CN204005993U - A kind of low pollution radiant tube - Google Patents
A kind of low pollution radiant tube Download PDFInfo
- Publication number
- CN204005993U CN204005993U CN201420392606.XU CN201420392606U CN204005993U CN 204005993 U CN204005993 U CN 204005993U CN 201420392606 U CN201420392606 U CN 201420392606U CN 204005993 U CN204005993 U CN 204005993U
- Authority
- CN
- China
- Prior art keywords
- burner
- radiant tube
- conducting orifice
- coal gas
- tube body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Combustion Of Fluid Fuel (AREA)
- Air Supply (AREA)
Abstract
The utility model discloses a kind of low pollution radiant tube, comprise W type radiant tube body, burner arrangement and four-way change-over valve, there is respectively burner arrangement the termination, two ends of described W type radiant tube body, and is provided with high-temperature resistant inner lining pipe in W type radiant tube body; Described burner arrangement is comprised of start-up burner, heat storage, and is provided with burner conducting orifice and coal gas conducting orifice; Described start-up burner is built in burner arrangement, and is provided with heat storage between start-up burner and burner arrangement inwall; Described burner conducting orifice is connected with four-way change-over valve by conduit, and this four-way change-over valve is also connected with air conduction pipe and flue gas conduction pipe; Described coal gas conducting orifice is provided with coal gas conduction pipe, and is provided with coal gas and cuts soon valve.The utility model has solved inhomogeneous, heating efficiency is poor, heating quality is poor and service life the is short problem of radiant tube surface temperature.
Description
Technical field
The utility model has related to radiant tube field, has related in particular to a kind of low pollution radiant tube.
Background technology
Gas fired radiant tubes is a kind of heater of burning gases fuel; gaseous fuel is at the radiation combustion inner pipe of sealing; by the tube-surface being heated, take heat radiation and heat is delivered to heating object as principal mode; combustion atmosphere does not contact with heating object with product; this,, just for to heat-treat the condition created under protective atmosphere, is specially adapted to product quality to require high occasion.Gas fired radiant tubes has that combustion thermal efficiency is high, stable, equipment dependability high, is widely used in various heat-treatment furnaces and continuous annealing furnace etc.
According to the cast of radiant tube, can be divided into straight pipe type, thimble tube, U-shaped, W type, Trident Type, P type, double-P type etc.No matter be the radiant tube of which kind of type, in combustion process, due to higher in flame zone flue-gas temperature, radiant heat flux density is large, and radiant tube wall temperature is higher, forms the high temperature section of radiant tube; And flue gas and radiant tube are along in journey heat transfer process after flame zone, flue-gas temperature reduces gradually, and radiant heat flux reduces, and radiant tube temperature is lower, forms the low-temperature zone of radiant tube, and the temperature distributing rule of this radiant tube has been tested and think tank confirms.Therefore inevitably cause the inhomogeneities of radiant tube surface temperature, thereby affect heating efficiency and the heating quality of radiant tube, the service life of having reduced radiant tube.
Summary of the invention
The deficiency existing for prior art, the purpose of this utility model is just to provide a kind of low pollution radiant tube, has solved inhomogeneous, heating efficiency is poor, heating quality is poor and service life the is short problem of radiant tube surface temperature.
To achieve these goals, the technical solution adopted in the utility model is such: a kind of low pollution radiant tube, comprise W type radiant tube body, burner arrangement and four-way change-over valve, there is respectively burner arrangement the termination, two ends of described W type radiant tube body, and is provided with high-temperature resistant inner lining pipe in W type radiant tube body; Described burner arrangement is comprised of start-up burner, heat storage, and is provided with burner conducting orifice and coal gas conducting orifice; Described start-up burner is built in burner arrangement, and is provided with heat storage between start-up burner and burner arrangement inwall; Described burner conducting orifice is connected with four-way change-over valve by conduit, and this four-way change-over valve is also connected with air conduction pipe and flue gas conduction pipe; Described coal gas conducting orifice is provided with coal gas conduction pipe, and is provided with coal gas and cuts soon valve.
As a kind of preferred version, the burner conducting orifice at described W type radiant tube body two ends is relative and be positioned at same straight line, and described four-way change-over valve is positioned in the middle of the burner conducting orifice at W type radiant tube body two ends.
Compared with prior art, the beneficial effects of the utility model:
1. long because of flue gas flow path in pipe, rocket motor is many, and heat exchange effect is stronger, and exhaust gas temperature reduces, and has improved the thermal efficiency;
2. surface temperature distribution good uniformity, makes to be heated workpiece and is heated evenly, and has improved productivity ratio and product quality;
3. reduce thermal stress and the Partial ablation of radiant tube, service life of radiant tubes service life, reduced production cost;
4. ignition temperature is all evenly distributed, and there is no localized hyperthermia district; In commutation process, combustion zone suction part is delayed, and reduces combustion zone oxygen concentration, thereby contributes to suppress the generation of oxynitrides, has reduced the discharge of pollutant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment:
As shown in Figure 1, a kind of low pollution radiant tube, comprises W type radiant tube body 1, burner arrangement and four-way change-over valve 2, and there is respectively burner arrangement the termination, two ends of described W type radiant tube body 1, and is provided with high-temperature resistant inner lining pipe 3 in W type radiant tube body 1; Described burner arrangement is comprised of start-up burner 4, heat storage 5, and is provided with burner conducting orifice 6 and coal gas conducting orifice 7; Described start-up burner 4 is built in burner arrangement, and is provided with heat storage 5 between start-up burner 4 and burner arrangement inwall; Described burner conducting orifice 6 is connected with four-way change-over valve 2 by conduit 8, and this four-way change-over valve 2 is also connected with air conduction pipe 9 and flue gas conduction pipe 10; Described coal gas conducting orifice 7 is provided with coal gas conduction pipe 11, and is provided with coal gas and cuts soon valve 12; Relatively and be positioned at same straight line, described four-way change-over valve 2 is positioned in the middle of the burner conducting orifice 6 at W type radiant tube body 1 two ends the burner conducting orifice 6 at described W type radiant tube body 1 two ends.During concrete enforcement, cold air first, through heat storage 5 heating of A burner arrangement 13, with fuel mix burning, after the heat storage 5 of the hot flue gas B burner arrangement 14 in radiant tube, is discharged by flue gas conduction pipe 10; By changing the flow direction of gas in radiant tube, cold air is flowed into by B burner arrangement 14, and flue gas is discharged by A burner arrangement 13; The A burner arrangement 13 of flowing through that cold air and hot flue gas so replace, the heat storage of B burner arrangement 14, by heat storage 5 heat-shifts, air can be preheated to and approach radiant tube tube wall temperature, thereby realizes the limit recovery of flue gas heat; The conversion of air, flow of flue gas direction realizes by four-way change-over valve 2, and radiant tube uses start-up burner 4 as incendiary source.
Finally it should be noted that, above embodiment is the non-limiting technical scheme in order to the technical solution of the utility model to be described only, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or are equal to replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. one kind low pollution radiant tube, it is characterized in that: described radiant tube comprises W type radiant tube body, burner arrangement and four-way change-over valve, there is respectively burner arrangement the termination, two ends of described W type radiant tube body, and is provided with high-temperature resistant inner lining pipe in W type radiant tube body; Described burner arrangement is comprised of start-up burner, heat storage, and is provided with burner conducting orifice and coal gas conducting orifice; Described start-up burner is built in burner arrangement, and is provided with heat storage between start-up burner and burner arrangement inwall; Described burner conducting orifice is connected with four-way change-over valve by conduit, and this four-way change-over valve is also connected with air conduction pipe and flue gas conduction pipe; Described coal gas conducting orifice is provided with coal gas conduction pipe, and is provided with coal gas and cuts soon valve.
2. a kind of low pollution radiant tube according to claim 1, is characterized in that: relatively and be positioned at same straight line, described four-way change-over valve is positioned in the middle of the burner conducting orifice at W type radiant tube body two ends the burner conducting orifice at described W type radiant tube body two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392606.XU CN204005993U (en) | 2014-07-16 | 2014-07-16 | A kind of low pollution radiant tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392606.XU CN204005993U (en) | 2014-07-16 | 2014-07-16 | A kind of low pollution radiant tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204005993U true CN204005993U (en) | 2014-12-10 |
Family
ID=52045991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420392606.XU Expired - Fee Related CN204005993U (en) | 2014-07-16 | 2014-07-16 | A kind of low pollution radiant tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204005993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224960A (en) * | 2016-07-27 | 2016-12-14 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor and combustion method thereof |
| CN106482101A (en) * | 2016-12-16 | 2017-03-08 | 北京神雾环境能源科技集团股份有限公司 | A kind of combination type radiant tube combustion device |
-
2014
- 2014-07-16 CN CN201420392606.XU patent/CN204005993U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224960A (en) * | 2016-07-27 | 2016-12-14 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor and combustion method thereof |
| CN106482101A (en) * | 2016-12-16 | 2017-03-08 | 北京神雾环境能源科技集团股份有限公司 | A kind of combination type radiant tube combustion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |