Natural gas anti-corrosion leakage-proof glass fiber conveying pipeline

Abstract

The utility model relates to the technical field of natural gas pipelines, in particular to a natural gas anti-corrosion leakage-proof glass fiber conveying pipeline. The natural gas anti-corrosion leakage-proof glass fiber conveying pipeline comprises a lining pipe, the lining pipe is sleeved with a protective sleeve, the two ends of the lining pipe are fixedly sleeved with steel sleeves, and the two ends of the protective sleeve are fixedly connected with the inner plate faces of the two steel sleeves on the lining pipe respectively; a heat preservation cavity is reserved between the lining pipe and the protective casing pipe, an elastic rubber ball is fixedly embedded in the heat preservation cavity, a semiconductor sensor is embedded in the protective casing pipe, and a detection probe on the semiconductor sensor is inserted into the heat preservation cavity. According to the natural gas anti-corrosion leakage-proof glass fiber conveying pipeline, when leakage occurs in the lining pipe, leaked natural gas can flow into the heat preservation cavity, so that the semiconductor type sensor can conduct detection rapidly, and due to the fact that the voice alarm gives an alarm, workers can conduct overhaul and maintenance in time conveniently, and the working efficiency is improved. And harm caused by leakage of the natural gas pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, in particular to a natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline. Background Art

[0002] Natural gas is a clean energy source, but also a flammable and explosive dangerous medium. It is usually transported by pipeline. Pipeline transportation has the characteristics of large transportation volume, continuous, rapid, economical, safe and reliable. Glass fiber composite materials are widely used in the repair and construction of natural gas pipelines due to their high strength, pressure resistance and corrosion resistance. This material can maintain stable performance under different environmental conditions, especially in groundwater media. Glass fiber composite repair technology does not require open flames, which reduces construction risks. It can be operated under pressure without affecting the normal operation of the pipeline. The construction process is simple and the cycle is short. However, during the long-term use of pipelines, due to the effects of formation pressure, corrosion, fatigue, external mechanical damage, etc., pipeline cracking, leakage and other accidents occur. Due to the long pipeline wiring, it is sometimes difficult for staff to find them in time, which is easy to induce safety accidents.

[0003] Therefore, it is necessary to provide a new natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a natural gas corrosion-resistant and leak-proof glass fiber conveying pipeline.

[0005] The utility model provides a natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline comprising an inner liner, a sheath pipe is sleeved on the inner liner, and both ends of the inner liner are fixedly sleeved with steel sleeves, and the two ends of the sheath pipe are respectively fixedly connected to the inner plate surfaces of the two steel sleeves on the inner liner;

[0006] A heat preservation cavity is reserved between the inner lining tube and the sheath tube, and a plurality of uniformly distributed elastic rubber balls are fixedly embedded in the heat preservation cavity. A semiconductor sensor is fixedly embedded on the sheath tube, and a detection probe on the semiconductor sensor is inserted into the heat preservation cavity.

[0007] A pressure-proof component is arranged between the jacket pipe and the steel jacket, and the connection between the jacket pipe and the steel jacket is protected by the pressure-proof component.

[0008] Preferably, the anti-pressure components are provided in two groups, and the two groups of the anti-pressure components are respectively arranged at the two ends of the sheath pipe, the anti-pressure components include a sleeve A ring and a sleeve B ring, the sleeve A ring is fixedly sleeved in an annular A groove opened in the sheath pipe, the sleeve B ring is fixedly sleeved in an annular B groove opened in the steel sleeve, and a plurality of annularly distributed curved steel bars are fixedly welded between the sleeve A ring and the sleeve B ring.

[0009] Preferably, a voice alarm is also installed on the semiconductor sensor.

[0010] Preferably, the inner lining pipe comprises a steel pipe base, an inner ring wall of the steel pipe base is fixedly embedded with an epoxy resin layer, and an outer ring wall of the steel pipe base is fixedly sleeved with a glass fiber layer, and a glass wool insulation layer is fixedly sleeved on the glass fiber layer.

[0011] Preferably, the sheath pipe comprises a rubber sleeve layer, a waterproof layer is sleeved on the rubber sleeve layer, and a glass fiber reinforced plastic base layer is fixedly sleeved on the waterproof layer.

[0012] Preferably, the waterproof layer is composited by a layer of semi-conductive non-woven fabric and a highly absorbent resin.

[0013] Preferably, the heat-insulating chamber is arranged between the glass wool heat-insulating layer and the rubber sleeve layer, and the elastic rubber ball is fixedly connected to the glass wool heat-insulating layer and the rubber sleeve layer respectively.

[0014] Compared with the related art, the corrosion-resistant and leak-proof glass fiber pipeline for natural gas provided by the utility model has the following beneficial effects:

[0015] 1. The utility model has a heat preservation cavity between the inner liner and the sheath pipe, which improves the heat insulation effect of the inner liner. At the same time, the elastic rubber ball provides a buffer force between the inner liner and the sheath pipe, so that when the sheath pipe is squeezed, the elastic rubber ball can effectively relieve the pressure on the inner liner. When the inner liner leaks, the leaked natural gas can flow into the heat preservation cavity, so the semiconductor sensor can quickly detect and alarm due to the voice alarm, which is convenient for the staff to carry out timely inspection and maintenance, greatly reducing the harm caused by the leakage of the natural gas pipeline;

[0016] 2. The curved steel bars provided at the connection between the sheath pipe and the steel sheath of the utility model can form a cage-like structure, thereby greatly protecting the connection between the sheath pipe and the steel sheath and avoiding the hidden danger of cracking at the connection between the sheath pipe and the steel sheath due to collision, extrusion and the like at the pipe head of the sheath pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of a natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline provided by the utility model;

[0018] Figure 2 for Figure 1 The cross-sectional structural diagram shown;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the pressure-proof assembly shown;

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of the liner pipe and the jacket pipe shown.

[0021] Numbers in the figure: 1. Inner lining pipe; 101. Steel pipe base layer; 102. Epoxy resin layer; 103. Glass fiber layer; 104. Glass wool insulation layer; 2. Jacket pipe; 201. Rubber casing layer; 202. Waterproof layer; 203. FRP base layer; 2a. Annular A groove; 3. Steel casing; 3a. Annular B groove; 4. Anti-pressure component; 41. Socket A ring; 42. Socket B ring; 43. Curved steel bar; 5. Semiconductor sensor; 6. Voice alarm; 7. Elastic rubber ball; 1-2. Insulation chamber. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 4 The embodiment of the utility model provides a natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline, and the natural gas corrosion-resistant and leak-proof glass fiber delivery pipeline includes an inner liner pipe 1 and a jacket pipe 2.

[0025] In the embodiments of the present utility model, please refer to 1 to Figure 4 A sheath pipe 2 is sleeved on the inner lining pipe 1, and steel sleeves 3 are fixedly sleeved on both ends of the inner lining pipe 1. The two ends of the sheath pipe 2 are respectively fixedly connected to the inner plate surfaces of the two steel sleeves 3 on the inner lining pipe 1. By sleeved the steel sleeve 3 on the inner lining pipe 1, the strength of the pipe head of the inner lining pipe 1 is effectively protected, and the connecting end of the sheath pipe 2 can also be protected, avoiding the hidden danger of the pipe head of the sheath pipe 2 being damaged due to pressing.

[0026] Furthermore, the inner liner pipe 1 includes a steel pipe base 101, the inner ring wall of the steel pipe base 101 is fixedly embedded with an epoxy resin layer 102, and the outer ring wall of the steel pipe base 101 is fixedly sleeved with a glass fiber layer 103, and the glass fiber layer 103 is fixedly sleeved with a glass wool insulation layer 104. The epoxy resin layer 102 has excellent wear resistance, corrosion resistance and adhesion, which greatly improves the corrosion resistance of the inner liner pipe 1, and the glass fiber layer 103 can effectively enhance the pressure resistance of the natural gas pipeline. When the internal pressure of the pipeline increases, the glass fiber layer 103 can provide better support and reduce the risk of pipeline rupture or even explosion. The glass fiber layer 103 can fit tightly on the outer wall of the natural gas pipeline, fill the gaps in the pipeline, and effectively prevent gas leakage. This sealing performance can not only avoid the waste of natural gas resources, but also prevent safety hazards such as fire and explosion caused by leakage; and the glass wool insulation layer 104 effectively reduces the heat loss of the natural gas pipeline.

[0027] Furthermore, the sheath pipe 2 includes a rubber casing layer 201, on which a waterproof layer 202 is sleeved, and the waterproof layer 202 is composited by a layer of semi-conductive non-woven fabric and a highly absorbent resin, and the provision of the waterproof layer 202 greatly improves the waterproof effect of the natural gas pipeline, and a glass fiber reinforced plastic base layer 203 is fixedly sleeved on the waterproof layer 202, and the main function of the glass fiber reinforced plastic base layer 203 is to prevent the natural gas pipeline from being corroded by external environments such as soil and moisture, thereby extending the service life of the natural gas pipeline.

[0028] In the embodiments of the present utility model, please refer to 1 to Figure 4 A heat preservation cavity 1-2 is reserved between the inner lining tube 1 and the sheath tube 2, and the heat preservation cavity 1-2 is arranged between the glass wool heat preservation layer 104 and the rubber casing layer 201. A plurality of elastic rubber balls 7 evenly distributed are fixedly embedded in the heat preservation cavity 1-2, and the elastic rubber balls 7 are respectively fixedly connected to the glass wool heat preservation layer 104 and the rubber casing layer 201. A semiconductor sensor 5 is fixedly embedded on the sheath tube 2, and the detection probe on the semiconductor sensor 5 is inserted into the heat preservation cavity 1-2, and a voice alarm 6 is also installed on the semiconductor sensor 5.

[0029] It should be noted that: a heat preservation cavity 1-2 is reserved between the inner liner pipe 1 and the jacket pipe 2, which improves the heat insulation effect of the inner liner pipe 1 on the one hand, and the additional elastic rubber ball 7 provides a buffer force between the inner liner pipe 1 and the jacket pipe 2, so that when the jacket pipe 2 is squeezed, the elastic rubber ball 7 can effectively relieve the pressure on the inner liner pipe 1;

[0030] When the inner liner pipe 1 leaks, the leaked natural gas can flow into the insulation chamber 1-2, so the semiconductor sensor 5 can quickly detect and the voice alarm 6 can sound an alarm, making it convenient for the staff to carry out timely inspection and maintenance, greatly reducing the harm caused by the leakage of the natural gas pipeline. At the same time, the outer circle of the insulation chamber 1-2 is covered with a sheath pipe 2, thereby eliminating the hidden danger of direct discharge into the surrounding environment after the inner liner pipe 1 leaks.

[0031] In the embodiments of the present invention, please refer to Figure 1 and Figure 4 An anti-pressure component 4 is installed between the sheath pipe 2 and the steel sheath 3 to protect the connection between the sheath pipe 2 and the steel sheath 3. Two groups of anti-pressure components 4 are provided, and the two groups of anti-pressure components 4 are arranged at both ends of the sheath pipe 2. The anti-pressure component 4 includes a sleeve A ring 41 and a sleeve B ring 42. The sleeve A ring 41 is fixedly sleeved in the annular A groove 2a opened in the sheath pipe 2, and the sleeve B ring 42 is fixedly sleeved in the annular B groove 3a opened in the steel sheath 3. A plurality of annularly distributed curved steel bars 43 are fixedly welded between the sleeve A ring 41 and the sleeve B ring 42.

[0032] It should be noted that the curved steel bars 43 provided at the connection between the sheath pipe 2 and the steel sheath 3 can form a cage-like structure, thereby greatly protecting the connection between the sheath pipe 2 and the steel sheath 3 and avoiding the hidden danger of cracking at the connection between the sheath pipe 2 and the steel sheath 3 due to collision, extrusion, etc. at the pipe head of the sheath pipe 2.

[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A natural gas corrosion-resistant and leak-proof glass fiber pipeline, characterized in that: It comprises an inner liner pipe (1), a protective sleeve pipe (2) is sleeved on the inner liner pipe (1), and steel sleeves (3) are fixedly sleeved on both ends of the inner liner pipe (1), and the two ends of the protective sleeve pipe (2) are respectively fixedly connected to the inner plate surfaces of the two steel sleeves (3) on the inner liner pipe (1); A heat preservation cavity (1-2) is provided between the inner lining tube (1) and the sheath tube (2), and a plurality of evenly distributed elastic rubber balls (7) are fixedly embedded in the heat preservation cavity (1-2); a semiconductor sensor (5) is fixedly embedded on the sheath tube (2), and a detection probe on the semiconductor sensor (5) is inserted into the heat preservation cavity (1-2); An anti-pressure component (4) is arranged between the jacket pipe (2) and the steel jacket (3), and the connection between the jacket pipe (2) and the steel jacket (3) is protected by the anti-pressure component (4).

2. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 1 is characterized in that: The pressure-proof components (4) are provided in two groups, and the two groups of the pressure-proof components (4) are respectively arranged at two ends of the sheath tube (2). The pressure-proof components (4) include a sleeve A ring (41) and a sleeve B ring (42). The sleeve A ring (41) is fixedly sleeved in an annular A groove (2a) provided in the sheath tube (2), and the sleeve B ring (42) is fixedly sleeved in an annular B groove (3a) provided in the steel sleeve (3). A plurality of annularly distributed curved steel bars (43) are fixedly welded between the sleeve A ring (41) and the sleeve B ring (42).

3. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 1 is characterized in that: A voice alarm (6) is also installed on the semiconductor sensor (5).

4. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 1 is characterized in that: The inner lining pipe (1) comprises a steel pipe base (101), an inner ring wall of the steel pipe base (101) having an epoxy resin layer (102) fixedly embedded therein, and an outer ring wall of the steel pipe base (101) having a glass fiber layer (103) fixedly sleeved thereon, and a glass wool insulation layer (104) fixedly sleeved thereon on the glass fiber layer (103).

5. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 4 is characterized in that: The protective casing pipe (2) comprises a rubber casing layer (201), a waterproof layer (202) is sleeved on the rubber casing layer (201), and a glass fiber reinforced plastic base layer (203) is fixedly sleeved on the waterproof layer (202).

6. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 5 is characterized in that: The waterproof layer (202) is formed by compounding a layer of semi-conductive non-woven fabric and a highly water-absorbent resin.

7. The corrosion-resistant and leak-proof glass fiber pipeline for natural gas transportation according to claim 5 is characterized in that: The heat-insulating chamber (1-2) is arranged between the glass wool heat-insulating layer (104) and the rubber sleeve layer (201), and the elastic rubber ball (7) is fixedly connected to the glass wool heat-insulating layer (104) and the rubber sleeve layer (201), respectively.

Images