Anti-leakage device of heating, ventilation and fire fighting system

Abstract

The utility model relates to the technical field of pipeline connection anti-leakage, in particular to an anti-leakage device of a heating, ventilation and fire fighting system, which comprises two pipelines, flanges are arranged on the pipelines, the two flanges are connected through a first bolt, a groove is arranged at the end of each pipeline, a first sealing ring is arranged in each groove, and sealing covers are sleeved outside the two flanges. A jacking mechanism is arranged on the sealing cover; the jacking and pressing mechanism is used for jacking and pressing the two flanges and pressing the first sealing ring between the two flanges. Through cooperation of the sealing cover and the jacking mechanism, extra pressure can be applied to the two flanges, the first sealing ring is further pressed, the sealing effect is enhanced, and the anti-leakage performance of the connecting position is remarkably improved; the structure is simple, installation can be achieved without complex operation, the problem of leakage caused by aging of a sealing piece and loosening of a connecting piece in traditional pipeline connection is solved, resource waste can be reduced, the equipment damage probability can be lowered, and stable operation of a heating, ventilation and fire fighting system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection anti-leakage technology, and in particular to an anti-leakage device for HVAC and fire protection systems. Background Technology

[0002] In the field of modern architecture, heating, ventilation, air conditioning (HVAC) and fire protection systems are critical infrastructure for ensuring building safety and a comfortable environment. HVAC systems regulate indoor temperature, humidity, and air quality, while fire protection systems bear the heavy responsibility of controlling fires and protecting lives and property in emergencies such as fires. The proper functioning of both is essential for the realization of building functions.

[0003] Currently, HVAC and fire protection systems extensively utilize pipelines for media transmission, and pipeline connections are high-risk areas for leakage. During long-term use, pipeline connections are affected by factors such as temperature changes, pressure fluctuations, and media corrosion, causing seals to age and connections to loosen, leading to leaks. Leaks not only waste resources but can also damage equipment and disrupt normal system operation.

[0004] In the existing technology, there is a lack of devices that are simple in structure and can increase the anti-leakage effect at pipe connections. Utility Model Content

[0005] To address the current lack of simple and effective leak-proof devices for pipe connections, this utility model provides a leak-proof device for HVAC and fire protection systems.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A leak-proof device for HVAC and fire protection systems includes two pipes, each with flanges connected by bolts. Grooves are provided at the ends of the pipes, and a sealing ring is placed within each groove. Sealing caps are fitted over the flanges. A pressing mechanism is mounted on the sealing caps to press against the two flanges, tightening the sealing ring. The cooperation between the sealing caps and the pressing mechanism applies additional pressure to the two flanges, further tightening the sealing ring and enhancing the sealing effect, significantly improving the leak-proof performance at the connection. Its simple structure allows for installation without complex operations. It solves the problem of leakage caused by aging seals and loose connections in traditional pipe connections, reduces resource waste, lowers the probability of equipment damage, and ensures the stable operation of the HVAC and fire protection system.

[0008] Preferably, the sealing cover includes a first half-cover and a second half-cover, both of which are semi-circular in shape. Both the first and second half-covers have annular grooves on their inner sides to fit the flange. The first and second half-covers are detachably connected. The sealing cover's design, with its detachable first and second half-covers, allows for quick and easy installation onto the outside of the flange, significantly reducing installation difficulty and operational space limitations compared to an integral sealing cover. The inner annular groove fits tightly with the flange, not only accurately positioning the sealing cover but also further enhancing the seal between the sealing cover and the flange. The detachable connection between the first and second half-covers facilitates flexible assembly according to site requirements during installation and allows for easy inspection and replacement of the sealing cover or the inner sealing ring later, improving the ease of device maintenance. This modular structure also helps reduce production, transportation, and storage costs.

[0009] Preferably, the first half-cover has inserts at both ends; the second half-cover has slots at both ends that cooperate with the inserts; the inserts are fixed by pins after being inserted into the slots. The inserts of the first half-cover and the slots of the second half-cover cooperate to form a precise positioning structure, enabling quick alignment when the two half-covers are spliced, greatly improving installation efficiency; the pins are fixed by pins after being inserted into the slots. This connection method is not only simple to operate and has a stable connection, but also effectively prevents the sealing cover from loosening or shifting during use, ensuring the continuous pressure of the top pressure mechanism on the flange and enhancing the sealing effect; at the same time, the pin fixing method facilitates disassembly, and when it is necessary to inspect or replace the internal components of the sealing cover, the two half-covers can be easily separated, reducing maintenance difficulty. Moreover, the combination structure of inserts-slots-pins is simple, reliable, and inexpensive, and is suitable for various installation scenarios.

[0010] Preferably, both the first and second half-covers are provided with clearance grooves to accommodate bolts. These clearance grooves precisely fit the bolts, allowing the sealing cover to be directly fitted onto the outside of the flange without disassembling the original flange connection bolts during installation. This effectively avoids the risk of loosening or seal failure caused by disassembling the bolts. This design not only simplifies the installation process and saves time but also ensures that the bolts function properly to fasten the flange, resulting in a tight fit between the sealing cover and the flange. This, in turn, ensures effective compression of the sealing ring by the pressure mechanism, comprehensively improving the leak-proof performance of the HVAC and fire protection system pipe connections.

[0011] Preferably, the pressure-pressing mechanism includes several threaded holes formed on the first and second half-covers; a pressure-pressing component is threaded into the threaded holes; and a relief groove is provided on both the first and second half-covers to cooperate with the pressure-pressing component. By forming threaded holes on the first and second half-covers and utilizing the threaded pressure-pressing component, the pressure-pressing mechanism can flexibly adjust the pressure applied to the flange, precisely controlling the tightness of the sealing ring according to actual working conditions, effectively enhancing the sealing effect. The relief groove provided with the pressure-pressing component provides movement space for the component, ensuring it can smoothly apply pressure to the flange, and also prevents interference between the pressure-pressing component and the sealing cover during adjustment, ensuring smooth pressure-pressing operation. This structure is simple and easy to adjust, achieving stable pressure-pressing of the flange without complex tools, further improving the leak-proof performance and applicability of the piping connection parts in the HVAC and fire protection system.

[0012] Preferably, the pressure-pressing component includes two bolts; bolt two has a groove; two wedge-shaped washers are slidably mounted on bolt two; and a sliding platform is provided on the wedge-shaped washers to cooperate with the groove. The pressure-pressing component uses a design of bolt two and wedge-shaped washers, allowing for pressure-pressing of the flange by rotating bolt two, which is simple and easy to control. The groove on bolt two and the sliding platform of the wedge-shaped washers cooperate with each other, allowing the wedge-shaped washers to slide on bolt two. During the pressure-pressing process, the wedge-shaped washers can automatically adjust their angle and position according to the actual surface conditions of the flange, ensuring uniform pressure and avoiding uneven local stress that could lead to sealing failure. Simultaneously, the double wedge-shaped washer structure enhances the stability and reliability of the pressure-pressing process, further improving the compression effect on the sealing ring one, effectively improving the leak-proof performance of the piping connection parts of the HVAC and fire protection system. Furthermore, this structure is easy to install and adjust, and adaptable to flange connection scenarios of different specifications.

[0013] Preferably, the wedge-shaped gasket is positioned on the outside of the flange; a second annular groove is formed along the flange edge; and a second sealing ring is installed within the second annular groove. The wedge-shaped gasket, positioned on the outside of the flange, can evenly distribute the pressure from the top pressure component to the flange through its wedge-shaped structure, enhancing the stability of the pressure. Combined with the second annular groove along the flange edge and the built-in second sealing ring, an additional sealing barrier is formed on the outside of the flange, creating a double sealing structure with the first sealing ring within the groove. This design not only effectively prevents media leakage from the flange edge but also utilizes the top pressure of the wedge-shaped gasket to further compress the second sealing ring, ensuring a tight fit against the groove wall. Even under complex conditions such as temperature changes and pressure fluctuations, it significantly improves the sealing performance of pipe connections in HVAC and fire protection systems, reduces the risk of leakage, and ensures stable system operation.

[0014] Preferably, the jacking mechanism further includes a linkage component and a drive component; the linkage component connects several jacking components; the drive component connects one of the jacking components; the linkage component includes several synchronous belts; the bolts of two adjacent jacking components are connected by a synchronous belt. The added linkage component and drive component of the jacking mechanism connect the bolts of adjacent jacking components via synchronous belts. By operating the drive component to drive one of the jacking components, the synchronous rotation of multiple jacking components can be achieved using the transmission characteristics of the synchronous belts, ensuring uniform jacking pressure applied to all parts of the flange and avoiding seal failure due to uneven local jacking pressure. This design significantly simplifies the jacking operation process, improves installation efficiency, reduces errors from manual adjustment, ensures stable compression of the sealing ring by the jacking mechanism, effectively improves the leak-proof performance of pipe connections in HVAC and fire protection systems, and features a compact structure and convenient maintenance, suitable for sealing and reinforcement needs of various pipe specifications.

[0015] Preferably, the drive assembly includes a motor; the motor is mounted on the second half-cover; the motor output is connected to bolt two of one of the pressing components via a synchronous belt drive unit. The drive assembly uses a motor as a power source, is mounted on the second half-cover, and is connected to bolt two of the pressing component via a synchronous belt drive unit, thus automating the pressing operation. Compared to traditional manual adjustment methods, motor drive can precisely control the pressing pressure and speed, avoiding uneven pressing or excessive tightness / looseness caused by improper manual operation, ensuring that each pressing component applies stable and consistent pressure to the flange, thereby effectively enhancing the sealing effect of the sealing ring; at the same time, motor drive can significantly improve installation efficiency, reduce manpower input, reduce labor intensity, and adapt to the rapid adjustment needs under different working conditions, further improving the intelligence level and practicality of the anti-leakage device for pipe connections in HVAC and fire protection systems.

[0016] Preferably, the pressure-pressing mechanism further includes a pressure sensor disposed between the two flanges; the pressure sensor is connected to a controller; the controller is connected to a motor. The pressure sensor, controller, and motor added to the pressure-pressing mechanism form an intelligent closed-loop control system. The pressure sensor monitors the pressure data between the two flanges in real time and transmits the information to the controller. The controller precisely controls the motor operation according to a preset pressure threshold, automatically adjusting the pressure exerted by the pressure-pressing component on the flanges. This design avoids the errors and lags of manual adjustment, ensuring that the sealing ring is always under optimal pressure, significantly improving the sealing effect. At the same time, during pipeline operation, the system can dynamically respond to pressure changes, promptly compensating for pressure attenuation caused by temperature fluctuations, media flow, and other factors, continuously ensuring the leak-proof performance of the HVAC and fire protection system pipeline connections, enhancing the stability and reliability of the device, and reducing manual inspection and maintenance costs.

[0017] The beneficial effects of this utility model are:

[0018] The combination of the sealing cap and the top pressure mechanism can apply additional pressure to the two flanges, further tightening the sealing ring and enhancing the sealing effect, significantly improving the anti-leakage performance of the connection. Its simple structure allows for installation without complicated operations, solving the problem of leakage caused by aging seals and loose connections in traditional pipe connections. It also reduces resource waste, lowers the probability of equipment damage, and ensures the stable operation of the HVAC and fire protection system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the present invention after removing the linkage component and the drive component.

[0021] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the connection structure of the two pipes of this utility model.

[0023] Figure 5 This is a schematic diagram of the sealing cover and top pressure component of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the second half cover of this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the first half-cover of this utility model.

[0026] Figure 8 This is a schematic diagram of the top pressure component of this utility model.

[0027] In the diagram: 1-Flange, 2-Pipe, 3-Sealing ring one, 4-Sealing cap, 5-Bolt one, 6-Threaded hole, 7-Pressure piece, 8-Sealing ring two, 9-Motor, 10-Synchronous belt;

[0028] 201-Groove, 202-Circular groove two; 401-First half cover, 402-Second half cover, 403-Circular groove one, 404-Insertion block, 405-Slot, 406-Pin, 407-Relief groove one, 408-Relief groove two; 701-Bolt two, 702-Slide groove, 703-Wedge washer. Detailed Implementation

[0029] The present invention will now be described and illustrated in detail with reference to the embodiments.

[0030] Example 1

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, a leak-proof device for a heating, ventilation and fire protection system includes two pipes 2, each pipe 2 having a flange 1 connected by bolts 5. A groove 201 is provided at the end of each pipe 2, and a sealing ring 3 is provided within the groove 201. A sealing cover 4 is fitted over the two flanges 1. A pressing mechanism is provided on the sealing cover 4. The pressing mechanism is used to press against the two flanges 1, tightening the sealing ring 3 between the two flanges 1.

[0032] The cooperation between the sealing cap 4 and the top pressure mechanism can apply additional pressure to the two flanges 1, further tighten the sealing ring 3, enhance the sealing effect, and significantly improve the anti-leakage performance of the connection. Its structure is simple and can be installed without complicated operation. It not only solves the problem of leakage caused by aging of seals and loosening of connectors in traditional pipe 2 connections, but also reduces resource waste, lowers the probability of equipment damage, and ensures the stable operation of the HVAC and fire protection system.

[0033] like Figure 5-7 As shown, the sealing cover 4 includes a first half-cover 401 and a second half-cover 402, both of which are semi-circular in shape. Both the first half-cover 401 and the second half-cover 402 have annular grooves 403 on their inner sides that mate with flanges 1. The first half-cover 401 and the second half-cover 402 are detachably connected. The first half-cover 401 has inserts 404 at both ends; the second half-cover 402 has slots 405 at both ends that mate with the inserts 404. The inserts 404 are inserted into the slots 405 and fixed by pins 406. Both the first half-cover 401 and the second half-cover 402 have clearance grooves 407 that mate with bolts 5.

[0034] The sealing cover 4 adopts a detachable first half cover 401 and second half cover 402 design. The semi-circular ring structure makes it easy to quickly fit onto the outside of the flange 1. Compared with the integral sealing cover 4, it significantly reduces the installation difficulty and operating space limitation. The inner circular groove 403 fits tightly with the flange 1, which can not only accurately position the sealing cover 4, but also further enhance the sealing performance between the sealing cover 4 and the flange 1. The detachable connection between the first half cover 401 and the second half cover 402 not only facilitates flexible assembly according to the site requirements during installation, but also facilitates the later inspection and replacement of the sealing cover 4 or the internal sealing ring 3, improving the convenience of device maintenance. At the same time, this modular structure also helps to reduce production, transportation and storage costs. The insert block 404 of the first half-cover 401 and the slot 405 of the second half-cover 402 cooperate to form a precise positioning structure, enabling quick alignment when the two half-covers are spliced, greatly improving installation efficiency. After the insert block 404 is inserted into the slot 405, it is fixed by the pin 406. This connection method is not only simple to operate and has a stable connection, but also effectively prevents the sealing cover 4 from loosening and shifting during use, ensuring the continuous pressure of the top pressure mechanism on the flange 1 and enhancing the sealing effect. At the same time, the fixing method of the pin 406 is convenient for disassembly. When it is necessary to inspect or replace the internal parts of the sealing cover 4, the two half-covers can be easily separated, reducing maintenance difficulty. Moreover, the combination structure of insert block 404-slot 405-pin 406 is simple, reliable, and inexpensive, and is suitable for a variety of installation scenarios. The clearance grooves 407 on the first half-cover 401 and the second half-cover 402 precisely fit the bolts 5, allowing the sealing cover 4 to be directly fitted onto the outside of the flange 1 without removing the original flange 1 connecting bolts during installation. This effectively avoids the risk of loosening of the connection or failure of the seal due to the removal and installation of bolts 5. This design not only simplifies the installation process and saves installation time, but also ensures that bolts 5 can properly perform their function of fastening flange 1, so that the sealing cover 4 and flange 1 are tightly connected and fit together. This ensures that the top pressure mechanism effectively presses the sealing ring 3, and comprehensively improves the anti-leakage performance of the connection of the HVAC fire protection system pipe 2.

[0035] like Figure 5 and Figure 8 As shown, the pressing mechanism includes several threaded holes 6 formed on the first half-cover 401 and the second half-cover 402; pressing members 7 are threadedly provided in the threaded holes 6; both the first half-cover 401 and the second half-cover 402 are provided with relief grooves 408 to cooperate with the pressing members 7. The pressing member 7 includes a bolt 701; a sliding groove 702 is provided on the bolt 701; two wedge-shaped washers 703 are slidably provided on the bolt 701; a sliding table is provided on the wedge-shaped washers 703 to cooperate with the sliding groove 702. The wedge-shaped washers 703 are located on the outside of the flange 1; a circular groove 202 is formed at the edge of the flange 1; a sealing ring 8 is provided in the circular groove 202.

[0036] The pressure-pressing mechanism, through threaded holes 6 on the first half-cover 401 and the second half-cover 402, and utilizing the threaded pressure-pressing component 7, can flexibly adjust the pressure applied to the flange 1. It can precisely control the tightness of the sealing ring 3 according to actual working conditions, effectively enhancing the sealing effect. The relief groove 408, designed to complement the pressure-pressing component 7, provides space for the component to move, ensuring it can smoothly apply pressure to the flange 1, and prevents interference between the pressure-pressing component 7 and the sealing cover 4 during adjustment, ensuring smooth pressure-pressing operation. This structure is simple and easy to adjust, achieving stable pressure on the flange 1 without complex tools, further improving the leak-proof performance and applicability of the connection points of the HVAC and fire protection system pipes 2. The pressure-pressing component 7 uses a bolt 701 in conjunction with a wedge-shaped washer 703; the pressure-pressing operation on the flange 1 can be achieved by rotating the bolt 701, which is simple and easy to control. The groove 702 on bolt 2 701 and the sliding platform of wedge washer 703 cooperate with each other, allowing wedge washer 703 to slide on bolt 2 701. During the top pressure process, wedge washer 703 can automatically adjust its angle and position according to the actual surface of flange 1 to ensure uniform pressure and avoid uneven local force leading to seal failure. At the same time, the double wedge washer 703 structure enhances the stability and reliability of top pressure, further improves the compression effect of sealing ring 1 3, and effectively improves the anti-leakage performance of the connection of HVAC fire protection system pipe 2. Moreover, this structure is easy to install and adjust and is suitable for connection scenarios of flange 1 of different specifications. The wedge washer 703 is set on the outside of flange 1 and can evenly distribute the pressure of top pressure component 7 to flange 1 through its own wedge structure, enhancing the stability of top pressure. With the annular groove 202 opened on the edge of flange 1 and the built-in sealing ring 2 8, an additional sealing line can be formed on the outside of flange 1, forming a double sealing structure with sealing ring 1 3 in groove 201. This design not only effectively prevents the medium from leaking from the edge of flange 1, but also uses the top pressure of wedge gasket 703 to further compress sealing ring 2 8, making it fit tightly against the groove wall. Even under complex working conditions such as temperature changes and pressure fluctuations, it can significantly improve the sealing performance of the connection of HVAC fire protection system pipe 2, reduce the risk of leakage, and ensure the stable operation of the system.

[0037] In other alternative embodiments, the pressing element of the pressing mechanism is replaced by a bolt with the bolt threaded in the threaded hole 6, and the bolt end presses against the side of the flange 1.

[0038] Example 2

[0039] like Figure 1As shown, based on Embodiment 1, the pressing mechanism further includes a linkage component and a drive component; the linkage component connects several pressing members 7; the drive component connects one of the pressing members 7; the linkage component includes several synchronous belts 10; the bolts 701 of two adjacent pressing members 7 are connected by a synchronous belt 10. A synchronous pulley is provided on the bolt 701, and the key of the synchronous pulley is disposed in a groove 702. The bolt passes through the key and is threaded at the bottom of the groove 702. The drive component includes a motor 9; the motor 9 is disposed on the second half-cover 402; the output end of the motor 9 is connected to the bolt 701 of one of the pressing members 7 via a synchronous belt drive unit. The pressing mechanism also includes a pressure sensor disposed between two flanges 1; the pressure sensor is connected to a controller; the controller is connected to the motor 9.

[0040] The added linkage and drive components of the jacking mechanism connect the bolts 701 of adjacent jacking components 7 via a synchronous belt 10. By operating the drive component to move one jacking component 7, the synchronous belt 10 can be used to achieve synchronous rotation of multiple jacking components 7, ensuring uniform jacking pressure on all parts of the flange 1 and preventing seal failure due to uneven local jacking pressure. This design significantly simplifies the jacking operation process, improves installation efficiency, reduces errors from manual adjustment, ensures stable compression of the sealing ring by the jacking mechanism, effectively improves the leak-proof performance of the connection points of the HVAC and fire protection system pipes 2, and features a compact structure and convenient maintenance, suitable for sealing and reinforcement needs of various pipe specifications 2. The drive component uses a motor 9 as the power source, installed on the second half-cover 402, and is connected to the bolts 701 of the jacking component 7 via the synchronous belt 10 transmission unit, thus automating the jacking operation. Compared to traditional manual adjustment, the motor 9 drive can precisely control the pressure and speed of the jacking mechanism, avoiding uneven pressure or excessive tightness caused by improper manual operation. This ensures that each jacking component 7 applies stable and consistent pressure to the flange 1, effectively enhancing the sealing effect of the sealing ring. Simultaneously, the motor 9 drive significantly improves installation efficiency, reduces manpower, lowers labor intensity, and can adapt to rapid adjustment needs under different working conditions, further enhancing the intelligence and practicality of the anti-leakage device at the connection of the HVAC and fire protection system pipes 2. The pressure sensor and controller added to the jacking mechanism form an intelligent closed-loop control system with the motor 9. The pressure sensor monitors the pressure data between the two flanges 1 in real time and transmits the information to the controller. The controller precisely controls the operation of the motor 9 according to the preset pressure threshold, automatically adjusting the jacking pressure of the jacking component 7 on the flange 1. This design avoids the errors and lags of manual adjustment, ensuring that the sealing ring is always under optimal pressure, significantly improving the sealing effect. At the same time, during the operation of pipe 2, the system can dynamically respond to pressure changes, promptly compensate for pressure attenuation caused by factors such as temperature fluctuations and medium flow, continuously ensure the anti-leakage performance of the connection of pipe 2 in the HVAC and fire protection system, enhance the stability and reliability of the device, and reduce manual inspection and maintenance costs.

Claims

1. A leak-proof device for a heating, ventilation, and fire protection system, comprising two pipes (2), each pipe (2) having a flange (1), the two flanges (1) being connected by bolts (5), and a groove (201) being provided at the end of the pipe (2), wherein a sealing ring (3) is provided in the groove (201), characterized in that, Two flanges (1) are fitted with sealing caps (4); a pressing mechanism is provided on the sealing caps (4); the pressing mechanism is used to press the two flanges (1) and tighten the sealing ring (3) between the two flanges (1).

2. The anti-leakage device for HVAC and fire protection systems according to claim 1, characterized in that, The sealing cover (4) includes a first half cover (401) and a second half cover (402) that are both semi-circular in shape; the inner sides of the first half cover (401) and the second half cover (402) are provided with an annular groove (403) fitted by the flange (1); the first half cover (401) and the second half cover (402) are detachably connected.

3. The leak barrier for heating, ventilation, and fire protection systems of claim 2, wherein, The first half cover (401) has inserts (404) at both ends; the second half cover (402) has slots (405) at both ends that cooperate with the inserts (404); the inserts (404) are inserted into the slots (405) and then fixed by pins (406).

4. The leak barrier for heating, ventilation, and fire protection systems of claim 3, wherein, Both the first half cover (401) and the second half cover (402) are fitted with a relief groove (407) by bolt (5).

5. The leak barrier for heating, ventilation, and fire protection systems of claim 4, wherein, The pressing mechanism includes several threaded holes (6) opened on the first half cover (401) and the second half cover (402); the threaded holes (6) are provided with pressing parts (7) in the internal threads; the first half cover (401) and the second half cover (402) are provided with relief grooves (408) in cooperation with the pressing parts (7).

6. The leak barrier for heating, ventilation, and fire protection systems of claim 5, wherein, The top pressing component (7) includes bolt two (701); a groove (702) is provided on bolt two (701); two wedge-shaped washers (703) are slidably provided on bolt two (701); a sliding table is provided on the wedge-shaped washers (703) in conjunction with the groove (702).

7. The leak barrier for heating, ventilation, and fire protection systems of claim 6, wherein, A wedge gasket (703) is placed on the outside of the flange (1); a circular groove (202) is provided on the edge of the flange (1); a sealing ring (8) is provided in the circular groove (202).

8. The leak barrier for a heating and fire protection system according to claim 7, characterized in that The pressing mechanism also includes a linkage component and a drive component; the linkage component connects several pressing parts (7); the drive component connects one of the pressing parts (7); the linkage component includes several synchronous belts (10); the bolts (701) of two adjacent pressing parts (7) are connected by a synchronous belt (10).

9. The leak barrier for a heating and fire protection system according to claim 8, characterized in that The drive assembly includes a motor (9); the motor (9) is mounted on the second half cover (402); the output end of the motor (9) is connected to bolt two (701) of one of the top pressing parts (7) via a synchronous belt drive unit.

10. The leak barrier for a heating and fire protection system according to claim 8, characterized in that The top pressure mechanism also includes a pressure sensor disposed between two flanges (1); the pressure sensor is connected to a controller; the controller is connected to a motor (9).

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