134results 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 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 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.

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.

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 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.

This invention relates to the field of condensate treatment technology and discloses an intelligent control method and system for condensate recovery and treatment units. The system includes: a monitoring component comprising a pressure transmitter, a temperature transmitter, and several steam traps; a collection chamber equipped with a low-pressure condensate inlet, a medium-pressure condensate inlet, a high-pressure condensate inlet, a safety valve, a pressure gauge assembly, a level riser, and several gate valves; a PLC control cabinet acquiring pressure data from the pressure transmitter, condensate temperature data from the temperature transmitter, filtration signals from the high-level filter, and ultrasonic leakage detection signals from the several steam traps; controlling the opening degree of several drain valves based on the filtration signals; and controlling the linkage of the steam regulating valve and the temperature regulating valve based on the pressure data and condensate temperature data. This invention solves the cavitation problem caused by space constraints, ensures the control accuracy of the drain valves, and improves the stability of the linkage control of the steam regulating valve and the temperature regulating valve.

The invention discloses a water supply method and system for a coal-fired power generation unit under a low-load working condition, and the method comprises the steps: collecting the operation state information of the coal-fired power generation unit in real time, judging whether the unit is in the low-load working condition, and starting a low-load water supply regulation mode if the current actual load is smaller than or equal to 40% of rated load; extracting main steam in a main steam pipeline as ejection steam, extracting a section of regenerative extraction steam with the highest pressure of a steam turbine as ejected steam, and mixing and boosting the ejection steam and the ejected steam to obtain mixed steam; the fed water is secondarily heated based on the mixed steam, and the fluctuation range of the water level of the boiler is controlled within + / -50 mm; and monitoring the load change of the unit in real time, and when the actual load of the unit is increased to more than 40% of the rated load, closing the low-load water supply regulation and control mode, and switching to the conventional water supply mode.

The present disclosure relates to a boiler recirculation system comprising: a boiler assembly; the deaerator comprises a water outlet and a water inlet; two ends of the water outlet pipeline are respectively connected with the water outlet and the boiler assembly; two ends of the recirculation main path are respectively connected with the water outlet pipeline and the water inlet; the recirculation branch is in bypass connection with the recirculation main path in an openable and closable mode, and when the target load of the boiler assembly is lower than a load threshold value, water in the water outlet pipeline can enter the deaerator through the recirculation branch; the two adjusting valves are arranged on the recycling main path and the recycling branch path respectively, each adjusting valve comprises a movable valve element, a valve seat and a guide cage, the valve seat and the guide cage are annularly arranged on the outer side of the valve element and connected with each other, and guide ribs protruding inwards are arranged on the inner side of the guide cage in the extending direction of the guide cage at intervals; a plurality of bosses corresponding to the guide ribs are arranged on the valve element at intervals. The damage rate of a recirculation regulating valve of a boiler assembly is reduced, and the efficiency of a generator set is improved.

The invention discloses a multi-loop injection feed water recycling energy recovery system and method for a nuclear power station. An outlet of a deaerator is communicated with a drainage medium inlet of a secondary ejector through an electric feed pump, an auxiliary steam input pipeline is communicated with an inlet of a primary ejector, and an outlet of the primary ejector is communicated with an inlet of the deaerator; a heat release side outlet of the high-pressure heater is divided into two paths, one path is communicated with an inlet of a second-stage ejector through an eighth valve group, the other path is communicated with an inlet of a deaerator through a drainage pump and a third valve group, an outlet of the drainage pump is communicated with the inlet of the second-stage ejector through a ninth valve group, an outlet of the second-stage ejector is communicated with the inlet of the deaerator, and an outlet of the second-stage ejector is communicated with the inlet of the deaerator. According to the system and the method, the high pressure of the recirculating fluid is used as power to eject the fluid with lower pressure, so that the pressure energy of the fluid is partially recovered, and the system and the method play an important role in energy conservation, consumption reduction and safety of the nuclear power station.

The utility model discloses a water sealing structure of steaming equipment, which relates to the technical field of steaming equipment, and is characterized by comprising a rack main body and a heat preservation cover, water storage tanks which are symmetrically distributed are arranged on the rack main body, an automatic water replenishing device which is communicated with the water storage tanks is arranged on one side of the rack main body, and the heat preservation cover is arranged on the other side of the rack main body. A cooling water collecting device is arranged on the upper surface of the heat preservation cover and connected with the water storage tank, and cooling water flows into the water storage tank. Sealing is conducted in a water sealing mode, so that steam can be introduced into water in the process of leaking to the outer side, cooling and condensation are achieved, the leaky steam can be cooled into water while the sealing performance is guaranteed, the situation that the temperature of the external environment rises, the steam is condensed through the cooling water collecting device and flows into the water storage tank can be effectively prevented, and the service life of the water storage tank is prolonged. Therefore, condensation of steam in the heat preservation cover can be effectively reduced, the influence on food is reduced, meanwhile, the steam is condensed and flows into the water storage tank, and cyclic utilization of the steam can be increased.

The application discloses a kind of coal-fired unit feed water pump cut, and the optimization method of parallel pump includes: based on distributed control system, sets up program-controlled operation logic, completes cut, and parallel pump logic design step sequence;Operation instruction module outputs cut, and parallel pump program-controlled operation instruction and judges whether it satisfies the preset allowable condition, when program-controlled operation allowable condition satisfies, operation instruction is sent out;Drive module outputs skip number and skip trigger pulse control program-controlled step sequence, step execution is completed feedback to drive module;Drive module according to predetermined step sequence outputs next skip number and skip trigger pulse, finally outputs instruction drive function group equipment start-stop.The application realizes feed water pump one-key automatic cut, and parallel pump through the optimization of logic, through the redesign of program-controlled step sequence, reduce step sequence, shorten program-controlled completion time, through the modification of logic configuration, reduce the work intensity of operating personnel, increase operation safety, stability and flexibility.

The utility model relates to the technical field of boiler water supply, in particular to a boiler water supply pressure stabilizing device which comprises a fixing seat and a boiler water supply pump, a carbon steel pressure stabilizing tank is fixedly connected to the inner wall face of the fixing seat, and a water inlet pipe is fixedly installed on the upper portion of the outer surface of the boiler water supply pump in a penetrating mode. An input pipe is fixedly installed in the middle of the right end of the boiler water feeding pump in a penetrating mode, the right end of the input pipe is fixedly connected with the lower portion of the left end of the carbon steel surge tank in a penetrating mode, a check valve is movably installed on the right portion of the outer surface of the input pipe in a penetrating mode, and a water feeding pressure stabilizing set is fixedly connected to the middle of the inner wall face of the carbon steel surge tank. According to the boiler water supply pressure stabilizing device, the carbon steel pressure stabilizing tank and the water supply pressure stabilizing set inside the carbon steel pressure stabilizing tank are arranged, water flow entering the device is buffered and adjusted in a multiple mode, the water flow is decelerated and dispersed in sequence, the flow direction of the water flow is changed, the water flow is more stable in the carbon steel pressure stabilizing tank, impact and fluctuation of the water flow are effectively reduced, and the service life of the water supply pressure stabilizing device is prolonged. Therefore, the pressure output to the boiler water supply pipe network is stabilized.

The application relates to a water supply flow control method and device of a thermal power generating unit and electronic equipment, wherein the method comprises the following steps: obtaining water supply flow data and equipment state data of a water supply system of the thermal power generating unit; calculating an estimated value of water supply flow of the water supply system based on the water supply flow data; calculating an equipment health index of the water supply system by using the equipment state data and the estimated value of the water supply flow; determining a defense protection action of the water supply system in combination with the equipment health index, the estimated value of the water supply flow and the equipment state data, so as to execute the defense protection action and adjust the actual water supply flow of the water supply system. Thus, the technical problem that, in the related art, the protection mechanism of the water supply system adjustment is single, the boiler main protection is triggered only when the water supply flow or the steam drum water level reaches a dangerous threshold, the non-planned shutdown of the unit is easily caused, and the working efficiency of the unit is affected, is solved.

A chemical mechanical polishing system includes a platen to support a polishing pad, a carrier head to hold a substrate in contact with the polishing pad, a motor to generate relative motion, a steam generator, and an arm extending over the platen with and at least one opening to deliver steam from the steam generator onto the polishing pad. The steam generator includes a canister, a barrier in the canister dividing the canister into a lower chamber having a water inlet and an upper chamber having a steam outlet, a heating element configured to apply heat to a portion of lower chamber, and a nucleation surface positioned in the lower chamber. The barrier has apertures for steam to pass from the lower chamber to the upper chamber and allows for condensation to pass from the upper chamber to the lower chamber.

A steam system configured to heat water, comprising: a heat exchanger configured to receive steam and water, configured to heat water with steam; a steam supply line configured to be connected to a steam source to supply steam to the heat exchanger; a condensate line configured to receive condensate from condensed steam from the heat exchanger and to guide the condensate out of the heat exchanger; a feed water line configured to supply water to the heat exchanger; a discharge line configured to receive heated water from the heat exchanger and to guide the heated water out of the heat exchanger; a steam valve positioned on the steam supply line and configured to control the flow of steam through the steam supply line; and a steam valve positioned on the condensate line and passing through the condensate line. A steam system comprising: a condensate valve configured to control the flow of condensate; a first sensor located downstream of the steam valve and upstream of the condensate valve, configured to output a pressure signal indicating the pressure between the steam valve and the condensate valve in the steam system; and / or a second sensor located at the condensate outlet, configured to output a condensate temperature signal indicating the temperature of the condensate between the heat exchanger and the condensate valve in the condensate line; a third sensor located on the discharge line, configured to output a water temperature signal indicating the temperature of the heated water passing through the discharge line; and a controller configured to control the opening and closing of the steam valve and the condensate valve based on the water temperature signal and at least one of the pressure signal and the condensate temperature signal.

The utility model discloses a steam generating device which comprises a heating pipe, a steam-water separation box arranged at the upper end of the heating pipe and a water inlet nozzle arranged at the lower end of the heating pipe. The steam-water separation box comprises a box body and a connecting pipe connected to the bottom of the box body; the connecting pipe is communicated with the heating pipe; the connecting pipe is provided with a high water level probe and a low water level probe which are arranged up and down at an interval; the box body is provided with an air outlet nozzle, at least one partition plate vertically extending downwards is arranged on the inner top wall of the box body, and the inner bottom face of the box body inclines downwards from the end close to the air outlet nozzle to the end close to the connecting pipe. A gap is formed between the partition plate and the inner bottom surface of the box body; the effect of fast steam output is achieved, the overall structure is simpler, the size is smaller, the manufacturing cost is lower, and steam is drier.