A seal structure for a high speed rotating shaft

Abstract

This utility model relates to the field of mechanical engineering technology and discloses a sealing structure for a high-speed rotating shaft. It includes a sleeve, with a rotating shaft rotatably connected to its inner wall. The inner wall of the sleeve is equipped with a cooling mechanism and a sealing mechanism. A cooling groove is formed in the inner wall of the sleeve, and a liquid replenishment mechanism is provided at the top of the sleeve. The cooling mechanism includes two vertical pipes, the outer walls of which are fixedly connected to the front and rear ends of the inner wall of the sleeve. Two connecting pipes are fixedly connected to adjacent sides of the two vertical pipes, and heat sinks are fixedly connected to the outer walls of both vertical pipes. In this utility model, the cooling lubricating fluid in the cooling groove vaporizes and absorbs heat, allowing the steam to exchange heat with the liquid cooling pipes and then condense and reflux. The optimized liquid flow direction of the guide ring and guide holes, combined with external water cooling, improves heat dissipation efficiency and ensures stable operation of high-speed rotating equipment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a sealing structure for a high-speed rotating shaft. Background Technology

[0002] High-speed rotating shafts refer to components in mechanical equipment that operate at high speeds. When high-speed rotating shafts operate at high speeds, media leakage will occur due to gaps. Therefore, a suitable sealing structure is the key to solving media leakage. Furthermore, the sealing structure needs to balance low friction, wear resistance, and reliable sealing performance at high speeds, achieving a balance between sealing efficiency and shaft rotation energy consumption.

[0003] The core types of sealing structures used for high-speed rotating shafts include labyrinth seals, mechanical seals, and magnetohydrodynamic seals. However, when applying sealing structures, factors such as shaft speed, operating pressure, and temperature must be comprehensively considered. Through special material selection and structural design, contact wear with the shaft can be reduced. At the same time, fluid flow is used to form a sealing barrier to reduce the risk of leakage, thereby ensuring that the high-speed rotating shaft remains stable during operation and improving the reliability and service life of the equipment.

[0004] Although sealing structures for high-speed rotating shafts can achieve a certain level of sealing, the continuous friction between the rotating and stationary rings during high-speed rotation of mechanical seals generates a large amount of heat, causing the sealing surface temperature to rise and the material to soften or carbonize, thus shortening the seal life. Existing solutions use silicon carbide to reinforce the friction components, taking advantage of silicon carbide's adaptability to high temperatures to prevent the material from softening or carbonizing at the friction points. The sealing end face is flushed with an external cleaning medium to remove frictional heat. However, friction is unavoidable at high speeds, and even with silicon carbide, the end face temperature will still rise rapidly. The flushing equipment relies on external energy, requiring additional pumps or pressure sources, and the seal will fail quickly if the flushing medium is interrupted. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sealing structure for high-speed rotating shafts, aiming to improve the problem that silicon carbide materials cannot solve the heat generated by friction in the prior art, and that flushing equipment relies too much on external flushing media.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure for a high-speed rotating shaft, comprising a sleeve, a rotating shaft rotatably connected to the inner wall of the sleeve, a cooling mechanism provided on the inner wall of the sleeve, a sealing mechanism provided on the inner wall of the sleeve, a cooling groove provided on the inner wall of the sleeve, and a liquid replenishment mechanism provided at the top of the sleeve.

[0007] The cooling mechanism includes two vertical pipes, the outer walls of which are fixedly connected to the front and rear ends of the inner wall of the sleeve. Two connecting pipes are fixedly connected to adjacent sides of the two vertical pipes. Heat sinks are fixedly connected to the outer walls of the two vertical pipes. Fixing grooves are opened on the right side of the two heat sinks. Multiple flow guide rings are fixedly connected to the inner wall of the cooling groove. Multiple flow guide holes are opened on the outer walls of the multiple flow guide rings. A water cooling assembly is provided at the right end of the outer wall of the sleeve.

[0008] As a further description of the above technical solution:

[0009] The sealing mechanism includes two fixed shells. The outer walls of the two fixed shells are fixedly connected to the upper and lower ends of the inner wall of the sleeve. The upper and lower ends of the inner wall of the sleeve are provided with mounting grooves. The inner walls of the two fixed shells are fixedly connected with sealing rings. The inner walls of the two fixed shells are fixedly connected with airbags. The front side of the outer wall of the two airbags is fixedly connected with air supply valves. The outer walls of the two airbags are fixedly connected with metal bellows. An air supply assembly is provided at the right end of the outer wall of the sleeve. A reinforcing assembly is provided on the outer wall of the rotating shaft.

[0010] As a further description of the above technical solution:

[0011] The liquid replenishment mechanism includes a liquid level compensation tank, the bottom of which is fixedly connected to the top of the outer wall of the sleeve, and a liquid replenishment pipe is connected to the left end of the liquid level compensation tank. A check valve is fixedly connected to the top of the outer wall of the cooling tank.

[0012] As a further description of the above technical solution:

[0013] The water-cooling assembly includes a water tank, the left side of which is fixedly connected to the right end of the outer wall of the sleeve, and a miniature water pump is fixedly connected to the top of the water tank. The top of the miniature water pump is connected to a liquid cooling pipe.

[0014] As a further description of the above technical solution:

[0015] The gas delivery assembly includes a gas storage tank, the left end of which is fixedly connected to the right end of the outer wall of the sleeve, and a gas pump is fixedly connected to the front end of the gas storage tank. The top end of the gas pump is connected to a gas delivery pipe.

[0016] As a further description of the above technical solution:

[0017] The reinforcement assembly includes two inner retaining rings, with the opposite sides of the two inner retaining rings fixedly connected to the inner wall of the cooling tank, and two outer retaining rings fixedly connected to the outer wall of the rotating shaft.

[0018] As a further description of the above technical solution:

[0019] A pressure sensor is fixedly connected to the rear end of the inner wall of the cooling tank, and a pressure relief valve is fixedly connected to the left end of the inner wall of the sleeve.

[0020] As a further description of the above technical solution:

[0021] A temperature sensor is fixedly connected to the front end of the inner wall of the cooling tank, and an alarm is fixedly connected to the front end of the top of the sleeve.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the heat generated by the rotating shaft is carried away by the vaporization of the cooling lubricating liquid in the cooling tank. The steam enters the vertical pipe through the connecting pipe. The steam exchanges heat with the liquid cooling pipe in the vertical pipe to achieve condensation and reflux. The guide ring and guide hole optimize the liquid flow direction. The flow rate of clean water can be adjusted as needed by the external water cooling component, reducing the dependence on external energy, significantly improving heat dissipation efficiency, and effectively extending the service life of the sealing structure and the rotating shaft.

[0024] 2. In this utility model, an air pump inflates the airbag, forming an initial sealing barrier under the constraint of the fixed shell. Meanwhile, the metal bellows undergoes synchronous deformation, compensating for shaft vibration and offset, and enhancing stability. The sealing ring automatically fits the shaft surface, and the leakage of the medium is limited by the inner and outer retaining rings. By combining active inflation with elastic compensation, dynamic sealing adjustment is achieved, extending equipment life and reducing maintenance costs. Attached Figure Description

[0025] Figure 1 This is a perspective view of a sealing structure for a high-speed rotating shaft proposed in this utility model;

[0026] Figure 2 This is a front view of a sealing structure for a high-speed rotating shaft proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of the fixing shell of a sealing structure for a high-speed rotating shaft proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a vertical tube for a sealing structure of a high-speed rotating shaft proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of a gas storage tank for a sealing structure of a high-speed rotating shaft proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the flow guide ring of a sealing structure for a high-speed rotating shaft proposed in this utility model.

[0031] Legend:

[0032] 1. Sleeve; 2. Rotating shaft; 3. Cooling mechanism; 301. Vertical pipe; 302. Connecting pipe; 303. Heat sink; 304. Fixing groove; 305. Guide ring; 306. Guide hole; 307. Water cooling assembly; 3071. Water tank; 3072. Miniature water pump; 3073. Liquid cooling pipe; 4. Cooling tank; 5. Sealing mechanism; 501. Mounting groove; 502. Fixing shell; 503. Gas valve; 504. Sealing... 505. Sealing ring; 506. Airbag; 507. Metal bellows; 508. Gas delivery assembly; 5071. Gas storage tank; 5072. Air pump; 5073. Gas delivery pipe; 508. Reinforcing assembly; 5081. Inner retaining ring; 5082. Outer retaining ring; 6. Liquid replenishment mechanism; 601. Liquid level compensation tank; 602. Liquid replenishment pipe; 603. Check valve; 7. Pressure sensor; 8. Pressure relief valve; 9. Temperature sensor; 10. Alarm. Detailed Implementation

[0033] 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.

[0034] Reference Figure 2 , Figure 4 and Figure 6 The present invention provides an embodiment of a sealing structure for a high-speed rotating shaft, comprising a sleeve 1, a rotating shaft 2 rotatably connected to the inner wall of the sleeve 1, a cooling mechanism 3 provided on the inner wall of the sleeve 1 for cooling the heat generated when the rotating shaft rotates, a sealing mechanism 5 provided on the inner wall of the sleeve 1 for sealing the connection between the sleeve 1 and the rotating shaft 2, a cooling groove 4 provided on the inner wall of the sleeve 1 for storing cooling lubricant, and a replenishment mechanism 6 provided at the top of the sleeve 1 for replenishing the cooling lubricant when it is accidentally reduced in the device.

[0035] The cooling mechanism 3 includes two vertical pipes 301. These pipes allow the cooling lubricant, which partially vaporizes due to overheating, to enter from the top and rapidly cool and condense. The outer walls of both vertical pipes 301 are fixedly connected to the front and rear ends of the inner wall of the sleeve 1. Two connecting pipes 302 are fixedly connected to adjacent sides of each vertical pipe 301, connecting the cooling tank 4 to the two vertical pipes 301. Heat sinks 303 are fixedly connected to the outer walls of both vertical pipes 301. These heat sinks 303 increase the heat dissipation area and accelerate the heat dissipation speed. A fixed... The cooling tank 304 is fixed and connected to the liquid cooling pipe 3073. Multiple guide rings 305 are fixedly connected to the inner wall of the cooling tank 4. The multiple guide rings 305 can guide the cooling lubricant in the cooling tank 4, so that the heat-generating areas in the device can be contacted, thereby quickly transferring the heat. Multiple guide holes 306 are opened on the outer wall of the multiple guide rings 305. The guide holes 306 are used to quickly transfer the cooling lubricant. A water cooling component 307 is provided on the right end of the outer wall of the sleeve 1. The water cooling component 307 is used to quickly cool down the heated cooling lubricant in the vertical pipe 301 and transfer the heat.

[0036] The water cooling assembly 307 includes a water tank 3071, which is used to store a certain amount of clean water. The left side of the water tank 3071 is fixedly connected to the right end of the outer wall of the sleeve 1. A micro water pump 3072 is fixedly connected to the top of the water tank 3071, which enables the clean water to flow. The top of the micro water pump 3072 is connected to a liquid cooling pipe 3073, which contacts the heat sink 303 to transfer heat.

[0037] Specifically, when the rotating shaft 2 rotates at high speed inside the sleeve 1, the cooling lubricant in the cooling tank 4 absorbs the heat generated by the friction between the rotating shaft 2 and the sealing surface. Part of the liquid vaporizes to form steam. The steam enters the vertical pipe 301 through the connecting pipe 302. The inclined design of the connecting pipe 302 ensures that the steam rises smoothly. During the rise of the steam in the vertical pipe 301, it exchanges heat with the liquid cooling pipe 3073 through the heat sink 303 on the outer wall of the vertical pipe 301. The clean water in the liquid cooling pipe 3073 is driven by the micro water pump 3072 to circulate, carrying away the heat from the heat sink 303, so that the steam rises smoothly in the vertical pipe 301. The liquid inside pipe 301 condenses and flows back from the bottom of the vertical pipe 301 to the cooling tank 4. The guide ring 305 guides the liquid to flow in the direction of rotation of the rotating shaft 2. The guide hole 306 on the guide ring 305 enables the liquid to be evenly distributed in various positions, ensuring that the heat-generating area is fully cooled. Meanwhile, the micro water pump 3072 draws water from the water tank 3071. The clean water flows back to the water tank 3071 after passing through the fixed groove 304 of the heat sink 303 via the liquid cooling pipe 3073. The device automatically adjusts the water pump flow rate to maintain the condensation efficiency of the vertical pipe 301 and achieves continuous cooling of the high-speed rotating shaft.

[0038] ReferenceFigure 1 , Figure 3 and Figure 5 The sealing mechanism 5 includes two fixed shells 502, which guide the compression direction of the airbag 505. The outer walls of the two fixed shells 502 are fixedly connected to the upper and lower ends of the inner wall of the sleeve 1. The upper and lower ends of the inner wall of the sleeve 1 are provided with mounting grooves 501 to facilitate the sleeve 1 to accommodate the fixed shells 502. The inner walls of the two fixed shells 502 are fixedly connected with sealing rings 504. The sealing rings 504 are located on the side of the inner wall of the two fixed shells 502 that are farther apart, which can further seal and reinforce the contact surface between the sleeve 1 and the rotating shaft 2. The airbags 505 are fixedly connected to the inner walls of the two fixed shells 502. The airbag 505 compresses and seals the contact surface between the sleeve 1 and the rotating shaft 2. An air supply valve 503 is fixedly connected to the front side of the outer wall of both airbags 505. The air supply valve 503 facilitates the inflation of the airbags 505. A metal bellows 506 is fixedly connected to the outer wall of both airbags 505. The metal bellows 506 is used to reinforce the contact surface between the sleeve 1 and the rotating shaft 2. An air supply component 507 is provided at the right end of the outer wall of the sleeve 1. The air supply component 507 is used to supply air to the airbag 505. A reinforcement component 508 is provided on the outer wall of the rotating shaft 2. The reinforcement component 508 is used to reinforce the seal.

[0039] The gas delivery assembly 507 includes a gas storage tank 5071, which is used to store compressed gas. The left end of the gas storage tank 5071 is fixedly connected to the right end of the outer wall of the sleeve 1. The front end of the gas storage tank 5071 is fixedly connected to an air pump 5072, which is used to draw gas and pressurize it. The top end of the air pump 5072 is connected to a gas delivery pipe 5073, through which the compressed gas is transferred to the air bag 505. The reinforcement assembly 508 includes two inner retaining rings 5081. The two inner retaining rings 5081 are fixedly connected to the inner wall of the cooling tank 4 on opposite sides. The outer wall of the rotating shaft 2 is fixedly connected to two outer retaining rings 5082. The inner retaining rings 5081 and the outer retaining rings 5082 are rotatably connected, which facilitates the rotation and sealing of the rotating shaft 2.

[0040] Specifically, when the rotating shaft 2 rotates, the air pump 5072 draws and pressurizes gas from the air tank 5071, inflates it through the air supply pipe 5073 and the air supply valve 503 into the airbag 505. After the airbag 505 expands, it is guided by the fixed shell 502 to press against the contact surface between the sleeve 1 and the rotating shaft 2, achieving an initial seal. At the same time, the airbag 505 causes the metal bellows 506 to deform, further reinforcing the sealing effect. The elasticity of the airbag 505 and the metal bellows 506 can compensate for the slight deviation of the shaft, while the sealing ring 504 on the inner wall of the fixed shell 502 provides a secondary seal to reinforce the contact surface, enhancing the reliability of the seal. Meanwhile, when the rotating shaft 2 rotates, the inner retaining ring 5081 on the inner wall and the outer retaining ring 5082 on the outer wall maintain a rotational connection, ensuring both the flexible rotation of the rotating shaft 2 and limiting the radial displacement of the rotating shaft 2, assisting the airbag 505 in maintaining a stable sealing state, effectively coping with the high-speed rotation state, and ensuring the sealing effect.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The fluid replenishment mechanism 6 includes a level compensation tank 601, which stores cooling lubricant. The bottom end of the level compensation tank 601 is fixedly connected to the top of the outer wall of the sleeve 1. The left end of the level compensation tank 601 is connected to a replenishment pipe 602, which is used to transport the cooling lubricant in the level compensation tank 601. A check valve 603 is fixedly connected to the top of the outer wall of the cooling tank 4. The check valve 603 can open when there is less cooling lubricant and the pressure is low in the cooling tank 4, and can prevent the cooling tank 4 from opening. The cooling lubricant enters the liquid level compensation tank 601. A pressure sensor 7 is fixedly connected to the rear end of the inner wall of the cooling tank 4. The pressure sensor 7 is used to detect the pressure in the cooling tank 4. A pressure relief valve 8 is fixedly connected to the left end of the inner wall of the sleeve 1. The pressure relief valve 8 is used to relieve pressure. A temperature sensor 9 is fixedly connected to the front end of the inner wall of the cooling tank 4. The temperature sensor 9 is used to detect the temperature in the cooling tank 4 in the sleeve 1. An alarm 10 is fixedly connected to the front side of the top of the sleeve 1. When the temperature is too high, the alarm 10 can sound an alarm.

[0042] Specifically, when the rotating shaft 2 is running, the pressure sensor 7 monitors the pressure in the cooling tank 4 in real time. If the liquid in the cooling tank 4 decreases due to vaporization or leakage of the cooling lubricant, and the pressure drops to a preset threshold, the check valve 603 will automatically open. The cooling lubricant in the liquid level compensation tank 601 will flow into the cooling tank 4 through the replenishment pipe 602 to complete the liquid level replenishment. The check valve 603 can prevent the liquid in the cooling tank 4 from flowing back into the liquid level compensation tank 601. At the same time, the temperature sensor 9 continuously monitors the temperature in the cooling tank 4. Once the temperature exceeds the safe range, the alarm 10 will immediately sound an alarm to remind the operator. If the pressure in the cooling tank 4 is too high due to vaporization of the cooling lubricant, the pressure relief valve 8 will automatically open to relieve the pressure, so as to avoid the sealing and cooling of the device being affected by excessive pressure, and ensure that the device can work safely and stably.

[0043] Working principle: When the rotating shaft 2 rotates at high speed inside the sleeve 1, the cooling lubricant in the cooling tank 4 absorbs the heat generated by the rotation, and part of the liquid vaporizes to form steam. The steam enters the vertical pipe 301 through the connecting pipe 302. The inclined design of the connecting pipe 302 enables the steam to rise smoothly. Inside the vertical pipe 301, the steam exchanges heat with the liquid cooling pipe 3073 through the heat sink 303 on the outer wall. The clean water in the liquid cooling pipe 3073 is driven by the micro water pump 3072 to circulate, carrying away the heat from the heat sink 303. The steam is condensed into liquid and flows back from the bottom of the vertical pipe 301 to the cooling tank 4. At the same time, the guide ring 305 guides the liquid to flow along the direction of the rotating shaft 2, while the guide hole 306 promotes the uniform distribution of the liquid and fully cools the heat-generating area. The micro water pump 3072 draws water from the water tank 3071, and the clean water flows back after passing through the liquid cooling pipe 3073 and the fixing groove 304 of the heat sink 303. In addition, the device automatically adjusts the water pump flow rate according to the needs to maintain the condensation efficiency of the vertical pipe 301 and achieve continuous cooling of the high-speed rotating shaft.

[0044] Furthermore, when the rotating shaft 2 is running, the air pump 5072 draws gas from the air tank 5071 and pressurizes it, then inflates the air bag 505 through the air supply pipe 5073 and the air supply valve 503. Under the constraint of the fixed shell 502, the air bag 505 expands radially, forming a uniform compression on the contact surface between the sleeve 1 and the rotating shaft 2, thus forming an initial sealing barrier. Meanwhile, the metal bellows 506 deforms synchronously with the air bag 505, enhancing the sealing stability. The sealing ring 504 on the inner wall of the fixed shell 502 can ensure that it fits the shaft surface, improving the sealing reliability. At the same time, the inner retaining ring 5081 and the outer retaining ring 5082 maintain a small gap, which allows the shaft to rotate freely while preventing media leakage. The device can dynamically adjust the pressure of the air bag 505, so that the elastic deformation of the metal bellows 506 and the air bag 505 work together to cope with the vibration and displacement of the shaft, achieving long-term reliable sealing of the high-speed rotating shaft.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 sealing structure for a high-speed rotating shaft, comprising a sleeve (1), characterized in that: The inner wall of the sleeve (1) is rotatably connected to a rotating shaft (2), the inner wall of the sleeve (1) is provided with a cooling mechanism (3), the inner wall of the sleeve (1) is provided with a sealing mechanism (5), the inner wall of the sleeve (1) is provided with a cooling groove (4), and the top of the sleeve (1) is provided with a liquid replenishment mechanism (6). The cooling mechanism (3) includes two vertical pipes (301). The outer walls of the two vertical pipes (301) are fixedly connected to the front and rear ends of the inner wall of the sleeve (1). Two connecting pipes (302) are fixedly connected to adjacent sides of the two vertical pipes (301). Heat sinks (303) are fixedly connected to the outer walls of the two vertical pipes (301). Fixing grooves (304) are opened on the right side of the two heat sinks (303). Multiple flow guide rings (305) are fixedly connected to the inner wall of the cooling groove (4). Multiple flow guide holes (306) are opened on the outer walls of the multiple flow guide rings (305). A water cooling assembly (307) is provided at the right end of the outer wall of the sleeve (1).

2. The sealing structure for a high-speed rotating shaft according to claim 1, characterized in that: The sealing mechanism (5) includes two fixed shells (502). The outer walls of the two fixed shells (502) are fixedly connected to the upper and lower ends of the inner wall of the sleeve (1). The upper and lower ends of the inner wall of the sleeve (1) are provided with mounting grooves (501). The inner walls of the two fixed shells (502) are fixedly connected with sealing rings (504). The inner walls of the two fixed shells (502) are fixedly connected with airbags (505). The front side of the outer wall of the two airbags (505) is fixedly connected with air supply valves (503). The outer walls of the two airbags (505) are fixedly connected with metal bellows (506). The right end of the outer wall of the sleeve (1) is provided with an air supply component (507). The outer wall of the rotating shaft (2) is provided with a reinforcing component (508).

3. A sealing structure for a high-speed rotating shaft according to claim 1, characterized in that: The replenishment mechanism (6) includes a liquid level compensation tank (601), the bottom end of which is fixedly connected to the top of the outer wall of the sleeve (1), the left end of which is connected to a replenishment pipe (602), and the top of the outer wall of the cooling tank (4) is fixedly connected to a check valve (603).

4. A sealing structure for a high-speed rotating shaft according to claim 1, characterized in that: The water-cooling assembly (307) includes a water tank (3071), the left side of which is fixedly connected to the right end of the outer wall of the sleeve (1), and a micro water pump (3072) is fixedly connected to the top of the water tank (3071). The top of the micro water pump (3072) is connected to a liquid cooling pipe (3073).

5. A sealing structure for a high-speed rotating shaft according to claim 2, characterized in that: The gas delivery assembly (507) includes a gas storage tank (5071), the left end of which is fixedly connected to the right end of the outer wall of the sleeve (1), and the front end of the gas storage tank (5071) is fixedly connected to an air pump (5072), the top end of which is connected to a gas delivery pipe (5073).

6. A sealing structure for a high-speed rotating shaft according to claim 2, characterized in that: The reinforcement component (508) includes two inner retaining rings (5081), and the two inner retaining rings (5081) are fixedly connected to the inner wall of the cooling tank (4) on opposite sides. The outer wall of the rotating shaft (2) is fixedly connected to two outer retaining rings (5082).

7. A sealing structure for a high-speed rotating shaft according to claim 1, characterized in that: A pressure sensor (7) is fixedly connected to the rear end of the inner wall of the cooling tank (4), and a pressure relief valve (8) is fixedly connected to the left end of the inner wall of the sleeve (1).

8. A sealing structure for a high-speed rotating shaft according to claim 1, characterized in that: A temperature sensor (9) is fixedly connected to the front end of the inner wall of the cooling tank (4), and an alarm (10) is fixedly connected to the front end of the top of the sleeve (1).

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