Supporting type spring damping device

Abstract

The invention discloses a supporting type spring damping device, and belongs to the technical field of mechanical damping. The device comprises a top plate (1), a threaded connection pipe (2), a tension and compression supporting column (3), an upper pressing plate (4), a spiral compression spring (5), a lower pressing plate assembly (6), a barrel (8), a mounting bottom plate (7), a cover plate (9) and a fixing nut (10). The core of the device is that the spiral compression spring (5) is pre-compressed in an initial state and is limited by the cover plate (9), so that the spring pre-tightening force is internally balanced and is not transmitted to a pipeline by a supporting frame formed by the barrel (8), the mounting bottom plate (7) and the cover plate (9) when no vibration exists, and thus no cold-state additional stress is realized. The installation height and the initial compression amount of the spring can be conveniently adjusted through the threaded connection pipe (2), so that the vibration starting threshold value is changed. The device is compact in structure and good in transverse rigidity, vertical, horizontal and trunnion installation can be carried out, and multi-group matching can be achieved to achieve multi-direction vibration combined control.

Description

Technical Field

[0001] This invention relates to the field of mechanical vibration damping technology, specifically to a support-type spring vibration damping device for suppressing vibrations in pressure vessels and pipeline systems. Background Technology

[0002] In industries such as petrochemicals and power generation, pressure vessels and piping systems often experience harmful vibrations during operation due to fluid dynamics effects, pressure pulsations, or external excitations. Currently widely used tension spring dampers or hydraulic dampers have the following drawbacks: the system consists of multiple components such as pin seats, tension rods, and limiting clamps, resulting in a complex and slender structure, leading to insufficient lateral rigidity and a tendency to resonate in specific frequency bands, resulting in poor damping performance; furthermore, the slender structure is difficult to install in space-constrained locations, limiting its applicability; additionally, some traditional dampers apply additional stress to the pipeline even when cold, increasing the system load.

[0003] Therefore, there is an urgent need in this field for a spring damping device that is compact, rigid, flexible in installation, can effectively suppress multi-directional vibrations, and does not apply additional cold stress when there is no vibration. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a support-type spring damping device to solve the problems of existing damping devices, such as slender structure that is prone to resonance, high installation space requirements, single applicable direction, and cold-state additional stress.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A support-type spring damping device includes: - Top plate, used for connection to pipe or container support; - A threaded connecting pipe that mates with the threaded top plate; - A tension / compression support column passes through the threaded connecting pipe; - The upper pressure plate is fixedly connected to the lower end of the tension and compression support column; - A helical compression spring, sleeved on the outside of the tension / compression support column; - The lower pressure plate assembly is located at the bottom of the helical compression spring; - A cylindrical body that houses the helical compression spring, upper pressure plate, and lower pressure plate assembly; - Install the base plate, which is connected to the bottom of the cylinder; - A cover plate, connected to the top of the cylinder, is used to restrict the upward displacement of the upper pressure plate; - A fixing nut, which engages with the threaded tension / compression support column, is used to lock the position.

[0006] Preferably, the helical compression spring is pre-compressed in the initial state, and its pre-compression amount is limited by the cover plate, so that when there is no external vibration, the preload of the helical compression spring is balanced by the support structure composed of the cylinder, the mounting base plate and the cover plate, and is not transmitted to the top plate.

[0007] Preferably, the lower pressure plate assembly includes a lower pressure plate, an inner support tube, and an inner top plate arranged coaxially. The lower end of the inner support tube is connected to the lower pressure plate, and the upper end is connected to the inner top plate. The lower end of the helical compression spring acts on the inner top plate.

[0008] The working principle of this invention is as follows: - Vertical installation and bidirectional vibration reduction: When the pipeline vibrates upward, the top plate moves the lower pressure plate assembly upward through the tension and compression support column, compressing the helical compression spring, which generates a downward restoring force; when the pipeline vibrates downward, the top plate pushes the upper pressure plate downward, further compressing the helical compression spring, which generates an upward restoring force, thereby achieving bidirectional vibration suppression. - Horizontal installation: The device is arranged laterally to suppress horizontal vibration of the pipeline by utilizing its overall rigidity. - Trunnion mounting: By adding a trunnion structure, the device can be connected to the axial direction of the pipe to suppress axial vibration of the pipe. - Multiple sets of devices: By arranging four or more sets of devices in the circumferential quadrant of the pipeline, it is possible to achieve joint control of the spatial vibration of the pipeline in multiple directions.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Compact structure and high rigidity: It adopts a support structure and cylindrical guide, which has high lateral rigidity and is not prone to resonance. 2. Flexible installation, suitable for small spaces: It abandons the traditional slender strut structure, and the overall structure is compact, requiring less space. 3. Multi-directional vibration damping capability: Through various installation methods such as vertical, horizontal, trunnion and multiple sets of matching, it can effectively suppress vibration in different directions and is applicable to a wide range of scenarios. 4. No additional stress when there is no vibration: The spring preload and internal support structure design ensure that no load is transmitted when the pipeline is in a calm state, reducing the cold stress of the system. 5. Adjustable vibration threshold and sensitive response: The initial compression of the device can be adjusted by adjusting the threaded connecting pipe, which is easy to operate and adaptable to different working conditions. Attached Figure Description

[0010] Figure 1 This is a schematic cross-sectional view of the overall structure of a support-type spring damping device according to the present invention. Figure 2 This is a schematic diagram illustrating the working principle of a support-type spring damping device of the present invention when a pipeline vibrates upward. Figure 3 This is a schematic diagram illustrating the working principle of a support-type spring damping device of the present invention when a pipeline vibrates downwards. Figure 4 This is a schematic diagram of a support-type spring damping device of the present invention, which is mounted with trunnions and horizontally. Figure 5 This is a schematic diagram of a multi-quadrant arrangement of a support-type spring damping device according to the present invention. (In the diagram: 1. Top plate; 2. Threaded connecting pipe; 3. Tension and compression support column; 4. Upper pressure plate; 5. Helical compression spring; 6. Lower pressure plate assembly; 61. Lower pressure plate; 62. Inner support pipe; 63. Inner top plate; 7. Mounting base plate; 8. Cylinder; 9. Cover plate; 10. Fixing nut) Detailed Implementation

[0011] The following detailed description of a support-type spring damping device according to the present invention, with reference to the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0012] like Figure 1 As shown, the present invention provides a support-type spring damping device, comprising a top plate (1), a threaded connecting pipe (2), a tension / compression support column (3), an upper pressure plate (4), a helical compression spring (5), a lower pressure plate assembly (6), a mounting base plate (7), a cylinder (8), a cover plate (9), and a fixing nut (10). The lower pressure plate assembly (6) is composed of a lower pressure plate (61), an inner support pipe (62), and an inner top plate (63) coaxially and fixedly connected.

[0013] The top plate (1) is used to connect to the pipe or container support by welding or bolting. The threaded connecting pipe (2) is threaded to the top plate (1). Rotating the threaded connecting pipe (2) can change the relative height of the top plate (1), thereby realizing stepless adjustment of the installation height of the entire device. The tension and compression support column (3) passes through the threaded connecting pipe (2), and its lower end is fixedly connected to the upper pressure plate (4). The helical compression spring 5 is sleeved on the outside of the tension and compression support column 3. Its upper end acts on the upper pressure plate 4, and its lower end acts on the inner top plate (63) of the lower pressure plate assembly (6). The cylinder (8) is a cylindrical structure with one open end. It houses the helical compression spring (5), the upper pressure plate (4), and the entire lower pressure plate assembly (6), and provides precise guidance for their axial movement, ensuring the stability of the movement of a support-type spring damping device. The mounting base plate (7) is fixedly connected to the closed end (bottom) of the cylinder (8) and is used to install a support-type spring damping device on the foundation support structure. The cover plate (9) is fixedly connected to the open end (top) of the cylinder (8), and together with the mounting base plate (7), it forms the main support frame of the device. The fixing nut (10) engages with the threaded part of the tension and compression support column (3) and is locked after the height adjustment is completed to prevent loosening.

[0014] The aforementioned support-type spring damping device uses a disc spring assembly for the spiral compression spring (5).

[0015] The key design feature is that the helical compression spring (5) is pre-compressed to a certain amount before leaving the factory. This pre-compression is limited by the initial gap (or contact state) between the cover plate (9) and the upper pressure plate (4). The pre-tension force is transmitted to the top plate (1) through the upper pressure plate (4), the tension support column (3), and the threaded connecting pipe (2), but is blocked by the locking action of the fixing nut (10). At the same time, the pre-tension force is finally transmitted to the mounting base plate (7) and the cover plate (9) through the inner top plate (63), the inner support pipe (62), the lower pressure plate (61), and the cylinder (8), forming a closed-loop balance inside a support-type spring damping device. Therefore, when the pipeline is not vibrating, the pre-tension force will not be transmitted to the pipeline as an additional load, achieving "no cold stress".

[0016] During installation, connect the top plate (1) to the pipe and the mounting base plate (7) to the foundation structure. Adjust the support-type spring damping device to the designed installation height by rotating the threaded connecting pipe (2) and tighten the fixing nut (10). If the damping effect is found to be insufficient during operation, the initial compression of the helical compression spring (5) can be changed by fine-tuning the threaded connecting pipe (2), thereby adjusting the device's vibration threshold and dynamic response characteristics.

[0017] Figure 2This is a schematic diagram of the working principle of a support-type spring damping device of the present invention when vibrating on a pipe. When vibrating upward, the deformation Δ+yl=Δ+y2 changes with the change of the restoring force F. Regardless of the vibration direction, the helical compression spring 5 can provide a reverse restoring force D.

[0018] Figure 3 This is a schematic diagram of the working principle of a support-type spring damping device of the present invention when it vibrates downward in a pipe. When vibrating downward, as the restoring force F changes, Δ-y1=Δ-y2. Regardless of the vibration direction, the helical compression spring 5 can provide a reverse restoring force F.

[0019] Figure 4 The invention illustrates a support-type spring damping device arranged axially in two mounting configurations, as well as an application method of direct lateral mounting to suppress horizontal vibrations.

[0020] Figure 5 The invention illustrates a support-type spring damping device with four sets of installation methods arranged in quadrants around the circumference of the pipeline, forming a spatial force system that collectively suppresses complex vibrations of the pipeline in multiple directions.

[0021] Although embodiments of a support-type spring damping device of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support-type spring damping device, characterized in that, include: Top plate (1), for connection to pipe or container support; The threaded connecting pipe (2) is threadedly engaged with the top plate (1); The tension / compression support column (3) passes through the threaded connecting pipe (2); The upper pressure plate (4) is fixedly connected to the lower end of the tension and compression support column (3); A helical compression spring (5) is sleeved on the outside of the tension / compression support column (3); The lower pressure plate assembly (6) is disposed at the bottom of the helical compression spring (5); The cylinder (8) houses the helical compression spring (5), the upper pressure plate (4), and the lower pressure plate assembly (6); The mounting base plate (7) is connected to the bottom of the cylinder (8); The cover plate (9) is connected to the top of the cylinder (8) and is used to limit the upward displacement of the upper pressure plate (4); The fixing nut (10) is threaded into the tension and compression support column (3) to lock the position.

2. The support-type spring damping device according to claim 1, characterized in that, The helical compression spring (5) is pre-compressed in the initial state, and its pre-compression amount is limited by the cover plate (9), so that when there is no external vibration, the pre-tension force of the helical compression spring (5) is balanced by the support structure composed of the cylinder (8), the mounting base plate (7) and the cover plate (9), and is not transmitted to the top plate (1).

3. A support-type spring damping device according to claim 1 or 2, characterized in that, The lower pressure plate assembly (6) includes a lower pressure plate (61), an inner support tube (62), and an inner top plate (63) arranged coaxially. The lower end of the inner support tube (62) is connected to the lower pressure plate (61), and the upper end is connected to the inner top plate (63). The lower end of the helical compression spring (5) acts on the inner top plate (63).

4. The support-type spring damping device according to claim 1, characterized in that, The cylinder (8) is a cylindrical structure, and its inner wall cooperates with the outer periphery of the upper pressure plate (4) and the lower pressure plate assembly (6) to provide guidance for their axial movement.

5. A support-type spring damping device according to claim 1, characterized in that, The height of the top plate (1) relative to the body (8) is adjusted by rotating the threaded connecting pipe (2), thereby changing the initial compression of the helical compression spring (5) and realizing the on-site adjustment of the device's vibration threshold.

6. The support-type spring damping device according to claim 1, characterized in that, The device is configured to be installed vertically, and through the cooperation of the tension support column (3) and the helical compression spring (5), it simultaneously suppresses bidirectional vibration of the pipeline in both upward and downward directions.

7. A support-type spring damping device according to claim 1, characterized in that, The helical compression spring (5) can be a disc spring assembly.

8. A support-type spring damping device according to claim 1, characterized in that, The device is configured to be installed horizontally to suppress horizontal vibrations in the pipeline.

9. A support-type spring damping device according to claim 1, characterized in that, It also includes a trunnion, which is disposed on the cylinder (8) or the mounting base plate (7) so that the device can be connected by trunnion mounting to suppress axial vibration of the pipeline.

10. A support-type spring damping device according to claim 1, 8, or 9, characterized in that, The aforementioned support-type spring damping device is configured in multiple groups and arranged in quadrants or symmetrically around the pipeline to jointly suppress multi-directional vibrations of the pipeline.

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