Heat dissipation device for furnace pit of segregation furnace

Abstract

The invention discloses a heat dissipation device for a furnace pit of a segregation furnace, and relates to the technical field of refined aluminum segregation furnaces, the heat dissipation device comprises a heat dissipation shell and a cooling mechanism, the heat dissipation shell can be placed in the furnace pit, and the outer wall of the heat dissipation shell can exchange heat with the inner wall of the furnace pit; the cooling mechanism is arranged in the heat dissipation shell and can cool the heat dissipation shell. The heat dissipation area can be effectively enlarged, the heat dissipation efficiency is improved, the heat dissipation time is shortened, maintenance personnel can conveniently enter a furnace pit for maintenance as soon as possible, the production efficiency is improved, and the operation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of aluminum segregation furnace technology, and in particular to a heat dissipation device for the furnace pit of a segregation furnace. Background Technology

[0002] In the high-purity aluminum segregation process, the continuous operation of the segregation furnace is crucial to ensuring production efficiency. When the heating system of the segregation furnace malfunctions, the entire production line will stop operating, requiring maintenance personnel to enter the furnace pit 01 for emergency repairs. However, due to the high temperature inside the furnace pit 01 (reaching approximately 700°C), the furnace pit 01 needs to be cooled down before maintenance personnel can enter.

[0003] Currently, there are two main methods for heat dissipation in the furnace pit 01 of the segregation furnace: one is natural cooling, and the other is to place the air outlet of the air blowing pipe 02 near the bottom of the furnace pit 01 for heat dissipation by blowing air (e.g., Figure 1 As shown in the figure, the squares on the side wall of the furnace pit 01 represent refractory bricks. However, both of these heat dissipation methods have obvious drawbacks: natural cooling is extremely slow and cannot meet the needs of emergency maintenance; while using the air blower 02 to cool down can accelerate heat dissipation to some extent, the air blower 02 only dissipates heat to a limited area at the bottom of the furnace pit 01, and its heat dissipation area is small and its heat exchange efficiency is low. Therefore, a waiting time of up to 36 hours is still required before maintenance (that is, it takes up to 36 hours to cool the furnace pit 01 to about 40°C), which not only seriously affects production efficiency but also increases the company's operating costs. Summary of the Invention

[0004] The purpose of this invention is to provide a heat dissipation device for a segregation furnace pit, which solves the problems existing in the above-mentioned related technologies. It can effectively expand the heat dissipation area, improve heat dissipation efficiency, shorten heat dissipation time, facilitate maintenance personnel to enter the pit for maintenance as soon as possible, and help improve production efficiency and reduce operating costs.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] The present invention provides a heat dissipation device for a segregation furnace pit, comprising a heat dissipation shell and a cooling mechanism. The heat dissipation shell can be placed inside the pit, and the outer wall of the heat dissipation shell can exchange heat with the inner wall of the pit. The cooling mechanism is disposed inside the heat dissipation shell and can cool the heat dissipation shell.

[0007] Preferably, the heat dissipation shell includes a cylindrical shell and a top cover, the outer diameter of the cylindrical shell matches the inner diameter of the furnace pit, and the top cover is detachably installed on the cylindrical shell.

[0008] Preferably, the cooling mechanism includes a cooling water pipe disposed inside the cylindrical shell. The upper cover is provided with an inlet and an outlet. The inlet end of the cooling water pipe is connected to the inlet of the upper cover, and the outlet end of the cooling water pipe is connected to the outlet of the upper cover, so that cooling water circulation is formed inside the cooling water pipe, thereby cooling the cylindrical shell.

[0009] Preferably, the cooling water pipe is axially coiled inside the cylindrical housing.

[0010] Preferably, the heat dissipation shell further includes a heat dissipation cylinder, which is fixed inside the cylindrical shell and coaxially arranged with the cylindrical shell, and the cooling water pipe is coiled between the heat dissipation cylinder and the cylindrical shell.

[0011] Preferably, the cylindrical shell, the upper cover, the heat dissipation cylinder, and the cooling water pipe are all made of copper.

[0012] Preferably, the upper cover is further provided with a nitrogen replacement port and an exhaust port. The nitrogen replacement port is used to introduce nitrogen gas to replace the nitrogen gas inside the cylindrical shell.

[0013] Preferably, the upper cover is also provided with a vacuum extraction port, which is used to evacuate the inside of the cylindrical shell.

[0014] Preferably, the upper cover is also provided with a pressure gauge port, and a pressure gauge is installed in the pressure gauge port.

[0015] Preferably, the upper cover is also provided with a lifting hole.

[0016] Compared with related technologies, the present invention achieves the following technical effects:

[0017] The segregation furnace pit heat dissipation device provided by the present invention includes a heat dissipation shell and a cooling mechanism. In use, the heat dissipation shell is placed in the furnace pit, and heat exchange occurs between the outer wall of the heat dissipation shell and the inner wall of the furnace pit. This fully utilizes the entire surface area of ​​the furnace pit to achieve heat exchange, effectively expanding the heat dissipation area. At the same time, the heat dissipation shell is cooled by the cooling mechanism, which improves heat dissipation efficiency, shortens heat dissipation time, and facilitates maintenance personnel to enter the furnace pit for maintenance as soon as possible. This is beneficial to improving production efficiency and reducing operating costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the existing method of using air ducts to dissipate heat from the furnace pit of a segregation furnace;

[0020] Figure 2 A schematic diagram of the heat dissipation device for the segregation furnace pit provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the cylindrical shell and heat sink provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the top cover and cooling water pipe provided in an embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the heat dissipation device for the segregation furnace pit provided in an embodiment of the present invention.

[0024] In the diagram: 01-furnace pit, 02-air duct, 1-cylindrical shell, 2-top cover, 201-water inlet, 202-water outlet, 203-nitrogen replacement port, 204-exhaust port, 205-vacuum extraction port, 206-pressure gauge, 207-lifting hole, 3-heat sink, 4-cooling water pipe. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The purpose of this invention is to provide a heat dissipation device for a segregation furnace pit, which solves the problems existing in related technologies. It can effectively expand the heat dissipation area, improve heat dissipation efficiency, shorten heat dissipation time, facilitate maintenance personnel to enter the pit for maintenance as soon as possible, and help improve production efficiency and reduce operating costs.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 2-5 As shown, this embodiment provides a heat dissipation device for a segregation furnace pit, including a heat dissipation shell and a cooling mechanism. The heat dissipation shell can be placed inside the pit 01, and the outer wall of the heat dissipation shell can exchange heat with the inner wall of the pit 01. The cooling mechanism is disposed inside the heat dissipation shell and can cool the heat dissipation shell.

[0029] In this embodiment, as Figure 3As shown, the heat dissipation shell includes a copper cylindrical shell 1, a top cover 2, and a heat dissipation cylinder 3. The outer diameter of the cylindrical shell 1 matches the inner diameter of the furnace pit 01. When the cylindrical shell 1 is placed in the furnace pit 01, the side walls and bottom walls of the cylindrical shell 1 can be close to the side walls and bottom walls of the furnace pit 01, respectively, effectively expanding the heat dissipation area. Furthermore, the high thermal conductivity of copper accelerates the conduction and dissipation of heat. The top cover 2 is detachably installed on the cylindrical shell 1, and the heat dissipation cylinder 3 is fixed inside the cylindrical shell 1 and coaxially arranged with the cylindrical shell 1. The design of the heat dissipation cylinder 3 increases the heat dissipation area. Specifically, in this embodiment, the top of the cylindrical shell 1 is provided with an annular edge. The top cover 2 is connected to the annular edge of the cylindrical shell 1 by multiple bolts and fasteners arranged along its circumference. A sealing gasket is also provided between the top cover 2 and the cylindrical shell 1 to prevent heat leakage inside the cylindrical shell 1.

[0030] In this embodiment, the cooling mechanism includes a copper cooling water pipe 4, which is disposed inside the cylindrical shell 1. The upper cover 2 is provided with an inlet 201 and an outlet 202. The inlet end of the cooling water pipe 4 is connected to the inlet 201 of the upper cover 2, and the outlet end of the cooling water pipe 4 is connected to the outlet 202 of the upper cover 2, so that cooling water circulation is formed in the cooling water pipe 4, thereby cooling the cylindrical shell 1. Specifically, after cooling water is introduced into the cooling water pipe 4 through the cooling water tank, the heat transferred by the cylindrical shell 1 can be quickly absorbed, and the heat can be carried away from the furnace pit 01 area through the circulation of cooling water, thereby significantly improving the heat dissipation efficiency.

[0031] Furthermore, the cooling water pipe 4 is axially coiled inside the cylindrical housing 1 and located between the heat dissipation cylinder 3 and the cylindrical housing 1; specifically, as shown... Figures 4-5 As shown, in this embodiment, the inlet end of the cooling water pipe 4 is located at the upper part of the cylindrical shell 1 and is connected to the inlet 201 of the upper cover 2. The outlet end of the cooling water pipe 4 passes through the middle part of the cylindrical shell 1 from bottom to top and is connected to the outlet 202 of the upper cover 2.

[0032] It should be noted that the heat dissipation shell was chosen as the heat dissipation structure in this device because if the cooling water pipe 4 were placed directly inside the furnace pit 01, water vapor in the air would condense rapidly, making the inside of the furnace pit 01 damp or even causing water accumulation. This would damage the heating system, threaten the safety of the aluminum segregation production line, and potentially lead to serious consequences such as an aluminum explosion. To avoid these risks, this device uses a heat dissipation shell for large-area heat conduction, combined with the internal cooling water pipe 4 for heat exchange. This effectively reduces heat dissipation time, improves heat dissipation efficiency, and ensures the safety of the production environment, thereby guaranteeing the stable operation of the aluminum segregation production line and improving overall production efficiency.

[0033] In this embodiment, the upper cover 2 is also provided with a nitrogen replacement port 203 and an exhaust port 204. The nitrogen replacement port 203 is used to introduce nitrogen to replace the nitrogen inside the cylindrical shell 1, so as to form a dry and stable environment inside the cylindrical shell 1 and avoid water vapor condensation causing corrosion. Furthermore, since the thermal conductivity of nitrogen is about 0.0259 W / (m·K) and the thermal conductivity of air is about 0.0257 W / (m·K), which are close, filling the cylindrical shell 1 with nitrogen will not affect the heat conduction effect.

[0034] In this embodiment, the upper cover 2 is also provided with a vacuum extraction port 205, which is used to evacuate the inside of the cylindrical shell 1. In use, the inside of the cylindrical shell 1 is first evacuated through the vacuum extraction port 205, and then nitrogen is introduced into the cylindrical shell 1 through the nitrogen replacement port 203 to facilitate the formation of a nitrogen atmosphere inside the cylindrical shell 1.

[0035] In this embodiment, a pressure gauge port is also provided on the upper cover 2, and a pressure gauge 206 is installed on the pressure gauge port to facilitate the staff to monitor the working status inside the heat dissipation shell and ensure the safe and stable operation of the device.

[0036] In this embodiment, the upper cover 2 is also provided with a hoisting hole 207 to facilitate hoisting using an overhead crane.

[0037] The usage process of the segregation furnace pit heat dissipation device provided in this embodiment is as follows:

[0038] First, the top cover 2 is installed on the cylindrical shell 1 using bolts and fasteners to ensure a tight seal between them. Then, the heat sink is placed in the furnace pit 01 of the segregation furnace to be repaired using an overhead crane. Next, the heat sink is evacuated using a vacuum gauge and vacuum extraction valve until it reaches an ionized state. After that, the vacuum extraction valve is closed, and nitrogen is introduced into the heat sink. When the pressure gauge 206 shows that the pressure inside the heat sink reaches -0.5 bar, the nitrogen replacement port 203 is closed to ensure a stable internal environment for the heat sink. The cooling water tank is then turned on, and cooling water is introduced into the cooling water pipe 4 to form a cooling water circulation. During this process, the heat sink dissipates heat efficiently through heat exchange, ensuring both safety and improving production efficiency. Once the furnace pit 01 has cooled to a suitable temperature, the cooling water circulation is stopped, and the heat sink is pulled out again using the overhead crane to complete the entire cooling process.

[0039] This device has the following advantages:

[0040] First, the heat dissipation area is expanded and the heat dissipation efficiency is improved: This device exchanges heat between the outer wall of the heat dissipation shell and the inner wall of the furnace pit 01, making full use of the entire surface area of ​​the furnace pit 01 to achieve heat exchange, effectively expanding the heat dissipation area. At the same time, the heat dissipation shell is cooled by the cooling water pipe 4, and the heat in the furnace pit 01 can be quickly removed by the cooling water circulation, shortening the heat dissipation time, improving production efficiency, and enabling the furnace pit 01 of the segregation furnace to recover to a temperature that is accessible to maintenance personnel more quickly.

[0041] Secondly, it reduces water vapor condensation and avoids dampness and water accumulation in the furnace pit 01 and the heat dissipation shell: This device uses a heat dissipation shell that matches the size of the furnace pit 01 as the heat dissipation structure, which avoids placing the cooling water pipe 4 directly in the furnace pit 01, thus preventing water vapor in the air from condensing and causing water accumulation in the furnace pit 01. Furthermore, by replacing the heat dissipation shell with nitrogen, a dry and stable environment is formed inside the heat dissipation shell, reducing the possibility of water vapor condensing inside the heat dissipation shell.

[0042] Third, it enhances the safety of the segregation furnace production line: Water vapor condensation is a safety hazard in the aluminum segregation production line because the condensed water droplets may come into contact with the high-temperature molten aluminum, causing the molten aluminum to explode; this device reduces this risk by reducing water vapor condensation, improves the safety of the production environment, reduces potential safety accidents, and protects the lives of workers.

[0043] Fourth, the structure is compact and easy to install and maintain: The upper cover 2 and the cylindrical shell 1 of this device are assembled by bolt connection, which makes the overall structure compact and easy to disassemble; such design facilitates installation and maintenance, and reduces the difficulty and cost of operation.

[0044] In summary, this invention, through the design of the heat dissipation shell, fully utilizes the entire surface area of ​​the furnace pit 01 for heat exchange, effectively expanding the heat dissipation area. At the same time, through the design of the cooling mechanism inside the heat dissipation shell, the heat in the furnace pit 01 is quickly absorbed and dispersed, improving heat dissipation efficiency and shortening heat dissipation time. This solves the problems of low heat dissipation efficiency and excessively long waiting time, helps to improve the continuous operation capability of the segregation furnace production line, thereby increasing production efficiency and reducing operating costs, and providing a more efficient, safe, and reliable heat dissipation solution for aluminum processing and related industries.

[0045] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A heat dissipation device for a segregation furnace pit, characterized in that: It includes a heat dissipation shell and a cooling mechanism. The heat dissipation shell can be placed inside the furnace pit, and the outer wall of the heat dissipation shell can exchange heat with the inner wall of the furnace pit. The cooling mechanism is disposed inside the heat dissipation shell and can cool the heat dissipation shell.

2. The heat dissipation device for the segregation furnace pit according to claim 1, characterized in that: The heat dissipation shell includes a cylindrical shell and a top cover. The outer diameter of the cylindrical shell matches the inner diameter of the furnace pit, and the top cover is detachably installed on the cylindrical shell.

3. The heat dissipation device for the segregation furnace pit according to claim 2, characterized in that: The cooling mechanism includes a cooling water pipe disposed inside the cylindrical shell. The upper cover is provided with an inlet and an outlet. The inlet end of the cooling water pipe is connected to the inlet end of the upper cover, and the outlet end of the cooling water pipe is connected to the outlet end of the upper cover, so that cooling water circulation is formed inside the cooling water pipe, thereby cooling the cylindrical shell.

4. The heat dissipation device for the segregation furnace pit according to claim 3, characterized in that: The cooling water pipe is coiled axially inside the cylindrical shell.

5. The heat dissipation device for the segregation furnace pit according to claim 4, characterized in that: The heat dissipation shell also includes a heat dissipation cylinder, which is fixed inside the cylindrical shell and coaxially arranged with the cylindrical shell, and the cooling water pipe is coiled between the heat dissipation cylinder and the cylindrical shell.

6. The heat dissipation device for the segregation furnace pit according to claim 5, characterized in that: The cylindrical shell, the top cover, the heat dissipation cylinder, and the cooling water pipe are all made of copper.

7. The heat dissipation device for the segregation furnace pit according to claim 2, characterized in that: The upper cover is also provided with a nitrogen replacement port and an exhaust port. The nitrogen replacement port is used to introduce nitrogen gas to replace the nitrogen gas inside the cylindrical shell.

8. The heat dissipation device for the segregation furnace pit according to claim 2, characterized in that: The upper cover is also provided with a vacuum extraction port, which is used to evacuate the inside of the cylindrical shell.

9. The heat dissipation device for the segregation furnace pit according to claim 2, characterized in that: The upper cover is also provided with a pressure gauge port, and a pressure gauge is installed in the pressure gauge port.

10. The heat dissipation device for the segregation furnace pit according to claim 2, characterized in that: The top cover is also provided with lifting holes.

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