CN115654254B - Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system - Google Patents
Belleville spring type metamaterial low-frequency vibration isolation pipeline and pipeline-based connecting system Download PDFInfo
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- CN115654254B CN115654254B CN202211407005.7A CN202211407005A CN115654254B CN 115654254 B CN115654254 B CN 115654254B CN 202211407005 A CN202211407005 A CN 202211407005A CN 115654254 B CN115654254 B CN 115654254B
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- 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
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Abstract
A belleville 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 cannot 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 single cells, and each disc-shaped single cell comprises two disc-shaped single cells; the outer contour of each disc-shaped single body is in a truncated cone shape and is provided with a big port and a small port; the small ports of the two dish-shaped monomers are butted to form a dish-shaped unit cell; soft sound insulation layers are respectively filled on the inner surface and the outer surface of the belleville spring structure to form a cylindrical structure of the main body framework. The invention is used in a seawater pipeline structure with internal fluid pressure.
Description
Technical Field
The invention relates to a belleville 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 transportation is widely applied to the ship field as a key connecting link of the pump structures.
Due to the flow velocity of the fluid, the pipeline can generate vibration and noise problems in the process of conveying the energy medium. Flow induced vibration and flow induced noise of such piping systems will adversely affect the stability of the piping delivery. The design of the existing pipeline cannot meet the dual requirements of vibration reduction and bearing, and cannot meet the use in engineering practice.
Therefore, the design of vibration reduction and noise reduction can be carried out under the condition of meeting the internal pressure bearing condition of the pipeline system, and the design becomes a key link for guaranteeing the energy transmission stability of the marine pipeline system.
Disclosure of Invention
Aiming at the problem that the existing seawater pipeline cannot realize vibration reduction and noise reduction under the condition of meeting the internal pressure bearing, the invention provides a belleville spring type metamaterial low-frequency vibration isolation pipeline and a pipeline-based connection system.
The invention relates to a disc spring type metamaterial low-frequency vibration isolation pipeline, which comprises a main body framework,
the main body framework comprises a disc spring structure formed by sequentially connecting a plurality of disc-shaped single cells, and each disc-shaped single cell comprises two disc-shaped single cells; the outer contour of each disc-shaped single body is in a truncated cone shape and is provided with a big port and a small port; the small ports of the two dish-shaped monomers are butted to form a dish-shaped unit cell;
soft sound insulation layers are respectively filled on the inner surface and the outer surface of the belleville spring structure to form a cylindrical structure of the main body framework.
According to the disc spring type metamaterial low-frequency vibration isolation pipeline, the number of disc-shaped single cells is at least 3.
According to the disc spring type metamaterial low-frequency vibration isolation pipeline, the radius R2 of the inner circle of the cylinder structure is more than or equal to 100mm, the radius of the outer circle of the cylinder structure is R2, and the following relation is satisfied:
10mm≤R2-r2≤30mm。
according to the disc spring type metamaterial low-frequency vibration isolation pipeline, the thickness of a disc monomer is a, and a is more than or equal to 1mm;
the radius R1 of the small end inner circle of the disc monomer is more than or equal to 102mm, the radius of the large end outer circle is R1, and the following relation is satisfied:
8mm≤R1-r1≤28mm。
according to the belleville 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 belleville spring type metamaterial low-frequency vibration isolation pipeline and is characterized by comprising a main body framework and two connecting units symmetrically connected to two sides of the main body framework;
each connecting unit comprises a connecting ring, an axial movement limiting ring, an annular movement limiting ring and a flange,
the connecting ring is fixedly connected with the end face of the main body framework, the outer end face of the connecting ring is provided with a buckling convex part, and the buckling convex part is correspondingly and fixedly connected with a buckling concave part of 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 outer end face of the axial movement limiting ring is fixedly connected with the inner end face of the flange, and meanwhile 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 pipeline-based connecting system, the flange is welded and fixed with the axial movement limiting ring and the annular movement limiting 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 connecting system based on the pipeline, the buckling convex part of the connecting ring is in a right-angle reversed hook shape with the top end extending towards the outer ring, and the right-angle reversed hook tip of the buckling convex part is buckled and fixed with the buckling concave part of the inner wall of the axial movement limiting ring, 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 annular movement limiting ring and the flange are made of No. 45 steel.
The invention has the beneficial effects that: the main body framework of the pipeline adopts an axial periodic structure composed of the dish-shaped single cells, the two dish-shaped single cells of the dish-shaped single cells are symmetrical along the contact surface, and the two sides of the dish-shaped single cells are filled with soft sound insulation materials. And then a pipeline connecting system is formed based on the connecting units arranged on the two sides of the pipeline.
The pipeline and the connecting system designed by the invention are mainly used in the field of seawater pipeline systems of ships, submarines and the like, can realize wide-band-gap performance in a low frequency band, and can realize good vibration and noise reduction performance in a medium-high frequency band. The periodic pipeline has reasonable structure 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 engineering practical problem, and provides a connecting system for the pipeline with vibration isolation effect, which is made of non-weldable materials, realizes the connection between the non-weldable materials and the flange, can ensure the tightness and the reliability of the connection, and has a very 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 diagram of the structure of the belleville spring type metamaterial low-frequency vibration isolation pipeline with connecting rings at two ends;
FIG. 2 is a schematic diagram of a split construction of a piping-based connection system;
FIG. 3 is a schematic overall construction of a piping-based connection system;
FIG. 4 is a schematic illustration of the circumferential motion limiter ring and flange in the connection unit on one side of the tubing-based connection system to be installed;
FIG. 5 is a schematic view of a flange of the connection system to be installed;
FIG. 6 is a schematic diagram of the correspondence between a flange and an axial motion limiting ring after the flange is connected with the annular motion limiting ring;
FIG. 7 is a schematic cross-sectional view of a structure of a disk-shaped unit;
FIG. 8 is a schematic diagram of encapsulation parameters for a cylindrical structure;
FIG. 9 is a physical schematic of a cylindrical structure;
FIG. 10 is a parametric schematic of a connection ring;
FIG. 11 is a schematic diagram of parameters of a snap-fit structure of a connecting ring;
FIG. 12 is a schematic illustration of a specific implementation of a connecting ring;
FIG. 13 is a schematic view of an exemplary embodiment of a clasp of the connecting ring;
FIG. 14 is a first partial structural parameter schematic of an axial motion limiter ring;
FIG. 15 is a second partial structural parameter schematic of the axial motion limiter ring;
FIG. 16 is a schematic structural view of an axial motion limiter ring;
FIG. 17 is a partial schematic view of an axial motion limiter ring;
FIG. 18 is a first partial structural parameter schematic of the circumferential motion limiting ring;
FIG. 19 is a second partial structural parameter schematic of the circumferential motion limiting ring;
FIG. 20 is a schematic view of the construction of the circumferential motion limiting ring;
FIG. 21 is a plot of the acoustic loss frequency response of a belleville spring structure;
FIG. 22 is a graph of the vibration displacement response frequency response of the connection system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The invention provides a disc spring type metamaterial low-frequency vibration isolation pipeline, which is shown in the accompanying drawings of fig. 1 to 6, and comprises a main body framework 1, wherein the main body framework 1 is made of metamaterial;
the main body framework 1 comprises a disc spring structure formed by sequentially connecting a plurality of disc-shaped single cells, and each disc-shaped single cell comprises two disc-shaped single cells; the outer contour of each disc-shaped single body is in a truncated cone shape and is provided with a big port and a small port; the small ports of the two dish-shaped monomers are butted to form a dish-shaped unit cell;
soft sound insulation layers are respectively filled on the inner surface and the outer surface of the belleville spring structure to form a cylindrical structure with a certain thickness of the main body framework.
In the axial artificial periodic structure formed by the disc spring structure in the embodiment, m single cell structures are axially arranged along the pipeline, and the arrangement has band gap characteristics of the periodic structure, so that vibration and noise can be reduced, and vibration can be inhibited and noise can be reduced 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 can realize noise reduction.
The main body frame 1 may be made of PLA material, and has a characteristic of being non-weldable. Such as resins, nylon, hard plastic, and aluminum alloys; the pouring rubber material adopts polyurethane and other synthesizable gelatinous materials.
Further, as shown in connection with fig. 1 to 5, the number of the dish-shaped 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 obvious vibration reduction effect.
Still further, the radius R2 of the inner circle of the cylinder structure is more than or equal to 100mm, the radius of the outer circle of the cylinder structure is R2, and the following relation is satisfied:
10mm≤R2-r2≤30mm。
the combination of the selection of the size can lead the tubular structure pipeline to have better connection, vibration reduction and supporting functions.
The thickness of the disc monomer is a, a is more than or equal to 1mm;
the radius R1 of the small end inner circle of the disc monomer is more than or equal to 102mm, the radius of the large end outer circle is R1, and the following relation is satisfied:
8mm≤R1-r1≤28mm。
the thickness of the disc-shaped monomer is selected to meet the vibration isolation effect in the frequency range required by engineering background. The size and the material can be calculated and selected according to the theoretical formula with the band gap mechanism according to the actual working condition requirement. The adjustment method is that when the wall thickness of the disc spring is thinned, the forbidden band position moves towards low frequency, and conversely moves towards high frequency.
As an example, the soft sound insulation layer is a soft natural rubber layer. The soft sound insulation layer is used for sound insulation and vibration isolation and has a supporting function.
According to the method, 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 structures or phonon crystal elastic wave metamaterials.
Simulation calculation is carried out by adopting ANSYS software, and the result shows that the pipeline has excellent vibration isolation effect within 0Hz-700Hz and has a plurality of band gaps within 800Hz-1000 Hz.
In the embodiment, the structural size of each part of the pipeline can be adjusted according to the requirement to realize the vibration isolation effect under a specific frequency domain.
In the embodiment, a Bragg periodic structure is constructed by adopting a periodic metamaterial structure design, a Bragg band gap is mainly generated, and the occurrence frequency position of the Bragg band gap is mainly controlled by Bragg conditions. The vibration isolation and noise reduction purposes in a specific frequency domain range can be achieved by adjusting the thickness of the belleville springs, the number of axial cycles and the material filled with rubber. The axial vibration can be effectively restrained from transmitting characteristics in a low frequency band, and the axial vibration isolator is used in actual engineering of low frequency vibration attenuation and vibration isolation.
The invention also provides a connecting system based on a pipeline, which is formed by the disc spring type metamaterial low-frequency vibration isolation pipeline based on the first embodiment, and comprises a main body framework 1 and two connecting units symmetrically connected to two sides of the main body framework 1, wherein the second embodiment is shown in combination with figures 2 to 6;
each connection unit comprises a connection ring 2, an axial motion limiting ring 3, a circumferential motion 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 buckling convex part is arranged on the outer end face of the connecting ring 2, and the buckling convex part is correspondingly and fixedly connected with a buckling concave part on the inner wall of the axial movement limiting ring 3; the annular motion limiting ring 4 is sleeved in the ring of the axial motion limiting ring 3, and the annular 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 meanwhile 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 framework 1 is made of a metamaterial, and the main body framework serving as a noise reduction vibration isolation pipeline cannot be welded and fixed with a flange. Therefore, the connecting system with the inner buckle is designed in the embodiment, and 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 use requirement.
The axial movement limiting rings 3 and the circumferential movement limiting rings 4 are connected to two ends of the main body framework 1, so that the movement of the main body framework 1 in the circumferential direction and the axial direction can be limited.
As an example, the flange 5 is welded to the axial movement limiting ring 3 and the circumferential movement limiting ring 4.
As an example, the number of snap-fit protrusions of the connection ring 2 is 6, which are uniformly distributed in the circumferential direction.
As shown in fig. 1 and 2, the locking protrusion of the connecting ring 2 and the locking recess of the inner wall of the axial movement limiting ring 3 form an inner locking structure. Meanwhile, tooth grooves are formed in the inner wall of the axial movement limiting ring 3 at intervals along the circumferential direction and are matched with the tooth grooves formed in the inner side end face of the circumferential 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 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 ring and fixedly welded with the inner wall of the flange 5, and meanwhile, the outer end surface of the axial movement limiting ring 3 is fixedly welded with the inner end surface of the flange 5.
Still further, as shown in fig. 1 and 2, the fastening convex portion of the connecting ring 2 is in a right-angle barb shape with the top end extending to the outer ring, and the right-angle barb tip of the fastening convex portion is fastened and fixed with the fastening concave portion of the inner wall of the axial movement limiting ring 3, so that the axial position of the axial movement limiting ring 3 is fixed. A lock for preventing the axial movement of the limiting ring 3 from moving in the circumferential direction can be arranged at the point of the right-angle reverse hook.
As an example, the connecting ring 2, the axial movement limiting ring 3, the annular movement limiting ring 4 and the flange 5 are all of steel structures, and are made of 45 # steel, so that the main body framework 1 and the flange 5 are indirectly welded and connected.
First embodiment:
the specific parameters for the connection system are selected as follows:
as shown in connection with fig. 7, a=4mm, r1=126 mm, r1=144 mm, and the axial height z of the individual disk-shaped monomers=28.75 mm.
Referring to fig. 8, after encapsulation, a cylindrical structure is formed, where r2=125 mm, r2=145 mm, and b=r2-R1 are taken as the difference between the radius of the outer circle of the encapsulated cylindrical structure and the radius of the outer circle of the large end of the disc monomer, and b=1mm;
as shown in connection with 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, c=2mm; r3 is the inner radius of the connecting ring buckle, r3=125mm; r3 is the outer radius of the connecting ring buckle, r3=138 mm; α2 is the degree of the connecting ring being buckled in the circumferential direction, α2=30 degrees; θ2 is the circumferential width of the lower end circumferential buckle of the buckle, and θ2=30 degrees; beta is the circle center of the circular hollowed-out part of the buckle and the width beta=3 degrees of the hollowed-out end face in the circumferential direction; d=r3-R3, the span of the clip in the radial direction, d=13 mm; e is the axial height of the buckle, e=20mm; k is the radial span of the inner wall of the buckle, k=5mm; l is the radial span of the clasp, l=4mm; j is the radial span of the outer wall of the buckle, j=4mm; f is the axial height of the upper section of the buckle, f=3mm; g is the axial height of the rectangular hollow, g=2mm; h is the axial height of the rectangular hollowed-out lower part structure, and h=4mm; r6 is a round hollowed-out radius, and r6=3mm;
as shown in connection with fig. 14 and 17, r4 is the axial confinement ring inner diameter, r4=130 mm; r4 is the outer diameter of the central limiting ring, r4=145 mm; α3 is the width of the axial confinement ring snap-fit in the circumferential direction, α3=28 degrees; θ3 is the span of the axial confinement ring without the snap-fit portion, θ3=32 degrees; m1 is the radial thickness of the inner wall of the axial confinement ring, m1=3.4mm; n is the radial span of the axial limiting ring buckle, n=4.2 mm; 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, r=3.4 mm; 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, p=11.5 mm; m2 is the number of cycles of buckling in the circumferential direction, m2=6;
as shown in connection with fig. 18 to 20, α4 is the span of the convex portion of the circumferential movement restriction ring in the circumferential direction, α4=28 degrees; θ4 is the span of the concave portion of the circumferential confinement ring in the circumferential direction, θ4=32 degrees; s is the height of the concave part in the axial direction, s=14mm; t is the height of the protrusion higher than the recess in the axial direction, t=15mm; u is the span of the ring in the radial direction, u=11.5 mm; r5 is the inner diameter of the circumferential confinement ring, r5=125 mm; r5 is the outer diameter of the ring, r5=136.5 mm;
the parameter selection of the embodiment can ensure that the connecting system firmly connects the vibration isolation pipeline made of the non-weldable material with the metal flange.
With reference to fig. 21 and 22, the disc spring has a wide frequency band vibration isolation effect in the frequency band of 0Hz-400Hz after the above selection of the disc spring structural parameters.
In this band, the overall vibration isolation level of the belleville spring structure is around 20 dB. In the frequency band of 400Hz-700Hz, the disc spring structure has more peaks, but the integral vibration isolation effect is still below 0 dB. The disc spring structure has good integral vibration isolation performance in the whole frequency band of 0Hz-1000Hz, and has good low-frequency vibration isolation performance in the low-frequency stage, and has high practical application value.
In conclusion, the position, the width and other characteristics of the structural vibration band gap can be regulated and controlled by designing a band gap mechanism of the metamaterial structure. The disc-shaped metamaterial pipeline designed by the invention can effectively inhibit vibration in a low-frequency range. The connecting system has the advantages of small material limitation on the pipeline, extremely large optional range, lower size requirement on the flange and extremely high recycling rate of the pipeline after the flange is disassembled.
In actual use, a conveying device needing vibration isolation in a specific frequency domain is connected with the system, and when a medium pulse conveyed by the conveying device induces pipeline vibration, longitudinal vibration can realize the vibration isolation effect in a low frequency range under the influence of a band gap mechanism of the metamaterial periodic structure.
The connecting system adopts a plurality of connecting forms with compact structures, can achieve the sealing effect with higher reliability under the condition of no welding, and has firm connection. The vibration isolation and noise reduction device is not limited in the placement direction in use, can achieve the effect of requirements on axial vibration isolation and noise reduction, and has certain universality.
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 the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (6)
1. A connecting system based on pipelines is composed of a disc spring type metamaterial low-frequency vibration isolation pipeline which comprises a main body framework (1),
the main body framework (1) comprises a disc spring structure formed by sequentially connecting a plurality of disc-shaped single cells, and each disc-shaped single cell comprises two disc-shaped single cells; the outer contour of each disc-shaped single body is in a truncated cone shape and is provided with a big port and a small port; the small ports of the two dish-shaped monomers are butted to form a dish-shaped unit cell;
soft sound insulation layers are respectively filled on the inner surface and the outer surface of the belleville spring structure to form a cylindrical structure of the main body framework;
at least 3 dish-shaped single cells;
the radius R2 of the inner circle of the cylinder structure is more than or equal to 100mm, the radius of the outer circle of the cylinder structure is R2, and the following relation is satisfied:
10mm≤R2-r2≤30mm；
the thickness of the disc monomer is a, a is more than or equal to 1mm;
the radius R1 of the small end inner circle of the disc monomer is more than or equal to 102mm, the radius of the large end outer circle is R1, and the following relation is satisfied:
8mm≤R1-r1≤28mm；
the device is characterized by comprising a main body framework (1) and two connecting units symmetrically connected to two sides of the main body framework (1);
each connecting unit comprises a connecting ring (2), an axial movement limiting ring (3), a circumferential 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 buckling convex part is arranged on the outer end face of the connecting ring (2), and the buckling convex part is correspondingly and fixedly connected with a buckling concave part on the inner wall of the axial movement limiting ring (3); the annular movement limiting ring (4) is sleeved in the ring of the axial movement limiting ring (3), and the annular movement limiting ring (4) is used for limiting the circumferential position of the axial movement 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 meanwhile 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).
2. The piping-based connection system of claim 1, wherein,
the soft sound insulation layer is a natural rubber layer.
3. The piping-based connection system of claim 2, wherein,
the flange (5) is welded and fixed with the axial movement limiting ring (3) and the annular movement limiting ring (4).
4. The piping-based connecting system of claim 3, wherein,
the number of the buckling convex parts of the connecting ring (2) is 6, and the buckling convex parts are uniformly distributed along the circumferential direction.
5. The piping-based connecting system of claim 4, wherein,
the buckling convex part of the connecting ring (2) is in a right-angle reverse hook shape with the top end extending towards the outer ring, and the right-angle reverse hook tip of the buckling convex part is buckled and fixed with the buckling concave part of the inner wall of the axial movement limiting ring (3), so that the axial position of the axial movement limiting ring (3) is fixed.
6. The piping-based connecting system of claim 5, wherein,
the axial movement limiting ring (3), the annular movement 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 |
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| CN115654254A CN115654254A (en) | 2023-01-31 |
| CN115654254B true CN115654254B (en) | 2023-08-18 |
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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 |
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| Publication number | Publication date |
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| CN115654254A (en) | 2023-01-31 |
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