High-efficiency cooling device for metallurgical steel casting

Abstract

The utility model relates to metallurgical technical field, concretely relates to a kind of high-efficiency cooling device for metallurgical steel casting pouring;It contains the cold iron for cooling, the rear end is connected with cooling block, both are connected, and inside is provided with multiple flow channels for the flow of heat exchange medium;Buffer block that can buffer temperature is respectively installed on both sides of cold iron;Multiple parts are simultaneously carried out medium circulation in the application using multiple separate inlet and outlet liquid pipelines, ensure that each part temperature uniformity, reduce the local temperature difference caused by heat exchange process, after pipeline separation, the flow channel with smaller diameter is separated, even if due to medium inclusion, lead to blockage, also do not affect other flow channel normal work;The application uses phase change material, absorbs heat in the initial stage of temperature rise, suppresses peak, prevents crack caused by rapid temperature fluctuation and reduces the instantaneous pressure fluctuation of medium.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, specifically to a high-efficiency cooling device for casting metallurgical steel parts. Background Technology

[0002] After casting, steel castings typically require an artificially created end region, where chills of appropriate size are placed around the casting to accelerate local solidification. However, the temperature of the chills rises rapidly upon contact with molten steel, reducing the temperature difference between the two and gradually decreasing the heat absorption rate, making it difficult to guarantee the cooling effect. For example, a high-efficiency cooling device for casting large steel castings, disclosed in Chinese Utility Model Patent No. CN209110158U, utilizes a circulating medium for heat conduction to improve cooling efficiency. However, the medium has limited heat absorption capacity, rapidly heating up upon entry and then slowing down heat absorption until it is discharged. Consequently, a temperature difference is created within the chill, with a low inlet temperature and a high outlet temperature. Utility Model Content

[0003] The purpose of this utility model is to provide a reasonably designed, high-efficiency cooling device for casting metallurgical steel parts, which can solve the above-mentioned defects and deficiencies of the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a chill for cooling, a cooling block connected to its rear end, the two being connected, and multiple flow channels for the flow of heat exchange medium are provided inside; buffer blocks for temperature buffering are installed on both sides of the chill.

[0005] Preferably, the cooling block has multiple sets of inlet manifolds and return manifolds arranged vertically, both with a seal at the bottom. The flow channels are U-shaped, with both ends connected to the inlet manifold and return manifold respectively, and multiple sets of each are distributed vertically.

[0006] Preferably, each of the inlet manifolds is connected to an inlet pipe at its top end, and each of the return manifolds is connected to a return pipe at its top end. Multiple inlet pipes are connected together via multi-way connectors and then connected to the media circulation equipment via pipes. The return pipes are also connected via multi-way connectors and then connected to the media circulation equipment via pipes.

[0007] Preferably, each of the buffer blocks is filled with phase change filler, and the buffer blocks are installed by threads.

[0008] Preferably, one-way valves are provided on the pipelines connecting the liquid inlet pipeline, the liquid return pipeline, and the medium circulation equipment.

[0009] Preferably, both the inlet manifold and the return manifold are covered with heat-insulating sleeves.

[0010] The beneficial effects of this utility model after adopting the above structure are: 1. This application uses multiple sets of separate inlet and outlet liquid pipelines to circulate the medium from multiple parts simultaneously, ensuring temperature uniformity in each part and reducing local temperature differences caused by the heat exchange process. At the same time, after the pipelines are separated, the smaller diameter flow channels are separated from each other, so even if the medium is mixed and causes blockage, it will not affect the normal operation of other flow channels.

[0011] 2. This application uses phase change materials, which absorb heat in the early stage of temperature rise, smooth out the peak value, prevent cracks caused by rapid temperature fluctuations, and reduce instantaneous pressure fluctuations of the medium. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a longitudinal sectional view of the present invention.

[0013] Explanation of reference numerals in the attached figures: 1. Chill; 2. Cooling block; 3. Liquid inlet pipe; 4. Liquid return pipe; 5. Check valve; 6. Liquid inlet main pipe; 7. Insulation and isolation sleeve; 8. Liquid return main pipe; 9. Flow channel; 10. Block; 11. Buffer block; 12. Phase change filler. 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] See Figures 1-3 As shown, it includes a chill 1 for cooling, a cooling block 2 connected to its rear end, the two are connected, and multiple flow channels 9 for the flow of heat exchange medium are provided inside; buffer blocks 11 that can buffer the temperature are installed on both sides of the chill 1. Inside the cooling block, there are multiple sets of inlet manifolds 6 and return manifolds 8 arranged vertically. Both have a plug 10 at the bottom. The flow channels 9 are all "U" shaped, with both ends connected to the inlet manifolds 6 and return manifolds 8 respectively, and multiple sets are distributed vertically. The top of each inlet manifold 6 is connected to an inlet pipe 3, and the top of each return manifold 8 is connected to a return pipe 4. Multiple inlet pipes 3 are connected by multi-port connectors and then connected to the medium circulation equipment through pipes. The return pipes 4 are also connected by multi-port connectors and then connected to the medium circulation equipment through pipes. The heat exchange medium is coolant. The medium circulation equipment is a high-temperature resistant storage tank and a circulation pump. The heat exchange is continuous. The storage tank and circulation pump are common equipment. The appropriate size and model can be selected according to the size of the chill 1 and the cooling temperature. Therefore, the specific shape will not be described in detail in the instruction manual and the attached drawings. Each buffer block 11 is equipped with a phase change filler 12. The buffer blocks 11 are all installed by threads. The phase change material begins to absorb heat when the chill 1 comes into contact with the high-temperature steel part. In the early stage of cooling, it slows down the temperature rise rate of the chill 1, smooths out the peak value, reduces the risk of cracking, and reduces the instantaneous temperature rise of the coolant, reducing the impact of pressure changes on the pipeline and the circulating pump. The threaded installation is adopted because the phase change material is difficult to maintain long-term stability and therefore needs to be replaced regularly. The thread is easy to install. On the other hand, since the temperature needs to rise and fall frequently, fixed installations such as welding are prone to damage at the connection due to the temperature difference between the buffer block 11 and the chill 1. The bolt installation can provide a certain buffer by increasing the gap when the buffer block 11 is drilled. Even if damage occurs, it will be on the bolt or the buffer block 11, and only the corresponding part needs to be replaced. One-way valves 5 are installed on the pipelines connecting the inlet pipeline 3 and the return pipeline 4 to the medium circulation equipment to ensure the stability of the medium flow direction; Both the inlet manifold 6 and the return manifold 8 are fitted with heat-insulating sleeves 7 to prevent the medium from generating direct heat circulation in the cooling block 2 and to improve heat exchange efficiency.

[0016] The installation, connection, or setting methods of the components not detailed above are all common mechanical methods, and the specific structure, model, and coefficient indicators of all their components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be elaborated further.

[0017] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A high-efficiency cooling device for casting metallurgical steel parts, comprising a chill (1) for cooling, characterized in that: Its rear end is connected to a cooling block (2), the two are connected, and multiple flow channels (9) for heat exchange medium flow are set inside; buffer blocks (11) that can buffer the temperature are installed on both sides of the chill (1).

2. The high-efficiency cooling device for casting metallurgical steel parts according to claim 1, characterized in that: Inside the cooling block, there are multiple sets of inlet manifolds (6) and return manifolds (8) arranged vertically. Both have a plug (10) at the bottom. The flow channels (9) are all "U" shaped, with both ends connected to the inlet manifolds (6) and return manifolds (8) respectively, and multiple sets are distributed vertically.

3. The high-efficiency cooling device for casting metallurgical steel parts according to claim 2, characterized in that: The top of each of the main inlet pipes (6) is connected to an inlet pipe (3), and the top of each of the main return pipes (8) is connected to a return pipe (4). Multiple inlet pipes (3) are connected by a multi-port connector and then connected to the medium circulation equipment through a pipe. The return pipes (4) are also connected by a multi-port connector and then connected to the medium circulation equipment through a pipe.

4. The high-efficiency cooling device for casting metallurgical steel parts according to claim 1, characterized in that: Each buffer block (11) is provided with a phase change filler (12), and each buffer block (11) is installed by thread.

5. The high-efficiency cooling device for casting metallurgical steel parts according to claim 3, characterized in that: One-way valves (5) are provided on the pipelines connecting the liquid inlet pipe (3), the liquid return pipe (4) and the medium circulation equipment.

6. The high-efficiency cooling device for casting metallurgical steel parts according to claim 2, characterized in that: Both the inlet manifold (6) and the return manifold (8) are covered with heat-insulating sleeves (7).

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