Pipeline protection device
By designing components for pipeline protection devices, including sleeves, wing rings, sealing rings, and tightening pipes, the problem of insufficient corrosion and waterproofing effects of gas pipeline protective layers has been solved, achieving higher sealing performance and seismic resistance, and improving the safety and construction efficiency of gas pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-03-24
AI Technical Summary
The existing protective layer of gas pipelines has insufficient anti-corrosion and waterproofing effects due to its own structural reasons, which poses a safety hazard.
The pipe protection device consists of components such as sleeve, wing ring, sealing ring, limit ring, tightening pipe and flange. The sealing baffle is tightened by tightening the nut. The flexible sealing ring expands laterally under vertical pressure to enhance the sealing effect. Combined with the design of flexible filler layer, sealant layer and conical cap, it enhances waterproof and anti-corrosion performance.
It improves the waterproofing and corrosion resistance of gas pipelines, enhances the safety and reliability of the overall structure, adapts to a certain degree of vibration and disturbance, and improves construction efficiency.
Smart Images

Figure CN224033262U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pipeline protection device, belonging to the field of gas pipeline construction technology. Background Technology
[0002] With economic growth and urbanization, the demand for natural gas is constantly increasing, and the corresponding residential gas supply system is continuously improving, including the construction of urban gas pipeline networks and liquefied petroleum gas (LPG) supply pipelines. More and more regions are beginning to use natural gas as their primary residential fuel, which has led to frequent gas safety issues.
[0003] Because the construction process of metal gas pipelines is relatively complex, the construction of indoor gas pipelines using the concealed installation method within the structure is more difficult and involves more cross-operations. After the protective layer of the pre-embedded gas pipeline is installed within the floor slab, the corrosion and waterproof effects are insufficient due to the structure itself, and damage often occurs.
[0004] In summary, existing gas pipeline protective layers suffer from technical problems due to their structural limitations, resulting in insufficient corrosion and waterproofing effects. Utility Model Content
[0005] This utility model aims to solve the technical problem of insufficient corrosion and waterproofing effects of existing gas pipeline protective layers due to their structural limitations. It provides a pipeline protection device comprising a sleeve, wing rings, a sealing ring, a limiting ring, a tightening pipe, and a flange. An externally mounted pipeline body is vertically arranged. The sleeve is fitted onto the outside of the pipeline body. Several wing rings are fixedly fitted onto the outer wall of the sleeve. The limiting ring is fixedly installed on the inner wall of the sleeve. The sealing ring, sealing baffle, and tightening pipe are all fitted onto the outside of the pipeline body. A sealing ring is installed on the top surface of the limiting ring, a sealing baffle is installed on the top surface of the sealing ring, and a tightening pipe is installed on the top surface of the sealing baffle. A flange is fixedly installed on the outer wall of the tightening pipe. The flange is detachably connected to the wing rings, and the tightening pipe tightens the sealing baffle through the flange.
[0006] As another improvement of this utility model, several adjusting shims are provided between the limiting ring and the sealing ring.
[0007] As another improvement of this utility model, a flexible filler layer is filled between the pipe body and the sleeve, and the flexible filler layer is disposed on the lower side of the limiting ring.
[0008] As another improvement of this utility model, the flexible filler layer is made of asphalt hemp fiber layer, polystyrene board layer or polyvinyl chloride foam board layer.
[0009] As another improvement of this utility model, a layer of sealant is filled between the pipe body and the top clamping pipe.
[0010] As another improvement of this utility model, the sealant layer is a polysulfide sealant layer or a polyurethane sealant layer.
[0011] As another improvement of this utility model, three wing rings are evenly arranged from top to bottom. The three wing rings are fixedly fitted onto the outer wall of the sleeve by welding, and the limiting ring is fixedly installed on the inner wall of the sleeve by welding.
[0012] As another improvement of this utility model, a threaded hole is provided on the top surface of the wing ring at the top of the outer wall of the sleeve. The bolt passes through the flange and the threaded hole, and the tightening pipe tightens the sealing baffle by tightening the nut.
[0013] As another improvement of this utility model, it also includes a conical cover, which is fitted onto the outside of the pipe body and fastened to the upper surface of the external concrete layer.
[0014] As another improvement of this utility model, the conical cover has a vertically spaced mounting seam in the middle.
[0015] The beneficial effects of this utility model are:
[0016] This utility model discloses a pipeline protection device. The tightening tube uses a tightening nut to press against the sealing baffle, thereby compressing the sealing ring on the lower side of the sealing baffle. Under vertical pressure, the flexible sealing ring tends to expand laterally, enhancing the sealing effect and thus improving the waterproof and corrosion-resistant properties of the pipeline protection device. This enhances the safety of gas pipelines. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a pipeline protection device according to this utility model.
[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0019] Figure 3 This is a schematic diagram of the conical cap. Detailed Implementation
[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It should be noted that the positional relationships indicated by terms such as "upper," "lower," "front," and "rear" are only based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the referred components have a specific orientation, or are constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Specific implementation method one: Combining Figures 1 to 2 This embodiment describes a pipeline protection device, which includes a sleeve 2, a wing ring 3, a sealing ring 4, a sealing baffle 8, a limiting ring 5, a tightening pipe 6, and a flange 7. An external pipeline body 1 is vertically arranged, with the sleeve 2 fitted onto the outside of the pipeline body 1. Several wing rings 3 are fixedly fitted onto the outer wall of the sleeve 2, and the limiting ring 5 is fixedly installed on the inner wall of the sleeve 2. The sealing ring 4, sealing baffle 8, and tightening pipe 6 are all fitted onto the outside of the pipeline body 1. The sealing ring 4 is installed on the top surface of the limiting ring 5, the sealing baffle 8 is installed on the top surface of the sealing ring 4, and the tightening pipe 6 is installed on the top surface of the sealing baffle 8. The flange 7 is fixedly installed on the outer wall of the tightening pipe 6, and the flange 7 is detachably connected to the wing ring 3. The tightening pipe 6 tightens the sealing baffle 8 through the flange 7.
[0022] When the flexible sealing ring is subjected to vertical compression, it tends to expand laterally, enhancing the sealing effect and thus improving the waterproof and corrosion-resistant properties of this pipeline protection device. This enhances the safety of gas pipelines.
[0023] Specific Implementation Method Two: Combining Figures 1 to 2 This embodiment differs from specific embodiment one in that it includes several adjusting shims 9 between the limiting ring 5 and the sealing ring 4. These adjusting shims 9 are fitted onto the outside of the pipe body 1. This design adjusts the distance between the sealing ring and the tightening pipe, making it more suitable and thus enhancing the overall sealing effect. Other components and connection methods are the same as in specific embodiment one.
[0024] Specific implementation method three: Combining Figures 1 to 2This embodiment differs from specific embodiment one in that a flexible filler layer 10 is filled between the pipe body 1 and the sleeve 2, and the flexible filler layer 10 is located below the limiting ring 5. The purpose of this design is to enhance the seismic performance of the overall structure, enabling it to withstand a certain degree of vibration disturbance and improving the overall structural reliability. Other components and connection methods are the same as in specific embodiment one or two.
[0025] Specific implementation method four: Combination Figures 1 to 2 This embodiment differs from specific embodiment one in that the flexible filler layer 10 is made of asphalt-impregnated hemp fiber, polystyrene board, or polyvinyl chloride foam board. This design enhances the overall structure's seismic performance, enabling it to withstand a certain degree of vibration and thus improving its reliability. Other components and connection methods are the same as in any one of specific embodiments one through three.
[0026] Specific Implementation Method Five: Combining Figures 1 to 2 This embodiment differs from specific embodiment one in that a sealant layer 11 is filled between the pipe body 1 and the tightening pipe 6. The sealant layer 11 is applied after the tightening pipe 6 has tightened the sealing baffle. This design enhances sealing performance and improves waterproofing and corrosion resistance. Other components and connection methods are the same as in any one of specific embodiments one through four.
[0027] Specific Implementation Method Six: Combination Figures 1 to 2 This embodiment differs from specific embodiment one in that the sealant layer 11 is made of polysulfide or polyurethane sealant. This design enhances sealing performance and improves waterproofing and corrosion resistance. Other components and connection methods are the same as in any one of specific embodiments one through five.
[0028] Specific implementation method seven: Combination Figures 1 to 2 This embodiment differs from specific embodiment one in that three wing rings 3 are evenly arranged from top to bottom. The three wing rings 3 are fixedly fitted onto the outer wall of the sleeve 2 by welding, and the limiting ring 5 is fixedly installed on the inner wall of the sleeve 2 by welding. After welding the wing rings and limiting ring to the sleeve, they are pre-embedded and constructed simultaneously with the concrete pouring layer, fixing them in the concrete layer to improve waterproofing and corrosion resistance. Other components and connection methods are the same as any one of specific embodiments one through six.
[0029] Specific implementation method eight: Combination Figures 1 to 2This embodiment differs from specific embodiment one in that the top surface of the wing ring 3 on the outermost side wall of the sleeve 2 has a threaded hole. Bolts pass through the flange 7 and the threaded hole, and the tightening pipe 6 tightens the sealing baffle 8 through the tightening nut. When the flexible sealing ring is subjected to vertical compression, it tends to expand laterally, enhancing the sealing effect and thus improving the waterproof and corrosion-resistant properties of the pipeline protection device in this embodiment. This enhances the safety of the gas pipeline. Other components and connection methods are the same as any one of specific embodiments one through seven.
[0030] Specific Implementation Method Nine: Combining Figures 1 to 3 This embodiment differs from specific embodiment one in that it also includes a conical cap 12. The conical cap 12 is fitted onto the outside of the pipe body 1 and fastens to the upper surface of the external concrete layer. This design enhances the waterproofing and corrosion resistance of the pipe protection device in this embodiment, thereby improving the safety of the gas pipeline. Other components and connection methods are the same as in any one of specific embodiments one through eight.
[0031] Specific Implementation Method Ten: Combining Figures 1 to 3 This embodiment differs from specific embodiment one in that the conical cover 12 has a vertically formed installation seam 13 in the middle. This design facilitates installation; after the conical cover 12 is fastened onto the upper surface of the external concrete layer, the installation seam is welded, improving construction efficiency. Other components and connection methods are the same as in any one of specific embodiments one through nine.
[0032] Combination Figures 1 to 3 Explanation of the working principle of this utility model:
[0033] This utility model pertains to a flexible gas pipeline protection device, suitable for gas pipelines penetrating walls. After welding the wing ring and limiting ring to the sleeve, the device is pre-embedded and constructed simultaneously with the concrete pouring layer. The tightening pipe 6 tightens the sealing baffle 8 via a tightening nut. Under vertical pressure, the flexible sealing ring tends to expand laterally, enhancing the sealing effect and providing a certain degree of resistance to disturbance.
[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A pipe protection device, characterized in that It includes a sleeve (2), a wing ring (3), a sealing ring (4), a sealing baffle (8), a limiting ring (5), a tightening pipe (6), and a flange (7); the external pipe body (1) is arranged vertically, the sleeve (2) is fitted on the outside of the pipe body (1), several wing rings (3) are fixedly fitted on the outer wall of the sleeve (2), the limiting ring (5) is fixedly installed on the inner wall of the sleeve (2), the sealing ring (4), the sealing baffle (8) and the tightening pipe (6) are all fitted on the outside of the pipe body (1), the sealing ring (4) is installed on the top surface of the limiting ring (5), the sealing baffle (8) is installed on the top surface of the sealing ring (4), the tightening pipe (6) is installed on the top surface of the sealing baffle (8), the flange (7) is fixedly installed on the outer wall of the tightening pipe (6), the flange (7) is detachably connected to the wing ring (3), and the tightening pipe (6) tightens the sealing baffle (8) through the flange (7).
2. A pipe protection device according to claim 1, characterised in that Several adjusting shims (9) are provided between the limiting ring (5) and the sealing ring (4), and the adjusting shims (9) are fitted on the outside of the pipe body (1).
3. A pipe protector according to claim 1, wherein, A flexible filler layer (10) is filled between the pipe body (1) and the sleeve (2), and the flexible filler layer (10) is located on the lower side of the limiting ring (5).
4. A pipe protection device according to claim 3, wherein, The flexible filler layer (10) is made of asphalt hemp fiber layer, polystyrene board layer or polyvinyl chloride foam board layer.
5. A pipeline protection device according to claim 1, characterized in that, A layer of sealant (11) is filled between the pipe body (1) and the top clamping pipe (6).
6. A pipeline protection device according to claim 5, characterized in that, The sealant layer (11) is a polysulfide sealant layer or a polyurethane sealant layer.
7. A pipeline protection device according to claim 1, characterized in that, Three wing rings (3) are evenly arranged from top to bottom. The three wing rings (3) are fixedly fitted on the outer wall of the sleeve (2) by welding. The limiting ring (5) is fixedly installed on the inner wall of the sleeve (2) by welding.
8. A pipeline protection device according to claim 7, characterized in that, A threaded hole is provided on the top surface of the wing ring (3) at the top of the outer wall of the sleeve (2). The bolt passes through the flange (7) and the threaded hole. The tightening pipe (6) tightens the sealing baffle (8) by tightening the nut.
9. A pipeline protection device according to claim 1, characterized in that... It also includes a conical cap (12) which is fitted onto the outside of the pipe body (1) and fastens to the upper surface of the external concrete layer.
10. A pipeline protection device according to claim 9, characterized in that, The conical cap (12) has a vertically opening (13) in the middle.