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359results about How to "Difficult to solve" patented technology

Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section

InactiveCN101534001AQuickly restore powerRestoration of power ensuresEmergency protective arrangements for automatic disconnectionFault locationElectricityThree-phase
The invention relates to a processing method for distribution network short circuit fault, in particular to a method for detecting the distribution network short circuit fault and restoring power supply in a non-broken-down section, and capable of achieving feeder line automatic local control. Short circuit fault detectors A (29) to M (41) are utilized for detecting the short circuit fault, and then reclosing time selection devices A (16), B (17), C (18) and D (19) are utilized for restoring power supply in the non-broken-down section. When short circuit happens, outlet switch A (1) or B (2) and C (2) protect the tripping in a relay way, and during permanent short circuit, the outlet switch A (1) or B (2) and C (3) protect the tripping of a second time in the relay way, a short circuit fault switch is pressed to achieve zero current tripping closedown, and a non-fault switch detects residual voltage cut-off and closedown for the second time. The outlet switch A (1) or B (2) and C (3) are coincided for the second time, so that the fault section is separated, the operation time limit of the non-fault switch is longer than the second reclosing time, three-phase normal voltage can be obtained, and the tripping no longer happens. As for the condition that the power is supplied by round network, one side of an interconnection switch (23) is deprived of electricity, non-fault switch for switching-on and tripping is delayed, and the voltage switching-on is detected in sequence.
Owner:江苏汉天星配电自动化科技有限公司

Control method and device of air conditioner, storage medium and air conditioner

The invention discloses a control method and device of an air conditioner, a storage medium and an air conditioner. The method comprises acquisition parameters collected by a data acquisition sensor carried by the air conditioner; and the acquisition parameters comprise at least one of the windshield target, the air guide plate position, the indoor heat exchanger temperature, the indoor relative humidity, the indoor temperature, the air outlet temperature, an air inlet temperature, an air outlet temperature, an outer machine complete machine current, an inner machine complete machine current and a running time; according to the collection parameters, the operation parameters of the air conditioner are determined; the operation parameters, which comprises at least one of the heat exchange,the complete machine power, the energy efficiency and the overall power consumption. According to the scheme, the power consumption of the air conditioner in the prior art can be solved, the problem that the operation difficulty is large due to the fact that more temperature sensors and pressure sensors which are not arranged in the air conditioner need to be additionally arranged in the calculation process of refrigerating capacity and energy efficiency, so that the effect of reducing the operation difficulty is achieved.
Owner:GREE ELECTRIC APPLIANCES INC

Automotive engine individually-customized system and method

The invention discloses an automotive engine individually-customized system and method. The method comprises the following steps of: S1, selecting an engine customized target and inputting customized information; S2, delivering the customized information to an engine customized database server; S3, generating engine ECU (electronic control unit) flash data correspondingly by the engine customized database server; and S4, calling the engine ECU flash data by utilizing an automobile fault diagnosis instrument, and flashing the engine ECU flash data into an engine ECU. The automotive engine individually-customized system and method provided by the invention can finish individual customization of an engine by utilizing an engine customized function of automobile diagnostic equipment, the management and application of an engine customized database are also supported, the engine individual customization procedure and data are subjected to storage and statistical analysis, and the equipment application efficiency is furthest improved; and meanwhile, a safe and reliable engine individually-customized system is established so as to effectively meet individual requirements of car users, car driving pleasure is improved and the requirement of saving oil consumption is met by customizing the engine, and the problem that an engine customizing technology is hard to popularize can be solved.
Owner:LAUNCH TECH CO LTD

Biological purification agent applied to sewage of livestock and poultry farms and preparation method thereof

The invention discloses a biological purification agent applied to sewage of livestock and poultry farms and a preparation method thereof. The preparation method comprises the following steps: firstlyadding a compound microorganism bacterium agent into an immobilized carrier formed by three carriers including sodium alginate zeolite, sodium alginate and polyvinyl alcohol to obtain a bacterium solution, wherein the mass ratio of the immobilized carrier to the compound microorganism bacterium agent is (200-300) to 1, the compound microorganism bacterium agent contains rhodospirillum, nitrifyingbacteria and bacillus subtilis according to a volume ratio of 1 to 1 to 1, and the number of effective living bacteria in per gram of the compound microorganism bacterium agent is greater than or equal to 109; then dropping the bacterium solution into a boric acid saturated solution with 4-8% of CaCl2 to obtain globular immobilized compound microorganisms; finally enabling the immobilized compound microorganisms to stand and cure under the condition of 4 DEG C, carrying out immobilized crosslinking for 24 hours to obtain immobilized microorganism globules, washing the immobilized microorganism globules with deionized water for at least three times to obtain the biological purification agent. The preparation method is simple and is low in cost; the prepared purification agent has strong stability, and high microorganism activity, is environmentally friendly, and is free of secondary pollution.
Owner:湖南领道农业科技有限公司 +1

Modular portable reverse osmosis seawater desalination integration apparatus and use method thereof

The invention relates to the field of seawater desalination, and concretely relates to a modular portable reverse osmosis seawater desalination integration apparatus and a use method thereof. The apparatus is characterized in that a water intake pump, a bactericide dosing device, a filter, an ultrafiltration membrane assembly, a circulating pump, a reducing agent dosing device, a scale inhibitor dosing device, a high pressure pump, a reverse osmosis membrane assembly, a post-treatment dosing system, a cleaning water tank and a foldable water storage bag form a reverse osmosis seawater desalination system, the above devices except the water intake pump, the cleaning water tank and the foldable water storage bag all are fixedly installed in a trailer box body, and the whole body is a reverse osmosis desalination module. A pretreatment unit, a reverse osmosis desalination unit, a chemical dosing unit, a chemical cleaning unit and an electric and control unit are compactly, stably and reasonably integrated in the trailer with a closed box body trough a filter + ultrafiltration + reverse osmosis double membrane process, so the apparatus has the advantages of small size, light weight, flexible movement, and realization of transportation through aviation, highway, railways and ships.
Owner:沈阳远大固废处理有限公司

Treatment equipment for recycling car washing waste water and automatic control system

The invention discloses treatment equipment for recycling car washing waste water and an automatic control system. The treatment equipment comprises a combined tank, an ozone generator, an ozone mixed disinfection tank and a recycling water tank, wherein the combined tank consists of an oil-removal grit tank, an anaerobic adjusting tank, a biochemical reaction tank and a flat-panel membrane bioreactor (MRB) tank; an aeration head and an aeration pipe are respectively arranged in the biochemical reaction tank and the flat-panel MRB tank; a flat panel membrane, a suction pipe and a suction hoseare arranged in the flat-panel MRB tank; a membrane cleaning medicine liquid storage tank is connected with the suction pipe; the inlet of a water inlet self-sucking pump is communicated with the anaerobic adjusting tank; the outlet of the water inlet self-sucking pump is connected with the biochemical reaction tank; a inlet of a water outlet self-sucking pump is connected with the suction pipe; the outlet of the water outlet self-sucking pump is connected with the inlet of the ozone mixed disinfection tank through a water outlet pipe; the outlet of the ozone mixed disinfection tank is connected with the recycling water tank; the ozone generator is connected with the water outlet pipe through a jet device; and the biochemical reaction tank is communicated with the anaerobic adjusting tankthrough a discharge pipe. The control system comprises an equipment field control module, a sub-control platform module for a car washing station, a remote main control platform module and a third-party remote monitoring platform module. The treatment equipment and the automatic control system can be applied to the field of recycling of the car washing waste water.
Owner:SHENZHEN HUIQING TECH

Molasses alcohol fermented mature mash multi-effect evaporation concentration integrated equipment and process

The invention discloses molasses alcohol fermented mature mash multi-effect evaporation concentration integrated equipment and process. The equipment comprises five effect evaporating pots, a separation chamber of the previous effect evaporating pot is communicated with a heating chamber of the next effect evaporating pot, and a mature mash pot is communicated with a heating chamber of the fourth effect evaporating pot; a heating chamber of the first effect evaporating pot is communicated with a condensing water collection pot, heating chambers of the second, third and fourth effect evaporating pots are communicated with a pure water collection pot, and a heating chamber of the fifth effect evaporating pot is communicated with an alcohol collection pot; a heating chamber of the third effect evaporating pot is communicated with a concentrated waste liquid collection pot. The molasses alcohol fermented mature mash multi-effect evaporation concentration integrated equipment has the advantages that a multi-effect differential pressure evaporation concentration system is used for replacing the alcohol separation extraction function of a mash tower, and can be used for concentrating residual waste liquid which can be used as boiler fuel after the residual waste liquid reaches a certain concentration, so that the fixed investment on equipment can be saved, energy consumption can be reduced, the production operation cost can be effectively reduced, and the problem of high difficulty in waste liquid treatment in molasses alcohol production process can be effectively solved.
Owner:NANNING KECHAO ALCOHOL TECH DEV
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