Multi-gyroscope-high-damping rubber composite energy consumption device for vibration control of large pipeline

Abstract

The invention relates to a multi-gyroscope-high-damping rubber composite energy consumption device for vibration control of a large-scale pipeline, which is suitable for anti-vibration and vibration-reduction protection of a long-distance pipeline. The device comprises a gyroscope control damping device installed outside a pipeline, a polyurethane spring support is connected with the pipeline, and a gyroscope rotor is used for resisting low-frequency vibration; the high-damping rubber layer wrapping the outer wall of the pipeline dissipates 10-500 Hz high-frequency vibration energy through shear deformation; the energy supply unit is composed of a torsional pendulum type multi-direction piezoelectric vibration energy harvester and a photovoltaic power generation panel and is used for cooperatively supplying power to the device; and performing modal optimization arrangement, namely arranging the gyro device at a midspan or 1 / 3 and 2 / 3 span length position. Through integration of gyroscope control, passive energy consumption and energy self-supply, efficient control over broadband and multi-dimensional vibration is achieved, the pipeline vibration displacement response can be remarkably reduced, the fatigue life is prolonged, and the device is suitable for pipeline structure protection in complex environments such as earthquake-prone areas and high wind load areas.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration control, and in particular relates to a multi-gyro-high damping rubber composite energy dissipation device for large-scale pipeline vibration control. Background Art

[0002] With the continuous expansion of projects such as oil and gas transportation, municipal drainage, and chemical transportation, large-scale, long-distance pipeline systems are widely used in various complex environments, such as high wind speed areas and geologically active areas. These environments cause pipelines to not only withstand changes in fluid pulsating pressure during their service life, but also need to withstand multi-directional, multi-frequency vibrations caused by various disturbance sources such as ground vibration, wind load, and foundation settlement. Common vibration characteristics of large pipeline systems include low-frequency, large-amplitude vibrations (such as those caused by seismic waves and fluid fluctuations, with frequencies usually below 10 Hz), high-frequency, small-amplitude vibrations (such as those caused by wind-induced turbulence and mechanical equipment operation, with frequencies reaching tens to hundreds of Hz), multi-dimensional coupled vibrations such as axial, lateral, and torsional vibrations, and fatigue problems caused by local resonance. These complex vibrations often cause stress concentration in weak structural parts of the pipeline, such as joints, support areas, and elbows, leading to early cracks, deformation, and even failure, seriously threatening the overall safety and service life of the pipeline.

[0003] To address pipeline vibration, various technical approaches have been developed, but all have significant limitations. Passive support reinforcement (such as increasing support density and employing rigid constraints) is structurally simple, low-cost, and somewhat effective in suppressing high-frequency vibration. However, its main drawbacks are that it has little effect on controlling low-frequency vibration and may even exacerbate the risk of resonance; it struggles to adapt to the complex, multi-directional vibrations of pipelines; and excessive reinforcement restricts thermal expansion and contraction, introducing additional stress. Traditional passive dampers (such as viscous dampers and tuned mass dampers (TMDs)) are superior to simple supports in dissipating energy, but face significant challenges when applied to large pipelines: a narrow effective control frequency band, poor directional adaptability, large size that makes integration difficult, limited environmental adaptability (e.g., viscous liquids degrade in performance at extreme temperatures), and high maintenance costs. They are particularly difficult to install on curved pipeline surfaces. Wrapped energy-absorbing materials (such as asphalt composites and ordinary rubber layers) are relatively easy to install. However, its damping performance is limited (the damping ratio is usually less than 0.05), it is almost ineffective against low-frequency vibrations, and is greatly affected by the environment (softening at high temperatures, brittleness at low temperatures, and easy aging). It has a short lifespan and is insufficiently responsive to sudden large vibrations (such as earthquakes).

[0004] In summary, existing technologies generally suffer from core shortcomings such as narrow control bandwidth, poor multi-directional adaptability, difficulty integrating with external walls, and insufficient environmental robustness. These limitations make them difficult to meet the comprehensive vibration control needs of large-scale pipeline systems in complex and changing environments. Therefore, there is an urgent need to develop a new composite vibration reduction technology that can be directly attached to the pipeline, combines active and passive vibration control, covers a wide frequency band, adapts to multi-directional vibration, and exhibits good environmental adaptability. Summary of the Invention

[0005] The purpose of the present invention is to meet the omnidirectional vibration control requirements of large-scale pipeline systems in complex and changeable environments, and to propose a multi-gyro-high damping rubber composite energy dissipation device for large-scale pipeline vibration control.

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

[0007] A multi-gyro-high-damping rubber composite energy dissipation device for large-scale pipeline vibration control includes a gyro control device, a torsional pendulum multi-directional piezoelectric vibration energy harvester, a photovoltaic panel, a shear-integrated high-damping rubber layer, a polyurethane spring bracket, an outer structural frame, and an inner structural frame. The gyro control device includes a gyro rotor with a motor, an outer gyro frame, an inner gyro frame, and an inner gyro support shaft. The pendulum multi-directional piezoelectric vibration energy harvester includes a piezoelectric chip, a metal substrate, an elastic beam, a hammer head, a pendulum rod, and a pressure block. The photovoltaic panel includes a highly weather-resistant polymer-based backplane and a single-crystal silicon power generation layer. The shear-integrated high-damping rubber layer includes a base rubber layer, a reinforcing filling layer, and an adhesive layer.

[0008] The gyro control devices are arranged at intervals along the axial direction of the pipeline, and are arranged at the mid-span or 1 / 3 and 2 / 3 span length positions; the gyro control devices are connected to the pipeline through a polyurethane spring bracket.

[0009] The gyro rotor with motor is made of high-strength aluminum alloy or carbon fiber composite material, and its unit mass moment of inertia should be no less than 20% of the overall mass of the gyro. Its rotation axis remains vertical under normal conditions, and the speed range is dynamically adjusted according to control requirements.

[0010] The torsion-pendulum multi-directional piezoelectric vibration energy harvester adopts a torsion-pendulum multi-directional collection structure. For each multi-gyroscope-high damping rubber composite energy dissipation device, the number of piezoelectric chips is not less than 4 and should be tuned according to the main frequency range of pipeline vibration.

[0011] The photovoltaic panels are evenly distributed and installed in the form of patches on the outer surface of the structural outer frame, and their total area should be no less than 50% of the surface area of the gyroscope outer frame; the photovoltaic panel base material is a highly weather-resistant polymer-based backboard and a single-crystal silicon power generation layer structure, which has good flexibility, UV resistance and aging resistance.

[0012] The shear-integrated high-damping rubber layer is used to completely cover the outer surface of the pipe, with a thickness of 1 / 100 to 1 / 80 of the pipe diameter. The rubber layer adopts a layered composite structure, including a basic rubber layer, a reinforced filling layer and an adhesion layer. The thickness ratio of each layer should meet the following requirements: 55% to 65% for the basic rubber layer, 25% to 35% for the reinforced filling layer, and 5% to 15% for the adhesion layer; the basic rubber layer is composited by natural rubber and butyl rubber in a mass ratio of 6:4; the reinforced filling layer contains 10% to 25% nano-SiO2 and 3% carbon nanotube composite filler by mass, and the elastic modulus is controlled within 8MPa; the adhesion layer adopts polyurethane structural adhesive or epoxy modified adhesive, the shear strength is not less than 3MPa, and has good moisture and heat resistance and UV resistance.

[0013] The shear-integrated high-damping rubber layer is made of a natural rubber and butyl rubber composite as the main matrix, supplemented by nano-SiO2 and carbon nanotube reinforcement materials. Its overall damping ratio should be no less than 0.1, the dynamic elastic modulus should be controlled within the range of 1 to 5 MPa, and meet the requirements of effective vibration dissipation in the frequency band above 10 Hz; the rubber layer is adhered to the pipeline by structural adhesive.

[0014] The polyurethane spring bracket is made of polyether polyurethane elastomer material with an elastic modulus of 10 to 50 MPa and a tensile strength of not less than 20 MPa. The bracket height is 0.2 to 0.5 m, and the support width is not less than 1 / 20 of the diameter of the connected pipe. It has good corrosion resistance, fatigue resistance and environmental adaptability.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Wide control bandwidth and strong directional adaptability: The present invention achieves response control of low-frequency and large-amplitude vibrations of 0.5 to 15 Hz through a power-driven gyro device, and cooperates with the high-damping rubber layer to attenuate the energy consumption of high-frequency vibrations of 10 to 500 Hz, thereby constructing a broadband, multi-directional, and multi-modal coupled vibration reduction system, which is significantly superior to the narrow-band response capabilities of traditional passive supports, damping packages or single-frequency TMDs.

[0017] 2. High structural integration and flexible installation: Each functional module adopts an external plug-in design, which is suitable for pipeline structures of different diameters and directions. The installation process does not require destroying the pipeline body, overcoming the problem of viscous dampers, liquid resistance elements, etc. being highly dependent on space and structural forms.

[0018] 3. Energy self-sufficiency and strong adaptability: Through dual energy supply from photovoltaic panels and piezoelectric energy harvesters, an energy self-sustaining system that does not require an external power supply is constructed, which solves the problem of power supply difficulties in field pipelines and improves the environmental adaptability and operational reliability of the system.

[0019] 4. Excellent material performance and long component life: High-damping rubber adopts nano-reinforced composite materials with good elastic modulus, damping ratio and environmental tolerance; the gyro rotor adopts high-strength and lightweight materials to meet the requirements of high-speed operation and structural stability; the polyurethane bracket provides good vibration isolation and corrosion resistance, improving the long-term service capability of the system.

[0020] 5. Significant vibration reduction and low maintenance costs: The system requires no complex commissioning or control, relying solely on structural optimization and energy conversion for continuous operation, resulting in high efficiency and low maintenance. Theoretical analysis and experimental verification have shown that the system can reduce the maximum vibration response of pipelines, extend structural fatigue life, and achieve energy self-sufficiency far superior to existing passive vibration reduction or external energy supply solutions.

[0021] 6. Wide range of applications and high engineering promotion value: The present invention is particularly suitable for the vibration reduction needs of long-distance pipelines such as oil and gas transmission and municipal drainage in complex geological environments such as earthquake zones, high wind load areas and frequent foundation settlements. It has significant engineering adaptability and promotion potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention.

[0023] Figure 2 A three-dimensional schematic diagram of the overall structure of the present invention

[0024] Figure 3 This is the structural diagram of the gyro control device

[0025] Figure 4 The structure diagram of the torsion pendulum multi-directional piezoelectric energy harvester

[0026] Figure 5 Structure diagram of shear-integrated high-damping rubber layer

[0027] Figure 6 Photovoltaic panel structure diagram

[0028] Figure 7 Schematic diagram of the arrangement of the present invention on a full-length pipeline

[0029] The figure shows a gyro control device 1, a torsional pendulum multi-directional piezoelectric vibration energy harvester 2, a photovoltaic panel 3, a shear-integrated high-damping rubber layer 4, a polyurethane spring bracket 5, an outer structural frame 6, an inner structural frame 7, and a pipe body 8. The gyro control device 1 includes a gyro rotor 11 with a motor, an outer gyro frame 12, an inner gyro frame 13, and an inner gyro support shaft 14. The pendulum multi-directional piezoelectric vibration energy harvester 2 includes a piezoelectric chip 21, a metal substrate 22, an elastic beam 23, a hammer 24, a pendulum rod 25, and a pressure block 26. The photovoltaic panel includes a highly weather-resistant polymer-based backsheet 31 and a single-crystal silicon power generation layer 32. The shear-integrated high-damping rubber layer 4 includes a base rubber layer 41, a reinforcing filler layer 42, and an adhesive layer 43. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and embodiments to provide a better understanding of the structure and functional characteristics of the present invention.

[0031] The present invention can be better understood based on the following examples, but it should be pointed out that the examples are only used to illustrate the present invention and are not intended to limit the implementation of the present invention. Ordinary researchers in this field can still make other beneficial changes based on the above description.

[0032] Example 1

[0033] This embodiment provides a multi-gyro-high damping rubber composite energy dissipation device for large-scale pipeline vibration control. Its overall structure is as follows: Figure 1 and Figure 2 As shown. It mainly includes: gyro control device 1 (specific structure as shown Figure 3 As shown), torsion pendulum multi-directional piezoelectric vibration energy harvester 2, photovoltaic power generation panel 3, shear integrated high damping rubber layer 4, polyurethane spring bracket 5, structural outer frame 6, structural inner frame 7. The connection relationship of each component is as follows: the high damping rubber layer 4 covers the outer surface of the pipe body 8 (see Figure 5 Layered structure); one end of the polyurethane spring bracket 5 is fixed to the pipe, and the other end is connected to the gyro control device 1 (see Figure 1 Photovoltaic panels 3 are attached to the outer frame 6 of the structure, such as Figure 6 shown.

[0034] The implementation steps are as follows:

[0035] 1) The target pipeline in this embodiment is a ground oil pipeline with a length of approximately 200 meters and an outer diameter of approximately 2 meters. The operating environment is located in a high-seismic intensity area and is constantly affected by combined disturbances such as seismic waves, wind loads, and fluid fluctuations. To address this operating condition, three sets of multi-gyro-high-damping rubber composite energy dissipation devices are arranged along the pipeline axis, located at the mid-span, 1 / 3 of the span at both ends, and 2 / 3 of the span respectively. A single set of devices covers 360° of the outer wall of the pipeline. Figure 7Each device set includes: a gyro control device, a shear-integrated high-damping rubber layer, a torsion-pendulum multi-directional piezoelectric vibration energy harvester, a photovoltaic power generation component, and a polyurethane spring bracket.

[0036] 2) Gyro control device such as Figure 3 As shown, the system consists of a gyro rotor with a motor, an outer gyro frame, an inner gyro frame, and an inner support shaft connected to the structural inner frame, which is then connected to a polyurethane spring. The gyro rotor with a motor is made of carbon fiber composite material, with a diameter of approximately 0.6 meters and a thickness of 0.15 meters. Its unit mass moment of inertia accounts for approximately 20% of the gyro's mass. During operation, the rotor rotates at a constant speed of approximately 2000 revolutions per second and is arranged vertically to utilize the gyroscopic precession effect to resist horizontal disturbances. Three sets of gyros are symmetrically arranged on the pipeline to effectively control multi-directional low-frequency disturbances.

[0037] 3) The high-damping rubber layer is designed to have a thickness of 1 / 100th the pipe diameter, or approximately 20 mm. It is composed of a natural rubber and butyl rubber composite, supplemented with nano-SiO2 and carbon nanotube reinforcement fillers. The thickness of each layer is as follows: base rubber layer (60%), reinforcing filler layer (30%), and adhesive layer (10%). The overall damping ratio is 0.2, and the elastic modulus is 2.1 MPa. Each high-damping rubber layer is applied to the pipe's outer wall with structural adhesive to ensure interface stability under dynamic loads.

[0038] 4) The piezoelectric vibration energy harvester uses a torsion pendulum multi-directional structure composed of four piezoelectric chips, such as Figure 4 As shown, it is fixedly installed on the side of the base of each group of structural outer frame to recover the structural micro-vibration energy. The obtained electrical energy is stored in the module after rectification.

[0039] 5) Photovoltaic panels are evenly arranged on the exterior of the structural frame in a patch-type arrangement, with an effective light-receiving area covering approximately 60% of the frame's surface area. The photovoltaic units utilize a highly weather-resistant polymer-based backsheet and a monocrystalline silicon layer structure, with daytime power generation sufficient to meet the basic load power of the gyro motor. The combination of piezoelectric and photovoltaic systems creates a complete self-sustaining energy system.

[0040] 6) The polyurethane spring bracket is made of polyether polyurethane elastomer with an elastic modulus of 30 MPa and a tensile strength of 25 MPa. It has a height of 0.4 m and a support width of 0.3 m. It exhibits excellent corrosion resistance, fatigue resistance, and environmental adaptability. The gyro control device is connected to the pipeline via the polyurethane spring bracket.

[0041] 7) During the later operation, vibration sensors can be placed at key locations to obtain real-time vibration response data and make necessary adjustments to the gyro speed and energy module operating status. It is recommended to conduct a comprehensive inspection every 6 months to ensure the integrity and reliability of various parts such as the device bracket, rotor, cable and interface.

[0042] 8) The parameters described in the above embodiments are representative values within the scope of the present claims and are applicable to pipeline structures of similar scale and operating conditions. For pipelines of other types or sizes, the number of gyro devices, parameter values, and material configurations can be flexibly adjusted based on the same design principles to accommodate different application requirements without affecting the scope of protection of this invention.

[0043] 9) Finite element simulation analysis shows that the multi-gyro-high damping rubber composite energy dissipation device can significantly reduce the vibration displacement response of the pipeline, with a vibration reduction rate of more than 30%, extending the fatigue life by more than 50%, and the system energy self-sufficiency rate exceeding 70%. It is indeed suitable for pipeline structure protection in complex environments such as earthquake-prone areas and high wind load areas.

[0044] The above is a typical embodiment of the present invention, but the implementation of the present invention is not limited thereto.

Claims

1. A multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control, characterized by: The invention comprises a gyro control device (1), a torsion pendulum multi-directional piezoelectric vibration energy harvester (2), a photovoltaic power generation panel (3), a shear-integrated high-damping rubber layer (4), a polyurethane spring bracket (5), a structural outer frame (6), and a structural inner frame (7); the gyro control device (1) comprises a gyro rotor (11) with a motor, a gyro outer frame (12), a gyro inner frame (13), and a gyro inner support shaft (14); the pendulum multi-directional piezoelectric vibration energy harvester (2) comprises a piezoelectric chip (21), a metal substrate (22), an elastic beam (23), a hammer head (24), a pendulum rod (25), and a pressure block (26); the photovoltaic power generation panel comprises a high-weather-resistant polymer-based backplane (31) and a single-crystal silicon power generation layer (32); and the shear-integrated high-damping rubber layer (4) comprises a base rubber layer (41), a reinforcement filling layer (42), and an adhesive layer (43).

2. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The gyro control devices (1) are arranged at intervals along the axial direction of the pipeline, at the mid-span or at positions of 1 / 3 and 2 / 3 of the span length; the gyro control devices (1) are connected to the pipeline via a polyurethane spring bracket (5).

3. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The gyro rotor (11) with a motor is made of high-strength aluminum alloy or carbon fiber composite material, and should satisfy the requirement that the unit mass moment of inertia is not less than 20% of the overall mass of the gyro, and its rotation axis remains vertical in a normal state.

4. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The torsion-pendulum multi-directional piezoelectric vibration energy harvester (2) adopts a torsion-pendulum multi-directional collection structure. For each multi-gyro-high damping rubber composite energy dissipation device, the number of piezoelectric chips is not less than 4 and should be tuned according to the main frequency range of pipeline vibration.

5. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The photovoltaic power generation panels (3) are evenly distributed and installed on the outer surface of the structural outer frame (6) in the form of patches, and their total area should be no less than 50% of the surface area of the gyroscope outer frame; the photovoltaic power generation panel base material is a high weather-resistant polymer-based back plate (31) and a single crystal silicon power generation layer structure (32).

6. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The shear-integrated high-damping rubber layer (4) is used to completely cover the outer surface of the pipeline, and its thickness is 1 / 100 to 1 / 80 of the pipeline diameter. The rubber layer adopts a layered composite structure, including a basic rubber layer (41), a reinforced filling layer (42) and an adhesive layer (43). The thickness ratio of each layer should meet the following requirements: 55% to 65% for the basic rubber layer, 25% to 35% for the reinforced filling layer, and 5% to 15% for the adhesive layer; wherein the basic rubber layer (41) is composited with natural rubber and butyl rubber in a mass ratio of 6:4; the reinforced filling layer (42) contains nano-SiO2 and 3% carbon nanotube composite filler in a mass fraction of 10% to 25%, and the elastic modulus is controlled within 8MPa; the adhesive layer (43) adopts a polyurethane structural adhesive or an epoxy modified adhesive, and the shear strength is not less than 3MPa.

7. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The shear-integrated high-damping rubber layer (4) is made of a natural rubber and butyl rubber composite as a main matrix, supplemented by nano-SiO2 and carbon nanotube reinforcement materials, and its overall damping ratio should be no less than 0.1, and the dynamic elastic modulus should be controlled within the range of 1 to 5 MPa, and meet the requirements of effective vibration dissipation in a frequency band above 10 Hz; the rubber layer is adhered to the pipeline by structural adhesive.

8. The multi-gyro-high damping rubber composite energy dissipation device for large pipeline vibration control according to claim 1, characterized in that: The polyurethane spring bracket (5) is made of polyether polyurethane elastomer material, has an elastic modulus of 10-50 MPa, a tensile strength of not less than 20 MPa, a bracket height of 0.2-0.5 m, and a support width of not less than 1 / 20 of the diameter of the connected pipe.

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