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48results about How to "Broad market application prospects" patented technology

Wind-power-station power output counterbalance system and working method thereof

The invention relates to a wind-power-station power output counterbalance system which comprises a wind speed acquisition and conversion circuit, an actual wind-power-station analog module, a differential amplifying circuit, a comparison circuit, a control circuit, a current transformer and a superconducting magnetic energy storage device, wherein the superconducting magnetic energy storage device comprises a chopper, a wave filter and a feedback circuit. The working method of the wind-power-station power output counterbalance system comprises the following steps: (1) converting a wind signal into an electric signal; (2) producing a signal which has the same output variation law as the actual wind power station; (3) processing by the differential amplifying circuit; (4) performing the circuit comparison with the power signal output by the superconducting energy storage device; (5) and controlling the conduction of a triode in the current transformer, and outputting power of the multiple superconducting energy storage devices. The invention has the advantage of storing the electric energy by utilizing the superconducting magnet, thereby greatly enhancing the energy storage density, reducing the energy consumption and realizing the synchronous inhibition on the power output fluctuation of the wind power station.
Owner:STATE GRID CORP OF CHINA +1

Online explosive-proof electromagnetic ultrasonic detection system and method of corrosion thickness decrease of oil and gas pipeline

The invention belongs to the field of electromagnetic ultrasonic detection, in particular to an online explosive-proof electromagnetic ultrasonic detection system and method of corrosion thickness decrease of an oil and gas pipeline, and the explosive-proof electromagnetic ultrasonic detection system consisting of an explosion-proof box, a high speed data acquisition module, an excitation module,an infinite transmission module and an explosive-proof electromagnetic ultrasonic transducer is employed. The system is utilized to excite out an ultrasonic transverse wave in a pipeline being detected, and the transverse wave is propagated in the thickness direction of the pipeline; the ultrasonic wave reflected by the inner wall of the pipeline is received in a self-transmitting and self-receiving manner, and the thickness of the pipeline is calculated by the propagation time of the ultrasonic wave in the pipeline and the calibrated wave velocity; and the thickness data of the pipeline is transmitted to a server in real time in a wireless transmission manner, and therefore, online detection of corrosion thickness decrease of the pipeline under an explosive environment is realized.
Owner:LASER RES INST OF SHANDONG ACAD OF SCI

Process and device for removing ash of high-temperature electrostatic precipitator by sectional spraying coupling with water film flushing

The invention relates to a process and a device for removing ash of a high-temperature electrostatic precipitator by sectional spraying coupling with water film flushing. The device is characterized in that a last-stage electric field ash removing manner is that the sectional spraying and a continuous water film are coupled to enable efficient ash removing, and cathodic and anodic vibrating ash removing systems are saved; a composite anode plate with high surface water film forming property is used as an anode; a clean water tank is used as a water source of a water film flushing system; a main water film flushing tube is firmly welded to a plurality of anodic water distributing tubes to form an independent pipe network; the clean water tank is used as the water source of a spraying flushing system, and a plurality of branch tubes are welded in a fishbone form at two sides of each main spraying flushing tube; water film flushing liquid flows through the surface of the composite anode plate by water outlet holes in the bottom parts of the anodic water distributing tubes so as to completely flush away ash particles deposited on the surface of the anode plate, and then the water film flushing liquid flows into a sewage tank; the liquid in the sewage tank is separated through a horizontal screw centrifuge; the clean liquid is pumped into the clean water tank, and the sludge is recycled; the spraying amount and starting frequency of the spraying flushing pipe network are set based on the principle that the instantaneous smoke humidity variation is controlled to be 0.5 to 2%.
Owner:SHANDONG UNIV

Preparation method of adsorbent based on municipal sludge

The invention discloses a preparation method of an adsorbent based on municipal sludge. The preparation method comprises the following steps: 1) with municipal sludge produced in a municipal sewage treatment process as a sludge raw material, adding calcium oxide, charcoal, fly ash and humic acid into the sludge raw material to form a mixture, and carrying out heating pretreatment; 2) adding N,N-dimethylformamide and Ce-Ni oxide into the pretreated material, conducting uniform stirring to form a mixture, heating the mixture to 120 +/- 5 DEG C in a nitrogen atmosphere, adding hexadecyl dimethyl benzyl ammonium chloride into the mixture after the temperature is within the temperature range, conducting continuous stirring at a constant temperature of 120 +/-5 DEG C after charging is completed, and then performing air-cooling to normal temperature to obtain a mixed material; and 3) adding magnesium oxide, zinc oxide and ferric oxide into the mixed material, uniformly stirring the mixed materials, carrying out heating, preserving heat, and conducting air-cooling to normal temperature after heat preservation to obtain the adsorbent. Compared with an adsorbent in the prior art, the adsorbent prepared by the method has more excellent adsorption activity, and nitrogen and phosphorus elements in sewage can be effectively removed.
Owner:江西中江环保集团股份有限公司

Electromagnetic wave reverberation chamber

The invention discloses an electromagnetic wave reverberation chamber and solves the problem that an existing electromagnetic wave laboratory cannot meet high field intensity and system level test requirements. The electromagnetic wave reverberation chamber comprises a horizontal stirrer and a vertical stirrer. The horizontal stirrer comprises a horizontal rotating shaft and at least one group offolded blades, wherein each group of folded blades are in a V shape, and forms an opening angle in the direction vertical to the horizontal rotating shaft. The shaft of each group of folded blades isvertical to the horizontal rotating shaft; and the horizontal rotating shaft passes through the center of the each group of folded blades. The vertical stirrer comprises a vertical rotating shaft andat least one group of tooth blades. Each group of tooth blades forms an opening angle of 90 degrees, has tooth edges, and opens in the horizontal direction. The shaft of each group of tooth blades isvertical to the vertical rotating shaft. One end of the shaft of each group of tooth blades is fixedly connected with the vertical rotating shaft. The electromagnetic wave reverberation chamber effectively solves the problem of a lot of equipment level and system level electromagnetic compatibility assessment and improves technical level and test capability.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT

Jatropha curcas extract insecticidal sustained-release gel and preparation method thereof

InactiveCN110731352APotential for large-scale commercial application promotionIncrease productionBiocideAnimal repellantsZoologyAlkaloid
The invention provides jatropha curcas extract insecticidal sustained-release gel, and belongs to the technical field of biotechnology. The jatropha curcas extract insecticidal sustained-release gel is prepared from the following raw materials in percentage by weight: 15.6%-34.2% of jatropha curcas leaf alkaloid extract, 20.5%-30.2% of a bio-based macromolecular carrier, 30.5%-52.2% of water, 1%-5% of a cross-linking agent and 1%-3% of an auxiliary dispersing agent. The preparation method comprises the following steps: (1) adding the 20.5%-30.2% by weight of the bio-based macromolecular carrier and the 1%-3% of the auxiliary dispersing agent into the 30.5%-52.2% by weight of water; performing ultrasonic stirring at the temperature of between 20 and 30 DEG C, freezing in a refrigerator fora period of time, taking out, unfreezing, repeating the same method for 2 to 4 times, centrifuging at the speed of between 8000 and 10000 revolutions per minute for 30 to 60 minutes to remove bubbles,and standing for 20 to 30 minutes to obtain a clarified solution; and (2) adding the 15.6%-34.2% by weight of the jatropha curcas leaf alkaloid extract into the clarified solution at 20-30 DEG C, adding the 1%-5% by weight of the cross-linking agent while stirring, stirring for 3-5 minutes, and standing at 20-30 DEG C for 3-5 hours to obtain the slow-release gel.
Owner:凉山德农生物能源股份有限公司

High-precision voltage regulation type constant current source system suitable for strong inductive load

The invention discloses a high-precision voltage regulation type constant current source system suitable for a strong inductive load. The high-precision voltage regulation type constant current sourcesystem comprises an MCU, an AD/DA module, a switching power supply, a constant current source circuit, a compensation capacitor C and a feedback divider resistor. The MCU is connected with the DA module and is used for generating a reference voltage signal; the DA module is connected with the constant current source circuit and is used for converting the reference voltage signal into a current signal through the constant current source circuit; the constant current source circuit is internally provided with a high-precision sampling resistor connected with the AD module, and is used for converting the current signal into a measurement voltage signal through the high-precision sampling resistor and sending the measurement voltage signal to the AD module for analog-to-digital conversion; the compensation capacitor C is respectively connected with the switching power supply, the constant current source circuit and the feedback divider resistor and is used for compensating the phase of aloop formed by the switching power supply, the constant current source circuit and the feedback divider resistor; and the switching power supply is connected with the feedback divider resistor, the switching power supply is connected with the constant current source circuit, and the switching circuit maintains the source voltage of a constant current source circuit adjusting tube to be constant through the feedback divider resistor.
Owner:ZHEJIANG SCI-TECH UNIV
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