CN103196779A - One-dimensional mode fly ash on-line carbon measurement device by electromagnetic firing method - Google Patents
One-dimensional mode fly ash on-line carbon measurement device by electromagnetic firing method Download PDFInfo
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- CN103196779A CN103196779A CN2013100858427A CN201310085842A CN103196779A CN 103196779 A CN103196779 A CN 103196779A CN 2013100858427 A CN2013100858427 A CN 2013100858427A CN 201310085842 A CN201310085842 A CN 201310085842A CN 103196779 A CN103196779 A CN 103196779A
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 239000010881 fly ash Substances 0.000 title abstract description 6
- 238000010304 firing Methods 0.000 title abstract 3
- 238000005070 sampling Methods 0.000 claims abstract description 35
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 3
- 238000001354 calcination Methods 0.000 claims description 48
- 239000000428 dust Substances 0.000 claims description 44
- 239000007789 gas Substances 0.000 claims description 43
- 238000012360 testing method Methods 0.000 claims description 22
- 230000006698 induction Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 10
- 230000003189 isokinetic effect Effects 0.000 claims description 8
- 230000009347 mechanical transmission Effects 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 239000002956 ash Substances 0.000 abstract description 53
- 238000010438 heat treatment Methods 0.000 abstract description 29
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a one-dimensional mode fly ash on-line carbon measurement device by an electromagnetic firing method. The one-dimensional mode fly ash on-line carbon measurement device comprises a measurement cabinet and a control cabinet (which comprises a main unit system and a high-frequency electromagnetic machine). The one-dimensional mode fly ash on-line carbon measurement device has the advantages that 1) compared with the conventional three-dimensional mode, the one-dimensional mode transmission structure has the advantages that a circumferential motion platform mechanism is eliminated, and a linkage mechanical device is eliminated; working positions are reduced from 12 to 3; the total transmission distance is reduced by 90 percent; conventional faults such as mechanical locking, transmission offside and control ineffectiveness are completely avoided; due to a draw-type design, mounting, debugging, maintenance and manual ash collection are facilitated; maintenance is nearly avoided; 2) by high-frequency electromagnetic firing and heating, energy saving, environment friendliness and high efficiency are realized; the one-dimensional mode fly ash on-line carbon measurement device can adapt for a site severe environment for a long time; the reliability and the precision are high, and the service life is long; 3) on the basis of the conventional equal-speed sampling, self-extraction sampling is added, so that ash taking acceleration is increased, and the application range is wide; and 4) an ash collection and discharging integrated module port is designed, so that an independent ash discharging pipeline is eliminated.
Description
Technical field
What the present invention relates to is a kind of station boiler flyash carbon content on-line testing apparatus, a kind of carbon testing device that adapts to various coal blendings particularly, a kind of isokinetic sampling of employing and the sampling mode that combines from the odd test sampling, utilize the method calcination of high-frequency electromagnetic heating, and by being close to non-maintaining one dimension mechanical transmission, finish the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern of sampling to flying dust, calcination, weighing measurement continuously.
Background technology
At present, external commonly used carbon testing device belongs to " cold ash sample microwave measurement ", and its method of gathering flying dust is the flying dust in the flue to be carried out bypass cooling back gather or directly gather ash sample in the ash bucket.And domestic adopt " hot ash sample microwave measurement ", the flying dust of gathering is the heat ash in the flue, its acquisition method has impacting type sampling and Venturi tube isokinetic sampling. moreIn application facet, because the fast characteristics of flying dust temperature high flow rate, cause measuring equipment grey pipeline dewfall and obstruction to occur getting easily, therefore measuring equipment is in the requirement that is difficult to reach the user aspect measuring accuracy and the maintenance, in addition, the microwave carbon determination can not adapt to the flying dust carbon determination requirement under the many coal burnings in domestic fuel-burning power plant.
In recent years, the calcination loss method flying dust carbon determination of being researched and developed by electric company in the continent, former Nanjing put into operation in power plant, and calcination method carbon determination can adapt to the variation of coal, and measuring accuracy is higher.After Continental AG stopped production, technology was lost to the producer that forms a complete production network fully, and was the product of the supporting producer of buying mostly from company's product sold that the personnel that Continental AG is walked out successively establish, and wherein had only a company to carry out the transition to independent production.Though design improves to some extent to original system, but mainly be the improvement to the material application facet, on the whole, there is not new breakthrough at technical elements, especially aspect physical construction, still the physical construction (see figure 7) that has followed " three dimensional pattern ", its transmission needs the circumferential transmission of rotating disk to assist a ruler in governing a country with the displacement movement of interlock in conjunction with moving up and down of hoistable platform again could deliver to crucible corresponding measurement point, also need an independently ash discharge pipeline, and the resistance wire heating furnace of a uninterrupted heating, it is low to measure complexity and reliability, failure rate is very high, almost is difficult to guarantee to measure at the scene failure-free operation 1-2 month, and we we can say, online calcination carbon testing device does not have a measuring equipment that can deserve to be called on the practical application meaning at present.
Summary of the invention
What the present invention proposed is the online carbon testing device of a kind of dimension orthoscopic electromagnetism calcination method flying dust, its objective is at above-mentioned application present situation, and be simplest and dependable " dimensional pattern " with the gearing architecture advances; Adopt advanced high-frequency electromagnetic incinerator to replace original resistance wire type of heating; Transform the stopple coupon increase and take out system certainly, and designed and received ash and the integrated module port of ash discharge, save independently ash discharge pipeline, utilize on-the-spot instrument pressurized air, realize quick ash discharge by blowing the grey method that combines with the suction ash.Mechanical transmission and conflagration technology and high-accuracy weighing technology are really accomplished online real-time detection in conjunction with Computer Processing reliably.
Technical solution of the present invention: the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern, its structure are to comprise measuring rack and control rack; Described measurement rack is with sampling equipment and case is measured in calcination and balance attaches together in a rack case, and described control rack is that industrial control host system, high-frequency signal machine, cooling water tank, source of the gas pipe valve case are attached together in a rack.
Advantage of the present invention: 1) three dimensional pattern with traditional physical construction " circumferential movement "+" moving up and down " is simplified to a dimensional pattern, reduce a motion platform and corresponding motor, also reduced the gearing of a cover interlock, the working position reduces to 3 points from 12 points, the total distance of transmission reduces 90%, it is offside and control faults such as malfunctioning fundamentally to have stopped common mechanical bite and transmission, can accomplish to measure reliably and the equipment use is close to non-maintaining; 2) adopt advanced high-frequency electromagnetic calcination heating to replace original resistance wire heating, the characteristics of such electromagnetism type of heating are that fast evenly energy-conserving and environment-protective, calcination do not need warm, do not need uninterrupted heating yet.Can adapt to the physical construction of simplifying and can adapt to the overall process that calcination is measured better, improve flying dust measuring reliability and measuring accuracy greatly.In addition, only to the crucible heating, body of heater produces heat hardly, need not take corresponding cooling measure, has avoided the thermal value of resistance wire heating furnace self to the influence of equipment, longer service life in the high-frequency electromagnetic heating; 3) to the improvement of stopple coupon, increased on isokinetic sampling's basis and to have extracted sample certainly, surpass 10 minutes when the isokinetic sampling reaches the time, but when receiving flying dust insufficient total amount 1 gram, system will start automatically from taking out system.After being to utilize on-the-spot instrument with pressurized air process reduced pressure treatment, the system of taking out send the induction tunnel afterbody, in order to the flue gas flow rate in an amount of quickening sampling equipment, reach the effect of accelerating to receive ash, avoid insecure measurement of ashless few ash, accelerate sense cycle, wide accommodation.4) transformed sampling line, successfully designed and received ash and the integrated module port of ash discharge, the ash discharge pipeline has been used the grey pipeline of existing receipts, does not need to dispose independent and complicated dust removing system, has further simplified system architecture.Dust removing system is directly to utilize on-the-spot instrument pressurized air, synchronously pressurized air is sent into induction tunnel afterbody gas source interface when the unlatching ash releasing tube blows ash, takes the quick ash discharge of mode of pressure-vaccum combination.Adopt the method calcination flying dust of high-frequency electromagnetic heating, replace traditional resistance wire heating furnace calcination flying dust.Advantage be heating fast evenly, can in rugged environment, work for a long time, calcination need not warm, also need not adopt the mode calcination of uninterrupted heating continuously, energy-conserving and environment-protective.Adopt the method calcination flying dust of high-frequency electromagnetic heating, replace traditional resistance wire heating furnace calcination flying dust.Advantage be heating fast evenly, can in rugged environment, work for a long time, calcination need not warm, also need not adopt the mode calcination of uninterrupted heating continuously, energy-conserving and environment-protective.
Description of drawings
Accompanying drawing 1 is the online carbon testing device system architecture of the electromagnetism calcination method flying dust synoptic diagram of a dimensional pattern.
Accompanying drawing 2-1 is the scheme of installation of measuring rack.
Accompanying drawing 2-2 is the side view of accompanying drawing 2-1.
Accompanying drawing 3 is structural representations of sampling equipment.
Accompanying drawing 4 is mechanical transmission structure synoptic diagram of a dimensional pattern.
Accompanying drawing 5 is perspective view of Fig. 4.
Accompanying drawing 6 is structural representations of control rack.
Accompanying drawing 7 is mechanical transmission structure synoptic diagram of existing three dimensional pattern.
Among the figure 1 is motor, the 2nd, guide rod, the 3rd, drive lead screw, the 4th, receive the ash discharge base, the 5th, gas source interface, the 6th, crucible, the 7th, radio-frequency coil, the 8th, electromagnetic oven body, the 9th, the motion supporting plate, the 10th, electronic balance, the 11st, guide rail, the 12nd, stopple coupon, the 13rd, induction tunnel, the 14th, rectangular flange, the 15th, walling of flue, the 16th, heat-insulation layer, the 17th, outer casing, the 18th, rain-proof shelter, the 19th, cyclone dust collector, the 20th, case is measured in calcination, the 21st, mounting bracket, the 22nd, the industrial control host system, the 23rd, the touch-screen colour display screen, the 24th, source of the gas pipe valve case, the 25th, the high-frequency electromagnetic machine, the 26th, cooling water tank, the 27th, terminal box, the 28th, vacuum noz(zle), the 29th, regulate jet pipe, the 30th, gas outlet, the 31st, web joint, the 32nd, receive ash pipe, the 33rd, ash releasing tube, the 34th, electric furnace, the 35th, rotating disk, the 36th, the ash discharge push rod, the 37th, receive grey push rod, the 38th, the calcination push rod, the 39th, the conduit of weighing, the 40th, lifting screw, the 41st, the rotating disk connecting rod, the 42nd, hoistable platform, the 43rd, the guide rod mounting hole.
Embodiment
The online carbon testing device of electromagnetism calcination method flying dust of contrast accompanying drawing 1, one dimensional pattern, its structure are to comprise measuring rack and control rack; Described measurement rack is with sampling equipment and case is measured in calcination and balance attaches together in a rack case, and described control rack is that industrial control host system, high-frequency signal machine, cooling water tank, source of the gas pipe valve case are attached together in a rack.
Contrast accompanying drawing 2-1,2-2, in the described measurement rack, top is sampling equipment, and the middle part is that case 20 is measured in calcination, and the bottom is electronic balance 10; Electronic balance 10 passes through to be connected with the rack bottom after four rubber isolator dampings; Measuring rack is installed on the measurement point selected on vertical gas pass or the horizontal flue; In scheme of installation, identified measurement point relevant walling of flue 15, heat-insulation layer 16, outer casing 17, rain-proof shelter 18 and and rectangular flange 14 and mounting bracket 21 belong to mounting material.Rain-proof shelter 18 1 ends and walling of flue welding are fixing; One end of mounting bracket 21 and walling of flue welding are fixing, other end fixation measuring rack.
Contrast accompanying drawing 3, the structure of described sampling equipment comprises stopple coupon 12, induction tunnel 13, cyclone dust collector 19 and receives ash discharge base 4, wherein stopple coupon 12 joins by gas outlet 30 and induction tunnel 13, stream particle collector 19 and the 4 corresponding settings of receipts ash discharge base, sampling equipment is to be connected with rectangular flange 14 1 ends by stationary barrier, and the other end of rectangular flange 14 and walling of flue welding are fixing; This is fixing also to be to measuring the fixing of rack.Different with traditional isokinetic sampling's equipment is that (1) gas outlet increase has designed the source of the gas port, be used for connecting post-decompression pressurized air, provide from taking out the source of the gas of system, (2) concrete structure of receipts ash discharge base design is the base that the receipts ash pipe of garden column is made into the important actor shape, the centre is that columned hole is used for receiving ash, the right below the hole increases the ash-hole of a 5mm, and guides to the gas source interface of the right side central of base.Can satisfy and receive grey requirement, can when ash discharge, provide on-the-spot pressurized air again.
Because flowing fast, the flue gas of heat formed negative pressure with extraneous air, and the negative pressure of induction tunnel afterbody will be much larger than the negative pressure of stopple coupon 12 afterbodys, the afterbody of above-mentioned two pipes is connected by gas outlet 30, make flue gas produce by vacuum noz(zle) 28 beginnings, to the induction tunnel afterbody, the flue gas that flow back in the flue by induction tunnel flows through stopple coupon.When flue gas stream process cyclone dust collector 19, cause rotational flow to rise again, flying dust drops in the collision repeatedly with cyclone dust collector 19 inwalls and receives ash discharge base 4.
It is a drawer structure design that case is measured in described calcination, and it comprises gear train and high-frequency electromagnetic oven and the crucible of a dimensional pattern.Top board and the base plate of case all is " U " shape, and top board and base plate are inserted into the bottom of receipts ash discharge base and the bottom of balance on goods and services respectively.Be fixed on the guide rail 11.
Described high-frequency electromagnetic oven, its body of heater adopt the processing of rectangular parallelepiped monoblock asbestos, open cylindrical hole between two parties, one surveys fluting inserts radio-frequency induction coil and fixing, be connected with the high-frequency electromagnetic generator with the high-frequency water-cooling flexible cable, have the source of the gas purge hole all around, be used for the cooling crucible; 4 bolt interfaces are arranged at the bottom, are used for fixing
Connect electromagnetic oven and motion supporting plate.Crucible is placed in the middle cylindrical hole of electromagnetic oven body.
Contrast accompanying drawing 4,5, the gear train of a described dimensional pattern, comprise motor 1, guide rod 2, drive lead screw 3, motion supporting plate 9 reaches U-shaped top board and base plate up and down, motor 1 and drive lead screw 3 join, drive lead screw 3 joins with motion supporting plate 9, two ends are fixed on top board and the base plate, the elastic pressuring spring nut has been adopted in design, make platform move to when receiving ash discharge point working point, can produce enough snap-in forces, satisfy crucible and the seal request of receiving between the ash discharge base when receiving ash discharge, four guide rod 2 two ends are fixed on top board and the base plate, and the employing flange does not have oily lining and is connected guiding with motion platform.During work, the motion supporting plate drives electromagnetic oven crucible is delivered to corresponding surveying work point.
The gear train of one dimensional pattern does not have complicated parts, the stable and bite not of transmission, and dependable performance can be competent at the site environment requirement, accomplishes to be close to non-maintaining.Its key element is that electromagnetic oven is connected with the transmission platform rigidity, obtains a dynamic heating furnace, can move to the working point of receiving ash discharge and weighing with platform after electromagnetic oven is finished calcination, and measuring process has only 3 working points, transmission ultimate range＜8cm.
When the motor-driven screw mandrel rotates, and then drive motion supporting plate 9 and do the upstream or downstream motion, up drive crucible 6 is combined closely to finish and is received ash or ash discharge operation with receiving ash discharge base 4, descendingly allows crucible 6 drop on fully on the electronic balance 10 to finish the operation of weighing; Finish electromagnetism heating calcination operation in the centre position.Crucible is placed in the middle cylindrical hole of electromagnetic oven body, and radio-frequency coil is embedded in the body of heater.Transmission position under this dimensional pattern is 3 working points on the straight line, only needs a motor-driven, simple and direct integral structure reliability height.
The unique system of taking out certainly and dust removing system: surpass 10 minutes when the isokinetic sampling reaches the time, but receive that when flying dust insufficient total amount 1 restrains, system will start automatically from taking out system.After being to utilize on-the-spot instrument with pressurized air process reduced pressure treatment, the system of taking out send the induction tunnel afterbody, in order to accelerate sample rate.Dust removing system is directly to utilize on-the-spot instrument pressurized air, when blowing ash, the unlatching ash releasing tube synchronously pressurized air is sent into induction tunnel afterbody gas source interface, take the quick ash discharge of mode of pressure-vaccum combination, do not need to dispose independently dust removing system, further simplified system architecture.
The control signal of industrial control host has upstream and downstream and the start stop signal of drive motor in the switching value signal, gear train of switching value signal, the micro pump in the cooling water tank 26 of power supply of switching value signal, high-frequency electromagnetic machine 25 of 2 solenoid valves in the source of the gas pipe valve case 24.The radiator fan of rack is independent control, and terminal box 27 is transit ports of power supply and signal cable.
The signal output part of the control source of the gas of industrial control host inserts by the A solenoid valve in the source of the gas pipe valve box and measures the gas source interface on the receipts ash discharge base in the sampling equipment in the cabinet, the signal output part of the controlled pressure of industrial control host inserts by the reduction valve in the source of the gas pipe valve box and measures the induction tunnel afterbody source of the gas port in the sampling equipment in the cabinet, the signal input part of the drive motor in the dimensional pattern mechanical transmission structure on the gear train platform in the signal output part connection measurement rack of the control gear train work of industrial control host, the signal output part of measuring the electronic balance in the rack connects the weighing-up wave input end of industrial control host, first signal input part of the high-frequency signal output termination high-frequency signal machine of industrial control host, the signal output part of high-frequency signal machine inserts high-frequency electromagnetic oven, the signal output part of cooling circulating water connects the secondary signal input end of high-frequency signal machine by micro pump, the demonstration signal output part of industrial control host connects the signal input part of display, and the signal output part of the control cooling circulating water of industrial control host connects the cooling circulating water signal input part; Industrial control host is accepted boiler start/ stop, is thrown oily signal, industrial control host output alarm, DCS communication signal, input electrical source of power signal; Pressurized air enters sampling equipment by A solenoid valve, B solenoid valve.
Described industrial control host is ground the miniature industrial computer of D2500 that China produces by Taiwan.
Described high-frequency signal machine, selecting peak power for use is the TLG type product of 7kW.High-frequency induction heating is the alternating current that the 50HZ alternating current is converted to frequency 100-250kHZ, utilizes electromagnetic induction principle, is applied to the crucible of graphite material by telefault, utilizes the eddy effect heating.Its heating characteristics are thermal efficiency height, heat up rapid, energy-conserving and environment-protective, safe and reliable, can work in rugged environment for a long time.
During work, 1) introduce the female pipe of source of the gas source of the gas, through source of the gas pipe valve case, send 2 road sources of the gas to measuring cabinet, a road on-the-spot pressure gas source wherein is used for ash discharge, and another road is used for from extracting the sample system through the source of the gas of decompression; 2) introduce the power supply general supply, be used for industrial computer, colour display screen, ratio-frequency alternator, the micro pump that reaches cooling tank and fan power supply, and be distributed to the drive motor of measuring in the rack.Give the high-frequency electromagnetic oven of measuring in the case by high-frequency electromagnetic machine output high-frequency current; 3) introduce boiler start/ stop signal and throw oily signal, be used for control protection sampling equipment; 4) show that in real time measurement data comprises high-carbon warning and equipment self-inspection signal and communication DCS system.
Workflow
1) Kong crucible is weighed;
2) ash sample in the collecting flue is in crucible;
3) detect ash amount and heating, drying again high temperature sintering weigh;
4) calculate the carbon containing value at the scene switch board show and be transported to DCS;
5) ash discharge is in flue;
6) enter measurement next time.
When unburned carbon in flue dust＞15%, system in time sends high-carbon and reports to the police, and this moment, trend curve was one 15% horizontal line, but still has real-time carbon content data recording in the data storage.Fault alarm has stifled ash to report to the police and cooling water inflow is reported to the police.When device is reported to the police, can eject automatically and safeguard suggestion.
Realize that function comprises 1) numerical value and curve demonstration in real time; 2) mean values shows with rod figure; 3) historical carbon content curve is recollected; 4) with DCS system communication function; 5) the carbon content off-line data is browsed; 6) has the function of manually staying ash; 7) high-carbon is reported to the police and fault alarm.
Performance parameter
1) measurement range: 0～30%(carbon content)
2) measuring error: ± 0.3%-0.4%(carbon content≤8% o'clock)
± 0.4%-0.6%(8%＜carbon content≤15% o'clock)
During ± 0.6%-1.0%(15%＜carbon content)
3) sense cycle: 8-12 minute (it is fixed to look grey flow)
4) signal output:
4～20m carbon content signal that analog quantity----2 tunnel is isolated
Switching value----2 tunnel warning dry contact signals (high-carbon is reported to the police and fault alarm)
Digital quantity----digital signal is to DCS system (RS485)
5) signal input:
Switching value----is accepted boiler and is thrown oil and start stop signal
6) the data storage is＞12 months
7) the adjustable 1～7kW of working power 220VAC/ 2000W high frequency power.
This device takes the lead in using the technology of high-frequency electromagnetic induction heating at the equipment of the online detection of unburned carbon in flue dust of adopting " burning the mistake method ", is different from the mode of the domestic resistance wire heating furnace calcination of generally adopting, and can work safely and reliably in rugged surroundings for a long time.It is applied in the domestic technological precedence that belongs to.
The design of the drawer type of the gear train of one dimensional pattern is simple and direct, reliable transmission, and fault frequently such as avoided fully that common mechanical bite, transmission is out-of-limit, control is malfunctioning accomplishes to be close to non-maintaining.The design of wherein " dynamically electromagnetic oven " is the core technology of simplifying gear train, belongs to technological precedence at home.
The dust removing system design of device is original, makes to receive grey pipeline and orderly the cooperating of ash discharge pipeline energy, has further simplified physical construction, and its design belongs to leading domestic.
Also do not adopt " calcination loss method " realization to the equipment of the online carbon determination of flying dust at present abroad, and the calcination carbon testing device of domestic use all is the gear train that adopts " three dimensional pattern " of the design of electric company in the former continent, it all is the method calcination flying dust that adopts the resistance wire heating, from result of use, can't avoid frequent faults such as mechanism's bite, transmission is out-of-limit, control is malfunctioning, even be difficult to accomplish failure-free operation 1 month.Therefore, the online carbon testing device of electromagnetism calcination of the dimensional pattern that we invent is online carbon determination application apparatus truly.Onlinely providing reliable carbon content data, is the important evidence that the combustion energy saving consumption reduction is optimized in the fuel-burning power plant, and its widespread usage will be brought very huge safety economy benefit and corresponding social benefit.
Claims (9)
1. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern is characterized in that comprising and measures rack and control rack; Described measurement rack is with sampling equipment and case is measured in calcination and balance attaches together in a rack case, and described control rack is that industrial control host system, high-frequency signal machine, cooling water tank, source of the gas pipe valve case are attached together in a rack.
2. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 1 is characterized in that described measurement rack comprises the mechanical transmission mechanism of sampling equipment and a dimensional pattern, and high-frequency electromagnetic oven and electronic balance; Described control rack comprises source of the gas pipe valve box, high-frequency signal machine, cooling water tank, display, industrial control host; The signal output part of wherein controlling the control source of the gas of the industrial control host in the rack inserts by the A solenoid valve in the source of the gas pipe valve box measures the gas source interface on the receipts ash discharge base in the sampling equipment in the cabinet, the signal output part of the controlled pressure of industrial control host inserts by the reduction valve in the source of the gas pipe valve box and measures the induction tunnel afterbody source of the gas port in the sampling equipment in the cabinet, the signal output part of the control gear train work of industrial control host connects the signal input part of the drive motor in the mechanical transmission structure of measuring the dimensional pattern in the cabinet, the signal output part of measuring the electronic balance in the cabinet connects the weighing-up wave input end of industrial control host, first signal input part of the high-frequency signal output termination high-frequency signal machine of industrial control host, the signal output part of high-frequency signal machine inserts high-frequency electromagnetic oven, the signal output part of cooling circulating water connects the secondary signal input end of high-frequency signal machine by micro pump, the demonstration signal output part of industrial control host connects the signal input part of display, and the signal output part of the control cooling circulating water of industrial control host connects the cooling circulating water signal input part; Industrial control host is accepted boiler start/ stop, is thrown oily signal, industrial control host output alarm, DCS communication signal, input electrical source of power signal; Pressurized air enters sampling equipment by A solenoid valve, B solenoid valve.
3. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 1 is characterized in that the structure of described control rack comprises industrial control host system, touch-screen colour display screen, source of the gas pipe valve case, high-frequency electromagnetic machine, cooling water tank, terminal box; The control signal of industrial control host has upstream and downstream and the start stop signal of drive motor in the switching value signal, gear train of switching value signal, the micro pump in the cooling water tank of power supply of switching value signal, high-frequency electromagnetic machine of 2 solenoid valves in the source of the gas pipe valve case; The radiator fan of rack is independent control, and terminal box is the transit ports of power supply and signal cable.
4. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 1, it is characterized in that described measurement rack is with sampling equipment and case is measured in calcination and electronic balance attaches together in a rack case, the top of rack is sampling equipment, the middle part is that case is measured in calcination, gear train and high-frequency electromagnetic oven and the crucible that case comprises a dimensional pattern measured in calcination, and the bottom is electronic balance.
5. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 4 is characterized in that described electronic balance is connected with the rack bottom by four rubber isolator; Measuring rack is installed on the measurement point selected on vertical gas pass or the horizontal flue.
6. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 1, it is characterized in that described sampling equipment, its structure comprises stopple coupon, induction tunnel, cyclone dust collector and receipts ash discharge base, wherein stopple coupon joins by gas outlet and induction tunnel, stream particle collector and the corresponding setting of receipts ash discharge base, described gas outlet increase has designed the source of the gas port, be used for connecting post-decompression pressurized air, provide from taking out the source of the gas of system, receipts ash pipe in the described receipts ash discharge base is the base of important actor shape, the centre is for the cylindrical bore of receiving ash, there is the ash-hole of a 5mm on the right below the hole, and guide on the gas source interface of right side central of base, can satisfy and receive grey requirement, can when ash discharge, provide on-the-spot pressurized air again.
7. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 2, the gear train that it is characterized in that a described dimensional pattern, its structure comprise motor, guide rod, drive lead screw, crucible, radio-frequency coil, electromagnetic oven body, motion supporting plate, guide rail; Wherein motor and drive lead screw join, drive lead screw and motion supporting plate join, crucible respectively with receive the ash discharge base, electronic balance is corresponding to be arranged, motion supporting plate and crucible, receive the corresponding setting of ash discharge base, crucible is placed in the middle cylindrical hole of electromagnetic oven body, radio-frequency coil is embedded in the electromagnetic oven body, electromagnetic oven is fixed on the supporting plate, 4 guide rods are fixed on the top board and base plate of casing of a drawer type, adopt flange not have oily lining and be connected guiding with motion platform, whole box body is installed on the guide rail, and the top board of the casing of described drawer type and back-plane design are " U " shape, during work, supporting plate drives electromagnetic oven crucible is delivered to corresponding surveying work point.
8. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 7, it is characterized in that the design of described drive lead screw adopted the elastic pressuring spring nut, make the gear train platform move to when receiving ash discharge point working point, can produce enough snap-in forces, satisfy the seal request between crucible and the receipts ash discharge base when receiving ash discharge.
9. the online carbon testing device of electromagnetism calcination method flying dust of a dimensional pattern according to claim 6, it is characterized in that described stopple coupon has been increased on isokinetic sampling's basis extracts sample certainly, when the isokinetic sampling reaches above 10 minutes the time, when receiving flying dust insufficient total amount 1 gram, system will start automatically from taking out system, after being to utilize on-the-spot instrument with pressurized air process reduced pressure treatment, the system of taking out send the induction tunnel afterbody, in order to accelerate the flue gas flow rate in the sampling equipment, reach the effect of accelerating to receive ash, avoid insecure measurement of ashless few ash.
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