Gas pipeline with anti-corrosion function

Abstract

The gas pipeline with the anti-corrosion function comprises a main conveying pipe, a buffering inner layer is arranged on the inner wall of the main conveying pipe, and a plurality of damping protruding rings are arranged on the outer wall of the main conveying pipe. The main conveying pipe further comprises a corrugated belt, the corrugated belt is detachably arranged on the outer side of the damping convex ring, the corrugated belt extends in the length direction of the main conveying pipe, the section of the corrugated belt in the axial direction of the main conveying pipe is of a continuous concave-convex structure, and the side wall, facing the main conveying pipe, of the corrugated belt is in clearance fit with the damping convex ring. The device has the beneficial effects that the buffering inner layer on the inner wall of the main conveying pipe can be used for buffering fuel gas, the impact force of the fuel gas on the inner wall of the main conveying pipe is reduced, and the fuel gas is prevented from making contact with the inner wall of the main conveying pipe; when the pipeline is buried underground, the impact of external soil on the main conveying pipe can be reduced, water vapor blocking on the main conveying pipe is formed in cooperation with the corrugated belt, and the damping and anti-corrosion effects of the gas pipeline are improved.

Description

Technical Field

[0001] The utility model relates to the field of gas transportation, in particular to a gas pipeline with an anti-corrosion function. Background Art

[0002] The gas pipe is a pipeline system used to transport gas, mainly used to transport natural gas or liquefied petroleum gas from the supply source to the user's equipment or buildings. During the gas transportation process, the pipeline will vibrate, which will cause impact on the pipeline, causing fatigue cracks or damage to the pipeline, thus affecting the safe operation of the gas system.

[0003] Most of the existing pre-buried gas pipelines are rigid structures with poor shock absorption and protection effects. In addition, natural gas and liquefied petroleum gas may contain corrosive substances such as moisture and sulfides, which will corrode pipeline materials (such as steel pipes). The gas directly contacts the inner wall of the pipeline, which can easily cause the pipeline wall to become thinner and the strength to decrease, which can easily cause leakage. Utility Model Content

[0004] The purpose of the present invention is to provide a gas pipeline with anti-corrosion function in order to solve the above 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 gas pipeline with anti-corrosion function, comprising a main delivery pipe, wherein the inner wall of the main delivery pipe is provided with a buffer inner layer, and the outer wall of the main delivery pipe is provided with a plurality of shock-absorbing convex rings, and the shock-absorbing convex rings are evenly distributed along the length direction of the main delivery pipe;

[0007] It also includes a corrugated belt, which is detachably arranged on the outer side of the shock-absorbing convex ring. The corrugated belt extends along the length direction of the main conveying pipe, and presents a continuous concave-convex structure along the axial section of the main conveying pipe. The corrugated belt is gap-matched with the shock-absorbing convex ring toward the side wall of the main conveying pipe.

[0008] In some embodiments, the inner wall of the main conveying pipe is shot peened.

[0009] In some embodiments, connecting ribs are provided between the main conveying pipe and the buffer inner layer.

[0010] In some embodiments, the number of the connecting ribs is not less than one, and the connecting ribs extend along the length direction of the main conveying pipe, and a buffer inner layer is filled between two adjacent connecting ribs.

[0011] In some embodiments, the connecting ribs are spirally arranged on the inner wall of the main conveying pipe.

[0012] In some embodiments, fixed flanges are provided on both sides of the main conveying pipe, and both ends of the buffer inner layer extend to correspond to the flanges.

[0013] In some embodiments, the corrugated belt is in a strip-shaped structure, which is an arc-shaped structure along the radial section of the main conveying pipe and is compatible with the main conveying pipe and the shock-absorbing convex ring. Multiple corrugated belts are detachably connected to the outside of the main conveying pipe through the strap.

[0014] In some embodiments, the strap is in a flexible strip-shaped structure, the strap matches the inner concave portion of the outer wall of the corrugated belt, both movable ends of the strap are provided with connecting ears, and a connecting bolt is detachably connected between the two connecting ears.

[0015] The beneficial effects are:

[0016] The buffer inner layer of the inner wall of the main delivery pipe can buffer the gas, reduce the impact force of the gas on the inner wall of the main delivery pipe, avoid the contact between the gas and the inner wall of the main delivery pipe, and avoid the corrosion of the main delivery pipe by a small amount of chemical substances such as hydrogen sulfide in the gas;

[0017] When the pipeline is buried underground, it can reduce the impact of external soil on the main transmission pipe, and cooperate with the corrugated belt to form a water vapor barrier for the main transmission pipe, thereby improving the shock absorption and anti-corrosion effect of the gas pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 It is a right view of the corrugated belt in the utility model.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Main conveying pipe; 101. Flange; 2. Connecting ribs; 3. Buffer inner layer; 4. Shock-absorbing convex ring; 5. Corrugated belt; 6. Cable tie; 601. Connecting ear; 602. Connecting bolt. DETAILED DESCRIPTION

[0024] 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.

[0025] First embodiment:

[0026] See also Figure 1-Figure 3 As shown, the utility model provides a gas pipeline with anti-corrosion function, including a main delivery pipe 1, the inner wall of the main delivery pipe 1 is provided with a buffer inner layer 3, the buffer inner layer 3 is a rubber layer, the outer wall of the main delivery pipe 1 is provided with a plurality of shock-absorbing convex rings 4, and the shock-absorbing convex rings 4 are evenly distributed along the length direction of the main delivery pipe 1; it also includes a corrugated belt 5, the corrugated belt 5 is detachably arranged on the outside of the shock-absorbing convex ring 4, the corrugated belt 5 extends along the length direction of the main delivery pipe 1, and has a continuous concave-convex structure along the axial section of the main delivery pipe 1, the corrugated belt 5 is in clearance fit with the shock-absorbing convex ring 4 toward the side wall of the main delivery pipe 1, and when the device is used, the buffer inner layer 3 of the inner wall of the main delivery pipe 1 can be used to stabilize the main delivery pipe 1 during gas transportation, Gas is buffered to reduce the impact force of the gas on the inner wall of the main delivery pipe 1, and the contact between the gas and the inner wall of the main delivery pipe 1 is avoided, and the corrosion of the main delivery pipe 1 by a small amount of chemical substances such as hydrogen sulfide in the gas is avoided. A plurality of shock-absorbing convex rings 4 are arranged on the outer wall of the main delivery pipe 1. Especially for the pre-buried pipeline, due to the vibration generated when the main delivery pipe 1 transports the gas, the outer wall of the main delivery pipe 1 will also have an impact with the external soil. The shock-absorbing convex ring 4 can reduce the impact of the external soil on the main delivery pipe 1, and can protect the outer wall of the main delivery pipe 1. Furthermore, the corrugated belt 5 can be used to block water vapor on the main delivery pipe 1, thereby improving the shock absorption and anti-corrosion effect of the gas pipeline.

[0027] The second embodiment is different from the first embodiment in that:

[0028] The inner wall of the main conveying pipe 1 is shot peened to increase the friction coefficient of the inner wall of the main conveying pipe 1, so that the connection between the buffer inner layer 3 and the main conveying pipe 1 is tighter and more reliable. Furthermore, a connecting rib 2 is arranged between the main conveying pipe 1 and the buffer inner layer 3. The connecting rib 2 is a strip structure. The number of connecting ribs 2 is not less than one, and they extend along the length direction of the main conveying pipe 1. The connecting rib 2 is fixedly installed on the inner wall of the main conveying pipe 1 by welding, and is welded to the connecting rib 2. The buffer inner layer 3 is filled between two adjacent connecting ribs 2. The buffer inner layer 3 can be used to reduce shock during gas transportation, and can also avoid direct contact between the gas and the main conveying pipe 1, avoid corrosion of the main conveying pipe 1 by a small amount of chemical substances such as hydrogen sulfide in the gas, and make the main conveying pipe 1 more stable during pipeline transportation.

[0029] In addition, the connecting ribs 2 are spirally arranged on the inner wall of the main conveying pipe 1 , so that the spirally arranged connecting ribs 2 form a supporting skeleton on the inner wall of the main conveying pipe 1 , thereby improving the supporting strength of the main conveying pipe 1 .

[0030] The third embodiment is different from the first embodiment in that:

[0031] Fixed flanges 101 are provided on both sides of the main conveying pipe 1, and the flanges 101 are welded to the main conveying pipe 1. Both ends of the buffer inner layer 3 extend to correspond to the flanges 101. In this way, when the two main conveying pipes 1 are connected, they can be directly connected through the contact of the flanges 101. No elastic gasket needs to be added between the two flanges 101. The two flanges 101 can be connected directly by bolts, which is simpler to operate and has a better effect.

[0032] The corrugated belt 5 is a strip-shaped structure, and its radial cross section along the main conveying pipe 1 is an arc surface structure, and is adapted to the main conveying pipe 1 and the shock-absorbing convex ring 4. The corrugated belt 5 is distributed on the outer wall of the main conveying pipe 1 around the axis of the main conveying pipe 1, and is detachably connected to the outer side of the main conveying pipe 1 through the strap 6. The corrugated belt 5 can be used to limit the outer edge position of the main conveying pipe 1 and the shock-absorbing convex ring 4, and can assist in fixing the shock-absorbing convex ring 4. The corrugated belt 5 can be used to isolate the main conveying pipe 1 from water vapor. When fixing, the strap 6 can be used to Multiple corrugated belts 5 are installed or disassembled. In the structure of the belt 6, the belt 6 is a flexible strip-shaped structure. The belt 6 matches the concave portion of the outer wall of the corrugated belt 5. Both movable ends of the belt 6 are provided with connecting ears 601. A connecting bolt 602 is detachably connected between the two connecting ears 601. When fixing the corrugated belt 5, the belt 6 is wrapped around the outer side of the early corrugated belt 5, and the connecting bolts 602 are installed on the two connecting ears 601 so that the two connecting ears 601 are close to each other, and the corrugated belt 5 is clamped and fixed by the belt 6.

[0033] 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 gas pipeline with anti-corrosion function, comprising a main delivery pipe (1), characterized in that: The inner wall of the main conveying pipe (1) is provided with a buffer inner layer (3), and the outer wall of the main conveying pipe (1) is provided with a plurality of shock-absorbing convex rings (4), and the shock-absorbing convex rings (4) are evenly distributed along the length direction of the main conveying pipe (1); and further comprises a corrugated belt (5), the corrugated belt (5) being detachably arranged on the outer side of the shock-absorbing convex ring (4), the corrugated belt (5) extending along the length direction of the main conveying pipe (1), and presenting a continuous concave-convex structure along the axial section of the main conveying pipe (1), and the corrugated belt (5) is clearance-matched with the shock-absorbing convex ring (4) toward the side wall of the main conveying pipe (1).

2. The gas pipeline with anti-corrosion function according to claim 1, characterized in that: The inner wall of the main conveying pipe (1) is shot peened.

3. The gas pipeline with anti-corrosion function according to claim 1, characterized in that: A connecting rib (2) is provided between the main conveying pipe (1) and the buffer inner layer (3).

4. The gas pipeline with anti-corrosion function according to claim 3 is characterized in that: The number of the connecting ribs (2) is not less than one, and they extend along the length direction of the main conveying pipe (1), and a buffer inner layer (3) is filled between two adjacent connecting ribs (2).

5. The gas pipeline with anti-corrosion function according to claim 3 is characterized in that: The connecting ribs (2) are arranged in a spiral shape on the inner wall of the main conveying pipe (1).

6. The gas pipeline with anti-corrosion function according to claim 1, characterized in that: Fixed flanges (101) are provided on both sides of the main conveying pipe (1), and both ends of the buffer inner layer (3) extend to correspond to the flanges (101).

7. The gas pipeline with anti-corrosion function according to claim 1, characterized in that: The corrugated belt (5) is in a strip-shaped structure, and has an arc surface structure along the radial section of the main conveying pipe (1), and is compatible with the main conveying pipe (1) and the shock-absorbing convex ring (4). A plurality of the corrugated belts (5) are detachably connected to the outside of the main conveying pipe (1) via a strap (6).

8. The gas pipeline with anti-corrosion function according to claim 7, characterized in that: The strap (6) is in the form of a flexible strip, and the strap (6) matches the inner recess of the outer wall of the corrugated belt (5). Both movable ends of the strap (6) are provided with connecting ears (601), and a connecting bolt (602) is detachably connected between the two connecting ears (601).

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