249results 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 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 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 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 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 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.

The application provides a thermal power station circulating cooling water waste heat recycling system and a working method thereof. The system uses waste heat generated by cooling of thermal power station equipment to heat raw water or desalted water, improves water production capacity of the desalted water, and reduces circulating water pollution. A coagulation sedimentation tank, a filter tank and a water storage tank are connected in sequence. A temperature detector is installed on an inlet pipe of the filter tank. The water storage tank is connected with a production water supply system, a desalted water production system and a desalted circulating water supply pipe. An outlet bypass pipe is connected with the coagulation sedimentation tank and a cooling tower. A backwater bypass pipe is connected with the coagulation sedimentation tank and a circulating water backwater main pipe. Temperature detectors and regulating valves are installed on the outlet bypass pipe and the backwater bypass pipe. A desalted circulating backwater pipe is connected with the desalted water production system and the circulating water backwater main pipe. A desalted circulating water supply pipe is connected with a circulating water supply main pipe. Isolation valves are installed on the desalted circulating water supply pipe, the desalted circulating backwater pipe, the circulating water supply main pipe and the circulating water backwater main pipe.

This application relates to the field of nuclear energy science and engineering, and particularly to a method and system for controlling feedwater in a direct-current steam generator. The control method includes: establishing a first mapping relationship between feedwater pressure and feedwater flow rate of the pump-valve system based on collected operating parameters of the direct-current steam generator; obtaining a steam pressure deviation value based on the current steam pressure value and the steam pressure setpoint; obtaining a steam superheat deviation value based on the current steam pressure value, the current steam temperature value, and the steam superheat threshold of the direct-current steam generator; obtaining the required feedwater pump speed and the required feedwater valve opening value based on the steam superheat deviation value, the steam pressure deviation value, and the first mapping relationship; and adjusting the feedwater pump to the required speed value and the feedwater valve to the required opening value. This application provides a method and system for controlling feedwater in a direct-current steam generator to solve the problem in related technologies of the inability to quickly and accurately control the outlet steam parameters of a direct-current steam generator.

An air inlet device and an exhaust mechanism are connected to the two sides of the recuperative boiler body respectively, and the recuperative boiler body comprises a water inlet bin, a combustion layer and a steam storage bin which are sequentially arranged from bottom to top. The combustion layer comprises a combustion bin communicated with the air inlet device and the exhaust mechanism, and an isolation bin for isolating the combustion bin from the outer wall; a plurality of steam guide pipes which vertically communicate with the water inlet bin and the steam storage bin and are arranged at intervals are arranged in the combustion bin; two membrane walls for separating the isolation bin from the combustion bin are arranged in the combustion layer; the membrane wall guides high-temperature airflow to flow to the exhaust mechanism; and the combustion bin is provided with a convex inner cavity which is gradually expanded close to the exhaust mechanism. According to the utility model, the structural design is reasonable, the convex space is arranged in the combustion bin, the narrower air duct is arranged at the ignition port to guide high-temperature air flow to quickly pass through, and the larger space is arranged at the position far away from the ignition port, so that the retention time of the high-temperature air flow is prolonged, and the balance of the heating efficiency of the front space and the rear space in the combustion bin is realized; and equipment loss caused by local high temperature is reduced.

The present invention relates to a system and a method for automatically setting a main steam condensate drain valve closing setpoint of a nuclear power plant, and, specifically, to a system and a method for automatically setting a main steam condensate drain valve closing setpoint of a nuclear power plant, which apply different setpoints to respective condensate drain valves since the pressure of main steam and a condenser of a nuclear power plant varies according to operating conditions such as turbine output, and the discharge speeds of the condensate vary according to the different installation positions of condensate drain valves.

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 utility model relates to the technical field of steam generators, and discloses an anti-explosion electric heating steam generator which is characterized in that a water inlet device, an electromagnetic valve A, a magnetic levitation ball liquid level meter, a signal conversion module and other structures are arranged to achieve automatic water supplementing and water plugging operation on a water source in a heating cavity, a water supplementing pipe is communicated with an external water source, and the water source is automatically plugged by opening the electromagnetic valve A; the liquid storage tank and the connecting pipe supply water into the heating cavity, due to the fact that the floating ball is light in weight and can float on the water surface, when the position of the floating ball reaches the position set by a user, the signal conversion module converts an electric signal generated in the guide rod and outputs the electric signal to the electromagnetic valve A, the electromagnetic valve A is closed after receiving the signal, and sealing water plugging is achieved. And the effects of automatic water replenishing and sealing water plugging are achieved.

An electricity generation system including an electricity generating plant with a turbine, a dynamo and a solar power plant having an absorber tube for a parabolic trough solar power plant that includes a glass pipe which extends from a first end to a second end of a parabolic trough, a helical pipe enclosed within the glass pipe. A sand filled pipe is surrounded by the helical pipe. An inner pipe extends from the first end to the second end of the parabolic trough along the central axis of the glass pipe. A solenoid valve is configured to block the water from entering the inner pipe when the solenoid valve is closed and release the water to the inner pipe when the solenoid valve is opened. The turbine is fluidly connected to the solar power plant to receive the steam and produce mechanical energy which rotates the dynamo.

The utility model discloses a continuous drainage device with a flash steam recovery function, and relates to the technical field of flash steam recovery. The device comprises a shell, a flash steam recovery assembly and a waste heat utilization assembly, a partition plate is fixedly connected between the two sides of an inner cavity of the shell, a drain valve is fixedly connected to the top of the partition plate, the flash steam recovery assembly comprises a temporary storage tank, and the left side of the temporary storage tank is communicated with a water outlet of the drain valve. According to the utility model, through the flash steam recovery assembly, condensate water is temporarily stored by using the temporary storage tank and conveyed to the flash tank, the condensate water is depressurized through the flash tank to separate flash steam, and then the flash steam is conveyed to the steam compressor through the steam compressor air supply pipe to be pressurized; the steam can enter a heating system again to be recycled, heat waste caused by direct discharge of the steam is reduced, meanwhile, formation of a local high-humidity environment is avoided, the risk that oxidation corrosion of a pipeline and a supporting structure is accelerated due to the humid environment is reduced, and the service life of equipment is prolonged.

The invention discloses a high-sulfur high-humidity flue gas waste heat boiler anti-corrosion adjusting method adaptive to an activated carbon production line, and the method comprises the steps: collecting flue gas whole-process temperature data in real time through multi-point temperature monitoring, and automatically adjusting the opening and closing degree and water supply flow of a flue gas valve by a DCS control module based on a preset acid dew point threshold value; flue gas flowing paths are flexibly switched, the commissioning state of the economizer is controlled, it is ensured that the boiler exhaust gas temperature is not lower than the acid dew point + 30 DEG C, and formation of acid condensate is inhibited from the source. Meanwhile, the method prolongs the service life of the waste heat boiler, guarantees stable operation of a production line, and is suitable for a high-sulfur and high-humidity flue gas treatment scene of a rotary kiln type activated carbon production process.

The invention relates to a method and a system for increasing the water temperature of a boiler, which solve the problem that no steam source can be used for a third high-pressure heater when a third steam turbine generator unit is in low load or stops running through a steam source pipeline provided with a first connecting pipeline, ensure the continuous and stable operation of the third high-pressure heater, and improve the water temperature of the boiler. It is ensured that the water temperature of the third boiler is maintained at a design value of 150 DEG C, and the adverse effect of low-temperature water on safe and economical operation of a unit is avoided; surplus exhaust steam of the second steam turbine generator unit is fully utilized as a supplementary steam source, extra energy consumption is not needed, and the overall energy consumption of the unit is reduced; meanwhile, the heat exchange efficiency of the third high-pressure heater is guaranteed, the steam production cost of the third boiler is further reduced, the operation benefits of a thermal power plant are improved, and the economical efficiency is excellent.

This invention provides a drum level control device, a power plant, a drum level control method, and a drum level control program that can improve the controllability of the drum level. [Solution] In a power plant having a boiler and a drum for storing drum water used to cool the boiler, a drum level control device 50 for controlling the drum level, which is the water level in the drum, comprises: an acquisition unit 51 for acquiring the value of the requested generator output (MWD); a calculation unit 52 for calculating the main steam flow rate of the boiler based on the value of the requested generator output; and a correction unit 53 for deriving a lead correction signal based on the main steam flow rate and correcting the drum level control value, which is the control target value of the drum level, using the lead correction signal.

The embodiment of the invention discloses a control method and device for the liquid level of a multi-mode boiler drum. The control method comprises the steps that the current steam flow value and the current water supply flow value of a target boiler drum are obtained; based on the current steam flow value, determining a current steam flow measurement state of the target boiler drum by utilizing a steam flow theoretical value linear function; determining a current water flow measurement state of the target boiler drum by using a water flow theoretical value linear function based on the current feed water flow value; determining a control algorithm selection variable based on the current steam flow measurement state and the current water flow measurement state; determining a corresponding preset control algorithm based on the control algorithm selection variable; and regulating and controlling the liquid level of the target boiler drum by using the valve position variable quantity of the feed water flow determined by a preset control algorithm. The technical problem that in the prior art, a traditional three-impulse control method cannot accurately control the liquid level of the boiler drum is solved.

This invention discloses a method, system, and device for controlling the water level of a steam generator based on digital twin technology. The method acquires real-time detection information from sensors and outputs the actual measured water level to a water level regulator to obtain the feedwater flow rate adjustment amount. The detection information is then analyzed using a real-time online thermal balance model to obtain the analysis result. This analysis result, along with the feedwater flow rate adjustment amount, is output to a first flow regulator, which in turn outputs a corresponding control command to the feedwater regulating valve to adjust the feedwater flow rate. This control method, utilizing digital twin technology and numerical simulation technology, improves the water level control process to achieve accurate regulation, thereby enhancing the operational reliability, equipment safety, ease of operation, and operational efficiency of the nuclear power plant steam generator.

The boiler water supply sampling system comprises a primary cooler, the top of a cooler body is connected with one end of a three-way sampling pipe through a flange, and the other two ends of the three-way sampling pipe are connected with a water supply pump and a pressure gauge respectively and used for inputting high-temperature sampling water; the cooler main body is spirally provided with a cooling coil, and the cooling coil vertically extends downwards from the top wall of the cooler main body to the bottom of the cooler main body and then spirally ascends; the secondary temperature and pressure reducer comprises a U-shaped pipe communicated with an outlet of the cooling coil; the U-shaped pipe is sequentially connected in series with the needle valve and the circulating groove; a water inlet of the online pH monitor is connected with an outlet of the circulation tank, and a monitoring signal is accessed to the automatic dosing control system; sampling of the high-temperature boiler feed water on-line pH detector is achieved, the whole system from the sampling opening to the detector is closed in detection, free of pollution and high in precision, real-time accurate monitoring and automatic adjustment of the feed water pH value are achieved, and monitoring signals are monitored in real time.

The utility model relates to a thermal load excess adjusting system of a conversion device. The thermal load excess adjusting system comprises a thermal desalted water heat exchanger, a circulating water feeding branch pipe, a circulating water returning branch pipe, a thermal desalted water feeding branch pipe and a thermal desalted water returning branch pipe, the water inlet end of the hot desalted water feeding branch pipe is connected to the middle of the hot desalted water header pipe, and the water outlet end of the hot desalted water feeding branch pipe is connected to the hot desalted water inlet end of the hot desalted water heat exchanger. The water inlet end of the hot desalted water return branch pipe is connected to the hot desalted water outlet end of the hot desalted water heat exchanger, and the water outlet end of the hot desalted water return branch pipe is connected to the middle of the cold desalted water header pipe. Hot desalted water is led to the shell pass of the hot desalted water heat exchanger through the hot desalted water feeding branch pipe to be subjected to heat exchange and cooling with circulating water, and the cooled desalted water is sent back to the cold desalted water return main pipe to be used for follow-up circulating cooling. The system can timely adjust the surplus thermal desalting water amount according to the thermal load surplus condition, and full-load operation of a chemical system is ensured.

This application relates to a one-button start-up device and method for a large natural gas boiler, belonging to the field of power plant automation control, to solve the problems of weak coordination among boiler systems and low level of start-up automation in existing technologies. The method includes: the DCS control platform sequentially triggers the steam-water, air-flue gas, combustion, and steam temperature control systems to start according to the process; each control system feeds back signals after completing its operation; finally, the DCS enters a load adjustment mode to automatically match the feedwater, fuel, and air volume. This application achieves fully automated boiler start-up through serial triggering feedback and closed-loop control, improving system coordination and start-up stability, and solving the problems of traditional reliance on manual operation and asynchronous parameter adjustments.

A steam generator includes a water tank configured to store water, a heat element coupled to the water tank and configured to heat the water in the water tank to produce steam, at least one sensor configured to detect a water level associated with the water tank, a valve configured to supply water to the water tank, and a controller configured to operate the valve to manage the water level in response to the detected water level and at least one variable time period.

The present invention belongs to the field of thermal power generation control technology and specifically discloses a method for automatically controlling the tripping of a high-pressure heater drain pump of a thermal power unit, comprising: step 1, gradually reducing the coal quantity of the thermal power unit at a preset first rate, and causing the thermal power unit to operate at sliding pressure in a turbine tracking mode; step 2, obtaining the real-time coal quantity of the thermal power unit, and regulating the total air volume and primary air pressure according to the real-time coal quantity, while regulating the preset lockout time of the boiler core equipment of the thermal power unit and the number of operations of the control powder system; step 3, regulating the feedwater flow of the feedwater pump, the pressure of the condensate pump, the main steam parameters of the turbine, and the liquid level of the final high-pressure heater; step 4, judging in real time whether the unit load, feedwater flow, main steam parameters, and the liquid level of the final high-pressure heater meet the control termination conditions; if not, repeating steps 2 to 4. The method of the present invention can significantly reduce the number of unplanned outages and greatly improve the operational reliability and safety of the thermal power unit.