CN203501474U - Automatic temperature regulating control system of combustor type industrial boiler - Google Patents
Automatic temperature regulating control system of combustor type industrial boiler Download PDFInfo
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- CN203501474U CN203501474U CN201320556442.5U CN201320556442U CN203501474U CN 203501474 U CN203501474 U CN 203501474U CN 201320556442 U CN201320556442 U CN 201320556442U CN 203501474 U CN203501474 U CN 203501474U
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Abstract
The utility model relates to an automatic temperature regulating control system of a combustor type industrial boiler, and belongs to the field of a boiler. Optimal data of fuel supply quantity, combustion air quantity and furnace chamber negative pressure can be determined in real time through software analysis and expert database reasoning operation by adopting heat carrier temperature dynamic change trend parameters, furnace chamber temperature dynamic change trend parameters, furnace chamber negative pressure dynamic change trend parameters, furnace chamber flue gas composition content dynamic change trend parameters and heat carrier flow dynamic change trend parameters, the opening degree of a fuel regulating control valve, the opening degree of a combustion air regulating control valve and the rotating speed of an air inducing motor for supplying fuel can be controlled in real time, and thus the fuel supply quantity, the combustion air quantity and the furnace chamber negative pressure can be controlled in real time, and a working state of the industrial boiler can be always optimized in real time; the heat carrier flow can be controlled in real time according to temperature dynamic change trend parameters of a certain temperature control point in a heat utilization system, and further the temperature of the certain temperature control point can be controlled; meanwhile, the temperature of a heat carrier and the temperature of the certain temperature control point of the heat utilization system can be output in a certain time period by setting different time intervals and can be accurately controlled.
Description
Technical field
The utility model relates to field of boilers, specifically a kind of automatic temperature-control control system of combustor type industrial boiler.
Background technology
As everyone knows, Industrial Boiler is to provide the visual plant of producing required heat energy, and by fuel combustion heat hot carrier, the heat carrier of uniform temperature is transported to the hot system of using in pipeline, to meet industrial needs.Control real-time and accurately Industrial Boiler heat outputting bed temperature, control heat carrier temperature, the setting with certain temperature control point in hot system and accurately control different period Industrial Boiler heat outputting bed temperature, setting and different periods of accurate control by the heat carrier temperature of interior certain the temperature control point of hot system real-time and accurately, all the time the whole Industrial Boiler of real-time optimization and by the duty of hot system, to accurate production control, heat and Industrial Boiler for life, energy-conservation, the reduction of discharging by hot system, consumption reduction, environmental protection, be significant.
Common combustor type industrial boiler is usingd the liquid fuels such as heavy oil, natural gas, water-coal-slurry as main fuel, spirt hearth combustion after by burner nozzle, fuel being mixed with combustion air, the combustion air of burner hearth is provided by air blast, and the flue gas that the combustion chamber draft that air-introduced machine produces produces burning is discharged burner hearth through flue.The heat energy that fuel combustion produces makes heat carrier heating, and the heat carrier of uniform temperature is transported to by hot system to meet industrial needs.
For a long time, Industrial Boiler is mediumand smallscale industrial boilers especially, and major part is to rely on conventional instrument and operating means to control by veteran operating personnel.Industrial boiler system is multi-variable system, has a lot of controlled quentity controlled variables and controlled variable, and disturbance factor is too many, and control hysteresis is very strong, obviously has complicated coupled relation between many parameters, causes the Industrial Boiler running status in high energy consumption poor efficiency for a long time.Since the nearly more than ten years, programmable controller (PLC) technical development is very fast, DCS system has also obtained application in the control of fluidized bed type boiler, make part Industrial Boiler level of control have certain raising, but, for the so very strong multi-variable system of control hysteresis of Industrial Boiler, because its internal energy transformation mechanism is too complicated, not at control strategy, in control method, innovate, systematically do not design control program comprehensively, still the heat carrier heating-up temperature error of existence is large to be at present difficult to solve Industrial Boiler, Fuel Consumption is high, the thermal efficiency is low, the problem that pollutant discharge amount is large.Meanwhile, because heat carrier is at the thermal loss of conveyance conduit, with hot intrasystem heat exhaustion, causes the temperature of heat carrier certain temperature control point in by hot system to be difficult to accurate control, thereby affect product quality and production efficiency.And Industrial Boiler can not meet the hot temperature requirement of using with the different periods of hot system automatically, accurately and real-time.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model object is to provide a kind of automatic temperature-control control system of combustor type industrial boiler, solves the problem that heat carrier heating-up temperature error is large, Fuel Consumption is high, the thermal efficiency is low, pollutant discharge amount is large that Industrial Boiler still exists at present; Solve heat carrier and be difficult to by intrasystem certain the temperature control point temperature of heat the problem of accurately controlling; Solution must not meet the problem of hot temperature requirement for the hot system of use of different periods automatically, exactly.
The utility model solves the technical scheme that its technical problem adopts: a kind of automatic temperature-control control system of combustor type industrial boiler, this control system is comprised of arithmetic element, control module and performance element three parts, it is characterized in that: temperature transmitter, pressure transmitter, flow transmitter are housed on heat carrier intake pipeline and are connected with arithmetic element respectively; On heat carrier export pipeline, temperature transmitter, pressure transmitter, flow transmitter are connected with arithmetic element respectively; Heat carrier fluid level transmitter is connected with arithmetic element; Fire box temperature transmitter, burner hearth differential pressure transmitter, flame detector are housed on Industrial Boiler to be connected with arithmetic element respectively; At furnace outlet, online smoke components content analyzer being housed is connected with arithmetic element; The fuel flow rate transmitter, the fuel pressure transmitter that on fuel inlet pipe line, are equipped with are connected with arithmetic element respectively; The fuel adjusting control valve being equipped with on fuel inlet pipe line, fuel flameout protection electromagnetic valve, YE are connected with performance element respectively; The combustion-supporting air flow transmitter, the combustion air pressure transmitter that on combustion air intake pipeline, are equipped with are connected with arithmetic element respectively; The combustion air adjusting control valve being equipped with on combustion air intake pipeline is connected with performance element; With certain monitoring temperature point of hot system, temperature transmitter is housed or pressure transmitter is connected with arithmetic element; Be connected respectively to wind turbine, blower motor, heat carrier circulating pump motor with performance element with heat carrier make-up pump motor.
The utility model also can be achieved by the following measures: combustor type industrial boiler is boiler of organic heat carrier, steam boiler, hot-water boiler or hot air boiler.
The beneficial effects of the utility model are, can Industrial Boiler be carried out automatically controlling in real time Comprehensive ground, all the time the duty of real-time optimization Industrial Boiler, accurately control heat outputting bed temperature, can be according to heat outputting bed temperature dynamic change trend parameter, judge the dynamic rule of the relative target temperature of heat outputting bed temperature, control in real time the quantity delivered of fuel, reduce to the full extent waste of fuel; The smoke components dynamic change trend parameter detecting according to online smoke components content analyzer, the dynamic rule of judgement fuel combustion situation, control in real time the quantity delivered of combustion air, guarantee burner hearth full combustion of fuel, effectively improve the efficiency of combustion of fuel; The fire box temperature dynamic change parameter and the combustion chamber draft dynamic change parameter that according to fire box temperature transmitter, burner hearth differential pressure transmitter, detect, the dynamic rule of judgement fire box temperature and negative pressure, control in real time air inducing amount and combustion chamber draft, at normal discharge combustion product gases simultaneously, assurance fire box temperature is stable, reduces burner hearth thermal loss; Can be according to the temperature dynamic variation tendency parameter with certain temperature control point in hot system, judge the dynamic rule of the relative target temperature of this temperature control point heat carrier temperature, the dynamic need amount of computing fuel, controls in real time the flow with heat carrier in hot system, and then accurately controls this temperature control point temperature; Between can be at a time, in section, minute different periods be set the different heat carrier output temperature of coal-burning boilers and accurately control; Between can be at a time, in section, minute different periods be set coal-burning boilers and put different heat carrier temperature accurately control with hot system temperature control.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model, is also the schematic diagram of embodiment mono-, two.
Fig. 2 is the structural representation of the utility model embodiment tri-.
Fig. 3 is the utility model control system schematic diagram
In figure: 1. fuel adjusting control valve, 2. combustion air adjusting control valve, 3. blower motor, 4. chimney, 5. heat carrier fluid level transmitter, 6. burner YE, 7. online smoke components content analyzer, 8. heat carrier intake pipeline, 9. heat carrier input temp transmitter, 10. heat carrier input pressure transmitter, 11. heat carrier input flow rate transmitters, 12. fire box temperature transmitters, 13. burner hearth differential pressure transmitters, 14. Industrial Boilers, 15. heat carrier output temperature transmitters, 16. heat carrier output pressure transmitters, 17. heat carrier output flow transmitters, 18. heat carrier export pipelines, 19. steam bags, 20. fuel flow rate transmitters, 21. fuel pressure transmitters, 22. combustion-supporting air flow transmitters, 23. combustion air pressure transmitters, 24. fuel flameout protection electromagnetic valves, 25. burners, 26. fuel inlet pipe lines, 27. combustion air intake pipelines, 28. flame detectors, the hot system temperature control point of 29. use temperature transmitter, the hot system temperature control of 30. use point pressure transmitter, 31. heat carrier circulating pump motors, 32. heat carrier make-up pump motors, 33. control systems, 34. arithmetic elements, 35. control modules, 36. performance elements.
The specific embodiment
Embodiment 1:
Shown in Fig. 1, Fig. 3, heat carrier input temp transmitter 9, heat carrier input pressure transmitter 10, heat carrier input flow rate transmitter 11 are housed on the heat carrier intake pipeline 8 of the utility model Industrial Boiler and are connected with control system arithmetic element 34 respectively; Heat carrier output temperature transmitter 15, heat carrier output pressure transmitter 16, heat carrier output flow transmitter 17 are housed on heat carrier export pipeline 18 to be connected with control system arithmetic element 34 respectively; Fire box temperature transmitter 12, burner hearth differential pressure transmitter 13, flame detector 28 are housed on Industrial Boiler 14 to be connected with control system arithmetic element 34 respectively; At Industrial Boiler 14 furnace outlets, online smoke components content analyzer 7 being housed is connected with control system arithmetic element 34; The fuel flow rate transmitter 20 being equipped with on fuel inlet pipe line 26, fuel pressure transmitter 21 are connected with control system arithmetic element 34 respectively; The fuel adjusting control valve 1 being equipped with on fuel inlet pipe line 26, fuel flameout protection electromagnetic valve 24 are connected with control system performance element 36 respectively; The combustion-supporting air flow transmitter 22 being equipped with on combustion air intake pipeline 27, combustion air pressure transmitter 23 are connected with control system arithmetic element 34 respectively; The combustion air adjusting control valve 2 being equipped with on combustion air intake pipeline 27 is connected with control system performance element 36; With hot system temperature control point temperature transmitter 29, be connected with control system arithmetic element 34 respectively with hot system temperature control point pressure transmitter 30; Blower motor 3, heat carrier circulating pump motor 31, heat carrier make-up pump motor 32 are connected with control system performance element 36 respectively, and heat carrier make-up pump motor 32 supplements tank with heat carrier and is connected.
Control system 33 presets the target temperature of Industrial Boiler 14 heat outputting carriers.The baker process of Industrial Boiler 14 and blowing out temperature-fall period, need to adopt manually and control according to Industrial Boiler 14 operational procedures, heating-up time, temperature retention time, temperature fall time and the warming and cooling rate that also can according to control system 33, set according to Industrial Boiler 14 operational procedures adopt automatically to be controlled.When Industrial Boiler 14 heats up or when cooling reaches the target temperature power of the heat carrier output that control system 33 sets, control system 33 automatically locks this temperature, the temperature dynamic variation tendency parameter that control system arithmetic element 34 provides according to heat carrier output temperature transmitter 15, the dynamic rule of the relative target temperature of judgement heating tube heat outputting bed temperature, by analysis software and expert database reasoning computing fuel dynamics demand and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the aperture of fuel adjusting control valve 1 according to control signal, and then control in real time fuel feed.
Control system 33 presets the target temperature of different period heat outputting carriers in 14 certain time period of coal-burning boiler, presets the warming and cooling rate between different period heat outputting carrier target temperatures.When the heat carrier temperature of output reaches target temperature according to the warming and cooling rate rising of setting or decline, control system arithmetic element 34 automatically locks this temperature, the heat outputting bed temperature dynamic change trend parameter that control system arithmetic element 34 provides according to heat carrier output temperature transmitter 15, the dynamic rule of the relative target temperature of temperature of judgement heat outputting carrier, dynamic need amount by analysis software and expert database reasoning computing fuel dynamics demand fuel is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted fuel adjusting control valve 1 according to control signal, and then control in real time fuel feed.
Control system 33 can preset the target temperature with certain temperature control point heat carrier in hot system.The temperature of certain temperature control point rises or declines while reaching the target temperature of this temperature control point in by hot system, control system 33 automatically locks this temperature, control system arithmetic element 34 is according to the temperature dynamic variation tendency parameter providing with hot system temperature control point temperature transmitter 29, judge the relative target temperature of this temperature control point heat carrier temperature dynamic rule, by analysis software and expert database reasoning computing heat carrier dynamic flow and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the rotating speed of heat carrier circulating pump motor 31 according to control signal, and then control in real time heat carrier flow.
Control system 33 presets in certain time period the different periods with the target temperature of certain temperature control point in hot system, presets the difference periods with the warming and cooling rate between interior certain the temperature control point target temperature of hot system.The temperature of certain temperature control point rises or declines while reaching the target temperature of this temperature control point according to the warming and cooling rate of setting in by hot system, control system 33 automatically locks this temperature, control system arithmetic element 34 is according to the temperature dynamic variation tendency parameter providing with hot system temperature control point temperature transmitter 29, judge the dynamic rule of the relative target temperature of this temperature control point heat carrier temperature, by analysis software and expert database reasoning computing heat carrier dynamic flow and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the rotating speed of heat carrier circulating pump motor 31 according to control signal, and then control in real time heat carrier flow.
The dynamic rule of the smoke components content dynamic change trend parameter judgement fuel combustion situation that control system arithmetic element detects according to the online smoke components content analyzer 7 being equipped with at furnace outlet is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the aperture of combustion air adjusting control valve 2 according to control signal, and then controls in real time combustion air quantity delivered.
Control system arithmetic element 34 is according to the fire box temperature transmitter 12 being equipped with on Industrial Boiler 14, fire box temperature dynamic change trend parameter and the negative pressure dynamic change trend parameter that burner hearth differential pressure transmitter 13 provides, the dynamic rule of judgement fire box temperature and negative pressure is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element, control system performance element 36 is adjusted the rotating speed of blower motor 3 according to control signal, and then controls in real time combustion chamber draft.
The signal judgement fuel combustion state that control system arithmetic element 34 detects according to the flame detector 28 being equipped with on Industrial Boiler 14, control system performance element 36 is controlled fuel flameout protection electromagnetic valve 24 fuel shutoff supply when flame-out.
Heat carrier input temp transmitter 9, heat carrier input pressure transmitter 10, heat carrier input flow rate transmitter 11, fire box temperature transmitter 12, burner hearth differential pressure transmitter 13, online smoke components content analyzer 7, heat carrier output temperature transmitter 15, heat carrier output pressure transmitter 16, heat carrier output flow transmitter 17, heat carrier fluid level transmitter 5, fuel flow rate transmitter 20, fuel pressure transmitter 21, combustion-supporting air flow transmitter 22, combustion air pressure transmitter 23 is all set the bound of above-mentioned various parameters, set heat carrier circulating pump 31 operational factors simultaneously, the bound of heat carrier make-up pump 32 operational factors, transfinite and take sound and light alarm, Artificial Control or the control measure such as stop in emergency.
The control system 33 of Industrial Boiler 14 is comprised of control system arithmetic element 34, control system control module 35 and control system performance element 36.Industrial Boiler 14 control system arithmetic elements 34 are comprised of industrial computer, configuration software, application software, communication module, expert database, analysis software.Industrial Boiler 14 control system control modules 35 are comprised of nonshared control unit, touch-screen or PLC.Industrial Boiler 14 control system performance elements 36 can be frequency converter, YE.The heat carrier export pipeline 18 of Industrial Boiler 14 can be the export pipeline of conduction oil.The heat carrier export pipeline 18 of Industrial Boiler 14 can be also hot blast export pipeline.Industrial Boiler 14 can be that organic heat is carried stove or steam boiler, hot-water boiler, hot-blast stove.
The dynamic change trend parameter of the utility model temperature, pressure, negative pressure or component content is the rate of change of temperature, pressure, negative pressure or the component content of this system point, or is the rate of change of temperature, pressure, negative pressure or component content numerical difference between 2 of this systems.
Embodiment 2:
As shown in Figure 1, Figure 3, heat carrier input temp transmitter 9, heat carrier input pressure transmitter 10, heat carrier input flow rate transmitter 11 being housed on the heat carrier intake pipeline 8 of the utility model Industrial Boiler is connected with control system arithmetic element 34 respectively; Heat carrier output temperature transmitter 15, heat carrier output pressure transmitter 16, heat carrier output flow transmitter 17 are housed on heat carrier export pipeline 18 to be connected with control system arithmetic element 34 respectively; Fire box temperature transmitter 12, burner hearth differential pressure transmitter 13, flame detector 28 are housed on Industrial Boiler 14 to be connected with control system arithmetic element 34 respectively; At Industrial Boiler 14 furnace outlets, online smoke components content analyzer 7 being housed is connected with control system arithmetic element 34; The fuel flow rate transmitter 20 being equipped with on fuel inlet pipe line 26, fuel pressure transmitter 21 are connected with control system arithmetic element 34 respectively; The fuel adjusting control valve 1 being equipped with on fuel inlet pipe line 26, fuel flameout protection electromagnetic valve 24 are connected with control system performance element 36 respectively; The combustion-supporting air flow transmitter 22 being equipped with on combustion air intake pipeline 27, combustion air pressure transmitter 23 are connected with control system arithmetic element 34 respectively; The combustion air adjusting control valve 2 being equipped with on combustion air intake pipeline 27 is connected with control system performance element 36; With hot system temperature control point temperature transmitter 29, be connected with control system arithmetic element 34 respectively with hot system temperature control point pressure transmitter 30; Blower motor 3, heat carrier circulating pump motor 31, heat carrier make-up pump motor 32 are connected with control system performance element 36 respectively.
Control system 33 presets the goal pressure of Industrial Boiler 14 heat outputting carriers.The baker process of Industrial Boiler 14 and blowing out temperature-fall period, need to adopt manually and control according to Industrial Boiler 14 operational procedures, pressure rising time, dwell time, step-down time and the buck speed that also can according to control system 33, set according to Industrial Boiler 14 operational procedures adopt automatically to be controlled.When Industrial Boiler 14 boosts or when step-down reaches the heat outputting carrier goal pressure that control system 33 sets, control system 33 automatically locks this pressure, the pressure dynamic change trend parameter that control system arithmetic element 34 provides according to heat carrier output pressure transmitter 16, the dynamic rule of the relative goal pressure of judgement heating tube heat outputting carrier pressure, by analysis software and expert database reasoning computing fuel dynamics demand and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the aperture of fuel adjusting control valve 1 according to control signal, and then control in real time fuel feed.
Control system 33 presets the goal pressure of different period heat outputting carriers in 14 certain time period of Industrial Boiler, presets the buck speed between different period heat outputting carrier goal pressure.When the heat carrier pressure of output reaches goal pressure according to the buck speed rising of setting or decline, control system 33 automatically locks this pressure, the heat outputting carrier pressure dynamic change trend parameter that control system arithmetic element 34 provides according to heat carrier output pressure transmitter 16, the dynamic rule of the relative goal pressure of pressure of judgement heat outputting carrier, dynamic need amount by analysis software and expert database reasoning computing fuel is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted fuel adjusting control valve 1 according to control signal, and then control in real time fuel feed.
Control system 33 can preset the goal pressure with certain temperature control point heat carrier in hot system.In by hot system when the pressure rise of certain temperature control point or goal pressure that decline reaches this temperature control point, control system 33 automatically locks this pressure, control system arithmetic element 34 is according to the pressure dynamic change trend parameter providing with hot system temperature control point pressure transmitter 30, judge the relative goal pressure of this temperature control point heat carrier pressure dynamic rule, by analysis software and expert database reasoning computing heat carrier dynamic flow and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the rotating speed of heat carrier circulating pump motor 31 according to control signal, and then control in real time heat carrier flow.
Control system 33 presets in certain time period the different periods by the goal pressure of certain temperature control point in hot system, presets the difference periods by the buck speed between interior certain the temperature control point target pressure of hot system.During the pressure of certain temperature control point reaches this temperature control point according to the buck speed rising of setting or decline in by hot system goal pressure, control system 33 automatically locks this pressure, control system arithmetic element 34 is according to the pressure dynamic change trend parameter providing with hot system temperature control point pressure transmitter 30, judge the dynamic rule of the relative goal pressure of this temperature control point heat carrier pressure, by analysis software and expert database reasoning computing heat carrier dynamic flow and send corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the rotating speed of heat carrier circulating pump motor 31 according to control signal, and then control in real time heat carrier flow.
The dynamic rule of the smoke components content dynamic change trend parameter judgement fuel combustion situation that control system arithmetic element 34 detects according to the online smoke components content analyzer 7 being equipped with at furnace outlet is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the aperture of combustion air adjusting control valve 2 according to control signal, and then controls in real time combustion air quantity delivered.
Control system arithmetic element is according to the furnace pressure transmitter 12 being equipped with on Industrial Boiler 14, furnace pressure dynamic change trend parameter and the negative pressure dynamic change trend parameter that burner hearth differential pressure transmitter 13 provides, the dynamic rule of judgement furnace pressure and negative pressure is also sent corresponding control instruction, control system control module 35 is according to the instruction output control signal of control system arithmetic element 34, control system performance element 36 is adjusted the rotating speed of blower motor 3 according to control signal, and then controls in real time combustion chamber draft.
The signal judgement fuel combustion state that control system arithmetic element 34 detects according to the flame detector 28 being equipped with on Industrial Boiler 14, control system performance element 36 is controlled fuel flameout protection electromagnetic valve 24 fuel shutoff supply when flame-out.
Heat carrier input pressure transmitter 9, heat carrier input pressure transmitter 10, heat carrier input flow rate transmitter 11, furnace pressure transmitter 12, burner hearth differential pressure transmitter 13, online smoke components content analyzer 7, heat carrier output pressure transmitter 15, heat carrier output pressure transmitter 16, heat carrier output flow transmitter 17, heat carrier fluid level transmitter 5, fuel flow rate transmitter 20, fuel pressure transmitter 21, combustion-supporting air flow transmitter 22, combustion air pressure transmitter 23 is all set the bound of above-mentioned various parameters, set heat carrier circulating pump 31 operational factors simultaneously, the bound of heat carrier make-up pump 32 operational factors, transfinite and take sound and light alarm, Artificial Control or the control measure such as stop in emergency.
The control system 33 of Industrial Boiler 14 is comprised of control system arithmetic element 34, control system control module 35 and control system performance element 36.Industrial Boiler 14 control system arithmetic elements 34 are comprised of industrial computer, configuration software, application software, communication module, expert database, analysis software.Industrial Boiler 14 control system control modules 35 are comprised of nonshared control unit, touch-screen or PLC.Industrial Boiler 14 control system performance elements 36 can be frequency converter, YE.The heat carrier export pipeline 18 of Industrial Boiler 14 can be the export pipeline of conduction oil.The heat carrier export pipeline 18 of Industrial Boiler 14 can be also hot blast export pipeline.Industrial Boiler 14 can be that organic heat is carried stove or steam boiler, hot-water boiler, hot-blast stove.
The dynamic change trend parameter of the utility model temperature, pressure, negative pressure, flow or component content is the rate of change of temperature, pressure, negative pressure, flow or the component content of this system point, or is the rate of change of temperature, pressure, negative pressure, flow or component content numerical difference between 2 of this systems.
Embodiment 3:
As shown in Figure 2 and Figure 3, the utility model heat carrier output temperature transmitter 15, heat carrier output pressure transmitter 16, heat carrier output flow transmitter 17 are arranged on the heat carrier export pipeline 18 being connected with steam bag 19, heat carrier export pipeline 18 is steam or the hot water delivery pipe's lines that are communicated with steam bag 19, and other structure is identical with embodiment 1.
Operation principle of the present utility model is: the heat carrier of Industrial Boiler constantly circulates at heating position with between by hot system through piping, to meet the industrial heat demand of using.With the heat that hot system needs, be constantly to change, but by the heat carrier temperature of hot system, require relatively stable for input.The baker process of Industrial Boiler and blowing out temperature-fall period, need to adopt manually and control according to Industrial Boiler operational procedure, heating-up time, temperature retention time, temperature fall time and the warming and cooling rate that also can according to control system, set according to Industrial Boiler operational procedure adopt automatically to be controlled.When Industrial Boiler heats up or when cooling reaches the heat carrier export target temperature that control system sets, control system automatically locks this temperature, according to Industrial Boiler heat outputting bed temperature power dynamic change trend parameter, the dynamic rule of the relative target temperature of judgement heat outputting bed temperature, by the dynamic need amount of analysis software and expert database reasoning computing fuel, by the aperture of real-time adjustment fuel adjusting control valve, and then adjust in real time the quantity delivered of fuel, reach the object that accurate stable is controlled heat carrier temperature.When Industrial Boiler heat outputting bed temperature starts to reduce, just strengthen the quantity delivered of fuel; When heat carrier temperature starts to raise, just reduce the quantity delivered of fuel; All the time the quantity delivered that guarantees fuel changes with heat carrier variations in temperature.
The smoke components content dynamic change trend parameter detecting according to online smoke components content analyzer, mainly the content of carbon monoxide and oxygen, the dynamic rule of judgement fuel combustion situation, calculate the dynamic need amount of combustion air, by controlling combustion air control valve opening, adjust in real time combustion air quantity delivered, guarantee burner hearth full combustion of fuel.Fuel duty increases, and combustion air supply also increases; Fuel duty diminishes, and combustion air supply also diminishes; All the time guarantee that burner hearth fuel-efficient fully burns.
Fuel combustion can produce a large amount of heat and flue gas in burner hearth, suitable negative pressure can make flue gas get rid of burner hearth and burner hearth thermal loss little, too small negative pressure makes burner hearth thermal loss little but unfavorable to discharging flue gas, and excessive negative pressure is conducive to discharge flue gas but burner hearth thermal loss is large.According to fire box temperature dynamic change trend parameter and combustion chamber draft dynamic change trend parameter, the dynamic rule of judgement fire box temperature and combustion chamber draft, calculate the reasonable numerical value of negative pressure, by controlling the rotating speed of blower motor, adjust in real time combustion chamber draft, make combustion chamber draft not only be conducive to discharge flue gas but also make burner hearth thermal loss little.
The various parameters that industry boiler control system gathers by field instrument judge the complex working condition of Industrial Boiler comprehensively, through software analysis and expert database reasoning computing, determine in real time fuel feed, the optimal data of combustion-supporting air quantity and combustion chamber draft, control in real time feed fuels as heavy oil, natural gas, coal dust, the aperture of the adjusting control valve of the fuel such as water-coal-slurry, combustion air control valve opening, blower motor rotating speed, and then control in real time fuel feed, combustion-supporting air quantity, combustion chamber draft, Industrial Boiler is carried out to automatically controlling in real time of Comprehensive.
Control system presets the heat carrier target temperature with certain temperature control point in hot system.The temperature of certain temperature control point rises or declines while reaching the target temperature of this temperature control point in by hot system, control system automatically locks the temperature of this temperature control point, control system can be according to the temperature dynamic variation tendency parameter of this temperature control point, judge the relative target temperature dynamic rule of this temperature control point heat carrier temperature, by the dynamic flow of analysis software and expert database reasoning computing heat carrier, control in real time the aperture of fuel adjusting control valve and then control in real time the flow with heat carrier in hot system.When dynamic temperature parameter increase is put in this temperature control, with the flow of heat carrier in hot system, reduce; When this temperature control is put dynamic temperature parameter and reduced, with the flow of heat carrier in hot system, increase.Because Industrial Boiler is accurately exported the heat carrier of design temperature, and then accurately control this temperature control point temperature.
Control system presets the target temperature of different heat outputting carrier of interior different periods of certain time period, preset different different heating and cooling time and warming and cooling rates of period, reach the requirement that the different periods export different heat carrier temperature, and keep accurately carrying out in real time temperature control.
The dynamic change trend parameter of the utility model temperature, pressure, negative pressure, flow or component content is the rate of change of temperature, pressure, negative pressure, flow or the component content of this system point, or is the rate of change of temperature, pressure, negative pressure, flow or component content numerical difference between 2 of this systems.
Control system presets the different periods in certain time period and puts different heat carrier target temperatures with hot system temperature control, different heating and cooling time and warming and cooling rate, reach different these temperature controls of period and put different temperature requirements, and keep accurately carrying out in real time temperature control.
(1) control system judges the complex working condition of coal-burning boiler according to the various dynamic parameters that gather comprehensively, through software analysis and expert database reasoning computing, draw optimum control data, Comprehensive ground carries out automatically controlling in real time to coal-burning boiler, all the time the duty of real-time optimization Industrial Boiler, can accurately control the temperature of heat outputting carrier.
(2), according to heat outputting bed temperature dynamic change trend parameter, the relative target temperature dynamic rule of judgement heat carrier temperature is controlled the quantity delivered of fuel in real time, accomplishes " making the best use of everything ", reduces to the full extent waste of fuel.
(3) according to the smoke components content dynamic change trend parameter of online smoke components content analyzer detection, control in real time the quantity delivered of combustion air, guarantee burner hearth full combustion of fuel, effectively improve the efficiency of combustion of fuel.
(4) the fire box temperature dynamic change trend parameter and the combustion chamber draft dynamic change trend parameter that according to fire box temperature transmitter, burner hearth differential pressure transmitter, detect, control in real time air inducing amount and combustion chamber draft, at normal discharge combustion product gases simultaneously, guarantee that fire box temperature is stable, reduces burner hearth thermal loss.
(5) according to the temperature dynamic variation tendency parameter with certain temperature control point in hot system, control in real time heat carrier circulating pump rotating speed and then control in real time the flow with heat carrier in hot system, because Industrial Boiler is accurately exported the heat carrier of design temperature, so can accurately control this temperature control point temperature.
(6) between can be at a time, in section, different periods be set the different target temperature of Industrial Boiler heat outputting carrier, set different heating and cooling time and warming and cooling rate, control system can be adjusted the running status of each subsystem of Industrial Boiler automatically, reaches the requirement of the output different temperatures of different periods.
(7) between can be at a time different periods of section set for hot system temperature control point different target temperature, set different heating and cooling time and warming and cooling rate, control system can be adjusted the running status of heat carrier circulating pump automatically, reaches this point temperature requirement of different periods.
Claims (2)
1. the automatic temperature-control control system of a combustor type industrial boiler, this control system is comprised of arithmetic element, control module and performance element three parts, it is characterized in that: temperature transmitter, pressure transmitter, flow transmitter are housed on heat carrier intake pipeline and are connected with arithmetic element respectively; On heat carrier export pipeline, temperature transmitter, pressure transmitter, flow transmitter are connected with arithmetic element respectively; Heat carrier fluid level transmitter is connected with arithmetic element; Fire box temperature transmitter, burner hearth differential pressure transmitter, flame detector are housed on Industrial Boiler to be connected with arithmetic element respectively; At furnace outlet, online smoke components content analyzer being housed is connected with arithmetic element; The fuel flow rate transmitter, the fuel pressure transmitter that on fuel inlet pipe line, are equipped with are connected with arithmetic element respectively; The fuel adjusting control valve being equipped with on fuel inlet pipe line, fuel flameout protection electromagnetic valve, YE are connected with performance element respectively; The combustion-supporting air flow transmitter, the combustion air pressure transmitter that on combustion air intake pipeline, are equipped with are connected with arithmetic element respectively; The combustion air adjusting control valve being equipped with on combustion air intake pipeline is connected with performance element; With certain monitoring temperature point of hot system, temperature transmitter is housed or pressure transmitter is connected with arithmetic element; Be connected respectively to wind turbine, blower motor, heat carrier circulating pump motor with performance element with heat carrier make-up pump motor.
2. the automatic control system of combustor type industrial boiler according to claim 1, is characterized in that said combustor type industrial boiler is boiler of organic heat carrier, or steam boiler, or hot-water boiler, or hot air boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556442.5U CN203501474U (en) | 2013-09-09 | 2013-09-09 | Automatic temperature regulating control system of combustor type industrial boiler |
Applications Claiming Priority (1)
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| CN113654024A (en) * | 2021-08-24 | 2021-11-16 | 北京天衡智联科技有限公司 | Steam boiler pipeline pressure coordinated control system |
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| CN113654024A (en) * | 2021-08-24 | 2021-11-16 | 北京天衡智联科技有限公司 | Steam boiler pipeline pressure coordinated control system |
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