Split type pipeline leaking stoppage device

Abstract

The invention discloses a split type pipeline leaking stoppage device, and relates to the technical field of mechanical fixtures, the split type pipeline leaking stoppage device comprises two splicing mechanisms which are detachably connected and are provided with splicing surfaces, the two splicing surfaces are folded after being connected with the two splicing mechanisms and are tightly connected to the peripheral side of the leaking position of a pipeline to be subjected to leaking stoppage in a sleeving mode, and the two splicing surfaces are separated after being disassembled with the two splicing mechanisms; the at least two annular sealing mechanisms are distributed on the two sides of the leakage position in the axis direction of the pipeline to be subjected to leaking stoppage, and the pipeline to be subjected to leaking stoppage is sleeved with the annular sealing mechanisms; each annular sealing mechanism comprises two sealing splicing sections, and the two sealing splicing sections are arranged on the splicing faces respectively and are folded and separated along with connection and disassembly of the two splicing mechanisms. The two transverse sealing mechanisms extend in the axis direction of the pipeline to be subjected to leaking stoppage, are sealed at the two splicing positions of the two splicing faces correspondingly and are in close fit with the ends, located on the same side, of the annular sealing mechanisms correspondingly. The design of the whole device avoids the defects of the prior art in the aspects of timeliness and economic benefits.

Description

Technical Field

[0001] This invention relates to the field of mechanical clamping technology, and in particular to a split-type pipe sealing device. Background Technology

[0002] During operation, oil and gas pipelines may experience localized corrosion, deformation, or leaks due to internal or external factors, creating safety hazards. Current technology requires welding pipeline plugs and then using a live-line, pressurized plugging process to repair or replace affected sections. However, this method requires extensive construction equipment, is relatively complex, and takes several days. Summary of the Invention

[0003] The purpose of this invention is to provide a split-type pipe sealing device to solve the problems existing in the prior art and avoid the shortcomings of the prior art in terms of timeliness and economic benefits.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a split-type pipe sealing device, comprising: Two splicing mechanisms are detachably connected and each has a splicing surface. Both splicing surfaces are arc-shaped structures. After the two splicing mechanisms are connected, the two splicing surfaces are closed and match the structure of the pipe to be plugged. They are tightly fitted onto the outer periphery of the leak point of the pipe to be plugged. The two splicing surfaces are separated after the two splicing mechanisms are disassembled. At least two annular sealing mechanisms are distributed on both sides of the leak along the axial direction of the pipe to be sealed, and both are sleeved on the pipe to be sealed; each annular sealing mechanism includes two sealing splicing sections, which are respectively disposed on each splicing surface and close and separate as the two splicing mechanisms are connected and separated. Two transverse sealing mechanisms extend along the axial direction of the pipe to be sealed and seal at the two joints of the two splicing surfaces respectively, and are tightly fitted with the ends of the annular sealing mechanisms located on the same side.

[0005] Optional, also includes: A hinge assembly is disposed on the outer periphery of any splicing point of the two splicing surfaces and connected between the two splicing mechanisms.

[0006] Optionally, the hinge assembly includes: Two end plates are respectively connected to the two splicing mechanisms and extend radially along the splicing surface, and are spaced apart along the opening and closing direction of the two splicing mechanisms; A rotating joint is connected between the two end plates, and the axis of rotation of the rotating joint is parallel to the axis of the splicing surface.

[0007] Optional, also includes: Two positioning blocks are disposed on the rotating joint. The two positioning blocks are distributed on both sides of the rotating joint along the opening and closing direction of the two splicing mechanisms. When the two splicing mechanisms are opened to the maximum angle, the two positioning blocks abut against the corresponding end plates respectively.

[0008] Optional, also includes: A first pre-tightening mechanism is detachably connected between the two end plates, and the first pre-tightening mechanism is located on the side of the rotating joint closer to the splicing mechanism.

[0009] Optional, also includes: The second pre-tightening mechanism is detachably connected between the two splicing mechanisms on the side opposite to the first pre-tightening mechanism.

[0010] Optional, also includes: A drive mechanism is disposed between the two end plates, the drive mechanism yields to the rotary joint, and is used to drive the two end plates and each splicing mechanism to rotate around the rotary joint.

[0011] Optional, also includes: Two fastening mechanisms are distributed at both ends of the splicing mechanism along the axial direction of the splicing surface, and are provided with a connecting part and a fastening part. The connecting part is detachably connected to the splicing mechanism, and the fastening part is connected to the connecting part and located on the inner circumference of the splicing surface. The two fastening parts located at the same end are spliced ​​into a ring structure after the two splicing mechanisms are closed, and abut against the end face of the adjacent ring sealing mechanism.

[0012] Optional, also includes: Two baffles extend along the axial direction of the splicing surface and are respectively disposed at the splicing point of the two splicing mechanisms, and abut against the outer side of the corresponding transverse sealing mechanism along the radial direction of the splicing surface.

[0013] Optional, also includes: The drainage assembly includes a drainage channel and a drainage valve. The drainage channel extends through the splicing mechanism and corresponds to the leak point of the pipe to be plugged. It is located within the space surrounded by each of the annular sealing mechanisms. The drainage valve is located on the outer periphery of the splicing mechanism and is sealed and connected to the outlet of the drainage channel.

[0014] The present invention achieves the following technical effects compared to the prior art: The split-type pipe sealing device disclosed in this invention, when in use, first selects the corresponding specification and model of splicing mechanism according to the specifications of the pipe to be sealed. Then, the two splicing mechanisms are hoisted to the leak point of the pipe to be sealed, and then spliced ​​together to clamp the pipe to be sealed. The two splicing mechanisms are then connected so that the annular sealing mechanism and the transverse sealing mechanism press against the surface of the pipe to be sealed, and surround the outer periphery of the leak point of the pipe to be sealed, completing the sealing work. If the split-type pipe sealing device disclosed in this invention is used for temporary sealing, it can be removed in the above order after sealing. If the split-type pipe sealing device disclosed in this invention is used for long-term sealing, the gap between the two splicing mechanisms needs to be welded, and the gap between the splicing mechanism and the surface of the pipe to be sealed also needs to be welded. The entire device not only has the functions of traditional light and small split-type sealing clamps, but is also suitable for sealing large and heavy pipelines, and the sealing effect is also superior. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the entire split-type pipe sealing device in an example disclosed in this invention; Figure 2 This is a side view of the entire split-type pipe sealing device in an example disclosed in this invention; Figure 3 This is a schematic diagram of the opening of the entire split-type pipe sealing device in an example disclosed in this invention; Figure 4 The images show a front view and a side view of an annular sealing mechanism in an example disclosed in this invention. Figure 5 This is a front view of a transverse sealing mechanism in an example disclosed in this invention; Among them, 1-splitting mechanism, 2-drainage valve, 3-lifting ring, 4-rotating pair, 5-end plate, 6-drive mechanism, 7-positioning block, 8-fastening mechanism, 9-annular sealing mechanism, 10-transverse sealing mechanism, 11-baffle plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The purpose of this invention is to provide a split-type pipe sealing device to solve the problems existing in the prior art and avoid the shortcomings of the prior art in terms of timeliness and economic benefits.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 5 As shown, this invention provides a split-type pipe sealing device, including two splicing mechanisms 1, at least two annular sealing mechanisms 9, and two transverse sealing mechanisms 10. The two splicing mechanisms 1 are detachably connected and each has a splicing surface. Both splicing surfaces are arc-shaped structures. After the two splicing mechanisms 1 are connected, the two splicing surfaces close together and match the structure of the pipe to be sealed, tightly fitting around the outer periphery of the leak point of the pipe. The two splicing surfaces separate after the two splicing mechanisms 1 are disassembled. It can be understood that, generally, the pipe to be sealed is a circular pipe structure, and after the two splicing surfaces are closed, the whole structure is... The annular structure allows it to be coaxially fitted onto the outer periphery of the pipe to be sealed; each annular sealing mechanism 9 is distributed on both sides of the leak along the axial direction of the pipe to be sealed and is fitted onto the pipe; each annular sealing mechanism 9 includes two sealing splicing sections, which are respectively set on each splicing surface and close and separate as the two splicing mechanisms 1 are connected and separated; each transverse sealing mechanism 10 extends along the axial direction of the pipe to be sealed and seals at the two splicing points of the two splicing surfaces, and is tightly fitted with the ends of the annular sealing mechanisms 9 located on the same side.

[0021] It should be noted that the two splicing mechanisms 1 are detachably connected, and the connection method includes but is not limited to bolt connection, snap connection or hinge connection, so that when the two splicing mechanisms 1 are not used to seal the leaking pipe, they are in a split state and the two splicing surfaces are also in a separate state. When the two splicing mechanisms 1 need to be used to seal the leaking pipe, they are connected together. At this time, the two splicing surfaces are closed and tightly fitted to the outer periphery of the leaking part of the pipe to be sealed.

[0022] It is understandable that the splicing mechanism 1 selected is different for pipes of different diameters to be plugged, and the structure of its splicing surface is different, so that it can match the pipe of the corresponding diameter to be plugged, and then can be tightly fitted to the outer periphery of the leak point of the pipe after the two splicing surfaces are closed.

[0023] In some cases, the annular sealing mechanism 9 and the transverse sealing mechanism 10 can be directly installed on the splicing surface and the splicing mechanism 1. For example, one side of the annular sealing mechanism 9 along its thickness direction is bonded to the splicing surface, and the other side is used to abut against the surface of the pipe to be sealed. The transverse sealing mechanism 10 is located at the splicing point of the splicing surface. One side along the circumference of the splicing mechanism 1 is bonded to one splicing mechanism 1, and the other side is used to seal against another splicing mechanism 1. The part of the transverse sealing mechanism 10 near the splicing surface is tightly fitted with the ends of the two annular sealing mechanisms 9 after the two splicing surfaces are closed. In other cases, to facilitate the installation of the annular sealing mechanism 9 and the transverse sealing mechanism 10, an arc-shaped sealing groove with the same curvature is provided on the splicing surface, and the arc-shaped sealing groove penetrates the splicing mechanism 1 circumferentially along the splicing surface. Part of the structure of the sealing splicing section along its thickness direction is tightly embedded in the arc-shaped sealing groove, while the remaining structure protrudes from the surface of the splicing surface. Transverse sealing grooves are provided on both sides of the splicing mechanism 1 along its circumferential direction. The transverse sealing grooves extend along the axial direction of the splicing surface and are connected to both ends of the arc-shaped sealing grooves, and penetrate the splicing surface radially. After the two splicing mechanisms 1 are connected, the two arc-shaped sealing grooves on the same side of the two splicing mechanisms 1 are connected and tightly fitted with the transverse sealing mechanism 10 inside. The structure of the transverse sealing mechanism 10 near the axis of the splicing surface protrudes from the splicing surface, and after the two splicing surfaces are closed, the transverse sealing mechanism 10 is tightly fitted with the ends of the two annular sealing mechanisms 9.

[0024] In both of the above situations, the annular sealing mechanism 9 and the transverse sealing mechanism 10 can respectively adopt a sealing gasket structure or a sealing strip structure. For example, when directly bonded to the splicing mechanism 1, a sealing gasket structure can be used, and when setting the arc-shaped sealing groove and the transverse sealing groove, a sealing strip structure can be used, so that the sealing degree can be guaranteed according to different situations.

[0025] Furthermore, the specifications and dimensions of the matching annular sealing mechanism 9 and transverse sealing mechanism 10 are different for pipes of different diameters to be plugged, so as to ensure the effectiveness of plugging the pipes to be plugged.

[0026] To ensure a tight seal between the annular sealing mechanism 9 and the transverse sealing mechanism 10, a groove structure is provided on the side of the transverse sealing mechanism 10 near the axis of the splicing surface. This allows the ends of both annular sealing mechanisms 9 on both sides to be embedded in this groove structure. After the two splicing mechanisms 1 are joined and tightly fitted onto the pipe to be sealed, the annular sealing mechanism 9 and the transverse sealing mechanism 10 make tight contact through this groove structure, thereby improving the sealing effect at the leak point of the pipe. To further enhance the sealing effect between the annular sealing mechanism 9 and the transverse sealing mechanism 10, the groove structure on the transverse sealing mechanism 10 adopts a 70° V-shaped structure. This ensures that the ends of the annular sealing mechanism match its structure, and after the two splicing mechanisms 1 are joined and tightly fitted onto the pipe to be sealed, the annular sealing mechanism 9 and the transverse sealing mechanism 10 further tighten and press together.

[0027] Furthermore, each of the two splicing mechanisms 1 is provided with a lifting ring 3 on the side away from the splicing surface, so as to facilitate the connection of the lifting ring 3 through the hoisting mechanism, and then the splicing mechanism 1 as a whole can be lifted.

[0028] The split-type pipe sealing device disclosed in this invention, when in use, first selects the corresponding specification and model of splicing mechanism 1 according to the specifications of the pipe to be sealed. Then, the two splicing mechanisms 1 are hoisted to the leak point of the pipe to be sealed, and then spliced ​​together to clamp the pipe to be sealed. The two splicing mechanisms 1 are then connected so that the annular sealing mechanism 9 and the transverse sealing mechanism 10 press against the surface of the pipe to be sealed, and surround the outer periphery of the leak point of the pipe to be sealed, completing the sealing work at the leak point of the pipe to be sealed. If the split-type pipe sealing device disclosed in this invention is used for temporary sealing, it can be removed in the above order after sealing. If the split-type pipe sealing device disclosed in this invention is used for long-term sealing, the gap between the two splicing mechanisms 1 needs to be welded, and the gap between the splicing mechanism 1 and the surface of the pipe to be sealed also needs to be welded. The entire device is relatively lightweight, the construction process is simple, and the leak sealing can be completed in just a few hours. It can provide temporary sealing, buying time for other processes, or it can provide independent long-term sealing. This addresses the shortcomings of existing technologies in terms of timeliness and economic efficiency. Furthermore, the entire device not only possesses the functions of traditional lightweight split-type leak-sealing clamps, but is also suitable for sealing large and heavy pipelines, offering superior sealing performance.

[0029] Based on the above implementation method, the two splicing mechanisms 1 are connected by a hinge. The entire split-type pipe sealing device also includes a hinge assembly, which is set on the outer periphery of any splicing point of the two splicing surfaces and connected between the two splicing mechanisms 1, so that the two splicing mechanisms 1 are hingedly connected through the hinge assembly. After the two splicing mechanisms 1 are moved to the pipe to be sealed, the two splicing mechanisms 1 are opened at a certain angle through the hinge assembly. After the two splicing mechanisms 1 are set on the pipe to be sealed, the two splicing mechanisms 1 are closed, so that the two splicing mechanisms 1 are spliced ​​together, clamping the pipe to be sealed, and the two splicing surfaces are spliced ​​together and tightly fitted onto the pipe to be sealed.

[0030] In order to ensure that the two splicing mechanisms 1 do not interfere with each other during rotation, in some examples, the splicing mechanism 1 adopts an arc-shaped plate structure as a whole, and the two splicing mechanisms 1 are spliced ​​into a circular structure after rotating and docking around the hinge component.

[0031] Based on the above embodiments, the hinge assembly includes a rotating joint 4 and two end plates 5. The end plates 5 are respectively connected to the two splicing mechanisms 1 and extend radially along the splicing surface, and are spaced apart along the opening and closing direction of the two splicing mechanisms 1. The rotating joint 4 is connected between the two end plates 5, and the rotation axis of the rotating joint 4 is parallel to the axis of the splicing surface. By setting the end plates 5, the hinge assembly is set between the two end plates 5, which not only expands the opening of the two splicing mechanisms 1, enabling them to clamp larger diameter pipes to be plugged, but also makes the hinge point of the two splicing mechanisms 1 located on the outside of both, so that the two splicing positions between them can fit more tightly. This avoids the hinge assembly being directly set on the splicing mechanism 1, which can easily cause the splicing gap near the hinge position to be restricted, and prevent the two splicing mechanisms 1 from fully connecting at this point.

[0032] In some cases, the rotating pair 4 includes at least two rotating parts, each connected to one of the end plates 5. These rotating parts are staggered along the axial direction of the splicing surface, and a rotating shaft is rotatably inserted between each rotating part. Preferably, multiple sets of rotating parts are used to ensure the stability of the hinged connection between the two splicing mechanisms 1. In other cases, the rotating pair 4 includes only one rotating shaft. The two end plates 5 are cross-arranged, with a movable gap between their ends. The cross-sections of the end plates 5 are staggered along the axial direction of the splicing surface, and the rotating shaft is rotatably inserted between the cross-sections of the end plates 5, allowing the two splicing mechanisms 1 to complete their overall hinged connection through the hinge of the end plates 5.

[0033] Based on the above implementation method, the entire device also includes two positioning blocks 7, which are disposed on the rotating joint 4. The two positioning blocks 7 are distributed on both sides of the rotating joint 4 along the opening and closing direction of the two splicing mechanisms 1. When the two splicing mechanisms 1 are opened to the maximum angle, the two positioning blocks 7 respectively abut against the corresponding end plates 5 to avoid the two splicing mechanisms 1 from being opened excessively. The positioning blocks 7 can also ensure the structural stability of the two splicing mechanisms 1 after opening through cooperation, thereby stably clamping the pipe to be plugged.

[0034] The positioning block 7 can be a bolt structure, but is not limited to a bolt structure. This bolt structure is threadedly connected to the rotating joint 4, and the rotating joint 4 has a threaded hole that mates with the bolt structure. Furthermore, by adjusting the depth of the bolt structure inserted into the threaded hole, the limit positions of the two splicing mechanisms 1 can be adjusted.

[0035] In this embodiment, the rotating joint 4 includes at least two rotating parts, and the positioning blocks 7 are all installed on the rotating parts. Specifically, one positioning block 7 is installed on the rotating part connected to one end plate 5, and it is used to abut and position the other end plate 5.

[0036] To improve the compaction of the annular sealing mechanism 9 and the transverse sealing mechanism 10, and thus ensure the sealing effect of the pipe to be plugged, based on the above embodiment, the whole device also includes a first pre-tightening mechanism, which is detachably connected between the two end plates 5. The first pre-tightening mechanism is located on the side of the rotating pair 4 near the splicing mechanism 1, so as to pre-tighten the two end plates 5 through the first pre-tightening mechanism, thereby further improving the compactness of the two splicing mechanisms 1 on the pipe to be plugged.

[0037] The first pre-tightening mechanism uses, but is not limited to, double-headed fastening bolts, and fastening bolt holes are provided on the end plate 5. The fastening bolt holes extend along the opening and closing direction of the two splicing mechanisms 1. The double-headed fastening bolts pass through the fastening bolt holes on the two end plates 5 in sequence and are connected by nuts, thereby applying pre-tightening force to the two end plates 5.

[0038] In this embodiment, the two end plates 5 are spaced apart from the splicing mechanism 1, and a rotating joint 4 is connected between these parts. The parts of the two end plates 5 close to the splicing mechanism 1 can fit together after being spliced ​​by the two splicing mechanisms 1, and the fastening bolt holes are opened on the parts of the two end plates 5 close to the splicing mechanism 1.

[0039] Furthermore, the structure of the end plates 5 is not limited. In a specific example, the portions of both end plates 5 near the splicing mechanism 1 are plate-shaped to facilitate the opening of pre-tightening bolt holes and the connection of double-ended fastening bolts. It also facilitates the installation of the rotating joint 4 at the position away from the splicing mechanism 1 in this portion. The portions of both end plates 5 away from the splicing mechanism 1 can adopt a support rod structure to allow space for the rotating joint 4 and facilitate the direct application of force through this portion, or the installation of the drive mechanism 6, etc.

[0040] Based on the above implementation method, the entire device also includes a second pre-tightening mechanism, which is detachably connected between the two splicing mechanisms 1 on the side away from the first pre-tightening mechanism. Through the cooperation of the first pre-tightening mechanism and the second pre-tightening mechanism, the tightness of the two splicing mechanisms 1 on the pipe to be plugged is improved, thereby improving the compaction of the annular sealing mechanism 9 and the transverse sealing mechanism 10, and ensuring the sealing effect of the pipe to be plugged.

[0041] In some cases, the second pre-tightening mechanism is directly connected to the two splicing mechanisms 1; in other cases, each of the two splicing mechanisms 1 has a connecting plate on the side away from the first pre-tightening mechanism. The two connecting plates are attached together after the two splicing mechanisms 1 are spliced ​​together, and then the second pre-tightening mechanism is placed between the two connecting plates. The second pre-tightening mechanism applies a pre-tightening force to the two connecting plates, so as to further increase the clamping force of the second pre-tightening mechanism on the side of the two splicing mechanisms 1 away from the first pre-tightening mechanism.

[0042] The second pre-tightening mechanism uses, but is not limited to, double-headed fastening bolts, and fastening bolt holes are provided on the connecting plate. The fastening bolt holes extend along the opening and closing direction of the two splicing mechanisms 1. The double-headed fastening bolts pass through the fastening bolt holes on the two connecting plates in sequence and are connected by nuts, thereby applying pre-tightening force to the two connecting plates.

[0043] Based on the above implementation method, the entire device also includes a drive mechanism 6, which is disposed between the two end plates 5. The drive mechanism 6 yields to the rotating joint 4 and is used to drive the two end plates 5 to rotate each splicing mechanism 1 around the rotating joint 4, so that the two splicing mechanisms 1 can be opened and closed by the drive mechanism 6, reducing manual operation and making it more suitable for large and heavy pipeline sealing scenarios. The drive mechanism 6 adopts, but is not limited to, a hydraulic cylinder, a motor lead screw slider structure, etc.

[0044] Based on the above implementation method, the entire device also includes two fastening mechanisms 8, which are distributed at both ends of the splicing mechanism 1 along the axial direction of the splicing surface, and are provided with connecting parts and fastening parts. The connecting parts are detachably connected to the splicing mechanism 1, and the fastening parts are connected to the connecting parts and located on the inner circumference of the splicing surface. The two fastening parts located at the same end are spliced ​​into a ring structure after the two splicing mechanisms 1 are closed, and abut against the end face of the adjacent ring sealing mechanism 9. The ring sealing mechanism 9 is adjusted to be in a naturally extended state by the fastening parts, so as to further ensure that the ring sealing mechanism 9 can fit tightly against the wall of the pipe to be plugged.

[0045] To ensure the stability of the connection between the connecting part and the splicing mechanism 1, in this embodiment, the connecting part adopts an arc-shaped flange structure with the same length as the fastening part. The connecting part is connected to the splicing mechanism 1 by a bolt structure. The tightening of the bolt structure causes the fastening part to abut against the end face of the adjacent annular sealing mechanism 9. The end face of the splicing mechanism 1 is provided with circumferentially arranged screw holes to accommodate the connection of each connecting part.

[0046] Based on the above embodiments, the entire device also includes two baffles 11, both extending along the axial direction of the splicing surface and respectively disposed at the splicing points of the two splicing mechanisms 1, and abutting against the outer side of the corresponding transverse sealing mechanism 10 radially along the splicing surface to prevent the transverse sealing mechanism 10 from falling off. The baffles 11 can be connected by spot welding, but is not limited to spot welding, to connect them to the corresponding splicing mechanism 1.

[0047] Based on the above embodiments, the entire device also includes a drainage component, which is provided with a drainage channel and a drainage valve 2. The drainage channel is opened through the splicing mechanism 1 and corresponds to the leakage point of the pipe to be plugged. It is located in the space surrounded by each annular sealing mechanism 9. The drainage valve 2 is located on the outer periphery of the splicing mechanism 1 and is sealed and connected to the outlet of the drainage channel.

[0048] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0049] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A split-type pipe sealing device, characterized in that, include: Two splicing mechanisms are detachably connected and each has a splicing surface. Both splicing surfaces are arc-shaped structures. After the two splicing mechanisms are connected, the two splicing surfaces are closed and match the structure of the pipe to be plugged. They are tightly fitted onto the outer periphery of the leak point of the pipe to be plugged. The two splicing surfaces are separated after the two splicing mechanisms are disassembled. At least two annular sealing mechanisms are distributed on both sides of the leak along the axial direction of the pipe to be sealed, and both are sleeved on the pipe to be sealed; each annular sealing mechanism includes two sealing splicing sections, which are respectively disposed on each splicing surface and close and separate as the two splicing mechanisms are connected and separated. Two transverse sealing mechanisms extend along the axial direction of the pipe to be sealed and seal at the two joints of the two splicing surfaces respectively, and are tightly fitted with the ends of the annular sealing mechanisms located on the same side.

2. The split-type pipe sealing device according to claim 1, characterized in that, Also includes: A hinge assembly is disposed on the outer periphery of any splicing point of the two splicing surfaces and connected between the two splicing mechanisms.

3. The split-type pipe sealing device according to claim 2, characterized in that, The hinge assembly includes: Two end plates are respectively connected to the two splicing mechanisms and extend radially along the splicing surface, and are spaced apart along the opening and closing direction of the two splicing mechanisms; A rotating joint is connected between the two end plates, and the axis of rotation of the rotating joint is parallel to the axis of the splicing surface.

4. The split-type pipe sealing device according to claim 3, characterized in that, Also includes: Two positioning blocks are disposed on the rotating joint. The two positioning blocks are distributed on both sides of the rotating joint along the opening and closing direction of the two splicing mechanisms. When the two splicing mechanisms are opened to the maximum angle, the two positioning blocks abut against the corresponding end plates respectively.

5. The split-type pipe sealing device according to claim 3, characterized in that, Also includes: A first pre-tightening mechanism is detachably connected between the two end plates, and the first pre-tightening mechanism is located on the side of the rotating joint closer to the splicing mechanism.

6. The split-type pipe sealing device according to claim 5, characterized in that, Also includes: The second pre-tightening mechanism is detachably connected between the two splicing mechanisms on the side opposite to the first pre-tightening mechanism.

7. The split-type pipe sealing device according to claim 3, characterized in that, Also includes: A drive mechanism is disposed between the two end plates, the drive mechanism yields to the rotary joint, and is used to drive the two end plates and each splicing mechanism to rotate around the rotary joint.

8. The split-type pipe sealing device according to claim 1, characterized in that, Also includes: Two fastening mechanisms are distributed at both ends of the splicing mechanism along the axial direction of the splicing surface, and are provided with a connecting part and a fastening part. The connecting part is detachably connected to the splicing mechanism, and the fastening part is connected to the connecting part and located on the inner circumference of the splicing surface. The two fastening parts located at the same end are spliced ​​into a ring structure after the two splicing mechanisms are closed, and abut against the end face of the adjacent ring sealing mechanism.

9. The split-type pipe sealing device according to claim 1, characterized in that, Also includes: Two baffles extend along the axial direction of the splicing surface and are respectively disposed at the splicing point of the two splicing mechanisms, and abut against the outer side of the corresponding transverse sealing mechanism along the radial direction of the splicing surface.

10. The split-type pipe sealing device according to claim 1, characterized in that, Also includes: The drainage assembly includes a drainage channel and a drainage valve. The drainage channel extends through the splicing mechanism and corresponds to the leak point of the pipe to be plugged. It is located within the space surrounded by each of the annular sealing mechanisms. The drainage valve is located on the outer periphery of the splicing mechanism and is sealed and connected to the outlet of the drainage channel.

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