17results about "Water accumulator" patented technology

The invention discloses a fused salt heat storage and Carnot cell combined coal-fired unit peak-load regulation operation method, device and equipment, a medium and a product, and relates to the field of unit peak-load regulation operation. Acquiring information data; based on a power regulation demand prediction model, performing peak regulation demand prediction according to the information data to obtain a prediction result; the power regulation demand prediction model is obtained by adopting a multi-objective optimization model and performing time sequence analysis on a long-short-term memory network model; determining an energy scheduling strategy based on the prediction result; the energy scheduling strategy comprises a heat storage power coordination instruction and a heat release power coordination instruction; and according to the energy scheduling strategy, operation adjustment is conducted on the coal-fired unit, the fused salt heat storage subsystem and the Carnot battery subsystem based on the control system. The invention aims to improve the peak regulation performance of the coal-fired unit.

The invention discloses a coal-fired unit power generation system with peak shaving capacity and a peak shaving method, and belongs to the technical field of thermal power generation. The system comprises a coal-fired power generation subsystem, a fused salt heat storage subsystem and a primary air heating subsystem; the coal-fired power generation subsystem comprises a boiler and a steam turbine generator set; the fused salt heat storage subsystem comprises a fused salt steam heat exchanger, a high-temperature fused salt tank, a low-temperature fused salt tank and a fused salt water supply heat exchanger; the primary air heating subsystem comprises a steam air heat exchanger. The peak shaving method comprises the steps that when the coal-fired unit power generation system operates at a low load or reduces the load, main steam exchanges heat with low-temperature fused salt, and part of heat is stored; steam at an outlet of the fused salt steam heat exchanger exchanges heat through the steam-air heat exchanger to reheat primary hot air of the boiler; when the load of the coal-fired unit power generation system rises, heat is released, and feed water is heated through the fused salt feed water heat exchanger. The peak regulation depth of the unit is greatly increased by extracting steam and storing heat and increasing the primary air temperature, and the output and combustion state of the low-load coal mill is improved.

The invention relates to the technical field of waste heat recovery of Bayer process aluminum oxide production, in particular to a seven-effect five-flash condensate water waste heat grading system and an aluminum oxide production device. According to the system, the first-effect condensate water and the second-effect condensate water are divided into two independent loops according to the thought of'temperature alignment and stepped recovery ', namely the first-effect condensate water and the second-effect condensate water, and the condensate water cooled by the two loops finally converges into the same recovery tank and then is pumped back to a boiler or a deaerator. Due to the fact that heat needed by the stock solution, the washing water and the secondary steam condensate water is all borne by original directly-discharged first-effect waste heat and second-effect waste heat, the amount of new steam needing to be supplemented by the evaporator is correspondingly reduced. And meanwhile, the first-effect heat transfer temperature difference of the evaporator is reduced, the system can maintain the seven-effect total temperature difference under the lower new steam pressure, and closed-loop energy saving of replacing new steam with waste heat is achieved.

In a hydrogen boiler (3), hydrogen gas and oxygen gas supplied from a water electrolysis device (2), which generates the hydrogen gas and the oxygen gas by electrolyzing water, are combusted in a combustion chamber of the hydrogen boiler (3), and a water pipe of the hydrogen boiler (3) is heated, thus generating water vapor.

The invention provides a heat storage method of a fused salt coupling steam energy accumulator full-energy heat storage technology, and belongs to the technical field of steam energy storage and energy storage flexibility. Based on a heat storage system, the heat storage system comprises a fused salt heat storage system, a steam energy accumulator heat storage system and a heat storage control system; the heat storage control system comprises a steam supply pipeline, a first adjusting valve group, a second adjusting valve group and a third adjusting valve group, in the heat storage method, when the steam energy accumulator stores heat to be full before the high-temperature molten salt tank, the second adjusting valve group is opened, and steam flowing out of the heat storage medium passage is used for industrial steam supply; when the high-temperature molten salt tank is filled with heat before the steam energy accumulator, the third regulating valve group is opened to supply a cold medium to the desuperheater to cool the steam which is about to enter the steam energy accumulator; high-grade sensible heat, low-grade sensible heat and all latent heat of steam heat energy can be fully utilized, the energy utilization rate is increased, regulation and control of the heat storage system are more flexible, and meanwhile economic benefits are increased.

The invention provides a heat supply system of a photo-thermal coupling thermal power generating unit and an operation method, and belongs to the technical field of heat supply. According to the system, a groove type condenser field, a high-low temperature storage tank and a heat exchange assembly are coupled to a traditional heat supply thermal power generating unit, one end of the groove type condenser field is connected with the low temperature storage tank, the other end of the groove type condenser field is connected with the high temperature storage tank, and a working medium is heated through solar energy; the high-temperature storage tank and the low-temperature storage tank are respectively connected with the heat exchange assembly to heat condensed water of the thermal power generating unit or heat supply network return water to supply heat to a heat supply or steam supply pipeline. The system is applied to a photo-thermal coupling thermal power generating unit heat supply system, changes of peak regulation and peak requirements, heat supply loads and illumination resources of a thermal power generating unit are monitored in real time, the peak regulation and peak regulation capacity of the thermal power generating unit is enhanced, and meanwhile heat supply stability is guaranteed.

The utility model relates to the technical field of energy utilization, and discloses a heat supply system of a steam pipeline, which comprises a boiler, a main pipeline and a first pipeline arranged between the boiler and the main pipeline, a valve is arranged on the first pipeline, and a water inlet end of the boiler is connected with an energy storage vehicle through a second pipeline. And a closing mechanism with a buffering function is mounted on the second pipeline. The energy storage vehicle is further connected with the input end of the main pipeline through a third pipeline, and the third pipeline is further provided with a closing mechanism with the buffering function. According to the utility model, the closing mechanisms are respectively arranged on the second pipeline and the third pipeline, and when the valve core is closed, a small amount of water can flow into the buffer groove, so that a buffer effect can be achieved, the phenomenon that the first pipeline or the second pipeline is broken due to a water hammer effect is reduced, and the service lives of the first pipeline and the second pipeline are prolonged.

The invention discloses a Carnot battery system based on two-stage heat charging and discharging and reversible cascade Rankine cycle. The Carnot battery system comprises an organic Rankine heat pump cycle loop, a water vapor Rankine heat pump cycle loop, an organic Rankine power generation cycle loop and a water vapor Rankine power generation cycle loop, according to the invention, the integrated cascade Rankine cycle two-stage heat pump heat charging and two-stage heat release power generation are adopted, so that the technical problems of high vacuum compression, high compression ratio and high superheat degree of water vapor are avoided, and the energy gradient utilization of high-pressure heat storage water is realized; the system is high in integration level, good in operation reliability, long in energy storage time, and high in energy storage efficiency and round-trip efficiency.

The utility model discloses a steam generator starting preheating system of a photo-thermal power station, relates to the technical field of natural circulation steam generators, and solves the problem of cold-state starting preheating of a steam generator system. A steam pocket, an evaporator and a preheater are sequentially arranged in the height direction from top to bottom; the upper side of the preheater communicates with the steam pocket through a pipeline; the upper side of the evaporator is connected with the lower side of the steam pocket through an ascending pipe; the preheating cycle starting bypass comprises a main path and two branches, the main path is connected with the steam pocket, and the main path is connected with the evaporator and the preheater through the two branches; a heater is arranged on the main circuit. The boiler water in the steam pocket, the evaporator and the preheater is continuously and circularly heated through the arranged starting preheating circulating bypass, the boiler water is heated into saturated steam water, part of the generated saturated steam is discharged to heat the superheater and the reheater, and starting preheating of all equipment is achieved.

The present invention relates to a system and a method for providing steam. In particular, the present invention relates to a steam delivery system comprising a thermal energy storage apparatus for heating a flow of feedwater to produce steam at a predetermined temperature and / or a predetermined pressure.

To reduce emissions of exhaust gases containing substances that have an impact on the global environment. [Solution] The hydrogen boiler 3 burns hydrogen gas and oxygen gas supplied from a water electrolysis device 2 that electrolyzes water to produce hydrogen gas and oxygen gas in the combustion chamber of the hydrogen boiler 3, heating the water tubes of the hydrogen boiler 3 and generating steam.

To suppress discharge of exhaust gas containing a substance affecting the global environment.SOLUTION: The hydrogen boiler 3 burns, in a combustion chamber of the hydrogen boiler 3, hydrogen gas and oxygen gas supplied from the water electrolyzer 2 that electrolyzes water to generate hydrogen gas and oxygen gas, and heats a water pipe of the hydrogen boiler 3 to generate steam.SELECTED DRAWING: Figure 1

This invention discloses a turbulence-type ultra-high pressure thermal storage steam electric boiler system and its control method. The system generates steam using a self-pressurization and flash evaporation method. The system includes a water treatment module (A), a steam turbulence module (B), a steam generation module (C), a compensating heating module (D), and a pipeline connection and information transmission module. This invention uses circulating water as the energy storage medium, storing excess electrical energy as heat energy by electrically heating the water. Industrial steam is generated by controlling solenoid valves and steam flash valves. This invention can serve as an electrical energy transfer terminal, converting off-peak electricity into heat energy and storing it in multiple parallel electric heating boilers. Industrial steam is obtained by adjusting the boiler valves according to actual needs, allowing for flexible use.

The utility model discloses a multifunctional movable heat storage and supply tank which comprises a tank body, a pipeline and accessory equipment, and the tank body is provided with a hot water / steam inlet pipe; one end of the hot water / steam inlet pipe is connected with an external hot water / steam source, the other end is closed and extends into the tank body, and a plurality of small holes are formed in the hot water / steam inlet pipe; a steam-water separation component and a steam outlet pipe are arranged at the upper part of the tank body; the steam-water separation assembly comprises a corrugated plate separator, a drain pipe, a flow equalizing pore plate and other structures; an inlet and an outlet of the heat exchange pipe are arranged outside the tank body; a wave-proof plate is arranged in the tank body, and a pressure relief pipe, a blow-off pipe and the like are further arranged outside the tank body. Hot water or steam is filled into the tank body through the hot water / steam inlet pipeline, various industrial waste heat can be utilized by utilizing the heat exchange pipe, and high-quality steam and hot water can be obtained through the steam-water separation assembly, the steam outlet and the hot water outlet.

The present invention relates to a system and a method for providing steam. In particular, the present invention relates to a steam delivery system comprising a thermal energy storage apparatus for heating a flow of feedwater to produce steam at a predetermined temperature and / or a predetermined pressure.

The invention discloses an oil field heat supply system and a control method, relates to the technical field of thermal engineering, and discloses the oil field heat supply system which comprises a heat supply module and a heat storage module. And the heat supply module is connected with the heat storage module and external heat utilization equipment. And the heat storage module is also connected with external heat utilization equipment. The heat supply module is used for supplying heat to external heat utilization equipment and the heat storage module; when the heat supply load of the heat supply module is insufficient, the heat storage module is used for supplementing; when the heat supply load of the heat supply module is excessive, heat is stored in the heat storage module, so that heat resources are saved; when the heat supply module does not need heat supply, the economic cost is saved through valley electricity heat storage; due to the introduction of the heat storage module in the oil field heat supply system, the flexibility and economical efficiency of the heat supply system are greatly improved, the application scene is wider, and the energy utilization rate is increased.

The application discloses a kind of superhigh pressure steam boiler system and regulation and control method using valley electricity heat storage, the system generates steam using electric heating self-pressurization, flash evaporation method, the system is six parts: water treatment module, high-pressure water heating, heat storage module, temperature and pressure reducing module, steam generation module, compensation heating module, pipeline connection and information transmission module;The application uses circulating water as energy storage medium, and stores the excess electric energy in the form of heat energy by electrically heating water, and produces industrial steam by controlling solenoid valve and steam flash valve.The application can be used as an electric energy transfer terminal, and converts valley electricity into heat energy and stores it in multiple parallel electric heating boilers.According to actual demand, the valve of the boiler is adjusted to obtain industrial steam, which is flexible to use.