Noise reduction equipment for natural gas pipeline

Abstract

The utility model discloses noise reduction equipment for a natural gas pipeline, which belongs to the technical field of pipeline noise reduction and comprises a natural gas pipeline main body, and a first circular half pipe and a second circular half pipe are respectively mounted on the outer side of the natural gas pipeline main body. The first circular half pipe and the second circular half pipe are each composed of an inner lining layer and an outer lining layer, a cavity is formed between each inner lining layer and the corresponding outer lining layer, a conduction opening connected with the corresponding cavity in a conduction mode is formed in the surface of each inner lining layer, and a noise reduction assembly is arranged on the inner side of each cavity. According to the natural gas pipeline, noise generated in the natural gas conveying process of the natural gas pipeline body can be reduced through the noise reduction assembly, noise reduction treatment is conducted on the connecting portion of the first circular half pipe and the second circular half pipe, the noise generated in the working process of the natural gas pipeline body can be greatly reduced, and the noise reduction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline noise reduction, and more specifically to a noise reduction device for a natural gas pipeline. Background Art

[0002] A natural gas pipeline is a pipeline that transports natural gas (including associated gas produced in oil fields) from the mining site or processing plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. In order to ensure safety, the manufacturing of natural gas pipelines is very strict. Since the pipeline is laid for a long time, it is generally connected by a large number of single pipes. The existing connection method has poor stability and the pipeline connection is prone to vibration. When the natural gas pipeline vibrates, it will generate a lot of noise and is prone to damage.

[0003] An existing patent is a natural gas pipeline noise reduction structure. In the patent authorization number CN217503036U, a first connecting sleeve and a second connecting sleeve are respectively fixed to the pipe openings of two adjacent natural gas pipelines, and a plurality of fixing blocks are fixed with fixing bolts, so that the two adjacent natural gas pipelines are stably connected, and then the plurality of fixing blocks are further fixed by a stabilizing component to improve the stability of the connection between the two natural gas pipelines. This structure reduces the fitting gap, makes the pipeline frame stable, and is not easy to vibrate, that is, reduces the noise of the natural gas pipeline.

[0004] However, in patent authorization number CN217503036U, after the first connecting sleeve and the second connecting sleeve are respectively fixed to the pipe openings of two adjacent natural gas pipelines, and multiple fixing blocks are fixed with fixing bolts, the two adjacent natural gas pipelines are stably connected, and then the multiple fixing blocks are further fixed by a stabilizing component to improve the stability of the connection between the two natural gas pipelines. This structure reduces the matching gap, makes the pipeline frame stable and not prone to vibration, that is, reduces the noise of the natural gas pipeline. Since the noise generated by natural gas during the transportation process will be transmitted through the pipeline, in order to further improve the noise reduction effect, we have proposed a noise reduction device for natural gas pipelines to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a noise reduction device for a natural gas pipeline, which can reduce the noise generated by the natural gas pipeline body during the natural gas transmission process through the noise reduction component, and perform noise reduction treatment on the connection part between the first circular half pipe and the second circular half pipe, which can greatly reduce the noise generated by the natural gas pipeline body during operation and improve the noise reduction effect.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A noise reduction device for a natural gas pipeline comprises a natural gas pipeline body, wherein a first circular half pipe and a second circular half pipe are respectively installed on the outer side of the natural gas pipeline body;

[0010] The first circular half tube and the second circular half tube are both composed of an inner lining layer and an outer lining layer, a cavity is provided between the inner lining layer and the outer lining layer, and a conduction port connected to the cavity is provided on the surface of the inner lining layer;

[0011] A noise reduction component is disposed inside the cavity;

[0012] The noise reduction component includes a perforated sound-absorbing panel arranged inside the cavity, and sound insulation cotton and heat preservation cotton which are compositely bonded to the perforated sound-absorbing panel in sequence;

[0013] Axial edges of the first circular half tube and the second circular half tube are both inlaid with a first sealing strip;

[0014] Both ends of the first circular half tube and the second circular half tube are fixedly connected with connecting bosses, and the end portions of the connecting bosses are welded with connecting ears.

[0015] Furthermore, the inner walls at both ends of the first circular half-tube and the second circular half-tube are inlaid with second sealing strips, and the second sealing strips are in contact with the outer wall of the natural gas pipeline body.

[0016] Furthermore, a buffer rubber pad is inlaid on the surface of the connecting boss, and the buffer rubber pad is arranged in an arc-shaped structure.

[0017] Furthermore, one side of the buffer rubber pad is provided with a mounting hole opened at the edge of the connecting boss.

[0018] Furthermore, the sound insulation cotton and the heat preservation cotton are both compositely arranged with multiple layers.

[0019] Furthermore, an assembly hole is provided on the surface of the connecting ear.

[0020] Furthermore, the first circular half tube and the second circular half tube are both made of stainless steel.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) In this scheme, the first sealing strips are abutted against each other to seal the end portion of the cavity. When the noise generated by the natural gas pipeline body during the natural gas transportation process is transmitted to the inner side of the cavity through the conduction port, the noise is first reduced by the perforated sound-absorbing panel. Then, the multi-fiber structure of the sound insulation cotton is used to make the sound waves reflect, overlap and collide with countless fibers when passing through the cotton, so that the sound wave energy is converted into heat energy and the sound wave intensity is weakened. Finally, the sound wave is attenuated again by the thermal insulation cotton. At the same time, the thermal insulation cotton also plays a role in heat preservation of the natural gas pipeline body, which can greatly reduce the noise generated by the natural gas pipeline body during operation and improve the noise reduction effect.

[0024] (2) In this solution, the second sealing strip is used to fill the gap between the ends of the first circular half-tube and the second circular half-tube and the outer wall of the natural gas pipeline body, thereby avoiding the noise generated by vibration, thereby improving the noise reduction effect.

[0025] (3) This solution can effectively isolate the vibration generated in the axial position of the natural gas pipeline body and absorb the impact force by utilizing the butt connection between the connecting bosses and the abutment between the buffer rubber pads, thereby avoiding the collision between the corresponding end parts of the first circular half pipe and the second circular half pipe during the connection process, and further improving the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 This is a schematic diagram of the first half-tube structure of the utility model;

[0028] Figure 3 It is a front view schematic diagram of the first half pipe of the utility model;

[0029] Figure 4 It is a schematic cross-sectional view of the first half pipe AA portion of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the noise reduction component of the utility model.

[0031] Description of the numbers in the figure:

[0032] 1. Natural gas pipeline body; 2. First circular half pipe; 3. Second circular half pipe; 4. Inner lining layer; 5. Outer lining layer; 6. Conducting port; 7. Perforated sound-absorbing board; 8. Sound-insulating cotton; 9. Heat-insulating cotton; 10. First sealing strip; 11. Connecting boss; 12. Connecting ear; 13. Second sealing strip; 14. Buffer pad. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0034] Example:

[0035] See also Figure 1-5 , a noise reduction device for a natural gas pipeline, comprising a natural gas pipeline body 1, a first circular half pipe 2 and a second circular half pipe 3 are respectively installed on the outer side of the natural gas pipeline body 1;

[0036] The first circular half tube 2 and the second circular half tube 3 are both composed of an inner lining layer 4 and an outer lining layer 5, a cavity is provided between the inner lining layer 4 and the outer lining layer 5, and a conducting port 6 connected to the cavity is provided on the surface of the inner lining layer 4;

[0037] A noise reduction component is disposed inside the cavity;

[0038] The noise reduction component includes a perforated sound-absorbing plate 7 arranged inside the cavity, and a sound insulation cotton 8 and a heat-insulating cotton 9 which are compositely bonded to the perforated sound-absorbing plate 7 in sequence;

[0039] The axial edges of the first circular half tube 2 and the second circular half tube 3 are both inlaid with a first sealing strip 10;

[0040] Both ends of the first circular half tube 2 and the second circular half tube 3 are fixedly connected with connecting bosses 11, and the ends of the connecting bosses 11 are welded with connecting ears 12;

[0041] It should be noted that when the natural gas pipeline noise reduction device is in use, the first circular half pipe 2 and the second circular half pipe 3 are installed in cooperation on the outside of the natural gas pipeline body 1, and the first sealing strips 10 are used to abut against each other to seal the port portion of the cavity. The noise generated by the natural gas pipeline body 1 in the process of transporting natural gas is transmitted to the inside of the cavity through the conduction port 6. First, the perforated sound-absorbing panel 7 is used to reduce the noise, and then the multi-fiber structure of the sound insulation cotton 8 is used to make the sound waves pass through the cotton through countless fibers. Reflection, mutual superposition, and collision, the sound wave energy is converted into heat energy, and the sound wave intensity is weakened. Finally, the sound wave is attenuated again by the thermal insulation cotton 9. At the same time, the thermal insulation cotton 9 also plays a role in heat preservation of the natural gas pipeline body 1, which can greatly reduce the noise generated by the natural gas pipeline body 1 during operation and improve the noise reduction effect.

[0042] like Figure 2As shown, the inner walls of both ends of the first circular half-tube 2 and the second circular half-tube 3 are inlaid with second sealing strips 13, and the second sealing strips 13 are in contact with the outer wall of the natural gas pipeline body 1;

[0043] It should be noted that by using the second sealing strip 13 to fill the gap between the ends of the first circular half pipe 2 and the second circular half pipe 3 and the outer wall of the natural gas pipeline body 1, noise caused by vibration can be avoided, thereby improving the noise reduction effect.

[0044] like Figure 1 , Figure 2 As shown, a buffer rubber pad 14 is inlaid on the surface of the connecting boss 11, and the buffer rubber pad 14 is arranged in an arc-shaped structure;

[0045] It should be noted that, by utilizing the butt connection between the connecting bosses 11 and the abutment between the buffer rubber pads 14, the vibration generated in the axial position of the natural gas pipeline body 1 can be effectively isolated and the impact force can be absorbed, thereby avoiding collision between the corresponding end parts of the first circular half pipe 2 and the second circular half pipe 3 during the connection process, and further improving the noise reduction effect.

[0046] like Figure 1 , Figure 2 , a mounting hole is provided on one side of the buffer rubber pad 14 and is opened at the edge of the connecting boss 11, and an assembly hole is opened on the surface of the connecting ear 12;

[0047] It should be noted that the mounting hole provided at the connecting boss 11 facilitates the connection between the first circular half pipe 2 and the second circular half pipe 3, and the assembly hole provided at the connecting ear 12 facilitates the connection between the first circular half pipe 2 and the second circular half pipe 3.

[0048] like Figure 5 As shown, the sound insulation cotton 8 and the heat insulation cotton 9 are both compositely arranged with multiple layers;

[0049] It should be noted that the noise reduction and sound insulation effects can be effectively improved.

[0050] like Figure 1 As shown, the first circular half tube 2 and the second circular half tube 3 are made of stainless steel.

[0051] It should be noted that the service life of the first circular half pipe 2 and the second circular half pipe 3 can be improved.

[0052] When in use: the first circular half pipe 2 and the second circular half pipe 3 are installed on the outside of the natural gas pipeline body 1, and the first sealing strips 10 are used to abut against each other to seal the port part of the cavity. The noise generated by the natural gas pipeline body 1 in the process of transporting natural gas is transmitted to the inside of the cavity through the conduction port 6. The perforated sound-absorbing panel 7 is first used to reduce the noise, and then the multi-fiber structure of the sound insulation cotton 8 is used to make the sound waves reflect, overlap and collide with countless fibers when passing through the cotton, so that the sound wave energy is converted into heat energy and the sound wave intensity is weakened. Finally, the sound wave is attenuated again by the thermal insulation cotton 9. At the same time, the thermal insulation cotton 9 also plays a role in heat preservation of the natural gas pipeline body 1.

[0053] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A noise reduction device for a natural gas pipeline, comprising a natural gas pipeline body (1), characterized in that: A first circular half pipe (2) and a second circular half pipe (3) are respectively installed on the outer side of the natural gas pipeline body (1); The first circular half tube (2) and the second circular half tube (3) are both composed of an inner lining layer (4) and an outer lining layer (5), a cavity is provided between the inner lining layer (4) and the outer lining layer (5), and a conduction port (6) is provided on the surface of the inner lining layer (4) and is conductively connected to the cavity; A noise reduction component is disposed inside the cavity; The noise reduction component comprises a perforated sound absorbing plate (7) arranged inside the cavity, and sound insulation cotton (8) and heat insulation cotton (9) which are compositely bonded to the perforated sound absorbing plate (7) in sequence; Axial edge portions of the first circular half tube (2) and the second circular half tube (3) are both inlaid with first sealing strips (10); Both ends of the first circular half tube (2) and the second circular half tube (3) are fixedly connected with connecting bosses (11), and the end portions of the connecting bosses (11) are welded with connecting ears (12).

2. A noise reduction device for a natural gas pipeline according to claim 1, characterized in that: The inner walls at both ends of the first circular half-tube (2) and the second circular half-tube (3) are inlaid with second sealing strips (13), and the second sealing strips (13) are in contact with the outer wall of the natural gas pipeline body (1).

3. A noise reduction device for a natural gas pipeline according to claim 1, characterized in that: A buffer rubber pad (14) is inlaid on the surface of the connecting boss (11), and the buffer rubber pad (14) is arranged in an arc-shaped structure.

4. A noise reduction device for a natural gas pipeline according to claim 3, characterized in that: One side of the buffer rubber pad (14) is provided with a mounting hole opened at the edge of the connecting boss (11).

5. A noise reduction device for a natural gas pipeline according to claim 1, characterized in that: The sound insulation cotton (8) and the heat preservation cotton (9) are both compositely arranged with multiple layers.

6. A noise reduction device for a natural gas pipeline according to claim 1, characterized in that: The surface of the connecting ear (12) is provided with an assembly hole.

7. A noise reduction device for a natural gas pipeline according to claim 1, characterized in that: The first circular half tube (2) and the second circular half tube (3) are both made of stainless steel.

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