CN104483166B - A kind of efficient lime-ash sampler and method - Google Patents
A kind of efficient lime-ash sampler and method Download PDFInfo
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- CN104483166B CN104483166B CN201410749430.3A CN201410749430A CN104483166B CN 104483166 B CN104483166 B CN 104483166B CN 201410749430 A CN201410749430 A CN 201410749430A CN 104483166 B CN104483166 B CN 104483166B
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Abstract
A kind of efficient lime-ash sampler and method, this device comprises cooling collar and sampling finned tube, cooling collar comprises sleeve pipe outer tube and sleeve pipe inner tube, being welded on sleeve pipe outer tube and sleeve pipe inner tube two ends plays connection function and makes the airtight annular closure plate in space therebetween, be welded on the flange of sleeve pipe outer tube outer wall, be provided with working medium import and sender property outlet at sleeve pipe outer tube smoke outlet; Be welded in the floor of cutting apart between sleeve pipe outer tube and sleeve pipe inner tube, cut apart floor the space between sleeve pipe outer tube and sleeve pipe inner tube is divided into two parts that gas approach end is communicated with; Sampling finned tube insert in sleeve pipe inner tube and with its matched in clearance, comprise wing in sampling finned tube wall and interior sampling finned tube thereof, sampling finned tube is divided into two parts of decile taking the pipe diameter perpendicular to wing in sampling finned tube as axis, and is interconnected by double buckle; The invention also discloses the efficient sampling method of this device; For research heat exchanger slagging scorification dust stratification mechanism provides experiment convenient, not only use manpower and material resources sparingly, and shortened sample time.
Description
Technical field
The invention belongs to coal combustion and environmental pollution draining technology field, be specifically related to a kind of efficient lime-ash samplingDevice and method.
Background technology
The fusing of carrying secretly in flue gas or the coal ash particle of partial melting impinge upon furnace wall, water-cooling wall or heat exchanger tubeOn son, be cooled and solidify, and form slagging scorification through continuous accumulation progressive additive. Slagging scorification is mainly with thickness or moltenThe sedimentary form appearance of melting, major part appears on radiation heating-surface. The slagging scorification problem of boiler is oneExtremely complicated Physico-Chemical Problems, the aspects such as combustion position, fuel performance and the heat transfer of boiler have and knotSlag problem is closely bound up. Stain and be also dust stratification, refer to that the soot particle in flue gas is deposited on and is subject to when lower than ash fusion pointOn hot side. Dust stratification comprises that high temperature ash deposition and Low Temperature Ash deposit two types. High temperature ash deposition is out of shape at soot particleIn a certain temperature range below temperature, form, this class deposition occurs in pendant superheater mostly, convection current is overheatedOn the convection heating surfaces such as device; On temperature may be lower than the tube wall surface of acid dew point, often there is low temperature dust stratification,As low-level (stack-gas) economizer and air preheater, it is to be formed by flying dust and acid solution cohesion. Ask for dust stratification, slagging scorificationTopic, expert very payes attention to both at home and abroad, and has carried out deep research, wherein for institute's slagging scorification sample and ash sampleAnalysis be research the most important thing!
But existing lime-ash sampler adopts the mode of water-cooled tube wall or air cooling tube wall, make ash or slag heavyAmass outside tube wall, can only sample the ash forming under single flue-gas temperature or slag at every turn, therefore, needRepeatedly repeated sampling process, to obtain the lime-ash sample forming at multiple temperature, expend a large amount of manpower and materials andQuality time, in addition because the sample temperature of lime-ash sample is discontinuous, and sampling field condition limit, pastLime-ash sample under key temperatures cannot gather the very first time, need to repeat experiment and gatherer process, againCause resource and waste of time.
Summary of the invention
The problem existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of efficient lime-ashSampler, not only easy to operate, and can gather the difference forming under continuous temperature from high to low simultaneouslyLime-ash sample, for research flue gas dust stratification, slag-bonding mechanism provide huge facility.
Another object of the present invention is to provide and utilize efficient lime-ash sampler, continuous from high to low to flue gasThe method that the different lime-ash samples that form at temperature sample simultaneously, can be efficiently and accurately to different temperaturesThe lime-ash sample of lower formation samples, for experimental study provides important guiding suggestion.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of efficient lime-ash sampler, comprises cooling collar 1 and sampling finned tube 2;
Described cooling collar 1 comprises sleeve pipe outer tube 14 and sleeve pipe inner tube 15, is welded on sleeve pipe outer tube 14 and coverPipe inner tube 15 two ends play connection function and make sleeve pipe outer tube 14 and sleeve pipe inner tube 15 between the airtight ring in spaceShape closure plate 17, is welded on the flange 11 of sleeve pipe outer tube 14 outer walls, in the 14 smoke outlet settings of sleeve pipe outer tubeThere are working medium import 12 and sender property outlet 13; Be welded in the rib of cutting apart between sleeve pipe outer tube 14 and sleeve pipe inner tube 15Plate 16, described sleeve pipe outer tube 14 and sleeve pipe inner tube 15 gas approach end predeterminable ranges do not weld cuts apart floor 16,Described cut apart floor 16 by the space between sleeve pipe outer tube 14 and sleeve pipe inner tube 15 be divided into gas approach end be communicated withTwo parts;
Described sampling finned tube 2 insert in sleeve pipe inner tube 15 and with sleeve pipe inner tube 15 matched in clearance, comprise samplingWing 22 in sampling finned tube in finned tube wall 21 and sampling finned tube wall 21, described sampling finned tube 2 is with perpendicular to gettingIn sample finned tube, the pipe diameter of wing 22 is two parts that axis is divided into decile, and is interconnected by double buckle 23.
Described sampling finned tube 2 is than the long 70～100mm of cooling collar 1, and sampling finned tube 2 is positioned at cooling collar 1The end of smoke outlet exterior section is processed with the external screw thread 24 of being convenient to connect follow-up equipment.
Gap between described sampling finned tube 2 and sleeve pipe inner tube 15 is no more than 0.5mm.
Wing 22 and sampling finned tube wall 21 global formations, sampling finned tube in the sampling finned tube of described sampling finned tube 2The spacing of interior wing 22 is 6～10mm.
The pipe fitting that described cooling collar 1 and sampling finned tube 2 are the metal material processing of employing high heat transfer coefficient,Its cross section is closed figure.
A kind of efficient lime-ash sampling method, comprises the steps:
Step 1, cooling collar 1 is connected in to walling of flue via flange 11, and ensures cooling collar 1 front endPut in flue;
Step 2, cooling working medium is sent into working medium import 12, cooling working medium is selected water or sky according to the actual requirementsGas;
Step 3, after step 1 regulates cooling collar 1, will sample finned tube 2 and insert via sleeve pipe inner tube 15Enter cooling collar 1, and connect follow-up equipment by external screw thread 24;
Step 4, after step 3 connects sampling finned tube 2, open relevant device, carry out the sampling of ash, slag,Expect running time until reach;
Step 5, after step 4 completes sampling, close the follow-up equipment that external screw thread 24 connects, then pass throughA whole set of lime-ash sampler is unloaded walling of flue by flange 11, waits for that sampling finned tube 2 is down to room temperature;
Step 6, be down to room temperature through step 5 finned tube 2 to be sampled, sampling finned tube 2 detached to cooling collar 1,And by external screw thread 24, it is separated with follow-up equipment;
Step 7, by double buckle 23, two parts up and down of sampling finned tube 2 are separated, to managing interior slagging scorification or long-pendingAsh carries out sequential sampling from front to back, properly preserves after lime-ash sample, completes sampling work.
Compared to the prior art, the invention has the beneficial effects as follows:
(1) a kind of efficient lime-ash sampler of the present invention adopts interior wing enhanced heat exchange element, significantly shortens deviceEntire length, installation is easy to carry.
(2) distinguish sampler in the past, a kind of efficient lime-ash sampler of the present invention makes smoke gas flow change through interior wingThermal element, flue gas flows while cooling and deposition on one side, can disposable acquisition flue gas at each temperatureAsh, slag specimen product, save significantly manpower and materials and experimental period.
(3) distinguish sampler in the past, a kind of efficient lime-ash sampler of the present invention flows flue gas in pipe,Ash, slag specimen product are deposited in pipe, ensure that sample is complete, true.
(4) a kind of efficient lime-ash sampling method of the present invention can change flue gas flow rate in sampling finned tube, not only canRegulate the duration of sampling work, and can be for studying the heavy of ash, slag under different flow of flue gas statesLong-pending characteristic, a device completes multiple efficacies.
(5) a kind of efficient lime-ash sampling method of the present invention can make efficient lime-ash sampler recycling, withoutDevice is damaged and just can complete experiment sampling process, effectively save experimental cost.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of efficient lime-ash sampler of the present invention.
Fig. 2 is B partial enlarged drawing in Fig. 1.
Fig. 3 is that Fig. 1 is along A-A to cutaway view Amplified image.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, Figure 2 and Figure 3, a kind of efficient lime-ash sampler of the present invention, comprises cooling collar 1With sampling finned tube 2, described cooling collar 1 comprises sleeve pipe outer tube 14 and sleeve pipe inner tube 15, is welded on outside sleeve pipePipe 14 and sleeve pipe inner tube 15 two ends play connection function and make sleeve pipe outer tube 14 and sleeve pipe inner tube 15 between skyBetween airtight annular closure plate 17, be welded on the flange 11 of sleeve pipe outer tube 14 outer walls, at sleeve pipe outer tube 14 flue gasesThe port of export is provided with working medium import 12 and sender property outlet 13; Be welded in sleeve pipe outer tube 14 and sleeve pipe inner tube 15 itBetween cut apart floor 16, described sleeve pipe outer tube 14 and sleeve pipe inner tube 15 gas approach end predeterminable ranges do not weldCut apart floor 16, described in cut apart floor 16 space between sleeve pipe outer tube 14 and sleeve pipe inner tube 15 be divided into flue gasTwo parts that entrance point is communicated with; Described sampling finned tube 2 insert in sleeve pipe inner tube 15 and and sleeve pipe inner tube 15 betweenGap coordinates, and comprises wing 22 in the sampling finned tube in sampling finned tube wall 21 and sampling finned tube wall 21, described samplingFinned tube 2 is divided into two parts of decile taking the pipe diameter perpendicular to wing 22 in sampling finned tube as axis, and by primary and secondaryButton 23 interconnects.
As the preferred embodiment of the present invention, described sampling finned tube 2 is grown 70～100mm than cooling collar 1,The end that sampling finned tube 2 is positioned at cooling collar 1 smoke outlet exterior section is processed with is convenient to connect follow-up establishingStandby external screw thread 24.
As the preferred embodiment of the present invention, described cooling collar 1 and sampling finned tube 2 all adopt high heat transferThe tube and pipe of aluminium alloy of coefficient. Described sampling finned tube 2 is slightly longer than the about 80mm of cooling collar 1, and can insert coolingThe sleeve pipe inner tube 15 of sleeve pipe 1, adopts matched in clearance, and its gap is 0.3mm. Getting of described sampling finned tube 2Wing 22 and the 21 monolithic extruded moulding of sampling finned tube wall in sample finned tube, in sampling finned tube, the spacing of wing 22 is 8mm.
As the preferred embodiment of the present invention, described sampling finned tube 2 is positioned at cooling collar 1 smoke outletThe end of exterior section is processed with external screw thread 24, is convenient to connect follow-up equipment.
As shown in Figure 1, a kind of efficient lime-ash sampling method, specifically implement according to following steps:
Step 1, cooling collar 1 is connected in to walling of flue via flange 21, and ensures cooling collar 1 front endPut in flue;
Step 2, cooling working medium is sent into working medium import 22, as the preferred embodiment of the present invention, coolingWorking medium is selected water;
Step 3, after step 2 regulates cooling collar 1, will sample finned tube 2 and insert via sleeve pipe inner tube 15Enter cooling collar 1, and connect follow-up equipment by external screw thread 24, as temperature element, aspiration pump etc.;
Step 4, after step 3 connects sampling finned tube 2, open relevant device, carry out the sampling of ash, slag,As the preferred embodiment of the present invention, need operation more than 10 hours;
Step 5, after step 4 completes sampling, close the follow-up equipment that aspiration pump etc. is connected by external screw thread, logicalCross flange 11 a whole set of lime-ash sampler is unloaded to walling of flue, wait for that sampling finned tube 2 is down to room temperature;
Step 6, be down to room temperature through step 5 finned tube 2 to be sampled, sampling finned tube 2 detached to cooling collar 1,And by external screw thread 24, it is separated with follow-up equipment;
Step 7, through step 6, by double buckle 23 by sampling finned tube 2 two parts up and down separate, to pipeInterior slagging scorification or dust stratification carry out sequential sampling from front to back, properly preserve after lime-ash sample, complete sampling work.
Workflow of the present invention and operation principle are as follows:
Cooling working medium enters the interior space of cooling collar 1 via working medium import 12, owing to separating the resistance of floor 16Be full of space axial flow in one side of something of cooling collar 1 every, cooling working medium, in cooling collar 1 front endConnectivity part turns to and enters space in other one side of something, and reverse axial flow, finally leaves via sender property outlet 13Cooling collar 1, cooling working medium is full of and flows in cooling collar 1 thus, thereby in cooling sampling finned tube 2Flue gas.
Sampling finned tube 2 adopts wing 22 in the sampling finned tube that gos deep into center in element to carry out heat exchange strengthening, heat exchangeIn element, high-temperature flue gas is divided into some heat exchange region, has effectively reduced gas footpath in traditional heat exchange elementTo temperature gradient distribution pattern, changed the gas temperature field distribution on radial section in traditional heat exchange element,Improve the heat transfer effect of the inertia heat transfer zone at traditional heat exchange element center, realized cross-section temperature field uniformMaximize; Meanwhile, by the effect of cutting apart of wing 22 in sampling finned tube, high-temperature flue gas is divided into some thin layers,Greatly attenuate viscosity flue gas boundary layer thickness not, significantly weakened not viscosity flue gas boundary layer to ash, slagThe obstruction of deposition, the deposit in flue gas main flow is as long as can get through thinner not viscosity flue gas boundary layerIn sample finned tube, on wing 22 walls, deposit, arrive the object of ash, slag sampling.
The outer wall of the inwall of the sleeve pipe inner tube 15 of cooling collar 1 and sampling finned tube 2, adopts narrow matched in clearance,Can easy removal under room temperature, when device is during in running status, due to flue gas, sampling finned tube 2 temperatureRaise, outer wall expands, and causes the inwall laminating of sampling finned tube wall 21 and sleeve pipe inner tube 15 closely, end formBecome interference fit, the connection of not only fastening cooling collar 1 and sampling finned tube 2, and strengthened two elementsBetween heat transfer, reduce heat exchange thermal resistance, ensure that flue gas is cooling rapidly, ash, slag efficiently deposit.
Claims (6)
1. a lime-ash sampler, is characterized in that: comprise cooling collar (1) and sampling finned tube (2);
Described cooling collar (1) comprises sleeve pipe outer tube (14) and sleeve pipe inner tube (15), is welded on outside sleeve pipePipe (14) and sleeve pipe inner tube (15) two ends are played connection function and are made sleeve pipe outer tube (14) and sleeve pipe inner tube (15)Between the airtight annular closure plate (17) in space, be welded on the flange (11) of sleeve pipe outer tube (14) outer wall,Be provided with working medium import (12) and sender property outlet (13) at sleeve pipe outer tube (14) smoke outlet; Be welded inBetween sleeve pipe outer tube (14) and sleeve pipe inner tube (15), cut apart floor (16), described sleeve pipe outer tube (14)Do not weld and cut apart floor (16) with sleeve pipe inner tube (15) gas approach end predeterminable range, described in cut apart floor (16)Space between sleeve pipe outer tube (14) and sleeve pipe inner tube (15) is divided into two parts that gas approach end is communicated with;
Described sampling finned tube (2) insert in sleeve pipe inner tube (15) and with sleeve pipe inner tube (15) matched in clearance,Comprise wing (22) in the sampling finned tube in sampling finned tube wall (21) and sampling finned tube wall (21), described samplingFinned tube (2) is divided into two parts of decile taking the pipe diameter perpendicular to wing (22) in sampling finned tube as axis, andInterconnected by double buckle (23).
2. a kind of lime-ash sampler according to claim 1, is characterized in that: described sampling finned tube(2) than the long 70～100mm of cooling collar (1), sampling finned tube (2) is positioned at cooling collar (1) flue gas and goes outThe end of mouth end exterior section is processed with the external screw thread (24) of being convenient to connect follow-up equipment.
3. a kind of lime-ash sampler according to claim 1, is characterized in that: described sampling finned tube(2) gap and between sleeve pipe inner tube (15) is no more than 0.5mm.
4. a kind of lime-ash sampler according to claim 1, is characterized in that: described sampling finned tube(2) wing (22) and sampling finned tube wall (21) global formation, wing (22) in sampling finned tube in sampling finned tubeSpacing be 6～10mm.
5. a kind of lime-ash sampler according to claim 1, is characterized in that: described cooling collar(1) and sampling finned tube (2) for adopting the pipe fitting of metal material processing of high heat transfer coefficient, its cross section is envelopeClose figure.
6. a lime-ash sampling method, is characterized in that: comprise the steps:
Step 1, cooling collar (1) is connected in to walling of flue via flange (11), and ensures cooling collar(1) front end puts in flue;
Step 2, cooling working medium is sent into working medium import (12), cooling working medium select according to the actual requirements water orAir;
Step 3, after step 1 regulates cooling collar (1), will sample finned tube (2) via sleeve pipe inner tube(15) insert cooling collar (1), and connect follow-up equipment by external screw thread (24);
Step 4, after step 3 connects sampling finned tube (2), open relevant device, carry out ash, slag is gotSample, expects running time until reach;
Step 5, after step 4 completes sampling, close by external screw thread (24) connect follow-up equipment, thenBy flange (11), a whole set of lime-ash sampler is unloaded to walling of flue, wait for that sampling finned tube (2) is down to room temperature;
Step 6, be down to room temperature through step 5 finned tube to be sampled (2), will sample finned tube (2) and detach coolant jacketPipe (1), and by external screw thread (24), it is separated with follow-up equipment;
Step 7, by double buckle (23) will sample finned tube (2) two parts up and down separate, to managing interior knotSlag or dust stratification carry out sequential sampling from front to back, properly preserve after lime-ash sample, complete sampling work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749430.3A CN104483166B (en) | 2014-12-08 | 2014-12-08 | A kind of efficient lime-ash sampler and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410749430.3A CN104483166B (en) | 2014-12-08 | 2014-12-08 | A kind of efficient lime-ash sampler and method |
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| CN104483166A CN104483166A (en) | 2015-04-01 |
| CN104483166B true CN104483166B (en) | 2016-05-11 |
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| CN108333099A (en) * | 2017-04-19 | 2018-07-27 | 济南大学 | A kind of grey coupling experiment platform of acid |
| CN108760407B (en) * | 2018-05-25 | 2023-06-23 | 安徽工业大学 | Heat pipe phase-change heat exchange constant temperature sampling gun |
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| EP1467195A1 (en) * | 2003-04-07 | 2004-10-13 | Sobotta GmbH Sondermaschinenbau | Probe for extracting a gas sample |
| CN101672732A (en) * | 2009-07-31 | 2010-03-17 | 广东电网公司电力科学研究院 | Water-cooling fly ash sampling device of circulating fluid bed boiler |
| CN202330099U (en) * | 2011-11-14 | 2012-07-11 | 北京首钢自动化信息技术有限公司 | High-temperature flue-gas water-cooled jacket sampler |
| CN203551337U (en) * | 2013-10-09 | 2014-04-16 | 武汉分析仪器厂 | Dynamic pressure balance type constant-speed soot sampling tube |
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2014
- 2014-12-08 CN CN201410749430.3A patent/CN104483166B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1467195A1 (en) * | 2003-04-07 | 2004-10-13 | Sobotta GmbH Sondermaschinenbau | Probe for extracting a gas sample |
| CN101672732A (en) * | 2009-07-31 | 2010-03-17 | 广东电网公司电力科学研究院 | Water-cooling fly ash sampling device of circulating fluid bed boiler |
| CN202330099U (en) * | 2011-11-14 | 2012-07-11 | 北京首钢自动化信息技术有限公司 | High-temperature flue-gas water-cooled jacket sampler |
| CN203551337U (en) * | 2013-10-09 | 2014-04-16 | 武汉分析仪器厂 | Dynamic pressure balance type constant-speed soot sampling tube |
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