Prefabricated directly-buried thermal insulation pipe connecting structure
By designing lined pipes, sealing rings, connectors and stabilizers at the prefabricated direct buried insulation pipe interfaces, combined with the use of tie rods and positioning bolts, the problem of insufficient connection strength and sealing of the existing interface is solved, and higher sealing and connection strength are achieved, and the service life of the pipe network is extended.
Patent Information
- Application Number
- CN202421300553.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The existing prefabricated direct buried insulation pipe interface is connected through welding, which makes the construction site inconvenient operation, and the connection strength and sealing at the interface are insufficient, which affects the service life of the pipeline network.
A prefabricated direct buried insulation pipe connection structure is designed, which uses inner lined pipe and sealing ring to improve sealing, improve connection strength through connectors and stabilizers, and provides axial tension with pull rods and positioning bolts to ensure a stable connection of the pipe.
It improves the sealing and connection strength at the interface, ensures a stable connection of the pipeline, avoids separation along the axial direction, and extends the service life of the pipeline network.
Smart Images
Figure CN222634037U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipelines, in particular to a prefabricated direct-buried thermal insulation pipe connection structure. Background Art
[0002] Insulated pipes are used for the transportation of liquids, gases and other media, and are widely used in thermal insulation projects for pipelines in the petroleum, chemical, central heating, central air conditioning, municipal and other fields. Most of the current prefabricated direct-buried insulated pipes have the same structure. They are generally prefabricated in factories according to their lengths, and multiple sections are connected together to form a transportation pipeline. The two ends of the insulated pipes are welded together at the connection point of the two insulated pipes. Usually, the corrosion resistance and thermal insulation performance of the main body prefabricated in the factory can be guaranteed, but the installation of the interface of the prefabricated direct-buried insulated pipe needs to be completed on site. The insulated pipe interface is a vital part of the prefabricated direct-buried insulated pipe system. Its structural form and construction method are very critical. Due to the harsh working environment on site, the installation welding of the interface and the quality of the anti-corrosion spraying construction are difficult to guarantee, resulting in insufficient sealing and corrosion resistance of the insulation pipe interface, which in turn has a greater impact on the service life of the entire pipeline network. Utility Model Content
[0003] The utility model aims to provide a prefabricated direct-buried insulated pipe connection structure to solve the problems that the existing prefabricated direct-buried insulated pipe interfaces are generally connected by welding, which is inconvenient to operate at the construction site and has insufficient connection strength and sealing at the interfaces.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] The utility model discloses a prefabricated direct-buried thermal insulation pipe connection structure, comprising a first pipe and a second pipe, a connecting piece is arranged at the connection between the first pipe and the second pipe, a stabilizing piece is arranged on the outer side of the first pipe and the second pipe, one side of the stabilizing piece is connected to the connecting piece through a pull rod, a mounting plate is arranged on the other side of the stabilizing piece, a positioning bolt is arranged on the mounting plate, a positioning ring is arranged on the outer wall of the first pipe and the second pipe, and the positioning bolt is connected to the positioning ring.
[0006] Furthermore, an inner liner pipe is provided on the inner side of the connecting piece, and the inner liner pipe is sleeved on the outer side of the connection between the first pipe and the second pipe.
[0007] Furthermore, sealing rings are provided on the outer sides of the first pipe and the second pipe, and the sealing rings are in contact with the inner wall of the liner pipe.
[0008] Furthermore, the connecting member includes two connecting half rings, one end of the two connecting half rings is hinged, and the other ends of the two connecting half rings are connected by a connecting structure. A connecting block is provided on the outer wall of the connecting half ring, and a first mounting hole matching the pull rod is opened on the connecting block.
[0009] Furthermore, the connecting structure includes two connecting components, and the two connecting components are arranged on the two connecting semi-rings. The connecting component includes a fixed seat, and the fixed seat is arranged on the connecting semi-ring. A connecting shaft is arranged on the fixed seat, and a locking buckle is arranged on the connecting shaft. A limiting spring piece is arranged below the locking buckle, and one end of the limiting spring piece is fixed on the fixing seat, and the movable end of the limiting spring piece contacts the top surface of the locking buckle after passing through the locking buckle.
[0010] Furthermore, the stabilizing member includes two stabilizing half rings, which are detachably connected together by bolts, and a second mounting hole matching the pull rod is opened on the side wall of the stabilizing half ring.
[0011] Compared with the prior art, the beneficial technical effects of the utility model are:
[0012] The utility model provides an inner lining pipe at the interface between the first pipe and the second pipe, and a sealing ring is also installed inside the inner lining pipe to improve the sealing of the interface, a connecting piece is installed on the outer side of the inner lining pipe to improve the connection strength, and a stabilizing piece is also installed on the outer side of the first pipe and the second pipe, and the stabilizing piece and the connecting piece are connected by a pull rod to provide axial tension, so that the first pipe and the second pipe fit more closely and prevent the first pipe and the second pipe from separating in the axial direction, and a positioning ring is fixedly connected to the outer wall of the first pipe and the second pipe, and the stabilizing piece and the positioning ring are connected by a positioning bolt to provide stability to the stabilizing piece and further improve the connection strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model will be further described below in conjunction with the accompanying drawings.
[0014] Figure 1 This is a front view of the prefabricated direct buried thermal insulation pipe connection structure of the utility model;
[0015] Figure 2 It is a top view of the connector, the first pipeline and the second pipeline of the utility model;
[0016] Figure 3 for Figure 2 Sectional view in the AA direction;
[0017] Figure 4 It is a three-dimensional structural schematic diagram of the connecting piece of the utility model;
[0018] Figure 5It is a side view of the connector of the utility model;
[0019] Figure 6 It is a top view of the connector of the utility model;
[0020] Figure 7 for Figure 5 Cross-sectional view in the BB direction;
[0021] Figure 8 It is a side view of the stabilizing member of the utility model.
[0022] Explanation of the accompanying drawings: 1. First pipeline; 2. Second pipeline; 3. Connecting piece; 3-1. Connecting half ring; 3-2. Connecting block; 3-2-1. First mounting hole; 3-3. Connecting assembly; 3-3-1. Fixing seat; 3-3-2. Connecting shaft; 3-3-3. Locking buckle; 3-3-4. Limiting spring piece; 4. Stabilizing piece; 4-1. Stabilizing half ring; 4-1-1. Second mounting hole; 4-2. Mounting plate; 4-3. Positioning bolt; 5. Positioning ring; 6. Pull rod; 7. Lining pipe; 8. Sealing ring. DETAILED DESCRIPTION
[0023] like Figure 1-8 As shown, a prefabricated direct-buried insulated pipe connection structure includes a first pipe 1 and a second pipe 2, characterized in that: a connecting piece 3 is installed at the connection between the first pipe 1 and the second pipe 2, a stabilizing piece 4 is sleeved on the outer side of the first pipe 1 and the second pipe 2, one side of the stabilizing piece 4 is connected to the connecting piece 3 through a pull rod 6, and the other side of the stabilizing piece 4 is connected to a mounting plate 4-2, a positioning bolt 4-3 is threadedly connected to the mounting plate 4-2, a positioning ring 5 is fixedly connected to the outer wall of the first pipe 1 and the second pipe 2, and the positioning bolt 4-3 is connected to the positioning ring 5.
[0024] like Figure 3 As shown, an inner lining pipe 7 is provided on the inner side of the connecting piece 3, and the inner lining pipe 7 is sleeved on the outer side of the connection between the first pipe 1 and the second pipe 2; a sealing ring 8 is also provided on the outer side of the first pipe 1 and the second pipe 2, and the sealing ring 8 is in contact with the inner wall of the inner lining pipe 7; by providing the inner lining pipe, the structural strength of the connection is increased, and by providing the sealing ring, the sealing of the connection is improved.
[0025] like Figure 4-7 As shown, the connecting member 3 includes two connecting half rings 3-1, one end of the two connecting half rings 3-1 is movably connected by a rotating shaft, and the other end of the two connecting half rings 3-1 is connected by a connecting structure 3-3, four connecting blocks 3-2 are connected to the outer wall of the connecting half ring 3-1, and the connecting block 3-2 is provided with a first mounting hole 3-2-1 matching the pull rod 6.
[0026] The connecting structure 3-3 includes two connecting components, and the two connecting components are connected to the two connecting half rings 3-1; the connecting component includes a fixed seat 3-3-1, and the fixed seat 3-3-1 is connected to the connecting half ring 3-1, and the fixed seat 3-3-1 is connected to a connecting shaft 3-3-2, and two locking buckles 3-3-3 are installed on the connecting shaft 3-3-2, and a limiting spring piece 3-3-4 is arranged below the locking buckle 3-3-3, and the fixed ends of the two limiting spring pieces 3-3-4 are connected together, and the fixed end of the limiting spring piece 3-3-4 is fixed to the fixed seat 3-3-1, and the movable end of the limiting spring piece 3-3-4 passes through the locking buckle 3-3-3 and contacts with the top surface of the locking buckle 3-3-3; specifically, the limiting spring piece 3-3-4 itself has a certain elastic force; The locking buckles 3-3-3 on the rear two connecting components are arranged alternately. When in the locked state, the engaging holes on the locking buckles 3-3-3 are engaged with another connecting shaft 3-3-2. When in use, the movable end of the locking buckle 3-3-3 is lifted upward, and the fixed end of the locking buckle 3-3-3 rotates around the connecting shaft 3-3-2. The engaging holes at the movable end of the locking buckle 3-3-3 are separated from the other connecting shaft 3-3-2. The limiting spring piece 3-3-4 is lifted upward under the drive of the locking buckle 3-3-3, and the four locking buckles 3-3-3 are opened, so that the connecting piece 3 is sleeved at the connection between the first pipe 1 and the second pipe 2. Then, the locking buckle 3-3-3 is engaged with another connecting shaft 3-3-2 again. The limiting spring piece 3-3-4 is re-pressed on the top of the locking buckle 3-3-3 under the action of its own elastic force to prevent the locking buckle 3-3-3 from loosening.
[0027] like Figure 8 As shown, the stabilizing member 4 includes two stabilizing half rings 4-1, which are detachably connected together by bolts, and a second mounting hole 4-1-1 matching the pull rod 6 is opened on the side wall of the stabilizing half ring 4-1.
[0028] Both ends of the pull rod 6 are provided with threads, and the first mounting hole 3-2-1 and the second mounting hole 4-1-1 are both threaded holes. The pull rod 6 is threadedly connected to the stabilizing half ring 4-1 and the connecting block 3-2. The length of the pull rod 6 can be selected as needed. The pull rod 6 can be disassembled and the installation is simple and convenient. By setting the pull rod 6, the first pipe 1 and the second pipe 2 can fit more closely.
[0029] The installation process of the utility model is as follows:
[0030] First, install the stabilizing parts 4 from the ends of the first pipe 1 and the second pipe 2, so that the two stabilizing parts 4 are close to the positioning rings 5 on the first pipe 1 and the second pipe 2 respectively; then, install the sealing ring 8 in the sealing ring installation groove at the ends of the first pipe 1 and the second pipe 2, and put the liner pipe 7 on the outside of the first pipe 1 and the second pipe 2. After that, install the connecting part 3 on the outside of the liner pipe 7, and finally, connect one end of the pull rod 6 to the stabilizing half ring 4-1, and connect the other end of the pull rod 6 to the connecting block 3-2.
[0031] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A prefabricated direct-buried thermal insulation pipe connection structure, comprising a first pipe (1) and a second pipe (2), characterized in that: A connecting piece (3) is provided at the connection between the first pipe (1) and the second pipe (2); a stabilizing piece (4) is provided on the outer sides of the first pipe (1) and the second pipe (2); one side of the stabilizing piece (4) is connected to the connecting piece (3) via a pull rod (6); a mounting plate (4-2) is provided on the other side of the stabilizing piece (4); a positioning bolt (4-3) is provided on the mounting plate (4-2); a positioning ring (5) is provided on the outer walls of the first pipe (1) and the second pipe (2); the positioning bolt (4-3) is connected to the positioning ring (5).
2. The prefabricated direct-buried thermal insulation pipe connection structure according to claim 1 is characterized in that: An inner lining pipe (7) is arranged on the inner side of the connecting piece (3), and the inner lining pipe (7) is sleeved on the outer side of the connection between the first pipe (1) and the second pipe (2).
3. The prefabricated direct-buried thermal insulation pipe connection structure according to claim 2 is characterized in that: The outer sides of the first pipe (1) and the second pipe (2) are also provided with sealing rings (8), and the sealing rings (8) are in contact with the inner wall of the liner pipe (7).
4. The prefabricated direct-buried thermal insulation pipe connection structure according to claim 1 is characterized in that: The connecting member (3) comprises two connecting half rings (3-1), one end of the two connecting half rings (3-1) is hinged, and the other end of the two connecting half rings (3-1) is connected via a connecting structure (3-3), a connecting block (3-2) is provided on the outer wall of the connecting half ring (3-1), and a first mounting hole (3-2-1) matching the pull rod (6) is provided on the connecting block (3-2).
5. The prefabricated direct-buried thermal insulation pipe connection structure according to claim 4 is characterized in that: The connection structure (3-3) comprises two connection components, the two connection components are arranged on the two connection half rings (3-1), the connection components comprise a fixed seat (3-3-1), the fixed seat (3-3-1) is arranged on the connection half ring (3-1), a connection shaft (3-3-2) is arranged on the fixed seat (3-3-1), a locking buckle (3-3-3) is arranged on the connection shaft (3-3-2), a limiting spring piece (3-3-4) is arranged below the locking buckle (3-3-3), one end of the limiting spring piece (3-3-4) is fixed on the fixed seat (3-3-1), and the movable end of the limiting spring piece (3-3-4) contacts the top surface of the locking buckle (3-3-3) after passing through the locking buckle (3-3-3).
6. The prefabricated direct-buried thermal insulation pipe connection structure according to claim 1 is characterized in that: The stabilizing member (4) comprises two stabilizing half rings (4-1), the two stabilizing half rings (4-1) are detachably connected together by bolts, and a second mounting hole (4-1-1) matching the pull rod (6) is provided on the side wall of the stabilizing half ring (4-1).