CN105928004A - Fuel oil flow control method and system of high-temperature combustor - Google Patents
Fuel oil flow control method and system of high-temperature combustor Download PDFInfo
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- CN105928004A CN105928004A CN201610427034.8A CN201610427034A CN105928004A CN 105928004 A CN105928004 A CN 105928004A CN 201610427034 A CN201610427034 A CN 201610427034A CN 105928004 A CN105928004 A CN 105928004A
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- fuel
- flow
- fuel oil
- supply system
- oil supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/10—Correlation
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention relates to a fuel oil flow control method and system of a high-temperature combustor. The fuel oil flow control system comprises a flow controller, a fuel oil supply system, a flow sensor, a comparator and an optimal flow identifier. The flow sensor is installed on an oil supply pipeline of the fuel oil supply system and connected with the pipeline. The flow controller is installed in a control cabinet and connected with the fuel oil supply system. The optimal flow identifier determines the optimal flow value needed by the fuel oil supply system under different working situations, and the optimal flow identifier is arranged in the controller and connected with the comparator. The fuel oil supply system is used for supplying fuel oil to a high-temperature combustion system, installed between oil pumps and connected with a combustion chamber of the high-temperature combustor. The comparator is arranged in the controller and connected with the fuel oil flow controller. The invention further relates to the fuel oil flow control method of the high-temperature combustor. The fuel oil flow control method and system of the high-temperature combustor have the advantages that high-quality control over the fuel oil flow can be achieved, high-quality and low-emission combustion of fuel oil is achieved, and the purposes of energy conservation and emission reduction are achieved.
Description
Technical field
The present invention relates to fluid conveying and regulation equipment technical field, be specifically related to a kind of high temperature combustion
The fuel flow control method of burner and system thereof.
Background technology
The fuel oil supply system of high-temperature burner is a set of to save based on frequency-controlled hydraulic drive and ratio
The fuel oil supply system that stream valve control technology combines, due to the existence of electric-motor pump and is passed by flow
The impact of the purely retarded of sensor and long pipe runs, existing fuel oil supply system shows as one and has stagnant
Afterwards, time variation and be difficult to set up the system of mathematical models.These factors add realization combustion
The difficulty of oil precise control of flew.It addition, for high-temperature burner, it is achieved fuel flow is high
The final purpose of quality control is that the high-quality realizing burner temperature controls, and this is accomplished by basis
Target temperature value determines desired fuel flow value.Practical work process at high-temperature burner
In, the air flow rate that the flow of fuel oil is typically in the target temperature by system and combustor determines
, fuel flow is generally given by empirical equation, is not very accurate, stagnant additionally, due to temperature
Rear characteristic, result in during Actual combustion, and in order to reach target temperature, fuel flow is total
It is above the optimal flow of actual requirement, is in a kind of fuel-rich combustion state, thus causes the energy
Waste and the tail gas pollution to air.Therefore, how fuel oil is determined according to working condition requirement
Optimal flow, sets up the high-quality of fuel oil, low emissions combustion control method has highly important
Meaning.
Summary of the invention
It is an object of the invention to for deficiency of the prior art, it is provided that a kind of offer optimal flow
The fuel flow control method of high-temperature burner.
Another object of the present invention is to disclose the combustion of a kind of high-temperature burner providing optimal flow
EFM Electronic Fuel Management.
For achieving the above object, the invention discloses following technical scheme:
The fuel flow control method of a kind of high-temperature burner, comprises the steps:
S1 sets up the mathematical model of fuel oil supply system, and mathematical model is carried out theory analysis,
Obtain fuel oil supply system fundamental characteristics including fuel supply flow rate, pressure characteristic；
S2 analyzes the impact on high-temperature burner combustibility of the fuel oil supply system parameter, obtains
The Exit temperature distribution of combustor and exhaust emissions rule under the conditions of various fuel delivery parameters；
S3 obtains the priori of system according to the two-step analysis of step S1, S2；
S4 is according to the data on flows of field measurement and the side of actual condition data acquisition system identification
Method real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system, i.e. determines under different operating mode
What oil supply system needed most preferably expects flow value；
S5 on the basis of in obtaining step S4, system most preferably expects flow value, supplies for fuel oil
Delayed, the parameter time varying characteristic showed to system, designs suitable control algolithm, real
The high-quality of existing fuel flow controls.
Further, in described step S1, concretely comprise the following steps, initially with modelling by mechanism method
Set up the mathematical model of fuel oil supply system flow, analyze its fundamental characteristics.
Further, in described step S2, concretely comprise the following steps, in AMESim simulation software
Set up the mathematical model of fuel oil supply system, and emulate under different operating modes, draw each
Fuel flow Transport Law and characteristic thereof during operating mode；Then fluid simulation software is used to analyze fuel oil
Flow is on combustion stability and the impact of Temperature Distribution；Finally adopt and experimentally measure difference
The flow of system, pressure, temperature data during operating mode, analyze fuel oil supply system characteristic of fuel delivery pair
The impact of flow, temperature control energy, and simulation result is verified and optimizes.
Further, in described step S3, concretely comprise the following steps, initially set up fuel oil at high temperature
The gas-liquid two-phase governing equation burnt in burner and physical model, i.e. set up fuel oil and exist
The numerical simulation model of burning Indoor Combustion；Then in Solidworks software, set up burning
The 3-D geometric model of room, and import GAMBIT software and carry out stress and strain model；Then meter is used
Fluid operator Mechanics Simulation software CFD simulates fuel oil burning in a combustion chamber, obtains various fuel feeding
The Exit temperature distribution of Parameter Conditions lower combustion chamber and exhaust emissions rule；Finally at the base of emulation
Test targetedly on plinth, thus checking and optimization Simulation result.
Further, in described step S4, concretely comprise the following steps, according to the flow of field measurement
Data and actual condition data, use least square method supporting vector machine real-time identification to go out fuel delivery
The optimum fuel supply flow rate curve of system, i.e. determines the optimal stream that under different operating mode, oil supply system needs
Value.
Further, in described step S5, concretely comprise the following steps, show for fuel flow
The purely retarded come, parameter time varying, the characteristic such as many interference, a kind of novel hereditary PID is proposed pre-
Surveying control method, this control method mainly comprises three parts, genetic algorithm, pid algorithm and
Predictor, this algorithm method particularly includes: use pid control algorithm to restrain as major control,
To ensure the control accuracy of system, genetic algorithm is utilized to regulate the ratio system of PID the most in real time
Number, integral coefficient and three parameters of differential coefficient, to overcome systematic parameter time-varying and interference to being
The impact of system, uses predictor to be predicted the following output valve of system, to eliminate purely retarded
Impact on system control performance.
For realize above-mentioned second give purpose, the invention discloses the fuel oil stream of a kind of high-temperature burner
Amount control system, including flow controller, fuel oil supply system, flow transducer, comparator,
And the optimal flux identifier for optimal flux identification:
Described flow transducer is arranged on the oil feed line of fuel oil supply system, with pipeline even
Connecing, comparator is given on flow signal one tunnel that it obtains, for calculated flow rate error e (t),
Optimal flux identifier is given on another road, for the optimal fuel flow of identification；
Described flow controller is arranged in switch board, is connected with fuel oil supply system, its output
Signal is used for controlling the rotating speed of oil pump in fuel oil supply system or the aperture of proportioning valve, thus realizes
The control of fuel flow；
Described optimal flux identifier, according to on-the-spot data on flows and actual condition data, uses
Least square method supporting vector machine real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system,
I.e. determine the optimal flow value that under different operating mode, oil supply system needs, be built in controller, with
Comparator is connected；
Described fuel oil supply system is used for providing fuel oil to high-temperature burning system, is arranged on oil pump
Between, it is connected with the combustor of high-temperature burner；
Described comparator is used for calculating fuel flow error, is built in controller, with fuel oil stream
Amount controller is connected.
Further, it is provided with heredity PID PREDICTIVE CONTROL module in described flow controller, passes through
Heredity PID predictive control algorithm carries out flow-control.
Further, described fuel oil supply system is by frequency conversion motor, oil pump, proportioning valve, pipeline
Composition, frequency conversion motor connects driving oil pump and completes fuel delivery, and proportioning valve is arranged on pipeline,
Realize throttling to control.
The fuel flow control method of a kind of high-temperature burner disclosed by the invention and system thereof, tool
There is a following beneficial effect:
The present invention can realize the high-quality of fuel flow and control, it is achieved the high-quality of fuel oil, low row
Put burning, reach the purpose of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and referring to the drawings the invention will be further described.
Refer to Fig. 1.
The fuel flow control method of a kind of high-temperature burner, comprises the steps:
S1 sets up the mathematical model of fuel oil supply system, and mathematical model is carried out theory analysis,
Obtain fuel oil supply system fundamental characteristics including fuel supply flow rate, pressure characteristic；
S2 analyzes the impact on high-temperature burner combustibility of the fuel oil supply system parameter, obtains
The Exit temperature distribution of combustor and exhaust emissions rule under the conditions of various fuel delivery parameters；
S3 obtains the priori of system according to the two-step analysis of step S1, S2；
S4 is according to the data on flows of field measurement and the side of actual condition data acquisition system identification
Method real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system, i.e. determines under different operating mode
What oil supply system needed most preferably expects flow value, it is achieved the high-quality of fuel oil, low emissions combustion,
Reach the purpose of energy-saving and emission-reduction；
S5 on the basis of in obtaining step S4, system most preferably expects flow value, supplies for fuel oil
To characteristics such as delayed, the parameter time varyings that system shows, design suitable control algolithm,
The high-quality realizing fuel flow controls.
As specific embodiment, in described step S1, concretely comprise the following steps, initially with mechanism
Modeling sets up the mathematical model of fuel oil supply system flow, analyzes its fundamental characteristics.
As specific embodiment, in described step S2, concretely comprise the following steps, emulate at AMESim
Software is set up the mathematical model of fuel oil supply system, and emulates under different operating modes,
Fuel flow Transport Law and characteristic thereof when drawing each operating mode；Then fluid simulation software is used to divide
Analysis fuel flow is on combustion stability and the impact of Temperature Distribution；Finally adopt and experimentally survey
The flow of system, pressure, temperature data when going out different operating mode, analyze fuel oil supply system fuel feeding
Characteristic is on flow, the impact of temperature control energy, and verifies simulation result and optimize.
As specific embodiment, in described step S3, concretely comprise the following steps, initially set up fuel oil
At gas-liquid two-phase governing equation and the physical model of high-temperature burner burning Indoor Combustion, i.e. set up
Fuel oil is in the numerical simulation model of burning Indoor Combustion；Then build in Solidworks software
The 3-D geometric model of vertical combustor, and import GAMBIT software and carry out stress and strain model；Then
Use Fluid Mechanics Computation simulation software CFD to simulate fuel oil burning in a combustion chamber, obtain each
The Exit temperature distribution of combustor and exhaust emissions rule under the conditions of kind of fuel delivery parameters；Finally imitative
Test targetedly on the basis of Zhen, thus checking and optimization Simulation result.
As specific embodiment, in described step S4, concretely comprise the following steps, according to field measurement
Data on flows and actual condition data, use least square method supporting vector machine real-time identification go out combustion
The optimum fuel supply flow rate curve of oil feed system, i.e. determines oil supply system needs under different operating mode
Optimal flow value.
As specific embodiment, in described step S5, concretely comprise the following steps, for fuel flow
The purely retarded showed, parameter time varying, the characteristic such as many interference, a kind of novel heredity is proposed
PID forecast Control Algorithm, this control method mainly comprises three parts, genetic algorithm, PID
Algorithm and predictor, this algorithm method particularly includes: use pid control algorithm as main control
System rule, to ensure the control accuracy of system, utilizes genetic algorithm to regulate the ratio of PID the most in real time
Example coefficient, integral coefficient and three parameters of differential coefficient, to overcome systematic parameter time-varying and interference
Impact on system, uses predictor to be predicted the following output valve of system, pure to eliminate
The delayed impact on system control performance.
The invention also discloses the fuel flow control system of a kind of high-temperature burner, including flow
Controller, fuel oil supply system, flow transducer, comparator and distinguish for optimal flux
The optimal flux identifier known:
Described flow transducer is arranged on the oil feed line of fuel oil supply system, with pipeline even
Connecing, comparator is given on flow signal one tunnel that it obtains, for calculated flow rate error e (t),
Optimal flux identifier is given on another road, for the optimal fuel flow of identification；
Described flow controller is arranged in switch board, is connected with fuel oil supply system, its output
Signal is used for controlling the rotating speed of oil pump in fuel oil supply system or the aperture of proportioning valve, thus realizes
The control of fuel flow；
Described optimal flux identifier, according to on-the-spot data on flows and actual condition data, uses
Least square method supporting vector machine real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system,
I.e. determine the optimal flow value that under different operating mode, oil supply system needs, be built in controller, with
Comparator is connected；
Described fuel oil supply system is used for providing fuel oil to high-temperature burning system, is arranged on oil pump
Between, it is connected with the combustor of high-temperature burner；
Described comparator is used for calculating fuel flow error, is built in controller, with fuel oil stream
Amount controller is connected.
As specific embodiment, in described flow controller, it is provided with heredity PID PREDICTIVE CONTROL mould
Block, carries out flow-control by heredity PID predictive control algorithm.
As specific embodiment, described fuel oil supply system by frequency conversion motor, oil pump, proportioning valve,
Pipeline forms, and frequency conversion motor connects driving oil pump and completes fuel delivery, and proportioning valve is arranged on pipeline
On, it is achieved throttling controls.
The above is only the preferred embodiment of the present invention, is not intended to limit；It should be pointed out that,
Although the present invention being described in detail with reference to the various embodiments described above, the ordinary skill of this area
Personnel should be appreciated that the technical scheme described in the various embodiments described above still can be repaiied by it
Change, or the most some or all of technical characteristic is carried out equivalent；And these are revised and replace
Change, do not make the essence of corresponding technical scheme depart from the model of various embodiments of the present invention technical scheme
Enclose.
Claims (9)
1. the fuel flow control method of a high-temperature burner and system thereof, it is characterised in that
Comprise the steps:
S1 sets up the mathematical model of fuel oil supply system, and mathematical model is carried out theory analysis,
Obtain fuel oil supply system fundamental characteristics including fuel supply flow rate, pressure characteristic；
S2 analyzes the impact on high-temperature burner combustibility of the fuel oil supply system parameter, obtains
The Exit temperature distribution of combustor and exhaust emissions rule under the conditions of various fuel delivery parameters；
S3 obtains the priori of system according to the two-step analysis of step S1, S2；
S4 is according to the data on flows of field measurement and the side of actual condition data acquisition system identification
Method real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system, i.e. determines under different operating mode
What oil supply system needed most preferably expects flow value；
S5 on the basis of in obtaining step S4, system most preferably expects flow value, supplies for fuel oil
Delayed, the parameter time varying characteristic showed to system, designs suitable control algolithm, real
The high-quality of existing fuel flow controls.
The fuel flow control method of a kind of high-temperature burner the most according to claim 1,
It is characterized in that, in described step S1, concretely comprise the following steps, build initially with modelling by mechanism method
The mathematical model of vertical fuel oil supply system flow, analyzes its fundamental characteristics.
The fuel flow control method of a kind of high-temperature burner the most according to claim 1,
It is characterized in that, in described step S2, concretely comprise the following steps, build in AMESim simulation software
The mathematical model of vertical fuel oil supply system, and emulate under different operating modes, draw each work
Fuel flow Transport Law and characteristic thereof during condition；Then fluid simulation software is used to analyze fuel oil stream
Amount is on combustion stability and the impact of Temperature Distribution；Finally adopt and experimentally measure different work
The flow of system, pressure, temperature data during condition, analyze fuel oil supply system characteristic of fuel delivery convection current
The impact of amount, temperature control energy, and simulation result is verified and optimizes.
The fuel flow control method of a kind of high-temperature burner the most according to claim 1,
It is characterized in that, in described step S3, concretely comprise the following steps, initially set up fuel oil and fire at high temperature
The gas-liquid two-phase governing equation of burner burning Indoor Combustion and physical model, i.e. set up fuel oil in combustion
Burn the numerical simulation model of Indoor Combustion；Then in Solidworks software, combustor is set up
3-D geometric model, and import GAMBIT software and carry out stress and strain model；Then calculating is used
Fluid mechanical emulation software CFD simulates fuel oil burning in a combustion chamber, obtains various fuel feeding ginseng
The Exit temperature distribution of said conditions lower combustion chamber and exhaust emissions rule；Finally on the basis of emulation
On test targetedly, thus checking and optimization Simulation result.
The fuel flow control method of a kind of high-temperature burner the most according to claim 1,
It is characterized in that, in described step S4, concretely comprise the following steps, according to the flow number of field measurement
According to actual condition data, use least square method supporting vector machine real-time identification go out fuel supply system
The optimum fuel supply flow rate curve of system, i.e. determines the optimal flow that under different operating mode, oil supply system needs
Value.
The fuel flow control method of a kind of high-temperature burner the most according to claim 1,
It is characterized in that, in described step S5, concretely comprise the following steps, show for fuel flow
Purely retarded, parameter time varying, the characteristic such as many interference, a kind of novel hereditary PID prediction is proposed
Control method, this control method mainly comprises three parts, genetic algorithm, and pid algorithm is with pre-
Survey device, this algorithm method particularly includes: use pid control algorithm to restrain as major control, with
The control accuracy of guarantee system, utilize genetic algorithm regulate the most in real time PID proportionality coefficient,
Integral coefficient and three parameters of differential coefficient, to overcome systematic parameter time-varying and interference to system
Impact, uses predictor to be predicted the following output valve of system, to eliminate purely retarded to being
The impact of system control performance.
7. the fuel flow control system of a high-temperature burner, it is characterised in that include flow
Controller, fuel oil supply system, flow transducer, comparator and distinguish for optimal flux
The optimal flux identifier known:
Described flow transducer is arranged on the oil feed line of fuel oil supply system, with pipeline even
Connecing, comparator is given on flow signal one tunnel that it obtains, for calculated flow rate error, and another road
Give optimal flux identifier, for the optimal fuel flow of identification；
Described flow controller is arranged in switch board, is connected with fuel oil supply system, its output
Signal is used for controlling the rotating speed of oil pump in fuel oil supply system or the aperture of proportioning valve, thus realizes
The control of fuel flow；
Described optimal flux identifier, according to on-the-spot data on flows and actual condition data, uses
Least square method supporting vector machine real-time identification goes out the optimum fuel supply flow rate curve of fuel oil supply system,
I.e. determine the optimal flow value that under different operating mode, oil supply system needs, be built in controller, with
Comparator is connected；
Described fuel oil supply system is used for providing fuel oil to high-temperature burning system, is arranged on oil pump
Between, it is connected with the combustor of high-temperature burner；
Described comparator is used for calculating fuel flow error, is built in controller, with fuel oil stream
Amount controller is connected.
The fuel flow control system of a kind of high-temperature burner the most according to claim 7,
It is characterized in that, in described flow controller, be provided with heredity PID PREDICTIVE CONTROL module, by losing
Pass PID predictive control algorithm and carry out flow-control.
The fuel flow control system of a kind of high-temperature burner the most according to claim 7,
It is characterized in that, described fuel oil supply system is by frequency conversion motor, oil pump, proportioning valve, pipeline group
Becoming, frequency conversion motor connects driving oil pump and completes fuel delivery, and proportioning valve is arranged on pipeline, real
Now throttle control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610427034.8A CN105928004B (en) | 2016-06-16 | 2016-06-16 | The fuel flow control method and its system of a kind of high-temperature burner |
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| CN201610427034.8A CN105928004B (en) | 2016-06-16 | 2016-06-16 | The fuel flow control method and its system of a kind of high-temperature burner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168636A (en) * | 2017-11-28 | 2018-06-15 | 中国航发西安动力控制科技有限公司 | RP-3 fuel mass flow measuring methods |
| CN111128312A (en) * | 2019-12-19 | 2020-05-08 | 湖南工业大学 | Zinc oxide volatilization kiln mixed modeling method based on mechanism and support vector machine |
| CN116300666A (en) * | 2023-05-24 | 2023-06-23 | 科大智能物联技术股份有限公司 | Power plant boiler operation control method based on XGBoost optimization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108168636A (en) * | 2017-11-28 | 2018-06-15 | 中国航发西安动力控制科技有限公司 | RP-3 fuel mass flow measuring methods |
| CN111128312A (en) * | 2019-12-19 | 2020-05-08 | 湖南工业大学 | Zinc oxide volatilization kiln mixed modeling method based on mechanism and support vector machine |
| CN111128312B (en) * | 2019-12-19 | 2022-06-17 | 湖南工业大学 | Zinc oxide volatilization kiln mixed modeling method based on mechanism and support vector machine |
| CN116300666A (en) * | 2023-05-24 | 2023-06-23 | 科大智能物联技术股份有限公司 | Power plant boiler operation control method based on XGBoost optimization |
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| CN105928004B (en) | 2018-04-06 |
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