2725 results about "Circulator pump" patented technology

The invention provides a high-efficiency compound regenerative electrical energy device. The device comprises a reactor, an anode chamber, an anode plate, a cathode chamber, a cathode plate, a proton exchange membrane module, a liquid distributor, a gas distributor, a purge distributor, a battery load, an output pump, a circulating pump, a heating / cooling device, a slurry pump, an air blower, a purge gas stop valve, a flow control valve, a magnetic flap liquidometer, a self-operated pressure-regulating valve, and an immersed pump. The gas distributor is disposed at the bottom of the cathode chamber, and the circulating pump is disposed in the middle of the reactor barrel. The air blower communicates with the gas distributor by the self-operated pressure-regulating valve, and the immersed pump is disposed at the bottom of the cathode chamber. The device uses the coupling mode of fuel cell and catalyst reactivation by means of the arrangement of air cathode fuel cell, is beneficial to improve the oxidation regeneration rate of the catalyst, and realizes the rapid regeneration of the complex catalyst.

The present invention is directed to a water making device that collects the moisture contained in the atmosphere and condenses it into high purity water. In one embodiment, moist air entering the water making / water cooling system flows across an air filter, then a precooler heat exchanger (where the air stream is cooled to or close to its dew point) and then a water extraction heat exchanger, where the air stream is cooled further and water is extracted. The water that leaves water extraction heat exchanger is collected in a water collection device and passes from there through a primary water filter into a water storage tank. The air stream then passes across a reheat heat exchanger and exhausted to the outside. A water circulation pump extracts water from the water storage tank and circulates the water stream through an evaporator of a vapor compression refrigeration system, where the water stream is chilled, then through the water extraction heat exchanger and precooler, where the incoming air stream is chilled by removing heat to the water stream. The water stream is then circulated through the reheat heat exchanger, where the water stream is again cooled by removing heat to the cool dry air exiting the water extraction heat exchanger. Finally, the cooled water stream is circulated through the water filter to a three way valve, that directs water flow either to a dispenser or back to the water storage tank.

A washing machine includes: a steam generator for generating steam; a circulation pump for pumping circulation water discharged from a tub and re-supplying it into a drum; a spray nozzle for spraying steam generated from the steam generator and the circulation water pumped from the circulation pump into the drum; and a back-current preventing branch unit connected to the steam generator by a steam supply line, connected to the circulation pump by a circulation line, and connected to the spray nozzle. With this structure, circulation water circulated by the circulation unit and steam generated from the steam generator are sprayed to the laundry through one spray nozzle, so that a system can be simplified and a fabrication cost can be reduced.

An energy recovery system and method using an organic rankine cycle is provided for recovering waste heat from an internal combustion engine, which effectively controls condenser pressure to prevent unwanted cavitation within the fluid circulation pump. A coolant system may be provided with a bypass conduit around the condenser and a bypass valve selectively and variably controlling the flow of coolant to the condenser and the bypass. A subcooler may be provided integral with the receiver for immersion in the accumulated fluid or downstream of the receiver to effectively subcool the fluid near the inlet to the fluid pump.

A water supply system, particularly for an aircraft such as a passenger aircraft, includes a disinfecting unit with an electrolysis cell connected in series with a water storage tank including a water distribution pipe system and a circulating pump. A bypass pipe with a valve permits connecting the electrolysis cell to the distribution system or bypassing the electrolysis cell. The electrolysis cell disinfects the water by anodic oxidation. A salt solution container may be connected to the electrolysis cell to enhance the anodic oxidation. The pump circulates the disinfected water through the tank and / or through the entire system, whereby the water supply is disinfected and the disinfected water in turn disinfects the entire system.

The invention relates to a high-heat-discharge-quantity refrigerating and heating temperature control system for a reaction kettle. The high-heat-discharge-quantity refrigerating and heating temperature control system comprises a reaction kettle, wherein one end of the reaction kettle is sequentially connected with a heating pipe, an electric proportioning regulating valve, a first cold storage tank and an evaporation heat exchanger through a fourth pipeline, the output end of the evaporation heat exchanger is sequentially connected with a first circulation pump, a first one-way valve, an expansion tank and an exhaust valve through a first pipeline, the exhaust valve is connected to the other end of the reaction kettle through a fifth pipeline, the two ends of the evaporation heat exchanger are connected with a refrigerating machine, the refrigerating machine is structurally characterized in that one end of the evaporation heat exchanger is sequentially connected in series with a gas-liquid separator, a compressor, an oil separator, a condenser, a drying filter, a second cold storage tank, an electromagnetic valve and an expansion valve through a third pipeline, the outer end of the expansion valve is connected with the other end of the evaporation heat exchanger through an eighth pipeline, the refrigerating machine is positioned between the electromagnetic valve and the second cold storage tank and is connected with the third pipeline through the second pipeline, and an electronic expansion valve is arranged on the second pipeline. The work reliability is good.

A thermal management system has a high temperature heat transfer circuit and a low temperature heat transfer circuit for modulating the temperature of heat-generating components having different operating temperatures. The heat transfer circuits are in flow communication and are interdependent so that a single circulating pump can be used to pump a liquid heat transfer medium through both circuits. One of the heat transfer circuits comprises a continuous loop and the other heat transfer circuit comprises an open loop having a first end and a second end at which it is in flow communication with the first heat transfer circuit. Each heat transfer circuit is provided with a heat exchanger to modulate temperature of the heat transfer medium.

The present invention belongs to the field of environment protection apparatus, and is especially void tower type desulfurizing process and apparatus for removing and recovering SO2 from fume. The apparatus includes one desulfurizing tower with fume inlet in the middle part, fume outlet in the top, absorbing and sprinkling section, dewatering and defogging section, and oxidizing section in the bottom; one primary and one secondary circulating pump outside the tower connected to the absorbing and sprinkling section and the oxidizing section; one thick liquid circulating pump outside the tower; one ammonium sulfate thickener; one centrifuger and one drier. The present invention has low cost and convenient apparatus maintenance and operation.

An integrated heater and control system for a pool or spa is described, and includes a housing structure. A heater assembly includes a burner and a heat exchanger, and is disposed within the housing structure. An electronic control system is mounted within or on the housing structure for controlling the heater assembly and pool or spa functions. In one exemplary embodiment, the control system distributes line voltage power and low voltage control signals to one or more external devices, such as a heater circulation pump and a valve.

The invention belongs to the field of environmental protection equipment, which relates to an ammonia desulfurization technology and a device utilizing high potential energy. The device comprises a desulfurizing tower, a concentrated crystallizing pool, an oxidation communication device, a low-level circulation pump, a high-level circulation pump, a crystal pulp pump and a centrifugal drying system which are positioned outside the tower; the desulfurizing tower is divided into an upper layer section and a lower layer section, and a gas cap through which only flue gas can pass is arranged between the upper layer section and the lower layer section; the lower layer section of the desulfurizing tower and the oxidation communication device are both provided with an oxidation gas distributor and an oxidation gas deflector; and spray heads are 2 to 4 layers. Under the precondition that normal desulfurization efficiency is ensured, the invention not only saves the investment but also reduces the running cost.

A peristaltic pump includes a conduit having a first end for receiving a fluid from a reservoir and a second end for delivering the fluid. A plurality of fingers are disposed at respective locations along a segment of the conduit and are configured to alternately compress and release the conduit at the locations. A cyclical pump mechanism is coupled to move the fingers between respective compressed and released positions in a spatio-temporal pattern so as to drive a predetermined quantity of the fluid through the segment of the conduit in each pump cycle. A motor is coupled to drive the pump mechanism. A controller is coupled to activate and deactivate the motor in alternation during each pump cycle with a duty cycle that varies within the pump cycle.

The invention relates to a method and a device for control on a central air conditioner cold water system based on tail end cold quantity active adjustment. The method comprises the following steps of when a system control strategy of an adjusting type temperature control value is adopted, firstly finding a tail end branch corresponding to the opening instruction maximum value Kmax of the adjusting type temperature control valve; then, enabling a central controller to control a frequency converter to synchronously adjust the rotation speed of an in-service cold water circulating pump, and then adjust and control the water supply pressure and flow quantity of the cold water system; and when the system control strategy of an on-off type temperature control valve is adopted, finding the maximum value of the valve opening instruction signal statistical value of an air conditioner room temperature controller in the system through comparing and calculation by the central controller, and judging if the system water pump needs to run at increased frequency or decreased frequency according to if the average value of n sampling arithmetic values is equal to 1 or not. The method has the advantages that through the analysis of the control strategy of the water pump of the existing air conditioner cold water system, the central controller adopts a comparing and control algorithm to control the state of the in-service water circulating pump in real time, the economic running of the cold water system of the central air conditioner system is realized, and the obvious energy-saving effect is realized.

The present invention provides apparatus featuring a signal processor or processing module that may be configured at least to: receive signaling containing information about calibrated motor speed and power data for a hydronic pumping system; and determine system pumping flow rate and pressure associated with an equivalent hydronic system characteristic variable, based at least partly on the signaling received. The signal processor or processing module may be configured to provide corresponding signaling containing information about the system pumping flow rate and pressure determined. The corresponding signaling may contain information used to control the hydronic pumping system.

This invention comprises a driven conveyor for transporting work pieces into one or more flood plating cells for electroplating a metal onto the planar surfaces and surfaces of the through holes of the work piece. An electrolyte solution is pumped by one or more recirculating pumps into the flood cell at such a rate as to maintain the liquid at a desired level covering the anodes and work pieces while work pieces are moved through the cells. One or more power sources provide direct current to the anodes and to the electrified contactors to transmit electrical current to the work pieces. The electrified contactors are positioned across the path of the work piece and spaced outside of the flood cell such that the electrolyte solution does not contact the contactors. Plating will occur so long as the work piece is in contact with one or more of the electrified contactors and the electrolyte.

A heat pump system is disclosed that utilizes a variable speed hydronics pump to selectively divert heat energy from a forced air heating system to a hydronics radiant heating system. By actively controlling the speed of the withdrawal of heat, the temperature of the forced air output may be maintained while maximizing the amount of heat delivered by the efficient hydronics system. The heat pump system also actively controls the blower of the forced air system. To reduce the frequency of the compressors cycling on and off, a tank may be used to store and dispense heat if the hydronics system is not of sufficient size.

A water heater includes one or a plurality of heat pumps that heat tap water or return water from a hot water supply part, a circulation line that supplies hot water heated in the heat pumps to the hot water supply part, and introduces the return water from the hot water supply part to the heat pumps, an incoming water pipe that joins to between the hot water supply part in the circulation line and the heat pumps and supplies the tap water, a circulation pump that returns the return water to the heat pumps and circulates the return water through the circulation line, and a control unit that controls operation or stop of the circulation pump according to driving operation time or elapsed stop time by linking a combustion process of the heat pumps.

Disclosed is a washing machine comprising a heating tank accommodating the washing and washing water; a heating part heating the washing water in the heating tank; and a circulation pump circulating the washing water in the heating tank. With this configuration, the present invention provides the circulation pump circulating washing water in the heating tank, thereby preventing the washing from oxidizing, improving a washing efficiency especially improving a washing efficiency according to washing material, and saving washing water. Further, water supply and drain can be easily performed.

The invention discloses a liquid-phase oxidation multistage absorbed flue gas desulfurization and denitrification technology and a liquid-phase oxidation multistage absorbed flue gas desulfurization and denitrification device, and belongs to the technical field of flue gas treatment. The technology comprises the following steps of: performing pre-desulfurization by contact reaction of flue gas and a desulfurizing agent which absorbs a part of sulfur dioxide in the flue gas to obtain desulfurized slurry; performing liquid-phase oxidation and partial absorption on the pre-desulfurized flue gas, and oxidizing nitric oxide in the flue gas into nitrogen dioxide; and performing contact reaction on the oxidized flue gas and the desulfurized slurry to absorb the nitrogen dioxide and the rest sulfur dioxide in the flue gas. The device comprises a desulfurization and denitrification tower and a tower kettle arranged at the bottom of the desulfurization and denitrification tower, wherein a first spraying layer, a sieve plate layer, a second spraying layer and a third spraying layer are sequentially arranged above the tower kettle from bottom to top; and the sieve plate layer is communicated with the second spraying layer through an oxidant slurry tank positioned outside the desulfurization and denitrification tower, and the first spraying layer and the third spraying layer are communicated with the tower kettle through external circulating pumps respectively. The technology is simple and high in desulfurization and denitrification efficiency during desulfurization and denitrification of the flue gas.

The invention discloses a thermal management system for low temperature starting of a fuel cell power generation system and a method thereof. The thermal management system comprises an internal circulating heating system and an external circulating cooling system. The internal circulating heating system is composed of a fuel cell stack, a fuel cell stack cooling liquid outlet sensor, an outlet tee, a water tank, a heater, an internal circulation pump, an internal circulation one-way valve, an inlet tee, and a fuel cell stack cooling liquid inlet sensor. And the external circulating cooling system consists of the fuel cell stack, the fuel cell stack cooling liquid outlet sensor, the outlet tee, the water tank, an external circulation pump, a radiator, an external circulation one-way valve, the inlet tee, and the fuel cell stack cooling liquid inlet sensor. By adding an internal circulating heating system, the system of the invention solves the heat radiation problem of the fuel cell stack, and simultaneously can rapidly raise the temperature of the fuel cell stack, which can be always maintained in an optimal working temperature range. Thus, the performance of the fuel cell can be maintained in a most stable state, and the service life can be prolonged.

The invention provides a thermal hydraulic experiment device and method for simulating a nuclear reactor neutron reactivity feedback process. The thermal hydraulic experiment device comprises an electric heating experiment section, a shell-tube type cooler, a voltage stabilizer, a pressurizing nitrogen gas tank, a circulating pump, a cooling water pump, a cooling water tank, a cooling water tower, a pipeline, a valve, a measuring instrument, a data acquisition system, a control computer, a high-frequency direct-current power supply and a conductive copper bar. The high-frequency direct-current power supply is used for electrifying the electric heating experiment section. The circulating pump is connected with an inlet of the electric heating experiment section through a pipeline; the circulating pump is provided with a bypass pipeline; an outlet of the electric heating experiment section is connected with a pipe side inlet of the shell-tube type cooler through a pipeline. A control system for simulating nuclear reactor neutron reactivity is additionally arranged on the thermal hydraulic experiment device, and can be used for simulating the reactivity feedback process and a thermal hydraulic response process of nuclear reactors under various instant working conditions; the thermal hydraulic experiment device has the advantage of simulating various types of experiment working conditions, which are not easy to carry out in the nuclear reactor, under a nuclear-radiation-free environment.

A bearing lubrication (oil circulation) system having a check valve configuration for preventing overflow of an oil reservoir or tank. The pressurized oil circulation system may comprise a pump that pressurizes oil from the tank and circulates the oil through a supply conduit to a bearing, and returns the oil to the tank through a return conduit. The system may include a check valve disposed in the supply conduit and a pilot-operated check valve disposed in the return conduit. The pilot may be taken from the supply conduit upstream of the check valve disposed on the supply conduit. When pressure is discharged from the oil circulation, such as with shutdown of a circulation pump, the check valves automatically close and thus prevent oil contained in the supply and return conduits from draining (i.e., by gravity) to the oil tank. Therefore, flooding of the oil tank with excessive oil is prevented. Furthermore, loss of oil from the bearing sump is also prevented.

The invention discloses an instrument for testing the stratum in-situ thermal property of a ground source heat pump and the heat exchange quantity of a buried pipe, comprising a pipeline circulating system, a testing system and a monitoring system, wherein the pipeline circulating system is a circuit which is formed by connecting a flow sensor, a circulating water pump, an electric heater, an expanding tank, an exhausting valve, a three-way valve and a water supplying valve with a U-shaped buried pipe through connectors; and the testing system comprises a flow sensor, a temperature sensor, a pressure sensor and a power sensor, which are respectively connected with the monitoring system. In the invention, the testing instrument has compact structure and is convenient for carrying; two testing modes of testing the stratum in-situ thermal property and the heat exchange quantity can be economically and conveniently realized at the same time by utilizing one machine; two circulating pumps are alternately used to prolong the service life of the circulating pumps; the test and the adjustment are more convenient; and the testing data is accurate.

The invention discloses a cleaning machine and a cleaning technique of an automatic vertical quartz tube, pertaining to the technical field of cleaning. The machine is formed by integrating a horizontal part cleaning cabinet and a vertical quartz cleaning cabinet into a whole. Each cabinet is respectively and internally provided with a water spraying device, an acid spraying device and a gas spraying device, a liquid storage tank and a heating tank are arrange at the lower part of the cabinet, and a acid liquid recovery tank and a circulation pump are fixed between both tanks. The invention has continuous cleaning and fine cleaning procedures, and a workpiece can be acid washed, rinsed, dewatered and blow-dried in a cabinet or two cabinets, or be roughly washed and fine washed to enhance the cleanness of workpiece to ensure good quality; acid liquid and water can be circulated and recovered, thus saving the cost.

A biomass generator useful for continuously growing and withdrawing bacteria to be used in a desired beneficial application, the generator having a bacteria growth chamber; water and nutrient inlet ports; upper and lower outlet ports; a recirculating pump withdrawing and reintroducing fluid to establish a vortex in the growth chamber while controlling foaming and pump cavitation; a low pressure air inlet line discharging air inside the growth chamber above the vortex; a fluid discharge line receiving bacteria-containing fluid from the upper outlet port of the growth chamber; a flush line discharging wash water into the fluid discharge line; and an electrical controller cooperating with solenoid-operated valves and a feeder mechanism to periodically introduce water and nutrients into the chamber, thereby simultaneously causing bacteria-containing fluid to be discharged from the growth chamber through the upper outlet port. A method for growing bacteria using the subject apparatus is also disclosed.

The present invention discloses an ultrasound, magnetic field, pulse electrocoagulation and membrane composite waste water treatment method, and an apparatus thereof. The technological process of the method comprises that: waste water is conveyed to an electrocoagulation reactor by a pump in an up-flow manner, wherein an ultrasonic generator, electrode plates and a permanent magnet are arranged inside the electrocoagulation reactor, the electrocoagulation voltage is 5-30 V, the current is 5-40 A, the ultrasonic frequency is 20-100 KHz, the ultrasonic power is 100-400 W, and the magnetic field strength is 0.1-0.3 T; the water sample flows through the positions between the electrode plates, and performs circulating flowing by an outer circulation pump; the waste water is treated for 5-12 minutes by the synergism of the ultrasound, the magnetic field, and the pulse electrocoagulation, and then is conveyed in a sedimentation tank by a pump; the supernatant is conveyed to a membrane assembly to carry out filtration to further separate the mud and the water by a pump, wherein the mud is subjected to concentration treatment and recovery, and the water is subjected to standard discharge. The method of the present invention has the following advantages that: the method is applicable for treatments of a lot of the waste water, and the effluent quality is good and stable.

The invention aims to provide a district air-conditioner distributed secondary pump system, which comprises refrigeration main engines 1, chilled water primary pumps 2, a water segregator 3, a water collector 4, and a profit and loss tube 5. According to the invention, in the two forms of an indirect connection 1 and an indirect connection 2, a chilled water secondary pumps 6, plate heat exchangers 7, user chilled water circulating pumps 8, and user tail end air processing devices 9 are mainly arranged on a user side; in the direct connection form, the chilled water secondary pumps 6, the user tail end air processing devices 9, and a bypass pipe 10 of a secondary pump suction inlet with a control valve are mainly arranged in the user side. The invention also provides a connecting form of distributively arranging the secondary pumps to a chilled water distribution system of each user building, and a corresponding operation control method. The system can well realize the hydraulic equilibrium of each paralleled loop circuit of a district cooling system transmission and distribution network, improves the operation efficiency of the secondary pumps, and greatly reduces the water pump energy consumption, thereby improving the energy efficiency ratio of the overall system, and increasing the safety of the overall district cooling system.

A system and method for controlling the speed of a recirculation pump in an anode recirculation loop of a fuel cell system based on a predetermined ratio of fresh hydrogen to recirculated anode gas. The system uses a model to determine the volume flow of the recirculated gas through a fuel cell stack to determine the recirculation rate based on a measured temperature of the recirculated gas, a measured pressure drop across a recirculation pump, a pressure drop across the anode inlet and outlet of the stack, a percentage of hydrogen in the recirculated gas, and the density of the recirculated gas.