CN204005994U - A kind of high thermal efficiency radiant tube - Google Patents
A kind of high thermal efficiency radiant tube Download PDFInfo
- Publication number
- CN204005994U CN204005994U CN201420392692.4U CN201420392692U CN204005994U CN 204005994 U CN204005994 U CN 204005994U CN 201420392692 U CN201420392692 U CN 201420392692U CN 204005994 U CN204005994 U CN 204005994U
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- burner
- pipeline
- radiant tube
- thermal efficiency
- high thermal
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Abstract
The utility model discloses a kind of high thermal efficiency radiant tube, a kind of high thermal efficiency radiant tube, by W type body, the first burner, the second burner and conducting pipeline, formed, the termination, one end of described W type body is connected with the first burner, other end termination is connected with the second burner, and the first burner and the second burner are equipped with pipeline connector; Described conducting pipeline is provided with reversal valve, and one end of conducting pipeline is connected with the pipeline connector of the first burner, the other end is connected with the pipeline connector of the second burner; In described the first burner and the second burner, be provided with heat storage, start-up burner, and heat storage is wrapped in start-up burner outside; The start-up burner of described the first burner and the second burner is all connected with fuel gas pipeline, and is provided with valve on fuel gas pipeline; Described reversal valve is connected with air pipe line and flue gas pipeline.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 high thermal efficiency 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 high thermal efficiency 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 high thermal efficiency radiant tube, by W type body, the first burner, the second burner and conducting pipeline, formed, the termination, one end of described W type body is connected with the first burner, other end termination is connected with the second burner, and the first burner and the second burner are equipped with pipeline connector; Described conducting pipeline is provided with reversal valve, and one end of conducting pipeline is connected with the pipeline connector of the first burner, the other end is connected with the pipeline connector of the second burner; In described the first burner and the second burner, be provided with heat storage, start-up burner, and heat storage is wrapped in start-up burner outside; The start-up burner of described the first burner and the second burner is all connected with fuel gas pipeline, and is provided with valve on fuel gas pipeline; Described reversal valve is connected with air pipe line and flue gas pipeline.
As a kind of preferred version, described reversal valve is four-way change-over valve.
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 high thermal efficiency radiant tube, by W type body 1, the first burner 2, the second burner 3 and conducting pipeline 4, formed, the termination, one end of described W type body 1 is connected with the first burner 2, other end termination is connected with the second burner 3, and the first burner 2 and the second burner 3 are equipped with pipeline connector 5; Described conducting pipeline 4 is provided with reversal valve 6, and one end of conducting pipeline 4 is connected with the pipeline connector 5 of the first burner 2, the other end is connected with the pipeline connector 5 of the second burner 3; In described the first burner 2 and the second burner 3, be provided with heat storage 7, start-up burner 8, and heat storage 7 is wrapped in start-up burner 8 outsides; The start-up burner 8 of described the first burner 2 and the second burner 3 is all connected with fuel gas pipeline 9, and is provided with valve 10 on fuel gas pipeline 9; Described reversal valve 6 is connected with air pipe line 11 and flue gas pipeline 12; Described reversal valve 6 is four-way change-over valve.During concrete enforcement, air first heats through the heat storage 7 of the first burner 2 by conducting pipeline 4, burn with fuel mix, after the heat storage 7 of hot flue gas the second burner 3 in W type body 1, through flue gas pipeline 12, discharge again, by reversal valve 6, change the flow direction of air, air is flowed into by the second burner 3, flue gas is discharged by the first burner 2, the heat storage 7 of flow through the first burner 2 and the second burner 3 that air and flue gas so replace, by heat storage 7 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 reversal valve 6, and it is incendiary source that radiant tube uses start-up burner to do 8.
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. a high thermal efficiency radiant tube, it is characterized in that: described radiant tube is comprised of W type body, the first burner, the second burner and conducting pipeline, the termination, one end of described W type body is connected with the first burner, other end termination is connected with the second burner, and the first burner and the second burner are equipped with pipeline connector; Described conducting pipeline is provided with reversal valve, and one end of conducting pipeline is connected with the pipeline connector of the first burner, the other end is connected with the pipeline connector of the second burner; In described the first burner and the second burner, be provided with heat storage, start-up burner, and heat storage is wrapped in start-up burner outside; The start-up burner of described the first burner and the second burner is all connected with fuel gas pipeline, and is provided with valve on fuel gas pipeline; Described reversal valve is connected with air pipe line and flue gas pipeline.
2. a kind of high thermal efficiency radiant tube according to claim 1, is characterized in that: described reversal valve is four-way change-over valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392692.4U CN204005994U (en) | 2014-07-16 | 2014-07-16 | A kind of high thermal efficiency radiant tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392692.4U CN204005994U (en) | 2014-07-16 | 2014-07-16 | A kind of high thermal efficiency radiant tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204005994U true CN204005994U (en) | 2014-12-10 |
Family
ID=52045992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420392692.4U Expired - Fee Related CN204005994U (en) | 2014-07-16 | 2014-07-16 | A kind of high thermal efficiency radiant tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204005994U (en) |
-
2014
- 2014-07-16 CN CN201420392692.4U patent/CN204005994U/en not_active Expired - Fee Related
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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 |