Pipeline connecting structure and connecting method

Abstract

The invention provides a pipeline connecting structure and a connecting method. The pipeline connecting structure comprises a to-be-connected pipeline, a sealing ring and a tightening assembly. Inner pipelines are arranged at the ends of the to-be-connected pipelines, the sealing rings are arranged outside the inner pipelines of the adjacent to-be-connected pipelines in a sleeving mode and connected with the two adjacent inner pipelines respectively, and anti-skid lines are arranged on the inner walls of the sealing rings. The tightening assembly is arranged outside the sealing ring in a sleeving mode and used for pressing the sealing ring on the inner pipeline. The tightening assembly comprises a first tightening semi-ring and a second tightening semi-ring, and a connecting assembly used for connecting the first tightening semi-ring and the second tightening semi-ring is arranged between the first tightening semi-ring and the second tightening semi-ring. The sealing performance and the stability of the connecting position between the to-be-connected pipelines can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, and in particular to a connection method of a pipeline connection structure. Background Art

[0002] As a new type of water pipe, PCCP has the advantages of wide application range, economy, long life, good seismic performance, easy installation, low operating cost, and basically no water leakage. It can be widely used in long-distance water transmission, power plant return water, urban water supply, etc. The existing PCCP prestressed pipe uses a socket to connect the two pipe sections. First of all, before connecting, it is necessary to ensure that the front and back order of the two pipes is correct, that is, the socket is to the spigot. Secondly, during the connection, the spigot needs to be inserted into the socket. In this process, a large mechanical crane is often required for the socket. During the socket process, it is easy to cause damage to the edge of the pipe due to misalignment of the angle. Finally, the sealing between the two is only based on the sealing ring and its own friction. The strength of the combination is not enough. Once the two are loose, the sealing cannot be guaranteed.

[0003] The utility model with the publication number CN213839919U discloses a connection structure of a PCCP pipe. The present application relates to a connection structure of a PCCP pipe, which belongs to the technical field of pipeline installation technology, and includes a first pipe fitting and a second pipe fitting, wherein the first pipe fitting is provided with a socket, and the second pipe fitting is provided with a socket, wherein the socket is inserted into the socket, and the socket and the socket are provided with a sealing structure, wherein the sealing structure includes a positioning ring and a sealing ring, wherein there are at least two positioning rings, and a plurality of the positioning rings are all sleeved on the socket, and a plurality of the positioning rings are arranged at intervals, and there is at least one sealing ring and all of them are sleeved on the socket, and the sealing ring is located between two adjacent positioning rings. However, in order to improve the sealing performance of the above-mentioned connection structure of a PCCP pipe, it is necessary to set sealing structures in multiple places, such as sealing rings and sealing rings, and the installation is complicated. Summary of the invention

[0004] The purpose of the present invention is to provide a pipeline connection structure and a connection method to solve the defects in the prior art, so as to improve the sealing and stability of the connection between the pipelines to be connected.

[0005] To achieve the above object, the present invention provides a pipeline connection structure, including a pipeline to be connected, a sealing ring and a clamp assembly;

[0006] The ends of the pipes to be connected are provided with inner pipes, the sealing ring is sleeved outside the inner pipes of the adjacent pipes to be connected and is respectively connected to the two adjacent inner pipes, and the inner wall of the sealing ring is provided with anti-slip grooves;

[0007] The tightening assembly is sleeved outside the sealing ring to press the sealing ring against the inner pipe; the tightening assembly includes a first tightening half ring and a second tightening half ring, and a connecting assembly for connecting the first tightening half ring and the second tightening half ring is provided between the two.

[0008] First, align the inner pipes of the two pipes to be connected, and set a sealing ring on the outside of the two inner pipes, so that the sealing ring is set between the two pipes to be connected to ensure that the connection of the pipes to be connected is sealed, and the materials transported in the pipes to be connected will not leak through the connection. After the two inner pipes are connected by the sealing ring, the first tightening half ring and the second tightening half ring are connected through the connecting assembly, and the tightening assembly is tightened on the outside of the sealing ring so that the sealing ring and the inner pipe fit tightly. The inner wall of the sealing ring is provided with anti-slip grooves to increase the friction between the sealing ring and the inner pipe after the combination, thereby enhancing the firmness.

[0009] The present invention provides an inner pipe at the end of the pipe to be connected, and provides a sealing ring outside the inner pipe, and provides a tightening hoop assembly outside the sealing ring, so as to solve the problem of insufficient sealing after the two pipe sections of the pipe to be connected are combined, and the inner wall of the sealing ring is provided with anti-slip grooves for increasing the friction between the sealing ring and the inner pipe after the combination, so that the waterproofness and stability are improved.

[0010] Optionally, the tightening hoop assembly comprises a first tightening hoop half ring and a second tightening hoop half ring, and a connecting assembly for connecting the first tightening hoop half ring and the second tightening hoop half ring is provided between the first tightening hoop half ring and the second tightening hoop half ring.

[0011] Optionally, the connection assembly includes a first connection piece arranged at an end of a first tightening half ring, and a second connection piece arranged at an end of a second tightening half ring, wherein the first connection piece is connected to an adjacent second connection piece.

[0012] The ends of the first tightening half ring and the second tightening half ring are respectively provided with a first connecting piece and a second connecting piece. The first tightening half ring and the second tightening half ring are connected by the connection of the first connecting piece and the second connecting piece to realize the connection. The first tightening half ring and the second tightening half ring form a circular tightening assembly and are tightened on the outside of the sealing ring.

[0013] Optionally, the first connecting member is connected to the adjacent second connecting member via a bolt assembly.

[0014] The bolt assembly includes a second bolt, a nut, and bolt holes respectively arranged on the first connecting member and the second connecting member. The second bolt passes through the first connecting member, the second connecting member and is connected to the nut, thereby realizing the connection between the first tightening half ring and the second tightening half ring. Two bolt holes are respectively arranged on each first connecting member or the second connecting member, and the aperture of the bolt hole is the same as the aperture of the bolt rod of the second bolt. The combination of the second bolt and the nut fixes the tightening assembly on the sealing ring, and an aluminum gasket can be arranged between the second bolt and the nut when fixing.

[0015] Optionally, the sealing ring is connected to the inner pipe through a first bolt.

[0016] Optionally, a threaded hole is provided on the inner pipe, and the first bolt passes through the sealing ring and is connected to the threaded hole.

[0017] The threaded hole is used to match with the first bolt to fix the sealing ring. The sealing ring is penetrated by a positioning hole. The positioning hole can be matched with the threaded hole and the first bolt to connect with the pipe to be connected.

[0018] Optionally, the sealing ring is made of silicone rubber.

[0019] Optionally, the inner wall of the sealing ring is provided with anti-slip grooves to increase the friction between the sealing ring and the inner pipe after combination, thereby enhancing the firmness.

[0020] Optionally, the tightening hoop components are all made of stainless steel.

[0021] The present invention also provides a connection method based on the above pipeline connection structure, comprising the following steps:

[0022] S1. Place a pipe to be connected, put the sealing ring on the inner pipe, and connect the sealing ring to the pipe 1 to be connected;

[0023] S2, insert the inner pipe of another pipe to be connected into the sealing ring and connect it to the sealing ring;

[0024] S3. A tightening hoop assembly is sleeved on the outside of the sealing ring, and the tightening hoop assembly is fastened to the sealing ring.

[0025] Beneficial effects:

[0026] In the present invention, by setting the pipes to be connected, the sealing ring and the clamp assembly; first, align the inner pipes of the two pipes to be connected, and set the sealing ring on the outside of the two inner pipes, so that the sealing ring is set between the two pipes to be connected, so as to ensure that the connection of the pipes to be connected is sealed, and the materials transported in the pipes to be connected will not leak through the connection. After the two inner pipes are connected by the sealing ring, the first clamp half ring and the second clamp half ring are connected by the connecting assembly, and the clamp assembly is clamped on the outside of the sealing ring, so that the sealing ring and the inner pipe fit tightly. The inner wall of the sealing ring is provided with anti-slip grooves, which are used to increase the friction between the sealing ring and the inner pipe after the combination, thereby enhancing the firmness.

[0027] The present invention provides an inner pipe at the end of the pipe to be connected, and provides a sealing ring outside the inner pipe, and provides a tightening hoop assembly outside the sealing ring, so as to solve the problem of insufficient sealing after the two pipe sections of the pipe to be connected are combined, and the inner wall of the sealing ring is provided with anti-slip grooves for increasing the friction between the sealing ring and the inner pipe after the combination, so that the waterproofness and stability are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 A structural diagram of a pipeline connection structure disclosed in the present invention;

[0030] Figure 2 It is a structural diagram of an inner pipe in a pipe connection structure disclosed in the present invention;

[0031] Figure 3 The present invention discloses a structural diagram of a sealing ring and a clamp assembly in a pipeline connection structure.

[0032] Reference numerals:

[0033] Label name Label name 1 Pipes to be connected 31 First half ring 11 Internal pipe 32 First connecting piece 12 Threaded Hole 33 Second half ring 13 First Bolt 34 Second connecting piece 2 Sealing ring 35 Second bolt 21 Positioning hole 36 Nut 3 Tightening assembly

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0037] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] Embodiment 1:

[0039] See also Figure 1-3 , a pipe connection structure according to a first embodiment of the present invention comprises a pipe to be connected 1, a sealing ring 2 and a clamp assembly 3;

[0040] The end of the pipe 1 to be connected is provided with an inner pipe 11, the sealing ring 2 is sleeved outside the inner pipe 11 of the adjacent pipe 1 to be connected, and connects the adjacent inner pipes 11, and the inner wall of the sealing ring 2 is provided with anti-slip grooves;

[0041] The tightening assembly is sleeved on the outside of the sealing ring 2 to press the sealing ring 2 onto the inner pipe 11. The tightening assembly includes a first tightening half ring 31 and a second tightening half ring 33. A connecting assembly is provided between the first tightening half ring 31 and the second tightening half ring 33 to connect the two.

[0042] Specifically, first align the inner pipes 11 of the two pipes 1 to be connected, and set the sealing ring 2 on the outside of the two inner pipes 11, so that the sealing ring 2 is set between the two pipes 1 to be connected, so as to ensure that the connection of the pipes 1 to be connected is sealed, and the materials transported in the pipes 1 to be connected will not leak through the connection. After the two inner pipes 11 are connected through the sealing ring 2, the first tightening half ring 31 and the second tightening half ring 33 are connected through the connecting assembly, and the tightening assembly 3 is tightened on the outside of the sealing ring 2, so that the sealing ring 2 and the inner pipe 11 are tightly fitted. The inner wall of the sealing ring 2 is provided with anti-slip grooves, which are used to increase the friction between the sealing ring 2 and the inner pipe after the combination, thereby enhancing the firmness.

[0043] The present invention provides an inner pipe 11 at the end of the pipe 1 to be connected, and provides a sealing ring 2 outside the inner pipe 11, and provides a clamp assembly 3 outside the sealing ring 2, so as to solve the problem of insufficient sealing after the two pipe sections of the pipe 1 to be connected are combined. The inner wall of the sealing ring 2 is provided with anti-slip grooves for increasing the friction between the sealing ring 2 and the inner pipe after the combination, so that the waterproofness and stability are improved.

[0044] The pipeline 1 to be connected is a PCCP prestressed concrete cylinder pipe, and the pipeline 1 to be connected and the inner pipeline 11 are cast in one piece.

[0045] See also Figure 3 In some embodiments of the present invention, the connection assembly includes a first connection member 32 arranged at the end of the first tightening half ring 31, and a second connection member 34 arranged at the end of the second tightening half ring 33, and the first connection member 32 is connected to the adjacent second connection member 34.

[0046] In this embodiment, the ends of the first tightening half ring 31 and the second tightening half ring 33 are respectively provided with a first connecting member 32 and a second connecting member 34. The first tightening half ring 31 and the second tightening half ring 33 are connected by the connection of the first connecting member 32 and the second connecting member 34. The first tightening half ring 31 and the second tightening half ring 33 form a circular tightening assembly 3 and are tightened on the outside of the sealing ring 2.

[0047] See also Figure 3 In some embodiments of the present invention, the first connecting member 32 is connected to the adjacent second connecting member 34 via a bolt assembly.

[0048] In this embodiment, the bolt assembly includes a second bolt 35, a nut 36, and bolt holes respectively arranged on the first connecting member 32 and the second connecting member 34. The second bolt 35 passes through the first connecting member 32 and the second connecting member 34 and is connected to the nut 36, thereby realizing the connection between the first tightening half ring 31 and the second tightening half ring 33. Two bolt holes are respectively arranged on each first connecting member 32 or the second connecting member 34, and the aperture of the bolt hole is the same as the aperture of the bolt rod of the second bolt 35. The combination of the second bolt 35 and the nut 36 fixes the tightening assembly 3 on the sealing ring 2, and an aluminum gasket can be arranged between the second bolt 35 and the first connecting member 32 during fixing.

[0049] See also Figure 1 and 2 In some embodiments of the present invention, the sealing ring 2 is connected to the inner pipe 11 through a first bolt 13.

[0050] See also Figure 2 and 3 In some embodiments of the present invention, a threaded hole 12 is provided on the inner pipe 11 , and the first bolt 13 passes through the sealing ring 2 and is connected to the threaded hole 12 .

[0051] In this embodiment, in the same pipe 1 to be connected, there are two groups of threaded holes 12, which are respectively arranged on the inner pipes 11 at both ends. The inner pipe 11 is provided with 8 threaded holes 12, and the 8 threaded holes 12 are arranged in pairs. Each pair of threaded holes 12 is evenly distributed on the inner pipe 11. The 8 threaded holes 12 are on the same circular plane, and the circular plane should be at the center of the inner pipe 11.

[0052] The threaded hole 12 is used to fix the sealing ring 2 in combination with the first bolt 13. The sealing ring 2 is penetrated with a positioning hole 21. The positioning hole 21 can be combined with the threaded hole 12 and the first bolt 13 to combine with the pipe 1 to be connected. When fixing, an aluminum gasket can be added between the threaded hole 12 and the sealing ring 2. Since there are threaded holes 12 on the pipe 1 to be connected and positioning holes 21 on the sealing ring 2, the two pipe sections can be installed visually, which is convenient for installation.

[0053] The aperture of the positioning hole 21 is the same as the aperture of the screw of the first bolt 13, and the depth of the positioning hole 21 is the same as the thickness of the rubber ring. Two rows of positioning holes 21 are arranged on the sealing ring 2 along its circumferential direction. The two rows of positioning holes 21 correspond to the two inner pipes 11 respectively. The number of positioning holes 21 in each row is consistent with the number of threaded holes 12 arranged on one inner pipe 11, and the distribution of the positioning holes 21 in each row on the sealing ring 2 corresponds to the distribution of the threaded holes 12 on the inner pipe 11, and the distance between the positioning holes 21 in one row and the edge of the sealing ring 2 is equal to the distance between the threaded holes 12 and the edge of the inner pipe 11.

[0054] See also Figure 3In some embodiments of the present invention, the sealing ring 2 is made of silicone rubber.

[0055] The sealing ring 2 is made of silicone rubber, and its thickness should be one-fourth of the difference between the outer diameter and the inner diameter of the pipe 1 to be connected, and its width is twice that of the inner pipe 11. Guide lines can be added to the inner pipe 11 and the sealing ring 2 to facilitate installation.

[0056] See also Figure 3 In some embodiments of the present invention, the tightening hoop components 3 are all made of stainless steel.

[0057] The material of the clamp assembly 3 is stainless steel. The thickness of the clamp assembly 3 is one-fourth of the difference between the outer diameter and the inner diameter of the PCCP pipeline. The width is the same as the width of the sealing ring 2. The inner diameter of the clamp assembly 3 should be the same as the outer diameter of the inner pipe of the PCCP pipeline.

[0058] Embodiment 2:

[0059] See also Figure 1-3 According to a second embodiment of the present invention, a connection method based on the above pipeline connection structure comprises the following steps:

[0060] S1, place a pipe 1 to be connected, put the sealing ring 2 on the inner pipe 11, and connect the sealing ring 2 to the pipe 1 to be connected;

[0061] S2, insert the inner pipe 11 of another pipe 1 to be connected into the sealing ring 2 and connect it to the sealing ring 2;

[0062] S3, sleeve the tight hoop assembly 3 on the outside of the sealing ring 2, and fasten the tight hoop assembly 3 to the sealing ring 2.

[0063] In practical applications, a pipe 1 to be connected is first placed, and the sealing ring 2 is then put on the pipe according to the position of the positioning hole 21 on the sealing ring 2 and the position of the threaded hole 12 on the inner pipe 11. Then, the first bolt 13 is screwed into the threaded hole 12 to fix the sealing ring 2 on the inner pipe 11 of one of the pipes 1 to be connected. In the same way, the inner pipe 11 of the other pipe 1 to be connected is combined with the sealing ring 2 and fixed with the first bolt 13.

[0064] The outer diameter of the inner pipe 11 is smaller than the outer diameter of the pipe 1 to be connected, and the outer diameter of the sealing ring 2 is also smaller than the outer diameter of the pipe 1 to be connected. At this time, there is enough space for the clamp assembly 3 to be clamped on the sealing ring 2.

[0065] In practical applications, the lower half of the clamping assembly 3 should be placed under the two inner pipes 11 first. After the two inner pipes 11 are combined with the sealing ring 2, the upper half of the clamping assembly 3 should be placed on the sealing ring 2. The sealing ring is clamped on the two inner pipes 11 by the second bolt 35 and the nut 36 to further enhance the integrity of the two pipe sections and the sealing ring 2.

[0066] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pipeline connection structure, characterized in that: It includes pipes to be connected, sealing rings and clamping assemblies; The ends of the pipes to be connected are provided with inner pipes, the sealing ring is sleeved outside the inner pipes of the adjacent pipes to be connected and is respectively connected to the two adjacent inner pipes, and the inner wall of the sealing ring is provided with anti-slip grooves; The tightening assembly is sleeved outside the sealing ring to press the sealing ring against the inner pipe; the tightening assembly includes a first tightening half ring and a second tightening half ring, and a connecting assembly for connecting the first tightening half ring and the second tightening half ring is provided between the two.

2. The pipeline connection structure according to claim 1, characterized in that: The connection assembly comprises a first connection piece arranged at the end of a first tightening half ring, and a second connection piece arranged at the end of a second tightening half ring, wherein the first connection piece is connected to an adjacent second connection piece.

3. The pipeline connection structure according to claim 2, characterized in that: The first connecting member is connected to the adjacent second connecting member via a bolt assembly.

4. The pipeline connection structure according to claim 3, characterized in that: The bolt assembly includes a second bolt, a nut, and bolt holes respectively arranged on the first connecting member and the second connecting member, and the second bolt passes through the first connecting member and the second connecting member and is connected with the nut.

5. The pipeline connection structure according to any one of claims 1 to 4, characterized in that: The sealing ring is connected to the inner pipe through a first bolt.

6. The pipeline connection structure according to claim 5, characterized in that: A gasket is arranged between the sealing ring and the first bolt.

7. The pipeline connection structure according to claim 6, characterized in that: The inner pipe is provided with a threaded hole, and the first bolt passes through the sealing ring and is connected to the threaded hole.

8. The pipeline connection structure according to any one of claims 1 to 4, characterized in that: The sealing ring is made of silicone rubber.

9. The pipeline connection structure according to any one of claims 1 to 4, characterized in that: The tightening hoop components are all made of stainless steel.

10. A connection method based on the pipeline connection structure according to any one of claims 1 to 9, characterized in that: The steps include: S1. Place a pipe to be connected, put the sealing ring on the inner pipe, and connect the sealing ring to the pipe to be connected; S2, insert the inner pipe of another pipe to be connected into the sealing ring and connect it to the sealing ring; S3, sleeve a tight hoop assembly on the outside of the sealing ring, and tightly connect the tight hoop assembly to the sealing ring.

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