551results about "Feed water supply" 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 utility model relates to the technical field of steam turbines, and discloses a thermodynamic system of a coupling back pressure turbine for wide-load peak regulation, which is provided with a boiler, a back pressure turbine, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a generator and a recovery mechanism, the boiler is respectively connected with the back pressure machine, the high-pressure cylinder and the intermediate-pressure cylinder; the back pressure machine is connected with the high-pressure cylinder; the medium-pressure cylinder is connected with the low-pressure cylinder; the low-pressure cylinder is connected with the generator; the recycling mechanism is connected with the low-pressure cylinder and the boiler and used for condensing steam discharged by the low-pressure cylinder and recycling and conveying the steam to the boiler. In a high-load operation state, the thermodynamic system, the back pressure turbine and the high-pressure cylinder operate in parallel, and the boiler conveys steam to the back pressure turbine and the high-pressure cylinder. In the thermodynamic system in a low-load operation state, the back pressure machine and the high-pressure cylinder are connected in series for operation, the boiler conveys steam to the back pressure machine, and the back pressure machine conveys steam to the high-pressure cylinder. According to the utility model, the pressure of steam entering the steam turbine during low-load operation can be improved, and the feed water temperature and the operation economy can be improved.

The invention discloses a circulating fluidized bed boiler water supply optimization method and system, and belongs to the technical field of boiler energy conservation. The system mainly comprises a condensate water tank, a demineralized water tank, a slag cooler, a deoxygenization water tank, a condensate water pump, a demineralized water pump, a plate heat exchanger, a reverse osmosis membrane group, a demineralized water buffer tank and the like. The principle of'condensate water priority 'is adopted, the supply amount of condensate water is preferentially adjusted according to the liquid level of the deoxygenated water tank through the intelligent control unit, and the insufficient part is supplemented by demineralized water; the demineralized water subjected to heat exchange by the slag cooler is intelligently distributed to a demineralized water tank, a condensation water tank or a deoxygenization water tank according to the water outlet temperature; the plate heat exchanger can preheat reverse osmosis inlet water by adopting a desalting water mode or a steam mode; the demineralized water buffer tank effectively inhibits water impact. Dynamic balance and heat energy gradient utilization of steam condensate water and demineralized water are achieved, the problems of water tank overflow and energy waste are effectively solved, and the economical efficiency and stability of boiler operation are remarkably improved.

The invention discloses a double-turbine power generation device suitable for a thermal power generating unit, relates to the technical field of thermal power generation, and mainly aims to improve the power generation efficiency of the thermal power generating unit. According to the main technical scheme, a boiler system is connected with steam inlet valves of a first steam turbine power generation sub-set and a second steam turbine power generation sub-set through pipelines, and corresponding steam is conveyed to the two sub-sets by adjusting the opening degree of a valve to be matched with a load distribution target. After the two subsets do work, part of steam is fed into a steam extraction heat regeneration system to recover heat and is used for heating boiler feed water; and the residual exhaust steam enters the condenser system to be condensed into water, and the condensed water is conveyed to the steam extraction heat regeneration system to be heated to become boiler feed water, so that circulating power generation is realized.

The invention discloses a biomass power plant dead steam and flue gas waste heat integrated recovery heat supply device which comprises the following components: a biomass boiler used for combusting biomass fuel and generating high-temperature steam, and a flue gas outlet of the biomass boiler is connected to a flue gas emission reduction and waste heat recovery integrated unit; a steam inlet of the steam turbine is connected with a high-temperature steam outlet of the biomass boiler, and a steam outlet of the steam turbine is connected to a high-temperature side inlet of the steam exhaust heat exchanger and a high-temperature side inlet of the condenser through valves; the steam exhaust heat exchanger is connected with the condenser. When the device is implemented, waste steam latent heat and flue gas sensible heat / latent heat are recovered in a stepped manner, so that the comprehensive heat efficiency is remarkably improved; seasonal mode switching is achieved through an arranged intelligent control system, namely flue gas waste heat is recycled preferentially in summer, and steam exhaust heat supply is combined in winter; fuel cost is counteracted through waste heat sales income, and the income during implementation of the device is increased.

The invention relates to the technical field of high-efficiency recovery of low-temperature exhaust gas, in particular to a high-temperature cooking waste heat recovery system for white spirit brewing. The white spirit brewing high-temperature cooking waste heat recovery system comprises a cooking barrel, a compressor, an embedded plate heat exchanger, a condensate water tank and a circulating pump, a liquid inlet of the cooking barrel is communicated with one end of a water supplementing pipe, an air inlet of the compressor is communicated with a waste gas outlet of the cooking barrel, and the compressor is used for compressing steam to obtain high-temperature and high-pressure steam. A steam inlet of the embedded plate heat exchanger is communicated with an air outlet of the compressor, and a steam outlet of the embedded plate heat exchanger is communicated with a steam inlet of the cooking barrel through a steam conveying pipe. By adopting the arrangement mode, waste heat steam is utilized twice to recover heat, high-efficiency energy utilization can be realized, energy consumption and carbon emission are reduced, and meanwhile, the cooking efficiency and the grain quality are improved.

The boiler softened water tank comprises a softened water tank body and a support, the bottom of the softened water tank body is fixedly connected with the support, the left side of the softened water tank body is fixedly connected with a liquid level sight glass, the surface of an emptying pipe is fixedly connected with an emptying valve, the bottom of the right side of the softened water tank body is communicated with a boiler pipe, and the bottom of the boiler pipe is communicated with a vacuum suppressor. The utility model relates to the technical field of boiler softened water tanks, a small liquid level control tank is installed outside the tank, a vacuum suppressor is installed at the top of the liquid level control tank and used for exhausting air when water enters, a floating ball valve is installed in the tank and connected with the softened water tank through a U-shaped bend, and the soft water tank is connected with the vacuum suppressor. The normal temperature is kept, the service life of the sealing piece is prolonged, the sealing piece can be maintained in time without shutdown when damaged and is not influenced by use and hot water in the tank, and the problem that the sealing piece of the floating ball valve is used at high temperature for a long time and is easy to age to cause water leakage is solved.

The invention provides a black water waste heat recovery method and application, and belongs to the technical field of chemical engineering, the method is as follows: a black water pipeline from a gasification furnace is sequentially flashed through a high-pressure flash tank, a low-pressure flash tank and a vacuum flash tank and finally reaches a precipitation tank; a process pipeline is additionally arranged on the upstream of a black water pipeline adjusting valve at the bottom of a high-pressure flash tank, the process pipeline is connected to a shell pass of a high-pressure carbon dioxide heat exchanger in parallel and exchanges heat with a tube pass of the high-pressure carbon dioxide heat exchanger, the temperature is increased after heat exchange, and the process pipeline is sent to all users for use; after black water discharged from the high-pressure flash tank is subjected to heat exchange through the high-pressure CO2 heat exchanger, the temperature is reduced, the flow to the low-pressure flash tank is controlled by adjusting a downstream black water flow adjusting valve, the thermal load of the low-pressure flash tank is indirectly reduced, the flow to the vacuum flash tank is controlled by the low-pressure flash tank through a downstream black water adjusting valve, and the thermal load of the vacuum flash tank is reduced. And the vacuum pump of the vacuum flash is reduced or stopped according to the vacuum flash pressure condition, so that energy is saved. High-flash black water waste heat replaces low-pressure steam, and the true flash load is indirectly reduced.

The invention provides a heat pump coupling fused salt energy storage system and method suitable for peak regulation of a thermal power generating unit, a thermal power generating unit comprises a boiler and a multi-stage steam turbine assembly, the output end of the boiler is communicated with the multi-stage steam turbine assembly, and a heat storage subsystem comprises a high / low-temperature fused salt storage tank and a first / second heat exchanger assembly. The output end of the boiler further communicates with a steam-water channel inlet of the second heat exchanger assembly, an outlet of the multi-stage steam turbine assembly communicates with a water supply pipeline, and the water supply pipeline communicates with the input end of the boiler and a steam-water channel inlet of the first heat exchanger assembly. In the heat storage period, part of high-temperature steam output by the boiler is conveyed to the multi-stage steam turbine assembly, and the remaining high-temperature steam is distributed to the second heat exchanger assembly to be used for heating the low-temperature fused salt. In the heat release period, steam output by the multi-stage steam turbine assembly is condensed to form feed water, the feed water is transmitted to the first heat exchanger assembly, high-temperature steam is formed and flows back to the multi-stage steam turbine assembly, and the multi-stage steam turbine assembly is driven to do work to generate power.

The invention discloses a novel gasification furnace black water high-grade heat energy recovery process containing liquid-solid separation and scale inhibition treatment. Aiming at the defects of heat energy grade reduction, equipment abrasion and low-temperature heat discharge caused by a traditional flash evaporation process, black water is pretreated through a liquid-solid separator (S-1800) and a scale inhibitor (T-1800), a multi-stage countercurrent heat exchange technology is combined, a flash evaporation step is omitted, and high-grade heat energy of the black water is used for heating process water and process condensate. The temperature of process condensate is increased to 190 DEG C or above from about 170 DEG C in the traditional process, the temperature of process water (grey water) is increased to 190 DEG C or above from about 140 DEG C in the traditional process, the temperature of coal gas discharged from a washing tower is increased to about 206 DEG C from about 192 DEG C, the water-gas molar ratio in the coal gas is increased to about 0.94 from about 0.58, and the amount of water vapor in saturated coal gas discharged from the tower is increased by 63% or above. According to the process, high-pressure steam does not need to be supplemented in a conversion working section, for example, a synthetic ammonia device with annual output of 180000 tons, 4.2 MPaA and 400 DEG C high-pressure superheated steam is saved and increased by 20.870 thousand tons per year, the energy-saving benefit reaches 31300000 yuan per year, and the energy-saving benefit is in direct proportion to the production scale of the device.

The utility model relates to the technical field of heat recovery, and discloses a dead steam recovery device which comprises a bottom plate, one side of the top end of the bottom plate is fixedly connected with a deaerator through a vertical plate, the other side of the top end of the bottom plate is provided with a collecting mechanism, the collecting mechanism is provided with a heat exchange mechanism, and the heat exchange mechanism is provided with a rotating mechanism. The heat exchange mechanism comprises a heat exchange box, a water inlet pipe and a water outlet pipe are symmetrically and fixedly connected to the outer wall of the heat exchange box, a heat exchange pipe is rotationally connected to the heat exchange box and is spirally arranged, and the two ends of the heat exchange pipe are fixedly connected with a first connecting box and a second connecting box respectively; through all structures in the heat exchange mechanism, the effects that steam is fully cooled and condensed into water, and the cooling efficiency is improved are achieved, and the problems that a cooling path in a traditional dead steam recovery device is short, so that the steam cannot be fully cooled, and the cooling efficiency is low are solved.

The application provides a steam condensate waste heat recycling device, and relates to the field of heat energy recovery.The steam condensate waste heat recycling device comprises a base, a heat preservation cylinder arranged on the base, and a synchronous adjusting mechanism arranged on the heat preservation cylinder.The steam condensate waste heat recycling device can conveniently collect condensate water into a required device, and the high-temperature condensate water can not lose a large amount of heat through a pipeline and a surface of equipment during a transmission process, so that heat energy is not wasted.The synchronous adjusting mechanism drives a conveying pump to quickly transfer the condensate water in the heat preservation cylinder to a required place, so that the condensate water recovery efficiency is improved.The synchronous adjusting mechanism solves the problem of waste of condensate water waste heat in the prior art.The synchronous adjusting mechanism solves the problem of equipment damage caused by heat shock in the prior art.The synchronous adjusting mechanism solves the problem of increased thermal resistance caused by scale accumulation in the prior art.

The invention discloses a rapid peak and frequency regulation system and method for a coal-fired unit with a regenerative system coupled with high-temperature working medium for heat storage, and relates to the technical field of conventional heating power and electricity technologies and energy storage, and the rapid peak and frequency regulation system comprises a coal-fired unit thermodynamic cycle system and a high-temperature working medium heat storage system, the high-temperature working medium heat storage system is deeply coupled with a thermodynamic cycle heat regeneration system of the coal-fired unit, and rapid combined peak regulation and frequency modulation of the unit are achieved by reducing the steam extraction amount of each stage of a steam turbine and cooperating with energy supply of the high-temperature working medium heat storage system. Firstly, when the unit needs to rapidly increase the load, rapid increase of the power generation output of the unit is achieved by reducing the steam extraction amount of each stage of a steam turbine, and meanwhile, high-temperature and high-pressure saturated water stored in a high-temperature working medium heat storage tank generates a certain amount of saturated steam through pressure reduction to replace steam extraction of each stage of the steam turbine to heat boiler feed water in a regenerative system; therefore, the water supply temperature of the boiler is kept unchanged or increased, and the variable load response capability of the coal-fired unit is quickly improved.

The invention discloses a steam utilization device for steam turbine overhaul, and belongs to the technical field of steam utilization, the steam utilization device comprises an equipment base, a heat exchange box body is fixedly mounted at the top of the equipment base, the top of the heat exchange box body is fixedly connected with an evaporation boiler through a heat conduction structure, and the evaporation boiler and the heat exchange box body are in heat conduction fit; an energy conversion shell is fixedly installed at the position, close to the heat exchange box body, of the top of the equipment base, a first-stage condenser is fixedly installed at the position, close to the energy conversion shell, of the top of the equipment base, and the inlet end of the first-stage condenser communicates with the outlet end of the energy conversion shell in a sealed mode through a pipeline. High-temperature and high-pressure steam firstly enters the heat exchange rectangular pipe to release heat energy, condensate water containing impurities is evaporated and purified through the discharged high-temperature steam, thorough separation of the impurities and a water body is achieved, and the situation that steam water containing the impurities enters a steam turbine again to pollute the steam turbine is fundamentally avoided.

The invention provides a peak regulation power generation system and method coupling fused salt heat storage and steam supplementing of a steam turbine, and relates to the technical field of heat energy engineering.The system comprises a fused salt heat storage and heat exchange system comprising a low-temperature fused salt tank, a fused salt heater, a high-temperature fused salt tank and a fused salt steam-water heat exchanger; comprising a gas-fired boiler, a steam turbine and a water supply system; the fused salt heater is used for receiving low-temperature fused salt fed by the low-temperature fused salt tank through the low-temperature fused salt pump in the electricity utilization trough period and heating the low-temperature fused salt through heat provided by the gas-fired boiler. The fused salt steam-water heat exchanger is used for receiving high-temperature fused salt fed by the high-temperature fused salt tank through the high-temperature fused salt pump during the peak period of electricity consumption and transferring heat energy of the high-temperature fused salt to high-pressure feed water from the water supply system to generate superheated steam; and one part of the superheated steam is fed into a main steam main pipe connected with the gas-fired boiler. The power generation efficiency of the steam turbine can be effectively improved, and efficient utilization of heat energy and flexible adjustment of power grid loads are achieved.

The invention belongs to the technical field of thermal power generation, and particularly relates to a feed pump recirculation system for preventing cavitation of a minimum flow valve of a thermal power generating unit. The feed pump recirculation system comprises a condenser, a condensate pump, a low-pressure heat regenerator set, a deaerator, a feed pump and a high-pressure heat regenerator set which are sequentially connected, each stage of extraction steam of an external steam turbine is connected with steam inlets of the high-pressure heat regenerator set, the deaerator and the low-pressure heat regenerator set, and a condensate outlet of the high-pressure heat regenerator set is connected with a condensate inlet of the deaerator. A condensed water outlet of the low-pressure heat regenerator set is connected with a condensed water inlet of the condenser, the water feeding pump sequentially passes through the minimum flow valve, the heat exchanger and the first stop valve and is connected with the deaerator, and external cooling water enters the heat exchanger through the third stop valve for heat exchange and then is discharged. The return water temperature of the feed pump recirculation system is reduced through the heat exchanger, the saturated steam pressure corresponding to the return water is reduced, the cavitation risk of the minimum flow valve is reduced, and the service condition of the minimum flow valve can be obviously improved.

The application relates to a combined heat and power system, which comprises a boiler, a generator unit, a molten salt heat storage subsystem and a steam heat storage subsystem; the generator unit comprises a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder; the molten salt heat storage subsystem comprises a cold salt tank, a hot salt tank, a heat storage heat exchanger and a heat supply heat exchanger, the heat storage heat exchanger is provided with a first low-temperature medium flow channel and a first high-temperature medium flow channel, the heat supply heat exchanger is provided with a second low-temperature medium flow channel and a second high-temperature medium flow channel; the first high-temperature medium flow channel is connected with a steam extraction end of the medium-pressure cylinder; one end of the second low-temperature medium flow channel is connected with a water supply end, and the other end is connected with a heat user; the steam heat storage subsystem comprises a steam heat storage tank, an input end of the steam heat storage tank is connected with the steam extraction end of the medium-pressure cylinder, an output end is connected with a steam inlet end of the low-pressure cylinder, and the steam heat storage tank has the advantages of being able to meet different scheduling requirements and increasing the flexibility of scheduling.

The application discloses a flue gas heat energy and condensate water utilization system, which comprises a boiler, a flue gas cooling device, and a deoxygenated water tank. The flue gas generated by the boiler combustion enters the flue gas cooling device through a first flue for cooling. The flue gas exchanges heat with the water in the condensate water tank, the water in the condensate water tank is heated, the flue gas is cooled, and the cooled flue gas is discharged through a second flue. The condensate water formed in the flue gas cooling process falls into the condensate water tank. The water in the condensate water tank is deoxygenated by the deoxygenated water tank and then flows back to the boiler. The flue gas heat energy generated by the boiler combustion is utilized, the slightly acidic condensate water generated by the flue gas is mixed with the slightly alkaline softened water and the boiler water, the acidic condensate water and the alkaline softened water and the boiler water are subjected to acid-base neutralization reaction, the flue gas is used to heat the condensate water, and the like, so that the flue gas condensate water does not contain acidic gas, and thus the flue gas condensate water is slightly alkaline water suitable for the utilization of the boiler.

This invention provides a boiler system that can effectively utilize the heat contained in ammonia decomposition gas. Furthermore, it provides a boiler system that can maintain the temperature of the ammonia decomposition gas at the boiler inlet within a predetermined temperature range. [Solution] The boiler system comprises an ammonia decomposition device that decomposes ammonia to produce ammonia decomposition gas containing hydrogen and nitrogen, a boiler that burns the ammonia decomposition gas as fuel, an ammonia decomposition gas supply line that supplies the ammonia decomposition gas from the ammonia decomposition device to the boiler, a feedwater line that supplies feedwater to the boiler, and a heat exchanger that heats the feedwater by exchanging heat between the ammonia decomposition gas and the feedwater.

The present invention discloses a thermal energy utilization system, method and use for destroying waste propellant, including a waste propellant combustion system for converting the chemical energy of waste propellant into thermal energy; a steam-water system connected to the waste propellant combustion system for transferring the thermal energy to a power generation system; a power generation system connected to the steam-water system for converting the thermal energy into electrical energy and forming a cycle by being connected to the steam-water system; and a thermal energy utilization system connected to the power generation system for converting the thermal energy and forming a cycle by being connected to the steam-water system. The present invention can utilize the large amount of thermal energy released during the destruction and combustion process of waste propellant, avoiding waste of resources.

The utility model relates to the technical field of high-pressure sterilization, and discloses a high-pressure sterilization cooling device which comprises a barrel body, a cover plate is clamped at the top of the barrel body, a sterilization assembly is installed on the side wall of the barrel body and used for high-temperature and high-pressure sterilization, and a cooling assembly is installed at the bottom of the cover plate and used for cooling an inner cavity of the barrel body. The sterilization assembly comprises a placement plate, the placement plate is fixedly mounted on the inner wall of the barrel body, and air holes are formed in the surface of the placement plate; according to the high-pressure sterilizing and cooling device, raw materials are placed on the surface of the placing plate, the cover plate is used for sealing the barrel body, the steam generator is driven to charge steam into the inner cavity of the barrel body through the air outlet pipe, the air holes are formed in the surface of the placing plate, then the steam can flow upwards through the air holes, the raw materials are promoted to move in the process, and meanwhile a threaded column drives a rotating plate to rotate; the raw materials are stirred, so that the raw materials can be in uniform contact with steam, the raw materials are subjected to high-pressure and high-temperature sterilization, and the high-temperature sterilization time is shortened.

The embodiment of the invention provides a system, method and device for improving heat supply energy of a steam turbine, and the system comprises a heat supply steam extraction pipeline with the inlet end connected to a medium-low pressure communicating pipe and the outlet end connected to an external heat supply network; the hydraulic control butterfly valve is arranged on the medium-low pressure communicating pipe, is positioned at the downstream of the inlet of the heat supply steam extraction pipeline, and is used for cutting off or conducting steam flowing to the low-pressure cylinder; the inlet end of the cooling steam bypass is connected to the medium-low pressure communicating pipe and located on the upstream of the hydraulic control butterfly valve, and the outlet end of the cooling steam bypass is connected to a steam inlet of the low-pressure cylinder and used for introducing cooling steam into the low-pressure cylinder when the hydraulic control butterfly valve is cut off; the Roots-water ring vacuum pump set is connected to a steam exhaust port of the low-pressure cylinder and used for establishing and maintaining a high-vacuum environment of the low-pressure cylinder; and the drainage unit is connected to the low point of the heat supply and steam extraction pipeline and used for discharging condensed water in the heat supply and steam extraction pipeline. The heat supply and steam extraction capacity of the unit is remarkably improved, and meanwhile safe cooling of the low-pressure cylinder and reliable operation of the system are guaranteed.

The present application relates to water vapor application technical field, disclose a kind of water vapor flow regulating system, its technical scheme main point is including heating part, the heating part is configured as heating to be heated object, further including reflux tank, the reflux tank is configured as the water vapor and liquid separated by the heating part discharge;And heating tank part, the heating tank part is configured as obtaining the liquid in the reflux tank is heated and provides water vapor to the heating part;And the present application sets a set of steam heating pipeline system, compares according to actual heating demand, real-time control adjusts the temperature and dosage of heating part steam, and flow meter, temperature sensor, differential pressure sensor and pressure sensor on each pipe are calculated.

The utility model discloses a low-temperature coal economizer system capable of being flexibly switched. The low-temperature coal economizer system capable of being flexibly switched comprises a condensation water pipeline, a low-temperature coal economizer high-temperature section, a low-temperature coal economizer low-temperature section and an air heater. The water inlet end and the water outlet end of the condensed water pipeline are connected with a water inlet main pipe and a water return main pipe correspondingly, and inlets of the low-temperature economizer high-temperature section and the low-temperature economizer low-temperature section are connected with inlet branch pipes which are arranged in parallel and provided with the inlet ends connected with the water inlet main pipe. Outlets of the low-temperature economizer high-temperature section and the low-temperature economizer low-temperature section are connected with outlet branch pipes which are arranged in parallel, and the outlet ends of the outlet branch pipes are connected with the water return main pipe. A series pipeline is connected between the outlet end of the low-temperature section of the low-temperature economizer and the inlet end of the high-temperature section of the low-temperature economizer; outlets of the low-temperature economizer high-temperature section and the low-temperature economizer low-temperature section are connected with air heater water inlet branch pipes which are connected with a water inlet pipeline of the air heater after being connected in parallel, and an air heater water outlet pipe is connected between the water outlet end of the air heater and the water return main pipe.

The invention relates to the technical field of energy recovery and power engineering, and discloses a cantilever type saturated steam turbine and a using method thereof.The cantilever type saturated steam turbine comprises a cantilever type turbine unit, the cantilever type turbine unit comprises an installation outer shell and a turbine wheel disc assembly installed in the installation outer shell, and the turbine wheel disc assembly is connected with a rotor main shaft; the turbine wheel disc assembly comprises a turbine impeller and a turbine blade piece installed on the turbine impeller. The water catching assembly comprises a water collecting ring and a water draining cavity formed in one side of the water collecting ring, and a water collecting groove is formed in the side edge of the water collecting ring; a mounting bearing is mounted on one side of the cantilever type turbine unit, a gear box is connected to one side of the cantilever type turbine unit, and a condenser is connected to the cantilever type turbine unit; the problems that in the prior art, the structure is complex, cost is high, blade erosion is serious, efficiency improvement is limited, meanwhile, the equipment size is large, starting is complex, the response speed is low, and the waste heat recovery temperature lower limit is low are solved.

The invention relates to the field of coal electricity, in particular to a steam extraction transformation and heat supply system of a secondary reheat unit. The existing secondary reheating unit cannot meet the requirements of heat consumption and deep peak regulation of a power plant, is difficult to transform and is easy to jump. The invention provides a secondary reheat unit steam extraction transformation and heat supply system which comprises a boiler, a heat supply part, a cylinder part with an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder and a low pressure cylinder, a steam extraction unit composed of an ultrahigh pressure side and steam part, a high pressure side and steam part and a low pressure side and steam part, and a condensation water and water supply part with a condenser, a condensation pump, a deaerator and an electric pump. The boiler is connected with all the parts through pipelines, when a unit is started and parameters of the ultrahigh pressure cylinder, the high pressure cylinder and the intermediate pressure cylinder are unqualified, steam sent to the pressure cylinders is sent to the heat supply part through the steam extraction unit, and water of the condenser is sent to the boiler through the condensate pump, the deaerator and the electric pump. The steam supply demand change and heat supply of the unit in the deep peak regulation period can be met, stable operation is achieved, and trip is prevented.

The utility model discloses an air-steam heater with a dead steam recovery device for a boiler, which comprises a heater cylinder, an air inlet and an air outlet are respectively arranged at two ends of the heater cylinder, and an input end of a heat exchange tube bundle in the heater cylinder is connected with a high-temperature and high-pressure steam input tube. A heat exchange discharge pipe at the output end of the heat exchange pipe bundle is connected with a dead steam conveying pipe and a condensate water conveying pipe, the dead steam conveying pipe is connected with a steam-water recovery device, and the steam-water recovery device comprises a condensation mechanism and a steam-water recovery device output pipe; the condensate water conveying pipe is connected to a condensate water recycling barrel, a recycling barrel condensate water output pipe is arranged on the condensate water recycling barrel, the recycling barrel condensate water output pipe is connected with a condensate water conveying pump, and the condensate water conveying pump is connected to a deaerator through a delivery pipe; an output pipe of the steam-water recycling device is connected to the condensate water recycling barrel. The waste steam and condensate water recycling device has the advantages that the waste steam and the condensate water are recycled, so that water resources can be greatly saved, and the operation cost of the boiler is effectively reduced.

The present application relates to the technical field of energy storage, and relates to an energy storage system based on thermochemical energy storage and Rankine cycle and an operation method. The energy storage system comprises a storage device, an energy storage device, an energy release device and a power generation device. The energy storage device comprises a calcium carbonate rotary calcining kiln, a first heat exchanger network and an electric heater, and the structural components are sequentially connected. The electric heater is used to convert excess electricity into heat energy, the calcium carbonate decomposition reaction is carried out in the calcium carbonate rotary calcining kiln, the heat energy is converted into chemical energy stored in calcium oxide, the energy release device is used to convert the chemical energy stored in calcium oxide into heat energy, the heat energy is converted into electricity by the power generation device, and the electricity demand of the terminal user is met. The energy storage system provided by the present application can realize the conversion, transmission and storage of different energies, has high energy conversion efficiency, can effectively reduce the coal consumption in the energy conversion process, and meets the energy saving and carbon reduction and flexibility reconstruction requirements of coal-fired power plants.

The utility model relates to a multi-component feed gas conversion hydrogen production device discharged steam condensate recovery device which comprises a water collection tank, the side wall of the water collection tank is fixedly connected with a steam condensate input main pipeline, one end of the steam condensate input main pipeline is connected with a first steam input pipeline, and a first steam trap is installed on the first steam input pipeline. A water collecting tank inlet valve is mounted on the steam condensate input main pipeline; the side wall of the water collecting tank is fixedly connected with a steam condensate output pipeline, one end of the steam condensate output pipeline is connected with a mechanical power pump, the side wall of the mechanical power pump is connected with a first water outlet pipe, one end of the first water outlet pipe is connected with a steam condensate water cooler, the steam condensate water cooler is connected with a second water outlet pipe, and one end of the second water outlet pipe is connected with a deaerator. The steam condensate recycling device has the advantages of being more reasonable in structural design, low in machining and manufacturing cost, easy to operate, safe, reliable, capable of prolonging the service life of a pipeline, capable of recycling steam condensate, energy-saving, environment-friendly and capable of preventing environmental pollution.

The present application relates to a kind of thermal power generating unit control technical field, is a kind of thermal power generating unit condensate pump automatic control system energy-saving optimization method and device, the former includes determining by deaerator water regulating valve control condensate pump outlet header pressure, then judge deaerator water regulating valve whether full open;In response to no, reduce condensate pump outlet header pressure set value, until deaerator water regulating valve full open;In response to yes, judge current deaerator water regulating valve opening degree whether with condensate pump energy-saving operation match;In response to no, increase condensate pump outlet header pressure set value, until current deaerator water regulating valve opening degree with condensate pump energy-saving operation match.The present application is by lifting the opening degree of deaerator water regulating valve, reduce the throttling loss caused by deaerator water regulating valve opening degree low, simultaneously make the throttling loss of deaerator water regulating valve minimum and condensate pump outlet header pressure maximum, in reducing energy loss while guaranteeing the economy of condensate pump operation.