CN213067042U - Continuous furnace - Google Patents
Continuous furnace Download PDFInfo
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- CN213067042U CN213067042U CN202021195107.3U CN202021195107U CN213067042U CN 213067042 U CN213067042 U CN 213067042U CN 202021195107 U CN202021195107 U CN 202021195107U CN 213067042 U CN213067042 U CN 213067042U
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Abstract
The application discloses continuous furnace, this continuous furnace includes: the furnace body is hollow inside to form a furnace chamber, the furnace chamber is provided with a workpiece inlet end and a workpiece outlet end, and the furnace chamber is sequentially provided with a preheating zone A, a heating zone B and a uniform heating zone C along the direction from the workpiece inlet end to the workpiece outlet end; the heating device is arranged in the furnace body and is positioned in the heating area B and the uniform heating area C, so that the temperature in the furnace cavity reaches a preset temperature; the waste heat utilization device is arranged in the furnace body and positioned in the preheating area A, and provides a heat source for the preheating area A by utilizing the flue gas waste heat of the heating area B and the uniform heating area C; and the flue gas connecting pipeline is connected with the heating device and the waste heat utilization device and is used for conveying the flue gas in the heating area B and the uniform heating area C to the preheating area A. Through the mode, the continuous furnace in the application can effectively utilize the waste heat of the furnace, and has the advantages of low use cost, energy conservation and environmental protection.
Description
Technical Field
The application relates to the technical field of industrial furnaces, in particular to a continuous furnace.
Background
Continuous furnaces are heat treatment furnaces in which a charge is continuously or intermittently made and a workpiece is continuously moved in the furnace to complete the entire process of heating, holding, and sometimes cooling. The existing continuous furnace is not provided with a waste heat utilization structure, so that energy waste is caused. Therefore, it is necessary to develop a continuous furnace.
Disclosure of Invention
Aiming at the defects in the technology, the continuous furnace can effectively utilize the self waste heat, and has the advantages of low use cost, energy conservation and environmental protection.
In order to solve the technical problem, the technical scheme adopted by the application is as follows:
a continuous furnace comprising: the furnace body is hollow inside to form a furnace chamber, the furnace chamber is provided with a workpiece inlet end and a workpiece outlet end, and the furnace chamber is sequentially provided with a preheating zone A, a heating zone B and a uniform heating zone C along the direction from the workpiece inlet end to the workpiece outlet end; the heating device is arranged in the furnace body and is positioned in the heating area B and the heat homogenizing area C, so that the temperature in the furnace cavity reaches a preset temperature; the waste heat utilization device is arranged in the furnace body and positioned in the preheating area A, and provides a heat source for the preheating area A by using the flue gas waste heat of the heating area B and the uniform heat area C; and the flue gas connecting pipeline is connected with the heating device and the waste heat utilization device and is used for conveying the flue gas in the heating area B and the uniform heat area C to the preheating area A.
In an embodiment of the present application, the heating device includes: the burner assembly is arranged on the furnace wall of the furnace body and used for generating high-temperature flue gas; the smoke collecting pipe is arranged on the furnace wall of the furnace body and is connected with the smoke connecting pipeline; and the plurality of radiation tubes are positioned in the furnace cavity, are communicated with the burner assembly and the flue gas collecting tube, and are used for conducting the heat of the high-temperature flue gas generated by the burner assembly to the furnace cavity in a heat radiation mode and guiding the cooled flue gas out of the furnace body.
In an embodiment of the present application, a plurality of the radiant tubes are arranged side by side at equal intervals along the running direction of the workpiece.
In an embodiment of the present application, the radiant tube has a hot end and a cold end, wherein the hot end is connected to the burner assembly, and the cold end is connected to the flue gas collecting pipe.
In an embodiment of this application, the one end of flue gas collecting pipe extends into the furnace body with the cold junction is connected, the other end expose in the outside of furnace body with flue gas connecting line connects.
In an embodiment of the present application, the waste heat utilization device includes a flue gas inlet disposed on the furnace wall of the furnace body and connected to the flue gas connection pipeline, a flue gas outlet disposed on the furnace wall of the furnace body, and a heat dissipation pipe connected to the flue gas inlet and the flue gas outlet for transferring the flue gas waste heat of the heating area B and the uniform heating area C to the preheating area a; the heat dissipation pipes are distributed along the direction from the workpiece inlet end to the workpiece outlet end.
In an embodiment of the present application, the furnace chamber further includes a cooling region D; the furnace chamber is provided with the preheating zone A, the heating zone B, the uniform heating zone C and the cooling zone D in sequence along the direction from the workpiece inlet end to the workpiece outlet end.
In an embodiment of the present application, the preheating zone a and the cooling zone D are connected by a fan pipeline, and a circulating fan is disposed on the fan pipeline to promote the gas in the cooling zone D and the gas in the preheating zone a to circularly flow.
Compared with the prior art, the application has the beneficial effects that:
the application provides a continuous furnace, it effectively utilizes through the waste heat that produces when cooling down the flue gas waste heat and the work piece to the zone of heating B and even hot district C, can reduce use cost low through utilizing self waste heat, has energy-concerving and environment-protective advantage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic view of a continuous furnace as proposed in the present application in a top view;
FIG. 2 is a schematic cross-sectional view taken along the direction M-M in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the line P-P in FIG. 1;
in the figure, 100-heating means; 110-a burner assembly; 111-burner combustion chamber; 112-burner block; 113-a gas burner; 120-a flue gas collection pipe; 130-a radiant tube; 131-a hot end; 132-cold end; 200-continuous furnace; 210-a furnace body; 211-furnace chamber; 213-workpiece entry end; 214-workpiece exit end; 300-a workpiece; 400-a waste heat utilization device; 410-flue gas inlet; 420-flue gas outlet; 430-heat dissipation pipe.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic view of a continuous furnace 200 according to the present invention in a top view, fig. 2 is a schematic view of a cross-sectional structure in a direction M-M in fig. 1, and fig. 3 is a schematic view of a cross-sectional structure in a direction P-P in fig. 1. In the present application, the continuous furnace 200 comprises: a furnace body 210 which is hollow inside to form a furnace chamber 211, wherein the furnace chamber 211 is provided with a workpiece inlet end 213 and a workpiece outlet end 214, and the furnace chamber 211 is provided with a preheating zone A, a heating zone B and a uniform heating zone C in sequence along the direction from the workpiece inlet end 213 to the workpiece outlet end 214; the heating device 100 is arranged in the furnace body 210 and is positioned in the heating zone B and the uniform heating zone C, so that the temperature in the furnace chamber 211 reaches a preset temperature; the waste heat utilization device 400 is arranged in the furnace body 210 and is positioned in the preheating area A, and provides a heat source for the preheating area A by using the flue gas waste heat of the heating area B and the uniform heating area C; and a flue gas connecting pipeline (not shown) connecting the heating device 100 and the waste heat utilization device 400, and used for conveying the flue gas in the heating area B and the uniform heating area C to the preheating area a.
In this way, continuous furnace 200 in this application can utilize the flue gas waste heat of the zone of heating B and even hot district C to provide the heat source to preheating zone A, in order supplementary work piece 300 in the preheating zone A preheats, from this, can utilize self waste heat effectively, has use cost low, energy-concerving and environment-protective advantage.
Further, referring to fig. 2, the workpiece 300 is disposed in the cavity 211 of the furnace body 210 in a manner of proceeding in a suspended manner, and the heating devices 100 are symmetrically disposed on two sides of the workpiece 300, wherein a cross-sectional view in the M-M direction is the same as a cross-sectional view in the N-N direction. The heating device 100 includes: the burner assembly 110 is arranged on the wall of the furnace body 210 and used for generating high-temperature flue gas; the smoke collecting pipe 120 is arranged on the wall of the furnace body 210 and is connected with the smoke connecting pipeline; and the plurality of radiation pipes 130 are positioned in the furnace chamber 211, are communicated with the burner assembly 110 and the flue gas collection pipe 120, and are used for conducting heat of high-temperature flue gas generated by the burner assembly 110 to the furnace chamber 211 in a heat radiation mode and guiding the cooled flue gas out of the furnace body 210. In this application, the plurality of radiant tubes 130 in the heating zone B and the uniform heating zone C can uniformly radiate the high-temperature flue gas generated by the burner assembly 110 to the furnace chamber 211 along the suspension direction of the workpiece 300, and then the workpiece 300 can absorb heat from the furnace chamber 211 to heat up, so that the workpiece 300 has the advantage of uniform heating
The plurality of radiant tubes 130 are arranged side by side at equal intervals in the traveling direction of the workpiece 300 in consideration of the uniformity of heat applied to the workpiece 300. Thus, the workpiece 300 can be heated uniformly and continuously during the forward running process.
Further, one end of the radiation pipe 130 is connected to the burner assembly 110, and the other end is connected to the flue gas collection pipe 120. The burner assembly 110 generates high-temperature flue gas by burning fuel gas, so that the temperature of the burner assembly 110 side is high; the flue gas collecting pipe 120 is used for collecting flue gas after heat radiation, a large amount of heat is absorbed by the furnace chamber 211 in the process that high-temperature flue gas generated by the burner assembly 110 passes through the furnace chamber 211, and only part of heat is left when the high-temperature flue gas reaches the flue gas collecting pipe 120, so that the temperature of the side of the flue gas collecting pipe 120 is lower than that of the side of the burner assembly 110. Thus, one end of the radiant tube 130 connected to the burner assembly 110 is a hot end 131, and the other end connected to the flue gas collection tube 120 is a cold end 132.
Further, one end of the flue gas collecting pipe 120 extends into the furnace body 210 and is connected with the cold end 132, and the other end is exposed outside the furnace body 210 and is connected with the flue gas connecting pipeline.
Further, burner assembly 110 is located the furnace body 210 outside, including dismantling burner combustion chamber 111 that sets up on the outer oven of furnace body 210, set up in burner block 112 of burner combustion chamber 111, the gas nozzle 113 of being connected with burner block 112, wherein, the spout of burner combustion chamber 111 sets up towards furnace body 210, is provided with the through-hole relative with the spout on the furnace body 210 to make hot junction 131 and burner combustion chamber 111 communicate.
Further, referring to fig. 3, the waste heat utilization device 400 includes a flue gas inlet 410 disposed on the furnace wall of the furnace body 210 and connected to the flue gas connection pipeline, a flue gas outlet 420 disposed on the furnace wall of the furnace body 210, and a heat dissipation pipe 430 connected to the flue gas inlet 410 and the flue gas outlet 420 for transferring the flue gas waste heat of the heating area B and the uniform heating area C to the preheating area a; wherein the heat dissipation tubes 430 are distributed along the direction from the workpiece inlet end 213 to the workpiece outlet end 214.
Further, with continued reference to fig. 1, the furnace chamber 211 further includes a cooling region D; the furnace chamber 211 has the preheating region a, the heating region B, the soaking region C, and the cooling region D in this order along the direction from the workpiece inlet end 213 to the workpiece outlet end 214.
Further, the preheating zone a and the cooling zone D are connected by a fan pipeline, and a circulating fan is arranged on the fan pipeline to promote the air in the cooling zone D and the air in the preheating zone a to circularly flow, so that the heat (waste heat) released by the workpiece 300 can be transferred to the preheating zone a.
A method for utilizing waste heat of a continuous furnace 200, please continue to refer to fig. 1 to 3, comprising:
step one, a furnace chamber 211 of a furnace body 210 is divided into a preheating zone A, a heating zone B and a uniform heating zone C in sequence along the direction from a workpiece inlet end 213 to a workpiece outlet end 214;
step two, arranging heating devices 100 in the heating area B and the uniform heating area C;
step three, arranging a waste heat utilization device 400 in the preheating area A;
fourthly, the heating device 100 and the waste heat utilization device 400 are connected through a smoke connecting pipeline, and the smoke waste heat of the heating area B and the uniform heating area C is utilized to preheat the workpiece 300 in the preheating area A;
specifically, the heating device 100 is provided with a burner assembly 110 and a flue gas collecting pipe 120 on the wall of the furnace body 210, the flue gas collecting pipe 120 and a flue gas connecting pipeline, and the flue gas discharged from the heating area B and the uniform heating area C is conveyed to the preheating area a through the flue gas connecting pipeline; the waste heat utilization device 400 is provided with a flue gas inlet 410 and a flue gas outlet 420 on the furnace wall of the furnace body 210, and the flue gas inlet 410 is connected with a flue gas connecting pipeline, so that flue gas discharged from the heating area B and the uniform heating area C can enter the preheating area A, and waste heat utilization is realized.
Further, in the first step, the furnace chamber 211 of the furnace body 210 is further divided into a cooling zone D, and thus, the furnace chamber 211 has a preheating zone a, a heating zone B, a uniform heating zone C and the cooling zone D in this order in the direction from the workpiece inlet end 213 to the workpiece outlet end 214. Because the workpiece 300 in the cooling zone D releases partial heat in the cooling process, and the temperature of the cooling zone D is higher than that of the preheating zone a, it can be understood that a fan pipeline is connected between the preheating zone a and the cooling zone D, a circulating fan is arranged on the fan pipeline, and circulating airflow generated by the circulating fan can form airflow stirring between the preheating zone a and the cooling zone D, so that the heat in the cooling zone D is transferred to the preheating zone a, the workpiece 300 is assisted to be preheated, and the utilization of residual heat is realized.
In summary, the continuous furnace and the waste heat utilization method thereof provided by the application can effectively utilize the flue gas waste heat of the heating area B and the uniform heating area C and the waste heat generated during cooling of the workpiece 300, can reduce the use cost by utilizing the waste heat of the continuous furnace, and have the advantages of energy conservation and environmental protection.
The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.
Claims (8)
1. A continuous furnace (200), comprising:
the furnace body (210) is arranged in a hollow mode to form a furnace chamber (211), the furnace chamber (211) is provided with a workpiece inlet end (213) and a workpiece outlet end (214), and the furnace chamber (211) is sequentially provided with a preheating zone A, a heating zone B and a uniform heating zone C along the direction from the workpiece inlet end (213) to the workpiece outlet end (214);
the heating device (100) is arranged in the furnace body (210) and is positioned in the heating area B and the uniform heating area C, so that the temperature in the furnace chamber (211) reaches a preset temperature;
the waste heat utilization device (400) is arranged in the furnace body (210) and is positioned in the preheating area A, and a heat source is provided for the preheating area A by using the flue gas waste heat of the heating area B and the uniform heat area C; and
and the flue gas connecting pipeline is connected with the heating device (100) and the waste heat utilization device (400) and is used for conveying the flue gas in the heating area B and the heat homogenizing area C to the preheating area A.
2. Continuous oven (200) according to claim 1, characterized in that said heating means (100) comprise:
the burner assembly (110) is arranged on the wall of the furnace body (210) and is used for generating high-temperature flue gas;
the smoke collecting pipe (120) is arranged on the wall of the furnace body (210) and is connected with the smoke connecting pipeline; and
the plurality of radiant tubes (130) are positioned in the furnace chamber (211), are communicated with the burner assembly (110) and the flue gas collecting tube (120), and are used for conducting heat of high-temperature flue gas generated by the burner assembly (110) to the furnace chamber (211) in a heat radiation mode and guiding the cooled flue gas out of the furnace body (210).
3. Continuous furnace (200) according to claim 2,
the plurality of radiant tubes (130) are arranged side by side at equal intervals along the running direction of the workpiece (300).
4. Continuous furnace (200) according to claim 2,
the radiant tube (130) is provided with a hot end (131) and a cold end (132), wherein the hot end (131) is connected with the burner assembly (110), and the cold end (132) is connected with the flue gas collecting tube (120).
5. Continuous furnace (200) according to claim 4,
one end of the smoke collecting pipe (120) extends into the furnace body (210) and is connected with the cold end (132), and the other end of the smoke collecting pipe is exposed out of the outer side of the furnace body (210) and is connected with the smoke connecting pipeline.
6. Continuous furnace (200) according to claim 1,
the waste heat utilization device (400) comprises a flue gas inlet (410) which is arranged on the wall of the furnace body (210) and is connected with the flue gas connecting pipeline, a flue gas outlet (420) which is arranged on the wall of the furnace body (210), and a heat dissipation pipe (430) which is connected with the flue gas inlet (410) and the flue gas outlet (420) and is used for transferring the flue gas waste heat of the heating area B and the uniform heat area C to the preheating area A;
wherein the heat dissipation tubes (430) are distributed along a direction from the workpiece inlet end (213) to the workpiece outlet end (214).
7. Continuous furnace (200) according to claim 1,
the furnace chamber (211) further comprises a cooling area D;
wherein the furnace chamber (211) is provided with the preheating zone A, the heating zone B, the soaking zone C and the cooling zone D in sequence in the direction from the workpiece inlet end (213) to the workpiece outlet end (214).
8. Continuous furnace (200) according to claim 7,
the preheating zone A and the cooling zone D are connected through a fan pipeline, and a circulating fan is arranged on the fan pipeline to promote air in the cooling zone D and air in the preheating zone A to circularly flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195107.3U CN213067042U (en) | 2020-06-24 | 2020-06-24 | Continuous furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195107.3U CN213067042U (en) | 2020-06-24 | 2020-06-24 | Continuous furnace |
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| CN213067042U true CN213067042U (en) | 2021-04-27 |
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| CN202021195107.3U Active CN213067042U (en) | 2020-06-24 | 2020-06-24 | Continuous furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623626A (en) * | 2020-06-24 | 2020-09-04 | 苏州新长光热能科技有限公司 | Continuous furnace and waste heat utilization method thereof |
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2020
- 2020-06-24 CN CN202021195107.3U patent/CN213067042U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623626A (en) * | 2020-06-24 | 2020-09-04 | 苏州新长光热能科技有限公司 | Continuous furnace and waste heat utilization method thereof |
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