46results about How to "Low flow rate" patented technology

A blending system that accurately produces the desired predetermined fluid composition by continuously monitoring each fluid components mass or volume flow.

A system for treating a substance using a storage vessel and two or more devices disposed in a top of the storage vessel. Each device has: (a) a volute or cyclone head, (b) a throat connected to the volute or cyclone head, (c) a parabolic reflector connected to the throat, (d) a first wave energy source comprising a first electrode within the volute or cyclone head that extends through the outlet into the opening of the throat along the central axis, and a second electrode extending into the parabolic reflector and spaced apart and axially aligned with first electrode, and (e) a second wave energy source disposed inside the throat, embedded within the throat or disposed around the throat. The substance is supplied to the inlet of the volute or cyclone head and is irradiated with one or more wave energies produced by the first and second wave energy sources.

The present disclosure relates to a self-regulating, landfill well control system for automatically controlling a flow of landfill gas (LFG) through a wellhead associated with a landfill well at a landfill. The system has a combination unit operably associated with the wellhead, with a valve actuator, a flow measurement element and a controller. The valve actuator controls a LFG flow control valve, to thus control an LFG flow through the wellhead. The flow measurement element produces differential pressures proportional to a LFG flow rate. The controller controls the valve actuator and, based on data obtained using the flow measurement element, adjusts a setting of the LFG flow control valve to obtain a specific control point setting, and automatically maintains the control point setting thereafter.

A device for treating a patient suffering from obstructive sleep apnea or snoring can include an expiratory valve connected to a manifold. The expiratory valve can include a body portion including a feedback port configured to be connected to an air flow generator. The expiratory valve can include a plunger at least partially disposed in the body portion. The expiratory valve can include a pressurizing chamber positioned between an end of the plunger and an end of the expiratory valve. The pressurizing chamber can be configured to receive air from the air flow generator through the feedback port.

A method for treating a substance using an apparatus having: (a) a volute or cyclone head, (b) a throat connected to the volute or cyclone head, (c) a parabolic reflector connected to the throat, (d) a first wave energy source comprising a first electrode within the volute or cyclone head that extends through the outlet into the first opening of the throat along the central axis of the throat, and a second electrode extending into the parabolic reflector proximate to the focus wherein the second electrode is spaced apart and axially aligned with first electrode, and (e) a second wave energy source disposed inside the throat, embedded within the throat or disposed around the throat. The substance is supplied to the inlet of the volute or cyclone head and is irradiated with one or more wave energies produced by the first and second wave energy sources.

A flowmeter for detecting fluid flow rates in a pipe includes a tube having a channel disposed in the pipe through which fluid in the pipe flows. The flowmeter includes an upstream transducer in contact with the pipe and positioned so plane waves generated by the upstream transducer propagates through the channel. The flowmeter includes a downstream transducer in contact with the pipe and positioned so plane waves generated by the downstream transducer propagate through the channel and are received by the upstream transducer which produces an upstream transducer signal. The downstream transducer receives the plane waves from the upstream transducer and provides a downstream transducer signal. The flowmeter includes a controller in communication with the upstream and downstream transducers which calculate fluid flow rate from the upstream transducer signal and the downstream transducer signal. A method for detecting fluid flow rates in a pipe.

The present invention relates to an installation for the in-line lubrication of rolling cylinders (1), preferably for hot rolling of a metal strip, which is preferably steel, by spraying or atomising a lubricant over a target comprising said cylinders and / or said strip, preferably in the vicinity of the roll gap, by means of a bar (2) of controllable air sprays (3), arranged in parallel to said cylinders (1) and supplied with compressed air or inert gas (4), wherein each spray (3) comprises an inlet for the compressed air or inert gas (4) and an inlet for uncompressed pure oil (5) in an adapter (6) followed by a mixing chamber (6′) as well as an outlet nozzle (7) for the atomised mixture.

A method and apparatus for separating air in which an oxygen-rich liquid stream is pumped and then heated within a heat exchanger to produce an oxygen product through indirect heat exchange with first and second boosted pressure air streams. The first boosted pressure air stream is cold compressed at an intermediate temperature of the heat exchanger, reintroduced into the heat exchanger at a warmer temperature and then fully cooled and liquefied. The second boosted pressure air stream, after having been partially cooled, is expanded to produce an exhaust stream that is in turn introduced into a lower pressure column producing the oxygen-rich liquid. The second boosted pressure air stream is partially cooled to a temperature no greater than the intermediate temperature at which the cold compression occurs so that both the first and second boosted pressure air streams are able to take part in the heating of the oxygen-rich stream.

A misfuelling prevention device for a filler neck of a fuel tank includes a tubular element with an inflow side and an outflow side and a closure element, which, when in an open state, permits a flow of fuel through the outflow side, and, when in a closed state, prevents a flow of fuel through the outflow side. In a shell surface of the tubular element there is formed at least one opening which permits a flow of fuel from an inner side of the tubular element through to an outer side of the tubular element. The tubular element can be mounted such that at least a part of the shell surface in which the at least one opening is formed is arranged spaced apart from an inner surface of the filler neck such that fuel flowing through the at least one opening can flow via the filler neck into the fuel tank.

The invention discloses a heat dissipating system for a current transformer. The heat dissipating system comprises a main water inlet pipe connected with a cooling water source, large-diameter water inlet pipes connected between the main water inlet pipe and high-power heat dissipating devices, small-diameter water inlet pipes connected between the main water inlet pipe and low-power heat dissipating devices, and water outlet pipes connected with outlets of the high-power heat dissipating devices and outlets of the low-power heat dissipating devices through branch pipelines. Heat is carried by fluid media to be exhausted to be exhausted of current transformer equipment. The number of the high-power heat dissipating devices and the number of the low-power heat dissipating devices are respectively at least one. All the heat dissipating devices are connected with the main water inlet pipe through the large-diameter water inlet pipes or the small-diameter water inlet pipes. The positions of the low-power heat dissipating devices are higher than the positions of the high-power heat dissipating devices. The heat dissipating system can reduce total flow of the cooling media to the maximum degree while meeting the requirements for heat dissipation of all the heat dissipating devices.

The invention relates to a pneumatic conveying system for fly ash of a dust collector. The system comprises a conveying device, an air source device and a pipeline device; the conveying device is connected with the air source device. According to the pneumatic conveying system of the fly ash of the dust collector, a conveyor mounted below an ash bucket is used for conveying the fly of the dust collector into an ash warehouse; the problems of complex configuration, high conveying energy consumption, serious wear of a pipeline and a valve, and large workload of operation and maintenance of the conveying system of the traditional dust collector can be solved, so that the ash conveying system of the dust collector is economic, practical and reasonable; the operation reliability of the system can also be greatly improved.

A vehicle air-conditioning system of a dual air conditioner type includes a front seat air-conditioning unit for air-conditioning a front seat side and a rear seat air-conditioning unit for air-conditioning a rear seat side. The system includes parallel connected evaporators for the front seat air-conditioning unit and the rear seat air-conditioning unit. At a low flow rate of refrigerant, the system prevents a significant increase in the temperature of air blown into the rear seat area relative to the temperature in the front seat area. The system employs a variable capacity compressor that enables its discharge capacity to be controlled by an external control signal, allowing the discharge capacity of the compressor to be controlled in accordance with the higher evaporator temperature of the temperatures at the front seat evaporator and the rear seat evaporator and a target evaporator temperature.

A highly sensitive low loss and low flow fluid flow switch is coupled with an automatic timer and / or optional transmitter to indicate the flow of gas to an appliance and to automatically start a reminder timer to turn the appliance off. After a preset time limit has expired, the timer either sounds an alarm or wirelessly triggers an alarm in a remote location. The receiver portion of the wireless timer may be mounted directly to the appliance (grill handle), so that the timer automatically resets when activity (cover opening or closing) is detected, indicating the appliance is still in use. An alarm can also be configured to sound when the grill is attempted to be ignited with the cover closed, thereby avoiding a potential explosion. A biasing attraction magnet is incorporated in the fluid flow switch to offset either the force of gravity or a return spring in order to extend performance to low pressure and low flow applications. The piston is sealed for use in high pressure / low flow applications, and provided with a vent hole for residual gas bleed-off upon a stoppage of gas flow.

The invention relates to a transverse axial flow threshing and separating device, and belongs to the field of combined harvester matching devices. The problems that an existing threshing and separating device is small in feed amount and low in efficiency are mainly solved. The transverse axial flow threshing and separating device mainly comprises a threshing roller, a 360-degree separating shell, threshing section adjustable concave plates, separating section adjustable concave plates and guide plates; wherein the threshing roller is located in the 360-degree separating shell and concentrically matched in a large-gap mode, and the threshing section adjustable concave plates and the separating section adjustable concave plates are located on the 360-degree separating shell. The threshing roller is composed of a roller body, forward rasp bars, reverse rasp bars, separating plate teeth and a straw discharging plate, the roller body is integrally welded, and the forward rasp bars, the reverse rasp bars, the separating plate teeth and the straw discharging plate are located on the roller body. 360-degree all-directional separation can be achieved, grains can be separated fast and effectively, meanwhile, the breakage rate is reduced, and the grain loss is reduced to the maximum extent.

The invention discloses an intelligent water dispenser control system which comprises a control panel, a temperature sensor, a liquid level switch and an electromagnetic valve. A single chip microcomputer is integrated on the control panel and is a core control chip of the intelligent water dispenser control system. The intelligent water dispenser control system can realize control of various functions, to be specific, control of water outgoing flow, water outgoing temperature, water leakage sensing, maximum water outgoing flow and fault detection, safety and reliability of a water dispenser are improved substantially, and intelligentization and automation of the water dispenser are realized truly.

Disclosed is a total organic carbon (TOC) measurement apparatus capable of facilitating reduction in size of the apparatus and achieving enhanced measurement accuracy. The TOC measurement apparatus includes an organics oxidation unit, a carbon-dioxide separation unit and a conductivity measurement unit, which are integrally formed by laminating a plurality of plates to define therebetween and incorporate therein an oxidizing flow passage, an aqueous-sample flow passage, a gas permeable membrane, a measurement-water flow passage and a conductivity measuring electrode. The TOC measurement apparatus is designed such that carbon oxide in an aqueous sample is transferred from the aqueous-sample flow passage to the measurement-water flow passage through the gas permeable membrane, and a conductivity of measurement water which contains the carbon oxide and flows through a flow passage facing the conductivity measuring electrode is determined and converted to a TOC content.

The invention discloses a coal ash collecting fractionation device which comprises an air flow spraying pipeline, a discharge pipe, a dust guard cover, a material storage chamber, a blind window, a multi-step type pipeline and a suction pipe. Firstly, the air flow enters the coal ash collecting fractionation device through the spraying pipeline to stir coal ash to be in a fluidization state. Then, the fluidified coal ash is sucked into the multi-step type pipeline, the flow speed in the pipeline is reduced progressively, and coal ash particles with large density or particle sizes suspend in a suspension chamber or subside near the pipeline wall inside a setting chamber. The set coal ash is collected in the material chamber through the blind window, and the set coal ash can be drawn out slowly. After the operation is carried out, the particles with different density or particle sizes in the coal ash are collected and separated.

The invention provides hydroturbine guide vanes and a hydroturbine which are capable of achieving high efficiency in a Francis turbine having a low flow rate at the highest efficiency point according to the specifications thereof and, in addition, hardly present a strength problem when regulating the flow rate. The guide vanes includes a plurality of fixed guide vanes having a long chord length and a plurality of movable guide vanes having a short chord length arranged between the fixed guide vanes, and a flow rate regulation including a fully-closed state is performed by rotating the movable guide vanes having the short chord length.

The invention discloses a suspension-type economizer ash conveying system used for conveying flying ash in an economizer hopper to an ash silo or an electric precipitation inlet flue. The economizer ash conveying system comprises a sender group, a discharge valve, an air supply device and an assorted conveying pipeline; the sender group comprises multiple senders which are serially connected, each sender is suspended to be formed under a corresponding economizer hopper, a feed valve is further arranged between each sender and the corresponding economizer hopper, the discharge valve is arranged on the conveying pipeline of an outlet of the sender group, and the air supply device supplies conveying power for the flying ash in the conveying pipeline. The senders suspended under the hoppers are adopted to convey the flying ash of the economizer to the ash solo or the electric precipitation inlet flue, so that the problems that a conventional economizer ash conveying system is huge in energy consumption, serious in abrasion of the pipeline and the valves, prone to blockage, high in needed mounting height and the like are solved; the economizer ash conveying system is enabled to be more economical, practical and reasonable, and reliability of system operation can be greatly improved.

The invention discloses a simultaneous co-injection forming device, belonging to the field of plastic product forming technology. The device is characterized in that a middle sliding block and a cylinder of the device are connected with each other; the middle sliding block can reciprocate with the cylinder; a runner on the middle sliding block can be communicated with an internal layer resin runner on a positioning plate and a central column; the runner on the middle sliding block can be communicated with an external layer resin runner on the positioning plate and a clapboard; the resin which enters the external resin runner passes through a spiral concave trough which is changed from depth to shallowness to flow forwards by uniformly wrapping the central column, and finally flow out from a nozzle outlet by wrapping the internal layer resin, thus realizing the co-injection forming of two resins at the same time. The simultaneous co-injection forming device has the effects and the benefits of improving the shifting control currency of the device, improving the uniformity and the bonding strength of the external layer material and the internal layer material of the product, and solving the technical problem of the product which is produced by one-time forming at a single working position when the injection forming machine injects different external layer material and internal layer material. The core material can be high-strength recyclable material, thus meeting the requirement of energy-saving and exhaust-reduction.

A fuel cell power plant (10) includes an oxidant stream controlled to enter a fuel cell (12) of the plant at a pressure of between about 0.058 pounds per square inch gas (‘psig’) and about 4.4 psig and the oxidant stream passes through the fuel cell (12) at an oxidant stoichiometry of between about 120% and about 180%, and preferably between about 150% and 170%. A macro-pore cathode gas diffusion layer (36) is secured between a cathode catalyst (16) and a cathode flow field (28). A porous coolant plate (44) is secured in fluid communication with and adjacent the cathode flow field (28). The gas diffusion layer (36) and coolant plate (44) facilitate removal of product water to eliminate flooding and to permit operation at low oxidant stoichiometry and high water balance temperature, thereby minimizing need for water capture and heat rejection apparatus.

Additives that could interfere with the sealing of a cover onto a contact lens package are delivered separately from the bulk saline delivered into the lens package, thereby allowing more precise control of the additive delivery, reducing the incidence of additive in the seal area of the lens package, and improving the seal integrity.

The invention relates to a combined truncated cone type gas-liquid redistributor. The combined truncated cone type gas-liquid redistributor comprises a conical wall and a connecting bottom plate. Theconnecting bottom plate is fixedly arranged at the bottom of the conical wall, and is provided with a plurality of strip-shaped folding plates; the strip-shaped folding plates are of inverted-V structures; a plurality of air holes are formed at equal intervals in both sides of each strip-shaped folding plate; a stop plate is fixedly arranged on the lateral side of the strip-shaped folding plate above each air hole, and an angle is formed between each stop plate and the lateral side of the corresponding strip-shaped folding plate; the angles between the stop plates and the lateral sides of thestrip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate. The combined truncated cone type gas-liquid redistributor has the advantages that the strip-shaped folding plates and the stop plates are adopted to achieve a good distribution effect of washing liquid, and accordingly, the area and time of contact between gases and liquid can be increased and prolonged; the included angles between the stop plates and the lateral sides of the strip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate, so that the differences among the flowing speeds of gases from each air hole are small, the gas distribution effect is good, poor gas-liquid distribution in a packing tower is reduced, and the gas-liquid mass transfer efficiency is improved.

The invention discloses a double-row pile supporting structure. The double-row pile supporting structure comprises front row piles and rear row piles, wherein front row crown beams are arranged at thetops of the front row piles, and rear row crown beams are arranged at the tops of the rear row piles; rigid-frame beams are arranged between the front row piles and the rear row piles; the front rowpiles, the rear row piles and the rigid-frame beams together form a plane truss structure; connecting web members vertically arranged at intervals are arranged between adjacent front row pile bodies and back row pile bodies; front row web members vertically arranged at intervals are arranged between adjacent pile bodies of the front row piles; and a spatial triangle truss column structure is formed between every two adjacent front row pile bodies and the corresponding rear row piles. According to the double-row pile supporting structure, the spatial triangle truss column structure supporting system with the pile bodies connected with the web members solves the existing problems of limited action effects of a dual-row pile spatial system and poor bending resistance of single-row piles, effective connection between the front row piles and the rear row piles is achieved, the space integrated structure is formed, lateral rigidity of the double-row piles is enhanced, and the bending resistance of the structure supporting system is improved.

The invention provides a tower-type porous air supply temperature control device for a data machine room, and the device comprises a temperature control chamber which is internally provided with a porous air supply channel located at a central position, and a tower-type rack disposed around the porous air supply channel; a hot air channel which is arranged above the temperature control chamber; aserver which distributed on the tower-type rack in a tower type, wherein a porous air supply channel upper top cover is arranged on the upper top surface of the porous air supply channel, a porous airsupply channel air inlet is formed in the lower bottom surface of the porous air supply channel, and porous air supply channel air outlets are uniformly formed in the surface of the porous air supplychannel. The problem of low space utilization rate is solved by the optimization of the space arrangement of equipment such as the server and a memory, and the air supply volume of the data machine room is reduced while the structure is compact, so the energy consumption of the fan is reduced, and the uniformity of air flow and temperature distribution in the machine room is improved by adoptingthe perforated plate for air supply.

The present invention discloses a double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow, and is characterized in that the double-side vertical slot type fishway comprises a fishway body, a plurality of pier columns and a plurality of vertical slot type separator plates; the pier columns are disposed over sidewalls of the fishway body; the upstream and downstream water level difference is divided into a plurality of stages by the vertical slot type separator plates; a pool chamber is formed between the adjacent vertical slot type separator plates; the vertical slot type separator plates are disposed at the central position of the cross section of the fishway body; bottoms of the vertical slot type separator plates are fixed on a base plate of the fishway body; fish passing vertical slots are formed by the pier columns and the vertical slot type separator plates; and the pool chambers are connected via the vertical slots. According to the double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow, excess energy of the upstream and downstream water head is eliminated through water cushions, streamwise fiction and water flow opposite thrust and diffusion between the vertical slot type separator plates, so that the double-side vertical slot type fishway can be suitable for hydraulic engineering having bidirectional water heads at a river side or a sea side, energy dissipation effects are good under forward water flow and reverse water flow conditions, integrity of original population is maintained, and the influence of hydraulic engineering construction on current river channels and biologic chains is maximumly reduced.

Disclosed is a fluidization clean-type heat-transfer device system with low flow velocity and horizontal tube array, which is characterized in that: the heat-transfer pipe of the heat-transfer device is internally provided with a helical line which has almost the same length as that of the heat-transfer tube; the inlet and outlet pipe lines of the heat-transfer device are connected with a particle cycling groove; a particle cycling tank is divided into two parts of an upper part and a lower part which are connected with a communication valve; the upper part is the space for the sedimentation and separation of the particles and the lower part is the fluidization space for evenly blending of the fluid and the particles. When in normal running, the convective heat transfer in the tubes is intensified by the helical line, thereby increasing the heat transfer coefficient of the inside of the tubes by about 50 percent; when the fouling of the tubes needs cleaning, a fluidization even cleaning can be realized at a relatively low flow velocity of 0.45 m / s in the heat-transfer tubes by a convenient operation of switching two three-way valves. The novel heat-transfer device has high heat-transfer efficiency, simple structure, high reliability, simple operation and can be widely applied to various horizontal-type heat-transfer devices with a tube array structure.

The invention relates to the field of steam recovery and discloses a radiation refrigeration particle and a steam condensation recovering device. The steam condensation recovering device comprises a steam condensation cavity and the radiation refrigeration particle, wherein the radiation refrigeration particle comprises a condensing body made of a radiation refrigeration material and a lyophobic body made of a lyophobic material, and the lyophobic body is connected with the condensing body. When used, the radiation refrigeration particle suspends in a medium under the blowing of the medium andis used for condensing steam in the medium. The radiation refrigeration particle can rapidly release latent heat of condensation to an external environment through radiation heat transferring under the situation that no extra energy is input and no adsorbent is used, and the steam is efficiently condensed.