CN2232532Y - Cooling apparatus for coal ash - Google Patents
Cooling apparatus for coal ash Download PDFInfo
- Publication number
- CN2232532Y CN2232532Y CN 94227783 CN94227783U CN2232532Y CN 2232532 Y CN2232532 Y CN 2232532Y CN 94227783 CN94227783 CN 94227783 CN 94227783 U CN94227783 U CN 94227783U CN 2232532 Y CN2232532 Y CN 2232532Y
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- Prior art keywords
- coal ash
- section
- shaft
- rotation direction
- spiral
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Abstract
The utility model relates to a cooling apparatus for coal ash, which belongs to a cooling device and is composed of an interlayer sleeve barrel, an end cover, a helical transport shaft, a sealing member and a transmission member, wherein, the helical transport shaft which is a double helical transport shaft is composed of a big shaft and a small shaft, wherein, the small shaft is sheathed in the big shaft, and the two shafts are arranged on the same horizontal plane and are parallel to the ground. The helical transport shaft is arranged in a casing in the sandwich sleeve barrel and is rearranged on the end cover of the sleeve barrel. Helical blades on the big shaft are discontinuous and are in opposite directions, and the helical blades which are divided into a plurality of sections of helixes have variable screw pitches. The utility model has the advantage that the temperature of coal ash can be greatly reduced; if the temperature of feeding material is 835 DEG C, the temperature of discharging material can be reduced to 56 DEG C, the temperature of entering water is 20 DEG C, and the temperature of discharging water can be increased to 29 DEG C.
Description
The utility model is a kind of Cooling apparatus for coal ash, belongs to cooling device.
Coal gas-chemical industry-thermoelectric three alliance projects are China's one of major projects during the State's Eighth Five-Year Plan period, and φ 2600U-GAS system (seeing shown in Figure 3) that this project has adopted the U.S. is made up of gasification burner 1, Cooling apparatus for coal ash 2 and hopper 3.Cooling apparatus for coal ash 2 in its system (seeing shown in Figure 4) is mainly formed by having water leg tube, end cap, screw conveyor shaft, seal and driving member etc.Screw conveyor shaft is the single-screw blade, and helical blade is continuous, varying pitch not; It places the water leg tube, and becomes 30 degree or 60 degree angles with ground level.Its operation principle is: the coal ash that comes out by gasification burner 1, enter in the Cooling apparatus for coal ash through the import 7 of Cooling apparatus for coal ash 2, and be delivered to outlet 13 through the helical axis of rotation, the coal ash that is cooled is delivered to the next sealing system that pressure is 0.25MPa.Coal ash cooling be by constantly toward having in water leg tube and the helical axis, the indirect cooling by cooling water realizes.Owing to adopt the work of single-screw axle, only play the single effect that coal ash is fed forward, so import is 816 ℃ a high temperature coal ash, in short distance, can not be cooled to 100 ℃ in the Cooling apparatus for coal ash.Trace it to its cause and mainly be: coal ash cools off in the course of conveying in Cooling apparatus for coal ash, can not get stirring fully and rolling, so the coefficient of heat transfer of grey side can not get improving.
In order to overcome inscribing of above-mentioned existence, the purpose of this utility model is to improve the coefficient of heat transfer of grey side and water side, and the high temperature coal ash that makes import is reduced to outlet temperature below 100 degree from 816 degree.
The purpose of this utility model be achieved in that the whole employing of the utility model one cover sealing, inside and outside water leg is the spiral solids delivery device of direct water-cooling.Its screw conveyor shaft is the work of double helix axle, coal ash is stirred fully and rolls and improves the coefficient of heat transfer of grey side.Calculate theoretically, adopt the coefficient of heat transfer of single-screw axle work to have only 40KCal/m
2, hr, C; And after adopting the work of double helix axle, its coefficient of heat transfer is brought up to 120KCal/m
2, about hr, C.The operation principle of double helix axle is: whole helical axis working condition is divided into three sections: first section A carries coal ash to the second section B, the work of second section B is while rolling, carrying with coal ash, the coal ash grating of grain greatly simultaneously, the 3rd section C is delivered to outlet with coal ash.When under the coal ash behind first section A, because of a left side, helical blade on the right axle is continuous in the same way one-way spiral, so coal ash can only be transported to the effect of second section B, the helical blade of second section B adopts varying pitch, discontinuous spiral, from rotation direction for just, anti-phase distribution, left side axle is translated into right axle with coal ash, right axle is fed forward coal ash again and coal ash is translated into left side axle, left side axle is translated into coal ash right axle again, one section of conveying is so repeatedly rolled one section, coal ash is constantly rolled in the Cooling apparatus for coal ash of sealing and carries, so coal ash is able to sufficient stirring, therefore, improved the coefficient of heat transfer of grey side, to guarantee cooling effect.The left and right little axle of suit in the left and right axle of spiral, logical then cooling water, cooling water flows in the interlayer of diaxon, has improved the flow velocity of water; On the relative side face of inside and outside tube with in the two end cap inner chamber, add polylith again, form crooked water channel, current are flowed by certain direction in length and breadth to dividing plate; Owing to adopted above-mentioned method, improved the coefficient of heat transfer of water side, thereby guaranteed the cooling of coal ash.The utility model calculates under the perfect situation with theoretical in technical scheme, the Cooling apparatus for coal ash analogue means that the reduce in scale by 1/2 is made, and through repeatedly hot test repeatedly, its effect has met or exceeded design objective fully.Test data is as follows: advancing grey temperature is 835 ℃, and the ash discharge temperature is 56 ℃; Inflow temperature is 20 ℃, and leaving water temperature is 29 ℃.
The utility model compared with prior art, its advantage: improved the coefficient of heat transfer of grey side and water side, made the high temperature coal ash in short distance, reduced to 56 ℃, surpassed the cooling effect of prior art greatly by 835 ℃ of import.
The utility model can also obtain further instruction from the following drawings and embodiment:
Fig. 1 is the utility model Cooling apparatus for coal ash general structure schematic diagram.
Fig. 2 is the utility model Cooling apparatus for coal ash general structure schematic top plan view.
Fig. 3 is the left and right axle rotation direction of helical blade separately of Fig. 2.
Fig. 4 is prior art U.S. φ 2600U-GAS system schematic.
Fig. 5 is the Cooling apparatus for coal ash general structure schematic diagram in Fig. 4 system.
The drawing explanation:
1 one gasification burners, 2-Cooling apparatus for coal ash, 3-hopper, 4,10-end cap, 5-water inlet pipe, 6-feed pipe, 7-urceolus, 8-inner core, 9-outlet pipe, 11-left side axle, 12-left side axle water inlet, 13-discharge nozzle, 14-left-hand screw blade, 15-left side axle delivery port, 16-right axle, 17-right axle water inlet, 18-right axle delivery port, 19-right-hand screw blade.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:
The utility model is a kind of Cooling apparatus for coal ash, is made up of water leg tube, end cap, screw conveyor shaft, seal and drive disk assembly.Horizontal bush is equipped with water inlet pipe 5, outlet pipe 9 and feed pipe 6 by being nested with an inner core 8 in the urceolus 7 on the outer peripheral face of urceolus 7, discharge nozzle 13 is housed on the side face at the bottom of the outer peripheral face of outlet pipe 9, and feed pipe 6 joins with gasification burner 1, and discharge nozzle 13 links to each other with hopper 3; Screw conveyor shaft is the double helix conveying axis, the double helix axle divides left and right axle 11,16, and left and right helical axis 11,16 is placed among left and right 11,16 by left and right little axle sleeve respectively, left and right axle 11,16 is provided with helical blade 14,19, helical blade the 14, the 19th, discontinuous, reciprocal, varying pitch, and be divided into the plurality of sections spiral.Be that separately helical blade 14,19 is divided into three sections spirals (seeing shown in Figure 3) on the left and right axle 11,16: first section A is continuous one-way spiral; Second section B is the discontinuous spiral of varying pitch, is positive and negative distributing alternately from rotation direction; The 3rd section C and first section spiral that the A rotation direction is opposite.And left and right axle 11,16 both corresponding positions: first section spiral distribution that A is opposite rotation direction, second section spiral distribution that B is identical rotation direction, the 3rd section spiral distribution that C is opposite rotation direction.Two screw conveyor shafts are positioned on the same horizontal plane, and parallel with ground level, place among the water leg tube 8, and be installed on the two end cap 4,10, and end cap 4,10 is loaded on the water leg tube two ends.Cooling water through left and right axle water inlet 12,17 advance in people left side axle 11 and the left-small-axis interlayer and the interlayer of right axle 16 and right-small-axis in, and flow out by the delivery port of left and right axle 15,18, two screw conveyor shafts are cooled off.On inner/outer tube 8, the 7 relative side faces of water leg tube and on end cap 4, the 10 inner chamber side faces, be equipped with polylith in length and breadth to dividing plate, form crooked water channel, current are flowed by certain direction, prolong the heat-exchange time of current, improve cooling effect.
Claims (2)
1. an ash cooler is made up of water leg tube, end cap, screw conveyor shaft, seal and driving member; Screw conveyor shaft is that single-screw blade, helical blade are continuous, varying pitch not; It places water centre sleeve, and has angle with ground level; It is characterized in that:
A. screw conveyor shaft is the double helix conveying axis, this diaxon is placed among left and right axle (11), (16) by left and right little axle sleeve respectively, left and right axle (11), (16) are provided with helical blade (14), (19), helical blade (14), (19) are discontinuous, reciprocal, varying pitch and are divided into the plurality of sections spiral, two screw conveyor shafts are positioned on the same horizontal plane, and parallel with ground level, place among the water leg tube (8), and be installed on two end cap (4), (10); And end cap (4), (10) are loaded on the water leg tube two ends;
B. reach on the inner peripheral surface of end cap (4), (10) on the side face relatively in inner/outer tube (8), (7) of water leg tube, be equipped with polylith in length and breadth to dividing plate.
2. Cooling apparatus for coal ash according to claim 1 is characterized in that: separately helical blade (14), (19) are divided into three sections spirals on left and right axle (11), (16): first section A is continuous one-way spiral; Second section B is the discontinuous spiral of varying pitch, from rotation direction is positive and negative distributing alternately, the 3rd section C and first section spiral that the A rotation direction is opposite, left and right two axles (11), (16) corresponding position: first section spiral distribution that A is opposite rotation direction, second section spiral distribution that B is identical rotation direction, the 3rd section spiral distribution that C is opposite rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94227783 CN2232532Y (en) | 1994-03-02 | 1994-03-02 | Cooling apparatus for coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94227783 CN2232532Y (en) | 1994-03-02 | 1994-03-02 | Cooling apparatus for coal ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2232532Y true CN2232532Y (en) | 1996-08-07 |
Family
ID=33840456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94227783 Expired - Fee Related CN2232532Y (en) | 1994-03-02 | 1994-03-02 | Cooling apparatus for coal ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2232532Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998053252A1 (en) * | 1997-05-18 | 1998-11-26 | Huiqin Gong | Method of transporting slag in water-cooled or water-air-cooled cooler and cooler thereof |
| CN100538246C (en) * | 2007-10-24 | 2009-09-09 | 石家庄新宇三阳实业有限公司 | DDGS protein feed cooling device |
| CN106216229A (en) * | 2016-07-28 | 2016-12-14 | 宁夏大学 | Earth and rock separation batch mixer |
| CN108302959A (en) * | 2017-12-12 | 2018-07-20 | 中国石油天然气集团公司 | Heat-exchanger rig |
-
1994
- 1994-03-02 CN CN 94227783 patent/CN2232532Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998053252A1 (en) * | 1997-05-18 | 1998-11-26 | Huiqin Gong | Method of transporting slag in water-cooled or water-air-cooled cooler and cooler thereof |
| CN100538246C (en) * | 2007-10-24 | 2009-09-09 | 石家庄新宇三阳实业有限公司 | DDGS protein feed cooling device |
| CN106216229A (en) * | 2016-07-28 | 2016-12-14 | 宁夏大学 | Earth and rock separation batch mixer |
| CN108302959A (en) * | 2017-12-12 | 2018-07-20 | 中国石油天然气集团公司 | Heat-exchanger rig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |