CN202141049U - Multiunit multilevel air bubble impact atomizing water coal slurry nozzle - Google Patents
Multiunit multilevel air bubble impact atomizing water coal slurry nozzle Download PDFInfo
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- CN202141049U CN202141049U CN201020603645U CN201020603645U CN202141049U CN 202141049 U CN202141049 U CN 202141049U CN 201020603645 U CN201020603645 U CN 201020603645U CN 201020603645 U CN201020603645 U CN 201020603645U CN 202141049 U CN202141049 U CN 202141049U
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Abstract
The utility model belongs to the field of water coal slurry combustion, particularly relates to a multiunit multilevel air bubble impact atomizing water coal slurry nozzle, which includes an atomizing pipe and an atomizing housing (7) connected with the atomizing pipe, and is characterized in that the atomizing pipe includes a first-level atomizing pipe (3) and a second-level atomizing pipe (4), wherein an atomizing piece (4) communicating inner cavities of the first-level atomizing pipe (3) and the second-level atomizing pipe (4) is arranged between the first-level atomizing pipe (3) and the second-level atomizing pipe (4); a spray orifice (16) is arranged on the atomizing housing (7); and first-level atomizing orifices (10) and second-level atomizing orifices (14) are uniformly and respectively formed on the outer walls of the first-level atomizing pipe (3) and the second-level atomizing pipe (4) in the circumferential direction. By combining the multiunit air bubble atomization formed by the first-level atomizing pipe and the atomizing piece and second-level internally-mixed impact atomization of a second-level atomizing cavity, the water coal slurry is satisfactorily atomized under lower gas consumption rate. When the flow rate of the water coal slurry is 600kg/h and the flow rate of the air is 3500 Nm3/h as a test is being performed on a 4-ton boiler, the combustion effect is excellent and the smoke gas blackness Ringleman grade is smaller than 1 under the condition that the gas consumption rate is about 15 percent.
Description
Technical field
The utility model belongs to the cool water mixture burning field, is specifically related to a kind of device of heavy fuel atomizing.
Background technology
Water-coal-slurry is to be directed against the novel clean fuel of a kind of coal-based generation oil that oil crisis grows up the eighties.Because water-coal-slurry is by clean fine coal preparation, its ash content, sulphur content are lower, and sulfur dioxide (SO2) emissions control effect is obvious.In combustion process, the existence of moisture can reduce the combustion flame central temperature, suppress the generation of nitrogen oxide.Water-coal-slurry is a high viscosity fuel liquid, mixes in domestic general employing is multistage and impacts atomizing type.It is longer to mix impact atomizing Pneumatic immpacting atomizing distance in multistage, bigger along the loss of journey pneumatic energy, has reduced atomizing effect.Therefore Alevaire pressure is had relatively high expectations, generally need steam about 0.9MPa as Alevaire.And be more prone in Industrial Boiler usually realize that 0.6MPa compressed air is as Alevaire.Common mix to impact in multistage atomizer with 0.6MPa compressed air during as Alevaire atomizing effect not good.
Summary of the invention
The purpose of the utility model is to provide the multistage bubble of a kind of employing multiple-unit to impact atomizing type, thereby reduces the Alevaire energy loss, even when Alevaire pressure is low, the multistage bubble of the also good multiple-unit of atomizing effect impacts the atomizing coal-water slurry nozzle.
The technical scheme of the utility model is following:
The multistage bubble of a kind of multiple-unit impacts the atomizing coal-water slurry nozzle; The atomizing outer cover that it comprises mist pipe, is connected with mist pipe; Described mist pipe comprises one-level mist pipe and secondary mist pipe, between one-level mist pipe and secondary mist pipe, is provided with the atomizing piece that is communicated with these both inner chambers; Said atomizing outer cover is provided with spout; Said one-level mist pipe and secondary mist pipe have one-level orifice and secondary orifice respectively uniformly on the circumferencial direction of its outer wall.
Impact in the atomizing coal-water slurry nozzle at the multistage bubble of above-mentioned multiple-unit, said atomizing piece is the circular ring plate that has the hole on the circumference, and also processing is provided with a circle boss on annulus; The inner chamber of said secondary mist pipe becomes to amplify shape, and the port of the end that inner chamber is little is provided with circular deep gouge.
Impact in the atomizing coal-water slurry nozzle at the multistage bubble of above-mentioned multiple-unit, described secondary mist pipe is fixedly connected through the outer cover nut with the atomizing outer cover.
Impact in the atomizing coal-water slurry nozzle at the multistage bubble of above-mentioned multiple-unit, be provided with the branching block of trochoidal surface in the said atomizing outer cover.
The beneficial effect of the utility model is: impacting atomizes combines owing to mix in the secondary of multiple-unit effervescent atomization that one-level mist pipe that designs and atomizing piece are formed and secondary atomization chamber; Thereby under low gas consumption rate; Atomizing effect to water-coal-slurry is good, reduces the Alevaire energy loss.
On 4 tons of boilers, test, the water-coal-slurry flow is 600kg/h, and air capacity is 3500Nm
3During/h, under 15% left and right sides gas consumption rate situation, combustion efficiency is good, blackness of exhaustion lingemann grade＜1.
Description of drawings
Fig. 1 is that the multistage bubble of the multiple-unit of the utility model impacts the nozzle-integrated structural representation of atomized water coal slurry;
Fig. 2 is the atomizing piece structural representation;
Among the figure: 1. water-coal-slurry pipeline; 2. Alevaire pipeline; 3. one-level mist pipe; 4. atomizing piece; 5. secondary mist pipe; 6. outer cover nut; 7. atomizing outer cover; 8. branching block; 9. clamp nut; 10. one-level orifice; 11. boss; 12. circular deep gouge; 13. taper seat; 14. secondary orifice; 15. boss platform; 16. spout; 17. installing hole; 18. hole.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
As shown in Figure 1; 3 one-tenth of one-level mist pipe are cylindric, and its end links to each other with water-coal-slurry pipeline 1, and the other end is equipped with atomizing piece 4; The opposite side fixed installation secondary mist pipe 5 of atomizing piece 4, secondary mist pipe 5 and atomizing outer cover 7 are through outer cover nut 6 mechanical being fixed together.Be processed with external screw thread on the outer wall of outer cover nut 6, be processed with internal thread on the inwall of Alevaire pipeline 2, outer cover nut 6 is fixed in the Alevaire pipeline 2 through being threaded.
Have one-level orifice 10 on the sidewall of one-level mist pipe 3 on the circumferencial direction uniformly.Can process 3,4 or 6 on the one circle circumference.Can process 2 rows or 3 rows.
As shown in Figure 2, said atomizing piece 4 is the circular ring plate that has hole 18 on the circumference, on annulus, also is processed with a circle boss 11.
And for example shown in Figure 1; The inner chamber of this secondary mist pipe 5 becomes to amplify shape, and the end that inner chamber is little is connected with atomizing piece 4, the circular deep gouge 12 of port processing one circle of this end; This circle deep gouge 12 cooperates with boss 11 on the atomizing piece 4, makes atomizing piece 4 be stuck in an end of secondary mist pipe 5.Be processed with one section taper seat 13 on secondary mist pipe 5 outer walls, on this taper seat 13 and secondary mist pipe 5 outer walls, circumferencial direction is processed with the Pneumatic immpacting orifice equably, promptly the secondary orifice 14, can process two row's secondary orifices 14.
7 one-tenth bowls of atomizing outer cover type cover shape has installing hole at the bowl bottom center, and the branching block 8 of trochoidal surface passes this installing hole 17 and is installed in atomizing outer cover 7 inside, and further fixing through clamp nut 9; Around the bowl center, the end of atomizing outer cover 7, have some spouts 16; The outer of atomizing outer cover 7 is processed with a circle boss platform 15, and outer cover nut 6 blocks atomizing outer cover 7 through this boss platform 15.
During work, water-coal-slurry gets into one-level mist pipe 3 from water-coal-slurry pipeline 1, and the Alevaire part in the Alevaire pipeline 2 gets into one-level mist pipe 3 through the one-level orifice on the one-level mist pipe 3 10, is blended in water-coal-slurry and forms bubble stream in the water-coal-slurry.The water-coal-slurry that is mixed with great amount of bubbles is through the hole on the atomizing piece 4, thereby is atomized sheet 4 and is divided into multiply and sprays into secondary-atomizing pipe 5.Because secondary-atomizing pipe 5 chamber pressures are lower than pressure in bubbles in the water-coal-slurry, the rapid swelling fracture of bubble discharges Alevaire water-coal-slurry is atomized.Another part Alevaire that comes out from Alevaire pipeline 2 afterwards gets into secondary-atomizing pipe 5 through the secondary orifice on secondary-atomizing pipe 5 tube walls 14, can water-coal-slurry be carried out secondary-atomizing.Water-coal-slurry behind the secondary-atomizing gets in the atomizing outer cover 7, because the design of branching block makes whole spray chamber flow area progressively reduce, becomes convergent passage, so the water-coal-slurry behind the secondary-atomizing is progressively quickened spout 16 ejections from atomizing outer cover 7.
Claims (4)
1. the multistage bubble of multiple-unit impacts the atomizing coal-water slurry nozzle; The atomizing outer cover (7) that it comprises mist pipe, is connected with mist pipe; It is characterized in that: described mist pipe comprises one-level mist pipe (3) and secondary mist pipe (4), between one-level mist pipe (3) and secondary mist pipe (4), is provided with the atomizing piece (4) that is communicated with these both inner chambers; Said atomizing outer cover (7) is provided with spout (16); Said one-level mist pipe (3) and secondary mist pipe (4) have one-level orifice (10) and secondary orifice (14) respectively uniformly on the circumferencial direction of its outer wall.
2. the multistage bubble of a kind of multiple-unit as claimed in claim 1 impacts the atomizing coal-water slurry nozzle, it is characterized in that: said atomizing piece (4) is for having the circular ring plate of hole (18) on the circumference, also processing is provided with a circle boss (11) on annulus; The inner chamber of said secondary mist pipe (5) becomes to amplify shape, and the port of the end that inner chamber is little is provided with circular deep gouge (12).
3. the multistage bubble of according to claim 1 or claim 2 a kind of multiple-unit impacts the atomizing coal-water slurry nozzle, it is characterized in that: described secondary mist pipe (5) is fixedly connected through outer cover nut (4) with the outer cover (7) that atomizes.
4. the multistage bubble of according to claim 1 or claim 2 a kind of multiple-unit impacts the atomizing coal-water slurry nozzle, it is characterized in that: the branching block (6) that is provided with trochoidal surface in the said atomizing outer cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020603645U CN202141049U (en) | 2010-11-11 | 2010-11-11 | Multiunit multilevel air bubble impact atomizing water coal slurry nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020603645U CN202141049U (en) | 2010-11-11 | 2010-11-11 | Multiunit multilevel air bubble impact atomizing water coal slurry nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141049U true CN202141049U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020603645U Expired - Lifetime CN202141049U (en) | 2010-11-11 | 2010-11-11 | Multiunit multilevel air bubble impact atomizing water coal slurry nozzle |
Country Status (1)
| Country | Link |
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| CN (1) | CN202141049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466227A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-unit multi-stage bubble impact atomization coal water slurry nozzle |
| CN102705826A (en) * | 2012-05-07 | 2012-10-03 | 深圳中兴新源环保股份有限公司 | Oil gun capable of combusting various fuel oil |
| CN107626465A (en) * | 2017-09-22 | 2018-01-26 | 上海发电设备成套设计研究院有限责任公司 | A kind of the multi-level fine atomizer and method of the evaporation of waste water of heat-engine plant flue |
-
2010
- 2010-11-11 CN CN201020603645U patent/CN202141049U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466227A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-unit multi-stage bubble impact atomization coal water slurry nozzle |
| CN102705826A (en) * | 2012-05-07 | 2012-10-03 | 深圳中兴新源环保股份有限公司 | Oil gun capable of combusting various fuel oil |
| CN107626465A (en) * | 2017-09-22 | 2018-01-26 | 上海发电设备成套设计研究院有限责任公司 | A kind of the multi-level fine atomizer and method of the evaporation of waste water of heat-engine plant flue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |