CN206377672U - It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device - Google Patents
It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device Download PDFInfo
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- CN206377672U CN206377672U CN201720005332.8U CN201720005332U CN206377672U CN 206377672 U CN206377672 U CN 206377672U CN 201720005332 U CN201720005332 U CN 201720005332U CN 206377672 U CN206377672 U CN 206377672U
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Abstract
The utility model be related to it is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device.The control device that purpose is to provide reasonable distribution on fire grate when can make incineration firing, burning is abundant.Technical scheme is：It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device, including pusher, backstepping fire grate, forwards fire grate, the hydraulic system comprising hydraulic valve and oil cylinder and fire grate PLC；It is characterized in that the pusher, backstepping fire grate and forwards fire grate divide equally left and right two row arrangement；Two row pushers, two row backstepping fire grates, two row forwards fire grates are driven by independent hydraulic valve control cylinder respectively, and are controlled respectively by fire grate PLC.
Description
Technical field
The utility model is related to a kind of waste incinerator, specifically two-period form garbage incinerator fire grate control device.
Background technology
Waste incineration can realize the minimizing of garbage disposal, innoxious and recycling simultaneously, more and more general in China
And.But China's domestic city house refuse gives fire grate burning because not sorting with complicated component, calorific value be low, the higher feature of moisture
Control brings difficulty；Two-period form reciprocal garbage incinerator grates point backstepping fire grate and forwards fire grate, rubbish burn in backstepping section
Afterwards, turn over and fall on forwards fire grate and burn away to after-flame, be the garbage incineration equipment for being adapted to the feature.
Fire grate in the existing reciprocal waste incinerator of two-period form generally arranges the fire grate being arranged symmetrically by left and right two and constituted, existing
Have and use synchronization action left column and right row pusher, fire grate more when being automatically controlled in technology.Because component of refuse is complicated, bulk density
The reason, both sides thickness of feed layer difference when can cause to burn such as irregular, local bridge formation of distribution in difference and material-falling hopper；If both sides
Thickness of feed layer has big difference, then can one side bed of material after-flame and the another side bed of material do not burn also abundant, do not cause resource abundant
Utilize.Bed of material distribution relies primarily on the experience of operator, it is necessary to which operator frequently adjusts manually when backstepping fire grate, the burning of forwards fire grate
The action of whole fire grate and First air distribution adjustment, adjustment be easily caused that part incineration firing is insufficient not in time or incinerator load not
It is stable.
Utility model content
The purpose of this utility model is when overcoming the defect present in above-mentioned background technology to make incineration firing there is provided one kind
The reasonable distribution on fire grate, burn sufficient control device.
The utility model provide technical scheme be：It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control dress
Put, including pusher, backstepping fire grate, forwards fire grate, the hydraulic system comprising hydraulic valve and oil cylinder and fire grate PLC；Its feature
It is that the pusher, backstepping fire grate and forwards fire grate divide equally left and right two row arrangement；Two row pushers, two row backstepping fire grates, two
Row forwards fire grate is driven by independent hydraulic valve control cylinder respectively, and is controlled respectively by fire grate PLC.
The two row backstepping fire grate be respectively arranged with above and below pressure difference measurement converter.
The two row forwards fire grate be respectively arranged with above and below pressure difference measurement converter.
Air-supply flowmeter is respectively arranged with the First air intake line of the two row backstepping fire grate.
Air-supply flowmeter is respectively arranged with the First air intake line of the two row forwards fire grate.
Operation principle of the present utility model is：By measuring two row backstepping fire grates of left and right or the row forwards fire grate of left and right two respectively
The bed of material above and below First air air output under pressure difference and each column fire grate, fire grate PLC can calculate left and right row backstepping fire grate or a left side
Thickness of feed layer on right row forwards fire grate.When the thickness of feed layer on the row backstepping fire grate of left and right is in control range, then left and right is arranged
Pusher and left and right row backstepping fire grate synchronization action frequency are consistent；When having, the bed of material on a row backstepping fire grate is partially thick, Ling Yilie
When backstepping fire grate is normal, then left and right row pusher and left and right row backstepping fire grate are subjected to off-the-line simultaneously, increase that of bed of material thickness partially
The operating frequency of one row backstepping fire grate and the operating frequency for reducing that corresponding row pusher；When having on a row backstepping fire grate
When the bed of material is partially thin, another row backstepping fire grate is normal, then by left and right row pusher and left and right row backstepping fire grate off-the-line simultaneously, reduce material
The operating frequency of layer thin that row backstepping fire grate partially simultaneously increases the operating frequency of that corresponding row pusher；When left and right arranges inverse
Push away the bed of material on fire grate it is partially thick when, then row pusher in left and right synchronously reduces operating frequency, while left and right row backstepping fire grate is synchronous
Increase operating frequency；When the bed of material bed of material on the row backstepping fire grate of left and right is partially thin, then the synchronous increase action of left and right row pusher
Frequency, while left and right row backstepping fire grate synchronously reduce operating frequency.
Pass through pressure difference above and below the bed of material of two row forwards fire grates of measurement left and right and the First air air output under each column fire grate, stove
Row PLC can calculate the thickness of feed layer on the row forwards fire grate of left and right；When the thickness of feed layer on the row forwards fire grate of left and right is in control
In the range of when then left and right row forwards fire grate synchronization action frequency it is consistent；When having, the bed of material on a row forwards fire grate is partially thick, Ling Yilie
When forwards fire grate is normal, then by left and right row forwards fire grate off-the-line, the operating frequency of the increase bed of material that row forwards fire grate of thickness partially；
When having that the bed of material on a row forwards fire grate is partially thin, another row forwards fire grate is normal, then by left and right row forwards fire grate off-the-line, reduce
The operating frequency of the bed of material thin that row forwards fire grate partially；When the bed of material on the row forwards fire grate of left and right is partially thick, then left and right is arranged
Forwards fire grate synchronously increases operating frequency；When the layer on the row forwards fire grate material of left and right is partially thin, then left and right row forwards fire grate is same
Step reduces operating frequency.
Compared with prior art, stocker control device described in the utility model has advantages below：
The row pusher of the utility model or so two, backstepping fire grate, forwards fire grate are driven by independent hydraulic drive cylinder respectively, stove
Row's lower section air supply duct and fire grate thickness of feed layer correlative measurement press left and right two-way arrangement, and the row fire grate of left and right two can root when automatically controlling
Be synchronized with the movement according to thickness of feed layer selection on fire grate or off-the-line motion (i.e. the row of left and right two release identical frequency and synchronous transported with what is stopped with opening
Dynamic relation is moved using different frequency), the utility model can be prevented due to component of refuse complexity, bulk density difference and blanking
Fire grate both sides thickness of feed layer difference is excessive when the reason such as irregular local bridge formation of distribution causes to burn in struggling against causes one side after-flame another
Do not burn also abundant in side；When can make incineration firing on backstepping, forwards fire grate reasonable distribution, realize the substantially stabilized combustion of refuse furnace
The control targe of burning, stable waste incinerator load.
Brief description of the drawings
Fig. 1 is two-period form waste incinerator structural representation.
Fig. 2 is the cross section structure schematic diagram of backstepping fire grate.
Fig. 3 is the annexation schematic diagram of control device.
In figure：Pressure difference measurement converter above and below 1- pushers, 2- backstepping fire grates, 3- forwards fire grates, 4- backstepping fire grates, 5- is suitable
Flowmeter of being blown under flowmeter of being blown under pressure difference transmitter above and below fire grate, 6- backstepping fire grates, 7- forwards fire grates is pushed away, control is pushed away
The oil cylinder 12 with hydraulic valve of glassware, controls the oil cylinder 11 with hydraulic valve of backstepping fire grate, controls carrying for forwards fire grate
The oil cylinder 10 of hydraulic valve.
Embodiment
Further illustrated below in conjunction with embodiment shown in the drawings.
In two-period form refuse furnace shown in the drawings, rubbish is pushed into backstepping fire grate through pusher by material-falling hopper and burned, and rubbish exists
After the burning of backstepping section, turn over and fall on forwards fire grate and burn away to after-flame；First air adjusts wind by backstepping damper, forwards respectively
Feeding backstepping fire grate, forwards fire grate after door regulation air quantity.Pusher, backstepping fire grate, forwards fire grate in the utility model and send
It is (visible in Fig. 2 that air pipe line divides equally left and right two row arrangement：Backstepping fire grate includes left column backstepping fire grate and right row backstepping fire grate；Dotted line
Represent annexation.Forwards fire grate is omitted in figure).Two row pushers, two row backstepping fire grates, two row forwards fire grates are respectively by independent
Hydraulic valve control cylinder (controls the oil cylinder 12 with hydraulic valve of pusher, controls the oil with hydraulic valve of backstepping fire grate
Cylinder 11 and the oil cylinder 10 with hydraulic valve for controlling forwards fire grate, the left and right two row arrangement of these oil cylinders) driving, and by PLC
Output signal is controlled；The row pusher of left and right two, backstepping fire grate and forwards fire grate not only synchronization action but also can be moved individually after off-the-line
Make；Pressure difference transmitter 4 (its positive pressure side measurement point 42 air outlet, negative pressure end measurement point under fire grate above and below the bed of material of backstepping fire grate
The 41 incinerator burner hearth above fire grate), above and below the bed of material of forwards fire grate pressure difference transmitter 5 (its positive pressure side measurement point 52 is in stove
The lower incinerator burner hearth of air outlet, negative pressure end measurement point 51 above fire grate of row), the air measuring for pipeline of blowing under backstepping fire grate
The air measuring instrument 7 (i.e. air flow sensor) of air-supply pipeline under instrument 6 (i.e. air flow sensor) and forwards fire grate, not according to a left side
Right two row fire grates correspondence is arranged, and is connected to fire grate PLC input, and control signal is sent after fire grate PLC processing.Fire grate PLC
With full factory DCS by communication be connected, transmission information.
The control method of garbage incinerator fire grate described in the utility model is as follows：
1) master mode selects stable boiler capacity or fire box temperature to adjust pusher, backstepping fire grate, forwards fire grate
Operating frequency.
2) respectively measurement judge left and right row backstepping fire grate thickness of feed layer whether in control range, come determine pusher and
Whether backstepping fire grate operating frequency needs to make left and right off-the-line amendment.
3) measurement judges left and right row forwards fire grate thickness of feed layer whether in control range respectively, to determine that forwards fire grate is moved
Whether working frequency needs to make left and right off-the-line amendment.
A do action cycle time of each column pusher (or fire grate) is made up of two parts in the utility model：Action
Time T_on (including advance time, backoff time) and stop stand-by period T_off.Actuation time T_on in one action cycle
It is constant, it can just change operating frequency by changing stop stand-by period T_off；The utility model makes in control operation rule
Joined with the time action cycle T of pusher (or fire grate) complete action once (including advance, retreat, residence time)
With computing, here T=T_on+T_off.Obviously, when time action cycle, T values were bigger, pusher (or fire grate) operating frequency
Slower, the speed of rubbish push-in (or being stirred on fire grate) is slower；When time action cycle, T values were smaller, pusher (or stove
Row) operating frequency is faster, and the speed of rubbish push-in (or being stirred on fire grate) is faster.The utility model is first with control rule meter
Each column pusher, fire grate action cycle time T (T minimum value is T_on) are calculated, then in conjunction with its actuation time T_on (by advancing
Time is added with backoff time), the stop stand-by period T_off in its a cycle is calculated, so as to control each column pusher
The action of (or fire grate).
Specific control process is set forth below.
First, rate-determining steps S1
The master mode of the present invention has 2 kinds：Evaporation capacity control model based on stable residual heat boiler capacity and stably
The Control for Kiln Temperature pattern of fire box temperature.Opening the Control for Kiln Temperature pattern of stove starting stage optional stable fire box temperature；Set stove
Bore temperature scope is that SV_L~SV_H (when calorific value difference of burning away the refuse is small, can adjust SV_H, SV_L scopes are smaller；When burning rubbish
When rubbish calorific value difference is big, SV_H is can adjust, SV_L scopes are more greatly；SV_L necessarily be greater than 850 DEG C).The present invention is using circulation meter
The each cycle calculations of this step S1 are pressed following rule by the method for calculation：When measuring fire box temperature in setting range, pusher,
The action of fire grate is constant；When measuring fire box temperature less than the low value SV_L set, respectively by pusher, backstepping fire grate, forwards stove
Time action cycle T of row or so synchronously reduces C1 × 5%, C2 × 5%, C3 × 5%, with pusher, fire grate operating frequency
Increase, stove chamber inner combustion quantity of refuse gradually increases furnace temperature and will slowly uprised；When measure fire box temperature higher than setting high level SV_
During H, pusher, backstepping fire grate, the time action cycle T of forwards fire grate or so are synchronously increased into C1 × 5%, C2 × 5%, C3 respectively
× 5% (C1, C2, C3 are coefficient of balance here, are adjusted in debugging), furnace temperature is gradually reduced with stove chamber inner combustion quantity of refuse
To slowly step-down；Final fire box temperature is stable in setting value SV_L~SV_H.
When fire box temperature after a period of stabilisation, by Control for Kiln Temperature pattern switching to evaporation capacity control model, control process
It is similar with above-mentioned Control for Kiln Temperature pattern；The setting value of evaporation capacity exists with reference to waste heat boiler standard condition value, fire box temperature stabilization
Boiler capacity when in setting range sets SV_H, SV_L.Furnace temperature described above, evaporation capacity signal, fire grate PLC by with
The mode of DCS communications is obtained.
2nd, rate-determining steps S2
Pressure difference and First air air output below first above and below two row backstepping fire grates of measurement left and right.
The point layout selection of pressure difference is above and below main combustion section fire grate above and below backstepping fire grate, referring to Fig. 1,2：Left and right row fire grate pressure
Poor transmitter is respectively mounted measurement, wherein positive pressure side is connected to air outlet under fire grate, negative pressure end probe tube is through on two row fire grates
In square side wall insertion stove (its position should be higher than that height during bed of material highest, and boiler water wall is avoided again).Above and below forwards fire grate
Pressure difference point layout is similar to backstepping fire grate.2 sides of left and right are adjusted by different dampers respectively below backstepping fire grate, forwards fire grate
Section air quantity is simultaneously respectively arranged air quantity inspection instrument.
Waste layer thickness is calculated using below equation on fire grate：L is rubbish thickness in L=Dp/F1 (X) × C1, formula, and Dp is
Pressure difference above and below filtered backstepping fire grate, X is the First air air quantity by backstepping fire grate, and F1 (X) is backstepping fire grate thickness of feed layer
Air quantity penalty function, C1 is backstepping fire grate thickness of feed layer conversion coefficient.
Further, judge backstepping fire grate thickness of feed layer whether in control range determine pusher, backstepping fire grate action whether
Left and right off-the-line amendment, backstepping fire grate thickness of feed layer control range (can suitably be adjusted) in 600~1000mm according to rubbish situation, when
Thickness of feed layer thinks that the bed of material thinks that the bed of material is partially thin when thick, thickness of feed layer is less than 600mm partially when being more than 1000mm.To this step, often
Secondary cycle calculations press following rule：When the row thickness of left and right two, in control range, then the row of pusher, backstepping fire grate or so two are synchronous dynamic
Do not correct, otherwise make following correct：
1) when the left column backstepping fire grate bed of material is partially thick, the right row bed of material is normal, left and right row pusher, backstepping fire grate off-the-line are moved
Make：Left column pusher action cycle time T increases by 5%, left column backstepping fire grate action cycle time T reduce C4 × 5%, and right row are pushed away
Glassware, the action of right row backstepping fire grate are constant；
2) when the left column backstepping fire grate bed of material is partially thin, the right row bed of material is normal, left and right row pusher, backstepping fire grate off-the-line are moved
Make：Left column pusher action cycle time T reduces 5%, left column backstepping fire grate action cycle time T increase C4 × 5%, and right row are pushed away
Glassware, the action of right row backstepping fire grate are constant；
3) when the left column bed of material is normal, the right row backstepping fire grate bed of material is partially thick, left and right row pusher, backstepping fire grate off-the-line are moved
Make：Left column pusher, the action of left column backstepping fire grate are constant, right row pusher action cycle time T increases by 5%, right row backstepping stove
Arrange time action cycle T reduction C4 × 5%；
4) when the left column bed of material is normal, the right row backstepping fire grate bed of material is partially thin, left and right row pusher, backstepping fire grate off-the-line are moved
Make：Left column pusher, the action of left column backstepping fire grate are constant, and right row pusher action cycle time T reduces 5%, right row backstepping stove
Arrange time action cycle T increase C4 × 5%；
5) when the left and right row backstepping fire grate bed of material is all partially thick, then left and right row pusher action cycle time T is synchronously increased
5%th, left and right row backstepping fire grate action cycle time T synchronously reduces C4 × 5%；
6) when the left and right row backstepping fire grate bed of material is all partially thin, then left and right row pusher action cycle time T is synchronously reduced
5%th, left and right row backstepping action time action cycle T synchronously increases C4 × 5%；
Above constant C4 is balance system, is adjusted in debugging.
3rd, rate-determining steps S3
Pressure difference and the First air air output under it first above and below two row forwards fire grates of measurement left and right.The forwards fire grate bed of material is surveyed
Point arrangement and computational methods are similar with backstepping fire grate, in wherein bed of material calculation formula L=Dp/F2 (X) × C.Rubbish on forwards fire grate
Rubbish thickness degree is calculated using below equation：L is rubbish thickness in L=Dp/F2 (X) × C, formula, and Dp is filtered forwards fire grate
Pressure difference up and down, X is the First air air quantity by forwards fire grate, and F2 (X) is forwards fire grate thickness of feed layer air quantity penalty function, and C2 is
Forwards fire grate thickness of feed layer conversion coefficient.
According to forwards fire grate thickness of feed layer, determine whether the action of forwards fire grate needs the rule for making left and right off-the-line amendment to be：
Forwards fire grate thickness of feed layer control range (can suitably be adjusted) in 200~400mm according to rubbish situation；When thickness of feed layer is more than
Think that the bed of material thinks that the bed of material is partially thin when thick, thickness of feed layer is less than 200mm partially during 400mm.Each cycle calculations press following rule：When
The row thickness of left and right two in control range, then do not correct by the row synchronization action of forwards fire grate or so two, otherwise makees following correct：
1. when the left column forwards fire grate bed of material is partially thick, the right row bed of material is normal, left and right row forwards fire grate off-the-line is acted：Left column
Forwards fire grate action cycle time T reduces 5%, and it is constant that right row forwards pushes away fire grate action；
2. when the left column forwards fire grate bed of material is partially thin, the right row bed of material is normal, left and right row forwards fire grate off-the-line is acted：Left column
Forwards fire grate action cycle time T increases by 5%, it is constant that right row forwards pushes away fire grate action；
3. when the left column forwards fire grate bed of material is normal, the right row bed of material is partially thick, left and right row forwards fire grate off-the-line is acted：Left column
The action of forwards fire grate is constant, and right row forwards pushes away fire grate action cycle time T and reduces 5%；
4. when the left column forwards fire grate bed of material is normal, the right row bed of material is partially thin, left and right row forwards fire grate off-the-line is acted：Left column
The action of forwards fire grate is constant, and right row forwards pushes away fire grate action cycle time T increases by 5%；
5. when the left and right row forwards fire grate bed of material is all partially thick, then left and right row forwards fire grate action cycle time T is synchronously subtracted
It is small by 5%；
6. when the left and right row forwards fire grate bed of material is all partially thin, then left and right row forwards fire grate action cycle time T is synchronously increased
Plus 5%.
Claims (5)
1. it is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device, it is including pusher (1), backstepping fire grate (2), suitable
Push away fire grate (3), hydraulic system and fire grate PLC；It is characterized in that the pusher, backstepping fire grate and forwards fire grate divide equally it is left,
The row arrangement of the right side two；The oil cylinder that two row pushers, two row backstepping fire grates, two row forwards fire grates are controlled by independent hydraulic valve respectively drives
It is dynamic, and controlled by fire grate PLC output signals.
2. it is according to claim 1 can off-the-line operation two-period form garbage incinerator fire grate control device, it is characterised in that：Institute
State two row backstepping fire grates be respectively arranged with above and below pressure difference measurement converter (4).
3. it is according to claim 1 can off-the-line operation two-period form garbage incinerator fire grate control device, it is characterised in that：Institute
State two row forwards fire grates be respectively arranged with above and below pressure difference measurement converter (5).
4. according to Claims 2 or 3 can off-the-line operation two-period form garbage incinerator fire grate control device, its feature exists
In：Air-supply flowmeter (6) is respectively arranged with the First air intake line of the two row backstepping fire grate.
5. it is according to claim 4 can off-the-line operation two-period form garbage incinerator fire grate control device, it is characterised in that：Institute
Air-supply flowmeter (7) is respectively arranged with the First air intake line for stating two row forwards fire grates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720005332.8U CN206377672U (en) | 2017-01-04 | 2017-01-04 | It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720005332.8U CN206377672U (en) | 2017-01-04 | 2017-01-04 | It is a kind of can off-the-line operation two-period form garbage incinerator fire grate control device |
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| CN206377672U true CN206377672U (en) | 2017-08-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990327A (en) * | 2017-12-16 | 2018-05-04 | 上海康恒环境股份有限公司 | Waste incinerator pusher mechanical synchronization running gear |
| CN116293693A (en) * | 2023-02-15 | 2023-06-23 | 江苏耀先环境设备有限公司 | Grate type incinerator and preparation method thereof |
| CN116481033A (en) * | 2023-05-19 | 2023-07-25 | 北京中科润宇环保科技股份有限公司 | Automatic combustion control method for universal household garbage incinerator |
-
2017
- 2017-01-04 CN CN201720005332.8U patent/CN206377672U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990327A (en) * | 2017-12-16 | 2018-05-04 | 上海康恒环境股份有限公司 | Waste incinerator pusher mechanical synchronization running gear |
| CN116293693A (en) * | 2023-02-15 | 2023-06-23 | 江苏耀先环境设备有限公司 | Grate type incinerator and preparation method thereof |
| CN116293693B (en) * | 2023-02-15 | 2024-04-12 | 江苏耀先环境设备有限公司 | Grate type incinerator and preparation method thereof |
| CN116481033A (en) * | 2023-05-19 | 2023-07-25 | 北京中科润宇环保科技股份有限公司 | Automatic combustion control method for universal household garbage incinerator |
| CN116481033B (en) * | 2023-05-19 | 2024-03-05 | 北京中科润宇环保科技股份有限公司 | Automatic combustion control method for universal household garbage incinerator |
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