341results 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 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 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.

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 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.

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 invention relates to a thermal power plant boiler steam drain recovery system and method. The system comprises a drain recovery box group, a collection subsystem and a control subsystem, the drain water recycling box group is connected with an atmospheric flash tank water collecting tank through a first pipeline and connected with the condenser group through a second pipeline, and a drain water recycling box outlet electromagnetic valve and a flow control valve are arranged on the second pipeline; the output end of the acquisition subsystem is connected with the control subsystem and is used for acquiring liquid level information in a drain recovery box and vacuum air pressure information in a condenser; the control subsystem is used for controlling the electromagnetic valve and the flow control valve according to the liquid level information, fed back by the collecting subsystem, in the recycling box. Compared with the prior art, the method has the advantages of real-time control, high system operation stability and the like.

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 the field of molten salt energy storage, and discloses a molten salt heat pump energy storage system with a compression cycle, including: an electric heating component, which is used for the main heating components, and its energy sources include power supply during night valley hours, wind power supply, hydraulic power supply and solar power supply; a high-temperature molten salt tank, which is used for storing molten salt with an initial high temperature; a heat exchange component, which is used for transferring part of the heat of the high-temperature molten salt to the normal-temperature water; a low-temperature molten salt tank, which is used for storing the low-temperature molten salt after heat exchange; a water injection tank, which is used for storing the injected water source to support the input of external water sources and the output of internal water sources; the present invention can extract the low-temperature heat in the low-temperature molten salt tank, and together with the residual heat after participating in heat exchange with the high-temperature steam tank, dock it to a recompressor for recompression, convert it into medium-temperature steam, recycle the low-grade heat source, improve the utilization rate of low-grade heat energy, and prevent the waste of low-grade heat energy.

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 discloses a pump warming-up system of a natural circulation boiler, and belongs to the technical field of boiler auxiliary equipment. The pump front pipeline and the pump rear pipeline are respectively provided with a first valve and a second valve and are communicated with a downcomer and a coal economizer; the pump warming connection pipeline is provided with a third valve and is communicated with the lower part of the downcomer and an inlet of the coal economizer through a pipeline; the upstream of the second valve is communicated with the upstream of the third valve; the flow meter, the fourth valve and the adjusting valve are sequentially arranged. When the internal circulation pump is standby, the first valve is kept open, the third valve is kept closed, the fourth valve and the electric control valve are opened, the second valve is closed, and a working medium in the downcomer forms a bypass through the pump front pipeline, the internal circulation pump, the pump rear pipeline, the pump warming-up connection pipeline and the economizer recirculation pipeline and then forms a closed natural circulation loop with a boiler evaporation system. And the pump body is kept in a hot state and is consistent with the working medium in temperature during standby. The system is mainly used for keeping the internal circulation pump in a hot standby state in the natural circulation boiler and eliminating the risk of pump starting thermal shock.