A natural gas pipeline wall penetration protection device

Abstract

This utility model discloses a wall penetration protection device for natural gas pipelines, including a protective pipe and a sealing assembly. The protective pipe passes through the wall, and the natural gas pipeline passes through the protective pipe. Both ends of the protective pipe have conical surfaces along their inner circumference, with the side of the conical surface near the middle of the protective pipe inclined inwards. The sealing assembly is installed at both ends of the protective pipe and includes a threaded sleeve, a sealing ring, a baffle, and an elastic element. The sealing ring is installed on the end face of the threaded sleeve, which is screwed onto the end of the protective pipe. Under the action of the conical surfaces, the sealing ring deforms inwards and abuts against the outer surface of the natural gas pipeline, forming a detection port between the threaded sleeve and the natural gas pipeline. The baffle has a semi-annular structure, with two baffles installed on opposite sides of the natural gas pipeline. This utility model proposes a wall penetration protection device where both ends of the protective pipe can be sealed, which is beneficial for fire control and preventing small animals from passing through, and reduces the corrosion of the pipeline by rainwater and moisture.

Description

Technical Field

[0001] This utility model relates to the field of pipeline wall penetration technology, and in particular to a natural gas pipeline wall penetration protection device. Background Technology

[0002] Existing natural gas pipelines require protective devices when passing through walls to prevent damage from impacts. Existing natural gas pipeline wall protection devices, as shown in patent application number CN202221887336.0, include a protective pipe, a spring, a connecting plate, and a positioning element. The protective pipe passes through the wall, the connecting plate is installed inside the protective pipe via the spring, and the positioning element is fixedly connected to the inside of the connecting plate. The natural gas pipeline passes through the protective pipe, and the positioning element clamps the natural gas pipeline under the action of the spring. Although the above-mentioned protective device can protect the natural gas pipeline through the spring, there is a large gap between the natural gas pipeline and the protective pipe. On the one hand, rainwater and moisture from the outside can easily enter the gap and corrode the pipeline; on the other hand, small animals can easily enter the room through the gap; furthermore, if a fire occurs on one side of the wall, the flames can extend to the other side of the wall through the gap, causing the fire to spread. Utility Model Content

[0003] To address the aforementioned shortcomings of existing natural gas pipelines, this invention proposes a wall-penetrating protection device. The two ends of the protection pipe can be sealed, which is beneficial for fire control and preventing small animals from passing through, while also reducing the erosion of the pipeline by rainwater and moisture.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A natural gas pipeline wall penetration protection device includes a protective pipe and a sealing assembly. The protective pipe passes through the wall, and the natural gas pipeline passes through the protective pipe. Both ends of the protective pipe have conical surfaces along their inner circumference. The side of the conical surface closest to the middle of the protective pipe is inclined inward. The sealing assembly is installed at both ends of the protective pipe and includes a threaded sleeve, a sealing ring, a baffle, and an elastic element. The sealing ring is installed on the end face of the threaded sleeve. The threaded sleeve is screwed onto the end of the protective pipe. Under the action of the conical surface, the sealing ring deforms inward and abuts against the outer surface of the natural gas pipeline, forming a detection port between the threaded sleeve and the natural gas pipeline. The baffle has a semi-annular structure, and two baffles are provided, located on opposite sides of the natural gas pipeline. The baffles are slidably connected to the side of the threaded sleeve away from the sealing ring and connected to the elastic element. The two baffles hold the natural gas pipeline to close the detection port.

[0005] With the above setup, the baffle can block external flames and small animals, which helps control the fire and prevent small animals from entering the protective pipe. The sealing ring can block rainwater and moisture, reducing corrosion to the pipe.

[0006] Furthermore, the sealing assembly also includes a guide rod and a fixing plate. The guide rod is radially fixedly connected to the side of the baffle away from the natural gas pipeline. The fixing plate is fixedly connected to the threaded sleeve. The fixing plate is provided with a through hole adapted to the guide rod. The guide rod passes through the through hole and is slidably connected to the through hole. An elastic element is installed between the fixing plate and the baffle.

[0007] The above settings improve the stability of the baffle's sliding motion.

[0008] Furthermore, the elastic element is a spring fitted onto the guide rod.

[0009] Furthermore, the width of the detection port is w, 10mm. <w<20mm。

[0010] The above settings make it easy to detect whether there is any air leakage in the protective tube through the detection port.

[0011] Furthermore, the threaded sleeve has a circumferentially arranged mounting groove on the side near the middle of the protective pipe. The cross-section of the mounting groove is T-shaped, and the side of the sealing ring away from the natural gas pipeline is embedded in the mounting groove.

[0012] The above settings facilitate the installation of the sealing ring at the end of the threaded sleeve.

[0013] Furthermore, the end of the protective pipe is flush with the wall surface, and a flange extending away from the natural gas pipeline is provided on the side of the threaded sleeve away from the middle of the protective pipe, covering the gap between the protective pipe and the wall.

[0014] With the above setup, the protective pipe is axially locked in the wall, and the flange can prevent moisture from entering the gap between the protective pipe and the wall. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the protection device in an embodiment.

[0016] Figure 2 This is a front view of the protective device according to an embodiment.

[0017] Figure 3 for Figure 2 AA sectional view.

[0018] Figure 4 This is a schematic diagram of the threaded sleeve being loosened in an embodiment. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] like Figures 1 to 4A natural gas pipeline wall penetration protection device includes a protective pipe 3 and a sealing assembly. The protective pipe 3 passes through a wall 4, and a natural gas pipeline 10 passes through the protective pipe 3. Both ends of the protective pipe 3 are provided with conical surfaces 5 along their inner circumference. The side of the conical surface 5 near the middle of the protective pipe 3 is inclined inward. The sealing assembly is installed at both ends of the protective pipe 3. The sealing assembly includes a threaded sleeve 6, a sealing ring 7, a baffle 8, and an elastic element 9. The sealing ring 7 is installed on the end face of the threaded sleeve 6. The threaded sleeve 6 is screwed onto the end of the protective pipe 3. The sealing ring 7 deforms inward under the action of the conical surface 5 and abuts against the outer surface of the natural gas pipeline 10. A detection port 11 is formed between the threaded sleeve 6 and the natural gas pipeline 10. The baffle 8 has a semi-annular structure. Two baffles 8 are provided and are located on opposite sides of the natural gas pipeline 10. The baffles 8 are slidably connected to the side of the threaded sleeve 6 away from the sealing ring 7 and are connected to the elastic element 9. The two baffles 8 hold the natural gas pipeline 10 to close the detection port 11.

[0021] With the above settings, the baffle 8 can block external flames and small animals, which is beneficial for controlling the fire and preventing small animals from entering the protective pipe 3. The sealing ring 7 can block rainwater and moisture, reducing the corrosion of the pipe.

[0022] When the natural gas pipeline 10 of this application passes through a wall, a wall hole adapted to the protective pipe 3 is opened in the wall 4. The protective pipe 3 passes through the wall hole. Internal threads are provided on the inner sides of both ends of the protective pipe 3. The conical surface 5 is located on the side of the internal thread near the middle of the protective pipe 3. The outer circumference of the conical surface 5 extends to the side of the internal thread near the middle of the protective pipe 3. The inner circumference of the conical surface 5 is inclined towards the middle of the protective pipe 3. The threaded sleeve 6 is screwed into the end of the protective pipe 3 through the internal thread, but not tightened. At this time, the sealing ring 7 has not yet contacted the conical surface 5. The inner diameter of the sealing ring 7 is larger than the outer diameter of the natural gas pipeline 10. Two baffles 8 are arranged vertically on the end face of the threaded sleeve 6. Pushing the baffles 8 by hand allows them to float up and down along the end face of the threaded sleeve 6. The natural gas pipeline 10 passes through the protective pipe 3, creating a gap between the natural gas pipeline 10 and the protective pipe 3, and a gap between the natural gas pipeline 10 and the threaded sleeve 6, forming a detection port 11. Tightening the threaded sleeve 6 inward causes the sealing ring 7 to move closer to the conical surface 5. Under the action of the conical surface 5, the sealing ring 7 deforms inward and abuts against the outer surface of the natural gas pipeline 10, preventing moisture and rainwater from entering the protective pipe 3. Figure 3 Under the action of the elastic element 9, the baffle 8 closes inward to hold the natural gas pipeline 10, sealing the outside of the detection port 11 to prevent small animals and flames. Manually pushing the baffle 8 can separate the two baffles 8, exposing the detection port 11. Loosening the threaded sleeve 6 causes the sealing ring 7 to move away from the conical surface 5 and spring back outward, disengaging the sealing ring 7 from the natural gas pipeline 10. Figure 4 An external detection probe can be inserted into the protective pipe 3 through the detection port 11 to detect whether there is a natural gas leak.

[0023] As one implementation, the sealing assembly also includes a guide rod 12 and a fixing plate 13. The guide rod 12 is radially fixedly connected to the side of the baffle 8 away from the natural gas pipeline 10. The fixing plate 13 is fixedly connected to the threaded sleeve 6. The fixing plate 13 is provided with a through hole adapted to the guide rod 12. The guide rod 12 passes through the through hole and is slidably connected to the through hole. The elastic element 9 is installed between the fixing plate 13 and the baffle 8.

[0024] The above settings improve the stability of the sliding of baffle 8.

[0025] In this application, a guide rod 12 is radially fixedly connected to the outer side of the middle of each baffle 8. The guide rod 12 improves the stability of the baffle 8 sliding along the end face of the threaded sleeve 6 and restricts the direction of the baffle 8 sliding on the end face of the threaded sleeve 6, so that the baffle 8 can only open and close radially. One end of the elastic member 9 is fixedly connected to the fixed plate 13 and the other end is fixedly connected to the baffle 8. The elastic member 9 is compressed and applies a thrust to the baffle 8.

[0026] As one implementation method, the elastic element 9 is a spring fitted onto the guide rod 12.

[0027] As one implementation method, the width of the detection port 11 is w, 10mm. <w<20mm。

[0028] The above settings facilitate the detection of air leakage in the protective tube 3 through the detection port 11.

[0029] As one implementation method, the threaded sleeve 6 is provided with a mounting groove 14 along the circumferential direction on the side near the middle of the protective pipe 3. The cross-section of the mounting groove 14 is T-shaped, and the side of the sealing ring 7 away from the natural gas pipeline 10 is embedded in the mounting groove 14.

[0030] The above settings facilitate the installation of the sealing ring 7 at the end of the threaded sleeve 6.

[0031] As one implementation, the end of the protective pipe 3 is flush with the wall surface of the wall 4, and the threaded sleeve 6 is provided with a flange 15 extending away from the middle of the protective pipe 3, which covers the gap between the protective pipe 3 and the wall 4.

[0032] With the above settings, on the one hand, the protective pipe 3 is axially locked in the wall 4, and on the other hand, the flange 15 can prevent moisture from entering the gap between the protective pipe 3 and the wall 4.

[0033] The fixing plate of this application is fixedly connected to the outer end of the threaded sleeve by a flange. Both ends of the protective tube have flanges that fit against the wall surface, so that the protective tube is axially locked in the wall and external moisture is not easy to enter the gap between the protective tube and the wall hole.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A natural gas pipeline wall penetration protection device, characterized in that, The system includes a protective pipe and a sealing assembly. The protective pipe passes through a wall, and the natural gas pipeline passes through the protective pipe. Both ends of the protective pipe have conical surfaces along their inner circumference. The side of the conical surface closest to the middle of the protective pipe slopes inward. The sealing assembly is installed at both ends of the protective pipe and includes a threaded sleeve, a sealing ring, a baffle, and an elastic element. The sealing ring is installed on the end face of the threaded sleeve, which is screwed onto the end of the protective pipe. The sealing ring deforms inward under the action of the conical surface and abuts against the outer surface of the natural gas pipeline, forming a detection port between the threaded sleeve and the natural gas pipeline. The baffle has a semi-annular structure, and two baffles are provided, located on opposite sides of the natural gas pipeline. The baffles are slidably connected to the side of the threaded sleeve away from the sealing ring and are connected to the elastic element. The two baffles hold the natural gas pipeline to close the detection port.

2. The natural gas pipeline wall penetration protection device according to claim 1, characterized in that, The sealing assembly also includes a guide rod and a fixing plate. The guide rod is radially fixedly connected to the side of the baffle away from the natural gas pipeline. The fixing plate is fixedly connected to a threaded sleeve. The fixing plate is provided with a through hole adapted to the guide rod. The guide rod passes through the through hole and is slidably connected to the through hole. The elastic element is installed between the fixing plate and the baffle.

3. A natural gas pipeline wall penetration protection device according to claim 2, characterized in that, The elastic element is a spring fitted onto the guide rod.

4. A natural gas pipeline wall penetration protection device according to claim 2, characterized in that, The width of the detection port is w, 10mm. <w<20mm。 5. A natural gas pipeline wall penetration protection device according to claim 2, characterized in that, The threaded sleeve has a mounting groove along its circumference on the side near the middle of the protective pipe. The cross-section of the mounting groove is T-shaped, and the sealing ring is embedded in the mounting groove on the side away from the natural gas pipeline.

6. A natural gas pipeline wall penetration protection device according to claim 2, characterized in that, The end of the protective pipe is flush with the wall surface, and the threaded sleeve has a flange extending away from the natural gas pipeline on the side away from the middle of the protective pipe. The flange covers the gap between the protective pipe and the wall.

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