Intelligent sealing gasket and leakage early warning system

Abstract

The invention discloses an intelligent sealing gasket and a leakage early warning system, and belongs to the technical field of pipeline leakage monitoring, the intelligent sealing gasket comprises a gasket body arranged between two pipeline flanges, the periphery of the gasket body is fixedly sleeved with a monitoring ring body, and monitoring annular grooves are formed in the inner peripheries of the two side faces of the monitoring ring body; a plurality of partition pieces which are evenly distributed in an annular array mode are fixedly connected into the monitoring annular groove, the monitoring annular groove is divided into a plurality of areas through the partition pieces, and an inductive sensor is installed on the side, close to the gasket body, in each area of the monitoring annular groove. The leakage early warning system comprises a plurality of hydraulic bases which are evenly arranged in an annular array mode, a pushing ring is arranged between the hydraulic bases and the flange nut, the pushing ring and the flange nut are tightly connected in an abutting mode, and during work, the intelligent sealing gasket sends leakage information to push the pushing ring to push the flange nut. The clamping force of the two pipeline flanges in the surrounding area of the flange bolts is increased through the reaction force, and therefore leakage is restrained and temporarily blocked.

Description

Technical Field

[0001] This invention relates to the field of pipeline leakage monitoring technology, specifically an intelligent sealing gasket and leakage early warning system. Background Technology

[0002] Pipeline systems play a vital role in oil and gas energy supply, water supply and drainage network deployment, and gas and heat system construction. Pipeline systems often adopt a segmented pipeline and flange connection construction mode. However, with the increase of service life and changes in environmental factors, many problems have gradually been exposed at the flange connection, among which loosening is particularly prominent and has become a key hidden danger threatening the safety of the pipeline network.

[0003] Application document CN118030983A discloses a self-sensing flange gasket for structural health monitoring of pipeline systems. The flange gasket consists of functional components and signal transmission circuit components. The functional components have a three-layer concentric ring contact structure, including a sealing inner ring layer, a leakage detection middle ring layer, and a sealing reinforcement outer ring layer, which are used to realize the sealing and condition monitoring functions of the flange gasket. The signal transmission circuit components include an inner ring edge electrode layer and a middle ring planar interdigitated electrode layer, which are used to realize the acquisition and transmission of electrical signals of the flange gasket. Application document with publication number CN120537938A discloses a monitoring and control device with overload alarm, including a pipeline structure and four bolted connections. Two monitoring structures are installed on the outer surface of the pipeline structure, and the two monitoring structures are fixedly connected by the four bolted connections.

[0004] Based on the aforementioned patents and existing technologies, it can be concluded that existing flange gaskets often have sensors installed on the contact surface with the flange. This causes the sealing performance of such flange gaskets to be damaged or reduced during the aforementioned processing, thus significantly impacting production and daily life. In the monitoring process, existing technologies can often only provide early warnings, alarms, and point reports of leaks, lacking automatic measures to quickly respond to leaks and temporarily repair them, leading to escalating adverse consequences. Furthermore, after a leak, existing technologies often simply collect and seal the leaked material around the flange perimeter, often requiring workers to clean up before sealing, resulting in significant time consumption and low efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing a leakage early warning system that improves overall work efficiency.

[0006] This invention solves at least one of the following technical problems: (1) Existing flange gaskets often suffer performance degradation due to various new processing steps; (2) Existing monitoring processes often simply alarm for leaks, lacking automatic response measures, which can easily develop into major accidents while waiting for the situation to be dealt with. (3) Existing technologies often simply collect and store the materials, resulting in a longer overall time consumption.

[0007] The objective of this invention can be achieved through the following technical solution: an intelligent sealing gasket, comprising a gasket body disposed between two pipe flanges, both pipe flanges being fixedly connected to supply pipes, the two pipe flanges being connected by a plurality of flange bolts and corresponding flange nuts in a uniformly distributed annular array to tightly abut against the gasket body, a monitoring ring body being fixedly sleeved on the outer periphery of the gasket body, a monitoring annular groove being formed on the inner periphery of both sides of the monitoring ring body, a plurality of partition plates in a uniformly distributed annular array being fixedly connected in the monitoring annular groove, the sides of the partition plates being tightly abut against the pipe flanges, the monitoring annular groove being divided into several regions by the partition plates, and a sensing sensor being installed on the side of the monitoring annular groove closest to the gasket body in each region of the monitoring annular groove.

[0008] Preferably, a number of flow guide pipes are embedded in the monitoring ring body, each flow guide pipe corresponds to and is connected to each area of ​​the monitoring annular groove, and flow guide mains are embedded on both sides of the monitoring ring body, with each flow guide pipe on each side connected to the corresponding flow guide main.

[0009] Preferably, a protective block is fixedly connected to one side of the monitoring ring body, and two discharge hoses are threaded through the protective block. Two connecting pipes are buried on one side of the monitoring ring body. The main guide pipe is connected to the corresponding discharge hose through the corresponding connecting pipe, and the two discharge hoses are connected to a suction hose.

[0010] Preferably, a data collection line is embedded in the monitoring ring body, and several monitoring sensors are embedded in the inner peripheral sidewall of the gasket body. The sensing sensors and monitoring sensors are electrically connected to the data collection line, and the data collection line is electrically connected to a transmission line.

[0011] Preferably, the outer periphery of the pipe flange is provided with a split joint, and a buzzer is provided on the outer periphery of the split joint. A drain main pipe is connected to the split joint. The transmission line and the suction hose are sealed through the side wall of the drain main pipe. The transmission line is electrically connected to the buzzer. The suction hose and the drain main pipe are respectively connected to different liquid pumps.

[0012] A leakage early warning system, combined with an intelligent sealing gasket, includes several hydraulic bases evenly arranged in a ring array. Each hydraulic base corresponds to a flange bolt. A through groove is provided in the middle of the hydraulic base to accommodate the flange bolt. The hydraulic base is positioned between the flange nut and the pipe flange. A push ring is provided between the hydraulic base and the flange nut, and the push ring and the flange nut are in close contact.

[0013] Preferably, each hydraulic base has an annular hydraulic cavity on the side surface near the flange nut. The annular hydraulic cavity is sleeved around the flange bolt and coaxial with the flange bolt. The opening of the annular hydraulic cavity is sealed and fixedly connected with a sealing ring. Several first push rods are movably inserted through each sealing ring in a uniform annular array. An annular piston is sealed and slidably sleeved inside the annular hydraulic cavity. The annular piston is fixedly connected to one end of the first push rod, and the other end of the first push rod is fixedly connected to the push ring.

[0014] Preferably, a hydraulic column is fixedly connected to the side of the hydraulic base away from the flange nut, a fluid guide cavity is embedded in the hydraulic base, a hydraulic pipe cavity is embedded in the hydraulic column, and the hydraulic pipe cavity, the fluid guide cavity and the annular hydraulic cavity are interconnected and filled with hydraulic oil.

[0015] Preferably, the end of the hydraulic cavity is sealed and slidably sleeved with a second push rod, an installation cylinder is installed on the hydraulic column, an electric push rod is installed inside the installation cylinder, and the telescopic end of the electric push rod is fixedly connected to the second push rod.

[0016] Preferably, each hydraulic base is connected and assembled into a ring array structure by connecting blocks.

[0017] The beneficial effects of this invention are: (1) During operation, the gasket body and the pipe flange are tightly connected to maintain the stable operation of the sealing process. The gasket body is made by combining two gaskets into one, which avoids damage to the gasket body when installing various monitoring sensors, and maintains the original sealing performance of the gasket body as much as possible. It also avoids damage to the outer surface of the gasket body caused by the added processing process. Furthermore, it allows the monitoring sensors to be arrayed in the middle of the inner circumference of the gasket body, avoiding damage to its own performance due to the added processing process. (2) During operation, the leakage early warning system and the intelligent sealing gasket are interconnected. When a leakage gap appears on the mating surface between the gasket body and the pipe flange and leakage occurs, the intelligent sealing gasket sends out leakage information. The area through which the leakage material flows is a certain area on the monitoring annular groove. The leakage location is sensed and accurately marked by the induction sensors in the area, and the relevant information is sent out, so that the staff can accurately understand the specific location and leakage level of the leakage. The electric actuator of the induction sensor near the leakage location is then activated. The electric actuator pushes the second push rod into the hydraulic cavity, pushing the hydraulic oil into the annular hydraulic cavity. The cross-sectional ratio of the hydraulic cavity and the annular hydraulic cavity is used to generate a large thrust on each first push rod, which pushes the push ring to push the flange nut. The reaction force increases the clamping force of the two pipe flanges in the area around the flange bolt, thereby suppressing and temporarily blocking leakage, so as to avoid the continuation of small leakage and the escalation of the fault. It also allows the staff to take action when leakage occurs, so as not to delay the best troubleshooting time. At the same time, each electric push rod pushes to a different degree, which increases the clamping force of the pipe flange to form a fan-shaped array, thereby avoiding deformation and damage to the pipe flange itself, improving the sealing effect of leakage and preventing the escalation of leakage accidents. (3) During operation, the leakage material is smoothly sucked away by the liquid pump and suction hose, and guided by the corresponding diversion branch pipe and diversion main pipe, so as to avoid further leakage to the contact surface of the monitoring ring body, thereby assisting the staff to control the leakage situation, avoid the increase of the accident level, and avoid the staff to do extra cleaning work. When the amount of leakage material is large and the suction hose cannot suck up all the leakage material, the leakage material is collected and sealed by the half joint, and the leakage material is quickly discharged by the liquid pump and the discharge main pipe, so that the leakage material in the half joint is emptied as much as possible, avoiding the leakage material from filling up, so that the staff's field of vision is not interfered when the half joint is opened in a limited way, and the half joint is fully utilized to isolate the leakage material from the external environment, so as to avoid the leakage material from polluting the environment as much as possible. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a front view of the overall structure of the intelligent sealing gasket of the present invention; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 This is a side view of the internal structure of the leakage early warning system of the present invention; Figure 4 for Figure 3 Enlarged view of region B in the middle; Figure 5 for Figure 3 Enlarged view of region C in the middle; Figure 6 This is a schematic diagram of the arrangement structure of the hydraulic base of the present invention; In the diagram: 101. Gasket body; 102. Monitoring ring body; 103. Monitoring annular groove; 104. Separator; 105. Sensor; 106. Flow guide branch pipe; 107. Flow guide main pipe; 108. Connecting pipe; 109. Excretion hose; 110. Main line; 111. Transmission line; 112. Suction hose; 113. Joint; 114. Excretion main pipe; 115. Buzzer; 116. Monitoring sensor; 117. 201. Protective block; 202. Hydraulic base; 203. Annular hydraulic chamber; 204. Annular piston; 205. First push rod; 206. Push ring; 207. Sealing ring; 208. Fluid guide chamber; 209. Hydraulic column; 210. Hydraulic chamber; 211. Mounting cylinder; 212. Electric push rod; 213. Second push rod; 214. Connecting block; 901. Supply pipe; 902. Pipe flange; 903. Flange bolt; 904. Flange nut. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Please see Figure 1-5As shown: A smart sealing gasket includes a gasket body 101 disposed between two pipe flanges 902. Both pipe flanges 902 are fixedly connected to supply pipes 901. The two pipe flanges 902 are connected by a plurality of flange bolts 903 evenly distributed in a ring array and corresponding flange nuts 904, thereby forming a tight seal against the gasket body 101. A monitoring ring body 102 is fixedly sleeved on the outer periphery of the gasket body 101. Monitoring annular grooves 103 are formed on the inner periphery of both sides of the monitoring ring body 102. A monitoring annular groove 103 is fixedly connected within the monitoring annular groove 103. A number of partition plates 104 are evenly distributed in a ring array. The sides of the partition plates 104 are in close contact with the pipe flange 902. The monitoring annular groove 103 is divided into several regions by the partition plates 104. A sensing sensor 105 is installed on the side of each region of the monitoring annular groove 103 near the gasket body 101. A number of flow guide pipes 106 are embedded in the monitoring annular body 102. Each flow guide pipe 106 corresponds to and is connected to each region of the monitoring annular groove 103. Flow guide mains 107 are embedded on both sides of the interior of the monitoring annular body 102. Each of the side-mounted diversion pipes 106 is connected to the corresponding main diversion pipe 107. A protective block 117 is fixedly connected to one side of the monitoring ring body 102. Two discharge hoses 109 are threaded through the protective block 117. Two connecting pipes 108 are embedded on one side of the monitoring ring body 102. The main diversion pipe 107 is connected to the corresponding discharge hose 109 through the corresponding connecting pipe 108. The two discharge hoses 109 are connected to a suction hose 112. A collection line 110 is embedded inside the monitoring ring body 102. Several monitoring transmitters are embedded in the inner circumferential side wall of the gasket body 101. Sensor 116, sensing sensor 105 and monitoring sensor 116 are electrically connected to the main line 110. The main line 110 is electrically connected to the transmission line 111. The outer periphery of the pipe flange 902 is provided with a split joint 113. The outer periphery of the split joint 113 is provided with a buzzer 115. The split joint 113 is connected to the discharge main pipe 114. The transmission line 111 and the suction hose 112 are both sealed through the side wall of the discharge main pipe 114. The transmission line 111 is electrically connected to the buzzer 115. The suction hose 112 and the discharge main pipe 114 are respectively connected to different liquid pumps. The sensing sensor 105 only senses whether there is a leaking substance. The monitoring sensor 116 is a combination of various sensors such as temperature, humidity, and pressure. The buzzer 115 can not only emit an alarm sound on its own, but also output all data information transmitted from the transmission line 111. All of these are existing technologies and will not be described in detail in this embodiment. In this embodiment, the gasket body 101 is manufactured by combining two gaskets into one, which avoids damage to the gasket body 101 when installing each monitoring sensor 116, maintains the original sealing performance of the gasket body 101 as much as possible, and avoids damage to the outer surface of the gasket body 101 caused by the additional processing. It also allows the monitoring sensors 116 to be arrayed in the middle of the inner circumference of the gasket body 101. Then, the monitoring sensors 116 are electrically connected to the transmission line 111, and the monitoring ring body 102 is fixedly sleeved on the outer circumference of the gasket body 101. During operation, the gasket body 101 and the pipe flange 902 are tightly connected to maintain a stable sealing process. When a leakage gap appears on the contact surface between the gasket body 101 and the pipe flange 902, the leakage material flows through several areas on the monitoring annular groove 103. The sensor 105 in the area senses and accurately marks the leakage location and sends the relevant information outward, so that the staff can accurately understand the specific location and leakage level of the leakage and thus respond accurately and efficiently. Through the suction of the liquid pump and the suction hose 112, and the guidance of the corresponding diversion branch pipe 106 and diversion main pipe 107, the leakage material is smoothly sucked away, preventing it from continuing to seep out of the contact surface of the monitoring annular groove 102. This helps the staff control the leakage situation, prevents the accident level from escalating, and avoids additional cleaning work for the staff. The monitoring annular grooves 103 and the diversion main pipes 107 on both sides prevent the suction and cleaning of the leakage material on one side from interfering with the leakage monitoring work on the other side, thus ensuring the accuracy and efficiency of the leakage monitoring process. When the amount of leaked material is large and the suction hose 112 cannot suck up all of it, the leaked material is collected and sealed through the split joint 113. The leaked material is then quickly discharged through the liquid pump and the drain pipe 114, so that the leaked material in the split joint 113 is emptied as much as possible, preventing it from becoming full. This ensures that the field of vision is not obstructed when the split joint 113 is partially opened, and makes full use of the split joint 113 to isolate the leaked material from the external environment, minimizing environmental pollution caused by the leaked material.

[0022] Please see Figure 3-6As shown: A leakage early warning system includes an intelligent sealing gasket and several hydraulic bases 201 evenly arranged in a ring array. Each hydraulic base 201 corresponds one-to-one with a flange bolt 903. A through groove is provided in the center of each hydraulic base 201 to accommodate the flange bolt 903. The hydraulic base 201 is positioned between a flange nut 904 and a pipe flange 902. Each hydraulic base 201 has a ring-shaped hydraulic cavity 202 on its surface near the flange nut 904. The ring-shaped hydraulic cavity 202 is fitted onto the flange bolt. The outer periphery of bolt 903 is coaxial with flange bolt 903. The opening of the annular hydraulic chamber 202 is sealed and fixedly connected with a sealing ring 206. Several first push rods 204 are movably passed through each sealing ring 206 in a uniformly distributed annular array. An annular piston 203 is sealed and slidably sleeved inside the annular hydraulic chamber 202. The annular piston 203 is fixedly connected to one end of the first push rod 204. The other end of the first push rod 204 is fixedly connected to a push ring 205. The push ring 205 and flange nut 904 are tightly abutted. Each hydraulic base 201 is connected and assembled into a ring array structure through connecting block 213. A hydraulic column 208 is fixedly connected to the side of the hydraulic base 201 away from the flange nut 904. A fluid guide cavity 207 is embedded in the hydraulic base 201. A hydraulic cavity 209 is embedded in the hydraulic column 208. The hydraulic cavity 209, the fluid guide cavity 207 and the ring hydraulic cavity 202 are correspondingly interconnected and filled with hydraulic oil. A second push rod 212 is sealed and slidably sleeved at the end of the hydraulic cavity 209. An installation cylinder 210 is installed on the hydraulic column 208. An electric push rod 211 is installed in the installation cylinder 210. The telescopic end of the electric push rod 211 is fixedly connected to the second push rod 212. In this embodiment, the leakage warning system and the smart sealing gasket are interconnected. When the smart sealing gasket sends a leakage signal, the electric actuator 211 of the sensor 105 near the leakage location is activated. The electric actuator 211 pushes the second push rod 212 into the hydraulic cavity 209, pushing hydraulic oil into the annular hydraulic cavity 202. The cross-sectional ratio of the hydraulic cavity 209 and the annular hydraulic cavity 202 causes each first push rod 204 to generate a large thrust, pushing the push ring 205 to push the flange nut 904. Through the reverse action... By increasing the clamping force of the two pipe flanges 902 around the flange bolt 903, leakage is suppressed and temporarily blocked to prevent the continuation of small leaks and the escalation of the fault. This allows the staff to take immediate action when a leak occurs, avoiding delays in the best troubleshooting time. At the same time, each electric push rod 211 pushes to different degrees, causing the increased clamping force of the pipe flanges 902 to form a fan-shaped array, thereby preventing deformation and damage to the pipe flanges 902 themselves, improving the sealing effect of the leak, and preventing the escalation of the leak accident.

[0023] In summary, during operation, the gasket body 101 and the pipe flange 902 are tightly connected to maintain stable operation of the sealing process. By manufacturing the gasket body 101 by combining two gaskets into one, damage to the gasket body 101 is avoided when installing the various monitoring sensors 116. This preserves the original sealing performance of the gasket body 101 as much as possible and avoids damage to the outer surface of the gasket body 101 caused by additional processing. It also allows the monitoring sensors 116 to be arrayed in the middle of the inner circumference of the gasket body 101, avoiding damage to their performance due to various additional processing. During operation, the leakage early warning system and the intelligent sealing gasket are interconnected. When a leakage gap appears on the mating surface between the gasket body 101 and the pipe flange 902, the intelligent sealing gasket sends a leakage warning. The area through which the leaking material flows is a few areas on the monitoring annular groove 103. The induction sensor 105 in the area senses and accurately marks the leakage location and sends the relevant information outward, allowing the staff to accurately understand the specific location and level of the leakage. The electric actuator 211 of the induction sensor 105 near the leakage location is then activated. The electric actuator 211 pushes the second push rod 212 into the hydraulic cavity 209, pushing hydraulic oil into the annular hydraulic cavity 202. The cross-sectional ratio of the hydraulic cavity 209 and the annular hydraulic cavity 202 causes each first push rod 204 to generate a large thrust and push the push ring 205 to push the flange nut 904. The reaction force increases the clamping force of the two pipe flanges 902 in the area around the flange bolt 903, thereby suppressing and temporarily blocking leakage to avoid the continuation of small leakage and the escalation of the fault. It also allows the staff to take action when leakage occurs, avoiding delays in the best troubleshooting time. At the same time, each electric push rod 211 pushes to different degrees, so that the increased clamping force of the pipe flange 902 forms a fan-shaped array, thereby avoiding deformation and damage to the pipe flange 902 itself, improving the blocking effect of leakage and preventing the escalation of leakage accidents. During operation, the leaked material is smoothly drawn away by the liquid pump and suction hose 112, and guided by the corresponding guide branch pipe 106 and guide main pipe 107, preventing further seepage to the contact surface of the monitoring ring body 102. This assists staff in controlling the leakage, preventing the accident level from escalating, and avoiding additional cleaning work. When the amount of leaked material is large and the suction hose 112 cannot draw it all away, the leaked material is collected and sealed by the split joint 113. The leaked material is then quickly drained away by the liquid pump and discharge main pipe 114, ensuring that the leaked material in the split joint 113 is emptied as much as possible, preventing it from becoming full. This allows staff to open the split joint 113 with limited visibility without interference, and fully utilizes the split joint 113 to isolate the leaked material from the external environment, minimizing environmental pollution.

[0024] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A smart sealing gasket, comprising a gasket body (101) disposed between two pipe flanges (902), each of the two pipe flanges (902) being fixedly connected to a supply pipe (901), the two pipe flanges (902) being connected by a plurality of flange bolts (903) and corresponding flange nuts (904) evenly distributed in a ring array, thereby jointly providing tight contact with the gasket body (101), characterized in that, The outer periphery of the gasket body (101) is fixedly sleeved with a monitoring ring body (102). The inner periphery of both sides of the monitoring ring body (102) is provided with a monitoring annular groove (103). Several partition plates (104) are fixedly connected in a ring array. The side of the partition plate (104) is in close contact with the pipe flange (902). The monitoring annular groove (103) is divided into several areas by the partition plates (104). A sensing sensor (105) is installed on the side of each area of ​​the monitoring annular groove (103) closest to the gasket body (101).

2. The intelligent sealing gasket according to claim 1, characterized in that, The monitoring ring body (102) is equipped with several flow guide pipes (106), each flow guide pipe (106) corresponds to and is connected to each area of ​​the monitoring annular groove (103). The monitoring ring body (102) is equipped with flow guide main pipes (107) on both sides, and each flow guide pipe (106) on each side is connected to the corresponding flow guide main pipe (107).

3. The intelligent sealing gasket according to claim 2, characterized in that, A protective block (117) is fixedly connected to one side of the monitoring ring body (102). Two drain hoses (109) are threaded through the protective block (117). Two connecting pipes (108) are buried on one side of the monitoring ring body (102). The main guide pipe (107) is connected to the corresponding drain hose (109) through the corresponding connecting pipe (108). The two drain hoses (109) are connected to a suction hose (112).

4. The intelligent sealing gasket according to claim 3, characterized in that, The monitoring ring body (102) is embedded with a summary line (110), and a number of monitoring sensors (116) are embedded in the inner peripheral sidewall of the gasket body (101). The sensing sensor (105) and the monitoring sensor (116) are electrically connected to the summary line (110), and the summary line (110) is electrically connected to the transmission line (111).

5. The intelligent sealing gasket according to claim 4, characterized in that, The outer periphery of the pipe flange (902) is provided with a split joint (113), and a buzzer (115) is provided on the outer periphery of the split joint (113). The split joint (113) is connected to a drain pipe (114). The transmission line (111) and the suction hose (112) are both sealed through the side wall of the drain pipe (114). The transmission line (111) is electrically connected to the buzzer (115). The suction hose (112) and the drain pipe (114) are respectively connected to different liquid pumps.

6. A leakage early warning system, in conjunction with an intelligent sealing gasket as described in any one of claims 1-5, characterized in that, It includes several hydraulic bases (201) arranged in a circular array. Each hydraulic base (201) corresponds to a flange bolt (903). The middle of the hydraulic base (201) is provided with a through groove for the flange bolt (903) to pass through. The hydraulic base (201) is located between the flange nut (904) and the pipe flange (902). A push ring (205) is provided between the hydraulic base (201) and the flange nut (904). The push ring (205) and the flange nut (904) are in close contact.

7. A leakage early warning system according to claim 6, characterized in that, Each of the hydraulic bases (201) has an annular hydraulic cavity (202) on the side surface near the flange nut (904). The annular hydraulic cavity (202) is sleeved on the outer circumference of the flange bolt (903) and is coaxial with the flange bolt (903). The opening of the annular hydraulic cavity (202) is sealed and fixedly connected with a sealing ring (206). Several first push rods (204) are movably inserted on each sealing ring (206) and evenly distributed in an annular array. An annular piston (203) is sealed and slidably sleeved inside the annular hydraulic cavity (202). The annular piston (203) is fixedly connected to one end of the first push rod (204), and the other end of the first push rod (204) is fixedly connected to the push ring (205).

8. A leakage early warning system according to claim 6, characterized in that, The hydraulic base (201) is fixedly connected to a hydraulic column (208) on the side away from the flange nut (904). A liquid guiding cavity (207) is embedded in the hydraulic base (201), and a hydraulic cavity (209) is embedded in the hydraulic column (208). The hydraulic cavity (209), the liquid guiding cavity (207), and the annular hydraulic cavity (202) are interconnected and filled with hydraulic oil.

9. A leakage early warning system according to claim 8, characterized in that, The end of the hydraulic cavity (209) is sealed and slidably sleeved with a second push rod (212). An installation cylinder (210) is installed on the hydraulic column (208). An electric push rod (211) is installed inside the installation cylinder (210). The telescopic end of the electric push rod (211) is fixedly connected to the second push rod (212).

10. A leakage early warning system according to claim 6, characterized in that, Each of the hydraulic bases (201) is connected and combined into a ring array structure by connecting blocks (213).

Images