CN102869923B - For controlling method and the device of the normal-pressure boiler with airtight combustion chamber - Google Patents
For controlling method and the device of the normal-pressure boiler with airtight combustion chamber Download PDFInfo
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- CN102869923B CN102869923B CN201080065708.5A CN201080065708A CN102869923B CN 102869923 B CN102869923 B CN 102869923B CN 201080065708 A CN201080065708 A CN 201080065708A CN 102869923 B CN102869923 B CN 102869923B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000567 combustion gas Substances 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 3
- 239000002737 fuel gas Substances 0.000 claims abstract 2
- 238000012360 testing method Methods 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000006870 function Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000007420 reactivation Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 6
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- 230000008569 process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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- 230000003213 activating effect Effects 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
- F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/19—Measuring temperature outlet temperature water heat-exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/26—Measuring humidity
- F23N2225/30—Measuring humidity measuring lambda
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
Abstract
The control method of boiler, boiler is provided with atmospheric burner, it comprises for controlling to the valve of the combustion gas delivering to burner (14), for detecting the control device (13) of the device (10) of flame and the functional part as gas valve (15) of boiler existed in burner (14), the fan being provided with its oneself electro-motor, circulator or pump, temperature probe, control device (13) coordinates with memory (12), tabulates according to multiple optimum operation conditions of the feature relevant with flame, thermal power and value λ to boiler.One of this curve judges the operating point of boiler, the ratio of combustion air and combustion gas is revised from current operation value, with along this operating point of this curve movement, whether this change of inspection ratio reaches predetermined value, when reaching predetermined value, the air fuel gas ratio of the proper operation before resetting, in the opposite case, amendment gas flow rate is to obtain best combustion ratio.The also claimed device for realizing the method.
Description
Technical field
The object of the invention is the method for the boiler for controlling to be provided with atmospheric burner of the preamble according to exclusive rights.Another object of the present invention is the device for realizing said method.
Background technology
Known, the burner of common the above-mentioned type comprises for controlling to the valve of the combustion gas delivering to burner, for detecting the control device of the device of the flame in burner, the functional part of burner, such as, this functional part is as being present in actuator in burner, the fan (being usually used in airtight combustion chamber boiler) by its oneself electrical motor driven, circulator, three-way diverter valve, temp probe etc.
Usually there is " low side " boiler in market, can predict, by the parts of mechanical type, as being placed on the pressure switch of combustion air entrance side or toxic emission side, guarantee that necessity of combustion air provides (and the best therefore and clean burn).Except high cost, it also relates to the restriction of the possibility of the burning outside normal parameter etc., as when major gas pressure (even if do not provide in rule still can produce pollute and may to the burning of human hazard) excessive variation or major gas quality change, or when there is the failure and special of tapping equipment or manufacture or design or other tolerances.
In addition, the intervention of the calibration for valve itself also carried out due to attendant or carelessness, the pressure leaving the combustion gas of feeding valve may experience change; Therefore, as mentioned above, the operating parameter determined in the design phase of boiler is between the operating period of boiler and As time goes on may not as guaranteed correct burning (pollution-free).
Finally, in order to prevent boiler operation and occur the danger that damages heat-exchanging part or even damage boiler itself or damage surrounding environment subsequently when lack of water, check in heating system and/or main hydraulic circuit whether also there is water by mechanical part (contact separately), this mechanical part that cost is increased may break down in this case and therefore lose their appointed " safety " function.
Also known, in the boiler of the above-mentioned type, flare up fire level (more properly, detect by kilo-ohm in units of its impedance or and the proportional curtage value of flare up fire) and quantity combusted between there is correlation, that is, CO, CO
2with the level of similar combustion gas, above-mentioned correlation is by many curve limits corresponding with various ability to work, according to these abilities to work, the relation between flame and burning quality can be limited, and can identify with the combustion air/combustion gas needed for the proper operation for boiler than corresponding value scope (namely, in such parameter area combustion, not pollute).
DE10220772 relates to a kind of for regulating the method for combustion process, and particularly, for burner, wherein, sensor to be placed in combustion zone and to produce the measuring-signal representing burning.Carry out signal transacting and adjustment to measuring-signal, wherein, fuel-air ratio is adjusted to setting value, this setting value limits based on adjustable air capacity.The conditioning signal with limit value is judged according to measuring-signal.
DE10220773 relates to a kind of for regulating the method for combustion process, in particular for burner, wherein, measures component, especially ionization transducer, to be placed in combustion zone and to send and the relevant signal that burns.Signal transacting is carried out to this signal, to set fuel-air ratio.Above-mentioned signal transacting comprises the spectral frequency analysis for generation of conditioning signal.It is also claimed for regulating the device of burner combustion process.
Summary of the invention
The object of this invention is to provide a kind of method and apparatus of the boiler for controlling the above-mentioned type, making it at free of contamination burning horizontal operation.
Particularly, the spatter property that the mechanical part and guaranteeing that the object of the invention is the ventilation unit saved for controlling boiler even burns under above-mentioned abnormal condition of work.
Another object of the present invention can obtain the adaptivity of the length of tapping equipment and the control of type and/or increase efficiency, considers combustion cleaning degree when not having other sensor auxiliary simultaneously.
Another object of the present invention is, in order to make the control optimization of above-mentioned boiler, saves for the hydraulic pressure of control system and the existence of control water and the mechanical part circulating to guarantee safety operation in a dynamic fashion thereof.
Clearly these and other object is realized by the method and apparatus according to combined claim for those skilled in the art.
Accompanying drawing explanation
In order to understand the present invention better, give the following drawings, these accompanying drawings only exemplarily non-limitingly to provide, wherein:
Fig. 1 shows the exemplary graph of the possible working curve of the boiler corresponding with various ability to work, and these curves are functions of burning (being limited by λ (Lambda) value) and flame impedance;
Fig. 2 shows the flow chart according to method of the present invention;
Fig. 3 A, 3B and 3C show curve map, this curve is shown in the time after motor deexcitation, the time dependent function of detection voltage on the motor of the fan of boiler, wherein, airtight combustion chamber is respectively from the condition before rotary speed that is high, low and sky;
Fig. 4 shows the block diagram according to device of the present invention.
Detailed description of the invention
With reference to described accompanying drawing, about Fig. 1,2 and 4, the control to the ventilation unit of boiler and burning is therefore described.Know for a long time, in the boiler, usually by means of the electrode be immersed in flame and for encouraging it and measuring the electronic circuit of the restriction of flame level, control the signal from flame itself, checking " quality " of burning, thus it is checked whether to carry out in the limit of regulation when not producing pollutant.
By the flare up fire of monitoring as feedback, correct combustion process can be controlled.But flare up fire itself can not easily for this object, because it is subject to the impact using tolerance, burner, combustion power; In addition, even if for identical application model (such as, identical boiler), that is, with reference to Fig. 1, the change of parameter (herein, also due to manufacturing tolerance, Setup Type etc.) still make the simple setting of absolute operant level be not enough to be thought of as, such as " not burning ", when right value is calculated as A by absolute value, flame detection level equals value B '.Its evidence is following situation: the flame as combustion feedback does not correctly use in boiler or atmospheric burner.For this reason, arrange correct combustion testing in advance, this test is carried out under will there is particular job condition with predetermined timing or boiler.This test is based on flame combustion correlation, in any case it is obtained by parts 10, the burner 14 of boiler (comprise common electricity and/or electronic component, and be preferably microprocessor, thus limit programmable control system by memory) operation be stored in the suitable memory 12 of the device 13 for controlling, and valve 15 is intervened, with to burner 14 feeding combustible gas.
Known, this correlation limits as lower curve: for the given operating point of boiler, and the value of burning signal is linked to the change of the λ (burning quality index) (lambda) of the example according to Fig. 1 by this curve.
When being defined in the usual working curve of the embody rule (or boiler) that its Design and implementation stage is determined, between the operating period of boiler, within predetermined time interval or when particular job condition (as described below) being detected, to advance along correlation curve by making operating point itself and occurring the tram of above-mentioned operating point.With reference to above-mentioned particular job condition, the change relevant with flare up fire detected when stable workload, it can be regarded as the reason for activating test, and this change case is if (with reference to Fig. 1) is from starting point A to different some B '.This change itself is represent but be not must be enough to be used in judging the change of burning condition, and does not affect entity.Another exceptional condition activating combustion testing may be needed to be that the level of Oscillation Amplitude flare up fire (usually presenting) being detected is far above normally.
Mobile working point on given curve is carried out to the amount of the combustion air delivering to burner by reducing; This is such as realized by deexcitation fan or reduction fan speed (such as, by working to the common control system for induction motor 230VAC, e.g., by phase offset, acting on the motor of fan).
All these constant flow rate that will simultaneously keep combustion gas to leave valve 15 and be drawn towards burner 14.
Alternately, being drawn towards the amount (such as, by increasing the outlet pressure of combustion gas) of the combustion gas of burner 14 by amendment, similar result can be obtained, constant by what work keep air to supply to suitable control valve 15.
By this way, the curve that is placed thereon along with operating point of operating point and moving in (left side in curve map).Result can be (also with reference to Fig. 2):
A) start work point be correct (such as, around A) (namely, consequently have on the correct working curve of the boiler under the control of best combustion with air like this and gas flow rate), and, in this case, predetermined value that flare up fire will decline (considering that its resistance value is expressed), until the minimum point of its inter_curve (X) and then rise.If impedance contrast rf
a-rf
cURRENT(wherein, rf
cURRENTat time t at test period
cURRENTthe impedance of the instantaneous flame that place measures, rf
athe average flame value detected before combustion testing starts) reach at least one predetermined value (this value can be reached before the X that touches the bottom), then think that test is positive, restart fan, and application continues its normal operating.
If b) operating point to be moved to by the ratio that changes combustion air and combustion gas the region (B or B ') of inefficient combustion from (A), then flare up fire will be reduced to and be less than predetermined value.This causes the negative test of combustion testing.This result causes the corrective action of the reduction aspect of the discharge gas flow rate of valve, and object makes application be back to work at correct burning point (C), and wherein, the execution of combustion testing subsequently will have positive result.
Preferably (unrestricted condition), limit combustion gas and leave the maximum magnitude of pressure correctness, after this discharge, the another combustion testing with negative test produces safety shutdown due to inefficient combustion.According to this method, (unrestricted condition) starting trouble can be attempted, and, if this condition is repeated " n " secondary trial, then closing module (this state can be recovered by manually to reset) subsequently.
If judged the inapplicable condition of inefficient combustion, then according to identical method and after the combustion testing with positive result, leaving pressure can be back to median gradually more or less or even be back to initial value.
Therefore, one of advantage of system is: (usually may be in an installation to the obstruction of air duct in appearance, ice as on ventilation duct) when being greater than in conventional systems, simply by with reduce amount work, then its can work when clean burning (thus guaranteeing the comfortableness of user).
The test realized is configured to: according to logic given in following Fig. 2 provided by-do not tested by type.
In the figure, it relates to the test realized by reducing air supply, 20 limit the beginning according to the process of said method, the initial measurement of 21 expression flame values, 22 are suitable for by deexcitation fan or reduce the effect that its speed (or alternately, the change of flow velocity or combustion gas are to change of the pressure of burner) revises combustion air and the ratio of combustion gas.In block 23, measure instantaneous flame value, then, inspection impedance contrast is greater than or is less than setting value (block 24).If answer is affirmative, then again increase fan speed, or reactivate fan, if suitable, then increase the flow velocity (block 25) of combustion gas to burner, if or it is corresponding to the usually predetermined maximum limiting maximum capacity, then and keep it constant.If answer is negative, then, in block 26, again estimate impedance contrast, and, if this estimation has negative test, then in block 27, reduce gas flow rate.
In block 28, that estimates gas flow rate reduction reaches value, if it is less than the predetermined maximum of reduction, then stops this process at block 30, or closes burner (block 29).
As another advantage, due to aforesaid operations pattern, be different from the presently used solution needing the add ons used except basic " machinery " configuration, add ons is dissimilar for what make in combustion adaptive environment, the gas exhaust device of length, or for recovering the efficiency of (increase) application no matter when environment allows, according to the present invention (test for correctly burning), fan speed can adapt to length and the cross section of tapping equipment, or, reduce fan speed in the conceived case thus the efficiency of combustion of increase boiler.Its control together with fan speed (as follows by realizing of describing, such as, the phase offset by for 230VAC fan) makes it possible to enough points judging correct burning approx.
This function is current in the system used to meet in the following manner:
-manual type, by adding dividing plate (restriction air passes through the passage of the tapping equipment constantly shortened), or
-automated manner, by inserting air-flow or pressure sensor in the boiler, and based on the signal adaptation fan speed relevant with detected air-flow.
According to the present invention, process is as follows:
-from the operating rate (lower than maximum) reduced, carry out above-mentioned test
-test result is used for the operating rate confirming or change fan; Particularly:
If-test detects correct burning and in preset range, then confirms that current fan speed is for given ability to work (in this case, system is with correct air velocity work);
If-test detects inefficient combustion (CO
2lower than predetermined value), then reduce maximum operating speed, and use maximum operating speed as the benchmark tested for subsequent combustion; Further, subsequently,
If-test detects incorrect burning, then can proceed according to one of following possibility:
If-work at present speed lower than maximum, then increases operating rate; Or
If work at present speed has been maximum operating speed, then carry out according to above-mentioned some process (analysis about Fig. 1) b) subsequently, lower gas flow rate, if suitable, then after " n " secondary adjustment is attempted, close boiler, object is to obtain correct burning, does not reach the desired value of correct burning.
This option can use together with above-mentioned one, or may not need the operation that must be used to control boiler.
In order to from initially just detecting exceptional condition, by the measurement of electric current or " exchange " function of motor itself, above-mentioned combustion testing can be made with ventilating part and be therefore associated with the above-mentioned testing circuit of the actual activation of fan (even if not being necessary).For this reason, circuit can be predicted and be suitable for detecting the AC signal and control algolithm that are produced by motor upon closing, precognition:
The activation of-fan
-it closes (after the scheduled time), and
-in the alternating voltage of decelerating phase generation or the measurement of electric current.
The algorithm of research and development makes it possible to obtain the information relevant with following situation: whether fan works (rotation), and whether it is connected to network, and the qualitative instruction of rotary speed.
With reference to Fig. 3 A, B and C, they illustrate the behavior of the detection of the motor of normally used fan on gas fired-boiler.Period at the trial, the power-off (after the order time previously having started 0.5-10s) of fan.The process of the voltage on the fan that described accompanying drawing shows the effect by changing its motor after fan closedown and produces.The amount of the voltage produced, size and frequency (by control device 13 detect and depend on the type and model of fan) represent rotating condition before fan itself.
If detect and do not rotate (Fig. 3 C), then perform safety measure (such as, if application be standby mode---burner close, if application started or with reduce ability start or cannot start, then safety shutdown or restart).
In order to obtain the control completely to boiler, and reduce its cost simultaneously, in the equipment that use is in a heat exchanger accommodating and pressure (hydraulic) water that is that heated by burner operates, precognition following methods.
-predict following circuit test:
-burner 14 is activated and operates scheduled time Tn with reservation capability Qn.Ability and time limit in the design phase and depend on material and the water content thereof of weight, heat exchanger itself.The size of time and ability must be defined as making at least to cause any damage to heat exchanger when lacking water and/or circulation.
In addition, their size must be defined as the predetermined rising of the temperature making it possible to produce the water being contained in internal heat exchanger, judges the actual appearance of water and active cycle after a while for (as described below).
During this period, calculate the calorie (being obtained by the integration of burner capacity) stored in the burner, and monitor outlet temperature.
(judge in the definition phase of the parameter relevant with discussed function if increased at mutual conductance, and depend on the type etc. of heat exchanger, temperature probe) and be more than or equal to certain value Dtl, be expressed as a ° K/s, when do not detect that temperature rises, then close burner 14 lack water because estimate in heat exchanger, therefore, temperature is sent to probe at once, to form the heat transfer of the metal of heat exchanger, and can not weaken because its inside exists water.
In the con-trary case, average outlet temperature is stored.Then, circulator or pump (not shown) is activated.If circulator work, and there is water in heat exchanger, then should detect the transient temperature judged according to the heat stored in a heat exchanger and rise, this temperature rises and depends on weight, its material and water content thereof.If the result of test is positive (Dt is in design phase limited range), then the operation of boiler to the burner opened (normal operating) can proceed.In the opposite case, close burner, and if suitably, then perform one or more experimental stage.
The regime type test obtained provides the information existed about water/active cycle, and makes it possible to save normally used absolute pressure switch or circular flow gauge in boiler.
Describe the specific embodiment of the present invention.But other embodiment is also feasible and is in the scope of the claim of combination.
Claims (17)
1. one kind is suitable for the control method of the combustion testing performing boiler, described boiler has airtight combustion chamber and is provided with atmospheric burner, described atmospheric burner comprises for controlling to the valve of the combustion gas delivering to described burner (14), for detecting the flame detecting device (10) of the flame of existence in described burner (14) and the signal for generation of expression fuel condition, and the control device of the functional part of described boiler (13), described functional part comprises gas valve (15), be provided with the fan of its oneself electro-motor, circulator or pump, temperature probe, described control device (13) receives the signal from described flame detecting device (10) and coordinates with memory (12), wherein, multiple conditions of work of described boiler tabulated for described flame, the curvilinear function of the feature that thermal technology's rate of doing work of described boiler is relevant with burning quality index, it is characterized in that, in order to perform described combustion testing, in the operating condition, and when the particular job condition in predetermined time section or in described boiler occurs, in the discrete time period between the operating period of described boiler,
One of such curve judges the operating point of described boiler;
The ratio between combustion air and combustion gas is revised from current or practical operation value, with along the such operating point of such curve movement, and its comparatively low spot (X) towards described curve is mobile;
Estimate impedance contrast rf
a-rf
cURRENT,
Wherein, rf
cURRENTat time t at described test period
cURRENTthe impedance of the instantaneous flame that place records, and
Rf
ait is the average flame value detected before described combustion testing starts;
Such change of described ratio is checked whether to have the result making described impedance contrast reach predetermined value;
When reaching predetermined value, described test is considered to positive and is considered to correct, namely in the limit of regulation in the burning at above-mentioned operating point place, operation air fuel gas ratio is before reset, its normal operating can be continued when described test starts to make described boiler;
In the opposite case, amendment gas flow rate, with the operating point making described boiler turn back to correct burning, in described correct burning, the combustion testing subsequently of execution will have positive result.
2. method according to claim 1, it is characterized in that, in predetermined time section or when particular job condition being detected, perform described combustion testing, described in detect that particular job condition comprises the level of the amplitude of the vibration change of flare up fire compared with a reference value being detected or described flare up fire detected far above normal level.
3. method according to claim 1, it is characterized in that, revise ratio between described combustion air and combustion gas by reducing the amount being fed to the combustion air of described burner (14), fan is intervened in such being reduced by and rotary speed obtains.
4. method according to claim 1, is characterized in that, performs the amendment to the ratio between described combustion air and combustion gas while the gas-flow remaining to described burner is constant.
5. method according to claim 1, is characterized in that, when air velocity is constant, carries out the described amendment to the ratio between described combustion air and combustion gas by the amendment amount be drawn towards to the combustion gas of described burner (14).
6. method according to claim 1, is characterized in that, described predetermined value is minimum one in described working curve.
7. method according to claim 1, it is characterized in that, if the ratio between described combustion air and combustion gas does not reach the correct burning of predetermined value after the change of pre-determined number, then according to described impedance contrast and with the comparing of predetermined value, estimate the need of the ratio between the described combustion air of amendment and combustion gas, and the need of the estimation proceeded such difference, until achieve correct burning or until described boiler attendance is prevented from or closes.
8. method according to claim 1, it is characterized in that, from wherein gas quantity has reduced to obtain correct condition of burning, if it is inapplicable to have caused above-mentioned wherein gas quantity to reduce to obtain the reason of the condition of correct burning, then increase gas flow rate until it reaches the correct burning of predetermined value, or if possible return initial value.
9. method according to claim 1, it is characterized in that, if the change of the judgement of described operating point and the ratio between described combustion air and combustion gas demonstrates the inefficient combustion of boiler, be then decreased to the gas flow rate of described burner (14), to reset correct burning.
10. method according to claim 9, it is characterized in that, if the reduction of described gas flow rate does not reset the value of correct burning, then predict new try when described boiler startup and safety shutdown or the block when manually resetting request and close.
11. methods according to claim 1, it is characterized in that, the control of precognition to described fan, describedly control the inspection in the described operating point to described boiler and obtain during the amendment subsequently of the ratio between described combustion air and combustion gas, respectively according to the judgement of correct burning or according to CO
2discharge the judgement of burning lower than the non-optimal of predetermined value maintain or reduce the rotary speed of described fan, to obtain the recovery of adaptation to tapping equipment or efficiency.
12. methods according to claim 11, is characterized in that, detecting in the situation that non-optimal is burnt, are revised the rotary speed of described fan by the rotary speed increasing described fan.
13. methods according to claim 11, it is characterized in that, if the rotary speed of described fan is the highest, then be reduced to the described gas flow rate of described burner, described reduction is performed by continuous several times, further, if there is no the fuel value of expectation after the change of maximum number of times, then described boiler is closed.
14. methods according to claim 1, is characterized in that, by after the deexcitation of the power supply of described fan, measure the alternating current that produced by the electro-motor of described fan to estimate the correct function of described fan.
15. 1 kinds for controlling the method for boiler, described boiler has airtight combustion chamber, described airtight combustion chamber is provided with atmospheric burner, described atmospheric burner comprises for controlling to the control device (13) of the valve of combustion gas and the functional unit of described boiler of delivering to burner (14), described functional unit comprises heat exchanger, pump for water, the pressure (hydraulic) water heated flows into described heat exchanger from described burner (14), it is characterized in that providing:
-activate described burner (14) and predetermined hold-time with reservation capability,
-calculate the calorie stored in described heat exchanger within such scheduled time when described pump stops,
-after the reactivation of described pump, monitor the real-time change of the temperature of described heat exchanger, to check in described heat exchanger whether there is water.
16. methods according to claim 15, it is characterized in that, if when described pump stops, the difference of the outlet temperature of the water of the described heat exchanger between the value that the caloric memory phase in described heat exchanger stores and value detected within the time after the reactivating of described pump in preset range, then detects in described heat exchanger and there is water and there is effective water circulation.
17. 1 kinds for realizing the device of method according to claim 1, described method performs in the boiler, described boiler has airtight combustion chamber and comprises the device (10) for detecting the flame in burner (14), the control device (13) of functional part, described functional part comprises gas valve or fan, it is characterized in that, described device comprises the storage device (12) of many working curves comprising described boiler, according to the position of the present operating point detected on one of such device, combustion air/combustion gas is than being modified with along the such operating point of such curve movement, until obtain and the described correct corresponding best operating point that burns, described best operating point corresponds to best combustion air/gas ratio.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2010/000126 WO2011117896A1 (en) | 2010-03-24 | 2010-03-24 | Method and device for controlling an atmospheric boiler with an air tight combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102869923A CN102869923A (en) | 2013-01-09 |
| CN102869923B true CN102869923B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080065708.5A Active CN102869923B (en) | 2010-03-24 | 2010-03-24 | For controlling method and the device of the normal-pressure boiler with airtight combustion chamber |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2550483B1 (en) |
| CN (1) | CN102869923B (en) |
| EA (1) | EA024861B1 (en) |
| ES (1) | ES2667045T3 (en) |
| PL (1) | PL2550483T3 (en) |
| WO (1) | WO2011117896A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20120427A1 (en) * | 2012-03-19 | 2013-09-20 | Bertelli & Partners Srl | PERFECTED METHOD FOR THE ELECTRONIC ADJUSTMENT OF A FUEL MIXTURE, FOR EXAMPLE GAS, SENT TO A BURNER |
| RU2601021C1 (en) | 2012-09-21 | 2016-10-27 | Роузмаунт Инк. | Control of flame instability by thrust pressure and process variation |
| ITPD20120281A1 (en) * | 2012-09-27 | 2014-03-28 | Sit La Precisa S P A Con Socio Uni Co | METHOD FOR THE MONITORING AND CONTROL OF COMBUSTION IN COMBUSTIBLE GAS BURNERS AND COMBUSTION CONTROL SYSTEM OPERATING ACCORDING TO THIS METHOD |
| EP2971964B1 (en) | 2013-03-11 | 2017-11-29 | Idea S.p.A. | Burner combustion control method and device |
| GB2574674B (en) * | 2018-06-15 | 2020-10-28 | Thermo Fisher Scient Bremen Gmbh | Flame module |
| IT201800010736A1 (en) * | 2018-11-30 | 2020-05-30 | Bertelli & Partners Srl | MIXTURE CONTROL DEVICE FOR PRE-MIXED GAS BURNER |
| JP7413145B2 (en) | 2020-05-14 | 2024-01-15 | リンナイ株式会社 | combustion device |
| TWI804316B (en) * | 2022-05-17 | 2023-06-01 | 陳勝雄 | Smart boiler structure that can monitor temperature and combustion ratio |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1477667A (en) * | 1966-03-08 | 1967-04-21 | Thomson Houston Comp Francaise | Improvements to fluid combustion control systems, particularly in refinery furnaces |
| DE19502901C1 (en) * | 1995-01-31 | 1996-03-21 | Stiebel Eltron Gmbh & Co Kg | Regulating device for gas burner |
| DE10220772A1 (en) * | 2002-05-10 | 2003-11-20 | Bosch Gmbh Robert | Gas burner regulation method in which a measurement signal is used to define a regulation signal with a limiting value for an adjustable air number that is used to set the fuel to air ratio |
| DE10220773A1 (en) * | 2002-05-10 | 2003-11-20 | Bosch Gmbh Robert | Gas burner regulation method in which a signal from an ionization sensor is subject to spectral frequency analysis to set a fuel-air ratio for regulation of the burner |
-
2010
- 2010-03-24 WO PCT/IT2010/000126 patent/WO2011117896A1/en active Application Filing
- 2010-03-24 ES ES10718298.2T patent/ES2667045T3/en active Active
- 2010-03-24 PL PL10718298T patent/PL2550483T3/en unknown
- 2010-03-24 CN CN201080065708.5A patent/CN102869923B/en active Active
- 2010-03-24 EP EP10718298.2A patent/EP2550483B1/en active Active
- 2010-03-24 EA EA201290946A patent/EA024861B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1477667A (en) * | 1966-03-08 | 1967-04-21 | Thomson Houston Comp Francaise | Improvements to fluid combustion control systems, particularly in refinery furnaces |
| DE19502901C1 (en) * | 1995-01-31 | 1996-03-21 | Stiebel Eltron Gmbh & Co Kg | Regulating device for gas burner |
| DE10220772A1 (en) * | 2002-05-10 | 2003-11-20 | Bosch Gmbh Robert | Gas burner regulation method in which a measurement signal is used to define a regulation signal with a limiting value for an adjustable air number that is used to set the fuel to air ratio |
| DE10220773A1 (en) * | 2002-05-10 | 2003-11-20 | Bosch Gmbh Robert | Gas burner regulation method in which a signal from an ionization sensor is subject to spectral frequency analysis to set a fuel-air ratio for regulation of the burner |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2667045T3 (en) | 2018-05-09 |
| WO2011117896A1 (en) | 2011-09-29 |
| CN102869923A (en) | 2013-01-09 |
| EP2550483A1 (en) | 2013-01-30 |
| EA201290946A1 (en) | 2013-08-30 |
| EA024861B1 (en) | 2016-10-31 |
| EP2550483B1 (en) | 2018-03-07 |
| PL2550483T3 (en) | 2018-08-31 |
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