CN110145745B - Multi-drive reverse-push type garbage incinerator ACC control method and system - Google Patents
Multi-drive reverse-push type garbage incinerator ACC control method and system Download PDFInfo
- Publication number
- CN110145745B CN110145745B CN201910406450.3A CN201910406450A CN110145745B CN 110145745 B CN110145745 B CN 110145745B CN 201910406450 A CN201910406450 A CN 201910406450A CN 110145745 B CN110145745 B CN 110145745B
- Authority
- CN
- China
- Prior art keywords
- control
- temperature
- material layer
- grate
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/22—Controlling thickness of fuel bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
- F23N5/206—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electrical or electromechanical means
Abstract
The invention provides a method and a system for controlling an ACC (adaptive cruise control) of a multi-drive reverse-push garbage incinerator, wherein the method for controlling the ACC of the multi-drive reverse-push garbage incinerator comprises the following steps: step S1, collecting data of the garbage incinerator; step S2, analyzing and processing the collected data to obtain control data; step S3, outputting the control data to a field device; in step S2, the thickness and the combustion position of each segment of the material layer are analyzed and processed to obtain control data on the speed and the operation. The invention controls the whole feeding amount by calculating the material layer thickness of each section of air chamber and outputting control data to control the material pushing speed; the burning position of the garbage burning fire bed is judged through temperature detection in the fire grate and on the fire grate so as to adjust the burning fire bed to be in the optimal position; a special control system is designed for the multi-drive reverse-push type garbage incinerator, and various control functions of the multi-drive reverse-push type garbage incinerator are perfected.
Description
Technical Field
The invention relates to a garbage incinerator control method, in particular to a multi-drive reverse-push type garbage incinerator ACC control method and a multi-drive reverse-push type garbage incinerator ACC control system adopting the multi-drive reverse-push type garbage incinerator ACC control method.
Background
The existing other ACC systems and DCS mainly adopt full hard wiring or full communication, which means that a Mitsubishi Martin incinerator adopts full hard wiring, the DCS monitoring content is relatively single, much information cannot be obtained, and effective and timely intervention cannot be realized under special working conditions; most domestic incinerators adopt full soft communication, only DCS monitoring content is rich, but communication interruption time is long, the incinerator cannot be normally operated, only the incinerator can be stopped, and production is influenced, which is seen from the aspects of software and hardware of data communication.
Moreover, although the control system suitable for the characteristics of the manufacturer or the designer of each large grate is matched with the manufacturer or the designer at present, the functions are different, and certain functional defects exist more or less. Such as: the local control operation function is relatively single, and the rapid processing of the problems cannot be well realized; the device has no equipment speed linearization scheme, automatic jamming fault elimination and oil path anti-impact functions; the control scheme is simple, pure logic comparison is mainly adopted to control the grate to act, and material pushing is mainly matched with the action of the grate manually; the automatic detection of a material layer is not introduced to participate in the control; the burning position of the fire bed is not introduced to participate in the control, and the hot burning rate of slag tapping cannot be controlled; the control of the smoke retention time required by the current environmental protection is not introduced; no calculation of the waste heat value is made into automatic control, and so on.
Disclosure of Invention
The invention aims to solve the technical problem that a multi-drive reverse-push type garbage incinerator ACC control method which can control the whole feeding amount by controlling the material pushing speed according to the material layer thickness and can further control the action and speed through the combustion position is needed to be provided, so that a special control system is designed for the multi-drive reverse-push type garbage incinerator, and the control function of the multi-drive reverse-push type garbage incinerator is perfected; the invention further provides a multi-drive reverse-push type garbage incinerator ACC control system adopting the multi-drive reverse-push type garbage incinerator ACC control method.
In view of the above, the present invention provides a method for controlling an ACC of a multi-drive reverse-push type garbage incinerator, comprising the steps of:
step S1, collecting data of the garbage incinerator;
step S2, analyzing and processing the collected data to obtain control data;
step S3, outputting the control data to a field device;
in step S2, the thickness and the combustion position of each segment of the material layer are analyzed and processed to obtain control data on the speed and the operation.
In a further improvement of the present invention, in step S1, the collected data of the waste incinerator includes one or more of setting parameters, measured values of multi-layer temperature of the hearth, measured values of main steam flow, measured values of drum pressure, measured values of wind pressure of the wind chamber, measured values of wind volume of the wind chamber, and measured values of temperature on the grate.
A further refinement of the invention is that said step S2 comprises the following sub-steps:
step S201, analyzing and processing the controlled deviation amount and the change rate thereof to obtain control data for automatically controlling the furnace temperature and/or the steam load;
and S202, analyzing and processing the thickness and the combustion position of each section of the material layer to obtain control data of speed and action.
The invention is further improved in that in the step S201, according to the formula
Analyzing and processing the controlled deviation value and the change rate of the furnace temperature to obtain a grate action control parameter R, wherein T is the measured temperature of the furnace chamber,
setting a real temperature measurement change rate of a hearth, setting SP as the temperature of the hearth, wherein R is 1 to start the grate to act, and R is 0 to stop the grate to act; or, according to the formula
Analyzing and processing the controlled deviation amount of the load and the change rate of the pressure of the steam pocket to obtain a grate action control parameter R, wherein Q is the actual steam load of the boiler,
is the drum pressure change rate set value, and SP' is the boiler steam load set value.
In a further improvement of the present invention, in the step S202, the formula is judged by logic
Analyzing and processing the thickness of each section of material layer to obtain a material layer thickness judgment value, wherein e is a predefined deviation set value delta PMeasuringFor actually measuring the wind resistance pressure difference, delta PCalibrationFor calibrating the wind resistance pressure difference, HH represents that the material layer thickness judgment value is thick, H represents that the material layer thickness judgment value is thick, L represents that the material layer thickness judgment value is thin, and LL represents that the material layer thickness judgment value is thin; and increasing the feeding speed with the decrease of the judging value of the thickness of the material layer.
The present invention is further improved in that, in step S202, the actual flue gas temperature measured by the temperature measuring elements arranged at the outlet of the drying section grate and at the inlet of the burnout section grate of the incinerator grate is compared with the set value of the flue gas temperature to determine the combustion position of the garbage, and when the actual flue gas temperature at the outlet of the drying section grate is higher than the set value of the flue gas temperature, the garbage is determined to be in front of combustion, a state signal indicating that the combustion position is in front is sent, and the grate speed is increased; when the actually measured flue gas temperature at the entrance of the grate of the burnout section is higher than the set value of the flue gas temperature, the situation that the combustion is close to the back is judged, a state signal that the combustion position is close to the back is sent out, and the speed of the grate is reduced.
In a further improvement of the present invention, the step S2 further includes a step S203, in which in the step S203, a primary air volume set value is introduced to a setting end of the primary air volume PID, a primary air volume measured value is subjected to multi-stage filtering and introduced to a measuring end of the primary air volume PID, and an output end of the primary air volume PID is used for controlling the primary air volume; introducing an actual measured value of oxygen quantity of the boiler into a measuring end of an oxygen quantity PID (proportion integration differentiation) through a time interval mean value, outputting an initial value of secondary air quantity by an output end of the oxygen quantity PID, introducing the initial value of the secondary air quantity into a setting end of the secondary air quantity PID after a primary air quantity matching limiting block and a flue gas retention time correction, introducing the actual measured value of the secondary air quantity into the measuring end of the secondary air quantity PID after multi-stage filtering treatment, and controlling the secondary air quantity by an output end of the secondary air quantity PID.
A further improvement of the invention is that the flue gas residence time is controlled to be above 2 seconds.
In a further improvement of the present invention, the step S2 further includes a step S204, in the step S204, when the furnace temperature is greater than the first preset temperature and less than the second preset temperature, the fuel pump is started; and when the temperature of the hearth is lower than a first preset temperature, starting the burner.
The invention also provides a multi-drive reverse-push type garbage incinerator ACC control system, which adopts the multi-drive reverse-push type garbage incinerator ACC control method.
Compared with the prior art, the invention has the beneficial effects that: the material layer thickness of each section of air chamber is calculated, and control data is output to control the material pushing speed to control the whole feeding amount so as to achieve the purpose of controlling the material layer thickness of the grate; the burning position of the garbage burning fire bed is judged through temperature detection in the fire grate and on the fire grate, and then control data is output to adjust the action speed of the fire grate so as to adjust the burning fire bed to be in the optimal position; on the basis, garbage load or boiler load is set in series through primary air, combustion is controlled by secondary air in an auxiliary mode, so that hearth disturbance and hearth temperature can reach 850 degrees of better auxiliary control, functions such as flue gas residence time control and the like are set, a special control system is designed for the multi-drive reverse-pushing type garbage incinerator, and various control functions of the multi-drive reverse-pushing type garbage incinerator are perfected.
Drawings
FIG. 1 is a schematic workflow diagram of one embodiment of the present invention;
FIG. 2 is a functional block diagram of an ACC control system according to an embodiment of the present invention;
FIG. 3 is a logical relationship diagram of an auto-ignition control flow according to an embodiment of the present invention;
FIG. 4 is a flow chart of a wastewater flushing process control according to an embodiment of the present invention;
FIG. 5 is a functional block diagram of an automatic air volume control according to an embodiment of the present invention;
FIG. 6 is a block diagram of auxiliary combustion logic for one embodiment of the present invention;
FIG. 7 is a schematic diagram of a garbage heating value prediction calculation according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the flue gas residence time calculation of one embodiment of the present invention;
FIG. 9 is a system block diagram of one embodiment of the invention;
fig. 10 is a block diagram of the ACC control system of an embodiment of the present invention;
FIG. 11 is a block diagram of the power supply system of one embodiment of the present invention;
FIG. 12 is a schematic diagram of a relay monitor power supply function according to one embodiment of the present invention;
FIG. 13 is a control schematic of an in-situ control box of one embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The multi-drive reverse-push type garbage incinerator is a type of garbage incinerator, and multiple hydraulic cylinders are used to drive multiple rows of grates to make reverse-push and back-back reciprocating motion. The ACC control system is a special control system for realizing automatic combustion in the production process, and mainly controls the action of each movable part of the incinerator by controlling the oil passage, the oil cut-off passage and the oil passing amount of a hydraulic system, so that the automation of the production process is realized. The present embodiment is directed to a method and a system for controlling an ACC in such a multi-driving reverse-pushing type garbage incinerator.
As shown in fig. 1, this example provides a method for controlling an ACC of a multi-drive reverse-push type garbage incinerator, which includes the following steps:
step S1, collecting data of the garbage incinerator;
step S2, analyzing and processing the collected data to obtain control data;
step S3, outputting the control data to a field device;
in step S2, the thickness and the combustion position of each segment of the material layer are analyzed and processed to obtain control data on the speed and the operation.
In step S1, the collected data of the waste incinerator includes one or more of setting parameters, measured values of multi-layer temperature of the furnace, measured values of main steam flow, measured values of drum pressure, measured values of air pressure of the air chamber, measured values of air volume of the air chamber, and measured values of temperature on the grate.
An advanced control idea and a perfect control strategy can have adaptability to the adjustment of combustion, and simultaneously, the efficiency of the boiler is improved, and the production benefit is improved. In the embodiment, the ACC control system acquires data such as working condition parameters, parameter setting, operating instructions, incinerator equipment, on-site other equipment states and the like of the DCS, and sends out control instructions of corresponding equipment after data processing and logic strategy operation execution are carried out in a CPU (central processing unit) controller of the ACC control system. And simultaneously, feeding back corresponding data to the DCS system for central control room monitoring and recording. The connection between the component block diagram of the ACC control strategy software and other systems is shown in FIG. 2. The DCS system is a data acquisition system of the waste incinerator, and the ACC control system is a control system for analyzing and processing data acquired during the combustion process of the incinerator, namely an Automatic combustion control system, also called an Automatic combustion control system.
From the functional block diagram of the ACC control system of fig. 2, the ACC control system is mainly divided into three major parts, incinerator control, auxiliary control and auxiliary calculation functions, as a key part of the production process of ACC automatic control combustion.
The control function of the incinerator control is mainly to control the equipment of the incinerator, and comprises automatic mode control, equipment speed control, auxiliary working condition control, equipment action control and program control, and the logical relationship of the automatic combustion control flow is shown in fig. 3. The speed control in the incinerator control is mainly divided into artificial speed setting and automatic load cascade control setting.
The manual speed setting is mainly performed by manual input of operators according to actual running requirements in the ACC operation process so as to control the material pushing speed, the grate speed and the roller speed. Automatic load cascade control setting. In the automatic state, the ACC control system automatically sets the load through a generator of a special speed according to the set load target value; the generator is mainly a function relation module which is set through the incinerator and the characteristics of the incinerated garbage. The manual speed setting or the load-based cascade automatic setting may be switched using a selector.
Due to the previously generated speed, which to a certain extent is theoretical, inadaptation of the control can occur in the actual process. Therefore, the present embodiment introduces the control of the speed of the material layer, the coefficient value (or the deviation value) determined according to the material layer control and the combustion position, which is sent to the respective equipment after being corrected in the comprehensive calculation module.
It is worth mentioning that the feeding speed of the embodiment is mainly corrected by the thicknesses of the material layers of the drying section and the combustion section; the speed of the fire grate is mainly corrected by the combustion position; the speed of the roller is mainly corrected by the thickness of the material layer of the burning and burning-out section.
The speed instructions of the feeding and the fire grate are controlled by adjusting the flow rate of oil of hydraulic cylinders of the feeding and the fire grate; the speed command of the roller is controlled by adjusting the action period of the roller. In the speed control module, a speed calibration function of a speed-action period is carried out on each device, the linearity of the set speed and the action of the device is ensured, and the action speed difference is avoided.
The automatic mode control of the incinerator control in this embodiment is mainly classified into automatic furnace temperature control, automatic steam load control, and cross control of the two. In the automatic furnace temperature control mode, an improved method of jointly calculating the deviation amount of the controlled temperature and the change rate and the change direction of the controlled temperature is mainly introduced, so that a fire grate action command can be sent out in advance in a quantized mode, and the defect that garbage combustion lags and control lags is overcome.
That is, step S2 in this example includes the following substeps:
step S201, analyzing and processing the controlled deviation amount and the change rate thereof to obtain control data for automatically controlling the furnace temperature and/or the steam load;
and S202, analyzing and processing the thickness and the combustion position of each section of the material layer to obtain control data of speed and action.
Under the automatic furnace temperature control mode, an improved method of jointly calculating the deviation amount of the controlled temperature and the change rate and the change direction of the controlled temperature is mainly introduced, so that a fire grate action command can be sent out in advance in a quantized mode, and the defect that garbage combustion lags and control lags is overcome. Specifically, in step S201 in this example, the formula is used
Analyzing and processing the controlled deviation value and the change rate of the furnace temperature to obtain a grate action control parameter R, wherein T is the measured temperature of the furnace chamber,
the set value of the real temperature measurement change rate of the furnace hearth is SP which is the set value of the furnace hearth temperature, R is 1 which indicates the start of the grate, and R is 0 which indicates the stop of the grate.
Formula (II)
In, rate of change set point
Representing the variation trend, can be according to the actual needTo be set and adjusted; the furnace temperature set value SP can also be set and adjusted according to actual needs; the grate operation control parameter R equal to 1 indicates starting the grate operation, and the grate operation control parameter R equal to 0 indicates stopping the grate operation.
Formula (II)
The software program of (1) preferably has a logic formula as follows:
the logical action relationship in this formula is described as follows: starting fire grate action conditions: a. when the temperature of the hearth is low, the temperature rises and is relatively unpleasant; b. when the temperature of the hearth is low, the temperature is reduced; c. when the furnace temperature is high, the temperature drops and is relatively fast. Stopping fire grate operation conditions: a', when the temperature of the hearth is high, the temperature is reduced and is relatively unpleasant; b', when the temperature of the hearth is high, the temperature rises; c', when the furnace temperature is high, the temperature rises relatively fast. Wherein e is a predefined deviation set value, and can be modified and adjusted according to actual needs.
In the load automatic control mode, the change rate of the drum pressure is mainly introduced, and the fire grate action command can be quantitatively sent out in advance by an improved method of common operation of the deviation of the controlled load and the size and direction of the change rate of the drum pressure, so that the defect of control delay of garbage combustion large delay is overcome. Specifically, in step S201 in this example, the formula is used
Analyzing and processing the controlled deviation amount of the load and the change rate of the pressure of the steam pocket to obtain a grate action control parameter R, wherein Q is the actual steam load of the boiler,
can be set according to actual requirements for the set value of the change rate of the pressure of the steam drumAnd adjusting; SP' is a set value of the steam load of the boiler, and can be set and adjusted according to actual needs.
Formula (II)
The software program of (1) has the logic formula variant:
the logical action relationship in this formula is described as follows: the conditions of the pneumatic fire grate action are as follows: a. when the boiler steam load is low, the drum pressure rises and is relatively unpleasant; b. when the steam load of the boiler is low, the pressure of the steam drum is reduced; c. when the boiler steam load is high, the drum pressure drops relatively quickly. Conditions for stopping the grate operation: a. when the boiler steam load is high, the drum pressure drops and is relatively unpleasant; b. when the steam load of the boiler is high, the pressure of the steam drum rises; c. when the boiler steam load is high, the drum pressure rises relatively quickly.
That is, if the furnace temperature automatic control mode is selected, the formula is adopted
If the load automatic control mode is adopted, the formula is adopted
It should be noted that the measured operating condition parameters of the controlled parameters of this embodiment, such as furnace temperature, load, drum pressure, etc., are preferably subjected to numerical processing, such as filtering, periodic mean value, etc., before entering automatic control. The present embodiment can select an automatic furnace temperature control mode or an automatic load control mode according to actual needs, automatically enter an automatic mode control block, manually select the automatic mode, and select a cross automatic mode, that is, a cross automatic control mode of the automatic furnace temperature control mode and the automatic load control mode.
The pure furnace temperature automatic control mode mainly achieves constant furnace temperature control of combustion through control of the temperature of a hearth. The pure load automatic mode achieves the constant load control of stable boiler output mainly through the control of the steam load at the outlet of the boiler. A cross automatic control mode of an automatic furnace temperature control mode and an automatic load control mode, which is a load control mode mainly used for ensuring that the steam load reaches a set target value; meanwhile, furnace temperature automatic control is introduced to prevent the temperature of the hearth from rising too fast, falling too fast, over-temperature, low temperature and the like, so as to stabilize load and prevent large fluctuation, and simultaneously meet the minimum requirement of being more than or equal to 850 ℃ for environmental protection and the furnace temperature limiting function of being more than or equal to 1050 ℃ for high-temperature coking.
In order to cooperate with the control of high-efficiency combustion, the material layer thickness is proper and the combustion position is proper.
The present embodiment mainly judges the thickness of each section of material layer, sends the state of the material layer thickness to the feeder and the roller for speed adjustment, and further realizes a material layer thickness control mode. The indirect measurement method of the embodiment is used for mapping the thickness of the discharged material layer, and the actual thickness value of the material layer is represented by adopting the primary air quantity corresponding to the primary air pressure difference. And comparing the actual thickness value of the material layer with the output value of the primary air volume forming standard function, wherein the deviation of the actual thickness value of the material layer and the output value of the primary air volume forming standard function shows a certain material layer state in a certain range. The formula is as follows: delta PFire grate+ΔPMaterial layerF (q), wherein the grate resistance forms a differential pressure Δ PFire grateThe differential pressure deltaP formed by the resistance of the material layer is a relatively fixed function relationMaterial layerAnd the air quantity q presents a one-to-one correspondence relationship. Thus, with Δ P of the calibration bedStandard of meritTo characterize a suitable layer thickness for the layer. Actually measured wind resistance pressure difference delta PMeasuringAnd Δ PStandard of meritThe corresponding function values are compared logically. At Δ PStandard of meritThe new delta P can be formed by calibrating the wind resistance pressure difference under the changed multistage wind quantity qCalibrationThe value, therefore, is determined by the actual measurement Δ P at the actual measurement air quantity qMeasuringCorresponding to Δ PCalibrationThe deviation value is compared with a set value to form the state of the material layer.
Therefore, in step S202 of this example, the formula is judged by logic
Analyzing and processing the thickness of each section of material layer to obtain a material layer thickness judgment value, wherein e is a predefined deviation set value delta PMeasuringFor actually measuring the wind resistance pressure difference, delta PCalibrationFor calibrating the wind resistance pressure difference, HH represents that the material layer thickness judgment value is thick, H represents that the material layer thickness judgment value is thick, L represents that the material layer thickness judgment value is thin, and LL represents that the material layer thickness judgment value is thin; and increasing the feeding speed with the decrease of the judging value of the thickness of the material layer.
Namely, the thickness state signal state of the material layer at the drying and burning section is sent to a feeding speed control module: when the material layer thickness of the dry combustion section is thick, the feeding speed is reduced, otherwise, the feeding speed is increased; the thickness state signal state of the burnout section material layer is sent to the roller speed control module: when the burnout section material layer is thick, the roller speed is increased (the action period is reduced), otherwise, the roller speed is reduced (the action period is increased).
The combustion position state in the embodiment is mainly based on the comparison of the actual temperature measured by the temperature measuring elements arranged at the grate outlet of the drying section and the grate inlet of the burnout section of the grate of the incinerator with a set value to judge the garbage combustion position. When the actually measured flue gas temperature at the grate outlet of the drying section is higher, indicating that the combustion is close to the front, sending a state signal that the combustion position is close to the front; and if the state is normal, no forward state signal is sent. When the actually measured flue gas temperature at the entrance of the grate of the burnout section is higher, indicating that the combustion is backward, sending a state signal of backward combustion position; and if the combustion is normal, a state signal of the later combustion is not sent.
The two signal states are sent to a fire grate speed control module: when the combustion is close to the front, the grate speed is increased, and conversely, the grate speed is reduced.
That is, in step S202 of this embodiment, the actual flue gas temperature measured by the temperature measuring devices disposed at the outlet of the drying section grate and at the inlet of the after-burning section grate of the incinerator grate is compared with the set value of the flue gas temperature to determine the garbage burning position, and when the actual flue gas temperature at the outlet of the drying section grate is higher than the set value of the flue gas temperature, it is determined that the burning is forward, a state signal indicating that the burning position is forward is sent, and the grate speed is increased; when the actually measured flue gas temperature at the entrance of the grate of the burnout section is higher than the set value of the flue gas temperature, the situation that the combustion is close to the back is judged, a state signal that the combustion position is close to the back is sent out, and the speed of the grate is reduced.
The action control of the embodiment is used for controlling the coil of the reversing valve for controlling the action of equipment to control the direction control of the action of circulating equipment such as a fire grate, a feeding device, a roller and the like, and mainly comprises the following steps: the self-circulation action of the equipment is set according to the speed, and is also called time control; in the automatic control state, the controller operates according to an automatic control command (R is equal to 1, and R is equal to 0 and stops); meanwhile, the thickness state of the material layer in the dry combustion section is received, when the material layer is too thick, the automatic continuous feeding action is locked, and when the material layer is too thin, the feeding is started in advance.
Controlling the fire grate action: the self-circulation action of the equipment is set according to the speed, and is also called time control; in the automatic control state, the controller operates according to an automatic control command (R is equal to 1, and R is equal to 0 and stops); at the same time, a combustion position is introduced, and when the position is too far forward, a pulse-type locking or early-action starting action is performed.
Controlling the action of the roller: periodic actions are mainly introduced to ensure that the burned furnace slag is continuously output; meanwhile, the material layer thickness state of the combustion burnout section is introduced, when the material layer is too thick, the continuous action is carried out to continuously discharge the slag, and when the material layer is too thin, the slag is discharged in a locking period.
The device sets up special control functions including: each self-circulation action device is provided with an anti-jamming control function and an oil-path impact prevention control function
The anti-jamming control function: and automatically calculating time of each action of the equipment, comparing the time with the time required by the speed command, and if the time is more than the required time, indicating that the action of the equipment has a jamming fault. At the moment, a reverse action instruction is sent, if the reverse action can be carried out in place, and the one-way card is indicated to be involved, the forward action is normally sent, and the one-way card can be automatically eliminated after being involved in multiple actions; and sending a reverse action instruction, if the reverse action is also overtime, indicating that the card is in the middle or completely involved, and stopping the equipment to prevent the equipment from being damaged.
And as long as the jamming phenomenon occurs, an alarm message is generated to prompt an operator to check.
The oil path impact prevention control function includes: when the equipment acts in a reversing way, high-pressure oil has large impact on a pipeline, a hose at the oil cylinder is easy to damage, and the oil way anti-impact function is added at the moment. Before the equipment is reversed, the flow valve of the oil way is closed to a certain opening degree (such as 10%), and after the reversing action instruction is completely sent out, the proportional valve is completely opened to the instruction position, so that the impact of the oil way is greatly relieved.
The program control in fig. 3 includes an air chamber ash discharge program control and a sewage flushing program control, wherein in the air chamber ash discharge program control, gaps exist among fire grates, a certain ash falling amount exists in the air chamber, and the air chamber ash discharge program control is required to be set for ensuring normal production operation. The control flow chart of the sewage flushing program is shown in fig. 4, and is explained by taking 4 rows of fire grates (the same reason of the multiple rows of fire grates) as an example: the starting instruction module receives an instruction sent by an upper computer or a DCS and sends out a starting instruction; if the washing water pressure is normal, starting the row 1 washing, carrying out next row washing after a period of time, and finally washing the main pipe; and starting cycle timing after the washing process is finished until the cycle time is up, and starting the next washing again.
The auxiliary control comprises automatic air quantity control, automatic auxiliary combustion and auxiliary calculation.
In the automatic air quantity control, primary air and secondary air mainly ensure the air quantity required by combustion, the content of oxygen is the embodiment of the excess air quantity in the flue gas after combustion, and CO is the embodiment of insufficient combustion. Therefore, the combustion demand air volume is mainly controlled by the primary air volume and the secondary air volume, and a control functional block diagram thereof is shown in fig. 5.
The primary air automatic control is to ensure the primary air quantity of the drying section and the primary air quantity of the combustion section required by the garbage on the fire grate. The automatic primary air control is mainly characterized in that after the garbage heat value and the load are set, the standard air quantity is generated after the calculation of a function formula; the coefficient K1 is corrected by a coefficient correction function of the smoke retention time to generate a primary air volume set value; introducing the corrected primary air volume set value into a setting end of a primary air volume PID; the measured value of the primary air volume is introduced into a measuring end of the primary air volume PID after being subjected to multi-stage filtering processing calculation; the output end of the primary air quantity PID directly controls a control module of a primary fan frequency conversion (or an air door) so as to control the primary air quantity.
The secondary air automatic control mainly ensures the air quantity required by the secondary combustion of the gas generated after the combustion of the boiler system and the disturbance effect on the flue gas. The secondary air automatic control main CO actual measurement parameters are integrated with an oxygen amount set value through a correction function and then introduced into a set end of an oxygen amount PID; introducing an actual oxygen measurement value of the boiler into a measurement end of an oxygen PID (proportion integration differentiation) through a time interval mean value; the output end of the oxygen volume PID outputs the initial value of the secondary air volume, the initial value is introduced into the setting end of the secondary air volume PID after passing through the proportioning limit block of the primary air volume and being corrected by the coefficient K2 of the flue gas residence time, and the measured value of the secondary air volume is introduced into the measuring end of the secondary air volume PID after being subjected to multi-stage filtering processing calculation.
In the automatic air volume control, under the condition that the oxygen content/CO is relatively reasonable (automatic control is allowed), furnace temperature deviation adjustment is introduced to correct a secondary air volume setting coefficient K2 so as to achieve the aim of quickly controlling the furnace temperature by secondary air.
That is, step S2 of this embodiment further includes step S203, in which step S203, the primary air volume set value is introduced to the setting end of the primary air volume PID, the actual primary air volume measured value is introduced to the measuring end of the primary air volume PID after being subjected to the multi-stage filtering process, and the output end of the primary air volume PID is used for controlling the primary air volume; introducing an actual measured value of oxygen quantity of the boiler into a measuring end of an oxygen quantity PID (proportion integration differentiation) through a time interval mean value, outputting an initial value of secondary air quantity by an output end of the oxygen quantity PID, introducing the initial value of the secondary air quantity into a setting end of the secondary air quantity PID after a primary air quantity matching limiting block and a flue gas retention time correction, introducing the actual measured value of the secondary air quantity into the measuring end of the secondary air quantity PID after multi-stage filtering treatment, and controlling the secondary air quantity by an output end of the secondary air quantity PID.
The auxiliary combustion device of the embodiment is used for starting the combustor at the low furnace temperature side to ensure that the environment-friendly furnace temperature is not lower than 850 ℃ under the condition that the waste incineration of the boiler system is not good and the furnace temperature is lower than or close to 850 ℃. The logic block diagram is shown in fig. 6.
When the temperature of one side of the furnace is lower than 900 ℃ (the temperature can be adjusted according to the lag time of a fuel system), starting a fuel pump, and establishing oil pressure for the whole combustor for preparation; when the actual measured value of the furnace temperature on the left side is lower than 880 ℃ (adjusted according to the characteristics of the combustor), starting the combustor, and adjusting the furnace temperature object on the left side through a left side furnace temperature control PID so as to meet the environment-friendly requirement of the furnace temperature; the right side is the same as the left side.
That is, step S2 in this example further includes step S204, in step S204, when the furnace temperature is greater than the first preset temperature and less than the second preset temperature, the second preset temperature is preferably 900 ℃, and the fuel pump is started; when the temperature of the hearth is lower than a first preset temperature, starting the burner, wherein the first preset temperature is preferably 880 ℃. The first preset temperature and the second preset temperature can be adjusted in a user-defined mode according to actual conditions.
In the auxiliary calculation, parameters of the heat value of the garbage and the smoke retention time in the ACC air quantity automatic control system greatly help the automatic operation of the system and the combustion process, so that the heat value of the garbage and the smoke retention time can be calculated in an auxiliary manner.
Step S2 described in this example also preferably implements a garbage heat value prediction calculation, which is mainly calculated by a back-extrapolation method and a fuzzy estimation method. The logic block diagram of the control algorithm is shown in FIG. 7; in fig. 7, the evaporation amount and the garbage disposal amount in the garbage heat value calculation block diagram mainly take the accumulated amount of a long time (e.g., 2 hours or more). The data is used as a statistical calculation mode and is obtained to be used as a reference set value in automatic control. And meanwhile, the parameter is transmitted to a DCS system as a monitoring parameter.
In this embodiment, step S2 also preferably implements calculation of the flue gas residence time, as shown in fig. 8, the flue gas flow at each layer of temperature point is converted from the flue gas flow at the standard condition of the boiler after the DCS system collects and calculates the flow velocity according to the boiler furnace parameters, and the flue gas residence time at each layer is calculated; calculating the smoke temperature point of 850 ℃ at each layer of hearth temperature point; accumulating the total residence time of the flue gas at the temperature of more than or equal to 850 ℃ according to the residence time of the flue gas at the temperature of more than or equal to 850 ℃ and the flow velocity of the corresponding flue gas.
The smoke retention time is controlled to be more than 2 seconds in the embodiment.
In the method, the deviation amount of a controlled object and the size and direction of the corresponding change rate are innovatively adopted to jointly calculate in two methods of constant temperature of 'hearth temperature control' and constant load of 'boiler load control', so that a fire grate action command can be quantitatively sent out in advance, and the problem of large delay in the waste incineration process is effectively solved.
The whole feeding amount is controlled by calculating the material layer thickness of each section of air chamber and controlling the material pushing speed so as to achieve the purpose of controlling the material layer thickness of the grate; the position of a garbage combustion fire bed is judged through temperature detection in the fire grate and on the fire grate, and then the action speed of the fire grate is adjusted to adjust the combustion fire bed to be in the optimal position; the garbage load or the boiler load is set in series through primary air, combustion is controlled through auxiliary control of secondary air, and the disturbance of a hearth and the temperature of the hearth reach 850 are controlled well in an auxiliary mode, so that the air quantity auxiliary combustion control function is realized; in order to fully meet the requirement of environmental protection emission, the residence time of the flue gas is controlled to be more than 2 seconds; the garbage thermal prediction calculation is realized, the reference setting is automatically provided, and the management data reference of the garbage warehouse is provided for the manager.
In summary, the present embodiment controls the whole feeding amount by calculating the material layer thickness of each section of air chamber and outputting control data to control the material pushing speed, so as to achieve the purpose of controlling the material layer thickness of the grate; the burning position of the garbage burning fire bed is judged through temperature detection in the fire grate and on the fire grate, and then control data is output to adjust the action speed of the fire grate so as to adjust the burning fire bed to be in the optimal position; on the basis, garbage load or boiler load is set in series through primary air, combustion is controlled by secondary air in an auxiliary mode, so that hearth disturbance and hearth temperature can reach 850 degrees of better auxiliary control, functions such as flue gas residence time control and the like are set, a special control system is designed for the multi-drive reverse-pushing type garbage incinerator, and various control functions of the multi-drive reverse-pushing type garbage incinerator are perfected.
The present embodiment also provides a system for controlling a multi-driving reverse-pushing type garbage incinerator ACC, which uses the above-mentioned method for controlling a multi-driving reverse-pushing type garbage incinerator ACC, and the architecture diagram of the system connection relationship of the important bridges mainly connected with field devices and DCS is shown in fig. 9.
The ACC control system mainly adopts an inlet PLC with reliable performance as a control platform, and the control strategy of the incinerator is standardized and integrated in the platform, so that management, optimization and upgrade and personnel training are facilitated. The ACC control system is a loading platform device for running an automatic combustion control program, and all control strategies, protection logics and the like are operated on the platform. Meanwhile, the control system also receives an operation instruction and parameter setting of a central control room operator of the DCS system, detects the state of equipment, sends out a control instruction and controls field equipment through a driving loop of the control system. A block diagram of the ACC control system is shown in fig. 10.
The ACC control system is mainly divided into an in-cabinet device and an out-cabinet device, a main power system, a PLC platform, a relay isolation, an amplifier, an air-conditioning exhaust system and the like, and is integrated in a local control cabinet of the in-cabinet device, and the out-cabinet device mainly comprises a local control box and an emergency operation box.
The power supply system mainly comprises a main power supply, a power converter and a power indicator, as shown in fig. 11. The power supply system introduces two paths of power supplies, one path of UPS outputs an ACC 220V power supply (or a power supply after switching of a thermal disc) as a control main power supply, and the power supply mainly supplies power for the interior of components in the cabinet; the ACC 220V power supply after one path of thermal disk is switched is an air conditioner lighting main power supply and is mainly used for air conditioners, lighting and other power supplies. Each path of main power supply is respectively connected into a 7-power supply indicator arranged on a 6-secondary door. The two main power supplies are separately arranged, so that the interference of the control power supply caused by equipment failure can be prevented.
And the control power supply system leads out two control power supplies from the control main power supply to be used as a servo drive card and a PLC touch screen for special power supply. Because the power quality influences the control precision of the flow valve servo drive card, the power requirement is strict, and the PLC touch screen is important internal equipment, the power is supplied by two paths of power sources.
Two branch switches are led out from the control main power supply to respectively control two DC24V power supplies, and then the two branch switches are unidirectionally coupled to a common line bank through diodes. Meanwhile, a power indicator arranged on the secondary door is respectively accessed from a DC24V power supply and a DC24V power supply. On the public line row, leading out multiple paths of signals which are respectively sent to each flow valve servo drive card through fuses and used as a power supply of the flow valve servo drive cards; one path of the lead-out is sent to the PLC touch screen through a safety wire and a switch to be used as a power supply of the PLC touch screen.
Three control power supplies are led out from the control main power supply and are mainly used for power supplies of a local control box and a reversing valve of controlled equipment. Three branch switches are led out from the control main power supply to respectively control three DC24V power supplies, and then the three branch switches are unidirectionally coupled to a common line bank through diodes. Meanwhile, power indicators arranged on the secondary door are respectively accessed from two DC24V power supplies and a third DC24V power supply. And on the public line row, a switch of each group of equipment is led out and respectively used as a power supply of each control box and a reversing valve.
A control power supply is led out from the control main power supply and is mainly used for controlling a rack power supply by a PLC. A branch switch is led out from a control main power supply and is connected with a power supply module of the PLC control rack, and the power supply module directly supplies power to each clamping piece on the rack.
The output end of the module where the DC24V power supply is located is led out to the monitoring relays of the DC24V power supply in parallel at the positions where the voltages are respectively led out to the indicating tables, a first pair of contacts of each power supply monitoring relay are output to the alarm on the secondary door in a parallel combination mode, a second pair of contacts are output to the terminal row in a parallel combination mode, and finally the alarm is generated through collection of the main control DCS. A schematic diagram of the relay monitoring power supply function is shown in fig. 12.
Two paths of power supplies are led out from the main power supply of the air-conditioning lighting and are used as special power supplies for the air-conditioning system and the lighting in the cabinet. Because equipment such as air conditioner, illumination easily breaks down, produce the influence to the power. Therefore, in order to ensure that the control power supply does not interfere, a dedicated power supply independent of the control power supply is used. Two branch switches are led out from the main power supply of the air-conditioning lighting, and are respectively sent to an air-conditioning system and a lighting system, and a multi-jack socket is also connected. At the same time, the 7-power indicator arranged on the 6-secondary gate is accessed from the mains.
As shown in fig. 10, the policy control platform adopts a PLC system as a software operating platform of the logic policy. A PLC system configured for controlling each equipment object of the incinerator according to actual. The system mainly comprises an internal power supply, a CPU, a data acquisition card, a communication interface and an HMI touch screen.
And the power supply is used as a power supply for the PLC platform internal module. The power input end is a PLC power supply which is led out from a control main power system and is specially used for supplying power. The present power supply may transform AC220V voltage to DC24V power to power each module through the chassis backplane connection.
The CPU is the core of the PLC, the input unit and the output unit are interface circuits connected between the field input/output equipment and the CPU, and the communication interface is used for being connected with peripherals such as a programmer, an upper computer and the like. The CPU is used as a running and executing carrier of the software program.
The data acquisition card, also called I/O card, is mainly composed of DI/DO data acquisition card and instruction output card. The number is configured according to the number of I/O points of the signal type of the actual measurement and control object and the number of channels of the I/O card, and the integrity of the monitoring point location is achieved.
The communication interface is used as a special interface for external data exchange, is configured mainly according to the characteristics of a communication object, and mainly comprises main protocols such as Profibus-DP/Modbus-RTU and the like.
The HMI touch screen is also called a local operation station, and a 10-12 inch touch screen is suitable. The touch screen is integrated with human-computer interaction configuration, and is communicated with the PLC through a special MPI cable to receive and acquire display data and send an operation instruction of the touch screen.
The relay isolation loop is used for protecting the PLC platform and mainly plays a role in isolation protection between an I/O card of the PLC and a controlled object. Firstly, in a low-power and low-current loop of DI/DO signal exchange of signal transmission, a miniature relay is adopted for isolation; and secondly, a universal relay is adopted in a controlled high-power and high-current driving loop such as a reversing electromagnetic valve, a motor driving loop, a pipeline electromagnetic valve and the like. Therefore, the equipment cost and the space in the cabinet can be saved.
The flow valve amplifier, also called as flow valve controller and proportional valve controller, is a special module matched with the proportional flow valve. The intelligent control system mainly receives a national standard 4-20 mA signal sent by a PLC platform, and outputs a control instruction to a field flow electromagnetic valve after signal processing and software calculation of hardware of a circuit of the intelligent control system.
The equipment outside the cabinet of the ACC control system comprises an air-conditioning exhaust system, an emergency stop system and a local control box. The air-conditioning exhaust system is also an in-cabinet heat control system. In the normal operation process, electronic components in the cabinet can produce certain heat, and the temperature can rise along with external ambient temperature rise, operating duration increase can rise in the cabinet. Therefore, a single refrigeration air conditioner with main temperature control is arranged on one side surface, and a forced auxiliary exhaust fan is arranged on the top.
When the air conditioner is put into operation, the exhaust fan stops operating, the temperature in the cabinet is regulated by the air conditioner, the air in the cabinet is relatively isolated from the outside, and the air in the cabinet and the air conditioner are cooled in a self-circulation manner, so that too much severe air does not enter the cabinet; when the air conditioner breaks down, the air exhaust fan is started, and the ventilation opening of the air exhaust fan on the cabinet door is used for circularly cooling the air inside and outside the cabinet so that the normal operation of the PLC does not influence normal production.
The emergency stop system is realized by arranging an emergency stop button on a secondary door of the cabinet body. In case of emergency, the button stops the operation of the main incinerator to reach the aim of safety.
An on-site control box is arranged beside a hydraulic oil cylinder of a control device of the incinerator, and the control principle of the on-site control box is shown in figure 13. The door of the local control box is provided with a universal door lock, and the edge of the local control box adopts a flexible plastic soft strip. Under normal operating conditions, the door is fully closed, and the whole box body is in a fully closed state and isolated from the outside air. The protection IP level reaches 54. The method mainly comprises the following steps: the power supply indicator light is yellow, and is always on when power is on; a signal indicator light of an oil cylinder advance in-place detection switch is red, and is always on when an in-place signal is generated; an oil cylinder retreats to the position and detects the signal indicator light of the switch, green, it is often lighted when there is the signal of reaching the position. A 3-bit change-over switch, the input port of which is connected with a power supply DC24V +, and when the switch is turned to the left (or right), the switch outputs the power supply to the command button, and when the switch is turned to the right (or left), the switch outputs a passive NO contact to the terminal strip and sends the passive NO contact to the ACC as an operation authority selection signal; a forward command button with red color and light indication, when the change-over switch is switched to the on-site operation, the forward operation command of the oil cylinder with DC24V is sent out in a pressed state, and the indicator light is lightened; a backward command button, green, with light indication, when the switch is switched to the on-site operation, the press state sends the cylinder backward operation command with DC24V, and the indicator light is on.
In the communication between the ACC control system and the central control DCS system, the ACC control system mainly uses a PLC control station centralized control mode, and it mainly uses two modes of hard wiring and soft communication with the DCS system of the central control room:
a hard-wired mode is characterized in that instructions sent by a PLC control station pass through a data I/O card, each signal is transmitted to the data I/O card of a DCS (distributed control system) of a central control room through each group of cables, and then the DPU control station collects and operates the signals and displays the signals on a human-computer interface of an operation station. The signals adopting the mode are mainly important operations (such as automatic instructions, speed setting, control modes and the like of equipment), protection signals (MFT action, sudden stop and the like), main states (travel, forward moving, backward moving, in place and the like) of the equipment, comprehensive alarm and the like, and the signals are transmitted by adopting an international standard mode, so that the method is relatively simple, reliable and convenient to maintain, but the number of I/O channels occupying hardware is large, and the system cost is high compared with that of a full communication mode.
A soft communication mode is characterized in that a command sent by a PLC control station is transmitted to a DPU communication interface of a DCS system of a central control room through a communication interface, and then the DPU control station directly accesses data for operation from the communication interface. The method generally adopts protocols such as Profibus-DP or MODBUS-RTU, the transmitted signals mainly comprise a large number of intermediate variables, special working condition setting, equipment diagnosis information, subitems alarm and the like, a large number of data can be concentrated, a large number of I/O cards and cables are saved, the system cost is greatly reduced, and personnel are required to have related communication maintenance capability.
Auxiliary equipment of the incinerator, such as a primary air system and a secondary air system, is subjected to logic operation and analog regulation by an ACC control system, and an automatic control instruction is sent to a DCS in a centralized mode. The main control room DCS system is directly connected with the devices through hard wiring, and integral comprehensive control is achieved.
Therefore, the multi-driving reverse-pushing type garbage incinerator ACC control system of the present embodiment, based on the above-mentioned multi-driving reverse-pushing type garbage incinerator ACC control method, brings obvious effects in the hardware part: by adopting a brand new network structure, the effective operation under the communication fault is ensured, and the rich and perfect monitoring information of the main control room DCS under the normal communication is also ensured; the functions of air-conditioning exhaust equipment and a secondary cabinet door panel are realized; advanced PLC is adopted as a control unit, and the power supply loop with redundancy and function independence controls the functions of the box on site.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. A multi-drive reverse-push type garbage incinerator ACC control method is characterized by comprising the following steps:
step S1, collecting data of the garbage incinerator;
step S2, analyzing and processing the collected data to obtain control data;
step S3, outputting the control data to a field device;
in step S2, analyzing and processing the thickness and the combustion position of each section of the material layer to obtain control data of speed and motion;
the step S2 includes the following sub-steps:
step S201, analyzing and processing the controlled deviation amount and the change rate thereof to obtain control data for automatically controlling the furnace temperature and/or the steam load; in step S201, according to the formula
Analyzing and processing the controlled deviation value and the change rate of the furnace temperature to obtain a grate action control parameter R, wherein T is the measured temperature of the furnace chamber,
setting a real temperature measurement change rate of a hearth, setting SP as the temperature of the hearth, wherein R is 1 to start the grate to act, and R is 0 to stop the grate to act; or, according to the formula
Analyzing and processing the controlled deviation amount of the load and the change rate of the pressure of the steam pocket to obtain a grate action control parameter R, wherein Q is the actual steam load of the boiler,
is set value of steam drum pressure change rate, SP' is set value of boiler steam load;
step S202, analyzing and processing the thickness and the combustion position of each section of the material layer to obtain control data of speed and action, wherein in the step S202, a formula is judged through logic
Analyzing and processing the thickness of each section of material layer to obtain a material layer thickness judgment value, wherein e is a predefined deviation set value delta PMeasuringFor actually measuring the wind resistance pressure difference, delta PCalibrationFor calibrating the wind resistance pressure difference, HH represents that the material layer thickness judgment value is thick, H represents that the material layer thickness judgment value is thick, L represents that the material layer thickness judgment value is thin, and LL represents that the material layer thickness judgment value is thin; increasing the feeding speed along with the reduction of the judging value of the thickness of the material layer;
in the step S202, each device self-circulation action device is provided with an anti-jamming control function and an oil-path impact prevention control function, in the anti-jamming control function, time is automatically calculated for each action of the device, the time is compared with time required by a speed instruction, and if a jamming failure occurs in the action of the device, a reverse action instruction is issued; if the reverse action can be performed in place, the forward action is normally performed; sending a reverse action instruction, and if the reverse action is also overtime, stopping the equipment; when the jamming phenomenon occurs, an alarm signal is generated to prompt an operator to check; in the oil-way impact prevention control function, when the equipment is in reversing action, the oil-way impact prevention function is added; before the equipment is reversed, the flow valve of the oil way is closed to a certain opening degree; after the reversing action command is completely sent out, the proportional valve is completely opened to a command position;
the thickness state signal state of the dry combustion section material layer is sent to a feeding speed control module: when the material layer thickness of the dry combustion section is thick, the feeding speed is reduced, otherwise, the feeding speed is increased; the thickness state signal state of the burnout section material layer is sent to the roller speed control module: when the burning cinder section material layer is thick, the roller speed is accelerated, otherwise, the roller speed is reduced.
2. The ACC control method for a multi-driving reverse-pushing garbage incinerator according to claim 1, wherein the collected data of the garbage incinerator in step S1 includes one or more of setting parameters, measured values of multi-level furnace temperature, measured values of main steam flow, measured values of drum pressure, measured values of air pressure in air chamber, measured values of air volume in air chamber, and measured values of temperature on fire grate.
3. The ACC control method of claim 1, wherein in step S202, the actual flue gas temperature measured by temperature measuring devices disposed at the exit of the dry grate and at the entrance of the burnout grate of the incinerator grate is compared with a set flue gas temperature value to determine the combustion position of the garbage, and when the measured flue gas temperature at the exit of the dry grate is higher than the set flue gas temperature value, the garbage incinerator determines that the garbage is in front of the combustion position, and sends a status signal indicating that the garbage is in front of the combustion position, and increases the speed of the incinerator grate; when the actually measured flue gas temperature at the entrance of the grate of the burnout section is higher than the set value of the flue gas temperature, the situation that the combustion is close to the back is judged, a state signal that the combustion position is close to the back is sent out, and the speed of the grate is reduced.
4. The ACC control method for a multi-driving reverse-push type garbage incinerator according to claim 1, wherein the step S2 further includes a step S203, in which the step S203 includes introducing a primary air volume setting value to a setting end of a primary air volume PID, performing multi-stage filtering processing on a measured value of the primary air volume, and introducing the measured value to a measuring end of the primary air volume PID, and an output end of the primary air volume PID is used for controlling the primary air volume; introducing an actual measured value of oxygen quantity of the boiler into a measuring end of an oxygen quantity PID (proportion integration differentiation) through a time interval mean value, outputting an initial value of secondary air quantity by an output end of the oxygen quantity PID, introducing the initial value of the secondary air quantity into a setting end of the secondary air quantity PID after a primary air quantity matching limiting block and a flue gas retention time correction, introducing the actual measured value of the secondary air quantity into the measuring end of the secondary air quantity PID after multi-stage filtering treatment, and controlling the secondary air quantity by an output end of the secondary air quantity PID.
5. The ACC control method of a multi-drive reverse push garbage incinerator according to claim 4, wherein the flue gas residence time is controlled to 2 seconds or more.
6. The ACC control method of a multi-driving reverse-pushing type garbage incinerator according to claim 1, wherein the step S2 further includes a step S204, wherein in the step S204, when the hearth temperature is higher than a first preset temperature and lower than a second preset temperature, a fuel pump is started; and when the temperature of the hearth is lower than a first preset temperature, starting the burner.
7. An ACC control system of a multi-driving reverse-pushing type garbage incinerator, characterized in that the ACC control method of any one of claims 1 to 6 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406450.3A CN110145745B (en) | 2019-05-16 | 2019-05-16 | Multi-drive reverse-push type garbage incinerator ACC control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406450.3A CN110145745B (en) | 2019-05-16 | 2019-05-16 | Multi-drive reverse-push type garbage incinerator ACC control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145745A CN110145745A (en) | 2019-08-20 |
| CN110145745B true CN110145745B (en) | 2020-11-24 |
Family
ID=67595682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910406450.3A Active CN110145745B (en) | 2019-05-16 | 2019-05-16 | Multi-drive reverse-push type garbage incinerator ACC control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145745B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686248A (en) * | 2019-09-12 | 2020-01-14 | 常熟浦发第二热电能源有限公司 | Method for stabilizing steam quantity of boiler for garbage power generation |
| CN111765477A (en) * | 2020-06-24 | 2020-10-13 | 广州环投从化环保能源有限公司 | Secondary air control method for garbage incinerator |
| CN112555209A (en) * | 2020-12-28 | 2021-03-26 | 上海康恒环境股份有限公司 | Electric control device for series-parallel switching of hydraulic oil circuit |
| CN113551531A (en) * | 2021-07-23 | 2021-10-26 | 中国恩菲工程技术有限公司 | Automatic control system of reaction furnace and state monitoring device of reaction furnace |
| CN113701160B (en) * | 2021-09-06 | 2023-07-07 | 中国天楹股份有限公司 | ACC automatic combustion control method for garbage incineration plant |
| CN113641098A (en) * | 2021-10-13 | 2021-11-12 | 光大环保技术装备（常州）有限公司 | Control method and control system of water-cooled grate control system |
| CN114417586A (en) * | 2022-01-11 | 2022-04-29 | 光大环保技术装备（常州）有限公司 | Method and system for calculating thickness of material layer on surface of water-cooled grate and incinerator |
| CN115031242A (en) * | 2022-06-28 | 2022-09-09 | 上海康恒环境股份有限公司 | Method and device for controlling operation of fire grate of garbage incinerator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236228C (en) * | 2003-06-19 | 2006-01-11 | 深圳绿色动力环境工程有限公司 | Method and apparatus for multi-driving inverse-push grate refuse incineration |
| CN100491826C (en) * | 2007-08-01 | 2009-05-27 | 重庆科技学院 | Multiple row sectional drive combined type domestic garbage incinerator |
| 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 |
| CN103216835B (en) * | 2012-11-28 | 2015-08-19 | 上海康恒环境股份有限公司 | One way of life incinerator automatic combustion oxygen content of smoke gas control system |
| CN106051784A (en) * | 2016-07-21 | 2016-10-26 | 杭州和利时自动化有限公司 | Combustion control method and device for incinerator |
| CN106838931A (en) * | 2017-02-24 | 2017-06-13 | 杭州和利时自动化有限公司 | A kind of control system for inclining reciprocal inverse-pushing type garbage incinerator |
| JP6584464B2 (en) * | 2017-09-12 | 2019-10-02 | 株式会社タクマ | Stoker-type incinerator and control method thereof |
-
2019
- 2019-05-16 CN CN201910406450.3A patent/CN110145745B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110145745A (en) | 2019-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110145745B (en) | Multi-drive reverse-push type garbage incinerator ACC control method and system | |
| CN104141964B (en) | Industrial furnace supply air system and method | |
| CN201827874U (en) | Control system of fuel oil/gas steam boiler | |
| CN101900316A (en) | Biomass boiler control system | |
| CN1707380A (en) | Intelligent control method for air compressor | |
| CN112284142B (en) | System and method for adaptively controlling smoke exhaust fan of low-temperature kiln | |
| CN104154545A (en) | Automatic combustion control method and automatic combustion control system for incinerator | |
| CN109595586B (en) | Combustion optimization method and system for preventing high-temperature corrosion of boiler based on CO online detection | |
| CN202470021U (en) | Intelligent control device of steam boiler system | |
| CN112197262B (en) | Intelligent control method for circulating fluidized bed coal-fired boiler | |
| CN103870877A (en) | System and method for intelligently controlling boiler combustion based on neural network | |
| CN202902291U (en) | Device and system for controlling three-driving inverse push type incinerator grate and feeding device | |
| CN209879328U (en) | Ultra-low emission desulfurization energy-saving operation system based on sulfur overall process monitoring | |
| CN201749349U (en) | Control system for industrial fuel annealing furnace | |
| CN201319128Y (en) | Optimized control system of heating furnace | |
| CN113834161A (en) | Variable air volume laboratory temperature control system and method | |
| CN201037654Y (en) | Energy-saving control device for industrial coal-burning boiler | |
| CN206754338U (en) | A kind of more gear speed governing of fluid coupling and equipment safety operation control system | |
| CN102155743A (en) | Ventilation control system and method applicable to dry type slag extractor | |
| CN108006665A (en) | A kind of waste incinerator flame situation judging and the method for control burning | |
| CN111766909B (en) | Control system for full-automatic operation of coal mixing process of metallurgical enterprise | |
| CN111911904B (en) | New energy boiler Internet of things data acquisition control system and acquisition method thereof | |
| CN100378016C (en) | Small perturbation reversal control method for kiln furnace | |
| CN112747475A (en) | Boiler control system | |
| CN217445075U (en) | Boiler emergency feed pump power distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |