CN115654254A - Disc spring type metamaterial low-frequency vibration isolation pipeline and connecting system based on pipeline - Google Patents
Disc spring type metamaterial low-frequency vibration isolation pipeline and connecting system based on pipeline Download PDFInfo
- Publication number
- CN115654254A CN115654254A CN202211407005.7A CN202211407005A CN115654254A CN 115654254 A CN115654254 A CN 115654254A CN 202211407005 A CN202211407005 A CN 202211407005A CN 115654254 A CN115654254 A CN 115654254A
- Authority
- CN
- China
- Prior art keywords
- disc
- pipeline
- limiting ring
- ring
- disc spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
A disc spring type metamaterial low-frequency vibration isolation pipeline and a connecting system based on the pipeline belong to the technical field of seawater pipelines. The invention aims at solving the problem that the existing seawater pipeline can not realize vibration reduction and noise reduction under the condition of meeting the internal pressure bearing. The vibration isolation pipeline includes: the main body framework comprises a disc spring structure formed by sequentially connecting a plurality of disc-shaped unit cells, and each disc-shaped unit cell comprises two disc-shaped single bodies; the outer contour of each disc-shaped single body is in a circular truncated cone shape and is provided with a large port and a small port; the small ports of the two disc-shaped single bodies are butted to form a disc-shaped unit cell; and soft sound insulation layers are respectively filled on the inner surface and the outer surface of the disc spring structure to form a cylindrical structure of the main body framework. The invention is used in seawater pipeline structures with internal fluid pressure.
Description
Technical Field
The invention relates to a disc spring type metamaterial low-frequency vibration isolation pipeline and a pipeline-based connecting system, and belongs to the technical field of seawater pipelines.
Background
With the development of scientific technology and the improvement of human living standard, a large number of pump structures are used in ship systems such as submarines and the like, and pipeline conveying is used as a key connecting link of the pump structures in the field of ships and warships in a large number.
Due to the effect of the fluid flow rate, the pipeline can generate vibration and noise problems during the process of conveying the energy medium. The flow-induced vibration and flow-induced noise of such piping systems will adversely affect the piping transport stability. The design of the existing pipeline can not give consideration to the dual requirements of vibration reduction and bearing, and can not meet the use in engineering practice.
Therefore, under the condition of meeting the internal pressure bearing of the pipeline system, the design of vibration and noise reduction can be carried out, and the key link for guaranteeing the energy transmission stability of the ship seawater pipeline system is formed.
Disclosure of Invention
The invention provides a disc spring type metamaterial low-frequency vibration isolation pipeline and a pipeline-based connecting system, aiming at the problem that the existing seawater pipeline cannot realize vibration reduction and noise reduction under the condition of meeting internal pressure bearing.
The invention relates to a disc spring type metamaterial low-frequency vibration isolation pipeline which comprises a main framework,
the main framework comprises a disc-shaped spring structure formed by sequentially connecting a plurality of disc-shaped unit cells, and each disc-shaped unit cell comprises two disc-shaped single bodies; the outer contour of each disc-shaped single body is in a circular truncated cone shape and is provided with a large port and a small port; the small ports of the two disc-shaped single bodies are butted to form a disc-shaped unit cell;
and soft sound insulation layers are respectively filled on the inner surface and the outer surface of the disc spring structure to form a cylindrical structure of the main body framework.
According to the disc spring type metamaterial low-frequency vibration isolation pipeline, at least 3 disc-shaped unit cells are arranged.
According to the disc spring type metamaterial low-frequency vibration isolation pipeline, the inner circle radius R2 of the cylinder structure is more than or equal to 100mm, the outer circle radius of the cylinder structure is R2, and the following relational expression is satisfied:
10mm≤R2-r2≤30mm。
according to the disc spring type metamaterial low-frequency vibration isolation pipeline, the thickness of a disc-shaped single body is a, and a is larger than or equal to 1mm;
the radius R1 of the inner circle of the small end of the disc-shaped monomer is more than or equal to 102mm, the radius of the outer circle of the large end is R1, and the following relational expression is satisfied:
8mm≤R1-r1≤28mm。
according to the disc spring type metamaterial low-frequency vibration isolation pipeline, the soft sound insulation layer is a natural rubber layer.
The invention also provides a connecting system based on the pipeline, which is formed based on the disc spring type metamaterial low-frequency vibration isolation pipeline and is characterized by comprising a main framework and two connecting units symmetrically connected to two sides of the main framework;
each connecting unit comprises a connecting ring, an axial movement limiting ring, a circular movement limiting ring and a flange,
the connecting ring is fixedly connected with the end face of the main body framework, a buckle convex part is arranged on the outer end face of the connecting ring, and the buckle convex part is correspondingly and fixedly connected with a buckle concave part on the inner wall of the axial movement limiting ring; the annular motion limiting ring is sleeved in the ring of the axial motion limiting ring and used for limiting the circumferential position of the axial motion limiting ring;
the end face of the outer side of the axial movement limiting ring is fixedly connected with the end face of the inner side of the flange, and the outer end of the annular movement limiting ring extends into the flange and is fixedly connected with the inner wall of the flange.
According to the pipe-based connection system of the present invention, the flange is welded to the axial movement restriction ring and the circumferential movement restriction ring.
According to the pipeline-based connecting system, the number of the buckling convex parts of the connecting ring is 6, and the buckling convex parts are uniformly distributed along the circumferential direction.
According to the pipeline-based connecting system, the buckle convex part of the connecting ring is in a right-angle inverted hook shape with the top end extending to the outer ring, and the right-angle inverted hook tip of the buckle convex part is fixed with the buckle concave part on the inner wall of the axial movement limiting ring in a buckling mode, so that the axial position of the axial movement limiting ring is fixed.
According to the pipeline-based connecting system, the axial movement limiting ring, the circumferential movement limiting ring and the flange are made of 45-grade steel.
The invention has the beneficial effects that: the main framework of the pipeline adopts an axial periodic structure consisting of the disc-shaped single cells, the two disc-shaped single cells of the disc-shaped single cells are symmetrical along a contact surface, and the two sides of the disc-shaped single cells are filled with soft sound insulation materials. And then, connecting units are arranged on the two sides of the pipeline to form a pipeline connecting system.
The pipeline and the connecting system designed by the invention are mainly used in the field of seawater pipeline systems such as ships, submarines and the like, and can realize wide band gap performance in a low frequency band and good vibration and noise reduction performance in a medium and high frequency band. The periodic pipeline has reasonable structural design, simple configuration and easy processing, and has better vibration and noise reduction effects in a low frequency band compared with a common thin-wall cylindrical pipeline; meanwhile, the bearing index required by the actual use working condition can be met. Therefore, the pipeline and the connecting system have high applicability.
The invention considers the practical engineering problem, provides a connecting system for pipelines made of non-weldable materials and having a vibration isolation effect, realizes the connection of the non-weldable materials and flanges, can ensure the connection tightness and the connection reliability, and has a wide application range. The invention can be used for low-frequency vibration reduction of a seawater pipeline structure system, and is particularly suitable for pipeline structures with internal fluid pressure.
Drawings
FIG. 1 is a schematic structural diagram of a disc spring type metamaterial low-frequency vibration isolation pipeline with connecting rings arranged at two ends;
FIG. 2 is a schematic view of a split configuration of a tubing-based connection system;
FIG. 3 is a schematic diagram of the overall configuration of the conduit-based connection system;
FIG. 4 is a schematic view of the hoop motion limiting ring and flange of the coupling unit on one side of the pipeline-based coupling system as they are being installed;
FIG. 5 is a schematic view of a flange of the connection system when it is to be installed;
FIG. 6 is a schematic view of the relationship between the flange and the axial motion limiting ring after the flange and the annular motion limiting ring are connected;
FIG. 7 is a schematic structural section of a disk-shaped monomer;
FIG. 8 is a schematic illustration of the encapsulation parameters for a cylindrical structure;
FIG. 9 is a schematic solid view of a cylindrical structure;
FIG. 10 is a parameter schematic of a connection ring;
FIG. 11 is a schematic view of the snap feature of the connection ring;
FIG. 12 is a schematic view of an exemplary embodiment of a connection ring;
FIG. 13 is a schematic view of an exemplary embodiment of a snap of the connector ring;
FIG. 14 is a first partial structural parameter schematic view of the axial motion limiter ring;
FIG. 15 is a second partial structural parameter schematic view of the axial motion limiter ring;
FIG. 16 is a schematic view of the construction of the axial motion limiter ring;
FIG. 17 is a partial schematic view of the axial motion limiter ring;
FIG. 18 is a first portion of a hoop motion limiting ring with structural parameters shown schematically;
FIG. 19 is a schematic view of structural parameters of a second portion of the hoop motion limiting ring;
FIG. 20 is a schematic structural view of a hoop motion limiting ring;
FIG. 21 is a plot of the acoustic loss frequency response of the belleville spring configuration;
FIG. 22 is a graph of the vibration displacement response frequency response of the input and output of the connection system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In a first specific embodiment, as shown in fig. 1 to 6, the invention provides a disk spring type metamaterial low-frequency vibration isolation pipeline, which comprises a main framework 1, wherein the main framework 1 is made of a metamaterial;
the main framework 1 comprises a disc-shaped spring structure formed by sequentially connecting a plurality of disc-shaped unit cells, and each disc-shaped unit cell comprises two disc-shaped units; the outer contour of each dish-shaped single body is in a circular truncated cone shape and is provided with a large port and a small port; the small ports of the two dish-shaped monomers are butted to form a dish-shaped unit cell;
the inner surface and the outer surface of the disc-shaped spring structure are respectively filled with a soft sound insulation layer 2 to form a cylindrical structure with a certain thickness of a main framework.
In the axial artificial periodic structure formed by the disc-shaped spring structure in the embodiment, m unit cell structures are axially arranged along the pipeline, and the arrangement has the periodic structure band gap characteristic, so that vibration and noise can be reduced, and vibration and noise can be inhibited when a medium is conveyed. The disc spring structure is an axisymmetric structure and has the function of axial vibration reduction; the soft sound insulation layer 2 can reduce noise.
The main body frame 1 may be made of a PLA material, and has a characteristic of being incapable of being welded. Such as resins, nylon, hard plastics and aluminum alloys; the pouring rubber material is made of polyurethane and other synthetic rubber materials.
Further, as shown in fig. 1 to 5, the number of the discoid unit cells is at least 3.
The number of the dish-shaped single cells is selected according to the length requirement, and the structure of the dish-shaped single cells has a remarkable vibration reduction effect.
Still further, the inner circle radius R2 of the cylinder structure is more than or equal to 100mm, the outer circle radius of the cylinder structure is R2, and the following relational expression is satisfied:
10mm≤R2-r2≤30mm。
the selection of the combination size can enable the pipeline with the cylindrical structure to have better connecting, vibration damping and supporting functions.
The thickness of the disc-shaped monomer is a, and a is more than or equal to 1mm;
the radius R1 of the inner circle of the small end of the disc-shaped monomer is more than or equal to 102mm, the radius of the outer circle of the large end is R1, and the following relational expression is satisfied:
8mm≤R1-r1≤28mm。
the thickness of the disc-shaped monomer is selected to meet the vibration isolation effect within the frequency range required by the engineering background. The size and the material can be calculated and selected according to the actual working condition requirement and a theoretical formula of a band gap mechanism. The adjustment method is that when the wall thickness of the disc spring becomes thin, the forbidden band position moves to low frequency, and vice versa.
As an example, the soft sound insulation layer 2 is a soft natural rubber layer. The soft sound insulation layer 2 is used for sound insulation and vibration isolation and has a supporting function.
According to the implementation mode, the Bragg band gap characteristic of the artificial metamaterial structure is utilized, so that the vibration propagation performance in a specific frequency range can be effectively reduced, and the purposes of vibration isolation and noise reduction are achieved. Can provide a new idea for developing periodic structure or phononic crystal elastic wave metamaterial.
The result of simulation calculation by adopting ANSYS software shows that the pipeline has excellent vibration isolation effect within 0Hz-700Hz and a plurality of band gaps within 800Hz-1000 Hz.
In the embodiment, the structural size of each part of the pipeline can be adjusted as required, so that the vibration isolation effect under a specific frequency domain is realized.
According to the implementation mode, a periodic metamaterial structure design is adopted, a Bragg periodic structure is constructed, a Bragg band gap is mainly generated, and the frequency position of the Bragg periodic structure is mainly controlled by Bragg conditions. The purposes of vibration isolation and noise reduction in a specific frequency domain range can be achieved by adjusting the thickness and the axial period number of the disc spring and the material filled with rubber. The transmission characteristic of axial vibration in a low-frequency band can be effectively inhibited, and the vibration isolator is used in practical engineering of low-frequency vibration attenuation and isolation.
In the second embodiment, as shown in fig. 2 to 6, the invention further provides a connection system based on a pipeline, which is formed based on the first embodiment, namely the disc spring type metamaterial low-frequency vibration isolation pipeline, and comprises a main framework 1 and two connection units symmetrically connected to two sides of the main framework 1;
each connection unit comprises a connection ring 2, an axial movement restriction ring 3, a circumferential movement restriction ring 4 and a flange 5,
the connecting ring 2 is fixedly connected with the end face of the main body framework 1, a buckle convex part is arranged on the outer end face of the connecting ring 2, and the buckle convex part is correspondingly and fixedly connected with a buckle concave part on the inner wall of the axial motion limiting ring 3; a circular motion limiting ring 4 is sleeved in the ring of the axial motion limiting ring 3, and the circular motion limiting ring 4 is used for limiting the circumferential position of the axial motion limiting ring 3;
the outer end face of the axial movement limiting ring 3 is fixedly connected with the inner end face of the flange 5, and the outer end of the annular movement limiting ring 4 extends into the flange 5 and is fixedly connected with the inner wall of the flange 5.
In the first embodiment, the main body frame 1 is made of a metamaterial, and cannot be welded and fixed with a flange as a noise reduction and vibration isolation pipeline. Therefore, the embodiment designs the connecting system with the inner buckle, the main body framework 1 can be connected with the flange through the design of the switching structure, and the connecting system has a good sealing effect. The connection system has high reliability and low requirements for use.
The axial movement limiting ring 3 and the annular movement limiting ring 4 are connected to two ends of the main body framework 1, and can limit the movement of the main body framework 1 in the annular direction and the axial direction.
By way of example, the flange 5 is welded to the axial movement restriction ring 3 and the circumferential movement restriction ring 4.
As an example, the number of the snap protrusions of the connection ring 2 is 6, and the snap protrusions are evenly distributed along the circumferential direction.
As shown in fig. 1 and 2, the snap convex portion of the connection ring 2 and the snap concave portion of the inner wall of the axial movement restriction ring 3 constitute an inner snap structure. Meanwhile, tooth grooves are formed in the inner wall of the axial movement limiting ring 3 at intervals in the circumferential direction and are matched with the tooth grooves formed in the end face of the inner side of the annular movement limiting ring 4, so that the circumferential position of the axial movement limiting ring 3 is fixed, and the circumferential position of the main body framework 1 is further fixed; after the tooth grooves of the annular movement limiting ring 4 are embedded into the tooth grooves of the inner wall of the axial movement limiting ring 3, the outer end part of the annular movement limiting ring 4 is higher than the axial movement limiting ring 3, the outer end part of the annular movement limiting ring 4 is embedded into the flange 5 and is welded and fixed with the inner wall of the flange 5, and meanwhile, the outer end face of the axial movement limiting ring 3 is welded and fixed with the inner end face of the flange 5.
Further, as shown in fig. 1 and fig. 2, the convex fastening portion of the connection ring 2 is in a right-angled inverted hook shape with a top end extending to the outer ring, and a right-angled inverted hook tip of the convex fastening portion is fastened and fixed with the concave fastening portion on the inner wall of the axial movement limiting ring 3, so that the axial position of the axial movement limiting ring 3 is fixed. The right-angle barb tip can be provided with a buckle lock for preventing the annular movement of the axial movement limiting ring 3.
As an example, the connection ring 2, the axial movement limiting ring 3, the circumferential movement limiting ring 4 and the flange 5 are all made of steel, and are made of 45 # steel, so that the welding connection between the main body framework 1 and the flange 5 is indirectly realized.
The first embodiment is as follows:
the specific parameters for the connection system were chosen as follows:
as shown in fig. 7, a =4mm, r1=126mm, r1=144mm, and the axial height z =28.75mm of the single disc-shaped monomer.
Referring to fig. 8, after the disc spring structure is encapsulated, a cylindrical structure is formed, and R2=125mm, R2=145mm, b = R2-R1 is the difference between the outer circle radius of the encapsulated cylindrical structure and the outer circle radius of the large end of the disc-shaped monomer, which is R1, and b =1mm;
as shown in fig. 10 to 13, the parameters of the connection ring 2 can be selected as follows: c is the axial height of the connecting ring circular ring, and c =2mm; r3 is the inner radius of the connecting ring buckle, r3=125mm; r3 is the outer radius of the connecting ring buckle, and R3=138mm; α 2 is the degree of the annular fastening of the connecting ring, and α 2=30 degrees; theta 2 is the circumferential width of the circumferential buckle at the lower end of the buckle, and theta 2 is not larger than 30 degrees; beta is the width beta =3 degrees of the circle center of the circular hollowed-out part of the buckle and the hollowed-out end surface in the annular direction; d = R3-R3, is the span of the clip in the radial direction, d =13mm; e is the axial height of the buckle, and e =20mm; k is the radial span of the inner wall of the buckle, and k =5mm; l is the radial span of the buckle, l =4mm; j is the radial span of the outer wall of the buckle, and j =4mm; f is the axial height of the upper section of the buckle, and f =3mm; g is the axial height of the rectangular hollow, and g =2mm; h is the axial height of the rectangular hollowed-out lower part structure, and h =4mm; r6 is the radius of the circular hollow, and r6=3mm;
as shown in fig. 14 and 17, r4 is the axial confinement ring inner diameter, r4=130mm; r4 is the outer diameter of the middle axial limiting ring, and R4=145mm; α 3 is the width of the axial limiting ring in the circumferential direction, and α 3=28 degrees; θ 3 is the span of the axial confinement ring without the snap portion, θ 3=32 degrees; m1 is the radial thickness of the inner wall of the axial limiting ring, and m1=3.4mm; n is the span of the axial limiting ring in the radial direction, and n =4.2mm; o is the wall thickness of the outer wall of the axial confinement ring, o =7mm; r is the height of the outer wall higher than the inner wall in the axial direction, and r =3.4mm; q is the height of the inner wall higher than the buckle in the axial direction, and q =5mm; p is the thickness of the lower wall surface in the axial direction, and p =11.5mm; m2 is the number of cycles of the buckle in the circumferential direction, and m2=6;
as shown in fig. 18 to 20, α 4 is a span of the convex portion of the circular motion limiting ring in the circular direction, and α 4=28 degrees; theta 4 is the span of the concave part of the annular limiting ring in the annular direction, and theta 4=32 degrees; s is the height of the concave part in the axial direction, and s =14mm; t is the height of the projection higher than the recess in the axial direction, and t =15mm; u is the span of the ring in the radial direction, u =11.5mm; r5 is the inner diameter of the annular limiting ring, and r5=125mm; r5 is the outer diameter of the ring, R5=136.5mm;
the parameters of the embodiment are selected, so that the vibration isolation pipeline made of the non-weldable material can be firmly connected with the metal flange by the connecting system.
As shown in fig. 21 and 22, the disc spring has a wide vibration isolation effect in the frequency band of 0Hz to 400Hz after the above selection of the structural parameters.
In this frequency band, the overall vibration isolation order of the disc spring structure is around 20 dB. In the frequency band of 400Hz-700Hz, the disc spring structure has more peaks, but the whole vibration isolation effect is still below 0 dB. In the whole frequency band of 0Hz-1000Hz, the disc spring structure has better overall vibration isolation performance, and has better low-frequency vibration isolation performance in the low-frequency stage, thus having higher practical application value.
In conclusion, by designing a metamaterial structure band gap mechanism, the characteristics of the structure such as the position, the width and the like of a vibration band gap can be regulated and controlled. The disk-shaped metamaterial pipeline designed by the invention can effectively inhibit vibration in a low-frequency range. The connecting system has small limitation on the material of the pipeline, the selectable range is extremely large, the requirement on the size of the flange is low, and the repeatable utilization rate of the pipeline is extremely high after the flange is disassembled.
In practical use, a conveying device needing specific frequency domain vibration isolation is connected with the system, and when medium pulses conveyed by the conveying device cause pipeline vibration, longitudinal vibration can realize the vibration isolation effect in a low frequency range under the influence of the metamaterial periodic structure band gap mechanism.
The connecting system adopts a plurality of connecting forms with compact structures, can achieve a sealing effect with high reliability under the condition of no welding, and is connected firmly. The direction is not restricted to placing in use, the effect that the axial vibration isolation and noise reduction can meet the requirement is achieved, and certain universality is achieved.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A disc spring type metamaterial low-frequency vibration isolation pipeline is characterized by comprising a main framework (1),
the main body framework (1) comprises a disc spring structure formed by sequentially connecting a plurality of disc-shaped unit cells, and each disc-shaped unit cell comprises two disc-shaped single bodies; the outer contour of each disc-shaped single body is in a circular truncated cone shape and is provided with a large port and a small port; the small ports of the two disc-shaped single bodies are butted to form a disc-shaped unit cell;
the inner surface and the outer surface of the disc spring structure are respectively filled with a soft sound insulation layer (2) to form a cylindrical structure of the main body framework.
2. The disc spring type metamaterial low frequency vibration isolation tube as claimed in claim 1,
the number of the discoid single cells is at least 3.
3. The disc spring type metamaterial low frequency vibration isolation tube as claimed in claim 2,
the inner circle radius R2 of the cylinder structure is more than or equal to 100mm, the outer circle radius of the cylinder structure is R2, and the following relational expression is satisfied:
10mm≤R2-r2≤30mm。
4. the disc spring type metamaterial low frequency vibration isolation tube as claimed in claim 3,
the thickness of the dish-shaped monomer is a, and a is more than or equal to 1mm;
the radius R1 of the inner circle of the small end of the disc-shaped monomer is more than or equal to 102mm, the radius of the outer circle of the large end is R1, and the following relational expression is satisfied:
8mm≤R1-r1≤28mm。
5. the disc spring type metamaterial low frequency isolation pipe as claimed in any one of claims 1 to 4,
the soft sound insulation layer (2) is a natural rubber layer.
6. A pipeline-based connecting system is formed on the basis of the disc spring type metamaterial low-frequency vibration isolation pipeline as claimed in any one of claims 1 to 5, and is characterized by comprising a main framework (1) and two connecting units symmetrically connected to two sides of the main framework (1);
each connecting unit comprises a connecting ring (2), an axial movement limiting ring (3), a circular movement limiting ring (4) and a flange (5),
the connecting ring (2) is fixedly connected with the end face of the main body framework (1), a buckle convex part is arranged on the outer end face of the connecting ring (2), and the buckle convex part is correspondingly and fixedly connected with a buckle concave part on the inner wall of the axial motion limiting ring (3); a circular motion limiting ring (4) is sleeved in the ring of the axial motion limiting ring (3), and the circular motion limiting ring (4) is used for limiting the circumferential position of the axial motion limiting ring (3);
the end face of the outer side of the axial movement limiting ring (3) is fixedly connected with the end face of the inner side of the flange (5), and the outer end of the annular movement limiting ring (4) extends into the flange (5) and is fixedly connected with the inner wall of the flange (5).
7. The conduit-based connection system of claim 6,
and the flange (5) is fixedly welded with the axial motion limiting ring (3) and the annular motion limiting ring (4).
8. The conduit-based connection system of claim 7,
the number of the buckle convex parts of the connecting ring (2) is 6, and the buckle convex parts are uniformly distributed along the circumferential direction.
9. The conduit-based connection system of claim 8,
the buckle convex part of go-between (2) is the right angle inverted hook form that the top extends to the outer loop, and the right angle inverted hook point of buckle convex part is fixed with the buckle concave part buckle of axial motion retainer ring (3) inner wall, makes the axial position of axial motion retainer ring (3) fixed.
10. The conduit-based connection system of claim 9,
the axial motion limiting ring (3), the annular motion limiting ring (4) and the flange (5) are made of No. 45 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211407005.7A CN115654254B (en) | 2022-11-10 | 2022-11-10 | Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211407005.7A CN115654254B (en) | 2022-11-10 | 2022-11-10 | Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115654254A true CN115654254A (en) | 2023-01-31 |
| CN115654254B CN115654254B (en) | 2023-08-18 |
Family
ID=85021191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211407005.7A Active CN115654254B (en) | 2022-11-10 | 2022-11-10 | Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115654254B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000199541A (en) * | 1999-01-05 | 2000-07-18 | Nippon Steel Corp | Vibration suspension device |
| US6398266B1 (en) * | 1999-09-22 | 2002-06-04 | Ballard Medical Products | Collapse resistant popoid connector |
| CN105839806A (en) * | 2016-04-01 | 2016-08-10 | 东南大学 | Viscoelastic vibration reduction and isolation device provided with belleville springs |
| CN215807105U (en) * | 2021-07-21 | 2022-02-11 | 南京光声超构材料研究院有限公司 | Frequency-adjustable silencer |
| CN114251530A (en) * | 2021-12-25 | 2022-03-29 | 唐凯璇 | Quick-insertion type pipe joint |
| CN217208331U (en) * | 2021-12-27 | 2022-08-16 | 江苏五星波纹管有限公司 | Damping expansion joint for high-pressure pipeline |
-
2022
- 2022-11-10 CN CN202211407005.7A patent/CN115654254B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000199541A (en) * | 1999-01-05 | 2000-07-18 | Nippon Steel Corp | Vibration suspension device |
| US6398266B1 (en) * | 1999-09-22 | 2002-06-04 | Ballard Medical Products | Collapse resistant popoid connector |
| CN105839806A (en) * | 2016-04-01 | 2016-08-10 | 东南大学 | Viscoelastic vibration reduction and isolation device provided with belleville springs |
| CN215807105U (en) * | 2021-07-21 | 2022-02-11 | 南京光声超构材料研究院有限公司 | Frequency-adjustable silencer |
| CN114251530A (en) * | 2021-12-25 | 2022-03-29 | 唐凯璇 | Quick-insertion type pipe joint |
| CN217208331U (en) * | 2021-12-27 | 2022-08-16 | 江苏五星波纹管有限公司 | Damping expansion joint for high-pressure pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115654254B (en) | 2023-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8132645B2 (en) | Attenuation device particularly pulsation attenuator | |
| CN108561669B (en) | Elastic back cavity type pipeline vibration damping and noise eliminating device | |
| US3776364A (en) | Noise reduction apparatus and method | |
| GB2422282A (en) | Acoustic reflector | |
| CN105845122A (en) | Ultrathin bi-directional sound obstruction channel | |
| CN115654254B (en) | Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system | |
| CN110264989B (en) | Phonon crystal for suppressing low-frequency-band ultra-wideband elastic wave propagation | |
| CN110925056B (en) | Exhaust device with noise suppression system | |
| CN115620689A (en) | Annular spiral acoustic black hole vibration reduction structure | |
| CN106090523A (en) | A kind of pipeline pressure pulsation attenuator based on mass-spring system | |
| US3578107A (en) | Pulsation dampener using nonlinear decoupling means | |
| CN210777829U (en) | Phononic crystal and absorption layer, ship, detector, torpedo, submarine and aircraft carrier comprising same | |
| US4661738A (en) | Compensation techniques for temperature effects and non-uniform amplitude distributions in saw devices | |
| CN217502883U (en) | Pipeline vibration damper | |
| GB2348336A (en) | A suspension for diaphragm actuators | |
| CN112951190A (en) | Variable cross-section pipeline low-frequency broadband vibration damper based on acoustic metamaterial | |
| CN111120551A (en) | Three-negative elastic wave metamaterial with wide forbidden band | |
| CN221237356U (en) | Rubber soft joint | |
| CN216843648U (en) | Geothermal conveying pipeline with composite material | |
| CN111667808A (en) | Low-frequency broadband quasi-periodic sound insulation structure with variable impedance and thickness gradient | |
| KR20190136366A (en) | Low frequency silencer | |
| CN205919056U (en) | Pipeline pressure pulsation dampening based on spring oscillator system | |
| JP7333905B2 (en) | pipe silencer | |
| CN219534045U (en) | Return-type acoustic super structure | |
| CN113062944B (en) | Discontinuous rib type composite vibration reduction energy dissipater and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |