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31results about How to "Guaranteed advantage" patented technology

Method for deeply treating micro-polluted source water through in-situ enrichment, immobilization and acclimatization of indigenous microorganisms

The invention provides a method for deeply treating micro-polluted source water through in-situ enrichment, immobilization and acclimatization of indigenous microorganisms. In-situ enrichment and immobilization of the indigenous microorganisms are carried out in a stuffy aeration manner under an appropriate aeration condition by inoculating underwater bed sediment to be treated and water to be treated and adding nutrient elements; then, the immobilized microorganisms are gradually adapted to the water quality to be treated by arranging automatic water intake / discharge, gradually reducing the concentration of the nutrient elements in intake water and increasing the amount of intake / discharged water. The method disclosed by the invention has the following advantages: 1) under the stuffy aeration condition, loss of the microorganisms is avoided, multiplication of the indigenous functional microorganisms is accelerated, and the start time of the process is greatly shortened; 2) the multiplication of autotrophic nitrobacteria flora is preferably promoted by inoculating the underwater bed sediment having nitrobacteria flora of high abundance, adding ammonia nitrogen and reducing a carbon nitrogen ratio, and the diversity of the inoculated nitrobacteria flora is ensured by inoculating the underwater bed sediment having an appropriate depth, and therefore the operation stability of a system is promoted.
Owner:NANJING FRONTIER ENVIRONMENTAL TECH

Method and device for controlling decoupling guidance of rotary missile

The invention discloses a method for controlling the decoupling guidance of a rotary missile. The method comprises the following steps that 1) a racemization cabin section is arranged between the front cabin section and the rear cabin section of the rotary missile; 2) an inertia measuring element is installed in the front cabin section, so that an accelerometer of the inertial measurement elementand the sensitive axis of a gyroscope are parallel to each axis of the front cabin section of the rotary missile; 3) the three-axis angular velocity data and the acceleration data output by the inertia measuring element are collected and calculated through a control plate, and a rolling angle value coupled to the front cabin end is obtained; and 4) a motor in the racemization cabin section is controlled by calculating the difference between the rolling angle of the front cabin section and the set rolling angle, so that coupling among three channels namely, the yaw, pitching and rolling-rotation is reduced to the minimum, wherein the racemization cabin comprises a shell, a motor and a bearing are arranged inside the shell, shafts are arranged inside the motor and the bearing, slip rings arearranged inside the shafts, and one ends of the shafts are provided with structural connecting ports of the rear cabin section. And therefore, the problems that coupling of the yaw and pitching channels is strong in the existing rotary missile guidance, and the control is difficult are solved.
Owner:孙宏宇

Telescope system with seamless switch between pure optics and digits

The invention discloses a telescope system with seamless switch between pure optics and digits. After imaging an external environment image, an objective lens system enters objective lens light splitting through an optical inverted image, a beam splitter splits image object light into two beams, one beam is sent to an image sensor, the other beam is subjected to optical superposition with an image of a display screen of an displayed digital image through an ocular spectroscope after the object light strength is adjusted through an electronic light adjusting plate, and the superposed optical image is converted into a virtual image suitable for human eyes through an eye lens system, so that an environment image with high quality can be obtained through visual observation. According to the telescope system with seamless switch between the pure optics and the digits, a pure optical system and a high-end digital system are perfectly solved, the respective disadvantages of the pure optical system and the pure high-end digital system are perfectly combined, not only the advantages of the pure optical system are guaranteed, but also the advantages of the high-end digital system are improved, information sharing is achieved, and a target image is stored at the same time for subsequent use.
Owner:SHENZHEN DAKING OPTOELECTRONICS CO LTD

Numerical control turning method for multi-line trapezoidal threads

PendingCN113145867AGuaranteed advantageSolve the problem of precision branchingThread cutting machinesNumerical controlEngineering
The invention discloses a numerical control turning method for multi-line trapezoidal threads. The method comprises the following steps that S1, rough machining is conducted, specifically, programming is conducted by means of a G76 instruction, and rough machining is conducted by means of a thread roughing tool; S2, two side surfaces are sleeked; S3, precise line distribution of double-line trapezoidal threads is conducted, specifically, calling times of two subprograms are determined according to S2, the sum of left offset and right offset is enabled to be equal to Z-direction total offset, after a first thread is machined, a thread machining starting point is shifted by a thread pitch in a Z direction, and then precise line distribution of the double-line trapezoidal threads can be completed; and S4, precision machining of the multi-line trapezoidal threads is conducted. According to the method, the multi-line trapezoidal threads are machined on a numerically controlled lathe, the problem of precise line distribution during machining by a common lathe can be solved, the phenomenon of disordered threads during re-machining through an operation method of changing tools after tool breakage occurs can be effectively avoided, and the advantage of machining the multi-line trapezoidal threads through numerical control turning is guaranteed.
Owner:DATANG TAIYUAN CO GENERATION POWER PLANT

Flow mixing apparatus of viscous ammonium nitrate fuel oil explosives

The invention discloses a flow mixing apparatus of viscous ammonium nitrate fuel oil explosives. A mixing tube is of straight-through tube structure; the front of the mixing tube is provided with a reducing segment; the reducing segment is of front-rear symmetry; the diameter of the reducing segment decreases gradually from front to rear and then increases gradually; the top of the smallest part of the reducing segment is provided with a feed port; a glue storage container is arranged above the feed port; a discharge port at the bottom of the glue storage container is communicated with the feed port; the inner wall of the rear of the mixing tube is fitted with a guide plate that enables a viscous ammonium nitrate fuel oil explosive be backwardly conveyed in spiral form. The flow mixing apparatus of viscous ammonium nitrate fuel oil explosive has reasonable design and simple structure, is easy to implement and low in production cost, is applicable to the field real-time making of viscous ammonium nitrate fuel oil explosives before charging, ensures uniform mixing and high production efficiency, and allows only the materials of explosives to be directly mixed into viscous ammonium nitrate fuel oil explosives on site during the steps such as transport and storage such that the steps of transport and storage and the like are greatly less dangerous, and the advantages of viscous ammonium nitrate fuel oil explosives are ensured.
Owner:CHINA GEZHOUBA GRP YIPULI CO LTD

Push type environment-friendly propelling pencil

The invention provides a push type environment-friendly propelling pencil, and relates to the field of stationery. A push type environment-friendly propelling pencil comprises a pencil outer barrel, an inner barrel sliding assembly and a tail plug assembly, the pencil outer barrel is provided with a sliding groove and a column hole allowing a refill of the propelling pencil to pass through, and the column hole is communicated with the sliding groove; the inner cylinder sliding assembly comprises a cavity cover, a sliding body and a movement stopping body matched with the sliding body, and a cavity is formed in one end of the sliding body and can be matched with the cavity cover through a physical method; the tail plug assembly comprises a cutter body and a tail plug glued with the cutter body through environment-friendly glue. By the adoption of the automatic pencil lead discharging and collecting device, automatic pencil lead discharging and collecting can be completed more conveniently, integration of the automatic pencil and the pencil lead container is achieved, and the space utilization rate is increased; meanwhile, due to the fact that a pushing type refill discharging mode is adopted, the pencil refill can be fully utilized, and the environment-friendly aim is achieved.
Owner:彭晨辉

Cascade H-bridge STATCOM system without electrolytic capacitor and control method

PendingCN113078655AAchieve sharingSuppression of double frequency fluctuationFlexible AC transmissionAc-dc conversionCapacitanceActive power decoupling
The invention discloses a cascade H-bridge STATCOM system without an electrolytic capacitor and a control method, and belongs to the field of power electronic control. The system comprises a three-phase power grid, a three-phase reactive load, a filter inductor and N three-phase cascade Buck multiplexing type H bridges, and N is greater than or equal to 2; the Buck multiplexing type H bridge comprises an H bridge formed by switching tubes S1-S4, a decoupling inductor Lr, and two thin-film capacitors Cd and Cr, the Cr is connected to the midpoint of a second bridge arm of the H bridge through the Lr to form a bidirectional Buck circuit, and the bidirectional Buck circuit and the second bridge arm of the H bridge realize switching tube multiplexing; the midpoint of the first bridge arm of the H bridge is connected with the midpoint of the second bridge arm of the previous H bridge, and the three phases are in star connection. On one hand, the bidirectional Buck circuit carries out active power decoupling, H-bridge direct current side fluctuation power is transferred to an auxiliary capacitor Cr through Lr, so that H-bridge direct current side voltage double frequency fluctuation is eliminated, a thin-film capacitor replaces an electrolytic capacitor, meanwhile, an H-bridge first bridge arm is assisted to complete alternating current and direct current side power conversion, and the power density and reliability of the device are improved.
Owner:CHINA UNIV OF MINING & TECH

Method for additionally arranging path obstacles for multi-robot path planning

The invention relates to a method for additionally arranging path obstacles for multi-robot path planning. The method comprises the following steps of broadening a path planned by a previous path to an obstacle area O to obtain a route; when no intersection point exists between a head and O, indicating that the head can pass through; otherwise, arranging the projection values of the head and the Oon the x axis from small to large, and taking a judgment interval; storing the points of the values of the abscissas of all the points in the row and the previous path in the interval into a set B and a set C respectively, connecting the points at the two ends in the set C to obtain a line segment D, expanding to obtain Oi, judging according to the positions of the points in the set B and the Oi,and eliminating the path row if the points in the set B intersect with the Oi. The path planned last time is widened into an approximate wide curve composed of a plurality of rectangles, the approximate wide curve is an obstacle O, and no intersection point exists between the next robot and O during path planning. According to the method, the passable area can be effectively protected, a more favorable feasible area is provided for path planning of the subsequent robot, and the advantages of the subsequent robot in path planning are guaranteed.
Owner:ZHEJIANG UNIV OF TECH

Cascade H-bridge STATCOM system without electrolytic capacitor, and control method thereof

PendingCN113098027AAchieve sharingSuppression of double frequency fluctuationFlexible AC transmissionDc-dc conversionCapacitanceActive power decoupling
The invention discloses a cascade H-bridge STATCOM system without an electrolytic capacitor, and a control method thereof, and belongs to the field of power electronic control. The system comprises a three-phase power grid, a three-phase reactive load, a filter inductor and N three-phase cascade double-Buck multiplex H bridges, and N is greater than or equal to 2; each double-Buck multiplex H bridge comprises four full-control type switching tubes S1 to S4, two decoupling inductors Lr1 and Lr2, and three thin-film capacitors Cr1, Cr2 and Cd; the Cr1 is connected to the midpoint of a first bridge arm of the H bridge through the Lr1 to form a first bidirectional Buck circuit, the bidirectional Buck circuit and the first bridge arm of the H bridge realize switching tube multiplexing, the Cr2 is connected to the midpoint of a second bridge arm of the H bridge through the Lr2 to form a second bidirectional Buck circuit, and the bidirectional Buck circuit and the second bridge arm of the H bridge realize switching tube multiplexing; and the whole system adopts a star connection method. According to the invention, the multiplexing active power decoupling technology is utilized to eliminate the H-bridge DC side voltage frequency doubling fluctuation, so an electrolytic capacitor is replaced by a thin-film capacitor, and the power density and reliability of the device are improved.
Owner:CHINA UNIV OF MINING & TECH
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