CN105126479B - Sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online - Google Patents
Sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online Download PDFInfo
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- CN105126479B CN105126479B CN201510640529.4A CN201510640529A CN105126479B CN 105126479 B CN105126479 B CN 105126479B CN 201510640529 A CN201510640529 A CN 201510640529A CN 105126479 B CN105126479 B CN 105126479B
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Abstract
Direct light type leakage detection apparatus, including optical signal launch subsystem, optical signal receiving subsystem, signal processing subsystem, signal display subsystem and Comprehensive Control subsystem are pinpointed online the invention discloses a kind of sack cleaner, wherein：The optical signal launch subsystem is arranged on the two adjacent side walls in the card of sack cleaner casing top, for sending optical signal；The optical signal receiving subsystem is arranged on the side plate relative with optical signal launch subsystem is set of the card of sack cleaner casing top, for receiving the optical signal that optical signal launch subsystem sends.The invention also discloses the leak hunting method for pinpointing direct light type leakage detection apparatus online based on the sack cleaner.Whether the present invention can be there is damaged situation, even if there is multiple filter bag damages in a large amount of filter bags of on-line quick detection deduster, it is also possible to while detect, and the method interlocked by ranks can be accurately positioned and be changed, and strong applicability.
Description
Technical field
The invention belongs to field of Environment Protection, and in particular to Powder gas purify and collection technique field, more specifically, be on
A kind of sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online.
Background technology
While China's economic development, the dust pollution produced by all trades and professions is also on the rise.At present, food, building,
In the production process of the industries such as chemical industry, metallurgy, glass, cement, waste incineration, electric power, substantial amounts of dust can be all produced.In order to net
Change or collect these dust, all trades and professions devise various deduster.Wherein sack cleaner is with its distinctive arresting efficiency
The features such as high, operation is continuous, operating load changes strong adaptability, treatment species that is large-minded, can processing dust is more, has obtained wide
General utilization.
Filter bag is in longtime running, it may appear that different degrees of breakage, tracing it to its cause has：Intensity of the filter bag in weaving is not
One, dropped stitch of the filter bag in sewing, the hook that filter bag is pierced by keel when mounted is damaged, and operationally air cloth ratio is excessive or pulse for filter bag
The strain that atmospheric pressure is too high or the frequency is too high and produces, and filter bag is aging etc. under high temperature, mill high, corrosion.It is how online right
Thousands of filter bags are diagnosed, and are the problems not being solved always.
Existing method or apparatus mainly have following several：The first kind is the detection of bag house outlet gas dust content
Method, such as multi-path laser method, MESA methods, nephelometry, β ray methods, piezoelectric vibration method, are sentenced with exit gas dust-laden total amount
Filter bag is with the presence or absence of breakage in disconnected sack cleaner, but cannot position the position of breakage；Equations of The Second Kind is locellus detection method, such as electric charge
Method, differential pressure method, capacitance method, laser method etc., are which locellus has filter bag damage in can only judging sack cleaner, but cannot
The accurate location of damaged filter bag is positioned, is found after locellus filter bag damage, can only shut down and hundreds of filter bags in the room are taken out one by one
Go out, carry out hand inspection, take a lot of work, time-consuming, laborious；3rd class is detection method one by one, is such as evacuated weight method, Light-guiding Method, i.e., often
Individual cloth sack is all equipped with test point, and this is a huge obstacle for the conventional sack cleaner equipped with pulse backblowing, and device
Complicated, investment is high, applicable surface is narrow, so being difficult to promote in practice.
Therefore, working out online fixed point leakage detection apparatus of the class with universality, and various sack cleaners are applied to, are
Urgent problem in gas purification and assembling sphere.
The content of the invention
The purpose of the present invention is that solution is difficult to what the deduster of a large amount of filter bags was monitored on-line in the prior art
Problem, so that provide a kind of sack cleaner pinpoints direct light type leakage detection apparatus online.
The second aspect of the invention, there is provided pinpoint the inspection of direct light type leakage detection apparatus online based on the sack cleaner
Leakage method.
To achieve the above object, sack cleaner of the invention pinpoints direct light type leakage detection apparatus online includes optical signal launch
Subsystem, optical signal receiving subsystem, signal processing subsystem, signal display subsystem and Comprehensive Control subsystem, its
In：
The optical signal launch subsystem is arranged on the two adjacent side walls in the card of sack cleaner casing top, is used
In sending optical signal；
The optical signal receiving subsystem is arranged at the card top of sack cleaner casing and sets optical signal launch
On the relative side plate of system, for receiving the optical signal that optical signal launch subsystem sends；
The signal processing subsystem is used to receive the optical signal from optical signal receiving subsystem, and the light letter to receiving
Number processed, to determine whether the situation that filter bag is leaked, and sent result to signal display subsystem；
The signal display subsystem is used to show the result from signal processing subsystem, and is in result
Filter bag sends alarm when having leakage；
Comprehensive Control subsystem is communicated with foregoing each subsystem respectively, for carrying out collaboration control to each subsystem
The instruction control in system, single system sequential and space.
According to the present invention, the optical signal launch subsystem is electro-optical signal emitter, and its optical signal for sending includes
Ultraviolet light, visible ray and near infrared light signal.
According to the present invention, the signal receiving subsystem is optical signal receiver, including GaN and ZnS systems sensor, light
Quick diode, phototriode, photo resistance, photocell, photomultiplier tube sensor, vulcanized lead, aluminum selenide, indium arsenide, arsenic
Change antimony, mercury cadmium telluride ternary alloy three-partalloy, germanium silicon compound sensor.
According to the present invention, the signal processing subsystem is a processor, and it is for from signal receiving subsystem
The treatment of optical signal includes denoising, and feature extraction is obscured, counted or Clustering identification, and leakage judges.
According to the present invention, the signal display subsystem includes display screen and acoustic-optic alarm, to show bag-type dusting
The running status of device simultaneously sends audible and visible alarm when leaking.
According to the present invention, the Comprehensive Control subsystem uses programmable logic controller (PLC).
According to a preferred embodiment of the invention, the optical signal launch subsystem is several that be uniformly distributed on the wall of side
Light source, quantity of its quantity with filter bag in row or column is identical, and signal is then provided with the correspondence position of side wall on the other side
Several sensors of receiving subsystem.
According to another preferred embodiment, guide rail, the signal are installed on the side wall of the upper box of the sack cleaner
The sensor of the light source and signal receiving subsystem of launching subsystem may be contained within the guide rail, and can be along slide.
According to another preferred embodiment, the signal transmitting subsystem includes light source and on light source direction of illumination
, several flexible mirrors be arrangeding in parallel, the quantity of the flexible mirror and filter bag be expert at or column direction on quantity
It is identical, in one-to-one relationship；The signal receiving subsystem include sensor and sensor light source recipient it is upward,
Several flexible mirrors be arrangeding in parallel, its quantity is identical with flexible mirror 36, in one-to-one relationship.
According to another preferred embodiment, the signal transmitting subsystem includes light source and the optical fiber with optional optical splitter,
The signal receiving subsystem includes sensor and the optical fiber with optional optical splitter.
It is of the invention that direct light type leakage detection apparatus are pinpointed for sack cleaner leak detection based on the sack cleaner online
Method, is scanned by by row or column to the air above filter bag gas outlet, and the method interlocked by ranks is to thang-kng amount
There is abnormal filter bag to be positioned.
Further, the scanning by row or column sends optical signal by signal transmitting subsystem, coordinates signal to receive son
The mode that system receives optical signal is realized.
According to the present invention, the optical signal that the signal receiving subsystem is received further is located by signal processing subsystem
Reason, the treatment includes denoising, and feature extraction is obscured, counted or Clustering identification, and leakage judges.
According to the present invention, occur also to include the step of sending audible and visible alarm after abnormal filter bag is positioned to thang-kng amount.
Sack cleaner of the invention pinpoints direct light type leakage detection apparatus online and its leak hunting method has the advantages that：
1st, can be whether there is damaged situation in a large amount of filter bags of on-line quick detection deduster, even if there is multiple filter bags
It is damaged, it is also possible to while detect, and the method interlocked by ranks can be accurately positioned and be changed.
2nd, for different cloth bag array ways, such as rounded projections arranged or rectangular arranged are all applicable.
3rd, damaged filter bag can be searched for using various modes, such as full line/entire column type, interlacing/every column, the formula of full line/by column,
Line by line/formula, all standing concentrated type, sparse type emphasis determinant etc. by column, it is all applicable.
4th, strong applicability：Whether the sack cleaner of which kind of form, such as pneumatic (rotation) formula, bag move (rotation) formula, positive-pressure type,
Suction type etc. is all applicable；Whether which kind of purge mode, such as pulse jetting deashing, static pressure reverse gas cleaning, mechanical rapping cleaning dust,
Anti-blow cleaning dust etc. is all applicable；Whether it is which kind of filter bag type, such as flat filter bag, trapezoidal filter bag, cylindrical shape filter bag, plate shaped
Filter bag, concavo-convex collapsible filter bag etc. are all applicable；Whether which kind of filter bag material, such as cotton fiber, wool fibre, synthetic fibers, glass
Glass fiber, PTFE fiber, PPS fibers, polyimide fiber, aramid fiber, composite fibre etc. are all applicable；No matter bag-type dusting
The operating temperature of device, such as normal temperature, 100 DEG C, 150 DEG C, 200 DEG C, 250 DEG C it is all applicable；No matter the pressure height of pulse jet,
Injection form is all applicable using fixed or rotary grade；No matter the air cloth ratio of filter bag is just, all applicable；No matter using what
Signal transmitting light source is planted, perhalogeno lamp, LED incandescent lamps, all applicable such as in visible ray；No matter dust content is high after sock filtration
Low, such as 10mg/Nm3,50mg/Nm3,100mg/Nm3 are all applicable；No matter the particle size of dust after sock filtration, such as
PM2.5, PM5, PM10 etc. are all applicable；No matter the classification of contained dust in its gas, such as metal, nonmetallic, organic,
It is inorganic, flammable etc. all applicable.
5th, the history for possessing filter bag one by one safeguards the record and store function of data, is reviewed with facilitating.
6th, flexibility is high：Can continuously patrol and examine, it is also possible to intermittently patrol and examine, there are various patrol modes can select.
Brief description of the drawings
Fig. 1 is the composition schematic diagram that sack cleaner of the invention pinpoints direct light type leakage detection apparatus online.
Fig. 2 is the 1st schematic diagram of embodiment.
Fig. 3 is the 2nd schematic diagram of embodiment.
Fig. 4 is the 3rd schematic diagram of embodiment.
Fig. 5 shows the 3rd light source and the composition of sensor of embodiment.
Fig. 6 is the 3rd light source and the floor plan of sensor of embodiment.
Fig. 7 is the 4th schematic diagram of embodiment.
Fig. 8 shows the 4th light source and the composition of sensor of embodiment.
Fig. 9 is the floor plan of the leakage detection apparatus of Application Example 2.
Specific embodiment
The present invention is described in further details below in conjunction with specific embodiment.It should be understood that following examples are only used for
The bright present invention is not for restriction the scope of the present invention.
Term explanation：
1st, sink effect：When dust concentration increases in unit-gas, the gas increases the uptake of light, result in logical
The reduction of light quantity；Conversely, when dust concentration reduction in unit-gas, the gas is reduced to the uptake of light, result in thang-kng
The increase of amount；
2nd, scattering effect：When dust concentration in unit-gas or particle diameter change, scattering of the gas to light is not
With.When light passes through dusty gas, part light deviate former direction and to multi-direction dispersive propagation so that rectilinear direction glazing it is logical
Light quantity changes.Scattering has multiple species, such as Rayleigh scattering (it is selective to different light waves), Raman scattering
(various dust differ to the difference on the frequency of light scattering, and the frequency of light wave changes after scattering), Mie scattering (anisotropic system
Number is variant), Compton scattering (newly-increased light wave changes with angle of scattering difference) etc., their scattering mechanism is different,
There are different effects to thang-kng amount.
Embodiment 1
As shown in figure 1, sack cleaner (filter, dust arrester) of the invention pinpoints direct light type leakage detection apparatus, bag online
Include optical signal launch subsystem, optical signal receiving subsystem, signal processing subsystem, signal display subsystem and comprehensive control
Subsystem, wherein：
As shown in Fig. 2 the optical signal launch subsystem 11 is arranged at the top of card 14 two of sack cleaner casing 13
On individual adjacent side wall, for sending optical signal；
The optical signal receiving subsystem 12 is arranged at the top of card 14 of sack cleaner casing 13 and sets optical signal
Launch on the adjacent side plate of side plate of subsystem 11, for receiving the optical signal that optical signal launch subsystem 11 sends；
The signal processing subsystem is used to receive the optical signal from optical signal receiving subsystem 12, and the light to receiving
Signal is processed, and to determine whether the situation that filter bag is leaked, and sends result to signal display subsystem；
The signal display subsystem is used to show the result from signal processing subsystem, and is in result
Filter bag sends alarm when having leakage；
Comprehensive Control subsystem is communicated with foregoing each subsystem respectively, for carrying out collaboration control to each subsystem
The instruction control in system, single system sequential and space.
In the present embodiment, the optical signal launch subsystem 11 is preferably an electro-optical signal emitter, what it sent
Optical signal is including ultraviolet light, visible ray and near infrared light signal etc.；
The signal receiving subsystem 12 is preferably optical signal receiver, including GaN and ZnS systems sensor, photosensitive two
Pole pipe, phototriode, photo resistance, photocell, photomultiplier tube sensor, vulcanized lead, aluminum selenide, indium arsenide, antimony arsenide,
Mercury cadmium telluride ternary alloy three-partalloy, germanium silicon compound sensor etc.；
The signal processing subsystem is a processor, its treatment for the optical signal from signal receiving subsystem
Judge including denoising, feature extraction, fuzzy (statistics, cluster) pattern-recognition, leakage etc.；
The signal display subsystem includes display screen and acoustic-optic alarm, to show the running status of sack cleaner
And audible and visible alarm is sent when leaking；
The Comprehensive Control subsystem can use programmable logic controller (PLC) (PLC).
Sack cleaner shown in Fig. 2 pinpoints direct light type leakage detection apparatus online, and its optical signal launch subsystem 11 and light are believed
Number receiving subsystem 12 is arranged on (inwall or side wall on the side wall of the upper box 13 of sack cleaner (casing of the top of card 14)
), positioned at the top of filter bag exhaust outlet；If as illustrated, optical signal launch subsystem 11 is to be uniformly distributed on the wall of side
Dry light source, is then provided with several sensors of signal receiving subsystem 12 on the correspondence position of side wall on the other side；Letter
Number processing subsystem, signal display subsystem and each subsystem Comprehensive Control subsystem are then arranged on outside sack cleaner.
Sack cleaner of the invention pinpoints direct light type leakage detection apparatus online, and its operation principle is as follows：
When light passes through dusty gas, dust has absorption and scattering effect to light, so as to cause thang-kng amount to change.This
Invention reflects the change of dust concentration using the situation of change of thang-kng amount by measuring interference of the dust to light, so as to judge
Filter bag is with the presence or absence of breakage.
Sack cleaner of the invention pinpoints direct light type leakage detection apparatus online, and its operating process is as follows：
First, the instruction for being sent by operating personnel by Comprehensive Control subsystem, selecting sequence or selects sequence control, and starts
All subsystems；Then, each light source of optical signal launch subsystem 11 sends optical signal, light with the direction direct projection of row or column to
Each sensor of corresponding optical signal receiving subsystem 12, signal receiving subsystem 12 induces corresponding row or column and launched
The light for coming, electric signal is converted into by optical-electronic；When certain filter bag occurs damaged, the dust for having increment in filter pocket mouths is gushed out, this
Meeting occurs and absorptions different before and scattering effect to the light for flowing through filter pocket mouths, so as to the thang-kng amount for causing the row or column occurs
Change；Signal receiving subsystem 2 is differentiated electric signal transmission to signal processing subsystem；Signal processing subsystem is by environment
Noise, equipment (transmitter, receiver, processor itself and conduction auxiliary) noise, algorithm noise etc. are eliminated, to true
Believable data are subject to feature extraction, threshold value are given with fuzzy (statistics, cluster) measure, so as to identify damaged filter bag place
Row or column；Finally, implement positioning and son is shown by signal to there are one or more damaged filter bags by ranks alternating method
System shows and alarms.
Whether row or first detection row are first detected, the specific position of damaged filter bag can be found by the detection of a cycle
Put, and the time is short, can be completed to the thousands of detections of filter bag in several minutes, changes such that it is able to discovery quickly and more
The filter bag of raw leakage.
Embodiment 2
Be illustrated in figure 3 the 2nd embodiment that sack cleaner of the invention pinpoints direct light type leakage detection apparatus online, its with
The difference of embodiment 1 is：It is provided with the side wall of the upper box 23 (casing of the top of card 24) of the sack cleaner and is led
Rail 25, the light source of the signal transmitting subsystem 21 and the sensor of signal receiving subsystem 22 may be contained within the guide rail 25
On, and can be along slide.
Direct light type leakage detection apparatus are pinpointed using the sack cleaner of the present embodiment online, when operating, signal transmitting subsystem
The light source of system 21 and the sensor of signal receiving subsystem 22 synchronous slide on the correspondence position of guide rail 25, when detecting certain
When the thang-kng amount of row or column changes, you can be identified by signal identification subsystem, and then determine damaged filter
Row or column where bag；Finally, positioning is implemented and by signal to there are one or more damaged filter bags by ranks alternating method
Display subsystem shows and alarms.
Embodiment 3
Pinpoint the 3rd reality of direct light type leakage detection apparatus online for sack cleaner of the invention as shown in Figure 4, Figure 5 and Figure 6
Example is applied, it is with the difference of embodiment 1：The signal transmitting subsystem 31 includes light source 35 and on light source direction of illumination
, several flexible mirrors 36 (Fig. 5) be arrangeding in parallel, the quantity of the flexible mirror 36 is expert at or column direction with filter bag
On quantity it is identical, in one-to-one relationship；The signal receiving subsystem 32 includes sensor 37 and the light in sensor 37
Several flexible mirrors 38 (Fig. 5) that source recipient is upward, be arranged in parallel, its quantity is identical with flexible mirror 36, is in
One-to-one relationship.
With reference to the floor map of Fig. 6, direct light type leakage detection apparatus are pinpointed using the sack cleaner of the present embodiment online, when
When detecting 1 row, the 1st row flexible mirror 36,38 is overturn in 45 degree of angles, and the light that light source 35 sends is anti-through flexible mirror 36
The 1st row is incident upon, then corresponding sensor 37 is reflexed to through flexible mirror 38 again；When detecting 2 row, the activity of the 1st row is anti-
Penetrate mirror to overturn in 0 degree of angle, the 2nd row flexible mirror 36,38 is overturn in 45 degree of angles, and the light that light source 35 sends reflects through activity
Mirror 36 reflexes to the 2nd row, then reflexes to corresponding sensor 37 by flexible mirror 38 again；Ibid, detect line by line to most
A line is finished afterwards；Then detect by column as above again.When the thang-kng amount for detecting certain row or column changes, you can logical
Cross signal identification subsystem to be identified, and then determine the row or column where there is damaged filter bag；Finally, interlocked by ranks
Method implements positioning and is shown and alarmed by signal display subsystem to there are one or more damaged filter bags.
Embodiment 4
Pinpoint the 4th implementation of direct light type leakage detection apparatus online for sack cleaner of the invention as shown in Figure 7 and Figure 8
Example, it is with the difference of embodiment 3：The signal transmitting subsystem 41 includes light source 45 and the optical fiber with optional optical splitter
46, the signal receiving subsystem includes sensor 47 and the optical fiber 48 with optional optical splitter；The light source 45 is using near red
Outer light.
When 1 row is detected, the near-infrared light that light source 45 sends selects the 1st row by optional optical splitter, and light is by light
Fine 46 are all-trans is incident upon the 1st row, launches near infrared light, and the sensor 47 of its corresponding optical fiber 48 receives near infrared light；Work as detection
During 2 row, the selected 2nd row light path of optional optical splitter is opened, and near infrared light is all-trans by optical fiber 46 and is incident upon the transmitting of the 2nd row, and its is right
The sensor 47 of the optical fiber 48 of the 2nd row answered receives near infrared light；It is same as above, detect to last column finish line by line；With
Detect by column as above again afterwards.When the thang-kng amount for detecting certain row or column changes, you can by signal identification
System is identified, and then determines the row or column where there is damaged filter bag；Finally, it is damaged to occurring by ranks alternating method
One or more filter bags implement positioning and shown and alarmed by signal display subsystem.
Application Example 1
Sack cleaner of the invention pinpoints direct light type leakage detection apparatus and inhales powder cloth envelop collector for Flour Producing Line online
Filter bag is hunted leak, and light source uses the sterilizing ultraviolet light general to food service industry, installed in cloth envelop collector upper box inner side, using preceding
State the fixed filter bag leakage detection apparatus shown in embodiment 1.
Powder cloth envelop collector is inhaled on the preceding road of Flour Producing Line, and treatment gas flow containing powder is 210000m3/ h, gas temperature is 35
DEG C, concentration containing powder is 3.2g/Nm3.Cloth envelop collector selects pulse blowing type, and filter bag material is non-woven fabrics, 6 rooms is set altogether, often
The filter bag of (17 × 17) Φ 130x5800 of individual room 289, totally 1734 filter bags.Cloth envelop collector outlet dust concentration is 100mg/
Nm3, inhale powder efficiency 96.87%.
The row ultra violet light emitter and ultraviolet light transducer of each room are opened, such as row the 9th of Room the 3rd the 15th is listed existing filter bag and broken
Damage, the ultraviolet light transducer of the row of Room the 3rd the 15th receives ultraviolet light quantity will be reduced, and amplified and be converted to electric signal and be sent at signal
Reason device, through denoising, feature extraction, compare the threshold value of setting after, fuzzy classification identifies that the row of Room the 3rd the 15th has filter bag damage；Change
Behavior is arranged, and opens the row ultra violet light emitter and ultraviolet light transducer of each room, the filter bag damage feature for the row of Room the 3rd the 9th occur, from
And lock the row the 9th of Room the 3rd the 15th and list existing filter bag damage, store on record and submit display, occur the row the 9th of Room the 3rd the 15th on screen
The red bounce flash of row, points out to change.
Application Example 2
The present apparatus is used for 1 300t/h boiler tail sack cleaners filter bag leak detection, and light source uses LED, installed in cloth
Outside bag dust collector casing, using the movable filter bag leakage detection apparatus of previous embodiment 3.
300t/h boiler tail flue gas amount is 520000m3/ h, flue-gas temperature is 150 DEG C, and dust concentration is 8.3g/Nm3.Cloth
Bag dust collector selects pulse blowing type, and filter bag material is PPS, 8 rooms is set altogether, (17 × 17) Φ 150x8000 of each room 289
Filter bag, totally 2312 filter bags.Sack cleaner outlet dust concentration is 35mg/Nm3, efficiency of dust collection 99.58%.
As shown in figure 9,8 rooms are divided into two rows, each 4 rooms are often arranged, the 1st, Room the 5th sets unilateral flexible mirror 7, and set
Visible light source LED 1；Between Room 1st and the 2nd, the 5th and the 6th bilateral activity speculum 7 is set between Room, and set visible ray biography
Sensor photodiode 2；Between Room 2nd and the 3rd, the 6th and the 7th bilateral activity speculum 7 is set between Room, and set visible light source
1；Between Room 3rd and the 4th, the 7th and the 8th bilateral activity speculum 7 is set between Room, and set visible light sensor 2；4th, the 8th
Room sets unilateral flexible mirror 7, and sets visible light source 1.
Open the 1st, 4,5, the row LED 1 of Room 8 and photodiode 2, the instruction of which row is sent by control system.Inspection
When surveying 1 row, the upset of the 1st row flexible mirror is in 45 degree of angles, and light reflexes to the 1st row, the activity of its corresponding sensing recipient 2
Speculum is also overturn in 45 degree of angles；When detecting 2 row, the upset of the 1st row flexible mirror is in 0 degree of angle, and the 2nd row flexible mirror is turned over
45 degree of angles are transmitted, light reflexes to the 2nd row, the flexible mirror of its corresponding sensing recipient 2 is also overturn in 45 degree of angles；Ibid,
Detect line by line to the 17th row and finish.For example when the row filter bag of the 5th the 3rd row of Room the 14th occurs damaged, there is thang-kng in the row of Room the 5th the 3rd
Decay, amplifies and is converted to electric signal and be sent to signal processor, through denoising, feature extraction, compares the threshold value of setting, statistical estimation
Classification and Identification goes out the row of Room the 5th the 3rd filter bag damage；Open the 2nd again, 3,6, the row of Room 7, detected line by line by said process, do not send out
Existing thang-kng amount change；Then detected through row by column as procedure described above, can similarly find the row filter bag of Room the 5th the 14th and breakage occur.
Thus the locking row the 14th of Room the 5th the 3rd lists existing filter bag damage, stores on record and submits display, the appearance row of Room the 5th the 3rd the on screen
The red bounce flash of 14 row, points out to change.
In the present embodiment, the upset of flexible mirror can be by the way of energization magnetic patch magnetically attractive, or deceleration transmitter
Plus the mode of cam link is realized, these are all known in the art, also where innovative point not of the invention, therefore not
Repeat again.
Application Example 3
The present apparatus is used for 1 group of bag collector filter bag leak detection of quartzy airslide disintegrating mill, and light source uses near infrared light, installs
It is external in bag collector top box, using the light guide type filter bag leakage detection apparatus of previous embodiment 4.
Quartzy airslide disintegrating mill is 1 group and shares a bag collector with 6, and every air-flow crushing fan delivery is
4800Nm3/ h, processed silica flour particle diameter is between 0.15~0.8mm, product cut size is d97：10~100 microns.Processing
Silica flour afterwards first passes through cyclone dust collectors one-level prefiltration, then by two grades thin filterings of bag collector, bag collector enters
The gas concentration containing powder of mouth is about 10.8g/Nm3.Bag collector sets 4 rooms, the filter of Φ 100x2000mm of each room 225
Bag, totally 900 filter bags.Bag collector outlet dust concentration is 120mg/Nm3, clearance is 99%.
4 rooms are divided into two rows, often arrange each 2 rooms, and the 1st, Room 3 set the optical fiber with optional optical splitter, and set near-infrared
Light source；Between Room 1st and the 2nd, the 3rd and the 4th the optical fiber with optional optical splitter is set between Room, and set near infrared sensor；
2nd, Room 4 set the optical fiber with optional optical splitter, and set near-infrared light source.
Turn on the 1st, 2,3, the row near-infrared lamp and lead zirconate titanate sensor of Room 4, by control system send which room which
Capable instruction.When certain 1 row of room is detected, near-infrared light selects the 1st row, light to be totally reflected by optical fiber by optional optical splitter
To the 1st row, launch near infrared light, its corresponding sensor receives near infrared light；When 2 row is detected, optional optical splitter choosing
Fixed 2nd row light path is opened, and near infrared light is all-trans by optical fiber and is incident upon the transmitting of the 2nd row, and its corresponding 2nd line sensor is received closely
Infrared light；It is same as above, detect line by line to the 15th row and finish.Typically can simultaneously be detected with opposite dual chamber.Such as row of Room the 1st the 11st
When 4th row filter bag occurs damaged, there is the decay of light in the row of Room the 1st the 11st, amplifies and is converted to electric signal and be sent to signal processor,
Temperature compensated, denoising, feature extraction, the threshold value for comparing setting, Cluster Classification identify that the row of Room the 1st the 11st has filter bag damage；
The 2nd, row of Room the 4th is opened again, is detected line by line by said process, do not it is found that thang-kng amount changes；Then as procedure described above by column
Detected through row, can similarly find the row filter bag of Room the 1st the 4th and breakage occur.Thus the locking row the 4th of Room the 1st the 11st is listed existing filter bag and is broken
Damage, store on record and submit display, the red bounce flash for occurring the row of the 1st the 11st row of Room the 4th on screen points out to change.
Why be referred to as a class, be because this patent is numerous kinds of method integrations, and in each method, certain part
Move in other methods, new method can be produced again.In this regard, further describing for specific implementation, only says for general character portion
Point, this is not to the limitation of scope of patent protection.
Claims (10)
1. a kind of sack cleaner pinpoints direct light type leakage detection apparatus online, it is characterised in that including optical signal launch subsystem, light
Signal receiving subsystem, signal processing subsystem, signal display subsystem and Comprehensive Control subsystem, wherein：
The optical signal launch subsystem is arranged on the two adjacent side walls in the card of sack cleaner casing top, for sending out
Optical signals；
The optical signal receiving subsystem is arranged at the card top of sack cleaner casing and sets optical signal launch subsystem
On relative side plate, for receiving the optical signal that optical signal launch subsystem sends；
The signal processing subsystem be used for receive the optical signal from optical signal receiving subsystem, and to receive optical signal enter
Row treatment, to determine whether the situation that filter bag is leaked, and sends result to signal display subsystem；
The signal display subsystem is used to show the result from signal processing subsystem, and is filter bag in result
Alarm is sent when having leakage；
Comprehensive Control subsystem is communicated with foregoing each subsystem respectively, for carrying out Collaborative Control, list to each subsystem
The instruction control in system sequence and space；
Wherein, the optical signal launch subsystem and optical signal receiving subsystem are selected from one kind of following two modes：
1) guide rail is installed on the side wall of the upper box of the sack cleaner, the light source of the optical signal launch subsystem and
The sensor of optical signal receiving subsystem may be contained within the guide rail, and can be along slide；
2) the optical signal launch subsystem include light source and on light source direction of illumination, be arranged in parallel several activity
Speculum, quantity and the filter bag of the flexible mirror be expert at or column direction on quantity it is identical, in one-to-one relationship；It is described
Optical signal receiving subsystem include sensor and sensor light source recipient is upward, several activities that are be arrangeding in parallel are anti-
Mirror is penetrated, its quantity is identical with flexible mirror, in one-to-one relationship.
2. sack cleaner as claimed in claim 1 pinpoints direct light type leakage detection apparatus online, it is characterised in that：The optical signal
Transmitting subsystem is electro-optical signal emitter, and the optical signal that it sends includes ultraviolet light, visible ray and near infrared light letter
Number.
3. sack cleaner as claimed in claim 1 pinpoints direct light type leakage detection apparatus online, it is characterised in that：The optical signal
Receiving subsystem is optical signal receiver, including GaN and ZnS systems sensor, photodiode, phototriode, photosensitive electricity
Resistance, photocell, photomultiplier tube sensor, vulcanized lead, aluminum selenide, indium arsenide, antimony arsenide, mercury cadmium telluride ternary alloy three-partalloy, germanium silicon are answered
Close sensor.
4. sack cleaner as claimed in claim 1 pinpoints direct light type leakage detection apparatus online, it is characterised in that：The optical signal
Processing subsystem is a processor, and it includes denoising, feature for the treatment of the optical signal from optical signal receiving subsystem
Extract, obscure, count or Clustering identification, and leakage judges.
5. sack cleaner as claimed in claim 1 pinpoints direct light type leakage detection apparatus online, it is characterised in that：The signal shows
Show that subsystem includes display screen and acoustic-optic alarm, to show the running status of sack cleaner and send when leaking
Audible and visible alarm.
6. sack cleaner as claimed in claim 1 pinpoints direct light type leakage detection apparatus online, it is characterised in that：The comprehensive control
Subsystem uses programmable logic controller (PLC).
7. the sack cleaner any one of claim 1-6 pinpoints direct light type leakage detection apparatus for sack cleaner online
The method of leak detection, it is characterised in that：Methods described is scanned by by row or column to the air above filter bag gas outlet, and leads to
Cross the method that ranks interlock abnormal filter bag occurs to thang-kng amount and position.
8. method as claimed in claim 7, it is characterised in that：The scanning by row or column is sent out by optical signal launch subsystem
Optical signals, the mode for coordinating optical signal receiving subsystem to receive optical signal is realized.
9. method as claimed in claim 8, it is characterised in that：The optical signal that the optical signal receiving subsystem is received is by letter
Number processing subsystem is further processed, and the treatment includes denoising, feature extraction, is obscured, statistics or Clustering are recognized, and
Leakage judges.
10. method as claimed in claim 7, it is characterised in that：Occur also to be wrapped after abnormal filter bag is positioned to thang-kng amount
Include the step of sending audible and visible alarm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640529.4A CN105126479B (en) | 2015-09-30 | 2015-09-30 | Sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640529.4A CN105126479B (en) | 2015-09-30 | 2015-09-30 | Sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105126479A CN105126479A (en) | 2015-12-09 |
| CN105126479B true CN105126479B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510640529.4A Active CN105126479B (en) | 2015-09-30 | 2015-09-30 | Sack cleaner pinpoints direct light type leakage detection apparatus and leak hunting method online |
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| Country | Link |
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| CN (1) | CN105126479B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107149832B (en) * | 2017-06-21 | 2018-04-03 | 江苏蓝天环保集团股份有限公司 | A kind of dedusting filtering bag cage with self-checking function |
| CN107198909B (en) * | 2017-07-18 | 2018-04-24 | 江苏鼎盛滤袋有限公司 | A kind of dedusting filtering bag for including optical detection function |
| CN107918161A (en) * | 2017-11-06 | 2018-04-17 | 江门市众能电控科技有限公司 | A kind of workpiece neglected loading monitoring system and its detection method based on infrared induction |
| CN109731406A (en) * | 2019-01-31 | 2019-05-10 | 江苏绿叶环境工程集团有限公司 | A kind of pulse bag type dust collector |
| CN110368749A (en) * | 2019-07-12 | 2019-10-25 | 上海电机学院 | A kind of sack cleaner dust-removing control system and method |
| CN113041727A (en) * | 2021-03-25 | 2021-06-29 | 包头钢铁（集团）有限责任公司 | Method for checking damage of dust removal cloth bag |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304492A (en) * | 1979-12-07 | 1981-12-08 | Standard Havens, Inc. | Method and apparatus for detecting leaks in filter bags of a baghouse |
| CN102539091A (en) * | 2011-12-21 | 2012-07-04 | 合肥工业大学 | Filter bag breakage detector for bag type dust remover |
| CN102764550A (en) * | 2012-08-02 | 2012-11-07 | 中冶赛迪工程技术股份有限公司 | Leakage detecting device of bag-type dust remover and leakage detecting method thereof |
| CN104492184A (en) * | 2014-12-23 | 2015-04-08 | 常熟市矿山机电器材有限公司 | Leakage detecting and alarming system of normal-temperature bag-type dust collector |
| CN205055664U (en) * | 2015-09-30 | 2016-03-02 | 上海毅帆环保科技有限公司 | Bag collector direct projection type leak hunting device of fixing a point on line |
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