Anti-corrosion structure of buried gas pipeline

Abstract

The utility model discloses an anti-corrosion structure of a buried gas pipeline, which comprises a main communicating pipe, two ends of the main communicating pipe are respectively provided with a second connecting frame and a first connecting frame which are communicated with the gas pipeline, the first connecting frame is in sliding fit with the main communicating pipe, and the outer wall of the main communicating pipe is in threaded connection with a threaded sleeve. And the main communicating pipe is used for reinforcing the movable first connecting frame, and a thrust spring and a sealing plate are arranged on the outer side of the main communicating pipe. The gas pipeline connecting device has the beneficial effects that a first connecting frame can be pressed by a threaded sleeve through threaded transmission, the tightness of connection between the first connecting frame and a gas pipeline is improved, sealing operation can be conducted on a via hole through a sealing plate in cooperation with the elasticity of a thrust spring, the first connecting frame can be installed at the conveying front end of the gas pipeline, and the sealing effect is improved. The vibration condition of the first connecting frame in the fuel gas conveying process can be reduced, and the anti-corrosion effect of the position of the pre-buried pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas pipelines, in particular to an anti-corrosion structure for concealed gas pipelines. Background Art

[0002] Natural gas may contain a small amount of chemical substances such as hydrogen sulfide, which may cause metal corrosion under certain conditions. When installing concealed gas pipelines, the selection and precautions of the interface position between the two ends of the pipeline are very important. In the case of concealed pipelines, it is necessary to ensure that the interface position is not easily invaded by water or moisture to avoid potential safety hazards caused by moisture in the gas pipeline.

[0003] At the existing gas pipeline interface locations, especially at the installation locations that cross holes, the gas pipeline is prone to vibration during gas transportation, causing gas leakage at the connection locations, which may cause unnecessary dangers when leakage occurs. Utility Model Content

[0004] The purpose of the utility model is to provide a concealed gas pipeline anti-corrosion structure in order to solve the above-mentioned problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a concealed gas pipeline anti-corrosion structure, including a main connecting pipe, wherein two ends of the main connecting pipe are respectively provided with a second connecting frame and a first connecting frame connected to the gas pipeline, wherein the first connecting frame is slidably matched with the main connecting pipe, and the outer wall of the main connecting pipe is threadedly connected with a threaded sleeve for reinforcing the movable first connecting frame, and a thrust spring and a sealing plate are provided on the outer side of the main connecting pipe, and the thrust spring is arranged between the sealing plate and the threaded sleeve.

[0007] In some embodiments, a support ring is threadedly connected to the outer side of the second connecting frame, and a rubber layer is provided on a side of the support ring facing the sealing plate.

[0008] In some embodiments, a rubber ring is provided on a side of the sealing plate facing the sealing ring.

[0009] In some embodiments, the cross section of the rubber ring is conical or arc-shaped with the middle portion bent toward the sealing plate.

[0010] In some embodiments, the second connecting frame is a flange or a threaded sleeve structure.

[0011] In some embodiments, a guard plate is connected to the outer side of the threaded sleeve via a connecting rod, and the guard plate is an arc surface structure with a middle portion bent away from the main connecting pipe.

[0012] In some embodiments, a foam sealing layer is filled between the guard plate and the main connecting pipe.

[0013] In some embodiments, there are multiple guard plates, which are arranged on the outer circumference of the threaded sleeve.

[0014] The beneficial effects are:

[0015] Utilizing threaded transmission, the threaded sleeve can be pressed against the first connecting frame, thereby improving the tightness when the first connecting frame is connected to the gas pipeline. Cooperating with the elasticity of the thrust spring, the through hole can be sealed through the sealing plate. By installing the first connecting frame at the front end of the gas pipeline, the vibration of the first connecting frame during the gas transportation process can be reduced, thereby improving the anti-corrosion effect of the pre-buried pipeline position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the second embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the first embodiment of the utility model.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Main connecting pipe; 101. Guide groove; 2. First connecting frame; 3. Threaded sleeve; 4. Thrust spring; 5. Sealing plate; 6. Rubber ring; 7. Guard plate; 8. Second connecting frame. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0022] First embodiment:

[0023] See also Figure 1-Figure 2As shown, the utility model provides a concealed gas pipeline anti-corrosion structure, including a main connecting pipe 1, two ends of the main connecting pipe 1 are respectively provided with a second connecting frame 8 and a first connecting frame 2 connected to the gas pipeline, wherein the first connecting frame 2 is slidably matched with the main connecting pipe 1, and the outer wall of the main connecting pipe 1 is threadedly connected with a threaded sleeve 3 for reinforcing the movable first connecting frame 2, and a thrust spring 4 and a sealing plate 5 are provided on the outer side of the main connecting pipe 1, and the thrust spring 4 is arranged between the sealing plate 5 and the threaded sleeve 3;

[0024] When the device is in use, the second connecting frame 8 and the first connecting frame 2 are used to connect the main connecting pipe 1 to the gas pipeline. When in use, since the first connecting frame 2 and the main connecting pipe 1 are in a sliding fit state, in order to improve the stability of the connection and reduce the airtightness and anti-corrosion effect at the movable connection position, the threaded sleeve 3 is rotated, and the threaded sleeve 3 can be moved outside the main connecting pipe 1 by thread transmission, so that the threaded sleeve 3 moves toward the first connecting frame 2, which can stably support the first connecting frame 2 and improve the stability of the connection between the first connecting frame 2 and the pipeline, thereby improving the anti-corrosion effect of the pipeline. Another elasticity of the thrust spring 4 can form a support for the sealing plate 5. When passing through the hole, the sealing plate 5 can play a sealing effect at the position of the hole. In the preferred installation method, the first connecting frame 2 is close to the front end of the delivery direction of the gas, which can reduce the vibration of the first connecting frame 2 during the gas delivery process, thereby improving the anti-corrosion effect of the pre-buried pipeline position.

[0025] The second embodiment is different from the first embodiment in that:

[0026] A support ring is threadedly connected to the outer side of the second connecting frame 8, and a rubber layer is provided on the side of the support ring facing the sealing plate 5. In the connection for the through hole, the support ring can be connected to the outer side of the second connecting frame 8, and one side of the hole is limited, and the other side of the hole is limited and sealed by the sealing plate 5. Furthermore, a rubber ring 6 is provided on the side of the sealing plate 5 facing the sealing ring, and the cross-section of the rubber ring 6 is conical or arc-shaped with the middle part bent toward the sealing plate 5. In this way, one side of the rubber ring 6 is sealed by the rubber layer, and the elasticity of the thrust spring 4 is cooperated to perform a sealing operation on one side of the sealing plate 5 in the hole through the rubber ring 6.

[0027] The second connecting frame 8 and the first connecting frame 2 are both flange or threaded sleeve structures. When the second connecting frame 8 and the first connecting frame 2 are flange structures, they can be connected to the flange on the pipeline by bolts. When the second connecting frame 8 and the first connecting frame 2 are threaded sleeve structures, the bolts on the sleeve structure can be used to achieve connection with the gas pipe, which makes the operation simpler and more convenient.

[0028] The third embodiment is different from the first embodiment in that:

[0029] The sealing plate 5 is an annular structure formed by connecting two half rings, and the two half rings form an annular structure through bolts. After the bolts on the sealing plate 5 are released, the sealing plate 5 can be disassembled from the outside of the main connecting pipe 1. The outside of the threaded sleeve 3 is connected with a guard plate 7 through a connecting rod. The guard plate 7 is an arc surface structure with the middle part bent away from the main connecting pipe 1. The guard plate 7 is located on the outside of the sealing plate 5. When the threaded sleeve 3 is rotated, the guard plate 7 on the outside of the threaded sleeve 3 is used to form an auxiliary rotation structure so that the torque of rotating the threaded sleeve 3 becomes larger, which is convenient for rotating the threaded sleeve 3, so that the threaded sleeve 3 moves on the outside of the main connecting pipe 1. The threaded sleeve 3 is threadedly connected to the main connecting pipe 1, and a guide groove 101 is provided on the outside of the main connecting pipe 1. The first connecting frame 2 is slidably arranged on the guide groove 101. After the threaded sleeve 3 is rotated, the threaded sleeve 3 can be moved on the outside of the main connecting pipe 1 by means of thread transmission. When the threaded sleeve 3 moves toward the first connecting frame 2, the first connecting frame 2 can be pushed by the threaded sleeve 3, so as to support the first connecting frame 2, and the supporting effect of the first connecting frame 2 is better. After the first connecting frame 2 is fixed, when the main connecting pipe 1 can be buried by the guard plate 7, the guard plate 7 is isolated, and a foam sealing layer is filled between the guard plate 7 and the main connecting pipe 1, so that the foam sealing layer can isolate the main connecting pipe 1, the threaded sleeve 3 and the external concrete, thereby assisting the corrosion protection of the gas pipeline.

[0030] Furthermore, there are multiple guard plates 7, which are arranged on the outer circumference of the threaded sleeve 3, so as to surround the threaded sleeve 3, limit the foam sealing layer, and form a protective shell after the main connecting pipe 1 is pre-buried.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A buried gas pipeline anti-corrosion structure, comprising a main connecting pipe (1), characterized in that: The two ends of the main connecting pipe (1) are respectively provided with a second connecting frame (8) and a first connecting frame (2) connected to the gas pipeline, wherein the first connecting frame (2) is slidably matched with the main connecting pipe (1), and the outer wall of the main connecting pipe (1) is threadedly connected with a threaded sleeve (3) for reinforcing the movable first connecting frame (2), and the outer side of the main connecting pipe (1) is provided with a thrust spring (4) and a sealing plate (5), and the thrust spring (4) is arranged between the sealing plate (5) and the threaded sleeve (3).

2. The anti-corrosion structure for a concealed gas pipeline according to claim 1, characterized in that: A support ring is threadedly connected to the outer side of the second connecting frame (8), and a rubber layer is provided on the side of the support ring facing the sealing plate (5).

3. The anti-corrosion structure for a buried gas pipeline according to claim 2 is characterized in that: A rubber ring (6) is provided on the side of the sealing plate (5) facing the sealing ring.

4. The anti-corrosion structure for a buried gas pipeline according to claim 3 is characterized in that: The cross section of the rubber ring (6) is conical or arc-shaped with the middle portion bent toward the sealing plate (5).

5. The anti-corrosion structure for a buried gas pipeline according to claim 1 is characterized in that: The second connecting frame (8) is in the form of a flange or a threaded pipe sleeve structure.

6. The anti-corrosion structure for buried gas pipeline according to claim 1, characterized in that: The outer side of the threaded sleeve (3) is connected to a guard plate (7) via a connecting rod, and the guard plate (7) is in an arc surface structure with the middle portion bent away from the main connecting pipe (1).

7. The anti-corrosion structure for a buried gas pipeline according to claim 6, characterized in that: A foam sealing layer is filled between the guard plate (7) and the main connecting pipe (1).

8. The anti-corrosion structure for a concealed gas pipeline according to claim 6, characterized in that: There are a plurality of guard plates (7), which are arranged on the outer circumference of the threaded sleeve (3).

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