CN206906079U - A kind of fume duct fly ash sampling system - Google Patents
A kind of fume duct fly ash sampling system Download PDFInfo
- Publication number
- CN206906079U CN206906079U CN201720569852.1U CN201720569852U CN206906079U CN 206906079 U CN206906079 U CN 206906079U CN 201720569852 U CN201720569852 U CN 201720569852U CN 206906079 U CN206906079 U CN 206906079U
- Authority
- CN
- China
- Prior art keywords
- sampling
- fly ash
- probe tube
- flue
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a kind of fume duct fly ash sampling system, including：Two probe tubes, each probe tube include sampling end and sample outlet end, and sampling end is provided with the uniform multiple sample taps of a row, and sampling end is located in flue during sampling, and sample tap is towards flue gas direction of flow；Two fly ash sampling devices, each fly ash sampling device includes an air exhauster, connects a cyclone separator of the air exhauster, connects the grey funnel of a collection of the cyclone separator lower end and connect a collecting the gray bottle of the collection ash funnel lower end, the air exhauster connects probe tube by an exhaust tube, and the cyclone separator is also connected with a blast pipe；One temperature control device, for monitoring temperature in flue and probe tube, the heater that connection one is covered in the sampling end and exhaust tube of probe tube, and the sampling end and exhaust tube of probe tube are heated by the heater；One voltage operated device, for monitoring flue and sampling overpressure, flue and sampling overpressure are adjusted by controlling air exhauster running power.
Description
Technical field
It the utility model is related to environmental protection and power domain, and in particular to a kind of fume duct fly ash sampling system.
Background technology
Flying dust is fuel enters the tiny soot particle of back-end ductwork after boiler furnace burning with flue gas, uncompleted burned carbon in flying dust
Quality account for the percentage of flying dust amount unburned combustible in fly ash.Unburned combustible in fly ash is the main of reaction boiler combustion efficiency
Index., it is necessary to which timing acquiring flying dust sample determines unburned combustible in fly ash, to monitor pot in the day-to-day operation of coal-burning boiler
The quality of stove combustion conditions, operation operation is improved in time, improves boiler combustion efficiency.
At present, fly ash sampling device generally use single-point samples, and can not realize isothermal isokinetic sampling, and ash sample is representative
Difference, and pipeline easily blocks.Also a kind of improved fly ash sampling device, blowback, but blowback can be carried out using compressed air
When need to interrupt sampling, and depend on external compressed air unduly, not enough energy-conservation；In addition, device damage or stopping maintenance
Stop sampling, it is impossible to ensure continuous sampling.
Utility model content
To overcome above-mentioned deficiency, the utility model provides a kind of fume duct fly ash sampling system, can multiple spot isothermal constant speed take
Sample, it is ensured that the representativeness of ash sample, as far as possible using itself air blowback, pipeline blockage can not only be prevented, but also saved,
Blowback and damage need not interrupt sampling when safeguarding, realize continuous sampling.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：
A kind of fume duct fly ash sampling system, including：
Two probe tubes, each probe tube include sampling end and sample outlet end, and sampling end is provided with uniform multiple of a row and taken
Sample mouth, sampling end is located in flue during sampling, and sample tap is towards flue gas direction of flow；
Two fly ash sampling devices, each fly ash sampling device include an air exhauster, connect a whirlwind of the air exhauster
Separator, the grey funnel of a collection for connecting the cyclone separator lower end and the collecting the gray bottle for connecting the collection ash funnel lower end, the pumping
Machine connects probe tube by an exhaust tube, and the cyclone separator is also connected with a blast pipe；
One temperature control device, for monitoring temperature in flue and probe tube, connection one covers on sampling end and the pumping of probe tube
Heater on pipe, and the sampling end and exhaust tube of probe tube are heated by the heater；
One voltage operated device, for monitoring flue and sampling overpressure, by controlling air exhauster running power to adjust cigarette
Road and sampling overpressure.
Further, two probe tubes connect a motion, and the motion can make two probe tube displacements and rotation.
Further, each sample tap of probe tube is provided with the different guard of porosity, is counted from the guard near sample outlet end,
Porosity increases successively, and the resistance of Fly ash sampling is sequentially reduced, to ensure all sample tap uniform samplings.Porosity refers to institute on guard
The porose gross area accounts for the percentage of the guard gross area.
Further, the sample outlet end of probe tube is provided with two openings, connects exhaust tube and blast pipe respectively, and be equipped with valve
Door.
Further, temperature control device connects two temperature sensors, and the two is respectively arranged in exhaust tube and flue.
Further, voltage operated device connects two pressure sensors, and the two is respectively arranged in exhaust tube and flue.
Further, exhaust tube is provided with a valve with air exhauster junction, and blast pipe is provided with cyclone separator junction
One valve.
Further, blast pipe connects a compressed air hose, and the compressed air hose is provided with a valve.
Further, probe tube is corrosion-proof steel pipe, and air exhauster is turbine air exhauster, and cyclone separator, the grey funnel of collection are equal
For stainless steel, collecting the gray bottle is Space cup.
The beneficial effects of the utility model：
1st, multidraw is realized by multiple sample taps of probe tube, porosity and caused resistance due to sample tap guard
It is different so that each sample tap sample rate is consistent, it is ensured that each point uniform sampling, so that the ash sample obtained is more representative；2nd, take
Sample pipe is two, the using and the reserved, standby probe tube blowback is passed through by blast pipe through the lack of gas that cyclone separator is isolated
Motion will be moved to flue downstream by the probe tube of blowback, and is diverted to flue gas and flows away direction, not influence so another
The sampling of one probe tube, two prevent influence of the flue gas incoming to blowback；3rd, fly ash sampling device is two, the using and the reserved, when
One of damage or needs stop when safeguarding, can switch to another operation, it is ensured that flying dust continuous sampling；4th, temperature control is passed through
Device and voltage operated device can monitor probe tube in real time, temperature and pressure in exhaust tube, and be carried out with temperature and pressure in flue
Compare, temperature and pressure is adjusted by heater and air exhauster, it is ensured that with flue isothermal constant speed so that obtain ash sample it is true
Flying dust situation in real reflection flue；5th, a compressed air hose is further connected with blast pipe as standby, when lack of gas can not be effectively clear
During except the flying dust for sampling blockage, blowback can be carried out by compressed air, it is ensured that probe tube is unimpeded.
Brief description of the drawings
Fig. 1 is a kind of fume duct fly ash sampling system structural representation of the present utility model.
Fig. 2 is probe tube blowback schematic diagram.
In figure：01st, 02,03,04,05,06,07,08,09- valves, the probe tubes of 1- first, 1 '-the second probe tube, 2- take out
Tracheae, 3- air exhausters, 4- cyclone separators, 5- collection ash funnels, 6- collecting the gray bottle, 7- blast pipes, 8- motions, 9- heating dresses
Put, 10- temperature control devices, 11- voltage operated devices, 12- compressed air hoses.
Embodiment
To enable features described above and advantage of the present utility model to become apparent, special embodiment below, and appended by cooperation
Figure is described in detail below.
The present embodiment provides a kind of fume duct fly ash sampling system, as shown in Figure 1.The vertical tubular structure of rightmost is cigarette
Road, arrow upward is flow of flue gas direction, and Fly ash sampling is carried out by setting two probe tubes in the flue, the two
Probe tube the using and the reserved, for purposes of illustration only, being referred to as the first probe tube 1 and the second probe tube 1 ', two sampling tubular constructions are complete
It is exactly the same, including sampling end and sample outlet end, the multiple equally distributed sample taps of a row are provided with sampling end, sampling end during sampling
In flue, mouth down (i.e. flue gas direction of flow) is sampled, can be sampled in the diverse location of the same cross section of flue.Sampling
Guard is covered with mouthful, each guard porosity (i.e. total hole area accounts for the percentage of the guard gross area) is different, specifically hole size phase
Together, but hole number is different.Increase successively from left (i.e. near sample outlet end) to right hole rate, it is therefore an objective to caused according to different porositys
It is different to sample resistance, realizes that each sample tap speed is consistent, because the negative pressure in the pipe of the right is smaller, is more difficult to sample,
So reduce resistance by the porosity for increasing the right successively, in other words, increase the resistance of left side sample tap successively to reduce the right side
The negative pressure decay of side sample tap, it is ensured that the negative pressure of each sample tap is assigned in reasonable interval, to complete uniform sampling.To avoid
By flue gas corrosion, it is made probe tube using corrosion-proof steel pipe.
Fly ash sampling device is the core of the system, be Fly ash sampling, separation, discharge lack of gas power resources and hold
Row mechanism, it is two, the using and the reserved.Its air exhauster 3 is the power resources of sampling, is sampled by producing negative pressure, is selected
Turbine air exhauster.Cyclone separator 4 is handled the flue gas of entrance, isolates flying dust, is converged by the collection ash funnel 5 of lower section
Collection, final settlement to collecting the gray bottle 6 are completed to collect.Cyclone separator 4, the grey funnel 5 of collection are stainless steel, and collecting the gray bottle 6 is too
Empty cup.
Isolate the lack of gas after flying dust to discharge by blast pipe 7, be to be directly discharged into flue to flow away in the prior art, and
Being unique in that for this patent is linked into probe tube, for carrying out blowback to probe tube.Specifically, blast pipe 7 passes through two
Individual port is respectively connected to the sample outlet end to the first probe tube 1 and the second probe tube 1 ', is controlled by the switch of valve 01,02 come really
Determine to carrying out blowback in a standby probe tube.It so, it is possible to realize the blowback of probe tube using itself lack of gas as much as possible,
Prevent from sampling blockage, energy-conserving and environment-protective.To increase the safety factor of blowback, compressed air hose 12 has also been accessed on blast pipe 7,
Can be by compressed air when itself lack of gas does not reach blowback purpose.
, can be on the sample outlet end cover of exhaust tube 2 and probe tube to prevent the flue gas of sampling temperature in flow process from reducing
One heater 9 is heated.The heater 9 connects and is controlled by temperature control device 10, and temperature control device 10 is by being arranged at
Two temperature sensors in flue and exhaust tube 7 detect temperature in flue and exhaust tube 7 in real time, pass through relatively the two temperature
To adjust the heating power of heater 10, to ensure that temperature is consistent with flue temperature in exhaust tube 7, realize that isothermal samples.Need
, it is noted that in order to clearly show that in Fig. 1, heater 9 has only covered a part of exhaust tube 2, should cover entirely take out in practice
Air pipe or most of pipeline, as long as the cooling of exposed pipeline influences less.
To realize real-time isokinetic sampling, it is ensured that the flying dust uniformity in instant ash sample and flue, it is necessary to assure sampling pressure
Power is consistent.The two pressure is detected by voltage operated device 11 and two pressure sensors being arranged in flue and exhaust tube 7 simultaneously in real time
It is compared, the pressure that the running power of bleeding regulating machine 3 comes in bleeding regulating pipe 2, to realize isokinetic sampling.It need to point out
It is, it is succinct for display in Fig. 1, the connecting line of voltage operated device 11 and the air exhauster of the fly ash sampling device on the left side is eliminated, but it is real
Border is connection, and same control is carried out to it.
The system also includes a motion 8, and it is position and the sample tap direction for converting two probe tubes that it, which is acted on,.It is such as right
The effect of first probe tube 1, as shown in Figure 2.In normal sampling, the first probe tube 1 is in lower section (this of the second probe tube 1 '
Can be referred to as to be in flue gas upstream in patent), sampling mouth down (i.e. flue gas direction of flow), as shown in phantom in Figure 2；It is and right
During the first 1 blowback of probe tube, the second probe tube 1 ' can be allowed normally to be sampled, it samples mouth down, after flue gas flows into probe tube
Along arrow conveying to the left, the first probe tube 1 shifts up in the presence of motion 8, is moved to the second probe tube 1 '
Top (i.e. flue gas downstream), sees arrow I in Fig. 2；Then rotate towards so that sample tap upward (i.e. flue gas flows away direction), is shown in figure
Arrow II in 2.Lack of gas enter the first sampler 1 (right-hand arrow in such as figure) from left side, are then sprayed upwards by outlet,
Blowback is realized, with the first probe tube of blowback 1 and flying dust that its sample tap blocks.Why it is so designed that, is because of one
Flue gas downstream is in by the probe tube of blowback will not just to impact the probe tube sampled, two come sample tap court during blowback
Direction is flowed away to flue gas, is not rushed mutually with flue gas, avoids resisting, is advantageous to the flying dust that blowback is carried out and blocked and comes off and flow away.Fortune
The concrete structure of motivation structure 8 is easily achieved for the technical staff of mechanical field, where non-this patent emphasis, herein not
Give and repeating, it should thus be appreciated that.It is noted that in order to clearly show that in Fig. 1, by two probe tubes and exhaust tube 2 and blast pipe 7
Connection simply is drawn, and is not rigid connection, but flexible connection, i.e. two probe tube evolutions and rotation do not interfere with and
The annexation of other parts.
The operation process of this fume duct fly ash sampling system is summarized as follows：
Assuming that the fly ash sampling device on the right is in running order, the left side is in stand-by state, then 05,07 dozen, valve
Open, valve 06,08 is closed.When the first probe tube 1 samples, the second probe tube 1 ' is standby and carries out blowback, then valve 01,04 closes
Close, valve 02,03 is opened.In the presence of air exhauster 3, the flue gas of sampling can pass sequentially through the first probe tube 1, valve 03, take out
Tracheae 2, valve 05, into air exhauster 3, under the separation of cyclone separator 4, flying dust collects and sunk to by collecting grey funnel 5
In collecting the gray bottle 6.The lack of gas isolated are entered in blast pipe 7 by valve 07, then enter the second probe tube by valve 02 again
Blowback is realized in 1 '.When relying on itself lack of gas and not reaching blowback effect, valve 09 can be opened, it is empty by the appropriate compression of air pressure
Gas blowback.
When the first probe tube 1 needs blowback, valve 03 is closed to stop sampling, while valve 02 is closed, valve 04 is beaten
Open, then the second probe tube 1 ' starts to sample.In the presence of motion 8, the first probe tube 1 is moved up and rotated, and valve 01 is beaten
Open and carry out blowback to be passed through lack of gas.
When the right fly ash sampling device damage or need to stop safeguard when, the fly ash sampling device on the left side need to be accessed to replace
For operation, valve 05,07 is closed, while opens valve 06,08 and starts the air exhauster and whirlwind of left side fly ash sampling device
Separator, it is ensured that continuous sampling.
Claims (9)
- A kind of 1. fume duct fly ash sampling system, it is characterised in that including：Two probe tubes, each probe tube include sampling end and sample outlet end, and sampling end is provided with the uniform multiple sample taps of a row, Sampling end is located in flue during sampling, and sample tap is towards flue gas direction of flow；Two fly ash sampling devices, each fly ash sampling device include an air exhauster, connect a cyclonic separation of the air exhauster Device, the grey funnel of a collection for connecting the cyclone separator lower end and the collecting the gray bottle for connecting the collection ash funnel lower end, the air exhauster lead to Exhaust tube connection probe tube is crossed, the cyclone separator is also connected with a blast pipe；One temperature control device, for monitoring temperature in flue and probe tube, connect cover is in the sampling end and exhaust tube of probe tube One heater, and the sampling end and exhaust tube of probe tube are heated by the heater；One voltage operated device, for monitor flue and sampling overpressure, by control air exhauster running power adjust flue and Sample overpressure.
- 2. fume duct fly ash sampling system according to claim 1, it is characterised in that two probe tubes connect a motion, The motion can make two probe tube displacements and rotation.
- 3. fume duct fly ash sampling system according to claim 1, it is characterised in that each sample tap of probe tube is provided with porosity Different guards, counted from the guard near sample outlet end, porosity increases successively.
- 4. fume duct fly ash sampling system according to claim 1, it is characterised in that the sample outlet end of probe tube is opened provided with two Mouthful, exhaust tube and blast pipe are connected respectively, and are equipped with valve.
- 5. fume duct fly ash sampling system according to claim 1, it is characterised in that temperature control device connects two TEMPs Device, the two is respectively arranged in exhaust tube and flue.
- 6. fume duct fly ash sampling system according to claim 1, it is characterised in that voltage operated device connects two pressure sensings Device, the two is respectively arranged in exhaust tube and flue.
- 7. fume duct fly ash sampling system according to claim 1, it is characterised in that exhaust tube is provided with air exhauster junction One valve, blast pipe are provided with a valve with cyclone separator junction.
- 8. fume duct fly ash sampling system according to claim 1, it is characterised in that blast pipe connects a compressed air hose, The compressed air hose is provided with a valve.
- 9. fume duct fly ash sampling system according to claim 1, it is characterised in that probe tube is corrosion-proof steel pipe, pumping Machine is turbine air exhauster, and cyclone separator, the grey funnel of collection are stainless steel, and collecting the gray bottle is Space cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569852.1U CN206906079U (en) | 2017-05-22 | 2017-05-22 | A kind of fume duct fly ash sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569852.1U CN206906079U (en) | 2017-05-22 | 2017-05-22 | A kind of fume duct fly ash sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906079U true CN206906079U (en) | 2018-01-19 |
Family
ID=61289447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720569852.1U Active CN206906079U (en) | 2017-05-22 | 2017-05-22 | A kind of fume duct fly ash sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906079U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556928A (en) * | 2018-11-30 | 2019-04-02 | 国网山东省电力公司电力科学研究院 | A kind of fly ash sampling device and its operating method and its calibration measuring method |
| CN115655805A (en) * | 2022-12-13 | 2023-01-31 | 北矿机电科技有限责任公司 | Constant-speed sampler |
| CN116773753A (en) * | 2023-08-17 | 2023-09-19 | 北京牡丹联友环保科技股份有限公司 | Smoke monitor |
-
2017
- 2017-05-22 CN CN201720569852.1U patent/CN206906079U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556928A (en) * | 2018-11-30 | 2019-04-02 | 国网山东省电力公司电力科学研究院 | A kind of fly ash sampling device and its operating method and its calibration measuring method |
| CN109556928B (en) * | 2018-11-30 | 2022-03-18 | 国网山东省电力公司电力科学研究院 | Fly ash sampling device, operation method thereof and calibration measurement method thereof |
| CN115655805A (en) * | 2022-12-13 | 2023-01-31 | 北矿机电科技有限责任公司 | Constant-speed sampler |
| CN116773753A (en) * | 2023-08-17 | 2023-09-19 | 北京牡丹联友环保科技股份有限公司 | Smoke monitor |
| CN116773753B (en) * | 2023-08-17 | 2024-01-26 | 北京牡丹联友环保科技股份有限公司 | Smoke monitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206906079U (en) | A kind of fume duct fly ash sampling system | |
| CN103162993B (en) | Isothermal constant-speed sampling device of fly ash | |
| CN102494980A (en) | Concentration measuring and sampling device for high-temperature pressured dust | |
| CN205941111U (en) | A multiple spot equidistance flue gas sample thief for vertical gas pass | |
| CN106018002A (en) | Matrix type mixed constant-speed sampling device | |
| CN206540799U (en) | A kind of dust on-line monitoring system | |
| CN101788412B (en) | Device for monitoring flue gas flux of desulfurization tower on line | |
| CN205538534U (en) | Unburned carbon in flue dust on -line measuring system based on gaseous firing method of CO2 | |
| CN106248436A (en) | Wholegrain footpath on-line period device | |
| CN203719956U (en) | Sealed flying-ash sampling device | |
| CN208984411U (en) | A kind of flying dust processing sampler | |
| CN102890013A (en) | Flying ash sampler and ash removal system for thermal power plant | |
| CN208138869U (en) | A kind of gas sampling pipeline anti-clogging back-flushing structure | |
| CN104614222B (en) | Ammonia measurement device for denitration of flue gas pipeline | |
| CN106546695A (en) | Dry dust collection method tests coal combustion rate device and method | |
| CN209043548U (en) | A kind of detection device for building exhaust road | |
| CN109724104A (en) | A kind of anti-blocking grey air volume control method of air preheater and device for monitoring running | |
| CN214533086U (en) | Air volume control system of steam turbine generator set | |
| CN2720426Y (en) | Device for detecting fly-ash carbon-containing amount from power plant boiler | |
| CN208155672U (en) | A kind of novel heat power plant boiler fly ash sampling device | |
| CN202814759U (en) | Flying ash sampler and ash disposal system in heat-engine plant | |
| CN208275125U (en) | A kind of hot air dust removing device | |
| CN106546653A (en) | A kind of flue gas sucking system and method suitable for zirconia oxygen analyzer oxygen content measurement | |
| CN203981457U (en) | Flying dust carbon containing on-line monitoring system continuous sampling system | |
| CN211170414U (en) | Device for collecting condensate of cooling part of glass kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |