CN2505716Y - Negative pressure pulverized coal mixer - Google Patents
Negative pressure pulverized coal mixer Download PDFInfo
- Publication number
- CN2505716Y CN2505716Y CN 01266479 CN01266479U CN2505716Y CN 2505716 Y CN2505716 Y CN 2505716Y CN 01266479 CN01266479 CN 01266479 CN 01266479 U CN01266479 U CN 01266479U CN 2505716 Y CN2505716 Y CN 2505716Y
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- negative pressure
- mixer
- plate
- square
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a negative pressure pulverized coal mixer, belonging to the mixer of pulverized coal and hot air of pulverized coal transmission tube in a generating plant, which is characterized in that a siphon is adopted to weld on a strip arc plate square-round knot which is welded on a square plate; a baffle is welded in a steel tube; a tongue plate is welded with the square plate and the steel tube. The utility model makes the arc plate of the strip arc plate square-round knot insert to the steel tube to a certain depth and the primary air passing by generates drainage to the fallen pulverized coal so as to eliminate the phenomenon of powder-off; besides, a baffle is adopted to lower the resistance of the mixer.
Description
One, technical field
The utility model belongs in the powder feeding pipe of power station and to guarantee that coal dust evenly falls into continuously from the powder sinking tube under the machine supplying powder, with the mixing arrangement of importing boiler combustion after the hot blast of coming in mixes in the lump.
Two, background technology
The coal, pulverulent fuel mixer of existing double bracket plate single face contraction type mainly contains bend pipe, circumference joint, body (steel pipe), dividing plate, hyoplastron, square plate and forms.The self-supporting powder of coal dust and is sent into boiler combustion after the hot-air that enters mixes in the lump between the square plate of bend pipe, circumference joint input dividing plate and body contraction place.It is reasonable that the mixer design of this kind structure is still owed, when reality is used, enter above the dividing plate air will on sweep away in the circumference joint of powder, make the machine supplying powder bottom produce the holder powder phenomenon of malleation to the pipeline of blender, the fall uniformity of powder of influence makes the powder amount that enters burner hearth inhomogeneous, even the disconnected powder phenomenon of appearance, serious will cause boiler pressure, temperature descend, and make the boiler operating parameter instability, are forced to the short time load down.More than these situations put out a fire easily at dry bottom furnace; Inhomogeneous at slag tapping boiler because of four jiaos of wind powder, for the assistanceization slag increases combustion-supporting oil consumption, extremely unfavorable to boiler combustion stability and economy.
Three, summary of the invention
1, goal of the invention: the purpose of this utility model provides and a kind ofly can make wind not produce holder powder phenomenon at place, coal dust whereabouts, resistance is little, can improve the uniformity that enters burner hearth coal amount, improve fire box temperature, make the stable full negative pressure coal, pulverulent fuel mixer of operational factor of boiler combustion.
2, technical scheme: for achieving the above object, full negative pressure coal, pulverulent fuel mixer described in the utility model comprises bend pipe, circumference joint, steel pipe, it is characterized in that being provided with arc at the front end of circumference joint, and this arc inserts in the steel plate.The following square steel tube of arc is provided with a dividing plate that makes pipeline be divided into two passages.
3, beneficial effect: the utility model compared with prior art has the following advantages: the arc of (1), band arc circumference joint inserts the steel pipe certain depth, make a wind of flowing through produce drainage to the powder that falls, band arc circumference saves to the pipeline of machine supplying powder and forms negative pressure, has eliminated holder powder phenomenon.(2), adopt a dividing plate, reduced the resistance of blender.(3), can improve the uniformity that enters burner hearth coal amount, the raising fire box temperature.(4), make the operational factor of boiler combustion stable, reduce the combustion-supporting oil consumption of slag tapping boiler, make four jiaos in boiler dust stratification not substantially, it is unimpeded that cinder notch keeps, and prevented from therefore to cause the boiler with dry bottom furnace fire extinguishing, alleviates operations staff's labour intensity, reduces fuel cost.
Four, description of drawings:
Accompanying drawing is the utility model structural representation.
Five, the specific embodiment:
In conjunction with the accompanying drawings, the utility model adopts bend pipe 1 to be welded on the circumference joint 2, on circumference joint 2 side's of being welded on plates 4, dividing plate 5 is welded in 3 li of steel pipes, make steel pipe 3 separate two passages up and down herein, hyoplastron 6 welds with square plate 4 and steel pipe 3 respectively, makes steel pipe 3 cross sections form contracted section at square plate 4 and hyoplastron 6 places.Front end downside at circumference joint 2 is provided with an arc, and this arc inserts in the steel pipe 3, and the inner edge of its both sides and steel pipe 3 welds.
Claims (2)
1, a kind of full negative pressure coal, pulverulent fuel mixer comprises bend pipe (1), circumference joint (2), steel pipe (3), it is characterized in that being provided with arc at the front end of circumference joint (2), and this arc inserts in the steel plate (2).
2, full negative pressure coal, pulverulent fuel mixer according to claim 1 is characterized in that being provided with a dividing plate that makes pipeline be separated into two passages (5) on the following square steel tube (3) of described arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266479 CN2505716Y (en) | 2001-11-09 | 2001-11-09 | Negative pressure pulverized coal mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266479 CN2505716Y (en) | 2001-11-09 | 2001-11-09 | Negative pressure pulverized coal mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2505716Y true CN2505716Y (en) | 2002-08-14 |
Family
ID=33673146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266479 Expired - Fee Related CN2505716Y (en) | 2001-11-09 | 2001-11-09 | Negative pressure pulverized coal mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2505716Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103492808A (en) * | 2010-10-29 | 2014-01-01 | 通用电气公司 | Solids feeder discharge port |
| CN109051384A (en) * | 2018-09-21 | 2018-12-21 | 中节环立为（武汉）能源技术有限公司 | A kind of anti-blocking powder dust feeder |
-
2001
- 2001-11-09 CN CN 01266479 patent/CN2505716Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103492808A (en) * | 2010-10-29 | 2014-01-01 | 通用电气公司 | Solids feeder discharge port |
| CN103492808B (en) * | 2010-10-29 | 2016-01-27 | 通用电气公司 | Solid dispenser discharge port |
| CN109051384A (en) * | 2018-09-21 | 2018-12-21 | 中节环立为（武汉）能源技术有限公司 | A kind of anti-blocking powder dust feeder |
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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: 20020814 Termination date: 20101109 |