Cooling system for hot-rolled coil production

Abstract

The utility model discloses a cooling system for hot-rolled coil production, which comprises an underground ventilation interlayer arranged below a hot-rolled coil warehouse workshop, a plurality of hot-rolled coils are placed on the ground of the hot-rolled coil warehouse workshop, an air inlet chamber is arranged at the end part of the underground ventilation interlayer, an air inlet shutter is arranged at the end part of the hot-rolled coil warehouse workshop, and an air outlet shutter is arranged at the end part of the air inlet shutter. The small air inlet chamber is communicated with the outside through an air inlet shutter, the small air inlet chamber is not communicated with the hot-rolled coil warehouse workshop, and a primary fan is arranged at the joint of the underground ventilation interlayer and the small air inlet chamber. The underground ventilation interlayer is arranged below the hot-rolled coil warehouse workshop, outdoor air is introduced into the underground ventilation interlayer through the first-stage fan, and then the air in the underground ventilation interlayer is blown to the surface of a hot-rolled coil through the second-stage fan for air cooling, so that the temperature of the hot-rolled coil can be quickly reduced, and the cooling efficiency is improved; and the overall working efficiency is also improved, and the delivery date of an enterprise is shortened.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal processing technology, specifically a cooling system for hot-rolled coil production. Background Technology

[0002] In non-ferrous metal processing, after the hot-rolled coil or annealed coil process is completed, the temperature of the hot-rolled coil is usually maintained at approximately 350°C. Due to the excessively high temperature, subsequent processing steps cannot be performed immediately. Therefore, a dedicated area is needed to cool these coils to a suitable temperature; this area is usually called a coil warehouse or flat warehouse. Because these hot-rolled coils are heavy, bulky, and hot, the hot-rolled coil warehouse must have considerable space. Traditionally, natural cooling is used, but this method often requires a long time to lower the temperature to the required level, which not only reduces production efficiency but may also extend the company's delivery cycle. Therefore, we propose a cooling system for hot-rolled coil production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a cooling system for hot-rolled coil production, which can quickly reduce the temperature of hot-rolled coil, improve cooling efficiency, and improve overall work efficiency, which is conducive to shortening the delivery time of enterprises and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cooling system for hot-rolled coil production, comprising an underground ventilation interlayer located beneath a hot-rolled coil storage workshop. Several hot-rolled coils are placed on the ground of the hot-rolled coil storage workshop. An air inlet chamber is provided at the end of the underground ventilation interlayer, and an air inlet louver is provided at the end of the hot-rolled coil storage workshop. The air inlet chamber is connected to the outside through the air inlet louver, but is not connected to the hot-rolled coil storage workshop. A primary fan is provided at the connection between the underground ventilation interlayer and the air inlet chamber. Several air outlets connected to the hot-rolled coil storage workshop are evenly distributed on the top of the underground ventilation interlayer. A secondary fan is installed at each air outlet, and the hot-rolled coils are placed at the air outlets.

[0005] As a preferred technical solution of this utility model, a filter is provided at the connection between the underground ventilation interlayer and the air intake chamber, and the filter is located between the air intake louver and the primary fan.

[0006] As a preferred embodiment of this utility model, the air outlet is a strip-shaped air outlet, and the air outlets are symmetrically arranged at both ends of the hot-rolled coil.

[0007] As a preferred technical solution of this utility model, the hot-rolled coil warehouse floor is provided with return air inlets, which are located at both ends of the air outlet.

[0008] As a preferred technical solution of this utility model, the air inlet chamber, air inlet louvers and primary fan are each provided in two sets, and the two sets of air inlet chambers, air inlet louvers and primary fans are symmetrically arranged at both ends of the underground ventilation interlayer.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: an underground ventilation interlayer is opened under the hot-rolled coil warehouse workshop, and outdoor air is introduced into the underground ventilation interlayer through a primary fan. Then, a secondary fan blows the air in the underground ventilation interlayer onto the surface of the hot-rolled coil for air cooling. This can quickly reduce the temperature of the hot-rolled coil, improve the cooling efficiency, and improve the overall work efficiency, which is conducive to shortening the delivery time of enterprises. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention;

[0011] Figure 2 For the present invention Figure 2 AA section view;

[0012] Figure 3 For the present invention Figure 2 BB cross-sectional view.

[0013] In the diagram: 1. Air inlet louver, 2. Filter, 3. Primary fan, 4. Secondary fan, 5. Air outlet, 6. Hot-rolled coil, 7. Return air outlet, 8. Air inlet chamber, 9. Underground ventilation interlayer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a cooling system for hot-rolled coil production, including an underground ventilation interlayer 9 located beneath the hot-rolled coil storage workshop. Several hot-rolled coils 6 are placed on the floor of the hot-rolled coil storage workshop. An air inlet chamber 8 is located at one end of the underground ventilation interlayer 9, and an air inlet louver 1 is located at the other end of the hot-rolled coil storage workshop. The air inlet chamber 8 is connected to the outside through the air inlet louver 1, but is not connected to the hot-rolled coil storage workshop itself. The air inlet chamber 8 serves to buffer airflow. A primary fan 3 is installed at the connection between the underground ventilation interlayer 9 and the air inlet chamber 8. The top of the lower ventilation interlayer 9 is evenly provided with several air outlets 5 that connect to the hot-rolled coil warehouse workshop. A secondary fan 4 is installed at each air outlet 5. The hot-rolled coil 6 is placed at the air outlet 5. By opening an underground ventilation interlayer 9 under the hot-rolled coil warehouse workshop and introducing outdoor air into the underground ventilation interlayer 9 through a primary fan 3, and then blowing the air in the underground ventilation interlayer 9 onto the surface of the hot-rolled coil 6 for air cooling by the secondary fan 4, the temperature of the hot-rolled coil 6 can be reduced quickly, the cooling efficiency can be improved, the overall work efficiency can be improved, and the delivery time of the enterprise can be shortened.

[0016] The primary fan 3 and the secondary fan 4 used in this application are both axial flow fans commonly used in the prior art. They are both electrically connected to external control switches or controllers, and their specific structures, working principles and circuit connections are all well-known technologies, which will not be described in detail here.

[0017] Because the hot-rolled coil warehouse has a large amount of residual heat, the maximum ventilation volume required is also very large. When using traditional mechanical ventilation cooling, there are many primary and secondary air supply system devices required, which are difficult to arrange. However, with the underground ventilation interlayer 9 structure design of this application, the entire basement serves as both an equipment room and an air flow channel, making equipment maintenance and transportation very convenient, and improving the utilization rate of land resources.

[0018] In a preferred embodiment, a filter 2 is provided at the connection between the underground ventilation interlayer 9 and the air inlet chamber 8. The filter 2 is located between the air inlet louver 1 and the primary fan 3, which can filter the outdoor air, reduce dust and larger particles entering the underground ventilation interlayer 9, and improve the cleanliness of the underground ventilation interlayer 9 and the hot-rolled coil warehouse workshop, as well as the final quality of the hot-rolled coil 6.

[0019] In a preferred embodiment, the air outlets 5 are symmetrically arranged at both ends of the hot-rolled coil 6. Since the thermal resistance of the circular end face of the hot-rolled coil is relatively low, the air outlets 5 and the secondary fan 4 are symmetrically arranged at both ends of the hot-rolled coil 6. The air blown by the secondary fan 4 through the air outlets 5 is directed onto the circular end face of the hot-rolled coil 6. Due to the limitations of the hot-rolled coil storage layout, only two sides of the hot-rolled coil can have air outlets. Therefore, the air outlets are positioned close to the circular end face of the hot-rolled coil.

[0020] Preferably, the air outlet 5 is a strip-shaped air outlet, and the cold air delivered by the secondary fan 4 through the air outlet 5 is an attached jet, which can greatly increase the airflow velocity on the surface of the hot-rolled coil and improve the cooling rate of the hot-rolled coil. At the same time, the flat design of the air outlet can cover the circular end face of the aluminum coil with a smaller air volume, and the air heat exchange efficiency is greatly improved compared with other air outlets, effectively reducing the power consumption of the secondary air supply system.

[0021] In a preferred embodiment, return air inlets 7 are provided on the floor of the hot-rolled coil warehouse workshop. These inlets 7 are located at both ends of the air outlets 5. To improve the heat transfer coefficient of the hot-rolled coil surface, the surface air velocity needs to be increased. Although designs such as strip-shaped air outlets and attached jets are used to minimize the airflow of the secondary air fans, the total airflow of the secondary air supply system is still substantial. Due to the thermal conductivity of the hot-rolled coil itself, the air only undergoes one convective heat exchange with the surface of the hot-rolled coil, resulting in a relatively small temperature increase. When the outdoor air temperature is low, directly discharging this relatively cool air into the atmosphere would cause the primary air supply system to have an excessive airflow, wasting energy. Therefore, this application also provides return air inlets on the floor of the hot-rolled coil warehouse. By controlling parameters such as the workshop temperature and the negative pressure of the ventilation interlayer, the amount of workshop air entering the ventilation interlayer through the return air inlets is increased, thereby reducing the airflow of the primary air supply system and lowering the operating costs of the primary air fans.

[0022] Optionally, temperature detection points are installed inside the hot-rolled coil warehouse workshop, and pressure detection points are installed inside the underground ventilation interlayer structure. These are used to detect the temperature inside the hot-rolled coil warehouse workshop and the pressure inside the underground ventilation interlayer structure 9, respectively. Based on the temperature inside the hot-rolled coil warehouse workshop and the pressure inside the underground ventilation interlayer structure 9, the on / off status and power of the primary fan 3 and the secondary fan 4 can be flexibly adjusted.

[0023] Optionally, when the hot-rolled coil warehouse is large and there are many hot-rolled coils to be cooled, two sets of air inlet chambers 8, air inlet louvers 1, and primary fans 3 can be installed. The two sets of air inlet chambers 8, air inlet louvers 1, and primary fans 3 are symmetrically arranged at both ends of the underground ventilation interlayer 9, which can simultaneously supply air into the hot-rolled coil warehouse from both sides, thereby improving cooling efficiency.

[0024] Alternatively, to better dissipate waste heat from the workshop and ensure that heat does not accumulate and that heat removal is uniform and efficient, rooftop axial flow fans and temperature sensors can be installed on the workshop roof. Mechanical exhaust and temperature monitoring devices can be installed in designated areas to meet the needs of localized enhanced heat removal. When the roof temperature exceeds a certain set value, it indicates that waste heat inside the workshop cannot be efficiently removed. At this point, the rooftop axial flow fans should be activated to put the workshop into mechanical exhaust mode, thereby making the waste heat removal process more efficient and uniform.

[0025] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling system for hot-rolled coil production, comprising an underground ventilation mezzanine (9) located beneath a hot-rolled coil storage workshop, wherein a plurality of hot-rolled coils (6) are placed on the ground of the hot-rolled coil storage workshop, characterized in that: An air inlet chamber (8) is provided at the end of the underground ventilation interlayer (9), and an air inlet louver (1) is provided at the end of the hot-rolled coil warehouse. The air inlet chamber (8) is connected to the outside through the air inlet louver (1), but the air inlet chamber (8) is not connected to the hot-rolled coil warehouse. A primary fan (3) is provided at the connection between the underground ventilation interlayer (9) and the air inlet chamber (8). Several air outlets (5) connected to the hot-rolled coil warehouse are evenly provided on the top of the underground ventilation interlayer (9). A secondary fan (4) is installed at the air outlet (5), and the hot-rolled coil (6) is placed at the air outlet (5).

2. The cooling system for hot-rolled coil production according to claim 1, characterized in that: A filter (2) is provided at the connection between the underground ventilation interlayer (9) and the air intake chamber (8). The filter (2) is located between the air intake louver (1) and the primary fan (3).

3. The cooling system for hot-rolled coil production according to claim 1, characterized in that: The air outlet (5) is a strip-shaped air outlet, and the air outlet (5) is symmetrically arranged at both ends of the hot-rolled coil (6).

4. A cooling system for hot-rolled coil production according to claim 1, characterized in that: The hot-rolled coil warehouse floor has return air inlets (7) located at both ends of the air outlet (5).

5. A cooling system for hot-rolled coil production according to claim 1, characterized in that: The air intake chamber (8), air intake louvers (1) and primary fan (3) are each provided in two sets, and the two sets of air intake chambers (8), air intake louvers (1) and primary fans (3) are symmetrically arranged at both ends of the underground ventilation interlayer.

Images