A gas pipeline designed to prevent low-temperature condensation

Abstract

This utility model discloses a gas pipeline for preventing low-temperature condensation, specifically relating to the field of gas pipeline technology. It includes a protective bend and an inner gas pipe located inside the protective bend. The protective bend has an anti-corrosion coating on its exterior, a first heat insulation layer on its inner wall, and a second heat insulation layer on the outer surface of the inner gas pipe. A filler layer is provided between the inner gas pipe and the protective bend. This utility model firstly protects the exterior of the protective bend with the anti-corrosion coating, providing corrosion protection. Secondly, the first and second heat insulation layers insulate the inner wall of the protective bend from the outer surface of the inner gas pipe, providing double insulation. The filler layer further isolates the temperature difference between the protective bend and the inner gas pipe, reducing the heat or cold conduction path and further improving the pipeline's isolation effect, thereby preventing condensation.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline technology, and more specifically, to a gas pipeline that prevents low-temperature condensation. Background Technology

[0002] In gas transmission systems, the normal operation of gas pipelines has a crucial impact on residents' lives and industrial production. However, when gas pipelines are in low-temperature environments, condensation is very likely to occur. As gas flows through the pipeline, its temperature is usually lower than the ambient temperature. When the surface temperature of the pipeline reaches or falls below the dew point temperature, water vapor in the air will condense into water droplets on the pipeline surface. The water droplets produced by condensation will continuously corrode the outer wall of the pipeline, resulting in thinner pipe walls, reduced strength, shortened pipeline service life, and increased pipeline maintenance and replacement costs. Furthermore, the water droplets produced by condensation may cause electrical faults such as short circuits, or even serious safety accidents such as fires and explosions, threatening people's lives and property.

[0003] Common methods to prevent condensation on gas pipelines at low temperatures include insulation and heating. Traditional insulation measures, such as wrapping the pipeline with ordinary insulation cotton, have limited insulation effects and are difficult to effectively prevent condensation in environments with large temperature fluctuations. As for heating, although it can increase the pipeline temperature to a certain extent and reduce condensation, it has the problems of high energy consumption and high cost. Moreover, the installation and maintenance of heating devices are complex and require professional operation. In some remote areas or complex terrain environments, it is difficult to implement. Therefore, a method to prevent condensation on gas pipelines at low temperatures is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a gas pipeline that prevents low-temperature condensation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline for preventing low-temperature condensation, comprising a protective bend and an inner gas pipe located inside the protective bend. The protective bend is externally coated with an anti-corrosion coating, which protects the exterior of the protective bend. Epoxy resin has excellent anti-corrosion properties, effectively resisting the erosion of the protective bend by external acids, alkalis, and humid air, thus extending its service life. The inner wall of the protective bend is provided with a first heat insulation layer. Aerogel felt has extremely low thermal conductivity, significantly reducing the transfer of heat from the external environment into the protective bend. The heat transfer between the inner wall of the protective bend and the outside environment is reduced, the surface temperature of the inner wall is lowered, and heat insulation protection is provided for the gas inner pipe from the outside, reducing the possibility of condensation. The outer surface of the gas inner pipe is provided with a second heat insulation layer. The second heat insulation layer works with the first heat insulation layer to form a double heat insulation barrier, further reducing the heat exchange between the gas inner pipe and the external environment, lowering the surface temperature of the gas inner pipe, and preventing condensation on the outer wall of the gas inner pipe. A filler layer is provided between the gas inner pipe and the protective bend. The filler layer can effectively fill the gap between the two, reduce the heat conduction path, and further improve the heat insulation effect of the pipeline. The bottom end of the protective bend is equipped with a sealing head, and the bottom of the sealing head has a connecting groove. This groove facilitates connection with other pipe components, making assembly and use convenient. Multiple fixing rings are fitted around the outside of the inner gas pipe. Fixing lugs are fixedly connected to both ends of each fixing ring, and a fastening bolt is inserted into the middle of each lug. Elastic plates are fixedly connected around the fixing rings, with ball bearings embedded at one end. Tightening the nuts securely fixes the fixing rings to the protective bend, thus stably supporting the inner gas pipe and preventing displacement or shaking within the bend, ensuring the stability of the gas pipeline structure. It also helps to distribute heat evenly inside the pipe, improving the insulation effect. The "V"-shaped elastic plate has good elasticity and buffering performance, which can absorb the impact force generated by gas flow and environmental vibration during pipeline operation, reducing the impact of vibration on the pipeline structure. The ball bearings convert the sliding friction between the elastic plate and the gas inner pipe into rolling friction, greatly reducing the friction force. This allows the gas inner pipe to freely expand and contract and move within a small range when subjected to thermal expansion and contraction or slight external force, avoiding pipeline deformation and damage caused by rigid connection. At the same time, it ensures the relative position stability of the gas inner pipe in the protective bend, improving the adaptability and service life of the pipeline.

[0006] Preferably, the anti-corrosion coating is made of epoxy resin with a thickness of 0.3-0.5 mm. Both the first and second heat insulation layers are made of aerogel felt. The thickness of the first heat insulation layer is 1.5-2.5 cm, and the thickness of the second heat insulation layer is 1-1.5 cm. Epoxy resin has excellent anti-corrosion properties and can effectively resist the erosion of the protective bend by external acid and alkali substances, humid air, etc., thus extending the service life of the protective bend. Aerogel felt has an extremely low thermal conductivity, which can significantly reduce the transfer of heat from the external environment to the inside of the protective bend, reduce the heat exchange between the inner wall of the protective bend and the outside environment, and lower the surface temperature of the inner wall. The second heat insulation layer works in conjunction with the first heat insulation layer to form a double heat insulation barrier, further reducing the heat exchange between the gas inner pipe and the external environment, lowering the surface temperature of the gas inner pipe, and preventing condensation on the outer wall of the gas inner pipe. At the same time, the aerogel felt is soft and will not damage the gas inner pipe.

[0007] Preferably, the filling layer is made of polyurethane foam material, the fixing ring is located in the middle of the filling layer, the sealing head and the protective bend are connected by threads, and a rubber sealing ring is provided at the connection. The polyurethane foam material has good heat insulation, sound insulation and buffering properties, which can effectively fill the gap between the two, reduce the heat conduction path, and further improve the heat insulation effect of the pipeline. The threaded connection facilitates the installation and removal of the sealing head, and makes it convenient to inspect, maintain and clean the inside of the pipeline. The rubber sealing ring can effectively enhance the sealing of the connection, prevent external moisture and air from entering the inside of the protective bend, avoid the risk of condensation caused by moisture intrusion, and prevent gas leakage, thus ensuring safe use.

[0008] Preferably, the fixing ring is tightly fitted to the outer surface of the gas inner pipe, one end of the fastening bolt is fitted with a nut, and the elastic plate is configured with a "V" shaped structure.

[0009] Preferably, one end of the elastic plate is in contact with the inner wall of the protective bend, and the ball bearing is located at the end of the elastic plate away from the protective bend. The ball bearing is in contact with the inner wall of the inner tube. By tightening the nut, the fixing ring can be firmly fixed on the protective bend, thereby stably supporting the gas inner tube and preventing displacement or shaking of the gas inner tube within the protective bend, ensuring the stability of the gas pipeline structure. It also helps to distribute heat evenly within the pipeline and improves the heat insulation effect. The "V"-shaped elastic plate has good elasticity and buffering performance, which can absorb the impact force generated by gas flow and environmental vibration during pipeline operation, reducing the impact of vibration on the pipeline structure. The ball bearing converts the sliding friction between the elastic plate and the gas inner tube into rolling friction, greatly reducing friction. This allows the gas inner tube to freely expand and contract and move within a small range when subjected to thermal expansion and contraction or slight external force, avoiding pipeline deformation and damage caused by rigid connection. At the same time, it ensures the relative position of the gas inner tube within the protective bend is stable, improving the adaptability and service life of the pipeline.

[0010] The technical effects and advantages of this utility model are as follows: 1. This utility model firstly protects the exterior of the protective bend with an anti-corrosion coating, thus preventing corrosion. Secondly, the first and second heat insulation layers isolate the heat or cold from the inner wall of the protective bend and the outer surface of the gas pipe, providing double insulation. The filling layer further isolates the temperature difference between the protective bend and the gas pipe, reducing the heat or cold conduction path and further improving the isolation effect of the pipeline, thereby preventing condensation. 2. This utility model also facilitates the sealing of one end of the gap between the protective bend and the gas inner pipe through the provided sealing head and connecting groove, preventing external moisture and air from entering the interior of the protective bend and avoiding the risk of condensation caused by moisture intrusion. At the same time, it prevents gas leakage and ensures safe use. Furthermore, by installing the fixing ring on the gas inner pipe with fastening bolts, the stability of the protective bend can be improved through the cooperation of the elastic plate and ball bearings when the gas inner pipe and the protective bend are combined. It also allows the gas inner pipe to have a cavity inside the protective bend that can freely expand and contract and move within a small range, avoiding pipe deformation and damage caused by rigid connection. At the same time, it ensures the relative position of the gas inner pipe inside the protective bend is stable, improving the adaptability and service life of the pipeline. In summary, through the interaction of the above-mentioned multiple functions, a multi-layered heat insulation effect can be achieved, thereby isolating the temperature difference between the protective bend and the gas inner pipe, reducing the heat or cold conduction path, further improving the isolation effect of the pipeline, and thus playing a role in preventing condensation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the vertical cross-sectional structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the structure of the fixing ring of this utility model.

[0015] The attached diagram is labeled as follows: 1. Protective bend; 2. Gas inner pipe; 3. Anti-corrosion coating; 4. First insulation layer; 5. Second insulation layer; 6. Sealing head; 7. Connecting groove; 8. Filling layer; 9. Fixing ring; 10. Fixing ear plate; 11. Fastening bolt; 12. Elastic plate; 13. Ball bearing. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] As attached Figure 1-4 The illustrated gas pipeline with anti-low-temperature condensation protection includes a protective bend 1 and an inner gas pipe 2 located inside the protective bend 1. The protective bend 1 is externally coated with an anti-corrosion coating 3, which protects the exterior of the protective bend 1. Epoxy resin has excellent anti-corrosion properties, effectively resisting the erosion of the protective bend 1 by external acids, alkalis, and humid air, thus extending its service life. The inner wall of the protective bend 1 is provided with a first heat insulation layer 4. Aerogel felt has extremely low thermal conductivity, significantly reducing the transfer of heat from the external environment to the interior of the protective bend 1, thus reducing the risk of condensation. The heat exchange between the inner wall and the outside reduces the surface temperature of the inner wall and provides heat insulation protection for the gas inner pipe 2 from the outside, reducing the possibility of condensation. The outer surface of the gas inner pipe 2 is provided with a second heat insulation layer 5. The second heat insulation layer 5 works with the first heat insulation layer 4 to form a double heat insulation barrier, further reducing the heat exchange between the gas inner pipe 2 and the outside environment, reducing the surface temperature of the gas inner pipe 2, and preventing condensation on the outer wall of the gas inner pipe 2. A filling layer 8 is provided between the gas inner pipe 2 and the protective bend 1. The filling layer 8 can effectively fill the gap between the two, reduce the heat conduction path, and further improve the heat insulation effect of the pipeline. The bottom end of the protective bend 1 is equipped with a sealing head 6, and the bottom of the sealing head 6 has a connecting groove 7. The connecting groove 7 facilitates connection with other pipe components, making assembly and use convenient. Multiple fixing rings 9 are fitted around the outside of the gas inner pipe 2. Fixing lugs 10 are fixedly connected to both ends of the fixing rings 9, and fastening bolts 11 are inserted into the middle of the fixing lugs 10. Elastic plates 12 are fixedly connected around the fixing rings 9, and ball bearings 13 are embedded at one end of each elastic plate 12. By tightening the nuts, the fixing rings 9 can be firmly fixed to the protective bend 1, thereby stably supporting the gas inner pipe 2 and preventing displacement or shaking of the gas inner pipe 2 within the protective bend 1, ensuring the stability of the gas pipeline structure. The V-shaped elastic plate 12 has good elasticity and buffering performance, which can absorb the impact force generated by gas flow and environmental vibration during pipeline operation, and reduce the impact of vibration on the pipeline structure. The ball bearing 13 converts the sliding friction between the elastic plate 12 and the gas inner pipe 2 into rolling friction, which greatly reduces the friction force, allowing the gas inner pipe 2 to freely expand and contract and move within a small range when subjected to thermal expansion and contraction or slight external force, avoiding pipeline deformation and damage caused by rigid connection, while ensuring the relative position of the gas inner pipe 2 in the protective bend 1 is stable, improving the adaptability and service life of the pipeline.

[0018] As attached Figure 1-3As shown, the anti-corrosion coating 3 is made of epoxy resin with a thickness of 0.3-0.5mm. The first heat insulation layer 4 and the second heat insulation layer 5 are both made of aerogel felt. The thickness of the first heat insulation layer 4 is 1.5-2.5cm, and the thickness of the second heat insulation layer 5 is 1-1.5cm. The filling layer 8 is made of polyurethane foam. The fixing ring 9 is located in the middle of the filling layer 8. The sealing head 6 is connected to the protective bend 1 by threads, and a rubber sealing ring is provided at the connection. Epoxy resin has excellent anti-corrosion properties and can effectively resist the erosion of the protective bend 1 by external acid and alkali substances, humid air, etc., and extend the service life of the protective bend 1. Aerogel felt has an extremely low thermal conductivity, which can significantly reduce the transfer of heat from the external environment to the interior of the protective bend 1, reduce the heat exchange between the inner wall of the protective bend 1 and the outside environment, and reduce the surface temperature of the inner wall. The second heat insulation layer 5 works in conjunction with the first heat insulation layer 4 to form a double heat insulation barrier, further reducing the heat exchange between the gas inner pipe 2 and the external environment, reducing the surface temperature of the gas inner pipe 2, and preventing condensation on the outer wall of the gas inner pipe 2. Meanwhile, the aerogel felt is soft and will not damage the gas inner pipe 2. The polyurethane foam material has good heat insulation, sound insulation and cushioning properties, which can effectively fill the gap between the two, reduce the heat conduction path, and further improve the heat insulation effect of the pipe. The threaded connection facilitates the installation and removal of the plug head 6, and makes it convenient to inspect, maintain and clean the inside of the pipe. The rubber sealing ring can effectively enhance the sealing of the connection, prevent external moisture and air from entering the interior of the protective bend 1, avoid the risk of condensation caused by moisture intrusion, and prevent gas leakage, ensuring safe use.

[0019] As attached Figure 3 , 4 As shown, the fixing ring 9 is tightly fitted to the outer surface of the gas inner pipe 2. A nut is fitted onto one end of the fastening bolt 11. The elastic plate 12 is configured with a "V" shape, with one end fitting against the inner wall of the protective bend 1. A ball bearing 13 is positioned at the end of the elastic plate 12 away from the protective bend 1, fitting against the inner wall of the inner pipe 2. By tightening the nut, the fixing ring 9 can be firmly fixed to the protective bend 1, thus stably supporting the gas inner pipe 2 and preventing displacement or shaking within the protective bend 1, ensuring the stability of the gas pipeline structure. This also helps to evenly distribute heat within the pipeline. The fabric enhances the insulation effect. The "V"-shaped elastic plate 12 has good elasticity and buffering performance, which can absorb the impact force generated by gas flow and environmental vibration during pipeline operation, reducing the impact of vibration on the pipeline structure. The setting of ball bearings 13 transforms the sliding friction between the elastic plate 12 and the gas inner pipe 2 into rolling friction, greatly reducing the friction force. This allows the gas inner pipe 2 to freely expand and contract and move within a small range when subjected to thermal expansion and contraction or slight external force, avoiding pipeline deformation and damage caused by rigid connection. At the same time, it ensures the relative position stability of the gas inner pipe 2 within the protective bend 1, improving the adaptability and service life of the pipeline.

[0020] The working principle of this utility model is as follows: When in use, the anti-corrosion coating 3 can protect the outside of the protective bend 1, thus playing a role in corrosion prevention. The first heat insulation layer 4 and the second heat insulation layer 5 can isolate the heat or cold of the inner wall of the protective bend 1 and the outer surface wall of the gas inner pipe 2. The filling layer 8 can further isolate the temperature difference between the protective bend 1 and the gas inner pipe 2, reduce the heat or cold conduction path, and further improve the isolation effect of the pipeline. At the same time, the filling layer 8 can buffer the vibration and impact during pipeline operation and can also play a role in preventing condensation. The gas inner pipe 2 is fixed to the gas inner pipe 2 by the fixing ring 9, which can improve the stability of the gas inner pipe 2 when it is inserted into the protective bend 1. With the cooperation of the fastening bolt 11 and the ball 13, the gas inner pipe 2 can freely expand and contract and move within a small range when subjected to thermal expansion and contraction or slight external force, avoiding pipe deformation and damage caused by rigid connection. At the same time, it ensures the relative position of the gas inner pipe 2 in the protective bend 1 is stable, improving the adaptability and service life of the pipeline.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas pipeline for preventing low-temperature condensation, comprising a protective bend (1) and an inner gas pipe (2) located inside the protective bend (1), characterized in that: The protective bend (1) is provided with an anti-corrosion coating (3) on the outside, the inner wall of the protective bend (1) is provided with a first heat insulation layer (4), the outer surface of the gas inner pipe (2) is provided with a second heat insulation layer (5), and a filling layer (8) is provided between the gas inner pipe (2) and the protective bend (1). The bottom end of the protective bend (1) is provided with a sealing head (6), and the bottom of the sealing head (6) is provided with a connecting groove (7). Multiple fixing rings (9) are sleeved on the outside of the gas inner pipe (2). Fixing ear plates (10) are fixedly connected to both ends of the fixing rings (9). Fastening bolts (11) are inserted in the middle of the fixing ear plates (10). Elastic plates (12) are fixedly connected around the fixing rings (9). A ball bearing (13) is embedded at one end of the elastic plate (12).

2. A gas pipeline for preventing low-temperature condensation according to claim 1, characterized in that: The anti-corrosion coating (3) is made of epoxy resin with a thickness of 0.3-0.5mm. The first heat insulation layer (4) and the second heat insulation layer (5) are both made of aerogel felt. The thickness of the first heat insulation layer (4) is 1.5-2.5cm and the thickness of the second heat insulation layer (5) is 1-1.5cm.

3. A gas pipeline for preventing low-temperature condensation according to claim 1, characterized in that: The filling layer (8) is made of polyurethane foam material, the fixing ring (9) is located in the middle of the filling layer (8), the sealing head (6) is connected to the protective bend (1) by threads, and a rubber sealing ring is provided at the connection.

4. A gas pipeline for preventing low-temperature condensation according to claim 1, characterized in that: The fixing ring (9) is tightly fitted to the outer surface of the gas inner pipe (2), one end of the fastening bolt (11) is fitted with a nut, and the elastic plate (12) is set with a "V" shaped structure.

5. A gas pipeline for preventing low-temperature condensation according to claim 1, characterized in that: One end of the elastic plate (12) is in contact with the inner wall of the protective bend (1), and the ball (13) is located at the end of the elastic plate (12) away from the protective bend (1), and the ball (13) is in contact with the inner wall of the inner tube (2).

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