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239 results about "Structure modification" patented technology

STRUCTURES OF MODIFICATION. Structures of modification have two component parts, those are head (town, people, superior) and a modifier (home, hungry, easily). Both the head and the modifier which are the immediate constituents of a structure of modification may themselves be structures of more and less complexity.

Fuel cell pile online regional detection system and method

The invention relates to a fuel cell pile online regional detection system and a fuel cell pile online regional detection method. The detection system comprises piles, PCBs, a data acquisition device and a computer; the PCBs are arranged in the piles; the input end of the data acquisition device is connected with the PCBs; and the output end of the data acquisition device is connected with the computer. The detection method comprises the following steps that: a plurality of PCBs are adopted to replace single-body anode boards, and sealing is performed; hydrogen, air and water are led into the piles, so that the piles can work normally; after the piles can work normally, regional current density signals, temperature signals and single-body voltage signals measured by the PCBs are acquired by the data acquisition system, and data processing results are transmitted to the computer; and the computer converts received data into a two-dimensional distribution graph and displays the graph, and therefore, regional properties of the piles can be detected in an online manner. Compared with the prior art, the fuel cell pile online regional detection system and method of the invention are advantageous in basic avoidance of pile structure modification, a large number of detected performance parameters, intuitive display of measurement results, wide application and the like.
Owner:TONGJI UNIV

Three-dimensional model-based spacecraft assembly information modification system and modification method

The invention discloses a three-dimensional model-based spacecraft assembly information modification system and a modification method. The modification system comprises a three-dimensional model-based design and process modification data input module, a process digital prototype modification management module, a process file modification management module, an implementation modification management module and an actual state modification management module, wherein the three-dimensional model-based design and process modification data input module is used for starting the modification system and is responsible for inputting modification data from a design department and a technologist; the process digital prototype modification management module is used for updating a process digital prototype version, product structure modification data, model modification data and attribute modification data; the process file modification management module is responsible for modification management of process file related module data; the implementation modification management module is responsible for management implemented for assembly modification; the actual state modification management module is used for recording a technical state after modification. According to the three-dimensional model-based spacecraft assembly information modification system and the modification method, correlative control of the assembly state modification is realized through a related data interface to form a spacecraft assembly state modification data packet, so the spacecraft development efficiency and quality are improved.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG

Optimization design method for oil casing screwed-joint sealing structure

The invention discloses an optimization design method for an oil casing screwed-joint sealing structure. The optimization design method includes the following steps: 1), creating a parameterized geometric model of the special screwed-joint sealing structure; 2), creating a parameterized finite element model of the special screwed-joint sealing structure; 3), solving the finite element model, determining three optimization design elements, and creating an optimized mathematical model of the sealing structure; 4), performing design of experiments (DOE) on the optimized model, determining optimization solution settings, and solving the optimized model on experiment samples; 5), performing sensitivity analysis on design variables, and fitting a response surface model of sealing performance on experiment sample points; 6) selecting a proper optimization algorithm to perform iteration solution according to the response model; 7), modifying the sealing structure according to a solution result to acquire a structural optimization design result. The optimization design method has the advantages that a structural optimization design philosophy and a finite element analysis method are adopted, and accordingly, optimal design parameter combinations capable of meeting requirements of various working conditions can be achieved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Dual specifications toilet seat cover structure modification

The dual specifications toilet seat cover structure modification is to combine big seat, small seat and toilet seat cover with hinge; of which, the big seat has big aperture on its face as a seat hole for adult; the small seat has a small aperture on its face as a seat hole for baby and made keyhole positioning section at the protruding bottom of fixed end, and formed an arc gap at the outside end, support padding blocks are fixed at right and left bottom of this small seat; the toilet seat cover has a flute that is suitable for contour and thickness of small seat, moving catch is fixed at two sides of middle of the flute respectively, in addition, several keyholes are fixed at interior of the fixed end; Hinge is to fix lock bolt at right and left respectively and the down mounted connecting sheets in cascading mode, set several pairs of top mounted connecting sheets with isometric distance at middle segment; To lock up lock bolt with positioning hole of toilet seat, then connect the down mounted connecting sheet at outside position with the fixed end keyhole of big seat, its two top mounted connecting sheets at the most inner side connect the positioning keyhole of small seat, however, the two top mounted connecting sheets at middle connect the fixed end keyhole of toilet seat cover so as to make the lifting independent dual specifications toilet seat cover, and provide you a convenient and safe toilet seat cover.
Owner:LDR INDS
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