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24 results about "Vapor quality" patented technology
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In thermodynamics, vapour quality is the mass fraction in a saturated mixture that is vapour; in other words, saturated vapour has a "quality" of 100%, and saturated liquid has a "quality" of 0%. Vapour quality is an intensive property which can be used in conjunction with other independent intensive properties to specify the thermodynamic state of the working fluid of a thermodynamic system. It has no meaning for substances which are not saturated mixtures (for example, compressed liquids or superheated fluids).
Methods and systems for starting up and operating one or more vapor-recompression units
A method for starting up vapor-recompression units comprises: providing a vapor recompression sub-system comprising one or more vapor-recompression units, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction in vapor communication with the vapor recompression sub-system; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system while maintaining the restricted vapor mass flow rate for a start-up time period; and then, following the start-up time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a full vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the full vapor mass flow rate.
Owner:ENERGY INTEGRATION INC
Multi-stage vapor-venting manifold-microchannel heat sink, and systems and methods for use thereof
A manifold-microchannel (MMC) heat sink can comprise a plurality of microchannels and a manifold. The microchannels can be segregated into successive heat transfer stages. The manifold can include at least one connecting channel and at least one vapor permeable membrane portion. Each connecting channel can fluidically couple one of the heat transfer stages to a successive heat transfer stage. Each vapor permeable membrane portion can allow coolant in a vapor phase to pass therethrough while retaining coolant in a liquid phase within the corresponding connecting channel. A vapor quality of the coolant exiting from one of the heat transfer stages into a connecting channel can be greater than a vapor quality of the coolant entering the successive heat transfer stage from the same connecting channel.
Owner:UNIV OF MARYLAND
Efficient steam quality detection device
The utility model particularly relates to a high-efficiency steam quality detection device which comprises a dryness and superheat degree detection device assembly, an air-cooled condensing device assembly and a non-condensable gas detection device assembly, the dryness and superheat degree detection device assembly comprises a steam guide four-way pipeline, a first pressure transmitter, a drain valve, a measurement four-way pipeline, a second pressure transmitter and a temperature sensor, and the air cooling condensation device assembly comprises an efficient condenser and an efficient cooling fan. The non-condensable gas detection device assembly comprises an air burette, a first electromagnetic valve, a first pressure differential sensor, a second pressure differential sensor, a condensate water burette and a second electromagnetic valve. The steam quality detection device has the advantages of high precision, high efficiency, high automation degree, capability of completely meeting the requirements of EN285 regulations on steam quality detection and the like.
Owner:NANJING HUIXUAN INSTRUMENT TECHNOLOGY CO LTD
Flow calibration device of gas flowmeter
The utility model relates to a flow calibration device of a gas flowmeter. The flow calibration device comprises a first water pump; the steam generator is connected with the first water pump and used for converting liquid output by the first water pump into steam; the water-steam separator is connected with the steam generator; the steam flow meter is connected with the water-steam separator, and the steam separated by the water-steam separator flows through the steam flow meter; the heat exchange module is connected with the steam flow meter and is used for carrying out heat exchange on the steam flowing through the steam flow meter; the measuring container is used for accommodating the liquid flowing out of the heat exchange module and weighing the liquid; the water tank is provided with an inlet and an outlet, the inlet is connected with the measuring container, the outlet is connected with the first water pump, and the water-steam separator can perform water-steam separation on steam output by the steam generator and remove liquid water carried in the steam, so that the purity of the steam is improved, and the quality of the steam entering the steam flowmeter is higher; and the flow calibration accuracy of the steam flowmeter is improved.
Owner:SHANGHAI INST OF MEASUREMENT & TESTING TECH
Methods and systems for starting up and operating one or more vapor-recompression units
A method for starting up vapor-recompression units or ramping up from low mass flow rates comprises: providing a vapor recompression sub-system, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system or ramping up from low mass flow rates while maintaining the restricted vapor mass flow rate for a time period; and then, following the time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a normal vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the normal vapor mass flow rate.
Owner:ENERGY INTEGRATION INC
Steam heat accumulation self-superheating system
The utility model relates to the technical field of steam heat storage, especially to a steam heat storage self-superheating system, including steam heat accumulator, still including inlet steam pipeline, superheater import pipeline, superheater and superheater export pipeline, it is sent to steam heat accumulator in the saturated steam through inlet steam pipeline, makes steam heat accumulator store saturated steam, when required, steam heat accumulator is made saturated steam to be discharged into the superheater through superheater import pipeline, saturated steam is heated through the superheater, forms superheated steam, and then superheated steam is discharged through superheater export pipeline, which makes the steam continuously maintain saturated state during long-distance transportation, improves the steam quality of receiving point, and reduces the generation of condensed water.
Owner:青岛中天蓝环保科技有限公司
Hanging-preventing garment steamer
Owner:GUANGDONG GORDEN NETWORK TECHNOLOGY CO LTD
Sampling device suitable for water vapor quality detection of power station boiler
ActiveCN224095452UStable flow rateGuaranteed representationWithdrawing sample devicesPreparing sample for investigationPower stationVapor quality
The utility model relates to a sampling device suitable for water vapor quality detection of a power station boiler, which comprises a box body provided with moving wheels at the bottom, a sealed flow cell is arranged in the box body, a cooling assembly is arranged in the sealed flow cell, the sealed flow cell is connected with a sampling pipeline and a feeding pipeline, and the feeding pipeline is connected with the sampling pipeline. And the pipe head of the feeding pipeline is connected with a water pipe universal joint. The device has the function of collecting a water sample to be tested, can ensure the sealing performance of an instrument in the whole test process, can effectively connect various sampling pipe joints of different models on a boiler with a feeding pipeline of the device, and ensures that the temperature and the flow of the water sample to be tested meet the test requirements of the instrument in the test process of the instrument; therefore, the accuracy and effectiveness of field test results are ensured. In addition, the device meets the requirement for portable sampling in field inspection of the water vapor quality of the power station boiler, and the standardization and accuracy of the test are improved.
Owner:FUJIAN SPECIAL EQUIP TESTING RES INST
A beverage steam boiler device
ActiveCN224268977UGuaranteed purityquality improvementBeverage vesselsActivated carbonThermodynamics
This utility model relates to the field of steam boilers, and in particular to a beverage steam boiler device. The beverage steam boiler device includes a shell, a mixing module, a steam generator, and a filtering module. The mixing module is disposed inside the shell, and the steam output end of the steam generator is connected to the filtering module for filtering steam. The mixing module includes a mixing chamber, a raw liquid chamber, and a purified water chamber. The raw liquid chamber is connected to the mixing chamber and is installed on one side of the mixing chamber. The purified water chamber is connected to the mixing chamber and is installed on the other side of the mixing chamber. The raw liquid chamber is equipped with an inclined blade, which is rotatably installed on the bottom surface of the raw liquid chamber. The filtering module is equipped with a filtering output end, which is connected to the mixing chamber for outputting filtered steam. The use of a composite filter and activated carbon can filter and adsorb impurities and odors in the steam, purify harmful gases, ensure the purity of the steam, improve the steam quality, and provide high-quality steam support for beverage production.
Owner:GUANGDONG XIANJIN HEALTH BEVERAGE FOOD CO LTD
Intelligent two-phase pumped cooling
ActiveUS12457713B2Digital data processing detailsCooling/ventilation/heating modificationsVapor qualityProcess engineering
Systems and methods include a first valve that controls a flow rate of a coolant. A processor is configured to set the flow rate of the coolant to a rate that maintains a vapor quality, measured at an outlet of the coolant, within a predetermined quality range.
Owner:NVIDIA CORP
Steam heat storage self-overheating system
The invention relates to the technical field of steam heat storage, in particular to a steam heat storage self-overheating system which comprises a steam heat storage device. The system further comprises a steam inlet pipeline, a superheater inlet pipeline, a superheater and a superheater outlet pipeline. Saturated steam is conveyed into the steam heat accumulator through the steam inlet pipeline, the steam heat accumulator stores the saturated steam, when needed, the steam heat accumulator discharges the saturated steam into the superheater through the superheater inlet pipeline, the saturated steam is heated through the superheater, and superheated steam is formed. And superheated steam is discharged through an outlet pipeline of the superheater, so that the steam can be continuously kept in a saturated state in a long-distance conveying process, the steam quality of a receiving point is improved, and the generation of condensed water is reduced.
Owner:青岛中天蓝环保科技有限公司
Apparatus and method for providing a mass flow of a vapour of a liquid or solid starting material for a CVD reactor
The invention relates to an apparatus for providing a mass flow of a vapour of a liquid or solid starting material for feeding into a process chamber (7) of a CVD reactor (1), having a container (2) for receiving and evaporating the starting material (2'), into which a feed line (3) leads and out of which a discharge line (4) leads, wherein the feed line (3) has a source mass flow controller (5) for controlling a carrier gas flow (F3) that is able to be fed into the container (2), wherein the discharge line (4) is fluidically connected to the CVD reactor (1) in such a way that the vapour transported through the discharge line (4) by the carrier gas is able to be fed into a process chamber (7) of the CVD reactor (1), wherein the total pressure in the container (2) can be kept at a predetermined value by means of a pressure regulator (9) fluidically connected to the discharge line (4), wherein a first gas flow (F1) consisting of the carrier gas and the vapour flows through the pressure regulator (9). In order for it to be possible to change the mass flow of the vapour flowing in the CVD reactor (1) in a temporally precise manner, the invention proposes that the first gas flow (F1) flowing through the pressure regulator (9) does not flow into the process chamber (7) and a second gas flow (F2), which is controlled by a feed mass flow controller (10) arranged in the discharge line (4) and is made up of the carrier gas and the vapour, flows into the process chamber (7).
Owner:AIXTRON AG
Steam generator and control device and method
The invention relates to a steam generator and a control device and method, and relates to the field of kitchen ware. Comprising a water inlet, a steam outlet, a vaporizing chamber and an overheating chamber, the water inlet is communicated with the vaporizing chamber, the water inlet is downwards connected to the first end of the vaporizing chamber at the bottom, the second end of the vaporizing chamber is upwards connected with the overheating chamber, the overheating chamber is used for condensing water steam with low temperature, and the steam outlet is formed in the tail end of the overheating chamber. A first heating mechanism and a first sensor are arranged on one side of the vaporization cavity, and a second heating mechanism and a second sensor are arranged on one side of the overheating cavity. A stepped path for steam flowing is formed through the arrangement of the overheating cavity, water drops which are not completely vaporized in the vaporization process and condensate water in steam conveying can be effectively intercepted and prevented from being directly mixed into output steam or flowing back to the vaporization cavity to interfere initial vaporization, invalid loss of a water body is reduced, and the utilization rate is increased; the water content of output steam is more stable, the steam quality is improved, and the requirements of different cooking scenes are met.
Owner:GUANGDONG HUIJUN TECH GRP LTD
Wet steam flow testing device and method based on pressure drop characteristic of steam injection valve
The invention provides a wet steam flow testing device and method based on the pressure drop characteristic of a steam injection valve, the device comprises at least two differential pressure sensors, the front ends of the differential pressure sensors are located at the same position of an inlet of the steam injection valve, and the tail ends of the differential pressure sensors are located at pressure measuring points of an outlet of the steam injection valve. The pressure measuring points are arranged at intervals along the flow direction of an outlet medium of the steam injection valve; the mass flow velocity coefficient alpha m of the steam injection valve is obtained based on fitting; measuring the pressure difference P at two ends of the valve body, and calculating the steam mass flow rate according to a formula to obtain the wet steam flow; gm is steam mass flow rate; alpha m is a mass flow rate coefficient; rho w is vapor liquid phase density; rho s is steam gas phase density; p is pressure difference between two ends of the valve body; x is steam dryness; according to the flow measurement method, the flow measurement process is simplified based on the fitted mass flow velocity coefficient alpha m of the steam injection valve; the method adapts to wet steam two-phase flow characteristics, solves the problem that a traditional method is insufficient in measurement precision in a wet steam scene, and achieves accurate measurement and calculation of the wet steam flow of the steam injection valve.
Owner:XI AN JIAOTONG UNIV
Phase-change-based cavitation simulation calculation method and device for pressure pipeline
PendingCN120911360ADesign optimisation/simulationComplex mathematical operationsVapor qualityCavitation
The invention relates to the technical field of fluid calculation, and discloses a phase-change-based cavitation simulation calculation method and device for a pressure pipeline, and the method comprises the steps: building a constant flow initial model of the pressure pipeline; setting initial conditions of the gas-liquid two-phase flow, and calculating parameters of the gas-liquid two-phase flow by using a bubble uniform distribution model; establishing a gas-containing gas-liquid two-phase flow finite volume method calculation equation; establishing a gas-liquid two-phase phase change cavitation mathematical model, and determining a model coefficient; when the pressure intensity of the pressure pipeline is reduced below the vaporization pressure intensity, the pressure pipeline parameters are substituted into a cavitation equation to calculate the steam mass; substituting into a cavitation equation and a water hammer bridging boosting equation to calculate cavitation bridging time and bridging pressure when the pressure is recovered to be higher than the vaporization pressure; according to the method, the cavitation and water hammer bridging pressure boosting equation is introduced, the method is suitable for cavitation and liquid column bridging phenomena, the application conditions are extended to the absolute air pressure close to zero, liquid is vaporized, and the application scenes of simulation calculation are increased.
Owner:CHINA THREE GORGES CORPORATION
A water-gas separation device based on steam quality measurement
The present invention discloses a technical field involving water-gas separation, specifically a water-gas separation device based on steam quality measurement, comprising a separation tank body, a liquid storage tank body being fixedly installed at the lower end of the separation tank body, a supporting cylinder being installed at the lower end of the inner cavity of the separation tank body, a reflux seat being fixedly installed at the upper end of the liquid storage tank body through a vertical plate, and the reflux seat being inserted into the inner cavity of the supporting cylinder; a separation seat being installed at the upper end of the supporting cylinder, an hourglass-shaped groove being penetrated from top to bottom at the upper end of the separation seat, and an exhaust circular pipe being rotatably installed at the upper end of the separation tank body through a bearing. The beneficial effect of the present invention is that steam enters the upper end of the inner cavity of the separation tank body along the air inlet pipe, and the exhaust circular pipe is driven to rotate by a driving mechanism at this time, and the spiral blade is driven to rotate by the rotating seat when the exhaust circular pipe rotates, and the steam is sent into the hourglass-shaped groove by the rotation of the spiral blade, so that the steam moves downward while rotating along the inner wall of the hourglass-shaped groove.
Owner:合肥智测电子技术股份有限公司
Methods and systems for starting up and operating one or more vapor-recompression units
PendingUS20260097331A1Evaporation with vapour compressionEvaporator accessoriesThermodynamicsVapor quality
A method for starting up vapor-recompression units or ramping up from low mass flow rates comprises: providing a vapor recompression sub-system, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system or ramping up from low mass flow rates while maintaining the restricted vapor mass flow rate for a time period; and then, following the time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a normal vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the normal vapor mass flow rate.
Owner:ENERGY INTEGRATION INC
Methods and systems for starting up and operating one or more vapor-recompression units
A method for starting up vapor-recompression units comprises: providing a vapor recompression sub-system comprising one or more vapor-recompression units, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction in vapor communication with the vapor recompression sub-system; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system while maintaining the restricted vapor mass flow rate for a start-up time period; and then, following the start-up time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a full vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the full vapor mass flow rate.
Owner:ENERGY INTEGRATION INC
Methods and systems for starting up and operating one or more vapor-recompression units
PCT designated stageWO2025264597A1Evaporation with vapour compressionWater/sewage treatment by heatingThermodynamicsVapor quality
A method for starting up vapor-recompression units comprises: providing a vapor recompression sub-system comprising one or more vapor-recompression units, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction in vapor communication with the vapor recompression sub-system; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system while maintaining the restricted vapor mass flow rate for a start-up time period; and then, following the start-up time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a full vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the full vapor mass flow rate.
Owner:ENERGY INTEGRATION INC
Waste heat boiler blowdown system
The invention relates to the technical field of waste heat boiler blow-off, and discloses a waste heat boiler blow-off system which comprises a three-stage evaporation system, a high-pressure boiler barrel, a medium-pressure boiler barrel, a low-pressure boiler barrel and matched evaporators, the boiler barrels are fixed to a furnace top steel frame through a supporting structure, and a superheater system comprises a high-pressure first-stage superheater, a high-pressure second-stage superheater, a low-pressure superheater and a matched water spraying temperature reducing device. The reheater system comprises a first-stage reheater, a second-stage reheater and a water spraying desuperheater; the sewage discharging system comprises an accident water discharging pipeline, a regular sewage discharging pipeline and a continuous sewage discharging pipeline, all the sewage discharging pipelines are connected into the sewage discharging flash tank, and the boiler is composed of an inlet flue, a heat exchange chamber, an outlet flue and a chimney. Meanwhile, inferior hot steam in the system can be discharged in time, the steam quality and the heat energy conversion efficiency are ensured, flue gas waste heat within various temperature ranges can be recycled, and gradient utilization of the waste heat is achieved.
Owner:HUANENG TAIYUAN DONGSHAN GAS TURBINE THERMAL POWER CO LTD
A full premix water-cooled mixed flow gas steam generator
This utility model discloses a fully premixed water-cooled mixed-flow gas-fired steam generator, comprising: an inlet chamber, a combustion chamber, a superheater, an evaporation chamber, and an economizer. The inlet end of the combustion chamber is connected to the outlet end of the inlet chamber. A water jacket is provided around the outer perimeter of the inner wall of the combustion chamber. Several first heat exchange tubes are provided in the combustion chamber. The inlet end of the superheater is connected to the outlet end of the combustion chamber. Heating coils are provided on the inner wall of the superheater. The inlet end of the evaporation chamber is connected to the outlet end of the superheater. An upper collection chamber and a lower collection chamber are respectively provided at the top and bottom of the evaporation chamber. Several second heat exchange tubes are provided in the evaporation chamber. The inlet end of the economizer is connected to the outlet end of the evaporation chamber. A water inlet tank and a water outlet tank are respectively provided on both sides of the economizer. Several third heat exchange tubes are provided inside the economizer. This utility model has high heat exchange efficiency, good steam quality, and fast response speed, and can efficiently and stably produce high-quality steam to meet the needs of various industrial production, while reducing energy consumption and production costs.
Owner:SHANDONG NUNTE HEATING TECH CO LTD
Hydrogen pipeline phase change simulation method
ActiveCN121118463BChemical property predictionDesign optimisation/simulationVapor qualityFluid phase
The present application relates to hydrogen pipeline simulation technical field, disclose a kind of hydrogen pipeline phase change simulation method, comprising: by geometric model, the hydrogen phase change physical model of hydrogen pipeline is constructed, hydrogen phase change physical model includes thermodynamic equilibrium model and wall boiling model;The property parameter model of liquid hydrogen and gaseous hydrogen is constructed;The boundary condition and initial value condition of hydrogen pipeline are constructed;According to hydrogen phase change physical model, property parameter model and boundary condition and initial value condition, when the liquid phase and steam phase of hydrogen in thermodynamic equilibrium model are in thermodynamic equilibrium, steam dryness and steam volume fraction are calculated;According to steam volume fraction, the surface heat flux of hydrogen pipeline is calculated by wall boiling model;According to surface heat flux and property parameter model, steam mass generation rate is calculated, and hydrogen pipeline phase change simulation is completed, the present application solves the technical problems that existing simulation result precision is lower, cannot accurately reflect the phase change rule in actual hydrogen pipeline.
Owner:TAIHANG NATIONAL LABORATORY
Monitoring of steam quality during sterilization with improved temperature control
A device for detecting a non-condensable gas including a tube having an open end and a closed end, the tube and the closed end being closed with respect to a fluid, the open end open to allow the fluid to move into and out of the tube, and the tube configured to allow a condensed portion of the fluid to be removed from the tube by gravitation. The device includes a heat sink configured to extract heat from the tube at the closed end. The device further includes a heat source configured to supply heat to the open end of the tube and at least one thermometer configured to measure a temperature at a specific portion of the device or the fluid inside the tube.
Owner:SOLIDTOO BV
Steam quality evaluation method and system
The invention belongs to the technical field of heat energy metering, and provides a steam quality evaluation method and system, and the method comprises the steps: obtaining the temperature, pressure and dryness of steam; according to the temperature, a polynomial fitting method is adopted to obtain constant-pressure specific heat capacity; according to the pressure, an enthalpy value at the corresponding saturation temperature is determined in a preset steam meter, and a saturated steam enthalpy value is obtained; determining an actual steam enthalpy value according to the saturated steam enthalpy value, and obtaining an enthalpy difference according to the actual steam enthalpy value and the saturated steam enthalpy value; according to the enthalpy difference and the dryness, a steam quality comprehensive factor is obtained through a weighted summation method; steam quality evaluation is carried out by utilizing the steam quality comprehensive factors, so that objective and quantitative evaluation of the steam quality is realized; based on the principle that the higher the dryness is, the less the liquid water drops carried by the steam are and the higher the heat energy transfer efficiency is, the influence of the heat energy transfer efficiency on steam quality evaluation is considered through the fusion of the dryness and the enthalpy difference, and the evaluation accuracy is improved.
Owner:BEIJING LUDIAN INTERNATIONAL POWER ENGINEERING CO LTD