684 results about "Boiler water" patented technology

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 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 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 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 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 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 discloses a metal sintering filter and an online cleaning method, the filter comprises a cylinder body, a cylinder cover, a metal sintering filter core and an ultrasonic cleaning device, the cylinder cover and the cylinder body are detachably connected through a bolt, and a sealing structure is arranged between the cylinder cover and the cylinder body; an annular ultrasonic probe is installed at a flange connector in the middle of the inner wall of the barrel through a connecting part, the probe extends into the barrel and surrounds the metal sintering filter element, and all-directional cleaning is achieved by means of the penetrating power of ultrasonic waves. The online cleaning method sequentially comprises the steps of emptying and isolating, reverse blowing of inert gas to remove large particles, acid chemical cleaning and ultrasonic deep cleaning cooperative treatment, boiler water rinsing and neutralizing and drying and resetting. Online efficient decontamination can be completed without disassembling the filter element, the filtering performance of the filter element can be effectively recovered, operation is convenient, stability is high, and the filter element can be widely applied to various filtering scenes needing frequent cleaning.

The invention relates to a straw combustion boiler and a straw combustion heating system. The boiler comprises a combustion chamber and an ash pool, a water fire grate is fixedly arranged between the combustion chamber and the ash pool, a first double-layer plate water-cooled wall is arranged on the outer side of the combustion chamber and on a boiler arch, one end of the water fire grate is communicated with a water return port of the boiler, the other end of the water fire grate is communicated with the first double-layer plate water-cooled wall, a primary air supply pipe is arranged below the water fire grate, and a secondary air supply pipe is arranged on the side wall of the combustion chamber. The heating system comprises a boiler, a water tank, a water supply drum and a water return drum, the water tank is connected with a water inlet of the boiler through a water pipe, a smoke outlet of the boiler is connected with the water supply drum, the water supply drum is connected with a smoke inlet of the water return drum, and the water return drum is connected with a chimney; a water outlet of the boiler is connected with a water inlet of the water supply boiler barrel, a water outlet of the water supply boiler barrel supplies water to users, user return water is connected with the water return boiler barrel through a water return pipe, and the water return boiler barrel is connected with the boiler. The straw combustion efficiency is high, coal can be replaced, and the condition of the same room temperature is achieved.

The invention provides an automatic online cleaning method for a chemical filter, which comprises the following steps of: when a controller meets a triggering condition, closing a filter inlet valve and a filter outlet valve, and opening a residual material emptying valve and a top exhaust valve until residual materials are emptied; the triggering condition comprises that the controller monitors that the reading of the differential pressure gauge reaches a preset first differential pressure threshold value; closing the residue discharge valve, opening a water valve of the boiler to inject cleaning water into the filter through a flushing spray head, and after the reading of the liquid level meter reaches a preset height, opening a steam valve to introduce steam into the cleaning water to carry out bubbling stirring and heating until the reading of the thermometer reaches a preset temperature; and emptying the waste liquid, re-injecting the material into the filter, and closing the top exhaust valve and the filter inlet valve after the filter is full, so that the filter is recovered to a standby state. Full-automatic, intelligent and high-efficiency online cleaning of chemical filters, especially filters used in a butyl acrylate production process, is realized.

The utility model relates to a boiler water-cooled wall maintenance robot and system.The boiler water-cooled wall maintenance robot comprises a robot body and a magnetic attraction module arranged on the robot body, and supporting wheels of the robot body at least can provide ascending driving force for the robot body under the first preset working condition; the robot body is connected with the hoisting device through a rope, and the hoisting device is used for providing ascending driving force for the robot body under the second preset working condition. According to the boiler water-cooled wall maintenance robot, the lifting driving force can be provided through the supporting wheels, the lifting driving force can also be provided through the hoisting device, and the situation that when the robot body is in the second preset working condition, the robot body falls off due to insufficient magnetic attraction force between the magnetic attraction module and the boiler water-cooled wall is avoided; and the reliability of the robot main body climbing on the boiler water-cooled wall is improved.

The application discloses a flue gas heat energy and condensate water utilization system, which comprises a boiler, a flue gas cooling device, and a deoxygenated water tank. The flue gas generated by the boiler combustion enters the flue gas cooling device through a first flue for cooling. The flue gas exchanges heat with the water in the condensate water tank, the water in the condensate water tank is heated, the flue gas is cooled, and the cooled flue gas is discharged through a second flue. The condensate water formed in the flue gas cooling process falls into the condensate water tank. The water in the condensate water tank is deoxygenated by the deoxygenated water tank and then flows back to the boiler. The flue gas heat energy generated by the boiler combustion is utilized, the slightly acidic condensate water generated by the flue gas is mixed with the slightly alkaline softened water and the boiler water, the acidic condensate water and the alkaline softened water and the boiler water are subjected to acid-base neutralization reaction, the flue gas is used to heat the condensate water, and the like, so that the flue gas condensate water does not contain acidic gas, and thus the flue gas condensate water is slightly alkaline water suitable for the utilization of the boiler.

The invention discloses a thermal power plant water vapor quality monitoring method and system based on a multi-mode situation awareness technology, and relates to the technical field of thermal power plant water vapor quality monitoring, and the method comprises the following steps: deploying sensors at raw water, circulating water, demineralized water, condensed water, boiler water and steam of a thermal power plant based on a thermal power plant thermodynamic system design drawing; performing data acquisition on water vapor, packaging acquired data points into data frames, adding source addresses and timestamp information, and establishing a water vapor monitoring database for data recording; for equipment related to different water vapor collection positions in the current thermal power plant, equipment parameter adjustment values of historical equipment under the water vapor abnormal type event are collected, and a standard parameter adjustment value interval is calculated based on standard equipment to determine standard equipment adjustment parameters. According to the invention, by integrating historical data and real-time monitoring data, an equipment personalized compensation mechanism and an intelligent decision-making model are established, and accurate monitoring and efficient adjustment of water vapor abnormity are realized.

The utility model discloses a drip-proof boiler continuous blowdown device, which relates to the technical field of boiler blowdown and comprises a boiler drum and a sealing component, a continuous blowdown regulating valve is arranged in front of the boiler drum, and the sealing component is arranged on the surface of the continuous blowdown regulating valve. The sealing assembly comprises connecting flanges, a rear connecting pipe, a front connecting pipe, mounting bolts, a first sealing ring, a second sealing ring, a rubber sealing ring and fixing bolts, and the connecting flanges are arranged on the surfaces of the two sides of the lower end of the continuous row adjusting valve. According to the drip-proof boiler continuous blowdown device, the sealing performance of the adjusting valve of the device is greatly improved through the sealing assembly, the drip phenomenon is prevented, the adjusting valve can be rapidly disassembled and assembled, the adjusting valve with inner leakage is convenient to replace, drip caused by aging of the adjusting valve is avoided, continuous blowdown of a boiler can be achieved through the device through the blowdown assembly, and the service life of the boiler is prolonged. The salt content and alkalinity in the pot water are reduced, and the steam quality is prevented from being influenced by over-high concentration of the pot water.

An apparatus for steam reforming includes a reactor, a condensate separator, a condensate stripper, and a steam boiler. The reactor produces hydrogen and is connected to the condensate separator such that a gas mixture is conducted from the reactor into the condensate separator. The condensate separator and the condensate stripper are connected so that condensate separated out in the condensate separator is conducted into the condensate stripper. The condensate separator and the steam boiler are connected such that cleaned condensate can be conducted into the steam boiler. The steam boiler is connected to the reactor and to the condensate stripper in a steam-conducting manner. The boiler water feed line of the steam boiler is connectable to the condensate stripper in a liquid-conducting manner. A supply from the boiler water feed line is at a same location of the condensate stripper as a supply of the condensate from the condensate separator.

The present application relates to a special coating for water-cooled wall surface of coal-fired boiler, in particular to a coating for water-cooled wall surface of coal-fired boiler, a preparation method and application thereof. The coating comprises nano-tungsten powder, tungsten carbide, rare earth compound, sodium borate, potassium chromate, rock asphalt, binder, modifier, dispersant, defoaming agent, curing agent and solvent. The coating is fused on the water-cooled wall surface of coal-fired boiler, the obtained coating has good interface bonding with the water-cooled wall base material, low porosity, avoids the penetration of corrosive gas and liquid, solves the corrosion problem of water-cooled wall, and also avoids the reduction of coating hardness and wear resistance; the coating is not easy to wear and damage in long-term use, can improve the high-temperature resistance, hardness, corrosion resistance and wear resistance of the water-cooled wall surface of boiler, effectively prolongs the service life of the water-cooled wall surface of boiler, and further ensures the safe and stable operation of coal-fired boiler.

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 boiler water replenishing pretreatment device, and belongs to the technical field of boiler water replenishing treatment equipment. Comprising a water replenishing tank, a sterilization treatment unit, a multi-stage physical filtering unit and a deep treatment unit, the sterilization treatment unit comprises a bactericide adding module and a metering pump; the multi-stage physical filtering unit comprises a multi-medium filter, an activated carbon filter and a precision filter; the deep treatment unit comprises a high-pressure pump and a reverse osmosis membrane assembly; the multi-medium filter, the activated carbon filter, the precision filter, the high-pressure pump and the reverse osmosis membrane assembly are connected through a first pipeline, the water supplementing pool is connected with the multi-medium filter through a second pipeline, the bactericide adding module and the metering pump are connected into the second pipeline through a third pipeline, and a variable frequency water pump is arranged on the second pipeline; the boiler replenishment water pretreatment device can effectively sterilize raw water, remove suspended solids and residual hardness, avoid subsequent pollution of hollow fiber membranes, and improve the quality of boiler replenishment water.

The application discloses a flexible adjustable waste heat utilization hot water system and method for tail of waste heat boiler, which is suitable for the waste heat boiler configured by a gas-steam combined cycle unit, designs a combined application process route of the waste heat utilization hot water system for the tail of the waste heat boiler and a bromine cooling machine energy supply, utilizes existing condensate water, a condensate water heater and a boiler water supply system, circulates working medium through a hot water circulating pump, and realizes energy supply of the bromine cooling machine; the control mode in the system shutdown, startup and regulation stages is introduced, the working medium flow is regulated by frequency conversion and distribution regulation, the working medium temperature is regulated by low-temperature, medium-temperature and high-temperature three-stage temperature regulation, and the energy supply process of the waste heat utilization hot water system for the tail of the waste heat boiler can be flexibly adjusted.

The invention belongs to the technical field of boiler water-cooled wall monitoring, and particularly relates to a boiler water-cooled wall lower header expansion monitoring sensor arrangement method. Comprising the following steps: S1, determining the positions of expansion measuring points arranged on a lower header and a water wall tube seat; s2, when the expansion measuring points are arranged, temperature measuring points are arranged in areas nearby the expansion measuring points; the arrangement of the expansion measuring points is adjusted according to the distribution condition of the temperature field; s3, determining the type of the expansion monitoring sensor; s4, installing an expansion monitoring sensor at the selected position of the expansion measuring point; according to the arrangement method of the expansion monitoring sensors for the lower header of the water-cooled wall of the boiler, aiming at the current situation that displacement monitoring of the lower header of the water-cooled wall is lacked, comprehensive and real-time monitoring and dynamic early warning of the running state of the lower header of the water-cooled wall are achieved by adding the expansion monitoring sensors, and the accuracy and reliability of monitoring data are improved.