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172results about How to "Easy to overlap" patented technology

Method for optimizing steam distribution way of steam turbine

The invention relates to a method for optimizing a steam distribution way of a steam turbine, which is characterized by comprising the following steps: calculating a regulating stage characteristic curve according to the structure parameter of a regulating stage; measuring steam temperatures and pressures in the front of all regulating air valves, steam pressures behind the regulating air valves and steam temperature and pressure behind the regulating stage in the prior steam distribution way of the steam turbine and calculating to obtain steam flows passing through all corresponding regulating air valves; calculating to obtain starting areas of all the regulating air valves by combining steam pressure specific values in the front and the rear of all the regulating air valves, the steam pressures and the temperatures in the front of the regulating air valves, and the steam flows passing through the regulating air valves; randomly giving an overlapping degree value between every two regulating air valves and giving the steam temperature and the pressure in the front of the two regulating air valves and respective opening degrees to calculate the steam pressures behind all the regulating air valves, the steam pressure behind the regulating stage, the steam flows of all regulating air valves and the relative inner efficiency of the regulating stage; and selecting the optimal steam distribution way of the steam turbine according to the principle that the relative inner efficiency is maximal and a relation curve between the lifting range and the flows of a regulating air valvegroup is a straight line.
Owner:NORTHEAST DIANLI UNIVERSITY +3

Preparation method of ultrafine needle-like wollastonite modified spherical silicon dioxide composite powder

The invention relates to a preparation method of ultrafine needle-like wollastonite modified spherical silicon dioxide composite powder, wherein the method comprises the steps: treating high-quality needle-like wollastonite raw ore and quartzite raw ore to obtain needle-like wollastonite powder and spherical quartzite powder; adding a composite dispersing agent into the needle-like wollastonite powder and the spherical quartzite powder to prepare wollastonite powder slurry and quartzite powder slurry; and making the two slurries into a composite slurry, drying, depolymerizing and scattering, and carrying out surface modification by a composite modifier to obtain the special ultrafine needle-like wollastonite modified spherical silicon dioxide composite powder for an epoxy pouring sealant.The needle-like wollastonite powder and spherical silicon dioxide are subjected to superfine wet grinding, and then slurry compounding is carried out, so the problems of poor dispersity, low bonding strength, low adhesive strength and the like caused by single use of one kind of powder in the epoxy pouring sealant are avoided, the needle-like wollastonite powder and the spherical silicon dioxide are interspersed and accumulated in the pouring sealant, the dispersity and the suspension property of the powder are improved, the pouring sealant is compact in pouring, and the heat-conducting property of the sealant is improved.
Owner:JIANGXI GUANGYUAN CHEM

Turnover case and fixed angle connector

The invention relates to a circulating box and an angle fixing connecting piece for packing goods. The housing comprises six box plates such as a bottom plate, four side plates of periphery and an upper cover plate. The adjacent box plates are mutually perpendicular and the edge part of one box plate is overlaid and contacted with the end face of the other box plate. An angle fixing connecting piece is covered on the corner angles of the housing, and the angle fixing connecting piece is provided with two or three mutually connecting and mutually vertically extending connection plates. A plurality of connecting holes are arranged at the extending terminal of the connection plate to the plated surface and the corresponding box plate position. A nut with a claw is inserted in the internal end of the connecting hole of the box plate, and the screw of the bolt or the screw passes through the connecting hole of the angle fixing connecting piece and is matching-connected with the inner screw thread of the nut. The circulating box and the angle fixing connecting piece for packing goods has the advantages that the connecting structure is even and orderly, the nut, connection plate and the box plate are contacted in large area, so that the box plate and the connecting hole can not be destroyed, and the circulating box of high strength is formed, the box plate of convenient disassembly can be overlapped together conveniently, and the recovery volume and the turnover cost are reduced greatly.
Owner:郭泽和

Live wire monitoring and early warning system and method based on multiple laser radars

The invention relates to a live wire monitoring and early warning system and method based on multiple laser radars, and the system comprises a plurality of laser radars disposed on different surfaces of a bucket arm vehicle, and the plurality of laser radars are respectively connected with a plurality of data processing platforms. The plurality of laser radars are not intervisible, and each laser radar senses information in one direction; the data processing platform collects laser radar information, carries out multi-laser radar point cloud fusion according to the calibrated spatial position relation, and reduces the collected point cloud to a coordinate system with the center point of the bucket arm vehicle as the original point; the multiple laser radars calculate conversion parameters through external parameter calibration, and space synchronization of the multiple laser radars is achieved. According to the invention, in the live working environment of the 10 kv power transmission line, the live working safety distance of a worker can be measured and early warned, the safety condition of the working environment can be monitored, and the working environment can be visually monitored, so that the real-time management and control of a working site and the safety protection of the worker can be realized, and the safety level of live working can be improved.
Owner:YUXI POWER SUPPLY BUREAU OF YUNNAN POWER GRID
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