63results about "Steam accumulators" patented technology

The invention discloses a salt cavern gravity compressed air energy storage system which comprises a salt cavern, a vertical shaft is vertically formed in the top of the salt cavern and communicated to the ground surface, a sealing film is arranged on the side wall of an inner cavity of the salt cavern and divides the salt cavern into a water storage cavity and an air storage cavity, and the bottom of the air storage cavity is connected with one end of an air pipe. A piston is arranged in the vertical shaft, a gravity block is arranged at the top of the piston, a water pipe communicated with the water storage cavity is arranged at the bottom of the water storage pool, and a water conservancy generator set is arranged on the water pipe. Liquid gravity is matched with salt cavern gas storage, liquid can be matched with the irregular shape of a salt cavern, construction is reduced, energy density is increased, construction difficulty can be reduced through ground surface construction, the problem that a traditional compressed air energy storage system is large in investment cost is solved, and meanwhile the problem that salt cavern resources are reused is solved.

A method may include obtaining, from a camera device, thermal image data for a steam area of a plant facility. The steam area may include a steam trap for a steam network. The method may further include obtaining plant steam data regarding the steam trap. The method may further include determining pixel data regarding the steam trap using the thermal image data and an image segmentation process. The method further includes determining various temperature values across the steam trap using the pixel data. The method may further include determining predicted steam trap data using the temperature values, the plant steam data, and a machine-learning model. The method may further include transmitting a command that adjusts one or more parameters of the steam network based on the predicted steam trap data.

A steam power cycle thermoelectric decoupling system includes a molten salt heat storage system, a steam accumulator heat storage system, and a preheating system. The steam accumulator heat storage system is taken as a main heat storage component, which solves low heat storage efficiency and high heat storage costs by simply using molten salt. Saturated steam released by the steam accumulator heat storage system is heated to a superheated state by heat stored in the molten salt heat storage system, achieving supplement of the saturated steam released by the steam accumulator heat storage system to the heat supply network, and the preheating system is utilized for solving the problem that the temperature of steam output from the steam accumulator heat storage system is lower than the solidifying point temperature of the molten salt, causing the solidification of molten salt.

The invention relates generally to methods and apparatus for operation of hydrogen fueled electric power plants integrated with thermal energy storage. It is an object of this invention to reduce the cost of providing reliable electricity from variable renewable energy sources by storing excess renewable energy and using the stored renewable energy to reduce the quantity of fuel required, to reduce the cost of producing hydrogen fuel by electrolysis, and to produce and store hydrogen at the power plant to eliminate the cost of transporting hydrogen and the need to upgrade natural gas pipelines and pipeline compressors.

An integrated hermetic device for Combined Heat and Power (CHP) energy generation arrangements, such as Heller- type thermal cycles, which integrates within a hermetic and sealed module in a vertical and aligned manner at least one vapor expander, an electric generator, a direct contact condenser and at least one pump, arranged in conjunction with a volume compensator vessel and flow control arrangement, providing this device with innovative and advantageous features in terms of costs, ease of installation and maintenance, and operational simplicity, while not requiring extra lubricating agents in the bearings, operating only with the same working fluid, whereby the tightness of the internal conduits is no longer critical. This integration enables working in thermodynamic vacuum conditions without exposing the rest of the installation to such condition, minimizing the possibility of non- condensable gases ingress, such as air, and avoiding the working fluid losses to the environment.

The invention relates to a steam accumulator power plant (01) having a water-steam circuit. The latter has, in a direct or indirect sequence, a water tank (02), an evaporator (04), a steam pump (05) which (05) allows a pressure of between 15 bar and 50 bar at the outlet, a desuperheater (06), a steam accumulator (07), a steam heater (08), a steam turbine (09), and a condenser (10). For heat storage, heat transfer from the steam to a heat storage medium takes place in the desuperheater and heat transfer from the heat storage medium to the steam takes place in the steam heater.

The invention provides a wave energy collecting device based on compressed air energy storage, and relates to the field of wave energy power generation. The device comprises an air turbine assembly and an energy storage assembly, wherein the air turbine assembly comprises an installation platform (internally provided with a cavity) and a wave energy pressure storage air bag (installed on the lower surface of the platform and changing the air pressure of the cavity along with waves); a turbine air inlet / outlet pipe penetrates through the cavity of the platform and is provided with an air turbine device; the air inlet pipe is provided with a first one-way valve (air flows into the cavity from the outside) and a first electromagnetic valve; the air outlet pipe is provided with a fifth one-way valve (air flows out of the cavity); the energy storage assembly is divided into low pressure and high pressure, the high-pressure assembly is immersed in seawater, the low-pressure assembly is connected with a platform cavity through a low-pressure air inlet pipe and communicated with the high-pressure assembly through an air compressor, and the high-pressure assembly is connected with a turbine air outlet pipe P point (located between a fifth one-way valve and an outlet) through a high-pressure air outlet pipe (provided with a fifth electromagnetic valve and immersed in seawater); seawater is used for cooling the high-pressure gas storage tank, and the gas storage capacity and safety are improved.

The utility model discloses a salt cavern gravity compressed air energy storage system which comprises a salt cavern, a vertical shaft is vertically arranged at the top of the salt cavern and communicated with the ground surface, a sealing film is arranged on the side wall of an inner cavity of the salt cavern and divides the salt cavern into a water storage cavity and an air storage cavity, and the bottom of the air storage cavity is connected with one end of an air pipe. A piston is arranged in the vertical shaft, a gravity block is arranged at the top of the piston, a water pipe communicated with the water storage cavity is arranged at the bottom of the water storage pool, and a water conservancy generator set is arranged on the water pipe. Liquid gravity is matched with salt cavern gas storage, liquid can be matched with the irregular shape of a salt cavern, construction is reduced, energy density is increased, meanwhile, sealing film damage caused by contact friction between a sealing film and the surface of the gravity block is avoided, and the service life of the sealing film is prolonged; and the hydraulic generator set can synchronously generate power, so that the energy storage efficiency is improved.

This system stores and generates electricity using heat pumps and heat engines that interconvert thermal energy and mechanical energy via gerotor compressors and expanders. The gerotors have advanced features that allow for variable pressure ratios, reduced leakage via improved seals, and longer bearing life from mechanisms that unload the bearings.

The invention relates generally to methods and apparatus for operation of hydrogen fueled electric power plants integrated with thermal energy storage. It is an object of this invention to reduce the cost of providing reliable electricity from variable renewable energy sources by storing excess renewable energy and using the stored renewable energy to reduce the quantity of fuel required, to reduce the cost of producing hydrogen fuel by electrolysis, and to produce and store hydrogen at the power plant to eliminate the cost of transporting hydrogen and the need to upgrade natural gas pipelines and pipeline compressors.

The present invention belongs to a liquid compressed air energy storage system, and solves the two main schemes for the compression heat release and expansion heat absorption of air in the process of compressed energy storage and power generation in the existing liquid compressed air energy storage system, which either have the problems of large initial investment and poor variable operating condition performance, or high fuel consumption and large pollutant emissions. A liquid compressed air energy storage system coupled with a thermal system of a coal-fired power generation unit is provided, comprising an air compressor, an air cooler, a refrigeration expander, a gas-liquid separator, a liquefied air storage device, a liquid booster pump and a plurality of air heaters connected in sequence; wherein the heating temperatures of the plurality of air heaters are increased in sequence; the plurality of air heaters are respectively connected to a plurality of steam source points of a steam turbine in the coal-fired power generation unit, and the pressure and temperature of each steam source point are different.

The invention describes a saturated steam storage system for storing water vapor, comprising a container (2) in which water can be stored in its condensed state and as water vapor during operation, a charging device (4) for charging the saturated steam storage system with water vapor, and a discharging device (6) for extracting water vapor from the saturated steam storage system, as well as a method for operating a saturated steam storage system. To improve the discharge capacity without incurring significant disadvantages regarding space requirements, the invention provides a distribution device, in particular comprising at least one nozzle (16), for atomizing water in an upper region of the container (2), or introduces condensed water into an upper region of a container (2).

The invention relates to the related technical field of steam power generation, in particular to an annular cooler waste heat and waste heat power generation device which comprises an outer shell, an energy absorption module, an energy storage module, a separation module, a feedback module, a release module and a power generation module. Energy in waste gas is converted through the energy absorption module and temporarily stored through the energy storage module, impurities in the waste gas are separated through the separation module, then the separated impurities are gathered, combusted and re-supplied to the waste gas with the energy absorbed, heat of the impurities is utilized to a high degree, and the energy-saving effect is achieved. And then, the temporarily stored energy is uniformly released and returned to the gas, the high-temperature and high-pressure gas with uniform temperature and pressure is obtained under the condition that the gas energy is not lost as much as possible and is used for power generation, the waste gas power generation efficiency of the circular cooler is improved, and the stability of energy storage and release is achieved through the design of the multiple energy storage tanks. Therefore, the power generation stability is ensured.

The present invention relates to systems and methods for supplying steam. In particular, the present invention relates to a steam delivery system that includes a thermal energy storage device for heating a feedwater stream to produce steam at a predetermined temperature and / or pressure.

Apparatus comprising a plasma generating and controller and methods of controlling a plasma generating vessel are disclosed. The apparatus 100 comprises a plurality of plasma generating vessels 1a,b,c

This invention relates to a refrigeration system designed as Rotary Supercharger Ejector Refrigeration System to improve the coefficient of performance and to reduce mechanical complexity. The design ensures that the working fluid performs expansion work as it passes through the generator. On the other hand, it eliminates the need for subcooling the liquid entering the pump. The design allows conversion of the high-speed kinetic energy from the ejector's outlet stream into recoverable potential energy. Consequently, the cycle closely approaches the ideal cycle. The rotation of coils increases convective heat transfer between coils and the atmosphere and eliminates the need for a blower as well as a complex mechanical pump. In addition to coil-air heat exchange, the system can be thermally coupled with hot rotating bodies to absorb waste heat and generate effective cooling.

An energy transformation and storage plant comprises a main circuit for a working fluid other than atmospheric air. The main circuit connects a storage device (205), a compression unit, a thermal accumulator (100, 210), a reservoir (209) and an expansion unit and is configured to operate the plant in an energy storage configuration or in an energy discharge and generation configuration by a displacement of the working fluid between the storage device (205) and the reservoir (209) through the main circuit and via a cyclic thermodynamic transformation of the working fluid. The plant further comprises an auxiliary circuit (1) which connects the main circuit and / or the storage device (205) and / or the compression volume of the compressor (203) and / or the expansion volume of the expander (202) with at least one portion of the compression unit and / or of the expansion unit, so as to control a temperature and / or a pressure of this portion through the same working fluid.

The invention relates to a system comprising a Carnot battery comprising a module for transforming electricity into heat, a thermal storage module, and a heat transformation module, comprising a steam cycle and a turbine arranged on the steam cycle for the purpose of producing electricity. The system comprises an additional thermal storage unit fluidically connected to the steam cycle and intended for storing steam from the steam cycle and separate from the thermal storage module of the Carnot battery, the additional thermal storage unit comprising at least one thermal storage device, a buffer tank and a fluid connection for supplying the buffer tank, a fluid connection for supplying steam to the turbine, a return fluid connection, a load fluid connection and a discharge fluid connection.

The invention relates generally to methods and apparatus for operation of hydrogen fueled electric power plants integrated with thermal energy storage. It is an object of this invention to reduce the cost of providing reliable electricity from variable renewable energy sources by storing excess renewable energy and using the stored renewable energy to reduce the quantity of fuel required, to reduce the cost of producing hydrogen fuel by electrolysis, and to produce and store hydrogen at the power plant to eliminate the cost of transporting hydrogen and the need to upgrade natural gas pipelines and pipeline compressors.

The invention relates to a steam storage power plant (01) with a water-steam cycle. This cycle comprises, in direct or indirect sequence, a water storage tank (02), an evaporator (04), a steam pump (05) which enables an outlet pressure between 15 bar and 50 bar, a steam cooler (06), a heat storage tank (07), a steam heater (08), a steam turbine (09), and a condenser (10). For heat storage, heat is transferred from the steam to a heat storage medium in the steam cooler and from the heat storage medium to the steam in the steam heater.

A circular multi-stage cooling and pressure reducing device attached to a steam turbine bypass system is provided. The system includes a pressure reducing tank 1, a water storage unit 3, and a steam pipe unit 4, of which the steam pipe unit is assembled inside the pressure reducing tank, the water storage units are mounted on both sides of the pressure reducing tank, and the motor component includes a servo motor 21, a first tapered tooth 22 is connected to the output end of the servo motor, and a second tapered tooth 23 is connected to the outside of the first tapered tooth. The annular multi-stage cooling and pressure reducing device performs annular water spraying on multiple sets of water spraying components to reduce the temperature of the position limiting mechanism, increase the atomization effect and flow rate of the water, and improve the cooling and cooling effect of the steam pipe unit, while avoiding the reduction in the working efficiency of the steam turbine caused by energy loss when the conventional cooling and pressure reducing device cannot be adjusted and there is no need to perform cooling and pressure reducing of the steam turbine bypass system.

The energy storage plant (1) comprises a casing (5) for storing a working fluid different from the atmosphere in a gaseous phase in pressure equilibrium with the atmosphere, and a tank (9) for storing the working fluid in a liquid or supercritical phase having a temperature close to a critical temperature, the critical temperature being close to ambient temperature. The plant (1) is configured to perform a closed cyclic thermodynamic conversion (CTT) between the casing (5) and the tank (9), first in one direction in a charging configuration and then in the opposite direction in a discharging configuration, so that the plant (1) stores heat and pressure in the charging configuration and generates mechanical energy in the discharging configuration to drive a driven machine.

There is disclosed a thermal energy storage and supply apparatus (100) comprising: a pressure vessel (110); a heat exchanger (120); a circulation path (130) extending from a steam outlet (114) of the pressure vessel to a condensate inlet (112) of the pressure vessel, via the heat exchanger. The pressure vessel is configured to store primary process water as saturated liquid water and steam at a storage pressure of at least 0.5 MPa. The apparatus comprises an electrically-powered heater (140) configured to heat liquid primary process water stored in the pressure vessel to vary a storage pressure within the pressure vessel, and a valve arrangement disposed along the circulation path for controlling flow of primary process water through the heat exchanger along the circulation path. A controller (160) and / or the valve arrangement is configured to selectively control flow of primary process water through the heat exchanger using the valve arrangement, to meet a thermal energy demand associated with the flow of secondary water.

An energy system having a) one or more catalyst sources which store a catalyst; b) one or more water sources which store water; c) one or more heat sources which store a heat storage medium; d) one or more reaction chambers into which the water, the catalyst, and the heat storage medium are introduced, which are configured for an exothermic reaction between the catalyst and the water to take place while in the presence of the heat storage medium, and in which steam is generated from the exothermic reaction; and f) one or more turbines downstream of the one or more reaction chambers which are adapted to be driven by the steam generated within the one or more reaction chambers.

The invention relates to a device (100) for generating electrical and / or mechanical energy using an ORC system which has a working medium circuit (10) for a working medium, wherein the working medium circuit (10) comprises a working medium evaporator (11), an expansion machine (19) operated using working medium vapour from the working medium evaporator (11), and a condenser (12). A source medium flow can flow through the working medium evaporator (11) on a working medium evaporator primary side (111) in order to transfer thermal energy contained in the source medium flow to the working medium and to thereby at least partially evaporate the working medium. The working medium vapour is fed to the expansion machine (19) from the working medium evaporator (11) at a predetermined degree of saturation. The invention also relates to a method for operating a working medium circuit (12) using an ORC system.

The invention relates to a storage system for storing thermal energy with a charging circuit which comprises, in direct or indirect sequence, an evaporator and a compressor and a charging heat exchanger coupled to a heat storage device and a throttle. A discharge circuit is used to recover the energy stored in the heat storage system. The discharge circuit comprises, in direct or indirect sequence, a pump and a discharge heat exchanger, a steam turbine, and a condenser. To recover the thermal energy, the discharge heat exchanger is coupled to the heat storage system. To optimize heat utilization, both the evaporator and the condenser are coupled to a common cold storage tank.

An energy conversion and storage device includes a main circuit for a working fluid other than atmospheric air. The main circuit connects the storage device (205), the compression unit, the heat accumulator (100, 210), the reservoir (209) and the expansion unit and is configured to operate the apparatus in an energy storage configuration or in an energy discharge and generation configuration by displacement of the working fluid between the storage device (205) and the reservoir (209) through the main circuit and via a cyclic thermodynamic transformation of the working fluid. The apparatus further comprises an auxiliary circuit (1) connecting the main circuit and / or the compression volume of the storage device (205) and / or the compression volume of the compressor (203) and / or the expansion volume of the expansion machine (202) to at least one part of the compression unit and / or at least one part of the expansion unit in order to control the temperature and / or pressure of the part by means of the same working fluid.