51results about How to "Large flow range" patented technology

The forming apparatus of the present invention preferably includes an orifice on top of the trough. The uniquely shaped orifice substitutes for the weirs as the controlling entity for glass thickness. The orifice is designed such that as it deforms, it maintains a linear flow characteristic with respect to its length. As the orifice is made larger by the applied stress, the percentage width increase is the same over its length and consequently the percentage flow increase is the same over the length of the orifice. In another embodiment, the present invention provides an adjustment to change the flow characteristics of the trough to compensate for the degradation of the forming trough during an extended production run. A flow control plug can be inserted into the trough, such that flow dynamics can be altered during hot operation by insertion, removal or position adjustment of the flow control plug.

A turbocharger, having an axial compressor wheel and an axial turbine wheel mounted on a first shaft supported by a housing, and a radial compressor wheel and a radial turbine wheel mounted on a second shaft, the second shaft concentrically extending around the first shaft and being supported by the housing. The housing defines a first duct extending axially from the exducer of the axial compressor to the inducer of the radial compressor, and a second duct extending axially from the exducer of the radial turbine to the inducer of the axial turbine. A plurality of controllable compressor guide vanes extend through the first duct, and a plurality of controllable turbine stator vanes extend through the second duct. The housing is provided with variable diffuser vanes at the exducer of the radial compressor, and with variable turbine vanes at the inducer of the radial turbine. The variable turbine vanes and the turbine stator vanes are controlled to accurately control the rotation rate of the radial and axial turbines. The compressor guide vanes are controlled to minimize surge and maximize choke flow rate.

An exhaust aftertreatment system is provided. The exhaust aftertreatment system includes a mixing arrangement for mixing flows of exhaust along a flow path. The mixing arrangement radially and angularly rearranges segments of two different portions of flow to mix the different portions of flow. The mixing arrangement initially converts a generally radially stratified temperature profile into an angularly stratified temperature profile to increase surface area between cool segments of exhaust gas and hot segments of exhaust gas. The aftertreatment system may also include a combustion chamber, a combustor housing and a combustor liner. The mixing arrangement is downstream from the combustion chamber to direct radially outward hot gas passing through the combustor liner and to direct radially outer cool gas passing between the liner and the combustor housing radially inward in an interleaving fashion.

A mass flow sensor is manufactured by a process of carrying out a micro-machining process on an N or lightly doped P-type silicon substrate with orientation <100>. This mass flow sensor comprises a central thin-film heater and a pair of thin-film heat sensing elements, and a thermally isolated membrane for supporting the heater and the sensors out of contact with the substrate base. The mass flow sensor is arranged for integration on a same silicon substrate to form a one-dimensional or two-dimensional array in order to expand the dynamic measurement range. For each sensor, the thermally isolated membrane is formed by a process that includes a step of first depositing dielectric thin-film layers over the substrate and then performing a backside etching process on a bulk silicon with TMAH or KOH or carrying out a dry plasma etch until the bottom dielectric thin-film layer is exposed. Before backside etching the bulk silicon, rectangular openings are formed on the dielectric thin-film layers by applying a plasma etching to separate the area of heater and sensing elements from the rest of the membrane.

A method for expanding the operating domain of a boiling water nuclear reactor that permits safe operation of the reactor at low core flows is described. The operating domain is characterized by a map of the reactor thermal power and core flow. In an exemplary embodiment, the method for expanding the operating domain of a boiling water nuclear reactor permits operation of the reactor between about 120 percent of rated thermal power and about 85 percent of rated core flow to about 100 percent of rated thermal power and about 55 percent of rated core flow. The method includes determining an elevated load line characteristic that improves reactor performance, performing safety evaluations at the elevated load line to determine compliance with safety design parameters, and performing operational evaluations at the elevated load line. The method also includes defining a set of operating conditions for the reactor in an upper operating domain characterized by the elevated load line. Additionally, the method includes performing a detailed analysis of the performance of the core recirculation system and the system control components. further, the method provides for modifying the reactor process controls and computers to permit the reactor to operate in the expanded operating domain within predetermined safety parameters. Also, safety mitigation action setpoints are adjusted to permit reactor operation in the expanded operating domain.

The invention provides a double standard gas flow device parallel structure and a detection method, and relates to the technical field of measurement. A gas source is connected to a to-be-detected flowmeter. The to-be-detected flowmeter is connected to a bell jar and a standard gas flowmeter through a tee joint. Gas accumulation amount of the bell jar, the standard gas flowmeter and the to-be-detected flowmeter through pulse. The gas accumulation amount of the bell jar and the standard gas flowmeter is converted into gas accumulation amount of the to-be-detected flowmeter under pressure and temperature, and the gas accumulation amount of the bell jar and the standard gas flowmeter and the gas accumulation amount of the to-be-detected flowmeter under pressure and temperature are added together to obtain a standard gas volume value. A to-be-detected flowmeter value error is obtained by calculation of the gas accumulation amount of the to-be-detected flowmeter. The double standard gas flow device parallel structure and the detection method solve the technical problems in the prior art that a standard device only uses a ''single type'' standard device value, a flow range cannot be expanded and the pressure loss is large. The double standard gas flow device parallel structure and the detection method have the beneficial effects that different detection methods are implemented on thesame set of device and applied in calculation processes, the flow range is large, the pressure loss is small, and the device calibrates single points of the standard gas flowmeter on line, which eliminates mounting errors.

The invention relates to a liquid flow control valve, which comprises a valve body, a flow channel is arranged in the valve body, a valve seat is arranged in the flow channel, the valve body is fixedly connected with a valve stem, the bottom end of the valve stem is located inside the valve seat, and the bottom end of the valve stem is located in the valve seat. There are a plurality of blades distributed along the circumference. The blades are rotatably connected with the valve stem and the valve seat through the rotating shaft. One end of the blade is attached to the valve stem and the other end is attached to the valve seat. The rotating shaft extends to the outside of the valve seat and is connected with the drive mechanism. The two sides of the blade along the circumferential direction of the blade are wave-shaped surfaces, and the two sides of the blade along the circumferential direction of the blade are provided with a plurality of protrusions and grooves, and the protrusions and grooves of adjacent blades can cooperate with each other. The control valve of the invention has high control sensitivity, wide adjustment range and long service life.

The invention discloses an engine cylinder head water jacket and an engine, comprising a main casing body and a side casing body; The main water chamber and the main casing are provided with a water inlet and a water outlet connected to the main water chamber. The water chamber, the side water chamber is located on the exhaust side of the main water chamber, and is connected to the water outlet through the main water chamber. The exhaust side of the main casing is sequentially provided with the first water port, The second water port and the third water port are respectively provided with two side water ports at the two ends of the side body, the first water port is connected to one side water port, the third water port is connected to the other side water port, and the second water port extends into the side water chamber through a conduit. The engine cylinder head water jacket and the engine of the invention aim to solve the problem in the prior art that the cylinder head water jacket has poor cooling performance and cannot meet the heat dissipation requirements of the engine.

A biomass-mixed, pulverized coal-fired burner is provided, capable of burning biomass fuel as auxiliary fuel in large quantities and burning only pulverized coal when the biomass fuel is not sufficiently available. The biomass-mixed, pulverized coal-fired burner includes a biomass fuel jet nozzle that extends axially along the biomass-mixed, pulverized coal-fired burner, a fuel jet nozzle that is open midway in the biomass fuel jet nozzle, a secondary air nozzle that surrounds the fuel jet nozzle, and a tertiary air nozzle that surrounds the secondary air nozzle. A pulverized coal component in a fuel stream as a mixture of the pulverized coal fuel stream and the biomass fuel stream is distributed with a higher concentration on an outer circumferential wall side and a biomass fuel component in the fuel stream is distributed inside of the pulverized coal fuel component.

The invention relates to a sand supply instrument for a slope-variable water flume. The sand supply instrument comprises lifting platforms, a first water supply tank, a sand supply groove, a sand supply device and a second water supply tank, wherein the lifting platforms comprise a first lifting platform and a second lifting platform; the first lifting platform is higher than the second lifting platform; the height difference between the first lifting platform and the second lifting platform is the vertical height of the sand supply groove; the first water supply tank is horizontally placed on the first lifting platform, and the second water supply tank is horizontally placed on the second lifting platform; the upper end of the sand supply groove is hermetically connected with the water outlet side surface of the first water supply tank; the lower end of the sand supply groove is connected with the water inlet end of the second water supply tank; a cambered transitional belt is arranged at the other end of the second water supply tank; the transitional belt is joined with the slope-variable water flume; the sand supply device is arranged over the sand supply groove and provides test silt required by the sand supply groove for the sand supply groove. The sand supply instrument can be connected with the slope-variable water flume by adjusting the heights of the lifting platforms, sand is added to the sand supply groove through the sand supply device, water flow containing sand is generated in the sand supply groove, and the water flow falls on the slope-variable water flume through the water supply tank. Thus, the sand content of the water flow can be well controlled, and the purpose of controlling the sand content of the water flow is achieved.

A two-phase bubbly flow mixing device and method at the bottom inlet of a vertical rod bundle channel. The auxiliary water inlet area composed of the auxiliary water inlet chamber, the filter element structure composed of the filter element circular tube section, the filter element transition section and the filter element porous section, and the device consisting of the upper and lower pipe seats of the device, the filter element casing, the filter element fixing plate and the filter element casing fixing plate Support and fixed structure; after the gas enters from the round pipe section of the filter element, it flows out from the porous section of the filter element through the transition section of the filter element and mixes with the auxiliary water inlet to flow upward. The gas-liquid two-phase formed by mixing is then mixed with the main water inlet. Obtain bubbly two-phase flow with different gas content, and finally enter the rod bundle channel area; the present invention can obtain a larger range of bubbly two-phase flow, satisfying the two-phase bubbly flow for different vapor content in the rod bundle channel Experimental requirements; in addition, the present invention also has the advantages of simple operation, high stability, and easy processing and installation of the device.