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821results about How to "Long cycle" patented technology

Multi-dimensional intelligent remote inspection system for transformer substation

ActiveCN110707823AAvoid silosExtend the cycle of comprehensive inspectionsCircuit arrangementsSustainable buildingsSmart surveillanceEmbedded system
The invention discloses a multi-dimensional intelligent remote inspection system for a transformer substation, which adopts independent networking and receives various operation information of a station end integrated automation system, and is in communication connection with a video center main station to obtain remote view data, remote measurement data, remote control data and remote signaling data; the dispatching center SCADA main station system is in data communication with the station end integrated automation system and receives various kinds of operation information of the station endintegrated automation system; and the video center main station is also in data communication with the dispatching center SCADA master station system to provide real-time video verification for remotecontrol operation of the dispatching center SCADA master station system. According to the invention, a powerful intelligent monitoring and emergency command platform is provided for production linksand security links such as remote control operation and remote equipment inspection of scheduling personnel, field operation and emergency disposal of operation and maintenance personnel and the like,can be suitable for actual application of power production, and ensures safe operation of power grid production.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO

Artificial three-segment cultivating Paris Chinensis method

A method for manually-cultivating three-stage Rhizoma Paridis belonging to the technical field of agriculture includes primary seedling planting and raising, secondary seedling planting and raising, Rhizoma Paridis cultivation and field management, wherein, the primary seedling planting and raising includes the steps of presprouting of seeds and seed seedling raising, when tubers weigh 2g after 3 years, transplantation can be carried out. The secondary seedling planting and raising includes the steps that: the primary seedlings with 2g of tubers are transplanted in October and last third of November and transplantation can be carried out when the tubers are 15g after 3 years. The steps of Rhizoma Paridis cultivation and field management are that: the secondary seedlings are transplanted according to the proportion of 21,000 seedlings in per acre in October and last third of November, and mature Rhizoma Paridis can be dug after 3 years; farmyard manure is fertilized once or twice every May and last third of August with the amount of 3000kg per acre every time, or carbamide is fertilized or foliar fertilizer is sprayed for three times in the vigorous growth period; in the non-seed-collecting filed, ovaries are picked off after sepals unfold; commercial pesticide is used for preventing plant diseases and insect pests in the growth period of the Rhizoma Paridis. The method for manually-cultivating Rhizoma Paridis is characterized by less investment, early effect, good harvest, high efficient, etc., which can realize major production.
Owner:YUNNAN ACAD OF AGRI SCI

Steam stripping method of process condensate in CO conversion

The invention relates to a steam stripping method of process condensate in CO conversion. The invention is characterized in that the process condensate firstly enters the upper part of a carbon dioxide steam stripping tower for flashing evaporation; secondary steam from the upper part of an ammonia-evaporated steam stripper tower enters the bottom part of the carbon dioxide steam stripping tower and steam strips carbon dioxide by countercurrent contacting with the process condensate after flashing evaporation; the process condensate after flash evaporation and the steam stripped carbon dioxide carry out countercurrent contact; the process condensate after flash evaporation and steam stripping enters the upper part of the ammonia-evaporated steam stripper tower from the bottom part of the carbon dioxide steam stripping tower and is steam-stripped by low-pressure steam entering from a kettle of the ammonia-evaporated steam stripper tower; gas phase is treated by secondary condensation to obtain non-acid-coagulated gas and condensate sewage; and steam stripping water is obtained from the bottom part of the ammonia-evaporated steam stripper tower. The invention carries out steam stripping on the upper and lower towers to carbon dioxide and ammonia in the process condensate respectively, thus avoiding the possibility of coexistence of carbon dioxide and ammonia in a condensing system, effectively solving the problem that the steam stripping system of the process condensate in the conversion procedure occurs ammonium salt crystallization blockage and prolonging the period of stable operation of a conversion device.
Owner:CHINA PETROCHEMICAL CORP +2

Process for producing starch sugar

The invention discloses a process for producing starch sugar. The process comprises the following steps of: pulp-conditioning edible starch; liquefying; passing liquefied starch through a primary floating clarifier, guiding an upper floating sugar dreg liquid into a primary buffer tank, and then entering a primary disc-type centrifuge to be centrifugated and separated so as to extract sugar dregs; combining a clear sugar liquid flowing out of the primary disc-type centrifuge and a clear sugar liquid flowing out of the primary floating clarifier and flowing into a saccharifying tank to be saccharified into a saccharified liquid; passing the saccharified liquid through a secondary floating clarifier, guiding an upper floating sugar dreg liquid into a secondary buffer tank, and then enteringa secondary disc-type centrifuge to be separated so as to extract sugar dregs; combining a clear sugar liquid flowing out of the secondary disc-type centrifuge and a clear sugar liquid flowing out ofthe secondary floating scum clearing device and filtering by passing through a membrane micro-filtration system; and flowing a micro-filtered concentrated liquid containing dregs back to the secondary buffer tank, entering a micro-filtered clear sugar liquid into an ion exchange system to be decolorized and desalted, and then finally concentrating into a product. According to the process for producing the starch sugar disclosed by the invention, filter aids and activated carbon are not required in the clarification and the filtration processes, and high-purity sugar liquid can be obtained through the efficient operation of solid-liquid separation equipment; and meanwhile, sugar dregs without the filter aids and the activated carbon are extracted and can be used as a feedstuff raw materialfor animals, thereby changing waste into valuable, and no discharge of filtered solid wastes during the whole process exists.
Owner:双桥(厦门)有限公司

18-month feed replacement method for 1-million kW unit of China voltage water pile nucleus power station

The present invention is suitable for stack core fuel management field of pressureized water reactor, provides a method for changing fuel of million kilowatt machine set of Chinese pressureized water reactor nuclear power plant for eighteen months. The method includes the steps as follows: in the first circulation, improving the enrichment degree of original reactor core fuel component, and changing arrangement mode of burnable poison, as well as reaching a circulation length of eighteen mouths during the first circulation; in the behind circulation, to improve the enrichment degree of the fuel component further from the second circulation, and transferring into a balance circulation rapidly, by means of changing fuel for each eighteen mouths, and only changing fuel component of one second to one third reactor core, and placing new fuel component within the reactor core, the burn-up fuel component is placed outside the reactor core. The method implements a circulation length of 473 equivalent days at full capacity, and prolongs circulation period and improves fuel consumption, as well as implements completely low neutron leakage load in the behind circulation, and has quite supernal economical efficiency and working flexibility.
Owner:DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT

High-precision focus detection device for long-focus lens

The invention discloses a high-precision focus detection device for a long-focus lens, which comprises a laser, a microscope objective, a pin hole, a first Ronchi grating, the long-focus lens to be detected, a second Ronchi grating, ground glass and a CCD (Charge Coupled Device) camera. Light emitted by the laser passes through the microscope objective and the pin hole to form a divergent beam and the divergent beam enters the first Ronchi grating and then passes through the long-focus lens to be detected and the second Ronchi grating; the second Ronchi grating is placed at a certain talbot-order position of the first Ronchi grating, so that Moire fringes can be formed on a talbot image of the first Ronchi grating and the second Ronchi grating; and the fringes are acquired by the CCD camera and the focus of the lens to be detected can be obtained by calculating angles of the fringes. The high-precision focus detection device has a simple structure, is easy to implement, has high precision, can be used for detecting the long-focus lens and accurately measuring the focus in an optical system and particularly can be used for accurately measuring the focus of the large-caliber long-focus lens (the focus is in the range of meters and dozens of meters), so that an error caused by the scanning detection is avoided.
Owner:ZHEJIANG UNIV

Artificial wetland system taking oyster shell-waste brick-zeolite as composite filler

The invention discloses an artificial wetland system taking oyster shell-waste brick-zeolite as composite filler. The invention relates to a sewage treatment device, and discloses an artificial wetland ecological treatment device applicable to the treatment of various sewages such as domestic wastewater, livestock and poultry breeding wastewater and landfill leachate. The system disclosed by the invention comprises a vertical undercurrent artificial wetland device and wetland filler, wherein the wetland filler is implemented in a large particle size grading difference 'obverse and reverse particle size mixing' filling mode and taking oyster shell, waste bricks and zeolite which are large in specific surface area, good in nitrogen and phosphorus adsorption capacity and high in volume of organism holding, so that the sustainable, efficient and stable operation of an artificial wetland ecosystem is ensured. The artificial wetland system disclosed by the invention has the advantages of low cost, low energy consumption, high nitrogen and phosphorus removal efficiency, small land-occupied area, simple structure, convenient operation management and the like, is not easy to jam, and can be combined with ecological construction and urban greening functions.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Refueling method for fuel assemblies of reactor core of PWR (pressurized water reactor) nuclear power plant

The invention is applicable to the field of fuel management on reactor cores of pressurized water reactors, and provides a refueling method for fuel assemblies of a reactor core of a PWR (pressurized water reactor) nuclear power plant. The method comprises: classifying the fuel assemblies of the reactor core into three enrichment areas according to different enrichment degrees; in an initial cycle, respectively adding 8, 12 and 16 burnable poison rods into the fuel assemblies, and according to a cycle length of 18 months, placing the fuel assemblies with high enrichment degree outside the reactor core, and placing the fuel assemblies with low enrichment degree in the reactor core, wherein the enrichment degrees of the fuel assemblies of an initial reactor core are respectively 3.9%, 3.1% and 2.0%; and in subsequent cycles, starting from a second cycle, and rapidly transitioning the subsequent cycles to an equilibrium cycle according to an enrichment degree of 4.45%, wherein a mode of 18-month refueling is adopted, and the fuel assemblies of 1 / 2-1 / 3 of the reactor core are replaced every time; meanwhile, placing the new fuel assemblies in the reactor core, and placing the fuel assemblies which are burned outside the reactor core. By using the refueling method provided by the invention, the cycle period is extended, the fuel consumption is improved, and the purpose of completely low neutron leak loading is achieved in the subsequent cycles.
Owner:GUANGDONG NUCLEAR POWER JOINT VENTURE

Three-dimensional vibration insulation and reduction device and method

The invention discloses a three-dimensional vibration insulation and reduction device and method. According to the three-dimensional vibration insulation and reduction device, horizontal vibration is insulated through a rubber support on the lower portion, and vertical vibration of vertical rail transit is insulated through a vertical vibration insulation device on the upper portion. The horizontal rigidity of the rubber support is small, under the action of an earthquake, transfer of the earthquake action to an upper building structure is reduced, and thus, horizontal vibration is insulated. The vertical vibration insulation device adopts disc spring sets, the vertical rigidity is small, and under the action of ground vertical vibration waves caused by metro operation, transfer of vertical vibration to the upper building structure is stopped. Meanwhile, through the deformation and reset processes of the disc spring sets, vertical vibration applied to the structure is reduced, a part of vibration energy is consumed through friction resistance, thus, the structure is stressed more reasonably, the structure safety is guaranteed, and accordingly vertical vibration of vertical rail transit is insulated. The three-dimensional vibration insulation and reduction device has the characteristics of being simple in structure, stable in vibration insulation and reduction performance, reliable and durable.
Owner:杨维国

LeakView leakage control and management system for urban water supply pipe network

The invention discloses a LeakView leakage control and management system for an urban water supply pipe network. The control and management system comprises a partitioned management system, a leakage noise online monitoring system and a water hammer early warning and monitoring system, the partitioned management system makes the water supply pipe network to form a partitioned management mode from the factory-leaving water yield, first-level partition, second-level partition, DMA to user terminal multi-level water units, all the water units are scientifically managed through a water balance test, a pressure control strategy with the optimal water saving effect and the optimal economic matching performance is made through a response mechanism of the leakage of the water supply pipe network to the pressure, leakage noise is monitored on line by using terminal noise monitoring equipment instead of leakage detection by manual listening, the noise is displayed in the form of data, a region where the leakage is suspected to exist is found through comparative analysis of the key data, the water hammer early warning and monitoring system adopts a transient flow pressure fluctuation situation of a network system to be combined with a big data technology, and therefore the rapid change of the pressure of the pipe network system can be monitored on line, an alarm for the abnormal pressure change situation can be given in real time, on-line early warning can be realized, the data can be deeply excavated and analyzed, and water hammer protection can be made.
Owner:水联网技术服务中心(北京)有限公司

System and method for monitoring total nitrogen and total phosphorus of water body

The invention discloses a system and a method for monitoring total nitrogen and total phosphorus of a water body. The system comprises an automatic sampling control device, a digestion device and a total nitrogen and total phosphorus color-developing flow path, wherein the automatic sampling control device is connected with the digestion device, and an injection pump provides powder to drive a solution to flow; channels of an eight-channel selecting valve are connected with the digestion device, a phosphorous color-developing agent, the total nitrogen and total phosphorus color-developing flow path and a spectrograph correspondingly; the total nitrogen and total phosphorus color-developing flow path consists of a liquid storage pipe and the injection pump. By the method, a certain amount of digestion liquid is absorbed into the liquid storage pipe sequentially after digestion is finished, the total nitrogen and total phosphorus are measured sequentially, and pipelines and the digestion device are cleaned automatically after measurement is finished. By virtue of the system and the method, the total nitrogen and total phosphorus can be digested on line and can be measured on line. The system and the method have the advantages of convenience in operation, reliable performance, high sensitivity, high selectivity, low reagent consuming amount and the like.
Owner:常州市盛立泓环境科技有限公司
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