464results about "Water feed control" patented technology

The invention discloses a dynamic monitoring-based deaerator water supply control method and system for a nuclear power plant, and relates to the field of deaerator water supply control, and the method comprises the steps: firstly, through a hybrid online identification algorithm, analyzing a historical valve position instruction and a water supply flow sequence in real time, and dynamically estimating the local gain and hysteresis width of a valve under the current working condition; then, the parameters identified in real time are utilized to carry out prospective compensation on the expected flow variation calculated by the main controller. In other words, the instruction amplitude is adjusted according to the estimated local gain, and it is ensured that consistent flow response can be obtained under different loads; meanwhile, when the instruction is reverse, the compensation amount is actively applied according to the estimated hysteresis width so as to eliminate the adjustment dead zone and oscillation caused by hysteresis. In this way, the nonlinear object of the valve is equivalent to a linear link with consistent response, and the stability and accuracy of the deaerator water level control system in the full working condition range are remarkably improved.

The invention discloses a steam generator water level control method, system and device based on digital twinning, and the method comprises the steps: obtaining the detection information obtained through the detection of a sensor in real time, and outputting the actual measurement water level to a water level regulator, so as to obtain the feed water flow regulation amount; the detection information is analyzed according to the real-time online heat balance model to obtain an analysis result, the analysis result and the feed water flow adjusting amount are output to a first flow regulator, and the first flow regulator correspondingly outputs a control instruction to a feed water adjusting valve for feed water flow adjustment. According to the control method, by means of the digital twinning technology and the numerical simulation technology, the water level control process is improved to achieve accurate adjustment, and the operation reliability, the equipment safety, the operation convenience and the operation efficiency of the nuclear power station steam generator are improved.

The invention discloses a coal-fired unit main steam temperature control method based on feed water flow asynchronous regulation, which comprises the following steps of: firstly, calculating the variation of total heat carried by a boiler drum inlet working medium corresponding to unit feed water flow change, and further calculating the variation of saturated steam flow generated by a drum according to energy balance; therefore, the main steam temperature change value corresponding to the change of the unit feed water flow is obtained, then the feed-forward quantity of the main steam temperature deviation on the regulation of the feed water flow of the boiler system is obtained in combination with the real-time deviation of the main steam temperature, and asynchronous regulation of the feed water flow is realized. According to the method, the control effect of the main steam temperature can be greatly improved, and the method is of great significance to improvement of the rapid load changing capacity of the coal-fired unit.

The invention relates to the technical field of automatic control, in particular to a water quality control method and system for a through-flow boiler. The method comprises the following steps: collecting a liquid sensing signal and a temperature sensing signal in the through-flow boiler; performing preliminary liquid resistance value calculation processing according to the liquid sensing signal to generate preliminary liquid resistance value data; performing liquid resistance value correction processing of temperature compensation on the initial liquid resistance value data based on the temperature sensing signal to generate liquid resistance value data; water feeding operation of a water feeding pump of the through-flow boiler is executed; performing instant liquid conductivity and dissolved solid concentration analysis processing on the liquid resistance value data according to the water supply operation of the water supply pump to respectively obtain an instant liquid conductivity signal and instant dissolved solid concentration data; and according to the instant liquid conductivity signal and the instant dissolved solid concentration data, pollution discharge control operation of the through-flow boiler is executed. By analyzing the water quality characteristics of the through-flow boiler, intelligent and efficient water quality pollution discharge control is realized.

The invention discloses a once-through furnace water supply system coupled with a steam feed pump set and a hydraulic turbine booster pump set and a control method. Compared with a conventional once-through furnace water supply system, the once-through furnace water supply system is coupled with a full-flow water supply bypass system comprising a water supply bypass header, the hydraulic turbine booster pump set, a water storage tank and other equipment; the device is put into use during deep peak regulation of the once-through furnace. Detailed control strategies are elaborated on the basis and include control methods of the full-flow water supply bypass system in different stages of commissioning, dry-wet state conversion and the like. According to the method, the economical efficiency and the adjusting performance of the direct-current furnace during deep peak shaving are improved, the inlet flue gas temperature and the denitration efficiency of the SCR denitration system can be increased by improving the dry-wet state conversion load point of the direct-current furnace, and the environment-friendly performance of the direct-current furnace during deep peak shaving is improved.

The invention belongs to the technical field of thermal power generation control, and particularly discloses an automatic control method for tripping of a high-pressure heater drain pump of a thermal power generating unit, which comprises the following steps: step 1, gradually reducing the coal quantity of the thermal power generating unit according to a preset first rate, and enabling the thermal power generating unit to run in a sliding pressure manner in a steam turbine tracking manner; 2, the real-time coal quantity of the thermal power generating unit is obtained, the total air volume and the primary air pressure are regulated and controlled according to the real-time coal quantity, meanwhile, the locking preset time of boiler core equipment of the thermal power generating unit is regulated and controlled, and the operation number of a coal pulverizing system is regulated and controlled; 3, the feed water flow of a feed pump, the pressure of a condensate pump, main steam parameters of a steam turbine and the final-stage high-pressure heater liquid level are regulated and controlled; and 4, whether the unit load, the feed water flow, the main steam parameters and the final-stage high-pressure heater liquid level meet the control ending conditions or not is judged in real time, and if not, the step 2 to the step 4 are repeated. According to the method, the non-planned shutdown frequency can be remarkably reduced, and the operation reliability and safety of the thermal power generating unit are greatly improved.

The invention provides a water supply control method, system and device of a supercritical generator set and a program product. The method comprises the steps of obtaining set starting data; responding to the condition that the unit starting data meets the starting stage switching condition, and switching the current starting stage to the next starting stage; an opening degree calculation function, matched with the current starting stage, of the water supply bypass adjusting valve is obtained, and the target opening degree of the water supply bypass adjusting valve is obtained through calculation according to the opening degree calculation function and the boiler combustion rate; and the opening degree of a water supply bypass adjusting valve is controlled to be the target opening degree, and the start-stop state of a water supply main path water inlet valve is controlled according to the current start stage. By dividing the unit starting stages and establishing the dynamic coupling relation between the boiler combustion rate and the water supply bypass regulating valve opening degree, accurate matching of the fuel amount and the water supply amount is achieved, the water supply bypass regulating valve opening degree can be automatically adjusted according to the real-time operation working condition of the unit, the starting time is shortened, the starting cost is reduced, and the starting efficiency is improved. And meanwhile, the automation and intelligence level is improved.

The utility model provides a steam generating device and a steam household appliance, the steam generating device comprises a water tank assembly, the water tank assembly is provided with a steam cavity, a water supplementing cavity and a mounting groove, the mounting groove is arranged on the bottom wall of the water supplementing cavity, the bottom wall of the steam cavity is lower than the bottom wall of the water supplementing cavity, and the steam cavity is communicated with the water supplementing cavity through the mounting groove; the heating piece is arranged below the steam cavity; the water control valve is detachably assembled in the mounting groove, and the water control valve comprises a float valve structure used for controlling connection and disconnection between the steam cavity and the water supplementing cavity. According to the steam generation device, the water control valve can be detached from the mounting groove, so that a user can conveniently clean the water control valve, the use safety and the operation reliability of the steam generation device are guaranteed, the water control valve is remounted to the mounting groove after cleaning is completed, the mounting process is simple and convenient, and the attractiveness of the overall structure of the steam generation device can be guaranteed; and the structure of the water control valve is visual, so that a user can sense the use condition of the water control valve.

The invention belongs to the technical field of cooking equipment, and discloses a steam generation assembly, a control method of the steam generation assembly, a steam box and an integrated cooker. According to the steam generation assembly, the water inlet of the heating disc is provided with the protruding part, the protruding part is higher than the water level in the water tank, the water temperature and / or the temperature rise rate of the position, close to the water inlet, of the water inlet pipe are / is monitored through the first temperature sensing element, and the water shortage state of the water tank can be rapidly judged due to the fact that the water amount is small and the temperature change is more remarkable. And after determining that the water inlet is lack of water, further judging whether the heating disc is in dry burning or not by combining the heating body temperature and / or the temperature rise rate monitored by the second temperature sensing element. And the accuracy and the reliability of judgment are improved through cooperative monitoring of the double temperature-sensing elements. In addition, by recognizing the water shortage of the water tank in advance, the temperature threshold T3 of the heating body in the dry burning state can be properly reduced, the logic judgment time is shortened, the dry burning duration is shortened, the heating disc is effectively protected, and the service life of the heating disc is prolonged.

The invention discloses a novel heating control mode for a thermal deaerator of a converter flue gas waste heat boiler, which relates to the technical field of waste heat boiler equipment and comprises the following main steps of inspection before operation, water feeding operation, heating preparation, heating control, operation monitoring and heating ending and shutdown. Parameters such as water level, water replenishing quantity, a regulating valve, temperature detection and a flow meter are controlled through the deaerator, heat of circulating return water of a movable smoke hood, an oxygen lance opening and a discharging opening of the boiler and cooling water quantity during water replenishing of the deaerator are calculated, temperature rise of added soft water is calculated, and meanwhile, a PLC program is matched, so that the temperature of the boiler is increased. According to the method, the water supplementing amount during smelting and the steam heating amount of water supplementing in the non-smelting period are automatically controlled, a heating adjusting valve and a water supplementing adjusting valve of the deoxygenization water device are controlled, temperature control over the deoxygenization device is achieved, the deoxygenization device reaches the optimal deoxygenization temperature, and the problem that the optimal deoxygenization temperature cannot be guaranteed due to the discontinuity of converter steelmaking is solved.

The invention discloses a closed steam Rankine cycle power system configuration optimization and variable load control method based on heat storage feed-forward, and the closed steam Rankine cycle power system configuration optimization comprises the steps: adding a water supply bypass valve and a water storage tank in a system; an inlet water temperature sensor and an outlet steam temperature sensor are arranged at an inlet and an outlet of a boiler respectively, a fuel flow meter is arranged at an outlet of a fuel regulating valve, a water flow meter is arranged at an outlet of a main water supply valve, a power sensor is arranged at a rotating shaft of a turbine, and the water supply flow regulating capacity and the dynamic stability capacity of the system are improved through system configuration optimization. A system variable load control strategy after configuration optimization is further provided, a water supply bypass valve is adopted to control the system operation load, a fuel regulating valve is adopted to control the boiler outlet steam temperature, and the deviation between the steady-state heat storage capacity and the real-time heat storage capacity of the boiler is used as a fuel regulating valve auxiliary control signal. The system effectively solves the problems of overshoot of the steam temperature of the boiler outlet and low variable load rate of the system, and improves the safety and the rapid variable load capacity.

The invention relates to a water level control method and device of a steam generator and computer equipment. The method comprises the steps that under the condition that it is detected that a main feed water valve of the steam generator has an upward floating fault, the feed water flow adjustment amount of the steam generator is determined according to the inlet and outlet water flow, the current water level value and the preset water level fixed value of the steam generator; determining an opening signal of a bypass valve based on a preset corresponding relation between the feed water flow and the opening signal of the bypass valve of the steam generator and the feed water flow adjustment amount; and the opening degree of the bypass valve is adjusted according to the opening degree signal, so that water level control over the steam generator is achieved. By the adoption of the method, disturbance to other steam generators can be avoided while the water level of the steam generator with the main water supply valve having the floating fault is adjusted to the stable state.

Disclosed in the present application is a feedwater system for an evaporator of a reactor nuclear power unit. By means of sensors, the feedwater system monitors in real time the operating state of an evaporator, such as water level, temperature and pressure parameters, and data processing and analysis algorithms are introduced to a backend to perform time-series collaborative correlation analysis on these operating parameters of the evaporator, so as to monitor in real time the operating state of the evaporator. In this way, an opening value of a regulation valve can be adaptively controlled in real time on the basis of the operating state of the evaporator, such that automatic control over the feedwater system for the evaporator of the reactor nuclear power unit is implemented, thereby meeting the requirements of the flow and pressure of feedwater, ensuring the stability and safety of the feedwater system, and improving the safety and efficiency of nuclear power stations.

Disclosed in the present application is a water-feeding control system for an evaporator of a nuclear power unit of a reactor. First, pressure values of a reactor at a plurality of pre-determined time points within a pre-determined period of time are collected by means of a pressure sensor, and water-injection speed values at the plurality of pre-determined time points are collected; then, the pressure values at the plurality of pre-determined time points and the water-injection speed values at the plurality of pre-determined time points are respectively arranged according to a time dimension to form a pressure time-series input vector and a water-injection-speed time-series input vector; next, time-series interactive association analysis is performed on the pressure time-series input vector and the water-injection-speed time-series input vector, so as to obtain a pressure-water injection speed time-series interaction feature; and finally, on the basis of the pressure-water injection speed time-series interaction feature, whether a water-injection speed value at a current time point should be increased or decreased is determined. In this way, the performance of a water-feeding control system can be improved, thereby maintaining the stable operation of a reactor.

The present invention relates to the technical field of boiler control, and discloses a control method for a feedwater recirculation regulating valve, including the following aspects: (1) recirculation operation process, when the pressure exceeds a certain set value, the minimum flow valve opens; when the pressure is lower than a certain set value, the minimum flow valve closes; (2) system optimization and regulation, the feedwater pump minimum flow control system only works in the feedwater pump startup and low load stages; (3) intelligent feedforward optimization of the recirculation gate, adding feedforward control, and constructing precise intelligent feedforward according to typical operating test data and unit operation data; (4) automatic optimization of the recirculation gate; (5) optimization of feedwater recirculation protection logic. Compared with the prior art, the advantages are: by optimizing the control strategy and adjusting the parameters of the steam pump recirculation regulating valve, the steam pump flow and the boiler feedwater flow can be effectively controlled within the required deviation range in the low load stage of the unit, thereby improving the safety and stability of the unit in the deep peak regulation stage.

The invention provides an anti-dry-burning control method of an evaporator and cooking equipment, and relates to the technical field of smart home, the method comprises the following steps: monitoring a temperature parameter of the evaporator through a temperature sensor in response to a starting operation for the evaporator; calculating a slope parameter corresponding to the temperature parameter; the working state of the evaporator is determined according to the temperature parameter and the slope parameter; and determining a water supplementing strategy of the evaporator based on the working state. According to the anti-dry-burning control method for the evaporator and the cooking equipment, the starting operation for the evaporator can be responded, and the temperature parameter of the evaporator is monitored through the temperature sensor; calculating a slope parameter corresponding to the temperature parameter; the working state of the evaporator is determined according to the temperature number and the slope parameter; the water supplementing strategy of the evaporator is determined on the basis of the working state, so that water can be supplemented to the evaporator in time in the corresponding working state, the phenomenon of dry burning of the evaporator is avoided, and the reliability requirement of cooking equipment such as a steaming oven for dry burning prevention is met.

The invention provides a method, device and equipment for controlling the steam drum water level of a gas-steam combined cycle unit. The method comprises the steps that the opening degree of an inlet guide vane of a gas compressor, the turbine exhaust temperature, the feed water flow, the steam flow, a steam drum water level set value and the steam drum water level are obtained in real time; according to the opening degree of an inlet guide vane of a gas compressor and the exhaust temperature of a turbine, the gas turbine side feed-forward control quantity is determined; according to the steam drum water level set value and the steam drum water level, a first PID controller is adopted to determine an original feed water flow set value; according to the feed water flow, the steam flow, the original feed water flow set value and the gas turbine side feed-forward control quantity, a second PID controller is adopted to determine a first feed water adjusting valve opening instruction; and adjusting the opening degree of the feed water adjusting valve according to the first feed water adjusting valve opening degree instruction, and controlling the steam drum water level of the gas-steam combined cycle unit. According to the invention, reliable guarantee is provided for safe and efficient operation of the unit through a cooperative regulation mechanism of the gas turbine side feed-forward control quantity and three-impulse control.

The application discloses a generator set shared peak regulation system and a working method thereof. The system comprises a steam generator, a steam power generation device, a heat recovery device, a generator, an energy storage switch, a water taking shutoff valve, a backwater regulating valve, a molten salt cold tank, a cold molten salt pump, a molten salt electric heater, a hot molten salt tank, a hot molten salt pump, a feedwater heater inlet shutoff valve, a feedwater heater, a feedwater heater outlet shutoff valve, a heat network water heater inlet shutoff valve, a heat network water heater, a heat network water heater outlet regulating valve and a heat network water taking shutoff valve. The application realizes the peak regulation of two or more generators by one peak regulation system, is a shared energy storage system, uses a heat storage medium such as molten salt to realize large-capacity, long-time and high-quality energy storage, realizes the deep peak regulation of the unit, and the heat energy has diversified uses. The application can realize the flexible transformation of the whole plant through single investment, and has high equipment utilization.

The present invention discloses a method for rapid load response based on a small bypass regulation of high-pressure heater feedwater under deep peak regulation. The feedwater bypass regulation function is realized by adding a small flow regulation bypass on the basis of the original high-pressure heater bypass. When the unit needs to increase the load, the feedwater flow through the high-pressure heater is reduced, thereby reducing the extraction steam flow of the high-pressure heater. The reduced part of the extraction steam returns to the steam turbine to do work, thereby increasing the load. Conversely, when the unit needs to reduce the load, the high-pressure heater bypass feedwater flow is actively reduced, the heat recovery extraction steam flow of the high-pressure heater is increased, and the steam flow doing work in the steam turbine is reduced to reduce the load. By adopting this method, the stability of the unit when the unit increases or decreases the load can be greatly improved, the rapid response rate of the unit load can be improved, and the safety of the unit operation under deep peak regulation can be improved.

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 application discloses a water supply device and a mixed speed regulation control method and device thereof and a storage medium, wherein the water supply device comprises a boiler, a high-pressure heater and a first water supply device and at least one second water supply device connected in parallel, the first water supply device comprises a first water supply pump and a hydraulic coupler, the second water supply device comprises a second water supply pump and a variable frequency motor, the method comprises the following steps: adjusting the rotating speed of the first water supply pump by configuring the scoop pipe opening degree of the hydraulic coupler, and adjusting the rotating speed of the second water supply pump by configuring the operating frequency of the variable frequency motor; heating the pumped water through the high-pressure heater, and conducting convection on the hot water output by the high-pressure heater through the boiler to output superheated steam; acquiring the drum water level of the boiler; determining the target rotating speed according to the drum water level, and determining the scoop pipe opening degree instruction and the variable frequency instruction according to the target rotating speed to control the scoop pipe opening degree of the hydraulic coupler and the operating frequency of the variable frequency motor, so that the drum water level is in a preset water level interval.

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

The invention provides an intelligent operation control system and method for a waste heat boiler, and belongs to the field of boiler control, and the intelligent operation control system comprises a boiler water supplementing subsystem which is used for continuously supplementing water and adjusting the liquid level of a heat balance storage tank; the steam heating subsystem is used for heating boiler water and adjusting the temperature; the boiler water circulation subsystem is used for carrying out circulation heat exchange and adjusting pressure; the automatic control subsystem is used for collecting a liquid level signal, a temperature signal, a pressure signal and system operation working condition parameters of the heat balance storage tank in real time, and carrying out working condition self-adaptive weight distribution and multi-loop coordination control based on the liquid level signal, the temperature signal, the pressure signal and the system operation working condition parameters; and multivariable abnormal evaluation and hierarchical protection control are carried out on the operation state of the waste heat boiler. The operation stability and control precision of the waste heat boiler are improved, temperature overshoot and unnecessary protection shutdown are reduced, and the service life of equipment is prolonged.

The electric heating steam generator comprises a box body, a pressure sensor is fixedly connected to the corner of the inner surface of the box body, a supporting plate is fixedly connected to the top face of the pressure sensor, a first heating barrel is fixedly connected to the top face of the left side of the supporting plate, and a second heating barrel is fixedly connected to the top face of the right side of the supporting plate. A second heating barrel is fixedly connected to the top face of the right side of the supporting plate, a plurality of electric heating pipes are fixedly connected to the inner side walls of the first heating barrel and the second heating barrel, electromagnetic water inlet valves are in threaded connection with the rear side faces of the first heating barrel and the second heating barrel, and barrel covers are in threaded connection with the top ends of the first heating barrel and the second heating barrel; the top face of the can cover is in threaded connection with an electromagnetic pressure valve, and the front side face of the box body is fixedly connected with a control panel. The pressure sensor, the first heating barrel, the second heating barrel, the electromagnetic water inlet valve, the electromagnetic pressure valve and the control panel are arranged, so that steam can be continuously generated, and water can be automatically added.

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 present application relates to a method for reducing the start-up time of a water-cooled wall standby furnace, which uses equipment including a gasifier water-cooled wall, a steam drum and a water-cooled wall circulating water pump. The present application makes full use of the heat of the continuous blowdown of the operating series steam drum, and realizes the maintenance of the standby series water-cooled wall temperature, and the system is simple and the control is convenient; compared with the prior art, the present application can reduce the start-up time of the standby furnace, reduce the impact of the gasifier trip on the device operation load, and reduce the economic loss caused by shutdown. According to the water baking time of 8 hours, the present application can reduce the economic loss of 8 hours caused by unplanned shutdown, and according to the gasification scale of 100,000 standard cubic meters / hour of effective gas production, the economic loss can be reduced by nearly 500,000 yuan.

The invention provides a supercritical circulating fluidized bed unit dry and wet state automatic conversion and whole-course water supply control system and method, and belongs to the technical field of automatic control. The problems of low automatic input rate, complex and difficult wet state control strategy, large dry and wet state conversion disturbance, load control breakpoints and the like in once-through boiler feed water control in the deep peak regulation coordinated variable load process of the unit are solved; the main steam flow is corrected by introducing the enthalpy value of the last-stage superheater and the enthalpy value of the outlet of the separator on the basis of a self-balancing water supply control strategy, the heat released / absorbed by the boiler is dynamically reflected, the balance of the heat load and the evaporation capacity of the boiler is guaranteed, and meanwhile the boiler bed temperature and the wall temperature of a certain area of the boiler are corrected in real time; according to the method, the same set of control strategy is adopted for water supply control in the dry state and the wet state of the boiler, and switching and transformation of water supply control modes are not needed. Meanwhile, power control and dry-wet state conversion control are combined, and continuous power control in the dry-wet state conversion process is achieved.

A medical high-purity compressed steam generating device, which relates to the technical field of steam generators, solves the technical deficiency that the steam generated by the existing steam generators cannot meet the medical standards, and the technical means adopted include: an industrial computer, a water tank, a water injection pump, a first one-way valve, a steam generator, a steam booster pump, a second one-way valve and a compressed steam gas storage tank, and the compressed steam gas storage tank is provided with a pressure sensor and a second exhaust port. The beneficial effect of the present invention is that the industrial computer controls the water injection pump to pump the water in the water tank into the steam generator through the first one-way valve to heat the water to generate low-purity and low-pressure steam, and then the industrial computer controls the steam booster pump to operate according to the sensing data of the pressure sensor to pump the low-purity and low-pressure steam generated by the steam generator into the compressed steam gas storage tank for compression and pressurization, thereby improving the purity and pressure of the steam in the compressed steam gas storage tank, so that it meets the hygienic standards of medical pure steam, expanding the scope of use of the present invention, and having higher safety and automation.

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.

The invention discloses a feed water recycling energy intelligent recovery system based on a double-input gear box, and relates to the technical field of thermal power plant energy saving. The system comprises a water supply main path, a recirculation loop, an energy recovery branch and a driving transmission system. The driving transmission system adopts a double-input gear box and is respectively connected with a driving steam turbine and a first-stage hydraulic turbine through two clutches, so that three modes of pure steam driving, pure liquid driving and hybrid driving of the booster pump are realized. The intelligent control system switches modes on line according to working conditions, and energy recovery is maximized on the premise that safety is guaranteed. The device solves the problem of mechanical coupling of hydraulic turbine energy recovery and an existing steam feed pump system, has the advantages of being high in efficiency, stable in switching, high in space adaptability, safe, reliable and the like, and is suitable for energy-saving transformation of a large thermal power generating unit.