Gas heater device

Abstract

The utility model relates to the technical field of annealing furnace equipment, in particular to a gas heater device, which comprises a gas base, a flange and a burner sleeve inserted into a hearth of an annealing furnace, the bottom of the gas base is communicated with a fire outlet cylinder, one end of the fire outlet cylinder far away from the gas base is provided with a fire outlet, and the fire outlet cylinder is inserted into the burner sleeve. A flange is arranged at the bottom of the gas base and used for connecting the gas base to the annealing furnace and sleeves the outer wall of the top end of the burner sleeve, and the bottom face of the flange is connected with the furnace top of the annealing furnace. The gas burner has the advantages that when the gas burner is used, flames of the gas base are sprayed out of the fire outlet to burn in the burner sleeve, waste gas is prevented from making contact with a product, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of annealing furnace equipment, and in particular to a gas heater device. Background Technology

[0002] Gas heaters have important applications in the field of metal heat treatment, especially in annealing processes. Traditional gas heaters are mostly designed to be installed directly on the top or side of the annealing furnace. In practice, matching mounting holes and bolt fixing holes need to be made on the surface of the furnace body according to the equipment size, and the device is fixed by tightening the bolts.

[0003] However, direct connection between the heater and the annealing furnace leads to high surface temperature of the furnace body, which is inconvenient for daily maintenance and other work. Furthermore, the heater is directly inserted into the furnace for combustion heating, and the fuel is directly burned in the furnace with an open flame. The combustion exhaust gas and the heat-treated workpiece are in the same closed space, which causes the high-temperature exhaust gas to come into direct contact with the product. The fluctuation of the combustion process makes the temperature distribution inside the furnace uneven, which directly affects the stability of the material's microstructure and reduces product quality. Utility Model Content

[0004] In view of the above-mentioned technical problems, the existing traditional gas heaters burn directly in the furnace with an open flame, and the combustion exhaust gas and the heat-treated workpiece are in the same closed space, resulting in direct contact between the high-temperature exhaust gas and the product. The fluctuation of the combustion process causes uneven temperature distribution in the furnace, which directly affects the product quality. Therefore, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gas heater device, comprising a gas base, a flange, and a burner sleeve inserted into the furnace chamber of an annealing furnace. The bottom of the gas base is connected to a flame outlet, and a flame outlet is provided at the end of the flame outlet away from the gas base. The flame outlet is inserted into the burner sleeve. A flange is provided at the bottom of the gas base for connecting the gas base to the annealing furnace. The flange is fitted onto the outer wall of the top of the burner sleeve, and the bottom surface of the flange is connected to the top of the annealing furnace. In use, the flame from the gas base is ejected from the flame outlet and burns inside the burner sleeve, isolating the exhaust gas from contact with the product and improving product quality.

[0006] In a preferred embodiment of the gas heater device of this utility model, a gas inlet is provided on the top surface of the gas base, an air inlet is provided on one side of the gas base, and a smoke exhaust port is provided on the side away from the air inlet.

[0007] In a preferred embodiment of the gas heater device of this utility model, the flange is provided with no fewer than two symmetrical bolt holes for connection with the annealing furnace, and a heat sink is provided on both sides of each bolt hole on the bottom surface of the flange. In this utility model, the gas base is installed on the top of the annealing furnace through the flange, which makes the installation hole position more precise, prevents gas and heat leakage, and avoids direct contact between the gas base and the annealing furnace, reducing the surface temperature of the furnace body and facilitating maintenance.

[0008] In a preferred embodiment of the gas heater device of this utility model, an extended tube is provided between the bottom surface of the flange and the top of the annealing furnace, and a heat sink is connected to the extended tube and arranged around the circumference of the extended tube. In this utility model, by arranging the heat sink around the extended tube, the heat sink can not only dissipate heat at high temperatures for a long time, but also effectively act as a reinforcing rib.

[0009] In a preferred embodiment of the gas heater device of this utility model, a mounting plate for fixing to the top surface of the annealing furnace is provided on the upper end of the outer wall of the burner sleeve.

[0010] In a preferred embodiment of the gas heater device of this utility model, a silicon carbide ceramic is provided inside the burner sleeve tube for combustion by injecting flames into the outlet. The diameter of the silicon carbide ceramic near the bottom of the burner sleeve tube is smaller than the diameter near the outlet.

[0011] In a preferred embodiment of the gas heater device of this utility model, a plurality of silicon carbide ceramics are arranged inside the burner sleeve, connected sequentially from bottom to top. A rotating buckle is provided at the connection between the upper end and the lower end of the silicon carbide ceramic to connect the upper end and the lower end of the silicon carbide ceramic.

[0012] In a preferred embodiment of the gas heater device of this utility model, a cross-shaped support is provided between the bottom of the burner sleeve and the silicon carbide ceramic to allow for the flow of heating air.

[0013] The beneficial effects of this gas heater device are as follows: By setting a burner sleeve between the furnace chamber and the gas base of the annealing furnace, the flame is ejected from the outlet and burns inside the silicon carbide ceramic, which can isolate the exhaust gas from the product and improve the quality of the finished product. By setting a flange, the combustion base will not directly contact the furnace body, reducing the surface temperature of the furnace body, making it safer and easier to maintain. The heat sink is set on the flange, which can not only dissipate heat at high temperatures for a long time, but also effectively act as a reinforcing rib. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a schematic diagram of the gas heater device in this utility model.

[0016] Figure 2 This is a schematic diagram of the gas base structure of the gas heater device in this utility model.

[0017] Figure 3 This is a bottom view of the flange of the gas heater device in this utility model.

[0018] Figure 4 This is a schematic diagram of the extended tube structure of the gas heater device in this utility model. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example 1, referring to Figure 1-4This embodiment of the present invention provides a gas heater device. The device is connected to an annealing furnace via a flange 2. A flame outlet 11 is inserted into a burner sleeve 3, allowing the flame to burn within the burner sleeve 3, thus isolating the combustion exhaust gas from the workpiece and improving the quality of the finished product. The gas heater device includes a gas base 1, a flange 2, and a burner sleeve 3 inserted into the furnace chamber of the annealing furnace. The bottom of the gas base 1 is connected to the flame outlet 11. A flame outlet 12 is provided at the end of the flame outlet 11 furthest from the gas base 1. The flame outlet 11 is inserted into the burner sleeve 3. The bottom surface of the gas base 1 is connected to the burner sleeve 3. A flange 2 is provided at the bottom of the gas base 1 to connect the gas base 1 to the top surface of the annealing furnace. This device does not directly connect to the annealing furnace, and heat is not completely transferred to the surface of the annealing furnace. The flange 2 is fixedly sleeved on the outer wall of the top of the burner sleeve 3, and the bottom surface of the flange 2 is connected to the top of the annealing furnace.

[0023] The burner sleeve 3 is made of 310S stainless steel seamless tube, which is resistant to high temperature and does not deform during long-term combustion. The bottom end is sealed and welded. The flame is injected downward from the outlet 12 into the burner sleeve 3 for combustion. The heat is conducted to the 310S seamless tube and then increases the furnace temperature.

[0024] Specifically, a gas inlet 13 is provided on the top surface of the gas base 1, and an air inlet 14 is provided on one side of the gas base 1 to draw in air for combustion. An exhaust port 15 is provided on the side away from the air inlet 14 to discharge the exhaust gas generated by combustion.

[0025] Furthermore, the bottom surface of the flange 2 away from the gas base 1 is provided with no less than two symmetrical bolt holes 21 for connection with the annealing furnace. A heat sink 22 is provided on both sides of each bolt hole 21 on the bottom surface of the flange 2. The heat sink 22 not only increases the contact surface with air and improves the heat dissipation effect, but also effectively improves the strength of the flange 2 under long-term high-temperature use.

[0026] Furthermore, an extended tube 23 is provided between the bottom surface of flange 2 and the top of the annealing furnace. One side of the heat sink 22 is connected to the extended tube 23 and is arranged around the circumference of the extended tube 23. The heat sink 22 can not only effectively solve the heat dissipation problem of the extended tube 23 under long-term high temperature, but also effectively play the role of reinforcing rib, ensuring a double insurance mechanism under long-term high-temperature working conditions, and ensuring that the equipment can be installed and operate normally.

[0027] Specifically, an mounting plate 31 for fixing to the top surface of the annealing furnace is provided on the upper end of the outer wall of the burner sleeve 3.

[0028] Furthermore, a silicon carbide ceramic 5 is installed inside the burner sleeve 3, which is supplied with a flame through the outlet 12 for combustion. The diameter of the silicon carbide ceramic 5 at the bottom of the burner sleeve 3 is smaller than the diameter at the outlet 12, that is, the silicon carbide ceramic 5 is smaller at the bottom and larger at the top. The outside of the silicon carbide ceramic 5 can allow normal airflow, ensuring normal heat radiation and allowing exhaust gas to be circulated and discharged.

[0029] Among them, a backflow gap is formed between the silicon carbide ceramic 5 and the burner sleeve 3 to allow the exhaust gas to flow upward into the gas base 1 and be discharged from the flue 15.

[0030] Specifically, multiple silicon carbide ceramics 5 are arranged inside the burner sleeve 3, connected sequentially from bottom to top. A rotating buckle 51 is provided at the connection between the upper and lower ends of the silicon carbide ceramics 5 to connect the upper and lower ends of adjacent silicon carbide ceramics 5, making maintenance and replacement convenient.

[0031] Furthermore, a cross-shaped support seat 4 is provided between the bottom of the burner sleeve 3 and the silicon carbide ceramic 5 to allow for the flow of heating air.

[0032] Both the burner tube 11 and the silicon carbide ceramic 5 operate in a sealed environment within the burner sleeve 3. The flame is sprayed downwards from the burner port 12 and burns. The airflow flows out from the bottom support 4 and flows back upwards along the outside of the silicon carbide ceramic 5. The heat is conducted to the burner sleeve 3, which then raises the furnace temperature. The combustion exhaust gas returns to the upper gas base 1 through the return gap and is discharged from the exhaust port 15 and circulated to the outside. The exhaust gas never comes into contact with the workpiece, thus improving the quality of the finished product.

[0033] Unless otherwise specified in the above description, all parts are prior art or can be implemented using existing technology. Furthermore, the specific embodiments described in this utility model are merely preferred embodiments and are not intended to limit the scope of this utility model. That is, all equivalent changes and modifications made within the scope of this utility model patent should be considered within the technical scope of this utility model.

Claims

1. A gas heater apparatus, characterised in that: The application relates to a gas burner for an annealing furnace, which comprises a gas base (1), a flange (2) and a burner sleeve (3) inserted into the furnace chamber of the annealing furnace, the bottom of the gas base (1) is communicated with an outflow cylinder (11), the outflow cylinder (11) is provided with an outflow port (12) at the end far from the gas base (1), the outflow cylinder (11) is inserted into the burner sleeve (3), the bottom of the gas base (1) is provided with the flange (2) for connecting the gas base (1) to the annealing furnace, the flange (2) is sleeved on the outer wall of the top end of the burner sleeve (3), and the bottom surface of the flange (2) is connected to the top of the annealing furnace.

2. The gas heater apparatus of claim 1, wherein: The top surface of the gas base (1) is provided with a gas inlet (13), one side of the gas base (1) is provided with an air inlet (14), and the side far from the air inlet (14) is provided with a smoke outlet (15).

3. The gas heater apparatus as claimed in claim 1, wherein: The flange (2) is provided with not less than two symmetrical bolt holes (21) for being connected to the annealing furnace, and the bottom surface of the flange (2) is provided with a heat dissipation fin (22) on each side of each bolt hole (21).

4. A gas heater apparatus as claimed in claim 3, wherein: The bottom surface of the flange (2) is provided with an extended pipe body (23) between the flange (2) and the top of the annealing furnace, and one side of the heat dissipation fin (22) is connected to the extended pipe body (23) and surrounds the circumference of the extended pipe body (23).

5. The gas heater apparatus as claimed in claim 1, wherein: The outer wall of the burner sleeve (3) is provided with a mounting plate (31) at the upper end for being fixed to the top surface of the annealing furnace.

6. A gas heater apparatus as claimed in claim 5, wherein: The burner sleeve (3) is provided with silicon carbide ceramics (5) in the pipe for the outflow port (12) to spray flame for combustion, the diameter of the silicon carbide ceramics (5) close to the bottom end of the burner sleeve (3) is smaller than the diameter of the silicon carbide ceramics (5) close to the outflow port (12).

7. A gas heater apparatus as claimed in claim 6, wherein: The burner sleeve (3) is provided with a plurality of silicon carbide ceramics (5) connected in sequence from bottom to top, the upper end of the silicon carbide ceramics (5) is connected to the lower end of the silicon carbide ceramics (5) through a rotating buckle (51).

8. The gas heater apparatus as claimed in claim 1, wherein: The bottom of the burner sleeve (3) is provided with a cross-shaped support seat (4) between the bottom of the burner sleeve (3) and the silicon carbide ceramics (5) for heat flow circulation.

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