Heat-resistant light-resistant toughened PE (polyethylene) gas pipe

Abstract

The utility model relates to the technical field of pipe fittings, in particular to a heat-resistant and light-resistant toughened PE (polyethylene) gas pipe, which comprises a pipe body, a heat-insulating and toughening layer is arranged on the peripheral surface of the pipe body, and a light-resistant layer is further arranged on the peripheral surface of the heat-insulating layer. The heat insulation toughening layer is arranged on the peripheral face of the pipe body, so that external heat is difficult to directly transfer into the pipe body, it is ensured that potential safety hazards caused by too high temperature of fuel gas conveyed in the pipe body are avoided, and meanwhile the toughness of the pipe body can be enhanced so that the pipe body can not be broken easily. And the light blocking layer is arranged to prevent external ultraviolet rays from irradiating the pipe body to reduce the service life of the pipe body, so that the pipe can be suitable for outdoor unshielded use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, and more specifically, to a heat-resistant, light-resistant and toughened PE gas pipe. Background Art

[0002] PE gas pipes are an alternative to traditional steel and polyvinyl chloride (PVC) gas pipes and are widely used in gas transportation. With increasingly stringent safety and other requirements, the performance requirements for PE gas pipes are becoming increasingly demanding. PE gas pipes typically need to be buried underground for extended periods of time. Temperature fluctuations near the pipes can cause pressure and vibration within the pipes, which can easily cause cracks in the PE pipes, leading to dangerous gas leaks.

[0003] There is a Chinese utility model, with the publication number CN218468435U, which discloses a rupture-resistant composite modified PE gas pipe, which relates to the field of gas pipes and includes a main base pipe, an elastic ligament ring embedded in the main base pipe, a pressure-resistant layer fixedly connected to the outer end face of the main base pipe, a reinforced protective layer fixedly connected to the outer end face of the pressure-resistant layer, a protective cavity provided between the reinforced protective layer and the pressure-resistant layer, shock-absorbing elastic strips evenly distributed in the protective cavity, and an outer protective sleeve fixedly connected to the outer end face of the reinforced protective layer. This utility model strengthens the toughness and ductility of the main base pipe by providing an elastic ligament ring in the main base pipe, and at the same time provides a pressure-resistant layer on the outer side of the main base pipe, so that the gas pipe can withstand pressure in the circumferential direction regardless of internal pressure or external impact force, and provides buffering protection through the hard rubber pad and the shock-absorbing elastic strip, while also reducing vibration generated in the gas pipe.

[0004] However, in the above technical solution, the temperature inside the main base tube is easily affected by the environment. When the external ambient temperature is high, the external temperature is easily transmitted to the inside of the main base tube, causing a safety hazard to the gas transported inside the main base tube; at the same time, the ultraviolet rays in the sunlight can directly irradiate the gas pipe, shortening the service life of the gas pipe, making the gas pipe unsuitable for outdoor unobstructed use scenarios. Utility Model Content

[0005] In order to solve the problems in the existing technology, the utility model provides a heat-resistant and light-resistant toughened PE gas pipe, which has a blocking effect on external heat, making it difficult for external heat to be directly transferred into the pipe, ensuring that the gas transported in the pipe will not cause safety hazards due to excessive temperature. At the same time, it can also enhance the toughness of the pipe body, making the pipe body not easy to break, so that the pipe can withstand higher pressure, and also block ultraviolet rays in the sun, avoiding ultraviolet rays directly hitting the pipe body and causing accelerated aging of the pipe, thereby extending the service life of the pipe.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a heat-resistant and light-resistant toughened PE gas pipe, including a pipe body, a heat-insulating toughening layer is provided on the outer peripheral surface of the pipe body, and a light-blocking layer is also provided on the outer peripheral surface of the heat-insulating toughening layer.

[0007] In this technical solution, the pipe body is located at the innermost part of the pipe, and the transported gas flows inside the pipe body. Since the gas is highly flammable, when oxygen is mixed into the pipeline, if the temperature inside the pipeline reaches a high level, it is very likely to ignite the gas, causing a safety hazard. Therefore, it is necessary to ensure that the pipeline environment is at a temperature suitable for gas transportation. A thermal insulation and toughening layer is provided on the outer peripheral surface of the pipe body. The thermal insulation and toughening layer can isolate the heat from the outside so that it cannot be transferred into the pipeline, thereby achieving the effect of controlling the temperature in the pipeline and improving the safety of gas transportation in the pipeline. At the same time, the thermal insulation and toughening layer also has a toughening effect on the pipe body, so that the pipeline can withstand greater external pressure and is not prone to cracking, breaking, etc., and is suitable for use in scenarios with high environmental pressure such as underground burial. During use, the ultraviolet rays in the sun will cause certain damage to the pipe body. Long-term direct exposure to ultraviolet rays in the sun will cause the pipe body to age faster and shorten the service life of the pipe body. Therefore, a light-blocking layer is also provided on the outer peripheral surface of the heat-insulating toughening layer. The light-blocking layer is located on the outermost side of the pipe. When sunlight shines on the pipe, the light-blocking layer located on the outermost side of the pipe will block the reflected sunlight. On the one hand, it blocks the sunlight and prevents ultraviolet rays from causing aging of the pipe body and shortening its service life. On the other hand, sunlight contains heat. The light-blocking layer blocks the heat radiation in the sunlight while blocking the sunlight, thereby enhancing the thermal insulation effect. This enables the pipe to be suitable for outdoor use scenarios where there is no shelter and the pipe needs to withstand direct sunlight.

[0008] Preferably, the thermal insulation and toughening layer is a polyurethane foam material structure.

[0009] Preferably, the light-blocking layer is made of aluminum.

[0010] Preferably, the light-blocking layer comprises a plurality of tubular structures connected end to end.

[0011] Preferably, the two ends of the tubular structure are a socket end and a spigot end respectively, and the spigot end of the tubular structure can be inserted into the socket end of another tubular structure.

[0012] Preferably, a fixing piece is further provided at the connection between the socket end and the plug end.

[0013] Preferably, the fixing member is a fastening bolt, the socket end is provided with a bolt hole, the socket end is provided with a threaded hole, the fixing member is inserted into the bolt hole and the threaded hole, and the threaded hole is a threaded hole.

[0014] Preferably, the bolt hole is a groove-shaped structure arranged along the length direction of the tube body, and the side wall surface of the bolt hole is a serrated surface.

[0015] Preferably, the length of the tubular structure along the length direction of the tube body is 1m to 2m.

[0016] Preferably, the tube body is made of high-density polyethylene material.

[0017] Compared with the existing technology, the present invention has the following advantages: by providing a heat-insulating and toughening layer on the outer surface of the pipe body, it is difficult for external heat to be directly transferred into the pipe body, ensuring that the gas transported in the pipe body will not cause safety hazards due to excessive temperature. At the same time, it can also enhance the toughness of the pipe body, making it less likely to break, making the pipe suitable for use in scenarios such as underground installation where it needs to withstand high external pressure. A light-blocking layer is provided to prevent external ultraviolet rays from irradiating the pipe body and reducing its service life, making the pipe suitable for outdoor use in unobstructed scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the heat-resistant and light-resistant toughened PE gas pipe of the utility model;

[0019] Figure 2 This is a cross-sectional view of the connection between different tubular structures in the heat-resistant and light-resistant toughened PE gas pipe of the utility model;

[0020] Figure 3 It is a top view of the connection between different tubular structures in the heat-resistant, light-resistant and toughened PE gas pipe of the present invention.

[0021] In the accompanying drawings: 1. tube body; 2. heat-insulating and toughening layer; 3. light-blocking layer; 31. socket end; 32. plug end; 33. fixing piece; 34. bolt hole; 35. threaded hole. DETAILED DESCRIPTION

[0022] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0025] Example 1

[0026] like Figure 1As shown, a heat-resistant and light-resistant toughened PE gas pipe comprises a pipe body 1, a heat-insulating toughening layer 2 is provided on the outer peripheral surface of the pipe body 1, and a light-blocking layer 3 is further provided on the outer peripheral surface of the heat-insulating toughening layer 2. The pipe body 1 is located at the innermost part of the pipe, and the transported gas flows inside the pipe body. Since the gas has a high flammability, when oxygen is mixed into the pipe, if the temperature inside the pipe reaches a high level, it is very likely to ignite the gas, causing a safety hazard. Therefore, it is necessary to ensure that the pipeline environment is at a temperature suitable for gas transportation. A heat-insulating toughening layer 2 is provided on the outer peripheral surface of the pipe body 1. The heat-insulating toughening layer 2 can isolate the heat from the outside so that it cannot be directly transferred into the pipe, thereby achieving the effect of controlling the temperature inside the pipe body 1 and improving the safety of gas transportation by the pipe. At the same time, the heat-insulating toughening layer 2 also has a toughening effect on the pipe body 1, so that the pipe can withstand greater external pressure and is not prone to cracking, breaking, etc., and is suitable for use in scenarios with high environmental pressure, such as being buried underground. During use, there are scenarios where the pipes are laid outdoors in an unobstructed environment. Pipes laid outdoors will be exposed to sunlight for a long time. The ultraviolet rays in the sunlight have certain damage to the pipe body 1. Long-term direct exposure to ultraviolet rays in the sunlight will cause the pipe body 1 to age faster, shorten the service life of the pipe body 1, and make the pipe body 1 prone to cracking and other phenomena. Therefore, a light-blocking layer 3 is also provided on the outer peripheral surface of the heat-insulating toughening layer 2. The light-blocking layer 3 is located on the outermost side of the pipe. When sunlight shines on the pipe, the light-blocking layer 3 located on the outermost side of the pipe will block the reflected sunlight. On the one hand, it blocks the sunlight outside, so that the ultraviolet rays cannot shine on the tank body 1, avoiding the ultraviolet rays causing the pipe body 1 to age and shorten its service life. On the other hand, sunlight can transfer heat through thermal radiation. The light-blocking layer 3 blocks the heat radiation in the sunlight while blocking the sunlight, thereby enhancing the thermal insulation effect, so that the pipe can be suitable for outdoor use scenarios where there is no obstruction and it needs to withstand direct sunlight, and has a better thermal insulation effect.

[0027] like Figure 1As shown, the thermal insulation and toughening layer 2 is a polyurethane foam material structure. Polyurethane material has excellent thermal insulation performance and low thermal conductivity, making it an ideal thermal insulation material. In addition, polyurethane material is not only waterproof, but also has a certain fireproof effect, which is beneficial to improving the safety of gas pipes and preventing excessive external temperature or external fire source from burning through the thermal insulation and toughening layer 2 and the pipe body 1, causing the gas in the pipe body 1 to be ignited. At the same time, the polyurethane material is a foamed structure. On the one hand, the density of the foamed polyurethane material is low and the texture is light. While ensuring the thermal insulation, the gas pipe is as light as possible, which is convenient for hoisting and is suitable for working scenes where the gas pipe is suspended and installed in the air. At the same time, the foamed polyurethane material can absorb some external impacts, protect the inside of the pipe body 1 located inside the thermal insulation and toughening layer 2, enhance the toughness of the pipe body 1, and improve the ability of the pipe body 1 to resist external impacts, making it less likely for the pipe body 1 to crack and break, and avoiding the gas in the pipe body 1 from leaking from the cracks to cause safety hazards. At the same time, the polyurethane foam material structure also has a certain degree of air tightness, and when cracks appear on the tube body 1, it can still block the gas and prevent the gas from leaking into the air and causing safety hazards.

[0028] like Figure 1 As shown, the light-blocking layer 3 is made of aluminum. The aluminum structure can reflect most of the solar radiation, thereby playing an effective role in preventing ultraviolet rays. On the one hand, it prevents ultraviolet rays from accelerating the aging of the tube body 1 and prolongs the service life of the tube body 1. On the other hand, sunlight can transfer heat through thermal radiation. The light-blocking layer 3 made of aluminum can reflect the thermal radiation in the sunlight, thereby playing a certain role in heat insulation, which is conducive to keeping the temperature inside the pipe 1 stable and preventing overheating. At the same time, the light-blocking layer 3 made of aluminum also has excellent wear resistance and can effectively resist external pressure and wear, protecting the internal structure of the light-blocking layer 3, and avoiding the reduction of the thermal insulation and toughening effect of the thermal insulation and toughening layer 2 due to wear and the rupture of the tube body 1, which causes gas leakage. The aluminum structure has stable chemical properties and can effectively resist the corrosion of external chemical materials, thereby improving the safety of the gas pipe. The light-blocking layer 3 made of aluminum has a certain airtightness. When gas leakage occurs inside the light-blocking layer 3, the aluminum structure can still prevent the gas from entering the air. The aluminum material structure is extremely light, which reduces the weight of the gas pipe and is suitable for working scenarios where the gas pipe is suspended and installed in the air.

[0029] like Figure 1As shown, the light-blocking layer 3 is composed of a plurality of tubular structures connected end to end. The light-blocking layer 3 is an aluminum material structure. On the one hand, an overly long aluminum material structure is difficult to produce and process, which is not conducive to controlling the production cost of gas pipes. On the other hand, when the surface of the light-blocking layer 3 is damaged, the one-piece light-blocking layer 3 will need to be replaced as a whole, which will increase the replacement cost and is difficult to replace. Therefore, the light-blocking layer 3 is composed of a plurality of tubular structures connected end to end. The tubular structure divides the light-blocking layer 3 into multiple relatively independent sections. On the one hand, the shorter tubular structure is easy to process, which is conducive to reducing production costs. On the other hand, when the surface of the light-blocking layer 3 is broken, it is only necessary to replace the tubular structure at the corresponding position. The replacement is simple and the replacement cost is low.

[0030] Example 2

[0031] This embodiment is similar to the above embodiment 1, except that Figure 2 As shown, the two ends of the tubular structure are respectively a socket end 31 and a spigot end 32. The spigot end 32 of the tubular structure can be inserted into the socket end 31 of another tubular structure. Different tubular structures can be connected by inserting the spigot end 32 into the socket end 31, so that the connection between different tubular structures has an overlapping structure, ensuring that there is no gap at the connection between different tubular structures that cannot be protected by the light-blocking layer 3.

[0032] like Figure 2 As shown, a fixing member 33 is further provided on the bell end 31 and the spigot end 32. The fixing mechanism 33 is used to fix the bell end 31 and the spigot end 32 to ensure that the bell end 31 and the spigot end 32 are firmly connected and will not be accidentally separated.

[0033] like Figure 2 As shown, the fixing member 33 is a fastening bolt, the socket end 31 is provided with a bolt hole 34, and the socket end 32 is provided with a threaded hole 35. The fixing member 33 is inserted into the bolt hole 34 and the threaded hole 35, and the threaded hole 35 is a threaded hole. The fastening bolt 35 is inserted into the bolt hole 34 and the threaded hole 35 to fix the relative position of the socket end 31 of the tubular structure and the socket end 32 of another tubular structure, thereby connecting two different tubular structures. When the tubular structure needs to be replaced, the tubular structure can be disassembled by loosening the fastening bolts at both ends of the tubular structure. The threaded hole 35 is a threaded hole that can achieve a threaded connection with the fastening bolt 33 and is convenient for installation and disassembly.

[0034] like Figure 3As shown, the bolt hole 34 is a groove-like structure arranged along the length of the tube body 1, and the side wall surface of the bolt hole 34 is a serrated surface. The bolt hole 34 is arranged as a groove-like structure arranged along the length of the tube body 1, so that the threaded hole 35 can be fixed at different positions on the bolt hole 34 to adjust the length of the socket end 32 inserted into the socket end 31, and thus adjust the length of different tubular structures after being spliced ​​together to adapt to the requirements of gas pipes of different lengths. The side wall surface of the bolt hole 34 is a serrated surface. When the fastening bolt 33 is inserted into the bolt hole 34, the serrated side wall surface of the bolt hole 34 has a large friction force on the fastening bolt 35, thereby fixing the fastening bolt 33 in a certain position and preventing it from sliding in the groove-shaped threaded hole 35.

[0035] Example 3

[0036] This embodiment is similar to the above embodiment 1, except that Figure 1 As shown, the tubular structure is 1 to 2 meters long along the length of the tube body 1. The light-blocking layer 3 requires a segmented design to facilitate maintenance and replacement during production and use. Furthermore, the number of tubular structures should be minimized to ensure the sealing of the light-blocking layer 3 and reduce the need for connection processing between different tubular structures. A tubular structure of 1 to 2 meters in length strikes a balance between these two requirements.

[0037] like Figure 1 As shown, the tube body 1 is constructed of high-density polyethylene (HDPE). HDPE has excellent heat and cold resistance, stable chemical properties, high rigidity and toughness, and good mechanical strength. It also exhibits good dielectric properties and environmental stress cracking resistance, low permeability to water vapor and air, and low water absorption, making it suitable for transporting gas.

[0038] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A heat-resistant and light-resistant toughened PE gas pipe, characterized in that: The invention comprises a tube body (1), wherein a heat-insulating and toughening layer (2) is provided on the outer peripheral surface of the tube body (1), and a light-blocking layer (3) is further provided on the outer peripheral surface of the heat-insulating and toughening layer (2), wherein the heat-insulating and toughening layer (2) is a polyurethane foam material structure, and the light-blocking layer (3) is an aluminum material structure.

2. The heat-resistant and light-resistant toughened PE gas pipe according to claim 1, characterized in that: The light-blocking layer (3) comprises a plurality of tubular structures connected end to end.

3. The heat-resistant and light-resistant toughened PE gas pipe according to claim 2, characterized in that: The two ends of the tubular structure are respectively a bell end (31) and a spigot end (32), and the spigot end (32) of the tubular structure can be inserted into the bell end (31) of another tubular structure.

4. The heat-resistant and light-resistant toughened PE gas pipe according to claim 3, characterized in that: A fixing piece (33) is also provided at the connection between the socket end (31) and the spigot end (32).

5. The heat-resistant and light-resistant toughened PE gas pipe according to claim 4, characterized in that: The fixing member (33) is a fastening bolt, the socket end (31) is provided with a bolt hole (34), the socket end (32) is provided with a threaded hole (35), and the fixing member (33) is connected to the bolt hole (34) and the threaded hole (35).

6. The heat-resistant and light-resistant toughened PE gas pipe according to claim 5, characterized in that: The bolt hole (34) is a groove-shaped structure arranged along the length direction of the tube body (1), and the side wall surface of the bolt hole (34) is a serrated surface.

7. The heat-resistant and light-resistant toughened PE gas pipe according to claim 2, characterized in that: The length of the tubular structure along the length direction of the tube body (1) is 1m to 2m.

8. The heat-resistant and light-resistant toughened PE gas pipe according to claim 1, characterized in that: The tube body (1) is made of high-density polyethylene material.

Images