CN100478602C - Composite bend pipe pressure balance flexibility connection pipe and design method for producing same - Google Patents
Composite bend pipe pressure balance flexibility connection pipe and design method for producing same Download PDFInfo
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- CN100478602C CN100478602C CNB2007103000200A CN200710300020A CN100478602C CN 100478602 C CN100478602 C CN 100478602C CN B2007103000200 A CNB2007103000200 A CN B2007103000200A CN 200710300020 A CN200710300020 A CN 200710300020A CN 100478602 C CN100478602 C CN 100478602C
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Abstract
A mixed mode elbow pressure balancing flexible connecting pipe relates to the pipeline fitting flexible connecting pipe technical field, which comprises a working corrugated pipe assembly, a balancing corrugated pipe assembly, tie rods and an elbow, wherein one end of the working corrugated pipe assembly is connected with an end flange (1), the other end of the working corrugated pipe assembly is connected with the elbow (6) through a pipe nipple (5), the elbow is communicated with the balancing corrugated pipe assembly through an inner pipe (7), and the end flange on one end of the working corrugated pipe assembly is fixedly connected with a flange on an outer pipe of the balancing corrugated pipe assembly through a plurality of tie rods (2). The flexible connecting pipe which integrates the advantages of internal pressure, external pressure, strengthened and non-strengthened corrugated pipes has lower rigidity, higher column stability and smaller size when meeting the compensation requirements at the same time. The flexible connecting pipe which can be applicable to pipelines of ship power equipment and inlets and outlets of various pumps can reduce the rigidity of the prior flexible connecting pipe within limited space, improve the vibration and reduction performance and integral column stability of the prior flexible connecting pipe, and accordingly contribute much to the ship vibration and noise reduction.
Description
Technical field
The present invention relates to the technical field of pipeline fittings flexibility connection pipe, be particularly useful for a kind of interior external pressure composite bend pipe pressure balance flexibility connection pipe at higher equipment of force request and elbow of pipeline place and the design method of making it.
Background technique
At present, bend pipe pressure balance flexibility connection pipe is as pipeline fittings, be widely used in the force request of oil, chemical industry, metallurgy, heat supply and ship power the system higher equipment and pipeline, its flexible element has the displacement of absorption and vibration and noise reducing performance, but and the pressure thrust of balance bellows generation.Usually the operating wave of bend pipe pressure balance type flexibility connection pipe adopts identical structure and waveform with balance wave, presses or outer laminated structure in promptly all adopting, and bellows adopts to be strengthened U-shaped or do not have the reinforcement U-shaped.All adopt the bend pipe pressure balance flexibility connection pipe of external pressures or interior pressure can balance pressure thrust, and have certain compensate for displacement and vibration and noise reducing function; In operating wave and balance wave are all selected for use during laminated structure, because its balance corrugated tube end condition is equivalent to an end and fixes an end laterally steering, the stable wave number that allows of interior compression leg only is 1/2nd of an operating wave, limit the axial displacement of flexibility connection pipe to a great extent, improved the axial rigidity of flexibility connection pipe.All select for use outer laminated structure can cause operating wave assembly external diameter and axial dimension bigger again, be subjected to spatial constraints to be difficult to be provided with.
Summary of the invention
In order to address the above problem, the design method that the invention provides a kind of interior external pressure composite bend pipe pressure balance flexibility connection pipe and make it, when satisfying the compensation requirement, has lower rigidity, higher column stability and less boundary dimension, thereby reduced the integral rigidity of flexibility connection pipe to large extent, reduced active force, improved the vibration and noise reducing performance of flexibility connection pipe equipment.
For achieving the above object, the present invention adopts following technological scheme:
External pressure composite bend pipe pressure balance flexibility connection pipe in described has work bellows component, balance bellows component, pull bar and elbow; One end connecting end flange of work bellows component, the other end is by the pipe nipple connecting bend, elbow is communicated with the balance bellows component by interior pipe, and the end flange of work bellows component one end is fixedlyed connected by several pull bars with the flange on the balance bellows component outer tube.
External pressure composite bend pipe pressure balance flexibility connection pipe in described, the work bellows component connects a work bellows respectively by the two ends of intervalve and forms an end connecting end flange of a work bellows; One end of another work bellows is by the pipe nipple connecting bend.
External pressure composite bend pipe pressure balance flexibility connection pipe in described, the work bellows is set to interior laminated structure, and its two ends are set to strengthen the U type, and middle many ripples adopt does not have the U of reinforcement type.
External pressure composite bend pipe pressure balance flexibility connection pipe in described, the balance bellows component connects limited ring by balance bellows one end, and manages in being fixed on the cylindrical, and the balance bellows the other end connects outer tube, and the termination of outer tube is provided with capping.
External pressure composite bend pipe pressure balance flexibility connection pipe in described, the balance bellows is set to outer laminated structure.
The design method that described interior external pressure composite bend pipe pressure balance flexibility connection pipe is made it is to pass through elbow by the work bellows component, interior pipe is communicated with the balance bellows component, and be fixed together by will work bellows component and balance bellows component of pull bar, the operating wave assembly is made up of two work bellowss and intervalve or is only used a work bellows, each work bellows adopts reinforcement U type near a ripple at two ends, middle many ripples adopt does not have the U of reinforcement type, the work bellows is set to interior laminated structure, make the operating wave assembly in less length, not only can absorb axial displacement but also can absorb bigger lateral displacement, and rigidity is lower, and column stability is higher; The balance bellows of balance bellows component is set to outer laminated structure, is to prevent that balance wave from easily producing the post unstability, reduces the integral rigidity of flexibility connection pipe, reduces the active force to equipment, improves the vibration and noise reducing performance; Its technical requirement on design and performance are as follows:
1, compound flexibility connection pipe size: the wave number operating wave of ripple root diameter 124mm, work wave height 14mm, balance wave height 17, pitch of waves 20mm, the number of plies 4, thickness 0.4mm, work wave number 4+4, balance wave number 10, the restriction of post unstability is 8, balance wave is unlimited, bellows material 304 thin plates.
2, compound flexibility connection pipe performance: compensation ability 20mm and axial rigidity 921.28N/mm.
Because adopt technique scheme, the present invention has superiority as described below:
The design method of being somebody's turn to do interior external pressure composite bend pipe pressure balance flexibility connection pipe and making it breaks through traditional bend pipe pressure balance flexibility connection pipe, laminated structure in the work bellows adopts, the outer laminated structure of balance bellows employing; This project can be widely used in each pipe-line system of ship power equipment and the inlet/outlet of various pumps, in limited space, reduced the rigidity of flexibility connection pipe, improved the vibration and noise reducing performance and the integral post stability of flexibility connection pipe, for the vibration and noise reducing of boats and ships contributes.Simultaneously, this flexibility connection pipe can be widely used in industrial departments such as oil, chemical industry, shipbuilding, electric power, has application promise in clinical practice.
The design method of being somebody's turn to do interior external pressure composite bend pipe pressure balance flexibility connection pipe and making it, strengthening the U bellows by interior pressure, outer laminated structure and reinforcement U-shaped, nothing forms, combine the advantage of interior pressure, external pressure, reinforcement, nothing reinforcement bellows, when satisfying the compensation requirement, has lower rigidity, higher column stability and less boundary dimension, thereby reduced the integral rigidity of flexibility connection pipe largely, reduced active force, improved the vibration and noise reducing performance of flexibility connection pipe equipment.
Description of drawings
Fig. 1 is a bend pipe pressure balance type flexibility connection pipe structural representation;
Among the figure: the 1-end flange; The 2-pull bar; The 3-intervalve; 4a.b-work bellows; The 5-pipe nipple; The 6-elbow; Pipe in the 7-; 8-balance bellows; The 9-outer tube; The 10-limited ring; The 11-capping.
Embodiment
As shown in Figure 1: the external pressure composite bend pipe pressure balance flexibility connection pipe and the method that designs and produces of making it are by elbow 6 by the work bellows component in this, interior pipe 7 is communicated with the balance bellows components, and be fixed together by will work bellows component and balance bellows component of pull bar, the work bellows component is made up of two work bellowss and intervalve or is only used a work bellows, each work bellows adopts reinforcement U type near a ripple at two ends, middle many ripples adopt does not have the U of reinforcement type, the work bellows is set to interior laminated structure, make the work bellows component in less length, not only can absorb axial displacement but also can absorb bigger lateral displacement, and rigidity is lower, and column stability is higher; For preventing that balance wave from easily producing the post unstability, reduce the integral rigidity of flexibility connection pipe, reduce the active force to equipment, the balance bellows 8 of balance bellows component is set to outer laminated structure, improve the vibration and noise reducing performance of flexibility connection pipe, its technical requirement on design and performance are as follows:
1), compound flexibility connection pipe size: the wave number operating wave of ripple root diameter 124mm, work wave height 14mm, balance wave height 17mm, pitch of waves 20mm, the number of plies 4, thickness 0.4mm, work wave number 4+4, balance wave number 10, the restriction of post unstability is 8, balance wave is 304 thin plates for unlimited, bellows material;
2), compound flexibility connection pipe performance: compensation ability 20mm and axial rigidity 921.28N/mm.
External pressure composite bend pipe pressure balance flexibility connection pipe in being somebody's turn to do has work bellows component, balance bellows component, pull bar and elbow; One end connecting end flange 1 of work bellows component, the other end is by pipe nipple 5 connecting bends 6, elbow is communicated with the balance bellows component by interior pipe 7, and the end flange 1 of work bellows component one end is fixedlyed connected by several pull bars 2 with the flange on the balance bellows component outer tube.Its work bellows component connects a work bellows respectively by the two ends of intervalve 3 and forms the end connecting end flange 1 of a work bellows 4a; The end of another work bellows 4b is by pipe nipple 5 connecting bends 6.Its work bellows is set to interior laminated structure, and its two ends are set to strengthen the U type, and middle many ripples adopt does not have the U of reinforcement type.Its balance bellows component connects limited ring 10 by balance bellows 8 one ends, and manages in being fixed on 7 cylindricals, and balance bellows 8 the other ends connect outer tube 9, and the termination of outer tube is provided with capping 11.Its balance bellows 8 is set to outer laminated structure.
Be somebody's turn to do interior external pressure composite bend pipe pressure balance flexibility connection pipe and the general nothing reinforcement U type of making of same material, same parameter, structural type and the bellows waveform parameter such as the table 1 of reinforcement U-shaped flexibility connection pipe,
Table 1 flexibility connection pipe structural type and bellows waveform parameter
Annotate: * 1---and pressing in work bellows and balance bellows are does not have the U-shaped of reinforcement bellows;
* 2---press in work bellows and balance bellows are and strengthen the U-shaped bellows;
* 3---work ripple tube wave height;
* 4---balance ripple tube wave height.
Should strengthen U type, reinforcement U-shaped flexibility connection pipe with the general nothing of making by interior external pressure composite bend pipe pressure balance flexibility connection pipe of same material, same parameter, compensation ability under same working condition and axial rigidity have carried out calculating relatively, result of calculation shows, the displacement compensation capability of composite-curve pressure-balancing type flexibility connection pipe is greatly improved, its axial rigidity has bigger decline, displacement compensation capability and mean rigidity result of calculation such as table 2.
Table 2 flexibility connection pipe compensation ability and axial rigidity
| The flexibility connection pipe structural type | Compensation ability (mm) | Axial rigidity (N/mm) |
| General nothing is strengthened U-shaped | 8.6 | 1713.3 |
| General reinforcement U-shaped | 10 | 2673.4 |
| Compound | 20 | 921.28 |
Claims (5)
1, a kind of interior external pressure composite bend pipe pressure balance flexibility connection pipe is characterized in that: have work bellows component, balance bellows component, pull bar and elbow; One end connecting end flange (1) of work bellows component, the other end is by pipe nipple (5) connecting bend (6), elbow is communicated with the balance bellows component by interior pipe (7), and the end flange (1) of work bellows component one end is fixedlyed connected by several pull bars (2) with the flange on the balance bellows component outer tube.
2, interior external pressure composite bend pipe pressure balance flexibility connection pipe according to claim 1, it is characterized in that: the work bellows component connects a work bellows respectively by the two ends of intervalve (3) and forms an end connecting end flange (1) of a work bellows (4a); One end of another work bellows (4b) is by pipe nipple (5) connecting bend (6).
3, interior external pressure composite bend pipe pressure balance flexibility connection pipe according to claim 2, it is characterized in that: the work bellows is set to interior laminated structure, and its two ends are set to strengthen the U type, and middle many ripples adopt does not have the U of reinforcement types.
4, interior external pressure composite bend pipe pressure balance flexibility connection pipe according to claim 1, it is characterized in that: the balance bellows component connects limited ring (10) by balance bellows (8) one ends, and be fixed on interior pipe (7) cylindrical, balance bellows (8) the other end connects outer tube (9), the termination of outer tube is provided with capping (11), and balance bellows (8) is set to outer laminated structure.
5, a kind of design method of making the described interior external pressure composite bend pipe pressure balance flexibility connection pipe of arbitrary claim, it is characterized in that: be by passing through elbow (6) by the work bellows component, interior pipe (7) is communicated with the balance bellows component, and be fixed together by will work bellows component and balance bellows component of pull bar (2), the work bellows component is made up of two work bellowss and intervalve or is only used a work bellows, each work bellows adopts reinforcement U type near a ripple at two ends, middle many ripples adopt does not have the U of reinforcement type, the work bellows is set to interior laminated structure, makes the work bellows component not only can absorb axial displacement but also can absorb lateral displacement in length; For preventing that balance wave from easily producing the post unstability, reduce the integral rigidity of flexibility connection pipe, reduce the active force to equipment, the balance bellows (8) of balance bellows component is set to outer laminated structure, improve the vibration and noise reducing performance of flexibility connection pipe, its technical requirement on design and performance are as follows:
1), compound flexibility connection pipe size: the wave number operating wave of ripple root diameter 124mm, work wave height 14mm, balance wave height 17mm, pitch of waves 20mm, the number of plies 4, thickness 0.4mm, work wave number 4+4, balance wave number 10, the restriction of post unstability is 8, balance wave is unlimited, bellows material 304 thin plates
2), compound flexibility connection pipe performance: compensation ability 20mm and axial rigidity 921.28N/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007103000200A CN100478602C (en) | 2007-12-05 | 2007-12-05 | Composite bend pipe pressure balance flexibility connection pipe and design method for producing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103000200A CN100478602C (en) | 2007-12-05 | 2007-12-05 | Composite bend pipe pressure balance flexibility connection pipe and design method for producing same |
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| CN101191574A CN101191574A (en) | 2008-06-04 |
| CN100478602C true CN100478602C (en) | 2009-04-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SE534748C2 (en) * | 2010-04-08 | 2011-12-06 | Scania Cv Ab | System including pump, injector and regulator, where control signal to the pump is based on calculated hose stiffness |
| CN101907212B (en) * | 2010-07-21 | 2013-01-02 | 秦皇岛北方管业有限公司 | Externally-pressed and internally-installed universal balanced expansion joint |
| JP5586419B2 (en) * | 2010-10-26 | 2014-09-10 | 東洋エンジニアリング株式会社 | Piping system |
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2007
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| 中华人民共和国国家标准GB/T12777-1999 金属波纹管膨胀节通用技术条件. 哈学基,段玫,常谦,党如战,姜雪桦,陈立苏,汪秀兰,孙镜明，1-34，国家质量技术监督局. 1999 * |
| 波纹管的发展与应用. 马伟，李德雨，钟玉平.河南科技大学学报（自然科学版），第25卷第4期. 2004 |
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| CN101191574A (en) | 2008-06-04 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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