857 results about "Boiler water" patented technology

The invention discloses a boiler state monitoring and predicting system based on artificial intelligence, and relates to the technical field of state monitoring. The system comprises a data acquisition part, a combustion stability analysis part, a hydrodynamic instability risk assessment part, a steam drum water level fluctuation prediction part and a fault probability and service life assessment part. The data acquisition part is used for acquiring boiler operation data and water circulation data; the combustion stability evaluation part is used for calculating a thermodynamic efficiency index; the combustion stability analysis part is used for calculating a combustion stability coefficient; the hydrodynamic instability risk assessment part is used for calculating a hydrodynamic instability risk index; the steam drum water level fluctuation prediction part is used for calculating and predicting steam drum water level fluctuation; and the fault probability and service life evaluation part is used for evaluating the fault probability and the residual service life of the boiler. According to the invention, the comprehensiveness, accuracy and predictability of boiler operation state monitoring are obviously improved.

The embodiment of the invention provides a method, a system and equipment for predicting the corrosion rate of a water wall tube of a boiler and a storage medium. The method comprises the following steps: acquiring corrosion related parameters of the water wall tube, including electrochemical noise, surface strain, medium components and temperature and humidity; performing space-time alignment and fusion processing on the corrosion related parameters to obtain a corrosion state feature matrix; inputting the corrosion state characteristic matrix into a pre-established physical characteristic extraction model, and dynamically predicting the corrosion rate of the water wall tube by adopting a space-time dual-channel network; wherein the physical feature extraction model is pre-established through a physical information neural network, and the space-time dual-channel network comprises a long short-term memory network, a graph convolutional network and a sliding window. According to the embodiment of the invention, various factors influencing corrosion are comprehensively considered, the physical information neural network is introduced to carry out deep autonomous learning, finally, a reliable corrosion rate prediction condition is provided, and dynamic, lasting, intelligent and flexible corrosion state monitoring and prediction of the boiler water wall tube are realized.

The invention provides a power plant boiler water cooling wall scaling intelligent prediction and cleaning method and system, and relates to the technical field of scaling prediction and cleaning, and the method comprises the steps: collecting operation parameters to construct a time sequence data matrix, extracting features to determine a scaling detection area, obtaining three-dimensional point cloud data, calculating scaling thickness distribution, and determining a to-be-cleaned area; and grid division is carried out on the cleaning area, a traversal sequence is optimized, and a collision-free cleaning track is generated. Precise identification and intelligent cleaning of the scaling area are achieved, the cleaning efficiency is improved, energy consumption is reduced, and the service life of the water cooling wall is prolonged.

The utility model discloses a dosing device for boiler water treatment, which comprises a bottom plate, a medicine cylinder is fixedly mounted at the top of the bottom plate, a cover plate is fixedly mounted at the top of the medicine cylinder, square tubes are fixedly mounted on two sides of the top of the cover plate, strip-shaped grooves are formed in two ends of each square tube, and the strip-shaped grooves are communicated with the bottom plate. Springs are fixedly installed at the bottom ends of the interiors of the square pipes at equal intervals, movable plates are movably installed in the strip-shaped grooves, and vertical plates located in the square pipes are fixedly installed between the movable plates. According to the chemical adding device for boiler water treatment, in the daily use process, an operator starts a rotating motor, the rotating motor operates to enable a rotating shaft and a cam to rotate, then the outer surface of the cam touches the top of a carrying plate every time the outer surface of the cam rotates by a circle, and at the moment, the carrying plate drives a vertical plate to slide in a square pipe; and then, the vertical plate can drive the moving plate to slide in the strip-shaped groove, and meanwhile, the vertical plate can compress the spring.

The invention relates to the technical field of electrical performance testing, in particular to a power station auxiliary machine fault diagnosis method and system oriented to a smart factory, and the method comprises the steps: obtaining a current sequence, a power sequence and a vibration sequence of a boiler feed pump; equally dividing the collection duration into a plurality of time periods, and determining the abnormal vibration value of the boiler feed pump in each time period; determining trend noise significance of the power sequence and the current sequence in each time period; determining a current power influence value of each time period based on the trend noise significance, the correlation between the current sequence and the power sequence in each time period and the distribution condition of power data; and based on the dispersion degree of the difference between the vibration abnormal value and the current power influence value and the distribution range of the vibration abnormal value, determining the load vibration difference of the boiler feed pump, and performing fault diagnosis on the boiler feed pump. The invention aims to improve the accuracy of fault diagnosis of the boiler feed pump.

The invention relates to the technical field of control regulation, in particular to a supercritical unit variable load rate dynamic compensation control method, which comprises the following steps: acquiring unit operation data, performing credibility restoration, and outputting a credible parameter set; a time sequence mapping table is constructed based on the credible data, and boiler heat storage lag time, steam turbine control valve delay and a steam temperature interstage coupling coefficient are quantified; correcting the boiler water supply feedforward instruction by using the heat storage lag time to generate a compensated water supply instruction; according to the time sequence mapping table and the main steam pressure change rate, a multi-genetic algorithm is adopted to optimize a control valve constraint rule, and a dynamically constrained control valve action instruction is generated; an inter-stage coupling coefficient is called to generate a swing angle compensation amount, and water spraying temperature reduction disturbance is blocked; safety locking parameters are monitored to trigger buffering intervention in a grading mode, and compensation instructions are integrated to implement cooperative correction. The problem of out-of-step response of multiple execution units under the variable load working condition is solved, and the unit adjusting rate and the control stability are remarkably optimized.

The invention relates to a method and device for evaluating the rapid load changing capacity of a coal-fired unit, and the method comprises the steps: firstly, building a coal-fired unit dynamic model which comprises a coal pulverizing system, a boiler and a steam turbine through historical operation data, and determining model parameters based on the operation characteristics of an actual unit; secondly, main steam pressure and power instructions of different load sections are set according to the sliding pressure curve, a variable load capacity test is carried out by adopting a method of increasing the load increasing rate, and meanwhile, the coal feeding amount, the boiler water feeding amount and the adjusting range and the changing rate of a main steam valve are restrained; finally, dynamic changes of key parameters such as main steam pressure and steam-water separator outlet temperature in the variable load process are analyzed, and the actual average load rising rate of the unit is evaluated. According to the invention, the variable load capability of the unit in different load intervals can be accurately evaluated. Therefore, the problems that in the prior art, the load changing capacity of a unit in different load intervals is difficult to accurately evaluate, and the stabilization of new energy power generation fluctuation and the stability of power grid frequency are greatly influenced are solved.

The present invention relates to a preparation method of a self-propagating anti-corrosion and wear-resistant coating for a boiler water wall, belonging to the technical field of high-temperature protective coatings. The preparation steps are as follows: (1) Aluminum powder, iron(III) oxide powder, chromium oxide powder, zirconia fine powder, alumina fiber, heat-conducting filler and flux are ball-milled and mixed to obtain a mixed powder; (2) The mixed powder and sodium silicate binder are mixed evenly to obtain a suspension slurry; (3) The surface of the boiler water wall is treated by sandblasting; (4) A precoating is made on the surface of the boiler water wall; (5) A sodium silicate layer is made on the precoating; (6) A magnesium strip is ignited to initiate a self-propagating reaction to obtain a protective layer; (7) The protective layer is removed to obtain a self-propagating anti-corrosion and wear-resistant coating on the surface of the boiler water wall. The sodium silicate used as the binder obtains a dense self-propagating anti-corrosion and wear-resistant coating, and the self-propagating anti-corrosion and wear-resistant coating has good thermal conductivity, uniform thickness, excellent mechanical wear resistance and good corrosion resistance.

The utility model is suitable for the technical field of boiler liquid medicine adding equipment, and particularly relates to an intelligent boiler liquid medicine adding device which comprises a supporting base, a medicine dissolving box and a boiler are arranged on the surface of the supporting base, a boiler water discharging pipeline is arranged on the side face of the boiler, and an intelligent controller is installed on the surface of the medicine dissolving box. A stirrer is arranged on the surface of the medicine dissolving box; and a metering pump is mounted on the surface of the supporting base. Through close cooperation among the intelligent controller, the metering pump and the on-line water quality monitor, the device can realize intelligent and automatic boiler dosing management. Compared with a traditional boiler dosing system, the boiler dosing system has the advantages that the defects of inaccurate manual operation, long reaction time, waste of chemicals and the like are effectively overcome, the dosing precision and the reaction speed are improved, the waste of the chemicals is reduced, the operation cost is reduced, and intelligent management of boiler water treatment is realized.

The invention provides boiler water-cooled wall mechanical cutting equipment and a using method.The equipment comprises a cutting support, a carrying component is arranged at the bottom of the cutting support, pipeline walking components used for binding the cutting support to a water-cooled wall pipe are arranged at the two ends of the cutting support, and a cutting sliding seat is arranged at the upper end of the cutting support in a sliding mode; a cutting component used for cutting a pipeline is arranged at the upper end of the cutting sliding seat, the cutting sliding seat is connected with a position adjusting component used for driving the cutting position of the cutting sliding seat to be adjusted, and a clamping and transferring component used for transferring the cut-off pipeline is further arranged at the upper end of the cutting sliding seat. A material carrying frame is fixedly arranged on the other side, opposite to the cutting component, of the cutting sliding base. The device is designed according to existing needs, power is provided for walking of the device in a holding mode, the safety of the device is improved by means of self-shrinkage of thread transmission, in addition, a cut pipe body can be stored, the problem that objects fall from high altitudes is solved, and the cutting safety is further improved.

The invention discloses a surface-to-point boiler water-cooled wall leakage positioning method based on acoustic signals, which comprises the following steps: respectively and symmetrically distributing sound wave receiver matrix position points on four wall surfaces of a boiler water-cooled wall, establishing a first coordinate system, and installing a sound wave receiver on each sound wave receiver matrix position; the positioning method comprises the following steps: acquiring real-time sound information of sound wave receiver matrix position points through sound wave receivers, calculating the real-time sound information of each wall surface, calculating RMS values of the sound wave receivers, sequencing, determining the leaked wall surface and the position of the corresponding sound wave receiver on the wall surface according to the maximum RMS value, and determining the position of the leaked wall surface according to the position of the corresponding sound wave receiver. And establishing a planar two-dimensional second coordinate system, at least acquiring second coordinates of the sound wave receivers corresponding to the second and third large RMS values in the wall surface in the second coordinate system, and calculating a corresponding relation of the second coordinates of the corresponding sound wave receivers to obtain second coordinates of the leakage point. And rapid and accurate spatial positioning of leakage points is realized.

The embodiment of the invention relates to the technical field of boiler equipment, and provides a steam boiler real water level identification method and a related device, and the method comprises the steps: obtaining boiler steam temperature data and pressure data; determining a first boiler working state of the steam boiler according to the temperature data and the pressure data; if the first boiler working state is that a boiler burner is started or the power is changed, boiler water level image data are obtained; the real water level of the steam boiler is recognized according to the boiler water level image data, the recognition result of the real water level of the steam boiler is obtained, the working state that a boiler burner of the steam boiler is started or power changes can be recognized according to the temperature data and the pressure data in the boiler, and then the real water level of the steam boiler is recognized according to the boiler water level image data. The real water level of the steam boiler is identified, the false alarm probability of the false water level of a traditional water level gauge of the steam boiler is reduced, and the production efficiency is improved.

The invention relates to the field of electrical digital data processing, in particular to a boiler atmosphere field state monitoring method, which comprises the following steps: collecting concentration data of combustible gases in a boiler water wall area through measuring equipment, carrying out space-time calibration on the concentration data of multiple measuring points, constructing a data processing model based on a graph convolutional network, and training the data processing model. Obtaining a trained data processing model; the method comprises the following steps: collecting concentration data of each combustible gas in a boiler water-cooled wall area through measuring equipment to obtain new multi-measuring-point concentration data; and after the steps are executed, inputting the data into a trained data processing model to obtain a combustible gas predicted concentration matrix of each measuring point at a future moment, continuously monitoring the combustible gas predicted concentration matrix of each measuring point at the future moment, and when the predicted concentration of any measuring point exceeds a safety threshold value, triggering an early warning signal and positioning a high-risk area. An existing boiler atmosphere field state monitoring method has the problem of low prediction credibility, and the method provided by the invention is high in prediction credibility.

The invention relates to a boiler flue gas heat recovery system which comprises a heat supply device, the heat supply device comprises a boiler and a heat supply pipeline, the heat supply pipeline comprises a boiler water inlet pipe and a boiler water outlet pipe which communicate with the boiler, a flue is formed in a smoke exhaust device, and a first heat exchanger and a second heat exchanger are sequentially arranged in the flue in the flue gas flowing direction; the first waste heat recovery device comprises a first waste heat recovery flow path and a heat pump, the first waste heat recovery flow path is connected with the first heat exchanger and a boiler water inlet pipe, the heat pump is arranged on the first waste heat recovery flow path, the second waste heat recovery device comprises a second waste heat recovery flow path, and the second waste heat recovery flow path communicates with external air and a boiler. By arranging the heat pump, on one hand, the heat transfer temperature difference can be increased, smoke sensible heat and even part of latent heat can be efficiently recycled, on the other hand, the recycled heat can be flexibly adjusted according to changes of boiler loads, and therefore the system can adapt to changes of loads output by the system under different conditions.

The invention discloses a full-automatic water cooling wall cutting robot, and relates to the technical field of robots. The detection unit is arranged on the mounting part, the cutting unit is arranged below the mounting part, the supporting parts are arranged on the two sides of the mounting part, and the marking unit is arranged above the mounting part and connected to the supporting parts. By arranging the detection unit, the marking unit and the cutting unit, detection marking of the defect position in the water cooling wall and cutting of the marked defect position are achieved, and the problem that an existing robot cannot automatically cut a boiler water cooling wall pipeline with defects is solved.

The invention discloses an integrated hydraulic turbine furnace water circulating pump and a starting and stopping method. The furnace water circulating pump is sequentially divided into a hydraulic turbine unit, a first water chamber unit, a furnace water pump unit, a second water chamber unit and an axial force balancing unit according to functions. By designing a unique main and auxiliary channel water inlet structure, the problem of water sealing of a high-temperature and high-pressure furnace in a conventional shaft seal pump is solved, the working environment of each sealing element is greatly improved, the service life is prolonged, and meanwhile, the inner core can be integrally pulled out for replacement and is convenient to overhaul. On the basis, a step-by-step pre-heating and rapid shutdown method is further designed, the reliability under frequent start and shutdown is improved, the service life is prolonged, the start and shutdown process is further deeply fused into the deep peak regulation process of the supercritical boiler, the feed water flow of the supercritical boiler can be rapidly recovered after a hydraulic turbine boiler water circulating pump exits due to an accident, and the service life of the supercritical boiler is prolonged. And the fault of water cut-off and shutdown is avoided. Meanwhile, the recycling function of a steam feed pump set can be replaced, and the reliability of a water supply system is improved.

The utility model discloses energy-saving and environment-friendly heating equipment, and particularly relates to the technical field of heating equipment, the energy-saving and environment-friendly heating equipment comprises a heating boiler, one side of the heating boiler is fixedly connected with a boiler water inlet pipe, the other side of the heating boiler is fixedly connected with a waste gas exhaust pipe, and one end of the waste gas exhaust pipe is provided with a waste gas heat exchange mechanism; the waste gas heat exchange mechanism comprises a waste gas treatment box which is fixedly installed on the top of the heating boiler, and a heat exchange pipe is installed in the waste gas treatment box. The waste gas heat exchange mechanism is arranged, heat in high-temperature waste gas generated by the heating boiler is recycled through the waste gas heat exchange mechanism, the energy utilization efficiency is improved, energy waste is reduced, the recycled heat is used for heating water and can be reused or enter other heating links, the requirement for traditional energy is further lowered, and the energy utilization rate is increased. Waste gas can be circulated, heat recovery is more thorough, total heat supply of the heating system is increased, the heating efficiency is improved, and using is more energy-saving and environment-friendly.

The embodiment of the invention provides a multi-dimensional detection method and system for steam-water pollution, and the method comprises the steps: setting sampling points at target positions of condensed water, feed water, boiler water and a steam system, and detecting sampling parameters at the sampling points; identifying a water quality abnormal signal based on the sampling parameter and a preset threshold value of the water quality index; associating the water quality abnormal signal with target equipment and carrying out chemical analysis so as to position a pollution source; monitoring the thermotechnical state of the target equipment in real time, collecting thermotechnical parameters, and establishing a linkage model of the thermotechnical parameters and the water quality indexes to identify the influence of abnormal working conditions on the water quality; according to the influence result of the abnormal working condition on the water quality, the water delivery module, the shaft seal module and the dosing module are subjected to sealing performance test and purity detection so as to identify hidden source abnormal signals; and performing multi-dimensional analysis on the water quality abnormal signal, the pollution source, the abnormal working condition and the hidden source abnormal signal, and building a fault tree to generate a pollution source priority list and dynamically adjust a pollution discharge strategy.

The invention relates to the technical field of energy storage assisted thermal power generating unit frequency modulation, in particular to an intelligent thermal power and energy storage combined frequency modulation control system and method based on multi-mode switching, and the system comprises a telecontrol device, an intelligent thermal power and energy storage cooperative control system, a thermal power generating unit and an energy storage system. The telecontrol device sends an automatic power generation control instruction to the intelligent fire-storage cooperative control system and the thermal power generating unit, and according to different mode selection modes, the intelligent fire-storage cooperative control system obtains an energy storage power instruction and adjusts the output of an energy storage system by using an internally designed functional module; the thermal power generating unit obtains a unit load instruction and adjusts the output of the thermal power generating unit by utilizing an internally designed functional module, the combined output of the energy storage system and the thermal power generating unit responds to an automatic power generation control instruction, deep coupling and efficient control of the thermal power storage system are achieved, the long-term frequent and rapid frequency modulation pressure of the thermal power generating unit is relieved, and the over-temperature risk of a boiler water cooling wall is reduced. The comprehensive economy and safety of the fire storage system are improved, and the combined frequency modulation capacity of the fire storage system is improved to the maximum extent.

The invention belongs to the technical field of header state monitoring, and particularly relates to a boiler water-cooled wall lower header structure deformation monitoring system and method. Comprising an expansion acquisition module, a strain acquisition module and a temperature acquisition module, the expansion acquisition module is connected with an expansion processing module, the strain acquisition module is connected with a strain processing module, and the temperature acquisition module is connected with a temperature processing module. The expansion processing module, the strain processing module and the temperature processing module are all connected with an optical fiber switch, the optical fiber switch is connected with a server, an SIS system, a container stress calculation system and a storage system are arranged in the server, the SIS system comprises an early warning program, and the server is connected with a client. Stress and expansion information and temperature information of the lower header can be obtained in real time for a long time, the stress state of the header is obtained in real time, the health state of the header is intelligently judged, and an alarm is automatically given according to abnormal problems.

The utility model discloses a sampling device for industrial boiler water quality inspection, and relates to the technical field of industrial boiler water quality inspection. The device comprises a vehicle body, the top of the vehicle body is fixedly connected with a cooling water tank, a sampling assembly is arranged on the left of the cooling water tank, and a collecting assembly is arranged above the cooling water tank. According to the utility model, the sampling assembly is arranged, specifically, the suction head on the throwing hose is put into the boiler, the water pump is started to pump out boiler water and convey the boiler water into the shunting block, and a worker rotates the valve to control the opening direction of the shunting block, so that the sampled water flows into the shunting pipe on the left side or the shunting pipe on the right side; according to the boiler water sampling device, water in different boilers or water at different depths can be sampled into the other collecting tank after entering one collecting tank, so that different boiler water can be sampled at the same time, frequent and sequential sampling is not needed, and workers are prevented from staying in a boiler area for a long time.

The invention discloses a treatment system for power plant wastewater recovery, which comprises a softening pretreatment assembly for removing impurities in wastewater, a clarification tank for treating suspended matters, a clean water tank for storing clean water, a membrane concentration assembly communicated with the softening pretreatment assembly, and a water supply assembly communicated with the membrane concentration assembly. The device is used for further improving the filtering effect on the wastewater and comprises a multi-medium filter for filtering impurities and a reverse osmosis device for desalting the wastewater. The power plant wastewater treatment system has the beneficial effects that some solid impurities in power plant wastewater can be filtered through the softening pretreatment assembly, the crystallization phenomenon in an existing wastewater treatment system is greatly reduced, the treated wastewater can be further filtered through the membrane concentration assembly, salt in the wastewater can be concentrated and separated, the discharge amount of strong brine is reduced, and the treatment cost is reduced. In addition, reverse osmosis produced water and reverse osmosis concentrated water produced by the reverse osmosis device can be respectively supplemented for boiler water and desulfurization water, so that the recycling rate of wastewater is increased.

The invention relates to an adjustable double-flow water-cooled wall system, a once-through boiler and a generator set, the water-cooled wall system comprises a hearth water-cooled wall, an economizer and a shunting water-cooled wall device, and the shunting water-cooled wall device is provided with a shunting water-cooled wall inlet header and a shunting water-cooled wall outlet header; the shunt water-cooled wall inlet header is connected with a shunt water-cooled wall inlet pipeline, and the shunt water-cooled wall outlet header is connected with a shunt water-cooled wall outlet pipeline; the economizer outlet pipeline comprises a first branch pipeline and a second branch pipeline, the first branch pipeline is connected with the hearth water-cooled wall inlet pipeline, and the second branch pipeline is connected with the shunting water-cooled wall inlet pipeline. The system can greatly improve the hydrodynamic safety of the water cooling wall of the boiler in an ultra-low load interval, meanwhile, the flow resistance of the water cooling wall under full load is not increased, and the operation economical efficiency of the whole unit is not reduced.

The invention discloses a power station boiler water-cooled wall expansion state evaluation method, system, equipment and medium, and the method comprises the steps: arranging a plurality of groups of measuring points on a water-cooled wall, and enabling the measuring points to have different high standards on the water-cooled wall; the real-time thermal expansion amount of the water cooling wall is measured through each measuring point; for each group of measuring points, calculating the deformation discordance degree of the water-cooled wall under the same elevation according to the real-time thermal expansion amount of the water-cooled wall measured by each measuring point; the expansion state of the water cooling wall of the power station boiler is evaluated according to the deformation discordance degree of the water cooling wall under the same elevation. The method, the system, the equipment and the medium can meet real-time characterization of the expansion trend of the water cooling wall of the boiler and real-time evaluation of expansion data of the water cooling wall.

The invention provides a composite reagent adding control method and system based on boiler water treatment of a drum boiler and a medium. The method comprises the steps that boiler water parameter information is obtained, boiler water quality information is analyzed based on the boiler water parameter information, the boiler water quality information is analyzed based on a DCS distributed control system, and a reagent adding control strategy is output in real time. Controlling the operation parameters of the dosing pump and the flow of the composite agent based on the dosing control strategy; acquiring liquid level information of a dosing tank; generating composite medicament supplementing information based on the liquid level descending state information of the dosing tank, and supplementing the composite medicament in the dosing tank based on the composite medicament supplementing information; according to boiler water quality requirements, boiler water quality information is analyzed through a DCS (Distributed Control System), so that a dynamic dosing control strategy is generated, the dosing amount of a composite medicament is accurately controlled, the control precision is improved, and meanwhile, whether the composite medicament in a dosing tank meets requirements or not is analyzed in the dosing process, so that the composite medicament is quickly supplemented.

The utility model relates to a water-cooled fire grate which is provided with a pivot header, the pivot header is a long and thin pipe fitting and is suitable for penetrating through a water cooling wall of a boiler to be rotatably supported, so that the water-cooled fire grate can rotate around the pivot header to adjust the inclination angle, and a water inlet and a water outlet are respectively formed in the end parts of the two sides of the pivot header. The utility model further relates to a boiler comprising the fire grate, the two ends of the pivot header of the water-cooled fire grate extend to the outer sides of the two side wall water-cooled walls respectively and are rotatably supported by supporting pieces, and the pivot header is provided with a water inlet assembly and a water outlet assembly around the water inlet and the water outlet respectively. According to the water-cooled fire grate, the water-cooled fire grate is provided with the pivot header, so that the water-cooled fire grate can rotate greatly around the pivot header, and a large inclination angle can be adjusted. In addition, due to the fact that a water-cooling structure is used, the temperature of the whole water-cooling fire grate is greatly reduced compared with that of a non-water-cooling structure, adhesion and coking of fuel can be avoided, and parts are prevented from being damaged by high-temperature smoke.

The invention relates to the technical field of boiler temperature monitoring, in particular to a boiler water supply temperature prediction method based on a Bayesian optimization BP neural network, and the method comprises the steps: obtaining the operation parameter data and water supply temperature data of a gas boiler in a target time period; segmenting the target time period to obtain a plurality of time domain sub-segments, determining a dominant rule characterization value, and judging whether to mark the target time period according to the dominant rule characterization value; if the target time period is marked, constructing an initial BP neural network model; defining a hyper-parameter search space; constructing a proxy model by using a Gaussian process to obtain an optimal hyper-parameter combination; determining a Bayesian optimization BP neural network model based on the optimal hyper-parameter combination and the initial BP neural network model; and predicting the water supply temperature of the gas-fired boiler based on the Bayesian optimization BP neural network model. The model parameters can be updated, adjusted and optimized in real time, and the accuracy of predicting the water supply temperature of the gas boiler is improved.

The invention relates to the technical field of coal-fired boiler application, and particularly provides a boiler water-cooled wall system wear prediction optimization method, which comprises the following steps: carrying out gridding partitioning on a water-cooled wall system of a boiler to obtain a plurality of detection regions, and obtaining wear historical data corresponding to the plurality of detection regions respectively; constructing a wear prediction model based on the wear historical data, wherein the wear prediction model is used for representing a corresponding relationship between the wear historical data and monitoring operation parameters of a plurality of historical detection times in the wear historical data; based on the monitoring operation parameters, establishing a numerical simulation model of the water-cooled wall system, and generating wear evaluation data corresponding to the target wear area; and predicting the current wall thickness data of the target wear area by adopting the wear prediction model, and optimizing the monitoring operation parameters under the condition that the difference value between the wear evaluation data and the current wall thickness data is greater than the preset threshold value, so that the predicted wear can be continuously optimized under the condition of considering the monitoring operation parameters in the hearth, and the prediction accuracy is improved. Therefore, the wear prediction accuracy is improved.

The utility model relates to the technical field of desorption and deoxygenation devices, and specifically discloses a new desorption and deoxygenation device for boilers, including a tower body, wherein a stirring mechanism is arranged inside the tower body, one side of the tower body is fixedly connected to one end of a deoxygenation tower, an air intake mechanism is arranged inside the tower body and at the bottom end of the deoxygenation tower, and two supporting legs are fixedly installed on the bottom side of the tower body. Boiler water is transported to the inside of the tower body through a water inlet, and oxygen-free steam is transported to an air outlet box through an air inlet pipe. The air outlet box discharges steam from the boiler water below through an air outlet hole. Through the operation of a motor, the output shaft of the motor drives a rotating shaft connected at one end and a stirring ring mounted on the outer surface of the rotating shaft to fully stir and mix the oxygen-free steam and water, thereby accelerating the rapid release of oxygen in the boiler water. The desorbed oxygen is discharged through the air outlet. The device can fully mix the boiler water with the oxygen-free steam, thereby improving the overall deoxygenation effect of the boiler water.

The invention provides an all-position TIG (Tungsten Inert Gas) automatic welding method for an outer tube of a water-cooled wall of a boiler. The method comprises the following steps: acquiring a welding track of a pipeline; the welding track is sequentially divided into a flat welding section, a right vertical welding section and a left vertical welding section in the clockwise direction, the right vertical welding section and the left vertical welding section are symmetrically arranged along the center line of the welding track, and the right vertical welding section and the left vertical welding section are connected at the lowest point of the welding track; the welding trolley is controlled to move at a constant speed in the clockwise direction of the welding track; welding parameters including welding power, welding speed, wire feeding speed and shielding gas flow are adjusted according to the positions of the welding tractor on the right vertical welding section and the left vertical welding section, so that the molten pool generation speed is gradually reduced in the direction close to the lowest point. According to the method, the molten pool can be prevented from flowing down when the pipeline in the non-vertical state is welded, and the welding quality can be improved.