CN216896122U

CN216896122U - Dynamic vibration absorber suitable for high-temperature pipeline

Info

Publication number: CN216896122U
Application number: CN202220054863.7U
Authority: CN
Inventors: 任志英; 朱怀文; 李振; 秦红玲; 白鸿柏
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-07-05
Anticipated expiration: 2032-01-11

Abstract

The invention relates to a dynamic vibration absorber suitable for a high-temperature pipeline, which comprises a mass ring and pipe clamps, wherein the pipe clamps are arranged in the mass ring, the periphery of each pipe clamp is connected with the inner wall of the mass ring through a plurality of damping components uniformly distributed on the circumference, springs are arranged along the pipe clamps, and mass sheets are symmetrically arranged on the mass ring; the damping component is at least one of a spring or metal rubber; at least one of the mass sheets arranged in a stack; the vibration problem of high temperature pipeline when the transportation gas produces the pulsation has been solved to this bump leveller, bump leveller simple structure, and the quality accessible increases and decreases the quality piece and finely tune, when realizing the pipeline function of shaking, has reduced the potential safety hazard that loses the production easily because of spare part when changing the maintenance, and the bump leveller quality can be adjusted in certain extent to the operating condition of the frequency pipeline is inhaled in the adaptation difference.

Description

Dynamic vibration absorber suitable for high-temperature pipeline

Technical Field

The invention relates to the technical field of vibration reduction, in particular to a dynamic vibration absorber suitable for a high-temperature pipeline.

Background

With the development of society, energy problems have become a big problem restricting global development, and the development of clean energy has become a necessary development trend. In the engineering, a plurality of pipelines for transporting high-temperature gas exist in equipment such as nuclear power, medium petroleum, medium petrochemical industry and the like, and play a role in running various operation units. However, pressure pulsation is generated due to unsmooth gas transportation, so that the pipeline is vibrated, severe vibration can influence the operation safety of the nuclear power station, the nuclear power station is stopped, and the production efficiency is reduced. Therefore, the method has important engineering significance for reducing the vibration of the high-temperature pipeline by adopting an effective method.

The current common solution is to reduce the vibration amplitude by applying constraints, for example, connecting the pipe with large amplitude to the fixed base through a high-strength steel cable, and rigidly limiting the pipe through the steel cable to suppress the vibration. Although this has a certain effect, there is still a certain risk that long-term vibration suppression may cause the steel cable to break due to fatigue, the steel cable may vibrate along with the pipeline when failure occurs, which greatly threatens the operation safety of the unit, and for some pipelines with larger rigidity, the resonance is usually generated at high frequency, and the displacement amplitude is smaller, and the general steel cable constraint has no good effect on the vibration suppression.

Because the vibration of the high-temperature pipeline is mainly generated by the pulsation of high-temperature internal gas, the common vibration isolator cannot form an effective vibration reduction interlayer between the gas and the inner wall of the pipeline. Therefore, the vibration energy is transferred and dissipated by adopting the dynamic vibration absorber, which becomes a scheme with higher feasibility at present. However, the pipeline is complicated, if the structure of the dynamic vibration absorber is too complex, difficulty is caused when the dynamic vibration absorber is installed and maintained, parts are easy to lose, and potential safety hazards are caused to the operation of a unit.

Disclosure of Invention

Aiming at the defects, the invention provides the dynamic vibration absorber suitable for the high-temperature pipeline to solve the problem of vibration of the high-temperature pipeline when the transportation gas generates pulsation.

The technical scheme for solving the technical problem is that the dynamic vibration absorber suitable for the high-temperature pipeline comprises a mass ring and pipe clamps, wherein the pipe clamps are arranged in the mass ring, the periphery of each pipe clamp is connected with the inner wall of the mass ring through a plurality of damping assemblies which are uniformly distributed on the periphery of each pipe clamp, springs are arranged along the pipe clamps, and mass sheets are symmetrically arranged on the mass ring.

Further, the damping component is at least one of a spring or metal rubber, and when the damping component is composed of the spring and the metal rubber, the spring is sleeved outside the metal rubber.

Further, the quality sheet is stacked by at least one sheet.

Furthermore, the mass plate groups are arranged at the bottom end and the top end of the mass ring.

Furthermore, the middle parts of the bottom end and the top end of the mass ring are radially provided with bolt holes, and the mass plate is locked on the mass ring through the bolts.

Further, the pipe clamp comprises an upper pipe clamp and an upper pipe clamp which have the same structure.

Further, the mass ring comprises an upper mass ring and an upper mass ring with the same structure.

Compared with the prior art, the invention has the following beneficial effects: the problem of the vibration of high temperature pipeline when the transportation gas produces the pulsation is solved, bump leveller simple structure, quality accessible increase and decrease quality piece finely tune, when realizing the pipeline function of shaking, has reduced the potential safety hazard of losing the production easily because of spare part when changing the maintenance, and the bump leveller quality can be adjusted at the certain limit to the operating condition of the different vibration absorption frequency pipelines of adaptation.

Drawings

The invention is further described with reference to the following figures.

Fig. 1 is a first schematic structural diagram of the vibration absorber.

Fig. 2 is a schematic structural diagram of the vibration absorber.

Fig. 3 is a schematic view of the structure of the upper mass ring.

Fig. 4 is a schematic structural view of the upper pipe clamp.

FIG. 5 is a schematic view of a mass plate structure

In the figure: 1-a spring; 2-mass sheet nut; 3-mass tablets; 4-mass ring; 5, an upper pipe clamp; 6-lower pipe clamp; 7-a metal rubber column; 8-lower mass ring; 9-mass plate bolt; 10-positioning a sink; 11-stud bumps; 12-a notch.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-5, a dynamic vibration absorber suitable for high temperature pipelines comprises a mass ring and a pipe clamp, wherein the pipe clamp is arranged in the mass ring, the periphery of the pipe clamp is connected with the inner wall of the mass ring through a plurality of springs 1 uniformly distributed on the circumference, the springs are arranged along the pipe clamp, mass plate groups are symmetrically arranged on the mass ring, each mass plate group consists of at least one mass plate 3 which is stacked, a metal rubber column 7 is sleeved in each spring, two ends of each metal rubber column are respectively connected with the mass ring and the pipe clamp, the metal rubber and the springs are connected in parallel to be used as a rigidity element and a damping element of the dynamic vibration absorber, and the high temperature resistance of the metal rubber is utilized to realize that the dynamic vibration absorber still has better vibration absorption performance under the condition of higher temperature of the pipeline and has longer service life compared with other elastic elements;

the mass can be finely adjusted by increasing or decreasing the mass pieces, so that the dynamic vibration absorber with the same specification can change the vibration absorption frequency by increasing or decreasing the mass to be used in pipeline environments with different vibration frequencies.

In this embodiment, four springs are provided.

In this embodiment, the mass plate sets are disposed at the bottom end and the top end of the mass ring, and the mass plate sets are disposed between two adjacent springs on the same side.

In this embodiment, the middle of the bottom end and the top end of the mass ring are radially provided with bolt holes, the mass plate is provided with notches 12 correspondingly matched with the bolt holes, and the mass plate is locked on the mass ring through bolts 9 penetrating the notches and the bolt holes; the design of notch realizes under the condition of not demolising any part, realizes the increase and decrease of quality piece through unscrewing the bolt, the nut of locking quality piece word, can realize the increase and decrease of quality piece under the condition of not demolising arbitrary part of dynamic vibration absorber, makes things convenient for the staff to carry out follow-up adjustment to dynamic vibration absorber.

In this embodiment, the inner wall of the mass ring and the outer wall of the pipe clamp are both provided with a positioning sinking groove 10 for accommodating the end part of the spring, and the end part of the metal rubber column is arranged at the bottom of the sinking groove.

In this embodiment, the middle of the bottom of the positioning sink is provided with a cylindrical protrusion 11, the end of the spring is sleeved on the cylindrical protrusion, and the end of the metal rubber column is connected with the end face of the cylindrical protrusion.

In this embodiment, the inner wall of the mass ring and the outer wall of the pipe clamp are provided with positioning sunken grooves, which are provided with reinforcing protrusions, and the positioning sunken grooves are arranged on end surfaces of the reinforcing protrusions.

In this embodiment, the pipe clamp includes the same last pipe clamp 5 of structure, goes up pipe clamp 6, goes up pipe clamp, goes up the pipe clamp both ends and all is provided with the pipe clamp engaging lug, goes up the pipe clamp engaging lug that corresponds on the pipe clamp and is connected through the bolt.

In this embodiment, the quality ring includes that the structure is the same goes up quality ring 4, goes up quality ring 8, goes up quality ring both ends and all is provided with the engaging lug, goes up quality ring, goes up the engaging lug that corresponds on the quality ring and connects through the bolt.

The assembling method of the high-temperature pipeline vibration absorber comprises the following steps of;

the method comprises the following steps: the arc surfaces in the upper pipe clamp and the lower pipe clamp are tightly attached to the surface of a pipeline, and then the upper pipe clamp is connected with the two sides of the lower pipe clamp through bolts and nuts; a gap is reserved between the upper pipe clamp and the lower pipe clamp, and allowance is reserved to enable the pipe clamp to deform under the extrusion of a bolt and a nut, so that the pipe clamp is fixed on a pipeline;

step two: firstly, a spring and metal rubber are arranged on a pipe clamp, then a mass ring and an upper mass ring are arranged outside the pipe clamp, and then the mass ring is connected with the two sides of the mass ring through bolts and nuts;

step three: according to the requirement, a plurality of mass sheets which are stacked are locked at the upper end and the lower end of the mass ring through bolts.

If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be suitable for dynamic vibration absorber of high temperature pipeline which characterized in that: including quality ring, pipe clamp, the pipe clamp sets up in the quality ring, and the pipe clamp periphery is connected with quality ring inner wall through a plurality of damper assembly of circumference equipartition, and the spring is arranged along the pipe clamp, the last symmetry of quality ring is installed the quality piece.

2. The dynamic vibration absorber suitable for high-temperature pipelines according to claim 1, wherein: the damping assembly is at least one of a spring or metal rubber, and when the damping assembly is formed by the spring and the metal rubber together, the spring is sleeved outside the metal rubber.

3. The dynamic vibration absorber suitable for high-temperature pipelines according to claim 1, wherein: the mass plate group is arranged at the bottom end and the top end of the mass ring.

4. The dynamic vibration absorber applicable to high-temperature pipelines according to claim 3, wherein: the middle parts of the bottom end and the top end of the mass ring are radially provided with bolt holes, and the mass sheet is locked on the mass ring through the bolts.

5. The dynamic vibration absorber suitable for high-temperature pipelines according to claim 1, wherein: the pipe clamp comprises an upper pipe clamp and an upper pipe clamp which have the same structure.

6. The dynamic vibration absorber suitable for high-temperature pipelines according to claim 1, wherein: the mass ring comprises an upper mass ring and an upper mass ring which have the same structure.