CN101806677A - Portable coal powder sampler - Google Patents
Portable coal powder sampler Download PDFInfo
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- CN101806677A CN101806677A CN 201010154931 CN201010154931A CN101806677A CN 101806677 A CN101806677 A CN 101806677A CN 201010154931 CN201010154931 CN 201010154931 CN 201010154931 A CN201010154931 A CN 201010154931A CN 101806677 A CN101806677 A CN 101806677A
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- negative pressure
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- cyclone separator
- pipeline
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Abstract
The invention relates to a measuring device, in particular to a portable coal powder sampler which comprises a negative pressure generator, a sampling gun, a cyclone separator connected with the sampling gun through the pipeline and a sample storage tank mounted on the cyclone separator. The portable coal powder sampler is characterized in that a piezometer tube and a sampling tube are mounted in the tubular sampling gun, wherein the sampling tube is connected with the air intake of the cyclone separator through the pipeline, the air outlet of the cyclone separator is connected with the negative pressure opening of the negative pressure generator, the air intake of the negative pressure generator is connected with the compressed air through an electrical control valve, the exhaust inlet of the negative pressure generator is communicated with the tubular sampling gun through the pipeline, both the piezometer tube and the sampling tube are provided with a pressure sensor and a blowback pipe, the blockback pipes mounted on the piezometer tube and the sampling tube are communicated with the air source of the compressed air through a valve, and the two pressure sensors mounted on the piezometer tube and the sampling tube and the electric control valve are connected electrically with a pressure control device. The invention can achieve the purpose of sampling accurately in constant speed.
Description
Technical field
Patent of the present invention relates to a kind of measurement mechanism, particularly a kind of portable coal powder sampler.
Background technology
For large coal-fired boiler, fineness of pulverized coal is an important parameter of weighing boiler milling system, the severe overweight of fineness of pulverized coal will bring problems to production, be difficult to after-flame as instability, the coal dust of coal powder ignition difficulty, flame combustion and cause problems such as the flying dust carbon containing is higher, load can be with.Therefore need measure fineness of pulverized coal exactly, thereby purpose, planned control, adjustment combustion system can be arranged, realize the method for operation of boiler the best.The coal dust sampling of unit pulverized-coal system must be taken a sample from the wind powder mixture in the airduct that leads to burner hearth, for making the coal dust sample of being obtained representative, must adopt movably constant-speed sampling device in theory, be that gas velocity in suction gas velocity and the measured pipeline of sampler equates, how to realize the isokinetic sampling easily, be the problem that domestic and international correlation engineering technician extremely pays close attention to always.
State knows that the notification number of Granted publication on the 27th in office's May in 2009 is CN201247165Y " a kind of fixed coal fines sampling apparatus ", this is novel to disclose a kind of fixed coal fines sampling apparatus, comprise an internal and external casing formula stopple coupon, the entrance point of this internal and external casing formula stopple coupon is connected with draught excluder, draught excluder one end links to each other with integral support, the other end links to each other with an airduct opening, the endpiece of internal and external casing formula stopple coupon is connected with sampling and purges cross-over valve and whirlwind, sampling links to each other with injector with the purging cross-over valve, injector is connected with the sampling pressure variable valve by the pressure gauge stand, whirlwind is connected the below of injector, and whirlwind below is equipped with collection sample bottle; Integral support is provided with leading screw support and leading screw, and the screw connecting rod is arranged between leading screw support and the leading screw, and this screw connecting rod links to each other with internal and external casing formula stopple coupon.Fixed coal fines sampling apparatus of the present utility model only needs a people just can operate in the sampling process, can take a sample at any time, and execute-in-place is simple, and compact conformation is easy for installation, and three valves only need open and close operation, and each once just can finish sampling and purging work.From the structure of said apparatus, realize by the whole sampling pressure variable valve of tensimeter number of degrees messenger wage adjustment owing to realize the isokinetic sampling, so just can't accurately realize P
1-P
2=0, also just can't realize isokinetic sampling's purpose.
Summary of the invention
At the shortcoming that present coal fines sampling apparatus exists, the objective of the invention is to realize easily that constant speed extracts the pulverized coal borne air flow sample in the pulverized coal channel, to satisfy the boiler optimum operation.
For achieving the above object, technical scheme of the present invention is: a kind of portable coal powder sampler, comprise negative pressure generator, sampling gun, the cyclone separator that is connected with sampling gun by pipeline, be installed in the storage sample jar on the cyclone separator, it is characterized in that in the tubulose sampling gun, being equipped with piezometric tube and stopple coupon, stopple coupon links to each other by pipeline with the cyclone separator air inlet, the air outlet of cyclone separator links to each other with negative pressure generator negative pressure mouth, the air inlet of negative pressure generator links to each other with pressurized air by electrically-controlled valve, the weary gas outlet of negative pressure generator is connected with the tubulose sampling gun by pipeline, pressure transducer and anti-blowpipe all are installed on above-mentioned piezometric tube and stopple coupon, the anti-blowpipe that wherein is installed on piezometric tube and the stopple coupon is connected by valve with compressed air gas source, and two pressure transducers and the electrically-controlled valve that are installed on piezometric tube and the stopple coupon are electrically connected with pressure control device.
In above-mentioned cyclone separator is to be in series by two or more cyclone separators.
The present invention has following characteristics: 1, utilize negative pressure suction and cyclonic separation principle, with coal dust from pulverized coal channel sucking-off and consolidate, the gas separation, negative pressure generator makes this device have characteristics easy to use as the operation power of whole device; 2, owing to adopts pressure sensor pressure in the sampled pipeline and the pressure in the stopple coupon are detected simultaneously, according to Bernoulli equation, when the pressure differential of two pressure transducers is zero, just can assert air-flow velocity and the interior identical principle of air-flow velocity of stopple coupon in the sampled pipeline, utilize pressure control device to analyze to detecting data, by regulating the openings of sizes of electrically-controlled valve, the pressure differential that guarantees two pressure transducers is zero, so just can accurately realize isokinetic sampling's purpose; 3, owing on piezometric tube in this device and the stopple coupon anti-blowpipe has been installed, before each the detection, can utilize pressurized air that piezometric tube and stopple coupon are purged, prevent piezometric tube, the blocked problem that causes this device lifetime of reduction and sampling precision to descend of stopple coupon.
Description of drawings
Accompanying drawing 1 is structure principle chart of the present invention;
Accompanying drawing 2 is the structural representation of sampling gun of the present invention.
Embodiment
Portable coal powder sampler as shown in Figure 1, 2, piezometric tube 9-3 and stopple coupon 9-2 are installed in the tubulose sampling gun 9, the air intake opening 9-1 of stopple coupon right-hand member is relative with sampling air current flow direction, and the stopple coupon left end links to each other with the air inlet of cyclone separator 5 by pipeline 6.For improving the precision of separating, cyclone separator is to be in series by two cyclone separators.Negative pressure generator is to utilize existing apparatus, its principle of work is to utilize jet pipe high velocity jet pressurized air, form jet at nozzle exit, generation is entrainmented mobile, under the effect of entrainmenting, make the nozzle exit ambient air constantly be sucked away, the pressure of its negative pressure mouth is reduced to below the atmospheric pressure, form the certain vacuum degree.
As shown in Figure 1, the air outlet of the cyclone separator of left end links to each other with the negative pressure mouth of negative pressure generator 3, the air inlet of negative pressure generator left end links to each other with compressed air line 1 by electrically-controlled valve 2, and the weary gas outlet of negative pressure generator right-hand member is connected with the tubulose sampling gun by pipeline.Pressure transducer 9-5 all is installed on above-mentioned piezometric tube and stopple coupon, and the electrically-controlled valve of pressure transducer and negative pressure generator left end all is electrically connected with pressure control device 4.The anti-blowpipe 9-6 that is installed on piezometric tube and the stopple coupon is connected by valve 8 with compressed air gas source.
Before the measurement, open valve 8 earlier, pressurized air enters in the surge tank 7, by surge tank pressurized air is evenly distributed in two anti-blowpipes, by two anti-blowpipes piezometric tube and stopple coupon are carried out blowback, with in piezometric tube and the stopple coupon and the dust of the mouth of pipe blow off, to prevent dust piezometric tube and stopple coupon are stopped up, cause sampling and pressure measurement to be forbidden.Then valve 8 is closed, the opening pressure control device, electrically-controlled valve is opened, pressurized air enters negative pressure generator, makes to produce negative pressure in two cyclone separators, the tubulose sampling gun is placed in the sampled pipeline 10 simultaneously, by the stopple coupon in the tubulose sampling gun with the coal dust sucking-off in the sampled pipeline, enter in two cyclone separators by pipeline 6, fall in the storage sample jar 11 that is installed in the cyclone separator lower end, take off storage sample jar and just can analyze.Two cyclone separators are installed the flying dust sample in the gas sampled can be carried out the granularity screening.The weary gas of negative pressure generator 3 enters the weary gas import 9-4 on the tubulose sampling gun by the pipeline of negative pressure generator right-hand member, turns back in the pulverized coal channel by tubulose sampling gun inner chamber.Piezometric tube in the tubulose sampling gun and the pressure in the stopple coupon, detect by pressure transducer, data delivery after the detection is in pressure control device, after pressure control device calculating, adjust the flow of electrically-controlled valve 2, make the measurement numerical value of two pressure transducers reach identical, that is to say the flow of regulating electrically-controlled valve 2 by pressure control device, so just adjusted the air-flow velocity in the cyclone separator, guaranteed that the interior pressure of pressure and flue 10 in the stopple coupon is identical, so just make and air-flow velocity and the interior air-flow velocity constant speed of flue that stopple coupon is interior realized isokinetic sampling's purpose.
Claims (2)
1. portable coal powder sampler, comprise negative pressure generator, sampling gun, the cyclone separator that is connected with sampling gun by pipeline, be installed in the storage sample jar on the cyclone separator, it is characterized in that in tubulose sampling gun (9), being equipped with piezometric tube (9-3) and stopple coupon (9-2), stopple coupon links to each other by pipeline (6) with cyclone separator (5) air inlet, the air outlet of cyclone separator (5) links to each other with negative pressure generator (3) negative pressure mouth, the air inlet of negative pressure generator links to each other with pressurized air by electrically-controlled valve (2), the weary gas outlet of negative pressure generator is connected with tubulose sampling gun (9) by pipeline, pressure transducer and anti-blowpipe all are installed on above-mentioned piezometric tube and stopple coupon, the anti-blowpipe that wherein is installed on piezometric tube and the stopple coupon is connected by valve (8) with compressed air gas source, and two pressure transducers and the above-mentioned electrically-controlled valve that are installed on piezometric tube and the stopple coupon are electrically connected with pressure control device (4).
2. portable coal powder sampler according to claim 1 is characterized in that above-mentioned cyclone separator (5) is to be in series by two or more cyclone separators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010154931 CN101806677A (en) | 2010-04-26 | 2010-04-26 | Portable coal powder sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010154931 CN101806677A (en) | 2010-04-26 | 2010-04-26 | Portable coal powder sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101806677A true CN101806677A (en) | 2010-08-18 |
Family
ID=42608567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010154931 Pending CN101806677A (en) | 2010-04-26 | 2010-04-26 | Portable coal powder sampler |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706690A (en) * | 2012-05-25 | 2012-10-03 | 中平能化集团机械制造有限公司 | Novel coal sample collecting device |
| CN102759473A (en) * | 2011-04-20 | 2012-10-31 | 徕卡生物系统努斯洛克有限公司 | Tissue sample handling apparatus |
| CN103674625A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Sampling device for gas-solid two-phase flow |
| CN104297022A (en) * | 2014-11-07 | 2015-01-21 | 成都蓝宇科维科技有限公司 | Smoke sampler capable of realizing representative sampling |
| CN105181391A (en) * | 2015-08-07 | 2015-12-23 | 解海龙 | Method for guaranteeing realtime performance at dry dust collector ash outlet during automatic sampling |
| CN107664588A (en) * | 2017-11-07 | 2018-02-06 | 北京华清茵蓝科技有限公司 | Isokinetic sample of pulverized coal method and sampler |
| CN108645663A (en) * | 2018-05-09 | 2018-10-12 | 中国神华能源股份有限公司 | Isokinetic sample of pulverized coal device |
| CN110243631A (en) * | 2019-07-04 | 2019-09-17 | 钟原 | A kind of on-line automatic sampler of geological prospecting |
| CN111504710A (en) * | 2020-05-07 | 2020-08-07 | 浙江浙能长兴发电有限公司 | Compact coal powder sampling and diluting device |
| CN112284987A (en) * | 2020-09-01 | 2021-01-29 | 华电(印尼)玻雅发电公司 | Pulverized coal fineness measurement system |
| CN113295464A (en) * | 2021-04-30 | 2021-08-24 | 江苏沙钢集团有限公司 | Optimized automatic sampling system and method for canned powder materials |
| CN113984454A (en) * | 2021-10-28 | 2022-01-28 | 西安热工研究院有限公司 | Pulverized coal sampling system and method for improving pulverized coal fineness sampling accuracy and environmental protection |
| CN114414315A (en) * | 2021-11-29 | 2022-04-29 | 西安热工研究院有限公司 | Automatic constant-speed sampling device for powder pipe of power station boiler |
| CN114459829A (en) * | 2022-01-26 | 2022-05-10 | 国电长源汉川第一发电有限公司 | Online sampling device and method for air-powder pipe suitable for optical detection technology |
| CN117023155A (en) * | 2023-10-08 | 2023-11-10 | 常州常衡德宇粉体集成系统有限公司 | Powder positive pressure conveying system and conveying method |
| CN118190528A (en) * | 2024-05-13 | 2024-06-14 | 国家海洋技术中心 | Shore-based water quality sampling system and shore-based water quality automatic monitoring system |
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| CN201716216U (en) * | 2010-04-26 | 2011-01-19 | 宁夏电力公司电力科学研究院 | Portable type pulverized coal sampling device |
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2010
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| US4286466A (en) * | 1979-10-09 | 1981-09-01 | International Business Machines Corporation | Method and apparatus for pneumatically sampling powders |
| CN2720423Y (en) * | 2004-07-27 | 2005-08-24 | 杨上雄 | Coal-powder sampling device |
| CN200955998Y (en) * | 2006-09-29 | 2007-10-03 | 徐福林 | Stationery pulverized coal sampling device |
| CN201247165Y (en) * | 2008-06-25 | 2009-05-27 | 西安交通大学 | Fixed coal powder sampler |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759473A (en) * | 2011-04-20 | 2012-10-31 | 徕卡生物系统努斯洛克有限公司 | Tissue sample handling apparatus |
| CN102759473B (en) * | 2011-04-20 | 2017-05-24 | 徕卡生物系统努斯洛克有限公司 | Tissue sample handling apparatus |
| CN102706690A (en) * | 2012-05-25 | 2012-10-03 | 中平能化集团机械制造有限公司 | Novel coal sample collecting device |
| CN102706690B (en) * | 2012-05-25 | 2014-04-30 | 中平能化集团机械制造有限公司 | Novel coal sample collecting device |
| CN103674625A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Sampling device for gas-solid two-phase flow |
| CN103674625B (en) * | 2013-12-12 | 2016-06-22 | 中国神华能源股份有限公司 | Dual-Phrase Distribution of Gas olid sampler |
| CN104297022A (en) * | 2014-11-07 | 2015-01-21 | 成都蓝宇科维科技有限公司 | Smoke sampler capable of realizing representative sampling |
| CN105181391A (en) * | 2015-08-07 | 2015-12-23 | 解海龙 | Method for guaranteeing realtime performance at dry dust collector ash outlet during automatic sampling |
| CN105181391B (en) * | 2015-08-07 | 2018-09-28 | 解海龙 | A method of ensureing real-time when dry collector ash hole samples automatically |
| CN107664588A (en) * | 2017-11-07 | 2018-02-06 | 北京华清茵蓝科技有限公司 | Isokinetic sample of pulverized coal method and sampler |
| CN108645663A (en) * | 2018-05-09 | 2018-10-12 | 中国神华能源股份有限公司 | Isokinetic sample of pulverized coal device |
| CN110243631A (en) * | 2019-07-04 | 2019-09-17 | 钟原 | A kind of on-line automatic sampler of geological prospecting |
| CN111504710A (en) * | 2020-05-07 | 2020-08-07 | 浙江浙能长兴发电有限公司 | Compact coal powder sampling and diluting device |
| CN111504710B (en) * | 2020-05-07 | 2023-02-10 | 浙江浙能长兴发电有限公司 | Compact coal powder sampling and diluting device |
| CN112284987A (en) * | 2020-09-01 | 2021-01-29 | 华电(印尼)玻雅发电公司 | Pulverized coal fineness measurement system |
| CN113295464A (en) * | 2021-04-30 | 2021-08-24 | 江苏沙钢集团有限公司 | Optimized automatic sampling system and method for canned powder materials |
| CN113984454A (en) * | 2021-10-28 | 2022-01-28 | 西安热工研究院有限公司 | Pulverized coal sampling system and method for improving pulverized coal fineness sampling accuracy and environmental protection |
| CN114414315A (en) * | 2021-11-29 | 2022-04-29 | 西安热工研究院有限公司 | Automatic constant-speed sampling device for powder pipe of power station boiler |
| CN114459829A (en) * | 2022-01-26 | 2022-05-10 | 国电长源汉川第一发电有限公司 | Online sampling device and method for air-powder pipe suitable for optical detection technology |
| CN114459829B (en) * | 2022-01-26 | 2024-02-06 | 国电长源汉川第一发电有限公司 | Online sampling device and method for air-powder tube suitable for optical detection technology |
| CN117023155A (en) * | 2023-10-08 | 2023-11-10 | 常州常衡德宇粉体集成系统有限公司 | Powder positive pressure conveying system and conveying method |
| CN117023155B (en) * | 2023-10-08 | 2023-12-12 | 常州常衡德宇粉体集成系统有限公司 | Powder positive pressure conveying system and conveying method |
| CN118190528A (en) * | 2024-05-13 | 2024-06-14 | 国家海洋技术中心 | Shore-based water quality sampling system and shore-based water quality automatic monitoring system |
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Open date: 20100818 |