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

In various embodiments, a flow selector of a fluid flow control system may be used to select a flow rate of a fluid. When the system is in an electronic mode, an encoder may electronically encode the fluid flow selection. A controller may receive the electronically encoded flow selection and transmit a corresponding control signal to an electronic valve to allow the fluid to flow at the selected flow rate. An engagement device, such as a clutch, may disengage the flow selector from a mechanical valve when the fluid flow control system enters a manual mode. When the system is in a manual mode, the engagement device may engage the flow selector with the mechanical valve, allowing the flow selector to directly control the flow rate of the fluid through the mechanical valve. Applications to gases and anesthesia delivery are disclosed herein. Various alternative components and embodiments are described herein.

The invention relates to a quick virus enrichment method and a quick virus enrichment device for an environmental water sample. The sample solution is separated into permeating solution and concentrated solution by adopting direct current filtration and laminar separation enrichment technology; and after the concentrated solution is circularly concentrated, the big water sample is concentrated into a small concentrate sample and then can be used for laboratory detection. The device comprises primary and secondary filter assemblies, a laminar enrichment assembly, a peristaltic pump and a programmable logic controller (PLC) and the like, wherein the secondary filter assembly has back flushing function. The cleaning problem of an internal pipeline is taken into full consideration; and a filter membrane and a filter element are disposable, so cross contamination of samples and growth and propagation of microbes in the pipeline can be avoided. The method and the device are particularly suitable for concentrating the big water sample into the small concentrate sample on site for laboratory detection.

A furnace slurry supply device for an industrial boiler burning petroleum coke slurry, especially suitable for fuel supply for industrial boilers burning petroleum coke slurry, including a daily slurry storage tank, at least one slurry supply pump and at least one Petroleum water coke slurry spray gun, the daily slurry storage tank is equipped with a slurry supply pipeline, the daily slurry storage tank is connected to the inlet of the slurry supply pump through the pipeline, and the outlet of the slurry supply pump is connected to the petroleum water coke slurry spray gun through the pipeline. A filter is installed on the connecting pipeline between the slurry tank and the slurry supply pump, and a preheater is also installed on the connecting pipeline between the slurry supply pump and the petroleum water coke slurry spray gun, and the petroleum water coke slurry spray gun is connected with an atomized petroleum water Steam intake pipe for char slurry fuel. The inner and lower sides of the daily coke storage slurry can also be equipped with a stirrer. The device has a simple structure, no hard deposits in the fuel supply, stable and reliable operation, stable, reliable, sufficient and perfect combustion of the sprayed petroleum water coke slurry, and the exhaust gas is convenient for environmental protection treatment with minimal environmental pollution.

The invention discloses an impulse-type quantified oil injection method and device. A constant-pressure oil storage tank is connected with a piston feeding bin through one oil conveying pipe. A first electromagnetic valve is arranged on the one oil conveying pipe. The piston-type feeding bin is connected with a nozzle through the other oil conveying pipe. A second electromagnetic valve is arranged on the other oil conveying pipe. A piston which makes contact with the inner wall of the piston-type feeding bin in a sealed mode is arranged in an inner cavity of the piston-type feeding bin. The piston is connected with the left end of a lead screw through a rolling bearing. The right end of the lead screw stretches out of the piston-type feeding bin and is in sleeved connection with a toothed nut. The toothed nut is connected with a gear through a toothed belt. The gear is connected with an output shaft of a stepping motor. A left sensor and a right sensor which detect the left limiting position and the right limiting position of the piston are arranged on the piston-type feeding bin. The left sensor, the right sensor, the first electromagnetic valve, the second electromagnetic valve and the stepping motor are respectively connected with an embedded controller. The stepping motor drives the piston to have the accurate displacement amount inside the feeding bin, the quantified oil injection can be selectively carried out according to the actual combustion condition inside a furnace, oil combustion waste can be reduced, and the combustion efficiency inside the furnace is improved.

The invention relates to a device for determining the verticality of honeycomb ceramics. The device comprises an upper laser emitter, a lower laser emitter, a first support, a vertical reference body, a rotary sample plate, a motor, an upper laser receiver, a lower laser receiver, a second support, a signal processor and a display unit, wherein the upper laser emitter and the lower laser emitter are connected with the first support in a sliding mode; the upper laser receiver and the lower laser receiver are connected with the second support in a sliding mode; the rotary sample plate is horizontally positioned between the lower laser emitter and the lower laser receiver; the motor drives the rotary sample plate to rotate through a transmission mechanism; the vertical reference body is vertical to the rotary sample plate and is positioned between the lower laser emitter and the lower laser receiver; and signal output ends of the upper laser receiver and the lower laser receiver are connected with a signal input end of the signal processor, and a signal output end of the signal processor is connected with a signal input end of the display unit. The device can be used for determining the verticality of the honeycomb ceramics with round, elliptic and rectangular cross sections, and the testing efficiency is quite high.

The invention provides a multistage multi-pump control method applied to a photovoltaic irrigation station. The multistage multi-pump control method applied to the photovoltaic irrigation station comprises the following steps: voltage values of photovoltaic cells are acquired; when the voltage values of the photovoltaic cells reach the start voltage, effectiveness of start signals is judged; afterthe start signals are judged to be effective, a self-adaption searching algorithm is adopted to calculate searching voltage with maximum power; searching control of MPPT maximum power is performed through the searching voltage, and an output frequency is calculated; tracking control and frequency outputting are performed through the output frequency; when solar energy exists, a first pump of first-stage pumps is controlled to start firstly; when the water pressure of water pipes of second-stage pumps is built, a first pump of the second-stage pumps is started; when energy is enough, a secondpump of the first-stage pumps is started; when the water pressure of the water pipes of the second-stage pumps is built again, the second pump of the second-stage pumps is started, and all water pumpsare started in sequence; and when the energy is insufficient, the second-stage pumps are stopped, and then, the first-stage pumps are stopped until all the pumps are stopped. The multistage multi-pump control method applied to the photovoltaic irrigation station is stable and reliable in system and high in utilization rate of the solar energy.

The invention discloses a garbage derived fuel (RDF) pyrolysis gasification system, which belongs to the field of urban domestic garbage treatment. It mainly includes a feeding device, a waste heat boiler and a cold slag system; it is characterized in that it also includes a pyrolysis gasifier and a high-temperature separator, and a fluidized bed is arranged at the bottom of the pyrolysis gasifier; The pyrolysis gasifier is connected to the pyrolysis gasifier, the pyrolysis gasifier is connected to the waste heat boiler through a high temperature separator, and the cold slag system is connected to the pyrolysis gasifier and the slag discharge device of the waste heat boiler respectively. The invention has simple structure and reliable operation, and realizes resource utilization, reduction and harmless treatment of municipal domestic garbage. The invention is mainly used for the treatment of municipal solid waste.

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.