CN219829115U - Gas heat-conducting oil boiler with combination of coil pipe and coiled pipe - Google Patents
Gas heat-conducting oil boiler with combination of coil pipe and coiled pipe Download PDFInfo
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- CN219829115U CN219829115U CN202321330999.7U CN202321330999U CN219829115U CN 219829115 U CN219829115 U CN 219829115U CN 202321330999 U CN202321330999 U CN 202321330999U CN 219829115 U CN219829115 U CN 219829115U
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- 239000007789 gas Substances 0.000 abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 239000000779 smoke Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a gas heat-conducting oil boiler with a combination of a coil pipe and a coiled pipe. The boiler comprises a boiler body, wherein a plurality of spiral coils, a first collecting box, a second collecting box, a coiled pipe and a third collecting box are arranged in the boiler body, one end of each spiral coil is connected with the first collecting box, and the other end of each spiral coil is connected with the second collecting box; one end of the coiled pipe is connected with the third header, and the other end is connected with the first header. The problem of short circuit of flue gas between return strokes of the traditional coil type boiler is solved, the boiler efficiency is improved, and the cost is saved; the countercurrent heat exchange is easy to realize, and the efficiency is improved; the coil pipe with a small diameter is used for replacing a coil pipe with a large diameter, the wall thickness of the coil pipe with a small diameter can be smaller, and the steel consumption is reduced by about 30-40% under the condition of the same heating area; the smoke resistance is reduced because the smoke flow of the coiled pipe is short; any part of the boiler can be conveniently maintained, and the reliability is improved; and the transportation size is reduced, so that the boiler can be developed to a larger capacity boiler.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to a gas heat-conducting oil boiler with a coil pipe and a coiled pipe combined.
Background
The fuel oil and gas boiler is greatly developed due to the requirements of environmental protection, energy conservation, emission reduction, carbon neutralization and the like. The heat conducting oil boiler is used as one branch of the boiler, and is widely applied to chemical fiber, printing and dyeing industry and other industries due to the characteristics of low pressure, high temperature, stable heat supply and the like. The heat conduction oil is an organic medium and is easy to carbonize at high temperature, so that the temperature of the heat conduction oil in the boiler is controlled not to exceed the maximum allowable temperature of the heat conduction oil, and the heat conduction oil boiler is a key of the design of the heat conduction oil boiler.
The heat conducting oil is an organic medium, and leakage is easy to catch fire, so that the boiler structure can be expanded freely, the thermal stress level is low, and leakage is prevented. The working temperature of the heat conduction oil is high (typical temperature, oil return is 285 ℃ and oil outlet is 325 ℃), and according to the principle of heat transfer, the temperature of the cold source is high, so that the exhaust gas temperature of the boiler is high, the heat energy of exhaust gas is generally recovered by an air preheater, but the temperature of the air is high after the air is heated by the air preheater, the temperature is about 250-280 ℃, the combustion temperature is increased, and further the NOx emission is increased. The exhaust emission of NOx is generally reduced by adopting a flue gas recirculation technology, and the difficulty of reducing NOx is increased due to the increase of the temperature of hot air.
The gas heat-conducting oil boiler generally adopts a multi-head spiral coil pipe type heating surface, and the pipes are closely arranged to form a cylinder.
According to the different boiler power, two or three pipe rings are adopted, and the pipe rings are arranged in concentric circles.
The flue gas flow has two-return and three-return branches.
The second return stroke means that the gas fuel burns in the first pipe circle and flows to the terminal end of the first pipe circle, the flue gas turns to enter the annular space between the first pipe circle and the third pipe circle and flows to the terminal end, and the heat exchange process is completed.
The three return strokes are that the gas fuel burns in the first pipe circle and flows to the terminal end of the first pipe circle, the flue gas turns to enter the annular space between the first pipe circle and the third pipe circle, flows to the terminal end, turns to enter the annular channel between the third pipe circle and the shell, flows to the terminal end of the third pipe circle, and the heat exchange process is completed.
As shown in fig. 3 and 4, there is always a gap between the spiral coils due to the influence of manufacturing errors and assembly processes, and the flue gas is short-circuited between the first return stroke and the second return stroke and between the second return stroke and the third return stroke, so that the heat exchange efficiency is reduced and materials are wasted.
Spiral coils generally use large diameter tubes (typical gauge phi 108 x 4.5, phi 133 x 5) as the heating surface.
The three pipe rings are mutually nested, and if one pipe fails, the pipe cannot be maintained and scrapped, so that great loss is caused.
Disclosure of Invention
The utility model provides a gas heat-conducting oil boiler with a coil pipe and a coiled pipe combined, aiming at the defects in the prior art.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
the gas heat-conducting oil boiler with the combination of the coil pipes and the coiled pipes comprises a boiler body, wherein a plurality of spiral coil pipes, a first collecting box, a second collecting box, the coiled pipes and a third collecting box are arranged in the boiler body, one end of each multi-head spiral coil pipe is connected with the first collecting box, and the other end of each multi-head spiral coil pipe is connected with the second collecting box;
one end of the coiled pipe is connected with the third header, and the other end of the coiled pipe is connected with the first header.
In the technical scheme, the hearth in the boiler body is formed into a cylindrical shape or a square box shape by the multi-head spiral coil pipe.
In the above technical scheme, the first header is a split header or an outlet header.
In the above technical scheme, the first header comprises a split header and an outlet collecting header, and the split header and the outlet collecting header are connected through a connecting pipe.
In the above technical scheme, the second header is a collecting header.
In the above technical scheme, the third header is an inlet split header.
The beneficial effects of the utility model are as follows:
1. the problem of short circuit of flue gas between return strokes of the traditional coil type boiler is solved, the boiler efficiency is improved, and the cost is saved;
2. the countercurrent heat exchange is easy to realize, and the efficiency is improved;
3. the coil pipe with a small diameter is used for replacing a coil pipe with a large diameter, the wall thickness of the coil pipe with a small diameter can be smaller, and the steel consumption is reduced by about 30-40% under the condition of the same heating area;
4. the smoke resistance is reduced because the smoke flow of the coiled pipe is short;
5. any part of the boiler can be conveniently maintained, and the reliability is improved;
6. and the transportation size is reduced, so that the boiler can be developed to a larger capacity boiler.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
FIG. 2 is a schematic diagram of another embodiment of the present utility model.
Fig. 3 is a schematic diagram of a flue gas short circuit in the prior art.
Fig. 4 is a schematic diagram of a flue gas short circuit in the prior art.
Detailed Description
The utility model is described in further detail below with reference to the following detailed description and the accompanying drawings:
referring to fig. 1 and 2, a gas heat-conducting oil boiler with a combination of coil pipes and serpentine pipes comprises a boiler body 1, wherein a multi-head spiral coil pipe 2, a first header, a second header, a serpentine pipe 3 and a third header are arranged in the boiler body 1, in this embodiment, the multi-head spiral coil pipe 2 is cylindrical or square box-shaped, so that a cylindrical or square box-shaped hearth is correspondingly formed, as shown in fig. 1, and as shown in fig. 2, the multi-head spiral coil pipe 2 is cylindrical.
The first header may take various forms such as a split header 41 or an outlet header 42 or a split header 41 and an outlet header 42 contained therein, and when it is in the form of a split header 41 and an outlet header 42 contained therein, the split header 41 and the outlet header 42 are connected by a connecting pipe 7 therebetween; when the two are combined into one header (e.g. just the split header 41 or just the outlet header 42), the connection pipe 7 can be eliminated.
In this embodiment, the second header is a collecting header 5, and the third header is an inlet split header 6.
One end of the multi-head spiral coil pipe 2 is connected with the split header 41, and the other end is connected with the collecting header 5;
one end of the serpentine tube 3 is connected to the inlet split header 6, and the other end is connected to the outlet collection header 42.
After the design, the problem of short circuit of flue gas between return strokes of the traditional coil type boiler can be avoided, the boiler efficiency is improved, and the cost is saved; the countercurrent heat exchange is easy to realize, and the efficiency is improved; the coil pipe with a small diameter is used for replacing a coil pipe with a large diameter, the wall thickness of the coil pipe with a small diameter can be smaller, and the steel consumption is reduced by about 30-40% under the condition of the same heating area; the smoke resistance is reduced because the smoke flow of the coiled pipe is short; any part of the boiler can be conveniently maintained, and the reliability is improved; and the transportation size is reduced, so that the boiler can be developed to a larger capacity boiler.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. The utility model provides a gas conduction oil boiler of coil pipe and coiled pipe combination, includes boiler body, its characterized in that: the boiler body is internally provided with a multi-head spiral coil, a first header, a second header, a coiled pipe and a third header, one end of the multi-head spiral coil is connected with the first header, and the other end of the multi-head spiral coil is connected with the second header;
one end of the coiled pipe is connected with the third header, and the other end of the coiled pipe is connected with the first header.
2. A gas and heat transfer oil boiler in combination with a coiled tube as set forth in claim 1 wherein: the hearth in the boiler body is formed into a cylindrical shape or a square box shape by the multi-head spiral coil pipe.
3. A gas and heat transfer oil boiler in combination with a coiled tube as set forth in claim 1 wherein: the first header is a split header or an outlet header.
4. A gas and heat transfer oil boiler in combination with a coiled tube as set forth in claim 1 wherein: the first header comprises a shunt header and an outlet collecting header, and the shunt header is connected with the outlet collecting header through a connecting pipe.
5. A gas and heat transfer oil boiler in combination with a coiled tube as set forth in claim 1 wherein: the second header is a collecting header.
6. A gas and heat transfer oil boiler in combination with a coiled tube as set forth in claim 1 wherein: the third header is an inlet split header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321330999.7U CN219829115U (en) | 2023-05-30 | 2023-05-30 | Gas heat-conducting oil boiler with combination of coil pipe and coiled pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321330999.7U CN219829115U (en) | 2023-05-30 | 2023-05-30 | Gas heat-conducting oil boiler with combination of coil pipe and coiled pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219829115U true CN219829115U (en) | 2023-10-13 |
Family
ID=88285726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321330999.7U Active CN219829115U (en) | 2023-05-30 | 2023-05-30 | Gas heat-conducting oil boiler with combination of coil pipe and coiled pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219829115U (en) |
-
2023
- 2023-05-30 CN CN202321330999.7U patent/CN219829115U/en active Active
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