CN116717788A - Rapid preheating method of alcohol-based fuel self-heating vaporization burner - Google Patents
Rapid preheating method of alcohol-based fuel self-heating vaporization burner Download PDFInfo
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- CN116717788A CN116717788A CN202310697417.7A CN202310697417A CN116717788A CN 116717788 A CN116717788 A CN 116717788A CN 202310697417 A CN202310697417 A CN 202310697417A CN 116717788 A CN116717788 A CN 116717788A
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- 230000008016 vaporization Effects 0.000 title claims abstract description 97
- 239000000446 fuel Substances 0.000 title claims abstract description 91
- 238000009834 vaporization Methods 0.000 title claims abstract description 83
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 84
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000012545 processing Methods 0.000 claims abstract description 23
- 150000002500 ions Chemical class 0.000 claims abstract description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- 238000001514 detection method Methods 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 19
- 238000002309 gasification Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000012937 correction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/44—Preheating devices; Vaporising devices
- F23D11/441—Vaporising devices incorporated with burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/42—Starting devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The application discloses a rapid preheating method of an alcohol-based fuel self-heating vaporization burner, which relates to the technical field of vaporization burners, wherein an ignition oil pipe of an ignition system extends to the inside of the burner, and a pulse generator performs pulse discharge ignition after liquid alcohol-based fuel is input into the burner; the control terminal is matched with the data acquisition unit to monitor the ignition process, flame ions and burner temperature data are obtained, the alcohol-based fuel state data are sent to the data processing unit, after the analysis is carried out by the data processing unit, a combustion-supporting strategy for controlling the ignition combustion-supporting fan in a variable frequency mode is generated, correspondingly matched combustion-supporting air is output into the burner, the lowest temperature required by vaporization work is guaranteed to be reached in the shortest time, and the normal operation stage is entered, so that the function of self-heating vaporization combustion work is realized.
Description
Technical Field
The application relates to the technical field of vaporization combustors, in particular to a rapid preheating method of an alcohol-based fuel self-heating vaporization combustor.
Background
At present, most of energy sources used for combustion in industries such as restaurants are natural gas and liquefied gas, so that the cost is high, and resources are gradually reduced along with energy development. There are also problems of high cost and reduced resources due to the large odor of diesel fuel for combustion, which affects the health of people. Therefore, researchers have developed alcohol-based fuels with low cost and wide resources.
In the Chinese patent with publication number of CN109579076A, a small-sized alcohol-based fuel self-heating vaporization combustion device adopts a technology of realizing self-heating vaporization combustion after liquid alcohol-based fuel is ignited and preheated, and the result is converted into an alcohol-based fuel liquid combustion furnace product with good market reaction effect.
However, the ignition preheating time is too long in use: the main component of the liquid alcohol-based fuel used in the liquid combustion furnace is methanol, the volatility of the liquid methanol is weak especially in the environment of lower than 15 ℃, and longer (more than 60 s) preheating time is needed after the pulse ignition is carried out, so that the liquid alcohol-based fuel can enter a normal running state.
Therefore, the application provides a rapid preheating method of an alcohol-based fuel self-heating vaporization burner.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the application provides a rapid preheating method of an alcohol-based fuel self-heating vaporization burner, which comprises the steps that one end of an ignition system is extended into the burner, and a pulse generator performs pulse discharge ignition on the liquid alcohol-based fuel after the liquid alcohol-based fuel is input into the burner by an oil supply system; the control terminal is matched with the data acquisition unit to monitor the ignition process, flame ions and burner temperature data are obtained, alcohol-based fuel state data are sent to the data processing unit, after the data processing unit analyzes the flame ions and the burner temperature data, a variable frequency control instruction is output to the fan variable frequency control unit, the fan variable frequency control unit controls the combustion-supporting fan to output corresponding matched combustion-supporting air into the burner, the preheating vaporization chamber is ensured to reach the required temperature in the shortest time after ignition, the overlong low-temperature ignition time is avoided, the rapid ignition and the successful preheating under various environments are realized, and the problems in the background technology are solved.
(II) technical scheme
In order to achieve the above purpose, the application is realized by the following technical scheme: the quick preheating method of the alcohol-based fuel self-heating vaporization combustor comprises an oil supply system, an ignition system, a combustor, a control terminal, a data acquisition unit, a data processing unit, an alarm unit and a variable frequency fan, wherein one end of the ignition system extends to the inside of the combustor, after the oil supply system inputs liquid alcohol-based fuel into the combustor, the ignition system carries out pulse discharge ignition on the liquid alcohol-based fuel, and flames preheat the combustor to reach a preset working temperature condition; the control terminal is matched with the data acquisition unit to detect the ignition process, flame ions and burner temperature data are acquired, the flame ions and burner temperature data are sent to the data processing unit, after being analyzed by the data processing unit, the volatilization and vaporization characteristics of methanol at different temperatures are combined, a combustion-supporting strategy is output to the fan variable frequency control unit, the fan variable frequency control unit controls the ignition combustion-supporting fan to change frequency, matched combustion-supporting air is output to enter the burner, the combustion of liquid alcohol-based fuel in the burner is accelerated, and the burner is quickly preheated to reach a preset working temperature.
Further, oil feeding system includes oil tank, oil pump, tee bend minute valve and power, wherein, oil feeding system includes the power, the power is used for providing electric power, the oil tank inside hold and have had liquid alcohol group fuel, oil tank has connected gradually oil pump and tee bend minute valve: the three-way branch valve is characterized in that two channels at the output end of the three-way branch valve are respectively connected with an ignition oil pipe and a vaporization oil pipe, the contact fire oil pipe extends into the ignition chamber, the vaporization oil pipe extends into a ring pipe of the vaporization chamber, the ring pipe of the vaporization chamber is connected with a T-shaped transition pipe, the lower end of the T-shaped transition pipe is connected with a lower conical chamber, and an air injection hole is formed above the conical chamber.
Further, the combustor includes air duct, ignition oil pipe, vaporization oil pipe, ignition room, vaporization room ring canal and lower conical chamber, inlet port, fumarole, wherein, the combustor is including the air duct of horizontal setting one side of air duct is connected with the ignition room, the upper end of ignition room is provided with T type transition pipe, the bottom of T type transition pipe is provided with lower conical chamber, and the fumarole has been seted up to lower conical chamber upper surface.
Further, the ignition system comprises a first pulse generator, an ignition needle, an ignition combustion-supporting fan, an ignition chamber temperature sensor, a fire ion sensor and a vaporization chamber temperature sensor, wherein the ignition system comprises the ignition combustion-supporting fan and the pulse generator, one end of the pulse generator is connected with the ignition needle, the end part of the ignition needle extends to the inside of the ignition chamber, and the ignition combustion-supporting fan is communicated with the ignition chamber through an air duct.
Further, the ignition chamber temperature sensor is arranged at the lower part of the burner and is connected with the ignition chamber, the ignition chamber temperature sensor is arranged at one side of the ignition chamber, the fire ion sensor and the vaporization chamber temperature sensor are arranged above the ignition chamber temperature sensor, one end of the fire ion sensor penetrates through the air inlet hole and extends into the ignition chamber, and the vaporization chamber temperature sensor is arranged at the outer side of the vaporization chamber ring pipe.
Further, the control terminal is connected with the power supply, the control terminal comprises an oil level sensor connecting port and an oil level sensor connecting port, after liquid alcohol-based fuel is injected into the oil tank, the oil level sensor connecting port detects the stock of the liquid alcohol-based fuel in the oil tank, the pulse generator control port is used for pulse ignition of the liquid alcohol-based fuel output by the ignition oil pipe, the three-way branch valve control port is used for cutting off or opening fuel output of the ignition oil pipe and the vaporization oil pipe, the oil pump control port is used for controlling the output fuel quantity of the oil pump, and the fan variable frequency control port is used for controlling the air quantity of the combustion-supporting fan.
Further, the vaporization chamber temperature sensor is connected to the outer side of the vaporization chamber ring pipe at the upper part of the burner, after detecting that the temperature of the vaporization chamber reaches a set value, information is sent to the control terminal, the three-way valve stops supplying oil to the ignition oil pipe, liquid alcohol-based fuel enters the vaporization chamber ring pipe from the vaporization oil pipe, and after being heated and vaporized, the liquid alcohol-based fuel descends to the conical chamber below the chamber through the T-shaped transition pipe and is sprayed out of the air injection hole for combustion.
Further, the data acquisition unit comprises a temperature detection module, a flame intensity detection module and an oil level detection module, wherein when the liquid alcohol-based fuel enters an ignition chamber and is in an ignition state, the temperature detection module detects the temperature of the ignition chamber to obtain a combustion temperature Rt in the ignition chamber, and the flame intensity detection module detects the intensity of flame in the ignition chamber to obtain flame intensity Hq; summarizing the combustion temperature Rt and the flame intensity Hq, and establishing a combustion state data set; the oil level detection module detects an oil amount state in the oil tank.
Further, the data processing unit includes an evaluation module, a judgment module, a selection module and a summary module, wherein the combustion state data set is sent to the evaluation module, dimensionless processing is performed on the combustion temperature Rt and the flame intensity Hq, and the combustion coefficient Rxs is generated according to the following formula:
wherein, the parameter meaning is: f is more than or equal to 0.38 1 ≤0.90，0.58≤F 2 And C is a constant correction coefficient which is less than or equal to 1.22.
Further, the combustion coefficient Rxs is sent to a judging module, the judging module is provided with a combustion threshold, and a combustion strategy library is built by summarizing combustion strategies according to the distribution of the combustion temperature Rt and the flame intensity Hq; when the combustion coefficient Rxs is not greater than the corresponding combustion threshold, the corresponding combustion strategy is selected from the combustion strategy library by the selection module and output by combining the liquid methanol state data in the current ignition chamber; referring to structural parameters of an oil supply system, an ignition system, a combustor and a control terminal, and generating an analysis result; if the analysis result shows that the combustion-supporting strategy is not feasible, the alarm unit alarms outwards, and if the analysis result is feasible, the fan frequency conversion control unit is used for carrying out frequency conversion control on the rotating speed of the ignition combustion-supporting fan, so that the combustion-supporting strategy is executed.
(III) beneficial effects
The application provides a rapid preheating method of an alcohol-based fuel self-heating vaporization burner, which has the following beneficial effects:
1. the ignition chamber temperature sensor is arranged at the lower part of the burner and is connected with the burner ignition chamber, so that temperature information of the burner can be conveniently and accurately detected and sent to the control terminal, the ignition combustion-supporting fan is controlled to work in a variable frequency mode, and the air-oil proportioning effect meeting the preset requirement is obtained.
2. By utilizing the characteristics of volatilization and vaporization of liquid methanol at different temperatures, after the liquid alcohol-based fuel output by the ignition oil pipe is accurately ignited by the pulse generator, the control terminal controls the rotating speed of the combustion-supporting fan in a variable frequency mode according to the temperature signal of the ignition chamber obtained by the ignition chamber temperature sensor, the combustion-supporting fan is prevented from being blown out by small air at lower temperature, the air quantity is easier to properly increase when the temperature gradually increases and the methanol volatilizes and vaporizes, the high-efficiency combustion-supporting air and the ignition oil are compared, the temperature of the vaporization chamber of the burner can quickly reach the working state requirement, the phenomenon of overlong low-temperature ignition time is avoided, and the rapid ignition and preheating success under various environments is realized.
3. When the temperature of the vaporization chamber is detected to reach a set value, the control terminal instructs the three-way split valve to stop supplying oil to the ignition oil pipe, fuel enters the vaporization chamber annular pipe from the vaporization oil pipe, after being heated and vaporized, the fuel descends to the lower conical chamber through the T-shaped transition pipe to be sprayed and combusted, namely, ignition and preheating are successful, the fuel starts to enter a normal operation stage, the fuel pump is controlled to perform variable frequency work through the fuel pump control connecting port, the fire intensity can be regulated, combustion flame continuously heats the vaporization chamber annular pipe, the function of converting liquid alcohol-based fuel into gas for combustion and heat supply is realized, and meanwhile, the combustion-supporting fan stops working and saves electricity.
Drawings
FIG. 1 is a schematic view of a positive cross-sectional structure of a vaporization burner of the present application;
FIG. 2 is a schematic side cross-sectional view of a vaporization burner of the present application;
FIG. 3 is a schematic diagram of the workflow of the vaporization burner of the present application;
in the figure:
10. an oil supply system; 101. an oil tank; 102. an oil pump; 103. a three-way split valve; 104. a power supply; 20. an ignition system; 201. a pulse generator; 202. an ignition needle; 203. an ignition combustion-supporting fan; 204. an ignition chamber temperature sensor; 205. a fire ion sensor; 206. a vaporization chamber temperature sensor;
30. a burner; 301. an air duct; 302. an ignition oil pipe; 303. vaporizing oil pipe; 304. a T-shaped transition pipe; 305. an ignition chamber; 306. a vaporization chamber collar; 307. a lower conical chamber; 308. an air inlet hole; 309. a gas injection hole;
40. a control terminal; 401. an oil level sensor connection port; 402. a pulse generator control connection port; 403. a three-way split valve control connection port; 404. an oil pump control connection port; 405. a fan variable frequency control connection port;
50. a data acquisition unit; 501. a temperature detection module; 502. a flame intensity detection module; 503 an oil level detection module; 60. a data processing unit; 601. an evaluation module; 602. a judging module; 603. a selection module; 604. a summarizing module; 70. an oil pump control unit; 80. an alarm unit; 90. a fan frequency conversion control unit; 100. a pulse control unit; 110. and a valve control unit.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-3, the present application provides a method for quickly preheating an alcohol-based fuel self-heating vaporization burner, which comprises an oil supply system 10, an ignition system 20, a burner 30, a control terminal 40, a data acquisition unit 50, a data processing unit 60, an oil pump control unit 70, an alarm unit 80, a fan variable frequency control unit 90, a pulse control unit 100 and a valve control unit 110, wherein,
one end of the ignition system 20 extends into the combustor 30, after the oil supply system 10 inputs liquid alcohol-based fuel into the combustor 30, the ignition system 20 performs pulse discharge ignition on the liquid alcohol-based fuel, and the flame preheats the combustor 30 to a preset working temperature condition;
detecting an ignition process by the control terminal 40 in combination with the data acquisition unit 50 to acquire flame ions and burner temperature data, sending alcohol-based fuel state data to the data processing unit 60, analyzing by the data processing unit 60, outputting a combustion supporting strategy to the fan variable frequency control unit 90 in combination with volatilization and vaporization characteristics of methanol at different temperatures, and after the liquid alcohol-based fuel is quickly preheated to reach a preset working temperature, controlling the alcohol-based liquid to burn through the gasification oil pipe and enter the burner 30 by the valve control unit 110 to finish the preheating process;
the data acquisition unit 50 monitors the ignition preheating process, and if the flame ions and the burner temperature data cannot reach the state set by the data processing unit 60 after the ignition time is overtime, the data processing unit 60 turns off the system and instructs the alarm unit 80 to alarm, so that the safe operation of the whole system is ensured.
Referring to fig. 1 and 2, the oil supply system 10 includes an oil tank 101, an oil pump 102, a three-way valve 103, and a power source 104, wherein,
the oil supply system 10 comprises a power supply 104, the power supply 104 is used for providing power, a liquid alcohol-based fuel is contained in the oil tank 101, and the oil tank 101 is sequentially connected with an oil pump 102 and a three-way branch valve 103: the two channels at the output end of the three-way branch valve 103 are respectively connected with an ignition oil pipe 302 and a vaporization oil pipe 303, the ignition oil pipe 302 extends into the ignition chamber 305, the vaporization oil pipe 303 extends into a vaporization chamber ring pipe 306, the vaporization chamber ring pipe 306 is connected with a T-shaped transition pipe 304, the lower end of the T-shaped transition pipe 304 is connected with a lower conical chamber 307, and an air injection hole 309 is formed above the conical chamber 307.
In the ignition stage, the liquid alcohol-based fuel enters the ignition chamber 305 through the contact fire oil pipe 302 to be ignited, and the ignition combustion-supporting fan accelerates the combustion of the liquid alcohol-based fuel, so that the generated flame preheats the vaporization chamber ring pipe 306 to reach a set temperature;
in the operation stage, after the liquid alcohol-based fuel entering the vaporizing chamber loop pipe 306 from the vaporizing oil pipe 303 is heated and vaporized, the liquid alcohol-based fuel enters the lower conical chamber 307 through the T-shaped transition pipe 304 and is sprayed and combusted from the air spraying holes 309, so that the flame continuously heats the vaporizing chamber loop pipe 306, and a circulating effect of heating the liquid alcohol-based fuel to combust gas is formed.
Referring to fig. 1 and 2, the burner 30 includes an air duct 301, an ignition oil pipe 302, a vaporization oil pipe 303, an ignition chamber 305, a vaporization chamber collar 306, a lower conical chamber 307, air intake holes 308, air injection holes 309,
the burner 30 comprises a transversely arranged air duct 301, wherein one side of the air duct 301 is connected with an ignition chamber 305, the upper end of the ignition chamber 305 is provided with a T-shaped transition pipe 304, the bottom end of the T-shaped transition pipe 304 is provided with a lower conical chamber 307, and the upper surface of the lower conical chamber 307 is provided with an air injection hole 309;
referring to fig. 1 and 2, the ignition system 20 includes a first pulse generator 201, an ignition needle 202, an ignition combustion fan 203, an ignition chamber temperature sensor 204, a fire ion sensor 205, and a vaporization chamber temperature sensor 206, wherein the ignition system 20 includes the ignition combustion fan 203 and the pulse generator 201, one end of the pulse generator 201 is connected with the ignition needle 202, the end of the ignition needle 202 extends to the inside of the ignition chamber 305, and the ignition combustion fan 203 is communicated with the ignition chamber 305 through an air duct 301.
An ignition chamber temperature sensor 204 is arranged on one side of the ignition chamber 305, a fire ion sensor 205 and a vaporization chamber temperature sensor 206 are arranged above the ignition chamber temperature sensor 204, one end of the fire ion sensor 205 penetrates through an air inlet 308 and extends into the ignition chamber 305, and the vaporization chamber temperature sensor 206 is arranged on the outer side of the vaporization chamber ring pipe 306.
Referring to fig. 1 and 2, the control terminal 40 is connected to the power source 104, and is powered by the power source 104, where the control terminal 40 includes an oil level sensor connection port 401, a pulser control connection port 402, a three-way valve control connection port 403, an oil pump control connection port 404, and a fan variable frequency control connection port 405, where after the liquid alcohol-based fuel is injected into the oil tank 101, the oil level sensor connection port 401 detects the stock of the liquid alcohol-based fuel in the oil tank 101, the oil pump control port 404 controls the output fuel amount of the oil pump, the three-way valve control connection port 403 controls the three-way valve 103 to switch the fuel output of the ignition oil pipe 302 and the vaporization oil pipe 303, the pulser control connection port 402 performs pulse ignition on the liquid alcohol-based fuel output by the ignition oil pipe 302, and the fan variable frequency control port 405 controls the air volume of the combustion fan to obtain a rapid preheating effect.
The ignition needle 202 is connected with the inside of the burner 30 and performs pulse discharge ignition on the liquid alcohol-based fuel input by the ignition oil pipe 302, the temperature in the ignition chamber 305 is fed back to the control terminal 40 by the ignition chamber temperature sensor 204, and the control terminal 40 controls the ignition combustion fan 203 to perform variable frequency operation; the ignition chamber temperature sensor 204, the fire ion sensor 205 and the vaporization chamber temperature sensor 206 obtain signals to monitor the rapid ignition and warm-up of the burner 30.
The ignition chamber temperature sensor 204 is arranged at the lower part of the burner 30 and is connected with the ignition chamber 305, so that temperature information of the combustion chamber can be conveniently and accurately detected and sent to the control terminal 40, the ignition combustion-supporting fan 203 is controlled to work in a variable frequency mode according to volatilization and vaporization characteristics of methanol at different temperatures, an oil distribution proportioning effect meeting preset requirements is obtained, the overlong phenomenon of low-temperature ignition time is avoided, and rapid ignition and preheating success under various environments is realized.
The vaporization chamber temperature sensor 206 is connected to the outside of the vaporization chamber loop 306 at the upper part of the burner 30, after detecting that the temperature of the vaporization chamber reaches a set value, the information is sent to the control terminal 40, so that the three-way valve 103 stops supplying oil to the ignition oil pipe 302, the liquid alcohol-based fuel enters the vaporization chamber loop 306 from the vaporization oil pipe 303, after being heated and vaporized, the liquid alcohol-based fuel flows down to the chamber lower conical chamber 307 through the T-shaped transition pipe 304 and is sprayed out from the air injection hole 309 for combustion, namely, the ignition and the preheating are successful, the operation stage is started, the fire power can be adjusted according to the use requirement, the combustion flame continuously heats the vaporization chamber loop 306, the function of converting the liquid alcohol-based fuel into gas for combustion and heat supply is realized, and then the combustion-supporting fan stops working.
The flame intensity information of the flame ion sensor 205 entering the burner 30 can be combined with the information of the ignition chamber temperature sensor 204 to more accurately judge whether the ignition preheating is successful or not, besides rapidly judging the accident fire extinguishing fault.
Referring to fig. 1 to 3, the data acquisition unit 50 includes a temperature detection module 501, a flame intensity detection module 502 and an oil level detection module 503, wherein when the liquid alcohol-based fuel enters the ignition chamber 305 and is in an ignition state, the temperature detection module 501 detects the temperature of the ignition chamber 305 to obtain the combustion temperature Rt in the ignition chamber 305, and the flame intensity detection module 502 detects the intensity of the flame in the ignition chamber 305 to obtain the flame intensity Hq; summarizing the combustion temperature Rt and the flame intensity Hq, and establishing a combustion state data set; the oil level detection module 503 detects an oil amount state in the oil tank.
The data processing unit 60 includes an evaluation module 601, a judging module 602, a selecting module 603, and a summarizing module 604, wherein the combustion state data set is sent to the evaluation module 601, and the combustion temperature Rt and the flame intensity Hq are dimensionless processed to generate a combustion coefficient Rxs according to the following formula:
wherein, the parameter meaning is: f is more than or equal to 0.38 1 ≤0.90，0.58≤F 2 And C is a constant correction coefficient which is less than or equal to 1.22.
The combustion coefficient Rxs is sent to a judging module 602, the judging module 602 is provided with a combustion threshold, and a combustion strategy is summarized by a summarizing module 604 according to the distribution of the combustion temperature Rt and the flame intensity Hq to establish a combustion strategy library;
when the combustion coefficient Rxs is not greater than the corresponding combustion threshold, the selection module 603 selects and outputs a corresponding combustion-supporting strategy from the combustion-supporting strategy library in combination with the data of the state of the liquid methanol in the current ignition chamber 305, such as the combustion temperature, the flame intensity, the distribution state, and the like, wherein it is to be noted that the combustion-supporting strategy includes parameters such as the rotational speed variable frequency control, the continuous operation time, and the like of the ignition combustion-supporting fan through the fan variable frequency control unit 90.
In the ignition stage, by monitoring the combustion state of the liquid alcohol-based fuel and forming a combustion coefficient Rxs from the monitored data, it is determined whether further combustion is required in the ignition chamber 305 according to the value of the combustion coefficient Rxs.
The control terminal 40 performs frequency conversion control on the rotation speed of the ignition combustion fan 203 through the fan frequency conversion control unit 90, so as to obtain a matched air quantity, obtain a high-efficiency ratio of combustion air to ignition oil, and enable the temperature of the vaporization chamber of the burner to reach a normal working state quickly.
In the ignition stage, after the liquid alcohol-based fuel output by the ignition oil pipe is ignited by pulse, the liquid alcohol-based fuel is volatilized and vaporized poorly at a lower temperature, small wind is supplied to avoid the flame to be blown out, the air quantity is increased more easily and properly when the temperature is gradually increased and methanol is volatilized and vaporized, the control terminal controls the rotating speed of the combustion-supporting fan in a variable frequency mode according to the temperature signal of the ignition chamber temperature sensor, so that the high-efficiency ratio of the combustion-supporting wind to the ignition oil is obtained, the temperature of the annular pipe of the vaporization chamber of the burner can reach the working state requirement quickly, and the quick ignition and the successful preheating under various environments are realized.
In the operation phase: when the temperature of the vaporizing chamber ring pipe is detected to reach a set value, the control terminal instructs the three-way valve to stop supplying oil to the ignition oil pipe, alcohol-based fuel enters the vaporizing chamber ring pipe from the vaporizing oil pipe, after being heated and vaporized, the alcohol-based fuel flows down to the lower conical chamber through the T-shaped transition pipe and is sprayed out from the air injection hole for combustion, the formed flame continuously heats the vaporizing chamber ring pipe, namely, the ignition and the preheating are successful, the normal operation stage is entered, the oil pump is subjected to variable frequency work through the oil pump control connecting port, the fire size can be adjusted, the combustion flame continuously heats the vaporizing chamber ring pipe, the function of converting the liquid alcohol-based fuel into gas for combustion and heat supply is realized, and meanwhile, the combustion-supporting fan stops working and saves electricity.
And (3) carrying out effect test comparison: the experiment is carried out in the room with the same environment temperature of 12 ℃, and the ignition preheating time of a small-sized alcohol-based fuel self-heating vaporization combustion device with the patent number ZL201811563675.1 is 65-70 seconds; after the method for realizing the successful rapid ignition and preheating of the small-sized alcohol-based fuel self-heating vaporization burner is added on the combustion device, the ignition and preheating time is 10-15 seconds, and the ignition and preheating time is greatly improved.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application.
Claims (10)
1. The rapid preheating method of the alcohol-based fuel self-heating vaporization burner is characterized by comprising the following steps of: comprises an oil supply system, an ignition system, a burner, a control terminal, a data acquisition unit, a data processing unit, an oil pump control unit, an alarm unit, a fan variable frequency control unit, a pulse control unit and a valve control unit, wherein,
one end of the ignition system extends to the inside of the burner, and after the oil supply system inputs liquid alcohol-based fuel into the burner, the ignition system performs pulse discharge ignition on the liquid alcohol-based fuel, and the flame preheats the burner to a preset working temperature condition;
detecting an ignition process by a control terminal in combination with a data acquisition unit to acquire flame ions and burner temperature data, sending alcohol-based fuel state data to a data processing unit, analyzing by the data processing unit, outputting a combustion supporting strategy to a fan variable frequency control unit in combination with volatilization and vaporization characteristics of methanol at different temperatures, accelerating combustion of liquid alcohol-based fuel, and controlling the alcohol-based liquid fuel to enter the burner through a gasification oil pipe by a valve control unit after the burner is quickly preheated to reach a preset working temperature so as to finish the preheating process;
the data acquisition unit monitors the ignition preheating process, and if the flame ions and the burner temperature data cannot reach the state set by the data processing unit after the ignition time is overtime, the data processing unit closes the system and instructs the alarm unit to alarm.
2. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 1, wherein: the oil supply system comprises an oil tank, an oil pump, a three-way branch valve and a power supply, wherein,
the oil supply system comprises a power supply, the inside of the oil tank is provided with liquid alcohol-based fuel, and the oil tank is sequentially connected with an oil pump and a three-way branch valve: the two channels of the output end of the three-way branch valve are respectively connected with an ignition oil pipe and a vaporization oil pipe, the ignition oil pipe extends into the ignition chamber, the vaporization oil pipe extends into the ring pipe of the vaporization chamber, the vaporization chamber ring pipe is connected with a T-shaped transition pipe, the lower end of the T-shaped transition pipe is connected with a lower conical chamber, and an air injection hole is formed above the conical chamber.
3. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 1, wherein: the burner comprises an air duct, an ignition oil pipe, a vaporization oil pipe, an ignition chamber, a vaporization chamber ring pipe, a lower conical chamber, an air inlet and an air jet, wherein the burner comprises the air duct which is transversely arranged, one side of the air duct is connected with the ignition chamber, the upper end of the ignition chamber is provided with a T-shaped transition pipe, the bottom end of the T-shaped transition pipe is provided with the lower conical chamber, and the upper surface of the lower conical chamber is provided with the air jet.
4. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 1, wherein: the ignition system comprises a first pulse generator, an ignition needle, an ignition combustion-supporting fan, an ignition chamber temperature sensor, a fire ion sensor and a vaporization chamber temperature sensor, wherein the ignition system comprises the ignition combustion-supporting fan and the pulse generator, one end of the pulse generator is connected with the ignition needle, the end part of the ignition needle extends to the inside of the ignition chamber, and the ignition combustion-supporting fan is communicated with the ignition chamber through an air duct.
5. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 2, wherein: an ignition chamber temperature sensor is arranged on one side of the ignition chamber, a fire ion sensor and a vaporization chamber temperature sensor are arranged above the ignition chamber temperature sensor, one end of the fire ion sensor penetrates through the air inlet and extends into the ignition chamber, and the vaporization chamber temperature sensor is arranged on the outer side of the vaporization chamber ring pipe.
6. A method for rapid warm-up of an alcohol-based fuel self-heating gasification burner according to claim 3, wherein: the control terminal is connected with a power supply and comprises an oil level sensor connecting port, a pulse generator control connecting port, a three-way valve control connecting port, an oil pump control connecting port and a fan variable frequency control connecting port, wherein after liquid alcohol-based fuel is injected into an oil tank, the oil level sensor connecting port is used for detecting the stock of the liquid alcohol-based fuel in the oil tank, the oil pump control port is used for controlling the output fuel quantity of the oil pump, the three-way valve control connecting port is used for controlling the fuel output of the three-way valve switching ignition oil pipe and the vaporization oil pipe, the pulse generator control connecting port is used for carrying out pulse ignition on the liquid alcohol-based fuel output by the ignition oil pipe, and the fan variable frequency control port is used for controlling the air quantity of the combustion-supporting fan to obtain a rapid preheating effect.
7. A method for rapid warm-up of an alcohol-based fuel self-heating gasification burner according to claim 3, wherein: the ignition chamber temperature sensor is arranged at the lower part of the combustor and is connected with the ignition chamber, temperature information of the combustion chamber is rapidly and accurately detected and sent to the control terminal, the ignition combustion-supporting fan is controlled to work in a variable frequency mode according to volatilization and vaporization characteristics of methanol at different temperatures, oil distribution proportioning effect meeting preset requirements is obtained, overlong low-temperature ignition time is avoided, and rapid ignition and preheating success under various environments is achieved.
8. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 1, wherein: the vaporizing chamber temperature sensor is connected to the outer side of the vaporizing chamber loop pipe at the upper part of the burner, after detecting that the temperature of the vaporizing chamber reaches a set value, information is transmitted to the control terminal in parallel, the three-way valve stops oil supply to the ignition oil pipe, liquid alcohol-based fuel enters the vaporizing chamber loop pipe from the vaporizing oil pipe, and after being heated and vaporized, the liquid alcohol-based fuel descends to the conical chamber below the chamber through the T-shaped transition pipe and is sprayed out of the air injection hole for combustion.
9. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 8, wherein: the data acquisition unit comprises a temperature detection module, a flame intensity detection module and an oil level detection module, wherein when liquid alcohol-based fuel enters an ignition chamber and is in an ignition state, the temperature detection module detects the temperature of the ignition chamber to obtain the combustion temperature Rt in the ignition chamber, and the flame intensity detection module detects the intensity of flame in the ignition chamber to obtain the flame intensity Hq; summarizing the combustion temperature Rt and the flame intensity Hq, and establishing a combustion state data set; the oil level detection module detects an oil amount state in the oil tank.
10. The method for rapid warm-up of an alcohol-based fuel self-heating gasification burner of claim 9, wherein: the data processing unit comprises an evaluation module, a judging module, a selecting module and a summarizing module, wherein the combustion state data set is sent to the evaluation module, dimensionless processing is carried out on the combustion temperature Rt and the flame intensity Hq, and the combustion coefficient Rxs is generated according to the following formula:
wherein, the parameter meaning is: f is more than or equal to 0.38 1 ≤0.90，0.58≤F 2 C is a constant correction coefficient which is less than or equal to 1.22;
the combustion coefficient Rxs is sent to a judging module, the judging module is provided with a combustion threshold, and a combustion strategy library is built by summarizing combustion strategies according to the distribution of the combustion temperature Rt and the flame intensity Hq;
when the combustion coefficient Rxs is not greater than the corresponding combustion threshold, the corresponding combustion strategy is selected and output from the combustion strategy library by the selection module in combination with the liquid methanol state data in the current ignition chamber, such as the combustion temperature, the flame intensity, the distribution state and the like, wherein the combustion strategy comprises parameters such as the rotating speed variable frequency control and the continuous working time of the ignition combustion fan through the fan variable frequency control unit.
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| CN202310697417.7A CN116717788A (en) | 2023-06-13 | 2023-06-13 | Rapid preheating method of alcohol-based fuel self-heating vaporization burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310697417.7A CN116717788A (en) | 2023-06-13 | 2023-06-13 | Rapid preheating method of alcohol-based fuel self-heating vaporization burner |
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