Open seal ring for pipe connection, method of installation and sealing assembly

Abstract

The application discloses an open type sealing ring for pipeline connection, a mounting method and a sealing assembly, and belongs to the technical field of pipeline connection, and comprises a ring body in a ring shape, wherein a stepped opening structure is arranged on the ring body, one end of the opening structure is provided with an inlay part, and the other end of the opening structure is provided with a cladding part; a convex structure is arranged on the inner wall of the cladding part along the axial direction of the ring body, a clamping groove is arranged on the outer wall of the inlay part along the axial direction of the ring body, and the convex structure is connected with the clamping groove in a matched mode after the inlay part is embedded into the cladding part; the cross section of the cladding part along the radial direction of the ring body is arranged in a shape of a Chinese character 'fang', the inlay part extends into the inner side of the cladding part along the ring direction, and the cladding part is cladded on the outer circumferential side of the inlay part along the radial direction; after the inlay part is connected with the cladding part in a matched mode, two abutting surfaces along the ring direction are respectively provided with matched inclined surface structures, and the inclined surface structures are arranged in an inclined mode relative to the radial direction of the ring body. The open type sealing ring is convenient to mount, reduces the operation strength of maintenance, and ensures the sealing effect of the opening.

Description

Technical Field

[0001] This invention belongs to the field of pipe connection technology, specifically relating to an open-type sealing ring for pipe connection, an installation method, and a sealing assembly. Background Technology

[0002] There are two main types of sealing rings used for existing pipe trench connections: One type is a complete ring structure. During installation, the rubber ring needs to be put on from the pipe end and pushed along the pipe to the predetermined position. During this process, there is a large pre-tightening amount between the rubber ring and the outer wall of the pipe. The resistance is large and the operation is laborious when putting it on. The installation difficulty is even more prominent, especially in restricted scenarios such as large-diameter pipes or high-altitude operations.

[0003] Another type is the semi-circular assembled rubber ring. When in use, the two halves of the rubber ring are joined together at the pipe end to form a complete circle. Although this structure avoids the trouble of inserting it from the pipe end, it mainly relies on the locking force of the external clamp to squeeze the two halves together to achieve a seal. At the joint of the two semicircles, due to the lack of effective connection and pre-tightening of the rubber ring itself, the problem of poor sealing often occurs.

[0004] In addition, during routine maintenance of pipeline systems, it is often necessary to remove the old sealing rings and inspect the connection points. Even if the old rings can be broken off directly with tools, the new sealing rings still need to be fitted from the pipe end when installed. This requires the complete disassembly of one side of the pipeline, which seriously affects the efficiency of maintenance work. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an open-type sealing ring for pipe connections, an installation method, and a sealing assembly. By setting an opening in the sealing ring and providing a mutually cooperating sealing connection structure at the end of the opening, installation is facilitated, thereby reducing installation difficulty and maintenance workload, while ensuring a sealing effect at the opening.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides an open-type sealing ring for pipe connection, comprising an annular ring body, wherein the ring body is provided with a stepped opening structure that is inclined through it in the radial direction, one end of the opening structure is provided with an embedded part, and the other end of the opening structure is provided with a covering part. The inner wall of the covering part is provided with a protruding structure along the axial direction of the ring body, and the outer wall of the inlay part is provided with a slot along the axial direction of the ring body. After the inlay part is inserted into the covering part, the protruding structure and the slot are connected in a cooperative manner. The cross-section of the covering part along the radial direction of the ring body is set as a C-shaped structure, the inner part extends into the inner side of the covering part in the circumferential direction, and the covering part covers the outer periphery of the inner part in the radial direction; After the embedded part and the covering part are connected, the two mating surfaces along the circumference are respectively provided with mutually cooperating inclined structures, and the inclined structures are set radially relative to the ring body.

[0007] As a further implementation, the inclined structure includes a first inclined surface disposed on the mating surface of the embedded part and a second inclined surface disposed on the mating surface of the covering part. After the embedded part is inserted into the covering part, the first inclined surface and the second inclined surface are in contact, and the first inclined surface and the second inclined surface have the same inclination angle.

[0008] As a further implementation, the angle between the first inclined plane and the second inclined plane and the radial direction of the ring body ranges from 0° to 60°.

[0009] As a further implementation, the groove wall of the card slot is provided with a guide slope, and the protruding structure is provided with a mating guide surface adapted to the guide slope. The guide slope and the mating guide surface are inclined relative to each other along the radial direction of the ring body and the inclination directions are the same. The guide ramp and the mating guide surface are configured such that when the embedded part and the covering part are separated relative to each other in the circumferential direction, the mating guide surface abuts against the guide ramp, and the protruding structure generates a pressing force pointing towards the bottom of the slot.

[0010] As a further implementation, the angle between the guide slope and the mating guide surface and the radial direction of the ring body is in the range of 5° to 40°.

[0011] As a further implementation, the height of the protrusion structure is less than or equal to half the thickness of the ring body, and the width of the protrusion structure is greater than or equal to 2mm.

[0012] As a further implementation, the protruding structure extends continuously along the axial direction of the ring body on the inner wall of the covering portion.

[0013] As a further implementation, the protruding structure is provided at intervals along the axial direction of the ring body on the inner wall of the covering part.

[0014] Secondly, the present invention also provides a method for installing an open-type sealing ring for pipe connections, comprising: The open-type sealing ring is pried open at the opening structure to separate the embedded part from the covered part; The separated open-type sealing ring is fitted onto the outer peripheral wall of the pipe end from the side of the pipe; The inset portion is embedded into the covering portion, while the protruding structure is snapped into the slot, and the mating slope of the inset portion is made to fit against the mating slope of the covering portion; The outer circumference of the open-type sealing ring is locked to the outer circumference of the pipe using a clamp locking assembly.

[0015] Thirdly, the present invention also provides a sealing assembly for pipe connections, including the aforementioned open-type sealing ring.

[0016] One or more technical solutions of the present invention have the following beneficial effects: The open-type sealing ring provided by this invention has an open structure on the ring body, which allows the inner part and the covering part to be separated. This enables the installation method of directly fitting the ring from the side of the pipe. Construction workers do not need to fit the ring from the pipe end and push it along the pipe over a long distance. The operation is labor-saving and convenient. It significantly reduces the installation difficulty and greatly improves the construction efficiency, especially in large-diameter pipes and high-altitude operation scenarios.

[0017] In routine maintenance of pipeline systems, when it is necessary to replace the old sealing ring, the operator can directly pry open the open-type sealing ring at the opening and remove it, and then put the new open-type sealing ring on the side of the pipeline without disassembling the fixed connection of the pipeline. This greatly reduces maintenance time and effectively avoids the additional labor costs and equipment downtime losses caused by disassembling and reinstalling the pipeline.

[0018] After the inner part is embedded into the covering part, the protruding structure is locked into the slot to form a mechanical lock, so that the two parts remain relatively fixed in the radial direction. At the same time, the covering part of the C-shaped structure wraps around the inner part from the outer periphery, which enhances the connection strength at the opening. It is not easy to misalign or separate when subjected to external clamp pressure and fluid pressure in the pipeline, thus solving the problem of poor interface sealing caused by the lack of self-connection in existing assembled rubber rings.

[0019] The mating surfaces of the embedded part and the covering part are respectively provided with a first inclined surface and a second inclined surface. After installation, the two surfaces fit together. When the clamp locking assembly applies radial pressure, the inclined surface structure converts part of the radial pressure into a circumferential clamping force, causing the two mating surfaces to approach each other circumferentially and eliminate gaps, ensuring the sealing integrity at the opening. At the same time, the guide inclined surface on the groove wall and the mating guide surface on the protruding structure generate a clamping force pointing towards the bottom of the groove when subjected to circumferential separation force, forming a self-locking anti-disengagement structure, further ensuring the structural stability and sealing reliability of the sealing ring under long-term use and pressure fluctuation conditions. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the sealing ring in its combined state as provided in Embodiment 1 of the present invention; Figure 2 This is a partial schematic diagram of the opening structure of the sealing ring provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the embedded part provided in Embodiment 1 of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the embedded part provided in Embodiment 1 of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the covering part provided in Embodiment 1 of the present invention; Figure 6 This is a partial schematic diagram of the sealing ring in the combined state provided in Embodiment 1 of the present invention; Figure 7 This is a cross-sectional view of the sealing ring in its combined state as provided in Embodiment 1 of the present invention.

[0022] In the diagram: 1. Embedded part; 2. Covering part; 3. Slot; 4. Protruding structure; 5. First inclined surface; 6. Second inclined surface; 7. Ring body; 8. Guide inclined surface; 9. Matching guide surface. Detailed Implementation

[0023] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Example 1 like Figures 1 to 7 As shown, this embodiment provides an open-type sealing ring for pipe connection, including an annular ring body 7. The ring body 7 has an overall circular structure and is integrally molded from rubber material, which has good elasticity and sealing performance.

[0026] The ring body 7 has a stepped opening structure that runs radially through it, so that the ring body 7 is no longer a complete closed loop, but has a free opening end that can be opened and closed.

[0027] One end of the open structure is provided with an embedded part 1, and the other end of the open structure is provided with a covering part 2. During installation, the construction personnel can directly pry open the ring body 7 at the opening to separate the embedded part 1 from the covering part 2, and then directly put the ring body 7 onto the outer peripheral wall of the pipe end from the side of the pipe, without having to put it on from the pipe end, making the operation convenient and labor-saving.

[0028] With this open-type structure, the ring 7 can be used in installation scenarios of large-diameter pipelines, and can be easily installed even in confined spaces such as high-altitude operations. In addition, when the sealing ring needs to be replaced during routine maintenance of the pipeline system, the operator can simply pry open the old ring 7 from the opening and remove it, and then slip the new ring 7 onto the side of the pipeline without disassembling the pipeline on one side, which significantly improves the efficiency of maintenance work.

[0029] The cross-section of the covering part 2 along the radial direction of the ring body 7 is set as a chamfered structure. The chamfered structure means that the shape of the covering part 2 in the radial cross-section is similar to a chamfer with the opening facing inward, that is, the covering part 2 has an open inner space.

[0030] The inner part 1 extends into the inner side of the covering part 2 in the circumferential direction, and the covering part 2 covers the outer periphery of the inner part 1 in the radial direction. Due to the U-shaped cross-sectional structure of the covering part 2, when the inner part 1 extends into the interior of the covering part 2, the upper wall of the covering part 2 in the radial direction and the two side walls in the axial direction wrap around the inner part 1 from the outside, so that the inner part 1 is surrounded by the covering part 2 from three directions.

[0031] This U-shaped structure design allows for a large-area contact fit between the inner part 1 and the covering part 2, which not only enhances the connection strength but also improves the sealing performance. When the clamp locking assembly applies radial pressure to the ring body 7 from the outside, the covering part 2 evenly transmits the pressure to the inner part 1, making the contact between the two tighter and the sealing effect more significant.

[0032] The outer wall of the inner part 1 is provided with a groove 3 along the axial direction of the ring body 7, and the inner wall of the covering part 2 is provided with a protruding structure 4 along the axial direction of the ring body 7. The groove 3 is a groove-shaped structure recessed into the outer wall surface of the inner part 1, and the protruding structure 4 is a block-shaped or strip-shaped structure protruding from the inner wall surface of the covering part 2. The protruding structure 4 is positioned corresponding to the groove 3. When the inner part 1 is inserted into the covering part 2, the protruding structure 4 is precisely engaged in the groove 3 and connected with it.

[0033] When the ring body 7 is subjected to radial pressure from the external clamp or pressure from the fluid inside the pipe, the fit between the protruding structure 4 and the groove 3 ensures that the embedded part 1 and the covering part 2 remain relatively fixed in the radial direction, preventing misalignment or separation. When the ring body 7 is subjected to tensile force or vibration in the circumferential direction, the protruding structure 4 is hooked by the groove wall of the groove 3, preventing it from coming loose and effectively avoiding the opening from loosening due to external forces during long-term use, thus ensuring the reliability of the connection.

[0034] After the embedded part 1 and the covering part 2 are connected, the two mating surfaces along the circumference are respectively provided with mutually cooperating inclined surface structures. The mating surface of the embedded part 1 is provided with a first inclined surface 5, and the mating surface of the covering part 2 is provided with a second inclined surface 6. After the embedded part 1 is inserted into the covering part 2, the first inclined surface 5 and the second inclined surface 6 are in contact.

[0035] The inclined structure is set radially relative to the ring body 7. That is, the first inclined surface 5 and the second inclined surface 6 are not planes that extend vertically in the radial direction, but inclined planes that are at a certain angle relative to the radial direction, and the first inclined surface 5 and the second inclined surface 6 have the same inclination angle.

[0036] When the inner part 1 and the covering part 2 are subjected to radial pressure from the external clamp, the first inclined surface 5 and the second inclined surface 6 fit together more tightly, producing a wedging effect. When the ring body 7 is subjected to the pressure of the fluid inside the pipe, the pressure is transmitted circumferentially through the ring body 7 to the two mating surfaces at the opening, causing the first inclined surface 5 and the second inclined surface 6 to squeeze against each other. The greater the pressure, the tighter the fit, and the more significant the sealing effect.

[0037] The angle between the first inclined plane 5 and the second inclined plane 6 and the radial direction of the ring body 7 ranges from 0 degrees to 60 degrees. This angle range is optimized based on the elastic deformation characteristics of the rubber material and the sealing principle. When the inclined plane angle is less than 0 degrees, the inclined plane is not actually inclined and cannot produce a wedging effect; when the inclined plane angle is greater than 60 degrees, the inclined plane is too gentle, and the circumferential component force generated under radial pressure is insufficient, thus weakening the sealing effect.

[0038] In this embodiment, the angle between the first inclined surface 5 and the second inclined surface 6 and the radial direction of the ring body 7 is 30 degrees. After the first inclined surface 5 of the inner part 1 is fitted with the second inclined surface 6 of the covering part 2, the clamp locking assembly applies radial pressure from the outside. This radial pressure is converted into a clamping force in the circumferential direction through the inclined surface structure, causing the two mating surfaces to approach each other in the circumferential direction, thereby eliminating the gap at the opening and achieving a seal. This angle range allows the inclined surface structure to generate sufficient circumferential force when subjected to external pressure, ensuring the sealing effect at the opening.

[0039] The groove 3 has a guide slope 8 on its groove wall, and the protruding structure 4 has a mating guide surface 9 that matches the guide slope 8. The guide slope 8 is located on one of the groove walls of the groove 3, and the mating guide surface 9 is located on the corresponding side of the protruding structure 4. The guide slope 8 and the mating guide surface 9 are inclined relative to each other along the radial direction of the ring body 7, and their inclination directions are the same.

[0040] When the inner part 1 is inserted into the covering part 2, the mating guide surface 9 slides along the guide slope 8, allowing the protruding structure 4 to smoothly slide into the slot 3, thus guiding the installation. Simultaneously, the guide slope 8 and the mating guide surface 9 have the same inclination direction. When the ring body 7 is subjected to a circumferential separation force, the mating guide surface 9 abuts against the guide slope 8, and the interaction force between them causes the protruding structure 4 to generate a pressing force pointing towards the bottom of the slot 3. As the separation force increases, the pressing force towards the bottom of the slot 3 also increases accordingly, creating a self-locking effect and effectively preventing the protruding structure 4 from dislodging from the slot 3.

[0041] During the long-term use of the pipeline system, even when subjected to external loads such as vibration and pressure fluctuations, the mating structure of the guide slope 8 and the mating guide surface 9 can always maintain a stable locking state, ensuring the integrity of the overall structure of the sealing ring and preventing the opening from loosening.

[0042] The angle between the guide ramp 8 and the mating guide surface 9 and the radial direction of the ring body 7 ranges from 5 degrees to 40 degrees. This angle range is optimized based on the anti-loosening self-locking principle and the characteristics of the rubber material. When the angle is less than 5 degrees, the ramp is too steep, and the protruding structure 4 has difficulty sliding smoothly into the slot 3, increasing the installation resistance. When the angle is greater than 40 degrees, the inclination angle of the ramp is too large. Although it is easy to slide in, the clamping force pointing to the bottom of the slot 3 generated when subjected to separation force is insufficient, and the anti-loosening effect is weakened.

[0043] In this embodiment, the angle between the guide ramp 8 and the mating guide surface 9 and the radial direction of the ring body 7 is 25 degrees. The height of the protrusion structure 4 is less than or equal to half the thickness of the ring body 7 to ensure that the protrusion structure 4 has sufficient structural strength, while not being too high and causing installation difficulties or breakage during use. The width of the protrusion structure 4 is greater than or equal to 2 mm to ensure that the contact area between the protrusion structure 4 and the slot 3 is sufficient, and that it will not deform or be damaged due to excessive local stress when subjected to force.

[0044] The raised structure 4 extends continuously along the axial direction of the ring body 7 on the inner wall of the covering part 2, that is, the raised structure 4 is a complete strip-shaped protrusion extending from one end of the inner wall of the covering part 2 to the other end. This continuously extending structure maximizes the mating area between the raised structure 4 and the groove 3, resulting in uniform stress distribution and the ability to withstand larger loads. At the same time, the continuously extending raised structure 4 provides a locking effect across the entire axial width of the ring body 7, making the sealing effect at the opening more reliable.

[0045] In this embodiment, the cross-sectional shape of the protruding structure 4 is rectangular, and the mating guide surface 9 provided on it is located on the side of the protruding structure 4 facing the insertion direction of the inner part 1. When the inner part 1 is inserted into the covering part 2 in the circumferential direction, the mating guide surface 9 contacts the guide slope 8 of the slot 3, and the protruding structure 4 gradually slides into the slot 3 under the action of the guide slope 8, completing the installation and locking.

[0046] Depending on the application scenario and specification requirements, multiple protrusions 4 can be spaced apart on the inner wall of the covering part 2 along the axial direction of the ring body 7. When the axial width of the ring body 7 is large, multiple spaced protrusions 4 can reduce material usage and manufacturing costs while ensuring fit strength.

[0047] Multiple protrusions 4 are evenly distributed axially, and each protrusion 4 engages with a corresponding slot 3 to form a multi-point locking mechanism. When the ring body 7 is subjected to external force, the multiple protrusions 4 share the load. Even if one of the protrusions 4 fails due to accidental damage, the remaining protrusions 4 can still maintain the locked state, improving the reliability and service life of the product.

[0048] In this embodiment, an annular sealing lip can also be provided on the inner wall of the ring body 7, and the annular sealing lip is located at the axial edges of the inner wall of the ring body 7. When the clamp locking assembly presses the ring body 7 against the outer peripheral wall of the pipe, the annular sealing lip undergoes additional deformation, filling the tiny gap between the outer wall of the pipe and the ring body 7, thereby improving the sealing effect.

[0049] The annular sealing lip has a triangular or semi-circular cross-sectional shape, with its tip pointing towards the outer wall of the pipe. Under radial pressure, the tip of the annular sealing lip undergoes significant local deformation, forming a line contact seal, further increasing the sealing specific pressure, and ensuring that high-pressure fluid does not leak between the outer wall of the pipe and the ring body 7.

[0050] Example 2 This embodiment provides an installation method for an open-type sealing ring for pipe connections. This method is designed based on the structural characteristics of the open-type sealing ring, fully leveraging its ease of installation. The method includes the following steps: Pry open the open-type sealing ring at the opening structure to separate the inner part 1 from the covering part 2. Since the ring body 7 is made of rubber material, it has good elasticity. The operator only needs to apply a certain prying force at the opening to open it, and the inner part 1 will come out of the covering part 2. This step is simple to operate and does not require any tools. It can be easily completed even in spaces where it is inconvenient to operate, such as at heights.

[0051] The separated open-type sealing ring is then fitted onto the outer circumferential wall of the pipe end from the side. Since the open-type sealing ring is now in an open state, its inner diameter is no longer a closed ring but has an opening. Therefore, the operator can directly pass the ring 7 around the outer wall of the pipe from the side, fitting it onto the outer circumferential wall of the pipe end. This step eliminates the need to insert it from the pipe end, avoiding the difficulty in pushing it in caused by excessive pre-tightening during the installation of traditional full-ring sealing rings. This convenience is particularly significant in the installation of large-diameter pipes, greatly reducing installation time. For emergency repair scenarios where the pipe is already fixed in place and there is no operating space at either end, the advantage of this step is even more pronounced, allowing the operator to install the new sealing ring without disassembling any pipework.

[0052] The inner part 1 is embedded into the covering part 2, while the protruding structure 4 is engaged in the slot 3, and the first inclined surface 5 of the inner part 1 is aligned with the second inclined surface 6 of the covering part 2. The operator pulls the two ends of the opening of the ring body 7 closer together, aligning the inner part 1 with the C-shaped opening of the covering part 2 in the circumferential direction, and then applies a pushing force to push the inner part 1 into the inner side of the covering part 2. During the pushing process, the mating guide surface 9 on the protruding structure 4 slides along the guide inclined surface 8 of the slot 3, guiding the protruding structure 4 to accurately slide into the slot 3. When the inner part 1 is fully embedded into the covering part 2, the protruding structure 4 is fully engaged in the slot 3, and the two form a locking fit. At the same time, the first inclined surface 5 on the mating surface of the inner part 1 and the second inclined surface 6 on the mating surface of the covering part 2 are in close contact with each other, forming a tight surface contact between the first inclined surface 5 and the second inclined surface 6, achieving a seal at the opening. This step restores the ring body 7 to a complete circular shape, and the inner part 1 and the covering part 2 at the opening are reliably connected through multiple mating structures, ensuring that the sealing ring will not automatically loosen during use.

[0053] A clamp locking assembly is used to lock the outer circumference of the open-type sealing ring to the outer circumference of the pipe. The operator places two clamp half-rings onto the outer circumference of the installed open-type sealing ring and uses a locking device to pull and secure the two clamp half-rings together. As the clamp locking assembly gradually tightens, the inner wall of the clamp half-rings applies radial pressure to the outer circumference of the ring body 7. Under the action of radial pressure, the inner wall of the ring body 7 tightly adheres to the outer circumference of the pipe, achieving a circumferential seal on the outer wall of the pipe. Simultaneously, the radial pressure is transmitted to the first inclined surface 5 and the second inclined surface 6 at the opening, making the fit between the two inclined surfaces even tighter. The inclined surface structure converts part of the radial pressure into a circumferential clamping force, causing the two mating surfaces at the opening to approach each other circumferentially. The sealing performance increases with increasing pressure. The fluid pressure transported inside the pipe is transmitted through the inner wall of the ring body 7 to the inclined surface structure at the opening, further enhancing the tightness of the fit between the first inclined surface 5 and the second inclined surface 6, achieving a self-tightening seal.

[0054] Example 3 This embodiment provides a sealing assembly for pipe connections. The sealing assembly includes the aforementioned open-type sealing ring, which can be used in conjunction with two clamp half-rings and a locking element. Both clamp half-rings are semi-circular arc-shaped structures, and when aligned, they form a complete circular ring. The inner walls of the two clamp half-rings together form a complete annular mounting cavity. The shape and size of this mounting cavity are adapted to the shape of the open-type sealing ring, which is housed within the mounting cavity.

[0055] The two clamp half-rings are tightened together by a locking device, which typically uses a bolt and nut mechanism. By tightening the nut, the two clamp half-rings gradually approach and clamp together. During the tightening process, the size of the mounting cavity gradually decreases, and the cavity wall applies uniform radial pressure to the outer circumference of the open-type sealing ring, pressing the open-type sealing ring tightly against the outer circumference of the pipe.

[0056] The cavity wall of the installation chamber can also be provided with a positioning groove for the pipe end to be embedded. The positioning groove cooperates with the groove pre-rolled on the outer wall of the pipe to accurately position the sealing component in the axial direction of the pipe and prevent the sealing component from moving along the axial direction of the pipe during use.

[0057] In this embodiment, the ring body 7 of the open-type sealing ring is made of EPDM rubber or nitrile rubber, which has good aging resistance and media resistance. A fiber reinforcement layer can also be provided inside the ring body 7 to improve its compressive strength and dimensional stability. This sealing assembly is suitable for the connection and sealing of various pipeline systems, including fire-fighting water supply pipelines, building water supply pipelines, municipal water supply pipelines, and gas pipelines, and is especially suitable for large-diameter pipelines and pipeline connection scenarios requiring rapid installation or frequent maintenance.

[0058] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An open-type sealing ring for pipe connections, characterized in that, It includes a ring-shaped body, on which a stepped opening structure is provided that is inclined through the radial direction. One end of the opening structure is provided with an embedded part, and the other end of the opening structure is provided with a covering part. The inner wall of the covering part is provided with a protruding structure along the axial direction of the ring body, and the outer wall of the inlay part is provided with a slot along the axial direction of the ring body. After the inlay part is inserted into the covering part, the protruding structure and the slot are connected in a cooperative manner. The cross-section of the covering part along the radial direction of the ring body is set as a C-shaped structure, the inner part extends into the inner side of the covering part in the circumferential direction, and the covering part covers the outer periphery of the inner part in the radial direction; After the embedded part and the covering part are connected, the two mating surfaces along the circumference are respectively provided with mutually cooperating inclined structures, and the inclined structures are set radially relative to the ring body.

2. The open-type sealing ring for pipe connection as described in claim 1, characterized in that, The inclined structure includes a first inclined surface disposed on the mating surface of the embedded part and a second inclined surface disposed on the mating surface of the covering part. After the embedded part is inserted into the covering part, the first inclined surface and the second inclined surface fit together, and the first inclined surface and the second inclined surface have the same inclination angle.

3. The open-type sealing ring for pipe connection as described in claim 2, characterized in that, The angle between the first inclined plane and the second inclined plane and the radial direction of the ring body ranges from 0° to 60°.

4. The open-type sealing ring for pipe connection as described in claim 1, characterized in that, The groove wall of the card slot is provided with a guide slope, and the protruding structure is provided with a mating guide surface adapted to the guide slope. The guide slope and the mating guide surface are inclined relative to each other along the radial direction of the ring body and the inclination direction is the same. The guide ramp and the mating guide surface are configured such that when the embedded part and the covering part are separated relative to each other in the circumferential direction, the mating guide surface abuts against the guide ramp, and the protruding structure generates a pressing force pointing towards the bottom of the slot.

5. The open-type sealing ring for pipe connection as described in claim 4, characterized in that, The angle between the guide slope and the mating guide surface and the radial direction of the ring body is in the range of 5° to 40°.

6. The open-type sealing ring for pipe connection as described in claim 1, characterized in that, The height of the protruding structure is less than or equal to half the thickness of the ring body, and the width of the protruding structure is greater than or equal to 2mm.

7. The open-type sealing ring for pipe connection as described in claim 1, characterized in that, The raised structure extends continuously along the axial direction of the ring body on the inner wall of the covering part.

8. The open-type sealing ring for pipe connection as described in claim 1, characterized in that, The protruding structure is provided at intervals along the axial direction of the ring body on the inner wall of the covering part.

9. A method for installing an open-type sealing ring for pipe connections as described in any one of claims 1-8, characterized in that, include: The open-type sealing ring is pried open at the opening structure to separate the embedded part from the covered part; The separated open-type sealing ring is fitted onto the outer peripheral wall of the pipe end from the side of the pipe; The inset portion is embedded into the covering portion, while the protruding structure is snapped into the slot, and the mating slope of the inset portion is made to fit against the mating slope of the covering portion; The outer circumference of the open-type sealing ring is locked to the outer circumference of the pipe using a clamp locking assembly.

10. A sealing assembly for pipe connections, characterized in that, Includes the open-type sealing ring as described in any one of claims 1-8.

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