Direct burial laying device of cold and hot shared pipeline
By setting grooves and limiting plates on both sides of the pipe to form a locking structure, combined with threaded connections and protective structures, the problem of unstable pipe connections in direct-buried laying devices for both hot and cold water pipes is solved, and the sealing and protection are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING JINNING ENERGY TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-04-28
AI Technical Summary
Existing direct-buried pipe laying devices for both hot and cold water systems have difficulty ensuring the sealing and stability of the connection points when multiple pipes are connected, and are prone to detachment.
The pipe body is designed with grooves and limiting plates on both sides. The protrusions on the inner side of the limiting plates are inserted into the grooves in the pipe body. The pipe is fixed by the threaded connection of fixing screws and nuts. Rubber gaskets and sealing rings are used to enhance the sealing performance. A protective structure is installed on the outside of the pipe body to buffer the impact force.
It achieves stable connection of multiple pipes, enhances the sealing and protection of the connection, prevents pipes from falling off, and improves the heat resistance and cold resistance of the pipes.
Smart Images

Figure CN224174803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy supply station pipeline laying technology, and in particular to a direct burial laying device for a combined hot and cold water pipeline. Background Technology
[0002] Direct burial, or simply direct burial, refers to the method of laying pipelines directly in the soil. Energy stations are centralized cooling and heating facilities, mainly used to meet the centralized cooling and heating needs of a region. Energy stations can use pipelines for both cooling and heating, and adopt the direct burial method. The energy supply in the energy station is based on the heat source tower heat pump to bear the basic load. When the heating supply is insufficient in winter, it is supplemented by electric boiler heat storage and gas boiler. When the cooling supply is insufficient in summer, it is supplemented by heat storage and electric chillers. When the pipeline is directly buried, a direct burial device for both cooling and heating pipelines is required.
[0003] While current direct-buried installation systems for shared hot and cold water pipes can generally meet people's needs, some problems still exist, as detailed below:
[0004] The direct-buried installation device for shared hot and cold water pipes requires connecting multiple pipes together. When connecting multiple pipes, it is necessary to ensure the sealing and stability of the connection and to prevent the pipes from falling off. Utility Model Content
[0005] The purpose of this invention is to provide a direct-buried laying device for shared hot and cold water pipes, in order to solve the defect of existing direct-buried laying devices for shared hot and cold water pipes that are difficult to connect multiple pipes.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a direct-buried laying device for a combined hot and cold water pipeline, comprising a pipe body;
[0007] The tube body has grooves on both sides, through holes inside, and a heat insulation structure inside.
[0008] A protective structure is installed on the outside of the tube body, and a limiting structure is installed on one side of the tube body. The limiting structure includes a limiting plate installed on one side of the tube body.
[0009] A rubber pad is installed on the inner side of the limiting plate, and baffles are installed at the top and bottom of the limiting plate. A fixing screw passes through the middle of the baffle.
[0010] In use, the inner side of the limiting plate is first provided with symmetrically distributed protrusions. The protrusions can be inserted into the grooves of the two tubes respectively to connect and fix the two tubes together. Then, the fixing screws and nuts form a threaded connection. After the fixing screws pass through the baffle, the nuts can be tightened to fix the two limiting plates together. The protective plate can protect the surface of the tubes, buffer the impact force received by the tubes, and prevent the tubes from being damaged.
[0011] Furthermore, a protrusion is installed on the inner side of the rubber pad, a sealing ring is provided on the outer side of the protrusion, and a nut is installed on one end of the fixing screw. The limiting structure can fix the tubes together.
[0012] Furthermore, the outer side wall of the fixing screw is uniformly provided with external threads, and the inner side wall of the nut is uniformly provided with internal threads that cooperate with the external threads. The fixing screw and the nut are threadedly connected, and the fixing screw and the nut can cooperate to guide the limiting plate.
[0013] Furthermore, the outer diameter of the protrusion is smaller than the inner diameter of the groove, and the protrusion and groove form an engaging structure, which allows the limiting plate and the tube to be fixed more stably.
[0014] Furthermore, the protective structure includes a rubber rod installed on the outside of the tube body, a protective plate installed on the outside of the rubber rod, a soft pad installed on the outside of the protective plate, and partitions installed on both sides of the protective plate. The protective structure can fix the tube body.
[0015] Furthermore, the thermal insulation structure includes a thermal insulation plate installed on the inner side of the pipe body, a protrusion installed on the inner side of the thermal insulation plate, and a groove provided on the inner side of the protrusion. The thermal insulation structure can enhance the thermal insulation performance of the pipe body.
[0016] Furthermore, the grooves are arranged in a ring shape, and the grooves are arranged at equal intervals on the inner side of the protrusions, allowing the insulation plate to expand and contract with temperature changes.
[0017] The direct burial device for shared hot and cold pipes provided by this utility model has the following advantages: during use, multiple pipes can be connected through the connecting structure to enhance the sealing between pipes; the pipe surface can be protected through the protective structure; and the heat resistance and cold resistance of the inner wall of the pipe can be enhanced through the heat insulation structure.
[0018] By installing a limiting plate on one side of the pipe body, the limiting plate is semi-circular. When the two limiting plates are put together, the pipe ends of the two pipe bodies can be clamped in the middle. The inner side of the limiting plate is provided with symmetrically distributed protrusions, which can be inserted into the grooves of the two pipe bodies to connect and fix the two pipe bodies together. After the fixing screw passes through the baffle, the nut can be tightened. The two limiting plates are fixed together by the fixing screw and nut. The limiting plate can fix the pipe body. The rubber gasket on the inner side of the limiting plate can enhance the sealing between the pipe bodies. This achieves the purpose of facilitating the connection of the pipes in the direct burial laying device for shared hot and cold water pipelines.
[0019] By installing a protective plate on the outside of the pipe body, and connecting the protective plate and the pipe body with a rubber rod, the protective plate can protect the surface of the pipe body. The protective plate can be made of steel, and the rubber rod is elastic and can buffer the impact force received by the pipe body. The baffle can be made of rubber and can prevent soil from entering the gap between the pipe body and the protective plate. The soft pad can be made of sponge and can prevent damage to the protective plate. In this way, the direct-buried laying device for shared hot and cold water pipelines can be conveniently protected for the pipe body. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0021] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;
[0022] Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of a portion of point A in the middle section;
[0023] Figure 4 This is a partial three-dimensional structural diagram of the limiting structure of this utility model;
[0024] Figure 5 This is a partial three-dimensional structural diagram of the thermal insulation structure of this utility model.
[0025] The following are the annotations in the figure: 1. Pipe body; 2. Groove; 3. Through hole; 4. Limiting structure; 401. Limiting plate; 402. Rubber pad; 403. Baffle; 404. Sealing ring; 405. Protrusion; 406. Fixing screw; 407. Nut; 5. Protective structure; 501. Protective plate; 502. Partition; 503. Rubber rod; 504. Soft pad; 6. Thermal insulation structure; 601. Thermal insulation plate; 602. Protrusion; 603. Groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-5 One embodiment of this utility model is a direct-buried laying device for a shared hot and cold pipeline, comprising a pipe body 1.
[0028] The pipe body 1 has grooves 2 on both sides, through holes 3 inside the pipe body 1, and a heat insulation structure 6 inside the pipe body 1. The heat insulation structure 6 includes a heat insulation plate 601 installed on the inner side of the pipe body 1, a protrusion 602 installed on the inner side of the heat insulation plate 601, and a groove 603 provided on the inner side of the protrusion 602. The grooves 603 are distributed in a ring and are arranged at equal intervals on the inner side of the protrusion 602.
[0029] See attached document Figure 2 and attached Figure 5 As shown, a heat insulation plate 601 is provided inside the pipe body 1. The heat insulation plate 601 can be made of heat insulation cotton material, which can reduce the heat received by the pipe body 1 and prevent the pipe from being damaged due to overheating or overcooling. At the same time, the surface of the heat insulation plate is provided with protrusions 602, and grooves 603 are arranged at equal intervals between the protrusions 602, which can prevent the heat insulation plate from being damaged due to thermal expansion and contraction.
[0030] A protective structure 5 is installed on the outside of the pipe body 1. The protective structure 5 includes a rubber rod 503 installed on the outside of the pipe body 1, a protective plate 501 installed on the outside of the rubber rod 503, a soft pad 504 installed on the outside of the protective plate 501, and partitions 502 installed on both sides of the protective plate 501.
[0031] See attached document Figure 1-3 As shown, the protective plate 501 and the pipe body 1 are connected by a rubber rod 503. The protective plate 501 can protect the surface of the pipe body 1. The protective plate 501 can be made of steel. The rubber rod 503 is elastic and can buffer the impact force received by the pipe body 1. The partition 502 can be made of rubber and can prevent soil from entering the gap between the pipe body 1 and the protective plate 501. The soft pad 504 can be made of sponge and can prevent the protective plate 501 from being damaged.
[0032] A limiting structure 4 is installed on one side of the pipe body 1. The limiting structure 4 includes a limiting plate 401 installed on one side of the pipe body 1.
[0033] A rubber pad 402 is installed on the inner side of the limiting plate 401, and a protrusion 405 is installed on the inner side of the rubber pad 402. The outer diameter of the protrusion 405 is smaller than the inner diameter of the groove 2, and the protrusion 405 and the groove 2 form an engaging structure.
[0034] A sealing ring 404 is provided on the outer side of the protrusion 405, and a nut 407 is installed on one end of the fixing screw 406.
[0035] The top and bottom ends of the limiting plate 401 are both equipped with baffles 403. A fixing screw 406 passes through the middle of the baffle 403. External threads are evenly provided on the outer side wall of the fixing screw 406. Internal threads that cooperate with the external threads are evenly provided on the inner side wall of the nut 407. The fixing screw 406 and the nut 407 are threadedly connected.
[0036] See attached document Figure 1 and attached Figure 4 As shown, the limiting plate 401 is semi-circular. When the two limiting plates 401 are put together, the tube ends of the two tube bodies 1 can be clamped in the middle. The inner side of the limiting plate 401 is provided with symmetrically distributed protrusions 405. The protrusions 405 can be respectively inserted into the grooves 2 of the two tube bodies 1 to connect and fix the two tube bodies 1 together. Then, the fixing screw 406 and the nut 407 form a threaded connection. After the fixing screw 406 passes through the baffle 403, the nut 407 can be tightened to fix the two limiting plates 401 together. The limiting plate 401 can fix the tube body 1. The rubber gasket 402 on the inner side of the limiting plate 401 can enhance the sealing between the tube bodies 1. The sealing ring 404 can be made of rubber material and can enhance the sealing between the groove 2 and the protrusion 405.
[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A direct-buried installation device for a combined hot and cold water pipeline, comprising a pipe body (1); Its features are: The tube body (1) has grooves (2) on both sides, through holes (3) inside the tube body (1), and a heat insulation structure (6) inside the tube body (1). A protective structure (5) is installed on the outside of the tube body (1), and a limiting structure (4) is installed on one side of the tube body (1). The limiting structure (4) includes a limiting plate (401) installed on one side of the tube body (1). A rubber pad (402) is installed on the inner side of the limiting plate (401), and a baffle (403) is installed at the top and bottom of the limiting plate (401). A fixing screw (406) passes through the middle position of the baffle (403).
2. The direct-buried laying device for a combined hot and cold water pipeline according to claim 1, characterized in that: The inner side of the rubber pad (402) is provided with a protrusion (405), the outer side of the protrusion (405) is provided with a sealing ring (404), and one end of the fixing screw (406) is provided with a nut (407).
3. The direct-buried laying device for a combined hot and cold water pipeline according to claim 2, characterized in that: The fixing screw (406) has external threads evenly distributed on its outer side wall, and the nut (407) has internal threads evenly distributed on its inner side wall that cooperate with the external threads. The fixing screw (406) and the nut (407) are connected by threads.
4. The direct-buried laying device for a combined hot and cold water pipeline according to claim 2, characterized in that: The outer diameter of the protrusion (405) is smaller than the inner diameter of the groove (2), and the protrusion (405) and the groove (2) form an engaging structure.
5. The direct-buried laying device for a combined hot and cold water pipeline according to claim 1, characterized in that: The protective structure (5) includes a rubber rod (503) installed on the outside of the tube body (1), a protective plate (501) installed on the outside of the rubber rod (503), a soft pad (504) installed on the outside of the protective plate (501), and partitions (502) installed on both sides of the protective plate (501).
6. The direct-buried laying device for a combined hot and cold water pipeline according to claim 1, characterized in that: The insulation structure (6) includes an insulation plate (601) installed on the inner side of the tube body (1), a protrusion (602) installed on the inner side of the insulation plate (601), and a groove (603) provided on the inner side of the protrusion (602).
7. A direct-buried laying device for a combined hot and cold water pipeline according to claim 6, characterized in that: The grooves (603) are arranged in a ring shape, and the grooves (603) are arranged at equal intervals on the inner side of the protrusions (602).