CN105674296A - False crash control method and device of fire grate control system - Google Patents
False crash control method and device of fire grate control system Download PDFInfo
- Publication number
- CN105674296A CN105674296A CN201610068040.9A CN201610068040A CN105674296A CN 105674296 A CN105674296 A CN 105674296A CN 201610068040 A CN201610068040 A CN 201610068040A CN 105674296 A CN105674296 A CN 105674296A
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- fire grate
- guard time
- control module
- control
- dcs
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a false crash control method and device of a fire grate control system. The false crash control method comprises the following steps: setting protecting time through a DCS control unit; controlling a fire grate to begin to advance by using the DCS control unit, and meanwhile, controlling advancing protecting time to begin to count down by using the DCS control unit; judging whether the fire grate runs to the foremost end or not, whether a detecting element detects completion of advancing of the fire grate or not, and whether an advancing completion detecting signal is transmitted to the DCS control unit or not before or while zero clearing of the advancing protecting time; controlling reversing of the fire grate by the DCS control unit; meanwhile, resetting the protecting time; and controlling the fire grate to begin to move back through the DCS control unit in a similar way until garbage in a fire grate incineration system is effectively incinerated totally and a whole incineration operation process is completed.
Description
Technical field
The present invention relates to waste incineration control technology field, more particularly, relate to a kind of anti-seemingly-dead control method and device thereof of stocker control system.
Background technology
Fire grate be in the incinerator of consumer waste incineration power plant for banking up house refuse be effective the parts of burning, be directly connected to waste incineration quality. All fire grate producers all adopt hydraulic-driven both at home and abroad, and are all reciprocating operations. Be that fire grate advances, have foremost the detection components and parts that put in place that advance, after sensing and advancing and put in place, will send a signal and inform control terminal, control terminal is cancelled advancement commands; Fire grate retreats, and rearmost end has one to retreat the detection components and parts that put in place, after sensing and retreating and put in place, will send a signal and inform control terminal, and control terminal is cancelled and retreated instruction. Fire grate torpor refers to, under the continuous running status of fire grate, certain a part of fire grate is not accepted control command because of mechanical bite, rests on for a long time the phenomenon of original position.
In consumer waste incineration power plant the inside, except normal shutdown maintenance, all the other time fire grates are all to move continuously, and under normal circumstances, annual accumulated running time is not less than 330 days, need 300 left and right of advance and retreat commutation in needing every day. Under the pattern of continuous circulation, often cause fire grate bite because of higher components of hardness such as screw, building waste, bottle caps in component of refuse, rest on for a long time original position, be fire grate in torpor, more hidden because of this problem, operations staff realizes the very difficult very first time. And in this case, on this section of fire grate, rubbish can not get stirring for a long time, thereby more heap is thicker, greatly reduces the penetration capacity of a wind, has a strong impact on burning effect.
Occurring after " seemingly-dead " phenomenon, according to operation conditions, operator on duty needs manually to control fire grate, operation repeatedly repeatedly, until bite is eliminated, and work dry as dust so had both taken a large amount of time and efforts of operator on duty, be easy to again mislead operator on duty and miss crucial changes in process parameters because being busy with operating fire grate, very unfavorable to production management.
Summary of the invention
In view of this; for traditional stocker control mode, the present invention proposes a kind of anti-seemingly-dead control method and device thereof of stocker control system, and it is actual in to prevent seemingly-dead protection control loop in having increased by one; on former control loop, be provided with guard time, can manually set. Its effect is: in the time of the normal operation continuously of fire grate, be as the criterion with detection signal, detect after detection signal, start commutation. Once fire grate generation bite, detection signal is lost, and is just as the criterion with corresponding guard time, after guard time timing finishes, starts commutation, can on operations staff's monitored picture, send an alarm signal simultaneously, reminds operations staff to go site inspection.
The present invention proposes a kind of anti-seemingly-dead control method of stocker control system, comprises the steps:
Step 1: set guard time by DCS control module, this guard time according to fire grate advance, fire grate retreats two kinds of processes and is set with respectively the guard time that advances, retreats guard time;
Step 2: DCS control module control fire grate starts forward stroke, meanwhile, this this guard time that advances of DCS control module control starts countdown;
Before advancing guard time zero clearing at this or when zero clearing, fire grate runs to foremost, detects components and parts and detects that fire grate forward stroke completes, and sends forward stroke to DCS control module and completes detection signal, DCS control module control fire grate commutation, the guard time that simultaneously makes to advance resets;
After advancing guard time zero clearing at this, fire grate off-duty arrives foremost, cannot detect that fire grate forward stroke completes by detecting components and parts, DCS control module only can recognize the guard time zero clearing of advancing, and fail to detect that forward stroke completes detection signal, by DCS control module control alarm equipment alarm, simultaneously by the commutation of DCS control module control fire grate, and the guard time that makes to advance resets;
Step 3: DCS control module control fire grate starts backward travel, meanwhile, this retreats this DCS control module control guard time and starts countdown;
Before retreating guard time zero clearing at this or when zero clearing, fire grate runs to least significant end, detects components and parts and detects that fire grate backward travel completes, and sends backward travel to DCS control module and completes detection signal, DCS control module control fire grate commutation, makes to retreat guard time simultaneously and resets;
After retreating guard time zero clearing at this, fire grate off-duty is to least significant end, cannot detect that fire grate backward travel completes by detecting components and parts, DCS control module only can recognize and retreat guard time zero clearing, and fail to detect that backward travel completes detection signal, by DCS control module control alarm equipment alarm, simultaneously by the commutation of DCS control module control fire grate, and make to retreat guard time reset;
Step 4: operating procedure two and step 3 repeatedly, until the rubbish in fire grate CIU is all effectively burned, completes and burn operation overall process.
The described guard time that advances, retreat guard time and equal respectively that fire grate advances and fire grate has retreated the maximum time of stroke separately.
Described alarm is acoustic-optic alarm.
Described detection components and parts are approach switch.
The present invention also proposes a kind of anti-seemingly-dead control device of stocker control system, comprise DCS control module, described DCS control module comprises stocker control unit, described stocker control unit connects and controls fire grate, and stocker control unit connects approach switch, also comprise timing unit, described timing unit connects this stocker control unit.
Described timing unit comprises the countdown unit and retreat countdown unit of advancing, and connects respectively stocker control unit.
Also comprise alarm, described alarm connects DCS control module.
Described alarm is audible and visible alarm device.
The advantage that the present invention has is: the present invention has improved the automaticity of equipment control, reduce operations staff's manipulation strength, program operation is more reliable, has avoided the fire grate causing because of mechanical bite to rest on for a long time original position, is conducive to improve incineration treatment of garbage effect.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, can be implemented, but illustrated embodiment is not as a limitation of the invention so that those skilled in the art can better understand the present invention also.
The present invention discloses a kind of anti-seemingly-dead control method of stocker control system, comprises the steps:
Step 1: described DCS control module is set guard time, this guard time according to fire grate advance, fire grate retreats two kinds of processes and is set with respectively the guard time that advances, retreats guard time; This guard time can be set arbitrarily, but in order to reach actual protection effect, under the operating mode of the normal operation of fire grate, the guard time that advances, retreats guard time and equals respectively that fire grate advances and fire grate has retreated the maximum time of stroke separately. Meanwhile because fire grate while advancing oil cylinder want pressure-bearing, fire grate run duration is relatively slow, and fire grate while retreating oil cylinder want pressure release, fire grate run duration is relatively very fast, the guard time that therefore advances is generally greater than and retreats guard time.
Step 2: DCS control module control fire grate starts forward stroke, meanwhile, this this guard time that advances of DCS control module control starts countdown;
Before advancing guard time zero clearing at this, (comprise when advancing guard time zero clearing), fire grate runs to foremost, detect components and parts and detect that fire grate forward stroke completes, send forward stroke to DCS control module and complete detection signal, DCS control module control fire grate commutation, the guard time that simultaneously makes to advance resets;
After advancing guard time zero clearing at this, when fire grate generation bite, can not run to setting forward stroke, when fire grate does not run to foremost, cannot detect that fire grate forward stroke completes by detecting components and parts, DCS control module only can recognize the guard time zero clearing of advancing, and fail to detect that forward stroke completes detection signal, the guard time that advances of this setting comes into force and has meaning, can pass through DCS control module control alarm equipment alarm, can send light and sound shows, prompting manipulation personnel check fire grate bite situation, solve a problem promptly. meanwhile, by DCS control module control fire grate commutation, and the guard time that makes to advance resets, but not fire grate under regular situation is repeatedly in the friction of bite position, waste burning time.
Step 3: DCS control module control fire grate starts backward travel, meanwhile, this retreats this DCS control module control guard time and starts countdown;
Before retreating guard time zero clearing at this, (comprise when retreating guard time zero clearing), fire grate runs to least significant end, detect components and parts and detect that fire grate backward travel completes, send backward travel to DCS control module and complete detection signal, DCS control module control fire grate commutation, makes to retreat guard time simultaneously and resets;
After retreating guard time zero clearing at this, when fire grate generation bite, can not run to setting backward travel, when fire grate does not run to least significant end, cannot detect that fire grate backward travel completes by detecting components and parts, DCS control module only can recognize and retreat guard time zero clearing, and fail to detect that backward travel completes detection signal, the guard time that retreats of this setting comes into force and has meaning, can pass through DCS control module control alarm equipment alarm, can send light and sound shows, prompting manipulation personnel check fire grate bite situation, solve a problem promptly. meanwhile, by DCS control module control fire grate commutation, and make to retreat guard time and reset, but not fire grate under regular situation is repeatedly in the friction of bite position, waste burning time.
Step 4: operating procedure two and step 3 repeatedly, until the rubbish in fire grate CIU is all effectively burned, completes and burn operation overall process.
By the anti-seemingly-dead control method of fire grate provided by the invention; can effectively burn away the refuse; avoiding in burning process fire grate to be stuck in a certain position pushes repeatedly; until the component of bite fire grate or be crushed out of shape; or extruded by fire grate, and the waste burning time can make fire grate backhaul effectively; can be good at protecting fire grate, the infringement of avoiding extrusion friction to cause fire grate simultaneously.
In the present invention; when passing through certain a fire grate prospect stroke or backward travel; find foremost or when the least significant end is nearer of bite positional distance fire grate of fire grate; be that fire grate stroke limiting is more; avoid fire grate occurring after bite early; also at advance guard time or retreat guard time zero clearing of wait; and the waste plenty of time is in wait state; we can suitably shorten the guard time or retreat guard time of advancing of fire grate this situation; make fire grate backhaul as soon as possible; so that increase running frequency, improves squeezing effect.
The present invention also provides a kind of anti-seemingly-dead control device of stocker control system, same as the prior art, comprises DCS control module, and this DCS control module comprises stocker control unit, and this stocker control unit connects and controls fire grate. Difference with the prior art of the present invention is, the present invention also comprises timing unit, connects DCS control module, and also comprises further alarm, and this alarm connects DCS control module, and this alarm can be audible and visible alarm device. In the present invention, DCS control module adopts the DCS control module in existing stocker control system; its difference with the prior art is only that it also connects a protection control loop; operating personnel are the timing unit of setting-up time manually; in the time that stocker control unit sends advancement commands; triggering timing unit starts timing; after the time timing of the manual setting of timing unit finishes, timing unit sends a timing unit switching value control signal. Stocker control unit makes a decision this timing unit switching value control signal and approach switch switching value signal: if setting-up time not yet timing finish, timing unit not yet sends timing unit switching value control signal, approach switch switching value signal is received in stocker control unit, is as the criterion with approach switch switching value signal; As do not receive approach switch switching value signal, the timing unit switching value control signal that stocker control unit sends with timing unit is as the criterion, and triggers fire grate circulation. Stocker control unit sends after commutation instruction, and timing unit automatic clear, newly starts counting again. Specifically approach switch switching value signal or timing unit switching value signal that stocker control unit judges first receives are to judge with "or" program. Described timing unit comprises the countdown unit and retreat countdown unit of advancing, and is count-down device, connects respectively the stocker control unit of DCS control module.
The above embodiment is only the preferred embodiment for absolutely proving that the present invention lifts, and protection scope of the present invention is not limited to this. What those skilled in the art did on basis of the present invention is equal to alternative or conversion, all within protection scope of the present invention. Protection scope of the present invention is as the criterion with claims.
Claims (8)
1. an anti-seemingly-dead control method for stocker control system, is characterized in that, comprises the steps:
Step 1: set guard time by DCS control module, this guard time according to fire grate advance, fire grate retreats two kinds of processes and is set with respectively the guard time that advances, retreats guard time;
Step 2: DCS control module control fire grate starts forward stroke, meanwhile, this this guard time that advances of DCS control module control starts countdown;
Before advancing guard time zero clearing at this or when zero clearing, fire grate runs to foremost, detects components and parts and detects that fire grate forward stroke completes, and sends forward stroke to DCS control module and completes detection signal, DCS control module control fire grate commutation, the guard time that simultaneously makes to advance resets;
After advancing guard time zero clearing at this, fire grate off-duty arrives foremost, cannot detect that fire grate forward stroke completes by detecting components and parts, DCS control module only can recognize the guard time zero clearing of advancing, and fail to detect that forward stroke completes detection signal, by DCS control module control alarm equipment alarm, simultaneously by the commutation of DCS control module control fire grate, and the guard time that makes to advance resets;
Step 3: DCS control module control fire grate starts backward travel, meanwhile, this retreats this DCS control module control guard time and starts countdown;
Before retreating guard time zero clearing at this or when zero clearing, fire grate runs to least significant end, detects components and parts and detects that fire grate backward travel completes, and sends backward travel to DCS control module and completes detection signal, DCS control module control fire grate commutation, makes to retreat guard time simultaneously and resets;
After retreating guard time zero clearing at this, fire grate off-duty is to least significant end, cannot detect that fire grate backward travel completes by detecting components and parts, DCS control module only can recognize and retreat guard time zero clearing, and fail to detect that backward travel completes detection signal, by DCS control module control alarm equipment alarm, simultaneously by the commutation of DCS control module control fire grate, and make to retreat guard time reset;
Step 4: operating procedure two and step 3 repeatedly, until the rubbish in fire grate CIU is all effectively burned, completes and burn operation overall process.
2. the anti-seemingly-dead control method of a kind of stocker control system according to claim 1, is characterized in that, described in advance guard time, retreat guard time and equal respectively that fire grate advances and fire grate has retreated the maximum time of stroke separately.
3. the anti-seemingly-dead control method of a kind of stocker control system according to claim 1, is characterized in that, described alarm is acoustic-optic alarm.
4. the anti-seemingly-dead control method of a kind of stocker control system according to claim 1, is characterized in that, described detection components and parts are approach switch.
5. the anti-seemingly-dead control device of a stocker control system, comprise DCS control module, described DCS control module comprises stocker control unit, described stocker control unit connects and controls fire grate, and stocker control unit connects approach switch, it is characterized in that, also comprise timing unit, described timing unit connects this stocker control unit.
6. the anti-seemingly-dead control device of stocker control system according to claim 5, is characterized in that, described timing unit comprises the countdown unit and retreat countdown unit of advancing, and connects respectively stocker control unit.
7. the anti-seemingly-dead control device of stocker control system according to claim 5, is characterized in that, also comprises alarm, and described alarm connects DCS control module.
8. the anti-seemingly-dead control device of stocker control system according to claim 5, is characterized in that, described alarm is audible and visible alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068040.9A CN105674296B (en) | 2016-02-01 | 2016-02-01 | The anti-seemingly-dead control method of stocker control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068040.9A CN105674296B (en) | 2016-02-01 | 2016-02-01 | The anti-seemingly-dead control method of stocker control system |
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| CN105674296A true CN105674296A (en) | 2016-06-15 |
| CN105674296B CN105674296B (en) | 2017-10-24 |
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|---|---|---|---|---|
| GB403216A (en) * | 1932-11-22 | 1933-12-21 | Emil May Franz Schenk | Improvements relating to travelling furnace-grates |
| CN86206951U (en) * | 1986-09-12 | 1987-09-02 | 庞忠 | Intermitent electric driving device |
| CN2103738U (en) * | 1991-04-06 | 1992-05-06 | 温州市烟尘净化设计研究所 | Time controlled two-step automatic coal charger |
| CN101660757A (en) * | 2008-12-09 | 2010-03-03 | 浙江中控技术股份有限公司 | Method and device for fire grate control for fire grate type garbage incinerator |
| CN104110686A (en) * | 2014-07-04 | 2014-10-22 | 光大环保（中国）有限公司 | Control system and method for feeding protection of feeding grate |
| CN204648263U (en) * | 2015-06-01 | 2015-09-16 | 南通天蓝环保能源成套设备有限公司 | A kind of control system of incinerator reciprocating combustion fire grate |
-
2016
- 2016-02-01 CN CN201610068040.9A patent/CN105674296B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB403216A (en) * | 1932-11-22 | 1933-12-21 | Emil May Franz Schenk | Improvements relating to travelling furnace-grates |
| CN86206951U (en) * | 1986-09-12 | 1987-09-02 | 庞忠 | Intermitent electric driving device |
| CN2103738U (en) * | 1991-04-06 | 1992-05-06 | 温州市烟尘净化设计研究所 | Time controlled two-step automatic coal charger |
| CN101660757A (en) * | 2008-12-09 | 2010-03-03 | 浙江中控技术股份有限公司 | Method and device for fire grate control for fire grate type garbage incinerator |
| CN104110686A (en) * | 2014-07-04 | 2014-10-22 | 光大环保（中国）有限公司 | Control system and method for feeding protection of feeding grate |
| CN204648263U (en) * | 2015-06-01 | 2015-09-16 | 南通天蓝环保能源成套设备有限公司 | A kind of control system of incinerator reciprocating combustion fire grate |
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| Publication number | Publication date |
|---|---|
| CN105674296B (en) | 2017-10-24 |
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