CN201496998U - Control system of mixed oil-gas burner - Google Patents
Control system of mixed oil-gas burner Download PDFInfo
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- CN201496998U CN201496998U CN2009201888471U CN200920188847U CN201496998U CN 201496998 U CN201496998 U CN 201496998U CN 2009201888471 U CN2009201888471 U CN 2009201888471U CN 200920188847 U CN200920188847 U CN 200920188847U CN 201496998 U CN201496998 U CN 201496998U
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- oil
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Abstract
The utility model relates to a control system of a mixed oil-gas burner. The control system comprises a PLC (Programmable Logic Controller), a gas flow transmitter, a PID (Proportion Integration Differentiation) load regulator, a fuel pump frequency converter, a combustion air servo regulator, a parameter signal transmitter, an actuator, a steam parameter transmitter and a gas pressure transmitter, wherein the input end of the PID load regulator is connected with the steam parameter transmitter; the output end of the PID load regulator is connected with a gas flow adjusting valve; and the input end of the gas flow adjusting valve is connected with the gas pressure transmitter. The control system automatically controls the start-up and shut-down of oil supplement and the oil supplement quantity according to the variation of the instant pressure of the fuel gas, changes the artificial control mode in the process of oil supplement, has better randomness and trackability and higher accuracy, achieves the normal operation of boilers when low-heat-value fuel gas, industrial waste gas, tail gas and gas source are insufficient, is provided with the effects of gaining heat and increasing the thermal radiation and the heat exchange, and can greatly improve the combustion efficiency and heat efficiency of the boilers.
Description
Technical field:
The utility model relates to a kind of oil-gas mixed burning burner control system.
Background technology:
Advance in the past few years, the basic power source policy that adapts to national energy-saving and emission-reduction, numerous domestic enterprises recruit persons for jobs worker's coal gas or industrial combustible exhaust gas, tail gas are as the main fuel of industrial thermal hardware, when combustion gas is not enough, replenishes fuel oil and fuel oil magnitude of recruitment and can implement automated randomized tracking adjusting with the variation of variation of thermal hardware calorific requirement and gas supply ability.For satisfying above-mentioned specification requirement, need design can carry out the burner of oil-gas mixed burning on the one hand, on the other hand must design can satisfy the control and the regulating system of above-mentioned requirements.The various structures of present burner control system are various, and the weak point of its existence is, can not realize that the automatic control that burner opens, stops and the automatic/hand of burning load regulate; Can not replenish opening, stopping controlling of fuel oil at random to burner according to the variation of gaseous-pressure with the adjusting of repairing amount; Can not realize the control and the adjusting of independent fuel oil, independent combustion gas and three kinds of running statuses of oil-gas mixed burning.
Summary of the invention:
Its purpose of the utility model just is to provide a kind of oil-gas mixed burning burner control system, can realize that the automatic/hand of automatic control that burner opens, stops and burning load is regulated; Can replenish opening, stopping controlling of fuel oil at random to burner according to the variation of gaseous-pressure with the adjusting of repairing amount; Can realize the control and the adjusting of independent fuel oil, independent combustion gas and three kinds of running statuses of oil-gas mixed burning.Have randomness, tracing property and accuracy preferably, the normal operation of boiler when this system can realize that fuel gas with low heat value, industrial waste gas, tail gas and source of the gas are not enough, have the gain of heat, increase the effect of heat radiation heat exchange, can greatly improve the efficiency of combustion and the thermal efficiency of boiler.
Realize above-mentioned purpose and the technical scheme taked, comprise PLC Programmable Logic Controller, gas flow transmitter, PID load controller, fuel pump frequency converter, combustion air servo-operated regulator, parameter signal transmitter and actuator, described control system comprises that also steam parameter transmitter, gaseous-pressure become
Send device, described PID load controller input connects the steam parameter transmitter, and described PID load controller output connects the gas flow control valve, and described gas flow control valve input connects the gaseous-pressure transmitter.
Compared with prior art the present invention has the following advantages.
Owing to adopted the master variable of steam pressure signal as native system, the steam flow signal is as parameter, regulate the structural design that the back is regulated gas flow control valve opening enforcement ratio by PID, thereby can implement automated randomized control to the start and stop and the repairing amount of replenishing fuel oil according to the variation of the instant pressure of combustion gas.Changed in the repairing process control mode by manual control, have randomness, tracing property and accuracy preferably, the normal operation of boiler when this system can realize that fuel gas with low heat value, industrial waste gas, tail gas and source of the gas are not enough, have the gain of heat, increase the effect of heat radiation heat exchange, can greatly improve the efficiency of combustion and the thermal efficiency of boiler.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing is the structural representation of this device control principle.
Concrete embodiment
Embodiment, comprise PLC Programmable Logic Controller, gas flow transmitter, PID load controller, fuel pump frequency converter, combustion air servo-operated regulator, parameter signal transmitter and actuator, as shown in the figure, described control system also comprises steam parameter transmitter, gaseous-pressure transmitter, described PID load controller input connects the steam parameter transmitter, described PID load controller output connects the gas flow control valve, and described gas flow control valve input connects the gaseous-pressure transmitter.
The combustion air of fuel oil and combustion gas respectively has a cover air door and a servo governor motion thereof, and the air quantity of fuel oil combustion air is regulated the fuel delivery signal enforcement ratio that is provided by the fuel pump frequency converter and regulated; The air demand signal enforcement ratio that the adjusting of combustion gas combustion air amount has the gas flow transmitter to provide is regulated.
The burner heating load is pressed the boiler calorific requirement and is implemented the continuous ratio adjusting, and combustion-supporting air quantity is pressed fuel oil, the combustion gas input quantity is implemented continuous ratio and regulated.
1, the architectural feature of oil-gas mixed burning control system
Native system is made up of boiler operatiopn load parameter signal transmitting device, PLC Programmable Logic Controller, combustion gas parameter transmitter and fuel combustion supporting air regulator etc.Its structure can produce the closed loop of oil-gas mixed burning burner and control automatically.
The oil-gas mixed burning burner control system mainly is made up of PLC Programmable Logic Controller, steam parameter transmitter, gaseous-pressure transmitter, gas flow transmitter, PID load controller, fuel pump frequency converter, combustion air servo-operated regulator, parameter signal transmitter and actuator.The opening of burner, stop, Load Regulation all has Boiler Steam parameter transmitter to implement control automatically, the multifuel combustion ratio of oil gas then has the gaseous-pressure transmitter to control automatically.
Steam pressure (P) signal is as the master variable of native system, steam flow (F) signal is as parameter, regulate the back by PID gas flow control valve opening enforcement ratio is regulated, and the gaseous-pressure transmitter is delivered to PLC and the combustion gas reference pressure P that need not repairing with the instant pressure signal P of combustion gas
0Compare and calculate the back and send the fuel oil multifuel combustion to adjuster and open, stop and the fuel-flow control signal, the instant pressure of boiler pressure and combustion gas when native system is implemented the basic variable of control to oil-gas mixed burning.
The combustion air of fuel oil and combustion gas respectively has a cover air door and a servo governor motion thereof, and the air quantity of fuel oil combustion air is regulated the fuel delivery signal enforcement ratio that is provided by the fuel pump frequency converter and regulated; The air demand signal enforcement ratio that the adjusting of combustion gas combustion air amount has the gas flow transmitter to provide is regulated.
The burner heating load is pressed the boiler calorific requirement and is implemented the continuous ratio adjusting, and combustion-supporting air quantity is pressed fuel oil, the combustion gas input quantity is implemented continuous ratio and regulated.
2, operation principle
After burner is started by boiler load PID conditioning signal, open gas valve earlier, light main gas flame and according to the aperture of boiler load Signal Regulation gas flow control valve.In adjustment process, if set the reference pressure P that does not need to replenish fuel oil among the PLC
0The only poor Δ P of instant pressure P (P with combustion gas
0-P)＞0 o'clock, then control system starts the repairing program; If Δ P≤0 o'clock, repairing then stops, combustion gas separately, and during repairing, the repairing amount increases with the increase of Δ P.When the instant pressure of combustion gas is reduced to P ' time, then combustion gas is closed, separately fuel oil.
At fuel band, when each fuel flow rate ratio changed, corresponding combustion-supporting air quantity is interlock variation in proportion also, can keep rational excess air coefficient.
3, function
A) automatic/hand that can realize automatic control that burner opens, stops and burning load is regulated.
B) can replenish opening, stopping controlling of fuel oil at random to burner according to the variation of gaseous-pressure with the adjusting of repairing amount.
C) can realize independent fuel oil, the separately control and the adjusting of combustion gas and three kinds of running statuses of oil-gas mixed burning.
D) oil-gas mixed burning control sequence is: fan starting (main gas valve leak detection) → preceding scavenging → set up ignition flame → main gas valve open → set up the low flame → normal combustion of combustion gas → load automatic/hand regulate (when combustion gas is sufficient, independent combustion gas; When combustion gas is not enough, mends and burn fuel oil, and regulate the repairing amount automatically; Gaseous-pressure is reduced to P ' when following, separately fuel oil) → fuel oil fray-out of flame → main oil gun purging → gas flame extinguishes → main gas gun purging → back scavenging → shutdown.
Claims (3)
1. oil-gas mixed burning burner control system, comprise PLC Programmable Logic Controller, gas flow transmitter, PID load controller, fuel pump frequency converter, combustion air servo-operated regulator, parameter signal transmitter and actuator, it is characterized in that, described control system also comprises steam parameter transmitter, gaseous-pressure transmitter, described PID load controller input connects the steam parameter transmitter, described PID load controller output connects the gas flow control valve, and described gas flow control valve input connects the gaseous-pressure transmitter.
2. a kind of oil-gas mixed burning burner control system according to claim 1, it is characterized in that, the combustion air of fuel oil and combustion gas respectively has a cover air door and a servo governor motion thereof, and the air quantity of fuel oil combustion air is regulated the fuel delivery signal enforcement ratio that is provided by the fuel pump frequency converter and regulated; The air demand signal enforcement ratio that the adjusting of combustion gas combustion air amount has the gas flow transmitter to provide is regulated.
3. a kind of oil-gas mixed burning burner control system according to claim 1 is characterized in that, the burner heating load is pressed the boiler calorific requirement and implemented the continuous ratio adjusting, and combustion-supporting air quantity is pressed fuel oil, the combustion gas input quantity is implemented continuous ratio and regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201888471U CN201496998U (en) | 2009-09-02 | 2009-09-02 | Control system of mixed oil-gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201888471U CN201496998U (en) | 2009-09-02 | 2009-09-02 | Control system of mixed oil-gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496998U true CN201496998U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201888471U Expired - Fee Related CN201496998U (en) | 2009-09-02 | 2009-09-02 | Control system of mixed oil-gas burner |
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| CN (1) | CN201496998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072489A (en) * | 2011-02-25 | 2011-05-25 | 凯明企业有限公司 | Combustor |
| CN104049622A (en) * | 2014-07-03 | 2014-09-17 | 浙江大唐国际绍兴江滨热电有限责任公司 | Startup boiler control system |
| CN109539302A (en) * | 2018-12-28 | 2019-03-29 | 广东省特种设备检测研究院佛山检测院 | Gas fired-boiler gas regulating device |
-
2009
- 2009-09-02 CN CN2009201888471U patent/CN201496998U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072489A (en) * | 2011-02-25 | 2011-05-25 | 凯明企业有限公司 | Combustor |
| CN104049622A (en) * | 2014-07-03 | 2014-09-17 | 浙江大唐国际绍兴江滨热电有限责任公司 | Startup boiler control system |
| CN104049622B (en) * | 2014-07-03 | 2017-01-11 | 浙江大唐国际绍兴江滨热电有限责任公司 | Startup boiler control system |
| CN109539302A (en) * | 2018-12-28 | 2019-03-29 | 广东省特种设备检测研究院佛山检测院 | Gas fired-boiler gas regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20130902 |