CN102080829A - Materials measuring and proportioning control method in mechanical stirring type fuel oil watering device - Google Patents
Materials measuring and proportioning control method in mechanical stirring type fuel oil watering device Download PDFInfo
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- CN102080829A CN102080829A CN 201110041699 CN201110041699A CN102080829A CN 102080829 A CN102080829 A CN 102080829A CN 201110041699 CN201110041699 CN 201110041699 CN 201110041699 A CN201110041699 A CN 201110041699A CN 102080829 A CN102080829 A CN 102080829A
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Abstract
The invention discloses a materials measuring and proportioning control method in a mechanical stirring type fuel oil watering device which comprises the main devices: a mechanical stirring core component emulsifier, a watering fuel oil tank, a fuel oil metering pump, a water metering pump, a back pressure valve, a security valve, and a sampling point. The accurate control of a plunger type water metering pump ensures the stability of the water content in the oil, three oil samples heat constant temperature extraction feeds back the water content and changes in time, and heat efficiency measurement of boiler combustion ensures the effects of energy saving and exhaust reduction and optimizes the water and oil proportioning. The quantitative proportioning of the fuel oil watering enables carbon and smoke contents to be decreased, the smoke exhausting temperature is lowered, the output heat is reduced, and the oil saving effect is obvious.
Description
Technical field
The present invention relates to a kind of fuel water power-saving technology, relate in particular to material metering and proportioning control method in the fuel water device.
Background technology
The water mixing fuel oil is not one of clean fuel that is most widely used at present, but still has many outstanding problems to be solved in actual applications, and is good enough as stability, oil-saving effect is not obvious, burning after stain substrate concentration is high.Tracing it to its cause mainly is that the physico-chemical property behind the fuel water is lacked enough understandings, because the viscosity of liquid fuel, surface tension, interfacial tension, and the stability after the water mixing and decentralization have a significant impact oil-water mixture state and effect.
From the angle of fuel-economizing, the fuel water amount is the bigger the better, but along with the increase of watering quantity can produce a series of negative effect: watering quantity increases, and viscosity increases, and causes heating-up temperature rising, energy consumption to increase; Stability reduces with the increase of watering quantity, thereby is prone to breakdown of emulsion, so watering quantity is too much unsuitable; The fuel gauge surface tension slightly descends after the water mixing, and interfacial tension declines to a great extent; With the increase of watering quantity, CO, N
OX and flue dust growing amount reduce gradually, and burning improves, but when increasing to a certain particular value, CO, NO
xIncrease the burning quality variation on the contrary with dust concentration.As seen, watering quantity control all has crucial meaning to the performance of fuel oil own, combustibility and emission performance.Take all factors into consideration CO, NO
xWith dust concentration and the several aspects of water mixing fuel oil performance influence factor, take into account energy-conservation and reduce discharging, think that watering quantity is advisable between 3-10%.Difficulty is big but the profit preparation is manually carried out in utilization, poor operability, therefore by the physico-chemical property before and after the fuel water is carried out reasonable assessment, design a kind of watering quantity control system of optimization, by required oil-water ratio that fuel oil and water is admixed together continuously, guarantee moisturely to realize that online adjusting is necessary stable the time.
Summary of the invention
For solving moisture stablizing in the water mixing fuel oil, the invention provides material metering and matching method in a kind of automatic control water mixing fuel oil, be applied in the mechanical agitation type fuel water device.
Mechanical agitation type fuel water apparatus main body is connected with the water route by three fast interfaces with oil circuit, be respectively water mixing fuel outlet, water inlet and fuel filler, in actual applications, as being oil burning boiler confession fuel oil, oil return can be transferred to oil return in the water mixing fuel oil fuel tank by the 4th fast interface.With on the water route that water inlet links to each other the water measuring pump is set, and on the oil circuit that fuel filler links to each other the fuel metering pump is set; Adopt fuel metering pump and water measuring pump that fuel oil and the water that injects emulsifier is accurately measured respectively, determine that water/fuel oil proportioning controls between 3-10% and reliably;
Fuel oil transmits through petroleum pipeline, injects the emulsifier fuel filler under the effect of fuel metering pump.Emulsifier is provided with three grades of stirring area, stir in emulsifier one-level district that the fuel filler place is provided with that a percent opening reaches 70%, each small aperture is less than 10 microns filter screen, fuel oil forms the fuel oil bundle of micron grain size through the filter screen effect, inject emulsifier one-level stirring area, oily Shu Sudu is controlled between the 0.5-1.0m/s.Water transmits through water-supply-pipe, injects mechanical agitation core component emulsifier water inlet under the effect of water measuring pump, enters emulsifier one-level stirring area.Cylindrical rotor to be clockwise rotating in the emulsifier one-level stirring area, because of gap between rotor and stator less than 5 microns, drive the current that enter and form thickness less than 5 microns water layer, and flow clockwise at its periphery, water velocity is about 50-100m/s.The water layer of the micron order thickness that flows and micron order fuel oil bundle normal impact fast fast under to impulse force, shearing force, frictional force and capillary effect, form the micron order globule in fuel oil.The water mixing fuel oil that begins to take shape under the drive of one-level stirring area rotor between one-level stirring area and secondary stirring area inlet enter the secondary stirring area, enter three grades of stirring area successively, form the water mixing fuel oil at last and discharge, after petroleum pipeline enters water mixing fuel oil fuel tank, store for future use from mechanical agitation core component emulsifier oil-out.Secondary stirs and three grades of stirrings are the gear stirring, its rotor surface is a gear, both are by gear interlock transmission, and interlock transmission part also plays stirring action because of the slit squeezing action, and secondary, three grades of stirrings are mainly played the globule and be dispersed in effect among the fuel oil.The rotation of mechanical agitation core component emulsifier relies on secondary and stirs the driven wheel is connected, it up stirring motor drive down and rotate counterclockwise, and drive secondary stirring rotation in the same way, and then drive three grades of stirrings and clockwise rotate.Simultaneously, driven wheel and one-level stir the mutual interlock of gear of top, drive it and clockwise rotate, and drive one-level and stir rotation in the same way.By above three grades of stirrings, form " oil-in-water " type water mixing fuel oil; In like manner, transposing fuel oil and water inlet, and appropriate change operational factor can obtain " Water-In-Oil " type water mixing fuel oil, and a machine is realized the production of two types of water mixing fuel oils.
The present invention is achieved through the following technical solutions: the capital equipment that material metering and proportioning control method comprise in the mechanical agitation type fuel water device is mechanical agitation core component emulsifier, water mixing fuel oil fuel tank, fuel metering pump, water measuring pump, counterbalance valve, safety valve, sampled point.Measure by fuel oil and the adjusting of discharge flow velocity, the water mixing oil inflame thermal efficiency, optimize water oil proportioning, and rely on and to contain water gaging and corresponding automatic control system reliably, realize metering proportion relevant parameter feedback information, make the water mixing fuel oil of moisture stable and tool effects of energy saving and emission reduction.
Fuel oil transmits through petroleum pipeline, the gear type fuel metering pump of safety valve is worn in employing, change and carry fuel oil by the be meshing with each other swept volume that produced in the process of two gears, the fuel metering pump is whenever goed around, the fuel oil discharge rate is the same, changes the fuel metering revolution speed and can regulate the fuel delivery amount, and rotating speed is fast more, conveying capacity is big more, fuel oil is injected mechanical agitation core component emulsifier fuel filler having under the press strip spare of＜5atm then.Pure water transmits through water-supply-pipe, adopts plunger type water measuring pump, drives water conveyor piston realization reciprocating motion by the mechanical linkages system and finishes suction-discharge process.Ram travel is fixed, and then the pure water discharge rate of phase is constant weekly, and the stroke and the cycle that change plunger can be regulated the water conveying capacity, water is injected mechanical agitation core component emulsifier water inlet having under the press strip spare of＜5atm equally.Simultaneously in plunger type water measuring pump exit counterbalance valve is set, with the output flow of stabilize water measuring pump, it also plays and subdues because the flow that siphon produces and the effect of pressure oscillation in addition.Determine the water/oily proportioning between the 3-10%, regulate fuel metering pump gear rotating speed and water measuring pump ram travel, quantitative oil-feed of cycle and water inlet.When the transporting velocity of fuel oil and water on request proportioning and after the conveying capacity in the unit interval adjusts, the metering proportion course of conveying just can continuously carry out.Fuel oil and water form the water mixing fuel oil and discharge from the water mixing fuel outlet under the effect of mechanical agitation core component emulsifier, store for future use after petroleum pipeline enters water mixing fuel oil fuel tank.As being oil burning boiler confession fuel oil, oil return can be transferred to oil return in the water mixing fuel oil fuel tank by the 4th fast interface.In mechanical agitation core component emulsifier water mixing fuel outlet, water mixing fuel oil fuel-tank outlet, boiler porch water mixing fuel oil sampled point is set respectively, adopt hot constant temperature extraction, the pure water volume of measuring after three place's oil sample standing separation is a water content, and by the accurate control of plunger pump stroke is guaranteed that Water in oil is stabilized in the setting range value, promptly by real-time monitoring to the oil sample water content, realization is guaranteed the moisture stable of fuel oil to the accurate metering of pure water.Measure according to the boiler combustion thermal efficiency, conclusive evidence water mixing fuel energy-saving emission reduction effect, and can further optimize water/oily proportioning, reach the effect of accurate control inflow by regulation and control to ram travel and cycle.
The invention has the beneficial effects as follows: the accurate control of plunger type water measuring pump guarantees that Water in oil is stable, the hot constant temperature extraction of three place's oil samples feedback Water in oil amount and variation in time, and the boiler combustion thermal efficiency is measured the conclusive evidence effects of energy saving and emission reduction and is optimized water oil proportioning.The quantitative proportioning of fuel water reduces soot content, and exhaust gas temperature reduces, and heat outputting reduces, and oil-saving effect is remarkable.
Description of drawings
The present invention will be further described below in conjunction with accompanying drawing and concrete embodiment.
Fig. 1 is a system pipeline schematic diagram in the inventive method.
Fig. 2 is the emulsifier structure principle chart.
Among the figure, 1, fuel filler, 2, water inlet, 3, the water mixing fuel outlet, 4, emulsifier, 5, sampled point A, 6, sampled point B, 7, sampled point C, 8, water mixing fuel oil fuel tank, 9, boiler.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Use this water mixing control scheme in injection boiler, adopt positive and negative balancing method test to combine and test, test the efficient that records based on the positive balance method; By changing the CO after different experimental condition (water mixing rate, excess air coefficient etc.) is measured burning
xAnd dust exhausting concentration, stir speed (S.S.) is 1200r/min, carries out the continuous stirring operation; Stove operating load fluctuation range is in ± 10% during test; Test is carried out when the stove thermal condition is stablized, and be no less than 8 hour from the cold conditions official testing of lighting a fire stabilization time, and combustion quality is consistent substantially during boiler operatiopn.Test determination the results are shown in following table.
Under test condition at that time, this injection boiler is smoke evacuation place CO when not having fuel water
2Content is 8.6%, and CO content is 26.6 * 10
-6, smoke evacuation place O
2Content is 9.6%, and the test thermal efficiency is 84.1%.At fuel water is 5.5% o'clock, obtains the same test condition down smoke-discharging CO of place
2Content is 8.1%, and CO content is 12.0 * 10
-6, smoke evacuation place O
2Content is 10.1%, and testing efficiency is 88.6%.Be increased at 7% o'clock with watering quantity, record smoke evacuation place CO
2Content is 8.5%, and CO content is 17.8 * 10
-6, smoke evacuation place O
2Content is 9.7%.Its fractional energy savings is 5.1%.This shows fuel water at 5.5% o'clock, oil-saving effect is better, and exhaust gas temperature reduces, and heat outputting reduces.
The present invention is not limited to the foregoing description, and protection scope of the present invention is all classified in any equivalent concepts or change in the technical scope that the present invention discloses as.
Claims (1)
1. material metering and proportioning control method in the mechanical agitation type fuel water device, it is characterized in that: related capital equipment comprises mechanical agitation core component emulsifier (4), water mixing fuel oil fuel tank (8), fuel metering pump, water measuring pump, counterbalance valve, safety valve, sampled point; Fuel oil transmits through petroleum pipeline, adopts the gear type fuel metering pump wear safety valve, fuel oil is injected mechanical agitation core component emulsifier fuel filler (1) having under the press strip spare of＜5atm; Pure water transmits through water-supply-pipe, adopts plunger type water measuring pump, water is injected mechanical agitation core component emulsifier water inlet (2), in plunger type water measuring pump exit counterbalance valve is set＜having under the press strip spare of 5atm equally; Determine the water/oily proportioning between the 3-10%, regulate fuel metering pump gear rotating speed and water measuring pump ram travel, quantitative oil-feed of cycle and water inlet; Fuel oil and water form the water mixing fuel oil and discharge from the water mixing fuel outlet under the effect of mechanical agitation core component emulsifier, store for future use after petroleum pipeline enters water mixing fuel oil fuel tank; For the oil return of oil burning boiler (9) for fuel oil is transferred to oil return in the water mixing fuel oil fuel tank by the 4th fast interface, in mechanical agitation core component emulsifier water mixing fuel outlet (3), water mixing fuel oil fuel-tank outlet, boiler porch water mixing fuel oil sampled point A (5), sampled point B (6), sampled point C (7) are set respectively, adopt hot constant temperature extraction, the pure water volume of measuring after three place's oil sample standing separation is a water content, and by the accurate control of plunger pump stroke is guaranteed that Water in oil is stabilized in the setting range value.
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| CN2011100416992A CN102080829B (en) | 2011-02-21 | 2011-02-21 | Materials measuring and proportioning control method in mechanical stirring type fuel oil watering device |
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| CN2011100416992A CN102080829B (en) | 2011-02-21 | 2011-02-21 | Materials measuring and proportioning control method in mechanical stirring type fuel oil watering device |
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| CN102080829A true CN102080829A (en) | 2011-06-01 |
| CN102080829B CN102080829B (en) | 2012-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699163A (en) * | 2016-03-17 | 2016-06-22 | 国网江苏省电力公司电力科学研究院 | Preparation device for insulating oil with specified water content |
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2011
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| CN86103889A (en) * | 1986-06-03 | 1987-12-16 | 湖南省能源研究所 | Fuel-water emulsified fechnique and emulsifying mixer thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699163A (en) * | 2016-03-17 | 2016-06-22 | 国网江苏省电力公司电力科学研究院 | Preparation device for insulating oil with specified water content |
| CN105699163B (en) * | 2016-03-17 | 2018-03-27 | 国网江苏省电力公司电力科学研究院 | A kind of device for formulating of specified water content insulating oil |
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| CN102080829B (en) | 2012-07-25 |
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