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909 results about "Vapor generator" patented technology

Ventilation device

The invention discloses a ventilation device, which aims to solve the problem that the conventional ventilation device does not have an air adjusting function. The device comprises a pedestal, a high-speed air blower and an annular ejector, wherein the high-speed air blower is arranged at the bottom of the pedestal; the annular ejector is arranged at an air outlet of the high-speed air blower and is fixed on the pedestal; and the air inlet or the air outlet of the high-speed air blower is provided with a vapor generator which is fixed on the pedestal for producing water vapor. In the ventilation device, the water vapor is produced through the vapor generator and is ejected through an atomization nozzle at a high speed to produce fog of smaller granularity, so that a hot air flow can more easily absorb the latent heat of vaporization, and the ventilation device has a humidification effect and a heat absorption and temperature reduction effect on a large amount of hot air sucked by the annular nozzle, and brings comfortable cool air similar to air on the shore of a lake or a sea to the surrounding environment. In the ventilation device, an external circulating device is not required to be mounted, so the cost is low; the space is not required to be closed, so that air convection is guaranteed; and the ventilation device is more energy-saving in the same temperature reduction range compared with a fan and an air conditioner, and can be used conveniently and safely.
Owner:曾小颖 +1

Reactor thermal-hydraulic simulation testing apparatus and fluid dynamics characteristic simulation method

The invention discloses a reactor thermal-hydraulic simulation testing apparatus which comprises a reactorsimulation body, a vapor generator simulation body and a main circulating pump. The inlet and the outlet of the vapor generator simulation body are communicated with the outlet of the reactorsimulation body and the inlet of the main circulating pump, and the outlet of the main circulating pump is communicated with the inlet of the reactorsimulation body. A heat-section resistance adjusting part is arranged on the pipeline between the inlet of the vapor generator simulation body and the outlet of the reactorsimulation body, a cold-section resistance adjusting part and a stop valve are arranged on the pipeline between the outlet of the vapor generator simulation body and the inlet of the main circulating pump, and a pump way resistance adjusting part and a Venturi flowmeter are arranged on the pipeline between the outlet of the main circulating pump and the inlet of the reactorsimulation body. The invention further discloses a fluid dynamics characteristic simulation method based on the reactor thermal-hydraulic simulation testing apparatus. During application, fluid dynamics characteristics are adjusted to be consistent to a reactor prototype for implementation, and the testing efficiency of a simulation test can be improved.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Method for establishing blocking condition models of heat transfer tubes of vapor generators in nuclear power plants

The invention discloses a method for rapidly establishing three-dimensional fine thermos-hydraulic calculation models for primary side systems of large-scale natural circulation vapor generators in nuclear power plants under certain heat transfer tube blocking accident conditions. The method comprises the following steps of: 1, carrying out complete primary side hydraulic analysis on a vapor generator so as to analyze a flow distribution law at a tube plate; 2, selecting a tube blocking scheme according to a result of the last step; 3, determining a tube blocking share and a tube blocking position; 4, carrying out geometric simplification and overall geometric modeling on a plurality of heat transfer tubes in the real vapor generator; 5, dividing preliminary calculation nodes; 6, establishing a tube blocking equation to tracing marked control areas, and carrying out calculation domain grid marking on the control areas by adoption of a network marking method so as to realize a tube blocking function; and 7, carrying out blocking condition calculation by adoption of a preliminarily established model and analyzing the precision of the result, and if a requirement is satisfied, considering that the modeling is completed, and otherwise, returning to the step 5 to encrypt the calculation nodes until the model satisfies the calculation precision requirement.
Owner:XI AN JIAOTONG UNIV

Shockproof strip end-plate material of vapor generator of nuclear power plant and preparation method thereof

The invention discloses a shockproof strip end-plate material of a vapor generator of a nuclear power plant and a preparation method thereof, relating to a shockproof strip end-plate material of a vapor generator of a pressurized water reactor nuclear island CPR1000. The shockproof strip end-plate material is prepared from the following components in percentage by weight: 0.003-0.08 percent of C, 0.1-0.4 percent of Si, 0.3-0.8 percent of Mn, not more than 0.015 percent of P, not more than 0.01% of S, 14-17 percent of Cr, 72-78 percent of Ni, 0.05-0.5 percent of Cu, 0.05-0.5 percent of Ti, 0.05-0.5 percent of Al, 6-10 percent of Fe, 0.01-1.0 percent of Xt and the balance of inevitable impurities. The preparation method of the shockproof strip end-plate material comprises the following steps of: preparing raw materials; smelting in a vacuum refining furnace; refining electroslag; forging; thermally rolling; normalizing; and repeating the process of drawing-annealing- drawing) many times to obtain a finished product of shockproof strip end-plate material. The designed shockproof strip end-plate material of the vapor generator of the nuclear power plant has reasonable content design, excellent resistance of corrosion, fatigue and creep properties and processing performance and has very important economic meaning to improve the production efficiency, effectively prolong the service life of the vapor generator of a nuclear power plant and decrease the production cost.
Owner:JIANGSU XINHUA ALLOY ELECTRIC

Replacement system of organic Rankine cycle low-temperature power generation working medium and replacement method thereof

The invention provides a replacement system of an organic Rankine cycle low-temperature power generation working medium and a replacement method thereof. The replacement system of an organic Rankine cycle low-temperature power generation working medium comprises a vacuum pump, a booster pump, a working medium hold-up vessel and a fluid reservoir, wherein the output end of the vacuum pump is connected to the input end of the booster pump by a first valve; the output end of the booster pump is connected to the steam generator of a circulating system by a fourth valve; the booster pump is connected to the working medium hold-up vessel by a third valve; the other end of the working medium hold-up vessel is connected to the fluid reservoir by a second valve; and meanwhile, the fluid reservoir is also respectively connected with the vacuum pump and the condenser of the circulating system. When working medium needs to be injected into the low-temperature power generation system of the organic working medium, air is extracted from the circulating system by the vacuum pump to cause the system to generate vacuum degree; the working medium is injected into the fluid reservoir by differential pressure to inject the working medium; and when the low-temperature power generation system halts and needs to recover the working medium, and the working medium in the fluid reservoir is injected back to the working medium hold-up vessel by the booster pump, thereby recovering the working medium.
Owner:XI AN JIAOTONG UNIV

A device for producing combustible gas by plasma pyrolysis and oxygen-enriched combustion-supporting materials

The invention relates to the technical field of combustible gas preparation by virtue of biomass pyrolysis and gasification and further relates to the clean energy field of combustible gas preparation by virtue of pyrolysis and gasification of waste polymer compounds. The device consists of a gasification furnace, a plasma generation device, an oxygen-enriched combustion-supporting device, a biomass transporting device, a cyclone separation conveying device, a steam generation device, an air blower and a slag processing device, wherein the plasma generation device, an oxygen-enriched combustion-supporting pyrolysis region, a steam-adding thermalization reaction region and a second cracking region are arranged in a gasifying hearth; and multiple operation and control means are set, thereby conveniently regulating and controlling the furnace temperatures of various functional regions in the furnace to the optimal temperatures for gasifying the biomass or polymer compounds. By using the device, the generation of tar and K and Na metal salt gases can be avoided, thus the device provided by the invention is a combustible gas preparing device capable of improving the gasifying efficiency and the product quality, reducing the energy consumption and prolonging the service life of equipment.
Owner:SUNSHINE KAIDI NEW ENERGY GROUP CO LTD

Interbank two-phase flow instability and alternating heat stress research testing device under load shedding disturbance

The invention aims at providing an interbank two-phase flow instability and alternating heat stress research testing device under load shedding disturbance. A preheater and a vapor-water separator are installed at the two ends of an experimental section respectively, a water storage tank is respectively connected with a condenser and the preheater through pipes, the preheater is connected with the experimental section through a high-pressure pump, and a self-reliance type pressure flow combination valve is installed at an outlet of the experimental section. A double-end conducting probe, a pressure sensor, an orifice plate flowmeter, a stress strain gage and a sheathed thermocouple are installed on the experimental section. According to the interbank two-phase flow instability and alternating heat stress research testing device under load shedding disturbance, the method that primary side high-temperature high-pressure fluid is used for heating secondary side fluid is used, a U-type bank of the experimental section is arranged in a square mode, the characteristics of actual vapor-liquid two-phase flow of a vapor generator can be well reflected, the temperature and stress of the same position are measured, change rules of stress strain of a heat transmitting pipe are researched under the joint effect of the external force and the temperature, and a damage mechanism of the heat transmitting pipe of the vapor generator under specific disturbance caused by load shedding is disclosed.
Owner:HARBIN ENG UNIV

Garbage carbonization reacting system

The invention provides a garbage carbonization reacting system. The system comprises a reaction still, a reaction tank, a vapor generator and a control device, wherein the vapor generator is connected with the reaction still, and the vapor generator is used for supplying vapor to the reaction still; the reaction tank is used for placing garbage. When a reaction is carried out, the reaction tank is pushed into the reaction still to react to generate a carbonization mixture; after the reaction is completed, the reaction tank is pulled out of the reaction still. The reaction still comprises a still body and a still cover, wherein the still body is connected with the still cover in a sealing manner; the control device is connected with the reaction still, and the control device is used for controlling the change of the pressure and the temperature in the reaction still and the reaction time; a first guide rail which extends in the length direction of the still body is arranged in the still body. The system disclosed by the invention has the advantages that the structural scheme is reasonable, the device is advanced, the degree of automation is high, the investment cost of equipment is low, the occupation area of a required plant is small, and burning value of prepared biomass fuel is high, and the discharge is low.
Owner:NANTONG QIANGSHENG SAFETY PROTECTION TECHNOLOGY CO LTD
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