Protective structure of underground gas pipeline

Abstract

The utility model discloses a protective structure of an underground gas pipeline, which relates to the technical field of gas delivery, aims to solve the problem that the underground gas pipeline deforms due to displacement caused by running water scouring, and adopts the technical scheme that a sleeve is sleeved on the peripheral wall of a pipeline body, and a fixed seat is arranged on the bottom surface of the sleeve; a plurality of supporting structures are arranged on the outer wall of the sleeve and the outer wall of the fixing base and covered with an arc-shaped plate and an inclined plate, a plurality of protruding strips are fixed to the arc-shaped plate, a plurality of through grooves are formed in the inclined plate, the inclined plate is fixedly connected with the arc-shaped plate, and the other end of the arc-shaped plate and the other end of the inclined plate are fixedly connected with the base. A plurality of cavities are formed among the supporting structure, the sleeve, the inclined plate and the arc plate, the cavities are filled with elastic pieces, the purpose of buffering pressure of water flow and soil on the surface of the structure is achieved by increasing water flow flowing paths and additionally arranging the elastic pieces, and therefore the possibility that a pipeline body deforms and displaces under the action of external pressure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transmission, and more specifically, it relates to a protection structure for underground gas pipelines. Background Art

[0002] When underground gas pipelines cross roads or rivers, there are generally laying methods different from ordinary underground pipelines. The crossing project is divided into three types: pipe jacking, directional drilling, and open excavation. The pipe jacking method refers to an underground excavation construction method used when tunnels or underground pipelines cross various obstacles such as railways, roads, rivers, or buildings. The directional drilling method is used to cross rivers. Pipelines are laid in a directional drilling manner at a distance of 7 - 20 meters from the bottom of the riverbed. This method will not cause damage to the riverbed and river embankment. The open excavation method is generally used for small rivers where the geological conditions are not suitable for pipe jacking and directional drilling. The river is intercepted, a diversion channel is opened, and after the pipeline is laid, earthwork backfilling is carried out, and the cofferdam is gradually removed to restore the normal flow of the river.

[0003] When using the open excavation method to lay gas pipelines under the riverbed, due to limited geological conditions, gas pipelines generally do not go deep into the bottom of the riverbed and are very close to the riverbed. Therefore, the flowing water scouring of the river will have a certain force on the gas pipeline, which may cause the pipeline to displace, thus affecting the normal operation of the pipeline.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a protection structure for underground gas pipelines, aiming to solve the problem that the underground gas pipelines are displaced due to the scouring of flowing water and deformed.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A protection structure for underground gas pipelines includes a pipeline body. A sleeve is sleeved on the outer peripheral wall of the pipeline body. A fixed seat is arranged on the bottom surface of the sleeve. A number of support structures are arranged on the outer walls of the sleeve and the fixed seat. An arc-shaped plate is arranged at one end of the support structure away from the sleeve. A number of convex strips are fixed on the arc-shaped plate. A slope plate is simultaneously arranged at the end of the support structure away from the sleeve. A number of through grooves are arranged on the slope plate. One end of the slope plate is fixedly connected to one end of the arc-shaped plate. The other ends of the arc-shaped plate and the slope plate are respectively fixedly connected to the fixed seat. A number of cavities are formed between the support structure and the sleeve, the slope plate, and the arc-shaped plate. Elastic members are filled in the cavities.

[0007] The utility model is further arranged as follows: The support structure is arranged around the sleeve and the fixed seat, and the cross-section of the support structure is triangular.

[0008] The present utility model is further configured such that: the through groove on the inclined plate is wavy, and the through groove penetrates through the opposite end faces of the inclined plate.

[0009] The present utility model is further configured such that: the cross-section of the convex strip is arc-shaped.

[0010] The present utility model is further configured such that: a protective layer is provided between the pipe body and the casing. The protective layer includes a moisture-proof layer, a buffer layer, and a protective steel frame in sequence from the pipe body to the casing. The moisture-proof layer is sleeved on the outer peripheral wall of the pipe body, and the buffer layer and the protective steel frame are sleeved in sequence.

[0011] The present utility model is further configured such that: the elastic member is made of rubber, and the support structure is made of steel.

[0012] In summary, the present utility model has the following beneficial effects: The gas pipeline is laid underground across the riverbed of the river, with the direction of the water flow facing the direction of the arc plate, driving the soil under the riverbed to displace and exert pressure towards the arc plate. Convex strips are installed on the arc plate to reduce the impact by increasing the flow path of the water. The shed-like design of the arc plate has strong compressive capacity and can withstand the impact of flowing water and soil. The inclined plate can buffer the pressure brought by the water flow and soil. At the same time, the inclined surface and the through groove also play a role in guiding and buffering the water flow by increasing the flow path of the water. Elastic members are filled between the arc plate, the inclined plate, the casing, and the base, which can further buffer the acting force of the water flow and soil erosion, so as to solve the problem of displacement caused by the erosion of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0014] Figure 2 is a schematic structure diagram of the inclined plate;

[0015] Figure 3 is a schematic structure of the present utility model Figure 1 ;

[0016] Figure 4 is a schematic structure of the present utility model Figure 2 。

[0017] In the figure: 1, pipe body; 2, casing; 3, fixed seat; 4, support structure; 5, arc plate; 6, convex strip; 7, inclined plate; 8, through groove; 9, cavity; 11, moisture-proof layer; 12, buffer layer; 13, protective steel frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0019] The protective structure of the underground gas pipeline, such as Figure 1 - Figure 2 shown, includes a pipeline body 1. A casing 2 is sleeved on the outer peripheral wall of the pipeline body 1. A fixing seat 3 is arranged on the bottom surface of the casing 2. A number of support structures 4 are arranged on the outer walls of the casing 2 and the fixing seat 3. An arc-shaped plate 5 is arranged outside one end of some of the support structures 4 away from the casing 2 or the fixing seat 3. A number of convex strips 6 are fixed on the arc-shaped plate 5. A sloping plate 7 is arranged outside one end of some of the support structures 4 away from the casing 2 or the fixing seat 3. A number of through grooves 8 are arranged on the sloping plate 7. One end of the sloping plate 7 and one end of the arc-shaped plate 5 are fixedly connected. The other ends of the arc-shaped plate 5 and the sloping plate 7 are respectively fixedly connected to the base. A number of cavities 9 are formed between the support structure 4 and the casing 2, the sloping plate 7 and the arc-shaped plate. Elastic members are filled in the cavities 9. The gas pipeline is laid underground across the riverbed. The arrangement of the base and the casing 2 gives the pipeline body 1 a certain strength and compressive capacity. The direction of the water flow faces the direction of the arc-shaped plate, driving the soil under the riverbed to displace and exert pressure towards the arc-shaped plate. The convex strips 6 are installed on the arc-shaped plate. By increasing the flow path of the water, the impact is reduced. The shed-like design of the arc-shaped plate has a relatively strong compressive capacity and can withstand the impact of flowing water and soil. The setting of the sloping plate 7 can buffer the pressure brought by the water flow and soil. At this time, the pressure borne by the sloping plate 7 is not as large as the pressure borne by the arc-shaped plate 5. The sloping plate 7 has good drainage performance, and the through grooves 8 can drain water. By increasing the flow path of the water, the functions of drainage and buffering are achieved. Elastic members are filled between the arc-shaped plate, the sloping plate 7 and the casing 2 and the base, which can further buffer the acting force of the water flow and soil erosion, so as to solve the problem of displacement caused by the erosion of flowing water.

[0020] As Figure 1 - Figure 2 shown, the material of the support structure 4 is set as steel. Steel has high compressive, bending and tensile strengths, can bear a large amount of loads and maintain the stability of the structure. The support structure 4 surrounds the casing 2 and the base, and the other end is fixedly connected to the arc-shaped plate 5 or the sloping plate 7. Its cross-section is triangular. The triangle has good stability, which can improve the structural stability of the present utility model. The cross-section shape of the through grooves 8 arranged on the sloping plate 7 is in a curved shape. The through grooves 8 penetrate through the two opposite end faces of the inclined plane. The muddy water slides down along the inclined plane after passing through the arc-shaped plate 5, or the muddy water flowing from top to bottom flows through the inclined plane. The through grooves 8 play a role in collecting and draining. The function of the curved through grooves 8 can further increase the flowing distance of the muddy water, and is also beneficial to the smooth sliding of the water flow and soil. The surface of the arc-shaped plate 5 is provided with arc-shaped convex strips 6. The arc-shaped convex strips 6 increase the surface structural strength of the arc-shaped plate 5, and can increase the flowing distance of the flowing water while not hindering its fluidity, facilitating the smooth sliding of the flowing water and sediment, and not blocking on the surface of the arc-shaped plate 5 to increase its pressure.

[0021] As Figure 1 - Figure 4As shown, a multi-layer structure is provided between the pipe body 1 and the casing 2. A moisture-proof layer 11 is provided on the outer peripheral wall of the pipe body 1. The moisture-proof layer 11 includes foamed polyethylene and a PE insulation pipe. The PE insulation pipe is sleeved on the outer peripheral wall of the pipe body 1. The PE insulation pipe has good moisture-proof and sealing properties, and its material is light. Foamed polyethylene is filled between the PE insulation pipe and the pipe body 1. Due to its special closed-cell structure, foamed polyethylene is not easy to absorb water and has excellent moisture-proof performance. At the same time, it has relatively high strength and can withstand a certain amount of pressure without being easily deformed. A buffer layer 12 is provided outside the moisture-proof layer 11. The material of the buffer layer 12 is set as rubber, and the material of the elastic member is also set as rubber. Rubber has high elasticity and buffering performance. A protective steel frame 13 is provided outside the buffer layer 12. The protective steel frame 13 is in contact with the inner wall of the casing 2, which can enable the pipe body 1 and the casing 2 to have a certain compressive capacity and stability, ensuring that the pipe body 1 will not be affected when the casing 2 is deformed.

[0022] Working principle: The material of the casing 2 can be changed according to different actual situations. The materials of the arc-shaped plate 5 and the inclined plate 7 are set as titanium alloy. Titanium alloy has good compressive capacity, corrosion resistance and moisture-proof performance, and is widely used in ocean engineering. The fixed seats 3 are all made of reinforced cement. The sealing between the arc-shaped plate 5, the inclined plate 7 and the fixed seats 3 adopts a variety of combinations of glue and rubber rings to ensure its sealing performance. The arc-shaped plate 5 needs to be arranged facing the direction of the water flow. When the water flow carrying sediment impacts the protection structure, the impact force brought by the water flow direction and the gravity squeezing the protection structure from top to bottom of the riverbed. Part of the water flow and sediment are decomposed by the convex strips 6 on the arc-shaped plate 5, and the pressure on the surface of the arc-shaped plate 5 is reduced. Part of it passes through the inclined plate 7 and the through grooves 8 on its surface, and the acting force brought is buffered. There is also part of the water flow and sediment squeezing the protection structure, and the acting force is buffered and released by the elastic member. The force acting on the pipe body 1 is greatly reduced through this, thereby reducing the possibility of its displacement or deformation and prolonging the service life of the pipe body 1.

[0023] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A protective structure for an underground gas pipeline, comprising a pipeline body (1), characterized in that: A sleeve (2) is sleeved on the outer peripheral wall of the pipe body (1), a fixing seat (3) is provided on the bottom surface of the sleeve (2), a plurality of supporting structures (4) are provided on the outer walls of the sleeve (2) and the fixing seat (3), an arc-shaped plate (5) is provided at one end of the supporting structure (4) away from the sleeve (2), a plurality of convex strips (6) are fixed on the arc-shaped plate (5), an inclined plate (7) is provided at the outer side of the end of the supporting structure (4) away from the sleeve (2), a plurality of through grooves (8) are provided on the inclined plate (7), one end of the inclined plate (7) is fixedly connected to one end of the arc-shaped plate (5), and the other ends of the arc-shaped plate (5) and the inclined plate (7) are respectively fixedly connected to the fixing seat (3), and a plurality of cavities (9) are formed between the supporting structure (4), the sleeve (2), the inclined plate (7) and the circular arc plate, and the cavities (9) are filled with elastic members.

2. The protective structure for underground gas pipeline according to claim 1, characterized in that: The support structure (4) is arranged around the sleeve (2) and the fixing seat (3), and the cross section of the support structure (4) is triangular.

3. The protective structure for underground gas pipeline according to claim 2, characterized in that: The through groove (8) on the inclined plate (7) is wavy in shape, and the through groove (8) passes through two opposite end surfaces of the inclined plate (7).

4. The protective structure for underground gas pipeline according to claim 3 is characterized in that: The cross section of the convex strip (6) is arranged to be in an arc shape.

5. The protective structure for underground gas pipeline according to claim 4, characterized in that: A protective layer is provided between the pipeline body (1) and the sleeve (2), and the protective layer comprises a moisture-proof layer (11), a buffer layer (12) and a protective steel frame (13) in sequence from the pipeline body (1) to the sleeve (2); the moisture-proof layer (11) is sleeved on the outer peripheral wall of the pipeline body (1), and the buffer layer (12) and the protective steel frame (13) are sleeved in sequence.

6. The protective structure for underground gas pipeline according to claim 5, characterized in that: The material of the elastic member is set to rubber, and the material of the supporting structure (4) is set to steel.

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