CN213067053U - Gas radiation heating device and have its continuous furnace - Google Patents

Abstract

The application discloses gas radiant heating device and have its continuous furnace, this gas radiant heating device is applied to the work piece heating of continuous furnace, the continuous furnace has the furnace body, the work piece with hang the mode that gos forward set up in the furnace chamber of furnace body, gas radiant heating device symmetry set up in the both sides of work piece, gas radiant heating device includes: the burner assembly is arranged on the furnace body and used for generating high-temperature flue gas; the smoke collecting pipe is arranged in the furnace body and is connected with an external smoke collecting device; 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 this way, the gas radiation heating device in this application can realize the heating of the work piece of no naked light, and has the even advantage of heating.

Description

Gas radiation heating device and have its continuous furnace

Technical Field

The application relates to the technical field of industrial furnaces, in particular to a gas radiation heating device and a continuous furnace with the same.

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 heating device is a core part of the continuous furnace, the conventional continuous furnace adopts electric heating or gas heating, and when the conventional continuous furnace adopts open flame heating, the temperature of each part of a workpiece is increased to have deviation, so that the heating is not uniform, and the heat treatment performance of the furnace is influenced. Therefore, there is a need to develop a gas radiation heating apparatus and a continuous furnace having the same, which uses indirect heating to satisfy the heating performance and atmosphere requirement of the workpiece in the furnace.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of open fire heating in the technology, the application provides the gas radiation heating device and the continuous furnace with the same, which can realize heating without open fire and have the advantage of uniform heating.

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

the utility model provides a gas radiant heating device, is applied to the work piece heating of continuous stove, continuous stove has the furnace body, the work piece with hang the mode that advances set up in the furnace chamber of furnace body, gas radiant heating device symmetry set up in the both sides of work piece, gas radiant heating device includes: the burner assembly is arranged on the furnace body and used for generating high-temperature flue gas; the smoke collecting pipe is arranged in the furnace body and is connected with an external smoke collecting device; 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 a 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 the present application, the radiant tube includes a radiant tube body, and the hot end and the cold end connected to both end portions of the radiant tube body, wherein the radiant tube body is disposed along a hanging direction of the workpiece.

In an embodiment of this application, the nozzle subassembly is located the furnace body outside, including can dismantle set up in nozzle combustion chamber on the furnace body outer wall, set up in the nozzle brick of nozzle combustion chamber, with the gas nozzle that the nozzle brick is connected, wherein, the spout orientation of nozzle combustion chamber the furnace body sets up, be provided with on the furnace body with the spout is relative runs through the mouth, so that the hot junction with the nozzle combustion chamber intercommunication.

In an embodiment of the application, one end of the flue gas collecting pipe extends into the furnace body and is connected with the cold junction, and the other end is exposed out of the outside of the furnace body.

In an embodiment of the present application, the burner assembly is located below the flue gas collection pipe.

In order to solve the above technical problem, another solution proposed by the present application is:

a continuous furnace comprising: the heating furnace comprises a rack and a furnace body arranged on the rack, wherein the furnace body is provided with the fuel gas radiation heating device.

In an embodiment of the present application, flow guide walls extending along a suspension direction of the workpiece are symmetrically disposed in the furnace chamber, the flow guide walls divide the furnace chamber into a central area and a peripheral area which are communicated with each other and distributed from inside to outside, the workpiece is located in the central area, and the radiant tube is located in the peripheral area; the bottom of the furnace body is also provided with a circulating fan, and under the action of the circulating fan, the airflow in the peripheral area has a flowing state from bottom to top, and the airflow in the central area has a moving state from top to bottom.

In an embodiment of the present application, a first air guiding structure is formed at the top of the inner wall of the furnace body, and is used for changing the flow direction of the air flow so that the air flow in the peripheral area enters the central area; and a second air guide structure is formed at the top of the flow guide wall so as to enable the air flow in the peripheral area to enter the central area.

Compared with the prior art, the application has the beneficial effects that:

the application provides a gas radiant heating device and have its continuous furnace, it can follow the even radiation of the direction of hanging of work piece to the furnace chamber with the high temperature flue gas that the nozzle subassembly produced through a plurality of radiant tubes, and then the work piece can be followed the furnace chamber internal absorption heat and risen temperature, can realize not having the naked light heating, has the even advantage of being heated.

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 the construction of a continuous furnace as proposed in the present application;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

in the figure, 100-gas radiation heating device; 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; 140-a support; 200-continuous furnace; 210-a furnace body; 211-furnace chamber; 2111-a first air guiding structure; 212-guide walls; 2121-a second air guiding structure; 220-a frame; 230-a drive assembly; 240-a connector; 250-a circulating fan; 300-workpiece.

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.

The continuous furnace in the prior art adopts the open fire heating mode to heat the workpiece, and the open fire heating mode has the following defects: the temperature rise of each part of the workpiece varies, and the heating is not uniform. In view of the above, the present application provides a gas radiation heating apparatus 100, please refer to fig. 1 to 3, fig. 1 is a schematic structural diagram of a continuous furnace proposed in the present application, fig. 2 is a schematic structural diagram of a cross section along a-a direction in fig. 1, fig. 3 is a schematic structural diagram of a cross section along a-B direction in fig. 1, and an open arrow in fig. 1 represents a flow direction of a gas flow. In the present application, the gas-fired radiant heating apparatus 100 is applied to heating the workpiece 300 of the continuous furnace 200, the continuous furnace 200 has a furnace body 210, the workpiece 300 is arranged in a furnace chamber 211 of the furnace body 210 in a hanging and advancing manner, and the gas-fired radiant heating apparatus 100 is symmetrically arranged at both sides of the workpiece 300. Specifically, the gas fired radiant heating apparatus 100 includes: the burner assembly 110 is arranged on the wall of the furnace body 210 and used for generating high-temperature flue gas; a flue gas collecting pipe 120, which is arranged on the wall of the furnace body 210 and connected with an external flue gas collecting device (shown in the figure); 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.

Through the above manner, the plurality of radiant tubes 130 in the present application can 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, so that the workpiece 300 can absorb heat from the furnace chamber 211 to heat up, and therefore, the workpiece 300 has the advantage of being heated uniformly.

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. Therefore, the workpiece 300 can be heated uniformly and continuously in the forward running process, and therefore, the advantage of uniform heating is achieved.

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.

Specifically, the radiant tube 130 includes a radiant tube body disposed along a hanging direction of the workpiece 300, and a hot end 131 and a cold end 132 connected to both ends of the radiant tube body. This enables the workpiece 300 to be heated uniformly. The hot end 131 and the cold end 132 of the radiant tube 130 are detachably arranged in the furnace body 210 through bolts, nuts and washers respectively. The inner wall of the furnace body 210 is provided with a supporting piece 140 for supporting the hot end 131 and the cold end 132; the upper and lower sides of the hot end 131 are respectively provided with the supporting members 140, and the upper and lower sides of the cold end 132 are respectively provided with the supporting members 140, so that the mounting structure has the advantages of stability and reliability.

Specifically, the burner assembly 110 is located below the flue gas collection tube 120. The purpose of this setting is: so as to facilitate the upward movement of the high-temperature flue gas generated by the burner assembly 110.

Further, one end of the flue gas collecting pipe 120 extends into the furnace body 210 to be connected with the cold end 132, and the other end is exposed outside the furnace body 210.

Further, burner assembly 110 is located the furnace body 210 outside, including dismantling burner combustion chamber 111 that sets up on the furnace body 210 outer wall, set up in burner block 112 of burner combustion chamber 111, the gas burner 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.

It is to be understood that the gas fired radiant heating apparatus 100 of the present application can be applied to various usage scenarios, which are exemplified below.

The gas fired radiant heating apparatus 100 in the present application may be applied to a continuous furnace 200, wherein the continuous furnace 200 includes: the heating furnace comprises a rack 220 and a furnace body 210 arranged on the rack 220, wherein the furnace body 210 is provided with the gas radiation heating device.

The flow guide walls 212 extending along the hanging direction of the workpiece 300 are symmetrically arranged in the furnace chamber 211, the flow guide walls 212 divide the furnace chamber 211 into a central area and a peripheral area which are communicated with each other and distributed from inside to outside, the workpiece 300 is located in the central area, and the radiant tubes 130 are located in the peripheral area. The central and peripheral areas communicate at the top and bottom of the cavity 211. The bottom of the furnace body 210 is further provided with a circulating fan 250, under the action of the circulating fan 250, the airflow in the peripheral area has a flowing state from bottom to top, and the airflow in the central area has a moving state from top to bottom, so that the heat in the peripheral area can enter the central area, and the airflow in the central area enters the peripheral area again through the circulating fan 250, so as to reciprocate, and the airflow in the furnace chamber 211 circulates.

Further, a first air guide structure 2111 is formed at the top of the inner wall of the furnace body 210, and is used for changing the flow direction of the air flow so that the air flow in the peripheral area enters the central area; the top of the flow guiding wall 212 is formed with a second air guiding structure 2121, so that the air flow in the peripheral area enters the central area. Specifically, the first air guiding structure 2111 may be a round angle, an arc surface, or an inclined straight plane; the second wind guiding structure 2121 is an arc-shaped plate. The second wind guiding structure 2121 is used to assist the first wind guiding structure 2111, so that the airflow can better enter the central area from the peripheral area.

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 (10)

1. A gas radiation heating device (100) applied to heating workpieces (300) of a continuous furnace (200), wherein the continuous furnace (200) is provided with a furnace body (210), the workpieces (300) are arranged in a furnace chamber (211) of the furnace body (210) in a suspension advancing manner, the gas radiation heating device (100) is symmetrically arranged at two sides of the workpieces (300), and the gas radiation heating device (100) is characterized by comprising:

the burner assembly (110) is arranged on the furnace body (210) and is used for generating high-temperature flue gas;

the smoke collecting pipe (120) is arranged on the furnace body (210) and is connected with an external smoke collecting device; 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).

2. The gas fired radiant heating device as in claim 1,

the plurality of radiant tubes (130) are arranged side by side at equal intervals along the running direction of the workpiece (300).

3. The gas fired radiant heating device as in claim 1,

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).

4. The gas fired radiant heating device as in claim 3,

the radiant tube (130) comprises a radiant tube body, and the hot end (131) and the cold end (132) which are connected to two ends of the radiant tube body, wherein the radiant tube body is arranged along the suspension direction of the workpiece (300).

5. The gas fired radiant heating device as in claim 3,

burner assembly (110) is located the furnace body (210) outside, including can dismantle set up in burner combustion chamber (111) on furnace body (210) outer wall, set up in burner block (112) of burner combustion chamber (111), with gas nozzle (113) that burner block (112) are connected, wherein, the spout orientation of burner combustion chamber (111) furnace body (210) set up, be provided with on furnace body (210) with the relative through-hole of spout, so that hot junction (131) with burner combustion chamber (111) intercommunication.

6. The gas fired radiant heating device as in claim 3,

one end of the flue gas collecting pipe (120) extends into the furnace body (210) to be connected with the cold end (132), and the other end is exposed out of the furnace body (210).

7. The gas fired radiant heating device as in claim 1,

the burner assembly (110) is located below the flue gas collection pipe (120).

8. A continuous furnace, comprising: a rack (220), the furnace body (210) being arranged on the rack (220), the furnace body (210) being provided with a gas fired radiant heating device as claimed in any one of claims 1 to 7.

9. Continuous furnace according to claim 8,

flow guide walls (212) extending along the suspension direction of the workpiece (300) are symmetrically arranged in the furnace chamber (211), the flow guide walls (212) divide the furnace chamber (211) into a central area and a peripheral area which are communicated with each other and distributed from inside to outside, the workpiece (300) is positioned in the central area, and the radiant tubes (130) are positioned in the peripheral area;

the bottom of the furnace body (210) is further provided with a circulating fan (250), and under the action of the circulating fan (250), the airflow in the peripheral area has a flowing state from bottom to top, and the airflow in the central area has a moving state from top to bottom.

10. Continuous furnace according to claim 9,

a first air guide structure (2111) is formed at the top of the inner wall of the furnace body (210) and used for changing the flowing direction of the airflow so that the airflow in the peripheral area enters the central area;

and a second air guide structure (2121) is formed at the top of the flow guide wall (212) so that the air flow in the peripheral area enters the central area.

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