109results about How to "Wide flow range" patented technology

A method and apparatus for determining a fluid level and/or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and/or oil from a well, and include a vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives, from the estimated values of the pump operating parameters, an estimated value of fluid level and other pumping system parameters. Controllers responsive to the estimated values of the pumping system parameters control the pump to maintain fluid level at the pump input, near an optimum level, or within a safe operating range and/or output flow from the pump.

An air distribution apparatus that serves as a single sensing device for both lighting, LiFi, and HVAC functions that are operable on a single platform by building automation systems. The building automation system may be controllable by a single software system or network accessible locally on site or remotely off site. The air distribution apparatus can operate in a single zone or coupled with multiple like apparatuses for multi-zone operation. It is a high turndown, self-balancing system which allows for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof. The air distribution apparatus includes multi-stage airflow control systems that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.

Systems and methods for measuring and controlling fluid flow include an orifice plate defining a variable opening. The orifice plate includes an outer assembly comprising a central opening and an inner assembly extending through the central opening. The flow device regulates high and very low volumes of fluid with precision, inexpensively, with superior acoustics, reduced energy, and simpler design. The high turndown device permits use at lower velocities, thereby reducing noise generation and eliminating need for sound-attenuating liners. The high rangeability device combines several part numbers into fewer parts, thereby streamlining product portfolios. In some cases, cost benefits associated with the flow device allow equipment to be scaled back 100:1 rather than 10:1, providing energy savings, fewer product variations, simple and more robust applications. The device meets new and old building fresh air, comfort and energy codes. The flow device can be engineered, selected, and sized without sophisticated software programs.

Systems and methods for measuring and controlling fluid flow comprises an orifice plate defining a variable opening, wherein the orifice plate includes an outer assembly comprising a central opening and an inner assembly extending through the central opening. Another embodiment comprises a plurality of blades disposed parallel to each other, wherein the blades are pivotable along its longitudinal axis and include at least one low-flow blade or partial blade and a plurality of high-flow blades The flow device regulates high and very low volumes of fluid with precision, inexpensively, with superior acoustics, reduced energy, a simpler design, and prevents building infiltration. The high turndown device permits use at lower velocities, thereby reducing noise generation and eliminating need for sound-attenuating liners. The high rangeability device combines several part numbers into fewer parts, thereby streamlining product portfolios. Cost benefits associated with the flow device allow equipment to be scaled back 100:1 rather than legacy 4:1, providing energy savings, fewer product variations, simple and more robust applications. The device meets new and old building fresh air, comfort and energy codes. The flow device can be engineered, selected, and sized without sophisticated software programs.

A pilot burner (150, 350) for a gas turbine engine delivers an inner non-swirling fuel-oxidant mixture surrounded by an outer swirling fuel-oxidant mixture, thereby providing enhanced mixing with no recirculation zone. At least one fluid-restricting inlet port (166, 366) provides an oxidant to an inner mixing passage (160, 360). The inner mixing passage (160, 360) includes a plurality of fuel outlets (168). An outer annular mixing passage (180) receives oxidant from an upstream port (181) surrounding the inner mixing passage and includes at least one swirler element (186, 386) and fuel outlets (188).

An air distribution apparatus that serves as a single sensing device for both lighting, LiFi, and HVAC functions that are operable on a single platform by building automation systems. The building automation system may be controllable by a single software system or network accessible locally on site or remotely off site. The air distribution apparatus can operate in a single zone or coupled with multiple like apparatuses for multi-zone operation. It is a high turndown, self-balancing system which allows for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof.

A pressure vessel provided with a first port acting as a high pressure inlet of a first stream and a second port acting as a high pressure outlet. A rotatable valve element is located in the centre of the machine and includes a centre plate, which is utilized to separate high pressure streams. At each end of the valve element are valves. The valves ensure that as the valve element rotates the exchange ducts are either both isolated or that one is exposed to high pressure while the other is exposed to low pressure. In operation, a fluid stream is introduced to the machine at high pressure through port and flows around the outside of the exchange duct towards the centre of the machine. The stream then flows downwardly to the valve element, where it then passes through the open ports of the valve element and into flow distributor. The stream then passes into and upwardly in the exchange duct, causing upward displacement of the duct piston, resulting in the pressurization and flow of the second fluid above the duct piston. The second fluid then flows into the upper flow distributor, into the valve element, and then downwardly and finally between the exchange duct and out through the high pressure port. At the same time a fluid stream is introduced to the machine at low pressure through port. This flows into the valve element and then into the flow distributor. From the flow distributor it flows and downwardly into the pressure exchange duct, causing downward displacement of duct piston and resulting in flow of the first fluid below the duct piston, which then flows into the lower flow distributor, into the valve element, and then out of the lower sealing plate at port. A planar radial sealing surface promotes sealing connection between the rotatable valve element and various pressure exchange ducts within the pressure vessel.

The invention discloses a fuel gas electronic injection valve used for a gas fuel engine. The fuel gas electronic injection valve comprises a shell, an electromagnetic valve component and a valve element component. The valve element component comprises a valve element, a valve block, a valve seat and an armature, wherein the valve block is installed in the valve element and fixedly connected with the lower end of the armature; when the electromagnetic valve component is powered on, under the effect of electromagnetic force, the armature pulls the valve block to upwards move so as to form a fuel gas channel between the lower surface of the valve block and the upper surface of the valve seat; and when the electromagnetic valve component is powered off, the lower surface of the valve block and the upper surface of the valve seat are attached to form a sealing face, and the fuel gas channel is blocked. The fuel gas electronic injection valve can be suitable for high-speed gas machines and dual-fuel engines, and the requirements of high response speed, accurate fuel gas metering, wide single cylinder power covering scope and the like are met.

The invention provides a cold plate performance test device which is characterized by comprising a thermometer (4), a pressure meter (5), a flowmeter (6), a filter (7), a heat radiator (8), a flow valve (10), a water pump (11), a water tank (13) and a cold plate (1) which are sequentially connected together in series through a pipeline, wherein a fan (9) is fixed together with the heat radiator (8) through a bracket; an electric heater (12) is arranged on the side wall of the water tank (13) in a threaded connection manner; a heating resistance module (2) and a wall temperature sensor (3) are fixed on the surface of the cold plate (1) through bolts; and a control unit (14) is connected with the heating resistance module (2), the wall temperature sensor (3), the thermometer (4), the pressure meter (5), the flowmeter (6), the fan (9), the water pump (11) and the electric heater (12) through a conductive wire, so that a control part of the device is formed. The cold plate performance test device disclosed by the invention has the advantages of wide measurement range, small measurement error and high measurement precision.

The invention discloses a control device for the underground layered flow rate of a water injection well. The lower end of a tubular controller main body is provided with an executing mechanism, a flow passing passage and a cable are penetrated inside the tubular controller main body, the tubular controller main body is connected with a flow rate meter and a test control unit, the executing mechanism is connected with an electric adjustable water nozzle, a liquid inlet connected with the electric adjustable water nozzle is arranged in the flow passing passage, a liquid outlet connected with the electric adjustable water nozzle is arranged on the tubular controller main body, the flow rate meter and the executing mechanism are respectively and electrically connected with the test control unit, the flow rate meter obtains the layered water quantity in real time and transmits the results to the test control unit, when the layered water quantity is not in the preset water quantity range, the test control unit sends control signals to the executing mechanism, and the executing mechanism receives the control signals and regulates the water inlet quantity or the water outlet quantity of the electric adjustable water nozzle. The real-time monitoring on the underground parameters of the water injection well is realized, in addition, the injection quantity is regulated through the executing mechanism, the control device realizes the checking and sealing on a packer through the installation of a checking and sealing pressure meter, and the remote operation and control function is realized.

The invention discloses an asymmetric split turbine of a turbocharger, comprising an engine. The engine is provided with an exhaust tube of the engine, a turbine casing and a turbine rotor, wherein, the turbine casing is provided with a casing high pressure flow channel and a casing low pressure flow channel, the exhaust tube of the engine is provided with a high pressure exhaust manifold and a low pressure exhaust manifold, the high pressure exhaust manifold is connected with the casing high pressure flow channel, the low pressure exhaust manifold is connected with the casing low pressure flow channel, and the A/R value of the casing high pressure flow channel is less than that of the casing low pressure flow channel. By adopting the asymmetric split structure, the two flow channels of the turbine casing have different A/R values and are respectively connected with different exhaust pipelines of the engine, thus effectively lowering the exhaust back pressure of part of engine cylinders and reducing the influence of EGR operation process on the pressurizing unit. The asymmetric split turbine has good succession, simple structure, easy upgrade and switch of products, low cost and easy and fast realization of engineering.

The invention provides a flow measuring device and method. The device comprises a discharge pipe used for introducing a water flow under test; a header tank used for acquiring the water flow introduced by the discharge pipe; a measurement part used for measuring the weight of the header tank and then transmitting the weight; and a data processing device used for receiving the weight and calculating the rate of the water flow based on the weight. The device and the method have the advantages of high precision of measurement data, wide flow application range, high data time resolution, small data fluctuation and the like. Therefore, the device and the method are especially suitable for the small-flow continuous runoff measurement.

In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.

The invention discloses a laminar flow element. The element is composed of a hollow cylinder body and solid round bars, the solid round bars are closely arrayed inside the hollow cylinder body, the solid round bars are fixed to the hollow cylinder body through interference fit, each solid round bar is fixed to the adjacent solid round bars through interference fit, laminar flow channels are constituted by gaps between the solid round bars and the hollow cylinder body and among the solid round bars, and fluid flows through the laminar flow channels, so that laminar flow is formed. The laminar flow element has the advantages of being low in fabrication cost, high in stability of the formed laminar flow and wide in applicable flow scope.

The invention provides a turbocharger structure which is applied in the technical field of a turbocharger and can change an air flow direction entering into a press shell. The variable air inlet structure turbocharger comprises a turbine shell (1), a middle shell (2) and the press shell (3); a press shell inlet (41) of the turbocharger structure is provided with an air inlet adjusting device (5) which is capable of changing the air flow direction entering into the press shell (3); the air inlet adjusting device (5) comprises a cavity (34) with a hollow structure; more than one sheet-shaped guide blade (44) is installed in the cavity (34); the air inlet adjusting device (5) further comprises a driving mechanism (49) for driving the guide blade (44) to torque. The technical scheme of the invention can change the air flow direction in the inlet of the gas compressor, efficiently reduce the flow rate while surging, improve the flow rate while blocking, widen the flow rate range of the turbocharger and improve the efficiency and pressure ratio of the turbocharger.

A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a pump and flow circuit, and a control system may be used to deliver a range of fluid volumes. The flow circuit utilizes a networked system of fluid paths and valves to route fluid through the dosing pump system in response to a pressure differential between fluid inlet and fluid outlet ports, while the controller monitors and controls the operation of the system.

In a method of determining a flow rate in an intravenous fluid delivery system according to one embodiment of the present invention, the fluid delivery channel forms a segment of the intravenous infusion system. An input thermal signal is emitted into a source location of a fluid delivery channel at an emitting instant. A first output thermal signal is received from a first sensor location of the fluid delivery channel at a first receiving instant. The first sensor location is positioned with a first interval downstream from the source location. The input thermal signal, the first output thermal signal, the emitting instant, the first receiving instant and the first interval define a first measured thermal profile. The first measured thermal profile is matched with a reference thermal profile which corresponds to a reference value, and the flow rate can be determined.

The invention discloses a flowmeter for laminar flow. The flowmeter comprises end covers, a main body, adjustment cylinder bodies, an upstream pressure guide tube, gaskets, gauze elements, a differential pressure transducer, a laminar flow element and a downstream pressure guide tube, the laminar flow element is composed of a hollow cylinder body and a solid round bar, and the two sides of the laminar flow element are each provided with the corresponding gauze element, the corresponding gasket and the corresponding adjustment cylinder body in sequence. Compared with an existing flowmeter for laminar flow, the flowmeter is lower in production cost, higher in measurement precision and wider in applicable flow range.

The invention relates to a right-angle high-pressure electromagnetic flow meter which comprises a flow meter shell, a sealing end cap connected with the flow meter shell, a connection base and an electromagnetic flow converter. A metering cavity is arranged in the flow meter shell, and the connection base is respectively connected with the sealing end cap and the electromagnetic flow converter. The flow meter is characterized in that an electromagnetic flow sensor is further included and is located in the metering cavity, the electromagnetic flow sensor comprises a sensor shell, a measurement electrode, an excitation coil and a magnetic yoke, the measurement electrode is embedded into the outer wall of the sensor shell, the excitation coil and the magnetic yoke are located on the inner wall of the sensor shell, and the excitation coil and the magnetic yoke are connected with the electromagnetic flow converter through cables. The right-angle high-pressure electromagnetic flow meter has the advantages that the Faraday electromagnetic induction principle is adopted, the induction signal amplitude and the fluid flow speed are in direct proportion, the structure is simple, movable components do not exist, the service life is long, maintenance load is little, linear flow measurement is achieved, non-linear revision is not needed, measurement precision is high and the flow range is wide.