CN112295328A - Ash removal device of intelligent dust removal system and control method thereof - Google Patents
Ash removal device of intelligent dust removal system and control method thereof Download PDFInfo
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- CN112295328A CN112295328A CN202011041395.1A CN202011041395A CN112295328A CN 112295328 A CN112295328 A CN 112295328A CN 202011041395 A CN202011041395 A CN 202011041395A CN 112295328 A CN112295328 A CN 112295328A
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- air outlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention relates to an ash removal device of an intelligent dust removal system and a control method thereof. The ash removal device comprises a plurality of filter bags, an air storage tank, a pressure pipeline, an air distribution box, an electromagnetic pulse valve, a blowing pipe, a plurality of nozzles, an ash removal bin with an air outlet, a shutter and a control module. The shutter comprises a cover plate corresponding to the air outlet, a main driving device for driving the cover plate to move to open or close the empty space in the kitchen, and an auxiliary driving device for driving the cover plate to move to open or close the air outlet when the main driving device fails; the air outlet is provided with a guide pipe, the upper end face of the guide pipe inclines relative to the plane where the air outlet is located, the guide pipe is located in the ash removal bin, the main driving device comprises a first air cylinder corresponding to the air outlet, the cover plate is connected with a piston rod of the first air cylinder through a universal shaft, and the auxiliary driving device comprises a second air cylinder located on the outer side of the highest position of the guide pipe and corresponding to the cover plate. The intelligent monitoring system has higher intelligence, meets the requirement of technical development, can reduce the working strength of personnel and obtains better effect.
Description
Technical Field
The invention belongs to the field of industrial dust removal, and particularly relates to an ash removal device of an intelligent dust removal system and a control method thereof.
Background
The existing industrial dust removal system does not have an automatic management control system, particularly an ash removal device therein usually adopts a scheme of manual control manually according to experience, on one hand, the control mode has high requirements on personnel, and on the other hand, the working state of the dust removal system cannot be managed and counted, so that the existing industrial dust removal system does not have intelligence and does not meet the development requirements.
Disclosure of Invention
The invention aims to provide an intelligent dust removing system dust cleaning device and a control method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the dust cleaning device of the intelligent dust removal system comprises a gas storage tank for storing gas for injection, a pressure pipeline with one end connected with the gas storage tank, a gas distribution box arranged at the other end of the pressure pipeline, an electromagnetic pulse valve arranged on the gas distribution box for controlling the gas flow in the gas distribution box, an injection pipe connected with the gas distribution box, a plurality of nozzles connected with the injection pipe and corresponding to the insides of the filter bags, a dust cleaning bin used for arranging the nozzles and the local parts of the injection pipe and provided with air outlets, and a shutter arranged at the air outlets of the dust cleaning bin and capable of opening or closing the air outlets;
the ash removal device of the intelligent dust removal system further comprises a control module, and the control module comprises:
the detection device is used for respectively detecting a plurality of parameters in the ash removal device and outputting corresponding detection signals;
the controller is in communication connection with each detection device, the electromagnetic pulse valve and the shutter and is used for monitoring and counting parameters of the ash cleaning device and generating control signals and alarm signals for controlling the electromagnetic pulse valve and the shutter based on the monitored parameters;
the shutter comprises a cover plate corresponding to the air outlet, a main driving device for driving the cover plate to move to open or close the empty kitchen, and an auxiliary driving device for driving the cover plate to move to open or close the air outlet when the main driving device fails;
the air outlet is provided with a guide pipe, the upper end face of the guide pipe is inclined relative to the plane where the air outlet is located, the guide pipe is located in the ash removal bin, the main driving device comprises a first air cylinder corresponding to the air outlet, the cover plate is connected with a piston rod of the first air cylinder through a universal shaft, and the auxiliary driving device comprises a second air cylinder located on the outer side of the highest position of the guide pipe and corresponding to the cover plate.
Preferably, the detection device includes a differential pressure detection sensor for detecting a differential pressure between inside and outside of the filter bag, a tank pressure detection sensor for detecting a pressure in the gas tank, a line pressure detection sensor for detecting a pressure in the pressure line, a bag pressure detection sensor for detecting a pressure in the gas distribution tank, an electromagnetic valve detection sensor for detecting a working parameter of the electromagnetic pulse valve, and a shutter detection sensor for detecting a working state of the shutter.
Preferably, the control module further comprises a plurality of mobile monitoring terminals which are in communication connection with the controller and used for performing parameter monitoring and alarm signal checking on the ash removal device.
Preferably, the dust cleaning device further comprises an auxiliary dust cleaning mechanism which is arranged on the outer side of the filter bag and used for blowing off dust trapped on the outer side of the filter bag.
Preferably, the auxiliary dust removing mechanism comprises a frame arranged at the outer side of each filter bag, a plurality of auxiliary spraying parts which are connected to the frame in a sliding manner and connected with the air storage tank, and a driving part which drives the auxiliary spraying parts to slide on the frame.
Preferably, the auxiliary blowing part comprises a sliding base connected with the frame in a sliding manner, an air deflector rotatably connected to the sliding base, and a plurality of auxiliary blowing pipes arranged on the air deflector and facing the filter bag, wherein the auxiliary blowing pipes are connected with the air storage tank.
Preferably, the driving part comprises a motor, a screw rod driven by the motor, and a nut arranged on the screw rod, and the auxiliary blowing part is connected with the nut.
Preferably, the frame comprises a plurality of annular frame bodies which surround the filter bag and are longitudinally distributed, and a plurality of connecting columns which are connected with the annular frame bodies.
A control method adopted by the ash removal device of the intelligent dust removal system comprises the following steps: the method comprises the steps of respectively detecting multiple parameters in the ash removal device and outputting corresponding detection signals, wherein the detection signals are transmitted to the controller, a standard range is preset in the controller aiming at each parameter, when the parameters exceed the standard range, the controller sends corresponding alarm signals, and the controller sends corresponding control signals to the electromagnetic pulse valve and/or the shutter, so that the working state of the electromagnetic pulse valve and/or the shutter is changed to adjust the parameters to return to the standard range.
Preferably, the controller controls and adjusts any one or more of the blowing time, the blowing pressure and the blowing frequency controlled by the electromagnetic pulse valve within an adjusting range according to the service time of the filter bag and the pressure difference between the inside and the outside of the filter bag.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the ash removal device of the intelligent dust removal system can automatically complete the ash removal process, has higher intelligence, meets the requirement of technical development, can reduce the working strength of personnel, and obtains better effect.
Drawings
FIG. 1 is a schematic diagram of an intelligent dust removal system of the present invention.
Fig. 2 is a schematic view of a first embodiment of the shutter according to the invention.
Fig. 3 is a schematic view of a second embodiment of the shutter according to the invention.
Fig. 4 is a schematic view of a second embodiment of the shutter according to the invention.
Fig. 5 is a schematic view of a third embodiment of the shutter according to the invention.
Fig. 6 is a schematic view of a third embodiment of the shutter according to the invention.
FIG. 7 is a schematic structural view of the ash removal device of the present invention in which the air deflector of the auxiliary blowing part is not opened.
FIG. 8 is a schematic structural view of the ash removal device according to the present invention when the air deflector of the auxiliary blowing part is opened.
Fig. 9 is an enlarged view of a portion a of fig. 7.
In the above drawings: 110. a filtration device; 111. a filtering bin; 112. a filter bag; 113. an air flow distribution device; 114. an air inlet;
120. an air inducing device; 121. an induced draft pipe; 122. a fan;
130. a dust removal device; 131. a gas storage tank; 132. a pressure line; 133. a gas distribution box; 134. an electromagnetic pulse valve; 135. a blowing pipe; 136. a nozzle; 137. a dust removal bin; 138. a shutter;
140. an ash discharge device; 141. an ash bin; 142. an ash discharge valve; 143. a dust conveying system;
1. a body; 5. an air outlet; 6. a cover plate; 7. a motor; 8. a cylinder; 9. a housing; 10. a speed reduction mechanism; 11. upper/first cylinder; 12. lower/second cylinder; 13. an armature; 14. a conduit; 23. an extension plate; 24. an annular frame body; 25. connecting columns; 26. an air deflector; 27. an auxiliary blowing pipe; 28. a motor; 29. a screw rod, 210 and a nut; 211. buckling; 212. and rotating the shaft.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
The first embodiment is as follows: as shown in fig. 1, an industrial intelligent dust removal system includes four major parts, i.e., a filter device 110, an air inducing device 120, a dust removing device 130 and a dust discharging device 140, wherein the air inducing device 120, the dust removing device 130 and the dust discharging device 140 are all connected to the filter device 110.
The filtering device 110 is used for filtering flue gas, and includes a filtering chamber 111 and a plurality of filter bags 112 disposed in the filtering chamber 111. The filter silo 111 has an inlet opening 114, along which the material to be treated enters the filter silo 111 from the inlet opening 114. An air flow distribution device 113 for uniformly distributing air flow is also arranged in the filter bin 111 corresponding to the air inlet 114. The filter bags 112 are usually suspended on the top of the filter bin 111, and the top of the filter bin 111 is provided with through holes corresponding to the filter bags 112, and after the filter bags 112 are suspended and installed, the insides of the filter bags 112 are communicated with the through holes. After the flue gas enters the filter bin 111, firstly, because the cross section area of the airflow is suddenly increased and the flow speed is reduced, a part of large particles, dust with large density and condensed dust particles in the airflow are rotated down along the wall of the filter bin 111 under the action of centrifugal force and gravity; then, dust particles with fine particle size and small density are suspended in the gas and pass through the gas flow distribution device 113, uniformly enter the middle part of the filter chamber and are dispersed in gaps of the filter bag 112, and pass through a large number of filter holes on the filter bag 112 from the outer side of the filter bag 112 to the inner side of the filter bag 112 through the actions of inertial collision, screening and the like on the surface of the filter bag 112, so that the dust is filtered, the filtered dust is intercepted on the filter bag 112, and the filtered purified gas flows to the through holes from the inner part of the filter bag 112.
The air inducing device 120 is used for inducing the circulation of the flue gas in the filtering device 110 and conveying the collected dust to the dust removing device at any time, and comprises an air inducing pipe 121 with one end directly or indirectly communicated with the inside of the filtering bin 111 and a fan 122 arranged at the other end of the air inducing pipe 121. Wherein the induced draft duct 121 is in a fixed device and the blower 122 belongs to an actuating device. The air inducing device 120 has two types, one is a system for inducing air by a negative pressure air draft mode, and an air inducing pipe 121 of the air inducing device is connected with the tail end of a filter bin 111 of the dust removing device; the other type is a system for inducing air by means of positive pressure air delivery, and an induced air pipe 121 of the system is connected with the front end of the filter bin 111, namely an air inlet 114. In fig. 1, a first type of air inducing device 120 is used.
The ash cleaning device 130 is used for cleaning dust trapped on the filter bags 112, corresponds to each filter bag 112 in the filter device 110, and comprises an air storage tank 131 for storing blowing air, a pressure pipeline 132 with one end connected with the air storage tank 131, an air distribution box 133 arranged at the other end of the pressure pipeline 132, an electromagnetic pulse valve 134 arranged on the air distribution box 133 to control the air flow therein, an injection tube 135 connected with the air distribution box 133, a plurality of nozzles 136 connected with the injection tube 135 and corresponding to the interior of each filter bag 112, an ash cleaning bin 137 for arranging the local parts of each nozzle 136 and the injection tube 135 and having an air outlet 55, and a shutter 138 arranged at the air outlet 55 of the ash cleaning bin 137 and capable of opening or closing the air outlet 55. The dust removing chamber 137 is generally disposed above the filtering chamber 111, so as to be connected to the filtering chamber 111 through a corresponding through hole of each filter bag 112. The airflow filtered by the filtering bin 111 enters the ash removing bin 137 and is discharged from the air outlet 55 of the ash removing bin 137 in an open state, so that the air guiding pipe 121 can be connected to the air outlet 55 of the ash removing bin 137, which is equivalent to being connected with the filtering bin 111. When the filter device 110 is operated for a period of time such that a large amount of dust is trapped on the filter bag 112, the dust is removed. At this time, the shutter 138 closes the air outlet 55 of the dust bin 137, and the blowing air in the air storage tank 131 is delivered to the air distribution box 133 through the pressure pipe 132 to form an air bag, so that the air is blown reversely to each filter bag 112 through the blowing tube 135 and the nozzle 136 at a specific blowing time, blowing pressure and blowing frequency by the control of the electromagnetic pulse valve 134, and at least part of the dust attached to the outside of the filter bag 112 falls off.
The shutter 138 may take a variety of forms, the basic form being: the motor 7 and the cover plate 6 driven by the motor to rotate or move are adopted, so that the opening or closing of the air outlet 55 is realized by moving the cover plate 6 to different positions. The shutter 138 of this basic form causes a problem in the dust removal process when the motor 7 fails, and cannot open and close the air outlet 55 correctly along with the dust removal process. Therefore, the shutter 138 is modified such that the shutter 138 includes a cover 6 corresponding to the outlet 55, a main driving device for driving the cover 6 to move to open or close the outlet 55, and a sub-driving device for driving the cover 6 to move to open or close the outlet 55 when the main driving device fails. The main drive and the sub-drive of the shutter 138 may be selected from any of the following options:
the first scheme is as follows: as shown in fig. 2, the main driving device comprises a cylinder 8, and a cover plate 6 is mounted on a piston rod of the cylinder 8 and moves up and down along with the expansion and contraction of the piston rod; the secondary drive means comprises a motor 7 mounted on the piston rod and capable of driving the piston rod in rotation. A housing 9 for accommodating its piston rod and the electric motor 7 can be mounted on the cylinder 8, so that at least part of the piston rod is in driving connection with the electric motor 7 through the housing 9. A speed reduction mechanism 10 and a transmission mechanism (e.g., a worm mechanism) may be disposed between the motor 7 and the piston rod to convert the rotation output by the motor 7 into the rotation of the piston rod. Generally, the air cylinder 8 drives the cover plate 6 to move so as to open or close the air outlet 55. When the cylinder 8 is out of work, the piston rod of the cylinder drops to enable the cover plate 6 to close the air outlet 55, if the air outlet 55 is in a filtering and dust removing state, the air outlet 55 is kept open, the piston rod is driven to rotate by the motor 7, the cover plate 6 is driven to rotate to the position where the air outlet 55 is not covered, and the air outlet 55 cannot be closed by the cover plate 6. The cylinder 8 and the motor 7 both belong to an actuating mechanism.
Scheme II: as shown in fig. 3 and fig. 4, the air outlet 55 is provided with a conduit 14, the upper end surface of which is inclined relative to the plane of the air outlet 55 and is located in the ash removing bin 137, at this time, the main driving device comprises an upper cylinder 11, and the cover plate 6 is connected with the piston rod of the upper cylinder 11 through a universal shaft; and the auxiliary driving device comprises a lower air cylinder 12 positioned at the outer side of the highest part of the guide pipe 14 and an armature 13 arranged on the lower air cylinder 12, wherein the armature 13 is positioned below the cover plate 6, and the upper end surface of the armature 13 is an arc-shaped surface. For example, the lowest of the side walls of the conduit 14 is to the left of the highest of the side walls, and the piston rod of the lower cylinder 12 is to the right of the conduit 14. When the upper cylinder 11 fails and the piston rod falls freely to cause the cover plate 6 to be covered on the guide pipe 14, the armature 13 is controlled to be electrified to generate magnetism, meanwhile, the lower cylinder 12 extends upwards, after the armature 13 is contacted with the cover plate 6, the cover plate 6 is connected with the armature 13 by utilizing strong magnetism, then, the lower cylinder 12 can continuously move upwards to drive the piston rod of the upper cylinder 11 and the cover plate 6 to move upwards together, the guide pipe 14 is opened to ensure the normal operation of the dust remover, the lower cylinder 12 can also move downwards after the cover plate 6 is connected with the armature 13, the highest point of the guide pipe 14 is used as a fulcrum, the adsorption force of the armature 13 is a downward pulling force, the cover plate 6 is tilted, the guide pipe 14 is opened, an air guide plate can be formed on the guide pipe 14 at the same time, the air outlet efficiency of the air outlet 55 is improved, the power.
The third scheme is as follows: as shown in fig. 5, the air outlet 55 is provided with a duct 14, the upper end surface of which is inclined relative to the plane of the air outlet 55 and is located in the dust removing bin 137. The main driving device comprises a first air cylinder 11 arranged corresponding to the air outlet 55, and the cover plate 6 is connected with a piston rod of the first air cylinder 11 through a universal shaft; the secondary drive means comprise a second cylinder 12 located outside the uppermost part of the conduit 14 and corresponding to the cover plate 6. When the first cylinder 11 fails and the piston rod falls freely to seal the cover plate 6 on the guide pipe 14, the piston rod of the second cylinder 12 moves downwards to push the cover plate 6 from above, and the cover plate 6 is tilted by using the highest point of the guide pipe 14 as a fulcrum, so that the guide pipe 14 is opened.
As shown in fig. 7 to 9, the dust removing device further includes an auxiliary dust removing mechanism disposed outside each filter bag 112 for blowing off dust trapped outside the filter bag 112. The auxiliary ash cleaning mechanism comprises a frame, a plurality of auxiliary blowing parts and a driving part.
The frame is disposed outside the filter bag 112 and includes a plurality of ring frames 24 surrounding the filter bag 112 and longitudinally distributed, and a plurality of connecting columns 25 connecting the ring frames 24.
The auxiliary blowing part is connected to the frame in a sliding manner and is connected to the air storage tank through an auxiliary air pipe and an auxiliary control valve. The auxiliary blowing part comprises a sliding base which is in sliding connection with a connecting column 25 of the frame, an air deflector 26 which is rotatably connected on the sliding base, a plurality of auxiliary blowing pipes 27 which are arranged on the air deflector 26 and face the filter bag 112, and an air storage tank of the auxiliary blowing pipes 27 is connected. Typically one slide base is connected to two adjacent connecting posts 25. The sliding base comprises buckles 211 which are clamped on the two adjacent connecting columns 25 and can slide along the connecting columns 25 and a rotating shaft 212 which is rotatably connected between the two buckles 211, and the buckles 211 are provided with extension plates 23. The rotation axis of the air deflector 26 is parallel to the upper end surface of the filter bag 112, i.e. the plane of the opening of the filter bag 112 communicated with the dust bin 137. The air deflectors 26 are distributed in a diverging manner around the axis of the annular frame 24 of the frame. The auxiliary blowing pipes 27 are uniformly distributed on the air deflector 26.
The driving part is arranged on the frame and is used for driving the auxiliary blowing part to slide on the frame, and comprises a motor 28, a screw 29 driven by the motor 28 and a nut 210 arranged on the screw 29, and the extension plate 23 connected with the slide base hair clasp 211 is fixedly connected with the nut 210.
The working principle of the auxiliary ash cleaning mechanism is as follows: when the nozzle 136 is started to clean ash without any significant effect, the auxiliary blowing part is started, the motor 28 drives the screw 29 to rotate so as to drive the buckle 211 fixed with the nut 210 to move up and down, namely, the air deflector 26 can move up and down, so that the filter bag 112 is blown through the auxiliary blowing pipe 27. The air deflector 26 is made of light materials, the opening angle of the air deflector 26 changes along with the change of the blowing quantity of the auxiliary blowing pipe 27, the larger the blowing quantity is, the larger the opening angle of the air deflector 26 is, the lower the position of the filter bag 112 which can be blown by the auxiliary blowing pipe 27 is, and the air quantity of the auxiliary blowing pipe 27 is always smaller than that of the nozzle 136.
The dust discharging device 140 is used for collecting and discharging dust falling off from the filter bag 112, and includes a dust bin 141 connected to the bottom of the filter bin 111 for storing the dust, a dust conveying system 143 connected to the dust bin 141, a dust discharging valve 142 for connecting the dust bin 141 and the dust conveying system 143, and a pneumatic arching device (air cannon) for driving the dust in the dust bin 141 to flow. The ash bin 141 can be directly formed at the bottom of the filter bin 111, and is in an inverted cone shape, the ash discharge valve 142 is installed at the bottom of the ash bin 141, the dust conveying system 143 is connected with the ash discharge valve 142 from the lower part, and the pneumatic arch breaker is arranged in the ash bin 141. When a certain amount of dust is accumulated in the dust bin 141, the dust discharge valve 142 and the pneumatic arch breaker are activated, so that the dust in the dust bin 141 flows into the dust conveying system 143 to be discharged to a specific position.
The ash cleaning bin 137, the filtering bin 111 and the ash bin 141 can be integrated in a body 1, the body 1 is divided into an upper bin, a middle bin and a lower bin from top to bottom, the upper bin, the middle bin and the lower bin respectively correspond to the ash cleaning bin 137, the filtering bin 111 and the ash bin 141, the upper bin and the lower bin are separated through a partition board with through holes, and the air inlet 114 of the filtering bin 111 and the air outlet 55 of the ash cleaning bin 137 are respectively located on two sides of the body 1.
In addition, the intelligent dust removal system can further comprise a spark extinguishing device for extinguishing sparks in the electromagnetic pulse valve 134 and an explosion discharging device for discharging the electromagnetic pulse valve 134.
The intelligent dust removal system is provided with a control system, and the intelligent dust removal system can be automatically detected and controlled through the control system. The ash cleaning device is correspondingly provided with a control module in a control system. The control module includes a detection device and a controller. The detection device is used for respectively detecting multiple parameters in the ash removal device and outputting corresponding detection signals, and generally comprises a differential pressure detection sensor for detecting the difference between the internal pressure and the external pressure of a filter bag, a gas tank pressure detection sensor for detecting the pressure in a gas storage tank, a pipeline pressure detection sensor for detecting the pressure in a pressure pipeline, a gas bag pressure detection sensor for detecting the pressure in a gas separation tank, an electromagnetic valve detection sensor for detecting working parameters of an electromagnetic pulse valve, and a shutter detection sensor for detecting the working state of a shutter. Each sensor outputs 4-20 mA analog signals for processing. The controller is respectively in communication connection with the detection devices, the electromagnetic pulse valve and the shutter, and is used for monitoring and counting parameters of the ash removal device and generating control signals and alarm signals for controlling the electromagnetic pulse valve and the shutter based on the monitored parameters. The controller may be located in the central control room so that the communication connection may be made by wired or wireless means. In addition, the control module can also comprise a plurality of mobile monitoring terminals which are in communication connection with the controller and used for monitoring parameters and checking alarm signals of the ash cleaning device. The mobile monitoring terminal can be carried by the related technical personnel. The mobile monitoring terminal can be realized by a mobile phone or a portable computer provided with an APP, and is communicated with the controller through a mobile communication network.
The control method adopted by the ash removal device of the intelligent dust removal system is as follows: the method comprises the steps of respectively detecting a plurality of parameters in the ash removal device and outputting corresponding detection signals, transmitting the detection signals to a controller, presetting a standard range in the controller aiming at each parameter, sending a corresponding alarm signal by the controller when the parameters exceed the standard range, and sending corresponding control signals to an electromagnetic pulse valve and/or a shutter by the controller, so that the working state of the electromagnetic pulse valve and/or the shutter is changed to adjust the parameters to return to the standard range.
Specifically, the controller controls and adjusts any one or more of the blowing time, the blowing pressure, and the blowing frequency of the filter bag 112 within an adjustment range according to the usage time of the filter bag and the pressure difference between the inside and the outside of the filter bag. When the filter bag 112 is a new filter bag 112, the operation resistance of the intelligent dust removal system is low, that is, the pressure difference between the two sides of the filter bag 112 is small, and the electromagnetic pulse valve 134 is controlled to be at a low injection pressure, a low injection time and a low injection frequency (that is, a long injection interval, a long injection period, and one injection period includes a total injection time interval and a total injection time interval, and in the total injection time interval, the electromagnetic pulse valve 134 performs multiple injections according to a single injection time and a single injection time interval). At the moment, because the intelligent dust removal system works under lower working pressure and frequency, the service lives of the intelligent dust removal system and the dust removal system can be greatly prolonged, and a large amount of compressed air is saved. After the intelligent dust removal system operates for a period of time, the system operating resistance is gradually increased, that is, the variation trend of the pressure difference between the two sides of the filter bag 112 is gradually increased, and the optimal working state of the intelligent dust removal system cannot be ensured even under the currently set blowing time, blowing pressure and blowing frequency, at this time, the controller needs to adjust any one or more of the blowing time, blowing pressure and blowing frequency of the dust removal device 130 to enable the dust removal device 130 to achieve an ideal dust removal effect, so that the operating resistance of the intelligent dust removal system is controlled in an optimal range to achieve an ideal dust removal effect. In general, in the adjustment, the blowing time is adjusted first, then the blowing pressure is adjusted, and then the blowing frequency is adjusted again. And when the blowing time is prolonged and the ash can not be effectively removed, the blowing pressure is adjusted, and when no obvious effect is produced, the blowing pressure is adjusted. The controller can set corresponding adjusting step length according to the standard ranges of the blowing time, the blowing pressure and the blowing frequency, so that the parameters are respectively adjusted according to the set step length. If the three parameters are adjusted to the limit values and the ash still cannot be effectively removed, the controller can also send out corresponding alarm signals.
In the filtering device 110 of the intelligent dust removing system, the optimal range value of the running resistance is usually set to 1000-1500 Pa. In the ash removing device 130, the optimum range value of the blowing pressure of the electromagnetic pulse valve 134 is usually set to 0.2 to 0.4MPa, the optimum range value of each blowing time is usually set to 50 to 300ms, the optimum range value of the blowing interval is usually set to 10 to 30s, and the optimum range value of each cycle of the blowing period is usually set to (0, 255] min.
In the control system of the intelligent dust removing system, the detecting device comprises not only the above-mentioned differential pressure detecting sensor, gas tank pressure detecting sensor, pipeline pressure detecting sensor, gas bag pressure detecting sensor, electromagnetic valve detecting sensor, shutter detecting sensor, but also fan 122 state detecting sensor for detecting whether the fan 122 is opened, fan 122 parameter detecting sensor for detecting current and revolution of the fan 122 in real time, fan air quantity detecting sensor for detecting air quantity of air inlet of the fan 122, inlet air quantity detecting sensor for detecting air quantity of air inlet 114 of the filter bin 111, inlet dust concentration detecting sensor for detecting dust concentration of air inlet 114 of the filter bin 111, inlet temperature detecting sensor for detecting temperature of air inlet 114 of the filter bin 111, outlet dust concentration detecting sensor for detecting dust concentration of air outlet 5 of the clean air bin 137 or in the filter bag 112 or at total air outlet of the intelligent dust removing system, outlet dust concentration detecting sensor for detecting dust concentration of air outlet of the intelligent dust removing system, an outlet temperature detection sensor for detecting the temperature at the air outlet 5 of the purified air bin 137, an in-bag dust concentration detection sensor for detecting the concentration of dust in each filter bag 112, a material level detection sensor for detecting the material level in the dust bin 141, an air cannon detection sensor for detecting the working state of the pneumatic arch breaker, a dust discharge valve 142 detection sensor for detecting the state of the dust discharge valve 142, a dust conveying detection sensor for detecting whether the dust conveying system normally works, a spark detection sensor for detecting whether sparks enter the electromagnetic pulse valve 134, a cylinder 8 detection sensor for detecting whether the cylinder 8 (including the cylinder 8 in the first scheme, the upper cylinder 11 in the second scheme and the first cylinder 11 in the third scheme of the switch 138) normally works, a spark extinguishing detection sensor for detecting whether the spark extinguishing device is started to work, an explosion discharge detection sensor for detecting whether the explosion discharge device is started, and the like.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The dust cleaning device of the intelligent dust removal system comprises a gas storage tank for storing gas for injection, a pressure pipeline with one end connected with the gas storage tank, a gas distribution box arranged at the other end of the pressure pipeline, an electromagnetic pulse valve arranged on the gas distribution box for controlling the gas flow in the gas distribution box, an injection pipe connected with the gas distribution box, a plurality of nozzles connected with the injection pipe and corresponding to the insides of the filter bags, a dust cleaning bin used for arranging the nozzles and the local parts of the injection pipe and provided with air outlets, and a shutter arranged at the air outlets of the dust cleaning bin and capable of opening or closing the air outlets;
the ash removal device of the intelligent dust removal system further comprises a control module, and the control module comprises:
the detection device is used for respectively detecting a plurality of parameters in the ash removal device and outputting corresponding detection signals;
the controller is in communication connection with each detection device, the electromagnetic pulse valve and the shutter and is used for monitoring and counting parameters of the ash cleaning device and generating control signals and alarm signals for controlling the electromagnetic pulse valve and the shutter based on the monitored parameters;
the shutter comprises a cover plate corresponding to the air outlet, a main driving device for driving the cover plate to move to open or close the empty kitchen, and an auxiliary driving device for driving the cover plate to move to open or close the air outlet when the main driving device fails;
the method is characterized in that: the air outlet is provided with a guide pipe, the upper end face of the guide pipe is inclined relative to the plane where the air outlet is located, the guide pipe is located in the ash removal bin, the main driving device comprises a first air cylinder corresponding to the air outlet, the cover plate is connected with a piston rod of the first air cylinder through a universal shaft, and the auxiliary driving device comprises a second air cylinder located on the outer side of the highest position of the guide pipe and corresponding to the cover plate.
2. The ash removal device of the intelligent dust removal system according to claim 1, wherein: the detection device comprises a differential pressure detection sensor for detecting the differential pressure between the inside and the outside of the filter bag, a gas tank pressure detection sensor for detecting the pressure in the gas storage tank, a pipeline pressure detection sensor for detecting the pressure in the pressure pipeline, a gas bag pressure detection sensor for detecting the pressure in the gas distribution tank, an electromagnetic valve detection sensor for detecting the working parameters of the electromagnetic pulse valve, and a shutter detection sensor for detecting the working state of the shutter.
3. The ash removal device of the intelligent dust removal system according to claim 1, wherein: the control module also comprises a plurality of mobile monitoring terminals which are in communication connection with the controller and used for monitoring parameters and checking alarm signals of the ash cleaning device.
4. The ash removal device of a dust removal system according to any one of claims 1 to 3, wherein: the dust cleaning device also comprises an auxiliary dust cleaning mechanism which is arranged outside the filter bag and used for blowing off dust trapped outside the filter bag.
5. The ash removal device of the intelligent dust removal system according to claim 4, wherein: the auxiliary dust cleaning mechanism comprises a frame arranged on the outer side of each filter bag, a plurality of auxiliary spraying parts which are connected to the frame in a sliding mode and connected with the air storage tank, and a driving part which drives the auxiliary spraying parts to slide on the frame.
6. The ash removal device of the intelligent dust removal system according to claim 5, wherein: the auxiliary blowing part comprises a sliding base in sliding connection with the frame, an air deflector rotationally connected to the sliding base, and a plurality of auxiliary blowing pipes arranged on the air deflector and facing the filter bag, wherein the auxiliary blowing pipes are connected with the air storage tank.
7. The ash removal device of the intelligent dust removal system according to claim 5, wherein: the driving part comprises a motor, a screw rod driven by the motor and a nut arranged on the screw rod, and the auxiliary spraying and blowing part is connected with the nut.
8. The ash removal device of the intelligent dust removal system according to claim 5, wherein: the frame comprises a plurality of annular frame bodies which surround the filter bag and are longitudinally distributed, and a plurality of connecting columns which are connected with the annular frame bodies.
9. The control method adopted by the ash cleaning device of the intelligent dust removal system according to claim 1 is characterized in that: the control method comprises the following steps: the method comprises the steps of respectively detecting multiple parameters in the ash removal device and outputting corresponding detection signals, wherein the detection signals are transmitted to the controller, a standard range is preset in the controller aiming at each parameter, when the parameters exceed the standard range, the controller sends corresponding alarm signals, and the controller sends corresponding control signals to the electromagnetic pulse valve and/or the shutter, so that the working state of the electromagnetic pulse valve and/or the shutter is changed to adjust the parameters to return to the standard range.
10. The control method adopted by the ash removal device of the intelligent dust removal system according to claim 9 is characterized in that: the controller controls and adjusts any one or more of the injection time, the injection pressure and the injection frequency controlled by the electromagnetic pulse valve within an adjusting range according to the service time of the filter bag and the pressure difference between the inside and the outside of the filter bag.
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| CN202011041395.1A CN112295328B (en) | 2017-09-12 | 2017-09-12 | Ash removal device of intelligent dust removal system and control method thereof |
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| CN202011041395.1A CN112295328B (en) | 2017-09-12 | 2017-09-12 | Ash removal device of intelligent dust removal system and control method thereof |
| CN201710820391.5A CN109481994B (en) | 2017-09-12 | 2017-09-12 | Ash removal device of dust removal system and control method thereof |
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| CN202011043795.6A Active CN112337209B (en) | 2017-09-12 | 2017-09-12 | Ash removal device of dust removal system and control method thereof |
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| CN117046224A (en) * | 2023-10-11 | 2023-11-14 | 北京利德衡环保工程有限公司 | Unpowered bin top dust remover for desulfurization slaked lime |
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| CN112050467A (en) * | 2020-09-17 | 2020-12-08 | 广州米粒科技有限公司 | High-efficient air heater of new forms of energy |
| CN112121550A (en) * | 2020-10-19 | 2020-12-25 | 科领环保股份有限公司 | Dust cleaning method and device for bag type dust collector |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112337209A (en) | 2021-02-09 |
| CN109481994B (en) | 2021-04-13 |
| CN109481994A (en) | 2019-03-19 |
| CN112337209B (en) | 2022-05-17 |
| CN112295328B (en) | 2022-05-20 |
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