145 results about "Regenerative system" patented technology

The invention relates to the technical field of generator set mixed bed operation monitoring, and discloses a fine processing mixed bed failure situation situation sensing system and method, the sensing system comprises a sampling tube, a sampling electric valve, a sampling isolation valve, a cation resin column, a conductivity meter, a mixed bed failure monitoring device and a resin regeneration system; the sampling pipe extends into the central axis of the fine treatment mixed bed; a plurality of sampling pipes are arranged along the height direction of the fine treatment mixed bed, are sequentially connected with a sampling electric valve and a sampling isolation valve, and then are connected in series to one end of a cation resin column; the other end of the cation resin column is connected with the conductivity meter; the mixed bed failure monitoring device is electrically connected with the sampling electric valve, the sampling isolation valve and the conductivity meter; and the resin regeneration system is connected with a water inlet pipeline and a water outlet pipeline of the fine treatment mixed bed through a fine treatment mixed bed resin inlet valve and a fine treatment mixed bed resin outlet valve respectively. Situation awareness of mixed bed failure is achieved by establishing a layered monitoring system, and long-term stability of water quality of a water vapor system of a power plant is guaranteed.

The invention relates to the technical field of generator set mixed bed operation monitoring, and discloses an operation health degree monitoring method and system based on fine treatment mixed bed resin tracking, the monitoring system comprises a sampling tube, a sampling electric valve, a sampling isolation valve, a cation resin column, a conductivity meter, a mixed bed failure monitoring device and a resin regeneration system; the sampling pipe extends into the central axis of the fine treatment mixed bed; a plurality of sampling pipes are arranged along the height direction of the fine treatment mixed bed, are sequentially connected with a sampling electric valve and a sampling isolation valve, and then are connected in series to one end of a cation resin column; the other end of the cation resin column is connected with the conductivity meter; the mixed bed failure monitoring device is electrically connected with the sampling electric valve, the sampling isolation valve and the conductivity meter; and the resin regeneration system is connected with a water inlet pipeline and a water outlet pipeline of the fine treatment mixed bed through a fine treatment mixed bed resin inlet valve and a fine treatment mixed bed resin outlet valve respectively. Health degree monitoring is realized by establishing a layered monitoring system, and long-term stability of water quality of a power plant system is guaranteed.

The invention discloses a heat adsorption type drying machine with a three-tower structure and an adsorption regeneration technology of the heat adsorption type drying machine, and belongs to the technical field of adsorption type drying machines. The dryer comprises three adsorption towers, a regeneration system and a PLC control system, adsorbents are arranged in the adsorption towers, and the regeneration system comprises an electric heater and an air blower which are connected through a steel pipe. According to the dryer, the purpose of saving energy is achieved through the peak-valley-flat electricity price, the adsorption tower A, the adsorption tower B and the adsorption tower C conduct adsorption in the daytime, the regeneration and cold blowing process is conducted when the valley electricity price is utilized, and therefore the operation cost of the dryer is reduced; the adsorption regeneration process comprises two working modes: in the first working mode, adsorption is carried out for 12 hours in a tower A, adsorption is carried out for 12 hours in a tower B, and adsorption is carried out alternately in a tower C; and a second working mode: one tower performs adsorption work, one tower performs heating regeneration, and the other tower can perform cold blowing. The adsorption dryer with the three-tower structure can meet the requirement of a customer for reasonably selecting an off-peak electricity period for heating regeneration, so that the operation electric energy of equipment is greatly reduced.

The invention discloses an acid regeneration system, a control method thereof and a medium. The acid regeneration system comprises a man-machine operation device, a controller and an acid regeneration unit, and the controller is used for receiving a control instruction sent by the man-machine operation device and sending an execution instruction to the acid regeneration unit according to the control instruction; the execution instruction comprises a steam condensate water amount execution instruction, and the steam condensate water conveying device is used for controlling the water amount of conveyed steam condensate water based on the steam condensate water amount execution instruction; the acid regeneration unit comprises a desilicication unit and a roasting unit; the desiliconization unit is used for desiliconizing the waste acid liquid to obtain purified iron liquid; the desiliconization unit comprises a purified iron liquid buffer tank for storing purified iron liquid and a steam condensate water conveying device for conveying steam condensate water to the purified iron liquid buffer tank, and the steam condensate water is used for diluting the purified iron liquid; and the roasting unit is used for roasting the diluted purified iron liquid to obtain iron oxide powder and regenerated acid. The iron oxide powder obtained by the system is good in quality.

Provided in the present invention are a primary frequency regulation dynamic simulation method and apparatus based on a thermal power condensate water throttling strategy, which are used for analyzing the dynamic characteristics of a unit when a power plant executes a primary frequency regulation instruction by means of a condensate water throttling strategy after a power disturbance occurs in a power grid. The dynamic characteristics mainly comprise the characteristics of a steam turbine speed governor system, the characteristics of a variable-frequency condensate pump system, the dynamic heat exchange characteristics of a low-pressure heater and extraction steam, the flow characteristics of an extraction steam pipeline, and the output characteristics of a steam turbine body. A moving boundary method is mainly applied to a heat exchange process between condensate water (a cold fluid) and shell-side extraction steam (a hot fluid) in a low-pressure heater. The heat exchange process between the cold and hot fluids can be divided into a superheated section, a phase change section and a subcooled section on the basis of the aggregation state of the extraction steam. When the moving boundary method is applied to a steam turbine regenerative system, the dynamic variation laws of extraction steam temperature and pressure can be more accurately obtained, and the extraction steam pressure on a low-pressure heater side is a key factor in determining the extraction steam flow rate on a low-pressure cylinder side, and is also critical in determining the instantaneous power increment of a steam turbine. Moving boundary method-based frequency regulation dynamic simulation for thermal power condensate water throttling takes into account relatively comprehensive actual process factors, and only one-dimensional modeling along an axial main flow direction is taken into account, thus combining the advantages of fast and accurate simulation. A fast and accurate simulation method is a prerequisite for implementing power grid frequency security analysis. By mastering the dynamic process of power plant load response from the moment a frequency deviation exceeds a dead band to the moment same returns to the dead band, a foundation can be provided for the primary frequency regulation control of power plants and the frequency security analysis of power grids.

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 porous medium combustor unit regeneration system and a regeneration method thereof, and relates to the technical field of combustors, the porous medium combustor unit regeneration system comprises a porous medium combustor unit and a premixed gas pipeline connected with the porous medium combustor unit, the burner further comprises a waste gas pipeline, a premixing pipeline stop valve, a matching buckle cover and a compressed air pipeline branch pipe, the waste gas pipeline communicates with the porous medium burner unit, the waste gas pipeline stop valve is arranged on the waste gas pipeline, the premixing pipeline stop valve is arranged on the premixing gas pipeline, and the matching buckle cover is arranged on the compressed air pipeline branch pipe. The matching buckle cover is detachably buckled on the porous medium burner unit to form a closed space, at least one compressed air connector is arranged on the matching buckle cover, and the compressed air pipeline branch pipe is communicated with the compressed air connector and provided with a branch pipe cut-off valve. The integral online regeneration of the porous medium combustion unit can be realized, the operation is simple, the risk of disassembly and damage is avoided, and the service life of the combustor is effectively prolonged.

The invention provides a multivariable fusion-based low-pressure cylinder admission flow online soft measurement method, belongs to the technical field of steam turbine operation control, and can at least partially solve the problems of insufficient measurement precision in a small flow area, poor stability under system disturbance and limited adaptability of a single model in the prior art. The method comprises the steps that the steam inlet pressure, temperature, steam exhaust pressure and blast temperature of a low-pressure cylinder and relevant parameters of a regenerative system are collected; respectively calculating a physical estimation amount, a calibration correction amount and a heat regeneration balance amount; the weight coefficient is adaptively set according to the operation working condition, the three types of information sources are fused, and the real-time measurement value of the steam inlet flow of the low-pressure cylinder is obtained.The method has the beneficial effects that the accuracy and stability of the measurement result can be kept under the multiple working conditions of large flow, small flow, system disturbance and the like, and good real-time performance and engineering adaptability are achieved. The method can be widely applied to scenes of steam turbine operation monitoring, performance analysis and protection strategy optimization.

The invention relates to the technical field of coal-fired units, and discloses an electrothermal coupling regenerative system for a thermal power unit. The first high-pressure heater and the second high-pressure heater are used for supplying water; the power supply is used for driving the electric heater to perform heating control on feed water in the first high-pressure heater and the second high-pressure heater; the steam electric shut-off valve is used for controlling opening and closing of the valve; the control device is electrically connected to the power source and the electric heater and used for managing and controlling the power source and the electric heater, new energy surplus electricity or off-peak electricity is used for heating feedwater of the heat regeneration system, the feedwater temperature is increased, the fire coal amount is reduced, the transformation investment and the safety risk are greatly reduced, and the energy consumption is reduced. The coupling with the coal power unit can reduce the minimum power generation load of the unit and improve the variable load rate.

The application discloses a power plant start-up stage feedwater heating energy-saving operation method, which is applied to a self-adaptive feedwater regenerative system in a thermal power plant; the self-adaptive feedwater regenerative system comprises a high-pressure heater group and a bypass steam supply branch; the bypass steam supply branch is respectively communicated with a condenser in the thermal power plant and a steam side of at least one high-pressure heater in the high-pressure heater group; during the start-up stage of the thermal power plant, the pressure value change of main steam is acquired and monitored in real time, so as to judge whether the pressure value is in a preset operation range; if yes, the bypass steam supply branch is opened, part of the main steam is introduced into the steam side of the at least one high-pressure heater in the high-pressure heater group, the feedwater flowing through the water side of the high-pressure heater is heated, and meanwhile, the remaining part of the main steam is introduced into the condenser; after the thermal power plant meets preset normal operation conditions, the bypass steam supply branch is closed, and a normal feedwater heating mode is switched synchronously.

To provide a zinc fuel which can be manufactured by regeneration of zinc oxide, is easy to handle and store, and is easy to secure contact with a current collector, and to provide its manufacturing method.SOLUTION: The zinc fuel 2 has a support 3 whose surface is formed by a current collector 5, and a negative electrode active material layer 4 covering the surface of the support 3. The negative electrode active material layer 4 is a generated zinc layer formed by dendritic crystals of zinc or a zinc alloy deposited on the surface of the support 3, in which some of the dendritic crystals are crushed and densified, and voids are provided between the crushed dendritic crystals. For example, a long sheet 6 is used as the support 3, and the sheet 6 is immersed in the zinc deposition bath 21 to deposit dendritic crystals on the surface by electrolysis of zinc oxide. The sheet 6 is drawn out from the zinc deposition tank 21, and after a negative electrode active material layer 4 is formed by densifying the generated zinc layer by a press mechanism 23, it is wound in a roll shape to manufacture the zinc fuel 2.SELECTED DRAWING: Figure 4

The invention discloses a coal-fired power plant quick response system and method based on thermochemical energy storage, which are applied to the field of power grid energy storage and comprise a coal-fired power generation unit, a carbon capture unit, an energy storage unit and a power generation unit. The coal-fired power generation unit comprises a boiler, a steam turbine, a power generator and a regenerative system; the carbon capture unit comprises an absorption tower, a separation tower and a reboiler; the energy storage unit comprises a dry air pump, an air heater and a thermochemical energy storage reactor. The medium-pressure cylinder is connected with the air heater through steam extraction, the low-pressure cylinder is connected with the inlet of the reactor through steam extraction, and steam at the outlet of the reactor is supplied to the reboiler and the organic Rankine cycle power generation unit. Waste heat of a cooler of the carbon capture unit is recycled and used for preheating organic working media, and energy gradient utilization and rapid peak regulation are achieved. According to the invention, an energy storage-energy release bidirectional operation mechanism is constructed through the thermochemical energy storage unit, the problems of output reduction and slow response during peak regulation of the carbon capture power plant are solved, more steam is used for power generation, the peak regulation range is widened, and the response rate is improved.

The utility model discloses an efficient waste gas treatment vertical tank device based on resin particles, which comprises a stainless steel vertical tank, an exhaust pipe is fixedly mounted at the top of the stainless steel vertical tank, a waste gas pipe is fixedly mounted on the left side of the stainless steel vertical tank, and three mounting rings are fixedly mounted in the stainless steel vertical tank. The three installation rings are located between an exhaust pipe and a waste gas pipe, annular flow guide grid plates are fixedly installed on the three installation rings through bolts, recovery hoppers are inserted into the two annular flow guide grid plates at the bottom in a penetrating mode, a condensation recovery pipe is fixedly installed at the bottom of the stainless steel vertical tank, and a high-temperature steam pipe is arranged on the right side of the stainless steel vertical tank. According to the utility model, harmful substances are adsorbed by the resin adsorption layer, and after multi-layer adsorption treatment, waste gas reaches the standard and is exhausted through the exhaust pipe, so that a resin adsorption filtration and regeneration system is formed, peculiar smell, harmful substances and organic matters in the waste gas can be efficiently adsorbed and removed, and the treatment effect of the waste gas is ensured.

This invention provides a catalyst regeneration energy recovery heat pump system, belonging to the field of heat pump technology. An external air channel connects to a coke-regeneration system via a heat source regenerator. The coke-regeneration system has a flue gas channel connecting to the outside via a high-temperature heat exchanger and a heat source regenerator. An external gas channel connects to a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature steam generator, and a low-temperature steam generator. A heater connects to the low-temperature steam generator via a booster pump. The heater connects to an evaporator via a throttling valve. The evaporator connects to the low-pressure port of an ejector. The low-temperature steam generator connects to the high-pressure port of an ejector. The ejector connects to the heater via a second compressor. An external liquid medium pipeline connects to the high-pressure port of a second ejector via a second booster pump and a high-temperature steam generator. An external heated medium channel connects to the low-pressure port of the second ejector via the heater. The second ejector connects to the outside. The evaporator also has a low-temperature heat medium channel connecting to the outside, forming a catalyst regeneration energy recovery heat pump system.

The invention provides a steam heat storage system of a coupling coal power unit and a capacity determination method, and belongs to the technical field of coupling heat storage systems of coal power units. The coal power unit in the steam heat storage system coupled with the coal power unit comprises a boiler and a steam turbine unit; the coal power unit further comprises a regenerative system. The inlet end of the regenerative system is connected with the outlet end of the turboset, and the outlet end of the regenerative system is connected with the inlet end of the boiler. A steam-water mixing heater, a low-temperature water storage tank and a high-temperature water storage tank are arranged in the steam heat storage system of the coupling coal power unit. A steam inlet of the steam-water mixing heater is connected with the turboset, a water inlet of the steam-water mixing heater is connected with an outlet of the low-temperature water storage tank, and a water outlet of the steam-water mixing heater is connected with an inlet of the high-temperature water storage tank. An inlet of the low-temperature water storage tank and an outlet of the high-temperature water storage tank are both connected with a condensed water outlet of the heat regeneration system. The problem that potential safety hazards exist due to the fact that the deep peak regulation capacity is insufficient in the prior art is solved.

The invention discloses a steam turbine low-pressure inner cylinder with a multi-stage steam extraction opening structure, and belongs to the technical field of thermal power steam turbines. According to the low-pressure inner cylinder, through the asymmetric combination design of a steam turbine side partition plate holding ring and a motor side partition plate holding ring, a first-stage partition plate holding ring is independently arranged on the steam turbine side, a second-stage partition plate holding ring and a third-stage partition plate holding ring are integrated, the first-stage partition plate holding ring and the second-stage partition plate holding ring are integrated on the motor side, the third-stage partition plate holding ring is independently arranged on the motor side, and a fourth-stage steam extraction opening is integrated on the single inner cylinder in cooperation with a fourth-stage partition plate holding ring which is symmetrically arranged; the steam extraction pipes adopt a mode of combining same-side concentration and diagonal distribution, so that the degree of asymmetry of steam extraction is reduced; the problems that a traditional low-pressure inner cylinder structure is not universal, cannot be matched with a low-pressure heater and is uneven in multi-cylinder steam extraction amount are solved, module generalization and compact arrangement of a steam extraction cavity are achieved, the low-pressure inner cylinder structure is suitable for double-cylinder and three-cylinder configuration units, the economical efficiency and reliability of a steam turbine regenerative system are remarkably improved, and the manufacturing and maintenance cost is reduced.

The invention discloses a waste oil distillation regeneration system and method based on internal heating and internal circulation, and belongs to the technical field of waste oil regeneration treatment. The system comprises a distiller, a vacuum system, a condensation collection system, an electromagnetic heating device and a double stirring device. The electromagnetic heating device directly heats the distiller tank body through induction heating, and the heat efficiency reaches 90%-98%; the double-stirring device is composed of an outer-layer low-speed stirrer and an inner-layer high-speed stirrer, a forced internal circulation flow field is formed, heat transfer is enhanced, coking is prevented, it is ensured that the temperature of raw oil is uniform, and the overall temperature gradient is controlled within + / -0.5 DEG C. According to the method, through cooperative operation of vacuum pressure reduction, electromagnetic heating and internal circulation, efficient distillation is achieved, the yield of the base oil is remarkably increased, and energy consumption and operation cost are reduced. The system structure is simplified, traditional boilers and external pipelines are omitted, the stability and safety are greatly improved, the occupied area of equipment is small, the maintenance cost is low, and both environmental protection and economic benefits are achieved.

The utility model discloses a coal-fired unit rapid and flexible peak and frequency regulation system based on high-temperature working medium energy storage / supply, which relates to the field of conventional power generation technology and energy storage technology and comprises a coal-fired unit thermodynamic cycle system and a high-temperature furnace water energy storage / supply system, the high-temperature furnace water storage and supply / energy system is deeply coupled with the coal-fired unit thermodynamic cycle system, and the power capability and the power generation load of the coal-fired unit are quickly improved by reducing the steam extraction amount of each stage of a steam turbine in the coal-fired unit thermodynamic cycle system, so that the climbing rate of the coal-fired unit is improved; and meanwhile, through direct cooperative energy supply of the high-temperature boiler water storage / energy supply system, the high-enthalpy-value working medium stored by the high-temperature boiler water storage / energy supply system heats boiler feed water in the regenerative system, the temperature of the boiler feed water is increased, then the boiler steam yield is increased, and the rapid variable load response capacity of the coal-fired unit is improved.

The application provides a flexible regenerative system and method for improving the variable load rate of a coal-fired power generating unit, and belongs to the field of heat storage peak regulation. The system comprises a steam turbine, a generator, a condenser, a steam extraction pipeline, an exhaust steam pipeline, a first regenerative unit, a heat storage tank, a sprayer, a spray water pipeline and a boiler. The generator is connected to the steam turbine, the inlet of the steam turbine is connected to the outlet of the boiler, the first outlet of the steam turbine is connected to the first inlet of the first regenerative unit through the steam extraction pipeline, the condenser is arranged between the second outlet of the steam turbine and the second inlet of the first regenerative unit, and the outlet of the first regenerative unit is connected to the inlet of the boiler. The sprayer is arranged in the heat storage tank, the spray water pipeline is connected to the sprayer, the inlet of the heat storage tank is connected to the first outlet of the steam turbine, and the first outlet of the heat storage tank is connected to the first inlet of the first regenerative unit. Through the system provided by the application, the deep peak regulation capacity and the rapid variable load capacity of the steam turbine generator unit can be further improved.

The utility model provides an activated carbon circulation system for remote regeneration of desulfurization and denitrification activated carbon, after a purification reactor and a regeneration system are separated in space, the cyclic utilization of activated carbon between the purification reactor and the regeneration system can still be realized, and the activated carbon circulation system comprises a feeding and storage system for storing the regenerated activated carbon; the charging and adsorption system is communicated with the loading and storage system and is used for extracting the regenerated activated carbon and conveying the regenerated activated carbon into a purification reactor to remove and purify flue gas pollutants; the discharging and storing system is communicated with the charging and adsorbing system and is used for receiving and storing the adsorbed activated carbon discharged by the purifying reactor; the transfer system is communicated between the discharging and storing system and the activated carbon regeneration system and is used for conveying the adsorbed activated carbon stored in the discharging and storing system to the activated carbon regeneration system for regeneration; the transfer system further communicates between the activated carbon regeneration system and the feeding and storage system and is used for conveying the regenerated activated carbon to the feeding and storage system for storage.

The invention provides a dynamic control method and system for the outlet water temperature of low-pressure heater condensed water. The dynamic control method comprises the steps that the set highest temperature of the outlet water temperature of the low-pressure heater set condensed water is obtained; confirming the highest condensed water outlet temperature capable of being provided by low-pressure heating steam; the optimal allowable operation temperature of the low-pressure heater equipment is obtained; based on the set highest temperature, the highest condensed water outlet temperature and the optimal allowable operation temperature, the dynamic highest limit value of the low-pressure heating condensed water outlet temperature is obtained in real time; and the dynamic maximum limit value is added into low-pressure heater outlet water temperature control logic, and the low-pressure heater condensate outlet water temperature is dynamically adjusted and controlled. According to the method, by designing a mode of supporting data and dynamically adjusting and controlling the outlet water temperature of the low-pressure heater condensed water, the consumption of low-quality steam of a heating steam source of the low-pressure heater is improved, the consumption of high-quality steam, namely the consumption of heating steam of the deaerator, is reduced, and sufficient energy gradient utilization of heating steam in a unit regenerative system is achieved.

The solution negative pressure regeneration system comprises a regeneration device which is provided with a first inlet, a first outlet and a second outlet, and the second outlet, the first inlet and the first outlet are sequentially arranged from top to bottom; an outlet of the dilute solution supply pipeline is connected with the first inlet; an inlet of the concentrated solution discharge pipeline is connected with the first outlet; an inlet of the exhaust pipeline is connected with the second outlet; the heater is used for heating a working medium in the dilute solution supply pipeline; and the vacuumizing device is connected with the exhaust pipeline, and the vacuumizing device can vacuumize the regeneration device through the exhaust pipeline so as to reduce the air pressure in the regeneration device. Therefore, according to the solution negative pressure regeneration system, the boiling point of the solution can be reduced, and a low-quality heat source is used for heating the dilute solution.

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of refrigeration and heat pumps. An air channel outside communicates with a charring-regeneration system through a heat source regenerator, the charring-regeneration system communicates with the outside through a smoke channel via a heat source heat exchanger and the heat source regenerator and communicates with a combustion chamber through a CO-rich smoke channel, and the combustion chamber communicates with the outside through a smoke channel via the heat source heat exchanger and the heat source regenerator. A compressor is communicated with a heat supplier through a heat source heat exchanger, a combustion chamber and an expansion machine, the heat supplier is provided with a steam channel which is communicated with a heat regenerator through a second expansion machine and then divided into two paths, the first path is led out from the heat regenerator to be communicated with a high-pressure steam inlet of an ejector, and the second path is communicated with an evaporator through a throttling valve. The evaporator communicates with a low-pressure steam suction inlet of the ejector, the ejector communicates with the heat regenerator, and the heat regenerator communicates with the compressor. The heat supply device is communicated with the outside through a heated medium channel, the evaporator is communicated with the outside through a refrigerated medium channel, and the catalyst regeneration energy recovery heat pump system is formed.

The application discloses a steam turbine unit thermal economy index calculation method, system, equipment and a storage medium, and belongs to the technical field of steam turbine generator unit thermal system performance monitoring and energy efficiency evaluation. First, original operation thermal parameters of the steam turbine unit are acquired, including each shaft seal steam leakage fraction and specific enthalpy. According to the steam-water flow of the regenerative system, a heat balance equation of each regenerative device is established, considering the device efficiency, shaft seal steam leakage and the influence of the step-by-step gravity flow of the drain water. The steam extraction, drain water and condensing fraction of each stage are obtained by step-by-step solving. The work deficiency coefficient of the steam extraction and shaft seal steam leakage of each stage is calculated, and then the new steam consumption is obtained. The actual output power of the unit is calculated, and is closed-loop checked with the measured power generation power. When the error exceeds the preset range, the parameters are corrected and the calculation is repeated until the requirements are met. Finally, the thermal economy index of the unit is calculated based on the checked parameters.

The utility model relates to the technical field of thermal power generation, in particular to an elastic heat regeneration system under deep peak regulation of a steam turbine with a steam supplementing valve, which comprises a deaerator, a booster pump, a water feeding pump, an existing final-stage high-pressure heater, a boiler and a high-pressure cylinder. A feed water outlet of the feed pump is communicated with a feed water inlet of the existing final-stage high-pressure heater, a feed water outlet of the existing final-stage high-pressure heater is communicated with a feed water inlet of the boiler, a steam outlet of the boiler is communicated with a steam inlet of the high-pressure cylinder, and a steam extraction opening of the high-pressure cylinder is communicated with a steam inlet of the existing final-stage high-pressure heater; the main steam valve and the steam supplementing valve are arranged in parallel, inlets of the main steam valve and the steam supplementing valve are both communicated with a steam outlet of the boiler, an outlet of the main steam valve is communicated with a steam inlet of the high-pressure cylinder, and an outlet of the steam supplementing valve and a steam extraction opening of the high-pressure cylinder are both communicated with a steam inlet of the hot secondary air heater; and a steam outlet of the hot secondary air heater is communicated with a steam inlet of the boiler. The utility model can improve the fuel utilization rate.

The utility model discloses a double-unit regenerative turboset, and relates to the technical field of turbines. The problems that the irreversible loss is increased and the manufacturing cost is increased when a regenerative system extracts steam along with the increase of steam parameters in the prior art are solved. The system comprises a main steam turbine and a small steam turbine, the main steam turbine comprises an ultrahigh-pressure cylinder, a steam inlet of the small steam turbine is connected with a high-pressure steam guide pipe, an inlet of the high-pressure steam guide pipe is connected with a main steam adjusting valve, a steam inlet of the main steam adjusting valve is communicated with a steam outlet of the ultrahigh-pressure cylinder, and a steam outlet of the main steam adjusting valve is communicated with a steam outlet of the ultrahigh-pressure cylinder. The small steam turbine is used for driving the feed pump to operate, steam firstly enters the ultrahigh-pressure cylinder to do work, part of steam discharged from the ultrahigh-pressure cylinder is used for driving the small steam turbine and driving the feed pump to supply water to the boiler, and meanwhile extracted steam and exhausted steam of the small steam turbine serve as regenerative extracted steam and return to a regenerative system of the main steam turbine to heat condensed water and feed water. The steam temperature after acting of the small steam turbine is lower, loss can be reduced, and the overall heat efficiency of the unit is improved.

The utility model discloses a novel silica gel regeneration system which comprises a recycle gas separator, one end of the recycle gas separator is respectively connected with a first ammonia cooler and a second ammonia cooler through a three-way pipe, one end of the first ammonia cooler far away from the recycle gas separator is connected with a first water separator, and the other end of the first ammonia cooler far away from the recycle gas separator is connected with a second water separator. One end, far away from the circulating gas separator, of the second ammonia cooler is connected with a second water separator; a first conveying pipe is mounted at the upper end of the first water separator; compared with the prior art, double paths are arranged from the circulating gas separator to the first ammonia cooler or the second ammonia cooler, and then the circulating gas enters the first water separator or the second water separator from the first ammonia cooler or the second ammonia cooler; then, the water enters the first silica gel regenerator or the second silica gel regenerator through the electric heater from the first water separator or the second water separator, and finally flows into the turbine motor terminal through the turbine motor terminal flow pipe, so that a double-path silica gel regeneration system can be realized, and shutdown is avoided.