CN201247165Y - Fixed coal powder sampler - Google Patents
Fixed coal powder sampler Download PDFInfo
- Publication number
- CN201247165Y CN201247165Y CNU2008200294325U CN200820029432U CN201247165Y CN 201247165 Y CN201247165 Y CN 201247165Y CN U2008200294325 U CNU2008200294325 U CN U2008200294325U CN 200820029432 U CN200820029432 U CN 200820029432U CN 201247165 Y CN201247165 Y CN 201247165Y
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- CN
- China
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- sampling
- internal
- stopple coupon
- external casing
- screw
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Abstract
The utility model discloses a fixed type coal powder sampling device, which comprises an inner-outer sleeve type sampling tube, wherein the inlet end of the inner-outer sleeve type sampling tube is connected with a sealing valve, one end of the sealing valve is connected with an overall support, the other end is connected with an opening of a primary wind tube, the outlet end of the inner-outer sleeve type sampling tube is connected with a change-over valve of sampling and purging and a turboseparator, the change-over valve of sampling and purging is connected with a lifting jet, the lifting jet is connected with a sampling pressure adjusting valve through a piezometer seat, the turboseparator, is connected with the lower portion of the lifting jet, a sampling bottle is arranged on the lower portion of the turboseparator, a lead-screw support and a lead-screw are arranged on the overall support, the lead-screw support is connected with the lead-screw through a screw connecting rod, and the screw connecting rod is connected with the inner-outer sleeve type sampling tube. The fixed type coal powder sampling device of the utility model has the advantages that the sampling process can be operated only by one people, the sampling can be carried out at any time, the site operation is simple, the structure is compact, the installation is convenient, and the operation of sampling and purging can be completed only through respectively opening and closing the three valves by one time.
Description
Technical field
The utility model relates to a kind of sampler of safe operation of the boiler, particularly a kind of fixed coal fines sampling apparatus.
Background technology
The fineness of coal dust is the important parameter that coal powder boiler combustion is adjusted, and directly influences the safety and economic operation of boiler.Therefore, need measure fineness of pulverized coal exactly, thereby purpose can be arranged, in a planned way control, adjust burning, realize the method for operation of boiler the best.
In the unit pulverized-coal system owing to there is not a Pulverized Coal Bin, in order to determine fineness of pulverized coal, have only that obtaining the coal dust sample from an airduct measures.At present, traditional coal dust sampling mode complex operation, labour intensity is big, and is representative poor.How can from an airduct, obtain representative coal dust sample quickly and easily and to become key.
Summary of the invention
The defective or the deficiency of the sampling mode that exists at above-mentioned prior art, the purpose of this utility model is, a kind of simple, easy to operate, representative fixed coal fines sampling apparatus of materialsing of installing is provided.
In order to realize above-mentioned task, the utility model adopts following technical solution:
A kind of fixed coal fines sampling apparatus, it is characterized in that, this device comprises 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 sampling process, can take a sample at any time, and execute-in-place is simple, and three valves only need open and close operation, and each once just can finish sampling and purging work.Adopt internal and external casing formula stopple coupon, can avoid the stopple coupon dewfall and stop up, compact overall structure, easy for installation.
Description of drawings
Fig. 1 is an apparatus structure synoptic diagram of the present utility model; Label among the figure is represented respectively: 1, sampling pressure variable valve, 2, injector, 3, whirlwind, 4, collection sample bottle, 5. sampling and purge cross-over valve, 6, draught excluder, 7, internal and external casing formula stopple coupon, 8, integral support, 9, leading screw support, 10, leading screw, 11, the screw connecting rod.
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment
Referring to Fig. 1, fixed coal fines sampling apparatus of the present utility model, comprise an internal and external casing formula stopple coupon 7, the entrance point of this internal and external casing formula stopple coupon 7 is connected with draught excluder 6, draught excluder 6 one ends link to each other with integral support 8, the other end links to each other with an airduct opening, the endpiece of internal and external casing formula stopple coupon 7 is connected with sampling and purges cross-over valve 5 and whirlwind 3, blowing sampling links to each other with injector 2 with purging cross-over valve 5, injector 2 is connected with sampling pressure variable valve 1 by the pressure gauge stand, whirlwind (3) is connected the below of injector 2, and whirlwind 3 belows are equipped with collection sample bottle 4; Integral support 8 is provided with leading screw support 9 and leading screw 10, between leading screw support 9 and the leading screw 10 screw connecting rod 11 is arranged, and this screw connecting rod 11 links to each other with internal and external casing formula stopple coupon 7.
Principle of the present utility model is: studies show that, higher and when fully developing when gas, powder mixture flowing velocity in the straight tube pipeline, the distribution of particles of coal dust can be thought to be symmetrically distributed with the center on pipeline section in the pipeline, thereby obtains the characteristic that a certain amount of coal dust can obtain this powder along the straight tube diametric(al).When the gas velocity of stopple coupon suction inlet equated with the gas velocity of an airduct, the coal dust that is extracted in the stopple coupon was the most representative, i.e. isokinetic sampling's principle.According to Bernoulli equation, adjust the sampling pressure variable valve, make P1-P2=0.
In the embodiment shown in fig. 1, the interior pipe of internal and external casing formula stopple coupon 7 is a sampling pipette, and outer tube is weary gas gas outlet, and interior pipe stretches out with whirlwind 3 from outer tube back-end portion and links to each other, connect fairlead at outer tube rearward end tube wall place, sampling is housed on fairlead and purges cross-over valve 5.
The internal and external casing formula stopple coupon 7 flexible lead screw transmission that adopt, one end of screw connecting rod 11 is connected with internal and external casing formula stopple coupon 7, rotate the leading screw handwheel of screw connecting rod 11, internal and external casing formula stopple coupon 7 is put in airduct, radially move forward and backward along pipeline and extract the coal dust sample.
One end of sampling pressure variable valve 1 is connected with pressurized air, regulates this sampling pressure variable valve 1 adjustable seamless air pressure that contracts, to realize the isokinetic sampling.
Fixed coal powder sampler of the present utility model has following characteristics:
1, this device can be realized primary wind and powder by regulating compressed air pressure (being regulated by pressure gauge reading) Ducted isokinetic sampling. According to isokinetic sampling's principle, the suction velocity of sample tap with on every side come flow velocity Degree equates.
The rotational lead screw handwheel makes sampling pipette radially do the free-extension motion at pipeline when 2, taking a sample, at pipeline Radially different points are obtained coal sample, guarantee that obtained coal dust sample is representative.
3, device adopts inner-outer sleeve tubular type probe tube, can avoid the probe tube dewfall and stops up. Do not working The time, probe tube can move back to outside the coal pipe, has avoided primary wind and powder stream that washing away of probe tube caused Wearing and tearing.
4, realized that the weary gas that powder is flowed through behind the cyclone separator is transmitted back to airduct one time, has eliminated the environment dirt Dye problem.
5, because this device when installing, only needs open an eyelet welding on a wind pipe wall connect this device and get final product, easy for installation.
Claims (4)
1. fixed coal fines sampling apparatus, it is characterized in that, this device comprises an internal and external casing formula stopple coupon (7), the entrance point of this internal and external casing formula stopple coupon (7) is connected with draught excluder (6), draught excluder (6) one ends link to each other with integral support (8), the other end links to each other with an airduct opening, the endpiece of internal and external casing formula stopple coupon (7) is connected with sampling and purges cross-over valve (5) and whirlwind (3), blowing sampling links to each other with injector (2) with purging cross-over valve (5), injector (2) is connected with sampling pressure variable valve (1) by the pressure gauge stand, whirlwind (3) is connected the below of injector (2), and whirlwind (3) below is equipped with collection sample bottle (4); Integral support (8) is provided with leading screw support (9) and leading screw (10), between leading screw support (9) and the leading screw (10) screw connecting rod (11) is arranged, and this screw connecting rod (11) links to each other with internal and external casing formula stopple coupon (7).
2. fixed coal fines sampling apparatus as claimed in claim 1 is characterized in that, the structure of described internal and external casing formula stopple coupon (7) is: interior pipe is a sampling pipette, and outer tube is weary gas gas outlet.
3. fixed coal fines sampling apparatus as claimed in claim 1 or 2, it is characterized in that, the flexible lead screw transmission that adopts of described internal and external casing formula stopple coupon (7), one end of screw connecting rod (11) is connected with internal and external casing formula stopple coupon (7), rotate the leading screw handwheel of screw connecting rod (11), internal and external casing formula stopple coupon (7) is put in airduct, radially move forward and backward along pipeline and extract the coal dust sample.
4. fixed coal fines sampling apparatus as claimed in claim 1 is characterized in that being, an end of described sampling pressure variable valve (1) is connected with pressurized air, regulates the adjustable seamless of this sampling pressure variable valve (1) air pressure that contracts, to realize the isokinetic sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294325U CN201247165Y (en) | 2008-06-25 | 2008-06-25 | Fixed coal powder sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294325U CN201247165Y (en) | 2008-06-25 | 2008-06-25 | Fixed coal powder sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247165Y true CN201247165Y (en) | 2009-05-27 |
Family
ID=40730986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200294325U Expired - Fee Related CN201247165Y (en) | 2008-06-25 | 2008-06-25 | Fixed coal powder sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201247165Y (en) |
Cited By (2)
| 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 |
| CN104568505A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | On-site coal powder sampling device capable of realizing isokinetic sampling |
-
2008
- 2008-06-25 CN CNU2008200294325U patent/CN201247165Y/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN104568505A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | On-site coal powder sampling device capable of realizing isokinetic sampling |
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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: 20090527 Termination date: 20100625 |