A device for controlling pipe vibration by simultaneous action on the inside and outside of the pipe

Abstract

The application discloses a device for controlling pipeline vibration by simultaneously acting on the inner and outer sides of the pipeline, and belongs to the technical field of oil and gas transmission. The device comprises a piezoelectric ceramic rod, a multi-mesh orifice plate, a multi-stage air bag, a telescopic rod, a first flange and a second flange. One end of the telescopic rod is connected with the first flange, and the other end is connected with one end of the multi-stage air bag through the piezoelectric ceramic rod. The other end of the multi-stage air bag is connected with one end of the piezoelectric ceramic rod. The other end of the piezoelectric ceramic rod is connected with the second flange through the telescopic rod. The multi-mesh orifice plate is arranged in a first pipeline and a second pipeline. The first flange is sleeved on the periphery of the first pipeline. The second flange is sleeved on the periphery of the second pipeline. The device is provided with the multi-mesh orifice plate to reform the flow state. When the pipeline vibrates, the multi-mesh orifice plate and damping particles first reduce the pipeline vibration. When the vibration amplitude is too large, the multi-stage air bag is gradually expanded and provides resistance under the excitation of the external piezoelectric ceramic rod, thereby reducing the vibration.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas transportation technology, and specifically relates to a device for controlling pipeline vibration by acting simultaneously inside and outside the pipe. Background Technology

[0002] During long-distance oil and gas transportation, pipelines are subjected to intermittent excitation. This excitation generates forced vibrations, resulting in fluctuating pressure within the pipeline, known as pressure pulsation. If the generated excitation force is close to or the same as the pipeline's natural frequency, resonance can occur, potentially causing severe damage to the pipeline. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a device for controlling pipeline vibration by acting simultaneously inside and outside the pipe, comprising: a piezoelectric ceramic rod, a multi-mesh perforated plate, a multi-stage airbag, a telescopic rod, a first flange, and a second flange;

[0004] One end of the retractable rod is connected to the first flange, and the other end is connected to one end of the multi-stage airbag via a piezoelectric ceramic rod.

[0005] The other end of the multi-stage airbag is connected to one end of the piezoelectric ceramic rod.

[0006] The other end of the piezoelectric ceramic rod is connected to the second flange via a telescopic rod.

[0007] The multi-mesh perforated plate is disposed inside the first pipe and the second pipe;

[0008] The first flange is fitted around the first pipe;

[0009] The second flange is fitted around the second pipe;

[0010] The first and second pipes are arranged in parallel.

[0011] Furthermore, the multi-mesh plate is provided with multiple mesh openings;

[0012] The mesh is generally in the shape of a Venturi tube.

[0013] Furthermore, the outer diameter of the mesh inlet or outlet is 1 / 20 to 1 / 17 of the outer diameter of the first or second pipe.

[0014] Furthermore, the inner diameter of the mesh throat is 1 / 25 to 1 / 22 of the outer diameter of the first or second pipe.

[0015] Furthermore, the thickness of the multi-mesh plate is 1 / 40 to 1 / 30 of the outer diameter of the first or second pipe.

[0016] Furthermore, the multi-stage airbag is circular in shape and is divided into a first airbag and a second airbag;

[0017] The first and second airbags are symmetrical in structure, both being semi-circular;

[0018] The first or second airbag is composed of a semi-circular airbag and multiple semi-annular airbags.

[0019] Furthermore, a first outer pipe is fitted around the first pipe;

[0020] Several vibration damping cavities are circumferentially arranged in the annular space between the first pipe and the first outer pipe;

[0021] A second outer pipe is fitted around the second pipe;

[0022] The annular space between the second pipe and the second outer pipe is provided with several vibration damping cavities in a circumferential direction;

[0023] The vibration damping cavity is filled with damping particles;

[0024] A first flange is fixedly installed on the first outer tube;

[0025] A second flange is fixedly installed on the second outer pipe.

[0026] Furthermore, the vibration damping cavity includes a plurality of spaced-apart filling grooves;

[0027] The filling groove is filled with damping particles;

[0028] The damping particles are made of materials including iron, lead, lead-tin alloy, copper-based alloy, talc, ceramics, and rubber.

[0029] Furthermore, the vibration damping cavity is made of materials including rubber, glass fiber, asbestos fiber, lead-tin alloy, and copper-based alloy.

[0030] Furthermore, the first pipe, the first outer pipe, the second pipe, and the second outer pipe are steel pipes, alloy pipes, aluminized pipes, and fiberglass pipes.

[0031] Compared with the prior art, the embodiments of the present invention have at least the following advantages: The device for controlling pipeline vibration by acting simultaneously inside and outside the pipe can effectively reduce the flow rate and pressure pulsation of oil and natural gas, reduce impact, reshape the flow state, and change the vibration frequency by setting a multi-mesh perforated plate; when the pipeline vibrates, the multi-mesh perforated plate and damping particles reduce the pipeline vibration first; when the vibration amplitude is too large, the multi-stage airbags are gradually deployed under the excitation of the external piezoelectric ceramic rods and provide resistance to reduce vibration; at the same time, the two pipelines are connected by a rod structure, so that when one pipeline vibrates severely, the vibration can be slowed down by the other pipeline.

[0032] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of a device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to an embodiment of the present invention is shown;

[0035] Figure 2 A schematic diagram of a multi-mesh perforated plate according to an embodiment of the present invention is shown;

[0036] Figure 3 A schematic diagram of the mesh structure according to an embodiment of the present invention is shown;

[0037] Figure 4 A schematic diagram of a vibration damping cavity filled with damping particles according to an embodiment of the present invention is shown.

[0038] Reference numerals: 1. Piezoelectric ceramic rod; 2. Multi-mesh plate; 3. Multi-stage airbag; 4. Telescopic rod; 5. First flange; 6. Vibration damping cavity; 7. Mesh; 8. Damping particles; 9. Second flange. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Figure 1 A schematic diagram of a device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to an embodiment of the present invention is shown. Figure 1 As shown, the present invention proposes a device for controlling pipeline vibration by acting simultaneously inside and outside the pipe, comprising: a piezoelectric ceramic rod 1, a multi-mesh perforated plate 2, a multi-stage airbag 3, a telescopic rod 4, a first flange 5, a vibration damping cavity 6, a mesh 7, damping particles 8, and a second flange 9.

[0041] One end of the retractable rod 4 (left side) is connected to the first flange 5, and the other end is connected to one end of the multi-stage airbag 3 through a piezoelectric ceramic rod 1 (left side);

[0042] The other end of the multi-stage airbag 3 is connected to one end of another piezoelectric ceramic rod 1 (right side);

[0043] The other end of the piezoelectric ceramic rod 1 (right side) is connected to the second flange 9 via another telescopic rod 4 (right side);

[0044] The multi-mesh perforated plate 2 is disposed inside the first pipe and the second pipe, and is located within the annular inner cavity area of ​​the first flange 5 or the second flange 9; for example, the multi-mesh perforated plate 2 is welded to the inner wall of the conveying pipe to avoid causing additional vibration.

[0045] The first flange 5 is fitted around the first pipe;

[0046] The second flange 9 is fitted around the second pipe;

[0047] The multi-stage airbag 3 is electrically connected to the piezoelectric ceramic rod 1;

[0048] The first and second pipes are arranged in parallel.

[0049] After the piezoelectric ceramic rod 1 and the telescopic rod 4 are first connected to the multi-stage airbag 3, the two pipes are connected.

[0050] like Figure 1 As shown, the multi-stage airbag 3 is circular in shape and is divided into a first airbag and a second airbag;

[0051] The first and second airbags are symmetrical in structure, both being semi-circular;

[0052] The first or second airbag is composed of a semi-circular airbag and multiple semi-annular airbags.

[0053] The left side of the multi-stage airbag 3 is connected sequentially to a piezoelectric ceramic rod 1 and a telescopic rod 4, while the right side is connected sequentially to another piezoelectric ceramic rod 1 and another telescopic rod 4. As the vibration of the first pipe on the left increases, the piezoelectric ceramic rod 1 on the left generates an electrical signal and transmits it to the multi-stage airbag 3. Based on the magnitude of the electrical signal (vibration amplitude), the airbags on the left open one by one from the outside in to reduce the pipe vibration. When the pipe amplitude gradually increases, the piezoelectric ceramic rod 1 on the right also generates an electrical signal and transmits it to the multi-stage airbag 3, and the airbags on the right also open one by one to reduce the vibration of the first pipe.

[0054] The piezoelectric ceramic rod 1 is used to generate an electrical signal when the pipeline vibrates and transmit it to the multi-stage airbag 3;

[0055] The multi-mesh perforated plate 2 is used to change the flow direction and non-uniformity of oil and natural gas in the pipe to reform the flow state and reduce the probability of safety accidents.

[0056] The multi-stage airbag 3 is used to receive the electrical signal generated by the piezoelectric ceramic rod 1 and inflate it step by step according to the electrical signal to reduce the vibration of the pipeline.

[0057] The telescopic rod 4 is used to connect the flange and the piezoelectric ceramic rod 1.

[0058] The device for controlling pipeline vibration by acting simultaneously inside and outside the pipe of the present invention can effectively reduce the flow velocity and pressure pulsation of oil and natural gas, reduce impact, reshape the flow state, and change the vibration frequency by setting a multi-mesh perforated plate 2. When the pipeline vibrates, the multi-mesh perforated plate 2 and the damping particles 8 first reduce the pipeline vibration. When the vibration amplitude is too large, the multi-stage airbag 3 is gradually deployed under the excitation of the external piezoelectric ceramic rod 1 and provides resistance to reduce vibration. At the same time, the two pipelines are connected by the rod structure, so that when one pipeline vibrates severely, the vibration can be slowed down by the other pipeline.

[0059] Although the above description uses the welding connection between the multi-mesh perforated plate 2 and the conveying pipeline as an example, the present invention is not limited to this. Various connection methods can be used between the multi-mesh perforated plate 2 and the inner wall of the conveying pipeline, such as an integral molding design. Those skilled in the art can determine the appropriate method based on the connection principle and actual site conditions, as long as a fixed connection between the two can be achieved.

[0060] Welding offers advantages such as strong connections, excellent sealing, high adaptability, low production costs, and wide applicability. Common welding methods include electric arc welding, argon arc welding, submerged arc welding, and laser welding.

[0061] In some embodiments, a first outer pipe is sleeved around the first pipe;

[0062] A plurality of vibration damping cavities 6 are provided circumferentially in the annular space between the first pipe and the first outer pipe;

[0063] A second outer pipe is fitted around the second pipe;

[0064] Several vibration damping cavities 6 are circumferentially arranged in the annular space between the second pipe and the second outer pipe;

[0065] The vibration damping cavity 6 is filled with damping particles 8.

[0066] The vibration damping cavity 6 is used to fill the damping particles 8;

[0067] Damping particles 8 are used to reduce the amplitude of pipeline vibration when the pipeline vibrates.

[0068] like Figure 4 As shown, in some embodiments, the vibration damping cavity 6 includes a plurality of spaced-apart filling grooves;

[0069] The filling groove is filled with damping particles 8.

[0070] In some embodiments, the damping particles 8 are made of materials including iron, lead, lead-tin alloy, copper-based alloy, talc, ceramic, and rubber. For example, the damping particles 8 are iron sand, lead pellets, or steel balls. The damping particles 8 can also be made of composite materials, such as rubber combined with metal and fiber materials, as long as the damping particles 8 have a good damping effect.

[0071] In some embodiments, the first pipe, the first outer pipe, the second pipe, the second outer pipe, and the multi-mesh plate 2 are made of the same material, which can ensure the uniformity of the service life of the device that controls pipe vibration by acting simultaneously inside and outside the pipe, and reduce the probability of the device failing due to the failure of a certain component.

[0072] In some embodiments, the first pipe, the first outer pipe, the second pipe, and the second outer pipe are steel pipes, alloy pipes, aluminized pipes, and fiberglass pipes.

[0073] In some embodiments, the vibration damping cavity 6 between the pipe and the outer pipe is made of materials such as damping rubber, fiberglass (FRP), asbestos fiber, lead-tin alloy, and copper-based alloy, and has elasticity and vibration damping performance. For example, four vibration damping cavities 6 are distributed in the horizontal plane (i.e., located directly to the left and right of the outer walls of the first and second pipes) and the vertical plane (i.e., located directly above and below the outer walls of the first and second pipes), and are filled with damping particles 8.

[0074] Although the above description uses the example of four vibration damping cavities 6 arranged circumferentially in the first or second pipeline as an example, the present invention is not limited thereto. Multiple vibration damping cavities 6 can be provided, such as six, eight, or ten. Those skilled in the art can comprehensively consider the vibration damping principle of the present invention and the actual site conditions, as long as the vibration damping principle of the present invention can be achieved, thus reducing pipeline vibration, it is acceptable.

[0075] In some embodiments, the piezoelectric ceramic rod 1, the telescopic rod 4, and the multi-stage airbag 3 (center) are coaxially arranged. This coaxial arrangement allows for rapid and accurate response to external vibration amplitudes of the pipeline, ensuring that the piezoelectric ceramic rod 1 accurately provides signals to the multi-stage airbag 3, thus quickly and accurately mitigating vibration.

[0076] like Figure 2 As shown, in some embodiments, a plurality of mesh holes 7 are provided on the multi-mesh perforated plate 2; the mesh holes 7 are mounted on the multi-mesh perforated plate 2 with smooth curved surfaces.

[0077] In one embodiment, the multi-mesh plate 2 has 18-23 mesh openings 7. The number of mesh openings 7 is mainly arranged according to the mesh diameter, and they are symmetrically arranged on the multi-mesh plate 2, with gaps between adjacent mesh openings 7. For example, there are 23 mesh openings 7.

[0078] like Figure 3 As shown, the mesh 7 is generally in the shape of a Venturi tube.

[0079] In some embodiments, the thickness of the multi-mesh perforated plate 2 is 1 / 40 to 1 / 30 of the outer diameter of the first or second pipe. For example, the thickness of the multi-mesh perforated plate 2 is 1 / 40 of the outer diameter of the first or second pipe.

[0080] In some embodiments, the outer diameter of the mesh 7 at the inlet or outlet is 1 / 20 to 1 / 17 of the outer diameter of the first or second pipe. For example, the outer diameter of the mesh 7 at the inlet or outlet is 1 / 20 of the outer diameter of the first or second pipe.

[0081] In some embodiments, the inner diameter of the throat of the mesh 7 is 1 / 25 to 1 / 22 of the outer diameter of the first or second pipe (i.e., the minimum inner diameter of the mesh 7, located in the middle of the mesh 7). For example, the inner diameter of the throat of the mesh 7 is 1 / 25 of the outer diameter of the first or second pipe.

[0082] The multi-mesh perforated plate 2, with the above design, can effectively reduce the flow rate and pressure pulsation of oil and natural gas, reduce impact, reform the flow state, and change the vibration frequency.

[0083] In some embodiments, the outer / inner diameters of the first and second pipes are the same.

[0084] It should be noted that the outer / inner diameters of the first and second pipelines can also be designed to be different, which can be done according to the actual needs on site, as long as it can meet the transportation requirements of oil and natural gas.

[0085] In some embodiments, a first flange 5 is fixedly installed around the periphery of the first outer tube;

[0086] A second flange 9 is fixedly installed on the periphery of the second outer pipe.

[0087] A first flange 5 and a second flange 9 are respectively installed on the outer pipe of the oil or natural gas transmission pipeline to connect the adjacent first and second pipelines, which facilitates the disassembly and replacement of the whole device.

[0088] The device for controlling pipeline vibration by acting simultaneously inside and outside the pipe, provided by this invention, operates on the following principle:

[0089] After oil and natural gas enter the pipeline, the flow pattern is reformed by the multi-mesh perforated plate 2 to regulate the flow direction and non-uniformity of the oil and natural gas, thereby reducing the vibration of the pipeline. At the same time, the outer pipe of the pipeline and the vibration damping cavity 6 filled with damping particles 8 suppress the vibration amplitude of the pipeline through the action of damping force. After these two types of pipeline vibration reduction control, excessive vibration will be transmitted to the telescopic rod 4 and the piezoelectric ceramic rod 1 at the connection. The piezoelectric ceramic rod 1 generates an electrical signal under the action of vibration and transmits the electrical signal to the multi-stage airbag 3. The multi-stage airbag 3 is separated in half at the two connecting piezoelectric ceramic rods 1. As the electrical signal gradually increases, the multi-stage airbag 3 opens step by step. When the multi-stage airbag 3 on one side cannot effectively reduce the vibration amplitude, the piezoelectric ceramic rod 1 on the other side is subjected to tension and compression to release an electrical signal. Under the action of the electrical signal, the multi-stage airbag 3 on the other side opens step by step to control the vibration amplitude of the pipeline. In addition, the outer pipe of the conveying pipeline, the vibration damping cavity 6 containing damping particles 8, the telescopic rod 4, the piezoelectric ceramic rod 1, and the multi-stage airbag 3 will change the natural frequency of the pipeline, which will further reduce the probability of safety accidents.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this invention without contradiction.

[0093] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for controlling pipeline vibration by acting simultaneously inside and outside the pipe, characterized in that, include: Piezoelectric ceramic rod (1), multi-mesh plate (2), multi-stage airbag (3), telescopic rod (4), first flange (5), and second flange (9); One end of the retractable rod (4) is connected to the first flange (5), and the other end is connected to one end of the multi-stage airbag (3) through the piezoelectric ceramic rod (1); The other end of the multi-stage airbag (3) is connected to one end of the piezoelectric ceramic rod (1); The other end of the piezoelectric ceramic rod (1) is connected to the second flange (9) via a telescopic rod (4); The multi-mesh perforated plate (2) is disposed inside the first pipe and the second pipe; The first flange (5) is fitted around the first pipe; The second flange (9) is fitted around the second pipe; The first and second pipes are arranged in parallel.

2. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 1, characterized in that, The multi-mesh plate (2) is provided with multiple mesh holes (7); The mesh (7) is generally in the shape of a Venturi tube.

3. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 2, characterized in that, The outer diameter of the mesh (7) at the inlet or outlet is 1 / 20 to 1 / 17 of the outer diameter of the first or second pipe.

4. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 2 or 3, characterized in that, The inner diameter of the throat of the mesh (7) is 1 / 25 to 1 / 22 of the outer diameter of the first or second pipe.

5. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 1 or 2, characterized in that, The thickness of the multi-mesh perforated plate (2) is 1 / 40 to 1 / 30 of the outer diameter of the first or second pipe.

6. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 1, characterized in that, The multi-stage airbag (3) is circular in shape and is divided into a first airbag and a second airbag; The first and second airbags are symmetrical in structure, both being semi-circular; The first or second airbag is composed of a semi-circular airbag and multiple semi-annular airbags.

7. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 1, characterized in that, The first pipe is surrounded by a first outer pipe; A plurality of vibration damping cavities (6) are provided circumferentially in the annular space between the first pipe and the first outer pipe; A second outer pipe is fitted around the second pipe; Several vibration damping cavities (6) are circumferentially arranged in the annular space between the second pipe and the second outer pipe; The damping cavity (6) is filled with damping particles (8); A first flange (5) is fixedly installed on the first outer tube; A second flange (9) is fixedly installed on the second outer pipe.

8. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 7, characterized in that, The vibration damping cavity (6) includes several spaced-apart filling grooves; The filling groove is filled with damping particles (8); The damping particles (8) are made of materials including iron, lead, lead-tin alloy, copper-based alloy, talc, ceramics, and rubber.

9. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 7, characterized in that, The vibration damping cavity (6) is made of materials including rubber, glass fiber, asbestos fiber, lead-tin alloy and copper-based alloy.

10. The device for controlling pipeline vibration by simultaneous action inside and outside the pipe according to claim 7, characterized in that, The first pipe, the first outer pipe, the second pipe, and the second outer pipe are steel pipes, alloy pipes, aluminized pipes, and fiberglass pipes.

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