CN102003593A - Corrugated tube and helix tube combined displacement compensator - Google Patents
Corrugated tube and helix tube combined displacement compensator Download PDFInfo
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- CN102003593A CN102003593A CN2010105850432A CN201010585043A CN102003593A CN 102003593 A CN102003593 A CN 102003593A CN 2010105850432 A CN2010105850432 A CN 2010105850432A CN 201010585043 A CN201010585043 A CN 201010585043A CN 102003593 A CN102003593 A CN 102003593A
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- volute
- bellows
- motion compensator
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Abstract
The invention belongs to the technical field of vibration attenuation and noise reduction, and relates to a corrugated tube and helix tube combined displacement compensator, more than one segment of the corrugated tube, more than one segment of the helix tube having large helix angle and more than one segment of straight or bended connection tube are connected together to form a displacement compensator general tube by tube connection segments, two ends of the displacement compensator general tube are respectively provided with an flange for external connections, the invention has the following beneficial effects: the displacement compensator can simultaneously compensate axial, transverse, bended and twisted displacement; the tubes have small size, simple structure and lower cost, so that the displacement compensator can be conveniently used in large scale and adapted for a vehicle exhaust system and a pipeline simultaneously having the axial, transverse, bended and twisted displacement.
Description
Technical field
The invention belongs to the noise reduction technology field, relate to a kind of motion compensator, especially a kind of motion compensator that is combined by the volute of bellows and king bolt lift angle, this compensator also can appropriateness compensation torsional displacement at compensating axial, laterally and in the bending displacement.
Background technique
Corrugated expansion joint claims expansion joint or slip joint again, it is a kind of flexible bit shift compensation element, it utilizes the operative body dilatation of bellows one by one, absorb pipeline because the interface relative position that factors such as mechanical vibration or temperature variation cause changes and the alignment error of pipeline in installation process, in industry, be widely used.Automobile engine exhaust system is also widely applied corrugated expansion joint, with connecting tube, relieve stresses, and improves the quietness of operator cabin; Shown in Fig. 1-2, be subjected to the restriction on physical dimension, weight and the cost, it is relatively simple for structure usually, only comprises the connecting pipeline 2 between bellows 3, flange 1 and bellows 3 and the flange 1.The ripple struction of this compensator also has the screw type of little lift angle (less than 15 °) with ring-like comparatively common, and waveform mostly is U-shaped.
Adjacent tubes in the automobile engine exhaust system except producing relative axial, horizontal and bending displacement, also relative torsional displacement may occur.For example, put motor for vertical, its overturn moment around crankshaft direction may make motor integral body produce torsional vibration by a small margin; Thereby cause being fixed on the gas exhaust piping on the engine body and be suspended between the gas exhaust piping on the chassis, produce relative torsional displacement.And for example: the axis of two adjacent gas exhaust pipings when the Oscillation Amplitude of two pipelines, when phase place has difference, also can be introduced relative torsional displacement as if obvious transversion malposition being arranged or existing than mitre.Above-mentioned torsional displacement is applied directly on the FlexbleJoint that connects two pipes, causes the torsional deflection of compensator self.Therefore, require this compensator to have appropriateness and alleviate the torsional deflection ability.
Yet the conventional screw type corrugated pipe of ring-like or little lift angle has very big torsional stiffness, makes that the ability of bellows alleviation torsional deflection is very low.Thereby when there is relative torsional displacement in two connection pipeline sections, corrugated expansion joint will bear bigger moment of torsion, may cause weak part generation fatigue fractures such as flange and pipe fitting joint, crest/paddy.Be head it off, in compensator, increase by one section non-metallic fabrics compensator section that torsional stiffness is less usually.This method effect is obvious, but because the structure of nonmetal compensator section and preparation process are all complicated, has obviously improved the cost of compensator.Therefore, be necessary to develop a kind of novel motion compensator simple in structure, when keeping conventional bellows motion compensator advantage, also have lower torsional stiffness; Make it at effective compensating axial, laterally and in the bending displacement appropriateness compensation torsional displacement; And can obviously not improve the cost of compensator.
As industrial pipeline connection device commonly used, the patent quantity of motion compensator aspect is a lot.Patent " the flexible pipe " (patent No.: 200380107799.4) designed a kind of flexible steel in flat section tubing that is used for the engine exhaust pipeline, constituted by outward corrugated tube and inner corrugated pipe; This design has improved sound insulation, the effect of heat insulation of pipe fitting, but torsional displacement is not had obvious mitigation.Patent " FlexbleJoint of the scalable rotation of the flange " (patent No.: 200420029877.5) designed the FlexbleJoint of the scalable rotation of a kind of flange, one of them flange can freely stretch on pipeline, rotate, thereby the acquisition installing space, and by the compensation of flange rotation carrying out torsional displacement.Owing to used assemblies such as turn-bucklet assembly, its structure is complicated, size is big and cost is higher.This shows, need further to improve existing corrugated expansion joint, with obtain a kind of simple in structure, effect obviously, be convenient to the solution of large-scale application.
Summary of the invention
But the purpose of this invention is to provide a kind of novel compensating axial, laterally, crooked, torsional displacement and lower-cost bellows and volute combined type motion compensator.
The object of the present invention is achieved like this:
Bellows and volute combined type motion compensator, the volute of the bellows more than a section, the king bolt lift angle more than a section and the connecting tube straight or bending more than a section connect into a motion compensator house steward by the pipe fitting linkage section, and motion compensator house steward's two ends are respectively arranged with the external flange of using.
Above-mentioned connecting tube is independent connection light pipe or adapter of the end of bellows or the adapter of the end of volute.
Above-mentioned bellows is the screw type corrugated pipe of ring-like bellows or minor spiral lift angle.
Be evenly equipped with the U-shaped helical corrugation of convex or concave, left-handed or dextrorotation on the above-mentioned volute, lead angle is 40～50 °.
The spiral section length of above-mentioned volute is the caliber of 1～6 times of volute, circumferentially is evenly equipped with 4～12 helical corrugations, and the ripple height is 1～5 with the ratio of caliber.
The inside diameter ranges of above-mentioned motion compensator is Φ 20～150mm, and wall thickness is 0.2～1mm.
Above-mentioned motion compensator house steward's axis is shaped as " I " shape or serpentine or " L " shape or space serpentine.
Be connected to welding or riveted joint or bonding between above-mentioned bellows, volute, connecting tube, the flange.
Basic principle of the present invention is as follows:
To light pipe, conventional ring-like bellows and king bolt lift angle volute axially, bending and torsional rigidity compare, it is as follows to get structural parameter: bore is that Φ 40mm, wall thickness are 0.6mm, material is 304 stainless steels; The wave height of bellows and volute is 7mm; Bellows pitch of waves 12mm; Volute is the dextrorotation evagination helical corrugation type of 45 ° of lift angles, several 6 of helix.Calculating can get: the ratio of the axial rigidity of three kinds of casts is: light pipe/bellows/volute=12.4/0.1/1, the ratio of flexural rigidity is: light pipe/bellows/volute=31.4/0.4/1, the ratio of torsional rigidity is: light pipe/bellows/volute=10.2/9.3/1.This shows that the torsional rigidity of king bolt lift angle volute is far below light pipe and ring-like bellows, and its axially and flexural rigidity than light pipe remarkable reduction is also arranged.So the motion compensator that bellows and king bolt lift angle volute combine,, has the performance of good compensation torsional displacement at compensating axial, laterally and in the bending displacement.
The invention has the beneficial effects as follows:
1, motion compensator of the present invention simultaneously compensating axial, laterally, bending and torsional displacement; The pipe fitting size is little, simple in structure.
2, the processing of bellows of the present invention and king bolt lift angle volute is all more convenient, cost is lower, is convenient to large-scale application.
3, the present invention is applicable at vehicle exhaust system and has simultaneously axially, laterally, use in the pipeline of bending and torsional displacement.
Description of drawings
Fig. 1 is the schematic perspective view of the bellows motion compensator that automobile exhaust system is commonly used in the prior art.
Fig. 2 is the partial sectional view of Fig. 1.
Fig. 3 is the schematic perspective view of king bolt lift angle evagination volute in the prior art.
Fig. 4 is the partial sectional view of Fig. 3.
Fig. 5 is the schematic perspective view of king bolt lift angle indent volute in the prior art.
Fig. 6 is the partial sectional view of Fig. 5.
Fig. 7 is that a bellows of the present invention and a volute are combined into the structural representation that " I " morpheme is moved compensator.
Fig. 8 is that two bellowss of the present invention and a volute are combined into the structural representation that " I " morpheme is moved compensator.
Fig. 9 is that two bellowss of the present invention and two volutes are combined into the structural representation that " L " morpheme is moved compensator.
Figure 10 is the structural representation of space " S " motion compensator that is combined into of a bellows of the present invention and volute.
Figure 11 is that bellows of the present invention and volute adopt enlarging soldering/bonding linkage structure schematic representation.
Figure 12 is that bellows of the present invention and volute adopt lining soldering/bonding linkage structure schematic representation.
Figure 13 is the user mode figure of the space serpentine motion compensator that is combined into of bellows and volute.
Figure 14 is that bellows and volute are combined into the user mode figure that " L " morpheme is moved compensator.
Figure 15 is the user mode figure of the serpentine motion compensator that is combined into of bellows and volute.
Figure 16 is that bellows and volute are combined into the user mode figure that " L " morpheme is moved compensator.
Embodiment
The present invention is further described with specific embodiment below in conjunction with accompanying drawing:
Below in conjunction with accompanying drawing typical implementation methods of the present invention is described:
This motion compensator is: connecting tube 2 adpting flanges 1 of one section bellows 3 one side, opposite side are connected with an end of another volute 5 by linkage section 4, the connecting tube 2 of the other end of volute 5 connects another flange 6, bellows 3 and volute 5 respectively comprise one section straight (or crooked) light pipe shape connecting tube 2, to be fit to be connected the required distance of pipeline inlet/outlet flange.Under the working state, 3 pairs of inlet/outlet of bellows to axial, laterally and bending displacement compensate, the relative torsional displacement of 5 pairs of inlet/outlet of volute compensates.
Above-mentioned bellows 3 is the screw type corrugated pipe of ring-like bellows or minor spiral lift angle; Be evenly equipped with the U-shaped helical corrugation of evagination (referring to Fig. 3,4) or indent (referring to Fig. 5,6), left-handed or dextrorotation on the above-mentioned volute 5, lead angle is 40～50 °; The spiral section length of above-mentioned volute 5 is the caliber of 1～6 times of volute, circumferentially is evenly equipped with 4～12 helical corrugations, and the ripple height is 1～5 with the ratio of caliber; The inside diameter ranges of above-mentioned motion compensator is Φ 20～150mm, and wall thickness is 0.2～1mm; Above-mentioned motion compensator house steward's axis is shaped as " I " shape or serpentine or " L " shape or space serpentine; Above-mentioned bellows, volute, connecting tube, be connected to welding or riveted joint or bonding between the flange, Figure 11 has provided one of the Placement of the linkage section 4 of bellows and volute: the connecting tube 2 on the bellows 3 inserts sockets in the enlargings 7 on the volutes 5 earlier, carry out soldering (can certainly use riveted joint or bonding) again, Figure 12 provided bellows and volute linkage section 4 Placement two: earlier lining 8 is enclosed within on the connecting tube 2 of bellows 3 or volute 5, again the connecting tube on the bellows 32 is docked with connecting tube 2 on the volute 5, at last lining 8 and connecting tube 2 are carried out soldering (can certainly with riveted joint or bonding).
The Placement of present embodiment is identical with embodiment 1, its difference is: the two ends at volute 5 are connected with one section bellows 3 respectively by linkage section 4, the outer end of bellows 3 be connected with respectively flange 1 and 6, two sections bellowss 3 can make 3 pairs of inlet/outlet of bellows to axial, laterally and bending displacement to compensate scope bigger.
Embodiment 3: " L " shape bellows and volute combined type motion compensator, referring to Fig. 9:
The Placement of present embodiment is identical with embodiment 1, when the inlet/outlet flange axis that is connected pipeline is bigger angle, uses this Placement.
This combination motion compensator comprises the light pipe 2 of two sections bellowss 3, two sections volutes 5, one section bending, four pipe fitting linkage sections 4 and a pair of inlet/outlet flange 1 and 6.Wherein, crooked light pipe 2 is arranged in the middle part of compensator, and volute 5 and bellows 3 are arranged in bilateral symmetry.The bend angle of light pipe 2 is identical with the axis angle that is connected flange.Under the working state, two sections bellowss 3 compensate with bending displacement to axial to inlet/outlet simultaneously; And, the relative lateral displacement of inlet/outlet is compensated by axial and diastrophic combination; Two sections volutes 5 compensate the relative torsional displacement of inlet/outlet respectively, compensate moment of torsion horizontal relatively because of inlet/outlet or that bending displacement produces simultaneously.
Embodiment 4: as embodiment 3 application, referring to Figure 14: with the flange 1 and 6 of two volute 5 outer ends more respectively by flange 1a and 6a external catheter 20 and 21, external catheter 20 is connected with the inlet/outlet of equipment respectively with 21, promptly forms a kind of space " L " morpheme and moves compensator.
Embodiment 5: space serpentine bellows and volute combined type motion compensator, referring to Figure 10:
Be connected the inlet/outlet flange axis lateral alternate of pipeline and be, use this Placement than mitre.
This combination motion compensator comprises one section bellows 3, one section volute 5, two sections crooked light pipes 2, three pipe fitting linkage sections 4 and a pair of inlet/outlet flange 1 and 6.Wherein, an end of two sections crooked light pipes 2 is connected with 6 with inlet/outlet flange 1 respectively, the other end dead in line; Bellows 3 and volute 5 are arranged in the straightway at compensator middle part.Under the working state, 3 pairs of inlet/outlet of bellows to axial, laterally and bending displacement compensate; The relative torsional displacement of volute 5 compensation inlet/outlet compensates moment of torsion horizontal relatively because of inlet/outlet or that bending displacement produces simultaneously.
Embodiment 6: as embodiment 5 application, referring to Figure 13: with the flange 6 of bellows 3 outer ends again by flange 6a external catheter 21, the flange 1 of volute 5 outer ends is again by flange 1a external catheter 20, external catheter 20,21 is connected with the inlet/outlet of equipment respectively, promptly forms a kind of space serpentine motion compensator.
Embodiment 7: serpentine bellows and volute combined type motion compensator, referring to Figure 15:
This combination motion compensator comprises two sections bellowss 3, one section volute 5, two pipe fitting linkage sections 4 and a pair of inlet/outlet flange 1 and 6.Wherein, two sections bellowss 3 are arranged in volute 5 two ends, and two sections bellowss 3 and turnover, mouthful flange 1 and 6 joint respectively comprise one section straight light pipe section 2, to be fit to be connected the required distance of pipeline inlet/outlet flange.Under the installment state, two sections bellowss 3 are crooked simultaneously, to be fit to the topology requirement of inlet/outlet axis and lateral alternate.Under the working state, two sections bellowss 3 are compensating with bending displacement inlet/outlet to axial simultaneously; And the combination that is bent and deformed compensates the relative lateral displacement of inlet/outlet; Volute 5 also compensates because of the moment of torsion that relative lateral displacement produces inlet/outlet in the relative torsional displacement of compensation inlet/outlet; This embodiment's application: the flange 1,6 of bellows 3 outer ends is passed through flange 1a, 6a external catheter 20,21 respectively, and external catheter 20,21 is connected with the inlet/outlet of equipment respectively, promptly forms a kind of serpentine motion compensator.
Embodiment 8: as embodiment 1 application, referring to Figure 16: with the flange 1 of bellows 3 outer ends again by flange 1a external catheter 20, the flange 6 of volute 5 outer ends is again by flange 6a external catheter 21, external catheter 20,21 is connected with the inlet/outlet of equipment respectively, promptly form a kind of " L " shape bellows and volute combined type motion compensator, this structure also can be passed through flange 1a on embodiment 2 basis, 6a external catheter 20,21 is realized.
Among the foregoing description 2-8: described bellows 3 is the screw type corrugated pipe of ring-like bellows or minor spiral lift angle; Be evenly equipped with the U-shaped helical corrugation of convex or concave, left-handed or dextrorotation on the described volute 5, lead angle is 40～50 °, and spiral section length is the caliber of 1～6 times of volute, circumferentially is evenly equipped with 4～12 helical corrugations, and the ripple height is 1～5 with the ratio of caliber; The inside diameter ranges of described motion compensator is Φ 20～150mm, and wall thickness is 0.2～1mm; Being connected between described bellows, volute, connecting tube, the flange welded for example soldering, can certainly be by riveted joint or bonding the connection.
The foregoing description is preferred embodiment of the present invention only, is not to limit protection scope of the present invention according to this, so: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (8)
1. bellows and volute combined type motion compensator, it is characterized in that: the volute of the bellows more than a section, the king bolt lift angle more than a section and the connecting tube straight or bending more than a section connect into a motion compensator house steward by the pipe fitting linkage section, and motion compensator house steward's two ends are respectively arranged with the external flange of using.
2. bellows according to claim 1 and volute combined type motion compensator is characterized in that: described connecting tube is independent connection light pipe or adapter of the end of bellows or the adapter of the end of volute.
3. bellows according to claim 1 and volute combined type motion compensator is characterized in that: described bellows is the screw type corrugated pipe of ring-like bellows or minor spiral lift angle.
4. bellows according to claim 1 and volute combined type motion compensator is characterized in that: be evenly equipped with the U-shaped helical corrugation of convex or concave, left-handed or dextrorotation on the described volute, lead angle is 40～50 °.
5. bellows according to claim 4 and volute combined type motion compensator, it is characterized in that: the spiral section length of described volute is the caliber of 1～6 times of volute, circumferentially be evenly equipped with 4～12 helical corrugations, the ripple height is 1～5 with the ratio of caliber.
6. bellows according to claim 1 and volute combined type motion compensator is characterized in that: the inside diameter ranges of described motion compensator is Φ 20～150mm, and wall thickness is 0.2～1mm.
7. bellows according to claim 1 and volute combined type motion compensator is characterized in that: described motion compensator house steward's axis is shaped as " I " shape or serpentine or " L " shape or space serpentine.
8. bellows according to claim 1 and volute combined type motion compensator is characterized in that: be connected to welding or riveted joint or bonding between described bellows, volute, connecting tube, the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105850432A CN102003593A (en) | 2010-12-13 | 2010-12-13 | Corrugated tube and helix tube combined displacement compensator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105850432A CN102003593A (en) | 2010-12-13 | 2010-12-13 | Corrugated tube and helix tube combined displacement compensator |
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| CN102003593A true CN102003593A (en) | 2011-04-06 |
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| CN2010105850432A Pending CN102003593A (en) | 2010-12-13 | 2010-12-13 | Corrugated tube and helix tube combined displacement compensator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182896A (en) * | 2011-04-19 | 2011-09-14 | 冯亿生 | Practical vibration isolating mechanism |
| CN102966421A (en) * | 2012-12-13 | 2013-03-13 | 无锡压缩机股份有限公司 | Exhaust compensation pipe structure of diesel engine |
| CN106122659A (en) * | 2016-08-19 | 2016-11-16 | 李中来 | Combined pipe fitting and the circumference process equipment of corrugated tube thereof and processing method |
| CN108050332A (en) * | 2017-12-12 | 2018-05-18 | 中国舰船研究设计中心 | A kind of steam pipework thermal compensation device and its design method with heat shock resistance effect |
| CN108119713A (en) * | 2017-12-19 | 2018-06-05 | 浙江方圆机电设备制造有限公司 | A kind of combined type flexible Pressuretight sylphon bellows |
| CN110985801A (en) * | 2019-12-19 | 2020-04-10 | 安徽威迈光机电科技有限公司 | High-low temperature pipeline compensator assembly |
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| US5682924A (en) * | 1994-06-30 | 1997-11-04 | Steere Enterprises, Inc. | Clean air ducts and methods for the manufacture thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182896A (en) * | 2011-04-19 | 2011-09-14 | 冯亿生 | Practical vibration isolating mechanism |
| CN102966421A (en) * | 2012-12-13 | 2013-03-13 | 无锡压缩机股份有限公司 | Exhaust compensation pipe structure of diesel engine |
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| CN106122659A (en) * | 2016-08-19 | 2016-11-16 | 李中来 | Combined pipe fitting and the circumference process equipment of corrugated tube thereof and processing method |
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| CN108050332A (en) * | 2017-12-12 | 2018-05-18 | 中国舰船研究设计中心 | A kind of steam pipework thermal compensation device and its design method with heat shock resistance effect |
| CN108050332B (en) * | 2017-12-12 | 2019-10-25 | 中国舰船研究设计中心 | A kind of steam pipework thermal compensation device and its design method with heat shock resistance effect |
| CN108119713A (en) * | 2017-12-19 | 2018-06-05 | 浙江方圆机电设备制造有限公司 | A kind of combined type flexible Pressuretight sylphon bellows |
| CN110985801A (en) * | 2019-12-19 | 2020-04-10 | 安徽威迈光机电科技有限公司 | High-low temperature pipeline compensator assembly |
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Application publication date: 20110406 |