A quick plug clamp for compressed air lines

Abstract

The utility model belongs to pipeline leak stoppage technical field provides a kind of quick leak stop clamp for compressed air pipeline, including open-close type annular frame, inflatable sealing assembly, axial limiting component, static sealing component and sealing glue are installed in the inside of open-close type annular frame in turn along sealing force direction, wherein, sealing force direction is from open-close type annular frame radial direction inward, it is directed to compressed air pipeline center. The utility model can realize quick installation, and effectively reduce pipeline leakage rate by four-stage sealing structure.

Description

Technical Field

[0001] This application relates to the field of pipeline leak sealing technology, and in particular to a quick leak sealing clamp for compressed air pipelines. Background Technology

[0002] Compressed air systems are the core power source in cigarette manufacturing processes, providing power to pneumatic equipment in several key stages, including tobacco processing, cigarette making, packaging, and logistics. The piping network of this system typically needs to operate stably at pressures of 0.6-1.6 MPa or even higher. However, due to vibration fatigue from long-term pressure fluctuations, internal corrosion caused by moisture and impurities in the air, residual stress from installation, and even physical damage from careless third-party construction, pipelines are prone to leaks such as pinholes, cracks, or seal failure at threaded / flange connections. Statistics show that leaks in compressed air systems can typically account for 20% to 30% of the total compressed air production. This not only results in significant energy waste but also directly leads to a drop in system pressure, affecting the operating efficiency and stability of pneumatic equipment.

[0003] To address these leakage problems, existing leak-sealing technologies can be mainly divided into two categories: temporary emergency repairs and permanent repairs. Temporary emergency repairs typically include wrapping the leak point with sealing tape, performing emergency welding to seal it, or installing traditional clamps. However, these methods often have significant limitations: for example, sealing tapes and traditional clamps often rely on a single rubber gasket or bolt radial compression to achieve a seal, resulting in poor adaptability. Under irregular pipe surfaces or continuous high-pressure impacts, the sealing effect is unreliable, and leaks are prone to recurrence. Furthermore, traditional clamps usually require tightening multiple bolts, making the installation process time-consuming and labor-intensive, and difficult to meet the needs of rapid response. Permanent repairs, on the other hand, require shutting down the relevant pipe sections for replacement, welding, or reconnection. This is not only a complex procedure but also means that the production line must be shut down, which can lead to significant production losses during peak cigarette production seasons.

[0004] Traditional clamp-type leak-sealing fixtures, in particular, often have a relatively simple structural design. They mostly rely on a single rubber gasket and multiple bolts to provide radial clamping force for sealing. This structure is highly susceptible to seal failure when dealing with uneven pipe surfaces, ellipticity deviations, or frequent pressure fluctuations due to uneven clamping force distribution or fatigue loosening. Furthermore, the bolt-tightening method is inefficient, significantly increasing the difficulty of emergency repairs by a single person, and failing to meet the stringent requirements of modern cigarette factories for rapid damage control and minimal downtime.

[0005] In addition, to improve the efficiency and effectiveness of temporary emergency repairs, industry technicians have continuously developed various leak-sealing devices. For example, patent application CN120650570A discloses a pipeline leak-sealing device and method. The device includes a leak-sealing clamp; the clamp comprises two sets of semi-circular clamps that together hold the outer wall of the pipeline. The inner wall of each semi-circular clamp is provided with a rubber sealing gasket. Leak-sealing fixing mechanisms are installed on both sides of the top semi-circular clamp. Through the coordinated use of a drive assembly, connecting rod, fixing screw, and fixing nut, the drive assembly moves the connecting rod downwards, simultaneously moving the bottom fixing screw downwards. The operator then fixes the fixing nut to the outside of the bottom end of the fixing screw. The drive assembly then moves the threaded rod upwards, creating a relative force between the two sets of semi-circular clamps. This pressure exerted by the semi-circular clamps on the rubber sealing gasket seals the pipeline leak, allowing for quick and effective leak sealing operations and improving overall ease of operation and practicality. However, the overall structure of the device (such as the size of the drive components and the installation space for the airbag) may not be suitable for the narrow installation space in cigarette factories (such as pipe wells and under equipment), resulting in insufficient operational flexibility. Furthermore, the clamping force of the semi-circular clamp is provided by the leak-sealing and fixing mechanism. If the pipe surface is uneven (such as due to scaling or corrosion), the clamping force will be unevenly distributed, which may easily lead to seal failure. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a quick-sealing clamp for compressed air pipelines, which enables rapid installation and effectively reduces pipeline leakage rates through a four-stage sealing structure.

[0007] To achieve the above and related objectives, this utility model provides a quick leak-sealing clamp for compressed air pipelines, comprising an openable annular frame, an inflatable sealing component, an axial limiting component, a static sealing component, and a sealant, which are sequentially installed inside the openable annular frame along the direction of the sealing force. The direction of the sealing force is radially inward from the openable annular frame, pointing towards the center of the compressed air pipeline.

[0008] Furthermore, the openable ring frame includes an upper ring body and a lower ring body, with one end of the upper ring body and the lower ring body hinged together and the other end connected by a locking member.

[0009] Furthermore, the inflatable sealing assembly includes an airbag component with an annular structure. An installation part and an inflation port are provided on the inner side of the openable annular frame. The airbag component is installed on the inner side of the openable annular frame through the installation part and communicates with the inflation port.

[0010] Furthermore, the inflatable sealing assembly also includes a filler attached to the inside of the airbag.

[0011] Furthermore, a silicone strip is provided inside the filler.

[0012] Furthermore, the locking component includes a rotating collar mounted on the upper ring body, a locking rod connected to the rotating collar, and a locking buckle mounted on the lower ring body. The rotating collar drives the locking rod to engage or disengage with the locking buckle.

[0013] Furthermore, the axial limiting assembly includes metal toothed rings respectively mounted on both sides of the mounting portion.

[0014] Furthermore, the static sealing assembly includes a sealing ring disposed inside the metal toothed ring.

[0015] Furthermore, a filling gap is provided between the sealing ring and the side of the filler, and the sealant is filled in the filling gap.

[0016] Furthermore, the sealant is an anaerobic sealant.

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

[0018] This invention utilizes a hinged opening and closing structure of an openable ring frame in conjunction with a locking component to achieve rapid installation without tools, significantly improving emergency repair efficiency in case of leaks and solving the problem of time-consuming and laborious traditional bolt tightening. Furthermore, it employs a four-stage sealing design consisting of an inflatable sealing component, an axial limiting component, a static sealing component, and sealant. After the airbag is inflated, an initial seal is formed through the filling component. Under the combined action of the radial clamping force generated by the locking component and the airbag expansion force, the teeth of the metal toothed ring embed into the outer wall of the pipe, forming a circumferential mechanical engagement, preventing the clamp from sliding axially under pipe pressure. Simultaneously, the sealing ring and sealant further fill tiny gaps, dynamically compensating for minor gaps caused by long-term aging and wear of the seals, effectively reducing the leakage rate. Attached Figure Description

[0019] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of an exemplary quick-sealing fixture structure according to this application;

[0021] Figure 2 This is a schematic diagram of another exemplary quick-sealing fixture structure in this application;

[0022] Figure 3 This is a cross-sectional view of the quick-sealing fixture of this application.

[0023] Figure Labels

[0024] 1: Upper ring body; 2: Lower ring body; 3: Locking rod; 4: Protruding post; 5: Locking buckle; 6: Hinge; 7: Metal toothed ring; 8: Sealing ring; 9: Inflation port; 10: Collar; 11: Filler; 12: Silicone strip; 13: Airbag component; 14: Hinge end. Detailed Implementation

[0025] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of this invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. Conversely, multiple features of this invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of this invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The present invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of this invention are for illustrative purposes only and should not be construed as limiting the scope of protection of this invention. All equivalent changes or modifications made in accordance with the spirit and essence of this invention should be covered within the scope of protection of this invention.

[0026] like Figures 1 to 3 As shown, this application discloses a quick leak-sealing clamp for compressed air pipelines, comprising an openable annular frame, an inflatable sealing assembly, an axial limiting assembly, a static sealing assembly, and a sealant, which are sequentially installed inside the openable annular frame along the direction of the sealing force. The direction of the sealing force is radially inward from the openable annular frame, pointing towards the center of the compressed air pipeline.

[0027] Furthermore, the opening and closing ring frame includes an upper ring body 1 and a lower ring body 2. One end of the upper ring body 1 and the lower ring body 2 is set as a hinge end 14. The two hinge ends 14 are rotatably connected together by a hinge member 6. The other ends of the upper ring body 1 and the lower ring body 2 are connected by a locking member. The hinge member 6 includes, but is not limited to, hinges and pins. This application utilizes the hinge member 6 as a rotation axis, allowing the upper ring body 1 or the lower ring body 2 to rotate around it, thereby achieving the regular opening and closing of the frame. Figure 1 and Figure 2As shown, the locking mechanism of this application also includes a protruding post 4 fixedly connected to the end of the upper ring body 1 and a locking buckle 5 fixedly connected to the end of the lower ring body 2. A rotating collar 10 is rotatably connected to the outer side of the protruding post 4, and a locking rod 3 is fixedly connected to one side of the rotating collar 10. The rotating collar 10 drives the locking rod 3 to engage or disengage with the locking buckle 5. In this application, when the clamp is closed, the rotating collar 10 rotates, causing the locking rod 3 to engage with the locking buckle 5. This process utilizes the lever principle to efficiently convert the rotational force into a radial clamping force, replacing the traditional solution that requires tightening bolts one by one, and achieving tool-free, quick installation and locking.

[0028] Furthermore, such as Figure 2 and Figure 3 As shown, the inflatable sealing assembly includes an annular airbag 13. An installation part and an inflation port 9 are provided inside the openable annular frame. The airbag 13 is installed inside the openable annular frame via the installation part and communicates with the inflation port 9. The inflatable sealing assembly also includes a filler 11 connected to the inside of the airbag 13, and a silicone strip 12 is disposed inside the filler 11. Furthermore, the airbag 13 in this application is made of nitrile rubber. In this application, the airbag 13 is inflated through the inflation port 9. When inflated, the airbag 13 compresses the inner filler 11, causing the silicone strip 12 to deform. This flexible deformation automatically matches the pipeline's working pressure, effectively filling irregularities such as dents and rust on the pipeline surface, forming an initial, adaptive, tight fit, and preventing overpressure damage to the pipeline.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the axial limiting assembly of this application includes metal toothed rings 7 respectively installed on both sides of the mounting portion. When the airbag 13 is inflated, under the combined action of the radial clamping force generated by the locking member and the expansion force of the airbag 13, the teeth of the metal toothed rings 7 will embed into the outer wall of the pipe, thereby forming a circumferential mechanical engagement, thus preventing the clamp from sliding axially under the pipe pressure, and at the same time providing solid rigid support for the entire clamp, avoiding angular displacement due to pressure fluctuations.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the static sealing assembly of this application includes a sealing ring 8, which is disposed inside the metal toothed ring 7. The sealing ring 8 of this application has a smooth and tight fit with the outer wall of the pipeline, forming a reliable static sealing barrier to prevent media leakage. Furthermore, the metal toothed ring 7 can form a double radial constraint with the sealing ring 8, ensuring uniform specific pressure on the sealing surface and meeting the sealing requirements under high-pressure conditions.

[0031] Furthermore, a filling gap is provided between the sealing ring 8 and the side of the filler 11, and the sealant is filled in the filling gap. The sealant is an anaerobic sealant. Anaerobic sealant will cure in an oxygen-deficient environment (such as inside a gap) to form an elastic sealing layer. Its main purpose is to dynamically compensate for the small gaps caused by the aging and wear of the sealing components (such as silicone strip 12 and sealing ring 8) after long-term use, thereby improving the reliability and lifespan of the fixture under long-term use.

[0032] Furthermore, the method of using the quick-sealing clamp of this application is as follows:

[0033] 1. At the pipeline leak point, open the hinged upper ring 1 and lower ring 2 and place them over the leak. Close the rings and rotate the rotating collar 10 to engage the locking rod 3 with the locking buckle 5, achieving quick initial fixation.

[0034] 2. Inflate the airbag component 13 through the inflation port 9. The airbag component 13 expands and first squeezes the inner filler 11 and silicone strip 12, making them fit tightly against the pipe surface and filling the irregular areas to form an initial seal.

[0035] 3. The combined action of airbag pressure and locking force causes the metal toothed rings 7 on both sides to bite into the pipe wall, preventing axial slippage; at the same time, the sealing ring 8 is pressed against the pipe wall, and the sealant fills the micro gaps. At this time, the four-stage sealing structure works synergistically.

[0036] 4. The airbag component 13 is made of nitrile rubber, and its inflation pressure can adapt to the working pressure of the pipeline to avoid overpressure damage to the pipeline.

[0037] Furthermore, the quick-sealing clamp of this application is suitable for quick leak prevention in compressed air pipelines of cigarette factories.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A quick-sealing clamp for compressed air pipelines, characterized in that, The device includes an openable annular frame, and an inflatable sealing assembly, an axial limiting assembly, a static sealing assembly, and a sealant, which are sequentially installed inside the openable annular frame along the direction of the sealing force. The direction of the sealing force is radially inward from the openable annular frame and points towards the center of the compressed air pipeline.

2. The quick-sealing clamp according to claim 1, characterized in that, The openable ring frame includes an upper ring body (1) and a lower ring body (2). One end of the upper ring body (1) and the lower ring body (2) are hinged together, and the other end is connected by a locking member.

3. The quick-sealing clamp according to claim 1, characterized in that, The inflatable sealing assembly includes an airbag component (13) with an annular structure. The inner side of the openable annular frame is provided with an installation part and an inflation port (9). The airbag component (13) is installed on the inner side of the openable annular frame through the installation part and communicates with the inflation port (9).

4. The quick-sealing clamp according to claim 3, characterized in that, The inflatable sealing assembly also includes a filler (11) connected to the inside of the airbag (13).

5. The quick-sealing clamp according to claim 4, characterized in that, A silicone strip (12) is provided inside the filler (11).

6. The quick-sealing clamp according to claim 2, characterized in that, The locking component includes a rotating collar (10) mounted on the upper ring body (1), a locking rod (3) connected to the rotating collar (10), and a locking buckle (5) mounted on the lower ring body (2). The rotating collar (10) drives the locking rod (3) to engage or disengage from the locking buckle (5).

7. The quick-sealing clamp according to claim 5, characterized in that, The axial limiting assembly includes metal toothed rings (7) respectively installed on both sides of the mounting portion.

8. The quick-sealing clamp according to claim 7, characterized in that, The static sealing assembly includes a sealing ring (8) disposed inside the metal toothed ring (7).

9. The quick-sealing clamp according to claim 8, characterized in that, A filling gap is provided between the sealing ring (8) and the side of the filler (11), and the sealant is filled in the filling gap.

10. The quick-sealing clamp according to claim 9, characterized in that, The sealant is an anaerobic sealant.

Images