CN217844738U - Fire tube furnace fire tube protective radiant tube and fire tube structure - Google Patents
Fire tube furnace fire tube protective radiant tube and fire tube structure Download PDFInfo
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- CN217844738U CN217844738U CN202221024551.8U CN202221024551U CN217844738U CN 217844738 U CN217844738 U CN 217844738U CN 202221024551 U CN202221024551 U CN 202221024551U CN 217844738 U CN217844738 U CN 217844738U
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Abstract
The utility model discloses a fire tube furnace fire tube protection radiant tube and fire tube structure, protection radiant tube include barrel and flange, and flange fixed mounting offers the through-hole that is used for installing the combustor in the middle of the flange in barrel one end, has seted up the waist shape hole more than one on the barrel. The utility model discloses mainly be a simple structure, low cost, easy dismounting's fire section of thick bamboo protection radiant tube, it has prolonged the life of a fire section of thick bamboo, the heat exchange efficiency of not too much reduction fire section of thick bamboo stove again.
Description
Technical Field
The utility model discloses a radiant tube, especially a fire tube stove fire tube protective radiation pipe and fire tube structure belongs to and is used for fire tube protective radiation pipe technical field on the fire tube formula heating furnace.
Background
The fire-tube heating furnace is a heating furnace with a fire tube arranged in a metal cylinder shell for transferring heat, so the heating furnace is called as a fire-tube heating furnace, and the fire-tube heating furnace is a heating furnace widely used in oil fields. The fire tube of the fire tube type heating furnace in the prior art is in direct contact with flame, so the fire tube arranged in a flame high-temperature area of a burner can be burnt out frequently, the fire tube needs to be replaced frequently, meanwhile, a smoke tube and the fire tube in the existing heating furnace are welded together into a whole, and when the fire tube is replaced, the smoke tube needs to be replaced together. The process of fire tube replacement usually needs the operation processes of cutting the end socket of the heating furnace, hoisting the chimney and the like, which causes high replacement and maintenance cost and the like.
Disclosure of Invention
The shortcoming of the easy damage of a fire section of thick bamboo formula heating furnace fire section of thick bamboo among the prior art to the aforesaid mention, the utility model provides a fire section of thick bamboo stove fire section of thick bamboo protection radiant tube and fire section of thick bamboo structure, its adoption is seted up the radiant tube in waist shape hole as the protection tube, has prolonged the life of a fire section of thick bamboo, the not too much heat exchange efficiency who reduces a fire section of thick bamboo stove again.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a fire tube furnace fire tube protection radiant tube, protection radiant tube includes barrel and flange, and flange fixed mounting is in barrel one end, offers the through-hole that is used for installing the combustor in the middle of the flange, offers more than one waist shape hole on the barrel.
The utility model provides an adopt as above-mentioned fire tube structure of fire tube stove fire tube protection radiant tube, fire tube structure includes as above-mentioned radiant tube, heating furnace fire tube and combustor, and heating furnace fire tube end is fixed and is provided with fire tube end plate, and flange and fire tube end plate fixed mounting are in the same place, in the through-hole of combustor fixed mounting on the flange.
The utility model provides a technical scheme that its technical problem adopted further still includes:
the wall thickness of the cylinder body is 3mm-5mm, preferably 4mm.
The shape of the flange is larger than or matched with the cross section of the cylinder body, and the thickness of the flange is more than 8mm, preferably 10 mm.
The waist-shaped holes are more than one, the waist-shaped holes are uniformly distributed on the cylinder along the circumference, and the opening direction of the waist-shaped holes is parallel to the axis direction of the central shaft of the cylinder.
The edge of the waist-shaped hole is 250mm away from the flange.
The waist-shaped hole is 1/4 to 1/2 of the length of the cylinder.
The distance between the outer side wall of the radiant tube and the inner side wall of the heating furnace fire tube is 40-50 mm.
The heating furnace fire tube is characterized in that refractory bricks are fixedly arranged on the inner side wall of the heating furnace fire tube, one end of the flange is arranged on the corresponding radiant tube, refractory bricks are completely filled between the heating furnace fire tube and the corresponding cylinder, the whole filling area is arranged between the end of the waist-shaped hole on the corresponding cylinder and the flange, refractory bricks are also filled in the position of the corresponding waist-shaped hole in the heating furnace fire tube, the heating furnace fire tube is a partial filling area, and the filling thickness of the refractory bricks in the partial filling area is about 1/2 of the distance between the outer side wall of the radiant tube and the inner side wall of the heating furnace fire tube.
The rear 1/3 of the rear end of the cylinder body corresponding to the radiant tube is a high-temperature area, and refractory bricks are not arranged in the position, corresponding to the high-temperature area, in the heating furnace fire cylinder.
The utility model has the advantages that: the utility model discloses mainly be a simple structure, low cost, easy dismounting's fire section of thick bamboo protection radiant tube, it has prolonged the life of a fire section of thick bamboo, the heat exchange efficiency of not too much reduction fire section of thick bamboo stove again.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
Fig. 1 is a schematic view of the structure of the protection radiant tube of the present invention.
Fig. 2 is a schematic view of the fire tube structure of the present invention.
In the figure, 1-flange, 2-waist-shaped hole, 3-cylinder, 4-through hole, 5-heating furnace fire cylinder, 6-burner, 7-fire cylinder end plate, 8-refractory brick, 9-gap and 10-high temperature zone.
Detailed Description
The embodiment is a preferred embodiment of the present invention, and other principles and basic structures are the same as or similar to those of the embodiment, and are within the protection scope of the present invention.
Please refer to fig. 1, the present invention mainly protects a fire tube protection radiant tube of a fire tube furnace, the protection radiant tube mainly comprises a tube body 3 and a flange 1, the flange 1 is fixedly installed at one end of the tube body 3, and the tube body 3 is provided with more than one waist-shaped hole 2.
In the embodiment, the outer diameter of the cylinder 3 is specifically set according to the inner diameter of the fire cylinder of the heating furnace, the wall thickness is 3mm-5mm, preferably 4mm, and the length of the cylinder 3 is determined according to the lengths of flames of different burners and is not fixed to be one size.
In this embodiment, flange 1 shape is identical with the cross sectional shape of barrel 3 (be used for installing it through the bolt from barrel 3 inside) or is greater than the cross sectional shape of barrel 3 (be used for installing it through the bolt from barrel 3 outside), has guaranteed joint strength, and in this embodiment, flange thickness is more than 8mm, preferably 10 millimeters, and if too thin, can influence joint strength, and too thick will increase the utility model discloses a dead weight. In this embodiment, the flange 1 is fixed to the cylinder 3 by welding. The middle of the flange 1 is provided with a through hole 4, and the size and the shape of the through hole 4 are matched with the shape of a burner which is installed in a matched mode, so that the burner is convenient to install.
In this embodiment, the waist-shaped holes 2 are more than one, the waist-shaped holes 2 are uniformly distributed on the cylinder 3 along the circumference, the opening direction of the waist-shaped holes 2 is parallel to the axis direction of the central shaft of the cylinder 3, and during specific implementation, the opening direction of the waist-shaped holes 2 can also form a certain included angle with the axis direction of the central shaft of the cylinder 3. In this embodiment, the waist-shaped hole 2 is formed on the wall of the cylinder 3 at a position 200mm to 300mm away from the connecting flange, that is, the edge of the waist-shaped hole 2 is 200mm to 300mm away from the flange, preferably 250mm. The length of the kidney-shaped hole 2 is in the range of 2/5 to 3/5 of the flame length of the burner, the design can ensure that about 1/4 of the mixture of the fuel and the air passes through the kidney-shaped hole 2, the length of the cylinder 3 (the length of the radiant tube is the same as that of the radiant tube) is 1.3 to 1.5 times of the flame length of the burner, and the length of the kidney-shaped hole 2 can be understood to be 1/4 to 1/2 of the length of the cylinder 3.
The utility model discloses protect simultaneously an adopt above-mentioned fire tube furnace fire tube protection radiant tube's fire tube structure, this structure includes as above-mentioned radiant tube, heating furnace fire tube 5 and combustor 6, and 5 fixed fire tube end seal boards 7 that are provided with of heating furnace fire tube, flange 1 on the radiant tube are in the same place with fire tube seal board 7 fixed mounting to realize the installation of radiant tube, in the through-hole 4 on the flange 1 of combustor 6 fixed mounting on the radiant tube. In this embodiment, the radiant tube is inserted into the heating furnace fire tube 5 from the outside. The burner 6 is arranged on the connecting flange 1, the design can ensure that about 1/4 of mixture of fuel and air enters a gap 9 between the radiant tube cylinder 3 and the heating furnace fire cylinder 5 through the waist-shaped hole 2 and is combusted in the gap to directly heat the heating furnace fire cylinder 5, and the temperature on the surface of the heating furnace fire cylinder 5 is reduced because a small part of combustion directly heats the heating furnace fire cylinder 5; simultaneously, remaining 3/4 mist mainly burns in barrel 3 inside, and the high temperature district 10 of flame at first heats the radiation section of thick bamboo, and indirect heating fire section of thick bamboo 5 through the heat radiation effect of radiation section of thick bamboo has cut apart flame through such design, has reduced flame concentration degree, has reduced the temperature of burning promptly, has prevented that high temperature district flame from directly having played the effect of protection fire section of thick bamboo to the injury of fire section of thick bamboo.
In the embodiment, the distance between the outer side wall of the radiant tube and the inner side wall of the heating furnace fire tube 5 is 40-50 mm, the radiation effect is strong, and meanwhile, the space in the gap 9 is ensured to be enough for supporting the part, so that the fuel can be partially combusted and the combustion products can circulate, and safety problems such as deflagration and the like are avoided; the length of the radiant tube is 1.3-1.5 times of the length of the flame of the burner 6, the design can ensure that the high-temperature area of the flame is in the radiant tube, the high-temperature smoke has a process of flowing out of the radiant tube with a certain length, the sufficient heat exchange and cooling are realized in the process, and the temperature of the high-temperature smoke after flowing out of the outlet of the radiant tube is ensured not to cause irreversible damage to the heating furnace fire tube.
In this embodiment, a refractory brick 8 is fixedly arranged on the inner side wall of the heating furnace fire tube 5, which corresponds to one end of the mounting flange 1 on the radiant tube, the refractory brick 8 is completely filled between the heating furnace fire tube 5 and the cylinder 3, which can be defined as a complete filling area, the complete filling area is arranged corresponding to the area between the end of the waist-shaped hole 2 on the cylinder 3 and the flange 1, the refractory brick 8 is also filled in the position corresponding to the waist-shaped hole 2 in the heating furnace fire tube 5, but is not filled, which can be defined as a partial filling area, the filling thickness of the refractory brick in the partial filling area is about 1/2 of the distance between the outer side wall of the radiant tube and the inner side wall of the heating furnace fire tube 5, namely, a gap 9 is arranged between the outer side wall of the radiant tube and the refractory brick 8, and the length of the partial filling area is longer than the length of the waist-shaped hole 2.
In this embodiment, the rear 1/3 of the rear end of the barrel 3 corresponding to the radiant tube (the utility model discloses in define 1 end of the mounting flange of the barrel 3 as the head end, then the other end is the tail end) is the high temperature zone 10, and the position corresponding to the high temperature zone 10 in the heating furnace fire tube 5 is not provided with the firebrick 8.
The utility model discloses mainly be a simple structure, low cost, easy dismounting's fire section of thick bamboo protection radiant tube, it has prolonged the life of a fire section of thick bamboo, the heat exchange efficiency of not too much reduction fire section of thick bamboo stove again.
Claims (12)
1. A fire tube protection radiant tube of a fire tube furnace is characterized in that: the protective radiant tube comprises a tube body (3) and a flange (1), wherein the flange (1) is fixedly installed at one end of the tube body (3), a through hole (4) used for installing a combustor is formed in the middle of the flange (1), and more than one waist-shaped hole (2) is formed in the tube body (3).
2. The fire tube furnace fire tube protective radiant tube of claim 1, which is characterized in that: the wall thickness of the cylinder body (3) is 3mm-5mm.
3. The fire tube protection radiant tube of a fire tube furnace as claimed in claim 2, characterized in that: the wall thickness of the cylinder body (3) is 4mm.
4. The fire tube furnace fire tube protective radiant tube of claim 1, characterized in that: the shape of the flange (1) is larger than the cross section shape of the cylinder body (3) or is matched with the cross section shape of the cylinder body (3), and the thickness of the flange is more than 8 mm.
5. The fire tube furnace fire tube protective radiant tube of claim 4, characterized in that: the thickness of the flange is 10 mm.
6. The fire tube furnace fire tube protective radiant tube of claim 1, characterized in that: the waist-shaped holes (2) are more than one, the waist-shaped holes (2) are uniformly distributed on the cylinder body (3) along the circumference, and the opening direction of the waist-shaped holes (2) is parallel to the axis direction of the central shaft of the cylinder body (3).
7. The fire tube furnace fire tube protective radiant tube of claim 1, characterized in that: the edge of the waist-shaped hole (2) is 250mm away from the flange.
8. The fire tube furnace fire tube protective radiant tube of claim 1, characterized in that: the waist-shaped hole (2) is 1/4 to 1/2 of the length of the cylinder (3).
9. A fire tube structure for protecting a radiant tube by using the fire tube of the fire tube furnace as claimed in any one of claims 1 to 8, characterized in that: the fire tube structure comprises the radiant tube, the heating furnace fire tube (5) and the burner (6) as claimed in any one of claims 1 to 8, a fire tube end sealing plate (7) is fixedly arranged at the end of the heating furnace fire tube (5), the flange (1) and the fire tube end sealing plate (7) are fixedly arranged together, and the burner (6) is fixedly arranged in the through hole (4) on the flange (1).
10. A fire tube structure as defined in claim 9, wherein: the distance between the outer side wall of the radiant tube and the inner side wall of the heating furnace fire tube (5) is 40mm-50mm.
11. A fire tube structure as defined in claim 9, wherein: heating furnace firebox (5) inside wall fixed be provided with resistant firebrick (8), corresponding to mounting flange (1) one end on the radiant tube, it has resistant firebrick (8) to all to fill between heating furnace firebox (5) and barrel (3), for whole filling area, whole filling area is corresponding to barrel (3) and goes up waist-shaped hole (2) end and to flange (1) between regional setting, it has resistant firebrick (8) to also fill corresponding to waist-shaped hole (2) position department in heating furnace firebox (5), for partial filling area, the fill thickness of partial filling area resistant firebrick is about 1/2 of the distance between radiant tube outside lateral wall to heating furnace firebox (5) inside wall.
12. A fire tube structure as defined in claim 9, wherein: the rear 1/3 of the tail end of the cylinder body (3) corresponding to the radiant tube is a high-temperature area (10), and a refractory brick is not arranged in the position, corresponding to the high-temperature area (10), in the heating furnace fire cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024551.8U CN217844738U (en) | 2022-04-29 | 2022-04-29 | Fire tube furnace fire tube protective radiant tube and fire tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024551.8U CN217844738U (en) | 2022-04-29 | 2022-04-29 | Fire tube furnace fire tube protective radiant tube and fire tube structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217844738U true CN217844738U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221024551.8U Active CN217844738U (en) | 2022-04-29 | 2022-04-29 | Fire tube furnace fire tube protective radiant tube and fire tube structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217844738U (en) |
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2022
- 2022-04-29 CN CN202221024551.8U patent/CN217844738U/en active Active
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