CN206522769U - A kind of snakelike gas fired radiant tubes - Google Patents
A kind of snakelike gas fired radiant tubes Download PDFInfo
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- CN206522769U CN206522769U CN201621384573.XU CN201621384573U CN206522769U CN 206522769 U CN206522769 U CN 206522769U CN 201621384573 U CN201621384573 U CN 201621384573U CN 206522769 U CN206522769 U CN 206522769U
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- radiant tube
- radiant
- main body
- bend pipes
- tube
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Abstract
For the deficiencies in the prior art, the utility model provides a kind of snakelike gas fired radiant tubes.The snakelike gas fired radiant tubes includes：Radiant tube main body, radiant tube are imported and exported and radiant tube fixed charge method end plate, wherein, the radiant tube main body is fixedly connected and constituted from beginning to end successively by many bend pipes with least one straight tube, and the bend pipe includes 180 ° of bend pipes and 90 ° of bend pipes；The two ends of the serpentine configuration are separately installed with the radiant tube and imported and exported, and the radiant tube is imported and exported and is fixedly connected with the radiant tube fixed charge method end plate.Because the main part of radiant tube uses serpentine configuration, reduce as far as possible or reasonable employment straight length, thus, flue gas are big in radiant tube internal disturbance, augmentation of heat transfer, improve surface loading；With reference to the load of burner, air inducing pressure is rationally controlled, it is to avoid with the presence of not compensability dead band inside radiant tube, radiant tube surface temperature difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated material heated evenly.
Description
Technical field
The utility model belongs to field of machining, and in particular to a kind of gas fired radiant tubes.
Background technology
The characteristics of radiant tube type burner has muffle heating, because the atmosphere on burner hearth energy does not result in influence, radiates
Heating, improves the uniformity of heating, if radiant tube coordinates the regenerative radiant tube burner pair that can also constitute with heat-accumulating burner
Control CO2、NOxDischarge and energy-conservation with other pollutants all have obvious advantage.At present, the radiant tube mainly used has U-shaped
With W type radiant tubes, it is widely used in the fields such as chemical industry, metallurgy, building materials.But common disadvantage is that the surface loading of radiant tube is relatively low,
There is the space further improved in terms of efficient energy-saving.Patent No. CN201280013517 discloses a kind of gas fired radiant tubes,
By connection straight tube and at least one bend pipe, the burning gases of burner are blown into from a side of straight tube, radiant tube external diameter is 150-
210mm, wall thickness are 3-8mm cast body；But, because the main part total length of radiant tube is based on straight length, from burning
The flame sprayed in device enters after radiant tube, and flue gas gradually forms steady-flow, and boundary layer thickeies, and fume high-temperature concentrates on radiation
The axial centre of pipe, thus flue gas heat can not in time sufficiently be delivered to radiation tube wall on, so as to cause radiant tube to heat up
Speed is slow, and surface loading is low.Therefore, a kind of uniform radiant tube of radiations heat energy how is designed, as the current difficulty for being badly in need of solving
Topic.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of snakelike gas fired radiant tubes.This practicality is new
The snakelike gas fired radiant tubes that type is provided, the main part of radiant tube uses serpentine configuration, reduces as far as possible or reasonable employment straight length,
Thus, flue gas is big in radiant tube internal disturbance, augmentation of heat transfer, improves surface loading；Strong cutout campaign, to the carbon distribution of inwall
There are certain scouring effect, therefore wider range on Fuel Selection；With reference to the load of burner, air inducing pressure is rationally controlled,
Avoid with the presence of not compensability dead band inside radiant tube, radiant tube surface temperature difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated
Material is heated evenly.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
The utility model provides a kind of snakelike gas fired radiant tubes, it is characterised in that including：Radiant tube main body, radiant tube
Import and export and radiant tube fixed charge method end plate, wherein, head and the tail are solid successively by many bend pipes and at least one straight tube for the radiant tube main body
Surely connect and compose, the bend pipe includes 180 ° of bend pipes and 90 ° of bend pipes, so that snakelike knot of the radiant tube main body for closing
Forced convective heat transfer of flue in structure, the disturbance for improving the flowing of radiant tube inside smoke, reinforcing radiant tube；The serpentine configuration
Two ends are separately installed with the radiant tube and imported and exported, and the radiant tube is imported and exported and is fixedly connected with the radiant tube fixed charge method end plate.
Inventor has found that the snakelike gas fired radiant tubes that the utility model is provided, the main part of radiant tube uses snakelike knot
Structure, is reduced as far as possible or reasonable employment straight length, thus, flue gas are big in radiant tube internal disturbance, augmentation of heat transfer, is improved surface and is born
Lotus；Strong cutout campaign, has certain scouring effect, therefore wider range on Fuel Selection to the carbon distribution of inwall；With reference to
The load of burner, rationally controls air inducing pressure, it is to avoid with the presence of not compensability dead band inside radiant tube, radiates pipe surface temperature
Difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated material heated evenly.
Further, in many bend pipes, the quantity of 180 ° of bend pipes is more than the quantity of 90 ° of bend pipes.
Further, the quantity of 180 ° of bend pipes of the radiant tube main body is at least five, and the quantity of 90 ° of bend pipes is four
Root, the straight tube of the radiant tube main body is 1.
Further, the quantity of 180 ° of bend pipes is 9.
Further, the radiant tube import and export are the bullet shell mould that upper end is small, lower end is big, what the radiant tube was imported and exported
Lower end is provided with flange.
Further, the material of the radiant tube main body is heat resistant centrifugal cast steel.
Further, it is fixedly connected between the bend pipe and straight tube of the radiant tube main body by way of welding；The spoke
Pipe main body is penetrated to be fixedly connected by way of welding with radiant tube import and export；The radiant tube is imported and exported and the radiant tube
Fixed charge method end plate is fixedly connected by way of welding.
What the utility model was produced has the beneficial effect that：
For the deficiencies in the prior art, the utility model provides a kind of snakelike gas fired radiant tubes.This practicality is new
The snakelike gas fired radiant tubes that type is provided, the main part of radiant tube uses serpentine configuration, reduces as far as possible or reasonable employment straight length,
Thus, flue gas is big in radiant tube internal disturbance, augmentation of heat transfer, improves surface loading；Strong cutout campaign, to the carbon distribution of inwall
There are certain scouring effect, therefore wider range on Fuel Selection；With reference to the load of burner, air inducing pressure is rationally controlled,
Avoid with the presence of not compensability dead band inside radiant tube, radiant tube surface temperature difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated
Material is heated evenly.
Brief description of the drawings
The structural representation for the snakelike gas fired radiant tubes that Fig. 1 provides for the utility model.
The structural representation for the bend pipe that Fig. 2 provides for the utility model.
The operating diagram for the flow of flue gas that Fig. 3 provides for the utility model.
Wherein, 1, radiant tube main body, 1-1, straight tube, 1-2,180 ° of bend pipes, 1-3,90 ° of bend pipes, 2, radiant tube import and export, 3,
Radiant tube fixed charge method end plate.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, with reference to specific embodiment
The utility model is described in further detail.The embodiments described below is exemplary, is only used for explaining that this practicality is new
Type, and it is not intended that to limitation of the present utility model.
The utility model provides a kind of snakelike gas fired radiant tubes, as illustrated in fig. 1 and 2, including：Radiant tube main body 1, radiation
Pipe imports and exports 2 and radiant tube fixed charge method end plate 3, wherein, the radiant tube main body by many bend pipes and at least one straight tube 1-1 successively
Head and the tail are fixedly connected with composition, and the bend pipe includes 180 ° of bend pipe 1-2 and 90 ° of bend pipe 1-3, so that the radiant tube main body is
Forced convective heat transfer of flue in the serpentine configuration of closing, the disturbance for improving the flowing of radiant tube inside smoke, reinforcing radiant tube；Institute
The two ends for stating serpentine configuration are separately installed with the radiant tube import and export, and the radiant tube is imported and exported and the radiant tube fixing end
Plate is fixedly connected.
Inventor has found that the snakelike gas fired radiant tubes that the utility model is provided, the main part of radiant tube uses snakelike knot
Structure, is reduced as far as possible or reasonable employment straight length, thus, flue gas are big in radiant tube internal disturbance, augmentation of heat transfer, is improved surface and is born
Lotus；Strong cutout campaign, has certain scouring effect, therefore wider range on Fuel Selection to the carbon distribution of inwall；With reference to
The load of burner, rationally controls air inducing pressure, it is to avoid with the presence of not compensability dead band inside radiant tube, radiates pipe surface temperature
Difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated material heated evenly.
A kind of snakelike gas fired radiant tubes provided according to specific embodiment of the utility model, the utility model, including spoke
Penetrate pipe main body.The radiant tube main body is fixedly connected and constituted from beginning to end successively by many bend pipes with least one straight tube, the bend pipe
Including 180 ° of bend pipes and 90 ° of bend pipes, so that the radiant tube main body is the serpentine configuration of closing, for improving in radiant tube
Forced convective heat transfer of flue in the disturbance of portion's flow of flue gas, reinforcing radiant tube.Thus, the utility model is realized by curved with 180 °
Pipe and the form of 90 ° of bend pipe combinations, the perturbation of reinforcing radiant tube inside smoke flowing, are thinned the sticky bottom of turbulent boundary layer
Forced convective heat transfer of flue in layer, reinforcing radiant tube.
According to specific embodiment of the utility model, the quantity of bend pipe described in the utility model and the straight tube, material and
Connected mode is not particularly limited.According to some specific embodiments of the utility model, the quantity of the bend pipe is many, described
The quantity of straight tube is at least one；Further, in the bend pipe, the quantity of 180 ° of bend pipes is more than the quantity of 90 ° of bend pipes.It is preferred that
, as shown in Fig. 2 the quantity of 180 ° of bend pipes of the radiant tube main body is at least five, the quantity of 90 ° of bend pipes is four, institute
The straight tube for stating radiant tube main body is 1；Further, the quantity of 180 ° of bend pipes is 9.It is specific according to the utility model
The material of some embodiments, the bend pipe and the straight tube is heat-resisting material；It is preferred that, the material of the bend pipe and the straight tube
For heat resistant centrifugal cast steel.According to some specific embodiments of the utility model, by can between the bend pipe and the straight tube
Ensure that the mode that is fixedly connected of sealing well links together；It is preferred that, it can pass through between the bend pipe and the straight tube
The mode that is fixedly connected of welding is attached.Thus, the snakelike gas fired radiant tubes that the utility model is provided, the main part of radiant tube
Divide and use serpentine configuration, reduce as far as possible or reasonable employment straight length, so that flue gas is big in radiant tube internal disturbance, augmentation of heat transfer,
Improve surface loading.
According to specific embodiment of the utility model, the shape and material that radiant tube described in the utility model is imported and exported not by
Concrete restriction.According to some specific embodiments of the utility model, the radiant tube import and export are the bullet that upper end is small, lower end is big
Shell mould；Further, the lower end that the radiant tube is imported and exported is provided with flange.According to some specific implementations of the utility model
Example, the material that the radiant tube is imported and exported is heat-resisting material；It is preferred that, the material that the radiant tube is imported and exported is cast for heat resistant centrifugal
Steel.
According to specific embodiment of the utility model, the connected mode that radiant tube described in the utility model is imported and exported is not had
Body is limited.According to some specific embodiments of the utility model, the upper end that the radiant tube main body is imported and exported with the radiant tube
It can be fixedly connected by way of welding；The lower end that the radiant tube is imported and exported passes through welding with the radiant tube fixed charge method end plate
Mode be fixedly connected.
Meanwhile, the utility model additionally provides a kind of method of the snakelike gas fired radiant tubes prepared as described in above one,
Comprise the following steps：
（1）First weld many bend pipes and at least one straight tube of radiant tube main body.
According to specific embodiment of the utility model, the quantity and material of bend pipe described in the utility model and the straight tube are not
It is particularly limited.According to some specific embodiments of the utility model, the quantity of the bend pipe is many, the quantity of the straight tube
It is at least one；Further, in the bend pipe, the quantity of 180 ° of bend pipes is more than the quantity of 90 ° of bend pipes.It is preferred that, such as Fig. 2 institutes
Show, the quantity of 180 ° of bend pipes of the radiant tube main body is at least five, the quantity of 90 ° of bend pipes is four, the radiant tube master
The straight tube of body is 1；Further, the quantity of 180 ° of bend pipes is 9.According to some specific implementations of the utility model
The material of example, the bend pipe and the straight tube is heat-resisting material；It is preferred that, the material of the bend pipe and the straight tube for it is heat-resisting from
Heart cast steel., can consolidating by welding between the bend pipe and the straight tube according to some specific embodiments of the utility model
Determine connected mode to be attached.Thus, the snakelike gas fired radiant tubes that the utility model is provided, the main part of radiant tube uses snake
Shape structure, is reduced or reasonable employment straight length as far as possible, so that flue gas is big in radiant tube internal disturbance, augmentation of heat transfer improves surface
Load.
（2）The radiant tube main body and the radiant tube are imported and exported and welded.
According to specific embodiment of the utility model, the shape and material that radiant tube described in the utility model is imported and exported not by
Concrete restriction.According to some specific embodiments of the utility model, the radiant tube import and export are the bullet that upper end is small, lower end is big
Shell mould；Further, the lower end that the radiant tube is imported and exported is provided with flange.According to some specific implementations of the utility model
Example, the material that the radiant tube is imported and exported is heat-resisting material；It is preferred that, the material that the radiant tube is imported and exported is cast for heat resistant centrifugal
Steel.According to some specific embodiments of the utility model, the upper end that the radiant tube main body is imported and exported with the radiant tube can be with
It is fixedly connected by way of welding.
（3）After the centering of center, the radiant tube is imported and exported and welded with radiant tube fixed charge method end plate.
According to specific embodiment of the utility model, as shown in figure 1, after after the centering of center, what the radiant tube was imported and exported
Lower end is fixedly connected with the radiant tube fixed charge method end plate by way of welding.
（4）After the completion of welding, weldquality is checked, and is heat-treated according to the welding procedure of centrifugal steel, heat is reduced
Stress deformation.
（5）Pressure and leak test are done to the snakelike gas fired radiant tubes.
According to specific embodiment of the utility model, as shown in figure 3, pair of suction and the burner combustion exhaust in air-introduced machine
Under recast is used, the flue gas in radiant tube has certain speed.According to some specific embodiments of the utility model, such as Fig. 3 institutes
Show, the radiation inner tube smoke with certain speed is considered as vector motion, and the motion side of air-flow is represented using the direction of arrow
To from figure 3, it can be seen that the radiant tube for the serpentine configuration that the utility model is provided can make flue gas there are indivedual dead bands.But, knot
Close and seen on whole burner, within the very short commutation cycle, the inlet and outlet of flue gas can form regular alternating, that is,
The dead band for saying air inlet is the active region of exhaust, and the dead band of exhaust is also the active region of air inlet；Meanwhile, because the utility model is provided
Snakelike gas fired radiant tubes commutation cycle it is short, it is this make up cause radiant tube more uniform temperature because the utility model is carried
The snakelike gas fired radiant tubes supplied has enhanced heat exchange so that surface loading is higher.Thus, the snakelike combustion gas spoke that the utility model is provided
Penetrate pipe, can combine burner load, rationally control air inducing pressure, it is to avoid have inside radiant tube not compensability dead band deposit
Radiant tube surface temperature difference is small；Strong cutout campaign, has certain scouring effect to the carbon distribution of inwall, therefore in fuel choosing
Use wider range；The projected area of Enhanced Radiation Reduced Blast, is heated material heated evenly.
Inventor has found that the snakelike gas fired radiant tubes that the utility model is provided, the main part of radiant tube uses snakelike knot
Structure, is reduced as far as possible or reasonable employment straight length, thus, flue gas are big in radiant tube internal disturbance, augmentation of heat transfer, is improved surface and is born
Lotus；Strong cutout campaign, has certain scouring effect, therefore wider range on Fuel Selection to the carbon distribution of inwall；With reference to
The load of burner, rationally controls air inducing pressure, it is to avoid with the presence of not compensability dead band inside radiant tube, radiates pipe surface temperature
Difference is small；The projected area of Enhanced Radiation Reduced Blast, is heated material heated evenly.
Embodiment 1
The utility model is by taking the radiant tube needed for 140 KW external regenerative radiant tube burners as an example, radiant tube main body
It is ZG45Cr28Ni48W5 with the material that radiant tube is imported and exported, the material of radiant tube fixed charge method end plate is Q235-A.
Manufacturer's standard uses tungsten arc inert-gas welding (TIG welding) with reference to HG/T2601-2011 during welding, welder should obtain
Corresponding qualification.Dimensional tolerance is according to GB/T1804-m grades, and line position tolerance is according to GB/T1184-k grades, after the completion of welding, weld seam
100% defect detecting test, air seal test 0.3Mpa, pressurize 30 minutes.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature can in an appropriate manner be combined in any one or more embodiments or example.
In description of the present utility model, it is to be understood that term " on ", " under ", "left", "right", " interior ", " outer " etc.
The orientation or position relationship of instruction are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model
Described with simplifying, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific orientation structure
Make and operate, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second " are only used for describing mesh
, and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, limit
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".It is new in this practicality
In the description of type, unless otherwise indicated, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or point connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification, simultaneously for those of ordinary skill in the art, foundation
The thought of the application, will change in specific embodiments and applications.
Claims (7)
1. a kind of snakelike gas fired radiant tubes, it is characterised in that including：Radiant tube main body, radiant tube are imported and exported and radiant tube is fixed
End plate, wherein, the radiant tube main body is fixedly connected and constituted from beginning to end successively by many bend pipes with least one straight tube, the bend pipe
Including 180 ° of bend pipes and 90 ° of bend pipes, so that the radiant tube main body is the serpentine configuration of closing, for improving in radiant tube
Forced convective heat transfer of flue in the disturbance of portion's flow of flue gas, reinforcing radiant tube；The two ends of the serpentine configuration are separately installed with described
Radiant tube is imported and exported, and the radiant tube is imported and exported and is fixedly connected with the radiant tube fixed charge method end plate.
2. snakelike gas fired radiant tubes as claimed in claim 1, it is characterised in that in many bend pipes, the number of 180 ° of bend pipes
Amount is more than the quantity of 90 ° of bend pipes.
3. snakelike gas fired radiant tubes as claimed in claim 2, it is characterised in that the number of 180 ° of bend pipes of the radiant tube main body
It is at least five to measure, and the quantity of 90 ° of bend pipes is four, and the straight tube of the radiant tube main body is 1.
4. snakelike gas fired radiant tubes as claimed in claim 3, it is characterised in that the quantity of 180 ° of bend pipes is 9.
5. snakelike gas fired radiant tubes as claimed in claim 1, it is characterised in that the radiant tube import and export for upper end it is small, under
The big bullet shell mould in end, the lower end that the radiant tube is imported and exported is provided with flange.
6. snakelike gas fired radiant tubes as claimed in claim 1, it is characterised in that the material of the radiant tube main body for it is heat-resisting from
Heart cast steel.
7. snakelike gas fired radiant tubes as claimed in claim 1, it is characterised in that the bend pipe and straight tube of the radiant tube main body it
Between be fixedly connected by way of welding；The radiant tube main body imports and exports the company of fixation by way of welding with the radiant tube
Connect；The radiant tube is imported and exported and is fixedly connected with the radiant tube fixed charge method end plate by way of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384573.XU CN206522769U (en) | 2016-12-16 | 2016-12-16 | A kind of snakelike gas fired radiant tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384573.XU CN206522769U (en) | 2016-12-16 | 2016-12-16 | A kind of snakelike gas fired radiant tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522769U true CN206522769U (en) | 2017-09-26 |
Family
ID=59888609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621384573.XU Expired - Fee Related CN206522769U (en) | 2016-12-16 | 2016-12-16 | A kind of snakelike gas fired radiant tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594728A (en) * | 2016-12-16 | 2017-04-26 | 北京神雾环境能源科技集团股份有限公司 | S-shaped fuel gas radiation pipe |
-
2016
- 2016-12-16 CN CN201621384573.XU patent/CN206522769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594728A (en) * | 2016-12-16 | 2017-04-26 | 北京神雾环境能源科技集团股份有限公司 | S-shaped fuel gas radiation pipe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: S-shaped fuel gas radiation pipe Effective date of registration: 20180322 Granted publication date: 20170926 Pledgee: The Bank of Beijing Limited by Share Ltd. Anwar Road Branch Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000210 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Effective date of registration: 20190121 Granted publication date: 20170926 |
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Date of cancellation: 20220921 Granted publication date: 20170926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |