CN114797308A - Straight-through type intelligent bag type dust removal system - Google Patents
Straight-through type intelligent bag type dust removal system Download PDFInfo
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- CN114797308A CN114797308A CN202210363020.XA CN202210363020A CN114797308A CN 114797308 A CN114797308 A CN 114797308A CN 202210363020 A CN202210363020 A CN 202210363020A CN 114797308 A CN114797308 A CN 114797308A
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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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- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
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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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/025—Other waste gases from metallurgy plants
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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
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Abstract
The invention discloses a straight-through intelligent bag type dust removal system which comprises a plurality of bag type dust collectors arranged side by side, wherein each bag type dust collector is provided with a plurality of filter bags, the upper parts of the bag type dust collectors are mutually communicated to form an air purification chamber, the middle parts of the bag type dust collectors are mutually communicated to form a filter bag bin, a perforated plate is arranged between the air purification chamber and the filter bag bin, and the filter bags are fixedly connected with a plurality of transversely and longitudinally arranged hole positions on the perforated plate; the bag-type dust removal system further comprises a movable pulse injection pipe frame unit which reciprocates in the air purification chamber to inject a plurality of filter bags. The invention has the characteristics of automation and intellectualization, has the functions of real-time online detection and quick repair, adopts the mobile composite dust detection technology to carry out dynamic dust area detection and static fixed-point dust image analysis on the static air system of the bag type dust collector, eliminates the influence of air flow, accurately finds the broken filter bag, and automatically and quickly blocks and processes in time.
Description
Technical Field
The invention relates to the field of bag type dust collectors, in particular to a straight-through type intelligent bag type dust collection system.
Background
At present, organized dust emission in the steel industry is controlled by adopting a cloth bag dust removal technology except a few procedures such as converter gas, sintering machine heads, rolling mill flue gas and steel slag treatment, and occupies more than 90% of a dust removal system in the steel industry according to air volume estimation. With the promotion of national environmental protection standard, the organized emission requirement of the dust remover is controlled at 10mg/m 3 In the following, some enterprises even require control at 5mg/m 3 This, in turn, places higher demands on the design and operational management levels of the dust separator.
The bag-type dust collector realizes the filtration and interception of dust by a plurality of bags. When the dust gas is filtered by the filter bag, the dust can be adsorbed on the outer surface of the filter bag, but when the filter bag is damaged, the dust can directly enter the filter bag through the broken hole and pollute the filter bag; or under the action of the expansion effect during pulse blowing, the dust can be directly sucked into the defective filter bag. Both of the two situations can cause the dust emission to exceed the standard, and the production can only be stopped at the moment. The dust-polluted filter bag leaves pollution traces on the inner surface of the filter bag and the opening of the filter bag, and the pollution traces are gradually deepened and have different colors from the color of the normal surrounding opening of the filter bag. The method is also used for determining the broken filter bag when the cabin opening inspection is carried out on the traditional bag type dust collector manually. The work efficiency of manually searching and replacing the damaged cloth bag is extremely low, the work intensity is extremely high, and the work environment is extremely unfriendly. And the cloth bags are replaced in batch, which causes resource waste.
Disclosure of Invention
The invention provides a straight-through intelligent bag type dust removal system which has the characteristics of automation and intellectualization, and is high in reliability and easy to maintain.
According to the through-type intelligent bag type dust removal system, a mobile pulse blowing mode is used for replacing a fixed pulse blowing mode, a machine vision technology and an Artificial Intelligence (AI) technology are applied to an innovative mobile composite dust detection technology link of a pulse type industrial bag type dust remover system, the influence of air flow disturbance is eliminated, and the accuracy and the real-time performance of finding broken filter bags and filter cartridges are improved. The industrial servo technology and the mobile robot technology are applied to each working link of mobile blowing, composite detection, maintenance and first-aid repair, so that the dust remover can realize high-efficiency and safe operation and real-time standard discharge, and has higher reliability in production and operation; the dust remover equipment is easier to maintain. The robot and the application of the related technology also solve the problems of automatic online detection and online maintenance of the dust remover and ensure that the dust emission at the outlet of the dust remover reaches the standard stably for a long time.
The above purpose is realized by the following technical scheme:
a straight-through type intelligent bag-type dust removal system comprises a plurality of bag-type dust collectors arranged side by side, wherein each bag-type dust collector is provided with a plurality of filter bags; the bag-type dust removal system further comprises a movable pulse injection pipe frame unit which reciprocates in the air purification chamber to inject a plurality of filter bags.
The straight-through type intelligent bag-type dust removal system is characterized in that the perforated plate extends in the length direction of the bag-type dust removal system, and the movable pulse injection pipe frame unit is placed in a first parking chamber at one end of the perforated plate; the bag-type dust removal system also comprises a track shuttle car, wherein a track parallel to the length direction of the bag-type dust removal system is arranged on the perforated plate, and the track shuttle car slides along the track; the rail shuttle vehicle lifts the movable pulse injection pipe frame unit arranged in the first parking chamber, carries the movable pulse injection pipe frame unit to reciprocate in the air purification chamber, and parks the movable pulse injection pipe frame unit above the bag type dust collector to enable the movable pulse injection pipe frame unit to inject a plurality of filter bags.
The straight-through type intelligent bag-type dust removal system is characterized in that the movable pulse blowing pipe frame unit is of a frame body structure provided with two layers of pipelines, and a plurality of blowing openings are formed in the pipelines; the first layer of pipelines are a plurality of main injection pipes vertical to the track, and the second layer of pipelines are a plurality of auxiliary injection pipes parallel to the track; and the blowing ports on the main blowing pipe and the auxiliary blowing pipe are respectively matched with a plurality of transversely and longitudinally arranged hole sites on the perforated plate.
The straight-through type intelligent bag-type dust removal system is characterized in that a high-pressure gas collection bag and a low-pressure gas distribution bag are respectively arranged on two sides of the movable pulse jet pipe frame unit, the high-pressure gas collection bag is connected with a gas purifying chamber fixed gas path interface through a high-pressure gas path and a one-way valve, the low-pressure gas distribution bag is connected with the plurality of jetting ports through a low-pressure gas path and a pulse valve, and the high-pressure gas collection bag is communicated with the low-pressure gas distribution bag through a gas supplementing path, a pressure reducing valve and the one-way valve.
The straight-through type intelligent bag-type dust removal system is characterized in that the front side and the rear side of the rail shuttle car are provided with pull-wire type electrostatic dust meters which are used for synchronously carrying out dynamic dust detection when the main injection blow pipe performs injection on a certain area; the auxiliary blowing pipe is used for blowing the area twice when the peak value of the measurement curve of the pull-wire type electrostatic dust meter is larger so as to further determine whether the broken filter bag exists in the area.
The straight-through intelligent bag-type dust removal system is characterized in that a second parking chamber is arranged at the other end of the perforated plate, a mobile detection and plugging robot is parked in the second parking chamber, the track shuttle vehicle lifts the mobile detection and plugging robot placed in the second parking chamber, and the mobile detection and plugging robot is carried to a damaged filter bag area for detection and plugging.
The straight-through intelligent bag-type dust removal system is characterized in that the movement detection and plugging robot is provided with an X-axis linear unit which moves in the direction vertical to the track, the X-axis linear unit is provided with a liftable Z-axis linear unit, and the Z-axis linear unit is provided with a mechanical finger; and the X-axis linear unit is also provided with a static fixed-point dust image visual analysis industrial camera.
The straight-through intelligent bag-type dust removal system is characterized in that the perforated plate of the second parking chamber is provided with a plugging tool, a mechanical finger grabs the plugging tool on the perforated plate and moves along with the rail shuttle, and after the industrial camera determines that the damaged filter bag is located, the mechanical finger plugs the plugging tool into the perforated plate hole where the damaged filter bag is located.
The straight-through type intelligent bag-type dust removal system is characterized by further comprising a rescue winch arranged in the first parking chamber, wherein a traction steel wire rope is arranged on the rescue winch, and the other end of the traction steel wire rope is connected with the rail shuttle car.
The straight-through type intelligent bag-type dust removal system is characterized in that electric sealing doors are arranged between the first parking chamber and the air purifying chamber, and between the second parking chamber and the air purifying chamber.
The stepping dust removal method of the straight-through intelligent bag type dust removal system is characterized by comprising the following steps:
(1) the rail shuttle vehicle lifts the movable pulse injection pipe frame unit in the first parking chamber and moves to the position above the filter bag of a certain area, and then the rail shuttle vehicle parks the movable pulse injection pipe frame unit to enable the injection port to coincide with the center of the hole site;
(2) the movable pulse blowing pipe frame unit tightly holds the track, a one-way valve on the high-pressure gas path is opened, and the high-pressure gas collection bag is rapidly inflated; opening a pulse valve on the low-pressure gas path, and performing explosive pulse injection on the filter bag;
(3) after the blowing is finished, the movable pulse blowing pipe frame unit 6 loosens the rail, the rail shuttle car lifts up and carries the movable pulse blowing pipe frame unit again and moves towards the upper part of the filter bag of the next area, and meanwhile, a one-way valve on the air supply pipeline is opened, and air is supplied to the low-pressure steam distribution bag through the high-pressure air collection bag; when the rail shuttle vehicle carries the movable pulse injection pipe frame unit to move to the position above the filter bag of the next area, the rail shuttle vehicle stops the movable pulse injection pipe frame unit again, the movable pulse injection pipe frame unit continues injection work until the sequential injection of the filter bags of all the areas is completed, and the step-type dust removal work is finished.
The invention has the beneficial effects that:
(1) the straight-through type intelligent bag type dust removal system uses a mobile pulse blowing mode to replace the prior fixed pulse blowing mode, and reduces the wind resistance coefficient of the pulse type industrial bag type dust removal system.
(2) The straight-through type intelligent bag type dust removal system has the capability of automatically identifying the breakage of the filter bag and positioning and detecting on line, and is particularly represented as follows:
the straight-through type intelligent bag type dust removal system is provided with a stay wire type electrostatic dust instrument, is matched with a movable pulse injection pipe frame unit for use, can dynamically sense electrostatic charges in airflow, and can determine a suspicious damaged filter bag area in the injection process;
furthermore, a suspected damaged filter bag area is determined, the straight-through intelligent bag type dust removal system is provided with a mobile detection and plugging robot, static images are photographed through an industrial camera of the mobile detection and plugging robot, then the image pair is subjected to visual analysis, historical image comparison and entropy calculation are carried out after image gray scale processing, a damaged filter bag can be found, the damaged filter bag is found out from a plurality of filter bags in the suspected area, the position coordinates of the damaged filter bag are determined and recorded, and a mechanical finger carried on the mobile detection and plugging robot can plug a plugging tool to a hole position corresponding to the damaged filter bag, so that the damaged filter bag is off-line, the system is ensured to be discharged up to the standard and run without stopping constantly, and the production efficiency is improved; and the damaged filter bag and the filter cylinder are intensively replaced by utilizing the follow-up regular shutdown maintenance time of the equipment at the later stage, so that the labor cost is reduced.
(3) The mobile detection and plugging robot provided by the invention uses a mobile static fixed point dust image analysis technology, eliminates the influence of airflow disturbance, improves the accuracy of inspection, accelerates the inspection speed and efficiency, and particularly uses an Artificial Intelligence (AI) technology, and the accuracy and speed of the mobile static fixed point dust image visual analysis are higher and higher through a machine deep learning method.
(4) The movable spraying and blowing pipe frame unit is separated from the rail shuttle vehicle when spraying and blowing work, so that the rail shuttle vehicle is protected from direct vibration influence, and the precision of a servo system of the rail shuttle vehicle is ensured; meanwhile, the movable blowing pipe frame unit tightly holds the track during blowing operation, so that the amplitude is reduced, and the pneumatic and control system arranged on the movable blowing pipe frame unit is prevented from being influenced.
Drawings
FIG. 1 is a top view of a straight-through intelligent bag house system of the present invention.
Fig. 2 is a side view of a straight-through smart bag house system of the present invention.
Fig. 3 is a front view of a straight-through intelligent bag house system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation, are intended to cover a non-exclusive inclusion, such that a product, device, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, device, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship as shown in the drawings, which is meant only to facilitate describing the invention and to simplify the description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed or operated in a particular orientation, and is not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to fig. 1 to 3.
As shown in fig. 1-3, the straight-through intelligent bag-type dust removal system of the present invention comprises a plurality of bag-type dust collectors arranged side by side, and each bag-type dust collector is provided with a plurality of filter bags 1. The upper parts of the bag-type dust collectors are communicated with each other to form an air purifying chamber 2, the middle parts of the bag-type dust collectors are communicated with each other to form a filter bag bin 3, a perforated plate 4 is arranged between the air purifying chamber 2 and the filter bag bin 3, and the filter bags 1 are fixedly connected with a plurality of hole sites which are transversely and longitudinally arranged on the perforated plate 4. The perforated plate 4 extends in the length direction of the bag-type dust removal system, a first parking chamber 5 is arranged at one end of the perforated plate 4, and the movable pulse injection pipe frame unit 6 is placed in the first parking chamber 5. The bag-type dust removal system further comprises a rail shuttle car 7, a rail 8 parallel to the length direction of the bag-type dust removal system is arranged on the perforated plate 4, the rail shuttle car 7 can slide along the rail 8 and lift up a movable pulse injection pipe frame unit 6 arranged in the first parking chamber 5, the movable pulse injection pipe frame unit 6 is carried to reciprocate in the clean air chamber, and the movable pulse injection pipe frame unit 6 is parked above the bag-type dust remover to enable the movable pulse injection pipe frame unit to inject a plurality of filter bags 6.
In the embodiment of the straight-through intelligent bag-type dust removal system, a perforated plate of an air purifying chamber is provided with 14 holes in each row in 66 rows, a filter bag is hung below each hole, and 924 filter bags are mounted in total.
The rail shuttle 7 of the invention can accurately and controllably reciprocate linearly along the rail 8 in the bag-type dust removal system. The rail shuttle vehicle adopts a gear and rack transmission system and is driven by an alternating current servo motor, and the alternating current servo motor and a speed reducer system are arranged on the vehicle body of the rail shuttle vehicle 7 and are connected with a power gear through an electromagnetic clutch; the rack is fixed on the inner side of the rail 8. The motion control of the rail shuttle car 7 adopts a double-encoder closed-loop servo system, so that the motion precision and the repeated position precision of the rail shuttle car 7 moving along the rail 8 are improved. In the present embodiment, the rail shuttle is driven by an ac servo motor with a power of 2.2 KW. The maximum moving speed of the rail shuttle vehicle is 2 m/s, and the walking and repeated positioning precision is +/-2.0 mm.
The straight-through type intelligent bag type dust removal system uses a mobile pulse blowing mode to replace the prior fixed pulse blowing mode, and reduces the wind resistance coefficient of the pulse type industrial bag type dust removal system.
Furthermore, the movable pulse injection pipe frame unit 6 is a frame structure provided with two layers of pipes, a plurality of injection ports are arranged on the pipes, the first layer of pipes are a plurality of main injection pipes 9 perpendicular to the rails, the second layer of pipes are a plurality of auxiliary injection pipes 10 parallel to the rails, the injection ports on the main injection pipes 9 and the injection ports on the auxiliary injection pipes 9 are respectively arranged in a matching manner corresponding to a plurality of transversely and longitudinally arranged hole sites on the perforated plate 4, and the injection ports on the main injection pipes 9 and the injection ports on the auxiliary injection pipes 10 can perform one-to-one injection on the filter bags 1 under the plurality of hole sites.
Furthermore, the two sides of the movable pulse spraying and blowing pipe support unit are respectively provided with a high-pressure gas collecting bag and a low-pressure gas distributing bag, the high-pressure gas collecting bag is connected with a fixed gas circuit interface of the gas purifying chamber through a high-pressure gas circuit and a one-way valve, the low-pressure gas distributing bag is connected with the plurality of spraying and blowing openings through a low-pressure gas circuit and a pulse valve, and the high-pressure gas collecting bag is communicated with the low-pressure gas distributing bag through a gas supplementing pipeline, a pressure reducing valve and a one-way valve.
The straight-through type intelligent bag type dust removal system adopts a stepping type dust removal method, and the method comprises the following steps:
(1) the rail shuttle car 7 lifts the movable pulse injection tube frame unit 6 in the first parking chamber 5 and moves to the upper part of the filter bag of a certain area (if the start of the injection cycle is determined, the 'upper part of the filter bag of a certain area' is the upper part of the filter bag of the area nearest to the first parking chamber), and then the rail shuttle car 7 parks the movable pulse injection tube frame unit 6 to make the injection port coincide with the center of the hole site;
(2) the movable pulse blowing pipe frame unit 6 tightly holds the track 8, a one-way valve on a high-pressure gas path is opened, and the high-pressure gas collection bag is rapidly inflated; opening a pulse valve on the low-pressure gas circuit, and performing explosive pulse injection on the filter bag;
(3) after the blowing is finished, the movable pulse blowing pipe frame unit 6 loosens the rail 8, the rail shuttle car 7 lifts and carries the movable pulse blowing pipe frame unit 6 again, the movable pulse blowing pipe frame unit moves to the upper part of the filter bag of the next area, meanwhile, a one-way valve on the air supply pipeline is opened, and air is supplied to the low-pressure steam distribution bag by the high-pressure air collection bag; when the rail shuttle car 7 carries the movable pulse injection tube frame unit 6 and moves to the upper part of the filter bag of the next area, the rail shuttle car 7 stops the movable pulse injection tube frame unit 6 again, the movable pulse injection tube frame unit 6 continues injection work until the sequential injection of the filter bags of all the areas is finished, and the step-by-step dust removal work is finished.
The movable blowing pipe frame unit 6 of the present invention has the function of time-sharing inflation and blowing. The high-pressure air collecting bag and the low-pressure air distributing bag are both provided with digital barometers, and the process of supplying air to the low-pressure air distributing bag by the high-pressure air collecting bag is controlled by measuring the pressure of the air passages of the high-pressure system and the low-pressure system.
When the movable blowing pipe frame unit 6 is used for pulse blowing, the movable blowing pipe frame unit is influenced by the action of reverse impact force to generate vibration. The movable spraying and blowing pipe frame unit is separated from the rail shuttle vehicle when spraying and blowing work, so that the rail shuttle vehicle is protected from direct vibration influence, and the precision of a servo system of the rail shuttle vehicle is ensured; meanwhile, the movable blowing pipe frame unit tightly holds the track during blowing work, and reverse impact force is borne by the whole dust removal system structure, so that the amplitude of the movable blowing pipe frame unit is reduced, and the pneumatic and control system arranged on the movable blowing pipe frame unit is prevented from being influenced. After the pulse injection work is finished, the pneumatic clamping device of the movable injection and blowing pipe frame unit loosens the track, the track shuttle car lifts up and carries the injection and blowing pipe frame unit, and the track shuttle car and the injection and blowing pipe frame unit continue to move after being combined.
Furthermore, the pull-wire type electrostatic dust meters 11 are arranged on the front side and the rear side of the rail shuttle vehicle, and when the main injection pipe 9 injects the filter bags in a certain area, the pull-wire type electrostatic dust meters 11 synchronously perform dynamic dust detection. The computer system compares and analyzes the peak value of the measuring curve of the pull-wire type electrostatic dust meter, and can find whether the suspicious and undamaged filter bag exists or not. When the peak value of the measurement curve of the pull-wire type electrostatic dust meter is larger, the auxiliary injection tube 10 of the movable injection tube frame unit is opened for 2 times of injection, and whether the damaged filter bag exists in the area is further determined.
When the dust gas is filtered by the filter bag, the dust can be adsorbed on the outer surface of the filter bag. When the dust remover performs pulse injection, the injection port of the pulse injection pipe frame unit 6 is moved to be aligned with the opening of the filter bag, pulse explosion injection is performed, dust on the outer surface of the filter bag is shaken off, and the dust falls into a dust collecting hopper 12 on the lower layer of the dust remover. When the filter bag is broken and leaked, expansion effect can occur when the filter bag is blown by pulse explosion, and after explosion, the pressure near a blowing opening is smaller than the peripheral pressure, so that dust gas in a gas flow middle bin is formed and is accelerated to be brought out. The surface of the dust particles is provided with electrostatic charges, when the airflow passes through the electrostatic dust meter, the electrostatic dust meter can sense the electrostatic charges in the airflow, and if the filter bag is damaged, the electrostatic charges in the airflow can be obviously increased. Through such a physical phenomenon, when the movable pulse injection pipe frame unit 6 injects air to different filter bag areas, whether the filter bag is damaged in the current area or not can be judged through comparison of curve peak values measured by the electrostatic dust meter. If the filter bag is not broken, the historical peak values of different measurement areas are basically the same or gradual; if a damaged filter bag exists, the filter bag measurement peak value in the current area is suddenly changed, and then a suspicious filter bag area is found, and because of the factor of dynamic airflow fluctuation, the mobile measurement, especially the static measurement combining the mobile pulse blowing effect, is more accurate than the measurement result of fixed blowing. However, even with this type of moving electrostatic dust monitor, it is not possible to find a certain broken filter bag out of a large number of filter bags, but only a suspicious area. The invention relates to a straight-through intelligent bag-type dust removal system and a technology, which take dynamic electrostatic measurement of an electrostatic dust meter combined with a mobile blowing effect as one of contents of a composite measurement technology.
When the electrostatic dust meter detects that a damaged filter bag exists in a certain area, the mobile detection and plugging robot of the straight-through intelligent bag type dust removal system can be used for accurately positioning and intelligently repairing the damaged filter bag. According to the through type intelligent bag type dust removal system, a second parking chamber 13 is arranged at the other end of a perforated plate 4 (namely, the end of the perforated plate opposite to a first parking chamber 5), a mobile detection and plugging robot 14 is parked in the second parking chamber 13, and a rail shuttle 7 lifts the mobile detection and plugging robot 14 placed in the second parking chamber 13 and carries the mobile detection and plugging robot 14 to a damaged filter bag area for detection and plugging.
The bag-type dust collector realizes the filtration and interception of dust by a plurality of bags. When the dust gas is filtered by the filter bag, the dust can be adsorbed on the outer surface of the filter bag, but when the filter bag is damaged, the dust can directly enter the filter bag through the broken hole and pollute the filter bag; or under the action of the expansion effect during pulse blowing, the dust can be directly sucked into the defective filter bag. The two situations can cause dust to pollute the filter bag, pollution traces are left on the inner surface of the filter bag and the opening of the filter bag, and the pollution traces are gradually deepened and are different from the colors of the normal surrounding filter bag opening. The method is also used for determining the broken filter bag when the cabin opening inspection is carried out on the traditional bag type dust collector manually. In the invention, the rail shuttle vehicle carries a movement detection and plugging robot to move to an area with damaged filter bags, an industrial camera is used for carrying out static image photographing, then the image is subjected to visual analysis, and after the gray level of the image is processed, historical image comparison and entropy calculation are carried out, so that the damaged filter bags can be found out from a plurality of filter bags in the current area, and the position coordinates of the damaged filter bags are determined and recorded. The mobile robot photographing and image analysis method is a mobile static fixed point dust image analysis technology in the mobile composite dust detection technology. The mobile composite dust detection technology consists of a mobile dynamic static dust area detection technology and a mobile static fixed point dust image visual analysis technology. The mobile static fixed-point dust image analysis technology eliminates the influence of air flow disturbance, improves the inspection accuracy, accelerates the inspection speed and efficiency, particularly adopts an Artificial Intelligence (AI) technology, and has higher and higher accuracy and higher speed of the mobile static fixed-point dust image visual analysis through a machine deep learning method.
The movement detection and plugging robot 14 is provided with an X-axis linear unit moving in a direction perpendicular to the track, a Z-axis linear unit capable of being lifted is provided on the X-axis linear unit, and a mechanical finger is provided on the Z-axis linear unit. And the X-axis linear unit is also provided with a static fixed-point dust image visual analysis industrial camera 15.
Further, a plugging tool is arranged on the perforated plate of the second parking chamber 13, the mechanical fingers grab the plugging tool on the perforated plate and move along with the rail shuttle 7, and when the industrial camera 15 determines that the damaged filter bag is located, the mechanical fingers plug the plugging tool into the perforated plate hole where the damaged filter bag is located.
The straight-through type intelligent bag-type dust removal system further comprises a rescue winch 16 arranged in the first parking chamber 5. The rescue winch 16 is provided with a traction steel wire rope, and the other end of the traction steel wire rope is connected with the rail shuttle car 7. When the rail shuttle car works normally, the working mode of the rescue winch system is a passive moment servo control mode, and the steel wire rope is tightened; when the rail shuttle vehicle breaks down, an electromagnetic clutch arranged on the rail shuttle vehicle disconnects a gear from a servo motor and a speed reducer system, the electromagnetic clutch is connected with a power gear, a rescue winch system is converted into an active position servo control mode, the rail shuttle vehicle is pulled to return to a parking chamber on one side of a static air chamber, and a computer system sends a fault signal to a master control chamber to call a repairing person to get to repair. When the movable blowing pipe frame unit and the special movable detection and plugging robot equipment have faults, the rail shuttle vehicles can also respectively transport the movable blowing pipe frame unit and the special movable detection and plugging robot equipment back to respective parking rooms to wait for repair personnel to come for maintenance. In this embodiment, the motor system of the rescue winch system is an ac servo motor, and there are two servo modes: a position servo mode and a force control servo mode, wherein the power of a servo motor is 3.0KW, and the reduction ratio of a speed reducer is 1: 50.
According to the through type intelligent bag type dust removal system, electric sealing doors 17 are arranged among the first parking chamber 5, the second parking chamber 13 and the air purifying chamber 2. When the straight-through type intelligent bag type dust removal system normally operates, the electric sealing door is opened, the parking chamber is communicated with the air purifying chamber, and the rail shuttle car can freely enter and exit the parking chamber and the static air chamber; when the rail shuttle vehicle, the movable spraying and blowing pipe frame unit or the movable detection and plugging robot of the straight-through type intelligent bag type dust removal system have faults, the electric sealing door is closed, the parking chamber is disconnected with the air purifying chamber, and repair personnel quickly maintain equipment and replace parts in the parking chamber. In this embodiment, the electric sealing door is a symmetrical side-hung structure, and a transverse sealing track is installed between the parking chamber and the air purifying chamber. When the electric sealing door is opened, the sealing door moves towards two sides along the sealing track and moves out of the air purifying chamber, and a rubber sealing strip of the sealing door plugs a track gap; when the electric sealing door is closed, the sealing door moves towards the middle along the sealing track 18 until the shaft is closed and closed in the air purifying chamber. The electric sealing door is pushed by an electric push rod, and a motor of the electric push rod is a direct current stepping motor.
The straight-through type intelligent bag-type dust removal system disclosed by the invention has the advantages of side air inlet and side air outlet. Wherein, the air intake square pipe 19 arranged at one side of the dust removal system is communicated with the filter bag bin 2 of the dust removal system, under the action of the rotary fan, negative pressure is formed inside the dust removal system, dust gas is sucked into the filter bag bin 2 from the air intake square pipe 19 by the negative pressure, and then is filtered by the filter bag and enters the air purification chamber 3 at the upper layer of the dust remover; an air outlet square pipe 20 is installed on one side of the dust removal system, one end of the air outlet square pipe 20 is communicated with the air purifying chamber 3, the other end of the air outlet square pipe is connected with an exhaust outlet, and the gas after dust removal is exhausted into the atmosphere.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (11)
1. A straight-through type intelligent bag-type dust removal system comprises a plurality of bag-type dust collectors arranged side by side, wherein each bag-type dust collector is provided with a plurality of filter bags; the bag-type dust removal system further comprises a movable pulse injection pipe frame unit which reciprocates in the air purification chamber to inject a plurality of filter bags.
2. A pass-through intelligent bag house system according to claim 1, wherein the perforated plate extends in the length direction of the bag house system, and the mobile pulse blowing pipe rack unit is placed in the first parking chamber at one end of the perforated plate; the bag-type dust removal system also comprises a track shuttle car, wherein a track parallel to the length direction of the bag-type dust removal system is arranged on the perforated plate, and the track shuttle car slides along the track; the rail shuttle vehicle lifts the movable pulse injection pipe frame unit arranged in the first parking chamber, carries the movable pulse injection pipe frame unit to reciprocate in the air purification chamber, and parks the movable pulse injection pipe frame unit above the bag type dust collector to enable the movable pulse injection pipe frame unit to inject a plurality of filter bags.
3. A pass-through intelligent bag-type dust removal system as claimed in claim 2, wherein the mobile pulse blowing pipe frame unit is a frame structure provided with two layers of pipes, and a plurality of blowing ports are arranged on the pipes; the first layer of pipelines are a plurality of main injection pipes vertical to the track, and the second layer of pipelines are a plurality of auxiliary injection pipes parallel to the track; and the blowing ports on the main blowing pipe and the auxiliary blowing pipe are respectively matched with a plurality of transversely and longitudinally arranged hole sites on the perforated plate.
4. A straight-through intelligent bag-type dust removal system as claimed in claim 3, wherein a high-pressure gas collection bag and a low-pressure steam distribution bag are respectively arranged on two sides of the mobile pulse blowing pipe frame unit, the high-pressure gas collection bag is connected with the fixed gas path interface of the gas purification chamber through a high-pressure gas path and a one-way valve, the low-pressure steam distribution bag is connected with the plurality of blowing ports through a low-pressure gas path and a pulse valve, and the high-pressure gas collection bag is communicated with the low-pressure steam distribution bag through a gas supply line, a pressure reducing valve and a one-way valve.
5. A pass-through intelligent bag-type dust removal system as claimed in claim 3, wherein the front and back sides of the rail shuttle car are provided with a pull-wire type electrostatic dust meter for synchronous dynamic dust detection when the main blowing pipe blows on a certain area; the auxiliary blowing pipe is used for blowing the area twice when the peak value of the measurement curve of the pull-wire type electrostatic dust meter is larger so as to further determine whether the broken filter bag exists in the area.
6. A through type intelligent bag type dust removing system as claimed in claim 2 or 5, wherein the other end of the perforated plate is provided with a second parking chamber, a mobile detecting and plugging robot is parked in the second parking chamber, and the rail shuttle vehicle lifts the mobile detecting and plugging robot placed in the second parking chamber and carries the mobile detecting and plugging robot to the damaged filter bag area for detection and plugging.
7. A pass-through intelligent bag-type dust removing system according to claim 6, wherein the movement detection and plugging robot is provided with an X-axis linear unit moving in a direction perpendicular to the rail, a liftable Z-axis linear unit is provided on the X-axis linear unit, and a mechanical finger is provided on the Z-axis linear unit; and the X-axis linear unit is also provided with a static fixed-point dust image visual analysis industrial camera.
8. A pass-through intelligent bag-type dust removal system as claimed in claim 7, wherein the perforated plate of the second parking chamber is provided with a plugging tool, the mechanical finger grabs the plugging tool on the perforated plate and moves along with the rail shuttle, and when the industrial camera determines that the damaged filter bag is located, the mechanical finger plugs the plugging tool into the perforated plate where the damaged filter bag is located.
9. A pass-through intelligent bag-type dust removal system as claimed in claim 2, further comprising a rescue winch disposed in the first parking chamber, wherein the rescue winch is provided with a traction wire rope, and the other end of the traction wire rope is connected to the rail shuttle.
10. A pass-through intelligent bag house dust removal system as recited in claim 6, wherein electrically-operated sealing doors are provided between the first and second parking chambers and the air-purifying chamber.
11. A step-by-step dust removal method of the straight-through intelligent bag-type dust removal system according to claim 4, wherein the method comprises the following steps:
(1) the rail shuttle vehicle lifts the movable pulse injection pipe frame unit in the first parking chamber and moves to the position above the filter bag of a certain area, and then the rail shuttle vehicle parks the movable pulse injection pipe frame unit to enable the injection port to coincide with the center of the hole site;
(2) the movable pulse blowing pipe frame unit tightly holds the track, a one-way valve on the high-pressure gas path is opened, and the high-pressure gas collection bag is rapidly inflated; opening a pulse valve on the low-pressure gas path, and performing explosive pulse injection on the filter bag;
(3) after the blowing is finished, the movable pulse blowing pipe frame unit loosens the track, the track shuttle car lifts up and carries the movable pulse blowing pipe frame unit again and moves towards the upper part of the filter bag of the next area, and meanwhile, a one-way valve on the air supply pipeline is opened, and air is supplied to the low-pressure steam distribution bag through the high-pressure air collection bag; when the rail shuttle vehicle carries the movable pulse injection pipe frame unit to move to the position above the filter bag of the next area, the rail shuttle vehicle stops the movable pulse injection pipe frame unit again, the movable pulse injection pipe frame unit continues injection work until the sequential injection of the filter bags of all the areas is completed, and the step-type dust removal work is finished.
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| CN202210363020.XA CN114797308B (en) | 2022-04-08 | 2022-04-08 | Straight-through intelligent bag type dust removing system |
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