19 results about "Boiler control" patented technology

The application provides an electric water boiler control device, and relates to the technical field of equipment management. The electric water boiler control device comprises a power supply, a control mechanism and an electric water boiler connected in sequence. The control mechanism comprises a first circuit breaker connected with the power supply, a time control switch connected with an output end of the first circuit breaker, an alternating current contactor connected with a zero line end of the time control switch, and the alternating current contactor connected with the electric water boiler. The time control switch is used for closing a contact point when a current time is in a preset time period, controlling the alternating current contactor to be closed, and making the electric water boiler work under power. In this way, the problem that a traditional electric water boiler cannot be flexibly controlled to be opened and closed according to a user's work period, resulting in energy waste, can be solved.

The utility model provides a kind of electrode boiler electrode loss rate monitoring device with loss early warning function, including shell, data processing unit, early warning output unit and power module are arranged in shell, data processing unit is connected with several non-contact thickness detection probes, several non-contact thickness detection probes are distributed along the electrode rod axial length direction, and the distance between probe and electrode rod surface is 1mm-5mm;Non-contact thickness detection probe is fixed by mechanical clamp, the data processing unit is connected with early warning output unit, the early warning output unit is connected to boiler control system by industrial bus, and power module is connected with data processing unit and early warning output unit.The utility model can monitor the loss condition of electrode rod in real time, accurately, and timely issue early warning when loss reaches preset threshold, guarantee the safe and stable operation of electrode boiler.

The present application belongs to the field of boiler control, and particularly relates to an automatic baling biomass boiler fuel gasification coupling control method. The method comprises: extracting raw material activity index and dynamically adjusting baling machine parameters to produce customized fuel; collecting multi-modal data of a gasification furnace and a boiler in real time and constructing a data vector; using a gasification combustion digital twin to calculate the nonlinear coupling relationship between fuel properties and the data vector to generate an optimal operating parameter combination; and using a model predictive control algorithm to issue coordinated control instructions to the fuel forming, gasification, distribution and heat exchange whole chain. The present application realizes source compensation for raw material fluctuations and accurate mapping of dynamic characteristics through whole-process closed-loop control, improves the system comprehensive energy efficiency and load tracking rate, optimizes the safety and environmental performance, and improves the intelligent level of the biomass boiler system.

This invention provides a boiler control device, a power plant, a boiler control method, and a boiler control program that appropriately control the recirculation flow rate and make it usable as regulated power. [Solution] The boiler control device 50 has a switching unit 52 that switches between a once-through operation state and a circulating operation state, which has lower thermal efficiency than the once-through operation state, depending on the load. The switching unit 52 performs switching control to switch from the once-through operation state to the circulating operation state when the load falls below the first load, and when operating in the circulating operation state, it performs control to add a bias flow rate to the feedwater flow rate of the boiler so that the feedwater flow rate is appropriate to the boiler load.

This application discloses a method, apparatus, equipment, and medium for predicting drum water level based on a boiler control system, relating to the field of industrial automation control technology. The method includes: extracting time-series data to be processed and constructing variable features from the data; processing each variable feature using a preset causal relationship analysis tool to determine the lag time corresponding to several determined features; determining the features to be processed based on the lag time of the drum water level, and obtaining delayed variable features using preset delay rules; inputting each delayed variable feature and several target features into an initial drum water level prediction model to obtain a target drum water level prediction model; the target drum water level prediction model is a multi-step time-series prediction model; collecting time-series data and transmitting the collected data to the target drum water level prediction model for drum water level prediction. This improves the accuracy of predicting the drum water level in the boiler.

This invention belongs to the field of boiler steam control and discloses a low-power intelligent controller and control method for dual-boiler steam systems. The method comprises: S1, real-time detection of the temperatures of the preheating boiler and the high-temperature boiler using temperature sensors; S2, performing closed-loop control calculations on the preheating boiler and the high-temperature boiler based on the set steam temperatures to obtain their respective heating power requirements. This low-power intelligent controller and control method for dual-boiler steam systems addresses the problems of uncoordinated control, excessive total power, and significant impact from simultaneous startup that often occur in dual-boiler steam generation systems under limited total power conditions. It enables coordinated operation of the two boilers within the maximum permissible total power range, thus balancing the heating control accuracy, overall power constraints, and timing coordination during execution of the dual-boiler steam system.

The utility model relates to control panel test technical field especially relates to a kind of railway passenger car electric hot water boiler control panel testing device and system.Railway passenger car electric hot water boiler control panel testing device includes: man-machine interaction module, PLC control module, signal output module, signal acquisition module and signal conversion module;Man-machine interaction module is set on operating panel;PLC control module, signal output module, signal acquisition module and signal conversion module are located in box;PLC control module is connected with man-machine interaction module, signal output module and signal acquisition module respectively;PLC control module is used to output analog signal;Signal output module is connected with the signal input end of the control panel to be tested, and the performance feedback output end of the control panel to be tested is connected with signal acquisition module through signal conversion module.The utility model technical scheme is favorable to improve the performance test efficiency of electric hot water boiler control panel, and is favorable to reduce cost.

The present application belongs to the field of boiler control, and particularly relates to an automatic baling biomass boiler fuel gasification coupling control method. The method comprises: extracting raw material activity index and dynamically adjusting baling machine parameters to produce customized fuel; collecting multi-modal data of a gasification furnace and a boiler in real time and constructing a data vector; using a gasification combustion digital twin to calculate the nonlinear coupling relationship between fuel properties and the data vector to generate an optimal operating parameter combination; and using a model predictive control algorithm to issue coordinated control instructions to the fuel forming, gasification, distribution and heat exchange whole chain. The present application realizes source compensation for raw material fluctuations and accurate mapping of dynamic characteristics through whole-process closed-loop control, improves the system comprehensive energy efficiency and load tracking rate, optimizes the safety and environmental performance, and improves the intelligent level of the biomass boiler system.

Provided is an industrial boiler control method using statistical data according to changes in combustion stages. A boiler control method according to an embodiment may include: collecting operation data of each boiler with respect to a plurality of boilers; calculating an operation efficiency of each boiler based on the operation data; generating statistical data of each boiler according to changes in combustion stages from the operation data; and controlling a pressure of each boiler to optimize an objective function having the operation efficiency and the statistical data as parameters. Accordingly, efficiencies of boilers may be prevented from being degraded due to frequent changes in combustion stages for the reason of a position connected to a steam header, and ultimately, energy consumption required for operating boilers may be reduced.

This invention provides a boiler control system that can continuously control the combustion rate while avoiding unintended combustion shutdowns of the boiler. [Solution] The boiler control system comprises a plurality of boilers, a steam header into which the steam generated by each boiler is collected, steam piping connecting each boiler to the steam header, and a number control device that controls the combustion rate of each boiler based on the steam pressure in the steam header. Each boiler has a boiler control unit, which calculates the amount of combustion required for the boiler based on the steam pressure of the corresponding boiler, obtains a predetermined upper limit for the combustion rate of the boiler, and prevents the combustion rate from increasing further when the combustion rate of the boiler reaches the upper limit.

The present application relates to the technical field of hot water boiler control, in particular to an industrial hot water boiler energy efficiency improving system based on artificial intelligence, which comprises a combustion state optimization module, a heat exchange efficiency improving module, an operation mode adjusting module, a safety performance guaranteeing module and an operation optimizing module.In the present application, the combustion efficiency and heat transfer are matched by real-time regulation and control of air and fuel supply, reducing heat loss and combustion inefficiency, and combining with the identification of heat exchanger surface temperature and thermal resistance distribution, dynamic heat exchange regulation is implemented to enhance heat exchange capacity, and the operation mode is adjusted according to external environment temperature changes to realize efficient cooperation between operation state and heat load, potential nodes are marked by identifying abnormal heat-resistant layer temperature rise rate and pressure fluctuation risk, key safety warning is completed in advance, the cooperative relationship between the combustion system and the heat exchanger is reconstructed, the risk area and the operation strategy are integrated, and the heat utilization efficiency and the safety and stability of the boiler operation are improved.

The application provides a pressurized oxygen-enriched combustion sCO2 boiler wall temperature control method and device, and belongs to the technical field of boiler control. The method comprises the following steps: dividing all wall temperature measuring points in a pressurized oxygen-enriched combustion supercritical carbon dioxide boiler wall into multiple boiler wall regions; obtaining original wall temperature data sets from each wall temperature measuring point in each boiler wall region; and performing average temperature analysis on the original wall temperature data sets to obtain a boiler wall average temperature value and a wall temperature vector. The application realizes zoned controllability and overall uniformity of the heating surface wall temperature, adjusts the wall temperature through large-scale flue gas recirculation and multi-stage working fluid distribution, provides a basis for ensuring long-term safe and stable operation of the coupled system, and solves the problems of uneven distribution of the furnace heat load, local overheating of the heating surface, and mismatch between the furnace heat load and the sCO2 cooling capacity in the pipe.

The application relates to the technical field of industrial boiler control, and specifically discloses a kind of electrical control system of boiler pressurization and circulating oil pump, including: main circuit and control alarm circuit, wherein, the main circuit includes: three-phase power supply, frequency converter loop, first power frequency loop, second power frequency loop;The three-phase power supply includes firewire L1, L2, L3 and zero line N;The frequency converter loop includes switch Q12, frequency converter and pressurization pump M connected in sequence;The first power frequency loop includes switch Q14, main contact of contactor KM1 and circulating pump M1 connected in sequence;The second power frequency loop includes switch Q17, main contact of contactor KM2 and circulating pump M2 connected in sequence;The control alarm circuit includes: alarm power supply circuit, audible and visual alarm, fault signal input network.

This invention discloses an energy-saving boiler control method and its control system. The method acquires multi-source operating data of the target boiler and determines the condensing heat exchange boundary state; it determines the condensing heat exchange boundary migration trend value through the condensing heat exchange boundary state over multiple consecutive historical control cycles, predicts the predicted condensing heat exchange boundary state and condensing enhancement window value within the future prediction window; it determines the expected condensing heat exchange benefit based on the condensing enhancement window value, and determines the equivalent combustion demand by combining the user-side predicted heat demand and the boiler's thermal inertia-releaseable heat; it determines the target combustion heat release, target excess air coefficient, target circulating water flow rate, and target flue gas condensing heat exchange bypass ratio based on the equivalent combustion demand and the expected condensing heat exchange benefit; and it establishes a collaborative energy-saving control objective function based on the above objectives, uniformly optimizing the gas valve opening, combustion fan frequency, circulating water pump frequency, and flue gas condensing heat exchange bypass valve opening to improve the overall energy efficiency of the boiler operation.

The present application relates to the technical field of boiler control, and discloses a subcritical boiler drum water level regulating method, which comprises the following steps: setting a sensor to acquire the drum water level, steam flow, feed water flow, boiler pressure and feed water temperature when the boiler is running; setting a dynamic correction model, inputting the boiler pressure and steam flow, and acquiring a pressure self-adaptive dynamic feedforward compensation signal through dynamic correction; based on the feed water temperature, carrying out density compensation on the feed water flow to acquire a feed water mass flow compensation signal; based on the deviation of the drum water level from the water level set value, combining the dynamic feedforward compensation signal and the feed water mass flow compensation signal, generating a feed water valve opening degree instruction, and through the establishment of dynamic self-adaptive feedforward compensation of pressure and steam flow and the combination of mass flow correction of feed water temperature, the water level control precision and anti-disturbance ability of the subcritical boiler under variable working conditions are significantly improved.