A rapid cooling device for electric heating furnace

Abstract

The utility model discloses a kind of electric heating furnace rapid cooling device, it is related to electric heating furnace field.The device includes cooling assembly, cooling assembly includes non-magnetic cooling arc pipe, fixed ring shell and airflow groove, non-magnetic cooling arc pipe array distribution is around electric heating furnace, shunt hole is opened in non-magnetic cooling arc pipe, shunt hole is used to pass into cooling liquid, non-magnetic cooling arc pipe is arc-shaped board and is attached to the surface of electric heating furnace, fixed ring shell is installed at the outer end of non-magnetic cooling arc pipe, fixed ring shell is used to fix non-magnetic cooling arc pipe, airflow groove is used to pass into cooling airflow, airflow groove is arranged between two groups of non-magnetic cooling arc pipe and fixed ring shell.The device makes electric heating furnace after use can be cooled in stages, according to different stages of furnace temperature, using different cooling medium combination, high-temperature section is pre-cooled with gas, middle-low temperature section gas-liquid mixed strong cooling, realize more efficient and uniform cooling, avoid because temperature difference is too large and lead to furnace body or workpiece damage.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace technology, specifically to a rapid cooling device for electric furnaces. Background Technology

[0002] In modern industrial production, electric furnaces are used as key heat treatment equipment in various processes such as metal smelting, material sintering, and heat treatment such as annealing, quenching, and tempering. After the electric furnace completes the preset high-temperature heating or treatment stage, the furnace chamber and the workpiece inside are usually at extremely high temperatures. In order to carry out subsequent process operations and remove the workpiece to prepare for the next production cycle, the furnace body must be cooled to a safe or suitable level.

[0003] Currently, natural cooling is the most common and simplest method. After heating stops, the furnace body cools down through its own heat dissipation and natural convection and thermal radiation with the surrounding air. This method requires no additional equipment and is low-cost. However, the cooling time of natural cooling significantly delays the entire production cycle, reducing equipment turnover and utilization, and failing to meet the demands of fast-paced production. Furthermore, during prolonged natural cooling, the furnace surface temperature remains high, posing a risk of accidental burns to operators without effective insulation or safety warnings. To address these issues, this invention provides a rapid cooling device for electric furnaces. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rapid cooling device for electric furnaces. It solves the problem that while natural cooling is currently the most common and simplest method, it relies on the furnace body's own heat dissipation and natural convection and thermal radiation with the surrounding air after heating stops. This method requires no additional equipment and is low-cost, but the cooling time of natural cooling significantly delays the entire production cycle, reducing equipment turnover and utilization, and failing to meet the demands of fast-paced production. Furthermore, during prolonged natural cooling, the furnace surface temperature remains high, posing a risk of accidental burns to operators without effective heat insulation or safety warnings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid cooling device for an electric furnace, comprising a cooling assembly, the cooling assembly including a non-magnetic cooling arc tube, a fixed ring shell, and an airflow groove. The non-magnetic cooling arc tube array is distributed around the electric furnace, and a diversion hole is opened inside the non-magnetic cooling arc tube for introducing coolant. The non-magnetic cooling arc tube is an arc-shaped plate attached to the surface of the electric furnace. A fixed ring shell is installed at the outer end of the non-magnetic cooling arc tube for fixing the non-magnetic cooling arc tube. The airflow groove is used to introduce cooling airflow and is disposed between two sets of non-magnetic cooling arc tubes and the fixed ring shell.

[0006] Preferably, the cooling component includes thermal insulation cotton, which is installed outside the fixed ring shell and is used to insulate against heat.

[0007] Preferably, the non-magnetic cooling arc tube is fixedly connected to both the upper and lower ends with connecting rings. Coolant passages and air passages are arrayed within the connecting rings. The coolant passages are used for the passage of coolant, and the air passages are used for the passage of cooling airflow.

[0008] Preferably, an input bottom ring is installed at the bottom end of the non-magnetic cooling arc tube. The input bottom ring is connected to a connecting ring. A coolant input pipe and an air pipe are fixedly connected to both ends of the input bottom ring, respectively. The coolant input pipe is used to connect to the coolant pipe, and the air pipe is used to connect to the blower.

[0009] Preferably, an output top ring is installed at the top of the non-magnetic cooling arc tube. The output top ring includes a coolant collection ring and an airflow collection ring. A coolant output pipe is installed at the top of the coolant collection ring and communicates with the coolant through hole. An airflow output pipe is installed at the top of the airflow collection ring and communicates with the airflow through hole.

[0010] This utility model discloses a rapid cooling device for electric furnaces, which has the following beneficial effects: This rapid cooling device for electric furnaces, by setting cooling components, enables the electric furnace to cool down in stages after use. Different combinations of cooling media are used according to different furnace temperature stages. The high-temperature stage is pre-cooled with gas, and the medium and low temperature stages are strongly cooled by gas-liquid mixing, achieving more efficient and uniform cooling and avoiding damage to the furnace body or workpiece due to excessive temperature difference. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0012] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the non-magnetic cooling arc tube of this utility model.

[0016] In the diagram: 1. Input bottom ring; 11. Coolant input pipe; 12. Air pipe; 2. Cooling component; 21. Non-magnetic cooling arc pipe; 211. Diverter hole; 22. Fixing ring shell; 23. Thermal insulation cotton; 24. Connecting ring; 241. Coolant through hole; 242. Airflow through hole; 25. Airflow groove; 3. Output top ring; 31. Coolant collection ring; 311. Coolant output pipe; 32. Airflow collection ring; 321. Airflow output pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] This application provides a rapid cooling device for electric furnaces, which solves the problem that natural cooling, as the most common and simplest method, relies on the furnace body's own heat dissipation and natural convection and thermal radiation with the surrounding air after heating stops. This method does not require additional equipment and has low cost, but the cooling time of natural cooling seriously delays the entire production cycle, reduces the turnover rate and utilization rate of equipment, and cannot meet the needs of fast-paced production. Furthermore, during the long natural cooling process, the surface temperature of the furnace body remains high, and without effective heat insulation protection or safety warnings, it is easy to cause accidental burns to operators.

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] This utility model discloses a rapid cooling device for an electric furnace.

[0021] Example 1

[0022] According to the appendix Figure 1-4As shown, the device includes a cooling assembly 2, which comprises a non-magnetic cooling arc tube 21, a fixing ring shell 22, and an airflow channel 25. The non-magnetic cooling arc tubes 21 are arrayed around the electric furnace. Each non-magnetic cooling arc tube 21 has a flow-diverting hole 211 for introducing coolant. The non-magnetic cooling arc tubes 21 are arc-shaped plates attached to the surface of the electric furnace. A fixing ring shell 22 is installed at the outer end of each non-magnetic cooling arc tube 21 to fix it. The airflow channel 25 is used to introduce cooling airflow and is arranged in two sets. Between the non-magnetic cooling arc tube 21 and the fixed ring shell 22, the cooling component 2 includes heat insulation cotton 23. The heat insulation cotton 23 is installed outside the fixed ring shell 22 and is used to insulate heat. When in use, the airflow is first introduced into the airflow channel 25, that is, the airflow passes between the tube shells of the two sets of non-magnetic cooling arc tubes 21 and pre-cools the electric furnace wall. Then, coolant is introduced into the non-magnetic cooling arc tube 21 for gas-liquid mixing and strong cooling. Through the design of the arc plate and the diversion hole 211, the contact area and cooling area between the non-magnetic cooling arc tube 21 and the furnace wall of the electric furnace are larger.

[0023] Example 2

[0024] Based on Example 1, according to Appendix Figure 1-4 As shown, the upper and lower ends of the non-magnetic cooling arc tube 21 are fixedly connected with connecting rings 24. Coolant passage holes 241 and air passage holes 242 are arranged in an array inside the connecting rings 24. Coolant passage holes 241 are used for passing coolant, and air passage holes 242 are used for passing cooling airflow.

[0025] The bottom end of the non-magnetic cooling arc tube 21 is equipped with an input bottom ring 1, which is connected to the connecting ring 24. The two ends of the input bottom ring 1 are respectively fixedly connected to a coolant input pipe 11 and an air pipe 12. The coolant input pipe 11 is used to connect to the coolant pipe, and the air pipe 12 is used to connect to the blower.

[0026] The top of the non-magnetic cooling arc tube 21 is equipped with an output top ring 3. The output top ring 3 includes a coolant collection ring 31 and an airflow collection ring 32. The top of the coolant collection ring 31 is equipped with a coolant output pipe 311, which communicates with the coolant through hole 241. The top of the airflow collection ring 32 is equipped with an airflow output pipe 321, which communicates with the airflow through hole 242.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid cooling device for an electric furnace, comprising a cooling component (2), characterized in that, The cooling component (2) includes: A non-magnetic cooling arc tube (21) is arranged in an array around the electric furnace. A diversion hole (211) is opened in the non-magnetic cooling arc tube (21) for passing in coolant. The non-magnetic cooling arc tube (21) is an arc-shaped plate attached to the surface of the electric furnace. Fixed ring shell (22), the outer end of the non-magnetic cooling arc tube (21) is equipped with a fixed ring shell (22), the fixed ring shell (22) is used to fix the non-magnetic cooling arc tube (21); Airflow channel (25) is used to introduce cooling airflow. The airflow channel (25) is disposed between two sets of non-magnetic cooling arc tubes (21) and fixed ring shell (22).

2. The rapid cooling device for an electric furnace according to claim 1, characterized in that: The cooling component (2) includes thermal insulation cotton (23), which is installed outside the fixed ring shell (22) and is used to insulate heat.

3. The rapid cooling device for an electric furnace according to claim 1, characterized in that: Both ends of the non-magnetic cooling arc tube (21) are fixedly connected with connecting rings (24).

4. The rapid cooling device for an electric furnace according to claim 3, characterized in that: The connecting ring (24) contains an array of: Coolant through hole (241), the coolant through hole (241) is used for the passage of coolant; Air passage (242) for passing cooling airflow.

5. The rapid cooling device for an electric furnace according to claim 4, characterized in that: The bottom end of the non-magnetic cooling arc tube (21) is equipped with an input bottom ring (1), which is connected to the connecting ring (24).

6. The rapid cooling device for an electric furnace according to claim 5, characterized in that: The input bottom ring (1) is fixedly connected to a coolant input pipe (11) and an air pipe (12) at both ends. The coolant input pipe (11) is used to connect to the coolant pipe, and the air pipe (12) is used to connect to the blower.

7. The rapid cooling device for an electric furnace according to claim 4, characterized in that: The top of the non-magnetic cooling arc tube (21) is equipped with an output top ring (3), which includes a coolant collection ring (31) and an airflow collection ring (32). The top of the coolant collection ring (31) is equipped with a coolant output pipe (311), which communicates with the coolant through hole (241). The top of the airflow collection ring (32) is equipped with an airflow output pipe (321), which communicates with the airflow through hole (242).

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