37results about How to "Reliable continuous operation" patented technology

The invention relates to a park energy-network energy optimizing management system based on microgrids and an implementing method of the system. The energy optimizing management system is implemented by park energy scheduling and microgrid energy management. The micro power grid management system is in a three-layered structure including a microgrid energy scheduling layer, a microgrid centralized control layer and a microgrid, stored energy and load local control layer. Constraint conditions of the energy optimizing management method are guaranteed by the microgrid centralized control layer. The output of each microgrid or stored energy is determined by a microgrid and stored energy coordination control policy in a microgrid central controller; and an objective function includes three objective function subsets at different grades. Through computing the objective function values at various states by a multi-objective optimizing algorithm based on weight, the defect of randomness and intermittence of the distributed power source is overcome, the complementary problem among multiple microgrids and multiple micro power sources in the microgrid in the park energy network is solved, and optimized utilization of clean energy and maximization of system energy efficiency can be achieved.

A turbine housing of an exhaust gas turbocharger with a variable turbine geometry is provided, having a support ring to which vanes are fastened which are adjustable for controlling the charge pressure, and having a covering ring for the vanes. The support ring and covering ring are spaced for forming a vane gap by spacing elements which are each penetrated by a holding element which is fastened in the support ring and/or the covering ring. The spacing elements have recesses which, during the operation of the exhaust gas turbocharger, permit a direct action of the exhaust gas flow upon the holding elements.

The invention discloses an RDF (refuse derived fuel) pyrolysis and gasification system and belongs to the field of urban domestic refuse treatment. The RDF pyrolysis and gasification system mainly comprises a feeding device, a waste heat boiler and a cold slag system, and is characterized by further comprising a pyrolysis and gasification furnace and a high-temperature separator. A boiling fluidized bed is arranged at the bottom of the pyrolysis and gasification furnace, the feeding device is connected with the pyrolysis and gasification furnace, the pyrolysis and gasification furnace is connected with the waste heat boiler through the high-temperature separator, and the cold slag system is connected with the pyrolysis and gasification furnace and a slagging device of the waste heat boiler. The RDF pyrolysis and gasification system has the advantages that the RDF pyrolysis and gasification system is simple in structure, reliable to operate and capable of achieving recycling, reduced and harmless treatment of urban domestic refuse and is mainly used for urban domestic refuse treatment.

The invention discloses a system and a method for continuously treating domestic sludge. The system comprises a spiral drying and carbonizing furnace and a rotary-bed pyrolysis furnace. A domestic sludge inlet is formed in one end of a spiral drying and carbonizing furnace body, a carbonized sludge outlet is formed in the other end of the spiral drying and carbonizing furnace body, a feeding zone, a primary drying zone, a secondary drying zone, a carbonizing zone and a discharging zone are sequentially formed in the body along the direction from the domestic sludge inlet to the carbonized sludge outlet, the various drying zones are provided with combustors, water vapor outlets are formed in the various drying zones, a combustible gas outlet is formed in the carbonizing zone, and a flue gas outlet is formed in the discharging zone; a spiral conveyor of the spiral drying and carbonizing furnace is arranged in the body along the direction from the domestic sludge inlet to the carbonized sludge outlet; a carbonized sludge inlet, a pyrolysis oil and gas outlet and a solid residue outlet are formed in the rotary-bed pyrolysis furnace, and a radiant tube is arranged in the rotary-bed pyrolysis furnace. The system and the method have the advantages that the domestic sludge can be pre-dehydrated by the system, accordingly, the quality of pyrolysis oil and gas can be obviously improved, and the oil and gas separation cost can be reduced; equipment can stably continuously run, and accordingly the system and the method are high in heat efficiency and have obvious economic benefits.

The present invention discloses a fluid flow control system and method thereof. The fluid flow control system comprises a first flow selector used to select a flow rate of a first fluid; a first encoder configured to electronically encode the selection made via the first flow selector; a first controller configured to transmit a control signal to a first electronic flow control valve to cause the first electronic flow control valve to allow the first fluid to flow at the selected flow rate; and a first engagement device configured to engage the first flow selector with a first mechanical flow control valve when at least one of the first encoder and the first controller is in a manual mode, such that the first flow selector is operable to manually control the flow of the fluid through the first mechanical flow control valve. The fluid flow control system of the present invention is higher in usability.

According to an adjustable traction transformer for a flexible through bilateral power supply system and an equalizing current suppression method, the voltage amplitude and the voltage phase are adjustable, and the zero-load voltage amplitude and voltage amplitude difference and phase difference of open loop points of no-load buses of two adjacent traction stations tend to be zero. Three windings in the high-voltage side of the first adjustable transformer are provided with first adjustable taps, windings on the low-voltage side of the first adjustable transformer are provided with second adjustable taps, and the voltage amplitude and the voltage phase angle of the first adjustable transformer are adjusted through the first adjustable taps and the second adjustable taps; three windings in the high-voltage side of the second adjustable transformer are provided with third adjustable taps, windings on the low-voltage side of the second adjustable transformer are provided with fourth adjustable taps, and the voltage amplitude and the voltage phase angle of the second adjustable transformer are adjusted through the third adjustable taps and the fourth adjustable taps; and the voltage amplitude and phase of the traction transformer are adjusted by adjusting the first adjustable tap, the second adjustable tap, the third adjustable tap and the fourth adjustable tap.

The invention discloses electrical equipment and a power fluctuation suppression method, device and system thereof. The electrical equipment power fluctuation suppression method comprises the steps ofobtaining the current DC bus voltage and the current DC bus current at a predetermined time interval; determining the current power variation according to the current DC bus voltage and the current DC bus current; judging whether the current power variation is greater than or equal to a predetermined power variation value or not; adjusting at least one of the current DC bus voltage and the current DC bus current in the case that the current power variation is greater than or equal to the predetermined power variation value so as to enable the current power variation to be less than the predetermined power variation value. The electrical equipment power fluctuation suppression method can prevent the energy impact through a power step fluctuation suppression technology, can avoid damages brought to the system by the step impact, and also can ensure reliable and continuous operation of the system.

The invention discloses a solar and biogas combined heat pump system which comprises a biogas supply system, a heat pump working medium circulation system, a solar energy utilization system and a tail gas heat recovery purification system, wherein the biogas supply system comprises a biogas digester, a biogas storage tank and a heater; the heater is arranged in the biogas digester; the heat pump working medium circulation system comprises a compressor, a condensing coil pipe, a throttling valve, an intermediate heat exchanger, a biogas internal combustion engine, a water tank, an air source heat exchanger, a four-way reversing valve, a first three-way valve and a second three-way valve; the compressor is driven by the biogas internal combustion engine; the solar energy utilization system comprises a solar energy collector, a water pump, a third three-way valve and a fourth three-way valve; the tail gas heat recovery purification system comprises the heater and a tail gas purification device. According to the system, cooling in summer, heating in winter and the supply of hot water are combined by utilizing a biogas driving mode, and the biogas digester is heated by tail gas produced by the combustion of biogas to promote the fermentation of microorganisms, so that the yield of the biogas is ensured, and the reliable and continuous running of the system is ensured.

The invention discloses an efficient bio-degradation filter reactor and a method for treating black odorous water bodies through the efficient bio-degradation filter reactor, and belongs to the technical field of sewage treatment. The efficient bio-degradation filter reactor comprises a reactor column, wherein a bioreaction zone and a deep filtration zone are arranged inside the reactor column from top to bottom, an isolation layer composed of a flaky material is arranged at a boundary between the bioreaction zone and the deep filtration zone, and light suspension filler with a particle size of 2-4 mm is arranged in the bioreaction zone; and large-specific-gravity filler with a particle size of 1.0-2.0 mm is arranged in the deep filtration zone, and the specific gravity of the filler in the deep filtration zone is 2.5-3 times that of the filler in the bioreaction zone. Biodegradation of organic matter, denitrification, phosphorus removal and removal of fine suspended solids are integrated into one by the reactor, and the reactor is applied to treatment of black odorous water bodies, so that the surface water bodies of a V class and an inferior V class are gradually improved into water bodies of a IV class or above, and the problem of pollution of the black odorous water bodies is solved fundamentally.

Computer kiosks include input/output devices interactive user applications for local users. The operation of the interactive user applications, input/output devices and other kiosk hardware are monitored by software modules resident thereon, with status reporting to a remote computer system. The remote computer system allows users to monitor the operation of multiple, geographically disparate computer kiosks, and to remotely input commands thereto. Analytics relating to kiosk and application usage can also be captured and reported.

The invention relates to a device for controlling a resonant bridge power converter. The signal input terminal of the device is connected with the signal output terminals of a resonance circuit and a load respectively, and the signal output terminal of the device outputs a control signal to a power switching tube; the input terminal of the power switching tube is connected with a DC (direct current) voltage source; the power switching tube, the resonance circuit and the load are connected in series; and a cycle measurement module and a timing module are arranged inside the device used for detecting the voltage and current waveform. The invention further discloses a method for controlling a resonant bridge power converter. By adding the cycle measurement module used for measuring the cycle of the change in the direction signal of the resonant current outputted by the resonance circuit and the timing module used for limiting the delay time, the invention can ensure that the limited delay time is smaller than half the oscillation period of the resonance circuit and the variable delay always ends before the direction of the resonant current is changed, thus preventing the variable delay module from repeatedly resetting.

The invention relates to a current limiting device and method, a direct-current power grid protection device and a direct-current power grid system. The current limiting device comprises an electronicswitch, a current limiting branch and a control branch, wherein the input end of the electronic switch is connected with one end, far away from a direct-current power grid, of a direct-current circuit breaker, the output end of the electronic switch is connected with a converter, the current limiting branch is connected with the electronic switch in parallel and used for limiting short-circuit current, and the control branch is connected with the electronic switch and is used for controlling the electronic switch to be turned off from on when the short-circuit fault of the direct-current power grid is detected, so that the short-circuit current flows through the current limiting branch. According to the current limiting device provided by the invention, by limiting the short-circuit current, the converter locking before the short-circuit current cutoff of the direct-current circuit breaker can be avoided, so that the reliable and continuous operation of a direct-current power grid system can be ensured.

The invention provides a device used for removing slag from an edible film. The device is mainly composed of a film crusher, a vibrating feeder, a wind blower and a granulator. The device is characterized in that the vibrating feeder and the wind blower are arranged between the film crusher and the granulator. According to the invention, mixed slag can be separated by winnowing and removed before edible film debris enters the granulator; pure edible film debris is sent into the granulator for granulating; and under the premise of improved product quality and efficiency, safe, reliable and continuous operation of a complete device which produces edible whole wheat flour is ensured.

The invention provides a slurry transmitting pump under vertical magnetic driving multiple sealing liquid. An upper separating sleeve, a guiding body shaft sleeve, a lower separating sleeve and an impeller are sequentially arranged from top to bottom on an axial guiding body segment of a pump shaft, blind holes are formed in the lower end surface of the upper separating sleeve and the upper end surface of the lower separating sleeve, the guiding body shaft sleeve is arranged inside the blind holes of the upper separating sleeve and the lower separating sleeve, a sliding bearing is arranged between an inner hole of the axial guiding body and the guiding body shaft sleeve, a sliding bearing pressing cover is arranged under the sliding bearing, the sliding bearing pressing cover and the end surface of the inner hole of the axial guiding body are connected, a leakage detecting device is arranged on the right side of a leakage detecting pipe, and a movable ring adjusting sleeve, a rotating ring, an axial sealing wheel and two round nuts C are sequentially arranged from top to bottom at the bottom part of the leakage detecting pipe of the pump shaft. The slurry transmitting pump is reasonable in structure, the vibration and the noise of the pump during operation are lowered, the stability and the reliability of the pump during operation are improved, the installing and the maintaining are convenient, the temperature of medium transmitted by the pump is improved, the service life of the bearing for the pump is prolonged, and the pump is 100% sealed without leakage.

The invention discloses a soapstock acidification wastewater treatment process. The process comprises the steps of dosing for removing hard flocculent precipitation, heating, centrifuging and removing floc, treating with a ceramic membrane, and evaporating at normal pressure for multi-phase separation. The method disclosed by the invention has the beneficial effects that the influence of grease, salt and the like in the soapstock acidification wastewater on a biochemical treatment process is avoided by adopting a multi-phase separation process of dosing for removing hard flocculent precipitation, a pre-heating centrifugal system, ceramic membrane filtration and normal-pressure evaporation; after flocculent precipitation and preheating centrifugation, suspended carclazyte (rich in a small amount of grease) is reduced to the maximum extent by adopting a ceramic membrane process, salt and glycerol in the wastewater can be effectively separated by adopting a normal-pressure evaporation multiphase separation process, and the whole process can be safely, stably and reliably operated; and industrial water supply is saved, waste resource utilization can be achieved through the whole scheme, and the environment-friendly and zero-emission requirements are met.