CN110822208B - Pipeline damping clamp structure - Google Patents
Pipeline damping clamp structure Download PDFInfo
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- CN110822208B CN110822208B CN201911001633.3A CN201911001633A CN110822208B CN 110822208 B CN110822208 B CN 110822208B CN 201911001633 A CN201911001633 A CN 201911001633A CN 110822208 B CN110822208 B CN 110822208B
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- pipeline
- damping
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- ring
- inner ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0335—Noise absorbers by means of external rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a pipeline vibration reduction clamp structure, belonging to the field of pipeline system optimization design; the device comprises a pipeline, a support, a fastener, a clamp, an outer ring component, a damping pad component and an inner ring component; wherein, the pipeline is axially and horizontally arranged; the support is arranged vertically below the pipeline; the inner ring component is coated on the outer wall of the pipeline; the outer ring assembly is coated on the inner ring assembly and the outer wall of the pipeline; the damping pad assembly is arranged between the outer ring assembly and the inner ring assembly; the pipeline is placed on the support, and the outer wall of the lower part of the outer ring component is contacted with the support; the hoop is sleeved on the outer wall of the upper part of the outer ring component; two ends of the hoop are fixedly connected with the support through fasteners; the pipeline is fixedly connected with the support; the invention provides a special damping clamp structure for a rocket pipeline, which is resistant to high and low temperature, corrosion and ageing, and simultaneously designs a quantitative damping clamp position optimization technology to realize the maximization of damping efficiency.
Description
Technical Field
The invention belongs to the field of pipeline system optimization design, and relates to a pipeline vibration reduction hoop structure.
Background
The pipeline system is widely applied to the aerospace industry, the aviation industry and the automobile industry, and mainly realizes the functions of propellant transmission, pneumatic control and the like. The inside of the pipeline structure bears medium pressure, the outside bears complex and severe vibration and impact load, and fatigue fracture caused by factors such as comprehensive processing, assembly, temperature and the like is a common failure mode. The pipeline vibration reduction technology is a key technology for improving the adaptability of the pipeline mechanical environment.
At present, the damping design of rocket pipelines in China stays at the application stage of engineering empirical criteria, a fixed hoop is usually installed on a pipeline to change the frequency characteristic of the pipeline, the coupling with the excitation frequency is avoided, so that the vibration response amplitude reduction of the pipeline is realized, and an annular high-damping non-metal material with large internal loss and internal friction is installed between the inner surface of the hoop and the outer surface of the pipeline to attenuate the vibration energy between the pipeline and a fixed outer structure, so that the vibration resistance of the pipeline is further improved.
The damping material applied on the rocket pipeline is mainly rubber damping pad or glass fiber band, polytetrafluoroethylene and other auxiliary materials. The application of the vibration reduction auxiliary materials is completely based on the engineering experience of an assembly field, the vibration reduction design and construction quality control cannot be quantized, and although the rubber damping pad can be used as a standard product for management, on one hand, the rubber material is easy to age in the aspects of bearing high and low temperature change, corrosion resistance, space radiation resistance and the like, so that the vibration reduction is easy to lose efficacy, and on the other hand, the requirement of long-term storage cannot be met. In addition, the selection of the installation position of the pipeline hoop generally depends on experience, and the optimal vibration reduction effect is not quantitatively evaluated.
Disclosure of Invention
The technical problem solved by the invention is as follows: overcome prior art's not enough, provide a pipeline damping clamp structure, this structure is the special damping clamp structure of rocket pipeline of resistant high low temperature, corrosion-resistant, the ageing resistance, designs the damping clamp position optimization technique of a quantization simultaneously, realizes damping efficiency maximize.
The technical scheme of the invention is as follows:
a pipeline vibration reduction clamp structure comprises a pipeline, a support, a fastener, a clamp, an outer ring component, a damping pad component and an inner ring component; wherein, the pipeline is axially and horizontally arranged; the support is arranged vertically below the pipeline; the inner ring component is coated on the outer wall of the pipeline; the outer ring assembly is coated on the inner ring assembly and the outer wall of the pipeline; the damping pad assembly is arranged between the outer ring assembly and the inner ring assembly; the pipeline is placed on the support, and the outer wall of the lower part of the outer ring component is contacted with the support; the hoop is sleeved on the outer wall of the upper part of the outer ring component; two ends of the hoop are fixedly connected with the support through fasteners; the pipeline is fixedly connected with the support.
The pipeline vibration reduction hoop structure is suitable for the pipeline outer wall with the diameter larger than 60 mm.
At foretell pipeline damping clamp structure, its characterized in that: the outer ring assembly comprises 2 identical outer rings; the outer ring is a semicircular ring structure; 2 outer rings are butted and enclosed to form an annular outer ring assembly; the inner ring assembly comprises 2 identical inner rings; the inner ring is in a semicircular ring structure; 2 inner rings are butted to form an annular inner ring assembly; each inner ring is correspondingly matched with 1 outer ring; the damping pad assembly comprises 2 identical damping pads; the damping cushion is of an arc structure with the radian smaller than a semicircle; each damping cushion is correspondingly arranged between the pair of inner rings and the outer ring.
In the above pipe damping clamp structure, the radius R1 of the outer ring radial outer wall is 41-272.5 mm; the radius R5 of the radial inner wall is 35-259 mm; the axial length L5 is 33 mm-167 mm; the outer wall of the outer ring is provided with an annular outer groove along the circumferential direction; the inner wall of the outer ring is provided with 2 annular inner grooves along the two axial ends; the cross section of the outer ring is of an M-shaped structure.
In the above pipe damping clamp structure, the outer groove is located in the middle of the outer wall of the outer ring; the groove depth L1 of the outer groove is 4-4.5 mm; the groove width L2 is 22-110 mm; the groove depth L3 of the inner groove is 4-13.5 mm; the groove width L4 is 2.5-13 mm; the wall thickness L6 of the outer side wall of the inner groove is 2-8 mm.
In the above pipe damping clamp structure, the diameter R2 of the radially outer wall of the inner ring is 37-267.5 mm; the diameter R3 of the radial inner wall is 30-237.5 mm; the axial length L7 is 30-150 mm; the outer wall of the inner ring is circumferentially provided with an annular groove; the annular groove is arranged in the middle of the outer wall of the inner ring, and the section of the annular groove is rectangular; the section of the inner ring is in a U-shaped structure.
In the above pipe damping clamp structure, the groove depth L8 of the annular groove is 5-31.5 mm; the groove width L9 is 26-130 mm.
In the above pipe vibration damping clamp structure, when assembling, the outer walls of the protrusions at the two axial ends of the annular groove in the inner ring correspondingly extend into the 2 annular inner grooves of the outer ring; the damping pad is sleeved in the annular groove of the inner ring to realize embedded assembly of the inner ring and the outer ring; 2, butting the inner ring and the outer ring into a ring to coat the outer wall of the pipeline; the clamp is of a semi-circular structure; the clamp is embedded in an outer groove of an outer ring at the top of the pipeline; two ends of the hoop are fixedly connected with the support through fasteners; the pipeline is fixedly connected with the support; after the clamp applies pressure; the 2 damping cushions are extended after being compressed, and the butt joint of the 2 damping cushions into an annular damping cushion assembly is realized.
In the above pipeline vibration damping clamp structure, the support, the clamp, the outer ring component and the inner ring component are made of stainless steel or aluminum alloy materials; the damping cushion is made of metal rubber materials formed by metal wires through wire selection, wire winding, stretching, weaving and compression molding.
In the above pipe vibration damping clamp structure, the rigidity of the damping pad is 4 × 105-24×105N/m; the damping is 45-550N/(m/s); the damping ratio is 0.1-0.5; the thickness delta of the damping pad is 3-10 mm; the diameter r of the inner wall is 32-248 mm; the axial length b is 25-120 mm; the proportion coefficient of the arc length of each damping pad to the perimeter is 0.42-0.46.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention designs a damping clamp structure suitable for a rocket large-diameter pipeline, and fills the blank of the design technology of a special and refined damping device for the aerospace pipeline;
(2) the novel special damping structure for the rocket pipeline is designed by using the metal rubber as the main structure for the first time, and has the advantages of high damping efficiency, simplicity in installation, strong universality, good bearing performance, stable storage performance and the like;
(3) the invention provides a design method for representing the damping performance of a damping clamp structure through parameters of rigidity and damping ratio, and the accuracy of quantitative evaluation of the pipeline damping efficiency is improved.
Drawings
FIG. 1 is a schematic view of a clip configuration according to the present invention;
FIG. 2 is a top cross-sectional view of the clip construction of the present invention;
FIG. 3 is a schematic view of the outer ring assembly, damping pad assembly and inner ring assembly of the present invention in combination;
FIG. 4 is a schematic view of the damping pad of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
The invention aims to provide a special damping hoop structure for a rocket pipeline, which is resistant to high and low temperature, corrosion and ageing, and simultaneously designs a quantitative damping hoop position optimization technology to maximize damping efficiency.
As shown in fig. 1 and 2, the pipe vibration damping clamp structure mainly comprises a pipe 1, a support 2, a fastener 3, a clamp 4, an outer ring component 5, a damping pad component 6 and an inner ring component 7; adapted for drift diameter
The medium and large caliber pipelines 1; wherein, the pipeline 1 is axially and horizontally arranged; the support 2 is arranged vertically below the pipeline 1; the inner ring component 7 is coated on the outer wall of the pipeline 1; the outer ring component 5 is coated on the outer walls of the inner ring component 7 and the pipeline 1; the damping pad assembly 6 is arranged between the outer ring assembly 5 and the inner ring assembly 7; the pipeline 1 is placed on the support 2, andthe outer wall of the lower part of the outer ring component 5 is contacted with the support 2; the hoop 4 is sleeved on the upper outer wall of the outer ring component 5; two ends of the hoop 4 are fixedly connected with the support 2 through the fastening piece 3; the pipeline 1 is fixedly connected with the support 2. The support 2, the hoop 4, the outer ring component 5 and the inner ring component 7 are made of stainless steel or aluminum alloy materials; the damping cushion assembly 6 is a porous functional structural damping material, and is a metal rubber material formed by metal wires through wire selection, wire winding, stretching, weaving and compression molding. When the metal wire is deformed during operation, the vibration energy is dissipated through dry friction generated by the metal wire contact, so that the excitation magnitude transmitted to the pipeline is attenuated.
The outer ring assembly 5 comprises 2 identical outer rings 51; the outer ring 51 is a semi-circular structure; 2 outer rings 51 are butted and enclosed to form an annular outer ring assembly 5; the inner ring assembly 7 comprises 2 identical inner rings 71; the inner ring 71 is a semicircular ring structure; 2 inner rings 71 are butted to form an annular inner ring assembly 7; each inner ring 71 is correspondingly matched with 1 outer ring 51; the damping pad assembly 6 comprises 2 identical damping pads 61; the damping pad 61 is an arc structure with the radian smaller than a semicircle; each damping pad 61 is disposed between a pair of inner and outer rings 71 and 51, respectively, as shown in fig. 3. The radius R1 of the radial outer wall of the outer ring 51 is 41-272.5 mm; the radius R5 of the radial inner wall is 35-259 mm; the axial length L5 is 33 mm-167 mm; the outer wall of the outer ring 51 is provided with an annular outer groove 511 along the circumferential direction; the inner wall of the outer ring 51 is provided with 2 annular inner grooves 512 at two ends along the axial direction; the outer ring 51 is implemented to have an M-shaped cross-section. The outer groove 511 is located in the middle of the outer wall of the outer ring 51; the groove depth L1 of the outer groove 511 is 4-4.5 mm; the groove width L2 is 22-110 mm; the groove depth L3 of the inner groove 512 is 4-13.5 mm; the groove width L4 is 2.5-13 mm; the wall thickness L6 of the outer side wall of the inner groove 512 is 2-8 mm.
The diameter R2 of the radial outer wall of the inner ring 71 is 37-267.5 mm; the diameter R3 of the radial inner wall is 30-237.5 mm; the axial length L7 is 30-150 mm; an annular groove 711 is formed in the outer wall of the inner ring 71 along the circumferential direction; the annular groove 711 is arranged in the middle of the outer wall of the inner ring 71, and the section of the annular groove 711 is rectangular; the section of the inner ring 71 is of a U-shaped structure. The groove depth L8 of the annular groove 711 is 5-31.5 mm; the groove width L9 is 26-130 mm.
During assembly, the outer convex walls at the two axial ends of the annular groove 711 in the inner ring 71 correspondingly extend into the 2 annular inner grooves 512 of the outer ring 51; the damping pad 61 is sleeved in the annular groove 711 of the inner ring 71, so that the inner ring 71 and the outer ring 51 are assembled in an embedded manner; 2, the inner ring 71 and the outer ring 51 are butted into a ring to coat the outer wall of the pipeline 1; the clamp 4 is of a semicircular annular structure; the clamp 4 is embedded in an outer groove 511 of the outer ring 51 at the top of the pipeline 1; two ends of the hoop 4 are fixedly connected with the support 2 through the fastening piece 3; the pipeline 1 is fixedly connected with the support 2; after the clamp 4 applies pressure; 2 damping pads 61 are compressed and then extended to realize butt joint to form an annular damping pad assembly 6.
As shown in FIG. 4, damping pad 61 has a stiffness of 4 × 105-24×105N/m; the damping is 45-550N/(m/s); the damping ratio is 0.1-0.5; the thickness delta of the damping pad 61 is 3-10 mm; the diameter r of the inner wall is 32-248 mm; the axial length b is 25-120 mm; the proportional coefficient of the arc length of each damping pad 61 to the perimeter is 0.42-0.46.
The pipeline vibration reduction hoop structure is of an all-metal structure, has the advantages of oil resistance, corrosion resistance, temperature difference resistance, humidity resistance, aging resistance, easiness in maintenance and the like, is suitable for pipelines 1 with the drift diameter of more than or equal to 60mm, and can obviously improve the working reliability of the pipelines in a severe vibration mechanical environment.
When the pipeline selects the vibration reduction hoop, the performance parameters such as the layout of the vibration reduction hoop of the initial pipeline, the rigidity and the damping ratio of the required metal rubber pad and the like are determined according to the pipeline bearing and the actual working mechanical environment conditions, and the performance parameters are designed and realized through the structure and the density of the damping pad and the process parameters such as metal wire materials, wire diameters, screw diameters, initial spiral angles and the like. And (3) designing the sizes of parts except the damping part by considering manufacturability and manufacturing deviation, and selecting a fastener, wherein the pre-deformation amount of the damping part is ensured to be within a design value range during assembly. After the vibration reduction clamping hoop structure is installed on a pipeline, the damping vibration reduction is realized through structural damping generated by deformation of metal rubber in the working process and dry friction generated by a metal wire contact inside an element.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (3)
1. The utility model provides a pipeline damping clamp structure which characterized in that: the pipeline damping device comprises a pipeline (1), a support (2), a fastener (3), a clamp (4), an outer ring component (5), a damping cushion component (6) and an inner ring component (7); wherein, the pipeline (1) is axially and horizontally arranged; the support (2) is arranged vertically below the pipeline (1); the inner ring component (7) is coated on the outer wall of the pipeline (1); the outer ring component (5) is coated on the outer walls of the inner ring component (7) and the pipeline (1); the damping pad assembly (6) is arranged between the outer ring assembly (5) and the inner ring assembly (7); the pipeline (1) is placed on the support (2), and the outer wall of the lower part of the outer ring component (5) is contacted with the support (2); the hoop (4) is sleeved on the outer wall of the upper part of the outer ring component (5); two ends of the hoop (4) are fixedly connected with the support (2) through the fastening piece (3); the pipeline (1) is fixedly connected with the support (2);
the diameter of the outer wall of the pipeline (1) suitable for the hoop structure is larger than 60 mm;
the outer ring assembly (5) comprises 2 identical outer rings (51); the outer ring (51) is a semicircular ring structure; 2 outer rings (51) are butted to form an annular outer ring component (5); the inner ring assembly (7) comprises 2 identical inner rings (71); the inner ring (71) is a semicircular ring structure; 2 inner rings (71) are butted and enclosed to form an annular inner ring assembly (7); each inner ring (71) is correspondingly matched with 1 outer ring (51); the damping pad assembly (6) comprises 2 identical damping pads (61); the damping pad (61) is of an arc structure with the radian smaller than a semicircle; each damping pad (61) is correspondingly arranged between the pair of inner rings (71) and the outer ring (51);
the radius R1 of the radial outer wall of the outer ring (51) is 41-272.5 mm; the radius R5 of the radial inner wall is 35-259 mm; the axial length L5 is 33 mm-167 mm; an annular outer groove (511) is formed in the outer wall of the outer ring (51) along the circumferential direction; the inner wall of the outer ring (51) is provided with 2 annular inner grooves (512) along the two axial ends; the cross section of the outer ring (51) is of an M-shaped structure;
the outer groove (511) is positioned in the middle of the outer wall of the outer ring (51); the groove depth L1 of the outer groove (511) is 4-4.5 mm; the groove width L2 is 22-110 mm; the groove depth L3 of the inner groove (512) is 4-13.5 mm; the groove width L4 is 2.5-13 mm; the wall thickness L6 of the outer side wall of the inner groove (512) is 2-8 mm;
the diameter R2 of the radial outer wall of the inner ring (71) is 37-267.5 mm; the diameter R3 of the radial inner wall is 30-237.5 mm; the axial length L7 is 30-150 mm; an annular groove (711) is formed in the outer wall of the inner ring (71) along the circumferential direction; the annular groove (711) is arranged in the middle of the outer wall of the inner ring (71), and the section of the annular groove (711) is rectangular; the section of the inner ring (71) is of a U-shaped structure;
the groove depth L8 of the annular groove (711) is 5-31.5 mm; the groove width L9 is 26-130 mm;
when the inner ring (71) is assembled, the outer walls of the protrusions at the two axial ends of the annular groove (711) in the inner ring (71) correspondingly extend into the 2 annular inner grooves (512) of the outer ring (51); the damping pad (61) is sleeved in the annular groove (711) of the inner ring (71) to realize embedded assembly of the inner ring (71) and the outer ring (51); 2, the inner ring (71) and the outer ring (51) are butted into a ring to coat the outer wall of the pipeline (1); the clamp (4) is of a semicircular annular structure; the clamp (4) is embedded in an outer groove (511) of an outer ring (51) at the top of the pipeline (1); two ends of the hoop (4) are fixedly connected with the support (2) through the fastening piece (3); the pipeline (1) is fixedly connected with the support (2); after the clamp (4) applies pressure; the 2 damping cushions (61) are compressed and then extended to realize butt joint to form an annular damping cushion assembly (6).
2. The pipe damping clamp structure of claim 1, wherein: the support (2), the clamp (4), the outer ring component (5) and the inner ring component (7) are made of stainless steel or aluminum alloy materials; the damping pad (61) is made of metal rubber materials formed by metal wires through wire selection, wire winding, stretching, weaving and compression molding.
3. A pipe damping clip construction according to claim 2, wherein: the rigidity of the damping pad (61) is 4 x 105-24×105N/m; the damping is 45-550N/(m/s); the damping ratio is 0.1-0.5; the thickness delta of the damping pad (61) is 3-10 mm; the diameter r of the inner wall is 32-248 mm; the axial length b is 25-120 mm; the proportional coefficient of the arc length of each damping pad (61) to the perimeter is 0.42-0.46.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001633.3A CN110822208B (en) | 2019-10-21 | 2019-10-21 | Pipeline damping clamp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001633.3A CN110822208B (en) | 2019-10-21 | 2019-10-21 | Pipeline damping clamp structure |
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| CN110822208A CN110822208A (en) | 2020-02-21 |
| CN110822208B true CN110822208B (en) | 2021-04-13 |
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| CN112013197A (en) * | 2020-09-03 | 2020-12-01 | 北京强度环境研究所 | Pipeline metal shock absorber |
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| NL1033955C2 (en) * | 2007-06-08 | 2008-12-09 | Walraven Holding Bv J Van | Pipe bracket, has profile rings provided in bracket body, and vibration isolation element whose reverse side pipe is provided on circumference of pipe body when bracket is clamped around pipe |
| KR20130084721A (en) * | 2012-01-18 | 2013-07-26 | 강태희 | Supporter for protecting pipe line of ship |
| ITUB20160606A1 (en) * | 2016-02-09 | 2017-08-09 | Saipem Spa | Vibration damper for tubes |
| CN106015448A (en) * | 2016-07-26 | 2016-10-12 | 四川然新材料科技有限公司 | Crankshaft shock absorber structure free of outer ring falling-off |
| CN206770794U (en) * | 2017-05-25 | 2017-12-19 | 安徽盛华管业有限公司 | A kind of outdoor pipeline fixing bracket |
| CN109140054A (en) * | 2018-10-16 | 2019-01-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of steam pipework low frequency vibration isolation installation support hanger structure of high temperature resistant Flouride-resistani acid phesphatase |
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