A cooling water adapter for converters

Abstract

This utility model discloses a cooling water adapter for a converter, comprising an inner tube, one end of which is connected to the converter's drag ring trunnion via a first flange; the other end of the inner tube is fitted with a fixed outer tube; an annular groove is formed around the inner wall of the outer tube, and an annular groove is also formed around the outer wall of the inner tube, the two annular grooves being arranged opposite each other to form an annular cooling water channel; two inlet pipes are connected to the outside of the cooling water channel to the outside of the outer tube, and a cooling water pipe is connected to the inside of the cooling water channel to the inside of the inner tube, the cooling water pipe passing through the first flange to connect to the converter's cooling pipeline; multiple sealing grooves are spaced apart on the outer wall of the inner tube on both sides of the inlet pipe, stainless steel rings are fitted inside the sealing grooves, and O-rings are fitted outside the stainless steel rings. This design solves the problems of slow cooling water delivery and easy blockage in existing rotary joints, and the easy corrosion of the joint sealing grooves leading to leakage.

Description

Technical Field

[0001] This utility model belongs to the technical field of converter rotary joints, specifically relating to a cooling water adapter for converters. Background Technology

[0002] The rotary joints currently used at the connection between the converter body and the cooling water pipeline have numerous problems. Slow cooling water delivery is a key factor affecting cooling efficiency, limiting the flow rate of cooling water within the pipeline and making it difficult to quickly reach the parts requiring cooling. This results in heat not being dissipated in time, significantly weakening the cooling system's effectiveness. Simultaneously, the high chloride and oxygen content in the cooling water leads to pitting and crevice corrosion in the sealing groove area. The rust produced by corrosion not only damages the internal structure of the pipeline and joint, narrowing the pipeline's inner diameter and further hindering cooling water flow, but the porous rust layer also provides channels for corrosive media in the water, accelerating the corrosion process. The accumulation of corrosion products in the sealing groove exacerbates the wear of the sealing ring, causing leakage and failure. The average lifespan of the rotary joint is only 6-12 months. Frequent joint replacements not only increase maintenance costs but also lead to frequent equipment downtime, resulting in significant economic losses. Utility Model Content

[0003] The purpose of this invention is to provide a cooling water adapter for converters to solve the problems of slow cooling water delivery and easy blockage in existing rotary joints, and easy corrosion of the joint sealing groove leading to water leakage.

[0004] The present invention adopts the following technical solution: a cooling water adapter for a converter, comprising an inner tube, one end of which is connected to the trunnion of the converter via a first flange; and an outer tube fixed in position is fitted onto the other end of the inner tube. An annular groove is provided around the inner wall of the outer tube, and an annular groove is also provided around the outer wall of the inner tube. The two annular grooves are arranged opposite each other to form an annular cooling water channel. The cooling water channel is connected to the outside of the outer pipe by two inlet pipes, and the cooling water channel is connected to the inside of the inner pipe by one cooling water pipe. The cooling water pipe passes through the first flange and connects to the cooling pipeline of the converter. Multiple sealing channels are spaced apart on the outer wall of the inner tube, located on both sides of the inlet pipe. The sealing channels are annular structures surrounding the inner tube. The sealing channel has a U-shaped cross-section, and a stainless steel ring is fitted inside the sealing channel. The stainless steel ring also has a U-shaped cross-section, and an O-ring is fitted on the outside of the stainless steel ring. The inner tube is used to follow the converter's rotation; the water inlet pipe is used to introduce cooling water, which flows through the cooling water channel into the cooling water pipe, and then is transported to the converter's cooling pipeline.

[0005] Furthermore, two air intake pipes are connected through the inner and outer pipes. Multiple sealing channels are provided on the outer wall of the inner pipe, on both sides of the air intake pipes. The cross-section of the sealing channel is U-shaped, and a stainless steel ring is fitted inside the sealing channel. The stainless steel ring has a U-shaped cross-section, and an O-ring is fitted on the outside of the stainless steel ring.

[0006] Furthermore, a second flange is connected to the inlet pipe for connecting to the cooling water tank.

[0007] The beneficial effects of this utility model are: An annular groove, with the inner and outer pipes positioned opposite each other, forms an annular cooling water channel. Two inlet pipes supply water to the channel from multiple directions, ensuring even distribution of cooling water within the channel and preventing localized slow flow or cooling dead zones, thus improving overall cooling efficiency. This cooling water piping design rationally separates and orderly connects the cooling water channel with the converter cooling piping, facilitating cooling water circulation management and subsequent maintenance and repair, reducing equipment maintenance costs, extending equipment lifespan, and improving production continuity and stability. Simultaneously, a U-shaped stainless steel ring is fitted inside the sealed groove to form a complete corrosion-resistant protective layer, preventing direct contact between the cooling water and the base metal (carbon steel), completely solving the problem of pitting and crevice corrosion in the sealed groove area. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 A magnified view of a portion of the image.

[0009] Among them, 1. Inner pipe, 2. First flange, 3. Outer pipe, 4. Sealing channel, 5. Stainless steel ring, 6. Sealing ring, 7. Annular groove, 8. Cooling water pipe, 9. Water inlet pipe, 10. Air inlet pipe, 11. Second flange. Detailed Implementation

[0010] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0011] This utility model provides a cooling water adapter for a converter, such as... Figure 1-3The system includes an inner tube 1, one end of which is connected to the converter's drag ring trunnion via a first flange 2. The other end of the inner tube 1 is fitted with a fixed outer tube 3. An annular groove 7 is formed around the inner wall of the outer tube 3, and an annular groove 7 is also formed around the outer wall of the inner tube 1. The two annular grooves 7 are positioned opposite each other to form an annular cooling water channel. The annular grooves 7 of the inner tube 1 and outer tube 3 form an annular cooling water channel, which is supplied with water by two inlet pipes 9. This allows cooling water to enter the channel evenly from multiple directions, ensuring a balanced distribution of cooling water within the channel, preventing localized slow water flow or cooling dead zones, and improving overall cooling efficiency. Two inlet pipes 9 are installed to connect the cooling water channel to the outside of the outer pipe 3, and a cooling water pipe 8 is installed to connect the cooling water channel to the inside of the inner pipe 1. The cooling water pipe 8 passes through the first flange 2 and connects to the converter's cooling pipeline. When the cooling water channel supplies water to the converter's cooling pipeline, it first passes through the cooling water pipe 8 through the first flange 2 and then connects to the converter. This connection method not only ensures the sealing between the cooling water channel and the converter's cooling pipeline, effectively preventing cooling water leakage, but also, during the operation of the rotary furnace, the cooperation between the first flange 2, the inner pipe 1, and the outer pipe 3 ensures that when the inner pipe 1 rotates, the outer pipe 3 remains in a fixed position, and the cooling water channel supplies water stably. This ensures that the cooling water pipe 8 can continuously and stably deliver cooling water to the converter's cooling pipeline, guaranteeing the stable operation of the converter's cooling system. Multiple sealing channels 4 are spaced apart on the outer wall of the inner pipe 1, located on both sides of the inlet pipe 9. The sealing channels are annular structures surrounding the inner pipe 1; for example Figure 3 As shown, the sealing channel 4 has a U-shaped cross-section, and a stainless steel ring 5 is fitted inside the sealing channel 4. The stainless steel ring 5 has a U-shaped cross-section, which completely covers the sides and bottom of the sealing channel 4 to prevent rusting. An O-ring 6 is fitted on the outside of the stainless steel ring 5.

[0012] Multiple U-shaped sealing channels 4 are arranged around the outer wall of the inner pipe 1 and are distributed at intervals on both sides of the inlet pipe 9. This layout can block the leakage path of cooling water along the outer wall of the inner pipe in all directions. The labyrinth-like sealing structure formed by multiple sealing channels greatly enhances the sealing performance of the system and reduces the risk of cooling water leakage. A U-shaped stainless steel ring 5 is fitted inside the sealing channel 4. This stainless steel ring fits tightly against the sides and bottom of the sealing channel, forming a complete corrosion-resistant protective layer. Thanks to the excellent chloride ion resistance and oxidation resistance of stainless steel, direct contact between cooling water and the base metal (carbon steel) is fundamentally prevented, completely solving the problem of pitting and crevice corrosion in the sealing channel area. Furthermore, an O-ring 6 is fitted outside the stainless steel ring 5, working in conjunction with the stainless steel ring to further enhance sealing performance. The stainless steel ring also reduces wear from corrosion products on the sealing ring, significantly extending the service life of the rotary joint by more than two times. Simultaneously, it reduces frequent replacements and maintenance due to seal failure and corrosion problems, greatly lowering equipment maintenance costs.

[0013] The inner tube 1 is used to follow the rotation of the converter; the water inlet pipe 9 is used to introduce cooling water, which flows through the cooling water channel into the cooling water pipe 8, and then is transported to the cooling pipeline of the converter.

[0014] In some embodiments, two air inlet pipes 10 are also connected through the inner pipe 1 and the outer pipe 3. The inner end of the air inlet pipe is used to blow air into the converter. Multiple sealing channels 4 are provided on the outer wall of the inner pipe 1 on both sides of the air inlet pipes 10. The sealing channels 4 have a U-shaped cross-section and are fitted with stainless steel rings 5. The stainless steel rings 5 ​​have a U-shaped cross-section and completely cover the sides and bottom of the sealing channels 4 to prevent rusting. O-rings 6 are fitted on the outside of the stainless steel rings 5. Similarly, stainless steel rings 5 ​​with a U-shaped cross-section are fitted inside the sealing channels 4. The stainless steel rings fit tightly against the sides and bottom of the sealing channels to form a complete corrosion-resistant protective layer.

[0015] In some embodiments, a second flange 11 is connected to the inlet pipe 9 for connecting to the cooling water tank.

[0016] The method of using the cooling water adapter for converter according to this utility model is as follows: When the converter starts up and begins to rotate, the inner tube 1 connected to the converter rotates synchronously with the converter, while the outer tube 3 remains fixed. After the cooling system is started, cooling water is introduced through the inlet pipe 9 on the outer pipe 3 and enters the cooling water channel formed by the annular groove 7, which is arranged opposite to the inner pipe 1 and the outer pipe 3. The cooling water is evenly distributed and flows in the annular cooling water channel, making full contact with the inner pipe 1 for heat exchange; Subsequently, cooling water flows through the cooling water channel into the cooling water pipe 8, which connects to the inside of the inner pipe 1. The cooling water then passes through the first flange 2 and is finally delivered to the cooling pipeline of the converter to provide cooling for the converter.

[0017] Throughout the process, the inner tube 1 continuously follows the converter's rotation, while the outer tube 3 and the water inlet pipe 9 remain fixed. Through the cooperation of the stainless steel ring 5 and the O-ring 6 in the sealing channel 4, the sealing performance of the cooling water channel under rotation is effectively guaranteed, ensuring that the cooling water is stably delivered to the converter cooling system and achieving continuous cooling of the converter.

Claims

1. A cooling water swivel for a converter, characterized in that, It includes an inner tube (1), one end of which is connected to the trunnion of the converter via a first flange (2); the other end of the inner tube (1) is fitted with an outer tube (3) that is fixed in position. An annular groove (7) is provided around the inner wall of the outer tube (3), and an annular groove (7) is also provided around the outer wall of the inner tube (1). The two annular grooves (7) are arranged opposite each other to form an annular cooling water channel. The cooling water channel is provided with two inlet pipes (9) that connect to the outside of the outer pipe (3), and the cooling water channel is provided with a cooling water pipe (8) that connects to the inside of the inner pipe (1). The cooling water pipe (8) passes through the first flange (2) and connects to the cooling pipeline of the converter. Multiple sealing channels (4) are provided at intervals on the outer wall of the inner tube (1) and on both sides of the water inlet pipe (9). The sealing channels are annular structures surrounding the inner tube (1). The sealing channel (4) has a U-shaped cross-section, and a stainless steel ring (5) is fitted inside the sealing channel (4). The stainless steel ring (5) has a U-shaped cross-section, and an O-ring (6) is fitted on the outside of the stainless steel ring (5). The inner tube (1) is used to follow the rotation of the converter; the water inlet pipe (9) is used to introduce cooling water, which flows through the cooling water channel into the cooling water pipe (8), and then is transported to the cooling pipeline of the converter.

2. A cooling water swivel for a converter as claimed in claim 1, characterized in that Two air inlet pipes (10) are also connected through the inner pipe (1) and the outer pipe (3). Multiple sealing channels (4) are provided on the outer wall of the inner pipe (1) and on both sides of the air inlet pipe (10). The cross-section of the sealing channel (4) is U-shaped. A stainless steel ring (5) is fitted inside the sealing channel (4). The cross-section of the stainless steel ring (5) is U-shaped. An O-ring (6) is fitted on the outside of the stainless steel ring (5).

3. A cooling water swivel for a converter as claimed in claim 1, characterized in that The water inlet pipe (9) is connected to a second flange (11) for connecting to the cooling water tank.

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