CN108870737A

CN108870737A - A kind of electric-control system and control method of hot-blast stove

Info

Publication number: CN108870737A
Application number: CN201810665683.0A
Authority: CN
Inventors: 李庆金; 李耿; 张玉印; 张胜
Original assignee: Anhui Guwang Drying Machinery Co Ltd
Current assignee: Anhui Guwang Drying Machinery Co Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2018-11-23

Abstract

The invention discloses a kind of electric-control systems of hot-blast stove, including chaff room feeding control module to enter chaff bucket for controlling fuel；Empty furnace pan feeding module enters in combustion chamber for controlling fuel；Different frequency control modes is arranged for controlling the indoor fuel automatic combustion that burns in automatic combustion module；First stopping modular is used to stop the load operation of electric-control system；Frequency transformer control module uses linear regulation mode, regulates and controls the frequency that the frequency converter of load is exported, linear regulation mode is corresponding with the frequency control mode that automatic combustion module is arranged；The invention also discloses a kind of control methods.Frequency transformer control module of the invention selects different regulation and control models according to the drying equipment of the different heat demands of hot-blast stove matching connection, and different intervals control modes are arranged, and improves susceptibility and the accuracy of the regulation of hot-blast stove quantity of heat given up；Using linear regulation mode, the heat of hot-blast stove is made to export and can seamlessly transit, heat output has better stability and accuracy.

Description

A kind of electric-control system and control method of hot-blast stove

Technical field

The present invention relates to a kind of automation electric control systems, electric-control system and control more particularly to a kind of hot-blast stove Method processed.

Background technique

China's foodstuff drying device accounts for 90% or more of disposable energy-output ratio using coal and oil as heat source at present, dries At high cost, incomplete combustion is done, heat loss is big；And the harmful substances such as sulfide there are many containing in coal-fired flue-gas, to big compression ring Border pollution is extremely serious.

Biomass thermal wind furnace uses biomass as fuel, and (it is organic that biomass here can be rice husk stalk, timber etc. Substance)；Since biomass is renewable energy, thus the effective use to waste is realized using biomass as fuel, and And the net discharge of the carbon dioxide after burning is zero, while the discharge amount of sulfide is also extremely low, so using biomass as heat The fuel of wind furnace had not only saved the energy but also environmentally friendly.

Electric-control system is the chief component of biomass thermal furnace system, the conventional automatically controlled system being applied on hot-blast stove System, can guarantee the normal operation of all parts, but can not achieve the automation of overall process.

In addition existing a kind of intelligent gasification furnace, although it is unstable to solve existing gasification furnace valve working low efficiency, firepower Fixed, fuel is unable to full combustion, is easy to cause gas leak, gaseous mixture air content problem of non-uniform, but this controlling party There are the following problems for method：

1, accurately linear variable frequency adjustment cannot be carried out according to the heat demand of drying equipment；

2, closed loop cannot can not be realized according to feedback states to the indoor combustion case Real-time Feedback state parameter that burns Control；

3, it may not apply to floated biomass-burning formula hot-blast stove.

Above-mentioned floated biomass-burning hot-blast stove uses suspension technology, and the indoor fuel of fuel can be made to be in suspension State.Fuel generated ashes after the burning in midair totally of hot-blast stove are fallen, and ashes are discharged in time, so that fuel Full combustion as much as possible.

Summary of the invention

The object of the invention is in order to solve above-mentioned problems of the prior art.

It is an object of the invention to a kind of electric-control system of the frequency converter institute output frequency of regulation load be proposed, at this It is provided with different frequency control modes in the automatic combustion module of electric-control system, and is further provided with frequency control module, The frequency control module uses linear regulation mode, the frequency that the frequency converter to regulate and control load is exported, linear tune here Control mode is corresponding with the frequency control mode that automatic combustion module is arranged；And according to the heat need of the drying equipment connected It asks, using the linear regulation mode in different sections, the susceptibility that is regulated and controled so as to improve heat of the hot-blast stove to output and accurate Degree.

It is another object of the invention to propose one kind can be to the indoor combustion case Real-time Feedback state parameter that burns Electric-control system, by the way that photosensitive sensor is arranged in the combustion chamber, to judge fuel combustion state, and after full combustion of fuel Ashes are then exhausted from, and realize the closed-loop control of the electric-control system according to feedback states；

Another object of the present invention is to propose a kind of automatically controlled system that can apply to floated biomass-burning formula hot-blast stove Hot-blast stove, is connect by system using communication connection with drying equipment, is realized with this to hot-blast stove and drying equipment overall-in-one control schema, from And the electric-control system can be applied to floated biomass-burning formula hot-blast stove.

It is another object of the present invention to propose a kind of control method of hot-blast stove, which can regulate and control the change of load The frequency that frequency device is exported.

In order to achieve the above object, the technical solution adopted by the present invention is：

A kind of electric-control system of hot-blast stove, including chaff room feeding control module, empty furnace pan feeding module, automatic combustion module, First stopping modular and frequency transformer control module；

The chaff room feeding control module enters chaff bucket for controlling fuel；

The sky furnace pan feeding module enters in combustion chamber for controlling fuel；

Different frequency control moulds is arranged for controlling the indoor fuel automatic combustion that burns in the automatic combustion module Formula；

First stopping modular is used to stop the load operation of the electric-control system；

The frequency transformer control module uses linear regulation mode, regulates and controls the frequency that the frequency converter of load is exported, described Linear regulation mode is corresponding with the frequency control mode that the automatic combustion module is arranged.

Further, the frequency transformer control module selects different tune according to the heat demand of the drying equipment connected Control mode.

Further, the linear regulation mode further includes test pattern, and the test pattern is controlled suitable for hot-blast stove The case where between cabinet and drying equipment control cabinet without connection data line, for make during detection calibration to hot-blast stove With.

Further, the frequency transformer control module is under different regulation and control models, according to the setting of the drying equipment Total temperature rise, the frequency converter of the load export different frequencies, and the frequency of the load and described set add up to temperature rise to be in line Sexual intercourse.

Further, under the test pattern, the frequency of the frequency converter output of the load and the air speed value of main air hose It is in a linear relationship.

Further, the linear regulation mode uses the linear regulation mode of Concourse Division.

Further, the frequency converter of the load include the frequency converter of smoke exhaust fan, combustion fan frequency converter, stirring sweep The frequency converter of grey motor and the frequency converter of chaff bucket discharging motor.

It further, further include the first photosensitive sensor and the second photosensitive sensor；First photosensitive sensor is used for Flame status is monitored, second photosensitive sensor is for monitoring ashes state.

It further, further include man-machine interface, the man-machine interface is used to show the exception information of hot-blast stove.

It further, further include prepurging module, the prepurging module is used to the ashes of the fuel after burning being drained into ash In cinder bucket.

It further, further include alarm module, the alarm module is used to issue alarm signal to the exception information of hot-blast stove Number.

It further, further include manual control module, the manual control module is used to control the negative of the electric-control system Carrying turns, adjusts the parameter of sensor and/or the parameter of the load of the adjustment electric-control system.

It further, further include emergent stopping module, the emergent stopping module is used for load and biography in electric-control system When sensor occurs abnormal, stop the electric-control system work.

It further, further include the second stopping modular, second stopping modular is connect with the chaff bucket discharging motor, is used It is operated in stopping the chaff bucket discharging motor.

Further, the hot-blast stove is floated hot-blast stove.

A kind of control method of the electric-control system of hot-blast stove, includes the following steps：

Upper level sensor and lower level sensor is arranged in chaff bucket feeding stage in chaff bucket, and level sensor is anti-instantly When feedback lacks material signal, system starts chaff room feed device to chaff bucket feeding；After upper level sensor feedback completely material signal, system Stop feeding；

Combustion chamber feeding stage, according to the heat demand of drying equipment, system is by preset frequency control mode to chaff bucket Discharging motor matches corresponding feeding frequency, and starts chaff bucket feeding fan and chaff bucket discharging motor, and chaff bucket feeding fan will fire Material is blowed to combustion chamber；

In the automatic combustion stage, the first photosensitive sensor confirmation hot-blast stove, which has been put, fights in combustion state, automatic combustion mould Formula brings into operation；According to the heat demand of drying equipment, system presses preset frequency control mode, regulates and controls the frequency converter of load, Carry out combustion process auto-control；

Stop the load operation stage, manually or automatically stops load operation；

Wherein, using linear regulation mode, regulate and control the frequency converter of the load, the linear regulation mode and described automatic The preset frequency control mode of combustion phases is corresponding；And when occurring abnormal, the different of hot-blast stove is shown by man-machine interface Normal information is simultaneously alarmed.

Further, the linear regulation mode is that the heat demand of the drying equipment connected according to hot-blast stove selects not Same regulation and control model.

Further, under the different regulation and control model, temperature rise is added up to according to the setting of the drying equipment, load Frequency converter exports different frequencies, and the frequency of the load adds up to temperature rise in a linear relationship with described set.

Further, the frequency converter of the regulation load includes：The frequency conversion of the frequency converter, combustion fan of chaff bucket discharging motor Device, the frequency converter of smoke exhaust fan and stirring sweep up dust the frequency converter of motor.

Further, further include the prepurging stage, ashes are delivered to by ash discharge by ash discharge auger switch and promote motor, it is described Ash discharge promotes motor and ashes is delivered in ashes bucket.

The beneficial effects of the invention are as follows：

1, frequency transformer control module of the invention can be according to the drying of the different heat demands of hot-blast stove institute matching connection Equipment selects different frequency converter regulation and control models, different intervals control modes is in addition arranged, to greatly increase hot wind The susceptibility and accuracy that furnace quantity of heat given up is regulated and controled；In addition each intervals control mode of the heat demand of drying equipment of the present invention Using linear regulation mode, the heat of hot-blast stove is made to export and can seamlessly transit in the way of linear regulation, but also heat Output has better stability and accuracy.

2, flame detection photosensitive sensor, the ashes detection photosensitive sensor being arranged in the present invention, passes through parameter algorithm energy The combustion state of the combustion chamber detected is enough fed back, and the frequency by regulating and controlling to stir the motor that sweeps up dust allows fuel to sufficiently fire It burns, is then exhausted from ashes after automatic combustion module judges full combustion of fuel；To ensure that fuel can full combustion, and fire It is not only energy saving but also environmentally friendly without soot emission after burning.

3, hot-blast stove is connect by the present invention using communication connection with drying equipment, is realized with this to hot-blast stove and drying equipment Overall-in-one control schema, so as to which the electric-control system is applied to floated biomass-burning formula hot-blast stove.

4, control method of the invention regulates and controls load according to the equipment of different heat demands using linear regulation mode Frequency converter, so that frequency converter exports different frequencies.

Detailed description of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the side view according to a kind of hot-blast stove of one embodiment of the present of invention；

Fig. 2 is the front view according to a kind of hot-blast stove of one embodiment of the present of invention；

Fig. 3 is the top view according to a kind of hot-blast stove of one embodiment of the present of invention；

Fig. 4 is a kind of structural schematic diagram of the electric-control system of one embodiment of hot-blast stove of the invention；

Fig. 5 A is the present invention a kind of frequency and dryer of the smoke exhaust fan of one embodiment of the electric-control system of hot-blast stove The total temperature rise of setting graph of relation；

Fig. 5 B is the present invention a kind of frequency and dryer of the combustion fan of one embodiment of the electric-control system of hot-blast stove The graph of relation of total temperature rise of setting；

Fig. 5 C is the present invention a kind of frequency and baking of the chaff bucket discharging motor of one embodiment of the electric-control system of hot-blast stove The graph of relation of total temperature rise of dry machine setting；

Fig. 5 D is that a kind of stirring of one embodiment of the electric-control system of hot-blast stove of the present invention sweeps up dust the frequency and chaff of motor The graph of relation of bucket discharging motor frequency；

Fig. 6 A is the present invention a kind of frequency and drying of the smoke exhaust fan of another embodiment of the electric-control system of hot-blast stove The graph of relation of the total temperature rise of the setting of machine

Fig. 6 B is the present invention a kind of frequency and drying of the combustion fan of another embodiment of the electric-control system of hot-blast stove The graph of relation of total temperature rise of machine setting；

Fig. 6 C be a kind of frequency of the chaff bucket discharging motor of another embodiment of the electric-control system of hot-blast stove of the present invention with The graph of relation of total temperature rise of dryer setting；

Fig. 6 D be a kind of stirring of another embodiment of the electric-control system of hot-blast stove of the present invention sweep up dust motor frequency and The graph of relation of chaff bucket discharging motor frequency；

Fig. 7 A is a kind of frequency of the smoke exhaust fan of another embodiment of the electric-control system of hot-blast stove of the present invention and main wind The graph of relation of the air speed value V of pipe；

Fig. 7 B is a kind of frequency of the combustion fan of another embodiment of the electric-control system of hot-blast stove of the present invention and main wind The graph of relation of the air speed value V of pipe；

Fig. 7 C be a kind of frequency of the chaff bucket discharging motor of another embodiment of the electric-control system of hot-blast stove of the present invention with The graph of relation of the air speed value V of main air hose；

Fig. 7 D is that a kind of stirring of another embodiment of the electric-control system of hot-blast stove of the present invention sweeps up dust electric machine frequency and chaff The graph of relation of bucket discharging motor frequency.

Specific embodiment

It is described below for the open present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious deformations.It defines in the following description Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back Other technologies scheme from the spirit and scope of the present invention.

It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment, The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no It can be interpreted as the limitation to quantity；Term " connection " is interpreted as " being wirelessly connected " or " wired connection ", and can be " directly Connection " is also possible to " being indirectly connected with ", that is, can be with and without other equipment between two to be connected equipment.

Term used herein is only used for describing the purpose of various embodiments and is not intended to limit.As used herein, Singular is intended to also include plural form, makes an exception unless the context clearly dictates.Will further be understood that term " includes " and/or " having " specifies depositing for the feature, number, step, operation, component, element or combinations thereof when being used in this specification , and it is not excluded for the presence or additional of one or more of the other feature, number, step, operation, component, element or its group.

Fig. 1, Fig. 2 and Fig. 3 are respectively the side view of hot-blast stove according to an embodiment of the invention a kind of, front view and bow View；As shown in Figure 1, Figure 2 and Figure 3, the lower end in chaff room 110 is provided with chaff room unloading rotary feeder 11, and wind is closed in chaff room discharging Fuel in chaff room 110 is discharged into feed pipe by device 11；Chaff room feeding fan 6 sends fuel in chaff bucket by feed pipe In 120, the lower end of chaff bucket 120 is provided with chaff bucket discharging blower 10, the chaff bucket discharging blower 10 make the fuel in chaff bucket 120 into Enter in chaff bucket bucket；Fuel in chaff bucket bucket is sent to combustion chamber 130 by chaff bucket feeding fan 5, and the lower end of combustion chamber 130 is provided with Pedestal blower 3 and combustion fan 2, the pedestal blower 3 are used to provide air to combustion chamber 130, and the combustion fan 2 is for mentioning For combustion air；The combustion chamber 130 is connect by fume pipe with the air inlet on the top of heat exchanger 140, on the fume pipe It is provided with flue gas exhaust connector exception overtemperature sensor 19, the top of the heat exchanger 140 is additionally provided with air outlet, should go out Cyclone dust collectors 150 are connected by air port by hot air duct with the heat exchanger 140, and the hot air duct is equipped with clear Clean hot-blast outlet temperature sensor 23 is provided with ash discharge feeding motor 7, the ash discharge feeding motor 7 in the side of combustion chamber 130 For the ash in combustion chamber 130 to be discharged, the top of combustion chamber 130 is provided with ash discharge and promotes motor 8, the ash discharge promotes electricity The ashes promotion of discharge is sent in ashes bucket 160 by machine 8, and the upper end of the cyclone dust collectors 150 is connected with cleaning shaft, should Cleaning shaft lower end is provided with smoke exhaust fan 1, and flue gas is discharged the smoke exhaust fan 1 by chimney.

Below to a kind of specific embodiment of the electric-control system of hot-blast stove of the invention will be illustrated in conjunction with attached drawing.

One, a kind of electric-control system of hot-blast stove

Fig. 4 is a kind of structural schematic diagram of the electric-control system of one embodiment of hot-blast stove of the invention, including chaff room is sent Expect control module, empty furnace pan feeding module, automatic combustion module, the first stopping modular and frequency transformer control module；

The chaff room feeding control module enters chaff bucket 120 for controlling fuel；

The sky furnace pan feeding module enters in combustion chamber 130 for controlling fuel；

The automatic combustion module is used to control the fuel automatic combustion in combustion chamber 130, and different frequency conversion controls is arranged Molding formula；

In the present embodiment, empty furnace pan feeding module, automatic combustion module, the first stopping modular and frequency transformer control module are all provided with Set in power control cabinet (being not shown in Fig. 1, Fig. 2 and Fig. 3), and chaff room feeding control module and the power control cabinet be it is separately positioned, The chaff room feeding control module can be connect with the power control cabinet with cable, and in the present embodiment, which may be configured as 30 meters；But It is not limited to this, in other embodiments, according to the actual situation, which may be alternatively provided as other length.

The specific work process of electric-control system of the invention will be described in detail below.

1, system initialization connects power control cabinet total power switch.

Power lights (green) in power control cabinet and stopping light (yellow) is bright lights simultaneously, smoke exhaust fan 1 operates；Work as Smoke After the operating of machine 1 reaches preset time (calling delay time in the following text), the detection blower 4 that stops working is operated；In the present embodiment, this is preset to prolong The slow time is set as 3 seconds, and but it is not limited to this, also may be set to other numerical value in other embodiments, preferably.

2, control fuel enters chaff bucket.

It is provided with upper level sensor and lower level sensor in chaff bucket 120, in the present embodiment, lower level sensor is Material position detection signal transducer 13 under chaff bucket, upper level sensor are material position detection signal transducer 14 on chaff bucket.

When material position detection signal transducer 13 detects 120 material deficiency of chaff bucket under chaff bucket, chaff room feeding control module hair Alarm signal out, automatic or manual open the chaff room feeding switch in chaff room feeding control module；Then, when chaff room feeding fan 6 operatings reach after predetermined time delay (in the present embodiment, which is also set to 3 seconds), chaff room unloading rotary feeder 11 start running.

When material position detection signal transducer 14 detects that the fuel in chaff bucket 120 reaches preset height on chaff bucket, chaff room Feeding control module issues alarm signal, and automatic or manual closes chaff room feeding switch, and the discharging of chaff room is then automatically closed and closes wind Device 11 is automatically closed chaff room and send after predetermined time delay (in the present embodiment, predetermined time delay here is set as 10 seconds) Expect blower 6.

3, control fuel enters in combustion chamber.

It is provided with button and indicator light in empty furnace pan feeding module in the present embodiment, it, should when which works Indicator light (green) is always on；After sky furnace pan feeding module work stops, which extinguishes.

The button in sky furnace pan feeding module is pressed, the indicator light (green) in empty furnace pan feeding module lights, this space-time furnace enters Expect that module is started to work, chaff bucket feeding fan 5 operates；When the operating of chaff bucket feeding fan 5 reaches preset delay time (this implementation In example, it is set as 3 seconds) after, chaff bucket discharging motor 10 operates；The chaff bucket discharging motor 10 operating reaches the preset duration of runs It stops working after (in the present embodiment, being set as 5 minutes)；After the chaff bucket discharging motor 10 stops, chaff bucket feeding fan 5 is further continued for It operates and reaches and (be set as 5 seconds in the present embodiment) after preset delay time and stop working, the finger of this space-time furnace pan feeding module Show that lamp extinguishes.

In order to guarantee safety, the temperature threshold of burner hearth temperature control temperature sensor 22 is set in advance, when burner hearth temperature control temperature passes When the temperature that sensor 22 is sensed is less than or equal to the temperature threshold, chaff bucket feeding fan 5 and chaff bucket discharging motor 10 it is normal Operating；When the temperature that burner hearth temperature control temperature sensor 22 is sensed is greater than the temperature threshold, in this space-time furnace pan feeding module The button of setting is in failure mode, and empty furnace pan feeding module does not work；In the present embodiment, the burner hearth temperature control temperature sensor of setting 22 temperature threshold is 80 DEG C；But it is not limited to this, and the temperature threshold of the burner hearth temperature control temperature sensor 22 also can be set as Other temperature.

4, the indoor fuel automatic combustion of control burning.

Button and indicator light are also equipped in automatic combustion module in the present embodiment, the indicator light of automatic combustion module State indicates the different conditions of fuel combustion, i.e.,：

Combustion state is normal-and the indicator light is always on；

The flashing of combustion state exception-indicator light；

Non-automatic combustion state-indicator light extinguishes.

The button being arranged in automatic combustion module is pressed, the indicator light in automatic combustion module lights, at this moment automatic combustion Module is started to work, each load (i.e. following ash discharges promoted motor 8, ash discharge feeding motor 7, pedestal blower 3, combustion fan 2, Chaff bucket feeding fan 5, chaff bucket discharging motor 10 and stirring sweep up dust motor 9) successively operating in the following order：

After the ash discharge promotion operating of motor 8 reaches preset delay time (in the present embodiment, being set as 3 seconds), ash discharge feeding After the operating of motor 7 reaches preset delay time (in the present embodiment, being set as 3 seconds), the operating of pedestal blower 3 reaches preset and prolongs After the slow time (in the present embodiment, being set as 3 seconds), the operating of combustion fan 2 reach preset delay time (in the present embodiment, if It is set to 3 seconds) after, after the operating of chaff bucket feeding fan 5 reaches preset delay time (in the present embodiment, being set as 3 seconds), chaff bucket is unloaded The material operating of motor 10 reaches preset delay time (in the present embodiment, being set as 3 seconds, and furnace temperature is greater than 130 DEG C in this implementation), Stir the operating of motor 9 that sweeps up dust.

In the present embodiment, smoke exhaust fan is operated close to whether the belt that switch 12 is used to detect smoke exhaust fan 1 is broken.It is arranging It is provided with first device on the passive pulley shaft of cigarette blower 1, within the preset detection waiting time, smoke exhaust fan operating is close to be opened The variation of the first device can be sensed by closing 12, and generate switch change signal；The switch change signal can be for transmission to report Alert module, and the exception information of generation is shown on a display screen, switch change signal here refers to that smoke exhaust fan operating connects The pulse signal that nearly switch 12 is sensed in preset distance range；

Within the preset detection waiting time, when the follower of smoke exhaust fan 1 normally rotates, smoke exhaust fan operating is close Switch 12 can sense pulse signal in preset distance range, indicate that smoke exhaust fan 1 is in normal operation；Work as smoke evacuation When blower operating does not sense pulse signal in preset distance range close to switch 12, display screen can show smoke evacuation at this time Detection exception information is turned round, indicates that the belt of smoke exhaust fan 1 is broken；In the present embodiment, first device may be configured as dentation, In other embodiments, first device of the invention may be set to be the device of other shapes；In the present embodiment, preset inspection Surveying the waiting time is 60 seconds, and in other embodiments, which may be set to be other durations.

Ash discharge screw feeder is operated close to switch 24 and is sent for detecting ash discharge auger (being not shown in Fig. 1, Fig. 2 and Fig. 3) with ash discharge Whether the driving chain of material motor 7 is broken.In the quilt of ash discharge auger (being not shown in Fig. 1, Fig. 2 and Fig. 3) and ash discharge feeding motor 7 It is provided with second device on movable sprocket axis, within the preset detection waiting time, ash discharge screw feeder is operated can incude close to switch 24 To the variation of the second device, and generate switch change signal, the switch change signal can also for transmission to alarm module, and The exception information of generation is shown on a display screen, switch change signal here refers to that ash discharge screw feeder is operated and exists close to switch 24 The pulse signal sensed in preset distance range；

Within the preset detection waiting time, when ash discharge auger (Fig. 1, Fig. 2 and Fig. 3) and ash discharge feeding motor 7 normally revolve When turning, ash discharge screw feeder is operated close to switch 24 can sense pulse signal in preset distance range, indicate ash discharge auger (figure 1, Fig. 2 and Fig. 3) with ash discharge feeding motor 7 be in normal operation；When ash discharge screw feeder operate close to switch 24 it is preset away from When from not sensing pulse signal in range, display screen can show that detection exception information is turned round in ash discharge at this time, indicate that ash discharge twists Imperial (Fig. 1, Fig. 2 and Fig. 3) and the chain of ash discharge feeding motor 7 are broken；In the present embodiment, second device may be configured as tooth Shape, in other embodiments, second device of the invention may be set to be the device of other shapes；In the present embodiment, preset The detection waiting time be 60 seconds, in other embodiments, which may be set to be other durations.

Preferably, which includes the first photosensitive sensor 17 and the second photosensitive sensor 18, and described first is photosensitive Sensor 17 is used to monitor the light signal of flame status, and second photosensitive sensor 18 is used to monitor the light news of ashes state Number, the combustion state detected can be fed back by parameter algorithm.

Flue gas exhaust connector exception overtemperature sensor 19 is used to detect the flue-gas temperature of fume pipe, when it is sensed Temperature be less than or equal to preset temperature threshold when, automatic combustion module work；When the temperature that it is sensed is in preset temperature When threshold value, system will issue abnormal alarm signal, show to break down.In the present embodiment, which is 320 DEG C, In other embodiments, which may be set to be other temperature；Here failure includes heat exchanger air inlet Situations such as no cold wind enters；If not carrying out human intervention within the set time or failure not being excluded, system can autostop； In the present embodiment, the time set as 3 minutes, in other embodiments, can also set other times.

Permeability cell exception overtemperature sensor 20 is for detecting the explosion-proof outlet temperature of permeability cell, when the temperature that it is sensed When degree is less than or equal to preset temperature threshold, the work of automatic combustion module；When the temperature that it is sensed is greater than preset temperature threshold When value, system issues abnormal alarm signal, indicates that pressure in the burner hearth is excessive；In the present embodiment, which is 500 DEG C, in other embodiments, which may be set to be other temperature；If do not carried out within the set time Human intervention or failure are not excluded, and system can autostop；In the present embodiment, the time set as 3 minutes, other implementation In example, other times can also be set.

Ash bucket exception overtemperature sensor 21, for detecting the temperature for the ashes being discharged from combustion chamber, when it is felt The temperature measured is less than or equal to preset temperature threshold constantly, the work of automatic combustion module；When the temperature that it is sensed is greater than in advance If temperature threshold when, system issues abnormal alarm signal, indicates that stirring 9 operating frequency of motor that sweeps up dust is excessively high, shows that system goes out Wrong or ashes detection photosensitive sensor 18 breaks down；In the present embodiment, which is 270 DEG C, in other implementations In example, which may be set to be other temperature；If not carrying out human intervention or failure within the set time It is not excluded, system can autostop；In the present embodiment, the time set as 3 minutes, in other embodiments, can also be set Determine other times.

The earthquake detector ball of ground Vibration induction detection signal transducer 25 is used to detect whether ground is in horizontality, When the earthquake detector ball is in reset state, when indicating that hot-blast stove is at a normal level state；Otherwise illustrate hot-blast stove not in level State, need to check whether ground occurs problem.

Automatic combustion module in the present embodiment can preset two kinds of frequency control modes, according to setting in hot-blast stove electricity The drying equipment for the different heat demands that data bus connection between control cabinet and drying equipment control cabinet is connected, the automatic combustion mould Block selection mode one and mode two (the automatic combustion module also can choose more modes).

Further, it can also include test pattern, there is no connection number between hot-blast stove control cabinet and dryer control cabinet According to selection mode three when line, mode three is only used for hot-blast stove and individually burns machine examination heater stage.It hereinafter will be to these three modes It is described in detail.

5, stop the load operation of electric-control system.

It is again provided with button and indicator light on the first stopping modular in the present embodiment, the state of the indicator light indicates each The different working condition of load：

- the indicator light (yellow) extinguishing is supported in stopped process；

The flashing of the failure-indicator light is met in load；

Load stops working-is somebody's turn to do, and the indicator light is always on.

The button being arranged on the first stopping modular is pressed, (load here is for each load：Chaff bucket discharging motor 10, chaff bucket Sweep up dust motor 9, ash discharge feeding motor 7 and the ash discharge of feeding motor 5, combustion fan 2, stirring promotes motor 8) stopping sequence is successively such as Under：

The operating of chaff bucket discharging motor 10 stops working after reaching preset delay time (being 3 seconds in the present embodiment)；The chaff After bucket discharging motor 10 stops, chaff bucket feeding motor 5 remains in operation reach preset delay time (in the present embodiment for 3 seconds) after Stop working, combustion fan 2 remains in operation reach preset delay time (in the present embodiment for 3 seconds) after stop working, stir The motor 9 that sweeps up dust remains in operation reach preset delay time (in the present embodiment for 3 seconds) after stop working, ash discharge feeding motor 7 It remains in operation and stops working after reaching preset delay time (being 3 seconds in the present embodiment), then ash discharge promotes motor 8 and stops, When furnace temperature is less than or equal to preset temperature threshold, last pedestal blower 3 is automatically stopped work；Furnace temperature is higher than preset temperature threshold When value, pedestal blower 3 is operated.In the present embodiment, preset temperature threshold is 125 DEG C, in other embodiments, the preset temperature Degree threshold value may be set to be other temperature.

In addition when the drying equipment of connection (i.e. heat source demand equipment) is all shut down, the first stopping modular can start building certainly Make, such hot-blast stove can be automatically stopped；Or when hot-blast stove breaks down, the first stopping modular also can automatic work, thus So that hot-blast stove stops working.

Preferably, in another embodiment, electric-control system can also include man-machine interface, and man-machine interface here can be Display screen, the display screen can be touch screen, allow user directly to input information on the display screen, and receive user to touch The various instructions that mode inputs.It is similar with previous embodiment, after system initialization, connect power control cabinet total power switch, power control cabinet On power lights (green) and stopping light (yellow) is bright lights simultaneously, display screen is turned at this time, and smoke exhaust fan 1 operates；Work as row After the operating of cigarette blower 1 reaches preset time (calling delay time in the following text), the detection blower 4 that stops working is operated；In the present embodiment, this is default Delay time be set as 3 seconds, but it is not limited to this, also may be set to other numerical value in other embodiments.

Display screen in the present embodiment be used to show hot-blast stove exception information and coding corresponding with the exception information, The exception information may include：Chaff bucket feeding fan 5 overloads；Chaff bucket discharging motor 10 is abnormal；Combustion fan 2 is abnormal；Ash discharge Feeding motor 7 is overloaded；It is abnormal to stir the motor 9 that sweeps up dust；Pedestal blower 3 is abnormal；Smoke exhaust fan 1 is abnormal；Sweep up dust bucket (i.e. ash discharge feeding The shell of motor 7) exception overheat；Layer of smouldering is abnormal；Chaff bucket is under feeding；Chaff room feeding fan 6 overloads；Chaff room discharging motor 11 Overload；It is flame-out；Ash discharge revolution (operates using ash discharge screw feeder close to whether the chain that switch 24 detects ash discharge motor is broken) inspection Know exception；Smoke exhaust rotary (operates with smoke exhaust fan close to whether the driving belt that switch 12 detects smoke exhaust fan 1 is broken) inspection Know exception；Flame-out detection blower 4 is abnormal；Permeability cell overheat extremely (utilizes permeability cell exception overtemperature sensor 20 to be used for Detect the explosion-proof outlet temperature of permeability cell)；Heat exchanger overheats extremely；Abnormal vibrations (are sensed with ground Vibration induction detection signal Device 25 detects whether entire hot-blast stove is abnormal vibration)；Furnace pressure is abnormal；Ashes bucket is completely measured；Main air hose is (in Fig. 1, Fig. 2 and Fig. 3 It is not shown) temperature is excessively high (detecting the temperature of main air hose with cleaning hot-blast outlet temperature sensor 23)；Drying equipment temperature rise is (i.e. In the case where hot-blast stove and drying equipment line, temperature rise data can be transferred to hot-blast stove by drying equipment, when total temperature rise is small When secure setting, electric-control system can get the insufficient signal of drying equipment temperature rise).

As a result, in the present embodiment, the different of hot-blast stove and/or drying equipment can determine whether according to the exception information that display screen is shown Reason condition establishes the parameter feedback to the exception information of load, so as to form closed-loop control；Realizing the negative of electric-control system Carry automated operation while, additionally it is possible to monitor the working condition of each load in real time, and execute relevant action (including close electricity Source, alarm, feedback and the movement such as record fault message), not only realize the automation of each load operation in this way, while can be with It is in the presence of being monitored to each load, and according to the exception information monitored, executes feedback response movement, ensure that machine The safety and reliability of operation.

In other embodiments, man-machine interface of the invention also may include the other types such as keyboard, microphone, handwriting pad Input unit, with realized using various types of input modes such as keyboard input, voice input, handwriting inputs instruction it is defeated Enter.

Preferably, the present embodiment further includes alarm module, may be provided with button on the alarm module.According to above-mentioned display Shield the exception information monitored, which issues alarm signal, when getting alarm signal, presses setting in alarm mould Button on block cuts off the total power switch of power control cabinet, (in the present embodiment, preset time is 3 seconds), weight after preset time The new total power switch for opening power control cabinet.

Smoke exhaust fan in the present embodiment is operated close to material position detection signal transducer 13, rice husk under switch 12, rice husk bucket Material position detection signal transducer 14 on bucket, material position detection signal transducer 15, pedestal fan pressure detection signal pass on ashes bucket Sensor 16, flame detection photosensitive sensor 17, ashes detection photosensitive sensor 18, flue gas exhaust connector exception overtemperature sensing Device 19, permeability cell exception overtemperature sensor 20, ash bucket exception overtemperature sensor 21, burner hearth temperature control temperature sensor 22, hot-blast outlet temperature sensor 23 is cleaned, ash discharge screw feeder is operated close to switch 24, ground Vibration induction detection signal transducer 25, furnace pressure signal transducer 26, air velocity transducer 28, environment temperature/humidity sensor 29, these sensors of setting are for examining It surveys above exception information that electric-control system occurs and forms closed-loop control to establish the feedback of multiple parameters；It is not only real The automated operation of the invention respectively loaded is showed, and the unusual condition occurred to each load is monitored, and information is exported It to man-machine interface and alarms, so as to positive feedback response action, ensure that the safety of electric-control system operation of the invention And reliability.In addition when the sensor occurs abnormal, the automatic combustion module of electric-control system will execute shutdown procedure automatically, The electric-control system will stop working.

Preferably, one more embodiment of the present invention further includes prepurging module, which is also disposed at power control cabinet (figure 1, it is not shown in Fig. 2 and Fig. 3) in, the prepurging module is used to for the ashes of the fuel after burning being drained into ashes bucket 160, In this embodiment, it is also equipped with button and indicator light in prepurging module, the state of the indicator light (green) indicates related load Different working condition：

Related load in operation-indicator light (green) is always on；

Related load operating terminates-indicator light extinguishing).

Press the button being arranged in prepurging module, each load (i.e. following ash discharges promoted motor 8, ash discharge feeding motor 7, Pedestal blower 3 and stirring sweep up dust motor 9) successively sequence of operation it is as follows：

Firstly, the ash discharge promotion operating of motor 8 reaches predetermined time delay, (in the present embodiment, which is set It is 3 seconds) after；Secondly, the operating of ash discharge feeding motor 7 reaches predetermined time delay, (in the present embodiment, which is also set It is set to 3 seconds) after；Again, the operating of pedestal blower 3 reaches predetermined time delay (in the present embodiment, which is also set It is 3 seconds) after；Then, the operating of motor 9 that sweeps up dust is stirred.

In the present embodiment, manual stopping mode being taken and/or be automatically stopped mode to stop the work of prepurging module；If Stop mode using manual, then after pressing stop button, stirs the motor 9 that sweeps up dust, pedestal blower 3, ash discharge feeding motor 7 and row Ash, which promotes motor 8, successively to be stopped；According to the mode that is automatically stopped, then prepurging module automatically will sweep stirring in a preset time Grey motor 9, pedestal blower 3, ash discharge feeding motor 7 and ash discharge promote motor 8 and successively stop, in the present embodiment, the preset time It is 30 minutes, but the invention is not restricted to this, also can be set as other durations.

In another embodiment of the invention, it can also be provided with manual control module in the electric-control system, in touch-control On screen input information (such as：Password), manual control module is entered, which can individually control each load (load here is：Smoke exhaust fan 1, combustion fan 2, pedestal blower 3, flame-out detection blower 4, chaff bucket feeding fan 5, chaff room Feeding fan 6, ash discharge feeding motor 7, ash discharge promote motor 8, stir sweep up dust motor 9, chaff bucket discharging motor 10 and the discharging of chaff room Airlock 11 etc.) operating.

The manual control module can also adjust set each sensor (sensor here as：Smoke exhaust fan operating is close Material position detection signal transducer 13 under switch 12, rice husk bucket, material position detection signal transducer 14 on rice husk bucket, material position on ashes bucket Detection signal transducer 15, pedestal fan pressure detection signal transducer 16, flame detection photosensitive sensor 17, ashes detection light Dependent sensor 18, flue gas exhaust connector exception overtemperature sensor 19, permeability cell exception overtemperature sensor 20, ash bucket Abnormal overtemperature sensor 21, burner hearth temperature control temperature sensor 22, cleaning hot-blast outlet temperature sensor 23, ash discharge screw feeder fortune Switching nearly switch 24, ground Vibration induction detection signal transducer 25, furnace pressure transducing signal sensor 26,28 and of air velocity transducer Environment temperature/humidity sensor 29 etc.) control parameter and associated transducer (change of smoke exhaust fan 1 is referred in the present embodiment Frequency device, combustion fan 2 frequency converter, stirring sweep up dust motor 9 frequency converter and chaff bucket discharging motor 10 frequency converter) control ginseng Number.

Further include emergent stopping module in yet another embodiment of the present invention, is provided in the emergent stopping module Emergency stop button, when appearance exceptions such as the loads and each sensor for detecting hot-blast stove, can press the emergent stopping by Button, the wholly off work of each component of such hot-blast stove.

It in another embodiment of the present invention, further include the second stopping modular, second stopping modular is for stopping chaff The operating of bucket discharging motor 10.

The above each control module being arranged in electric-control system of the invention is (i.e.：Alarm module, the feeding of chaff room control mould Block, automatic combustion module, the first stopping modular, prepurging module, frequency transformer control module, manually controls mould at empty furnace pan feeding module Block, emergent stopping module and the second stopping modular), different working condition and operational requirements can be coped with, be provided with from Dynamic combustion module can guarantee normal production and application, and combustion process is enabled to automate progress, each control module of setting So that the overall process of the electric-control system realizes automation control, intelligence degree is high, also improves the reliability of operation, and save Manpower is saved.

The pedestal blower 3 used in above-described embodiment is saturating Pu formula pedestal blower, but the present invention is not limited to use saturating Pu Formula pedestal blower can also use other kinds of pedestal blower, such as low pressure centrifugal blower.

Two, the different regulation and control models of frequency transformer control module

Frequency transformer control module of the invention can correspondingly be selected according to operating mode preset in automatic combustion module Select different regulation and control models.

The different regulation and control models of frequency transformer control module, mode one and mode two are described below with three specific examples It is the drying equipment for the different heat demands that frequency control module is connected according to data line come the different working modes of selection；Mould For formula third is that without connection data line between hot-blast stove control cabinet and drying equipment control cabinet, this mode is only used for independent burning machine examination Heater stage.

To debug hot-blast stove ahead of time, and debug time is reduced, can choose above-mentioned mode three, independent burning machine here tries furnace Stage refers to debugging stage of the hot-blast stove before life's work, (i.e. to use pattern during hot-blast stove progress detection calibration Three), for preferably detecting the performance of hot-blast stove.

Drying equipment in the present embodiment is dryer, the setting of dryer described below add up to temperature rise=| dryer Setting drying temperature-environment temperature | the number of units of × drying regime dryer.

1, frequency transformer control module regulation and control model one.

In the present embodiment, data bus connection matches 15 tonnage dryers, and Fig. 5 A is the Smoke of one embodiment of the present of invention The graph of relation of the frequency of machine and the total temperature rise of the setting of dryer, by Fig. 5 A as it can be seen that the setting in dryer adds up to temperature rise At >=160 DEG C, smoke exhaust fan 1 is operated with 60HZ；When 40 DEG C of < set total 160 DEG C of temperature rise <, the frequency of smoke exhaust fan 1 with It is in a linear relationship to set total temperature rise；When setting total temperature rise=40 DEG C, smoke exhaust fan 1 is operated with 15HZ；Set total temperature rise At 40 DEG C of <, alarm module feeds back abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 5 B is the relationship song of the combustion fan frequency of one embodiment of the present of invention and total temperature rise of dryer setting Line chart, by Fig. 5 B as it can be seen that combustion fan 2 is operated when the setting of dryer adds up to temperature rise >=160 DEG C with 50HZ；In 40 DEG C of < When setting total 160 DEG C of temperature rise <, the frequency of combustion fan 2 and the total temperature rise of setting are in a linear relationship；The total temperature rise of setting= At 40 DEG C, combustion fan 2 is operated with 15HZ；When setting total 40 DEG C of temperature rise <, alarm module feeds back abnormal alarm signal, this When, automatic combustion cannot be opened.

Fig. 5 C is the pass of the chaff bucket discharging motor frequency of one embodiment of the present of invention and total temperature rise of dryer setting It is curve graph, by Fig. 5 C as it can be seen that chaff bucket discharging motor 10 is operated when the setting of dryer adds up to temperature rise >=160 DEG C with 50HZ； 40 DEG C of < set total temperature rise at 160 DEG C of <, and the frequency of chaff bucket discharging motor 10 and the total temperature rise of setting are in a linear relationship；If Surely when total temperature rise=40 DEG C, chaff bucket discharging motor 10 is operated with 10HZ；When setting total 40 DEG C of temperature rise <, alarm module feedback Abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 5 D is that the stirring of one embodiment of the present of invention sweeps up dust the relationship song of electric machine frequency and chaff bucket discharging motor frequency Line chart, by Fig. 5 D as it can be seen that stirring the frequency 9 for the motor that sweeps up dust in the frequency < 50HZ operating of 10HZ < chaff bucket discharging motor 10 It is in a linear relationship with the frequency of chaff bucket discharging motor 10；When frequency=50HZ of chaff bucket discharging motor 10, the motor 9 that sweeps up dust is stirred Frequency is 50HZ；When frequency=10HZ of chaff bucket discharging motor 10, the frequency for stirring the motor 9 that sweeps up dust is 10HZ.

2, frequency transformer control module regulation and control model two.

In the present embodiment, data bus connection matches 30 tonnage dryers, and Fig. 6 A is the smoke evacuation of another embodiment of the invention The graph of relation of the frequency of blower and the total temperature rise of the setting of dryer, by Fig. 6 A as it can be seen that the setting in dryer adds up to temperature When rising >=100 DEG C, smoke exhaust fan 1 is operated with 60HZ；When 20 DEG C of < set total 100 DEG C of temperature rise <, the frequency of smoke exhaust fan 1 Total temperature rise is in a linear relationship with setting；When setting total temperature rise=20 DEG C, smoke exhaust fan 1 is operated with 15HZ；The total temperature of setting When rising 40 DEG C of <, alarm module feeds back abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 6 B is the pass of the total temperature rise of setting of the frequency and dryer of the combustion fan of another embodiment of the invention It is curve graph, by Fig. 6 B as it can be seen that combustion fan 2 is operated when the setting of dryer adds up to temperature rise >=100 DEG C with 50HZ；20 When DEG C < is set between total 100 DEG C of temperature rise <, the frequency of combustion fan 2 and setting add up to temperature rise in a linear relationship；Setting is closed When counting temperature rise=20 DEG C, combustion fan 2 is operated with 15HZ；When setting total 20 DEG C of temperature rise <, alarm module feeds back abnormal alarm Signal, at this point, automatic combustion cannot be opened.

Fig. 6 C is that the frequency of the chaff bucket discharging motor of another embodiment of the invention and the setting of dryer add up to temperature rise Graph of relation, by Fig. 6 C as it can be seen that dryer setting add up to temperature rise >=100 DEG C when, chaff bucket discharging motor 10 is with 50HZ Operating；When 20 DEG C of < set total 100 DEG C of temperature rise <, the frequency of chaff bucket discharging motor 10 is linearly closed with total temperature rise is set System；When setting total temperature rise=20 DEG C, chaff bucket discharging motor 10 is operated with 10HZ；When setting total 20 DEG C of temperature rise <, mould of alarming Block feeds back abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 6 D is that the stirring of another embodiment of the invention sweeps up dust the relationship of electric machine frequency and chaff bucket discharging motor frequency Curve graph stirs the frequency for the motor 9 that sweeps up dust by Fig. 6 D as it can be seen that when the frequency < 50HZ of 10HZ < chaff bucket discharging motor 10 is operated It is in a linear relationship with the frequency of chaff bucket discharging motor 10；When frequency=50HZ of chaff bucket discharging motor 10, the motor 9 that sweeps up dust is stirred Frequency is 50HZ；When frequency=10HZ of chaff bucket discharging motor 10, the frequency for stirring the motor 9 that sweeps up dust is 10HZ.

3, frequency transformer control module regulation and control model three.

Fig. 7 A is the relation curve of the frequency of the smoke exhaust fan of another embodiment of the invention and the air speed value V of main air hose Figure, by Fig. 7 A as it can be seen that when air speed value V >=15 meter per second of main air hose, smoke exhaust fan 1 is operated with 60HZ；The air speed value 2 of main air hose When meter per second≤V 15 meter per second of <, the frequency of smoke exhaust fan 1 and the air speed value of main air hose are in a linear relationship；The air speed value 1 of main air hose When meter per second≤V 2 meter per second of <, smoke exhaust fan 1 is operated with 15HZ；When air speed value V 1 meter per second of < of main air hose, alarm module feedback Abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 7 B is the relation curve of the frequency of the combustion fan of another embodiment of the invention and the air speed value V of main air hose Figure, by Fig. 7 B as it can be seen that combustion fan 2 is operated in air speed value V >=15 meter per second of main air hose with 50HZ；The air speed value of main air hose When 2 meter per seconds≤15 15 meter per second of meter per second of V <, the frequency of combustion fan 2 and the air speed value V of main air hose are in a linear relationship；Main air hose 1 meter per second of air speed value≤V 2 meter per second of < when, combustion fan 2 is operated with 15HZ；When air speed value V 1 meter per second of < of main air hose, report Alert module feedback abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 7 C is the relationship of the frequency of the chaff bucket discharging motor of another embodiment of the invention and the air speed value V of main air hose Curve graph, by Fig. 7 C as it can be seen that in air speed value V >=15 meter per second of main air hose, chaff bucket discharging motor 10 is operated with 50HZ；Main wind When 2 meter per seconds of air speed value of pipe≤15 15 meter per second of meter per second of V <, the frequency of chaff bucket discharging motor 10 is in the air speed value V of main air hose Linear relationship；When 1 meter per second of air speed value of main air hose≤V 2 meter per second of <, chaff bucket discharging motor 10 is operated with 10HZ；Main air hose When air speed value V 1 meter per second of <, alarm module feeds back abnormal alarm signal, at this point, automatic combustion cannot be opened.

Fig. 7 D is that the stirring of another embodiment of the invention sweeps up dust the relationship of electric machine frequency and chaff bucket discharging motor frequency Curve graph stirs the frequency for the motor 9 that sweeps up dust by Fig. 7 D as it can be seen that when the frequency < 50HZ of 10HZ < chaff bucket discharging motor 10 is operated It is in a linear relationship with the frequency of chaff bucket discharging motor 10；When frequency=50HZ of chaff bucket discharging motor 10, the motor 9 that sweeps up dust is stirred Frequency is 50HZ；When frequency=10HZ of chaff bucket discharging motor 10, the frequency for stirring the motor 9 that sweeps up dust is 10HZ.

Main air hose air speed value in the present embodiment is the data-signal inputted by air velocity transducer, which is not moment wind Speed, but the mean wind speed data in certain period of time will be set as 30 seconds in the present embodiment, but be not limited to the period This, also may be set to other numerical value.

According to the above description, drying equipment of the present invention according to the different heat demands of hot-blast stove institute matching connection, this hair The different frequency converter regulation and control models of bright frequency transformer control module selection, since the heat output using different sections adjusts mould Formula, to improve susceptibility and the accuracy of heat output regulation；In addition the shaping modes that the present invention uses are linear regulations, So that heat output quantity can seamlessly transit, but also heat output quantity has better stability and accuracy.

Three, a kind of control method of hot-blast stove

According to one embodiment of present invention, it is also proposed that a kind of control method of hot-blast stove,

Stop the load operation stage, stops order and interval duration by preset load, stop load operation；

Further, the control method further includes the prepurging stage, is switched by ash discharge auger ashes being delivered to ash discharge Motor is promoted, the ash discharge promotes motor and ashes are delivered in ashes bucket.

Control method in the present embodiment and the specific work process of above-mentioned electric-control system are almost the same, no longer superfluous herein It states.

In conclusion the invention proposes a kind of electric-control systems, wherein being arranged in the automatic combustion module of electric-control system Different frequency control modes, and frequency transformer control module is further set in electric-control system, which adopts The frequency exported with the frequency converter that linear regulation mode adjusting loads, the linear regulation mode and the setting of automatic combustion module Frequency control mode is corresponding；Photosensitive sensor is also set in the combustion chamber, to examine fuel combustion state；

In addition hot-blast stove is connect by the present invention using communication connection with drying equipment, is realized with this and is set to hot-blast stove and drying Standby overall-in-one control schema, so as to which the electric-control system is applied to floated biomass-burning formula hot-blast stove.

The invention also provides a kind of control methods of the electric-control system of hot-blast stove, wherein being adjusted using linear regulation mode The frequency that the frequency converter of control load is exported.

Therefore, present invention obtains following beneficial effects：

Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention Shape all should fall within the scope of protection of the appended claims of the present invention.

Claims

1. a kind of electric-control system of hot-blast stove, including chaff room feeding control module, empty furnace pan feeding module, automatic combustion module, the One stopping modular and frequency transformer control module；

Different frequency control modes is arranged for controlling the indoor fuel automatic combustion that burns in the automatic combustion module；

The frequency transformer control module uses linear regulation mode, regulates and controls the frequency that the frequency converter of load is exported, described linear Regulation and control model is corresponding with the frequency control mode that the automatic combustion module is arranged.

2. electric-control system according to claim 1, which is characterized in that the frequency transformer control module is according to the baking connected The heat demand of dry equipment selects different regulation and control models.

3. electric-control system according to claim 1, which is characterized in that the linear regulation mode further includes test pattern, The test pattern be suitable between hot-blast stove control cabinet and drying equipment control cabinet without connection data line the case where, for pair Hot-blast stove use during detection calibration.

4. electric-control system according to claim 2, which is characterized in that the frequency transformer control module is in different regulation moulds Under formula, temperature rise is added up to according to the setting of the drying equipment, the frequency converter of the load exports different frequencies, the load Frequency adds up to temperature rise in a linear relationship with described set.

5. electric-control system according to claim 3, which is characterized in that under the test pattern, the frequency conversion of the load The frequency of device output and the air speed value of main air hose are in a linear relationship.

6. electric-control system according to claim 1-5, which is characterized in that the linear regulation mode uses section The linear regulation mode of segmentation.

7. electric-control system according to claim 1-5, which is characterized in that the frequency converter of the load includes smoke evacuation The frequency converter of blower, the frequency converter of combustion fan, stirring sweep up dust the frequency converter of motor and the frequency converter of chaff bucket discharging motor.

8. electric-control system according to claim 1, which is characterized in that further include the first photosensitive sensor and the second photosensitive biography Sensor；First photosensitive sensor is for monitoring flame status, and second photosensitive sensor is for monitoring ashes state.

9. electric-control system according to claim 1, which is characterized in that further include man-machine interface, the man-machine interface is used for Show the exception information of hot-blast stove.

10. electric-control system according to claim 1, which is characterized in that further include prepurging module, the prepurging module is used for The ashes of fuel after burning are drained into ashes bucket.

11. electric-control system according to claim 9, which is characterized in that further include alarm module, the alarm module is used for Alarm signal is issued to the exception information of hot-blast stove.

12. electric-control system according to claim 1, which is characterized in that it further include manual control module, it is described to manually control Module is used to control the negative of the load operation of the electric-control system, the parameter for adjusting sensor and/or the adjustment electric-control system The parameter of load.

13. electric-control system according to claim 1, which is characterized in that further include emergent stopping module, the emergent stopping Module is used to stop the electric-control system work when the load of electric-control system and sensor occur abnormal.

14. electric-control system according to claim 1, which is characterized in that further include the second stopping modular, described second stops Module is connect with the chaff bucket discharging motor, for stopping the chaff bucket discharging motor operating.

15. electric-control system according to claim 1, which is characterized in that the hot-blast stove is floated hot-blast stove.

16. a kind of control method of the electric-control system of hot-blast stove, includes the following steps：

Upper level sensor and lower level sensor is arranged in chaff bucket feeding stage in chaff bucket, and level sensor feedback lacks instantly When expecting signal, system starts chaff room feed device to chaff bucket feeding；After upper level sensor feedback completely material signal, system stops Feeding；

Combustion chamber feeding stage, according to the heat demand of drying equipment, system is by preset frequency control mode to chaff bucket discharging Motor matches corresponding feeding frequency, and starts chaff bucket feeding fan and chaff bucket discharging motor, and chaff bucket feeding fan blows fuel It send to combustion chamber；

In the automatic combustion stage, the first photosensitive sensor confirmation hot-blast stove, which has been put, fights in combustion state, and automatic combustion mode is opened Begin to run；According to the heat demand of drying equipment, system presses preset frequency control mode, regulates and controls the frequency converter of load, makes to fire Burning process auto-control carries out；

Wherein, using linear regulation mode, regulate and control the frequency converter of the load, the linear regulation mode and the automatic combustion Stage, preset frequency control mode was corresponding；And when occurring abnormal, show that the abnormal of hot-blast stove is believed by man-machine interface It ceases and alarms.

17. control method according to claim 16, which is characterized in that the linear regulation mode is according to hot-blast stove institute The heat demand of the drying equipment of connection selects different regulation and control models.

18. control method according to claim 16, which is characterized in that the linear regulation mode further includes test mould It the case where formula, the test pattern is suitable between hot-blast stove control cabinet and drying equipment control cabinet without connection data line, uses It is used during carrying out detection calibration to hot-blast stove.

19. control method according to claim 17, which is characterized in that under the different regulation and control model, according to institute The setting for stating drying equipment adds up to temperature rise, and the frequency converter of load exports different frequencies, the frequency of the load and the setting Total temperature rise is in a linear relationship.

20. control method according to claim 18, which is characterized in that under the test pattern, the change of the load The frequency of frequency device output and the air speed value of main air hose are in a linear relationship.

21. the described in any item control methods of 6-20 according to claim 1, which is characterized in that the linear regulation mode uses The linear regulation mode of Concourse Division.

22. control method according to claim 16, which is characterized in that it is described regulation load frequency converter include：Chaff bucket The frequency converter of discharging motor, the frequency converter of combustion fan, the frequency converter of smoke exhaust fan and stirring sweep up dust the frequency converter of motor.

23. control method according to claim 16, which is characterized in that further include the prepurging stage, opened by ash discharge auger It closes and ashes is delivered to ash discharge promotion motor, the ash discharge promotes motor and ashes are delivered in ashes bucket.