CN201716216U - Portable type pulverized coal sampling device - Google Patents
Portable type pulverized coal sampling device Download PDFInfo
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- CN201716216U CN201716216U CN2010201697284U CN201020169728U CN201716216U CN 201716216 U CN201716216 U CN 201716216U CN 2010201697284 U CN2010201697284 U CN 2010201697284U CN 201020169728 U CN201020169728 U CN 201020169728U CN 201716216 U CN201716216 U CN 201716216U
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- sampling
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- pipeline
- pipe
- stopple coupon
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Abstract
The utility model relates to a measuring device, in particular to a portable type pulverized coal sampling device, comprising a negative-pressure generator, a sampling gun, a cyclone separation device which is connected with the sampling gun through a pipeline and a sample storage tank which is arranged on the cyclone separation device. The portable type pulverized coal sampling device is characterized in that the tubular sampling gun is internally provided with a pressure measuring pipe and a sampling pipe which is connected with an air inlet of the cyclone separation device through a pipeline, and an air outlet of the cyclone separation device is connected with a negative-pressure port of the negative-pressure generator; an air inlet of the negative-pressure generator is connected with compressed air through an electric control valve, and an exhaust gas outlet of the negative-pressure generator is communicated with the tubular sampling gun through a pipeline; the pressure measuring pipe and the sampling pipe are both provided with a pressure sensor and a back blow pipe, wherein the back blow pipes mounted on the pressure measuring pipe and the sampling pipe are communicated with a compression air source through valves, and two pressure sensors and the electric control valves mounted on the pressure measuring pipe and the sampling pipe are electrically connected with a pressure control device. The portable type pulverized coal sampling device can accurately achieve the purpose of isokinetic sampling.
Description
Technical field
The utility model patent 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 purpose of this utility model is to realize that easily 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, the technical solution of the utility model 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.
Above-mentioned cyclone separator is to be in series by two or more cyclone separators.
The utlity model 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 the utility model structure principle chart;
Accompanying drawing 2 is the structural representation of the utility model sampling gun.
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 |
|---|---|---|---|
| CN2010201697284U CN201716216U (en) | 2010-04-26 | 2010-04-26 | Portable type pulverized coal sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201697284U CN201716216U (en) | 2010-04-26 | 2010-04-26 | Portable type pulverized coal sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716216U true CN201716216U (en) | 2011-01-19 |
Family
ID=43462221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201697284U Expired - Fee Related CN201716216U (en) | 2010-04-26 | 2010-04-26 | Portable type pulverized coal sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201716216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104316358A (en) * | 2014-10-31 | 2015-01-28 | 成都蓝宇科维科技有限公司 | Coal powder sampler |
| CN105203352A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Non-contact suction-type sampling device |
| CN113340669A (en) * | 2021-07-05 | 2021-09-03 | 国能神皖能源有限责任公司 | Full-automatic powder tube sampling device and method for LIBS coal quality on-line analysis |
-
2010
- 2010-04-26 CN CN2010201697284U patent/CN201716216U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105203352A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Non-contact suction-type sampling device |
| CN104316358A (en) * | 2014-10-31 | 2015-01-28 | 成都蓝宇科维科技有限公司 | Coal powder sampler |
| CN113340669A (en) * | 2021-07-05 | 2021-09-03 | 国能神皖能源有限责任公司 | Full-automatic powder tube sampling device and method for LIBS coal quality on-line analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20120426 |