CN204460275U - A kind of combustion energy saving safety control system - Google Patents
A kind of combustion energy saving safety control system Download PDFInfo
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- CN204460275U CN204460275U CN201420863681.XU CN201420863681U CN204460275U CN 204460275 U CN204460275 U CN 204460275U CN 201420863681 U CN201420863681 U CN 201420863681U CN 204460275 U CN204460275 U CN 204460275U
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Abstract
The utility model relates to a kind of combustion energy saving safety control system, and comprise the combustion apparatus of band burner and flue, be provided with blower fan in the air inlet of described burner, the gas inlet of burner is connected with fuel gas source pipeline; The air inlet of burner is serially connected with blast regulator, and the pipeline that burner is connected with fuel gas source is provided with gas-flow regulator, and described blower fan, blast regulator and gas-flow regulator are controlled by a terminal control unit; Be provided with in described flue to comprise and detect O in flue gas
2, CO, CH
4the sensor group of components and concentration and flue-gas temperature, described sensor group feedback link is to terminal control unit; Terminal control unit network is connected to supervision center cloud data processing platform (DPP).The utility model solves the problem that existing combustion apparatus is difficult to realize accurately controlling, and ensure that the energy-saving safety operating of combustion system.
Description
Technical field
The utility model relates to combustion system technology, specifically a kind of combustion energy saving safety control system.
Background technology
The burning debugging of current gas fired-boiler, normally debugged with visually observing by staff, its combustion position is determined by the experience of staff completely, and it is often debugged burning with the color of flame and shape, and this subjectivity regulation and control often all do not reach desirable combustion position.Analyze although Ye You unit also carries out detection by equipment such as flue gas analyzers to smoke components, and regularly adjust the air-fuel ratio of burner accordingly, but combustion conditions is real-time change all the time, such as natural pressure fluctuation is together with the flow of scale effect natural gas, so that in most running time, air-fuel ratio is in fact in runaway condition.
And air-fuel ratio is out of control normally because oxygen debt burning or oxygen-excess combustion cause.When oxygen debt burning, natural gas can not get Thorough combustion, and combustible gas cognition rolls up, and portion of natural gas just can emit without Thorough combustion.This situation naked eyes cannot be discovered substantially, only when very serious, just there will be over-emitting black exhaust phenomenon, but at this moment waste of fuel more than 20%.And when oxygen-excess combustion, naked eyes then can't see any exception, oxygen-excess combustion is very large on the impact of boiler efficiency, and excess air coefficient is larger, energy consumption is higher.In actual motion, the situation of gas fired-boiler excess air coefficient more than 1.5 is very general.
National standard " gas fired-boiler technical specification TSG G0003-2010 " requires that excess air factor is less than 1.15, but in fact, current gas fired-boiler debugging and operation are substantially all to reach the state of a little catching fire, not smoldering.Meanwhile, the oxygen content of Standard boiler smoke should control 1% ~ 3%, but due to reasons such as gas ductwork pressure oscillations, traditional boiler combustion control mode can not adjust combustion position completely in good time, causes in most of the cases combustion conditions to worsen.
Therefore, carrying out online real-time adaptive control to the combustion process of combustion apparatus, is the effective way improving efficiency of combustion and combustion safety to improve combustion conditions.A kind of boiler automatic combustion energy saving control method and energy conserving system disclosed in CN 103486608 A, it is by the blow rate required of Frequency Converter Control air blast and/or the coal-supplying amount of feeder, until the detected value of described flue gas oxygen content is in described setting range.But, VFC is carried out to air blast, no doubt can increase/checking amount according to the size of gas quantity, the working curve of air blast can be changed also, change the pressure in combustion chamber, the stability of burning may be affected.
In addition, the security of combustion system is also a problem demanding prompt solution.Current combustion system nearly all has purging function, and object is purged totally by fuel gas residual in combustion apparatus burner hearth, and then automatic ignition.But in actual motion, if burnt gas valve has leakage, although through purging, fuel gas still may cause potential safety hazard through valve leak in burner hearth.At present, some big-and-middle-sized burners have installed gas leakage device additional and whether burnt gas valve have been leaked detect before ignition, detected qualified ability starting ignition flow process, but when gas leakage plant failure still may appearance point fiery fried.
Utility model content
The purpose of this utility model is to provide a kind of combustion energy saving safety control system, and it can solve the problem that existing combustion system is difficult to realize accurately controlling.
The technical solution of the utility model is as follows:
A kind of combustion energy saving safety control system, comprise the combustion apparatus of band burner and flue, be provided with blower fan in the air inlet of described burner, the gas inlet of burner is connected with fuel gas source pipeline.The air inlet of described burner is serially connected with blast regulator, and the pipeline that burner is connected with fuel gas source is provided with gas-flow regulator, and described blower fan, blast regulator and gas-flow regulator are controlled by a terminal control unit.Be provided with in described flue to comprise and detect O in flue gas
2, CO, CH
4the sensor group of components and concentration and flue-gas temperature, described sensor group feedback link is to terminal control unit.Terminal control unit network is connected to supervision center cloud data processing platform (DPP).
Further, described blast regulator comprises frame body, described frame body comprises air channel, the one end in described air channel is the air duct joint be connected with air inlet of combustor, the other end in air channel is air inlet of air duct, the built-in air door controllable register in air channel, the external air door executer in air channel, air door controllable register is controlled by the air quantity regulating connecting rod be connected with air door executer, described air door executer and terminal control unit control connection.
Further, described gas-flow regulator comprises the gas pressure gage from fuel gas source to gas inlet, gas filter, gas pressure regulating valve, gas cut-off valve and the gas consumption adjusting valve that set gradually from, gas pressure gage and terminal control unit communicate to connect, gas pressure regulating valve, gas cut-off valve and gas consumption adjusting valve and terminal control unit control connection.
Further, described burner is provided with the start stop switch being controlled by terminal control unit.
Control system of the present utility model, on the basis of existing system, detects the O in discharge flue gas with certificate
2, CO components and concentration, by setting up blast regulator and gas-flow regulator, realize burner to the accurate control of air quantity and gas quantity, the air capacity of combustion chamber is entered by blast regulator regulation and control, avoid the problem that frequency conversion control blower fan causes chamber pressure to change, ensure that the stability of system cloud gray model.And form industry control network with supervision center cloud data processing platform (DPP) network, real time on-line monitoring combustion conditions, and record and analytic combustion floor data, thus the exception of anticipation in time and discovery combustion apparatus, by computer terminal or mobile terminal timely coaching device attendant scientific procedures and correct maintenance combustion apparatus, guarantee that every duty parameter of combustion apparatus reaches best, realize the energy-conservation and safe operation of combustion apparatus.And in real time according to CH
4components and concentration controls the break-make of gas supply, ensures the safe operation of system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model system;
Fig. 2 is the control planning figure between terminal control unit and combustion apparatus;
Fig. 3 is the structural representation of the utility model combustion apparatus;
Fig. 4 is the structural representation of the utility model blast regulator;
Fig. 5 is the structural representation of the utility model gas-flow regulator.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
As depicted in figs. 1 and 2.A kind of combustion energy saving safety control system, blast regulator 3 and gas-flow regulator 4 are set up in the basis of existing burner 1, make terminal control unit 5 as control end on the spot except regulating and controlling the blower fan in existing burner 1 air inlet, also regulate and control blast regulator 3 and gas-flow regulator 4.The air inlet that blast regulator 3 is serially connected in existing burner 1 carries out tune wind, is convenient to the precise controlling of air quantity.Gas-flow regulator 4 changes the present situation existing burner 1 gas inlet pipeline lacking Flow-rate adjustment, and it is arranged so that gas quantity is modulated on gas inlet pipe.The controling parameters of terminal control unit 5 is the exhaust gas components that burning is discharged, and for this reason, arranges and detect O in flue 2
2, CO, CH
4the sensor of components and concentration and flue-gas temperature, the sensor detecting other fuel gas components and concentration is even set, terminal control unit 5 is according to the Monitoring Data of sensor Real-time Feedback, what regulate in blower fan, blast regulator 3 and gas-flow regulator 4 is one or more, reach the finely regulating of air-fuel ratio, terminal control unit 5 also forms industry control network with supervision center cloud data processing platform (DPP), conveniently carries out sharing to the combustion conditions of system and analyzes, to improve the efficiency of management.
The terminal control unit 5 of native system is connected in parallel with the original combustion control system of burner, do not substitute original combustion control system, only on the basis of original combustion control system, according to the specific component concentration detected in discharge flue gas to control blast regulator 3 thus accurate intake, or the gas regulator 4 controlled on air inlet pipeline thus accurate air inflow.
Blast regulator 3 is as the adjusting device of giving air quantity, its concrete a kind of embodiment can be as shown in Figure 3 and Figure 4, air channel 34 up/down perforation of its frame body, the upper port in air channel 34 is the air duct joint 35 be connected with burner 1 air inlet, air channel 34 supports unsettled by support 31, and the lower port in air channel 34 is unsettled.The built-in air door controllable register 36 in air channel 34, the external air door executer driven by servomotor 33 in air channel 34, air door controllable register 36 is controlled by air quantity regulating connecting rod 32, and air quantity regulating connecting rod 32 controls by air door executer, and air door executer controls by terminal control unit 5.
The concrete structure of gas-flow regulator 4 as shown in Figure 3 and Figure 5, it comprises the gas pressure gage 41 from fuel gas source to gas inlet, gas filter 42, gas pressure regulating valve 43, gas cut-off valve 44 and the gas consumption adjusting valve 45 that set gradually from, gas pressure force value can be transferred to terminal control unit 5 by gas pressure gage 41, and gas pressure regulating valve 43, gas cut-off valve 44 and gas consumption adjusting valve 45 all control by terminal control unit 5.
Terminal control unit 5 is according to the CH in the flue gas of Real-Time Monitoring
4concentration, judges CH
4whether concentration exceedes preset value, and when CH4 concentration exceedes preset value, its main control unit controls gas cut-off valve 44 automatically to cut off source of the gas, and onsite alarming and upload warning message to supervision center cloud data processing platform (DPP).
The main control unit of native system terminal control unit 5 can be single-chip microcomputer of the prior art, also can be PLC or PC, it can calculate and record combustion exhaust gas heat loss, loss of the inadequacy burning for chemistry mechanics reason, smoke evacuation acid dew point etc. within any cycle, reacts more combustion conditions.Sensor group 6 detects O except comprising
2outside the sensor of content, fuel gas content and flue-gas temperature, also can set up the sensor of the gas ingredients content such as nitride, be detected parameters more comprehensively.Sensor except being arranged on flue 2, also can be in burner hearth or smoke box medium.When for boiler-type burner; corresponding boiler set temperature sensor, temperature anomaly when dry combustion method appears in boiler, the abnormal temperature value that terminal control unit is detected by temperature sensor controls start stop switch; and then cut off the break-make of burner power supply when dry combustion method, protection boiler.
The burner of native system can be mechanical blowing-type (combustion gas/fuel oil) burner, also can be injection gas burner; Described combustion apparatus can be boiler, heating furnace, heating agent oil oven and other industrial furnaces.
Combustion energy saving safety control system running is as follows:
Sensor group detects the O in flue gas
2, CO, CH
4the temperature of combustion chamber in components and concentration, flue-gas temperature and burner, by signal feedback to terminal control unit;
By terminal control unit according to the O in flue gas
2, CO, CH
4components and concentration, to blower fan, blast regulator and gas-flow regulator send perform instruction, Field adjustment burner give air quantity and gas quantity, determine CH simultaneously
4when components and concentration exceeds standard, start to gas cut-off valve the instruction interrupting gas supply, control gas cut-off valve and cut off source of the gas, when determining the temperature exceeding standard of combustion chamber, instruction out of service is sent to burner, and onsite alarming and upload warning message to supervision center cloud data processing platform (DPP);
The display of terminal control unit scene and the O stored in flue gas
2, CO, CH
4the temperature data of components and concentration, flue-gas temperature and combustion chamber, and to obtaining heat loss due to unburned gas, heat loss due to exhaust gas, efficiency of combustion, accumulative energy-saving benefit and combustion position analysis report after data processing and being uploaded to supervision center cloud data processing platform (DPP);
Supervision center cloud data processing platform (DPP) generates combustion apparatus according to the field data received and runs and maintenance guidance report, carries out scene interfere control by the computer terminal or mobile terminal being sent to field device operation attendant with coaching device Operation and Maintenance personnel.
Terminal control unit regulates specifically comprising the steps: to air quantity and gas quantity of burner
Step a: judge the type of burner by terminal control unit, if burner be mechanical linkage type burner or electronics than tune type burner, then enter step b, all the other burner types then enter steps d;
Step b: the gaseous-pressure detecting burner gas inlet, if gaseous-pressure is stablized, terminal control unit controls blast regulator according to the oxygen content in flue gas and/or fuel gas content automatically, adjusting air-fuel ratio; If gaseous-pressure is unstable, then enter step c;
Step c: terminal control unit, according to oxygen content in flue gas and/or fuel gas content, first regulates blast regulator, carries out coarse adjustment to intake, then realize carrying out accurate adjustment, with adjusting air-fuel ratio to intake by variable frequency adjustment blower fan;
Steps d: terminal control unit according to oxygen content in flue gas and/or fuel gas content, by adjustment of combustion gas flow adjuster adjustment of combustion gas flow, with adjusting air-fuel ratio.
Claims (4)
1. a combustion energy saving safety control system, comprise the combustion apparatus of band burner and flue, blower fan is provided with in the air inlet of described burner, the gas inlet of burner is connected with fuel gas source pipeline, it is characterized in that: the air inlet of described burner is serially connected with blast regulator, the pipeline that burner is connected with fuel gas source is provided with gas-flow regulator, and described blower fan, blast regulator and gas-flow regulator are controlled by a terminal control unit; Be provided with in described flue to comprise and detect O in flue gas
2, CO, CH
4the sensor group of components and concentration and flue-gas temperature, described sensor group feedback link is to terminal control unit; Terminal control unit network is connected to supervision center cloud data processing platform (DPP).
2. a kind of combustion energy saving safety control system according to claim 1, it is characterized in that: described blast regulator comprises frame body, described frame body comprises air channel, the one end in described air channel is the air duct joint be connected with air inlet of combustor, the other end in air channel is air inlet of air duct, the built-in air door controllable register in air channel, the external air door executer in air channel, air door controllable register is controlled by the air quantity regulating connecting rod be connected with air door executer, described air door executer and terminal control unit control connection.
3. a kind of combustion energy saving safety control system according to claim 1 and 2, it is characterized in that: described gas-flow regulator comprises the gas pressure gage from fuel gas source to gas inlet, gas filter, gas pressure regulating valve, gas cut-off valve and the gas consumption adjusting valve that set gradually from, gas pressure gage and terminal control unit communicate to connect, gas pressure regulating valve, gas cut-off valve and gas consumption adjusting valve and terminal control unit control connection.
4. a kind of combustion energy saving safety control system according to claim 1 and 2, is characterized in that: described burner is provided with the start stop switch being controlled by terminal control unit.
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| CN201420863681.XU CN204460275U (en) | 2014-12-31 | 2014-12-31 | A kind of combustion energy saving safety control system |
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| CN201420863681.XU CN204460275U (en) | 2014-12-31 | 2014-12-31 | A kind of combustion energy saving safety control system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534505A (en) * | 2014-12-31 | 2015-04-22 | 重庆川然节能技术有限公司 | Energy-saving and safe burning control system and method |
| CN105002373A (en) * | 2015-07-31 | 2015-10-28 | 龙桂山 | Energy-saving crude zinc smelting furnace |
| CN106016346A (en) * | 2016-05-28 | 2016-10-12 | 许昌东方热力有限公司 | High-efficiency automatic boiler air volume adjusting device |
| CN106524219A (en) * | 2016-12-19 | 2017-03-22 | 大连圣鼎工业装备有限公司 | Environment-friendly automatic control low-index emission gas boiler unit |
| CN106765106A (en) * | 2017-01-14 | 2017-05-31 | 河北宏龙环保科技有限公司 | A kind of low nitrogen oxide burner |
| CN107165613A (en) * | 2017-07-07 | 2017-09-15 | 新疆国利衡清洁能源科技有限公司 | Safety guarantee system for underground coal gasification mine type gasification furnace and implementation method |
| CN107387155A (en) * | 2017-09-11 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | A kind of coal bed gas automatic blending control system and regulation and control method |
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
| CN110853304A (en) * | 2019-11-11 | 2020-02-28 | 山东凤祥股份有限公司 | Gas boiler leakage detection alarm system and method |
| CN111578297A (en) * | 2020-05-19 | 2020-08-25 | 孔进占 | Carbonization combustion exhaust treatment device |
| CN111947142A (en) * | 2019-05-14 | 2020-11-17 | 广东万和新电气股份有限公司 | Full-premixing gas device and working method thereof |
| CN111940482A (en) * | 2020-07-02 | 2020-11-17 | 上海市政工程设计研究总院（集团）有限公司 | Air-fuel ratio control method for in-situ gas thermal desorption remediation of polluted soil |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534505A (en) * | 2014-12-31 | 2015-04-22 | 重庆川然节能技术有限公司 | Energy-saving and safe burning control system and method |
| CN105002373A (en) * | 2015-07-31 | 2015-10-28 | 龙桂山 | Energy-saving crude zinc smelting furnace |
| CN106016346A (en) * | 2016-05-28 | 2016-10-12 | 许昌东方热力有限公司 | High-efficiency automatic boiler air volume adjusting device |
| CN106524219A (en) * | 2016-12-19 | 2017-03-22 | 大连圣鼎工业装备有限公司 | Environment-friendly automatic control low-index emission gas boiler unit |
| CN106765106A (en) * | 2017-01-14 | 2017-05-31 | 河北宏龙环保科技有限公司 | A kind of low nitrogen oxide burner |
| CN107165613A (en) * | 2017-07-07 | 2017-09-15 | 新疆国利衡清洁能源科技有限公司 | Safety guarantee system for underground coal gasification mine type gasification furnace and implementation method |
| CN107387155A (en) * | 2017-09-11 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | A kind of coal bed gas automatic blending control system and regulation and control method |
| CN111947142A (en) * | 2019-05-14 | 2020-11-17 | 广东万和新电气股份有限公司 | Full-premixing gas device and working method thereof |
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
| CN110853304A (en) * | 2019-11-11 | 2020-02-28 | 山东凤祥股份有限公司 | Gas boiler leakage detection alarm system and method |
| CN111578297A (en) * | 2020-05-19 | 2020-08-25 | 孔进占 | Carbonization combustion exhaust treatment device |
| CN111578297B (en) * | 2020-05-19 | 2022-05-24 | 丰镇市华兴化工有限公司 | Carbonization combustion exhaust treatment device |
| CN111940482A (en) * | 2020-07-02 | 2020-11-17 | 上海市政工程设计研究总院（集团）有限公司 | Air-fuel ratio control method for in-situ gas thermal desorption remediation of polluted soil |
| CN111940482B (en) * | 2020-07-02 | 2023-10-10 | 上海市政工程设计研究总院（集团）有限公司 | Air-fuel ratio control method for in-situ gas thermal desorption remediation of polluted soil |
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