CN105181391A - Method for guaranteeing realtime performance at dry dust collector ash outlet during automatic sampling - Google Patents
Method for guaranteeing realtime performance at dry dust collector ash outlet during automatic sampling Download PDFInfo
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- CN105181391A CN105181391A CN201510479610.9A CN201510479610A CN105181391A CN 105181391 A CN105181391 A CN 105181391A CN 201510479610 A CN201510479610 A CN 201510479610A CN 105181391 A CN105181391 A CN 105181391A
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- Prior art keywords
- ash
- valve
- sample
- compressed air
- dust collector
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Links
- 238000005070 sampling Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000428 dust Substances 0.000 title abstract description 4
- 239000002956 ash Substances 0.000 claims description 36
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 238000009933 burial Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a method for guaranteeing realtime performance at a large coal-fired boiler dry dust collector ash outlet during automatic sampling. The method is used for online detection of combustible matter content or component in a dust collector outlet ash sample during production, and solves the sample lagging problem caused by burial of a sampling apparatus inlet in ash. The method is characterized in that: the front and back of a sampling amount control valve on a pneumatic sampler are respectively added with a nozzle, when the valve is closed, compressed air is introduced into the nozzles respectively, the compressed air introduced to the front of the valve is used for reverse blowing to clear all old ash in the sampling apparatus; and the compressed air introduced to the back of the valve is used for clearing the residual old ash in a channel for conveying the ash sample. Thus, at the proper time, an electromagnetic valve controls the introduction of compressed air to the two nozzles respectively, thus ensuring that the collected ash sample is the fresh ash of the time.
Description
Technical field
The present invention relates to a kind of method ensureing real-time when large coal-fired boiler dry collector ash hole is sampled automatically, the method by for the production of in process to the on-line checkingi of house outlet ash sample combustible content or composition, solve because sampling apparatus entrance is buried in the delayed problem of the sample that causes in ash.
Background technology
The real-time adjustment that in boiler combustion product, the testing result of unburned combustible in fly ash will be used for boiler combustion.Therefore, the real-time of the tested ash sample of collection just seems very important.The sampling that the present invention relates to carries out in the outlet of the bucket shape ash silo of fly-ash separator.Because the entrance of sampler is embedded in flying dust, so the sample collected is all the old ash supplemented at that time after upper sense cycle sampling at every turn, meanwhile, the passage of conveying ash sample also can remain some old ashes.Therefore, the ash sample collected like this is by a delayed sense cycle.
For the above reasons, make testing result can not meet the requirement of firing optimization to real-time, directly affect the effect of Combustion System.
Summary of the invention
Gather delayed problem to solve ash sample in existing automatic sample mode, the present invention proposes a kind of method ensureing real-time.
The technical scheme of the technical matters that the method will solve and employing is: before and after the valve of original sampler control sampling quantity, respectively install a nozzle additional, when after valve closing, if pass into pressurized air respectively in nozzle, then blowback is emptied all old ashes entering sampler by the pressurized air passed into before valve; The pressurized air passed into after valve will empty old ash residual in the passage of conveying ash sample.So, by solenoid control, respectively pressurized air is passed into two nozzles in due course, just can ensure that the ash sample gathered is new ash at that time.
The beneficial effect that the present invention brings is: proved by the operative practice of the embodiment of the present invention, the method efficiently solves the ash sample lag issues gathered when dry collector ash hole is sampled automatically, enable testing result reflect the combustion position of boiler at that time, provide reliable foundation for Combustion System and regulating effect and feed back timely.
Accompanying drawing explanation
Accompanying drawing is the unburned carbon in flue dust on-line period device schematic diagram that the present invention relates to.
In figure: 1. electronic the or operated pneumatic valve 5. front nozzle 6. rear nozzle 7. ash sample conveyance conduit 8. strength sampler of pressurized air 2. ash sample 3. fly-ash separator ash hole wall 4..
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in drawings: the present invention has installed two pressurized air front nozzles 5 and rear nozzle 6 respectively additional on original sampler 8 and ash sample conveyance conduit 7.Embodiment is: be fixed on by strength sampler 8 on fly-ash separator ash hole wall 3, connect ash sample conveyance conduit 7; Electronic or operated pneumatic valve 4 is closed before sampling, pressurized air 1 is passed into front nozzle 4, the old grey blowback flowing into strength sampler 8 is before removed, after disconnecting pressurized air 1, pass into pressurized air 1 to strength sampler 8 immediately, open electronic or operated pneumatic valve 4 simultaneously, current new ash sample 2 is inhaled into strength sampler 8, and be transported to testing agency by ash sample conveyance conduit 7, how much control the shut-in time that is electronic or operated pneumatic valve 4 according to sampling quantity, once sample and namely accused.Electronic or operated pneumatic valve 4 passes into pressurized air 1 to rear nozzle 6 after closing, and is removed by ash residual in ash sample conveyance conduit 7 clean, ready for sampling next time.
By above embodiment, solve the difficult problem that ash sample is delayed when dry collector ash hole is sampled automatically.
Claims (2)
1. one kind ensures the method for real-time when large coal-fired boiler dry collector ash hole is sampled automatically, it is characterized in that: before and after the valve of sampler control sampling quantity, respectively install a nozzle additional, when after valve closing, in nozzle, pass into pressurized air respectively, then blowback is emptied all old ashes entering sampler by the pressurized air passed into before valve; The pressurized air passed into after valve will empty old ash residual in the passage of conveying ash sample.
2. sampler according to claim 1, is characterized in that: pass into pressurized air by solenoid control respectively to two nozzles in due course, thus ensures that the last ash sample gathered is new ash at that time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479610.9A CN105181391B (en) | 2015-08-07 | 2015-08-07 | A method of ensureing real-time when dry collector ash hole samples automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479610.9A CN105181391B (en) | 2015-08-07 | 2015-08-07 | A method of ensureing real-time when dry collector ash hole samples automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105181391A true CN105181391A (en) | 2015-12-23 |
| CN105181391B CN105181391B (en) | 2018-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510479610.9A Active CN105181391B (en) | 2015-08-07 | 2015-08-07 | A method of ensureing real-time when dry collector ash hole samples automatically |
Country Status (1)
| Country | Link |
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| CN (1) | CN105181391B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720425Y (en) * | 2004-07-27 | 2005-08-24 | 杨上雄 | Fly ash sampling device |
| CN2746382Y (en) * | 2004-11-12 | 2005-12-14 | 袁川 | Sampling instrument for fly ash of boiler |
| CN101806677A (en) * | 2010-04-26 | 2010-08-18 | 宁夏电力公司电力科学研究院 | Portable coal powder sampler |
| CN201837547U (en) * | 2010-04-26 | 2011-05-18 | 宁夏电力公司电力科学研究院 | Flying ash sampling device at uniform speed |
| CN202823994U (en) * | 2012-09-29 | 2013-03-27 | 上海硕迪自动控制系统有限公司 | Multipoint continuous pulsating dust-cleaning system |
| CN203337423U (en) * | 2013-07-08 | 2013-12-11 | 大唐华银怀化石煤资源开发有限公司 | Dredge device of boiler flue fly ash sampler |
| CN203365194U (en) * | 2013-05-31 | 2013-12-25 | 神华集团有限责任公司 | Smoke sampling device |
-
2015
- 2015-08-07 CN CN201510479610.9A patent/CN105181391B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720425Y (en) * | 2004-07-27 | 2005-08-24 | 杨上雄 | Fly ash sampling device |
| CN2746382Y (en) * | 2004-11-12 | 2005-12-14 | 袁川 | Sampling instrument for fly ash of boiler |
| CN101806677A (en) * | 2010-04-26 | 2010-08-18 | 宁夏电力公司电力科学研究院 | Portable coal powder sampler |
| CN201837547U (en) * | 2010-04-26 | 2011-05-18 | 宁夏电力公司电力科学研究院 | Flying ash sampling device at uniform speed |
| CN202823994U (en) * | 2012-09-29 | 2013-03-27 | 上海硕迪自动控制系统有限公司 | Multipoint continuous pulsating dust-cleaning system |
| CN203365194U (en) * | 2013-05-31 | 2013-12-25 | 神华集团有限责任公司 | Smoke sampling device |
| CN203337423U (en) * | 2013-07-08 | 2013-12-11 | 大唐华银怀化石煤资源开发有限公司 | Dredge device of boiler flue fly ash sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105181391B (en) | 2018-09-28 |
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Effective date of registration: 20190808 Address after: 132013 No. 9 Taibei Road, Jilin High-tech Zone Patentee after: Jilin City Northeast Electric Kaiyuan Technology Co., Ltd. Address before: 132013 No. 9 Taibei Road, Jilin High-tech Zone Patentee before: Jie Hailong |
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