An internal bellows pressure ring for an electric arc furnace

Abstract

The utility model relates to a metallurgical industry ore -heating furnace holds system equipment technical field, concretely for a kind of built-in bellows pressure ring for ore -heating furnace, including two through pin shaft splicing split type half ring, multiple bellows telescopic cylinders are evenly distributed along the split type half ring inner wall circumference, further including the vertical baffle in split type half ring inside, the outside circulation cooling mechanism and internal circulation cooling mechanism that are sequentially arranged from outside to inside are formed in the inside of split type half ring by vertical baffle;Multiple bellows telescopic cylinders are all arranged in internal circulation cooling mechanism, and one end of bellows telescopic cylinder is connected with vertical baffle and penetrates;The pressure ring adopts double circulation cooling design, and improves heat resistance;It can reduce the deformation, damage and water leakage of component caused by high temperature, prolong service life, reduce maintenance cost, while maintaining the stable contact pressure of electrode and copper tile, guaranteeing ore -heating furnace operation, improving production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for holding systems of submerged arc furnaces in the metallurgical industry, specifically a built-in bellows pressure ring for submerged arc furnaces. Background Technology

[0002] Built-in bellows pressure rings for submerged arc furnaces have wide applications, primarily in these furnaces. Submerged arc furnaces are important industrial equipment, commonly used for the reduction and smelting of ores, carbonaceous reducing agents, solvents, and other raw materials to produce ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and ferrosilicon-manganese alloys. The bellows pressure ring plays a crucial role in submerged arc furnaces. In clamping devices employing conductive copper structures, it is a vital component of the electrode holder system. Its working principle involves using an internal bellows, hydraulically controlled to extend and retract, thereby clamping or releasing the corresponding copper pads, ensuring tight contact between the copper pads and the electrodes.

[0003] Existing pressure rings for submerged arc furnaces have the following problems in high-temperature operating environments: a single cooling structure cannot achieve efficient heat dissipation in all directions, leading to deformation, damage, or leakage in the outer area of ​​the split semi-ring due to localized high temperatures; the expansion and contraction performance of the bellows expansion cylinder decreases under continuous high temperatures, easily causing fluctuations in the contact pressure between the electrode and the copper tile; long-term high temperatures and thermal stress accelerate component aging, increase equipment maintenance frequency and costs, and consequently affect the continuous and stable operation of the submerged arc furnace, leading to fluctuations in production efficiency and product quality. Utility Model Content

[0004] The purpose of this invention is to provide a built-in bellows pressure ring for a submerged arc furnace, which solves the problems of existing submerged arc furnace pressure rings, such as insufficient heat dissipation due to a single cooling structure, resulting in high-temperature deformation and water leakage of the split semi-ring; decreased stability of bellows expansion and contraction due to high temperature, causing fluctuations in electrode contact pressure; accelerated component aging due to high temperature, increasing maintenance costs, and affecting the operation, production efficiency and quality of the submerged arc furnace.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a built-in corrugated pressure ring for a submerged arc furnace, comprising two split semi-rings joined by pins, and a plurality of corrugated telescopic cylinders evenly distributed circumferentially along the inner wall of the split semi-rings. The two split semi-rings are joined to form a closed ring structure. The telescopic direction of the corrugated telescopic cylinders is radially arranged along the split semi-rings, and their free ends are used to press against the copper tiles of the submerged arc furnace. It also includes a vertical partition plate disposed inside the split semi-rings. The interior of the split semi-rings is formed by the vertical partition plate into an outer circulating cooling mechanism and an inner circulating cooling mechanism arranged sequentially from the outside to the inside. The plurality of corrugated telescopic cylinders are arranged in the inner circulating cooling mechanism, and one end of each corrugated telescopic cylinder is connected through the vertical partition plate.

[0006] Furthermore, the outer circulation cooling mechanism includes an outer cooling chamber, an outer water inlet pipe connected to the upper side of the split semi-ring and communicating with the outer cooling chamber, and an outer water outlet pipe.

[0007] Further, the outer cooling chamber includes a vertical plate located on the outer side of the split semi-ring and connected to the outer side of the vertical partition; multiple partition plates located on one side of the vertical plate and one side of the split semi-ring and arranged longitudinally at intervals; two connecting plates located on the inner side of the vertical partition and connected to the inner wall of the split semi-ring; and connecting holes located on the vertical partition and on both sides of the two connecting plates; an outer water inlet / outlet channel is formed between the opposite sides of the two connecting plates and the inner wall of the split semi-ring and the vertical partition; one end of the outer water inlet pipe and the outer water outlet pipe are respectively connected to the upper side of the outer water inlet / outlet channel; the multiple partition plates... A meandering cooling channel is formed between the partitions, and one side of the meandering cooling channel is connected to one of the connecting holes; the partition is connected to the closed end of the bellows telescopic cylinder at the position corresponding to the bellows telescopic cylinder; the vertical plate and one side of the split semi-ring form a vertical channel, the vertical channel is connected to one end of the meandering cooling channel, and one side of the vertical channel is connected to another connecting hole; the cooling medium input by the outer water inlet pipe enters the vertical channel and meandering cooling channel through the outer water inlet and outlet channels and the connecting hole, flows along the serpentine path formed by the partition, and then flows back to the outer water outlet pipe through the other connecting hole.

[0008] Furthermore, the internal circulation cooling mechanism includes a transverse partition located inside the vertical partition and connected to the inner side of the split semi-ring; a guide plate located at one end of the transverse partition and connected to the inner side of the vertical partition and the inner side of the split semi-ring; a first baffle located on the upper side of the transverse partition and connected to the inner side of the vertical partition and the inner side of the split semi-ring; a second baffle located on the upper side of the split semi-ring and connected to the outer side of one of the bellows telescopic cylinders; an inner water inlet pipe and an inner water outlet pipe connected to the upper side of the split semi-ring and communicating with the outer cooling chamber; and multiple baffles located on the upper side of the transverse partition and spaced apart; the multiple baffles and the multiple bellows telescopic cylinders are arranged alternately. The inner side of the split semi-ring and the inner side of the vertical partition are connected by a horizontal partition to form an upper cavity and a lower cavity from top to bottom. The two ends of the lower cavity extend to the opposite ends of the top wall of the cavity and are connected to the upper cavity. The inner water inlet pipe and the inner water outlet pipe are both connected to the upper cavity. The inner water inlet pipe is located between the first baffle and the free end of the split semi-ring. The inner water outlet pipe is located between the first baffle and the second baffle. The cooling medium input by the inner water inlet pipe is guided by the first baffle to flow through the lower cavity, then flows back to the upper cavity, is guided by the baffle to flow through the gap of the bellows telescopic cylinder, enters the gap between the first baffle and the second baffle, and is discharged from the inner water outlet pipe.

[0009] Furthermore, it also includes a sleeve for threading a bottom ring water pipe or a hanger, and the sleeve and the corrugated pipe telescopic cylinder are arranged at intervals. The outer wall of the sleeve is provided with a fixing plate, and the two fixing plates are connected to the inner wall of the split half ring and the vertical partition. The sleeve passes through the transverse partition and its two ends pass through the upper and lower end faces of the split half ring.

[0010] Furthermore, the two ends of the split semi-ring are respectively connected to a single trunnion and a double trunnion, the single trunnion has a second connecting cylinder passing through its interior, and the double trunnion has a first connecting cylinder passing through its interior.

[0011] Furthermore, the split semi-ring, vertical partition, single trunnion sleeve, double trunnion sleeve, partition plate, vertical plate, horizontal partition, guide plate, first baffle, second baffle, sleeve, first connecting cylinder, second connecting cylinder, and fixing plate are all made of stainless steel; the inner wall of the corrugated tube telescopic cylinder is coated with a high-temperature resistant ceramic coating.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The built-in bellows pressure ring of this utility model divides the interior of the split semi-ring into an outer circulating cooling mechanism and an inner circulating cooling mechanism through a vertical partition. The outer circulating cooling mechanism specifically cools the outer area of ​​the split semi-ring and the closed end of the bellows telescopic cylinder, while the inner circulating cooling mechanism ensures that the bellows telescopic cylinder is continuously cooled in high-temperature environments, improving the heat resistance of the equipment under harsh operating conditions. This design can reduce problems such as component deformation, damage, and water leakage caused by high temperatures in the high-temperature environment of the submerged arc furnace, extend the service life of the equipment, and reduce maintenance costs. At the same time, it helps to maintain a stable contact pressure between the electrode and the copper tile, ensuring the continuous and stable operation of the submerged arc furnace, thereby improving production efficiency and product quality, and providing a solid guarantee for the safe operation of the submerged arc furnace.

[0014] 2. In this utility model, one end of the corrugated tube telescopic cylinder is connected to the vertical partition through a through connection, which not only ensures the stability of the corrugated tube telescopic cylinder during the telescopic movement, but also provides a good heat exchange interface for the cooling medium, so that the cooling medium can exchange heat with the corrugated tube telescopic cylinder more efficiently, thereby further enhancing the cooling effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the built-in bellows pressure ring for a submerged arc furnace according to the present invention.

[0016] Figure 2 For the present utility model Figure 1 Schematic diagram of the cross section at point AA;

[0017] Figure 3 This is a schematic diagram of the split semi-ring structure of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section at the MM point;

[0019] Figure 5 This is a cross-sectional schematic diagram of the internal circulation cooling mechanism of this utility model;

[0020] Figure 6 This is a cross-sectional schematic diagram of the external circulation cooling mechanism of this utility model.

[0021] In the diagram: 1. Split-type semi-ring; 2. Sleeve; 3. Corrugated telescopic cylinder; 4. Vertical partition; 5. Double trunnion sleeve; 6. Single trunnion sleeve; 7. Divider plate; 8. Vertical plate; 9. Outer water inlet pipe; 10. Outer water outlet pipe; 11. Horizontal partition; 12. Guide plate; 13. Lower cavity; 14. Upper cavity; 15. Inner water outlet pipe; 16. Inner water inlet pipe; 17. First baffle; 18. Baffle plate; 19. First connecting cylinder; 20. Second baffle; 21. Connecting hole; 22. Connecting plate; 23. Second connecting cylinder; 24. Fixing plate. Detailed Implementation

[0022] Please see Figure 1-6 An internal corrugated pressure ring for a submerged arc furnace includes two split-type semi-rings 1 connected by pins, and multiple corrugated telescopic cylinders 3 evenly distributed circumferentially along the inner wall of the split-type semi-rings 1. The two split-type semi-rings 1 are spliced ​​to form a closed ring structure. The telescopic direction of the corrugated telescopic cylinders 3 is set radially along the split-type semi-rings 1, and their free ends are used to press against the copper tiles of the submerged arc furnace. It also includes a vertical partition 4 fixedly connected inside the split-type semi-rings 1. The interior of the split-type semi-rings 1 is formed by the vertical partition 4, which forms an outer circulating cooling mechanism and an inner circulating cooling mechanism arranged sequentially from the outside to the inside. The multiple corrugated telescopic cylinders 3 are arranged in the inner circulating cooling mechanism, and one end of the corrugated telescopic cylinder 3 is connected through the vertical partition 4.

[0023] The outer circulation cooling mechanism includes an outer cooling chamber, an outer water inlet pipe 9 connected to the upper side of the split semi-ring 1 and communicating with the outer cooling chamber, and an outer water outlet pipe 10.

[0024] The outer cooling chamber includes a vertical plate 8 fixedly connected to the outer side of the split semi-ring 1 and connected to the outer side of the vertical partition 4; multiple partition plates 7 welded to one side of the vertical plate 8 and one side of the split semi-ring 1 and arranged longitudinally at intervals; two connecting plates 22 located on the inner side of the vertical partition 4 and connected to the inner wall of the split semi-ring 1; and connecting holes 21 located on the vertical partition 4 and on both sides of the two connecting plates 22 respectively; the opposite sides of the two connecting plates 22 form an outer water inlet / outlet channel between the inner wall of the split semi-ring 1 and the vertical partition 4, and one end of the outer water inlet pipe 9 and the outer water outlet pipe 10 are respectively connected to the upper side of the outer water inlet / outlet channel; multiple A meandering cooling channel is formed between the partition plates 7, and one side of the meandering cooling channel is connected to one of the connecting holes 21; the partition plate 7 is connected to the closed end of the bellows telescopic cylinder 3 at the position corresponding to the bellows telescopic cylinder 3; the vertical plate 8 and one side of the split semi-ring 1 form a vertical channel, which is connected to one end of the meandering cooling channel, and one side of the vertical channel is connected to another connecting hole 21; the cooling medium input by the outer water inlet pipe 9 enters the vertical channel and meandering cooling channel through the outer water inlet and outlet channels and the connecting hole 21, flows along the serpentine path formed by the partition plates 7, and then flows back to the outer water outlet pipe 10 through another connecting hole 21. The meandering cooling channel extends the medium flow distance and improves the heat exchange time; the connection between the partition plate 7 and the bellows expansion cylinder 3 enhances the structural stability and ensures direct heat exchange between the cooling medium and the heat-generating components; the cooperation between the connecting hole 21 and the inlet and outlet water channels controls the medium flow direction, so that the outer area of ​​the split semi-ring 1 and the closed end of the bellows expansion cylinder 3 are fully cooled, avoiding the impact of high temperature on the performance of the components, and further ensuring the long-term stable operation of the pressure ring.

[0025] The internal circulation cooling mechanism includes a transverse partition 11 fixedly connected to the inner side of the vertical partition 4 and connected to the inner side of the split semi-ring 1; a guide plate 12 fixedly connected to one end of the transverse partition 11 and connected to the inner side of the vertical partition 4 and the inner side of the split semi-ring 1; a first baffle 17 welded to the upper side of the transverse partition 11 and connected to the inner side of the vertical partition 4 and the inner side of the split semi-ring 1; a second baffle 20 welded to the upper side of the split semi-ring 1 and connected to the outer side of one of the bellows telescopic cylinders 3; an inner water inlet pipe 16 and an inner water outlet pipe 15 connected to the upper side of the split semi-ring 1 and communicating with the outer cooling chamber; and multiple baffles 18 welded to the upper side of the transverse partition 11 and spaced apart; the multiple baffles 18 and multiple bellows telescopic cylinders 3 are arranged alternately. The inner side of the split semi-ring 1 and the inner side of the vertical partition 4 are connected by a horizontal partition 11 to form an upper cavity 14 and a lower cavity 13 from top to bottom. The two ends of the lower cavity 13 extend to the opposite ends of the top wall of the cavity and are connected to the upper cavity 14. The inner water inlet pipe 16 and the inner water outlet pipe 15 are both connected to the upper cavity 14. The inner water inlet pipe 16 is located between the first baffle 17 and the free end of the split semi-ring 1. The inner water outlet pipe 15 is located between the first baffle 17 and the second baffle 20. The cooling medium input by the inner water inlet pipe 16 is guided by the first baffle 17 to flow through the lower cavity 13, and then flows back to the upper cavity 14. After being guided by the baffle 18 through the gap of the corrugated tube telescopic cylinder 3, it enters the space between the first baffle 17 and the second baffle 20 and is discharged from the inner water outlet pipe 15. The alternating baffles 18 and bellows telescopic cylinder 3 extend the flow path of the cooling medium and enhance the heat exchange efficiency; the interconnected design of the upper cavity 14 and the lower cavity 13 ensures full coverage of the cooling medium and avoids local overheating.

[0026] It also includes a sleeve 2 for threading the bottom ring water pipe or hanger, with the sleeve 2 and the corrugated pipe expansion cylinder 3 arranged at intervals. The outer wall of the sleeve 2 is fixedly connected to a fixing plate 24, and the two fixing plates 24 are welded and fixed to the inner wall of the split half-ring 1 and the vertical partition 4. The sleeve 2 passes through the transverse partition 11 and its two ends pass through the upper and lower end faces of the split half-ring 1. Through the welding and fixing of the fixing plate 24 and its passage through the transverse partition 11, the sleeve 2 forms a stable support inside the split half-ring 1, ensuring that the bottom ring water pipe or hanger inserted therein will not shift due to equipment vibration. The interval arrangement avoids contact friction between the sleeve 2 and the corrugated pipe expansion cylinder 3 during operation, preventing component wear. The structure that passes through the upper and lower end faces of the split half-ring 1 provides a threading channel for the bottom ring water pipe or hanger, which does not affect the overall structural strength of the pressure ring and can meet the installation requirements of other auxiliary components of the submerged arc furnace, thereby improving the overall integration and operational stability of the equipment.

[0027] The two ends of the split-type semi-ring 1 are respectively connected to a single-eared sleeve 6 and a double-eared sleeve 5. A second connecting cylinder 23 is inserted through the inside of the single-eared sleeve 6, and a first connecting cylinder 19 is inserted through the inside of the double-eared sleeve 5. In specific connection, the single-eared sleeve 6 of one split-type semi-ring 1 is inserted between the double-eared sleeves 5 of another adjacent split-type semi-ring 1, so that the second connecting cylinder 23 and the first connecting cylinder 19 are coaxially aligned. Then, a pin passes through the two connecting cylinders to complete the hinge connection. Through the nested fit of the double-eared sleeve 5 and the single-eared sleeve 6, combined with the hinge structure of the pin and the connecting cylinder, the two split-type semi-rings 1 form a detachable closed ring structure, which facilitates the installation and disassembly of the equipment and can adapt to the slight vibrations and thermal expansion and contraction during the operation of the electric arc furnace through the hinge method.

[0028] The split-type semi-ring 1, vertical partition 4, single trunnion sleeve 6, double trunnion sleeve 5, partition plate 7, vertical plate 8, horizontal partition 11, guide plate 12, first baffle 17, second baffle 20, sleeve 2, first connecting cylinder 19, second connecting cylinder 23, and fixing plate 24 are all made of stainless steel. With the help of the high temperature resistance and corrosion resistance of stainless steel, they can withstand the high temperature baking and erosion of potential corrosive media in the working environment of the electric arc furnace, thus extending the service life of each component. The inner wall of the bellows telescopic cylinder 3 is coated with a high temperature resistant ceramic coating, which enhances its tolerance to high temperature environment, avoids performance degradation due to long-term exposure to high temperature environment, and ensures the stable and reliable bellows telescopic adjustment function.

[0029] Working process and principle: Two split semi-rings 1 are spliced ​​together by a pin to form a closed ring structure. During operation, the bellows inside the bellows expansion cylinder 3 expands and contracts radially, and its free end presses against the copper tile of the electric arc furnace to achieve pressure regulation. The cooling system is divided into inner and outer double circulation: In the outer circulation, the cooling medium enters the outer inlet and outlet water channels through the outer water inlet pipe 9, flows into the vertical channel and the meandering cooling flow channel through the connecting hole 21 in sequence, and exchanges heat with the closed end of the bellows expansion cylinder 3 when flowing along the path formed by the partition plate 7. Finally, it flows back to the outer outlet water pipe 10 through another connecting hole 21. In the inner circulation, the cooling medium enters the upper cavity 14 from the inner water inlet pipe 16, is guided by the first baffle 17 to flow into the lower cavity 13, and then flows back to the upper cavity 14. Under the guidance of the baffle plate 18, it flows through the gap of the bellows expansion cylinder 3 for sufficient heat exchange and is discharged from the inner outlet water pipe 15 between the first baffle 17 and the second baffle 20. The sleeve 2 is used to pass through the bottom ring water pipe or the hanger, and is fixed by the fixing plate 24 to avoid interference with the bellows telescopic cylinder 3; the single trunnion sleeve 6 and the double trunnion sleeve 5 cooperate with the first connecting cylinder 19, the second connecting cylinder 23 and the pin to realize the splicing of the two split half-rings 1. The dual circulation cooling mechanism efficiently removes the heat generated during the operation, ensuring the stable operation of the equipment.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A built-in bellows pressure ring for a submerged arc furnace, comprising two split half rings (1) spliced by a pin shaft, a plurality of bellows expansion cylinders (3) evenly distributed along the inner wall of the split half ring (1) in the circumferential direction, and a closed ring structure formed after the two split half rings (1) are spliced, wherein the expansion direction of the bellows expansion cylinder (3) is arranged radially along the split half ring (1), and the free end is used to tightly press the copper tile of the submerged arc furnace, characterized in that, It also includes a vertical partition (4) located inside the split semi-ring (1). The interior of the split semi-ring (1) is formed by the vertical partition (4) to form an outer circulating cooling mechanism and an inner circulating cooling mechanism arranged sequentially from the outside to the inside. Multiple corrugated tube telescopic cylinders (3) are arranged in the inner circulating cooling mechanism, and one end of the corrugated tube telescopic cylinder (3) is connected through the vertical partition (4).

2. The built-in bellows pressure ring of claim 1, wherein, The outer circulation cooling mechanism includes an outer cooling chamber, an outer water inlet pipe (9) connected to the upper side of the split semi-ring (1) and communicating with the outer cooling chamber, and an outer water outlet pipe (10).

3. The built-in bellows pressure ring of claim 2, wherein, The outer cooling chamber includes a vertical plate (8) located on the outer side of the split semi-ring (1) and connected to the outer side of the vertical partition (4); multiple partition plates (7) located on one side of the vertical plate (8) and one side of the split semi-ring (1) and arranged longitudinally at intervals; two connecting plates (22) located on the inner side of the vertical partition (4) and connected to the inner wall of the split semi-ring (1); and connecting holes (21) located on the vertical partition (4) and on both sides of the two connecting plates (22); the opposite sides of the two connecting plates (22) form an outer water inlet / outlet channel between the inner wall of the split semi-ring (1) and the vertical partition (4); one end of the outer water inlet pipe (9) and the outer water outlet pipe (10) are respectively connected to the upper side of the outer water inlet / outlet channel; multiple The partition plates (7) form a meandering cooling channel, and one side of the meandering cooling channel is connected to one of the connecting holes (21); the partition plate (7) is connected to the closed end of the bellows telescopic cylinder (3) at the position corresponding to the bellows telescopic cylinder (3); the vertical plate (8) and one side of the split semi-ring (1) form a vertical channel, the vertical channel is connected to one end of the meandering cooling channel, and one side of the vertical channel is connected to another connecting hole (21); the cooling medium input by the outer water inlet pipe (9) enters the vertical channel and meandering cooling channel through the outer water inlet and outlet channel and the connecting hole (21), flows along the serpentine path formed by the partition plate (7), and then flows back to the outer water outlet pipe (10) through another connecting hole (21).

4. The built-in bellows pressure ring of claim 1, wherein, The internal circulation cooling mechanism includes a transverse partition (11) located inside the vertical partition (4) and connected to the inner side of the split semi-ring (1); a guide plate (12) located at one end of the transverse partition (11) and connected to the inner side of the vertical partition (4) and the inner side of the split semi-ring (1); a first baffle (17) located on the upper side of the transverse partition (11) and connected to the inner side of the vertical partition (4) and the inner side of the split semi-ring (1); and a guide plate (12) located on the split semi-ring (1). The second baffle (20) is connected to the upper side of the ring (1) and to the outer side of one of the bellows telescopic cylinders (3); the inner water inlet pipe (16) and the inner water outlet pipe (15) are connected to the upper side of the split half-ring (1) and communicate with the outer cooling chamber; multiple baffles (18) are arranged at intervals on the upper side of the transverse partition (11); the multiple baffles (18) and the multiple bellows telescopic cylinders (3) are arranged alternately; the inner side of the split half-ring (1) is connected to the outer side of the ring (1) and to the outer side of the bellows telescopic cylinder (3); the inner side of the split half-ring (1) is connected to the outer side of the bellows telescopic cylinder (3) and to the outer side of the bellows telescopic cylinder (3); the inner side of the split half-ring (1) is connected to the outer side of the bellows telescopic cylinder (3) and ... An upper cavity (14) and a lower cavity (13) are formed from top to bottom by a horizontal partition (11) between the inner side of the side and the vertical partition (4). The two ends of the lower cavity (13) extend to the opposite ends of the top wall of the cavity and are connected to the upper cavity (14). The inner water inlet pipe (16) and the inner water outlet pipe (15) are both connected to the upper cavity (14), and the inner water inlet pipe (16) corresponds to the first baffle (17) and the split semi-ring (1). Between the free ends; the inner water outlet pipe (15) corresponds between the first baffle (17) and the second baffle (20); the cooling medium input by the inner water inlet pipe (16) is guided by the first baffle (17) to flow through the lower cavity (13), and after flowing back to the upper cavity (14), it is guided by the baffle plate (18) to flow through the gap of the corrugated tube telescopic cylinder (3) and enters between the first baffle (17) and the second baffle (20) and is discharged from the inner water outlet pipe (15).

5. The built-in bellows pressure ring according to claim 4, characterized in that, It also includes a sleeve (2) for inserting a bottom ring water pipe or a hanger, and the sleeve (2) and the corrugated pipe telescopic cylinder (3) are arranged at intervals. The outer wall of the sleeve (2) is provided with a fixing plate (24), and the two fixing plates (24) are connected to the inner wall of the split half ring (1) and the vertical partition (4). The sleeve (2) passes through the horizontal partition (11) and its two ends pass through the upper and lower end faces of the split half ring (1).

6. The built-in bellows pressure ring according to claim 1, characterized in that, The two ends of the split semi-ring (1) are respectively connected to a single ear bushing (6) and a double ear bushing (5). The single ear bushing (6) is provided with a second connecting cylinder (23) through it, and the double ear bushing (5) is provided with a first connecting cylinder (19) through it.

7. The built-in bellows pressure ring according to claim 6, characterized in that, The split semi-ring (1), vertical partition (4), single trunnion sleeve (6), double trunnion sleeve (5), partition plate (7), vertical plate (8), horizontal partition (11), guide plate (12), first baffle (17), second baffle (20), sleeve (2), first connecting cylinder (19), second connecting cylinder (23), and fixing plate (24) are all made of stainless steel; the inner wall of the corrugated telescopic cylinder (3) is coated with a high-temperature resistant ceramic coating.

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