31results about "Combustion regulation systems" patented technology

The invention discloses a boiler blending combustion biomass fuel coupling chemical looping combustion system, and particularly relates to the technical field of fuel control, the system comprises an operation monitoring module, through deploying a multi-type sensor network at a key position, real-time collecting whole flow operation data, constructing a space-time monitoring data set covering the physical and chemical process of a combustion system, and determining a combustion state of the combustion system; the reliability of data acquisition is guaranteed through signal filtering and abnormal value correction; according to the method, a multi-dimensional cooperative control framework is constructed, the six-dimensional influence coefficients are fused into the comprehensive distribution index, the distribution strategy of the fuel between the main combustion area and the chemical looping reactor is dynamically optimized, traditional single control dimension is expanded to multi-dimensional cooperative control, and the adaptability of the system to complex fuel characteristics is improved.

This fuel calculation device comprises: a remaining fuel amount calculation unit that periodically calculates and stores an approximate value of the remaining fuel amount on the basis of the measurement value of the remaining fuel amount remaining in a fuel container, and the fuel flow rate of fuel supplied from the fuel container; a failure determination unit that determines whether a remaining fuel amount meter that outputs the measurement value of the remaining fuel amount has failed; and a display control unit that controls so as to display the measurement value of the remaining fuel amount when the remaining fuel amount meter has not failed, and to display the approximate value of the remaining fuel amount when the remaining fuel amount meter has failed.

The invention discloses a flow and pressure detection system of a biomass boiler. The flow and pressure detection system comprises a fuel information acquisition module, a combustion data monitoring module, a dynamic analysis module, a model construction module and a central control regulation module, the fuel information acquisition module is used for acquiring static biomass fuel information and dynamic biomass fuel information; the combustion data monitoring module is used for monitoring the combustion reaction of biomass fuel in the boiler; the dynamic analysis module is used for analyzing the biomass fuel information and generating biomass fuel frequency conversion data information; the model construction module is used for constructing a biomass boiler flow-pressure parameter linkage model; and the central control adjusting module is used for carrying out real-time detection and dynamic adjustment on flow parameters and pressure parameters of the biomass boiler. By detecting and monitoring the flow and pressure of the biomass boiler, the combustion performance and stability of the biomass boiler are improved, and the use cost is saved.

Methods, apparatus, systems, and articles of manufacture are disclosed to measure gaseous emissions of a flare burner. An example apparatus includes a data collector to obtain emission data corresponding to an emission gas generated by a flare burner, a parameter calculator to calculate a concentration of the emission gas relative to a reference gas, calculate a flow rate of the emission gas based on the reference gas, and determine whether the flow rate satisfies a threshold. The example apparatus further includes a burner configurator to adjust at least one of a configuration or an operational parameter of the flare burner when the flow rate does not satisfy the threshold, and operate the flare burner with at least one of the adjusted configuration or the operational parameter.

A system and method for optimizing combustion in boiler. The optimization of the combustion in the boiler involves obtaining various data relating to the flow of fuel and air to burners of the boiler and the flame in the burner zone of the boiler that is generated from the introduction of the fuel and air into the burner zone. The data is used to determine air flows to the burners. The data and air flows are used to balance air and fuel at individual burners by manipulating air to match the fuel flow. The balancing of air and fuel at individual burners by manipulating air to match the fuel flow uses a guided search optimization algorithm that mixes stoichiometry determinations with a custom search algorithm that accounts for measurement inaccuracies and unexpected interactions between burners.

Determination of the power output by a fuel parameter. A method for regulating a burner installation, the burner installation comprising: a combustion chamber; an air supply duct which opens into the combustion chamber and comprises an air actuator in order to adjust the value of the air supply through the air supply duct; and a fuel supply duct which opens into the combustion chamber and comprises a fuel actuator in order to adjust the value of the fuel supply through the fuel supply duct, the method comprising the steps of: measuring and / or predetermining the value of the air supply through the air supply duct; measuring and / or predetermining the value of the air ratio λ; providing a fuel parameter h ; calculating the actual value of the power output of the burner installation from the value of the air supply, the value of the air ratio λ, the fuel parameter h P ist ; adjusting the burner installation in accordance with the actual value of the power output P ist and the target value of the power output P soll by means of an actuator selected from the fuel actuator and one air actuator.​

Processes for managing combustion of a fuel gas in the presence of an oxidant supplied to a combustion zone, where the fuel gas undergoes an event that includes a pressure decrease and / or an average molecular weight increase, and where the fuel gas is supplied to the combustion zone via a valve. The process can include (I) detecting the event. Upon detecting the event in step (I), the process can also include (II-a) controlling the fuel gas supplied to the combustion zone by limiting an output of the valve to no more than a predetermined threshold output to prevent excessive fuel gas flooding the combustion zone and / or (II-b) controlling the fuel gas supplied to the combustion zone by adjusting the valve to maintain a pressure of the fuel gas after the valve to no higher than a predetermined threshold pressure to prevent excessive fuel gas flooding the combustion zone.

According to the heat accumulating type kiln constant-temperature combustion control system and method, combustion-supporting air temperature, combustion-supporting air flow and gas flow are collected in real time, combustion input energy in a kiln is dynamically calculated on the basis of a preset combustion input energy model, and then the combustion-supporting air flow and the gas flow are adjusted; and combustion input energy entering the kiln is kept constant in each fire exchange period. Through the mode, the system not only adapts to the temperature change of the checker of the regenerative chamber in real time, but also solves the problem of insufficient or excessive energy caused by neglecting the air temperature change in the traditional technology by accurately calculating the energy input, and effectively reduces the problem of unstable temperature of molten glass caused by temperature fluctuation in the prior art; the temperature precision of the kiln and the stability of the glass melting quality are guaranteed, and the heat efficiency of the whole kiln system and the stability of the combustion process are improved.

Various embodiments include a combustion apparatus. An example apparatus includes: a burner; a side duct; and a feed duct. The side duct comprises an inlet, an outlet, and a mass flow sensor between the inlet and the outlet of the side duct. The mass flow sensor is configured to detect a signal corresponding to an amount of flow of a fluid through the side duct. The side duct comprises a first portion and a second portion. The first portion of the side duct comprises the mass flow sensor. The first portion of the side duct is arranged within the feed duct.

The invention relates to a method for evaluating a quasi-stationary pressure difference detectable by a sensor at a gas boiler, wherein the sensor is a differential pressure sensor or a mass flow sensor, wherein the gas boiler has a mixing device (4) for mixing fuel flowing from a fuel inlet (G) and air flowing from an air inlet (L) to form a fuel-air mixture, a blower (5) for drawing the fuel and air through the mixing device (4), a main flow restrictor (3) for limiting a mass flow of fuel into the mixing device (4), a control valve (2) arranged upstream of the main flow restrictor (3) for controlling a mass flow of fuel into the mixing device (4), and a safety valve (1) arranged upstream of the control valve (2) for interrupting the mass flow of fuel.wherein the sensor detects a differential pressure between a pressure (p2) at a measuring point upstream of the main flow throttle (3) and downstream of the control valve (2) and a reference pressure (p0, p1) at a reference measuring point and transmits it to an evaluation electronics unit, wherein the evaluation electronics unit compares the differential pressure during a pre-rinse phase in which the safety valve (1) is closed with the differential pressure after the pre-rinse phase and detects a fault by the comparison.

The electronic control device of the present application is provided with: a flow rate calculation section that calculates the flow rate of intake air from an output signal of a flow rate measuring device attached to an intake pipe; a flow rate correction value calculation section that calculates an average value, a maximum value, a minimum value, and an amplitude of a signal of one or more frequencies included in the output signal of the flow rate measuring device and above a fundamental frequency of the output signal of the flow rate measuring device, for a prescribed period, of the flow rate of intake air calculated by the flow rate calculation section, and calculates a correction value for the flow rate of intake air from the calculation results; and a flow rate correction section that corrects the flow rate of intake air according to the correction value.

A method for starting a heating appliance (1) is proposed, comprising a conveying device (2) for conveying a combustion mixture of fuel gas and combustion air to a burner (3), an ignition device (12) for the combustion mixture, and a gas valve (5), wherein, prior to the commissioning of the conveying device (2), the gas valve (5) is briefly opened (32), thereby filling the gas valve (5) with fuel gas. The duration of the brief opening (32) of the gas valve (5) can be a maximum of half the regular safety period (35) for commissioning the heating appliance (1). This reduces the influence of time delays, caused by a longer period since the last interruption of burner operation, between the opening of the gas valve (5) and the commencement and stabilization of the fuel gas flow.

A data stream indicative of a first set of flare tip parameters is received. A second set of parameters is determined based on the first set of flare tip parameters. A control signal is sent to an actuable device based on the first set of parameters and the second set of parameters. The actuable device is configured to maintain at least one parameter of the first set of parameter and the second set of parameters within a specified range.

The application discloses a coal flow breakage early warning system of a coal pulverizing system of a coal-fired power plant, which comprises a coal bunker, a coal falling pipe, an alarm device and a coal feeder; the outlet of the raw coal bunker is connected with the inlet of the coal falling pipe, the outlet of the coal falling pipe is connected with the coal feeder, and the alarm device is arranged in the coal falling pipe and used for detecting the state of the coal flow passing through the coal falling pipe; the alarm device comprises an alarm switch, a control plate and an elastic device, the alarm switch is arranged on the pipe wall of the coal falling pipe, the control plate is hingedly connected to the inner wall of the coal falling pipe, and the elastic device is connected with the control plate; when the coal amount of the coal falling pipe is reduced, the elastic device is used for driving the control plate to trigger the alarm switch. The system realizes early warning of the coal feeder coal flow breakage for the on-duty personnel in advance before triggering the coal feeder coal breakage alarm, timely reminds the on-duty personnel to take measures, guarantees that the coal pulverizing system maintains the stable coal feeding amount of the given instruction, and avoids unnecessary human waste and forced shutdown of the coal pulverizing system.

Fuel type detection and / or fuel quantity control and / or air quantity control with different fuel types using mass flow sensors. Method for estimating the type of fuel (6) and / or fuel gas (6) in a combustion device (1) with a mass flow sensor (11), wherein the mass flow sensor (11) is in fluid communication with the fuel (6) and / or fuel gas (6), the method comprising: recording a heating power signal indicating a heating power of a heating element (26) of the mass flow sensor (11); recording a first temperature signal indicating a first temperature of the fuel (6) and / or fuel gas (6) using a first resistance element (29) of the mass flow sensor (11);Recording a second temperature signal, indicating a second temperature of the fuel (6) and / or the fuel gas (6), using a second resistance element (27, 28) of the mass flow sensor (11), wherein the second resistance element (27, 28) is arranged upstream or downstream of the heating element (26); and determining a heating power from the heating power signal, a first temperature from the first temperature signal, and a second temperature from the second temperature signal.

Various embodiments include a method for regulating a burner appliance comprising a combustion chamber, an air supply duct with an actuator to adjust the air supply, and a fuel supply duct with a fuel actuator to adjust the fuel supply. The method comprises: determining the value of the air supply V L; determining the value of an air ratio λ; providing an individual scalar fuel parameter h; calculating the power output P_ist of the appliance based on the air supply V L, the air ratio λ, and the individual scalar fuel parameter h using P_ist=h / λ·V L; and regulating the burner appliance with the fuel actuator and the air actuator until the actual value reaches the target value.

The present invention describes a device (10) for delivering a combustible gaseous mixture (M) comprising a first duct (11) for feeding air (A) and a second duct (12) for feeding a gaseous fuel (G), which join in a mixing zone (13), in which the gaseous fuel (G) and air (A) mix according to a lambda coefficient (X) before being sent to a burner (50), a ventilation device (14) for feeding the air (A) and at the same time suctioning gaseous fuel (G) along said ducts (11, 12), and means (16) for regulating the flow rate of gaseous fuel (G). The invention also concerns a method to use a device (10) for delivering a combustible gaseous mixture (M).

An electronic control device includes: a flow rate calculation unit that calculates a flow rate of intake air based on an output signal of a flow rate measurement device assembled to an intake pipe; a flow rate correction value calculation unit that calculates an average value, a maximum value, and a minimum value of the flow rate of the intake air, calculated by the flow rate calculation unit, during a predetermined period, and an amplitude of a signal with one or more frequencies equal to or higher than a fundamental frequency of the output signal of the flow rate measurement device and included in the output signal of the flow rate measurement device, and calculates a correction value for the flow rate of the intake air based on calculation results; and a flow rate correction unit that corrects the flow rate of the intake air based on the correction value.

The invention relates to a multifuel capable network for at least one heating system comprising: a mixing station (50) for blending at least two inlet gases to a fuel mixture, a pressure regulator (41), at least two inlet gas sources (10) connecting to the mixing station (50), a flow regulator (21) for each inlet gas sources (10), a flow rate measuring unit (22) for each inlet gas sources (10), at least one of heating system (60) each comprising at least one burner (80), a gas flow regulating system (81) and an air flow regulating system (82) for each burner (80), a gas supply grid (90) between the mixing station (50) and the heating system / s (60)), a mixing station controller (100), and a heating system controller / s (200).

The embodiment of the present application provides a control method and a control system for fuel switching of a gas boiler, and belongs to the technical field of boilers. The control method for fuel switching of the gas boiler comprises the following steps: obtaining a gas supply signal of a gas supply device, the gas supply device being connected to a boiler dynamic operation system through a gas supply pipeline to supply gas to a boiler in the boiler dynamic operation system; and when the gas supply signal shows that the gas supply device abnormally supplies gas, the opening degree of a first group of control valves on a main gas supplement pipeline is controlled to control the main gas supplement pipeline to supply gas to the boiler in the boiler dynamic operation system. The complex combustion control and rapid switching of multiple main fuels can be realized, the stable operation of the boiler is maintained when upstream gas is abnormal, the smooth production of downstream ethylene devices is ensured, and the unplanned shutdown is greatly reduced; the material loss, equipment life loss and excessive emission of pollutants caused by frequent start and stop are saved.

A fuel gas remaining amount management system is provided with: a flow rate measurement unit that measures the flow rate of fuel gas flowing from a fuel gas container provided in one or more demand residences to a fuel gas facility; a remaining amount calculation unit that calculates a predicted value of the remaining amount of fuel gas in the fuel gas container after the elapse of the second predetermined period by using past data, which is past fuel gas consumption during the first predetermined period; and a notification unit that notifies the replacement time of the gas container on the basis of the predicted value or the replacement cycle of the gas container, in which the remaining amount calculation unit changes the frequency at which the predicted value is calculated on the basis of predetermined predicted frequency change trigger information.

Processes for managing combustion of a fuel gas in the presence of an oxidant supplied to a combustion zone, where the fuel gas undergoes an event that includes a pressure decrease and / or an average molecular weight increase, and where the fuel gas is supplied to the combustion zone via a valve. The process can include (I) detecting the event. Upon detecting the event in step (I), the process can also include (Il-a) controlling the fuel gas supplied to the combustion zone by limiting an output of the valve to no more than a predetermined threshold output to prevent excessive fuel gas flooding the combustion zone and / or (Il-b) controlling the fuel gas supplied to the combustion zone by adjusting the valve to maintain a pressure of the fuel gas after the valve to no higher than a predetermined threshold pressure to prevent excessive fuel gas flooding the combustion zone.

The invention relates to a method for evaluating a quasi-steady pressure difference in a gas boiler, which can be obtained by a sensor, wherein the sensor is a differential pressure sensor or a mass flow sensor, wherein the gas boiler has a mixing device (4) for mixing fuel flowing in from a fuel inlet (G) and air flowing in from an air inlet (L) to form a fuel-air mixture, a blower (5) for drawing in the fuel and air through the mixing device, a main flow restrictor (3) for restricting the mass flow of the fuel in the mixing device (4), a regulating valve (2) arranged upstream of the main flow restrictor (3) and for regulating the mass flow of the fuel into the mixing device (4), and a safety valve (1) arranged upstream of the regulating valve (2) and for interrupting the mass flow of the fuel, wherein the sensor acquires the pressure difference between the pressure (p2) at a measurement point upstream of the main flow restrictor (3) and downstream of the regulating valve (2) and a reference pressure (p0, p1) at a reference measurement point and transmits it to an evaluation electronics, wherein the evaluation electronics compares the pressure difference in a pre-flush phase, in which the safety valve (1) is closed, with the pressure difference after the pre-flush phase and detects a fault by comparison.

Method for operating a gas burner appliance (10) comprising: a combustion chamber (11), an ignition device (27), a fan (14), a gas safety valve unit (19) assigned to the gas duct (16), an electric gas flow modulator (18) assigned to the gas duct (16), a sensor (21) positioned between the gas safety valve unit (19) and the gas flow modulator (18), wherein the gas burner appliance (10) is operated to determine the gas family of the gas of the gas / air mixture by the following steps: Before the gas burner appliance becomes started measuring the ambient air pressure by the sensor (21), wherein the ambient air pressure is measured when the safety valve unit (19) is closed, the gas flow modulator (18) is opened and the fan (14) is stopped. When the gas burner appliance (10) becomes started running the fan (14) at a defined fan speed, increasing the opening of the gas flow modulator (18) while activating the ignition device (27) trying to ignite the gas / air mixture until the activation of ignition device results into a combustion of the gas / air mixture. Determining from the fan speed of the fan (14) and from the measured ambient air pressure an air volume flow. Measuring the gas pressure by the sensor (21) when the safety valve unit (19) is opened, the gas flow modulator (18) is opened and the fan (14) is running. Determining from the opening of the gas flow modulator (18) at which the combustion started and from the measured gas pressure a gas volume flow. Determining a ratio between the gas volume flow and the air volume and from said ratio the gas family of the combusted gas.

Method for evaluating an installation of a gas-air system (1) of a heating appliance (2) comprising an air duct (3) with a fan (4) and a gas duct (5) with a gas valve (6), wherein the method comprises at least the following steps: a) providing flow reference values ​​(SR) of a gas flow through the gas valve (6) when the air flow is modulated by means of the fan (4); b) monitoring actual flow values ​​(S) of a gas flow through the gas valve (6) when the air flow is modulated by means of the fan (4); c) determining a deviation (A) of the actual flow values ​​(S) of the gas flow from the flow reference values ​​(SR) of the gas flow; d) evaluating the deviation (A); e) inferring a cause of the deviation (A).

A burner device comprising an air intake, a burner head including an ignition device, a body section defining a fluid flow channel between said air intake and said burner head, and a gas injector for injecting combustible gas into said fluid flow channel. The device has at least one resonance chamber shaped and dimensioned such that fluid inside it resonates, in use, at a respective selected resonant frequency.

The present invention describes a device (10) for delivering a combustible gaseous mixture (M) comprising a first duct (11) for feeding air (A) and a second duct (12) for feeding a gaseous fuel (G), which join in a mixing zone (13), in which the gaseous fuel (G) and air (A) mix according to a lambda coefficient (X) before being sent to a burner (50), a ventilation device (14) for feeding the air (A) and at the same time suctioning gaseous fuel (G) along said ducts (11, 12), and means (16) for regulating the flow rate of gaseous fuel (G). The invention also concerns a method to use a device (10) for controlling the delivering of a combustible gaseous mixture (M).

A device for controlling a fuel-oxidizer mixture for a premix gas burner includes: an intake duct, including an inlet, a mixing zone, and a delivery outlet; an injection duct; a gas regulating valve, located along the injection duct; a fan, located in the intake duct to generate therein a flow of the oxidizer fluid or of the mixture; a control unit, configured for generating drive signals; a sensor unit, configured to detect a first differential pressure, between a first detecting section, located in the intake duct upstream of the mixing zone in the direction of inflow and a second detecting section, located in the intake duct downstream of the mixing zone in the direction of inflow, and configured to detect a second differential pressure, between the first detecting section and a third detecting section, located in the injection duct between the gas regulating valve and the mixing zone.

The combustion system 100 includes a burner 12, a fuel conduit L1 connected to the burner 12 and supplying ammonia gas ga to the burner 12, a fuel valve V2 provided in the fuel conduit L1 and opening and closing the fuel conduit L1, a first gas conduit L3 fluidly connected to the fuel conduit L1 between the burner 12 and the fuel valve V2 and supplying a first gas g1 inert to the ammonia gas ga to the fuel conduit L1, and a second gas conduit L4 fluidly connected to the fuel conduit L1 between the burner 12 and the fuel valve V2 and supplying a second gas g2 inert to the first gas g1 to the fuel conduit L1.

A remaining gas amount management system includes: a flow rate measurer that measures a flow rate of a gas flowing to a gas appliance from a gas container located at a consumer's place or at each of a plurality of consumer's places; a remaining amount calculator that calculates a predicted value by using past data indicating past gas consumption in a first predetermined period, the predicted value representing a remaining gas amount of the gas container after a second predetermined period has elapsed; and an informer that informs of a replacement timing of the gas container based on the predicted value or a replacement cycle of the gas container. Based on predetermined prediction frequency change trigger information, the remaining amount calculator changes a frequency at which the predicted value is calculated.