CN106287806B - A kind of automatic flow control system and its working method of high temperature combustion furnace - Google Patents
A kind of automatic flow control system and its working method of high temperature combustion furnace Download PDFInfo
- Publication number
- CN106287806B CN106287806B CN201610865119.4A CN201610865119A CN106287806B CN 106287806 B CN106287806 B CN 106287806B CN 201610865119 A CN201610865119 A CN 201610865119A CN 106287806 B CN106287806 B CN 106287806B
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- high temperature
- combustion furnace
- temperature combustion
- flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
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- 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)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention discloses a kind of automatic flow control system of high temperature combustion furnace, it is characterized in that, it include: air supply unit, automatically controlled throttle valve, flow detector, control unit and high temperature combustion furnace, the air supply unit is connect with the automatically controlled throttle valve, the automatically controlled throttle valve and the high temperature combustion furnace piping connection, and the flow detector is equipped between the pipeline, described control unit receives the data of the flow detector, and controls the aperture of the automatically controlled throttle valve.The working method for the automatic flow control system based on this high temperature combustion furnace that invention additionally discloses a kind of.The present invention reduces influence of the high temperature combustion furnace gas backpressure to flow by flow automatic control, and control precision is high, and stability is good, and adaptivity is strong, reduces human intervention, to improve the degree of automation of system.
Description
Technical field
The invention belongs to flow automation fields, and in particular to it is a kind of reduce high temperature combustion furnace gas backpressure flow from
Autocontrol system and its working method.
Background technique
In high temperature combustion furnace work, continuous due to the accumulation degree of the variation of its internal temperature and waste material residue adds
Play needs constantly to be corrected so that the gas backpressure of whole system constantly changes so as to cause the flow regulated before.
In the prior art, gas flow is adjusted generally manually adjusts by the way of, and uninterrupted needs eye-observation
The reading of mechanical flow detection device.Specifically, gas enters from air supply unit, each road gas is adjusted by throttle valve (group)
Flow, flow can be observed respectively by mechanical flow detection device, then manually adjust the folding size of each throttle valve, obtain each road
The setting flow of gas opens/closes gas flow required for being combined into high temperature combustion furnace finally by solenoid valve.And
And under the social environment of energy-saving safety, there is stringent limitation for the size of high temperature combustion furnace, so that the air inlet under separate mode
Unit and feed unit size are strictly limited, general to be met the requirements using volume is reduced, and (are greater than 2L/ so as to cause big air-flow
Min the back pressure) under state is very big, and amount of back pressure is directly proportional to gas flow adjustable range, i.e. the flow controlled range of system subtracts
It is small.
The mode for manually adjusting gas flow of the prior art, uninterrupted need eye-observation mechanical flow detection device
Reading, and mechanical flow detection device reads inaccurate (mechanical flow detection device one under the operating condition that output has gas backpressure
As require output be a standard atmospheric pressure), cause gas regulation process cumbersome.
Summary of the invention
(1) technical problems to be solved
Cause reading inaccurate for the mode for needing to manually adjust gas flow in the prior art, operating process is complicated to ask
Topic, the present invention provide the automatic flow control system and its working method of a kind of high temperature combustion furnace.
(2) technical solution
A kind of automatic flow control system for reducing high temperature combustion furnace gas backpressure of the present invention, including it is air supply unit, automatically controlled
Throttle valve, flow detector, control unit and high temperature combustion furnace, the air supply unit are connect with the automatically controlled throttle valve, institute
Automatically controlled throttle valve and the high temperature combustion furnace piping connection are stated, and is equipped with the flow detector, institute between the pipeline
It states control unit and receives the data of the flow detector, and control the aperture of the automatically controlled throttle valve.
Wherein, the flow detector is flow sensor or digital flowmeter.
Wherein, the automatically controlled throttle valve is proportioning valve or servo valve.
Wherein, the high temperature combustion furnace includes burner hearth, air admission unit, feed unit and exhaust unit, and the burner hearth passes through
The air admission unit is connect with the air supply unit, and the feed unit and the exhaust unit are connect with the burner hearth respectively.
Wherein, cyclic structure is equipped in the burner hearth, the feed unit and the air admission unit are respectively connected to the ring
Shape structure forms the nested structure of pan feeding and air inlet, and the cyclic structure is equipped with multiple micropores, conveys gas for air admission unit
Body is contacted with pan feeding.
Wherein, the cyclic structure is multilayer cyclic structure.
Wherein, described control unit includes microprocessor and PLC.
Invention additionally discloses the working methods of the automatic flow control system of this high temperature combustion furnace, and its step are as follows:
S1, gas successively enter the high temperature combustion furnace, the stream by the automatically controlled throttle valve and flow detector
Amount detecting device detection gas flow, and gas flow signals are fed back into control unit；
After S2, described control unit receive gas flow signals, the aperture of automatically controlled throttle valve is controlled, to control gas
Flow.
(3) beneficial effect
The present invention discloses the automatic flow control system and its working method of a kind of high temperature combustion furnace, and the present invention passes through flow
Monitoring device monitors gas flow, and receives its data by control unit, the aperture of automatically controlled throttle valve is controlled, to realize flow
It automatically controls, influence of the high temperature combustion furnace gas backpressure to flow is reduced by flow automatic control, control precision is high, stablizes
Property is good, and adaptivity is strong, reduces human intervention, to improve the degree of automation of system.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the automatic flow control system of high temperature combustion furnace of the present invention；
Fig. 2 is a kind of high temperature combustion furnace burner hearth inner annular structure of the automatic flow control system of high temperature combustion furnace of the present invention
Schematic diagram.
In figure: 1, air supply unit；2, automatically controlled throttle valve；3, flow detector；4, control unit；5, high temperature combustion furnace；
6, feed unit；7, air admission unit；8, exhaust unit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention discloses a kind of automatic flow control system of high temperature combustion furnace, including air supply unit 1, electricity
Control throttle valve 2, flow detector 3, control unit 4 and high temperature combustion furnace 5, the air supply unit 1 and the automatically controlled throttle valve 2
Connection, the automatically controlled throttle valve 2 and 5 piping connection of high temperature combustion furnace, and be equipped with the flow between the pipeline and examine
Device 3 is surveyed, described control unit 4 receives the data of the flow detector 3, and controls the aperture of the automatically controlled throttle valve 2.
Gas is entered by air supply unit 1, and air supply unit 1 is made of conduit and gas pretreatment unit etc., and flow detector 3 can detect
The numerical value of gas flow is simultaneously received by control unit 4, and control unit 4 is judged according to actual conditions, and controls automatically controlled throttling
The size of 2 aperture of valve is to control the size of gas flow.
The present invention provides a kind of automatic flow control system of high temperature combustion furnace, adds on the basis of high temperature combustion furnace
Automatic flow control system, the data of flow detector are received by control unit, and control the aperture of automatically controlled throttle valve, with
The automatic control for realizing flow, influence of the high temperature combustion furnace gas backpressure to flow is reduced by flow automatic control, is controlled
Precision is high, and stability is good, and adaptivity is strong, reduces human intervention, to improve the degree of automation of system.
Wherein, the flow detector 3 is flow sensor or digital flowmeter.It can be led in those skilled in the art
In the case where realizing, all gas flow 3 its received devices of data energy controlled unit 4 of can detecte belong to the present embodiment
Flow detector, such as: various gas flow sensors；It is differential pressure flowmeter, spinner flowmeter, restriction flowmeter, thin
Stitch flowmeter, mechanical indicating pointer flowmeter, non-return type pointer flowmeter, volume-displacement, electromagnetic flowmeter and ultrasonic flow
Meter utilizes and installs Digital Signal Processing (DSP) and microprocessor additional with flow meter, this makes flowmeter have self diagnosis function
Can, and can preferably be communicated with production control plane, i.e., the gas flow data measured is converted to digital signal,
To facilitate control unit to receive and judgement.
Wherein, the automatically controlled throttle valve 2 is proportioning valve or servo valve.Automatically controlled throttle valve 2 in the present embodiment can be controlled
Unit 4 processed controls its aperture.It is, in general, that servo valve is all closed-loop control, proportioning valve is chiefly used in opened loop control；Secondly proportioning valve
Type wants more, proportional pressure, flow control valve etc., controls more flexible than servo.In terms of their internal structures, servo valve
It is mostly zero lap, proportioning valve then has certain dead zone, and control precision wants low, and response is slow.The two performance difference is gradually reducing,
In addition the cost of proportioning valve is more much lower than servo valve, and contamination resistance is also strong.And the driving device of the two is different.Proportioning valve
Driving device be proportion electro-magnet；The driving device of servo valve is force motor or torque-motor.So according to the actual situation may be used
To select proportioning valve or servo valve.
As depicted in figs. 1 and 2, the high temperature combustion furnace 5 includes burner hearth, air admission unit 7, feed unit 6 and exhaust unit
8, the burner hearth is connect by the air admission unit 7 with the air supply unit 1, and the feed unit 6 and the exhaust unit 8 divide
It is not connect with the burner hearth.Out of, feed unit 6 enters high temperature combustion furnace 5 burner hearth, gas is entered fuel by air supply unit 1
Air admission unit 7 to high temperature combustion furnace 5 participates in burning, and after burned, exhaust gas is discharged from exhaust unit 8.
As shown in Fig. 2, being equipped with cyclic structure in the burner hearth, the feed unit 6 is respectively connected to the air admission unit 7
The cyclic structure forms the nested structure of pan feeding and air inlet, and the cyclic structure is equipped with multiple micropores, is used for air admission unit
7 conveying gases are contacted with pan feeding.Such as: air admission unit 7 is connect with the outer ring of cyclic structure, feed unit 6 and cyclic structure
Inner ring connection, gas are come into full contact with by the micropore in cyclic structure with fuel.By 7 He of air admission unit for improving high temperature combustion furnace
Feed unit 6 reduces the gas backpressure of system part, increases the controlled range of flow.
Wherein, the cyclic structure can be multilayer loop shape structure.The multi-layer gas structure nested with fuel is formed, to reach
To the effect of the better gas backpressure for reducing system part, increase the controlled range of flow.
Wherein, described control unit 4 includes microprocessor and PLC (programmable controller).Control unit 4 receives flow inspection
The data of device 3 are surveyed, and operation are carried out by PLC, then control the aperture of automatically controlled throttle valve 2.
The working method for the automatic flow control system based on this high temperature combustion furnace that invention additionally discloses a kind of, step is such as
Under:
S1, gas successively enter the high temperature combustion furnace, the stream by the automatically controlled throttle valve and flow detector
Amount detecting device detection gas flow, and gas flow signals are fed back into control unit；
After S2, described control unit receive gas flow signals, the aperture of automatically controlled throttle valve is controlled, to control gas
Flow.
The present invention discloses the automatic flow control system and its working method of a kind of high temperature combustion furnace, in high temperature combustion furnace
On the basis of add automatic flow control system, high temperature combustion furnace gas backpressure is reduced by flow automatic control to flow
It influences, control precision is high, and stability is good, and adaptivity is strong, reduces human intervention, to improve the automation journey of system
Degree.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of automatic flow control system of high temperature combustion furnace characterized by comprising air supply unit (1), automatically controlled throttle valve
(2), flow detector (3), control unit (4) and high temperature combustion furnace (5), the air supply unit (1) and the automatically controlled throttling
Valve (2) connection, the automatically controlled throttle valve (2) and the high temperature combustion furnace (5) piping connection, and institute is equipped between the pipeline
It states flow detector (3), described control unit (4) receives the data of the flow detector (3), and controls described automatically controlled
The aperture of throttle valve (2)；
The high temperature combustion furnace (5) includes burner hearth, air admission unit (7), feed unit (6) and exhaust unit (8), and the burner hearth is logical
The air admission unit (7) is crossed to connect with the air supply unit (1), the feed unit (6) and the exhaust unit (8) respectively with
The burner hearth connection；
Cyclic structure is equipped in the burner hearth, the feed unit (6) and the air admission unit (7) are respectively connected to the cyclic annular knot
Structure forms the nested structure of pan feeding and air inlet, and the cyclic structure is equipped with multiple micropores, conveys gas for air admission unit (7)
Body is contacted with pan feeding；
The cyclic structure is multilayer cyclic structure.
2. the automatic flow control system of high temperature combustion furnace according to claim 1, which is characterized in that the flow detection
Device (3) is flow sensor or digital flowmeter.
3. the automatic flow control system of high temperature combustion furnace according to claim 1, which is characterized in that the automatically controlled throttling
Valve (2) is proportioning valve or servo valve.
4. the automatic flow control system of high temperature combustion furnace according to claim 1, which is characterized in that described control unit
It (4) include microprocessor and PLC.
5. a kind of working method of the automatic flow control system of high temperature combustion furnace, which is characterized in that using such as claim 1-4
Any one of described in high temperature combustion furnace automatic flow control system working method, include the following steps:
S1, gas successively enter the high temperature combustion furnace, the flow inspection by the automatically controlled throttle valve and flow detector
Device detection gas flow is surveyed, and gas flow signals are fed back into control unit；
After S2, described control unit receive gas flow signals, the aperture of automatically controlled throttle valve is controlled, to control gas stream
Amount.
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| CN201610865119.4A CN106287806B (en) | 2016-09-29 | 2016-09-29 | A kind of automatic flow control system and its working method of high temperature combustion furnace |
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| CN201610865119.4A CN106287806B (en) | 2016-09-29 | 2016-09-29 | A kind of automatic flow control system and its working method of high temperature combustion furnace |
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| CN106287806B true CN106287806B (en) | 2019-01-08 |
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| CN111102173B (en) * | 2019-12-31 | 2024-01-26 | 中国科学院合肥物质科学研究院 | Vacuum air inlet system and air inlet control method |
| CN114352533B (en) * | 2022-01-24 | 2023-11-21 | 南通市红星空压机配件制造有限公司 | Control method for electric air inlet valve of mobile air compressor |
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| CN206160190U (en) * | 2016-09-29 | 2017-05-10 | 长沙开元仪器股份有限公司 | High temperature fires burning furnace's flow automatic control system |
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| GB0025231D0 (en) * | 2000-10-14 | 2000-11-29 | Univ Coventry | Air/fuel ratio control |
| CN1548805A (en) * | 2003-05-15 | 2004-11-24 | 株式会社庆东Boiler | Air ratio control boiler |
| KR100681386B1 (en) * | 2005-01-12 | 2007-02-09 | 주식회사 경동네트웍 | Combustion apparatus using air fuel ratio sensor |
| JP5370457B2 (en) * | 2011-10-13 | 2013-12-18 | 三浦工業株式会社 | Heating medium boiler |
| CN204404167U (en) * | 2015-01-08 | 2015-06-17 | 郭小山 | The Novel hearth generator of combustor |
| CN105805742A (en) * | 2016-05-24 | 2016-07-27 | 成都中冶节能环保工程有限公司 | Intelligent control system for remotely monitoring ceramic kiln |
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| CN206160190U (en) * | 2016-09-29 | 2017-05-10 | 长沙开元仪器股份有限公司 | High temperature fires burning furnace's flow automatic control system |
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Effective date of registration: 20190530 Address after: No. 1259 Liangtang East Road, Xingsha Industrial Base (Changlong Street), Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Changsha Kaiyuan Instruments Co.,Ltd. Address before: 410100 No. 172 Kaiyuan Road, Changsha economic and Technological Development Zone, Hunan Patentee before: CHANGSHA KAIYUAN INSTRUMENTS Co.,Ltd. |
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Denomination of invention: Automatic flow control system of high-temperature combustion furnace and working method of control system Effective date of registration: 20200615 Granted publication date: 20190108 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: CHANGSHA KAIYUAN INSTRUMENTS Co.,Ltd. Registration number: Y2020980003086 |
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Date of cancellation: 20230717 Granted publication date: 20190108 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: Changsha Kaiyuan Instruments Co.,Ltd. Registration number: Y2020980003086 |