set class, an output virtual terminal set class, a virtual secondary circuit class, a virtual secondary loop group class, an interval class or a substation design scheme rule class; the model classes are applied, various engineering templates are defined according to requirements of relative standard regulations and specifications and typical design specifications of the electric power industry, and the definition of the various engineering templates specially comprises definition of a standard smart device template, definition of an interval type template and definition of a substation design scheme rule template; the SCD files are audited by various engineering templates. According to the method, various file errors can be checked out in advance after the substation engineering construction design is finished, and the auditing efficiency of the smart substation design is guaranteed.
Owner:STATE GRID CORP OF CHINA +3

Shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method

ActiveCN111322050AOptimization of the number of temporary blocking operationsQuick calculationSurveyFluid removalHorizontal wellsFracturing fluid
The invention discloses a shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method. The shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method comprises the steps that reservoir parameters, well completion parameters and fracturing construction parameters are obtained; a hydraulic fracturing fluid-solid coupling model is established by a displacement discontinuity method; a shale horizontal well segment inside close cutting temporary plugging fracturing crack propagation model isestablished; shale horizontal well segment inside close cutting temporary plugging fracturing crack geometric parameters are calculated based on the reservoir parameters, the well completion parameters and the fracturing construction parameters; and construction parameters are optimized based on the hydraulic crack geometric parameters after segment inside close cutting temporary plugging fracturing and temporary plugging operation results. By means of the shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method, the applicability of aclose cutting temporary plugging process in shale reservoir reconstruction is improved, and the purposes of optimizing the construction design and improving the development effect are achieved.
Owner:SOUTHWEST PETROLEUM UNIV
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