CN215002855U

CN215002855U - Rotary kiln smoke tube structure for eliminating thermal stress

Info

Publication number: CN215002855U
Application number: CN202120650411.0U
Authority: CN
Inventors: 白太宽; 刘佳
Original assignee: Nanyang Sanxin Chengda Chemical Technology Co ltd
Current assignee: Nanyang Sanxin Chengda Chemical Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-03
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to a rotary kiln smoke tube structure for eliminating thermal stress, which belongs to the technical field of rotary kilns and particularly comprises a rotary kiln body, an outer smoke chamber arranged outside the rotary kiln body and an inner smoke chamber arranged inside the rotary kiln body, wherein a plurality of mounting holes are arranged on the circumference of the rotary kiln body, smoke guide tubes are arranged in the mounting holes, two ends of each smoke guide tube are respectively connected with the outer smoke chamber and the inner smoke chamber, a heat dissipation gap is arranged between the outer smoke chamber and the rotary kiln body, and a plurality of supporting plates are arranged in the heat dissipation gap, the supporting plates are arranged along the circumferential direction of the rotary kiln body, the top and the bottom of each supporting plate are respectively fixed on the outer smoke chamber and the rotary kiln body, the both sides in heat dissipation clearance still are provided with the blowing pipe, the blowing pipe be used for to the heat dissipation clearance blows cold wind, the utility model discloses simple structure, reasonable in design can lead the radiating efficiency of tobacco pipe, eliminates thermal stress.

Description

Rotary kiln smoke tube structure for eliminating thermal stress

Technical Field

The utility model relates to a rotary kiln tobacco pipe structure for eliminating thermal stress belongs to rotary kiln technical field.

Background

In the known external heating type rotary kiln heating device, an external smoke chamber is communicated with an internal smoke chamber in a rotary kiln body through a smoke guide pipe, and the smoke guide chamber is welded and fixed with the wall body of the rotary kiln body. However, in the actual use process, because the smoke guide pipe and the rotary kiln body are heated unevenly, the temperature of the smoke guide pipe is high, so that thermal stress occurs at the connecting part of the smoke guide pipe and the rotary kiln body, the situation of cracking or welding failure occurs, and the normal operation of the rotary kiln body is influenced.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that prior art exists, the utility model provides a simple structure, reasonable in design can improve the radiating efficiency of leading the tobacco pipe to eliminate the rotary kiln body tobacco pipe structure of the thermal stress between heat pipe and the kiln cover.

For realizing the above-mentioned purpose, the utility model discloses a technical scheme be a rotary kiln tobacco pipe structure for eliminating thermal stress, including the rotary kiln body and set up at the external outside smoke chamber of rotary kiln and set up at the internal portion's of rotary kiln interior smoke chamber, be provided with a plurality of mounting holes on the circumference of the rotary kiln body, install the smoke guide tube in the mounting hole, outer smoke chamber and interior smoke chamber are connected respectively to the both ends of smoke guide tube, still be provided with heat dissipation clearance between the external smoke chamber and the rotary kiln body, just be provided with a plurality of backup pads in the heat dissipation clearance, the backup pad is arranged along rotary kiln body circumference, and the top and the bottom of backup pad are fixed respectively on the external smoke chamber and the rotary kiln body, the both sides in heat dissipation tube clearance still are provided with the coolant blowing pipe, the coolant blowing be used for to the heat dissipation clearance blows the medium.

Preferably, the outer part of the smoke guide pipe is further provided with a plurality of radiating fins, and the radiating fins are located in the radiating gaps and are arranged along the circumferential direction of the smoke guide pipe.

Preferably, the heat dissipation fins are vertically fixed on the outer wall of the smoke guide pipe or the heat dissipation fins are transversely fixed on the outer wall of the smoke guide pipe.

Preferably, the inner wall of the smoke guide pipe is provided with a heat insulation layer and a wear-resistant working layer.

Preferably, the cooling medium is air, atomized water or a mixture of air and atomized water.

Preferably, set up heat preservation and wear-resisting working layer on the interior smoke chamber inner wall, outer smoke chamber is inside to set up heat preservation and wear-resisting working layer equally.

Compared with the prior art, the utility model discloses following technological effect has: the utility model discloses simple structure, reasonable in design, the adoption leaves the heat dissipation clearance between the outer smoke chamber and the rotary kiln body, and arrange a plurality of radiating fin and both sides on leading the tobacco pipe and arrange the coolant blowing pipe, make the heat of gathering on leading the tobacco pipe in time distribute away, and then avoided leading the tobacco pipe and with the rotary kiln body between the difference in temperature too big, thermal stress appears at the position of being connected of leading the tobacco pipe and the rotary kiln body, lead to the condition that cracks or desolder, thereby guarantee the rotary kiln body steady operation.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of a third embodiment of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1, a rotary kiln smoke tube structure for eliminating thermal stress includes a rotary kiln body 1, an outer smoke chamber 2 disposed outside the rotary kiln body, and an inner smoke chamber 3 disposed inside the rotary kiln body, a plurality of mounting holes 4 are disposed on the circumference of the rotary kiln body, a smoke guide tube 5 is installed in each mounting hole 4, two ends of the smoke guide tube 5 are respectively connected to the outer smoke chamber 2 and the inner smoke chamber 3, a heat dissipation gap 6 is further disposed between the outer smoke chamber 2 and the rotary kiln body 1, a plurality of support plates 7 are disposed in each heat dissipation gap 6, the support plates 7 are circumferentially disposed along the rotary kiln body 1, the top and the bottom of each support plate 7 are respectively fixed to the outer smoke chamber 2 and the rotary kiln body 1, cooling medium blowing tubes are further disposed on two sides of the heat dissipation gap, and the cooling medium blowing tubes are used for blowing medium to the heat dissipation gap.

Leave sufficient heat dissipation clearance between the outer smoke chamber and the rotary kiln body in this embodiment, the backup pad is used for supporting external smoke chamber fixedly, guarantees the structural stability of outer smoke chamber. The smoke guide pipe is cooled through the cooling gap and is matched with the cooling medium blowing pipe to blow, so that heat accumulated by the smoke guide pipe is rapidly dispersed, and the situation that cracks or desolders occur due to the fact that the temperature difference between the smoke guide pipe and the rotary kiln body is too large and the thermal stress occurs at the connecting part of the smoke guide pipe and the rotary kiln body is avoided.

Wherein, be provided with thermal insulation layer 8 on the inner wall of smoke guide pipe 5, thermal insulation layer can reduce thermal transmission, further avoids smoke guide pipe to appear the too high condition of temperature.

Example two

As shown in fig. 2, the top of the smoke guiding pipe 5 is further provided with a plurality of heat dissipating fins 9, the heat dissipating fins 9 are located in the heat dissipating gap and arranged along the circumferential direction of the smoke guiding pipe, and the heat dissipating fins 9 are vertically fixed on the outer wall of the smoke guiding pipe 5. The radiating area of the smoke guide pipe can be further improved by arranging the radiating fins, and the radiating efficiency is improved. The rest is the same as the first embodiment.

EXAMPLE III

As shown in fig. 3 and 4, the top of the smoke guiding pipe 5 is further provided with a plurality of heat dissipating fins 9, the heat dissipating fins 9 are located in the heat dissipating gaps and arranged along the circumferential direction of the smoke guiding pipe, and the heat dissipating fins 9 are transversely fixed on the outer wall of the smoke guiding pipe 5. The rest is the same as the first embodiment. In the embodiment, the radiating fins are transversely arranged, so that the arrangement is more flexible and the use is convenient.

The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a rotary kiln tobacco pipe structure for eliminating thermal stress, includes the rotary kiln body and sets up at the external outer smoke chamber of rotary kiln body and set up at the internal portion's of rotary kiln interior smoke chamber, its characterized in that: the rotary kiln is characterized in that a plurality of mounting holes are formed in the circumference of the rotary kiln body, smoke guide pipes are mounted in the mounting holes, two ends of each smoke guide pipe are connected with an outer smoke chamber and an inner smoke chamber respectively, a heat dissipation gap is further formed between each outer smoke chamber and the rotary kiln body, a plurality of supporting plates are arranged in the heat dissipation gap, the supporting plates are arranged along the circumferential direction of the rotary kiln body, the top and the bottom of each supporting plate are fixed on the outer smoke chamber and the rotary kiln body respectively, cooling medium blowing pipes are further arranged on two sides of the heat dissipation gap, and the cooling medium blowing pipes are used for blowing cooling media to the heat dissipation gaps.

2. A rotary kiln flue tube structure for removing thermal stress according to claim 1, wherein: the outside of smoke guide pipe still is provided with a plurality of radiating fins, radiating fins is located the heat dissipation clearance, and arranges along smoke guide pipe circumference.

3. A rotary kiln flue tube structure for removing thermal stress according to claim 2, wherein: the radiating fins are vertically fixed on the outer wall of the smoke guide pipe or transversely fixed on the outer wall of the smoke guide pipe.

4. A rotary kiln flue tube structure for the removal of thermal stresses as claimed in any one of claims 1 to 3, wherein: the inner wall of the smoke guide pipe is provided with a heat insulation layer and a wear-resistant working layer.

5. A rotary kiln flue tube structure for removing thermal stress according to claim 1, wherein: the cooling medium is air, atomized water or a mixture of air and atomized water.

6. A rotary kiln flue tube structure for removing thermal stress according to claim 1, wherein: the inner wall of the inner smoke chamber is provided with a heat preservation layer and a wear-resistant working layer, and the inner part of the outer smoke chamber is also provided with the heat preservation layer and the wear-resistant working layer.