Structure and processing technology of a flame-retardant municipal gas pipeline

Abstract

The present invention discloses a structure of a flame-retardant municipal gas pipeline, including a flame-retardant pipe, a connecting ring and a control rod arranged on the gas pipeline body. The outer surface of the gas pipeline body is sleeved with a flame-retardant pipe. The present invention also discloses a processing technology of the flame-retardant municipal gas pipeline, which comprises the following steps: Step 1: The sealing plates on both sides of the gas pipeline body are fixedly pressed on the gas pipeline body through cold pressing, and are put into use after passing the strength test; Step 2: A plurality of air holes are opened on the upper surface of the flame-retardant pipe, and grooves for placing a sealing door and a solenoid valve are opened inside the air holes through a small drilling machine. In this device, a flame-retardant pipe is arranged at the outer end of the gas pipeline body, and the flame-retardant pipe has the functions of heat dissipation, fire prevention and freeze prevention. The gas pipeline body is not prone to explosion, and has high safety. Moreover, the gas inside the gas pipeline body can flow stably, and there will be no phenomenon that the flow rate of the gas becomes slower or faster in cold or hot weather, which is suitable for popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipelines, and specifically to a structure and processing technology of a flame-retardant municipal gas pipeline. Background Art

[0002] A gas pipeline refers to a pipeline that transports gas (including associated gas produced in oil fields) from the production site or treatment plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. Using gas pipelines to transport gas is the only way to transport natural gas in large quantities on land. Among the total length of pipelines in the world, gas pipelines account for about half. In actual use, the following disadvantages still exist in gas pipelines:

[0003] 1. Sometimes, the gas pipeline will crack due to external forces or other reasons. However, due to a large amount of gas in the gas pipeline, it is inconvenient to disassemble and replace the gas pipeline, and the maintenance cost is relatively high.

[0004] 2. The flame retardancy of the gas pipeline is still not high enough. It will still expand slightly or even crack under long-term fire or high-temperature action. When the gas pipeline cracks, it is easy to explode, resulting in safety accidents, and the safety is relatively low. Summary of the Invention

[0005] The purpose of the present invention is to provide a structure and processing technology of a flame-retardant municipal gas pipeline to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A structure of a flame-retardant municipal gas pipeline, including a flame-retardant pipe, a connecting ring, and a control rod provided on the gas pipeline body. The outer surface of the gas pipeline body is sleeved with a flame-retardant pipe, which is divided into an upper half flame-retardant pipe and a lower half flame-retardant pipe. One end of the upper half flame-retardant pipe and the lower half flame-retardant pipe close to each other are both fixedly provided with connecting plates. The connecting plates are in the shape of rectangular plates, and the upper and lower two connecting plates are connected by screws. The surface of the flame-retardant pipe is also provided with air holes, and a sealing door is also provided on one side of the air holes. The sealing door is movably arranged in the inner wall of the flame-retardant pipe. Both ends of the flame-retardant pipe are respectively attached to the connecting rings on the left and right sides. The diameter of the connecting ring is larger than the diameter of the flame-retardant pipe. The connecting ring is in a circular ring structure and is fixedly arranged at the end of the gas pipeline body. The connecting ring is provided with screw holes arranged in a circular array, and screws are arranged in the screw holes. The connecting rings between adjacent gas pipeline bodies are connected to each other through the screws and the screw holes. A plurality of limiting columns are also fixedly arranged in the inner wall of the flame-retardant pipe. The plurality of limiting columns are arranged at equal distances and sizes and are movably attached to the outer surface of the gas pipeline body. A rotating shaft is horizontally arranged on the limiting column. The rotating shaft is movably arranged on the limiting column. Blades are fixedly arranged on the rotating shafts at both ends of the limiting column. Sealing plates are arranged inside both ends of the gas pipeline body. The sealing plates are in the shape of circular plates, and a rubber sealing gasket is sleeved on the outer ring of the sealing plate. The rubber sealing gasket is attached to the inner wall of the gas pipeline body. A control rod is also provided on the sealing plate. The control rod penetrates through the outer surface of the gas pipeline body and the outer surface of the flame-retardant pipe at the same time. A rubber sealing gasket is also fixedly arranged at the position where the control rod penetrates through the outer ring of the gas pipeline body. The rubber sealing gasket here is attached to the outer surface of the gas pipeline body.

[0007] Preferably, a plurality of air holes are provided. The plurality of air holes are arranged at equal distances and sizes on the flame-retardant pipe, and the air holes communicate with both ends inside and outside the flame-retardant pipe.

[0008] Preferably, the length and width of the sealing door respectively correspond to the length and width of the air hole, and an electromagnetic valve is also provided at the bottom end of the sealing door.

[0009] A processing technology of a flame-retardant municipal gas pipeline includes the following steps:

[0010] Step 1: The sealing plates on both sides of the gas pipeline body are fixedly pressed on the gas pipeline body through cold pressing, and after passing the strength test, it is put into use;

[0011] Step 2: A plurality of air holes are drilled on the upper surface of the flame-retardant pipe by a drilling machine, and a groove for placing the sealing door and the electromagnetic valve is drilled inside the air holes by a small drilling machine;

[0012] Step 3: After connecting the sealing door with the electromagnetic valve, it is installed into the groove inside the air hole (the model of the electromagnetic valve here is: TFM54-250HP, and this model of electromagnetic valve has good explosion-proof and rust-proof properties);

[0013] Step 4: Sheath the upper half flame-retardant pipe and the lower half flame-retardant pipe on the upper and lower ends of the gas pipeline body respectively, and connect the upper half flame-retardant pipe and the lower half flame-retardant pipe through a connecting plate and screws, then the gas pipeline body can be arranged inside the flame-retardant pipe;

[0014] Step 5: Connect different numbers of gas pipeline bodies through the screw holes and screws on the connecting ring according to actual needs.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, with the following advantages:

[0016] 1. Sealing plates are provided at both ends of the gas pipeline body in this device. When cracks and leaks occur on the gas pipeline body, the sealing plates can be closed through the control rod. At this time, both ends of the gas pipeline body are in a closed state, and there will be no gas flow phenomenon. When the gas at the damaged part is completely discharged, safe maintenance can be carried out, with high safety. Moreover, the flame-retardant pipes outside the gas pipeline body are connected through connecting plates and screws, and the maintenance cost is relatively low;

[0017] 2. A flame-retardant pipe is provided outside the gas pipeline body in this device. The flame-retardant pipe has the functions of heat dissipation, fire prevention, and anti-freezing. The gas pipeline body is not prone to explosion, with high safety. Moreover, the gas inside the gas pipeline body can flow stably, and there will be no phenomenon that the gas flow rate becomes slower or faster in cold or hot weather, which is suitable for popularization. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic internal structure diagram of the flame-retardant pipe of the present invention;

[0020] Figure 3 is the present invention Figure 2 Schematic enlarged view of the structure of area A in.

[0021] In the figure: 1 gas pipeline body, 2 flame-retardant pipe, 3 connecting ring, 4 control rod, 5 connecting plate, 6 screw, 7 air hole, 8 sealing plate, 9 rubber sealing pad, 10 limiting column, 11 rotating shaft, 12 fan blade, 13 screw hole, 14 sealing door, 15 solenoid valve. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-3 , the present invention provides a technical solution: a structure of a flame-retardant municipal gas pipeline, including a flame-retardant pipe 2, a connecting ring 3, and a control rod 4 provided on the gas pipeline body 1. A flame-retardant pipe 2 is sleeved on the outer surface of the gas pipeline body 1. The flame-retardant pipe 2 is divided into an upper half flame-retardant pipe and a lower half flame-retardant pipe. Connecting plates 5 are fixedly provided at the adjacent ends of the upper half flame-retardant pipe and the lower half flame-retardant pipe. The connecting plates 5 are in the shape of rectangular plates. The upper and lower two connecting plates 5 are connected by screws 6. Air holes 7 are also provided on the surface of the flame-retardant pipe 2. There are multiple air holes 7, and the multiple air holes 7 are arranged at equal distances and of equal size on the flame-retardant pipe 2. The air holes 7 communicate with both ends inside and outside the flame-retardant pipe 2. A sealing door 14 is also provided on one side of the air hole 7. The length and width of the sealing door 14 correspond to the length and width of the air hole 7 respectively. An electromagnetic valve 15 is also provided at the bottom end of the sealing door 14. The sealing door 14 is movably arranged in the inner wall of the flame-retardant pipe 2. The two ends of the flame-retardant pipe 2 are respectively attached to the connecting rings 3 on the left and right sides. The diameter of the connecting ring 3 is larger than the diameter of the flame-retardant pipe 2. The connecting ring 3 is in the shape of a circular ring. The connecting ring 3 is fixedly provided at the end of the gas pipeline body 1. Screw holes 13 are provided on the connecting ring 3 in a circular array distribution. Screws 6 are provided in the screw holes 13. The connecting rings 3 between adjacent gas pipeline bodies 1 are connected to each other through the screws 6 and the screw holes 13. Limit columns 10 are also fixedly provided in the inner wall of the flame-retardant pipe 2. There are multiple groups of limit columns 10. The multiple groups of limit columns 10 are movably attached to the outer surface of the gas pipeline body 1 at equal distances and of equal size. A rotating shaft 11 is horizontally provided on the limit column 10. The rotating shaft 11 is movably arranged on the limit column 10. Blades 12 are fixedly provided on the rotating shafts 11 at both ends of the limit column 10. Sealing plates 8 are provided inside both ends of the gas pipeline body 1. The sealing plates 8 are in the shape of circular plates. A rubber sealing gasket 9 is sleeved on the outer ring of the sealing plate 8. The rubber sealing gasket 9 is attached to the inner wall of the gas pipeline body 1. A control rod 4 is also provided on the sealing plate 8. The control rod 4 penetrates through the outer surface of the gas pipeline body 1 and the outer surface of the flame-retardant pipe 2 at the same time. A rubber sealing gasket 9 is also fixedly provided at the position where the control rod 4 penetrates through the outer ring of the gas pipeline body 1. The rubber sealing gasket 9 here is attached to the outer surface of the gas pipeline body 1.

[0024] A processing technology for a flame-retardant municipal gas pipeline includes the following steps:

[0025] Step 1: Fix the sealing plates 8 on both sides of the gas pipeline body 1 by cold pressing, and put them into use after passing the strength test;

[0026] Step Two: A plurality of air holes 7 are opened on the upper surface of the flame-retardant pipe 2 by a drilling machine, and a groove for placing the sealing door 14 and the solenoid valve 15 is opened inside the air hole 7 by a small drilling machine;

[0027] Step Three: After connecting the sealing door 14 to the solenoid valve 15, install it into the groove inside the air hole 7 (here, the model of the solenoid valve 15 is: TFM54-250HP, and this model of solenoid valve 15 has good explosion-proof and rust-proof properties);

[0028] Step Four: Sheath the upper half and the lower half of the flame-retardant pipe on the upper and lower ends of the gas pipeline body 1 respectively, and connect the upper half and the lower half of the flame-retardant pipe through the connecting plate 5 and the screw 6, then the gas pipeline body 1 can be arranged inside the flame-retardant pipe 2;

[0029] Step Five: Connect different numbers of gas pipeline bodies 1 to each other through the screw holes 13 on the connecting ring 3 and the screws 6 according to actual needs.

[0030] Working principle: The flame-retardant pipe 2 is fixed to the outer end of the gas pipeline body 1 through the connecting plate 5 and the screw 6, which is convenient for disassembly and assembly. When the sealing door 14 on the flame-retardant pipe 2 is opened, the external air flow flows into the space between the flame-retardant pipe 2 and the gas pipeline body 1 through the air holes 7, and the incoming air flow drives the fan blades 12 to rotate, ensuring the air temperature between the gas pipeline body 1 and the flame-retardant pipe 2, with good heat dissipation. Moreover, both the flame-retardant pipe 2 and the sealing door 14 are made of flame-retardant materials, with good fire prevention performance. When a fire occurs, the solenoid valve 15 controls the sealing door 14 to seal the air holes 7, so that the fire will not spread to the outer wall of the gas pipeline body 1, and the gas pipeline body 1 is not likely to explode. The model of the solenoid valve 15 is: TFM54-250HP, and this model of solenoid valve 15 has good explosion-proof and rust-proof properties and can work stably during a fire. The solenoid valve 15 is an existing technology and will not be elaborated here. In winter, the flame-retardant pipe 2 can also be sealed to ensure that the temperature at the outer end of the gas pipeline body 1 will not be too low, which does not affect the gas flow rate and is suitable for popularization.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Structure of a flame-retardant municipal gas pipeline, Characterized in that: It includes a flame-retardant pipe (2), a connecting ring (3) and a control rod (4) arranged on the gas pipeline body (1). A flame-retardant pipe (2) is sleeved on the outer surface of the gas pipeline body (1). The flame-retardant pipe (2) is divided into an upper half flame-retardant pipe and a lower half flame-retardant pipe. Connecting plates (5) are fixedly arranged at the adjacent ends of the upper half flame-retardant pipe and the lower half flame-retardant pipe. The connecting plate (5) is in the shape of a rectangular plate. The upper and lower two connecting plates (5) are connected by screws (6). Air holes (7) are also arranged on the surface of the flame-retardant pipe (2). A sealing door (14) is arranged on one side of the air hole (7). The sealing door (14) is movably arranged in the inner wall of the flame-retardant pipe (2). The two ends of the flame-retardant pipe (2) are respectively attached to the connecting rings (3) on the left and right sides. The diameter of the connecting ring (3) is larger than the diameter of the flame-retardant pipe (2). The connecting ring (3) is in the shape of a circular ring. The connecting ring (3) is fixedly arranged at the end of the gas pipeline body (1). Screw holes (13) are arranged on the connecting ring (3) in a circular array. Screws (6) are arranged in the screw holes (13). The connecting rings (3) between adjacent gas pipeline bodies (1) are connected to each other through the screws (6) and the screw holes (13). Limit columns (10) are also fixedly arranged in the inner wall of the flame-retardant pipe (2). There are multiple groups of limit columns (10). The multiple groups of limit columns (10) are arranged at equal distances and of equal size and are movably attached to the outer surface of the gas pipeline body (1). A rotating shaft (11) is arranged horizontally on the limit column (10). The rotating shaft (11) is movably arranged on the limit column (10). Fan blades (12) are fixedly arranged on the rotating shafts (11) at both ends of the limit column (10). Sealing plates (8) are arranged inside both ends of the gas pipeline body (1). The sealing plate (8) is in the shape of a circular plate. A rubber sealing pad (9) is sleeved on the outer circle of the sealing plate (8). The rubber sealing pad (9) is attached to the inner wall of the gas pipeline body (1). A control rod (4) is also arranged on the sealing plate (8). The control rod (4) penetrates through the outer surface of the gas pipeline body (1) and the outer surface of the flame-retardant pipe (2) at the same time. A rubber sealing pad (9) is also fixedly arranged at the position where the control rod (4) penetrates through the outer circle of the gas pipeline body (1). The rubber sealing pad (9) here is attached to the outer surface of the gas pipeline body (1); Multiple air holes (7) are arranged. The multiple air holes (7) are arranged at equal distances and of equal size on the flame-retardant pipe (2). The air holes (7) communicate with the inner and outer ends of the flame-retardant pipe (2); The length and width of the sealing door (14) respectively correspond to the length and width of the air hole (7). An electromagnetic valve (15) is also arranged at the bottom end of the sealing door (14).

2. Processing technology of the structure of a flame-retardant municipal gas pipeline as described in claim 1, Characterized in that, The processing process of this product includes the following steps: Step 1: Fix and press the sealing plates (8) on both sides of the gas pipeline body (1) onto the gas pipeline body (1) by cold pressing, and put it into use after strength testing; Step Two: Multiple air holes (7) are opened on the upper surface of the flame-retardant pipe (2), and grooves for placing the sealing door (14) and the solenoid valve (15) are opened inside the air holes (7) by a small drilling machine; Step Three: After connecting the sealing door (14) to the solenoid valve (15), install it into the groove inside the air hole (7); Step Four: Sheathe the upper half of the flame-retardant pipe and the lower half of the flame-retardant pipe on the upper and lower ends of the gas pipeline body (1) respectively, and connect the upper half of the flame-retardant pipe and the lower half of the flame-retardant pipe through the connecting plate (5) and the screw (6), then the gas pipeline body (1) can be arranged inside the flame-retardant pipe (2); Step Five: Connect different numbers of gas pipeline bodies (1) according to actual needs through the screw holes (13) on the connecting ring (3) and the screws (6).

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