Pipeline vibration reduction damper capable of consuming energy in stages

Abstract

The utility model discloses a pipeline vibration damper with staged energy dissipation, which belongs to the technical field of petrochemical engineering pipeline energy dissipation and vibration reduction and comprises a viscous damping chamber and a metal damping chamber, the metal damping chamber is nested on the outer wall of a pipeline, friction plate groups are arranged on two sides of the viscous damping chamber, the tops of the friction plate groups are connected with a friction top plate, and the friction top plate is connected with the metal damping chamber. The viscous damping cavity penetrates through the friction top plate through the pulling and pressing plate to be connected with the top plate. The top plate and the metal damping cavity are fixedly connected through a connecting pipe fitting. Staged energy dissipation and vibration reduction can be achieved, the energy dissipation path is actively adjusted according to the vibration amplitude, and the remarkable energy dissipation and vibration reduction effect can be achieved for different amplitudes and frequencies.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy dissipation and vibration reduction of petrochemical pipelines, and relates to a pipeline vibration reduction damper that dissipates energy in stages. Background Art

[0002] Reciprocating plunger pumps are critical equipment in the core petrochemical industry, and their operational stability directly impacts the efficiency and safety of the entire water injection system. However, during operation, these pumps often experience severe vibrations in the pump itself and its associated pipelines due to uneven discharge pressure, particularly in the discharge pipeline and high-pressure water distribution valve area. The vibration amplitude often exceeds the safety threshold specified in the design specifications. This vibration not only exacerbates noise pollution at the production site and poses a threat to the physical and mental health of operators, but more importantly, it can severely damage the structural integrity of the piping system over the long term, potentially causing fatigue damage to the pipeline material, cracking of the pipe rack foundation, and even failure of the entire support structure, threatening the safe and stable operation of the entire production process.

[0003] To address this issue, a vibration reduction measure using metal particles to dissipate energy and dampen vibrations is currently being implemented in oilfield pipelines. This measure can reduce pipeline vibration and reduce noise. Specifically, under high water pressure, pipeline vibration amplitude increases dramatically. While metal particles can be effective, the effect is limited, making it difficult to effectively curb the increase in amplitude. In some extreme cases, the damping structure itself can even be damaged by excessive stress, exacerbating potential damage to the piping system and supporting structures.

[0004] Therefore, how to improve the vibration reduction and energy dissipation effect of pipelines under different degrees of vibration, so that the vibration reduction structure will not suffer fatigue damage under high-frequency and low-amplitude vibration, and at the same time be able to effectively dissipate energy and reduce vibration when encountering low-frequency and high-amplitude vibration and ensure the safety of the vibration reduction equipment, is a problem that the existing technology needs to solve. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline vibration damper with phased energy consumption, which can meet the vibration reduction needs of pipelines under different amplitudes and frequencies, set up multiple energy consumption lines, and gradually dissipate energy and reduce vibration to overcome the shortcomings of the existing technology that the pipeline amplitude is large when the pressure of the water outlet pipe is large, the noise reduction and vibration reduction effects of the vibration reduction equipment are not very significant, and when the amplitude is too large, the vibration reduction structure itself will be damaged, causing damage to structural components such as pipeline supports and pipeline foundations.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] A pipeline vibration damper with staged energy consumption includes a viscous damping chamber and a metal damping chamber. The metal damping chamber is nested on the outer wall of the pipeline. Friction plate groups are arranged on both sides of the viscous damping chamber. The top of the friction plate group is connected to the friction top plate. The viscous damping chamber is connected to the top plate through a tension and compression plate passing through the friction top plate; the top plate and the metal damping chamber are fixedly connected by a connecting pipe.

[0008] Furthermore, the viscous damping chamber is fixedly enclosed by viscous chamber side panels and a viscous chamber enclosure, with the top fixedly connected to the viscous chamber top plate and the bottom fixedly connected to the bottom plate. A piston plate is disposed within the viscous damping chamber, dividing the chamber into upper and lower compartments. The piston plate is movable within the viscous damping chamber, and the lower compartment is filled with viscous liquid. The piston plate is connected to the top plate via a tension and compression plate. When vibration transmitted from the pipeline is relatively low, the pipeline drives the piston plate downward through the connecting pipe and the top plate, thereby squeezing the viscous liquid. The viscous liquid flows into the upper compartment of the chamber through the piston hole. As the viscous liquid passes through the piston hole, it generates frictional damping force, dissipating energy and achieving a vibration reduction effect.

[0009] Furthermore, the friction top plate and the viscous chamber top plate are provided with holes, and the tension and pressure plate includes a first tension and pressure plate, a second tension and pressure plate and a third tension and pressure plate. One end of the first tension and pressure plate, the second tension and pressure plate and the third tension and pressure plate are connected to the piston plate and the other end is connected to the top plate through the holes of the viscous chamber top plate and the friction top plate.

[0010] Furthermore, a plurality of piston holes are provided on the piston plate.

[0011] Furthermore, the friction plate group includes an upper friction plate, with left and right friction plates disposed on its left and right sides. A left friction pad is disposed between the upper and left friction plates, and a right friction pad is disposed between the upper and right friction plates. When the vibration amplitude is large, the pipeline drives the piston plate downward through the connecting pipe and the top plate, causing the top plate to contact the friction top plate, pushing the friction top plate downward. At this time, friction is generated between the upper friction plate and the right and left friction pads, thereby dissipating energy and reducing vibration.

[0012] Furthermore, the upper friction plate, right friction plate, right friction washer, left friction plate, and left friction washer are connected by bolt fasteners, with gaps left between the bolt fasteners and the friction plates. The pressure between the friction plates can be determined by adjusting the bolt preload, thereby adjusting the friction force during friction and achieving different levels of friction energy dissipation.

[0013] Furthermore, the metal damping chamber is divided into an upper arc chamber and a lower arc chamber, both of which are filled with metal particles. When the pipeline vibrates, the metal particles collide with the inner wall of the metal damping chamber, consuming energy through collision and friction.

[0014] Furthermore, the upper arc chamber and the lower arc chamber are connected by bolts, and a plurality of bolt holes are provided on the bottom plate; the damper can be modularly prefabricated in batches in a factory and assembled and connected on site, which greatly improves the construction speed.

[0015] Furthermore, the top plate and the friction top plate are made of Q345 steel.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This utility model provides a pipeline vibration damper with phased energy dissipation, which can meet the vibration reduction requirements of pipelines under different amplitudes and frequencies. It sets multiple energy dissipation lines to gradually dissipate energy and reduce vibration. The energy dissipation path is actively adjusted according to the vibration amplitude, achieving significant energy dissipation and vibration reduction effects for different amplitudes and frequencies. When the pipeline amplitude is small, the viscous damping chamber and the metal damping chamber provide vibration reduction. When the pipeline amplitude is large, the viscous damping chamber, the metal damping chamber, and the friction plate group provide vibration reduction. This utility model adopts different vibration reduction methods for different vibration levels, so that the vibration reduction structure will not suffer fatigue damage under high-frequency, low-amplitude vibration, while effectively dissipating energy and reducing vibration when encountering low-frequency, high-amplitude vibration, ensuring the safety of the vibration reduction equipment.

[0018] Specifically, when the pipeline vibration amplitude is small, the metal particles in the metal damping chamber collide with the chamber wall, dissipating energy and reducing vibration. Furthermore, the pipeline vibration drives the connecting pipe and top plate downward, which in turn drives the piston plate downward, squeezing the viscous liquid. The viscous liquid flows through the piston hole into the upper space of the chamber. As the viscous liquid passes through the piston hole, it generates frictional damping force, thereby dissipating energy and achieving a vibration reduction effect. When the pipeline vibration amplitude is large, the pipeline, through the connecting pipe and top plate, drives the piston plate downward, causing a large displacement. At this time, the viscous damping chamber and the metal damping chamber provide vibration reduction, while the top plate contacts the friction top plate, pushing it downward. The upper friction plate generates friction with the right and left friction pads, dissipating energy and reducing vibration. The damper's vibration reduction effect can be adjusted by adjusting the metal material, particle diameter, and particle density of the metal particles in the metal damping chamber. The friction plate group is provided with bolt fasteners, and the tightening of the bolts can be adjusted to adjust the preload between the friction plates, achieving different degrees of friction energy dissipation.

[0019] Specifically, the connecting pipe fittings are made of waste pipes from oil field stations, which are reused to achieve the effect of cost saving and green environmental protection.

[0020] Specifically, the upper arc-shaped chamber and the lower arc-shaped chamber are connected by bolts, and a plurality of bolt holes are provided on the bottom plate; the damper can be prefabricated in batches in a factory and assembled on site, which greatly improves the construction speed. The pipeline is assembled with the damper, which is convenient for construction and also easy to repair quickly after damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a pipeline vibration damper with phased energy consumption in an embodiment of the present utility model.

[0022] Figure 2 This is a specific schematic diagram of the viscous damping chamber of a pipeline vibration damper with staged energy consumption in an embodiment of the present utility model.

[0023] Figure 3 This is a schematic diagram of the connection of a friction plate group of a pipeline vibration damper with staged energy consumption in an embodiment of the present utility model.

[0024] Figure 4 This is a schematic diagram of a friction plate group of a pipeline vibration damper with staged energy consumption in an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of a metal damping chamber of a pipeline vibration damper with staged energy consumption in an embodiment of the present utility model.

[0026] In the figure, 1. viscous damping chamber; 2. friction plate group; 3. metal damping chamber; 4. pipeline; 5. connecting pipe; 6. top plate; 7. friction top plate; 8. bottom plate; 1-1-1. first tension and pressure plate; 1-1-2. second tension and pressure plate; 1-1-3. third tension and pressure plate; 1-2. viscous chamber top plate; 1-3. viscous chamber side plate; 1-4. piston plate; 1-5. piston hole; 1-6. viscous liquid; 1-7. viscous chamber enclosure; 2-1. upper friction plate; 2-2-1. right friction plate; 2-2-2. right friction gasket; 2-3-1. left friction plate; 2-3-2. left friction gasket; 2-4. bolt fastener; 3-1. upper arc chamber; 3-2. lower arc chamber; 3-3. bolt; 3-4. metal particles; 8. bottom plate; 8-1. bolt hole. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Example 1

[0030] A pipeline vibration damper with staged energy consumption includes a viscous damping chamber 1 and a metal damping chamber 3. The metal damping chamber 3 is nested on the outer wall of a pipeline 4. Friction plate groups 2 are provided on both sides of the viscous damping chamber 2. The top of the friction plate group 2 is connected to a friction top plate 7. The viscous damping chamber 1 is connected to the top plate 6 through a tension and compression plate passing through the friction top plate 7; the top plate 6 and the metal damping chamber 3 are fixedly connected by a connecting pipe 5. The top plate 6 and the friction top plate 7 are made of Q345 steel. When the pipeline amplitude is small, the viscous damping chamber 1 and the metal damping chamber 3 perform vibration reduction. When the pipeline amplitude is large, the viscous damping chamber 1, the metal damping chamber 3 and the friction plate group 2 perform vibration reduction.

[0031] Example 2

[0032] On the basis of Example 1, the viscous damping chamber 1 is fixedly surrounded by viscous chamber side plates 1-3 and viscous chamber enclosure plates 1-7, and the top is fixedly connected to the viscous chamber top plate 1-2, and the bottom is fixedly connected to the bottom plate 8; a piston plate 1-4 is provided inside the viscous damping chamber 1 to divide the chamber into two spaces, upper and lower. The piston plate 1-4 can move inside the viscous damping chamber 1, and the lower space of the chamber is filled with viscous liquid 1-6. The piston plate 1-4 is connected to the top plate 6 through the tension and compression plate. The friction top plate 7 and the viscous chamber top plate 1-2 are provided with holes, and the tension and pressure plate includes a first tension and pressure plate 1-1-1, a second tension and pressure plate 1-1-2 and a third tension and pressure plate 1-1-3. One end of the first tension and pressure plate 1-1-1, the second tension and pressure plate 1-1-2 and the third tension and pressure plate 1-1-3 is connected to the piston plate 1-4, and the other end passes through the holes of the viscous chamber top plate 1-2 and the friction top plate 7 and is connected to the top plate 6; the piston plate 1-4 is provided with a plurality of piston holes 1- 5. When the piston plate 1-4 moves downward, the viscous liquid 1-6 in the lower space of the chamber can move from the piston hole 1-5 to the upper space of the chamber, thereby dissipating energy and reducing vibration; the friction plate group 2 includes an upper friction plate 2-1, and a left friction plate 2-3-1 and a right friction plate 2-2-1 are provided on the left and right sides of the upper friction plate 2-1. A left friction pad 2-3-2 is provided between the upper friction plate 2-1 and the left friction plate 2-3-1, and the upper friction plate 2-1 and the right friction plate 2-2-1 are provided. A right friction pad 2-2-2 is disposed between the plates 2-2-1. The upper friction plate 2-1, right friction plate 2-2-1, right friction pad 2-2-2, left friction plate 2-3-1, and left friction pad 2-3-2 are connected by bolt fasteners 2-4. Gaps are left between the bolt fasteners 2-4 and the friction plates. Adjusting the tightness of the bolt fasteners 2-4 adjusts the preload between the friction plates, achieving varying degrees of friction energy dissipation. The metal damping chamber 3 is divided into an upper arc-shaped chamber 3-1 and a lower arc-shaped chamber 3-2. Both the upper arc-shaped chamber 3-1 and the lower arc-shaped chamber 3-2 are filled with metal particles 3-4. The upper arc-shaped chamber 3-1 and the lower arc-shaped chamber 3-2 are connected by bolts 3-3. Multiple bolt holes 8-1 are provided on the bottom plate 8. The top plate 6 and the friction top plate 7 are made of Q345 steel.

[0033] This utility model provides a pipeline vibration damper with phased energy dissipation. It achieves phased energy dissipation and vibration reduction by actively adjusting the energy dissipation path based on the vibration amplitude, achieving significant energy dissipation and vibration reduction effects for various amplitudes and frequencies. Furthermore, the pipe connectors utilize waste oilfield station oil pipes, which is environmentally friendly, reduces costs, and increases efficiency. The damper achieves an assembled connection to the pipeline, facilitating rapid repair after damage, and has a wide range of applications.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A pipeline vibration damper with phased energy consumption, characterized in that: The invention comprises a viscous damping chamber (1) and a metal damping chamber (3), wherein the metal damping chamber (3) is nested on the outer wall of the pipeline (4), friction plate groups (2) are arranged on both sides of the viscous damping chamber (1), the top of the friction plate group (2) is connected to the friction top plate (7), and the viscous damping chamber (1) is connected to the top plate (6) through the tension and pressure plate passing through the friction top plate (7); the top plate (6) and the metal damping chamber (3) are fixedly connected by a connecting pipe (5).

2. The pipeline vibration damper with phased energy dissipation according to claim 1, characterized in that: The viscous damping chamber (1) is fixedly surrounded by viscous chamber side plates (1-3) and viscous chamber enclosure plates (1-7), and the top is fixedly connected to the viscous chamber top plate (1-2), and the bottom is fixedly connected to the bottom plate (8); a piston plate (1-4) is provided inside the viscous damping chamber (1) to divide the chamber into two upper and lower spaces; the piston plate (1-4) can move inside the viscous damping chamber (1); the lower space of the chamber is filled with viscous liquid (1-6), and the piston plate (1-4) is connected to the top plate (6) through a tension and compression plate.

3. The pipeline vibration damper with staged energy dissipation according to claim 2, characterized in that: The friction top plate (7) and the viscous cavity top plate (1-2) are provided with holes, and the tension and pressure plates include a first tension and pressure plate (1-1-1), a second tension and pressure plate (1-1-2), and a third tension and pressure plate (1-1-3). One end of the first tension and pressure plate (1-1-1), the second tension and pressure plate (1-1-2), and the third tension and pressure plate (1-1-3) are connected to the piston plate (1-4), and the other end passes through the holes of the viscous cavity top plate (1-2) and the friction top plate (7) and is connected to the top plate (6).

4. The pipeline vibration damper with phased energy consumption according to claim 2, characterized in that: A plurality of piston holes (1-5) are provided on the piston plate (1-4).

5. The pipeline vibration damper with phased energy dissipation according to claim 1, characterized in that: The friction plate group (2) comprises an upper friction plate (2-1), a left friction plate (2-3-1) and a right friction plate (2-2-1) are arranged on the left and right sides of the upper friction plate (2-1), a left friction pad (2-3-2) is arranged between the upper friction plate (2-1) and the left friction plate (2-3-1), and a right friction pad (2-2-2) is arranged between the upper friction plate (2-1) and the right friction plate (2-2-1).

6. The pipeline vibration damper with phased energy dissipation according to claim 5, characterized in that: The upper friction plate (2-1), the right friction plate (2-2-1), the right friction pad (2-2-2), the left friction plate (2-3-1) and the left friction pad (2-3-2) are connected via bolt fasteners (2-4), with gaps being left between the bolt fasteners (2-4) and the friction plates.

7. The pipeline vibration damper with phased energy dissipation according to claim 1, characterized in that: The metal damping chamber (3) is divided into an upper arc-shaped chamber (3-1) and a lower arc-shaped chamber (3-2), and both the upper arc-shaped chamber (3-1) and the lower arc-shaped chamber (3-2) are filled with metal particles (3-4).

8. The pipeline vibration damper with staged energy dissipation according to claim 7, characterized in that: The upper arc-shaped chamber (3-1) and the lower arc-shaped chamber (3-2) are connected via bolts (3-3).

9. The pipeline vibration damper with phased energy dissipation according to claim 2, characterized in that: A plurality of bolt holes (8-1) are provided on the bottom plate (8).

10. The pipeline vibration damper with staged energy dissipation according to claim 1, characterized in that: The top plate (6) and the friction top plate (7) are made of Q345 steel.

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