CN107166407A - A kind of valve opening adjusting method of waste incinerator - Google Patents
A kind of valve opening adjusting method of waste incinerator Download PDFInfo
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- CN107166407A CN107166407A CN201710361173.XA CN201710361173A CN107166407A CN 107166407 A CN107166407 A CN 107166407A CN 201710361173 A CN201710361173 A CN 201710361173A CN 107166407 A CN107166407 A CN 107166407A
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- pipe
- pipeline
- valve
- characteristic curve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/06—Regulating air supply or draught by conjoint operation of two or more valves or dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/30—Oxidant supply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention provides a kind of valve opening adjusting method of waste incinerator, including：Obtain characteristic curve of pipeline of the valve on each height pipe that First air is conveyed to combustion chamber under different opening；According to First air total flow and the assignment of traffic ratio of each height pipe, the flow of each height pipe is determined, and is illustrated respectively in the way of flow line in the characteristic curve of pipeline figure that the characteristic curve of pipeline of each sub- pipe is constituted；It is determined that the intersection point per the valve of height pipe in very aperture with its characteristic curve of pipeline, the straight line perpendicular to Y-axis is done respectively according to this intersection point, the intersection point of the straight line of maximum and the characteristic curve of pipeline of each sub- pipe wherein in Y-axis, is the optimization aperture combination of valve on current each sub- pipe.The present invention can ensure to realize that primary air flow on the premise of allocation proportion, each valve opening is arranged on the maximum of the permission under current allocation proportion between each height pipe, reduce the restriction loss produced at each valve, reduce the load of blower fan, save the energy.
Description
Technical field
The present invention relates to field of garbage disposal, the valve opening adjusting method of more particularly to a kind of waste incinerator.
Background technology
Waste incinerator is burning domestic garbage and produces the equipment of heat, is typically attached with waste heat boiler, is being burnt
Generated electricity while burning processing house refuse.House refuse is compared to conventional fuel, and its moisture is larger, in incinerator combustion
When being burnt in burning room, typically first pass through dryer section and be dried and preheat, enter back into burning zone and burnt, it is unburned sufficient
Rubbish residue is fully burned in ensuing after-flame section.When house refuse is burnt required First air via main pipe distribute to
Dry wind branched pipe, burning wind branched pipe and burnout degree branched pipe, correspondingly respectively enter dryer section, the burning zone of combustion chamber
With after-flame section, each section of demand to primary air flow is met.Waste incinerator is in actual moving process, in order to reach preferable combustion
Effect is burnt, it is necessary to which according to different refuse thermal value and combustion case, setting and control First air total amount and a wind flow are dry
Dry section, burning zone and after-flame section allocation proportion.
Waste incinerator generally sets aperture respectively on dry wind branched pipe, burning wind branched pipe and burnout degree branched pipe
Adjustable valve, field operator sets the aperture of valve to combine according to self-operating experience, needed for realizing current combustion
First air assignment of traffic ratio.In operative practice, for the allocation proportion of a wind flow, the operations staff of different teams and groups is led to
The empirical value of different valve opening combinations can be often formed according to experience, the First air distribution ratio of liquid flow of same setting is realized
Example.The method being controlled that field operator combines to valve opening, is typically set in centre by the aperture of each valve
A certain position, only focus on the First air assignment of traffic ratio realized needed for current combustion, and ignore valve opening to flowing
The influence of resistance.In the During Process of Long-term Operation of waste incinerator, above-mentioned method for controlling valve opening degree can cause the waste of the energy
And accelerate the loss of blower fan to consume.
The content of the invention
The invention aims to provide a kind of method for the optimal aperture regulation of each valve that can realize waste incinerator.
Especially, the present invention provides a kind of valve opening adjusting method of waste incinerator, comprises the following steps：
Step 100, pipeline of the valve on each height pipe that First air is conveyed to combustion chamber under different opening is obtained special
Linearity curve；
Step 200, according to First air total flow and the assignment of traffic ratio of each height pipe, the flow of each height pipe is determined,
And be illustrated respectively in the way of flow line in the characteristic curve of pipeline figure that the characteristic curve of pipeline of each sub- pipe is constituted；
Step 300, it is determined that intersection point of the valve in very aperture with its characteristic curve of pipeline per height pipe, according to this
Intersection point does the straight line perpendicular to Y-axis respectively, wherein in Y-axis the characteristic curve of pipeline of the straight line of maximum and each sub- pipe friendship
Point, is the optimization aperture combination of valve on current each sub- pipe.
In an embodiment of the invention, the characteristic curve of pipeline in the step 100 is by loss in head Δ P and stream
Measure qvBetween functional relation formed.
In an embodiment of the invention, in step 300, as other intersection points are not located at its characteristic curve of pipeline
When upper, then the opening value representated by the intersection point can be determined by two methods for closing on curve difference.
In an embodiment of the invention, the computational methods of the opening value are as follows：
Wherein, A, B are respectively the intersection point of the branch pipe flow line through the intersection point and adjacent two characteristic curve of pipeline, and K is
Valve opening value, L represents line segment length.
In an embodiment of the invention, described waste incinerator includes：
Combustion furnace, for burning away the refuse, is divided into dryer section, burning zone and after-flame section；
Main pipe, provides First air to the combustion furnace, is connected with blower fan；
Branch pipe, for connecting the main pipe and the combustion furnace, including the drying branch pipe connected with the dryer section, with institute
The burning son pipe of burning zone connection is stated, after-flame connected with after-flame section is managed, and control is separately installed with every height pipe
The valve of air quantity.
The present invention can ensure to realize that on the premise of allocation proportion, each valve is opened between each height pipe for primary air flow
Degree is arranged on the maximum of the permission under current allocation proportion, and the restriction loss produced at each valve is reduced to greatest extent,
The load of blower fan is reduced, the energy is saved.
In addition, the present invention can be provided for field operator under each assignment of traffic ratio setting value, valve opening
The optimal situation and regulation target of regulation are combined, and gives the operations staff for different teams and groups according to self-operating experience
The valve opening combination distinguishing rule which is better and which is worse of each self-forming.
Brief description of the drawings
Fig. 1 is the waste incinerator structural representation of one embodiment of the present invention；
Fig. 2 is the valve opening adjusting method flow chart of one embodiment of the present invention；
Fig. 3 is the characteristic curve of pipeline schematic diagram of each sub- pipe in Fig. 1；
Fig. 4 is that valve opening combination adjusts schematic diagram in the prior art；
Fig. 5 is valve opening regulation schematic diagram in one embodiment of the present invention；
Fig. 6 is the valve opening view of one embodiment of the present invention.
Embodiment
As shown in figure 1, the waste incinerator involved by the valve opening adjusting method of one embodiment of the present invention is general
Property include combustion furnace 1, main pipe 2 and branch pipe 3.
The combustion furnace 1 is used to burn away the refuse, different according to the treatment temperature to rubbish, is divided into dryer section, burning zone
With after-flame section.
The main pipe 2 is used to provide First air, frequency conversion fan 4 of the First air from connection to combustion furnace 1.
The branch pipe 3 is used to connect main pipe 2 and combustion furnace 1, respectively the sub- pipe 31 of the drying including being connected with dryer section, with burning
The Duan Liantong pipe 32 of burning, and the sub- pipe 33 of after-flame connected with after-flame section, are drying sub- pipe 31, the sub- pipe 32 of burning and after-flame
The valve 5 for controlling each sub- pipe to enter air quantity in combustion furnace 1 is separately installed with pipe 33.
Operationally, frequency conversion fan 4 controls the rotating speed of frequency conversion fan 4 according to the total flow signal of main pipe 2, makes in main pipe 2
First air total flow be maintained at setting value, pass through adjust dry sub- pipe 31, each valve 5 on burn sub- pipe 32 and the sub- pipe 33 of after-flame
Aperture, the First air in main pipe 2 is allocated according to the flow proportional of setting between each sub- pipe, subsequently into combustion furnace
1 diverse location.
Wherein, in the valve 5 on each sub- pipe, the aperture of at least one valve 5 is full-gear (100%), corresponds to this
The assignment of traffic ratio of other two valves 5 under state, be each sub- tube coupling stream loss reduction of current furnace 1 valve it is excellent
Degree of melting is combined.
As shown in Fig. 2 there is provided a kind of valve opening of foregoing waste incinerator tune in an embodiment of the invention
Section method, comprises the following steps：
Step 100, pipeline of the valve on each height pipe that First air is conveyed to combustion chamber under different opening is obtained special
Linearity curve；
Characteristic curve of pipeline can test measurement by way of by each sub- pipe loss in head Δ P (Y-axis) and flow qv(X
Axle) between functional relation come out with curve representation.
According to hydromechanical knowledge, loss in head Δ P and flow qvMeet relational expression：Δ P=Kqv 2, i.e. loss in head
Δ P and flow qvSquare be directly proportional, wherein K is referred to as the overall drag coefficient of pipeline, local resistance with pipeline and is hindered along journey
The many factors such as power are relevant.With the change of valve opening, K values are also corresponding to be changed, therefore for the different opening of every height pipe
One group of characteristic curve of pipeline is respectively obtained.(a), (b), (c) such as Fig. 3 is shown respectively and dries sub- pipe 31, burn sub- pipe 32 and combustion
The characteristic curve of pipeline figure of most sub- pipe 33.
Step 200, according to First air total flow and the assignment of traffic ratio of each height pipe, the flow of each height pipe is determined,
And be illustrated respectively in the way of flow line in the characteristic curve of pipeline figure that the characteristic curve of pipeline of each sub- pipe is constituted；
As shown in figure 4, for a certain particular flow rate of each height pipe, such as drying the flow q of sub- pipe 31v1, along the flow
From the bottom up, valve opening is gradually reduced corresponding dotted line in Fig. 4, and corresponding loss in head increases sharply.Connect with combustion furnace 1
The sub- pipe 31 of drying, burn sub- pipe 32, the sub- pipe 33 of after-flame connect can be considered parallel pipeline, according to hydromechanical knowledge, each parallel connection
The loss in head of pipeline is equal.That is, no matter how the total flow of main pipe 2 and the valve opening of each sub- pipe change, each height pipe
Loss in head always identical.Therefore, one is made in the piping flow line schematic diagram of each sub- pipe perpendicular to Y-axis (loss in head)
Horizontal dotted line, the dotted line and above-mentioned flow qv1、qv2And qv3The intersection point of identified three dotted lines perpendicular to X-axis (flow)
Representative opening value, as corresponding to the set sub- pipe flow q of dryingv1, burn sub- pipe flow qv2With the sub- pipe flow of after-flame
qv3One group of aperture combination of operating mode.
According to above-mentioned method.For an operating mode of each sub- pipe flow of setting, it can make a plurality of perpendicular to Y-axis
Horizontal dotted line, itself and qv1、qv2And qv3The identified three each group of intersection points perpendicular to the dotted line of X-axis, correspond to a kind of valve respectively
Door aperture combination.I.e. for same operating, a variety of aperture combinations are there are, set each branched pipe flow can be realized,
Their difference is different losses in head.
As shown in figure 5, the above-mentioned a plurality of horizontal dotted line perpendicular to Y-axis made corresponds to different Δ P in Y-axis.It is existing
Field operations staff combines according to determined by experience for a kind of valve opening of a certain assignment of traffic ratio, in Figure 5
It correspond to the opening value combination representated by one group of intersection point.
Step 300, it is determined that intersection point of the valve in very aperture with its characteristic curve of pipeline per height pipe, according to this
Intersection point does the straight line perpendicular to Y-axis respectively, wherein in Y-axis the characteristic curve of pipeline of the straight line of maximum and each sub- pipe friendship
Point, is the optimization aperture combination of valve on current each sub- pipe.
On the basis of Fig. 4, above-mentioned three vertical dotted lines and the pipeline spy corresponding to each aperture of branched pipe 100% are determined
The intersection point of linearity curve.Cross these three intersection points and make horizontal line perpendicular to Y-axis respectively, this three horizontal lines correspond to not in Y-axis
Same loss in head value Δ P1、ΔP2With Δ P3。ΔP1、ΔP2With Δ P3In maximum corresponding to horizontal line, with generation respectively
Each height pipe flow q of tablev1、qv2And qv3Three vertical dotted lines one group of intersection point representated by opening value, that is, obtain in setting
Under First air total flow and sub- pipe assignment of traffic ratio, the optimal value of each valve opening combination.
Such as in the example of hgure 5, Δ P2Corresponding solid horizontal line with representing each height pipe flow q respectivelyv1、qv2And qv3's
Opening value representated by one group of intersection point of three vertical dotted lines, is the optimal value of each valve opening combination under this operating mode.
As can be seen that in the First air total flow and branched pipe distribution ratio of liquid flow set by the operating mode from Fig. 5 example
Under example, there is Δ P in the loss in head value corresponding to three horizontal lines2>ΔP3>ΔP1Magnitude relationship.It can be obtained by Fig. 4, Δ P2It is right
The solid horizontal line answered is with representing the respective flow q of each branched pipev1、qv2And qv3Three vertical dotted lines three intersection point institute's generations
The opening value of table is respectively：20%, 100%, 40%.The aperture of valve 5 of sub- pipe 32 of burning reaches full-gear, and dries
The aperture of the valve 5 of sub- pipe 31 is 20%, and the aperture of the valve 5 of the sub- pipe 33 of after-flame is 40%.It can be seen from above-mentioned analysis, this
Valve opening combination can realize the First air total flow and each sub- pipe assignment of traffic ratio of setting, and guarantee three is met again
The regulation requirement that the valve of at least one in valve is shown in a fully open operation.
Present embodiment under the First air total flow and branched pipe assignment of traffic ratio of setting, it is determined that each sub- tube valve
During aperture combination is all feasible valve openings combinations, restriction loss is minimum, advantageously reduces blower fan load, saves energy
Source.
In an embodiment of the invention, loss in head is compared to Δ P2Less Δ P3Corresponding horizontal dotted line with
Represent the flow q of the sub- pipe 33 of after-flamev3Although vertical dotted line intersection point also be 100% aperture, itself and represent burning son pipe
32 flow qv2Vertical dotted line intersection point be but located at the sub- pipe 32 of burning the corresponding characteristic curve of pipeline of 100% aperture bottom right
Side, it means that in order to realize the First air total flow and each sub- pipe assignment of traffic ratio of setting, it is necessary to by the sub- pipe 32 of burning
Valve opening sets the position arrived more than 100% aperture, and this is not achievable, therefore the combination of this group of aperture is not present.Pressure
The smaller Δ P of head loss1Corresponding horizontal dotted line there is also it is same the problem of.Therefore, less than Δ P determined by step 3002It is right
The aperture combination for the solid horizontal line answered is not achievable.
And in Δ P2The horizontal line made on corresponding solid horizontal line, although can realize, but its loss in head Δ P
More than Δ P2, compared to Δ P2Valve opening combination can cause extra restriction loss determined by corresponding solid horizontal line.
Further, in an embodiment of the invention, if Δ P in step 3002Corresponding solid horizontal line is with representing
Each respective flow q of height pipev1、qv2And qv3Three vertical dotted lines three intersection points among occur not being located in Fig. 4 and show
During situation on characteristic curve of pipeline, then the aperture representated by the intersection point can be determined by two methods for closing on curve difference
Value.As shown in fig. 6, Δ P2Corresponding solid horizontal line is with representing flow qv1The intersection point C of vertical dotted line not to be located at pepeline characteristic bent
On line.Represent flow qv1Two characteristic curve of pipeline closing on of vertical dotted line and intersection point C meet at point A and point B respectively.With K come
Valve opening value is represented, L represents line segment length, then the valve opening value K that intersection point C is representedCCan with following difference approach come
It is determined that：
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (5)
1. the valve opening adjusting method of a kind of waste incinerator, it is characterised in that comprise the following steps：
Step 100, pepeline characteristic of the valve on each height pipe that First air is conveyed to combustion chamber under different opening is obtained bent
Line；
Step 200, according to First air total flow and the assignment of traffic ratio of each height pipe, the flow of each height pipe is determined, and with
The mode of flow line is illustrated respectively in the characteristic curve of pipeline figure of the characteristic curve of pipeline of each sub- pipe composition；
Step 300, it is determined that intersection point of the valve in very aperture with its characteristic curve of pipeline per height pipe, according to this intersection point
Do the straight line perpendicular to Y-axis respectively, wherein in Y-axis the characteristic curve of pipeline of the straight line of maximum and each sub- pipe intersection point, i.e.,
For the optimization aperture combination of valve on current each sub- pipe.
2. valve opening adjusting method according to claim 1, it is characterised in that
Characteristic curve of pipeline in the step 100 is by loss in head Δ P and flow qvBetween functional relation formed.
3. valve opening adjusting method according to claim 1, it is characterised in that
In step 300, when not being located at such as other intersection points on its characteristic curve of pipeline, then curve difference can be closed on by two
The method of value determines the opening value representated by the intersection point.
4. valve opening adjusting method according to claim 3, it is characterised in that
The computational methods of the opening value are as follows：
<mrow>
<msub>
<mi>K</mi>
<mi>C</mi>
</msub>
<mo>=</mo>
<msub>
<mi>K</mi>
<mi>A</mi>
</msub>
<mo>+</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>K</mi>
<mi>B</mi>
</msub>
<mo>-</mo>
<msub>
<mi>K</mi>
<mi>A</mi>
</msub>
<mo>)</mo>
</mrow>
<mo>&times;</mo>
<mfrac>
<msub>
<mi>L</mi>
<mrow>
<mi>A</mi>
<mi>C</mi>
</mrow>
</msub>
<msub>
<mi>L</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
</mrow>
</msub>
</mfrac>
</mrow>
Wherein, A, B are respectively the intersection point of the branch pipe flow line through the intersection point and adjacent two characteristic curve of pipeline, and K is valve
Opening value, L represents line segment length.
5. valve opening adjusting method according to claim 1, it is characterised in that
Described waste incinerator includes：
Combustion furnace, for burning away the refuse, is divided into dryer section, burning zone and after-flame section；
Main pipe, provides First air to the combustion furnace, is connected with blower fan；
Branch pipe, for connecting the main pipe and the combustion furnace, including the drying branch pipe connected with the dryer section, with the combustion
The burning son pipe of section connection is burnt, after-flame connected with after-flame section is managed, and control air quantity is separately installed with every height pipe
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361173.XA CN107166407A (en) | 2017-05-22 | 2017-05-22 | A kind of valve opening adjusting method of waste incinerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361173.XA CN107166407A (en) | 2017-05-22 | 2017-05-22 | A kind of valve opening adjusting method of waste incinerator |
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| CN107166407A true CN107166407A (en) | 2017-09-15 |
Family
ID=59816157
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| CN201710361173.XA Pending CN107166407A (en) | 2017-05-22 | 2017-05-22 | A kind of valve opening adjusting method of waste incinerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855224A (en) * | 2022-05-10 | 2022-08-05 | 西安格睿能源动力科技有限公司 | Method for balancing the collection of flue gases from gas collection hoods of a plurality of electrolysis cells |
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Cited By (2)
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| CN114855224A (en) * | 2022-05-10 | 2022-08-05 | 西安格睿能源动力科技有限公司 | Method for balancing the collection of flue gases from gas collection hoods of a plurality of electrolysis cells |
| CN114855224B (en) * | 2022-05-10 | 2024-02-20 | 西安格睿能源动力科技有限公司 | Method for balancing flue gas collection amount of multiple electrolytic tank gas collecting hoods |
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