CN102840585B - Three-driving inverse push type incinerator grate and feeding device control method, device and system - Google Patents
Three-driving inverse push type incinerator grate and feeding device control method, device and system Download PDFInfo
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- CN102840585B CN102840585B CN201210334109.XA CN201210334109A CN102840585B CN 102840585 B CN102840585 B CN 102840585B CN 201210334109 A CN201210334109 A CN 201210334109A CN 102840585 B CN102840585 B CN 102840585B
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Abstract
The embodiment of the invention discloses a three-driving inverse push type incinerator grate and feeding device control method, a device and a system. The method comprises the following steps: utilizing an analog input module and a switching value input module to acquire and process operation state data related to controlled equipment corresponding to three sections of grates and/or a feeding sliding plate, and generating operation status data flow; inputting the operation status data flow to a DCS (Distributed Control System) control unit through a field bus and processing; outputting a control analog quantity through a control output module related to the controlled equipment corresponding to the three sections of grates and/or the feeding sliding plate according to the processing result of the DCS control unit; and outputting a control switching value through a switching value output module arranged corresponding to a hopper locking device, a hopper broken bridge device, a hopper door and a slag discharge device. The three-driving inverse push type incinerator grate and feeding device control method overcomes the technical defects of fault search, troubleshooting and high maintenance difficulty brought by communication failure between PLC (Programmable Logic Controller) control equipment and DCS control equipment.
Description
Technical field
The present invention relates to waste incineration control technology field, more particularly, relate to a kind of three and drive inverse-push incineration furnace grate and pay-off control method, device and system.
Background technology
Waste incineration and generating electricity is after house refuse being carried out burning and process, the emerging forms of electricity generation of the generating equipments such as driving steam turbine, described waste incineration and generating electricity reduces urban refuse pollution with it, is re-used and can bear certain urban power consumption and progressively be promoted by discarded object.Existing garbage incinerating power plant many employings incinerator carries out waste incineration, and with feeding slide plate supply rubbish, the control method improving rational incinerator control strategy and feeding slide plate and fire grate is the guarantee realizing high-efficiency refuse burning electricity generation.
Incinerator three drives inverse-push fire grate to be the version that garbage incinerating power plant is conventional, its structure comprises: gradient is the fire grate of about 25 °, fire grate is made up of two row fire grate segments, be divided into dryer section, burning zone and burning segment, three sections of fire grates include fixed grate film and movable fire grate segment, spaced arrangement.The backstepping motion of movable fire grate segment controls fire grate speed by a pair hydraulic driving oil cylinder, when movable fire grate segment reverse movement, under hydraulic driving oil cylinder controls fire grate speed, the feeding operation of feeding slide plate and the air quantity cooperation of frequency control blower fan, rubbish is utilized to rely on the Action of Gravity Field of self, continuous upset, stirring, fragmentation, drying, burning, and move forward.The existing control for incineration furnace grate and rubbish feeding slide plate realizes with PLC control form, and the rubbish namely in garbage pool after fermentation is picked up by grab bucket, delivers to above the hopper of stokehold, then drops among hopper; In the hopper of feed hopper bottom, the speed that the feeding slide plate that rubbish is controlled by hydraulic driving oil cylinder sets according to PLC is moved into burner hearth; Enter the house refuse after burner hearth, on fire grate under PLC control appliance controls, the control rate specified according to PLC control appliance moves back and forth, and carries out mixing, stirring with the high-temperature hot air (First air) entered bottom fire grate, makes rubbish be able to drying, igniting, burning so that burn.
But, the form that above-mentioned PLC controls, three drive inverse-push incineration furnace grate and feeding slide plate to need other equipment based on DCS technology with garbage incinerating power plant, as main steam pressure, flow-control equipment, Main Steam Temperature Control equipment, the Water Level Control of Steam equipment, Primary air flow control equipment and secondary air flow (regulating burner hearth flue gas oxygen content) control appliance, furnace pressure control appliance etc. carries out communication cooperation and equipment coordinates, carry out above-mentioned burning process, when there is the communication failure between PLC control appliance and DCS control appliance, need to carry out breakdown judge to DCS control appliance and PLC control appliance respectively, cause adding fault search at the existing described incinerator driving inverse-push to control fire grate and feeding slide plate with PLC form three, the difficulty of investigation and maintenance.
Summary of the invention
In view of this, the invention provides a kind of three and drive inverse-push incineration furnace grate and pay-off control method, device and systems, to realize the control form utilizing DCS technology, reduce the difficulty of fault search when there is communication failure, investigation and maintenance.
A kind of three drive inverse-push incineration furnace grate and pay-off control method, comprising:
Utilize Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and process, generating run status data stream;
Described running state data is flowed through fieldbus to input to DCS control unit and process;
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
In order to improve such scheme:
Described running state data comprises: the fire box temperature analog quantity of incinerator and the furnace pressure analog quantity of incinerator, main steam pressure analog quantity, rubbish thickness mode analog quantity, delivery rate analog quantity, fire grate speed analog quantity, main steam flow analog quantity, Primary air flow control amount and secondary air flow controlled quentity controlled variable analog quantity;
And hopper buckling and locking device, hopper break the switching value of Biodge device, hopper door and deslagging device.
In order to improve such scheme:
When described running state data is specially for the main steam pressure of waste incineration outlet of still or fire box temperature analog quantity:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for feeding skateboarding speed, and described feeding slide plate comprises left feeding slide plate, middle feeding slide plate and right feeding slide plate:
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value or fire box temperature analog quantity lower than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value or fire box temperature analog quantity higher than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
In order to improve such scheme: described control method also comprises:
When described running state data is specially for the refuse thermal value of dry fire grate and moisture value:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for feeding slide plate, and described feeding slide plate comprises left feeding slide plate, middle feeding slide plate and right feeding slide plate:
When the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
In order to improve such scheme: described control method also comprises:
According to the main steam pressure for waste incineration outlet of still gathered or fire box temperature analog quantity, in described DCS control unit, judge the main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
When described main steam pressure or fire box temperature variation tendency are for rising, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening;
When described main steam pressure or fire box temperature variation tendency are for declining, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
In order to improve such scheme:
When described running state data is specially for the refuse thermal value of dry fire grate and moisture value:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for drying oven row's movement velocity and primary air fan air quantity, and described drying oven package is drawn together: the dry fire grate of left column and the dry fire grate of right row;
When the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
In order to improve such scheme: described control method also comprises:
When in the burner hearth that described running state data is specially for dry fire grate during ignition point position:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for dry fire grate:
Lag behind default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
In order to improve such scheme:
When described running state data is specially for incinerator outlet main steam pressure and burning zone fire box temperature:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for combustion grate movement velocity and primary air fan air quantity, and described combustion grate comprises: left column combustion grate and right row combustion grate;
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value and/or fire box temperature lower than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value and/or fire box temperature higher than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
In order to improve such scheme:
When described running state data is specially for the burning of burn-out grate:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for burn-out grate, and described burn-out grate comprises: left column burn-out grate and right row burn-out grate;
Burning a position when the process of DCS control unit obtains burning a position lag in presetting, exporting by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of to preset burn a position when the process of DCS control unit obtains burning a position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
A kind of three drive inverse-push incineration furnace grate and pay-off control device, comprising:
Collecting device, for utilizing Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and processing, generating run status data stream;
DCS control unit, flows through fieldbus and inputs to DCS control unit and process by described running state data;
Controlled quentity controlled variable output module, correspondingly with the controlled plant of described fire grate and feeding slide plate to arrange, for the result according to DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
In order to improve such scheme: described control device also comprises:
For the synchronizing control loop that three sections of fire grates and/or controlled plant corresponding to feeding slide plate are arranged.
In order to improve such scheme:
Described DCS control unit also comprises: Trend judgement module, for:
According to the main steam pressure for waste incineration outlet of still gathered or fire box temperature analog quantity, in described DCS control unit, judge the main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
When described main steam pressure or fire box temperature variation tendency are for rising, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening;
When described main steam pressure or fire box temperature variation tendency are for declining, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
A kind of three drive inverse-push incineration furnace grate and pay-off control system, comprising: above-mentioned three drive inverse-push incineration furnace grate and pay-off control device.
As can be seen from above-mentioned technical scheme, in the embodiment of the present invention three drives inverse-push incineration furnace grate and pay-off control method, device and system are based on DCS technology, input in DCS control unit after gathering fire grate and feeding slide plate analog quantity and switching value and process, and controlled quentity controlled variable output module associated by three sections of fire grates and/or feeding slide plate exports control simulation amount and to hopper buckling and locking device, hopper breaks Biodge device, hopper door and deslagging device are by the corresponding switching value output module output control switch amount arranged, because the control method of described three sections of fire grates and feeding slide plate is based on DCS treatment technology, can with other equipment based on DCS technology of garbage burning factory carry out based on DCS technology communication and process the mutual of data, define three driving inverse-push incinerator power plant DCS overall-in-one control schema modes, the fault search brought when overcoming in prior art the communication failure occurred between PLC control appliance and DCS control appliance, investigation and the high technological deficiency of maintenance difficulty.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, by in those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the embodiment of the present invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control method flow chart;
Fig. 2 is that further embodiment of this invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control method flow chart;
Fig. 3 is that further embodiment of this invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control flow chart;
Fig. 4 is that further embodiment of this invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control flow chart;
Fig. 5 is that further embodiment of this invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control flow chart;
Fig. 6 is that the embodiment of the present invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control device structural representation;
Fig. 7 is that further embodiment of this invention disclosed a kind of three drives inverse-push incineration furnace grate and pay-off control device structural representation;
Fig. 8 is for driving inverse-push incineration furnace grate and pay-off Control system architecture schematic diagram for the embodiment of the present invention disclosed a kind of three.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described by the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of three and drive inverse-push incineration furnace grate and pay-off control method, device and system, to realize the control form utilizing DCS technology, investigation during reduction generation communication failure and the difficulty of maintenance.
Fig. 1 shows a kind of three and drives inverse-push incineration furnace grate and pay-off control method, comprising:
S101: utilize Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and process, generating run status data stream;
Described running state data comprises: the fire box temperature analog quantity of incinerator and the furnace pressure analog quantity of incinerator, main steam pressure analog quantity, rubbish thickness mode analog quantity, delivery rate analog quantity, fire grate speed analog quantity, main steam flow analog quantity, Primary air flow control amount and secondary air flow controlled quentity controlled variable analog quantity;
And hopper buckling and locking device, hopper break the switching value of Biodge device, hopper door and deslagging device;
The formation of described data flow is interpreted as described DCS control unit and receives result from each Analog input mModule and switching input module, and the data of the collection of Analog input mModule and switching input module have multiple and constantly carry out gathering, processing and be uploaded in described DCS control unit.
Described Analog input mModule collection the analog quantity processed in above-mentioned running state data, described switching input module collection the digital quantity processed in above-mentioned running state data.Above-mentioned running state data not all are enumerated, only just can directly regulate and control for above-mentioned running state data, namely above-mentioned running state data is that the direct regulation and control running state data of following controlled plant operational factor is illustrated, certainly be not limited thereto, also obtain other parameters by carrying out COMPREHENSIVE CALCULATING according to the some running state data gathered in this manual, and realize the embodiment based on DCS control for controlled plant corresponding in fire grate and feeding slide plate.
Described running state data stream is the real-time running state data of supply DCS control unit identification and parsing, to realize treatment effect rapidly.
S102: described running state data is flowed through fieldbus and input to DCS control unit and process;
The running state data stream that fieldbus transmission comes by described DCS control unit pin, respectively running state data is resolved according to predetermined software program, identify and calculate, not only the parameter after identification and preset value are compared, export final control simulation amount, and the middle parameter obtained after calculating some and default parameter compare, and obtain final control simulation amount.
S103: according to the result of DCS control unit, exports control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
It should be noted that:
Described control simulation amount is exported by the controlled quentity controlled variable output module of correspondence, is received and the corresponding operational factor of response limiting by the controlled plant of three sections of fire grates and/or feeding slide plate.
Above-mentioned hopper buckling and locking device, plays kayser effect to broken Biodge device.The DCS system that the present embodiment is corresponding adopts thyristor regulator strategy, provides an output switch parameter passage, realizes digital output modul mode.
Above-mentioned hopper breaks Biodge device, is that when running, rubbish enters hopper anticlogging device later.DCS system adopts thyristor regulator strategy, provides two output switch parameter passages (DO), realizes digital output modul mode.
Above-mentioned hopper door, the hermatic door of hopper during incinerator start and stop, DCS system adopts thyristor regulator strategy, provides two output switch parameter passages (DO), realizes digital output modul.
Above-mentioned deslagging device, uses for burner hearth bottom regular cinder-discharge.DCS system adopts thyristor regulator strategy, provides two output switch parameter passages (DO), arranges timing loop, realize timing controlled mode.
In the present embodiment three drives inverse-push incineration furnace grate and pay-off control method can carry out the mutual of DCS result with other equipment based on DCS technology of garbage burning factory and can to the direct control of corresponding device, overcome in prior art needs when there is communication failure to overhaul DCS control appliance and PLC control appliance and adjust respectively, and increase the technological deficiency of the difficulty of malfunction elimination and maintenance.
Fig. 2 shows another three driving inverse-push incineration furnace grate and pay-off control method, comprising:
S201: utilize Analog input mModule collection and process for the main steam pressure of waste incineration outlet of still or fire box temperature analog quantity time, form the data flow of main steam pressure or fire box temperature analog quantity:
Described feeding slide plate comprises left feeding slide plate, middle feeding slide plate and right feeding slide plate:
S202: this data flow is inputed to DCS control unit by fieldbus and processes;
The result that the process of described DCS control unit obtains is the result for feeding skateboarding speed
S203: in DCS control unit:
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value or fire box temperature analog quantity lower than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value or fire box temperature analog quantity higher than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
And, when the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
S204: judge the main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
When described main steam pressure or fire box temperature variation tendency are for rising, perform S205;
When described main steam pressure or fire box temperature variation tendency are for declining, perform S206;
The analog quantity reducing valve seat opening is exported by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate;
The analog quantity increasing valve seat opening is exported by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate.
When the main steam pressure of waste incineration outlet of still or fire box temperature are also compared with setting value, if on the rise time, the Trend judgement module arranged through DCS control unit judges, postpones after 12 minutes, just sends the feeding coal that control instruction reduces its rubbish; Otherwise, if the main steam pressure of waste incineration outlet of still or fire box temperature are compared with setting value, if when having downward trend, through Trend judgement module, postpone after 1-2 minute, just send control instruction to incinerator, increase the feeding coal of its rubbish; Finally make the main steam pressure of waste incineration outlet of still or fire box temperature equal again its setting value, meet the normal service requirement of incinerator.
Fig. 3 shows another three driving inverse-push incineration furnace grate and pay-off control method, comprising:
S301: utilize Analog input mModule collection and the refuse thermal value processed for dry fire grate and moisture value, and ignition point position in burner hearth, formed based on for the refuse thermal value of dry fire grate and moisture value, and the data flow of ignition point position in the burner hearth of dry fire grate;
Described drying oven package is drawn together: the dry fire grate of left column and the dry fire grate of right row;
S302: this data flow is inputed to DCS control unit by fieldbus and processes;
The result that the process of described DCS control unit obtains is the result for drying oven row's movement velocity and primary air fan air quantity, and, for the result of the movement velocity of dry fire grate;
S303: in DCS control unit:
When the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
And, lag behind default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
Usually, DCS control unit according to refuse thermal value, moisture and in burner hearth the front and back position of ignition point control the movement velocity of dry fire grate and the primary air flow of dryer section.When the calorific value of rubbish is on the low side, moisture is too high, the dry fire grate rate control module of DCS will suitably accelerate the movement velocity of dry fire grate, the rubbish of bottom is stirred fully on dry fire grate, and increase the First air air quantity of dryer section simultaneously, make rubbish under the First air baking of sufficiently high temperature, dry fire grate can obtain fully dry and inflammable; Meanwhile, the dry fire grate rate control module of DCS is also looked over one's shoulder the position of rubbish ignition point on dry fire grate.If the position of ignition point is more advanced than precalculated position, so the dry fire grate rate control module of DCS suitably reduces drying oven row movement velocity; If the position of ignition point is more delayed than precalculated position, so the dry fire grate rate control module of DCS suitably accelerates drying oven row movement velocity.
Fig. 4 shows another three driving inverse-push incineration furnace grate and pay-off control method, comprising:
S401: utilize Analog input mModule collection and the outlet main steam pressure force value processed for incinerator and fire box temperature value, form the outlet main steam pressure force value of incinerator and the data flow of fire box temperature;
Described combustion grate comprises: left column combustion grate and right row combustion grate;
S402: this data flow is inputed to DCS control unit by fieldbus and processes;
The result that the process of described DCS control unit obtains is the result for combustion grate movement velocity and primary air fan air quantity;
S403: in DCS control unit:
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value and/or fire box temperature lower than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value and/or fire box temperature higher than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
Usually, DCS control unit comes the movement velocity of control combustion fire grate and the primary air flow of burning zone according to waste incineration outlet of still main steam pressure and fire box temperature.When waste incineration outlet of still main steam pressure is on the low side, DCS control unit suitably can accelerate the movement velocity of combustion grate, and suitably strengthen the primary air flow of burning zone in proportion simultaneously, rubbish is fully burned at burning zone, release amount of heat, thus cause waste incineration outlet of still main steam pressure to raise.Otherwise when waste incineration outlet of still main steam pressure is higher, DCS control unit suitably can reduce the movement velocity of combustion grate; And suitably reducing the primary air flow of burning zone in proportion simultaneously, the heat that rubbish is discharged at burning zone reduces, thus causes waste incineration outlet of still main steam pressure to decline.
Must be pointed out, if if the fire box temperature of incinerator (such as 850--1050 ° of C) in normal range (NR), combustion grate does not need the impact considering fire box temperature.If when fire box temperature is on the low side (such as close to 850 ° of C), the combustion grate rate control module so based on DCS control technology DCS also will suitably accelerate the movement velocity of combustion grate; And suitably strengthen the primary air flow of burning zone in proportion simultaneously, thus cause rubbish Thorough combustion, release heat, improve fire box temperature.Otherwise, if time the combustion grate burner hearth of incinerator higher (such as close to 1050 ° of C), the combustion grate rate control module based on DCS control technology also will suitably reduce the movement velocity of combustion grate; And suitably reduce the primary air flow of burning zone in proportion, thus the heat discharged when causing incineration firing reduces, and reduces fire box temperature simultaneously.
Fig. 5 shows another three driving inverse-push incineration furnace grate and pay-off control method, comprising:
S501: utilize Analog input mModule collection and process for the burning of burn-out grate time, formed based on the data flow burnt a little for burn-out grate;
S502: this data flow is inputed to DCS control unit by fieldbus and processes;
The result that the process of described DCS control unit obtains is the result of the movement velocity for burn-out grate;
S503: in DCS control unit:
Burning a position when the process of DCS control unit obtains burning a position lag in presetting, exporting by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of to preset burn a position when the process of DCS control unit obtains burning a position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
Fig. 6 shows a kind of three and drives inverse-push incineration furnace grate and pay-off control device, comprising:
Collecting device 1, for utilizing Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and processing, generating run status data stream;
DCS control unit 2, flows through fieldbus and inputs to DCS control unit and process by described running state data;
Controlled quentity controlled variable output module 3, correspondingly with the controlled plant of described fire grate and feeding slide plate to arrange, for the result according to DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
It should be noted that:
The Analog input mModule measuring the fire box temperature analog quantity of described incinerator is specially thermocouple signal input module, this thermocouple signal input module improves existing based in the stocker control body of PLC technology, by temperature transmitter, fire box temperature signal is converted to analog input signal and enters the complicated processes processed in PLC again.
Measuring the device that described incinerator burn-out grate burns a position is infrared detecting set.
Can be clear that by this embodiment, when driving inverse-push incinerator three sections of fire grates and/or feeding slide plate to carry out DCS control for three, need to coordinate with some parameter of garbage burning factory other system (boiler circuit and combustion system), with suitable solution demand, reach DCS and control integrated effect, thus when there is communication failure, can carry out investigating and keeping in repair from DCS fault angle, overcome other technological deficiency of DCS control appliance and PLC control appliance being carried out to malfunction elimination, maintenance and adjustment in prior art.
Fig. 7 shows a kind of three and drives inverse-push incineration furnace grate and pay-off control device, comprising:
Except Fig. 6 diagram and the corresponding control device illustrated thereof, described DCS control unit also comprises: the Trend judgement module 21 judging main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
According to the main steam pressure for waste incineration outlet of still gathered or fire box temperature analog quantity, in described DCS control unit, judge main steam pressure or the fire box temperature variation tendency of waste incineration outlet of still;
When described main steam pressure or fire box temperature variation tendency are for rising, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening;
When described main steam pressure or fire box temperature variation tendency are for declining, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
And, for the synchronizing control loop 22 that three sections of fire grates and/or controlled plant corresponding to feeding slide plate are arranged.
Can be used as embodiment to carry out enumerating, be provided with the synchronizing control loop of left, center, right feeding slide plate, guarantee left, center, right feeding skateboarding synchronous operation etc.
Certainly, the control module of the controlled plant operational factor of fire grate described in relative set and feeding slide plate can be distinguished in described DCS control unit, control embodiment for operational factor illustrates see Fig. 2-5 diagram and correspondence thereof, corresponding control module repeats no more and diagram, does not do careful division and enumerates.
Fig. 8 shows a kind of three and drives inverse-push incineration furnace grate and pay-off control system, and Fig. 6-7 illustrates and three in corresponding explanation drives inverse-push incineration furnace grate and pay-off control device.
This control system contains DCS operator station 4, the resume module result that the process of described DCS controller obtains is carried out showing, records and the platform of human intervention operation.Also show the DCS operator station 5 with described DCS operator station redundancy each other, described redundancy DCS operator station in figure, ensure that and drop into DCS operator station for subsequent use immediately, the normal operation of Guarantee control system when occurring that main DCS operator station breaks down.
In sum:
In the embodiment of the present invention three drives inverse-push incineration furnace grate and pay-off control method, device and system are based on DCS technology, input in DCS control unit after gathering fire grate and feeding slide plate analog quantity and switching value and process, and controlled quentity controlled variable output module associated by three sections of fire grates and/or feeding slide plate exports control simulation amount and to hopper buckling and locking device, hopper breaks Biodge device, hopper door and deslagging device are by the corresponding switching value output module output control switch amount arranged, because the control method of described three sections of fire grates and feeding slide plate is based on DCS treatment technology, can with other equipment based on DCS technology of garbage burning factory carry out based on DCS technology communication and process the mutual of data, define three driving inverse-push incinerator power plant DCS overall-in-one control schema modes, the fault search brought when overcoming in prior art the communication failure occurred between PLC control appliance and DCS control appliance, investigation and the high technological deficiency of maintenance difficulty.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment and system, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments.Therefore, the embodiment of the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. three drive inverse-push incineration furnace grate and a pay-off control method, it is characterized in that, comprising:
Utilize Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and process, generating run status data stream, wherein, described running state data comprises: the fire box temperature analog quantity of incinerator and the furnace pressure analog quantity of incinerator, main steam pressure analog quantity, rubbish thickness mode analog quantity, delivery rate analog quantity, fire grate speed analog quantity, main steam flow analog quantity, Primary air flow control amount and secondary air flow controlled quentity controlled variable analog quantity; And hopper buckling and locking device, hopper break the switching value of Biodge device, hopper door and deslagging device;
Described running state data is flowed through fieldbus to input to DCS control unit and process;
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
2. control method as claimed in claim 1, is characterized in that, comprising:
When described running state data is specially for the main steam pressure of waste incineration outlet of still or fire box temperature analog quantity:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for feeding skateboarding speed, and described feeding slide plate comprises left feeding slide plate, middle feeding slide plate and right feeding slide plate:
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value or fire box temperature analog quantity lower than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value or fire box temperature analog quantity higher than default fire box temperature analog quantity time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
3. control method as claimed in claim 1, is characterized in that, also comprise:
When described running state data is specially for the refuse thermal value of dry fire grate and moisture value:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for feeding slide plate, and described feeding slide plate comprises left feeding slide plate, middle feeding slide plate and right feeding slide plate:
When the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening;
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening.
4. control method as claimed in claim 2, is characterized in that, also comprise:
According to the main steam pressure for waste incineration outlet of still gathered or fire box temperature analog quantity, in described DCS control unit, judge the main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
When described main steam pressure or fire box temperature variation tendency are for rising, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening;
When described main steam pressure or fire box temperature variation tendency are for declining, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
5. control method as claimed in claim 1, is characterized in that, comprising: when described running state data is specially for the refuse thermal value of dry fire grate and moisture value:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for drying oven row's movement velocity and primary air fan air quantity, and described drying oven package is drawn together: the dry fire grate of left column and the dry fire grate of right row;
When the process of DCS control unit obtain refuse thermal value lower than default refuse thermal value and/or moisture value higher than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain refuse thermal value higher than default refuse thermal value and/or moisture value lower than pre-set moisture value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
6. the control method as described in claim 1 or 2 any one claim, is characterized in that, also comprise: when in the burner hearth that described running state data is specially for dry fire grate during ignition point position:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for dry fire grate:
Lag behind default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of default ignition point position when the process of DCS control unit obtains ignition point position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
7. control method as claimed in claim 1, is characterized in that, comprising: when described running state data is specially for incinerator outlet main steam pressure and burning zone fire box temperature:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result for combustion grate movement velocity and primary air fan air quantity, and described combustion grate comprises: left column combustion grate and right row combustion grate;
When the process of DCS control unit obtain main steam pressure lower than default main steam pressure force value and/or fire box temperature lower than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity increasing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity increasing First air air quantity;
When the process of DCS control unit obtain main steam pressure higher than default main steam pressure force value and/or fire box temperature higher than preset temperature value time, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by combustion grate the analog quantity reducing valve seat opening, and the Boiler pressure control amount output module associated by primary air fan is exported to the analog quantity reducing First air air quantity.
8. control method as claimed in claim 1, is characterized in that, comprising: when described running state data is specially for the burning of burn-out grate:
According to the result of DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate, be specially:
The result that the process of described DCS control unit obtains is the result of the movement velocity for burn-out grate, and described burn-out grate comprises: left column burn-out grate and right row burn-out grate;
Burning a position when the process of DCS control unit obtains burning a position lag in presetting, exporting by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity increasing valve seat opening;
Be ahead of to preset burn a position when the process of DCS control unit obtains burning a position, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by dry fire grate the analog quantity reducing valve seat opening.
9. three drive inverse-push incineration furnace grate and a pay-off control device, it is characterized in that, comprising:
Collecting device, for utilizing Analog input mModule and switching input module for the running state data collection of three sections of fire grates and/or controlled plant association corresponding to feeding slide plate and processing, generating run status data stream, wherein, described running state data comprises: the fire box temperature analog quantity of incinerator and the furnace pressure analog quantity of incinerator, main steam pressure analog quantity, rubbish thickness mode analog quantity, delivery rate analog quantity, fire grate speed analog quantity, main steam flow analog quantity, Primary air flow control amount and secondary air flow controlled quentity controlled variable analog quantity; And hopper buckling and locking device, hopper break the switching value of Biodge device, hopper door and deslagging device;
DCS control unit, flows through fieldbus and inputs to DCS control unit and process by described running state data;
Controlled quentity controlled variable output module, correspondingly with the controlled plant of described fire grate and feeding slide plate to arrange, for the result according to DCS control unit, export control simulation amount by the controlled quentity controlled variable output module associated by three sections of fire grates and/or controlled plant corresponding to feeding slide plate;
According to the result of DCS control unit, broken the switching value output module output control switch amount of Biodge device, hopper door and deslagging device correspondence setting by hopper buckling and locking device, hopper.
10. control device as claimed in claim 9, is characterized in that, also comprise:
For the synchronizing control loop that three sections of fire grates and/or controlled plant corresponding to feeding slide plate are arranged.
11. control device as claimed in claim 9, it is characterized in that, described DCS control unit also comprises: Trend judgement module, for:
According to the main steam pressure for waste incineration outlet of still gathered or fire box temperature analog quantity, in described DCS control unit, judge the main steam pressure for waste incineration outlet of still or fire box temperature variation tendency;
When described main steam pressure or fire box temperature variation tendency are for rising, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity reducing valve seat opening;
When described main steam pressure or fire box temperature variation tendency are for declining, export by the ratio adjusting valve controlled quentity controlled variable output module of the hydraulic driving oil cylinder associated by the skateboarding of feeding slide plate the analog quantity increasing valve seat opening.
12. a kind three drives inverse-push incineration furnace grate and pay-off control system, it is characterized in that, comprising: three described in claim 9-11 any one claim drives inverse-push incineration furnace grate and pay-off control device.
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| CN110762534A (en) * | 2019-12-05 | 2020-02-07 | 福建华电永安发电有限公司 | Solid waste and biomass direct-combustion coupling utilization system and process |
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| JP2003058207A (en) * | 2001-08-20 | 2003-02-28 | Ebara Corp | Sharing and managing system for data for dcs, control method therefor and data conversion method among various kinds of data for plant control using dcs |
| JP3916450B2 (en) * | 2001-11-22 | 2007-05-16 | 日立造船株式会社 | Combustion control method and apparatus for refuse incinerator |
| CN1515823A (en) * | 2003-01-10 | 2004-07-28 | 深圳市市政环卫综合处理厂 | Combustion process control method for domestic refuse incinerator |
| CN101476731A (en) * | 2008-12-31 | 2009-07-08 | 华南理工大学 | Refuse incineration control method based on refuse thermal value soft measurement |
| CN101788809B (en) * | 2009-08-17 | 2013-03-06 | 杭州和利时自动化有限公司 | Coordinated control system (CCS) of large-size circulating fluidized bed boiler (CFBB) unit |
| CN102644926A (en) * | 2011-02-21 | 2012-08-22 | 上海电气自动化设计研究所有限公司 | Loop control method of medical garbage combustion rotary kiln based on DCS (Distributed Control System) |
| CN202018027U (en) * | 2011-04-20 | 2011-10-26 | 天津市光彩自控工程有限公司 | Automatic control system for full-automatic coal burning boiler |
| CN202074529U (en) * | 2011-05-25 | 2011-12-14 | 天津中能电力工程有限公司 | Anti-coking palm-waste burning furnace |
| CN202902291U (en) * | 2012-09-11 | 2013-04-24 | 绿色动力环保集团股份有限公司 | Device and system for controlling three-driving inverse push type incinerator grate and feeding device |
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