CN105333618A - Energy-saving control system and device for coal-fired heat conduction oil boiler - Google Patents
Energy-saving control system and device for coal-fired heat conduction oil boiler Download PDFInfo
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- CN105333618A CN105333618A CN201410367785.6A CN201410367785A CN105333618A CN 105333618 A CN105333618 A CN 105333618A CN 201410367785 A CN201410367785 A CN 201410367785A CN 105333618 A CN105333618 A CN 105333618A
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Abstract
The invention relates to an energy-saving control system and device for a coal-fired heat conduction oil boiler and belongs to the field of coal-fired heat conduction oil boilers. According to the system and device, oil supply temperature, oil return temperature, combustion chamber negative pressure and the oxygen content of discharged smoke of the heat conduction oil boiler are acquired and transmitted to a computer sensor signal analysis module; the signal analysis module outputs an analog signal through logic calculation; the speed of a boiler air blower and the speed of a fire grate motor are controlled according to the oil supply temperature; the proportion of the air blower and the proportion of the fire grate motor are corrected according to the oxygen content of the discharged smoke; and the speed of an oil pump is controlled according to the temperature difference of the oil supply temperature and the oil return temperature. By means of the system and device, power consumption and coal consumption are greatly reduced, cost and operation friendliness are reduced, the coal-fired heat conduction oil boiler can be really accepted by customers, and the segmented combustion problem of the heat conduction oil boiler, the problem that negative pressure control of a combustion chamber of the boiler is not stable, the problem that a heat conduction circulating pump cannot run economically, the problem that heat condition oil temperature fluctuates and the problem that air and coal ratio configuration is not reasonable are solved.
Description
Technical field
The present invention relates to a kind of coal burning heat-conducting oil boiler, be specifically related to coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, belong to coal burning heat-conducting oil field of boilers.
Background technology
Coal burning heat-conducting oil boiler is with coal, heavy oil, light oil or flammable liquid for fuel, and conduction oil is heat carrier.Utilize oil circulating pump to force liquid phase circulation, after heat energy is flowed to heating equipment, then return the single flow special industrial stove reheated.Coal-fired thermal oil furnace is applied to petroleum chemical industry more, textile printing and dyeing industry, plastics and the industry of picture glue, paper industry, oils industry, synthetic fiber industry, the wood-based plate of timber industry, fiberboard is hot-forming, drying is decatize all the year, the mineral wool board processing of building material industry, plasterboard is dried, asphalt heating, candy is processed, candied date is processed, and vermicelli are dried, food service industry, biscuit is dried, oil expression and beverage are dried, the supply of less than the 350 degrees Celsius thermals source such as baking vanish, food processing, timber processing, asphalt heating, carton production, dewatering vegetable, baking vanish, the oven dry of casting sand mo(u)ld etc.The feature of coal burning heat-conducting oil boiler: under lower operating pressure, higher work temperature can be obtained; The heating can entering stable and accurate temperature; Under the load of each grade, the thermal efficiency all can remain on optimum level; Liquid phase conveying heat energy, 300 DEG C time, heat carrier is little compared with water saturation steam pressure 70 times; There is complete operation control and safety monitoring assembly; Economize on electricity, fuel-economizing, water saving, saving expend, and within 3 ~ 6 months, recoup the investment.
The control overwhelming majority of current heat conducting oil boiler adopts discontinuous combustion system to control, and namely conduction oil reaches certain temperature boiler stopping burning, restarts boiler when temperature reduces certain value.Also have few a part of boiler take distribute control mode control combustion, this control mode automaticity is high, and temperature precise control is energy-conservation, shortcoming be invest very high, to operator's technical merit require also very high.
Summary of the invention
For the problems referred to above, the invention provides coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, its intelligence degree is high, easy to operate, and operating cost is low.
The technical scheme that the present invention takes is:
Coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, its structure comprises: the outlet of oil inlet pipe, fuel feed pump, oil pump, oil supply motor, oil supply motor frequency converter, air blast, blower motor, blower motor frequency converter, cinder, coal entrance, fire grate, fire grate frequency converter, body of heater, air-introduced machine, air-introduced machine motor frequency converter, oil guide pipe, cable, oxygen concentration sensor, pressure transducer, oil inlet pipe oil temperature sensor, fuel feed pump oil temperature sensor, computer, oil inlet pipe and fuel feed pump are connected with oil guide pipe two ends respectively, described oil guide pipe is helicoidal structure, body of heater entirety is cylindrical structural, sidewall of the furnace body designs for double-side sandwich, oil guide pipe spiral is installed in sidewall of the furnace body interlayer, described pressure transducer is connected with computer by cable, oil inlet pipe inwall utilizes screw connecting mode to be provided with oil inlet pipe oil temperature sensor, described oil inlet pipe oil temperature sensor is connected with computer by cable, fuel feed pump inwall utilizes screw connecting mode to be provided with fuel feed pump oil temperature sensor, described fuel feed pump oil temperature sensor is connected with computer by cable, in the middle part of fuel feed pump, oil pump is installed, described oil pump connects oil supply motor, described oil supply motor contains oil supply motor frequency converter, described oil supply motor frequency converter is connected with computer by cable, bottom of furnace body is communicated with air blast, described air blast connects blower motor, blower motor contains blower motor frequency converter, described blower motor frequency converter is connected with computer by cable, fire grate realizes fixing by the installing plate that body of heater side is arranged, fire grate contains fire grate frequency converter, described fire grate frequency converter is connected with computer by cable, air-introduced machine is vertically arranged on body of heater top center, air-introduced machine top annular edge utilize screw connecting mode to be provided with oxygen concentration sensor, described oxygen concentration sensor is connected with computer by cable, air-introduced machine contains air-introduced machine motor frequency converter, described air-introduced machine motor frequency converter is connected with computer by cable, computer contains sensor signal analysis module.
Described furnace body wall radial direction is provided with the through hole holding steel pipe, described steel pipe inner face is positioned at body of heater inner chamber, steel pipe outer face is provided with flange arrangement, steel pipe is fixed on sidewall of the furnace body by the flange arrangement of screw and end, steel tube inner hole installs pressure transducer near outer fix, and described pressure transducer and steel pipe inner wall are adhered fixed by glue.
Described oil guide pipe external diameter is less than the width between sidewall of the furnace body double-side sandwich, and the helix tube internal orifice dimension formed after oil guide pipe spiral is greater than the external diameter of sidewall of the furnace body inner layer wall.
Described blower outlet is connected with bottom of furnace body air inlet by welding.
Described body of heater side vertical height is provided with cinder outlet and coal entrance, and described cinder outlet and coal entrance are horizontally set, and the mouth wall straight-flow furnace body side surface of coal entrance is to body of heater inner chamber.
Bottom described air-introduced machine, air intake vent is connected with the air outlet of body of heater top center by welding.
Beneficial effect acquired by the present invention:
Owing to present invention employs technique scheme, compared with present sectional combustion control mode, greatly reduce power consumption and coal consumption, compared with Distributed Control System, greatly reduce the friendly of cost and operation, really can be readily accepted by customers.Solve heat conducting oil boiler sectional combustion problem; Boiler furnace vacuum cavitations instability problem; Heat conduction oil circulating pump can not economic operation problem; Conduction oil temperature fluctuation problem; Coal-air ratio unreasonable allocation problem.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Accompanying drawing explanation
Fig. 1 is three-dimensional structure diagram of the present invention.
Fig. 2 is partial sectional view of the present invention.
Fig. 3 is rearview of the present invention.
Fig. 4 is ES of the present invention.
In figure: 1-oil inlet pipe, 2-fuel feed pump, 3-oil pump, 4-oil supply motor, 41-oil supply motor frequency converter, 5-air blast, 6-blower motor, 61-blower motor frequency converter, 7-cinder exports, 8-coal entrance, 9-fire grate, 91-fire grate frequency converter, 10-body of heater, 11-air-introduced machine, 111-air-introduced machine motor frequency converter, 12-oil guide pipe, 13-cable, 14-oxygen concentration sensor, 15-pressure transducer, 16-oil inlet pipe oil temperature sensor, 17-fuel feed pump oil temperature sensor, 18-computer.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, is used for explaining the present invention in this illustrative examples of inventing and explanation, but not as a limitation of the invention.
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, its structure comprises: oil inlet pipe 1, fuel feed pump 2, oil pump 3, oil supply motor 4, oil supply motor frequency converter 41, air blast 5, blower motor 6, blower motor frequency converter 61, cinder outlet 7, coal entrance 8, fire grate 9, fire grate frequency converter 91, body of heater 10, air-introduced machine 11, air-introduced machine motor frequency converter 111, oil guide pipe 12, cable 13, oxygen concentration sensor 14, pressure transducer 15, oil inlet pipe oil temperature sensor 16, fuel feed pump oil temperature sensor 17, computer 18, oil inlet pipe 1 and fuel feed pump 2 are connected with oil guide pipe 12 two ends respectively, described oil guide pipe 12 is helicoidal structure, body of heater 10 entirety is cylindrical structural, body of heater 10 sidewall designs for double-side sandwich, oil guide pipe 12 spiral is installed in body of heater 10 sidewall interlayer, described pressure transducer 15 is connected with computer 18 by cable 13, oil inlet pipe 1 inwall utilizes screw connecting mode to be provided with oil inlet pipe oil temperature sensor 16, described oil inlet pipe oil temperature sensor 16 is connected with computer 18 by cable 13, fuel feed pump 2 inwall utilizes screw connecting mode to be provided with fuel feed pump oil temperature sensor 17, described fuel feed pump oil temperature sensor 17 is connected with computer 18 by cable 13, oil pump 3 is installed in the middle part of fuel feed pump 2, described oil pump 3 connects oil supply motor 4, described oil supply motor 4 is containing oil supply motor frequency converter 41, described oil supply motor frequency converter 41 is connected with computer 18 by cable 13, air blast 5 is communicated with bottom body of heater 10, described air blast 5 connects blower motor 6, blower motor 6 is containing blower motor frequency converter 61, described blower motor frequency converter 61 is connected with computer 18 by cable 13, fire grate 9 realizes fixing by the installing plate that body of heater 10 side is arranged, fire grate 9 is containing fire grate frequency converter 91, described fire grate frequency converter 91 is connected with computer 18 by cable 13, air-introduced machine 11 is vertically arranged on body of heater 10 top center, air-introduced machine 11 top annular edge utilize screw connecting mode to be provided with oxygen concentration sensor 14, described oxygen concentration sensor 14 is connected with computer 18 by cable 13, air-introduced machine 11 is containing air-introduced machine motor frequency converter 111, described air-introduced machine motor frequency converter 111 is connected with computer 18 by cable 13, computer 18 is containing sensor signal analysis module, described body of heater 10 wall radial direction is provided with the through hole holding steel pipe, described steel pipe inner face is positioned at body of heater 10 inner chamber, steel pipe outer face is provided with flange arrangement, steel pipe is fixed on body of heater 10 sidewall by the flange arrangement of screw and end, steel tube inner hole installs pressure transducer 15 near outer fix, and described pressure transducer 15 is adhered fixed by glue with steel pipe inner wall, described oil guide pipe 12 external diameter is less than the width between body of heater 10 sidewall double-side sandwich, and the helix tube internal orifice dimension formed after oil guide pipe 12 spiral is greater than the external diameter of body of heater 10 side wall inner layer wall, described air blast 5 air outlet is connected with body of heater 10 bottom air inlet mouth by welding, described body of heater 10 side vertical height is provided with cinder outlet 7 and coal entrance 8, and described cinder outlet 7 and coal entrance 8 are horizontally set, and mouth wall through body of heater 10 side of coal entrance 8 is to body of heater 10 inner chamber, bottom described air-introduced machine 11, air intake vent is connected with the air outlet of body of heater 10 top center by welding.
Embodiment 2:
Coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, by gathering the oil temperature supplying of heat conducting oil boiler, returning-oil temperature, combustion chamber draft, oxygen content in exhaust smoke is to computer 18 sensor signal analysis module, through logical calculated, signal analyse block outputting analog signal, boiler blower 5 is controlled according to oil temperature supplying, the speed of fire grate 9, air blast 5 and fire grate 9 slow-down during temperature height, air blast 5 and fire grate 9 pick up speed when temperature is low, according to the ratio of oxygen content in exhaust smoke correction air blast 5 and fire grate 9.According to the speed of hearth vacuum control air-introduced machine 11, to reach permanent negative-pressure firing, according to the speed of the temperature difference control oil pump 3 of oil temperature supplying and returning-oil temperature, when the temperature difference is large, explanation heat is large, thus accelerates the speed of oil pump, otherwise when having a narrow range of temperature.Present invention employs technique scheme, compared with present sectional combustion control mode, greatly reduce power consumption and coal consumption, compared with Distributed Control System, greatly reduce the friendly of cost and operation, really can be readily accepted by customers.Solve heat conducting oil boiler sectional combustion problem; Boiler furnace vacuum cavitations instability problem; Heat conduction oil circulating pump can not economic operation problem; Conduction oil temperature fluctuation problem; Coal-air ratio unreasonable allocation problem.
Native system is up-to-date adds auxiliary coal powder injection burning, auxiliary coal powder injection is added exactly on the basis of original system, principle is the hole of opening two diameter 133mm in the both sides of original boiler, put into steel coal injection device, by outside coal powder injection machine, common burning coal powder is broken into tiny fine coal to eject through steel pipe, then is blown into boiler auxiliary combustion through blower fan pressurization.This system advantage greatly reduces coal-fired consumption, on average economizes on coal more than 10%.Because the quantity spraying into fine coal is original coal consumption 10% to 20%, so the dust of boiler increases seldom.Due to the burning above primary combustion or original chain, so very little to the improvement project amount of boiler, just can transform when not stopping production.This system and original autocombustion system with the use of, not only achieve the improvement greatly of technique, and be that boiler energy consumption reduces greatly.The principle of economizing on coal, the efficiency of coal dust spray combustion must mode chain furnace combustion mode high by about 20%; Due to the intervention of coal powder injection, it is thick to reduce chain furnace coal seam, and make mode chain furnace combustion more abundant, cinder reduces greatly containing coal amount.
Claims (6)
1. coal burning heat-conducting oil Energy-saving Control System of Boiler and equipment, structure comprises: oil inlet pipe (1), fuel feed pump (2), oil pump (3), oil supply motor (4), oil supply motor frequency converter (41), air blast (5), blower motor (6), blower motor frequency converter (61), cinder outlet (7), coal entrance (8), fire grate (9), fire grate frequency converter (91), body of heater (10), air-introduced machine (11), air-introduced machine motor frequency converter (111), oil guide pipe (12), cable (13), oxygen concentration sensor (14), pressure transducer (15), oil inlet pipe oil temperature sensor (16), fuel feed pump oil temperature sensor (17), computer (18), it is characterized in that: oil inlet pipe (1) is connected with oil guide pipe (12) two ends respectively with fuel feed pump (2), described oil guide pipe (12) is helicoidal structure, body of heater (10) entirety is cylindrical structural, body of heater (10) sidewall designs for double-side sandwich, oil guide pipe (12) spiral is installed in body of heater (10) sidewall interlayer, described pressure transducer (15) is connected with computer (18) by cable (13), oil inlet pipe (1) inwall utilizes screw connecting mode to be provided with oil inlet pipe oil temperature sensor (16), described oil inlet pipe oil temperature sensor (16) is connected with computer (18) by cable (13), fuel feed pump (2) inwall utilizes screw connecting mode to be provided with fuel feed pump oil temperature sensor (17), described fuel feed pump oil temperature sensor (17) is connected with computer (18) by cable (13), fuel feed pump (2) middle part is provided with oil pump (3), described oil pump (3) connects oil supply motor (4), described oil supply motor (4) is containing oil supply motor frequency converter (41), described oil supply motor frequency converter (41) is connected with computer (18) by cable (13), body of heater (10) bottom is communicated with air blast (5), described air blast (5) connects blower motor (6), blower motor (6) is containing blower motor frequency converter (61), described blower motor frequency converter (61) is connected with computer (18) by cable (13), fire grate (9) realizes fixing by the installing plate that body of heater (10) side is arranged, fire grate (9) is containing fire grate frequency converter (91), described fire grate frequency converter (91) is connected with computer (18) by cable (13), air-introduced machine (11) is vertically arranged on body of heater (10) top center, air-introduced machine (11) top annular edge utilize screw connecting mode to be provided with oxygen concentration sensor (14), described oxygen concentration sensor (14) is connected with computer (18) by cable (13), air-introduced machine (11) is containing air-introduced machine motor frequency converter (111), described air-introduced machine motor frequency converter (111) is connected with computer (18) by cable (13), computer (18) is containing sensor signal analysis module.
2. coal burning heat-conducting oil Energy-saving Control System of Boiler as claimed in claim 1 and equipment, it is characterized in that: body of heater (10) wall radial direction is provided with the through hole holding steel pipe, described steel pipe inner face is positioned at body of heater (10) inner chamber, steel pipe outer face is provided with flange arrangement, steel pipe is fixed on body of heater (10) sidewall by the flange arrangement of screw and end, steel tube inner hole installs pressure transducer (15) near outer fix, and described pressure transducer (15) and steel pipe inner wall are adhered fixed by glue.
3. coal burning heat-conducting oil Energy-saving Control System of Boiler as claimed in claim 1 and equipment, it is characterized in that: oil guide pipe (12) external diameter is less than the width between body of heater (10) sidewall double-side sandwich, the helix tube internal orifice dimension formed after oil guide pipe (12) spiral is greater than the external diameter of body of heater (10) side wall inner layer wall.
4. coal burning heat-conducting oil Energy-saving Control System of Boiler as claimed in claim 1 and equipment, is characterized in that: air blast (5) air outlet is connected with body of heater (10) bottom air inlet mouth by welding.
5. coal burning heat-conducting oil Energy-saving Control System of Boiler as claimed in claim 1 and equipment, it is characterized in that: body of heater (10) side vertical height is provided with cinder outlet (7) and coal entrance (8), described cinder outlet (7) and coal entrance (8) are horizontally set, and the through body of heater of mouth wall (10) side of coal entrance (8) is to body of heater (10) inner chamber.
6. coal burning heat-conducting oil Energy-saving Control System of Boiler as claimed in claim 1 and equipment, is characterized in that: air-introduced machine (11) bottom air intake vent is connected with the air outlet of body of heater (10) top center by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367785.6A CN105333618A (en) | 2014-07-30 | 2014-07-30 | Energy-saving control system and device for coal-fired heat conduction oil boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367785.6A CN105333618A (en) | 2014-07-30 | 2014-07-30 | Energy-saving control system and device for coal-fired heat conduction oil boiler |
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| CN105333618A true CN105333618A (en) | 2016-02-17 |
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| CN201410367785.6A Pending CN105333618A (en) | 2014-07-30 | 2014-07-30 | Energy-saving control system and device for coal-fired heat conduction oil boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397323A (en) * | 2021-12-14 | 2022-04-26 | 中煤科工集团沈阳研究院有限公司 | Device and method for measuring shortest natural ignition period of coal |
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| KR100711814B1 (en) * | 2005-10-21 | 2007-04-30 | 주식회사 경동네트웍 | Igniting and combustion system of oil boiler |
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| CN114397323A (en) * | 2021-12-14 | 2022-04-26 | 中煤科工集团沈阳研究院有限公司 | Device and method for measuring shortest natural ignition period of coal |
| CN114397323B (en) * | 2021-12-14 | 2023-09-12 | 中煤科工集团沈阳研究院有限公司 | Device and method for measuring shortest natural ignition period of coal |
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