CN202195489U

CN202195489U - Double pipe cooled soot blower

Info

Publication number: CN202195489U
Application number: CN201120243726XU
Authority: CN
Inventors: 朱玥琼; 李环玉; 宋超; 彭传欣
Original assignee: QINGDAO DORIGHT CO Ltd
Priority date: 2011-07-06
Filing date: 2011-07-06
Publication date: 2012-04-18
Anticipated expiration: 2021-07-06

Abstract

The cooling protection manner of the present known single pipe cooled soot blower is to introduce steam into each gas ejector pipe, wherein the steam is fed from one end and exhausted from the tail end. However, as each soot blower is provided with dozens of gas ejector pipes and if the dozens of gas ejector pipes exhaust the gas at the same time, the use amount of the cooling steam is great. A double pipe cooled soot blower provided in the utility model is the improvement of the single pipe cooled soot blower used at present. The cooling manner of pipes is as follows: a series cooling system is closed so that the cooling steam circulates in the annular channel of each pipe; the cooling steam flows into the left end of a first pipe from the right end thereof, and then flows into a second pipe through a U-shaped pipe and flows into the right end of the second pipe from the left end thereof, and further enters a third pipe through the U-shaped pipe; the rest can be done in the same manner, and finally, the steam flows out of the last pipe. The utilization rate of the cooling steam is greatly improved. Compared with the existing single pipe cooled soot blower, the double pipe cooled soot blower is reliable in working; and the dosage of the cooling steam is reduced by about 25 times.

Description

Sleeve pipe cooled soot blower

Technical field

The utility model relates to a kind of production of carbon black heat exchanger heat exchanger tube and removes incrustation device, especially air preheater soot blower.

Background technology

Carbon black industry air preheater is a kind of vertical shell-and-tube heat exchanger; Carbon black smoke flows in heat exchanger tube from bottom to top, contains fine carbon black pellet in the carbon black smoke, hangs over easily on the heat exchanger tube inwall and forms incrustation; Influence heat exchange efficiency, thereby need be through soot blower cleaning incrustation commonly used.At present; Known air preheater soot blower; Be a kind of single tube cooled soot blower, a soot blower has many air jet pipes, on each air jet pipe, is provided with a plurality of nozzles vertically upward; Heat exchanger tube of each nozzle alignment, air jet pipe ground of an air jet pipe periodically purges heat exchanger tube with high steam and makes its non-scaling when blowing ash.Because air jet pipe is in nearly 1000 ℃ high temperature carbon black smoke, to work, not damaged in order to guarantee air jet pipe by oxide etch prematurely, the soot blower safeguard measure is to give every air jet pipe 24 hours uninterrupted logical steam.With figure this structure of explanation and cooling means: Fig. 1; Fig. 2 is known air preheater soot blower, and the part that M comprises among the figure is a single tube cooled soot blower, is heat exchanger above it; Wherein N is a heat exchanger tube, is high temperature carbon black smoke import base below it.Soot blower is by air jet pipe 21, nozzle 22, imbibition stay pipe 23, afterbody exhaust outlet 24, cooling steam supply main 25 and jet valve 26 compositions such as grade.Cooling steam gets into air jet pipe 21 from cooling steam supply main 25, discharges from several nozzles 22 and afterbody exhaust outlet 24 successively, has cooled off this root air jet pipe incessantly.The shortcoming of this single tube cooled soot blower is that steam consumption is too big.It is estimated a soot blower if blew ash once in per 48 hours, each blowing time is 10 minutes, blows ash in 48 hours to be about 0.02 ton with quantity of steam, but about 1 ton of 48 hours cooling steam consumptions of soot blower, approximately is to blow 50 times of grey consumption.Steam consumption is too big.

Summary of the invention

In order to overcome the big problem of single tube cooled soot blower steam consumption of present use, the utility model provides a kind of sleeve pipe cooled soot blower, and this soot blower can satisfy and blows grey requirement, can practice thrift a large amount of steam again.

The utility model solves the technical scheme that its technical problem adopted: sleeve pipe cooled soot blower, and by outer tube, interior pipe, nozzle; The U-shaped pipe, cylinder pipe nipple, curved washer, stuffing-box; Gland, airtight and watertight padding is formed, and it is characterized in that: outer tube is fixed on the cylinder pipe nipple, and interior pipe and outer concentric tube are installed and are formed the circular passage; The U-shaped pipe is communicated with the circular passage of adjacent tubes, and the lower end of nozzle is communicated with interior pipe, and stretch out from outer tube the upper end, and sealing is implemented at the outer tube two ends on interior pipe external cylindrical surface.Its characteristic also has: above-mentioned " lower end of nozzle is communicated with interior pipe; stretch out from outer tube the upper end " is to accomplish through a curved washer, manages on the cylindrical in promptly curved washer is welded in; Nozzle is welded on the curved washer, for its opening of outer tube of nozzle opening also welds with curved washer.Its characteristic also has: above-mentioned " the outer tube two ends implement to seal on interior pipe external cylindrical surface " is that stuffing-box and supporting airtight and watertight padding and the gland through being fixed on the outer tube two ends realized.In the sleeve pipe cooled soot blower; Interior pipe is to blow grey steam channel; The circular passage of outer tube and interior pipe is the cooling steam passage, and cooling steam flows into left end from the right-hand member of first pipe, gets into second pipe through the U-shaped pipe; Flow into right-hand member from the left end of second pipe, get into the 3rd pipe through the U-shaped pipe again ... Flow out from the last root pipe at last by that analogy.The utilization rate of cooling steam improves greatly.

The beneficial effect of the utility model is, than used single tube cooled soot blower, and reliable operation, the cooling steam consumption reduces greatly.It is estimated a soot blower if blew ash once in per 48 hours; Each blowing time is 10 minutes words; Blew ash in 48 hours and be about 0.02 ton with quantity of steam, with improve before identical, and only about 0.04 ton of 48 hours cooling steam consumptions of soot blower; Approximately be to blow 2 times of grey consumption, cooling steam amount ratio single tube cooled soot blower reduces about 25 times.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is a single tube cooled soot blower traditional structure sketch map.

Fig. 2 is Fig. 1 " A-A " cutaway view.

Fig. 3 is the utility model sleeve pipe cooled soot blower structural representation.

Fig. 4 is Fig. 3 " B-B " cutaway view.

Fig. 5 is Fig. 4 " I " partial enlarged drawing.

Fig. 6 is Fig. 4 " II " partial enlarged drawing.

Fig. 1,21. air jet pipes among Fig. 2,22. nozzles, 23. imbibition stay pipes, 24 afterbody exhaust outlets, 25. cooling steam supply mains, 26. jet valves.

Fig. 2, Fig. 3, Fig. 4, Fig. 5,1. outer tubes among Fig. 6,2. in pipe, 3.U shape pipe, 4. cylinder pipe nipple, 5. nozzle, 6. curved washer, 7. protective sleeve, 8. insulation material, 9. stuffing-box, 10. gland, 11. airtight and watertight paddings, 12. closure plates.

The specific embodiment

In Fig. 4 embodiment, the part that K comprises is the utility model sleeve pipe cooled soot blower, is high temperature carbon black smoke import base below it; It above it heat exchanger; Wherein H is a heat exchanger tube, and each nozzle 5 is aimed at a heat exchanger tube, has what heat exchanger tubes just to establish what nozzles.C is the cooling steam import among Fig. 3, and D is outlet, also can be opposite.On the pipe cylindrical, the thickness of curved washer 6 equaled the thickness of circular passage in nozzle 5 was welded on through curved washer 6 among Fig. 6.Outer tube is that the size of the mouth opened of nozzle should conveniently be implemented welding and the opening of outer tube and the welding of curved washer of nozzle and curved washer.Blow grey quality in order to improve, blowing ash is that a Guan Yigen pipe ground carries out.About also can being divided into effective closure plate 12 in every two sections, let pipe top nozzle quantity equates substantially in every section, each like this ash that blows, nozzle quantity is few, and steam pressure is high, can purge thorough.In order to protect nozzle, can add protective sleeve 7 at nozzle, between protective sleeve and nozzle, add insulation material 8.

Claims

1. sleeve pipe cooled soot blower, by outer tube, interior pipe, nozzle; The U-shaped pipe, cylinder pipe nipple, curved washer, stuffing-box; Gland, airtight and watertight padding is formed, and it is characterized in that: outer tube is fixed on the cylinder pipe nipple, and interior pipe and outer concentric tube are installed and are formed the circular passage; The U-shaped pipe is communicated with the circular passage of adjacent tubes, and the lower end of nozzle is communicated with interior pipe, and stretch out from outer tube the upper end, and sealing is implemented at the outer tube two ends on interior pipe external cylindrical surface.

2. sleeve pipe cooled soot blower according to claim 1; It is characterized in that: the lower end of nozzle is communicated with interior pipe; Stretch out from outer tube the upper end, is to realize through a curved washer, manages on the cylindrical in promptly curved washer is welded in; Nozzle is welded on the curved washer, for its opening of outer tube of nozzle opening also welds with curved washer.

3. sleeve pipe cooled soot blower according to claim 1 is characterized in that: sealing is implemented at the outer tube two ends on interior pipe external cylindrical surface, is that stuffing-box and supporting airtight and watertight padding and the gland through being fixed on the outer tube two ends realized.