CN102890013B - Flying ash sampler and ash removal system for thermal power plant - Google Patents
Flying ash sampler and ash removal system for thermal power plant Download PDFInfo
- Publication number
- CN102890013B CN102890013B CN201210376399.4A CN201210376399A CN102890013B CN 102890013 B CN102890013 B CN 102890013B CN 201210376399 A CN201210376399 A CN 201210376399A CN 102890013 B CN102890013 B CN 102890013B
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- Prior art keywords
- ash
- sampler
- stopple coupon
- fly ash
- bottle
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- 238000005070 sampling Methods 0.000 claims abstract description 37
- 239000002956 ash Substances 0.000 claims description 64
- 239000010881 fly ash Substances 0.000 claims description 41
- 238000010926 purge Methods 0.000 claims description 33
- 230000002000 scavenging effect Effects 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 6
- 239000000428 dust Substances 0.000 description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a flying ash sampler and an ash removal system for a thermal power plant provided with the flying ash sampler. The flying ash sampler comprises a sampling tube (1), a separation device and an ash collecting bottle (8), wherein the separation device comprises a separation bottle (7), wherein the separation bottle (7) is provided with an air outlet (9) and an ash outlet (10); a filtering part (11) is arranged at the air outlet (9); one end of the sampling tube (1) is provided with a sampling port (3), and the other end of the sampling tube (1) is connected to the separation bottle (7); and the ash collecting bottle (8) is detachably connected to the ash outlet (10) of the separation bottle (7). The flying ash sampler is used for sampling in a positive pressure area, and the sampling is easy and rapid.
Description
Technical field
The present invention relates to field of thermal power, particularly, relate to a kind of fly ash sampler and be provided with the ash disposal system of thermal power plant of this fly ash sampler.
Background technology
In thermal power generation process, need to collect flying dust from boiler exhaust gas pipeline, so that by being boiler thermal output to the mensuration of unburned carbon in flue dust, scientific algorithm provides reliable basis.At present, thermal power plant adopts impact type fly ash sampler or employing to amass formula sampler to carry out Fly ash sampling substantially, fly ash sampler be mostly arranged in be connected to air preheater outlet horizontal flue on, this position is at negative pressure region, flying dust collects difficulty, difficulty is brought to the sampling of operating personnel, and be difficult to obtain real and meet the sample of the actual composition of flying dust, so just difficulty is caused to the Measurement accuracy of unburned carbon in flue dust, then cannot provide reliable basis for the scientific algorithm of boiler thermal output.
Summary of the invention
The object of this invention is to provide a kind of fly ash sampler, this fly ash sampler is used for sampling at barotropic field, and sampling is easy and quick.
The present invention also aims to the ash disposal system providing a kind of thermal power plant, this ash disposal system is provided with fly ash sampler on ash removal pipe, and ash removal pipe is barotropic field and flying dust concentration is high, is conducive to obtaining the sample meeting the actual composition of flying dust more quickly.
To achieve these goals, the invention provides a kind of fly ash sampler, this fly ash sampler comprises stopple coupon, tripping device and collecting the gray bottle, described tripping device comprises separating bottle, this separating bottle has exhausr port and ash discharging hole, and described exhaust ports is provided with filter house, and one end of described stopple coupon is provided with sample tap, the other end is connected to described separating bottle, and described collecting the gray bottle is removably connected to the ash discharging hole of described separating bottle.
Preferably, described stopple coupon is provided with sampling operation valve, described sampling operation valve is removably connected on described stopple coupon.
Preferably, described stopple coupon comprises the first purging portion for blowing to described sample tap, and this first purging portion is connected to described stopple coupon.
Preferably, described first purging portion comprises the first scavenging duct, and one end of this first scavenging duct is connected to described stopple coupon, and the other end is provided with the first pressure gas interface, this first scavenging duct is provided with the first purging operation valve.
Preferably, described first scavenging duct is connected to the upside of described stopple coupon and upwards extends.
Preferably, described exhausr port is arranged on the top of described separating bottle, and described filter house is arranged on the top of described exhausr port.
Preferably, described tripping device comprises the second purging portion, this the second purging portion comprises web member and the second scavenging duct, described web member covers the top of described filter house and this web member is provided with connecting hole, one end of described second scavenging duct is connected to described connecting hole, and the other end is provided with the second pressure gas interface.
Preferably, described tripping device also comprises ash block tube, and this ash block tube is arranged in described separating bottle, and one end of this ash block tube is connected to described exhausr port, and this ash block tube blocks the described other end of described stopple coupon to downward-extension.
The present invention also provides a kind of ash disposal system of thermal power plant, and this ash disposal system comprises ash removal pipe, and described ash removal pipe is provided with fly ash sampler, and this fly ash sampler is described fly ash sampler.
Preferably, described ash removal pipe is provided with sampler connecting hole, described one end of described stopple coupon connects and is fixed on described sampler connecting hole, and the airflow direction angulation of described stopple coupon and described ash removal pipe is 25 ° ~ 35 °.
Fly ash sampler according to the present invention is applicable to sample in barotropic field, such as sample on the ash removal pipe that flying dust concentration is larger, during sampling, gas in barotropic field carries flying dust and is entered in this stopple coupon by sample tap and then enter in tripping device, separating bottle is provided with filter house at exhausr port, gas can be expelled to outside separating bottle by this filter house, but flying dust is blocked in separating bottle, and flying dust is deposited in separating bottle under gravity, and enter in collecting the gray bottle through ash discharging hole, collecting the gray bottle is pulled down from separating bottle, flying dust sample can be got easily analyze to carry out detection.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the fly ash sampler according to the preferred embodiment of the present invention;
Fig. 2 is the schematic diagram of the installation form of display fly ash sampler according to the present invention on ash removal pipe.
Description of reference numerals
1 stopple coupon 2 samples operation valve 3 sample tap
4 first scavenging ducts 5 first purge operation valve 6 first pressure gas interface
7 separating bottle 8 collecting the gray bottle 9 exhausr ports
10 ash discharging hole 11 filter house 12 web members
13 second scavenging duct 14 second pressure gas interface 15 ash block tubes
16 ash removal pipes
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality such as " upper and lower " of use normally defines at fly ash sampler provided by the invention under normal usage with " vertical, level ", and also consistent with reference to direction shown in accompanying drawing; " inside and outside " refers to profile inside and outside relative to each parts itself.
The invention provides a kind of fly ash sampler, see Fig. 1, this fly ash sampler comprises stopple coupon 1, tripping device and collecting the gray bottle 8, described tripping device comprises separating bottle 7, this separating bottle 7 has exhausr port 9 and ash discharging hole 10, and exhausr port 9 place is provided with filter house 11, and one end of described stopple coupon 1 is provided with sample tap 3, the other end is connected to separating bottle 7, and collecting the gray bottle 8 is removably connected to the ash discharging hole 10 of separating bottle 7.
Fly ash sampler according to the present invention is applicable to carry out sample analysis at barotropic field, such as can be arranged on the ash removal pipe of ash disposal system of thermal power plant, during sampling, gas in barotropic field carries flying dust and enters stopple coupon 1 by sample tap 3 and then enter in separating bottle 7 by stopple coupon 1, separating bottle 7 is provided with filter house 11 at exhausr port 9, gas can be expelled to outside separating bottle 7 by this filter house 11, but flying dust has been blocked in separating bottle 7, and flying dust is deposited in separating bottle 7 under gravity, and enter in collecting the gray bottle 8 through ash discharging hole 10, collecting the gray bottle 8 is pulled down from separating bottle 7, flying dust sample can be got easily analyze to carry out detection.
Preferably, stopple coupon 1 can be provided with sampling operation valve 2, in this case, can this fly ash sampler is arranged on device to be sampled for a long time, when not sampling, sampling operation valve 2 be closed, during sampling, open sampling operation valve 2 and sample.Further, sampling operation valve 2 can removably be connected on stopple coupon 1, such as, in present embodiment, sampling operation valve 2 is ball valve, and the connecting pipe at these ball valve two ends is threaded with stopple coupon 1, can be convenient for changing sampling operation valve 2 like this when sampling operation valve 2 and damaging.
As a kind of preferred implementation, this stopple coupon 1 also comprises the first purging portion for blowing to sample tap 3, and this first purging portion is connected to stopple coupon 1.Due to stopple coupon 1 sample tap 3 and device to be sampled (such as, the ash removal pipe of ash disposal system) connect, the gas carrying flying dust in this device enters in fly ash sampler by sample tap 3, especially when in the gas in this device, flying dust concentration is larger, the part Chang Rongyi of the close sample tap 3 of sample tap 3 and stopple coupon 1 is blocked by flying dust, cannot sample smoothly, therefore, after first purging portion is set, the first purging portion can be used to purge sample tap 3 sampling not up time, prevent flying dust from blocking sample tap 3 and stopple coupon 1, ensure that sampling is carried out smoothly.
Described first purging portion can be set to the form of any appropriate, such as, see Fig. 1, first purging portion can comprise the first scavenging duct 4, one end of this first scavenging duct 4 is connected to stopple coupon 1, the other end is provided with the first pressure gas interface 6, this first scavenging duct 4 is provided with the first purging operation valve 5.When normally sampling, first purges operation valve 5 is in closed condition, when occurring sampling not up time, open the first purging operation valve 5, and the blow vent of extraneous pressure gas is connected with the first pressure gas interface 6, pressure gas passes into purge towards sample tap 3 from the first pressure gas interface 6, and wherein said first purges operation valve 5 can adopt ball valve.
Preferably, the first scavenging duct 4 is connected to the upside of stopple coupon 1 and upwards extends, and the gas when carrying flying dust can be avoided like this to be deposited in the first scavenging duct 4 by flying dust during stopple coupon 1.And, as shown in Figure 1, first scavenging duct 4 can be set to bend near a section of described one end, and sampling direction (airflow direction when namely sampling in stopple coupon 1 of this bending one section of first scavenging duct 4 and stopple coupon 1, corresponding in Fig. 1 being direction from right to left) in acute angle, the remainder of stopple coupon 1 then extends vertically upward, and in this case, the pressure gas be blown in stopple coupon 1 by the first scavenging duct 4 blows towards direction, sample tap 3 place.
In addition, tripping device also can be set to the form of any appropriate, and under preferable case, as shown in Figure 1, exhausr port 9 is arranged on the top of separating bottle 7, and filter house 11 is arranged on the top of exhausr port 9.Because the proportion of flying dust is larger than air, therefore, flying dust in gas moves downward under gravity in separating bottle 7, top exhausr port 9 being arranged on separating bottle 7 can make the flying dust at arrival exhausr port 9 place as far as possible few, filter house 11 is arranged on the top of exhausr port 9, make the flying dust at arrival filter house 11 place as far as possible few further, thus blocked by flying dust after effectively avoiding filter house 11 to be stained with a large amount of flying dust, extend the serviceable life of filter house 11, filter house 11 can by filter screen, filter cloth or filter pulp etc. are made, and at exhausr port 9 place, a fabricated section can be set, the fabricated section being positioned at the ring-type above exhausr port 9 such as shown in Fig. 1, so that filter house 11 is fixed on this fabricated section.
Because in sampling process, flying dust inevitably to adhere on filter house 11 and filter house 11 may be caused to block, therefore, preferably, tripping device also comprises the second purging portion, this the second purging portion is used for purging to clear up filter house 11 to filter house 11, as a kind of embodiment, this the second purging portion comprises web member 12 and the second scavenging duct 13, web member 12 covers the top of filter house 11 and this web member 12 is provided with connecting hole, one end of second scavenging duct 13 is connected to connecting hole, and the other end is provided with the second pressure gas interface 14.For the fly ash sampler shown in Fig. 1, in normal sampling situation, gas after filtration after portion 11 filtration can be exposed to extraneous sidewall from filter house 11 and the second pressure gas interface 14 drains into the external world, when on filter house 11 long-pending have a large amount of dust after, the blow vent of extraneous pressure gas is connected with the second pressure gas interface 14, pressure gas passes into purge filter house 11 from the second pressure gas interface 14, web member 12 covers filter house 11 top then can expand purging scope, improve and purge efficiency, by purging the serviceable life that can extend filter house 11, avoid frequently changing filter house 11.
In addition, under preferable case, see Fig. 1, tripping device also comprises ash block tube 15, and this ash block tube 15 is arranged in separating bottle 7, and one end of this ash block tube 15 is connected to exhausr port 9, and this ash block tube 15 blocks the described other end of stopple coupon 1 to downward-extension.The gas carrying flying dust enters after separating bottle 7 from the described other end of stopple coupon, be subject to blocking of ash block tube 15, flying dust can move downward and be deposited on bottom separating bottle 7, therefore the deposition of flying dust can be accelerated, make sampling rapider, and need when gas is discharged from separating bottle 7 first could arrive exhausr port 9 and filter house 11 through ash block tube 15, further reduce the flying dust arriving filter house 11, prevent flying dust from blocking filter house 11.
Present invention also offers a kind of ash disposal system of thermal power plant, this ash disposal system comprises ash removal pipe 16, and fly ash sampler according to the present invention is arranged on this ash removal pipe 16.Because ash removal pipe 16 is barotropic field, and the concentration of flying dust is larger in ash removal pipe 16, therefore, this fly ash sampler is utilized to sample on ash removal pipe 16 easily and rapidly, and the sample meeting the actual composition of flying dust can be obtained, thus ensure the Measurement accuracy of unburned carbon in flue dust, then for the scientific algorithm of boiler thermal output provides reliable basis.
Particularly, sampler connecting hole can be set on ash removal pipe 16, described one end of stopple coupon 1 connects and is fixed on this sampler connecting hole, and stopple coupon 1 and the airflow direction angulation of ash removal pipe 16 be 25 ° ~ 35 ° (see Fig. 2, the direction of arrow is the airflow direction of ash removal pipe 16, and stopple coupon 1 and the angle of the airflow direction of ash removal pipe 16 are a), enter in ash removal pipe 16 with air-flow to facilitate flying dust.
In thermal power plant, ash removal pipe 16 is connected with the endpiece of dust arrester, not only flying dust concentration is large and be barotropic field, fly ash sampler of the present invention is applied on ash removal pipe 16, carries out Fly ash sampling, compared to using the sampling in the horizontal flue (negative pressure region) being connected to air preheater outlet of the fly ash sampler of prior art, more convenient, quick and accurate, and, those skilled in the art are to be understood that, fly ash sampler of the present invention also may be used for other device be applicable to and samples other material, such as, this fly ash sampler can be used for sampling limestone powder at the lime stone pipeline of thermal power plant.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. a fly ash sampler, it is characterized in that, this fly ash sampler comprises stopple coupon (1), tripping device and collecting the gray bottle (8), described tripping device comprises separating bottle (7), this separating bottle (7) has exhausr port (9) and ash discharging hole (10), described exhausr port (9) place is provided with filter house (11), one end of described stopple coupon (1) is provided with sample tap (3), extension that the other end is straight is also connected to described separating bottle (7), described collecting the gray bottle (8) is removably connected to the ash discharging hole (10) of described separating bottle (7), described exhausr port (9) is arranged on the top of described separating bottle (7), and described filter house (11) is arranged on the top of described exhausr port (9), described tripping device comprises the second purging portion, this the second purging portion comprises web member (12) and the second scavenging duct (13), described web member (12) covers the top of described filter house (11) and this web member (12) is provided with connecting hole, one end of described second scavenging duct (13) is connected to described connecting hole, the other end is provided with the second pressure gas interface (14).
2. fly ash sampler according to claim 1, wherein, described stopple coupon (1) is provided with sampling operation valve (2), described sampling operation valve (2) is removably connected on described stopple coupon (1).
3. fly ash sampler according to claim 1, wherein, described stopple coupon (1) comprises the first purging portion for blowing to described sample tap (3), and this first purging portion is connected to described stopple coupon (1).
4. fly ash sampler according to claim 3, wherein, described first purging portion comprises the first scavenging duct (4), one end of this first scavenging duct (4) is connected to described stopple coupon (1), the other end is provided with the first pressure gas interface (6), this first scavenging duct (4) is provided with the first purging operation valve (5).
5. fly ash sampler according to claim 4, wherein, described first scavenging duct (4) is connected to the upside of described stopple coupon (1) and upwards extends.
6. fly ash sampler according to claim 1, wherein, described tripping device also comprises ash block tube (15), this ash block tube (15) is arranged in described separating bottle (7), one end of this ash block tube (15) is connected to described exhausr port (9), and this ash block tube (15) blocks the described other end of described stopple coupon (1) to downward-extension.
7. the ash disposal system of a thermal power plant, this ash disposal system comprises ash removal pipe (16), it is characterized in that, (16) are provided with fly ash sampler to described ash removal pipe, and this fly ash sampler is for according to the fly ash sampler in claim 1-6 described in any one.
8. the ash disposal system of thermal power plant according to claim 7, wherein, (16) are provided with sampler connecting hole to described ash removal pipe, described one end of described stopple coupon (1) connects and is fixed on described sampler connecting hole, and described stopple coupon (1) is 25 ° ~ 35 ° with the airflow direction angulation of described ash removal pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376399.4A CN102890013B (en) | 2012-09-29 | 2012-09-29 | Flying ash sampler and ash removal system for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376399.4A CN102890013B (en) | 2012-09-29 | 2012-09-29 | Flying ash sampler and ash removal system for thermal power plant |
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| Publication Number | Publication Date |
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| CN102890013A CN102890013A (en) | 2013-01-23 |
| CN102890013B true CN102890013B (en) | 2014-12-31 |
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| CN201210376399.4A Active CN102890013B (en) | 2012-09-29 | 2012-09-29 | Flying ash sampler and ash removal system for thermal power plant |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311889A (en) * | 2014-07-11 | 2016-02-10 | 张广舜 | Multipurpose dedusting apparatus |
| CN104568560A (en) * | 2014-12-30 | 2015-04-29 | 青岛恒远科技发展有限公司 | Device for removing particulate matters and droplets in air channels |
| CN105737177B (en) * | 2016-03-22 | 2018-05-25 | 大唐贵州野马寨发电有限公司 | A kind of ash-transmission system is from ash exhauster |
| CN107238546A (en) * | 2017-06-15 | 2017-10-10 | 浙江大学 | Thermal power plant's flying marking amount detecting device and method based on radio-frequency technique |
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