CN202834506U - Internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe - Google Patents
Internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe Download PDFInfo
- Publication number
- CN202834506U CN202834506U CN2012204474889U CN201220447488U CN202834506U CN 202834506 U CN202834506 U CN 202834506U CN 2012204474889 U CN2012204474889 U CN 2012204474889U CN 201220447488 U CN201220447488 U CN 201220447488U CN 202834506 U CN202834506 U CN 202834506U
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- Prior art keywords
- pipe
- connecting pipe
- bellows
- pressure
- type straight
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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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
- F16L51/035—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows for cancelling the axial loading resulting from fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The utility model relates to an internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe and belongs to the technical field of fluid transporting pipelines. The internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe comprises a first connecting pipe and a second connecting pipe. The first connecting pipe is fixedly connected with one end of an external connecting pipe through a first ring plate, and the other end of the external connecting pipe is fixedly connected with a sleeve which is movable sleeved outside the second connecting pipe through a second ring plate. The inner end of the sleeve is connected with a second banded pipe which is fixed on the second connecting pipe through a second corrugated pipe. The second banded pipe is connected with a first banded pipe which is fixed on the first connecting pipe through a first corrugated pipe. The first banded pipe is fixedly connected with one end of a third corrugated pipe which is sleeved outside the first corrugated pipe through a third ring plate. The other end of the third corrugated pipe is fixedly connected with the second banded pipe through a fourth ring plate. A cavity between the first corrugated pipe and the third corrugated pipe is communicated with the atmosphere. A cavity between the first ring plate and the third ring plate is communicated with inner holes of the first connecting pipe and the second connecting pipe. The internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe obviously reduces the whole length of the flexibility connecting pipe, and is stable, reliable and capable of being supported in the air and being embedded in the ground and application is not limited.
Description
Technical field
The utility model relates to a kind of flexible connecting pipe, and especially a kind of interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe belongs to the fluid delivery pipeline technical field.
Background technique
The straight pipe pressure-equalizing flexible connecting pipe is as pipeline fittings, be widely used in the pipe-line system of the industries such as petrochemical industry, metallurgy, electric power, heat supply network, it is stressed etc. be used for to absorb displacement, attenuation vibration, reduction equipment oral area, but and the pressure thrust that produces of balance bellows.
Traditional straight pipe pressure-equalizing flexible connecting pipe can be divided into two large classes: bypass straight pipe pressure-equalizing flexible connecting pipe and straight pipe pressure-equalizing flexible connecting pipe.Bypass straight pipe pressure-equalizing flexible connecting pipe is comprised of two bellowss, radially drainage is to bypass duct during the medium circulation, and then the former pipeline that confluxes back, its shortcoming is that flow resistance is large, the pressure loss is large, breathing pipe is easily torn, Security is low, and processing technology is complicated, therefore can not most amounts use on one section pipeline, use limited.Existing straight pipe pressure-equalizing flexible connecting pipe is comprised of two work bellowss and a balance bellows, and three bellowss are tandem and arrange that product length is longer; Especially in small-bore, compensation during large displacement, along with increasing of ripple quantity, product length is longer, and the post unstability occurs bellows easily, so that loses bearing capacity.In addition, above-mentioned two large class straight pipe pressure-equalizing flexible connecting pipes can only be used for aerial pipeline, can not be used for buried pipeline.
The model utility content
The purpose of this utility model is: the shortcoming for above-mentioned prior art exists, a kind of not only compact structure, reliable and stable is proposed, and interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe that can be buried.
In order to reach above purpose, interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe of the present utility model comprises that first of relative grafting is taken over and the second adapter, described first end of taking over by the first ring flat-plate and externally connected pipe is connected, sleeve pipe outside second takes over is connected the other end of described externally connected pipe by the second ring flat-plate and kink, the inner of described sleeve pipe by the second bellows be fixed on second the second banded penstock of taking over and be connected, described the second banded penstock by the first bellows be fixed on first the first banded penstock of taking over and be connected, described the first banded penstock is connected by an end of the 3rd ring flat-plate the 3rd bellows outer with being enclosed within the first bellows, the other end of described the 3rd bellows is connected by Fourth Ring plate and the second banded penstock, cavity between the described first and the 3rd bellows communicates with atmosphere, and the cavity between the described first and the 3rd ring flat-plate and first and second is taken over endoporus and communicated.
The first adapter of the present utility model and second is taken over can be freely relative flexible, whole flexible connecting pipe can absorption axes to the combination of, lateral displacement and two kinds of displacements, because the first and the 3rd bellows is nested, therefore significantly reduced the length of whole flexible connecting pipe, and the supporting of the ring flat-plate at bellows two ends is reliable and stable, its rational pressure distribution structure can prevent that bellows from producing the post unstability, and the structure that its all bellowss are hidden in the externally connected pipe both can have been maked somebody a mere figurehead it, also can be buried, therefore use and do not limited to.
The utility model further improves, the average diameter of described the first bellows square with square sum of the second bellows average diameter equal the 3rd bellows average diameter square.Can make like this this flexible connecting pipe not produce axial pressure thrust to coupled pipeline.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is the utility model embodiment two structural representation.
Embodiment
Embodiment one
The interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe of present embodiment is a kind of compensate for displacement unitary construction hour that is applied to as shown in Figure 1, comprises that first takes over 1 and second and take over 2, two and take over by the guide shell 13 of liner and relatively peg graft.First takes over 1 end welding by the first ring flat-plate 6 and externally connected pipe 10 is connected, the other end of externally connected pipe 10 is connected in the second sleeve pipe welding of taking over outside 2 by the second ring flat-plate 9 and kink, the inner of this sleeve pipe by the second bellows 4 be fixed on second the second banded penstock of taking on 2 and be connected, this second banded penstock by the first bellows 3 be fixed on first the first banded penstock of taking on 1 and be connected, this first banded penstock is connected by the 3rd ring flat-plate 7 and an end that is enclosed within the 3rd bellows 5 outside the first bellows 3, and the other end of the 3rd bellows 5 is connected by Fourth Ring plate 8 and the second banded penstock.Like this, the first bellows 3, the 3rd ring flat-plate 7, the 3rd bellows 5, Fourth Ring plate 8 have surrounded the first cavity, and the first ring flat-plate 6, externally connected pipe 10, the second ring flat-plate 9, the second bellows 4, Fourth Ring plate 8, the 3rd bellows 5, the 3rd ring flat-plate 7 have surrounded and fall second cavity of " recessed " font.The first cavity between the first bellows 3 and the 3rd bellows 5 communicates with atmosphere by breathing pipe 12, and the second cavity between the first ring flat-plate 6 and the 3rd ring flat-plate 7 communicates with the first and second endoporus of taking over by vent T.
First takes over 1 and second takes over 2 by guide shell 13 formation lineal shape through-flow channel, and it is freely axial displacement each other, reaches the purpose that flexibly connects.The first bellows 3 is in parallel with the 3rd bellows 5, is connected in series with the second bellows 4 again, and the second cavity leads to pressure medium, connects constant pressure outside the chamber, equates with the pressure of the first cavity outside, thereby has consisted of interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe.
Be provided with means of deflation F and steam trap connection S on the externally connected pipe 10.Each bellows 3,4,5 can be random waveform, at crest or trough place stiffening ring is set in case of necessity, and deep floor 11 is set between adjacent fastening member.
Embodiment two
The interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe of present embodiment as shown in Figure 2, its basic structure is identical with embodiment one, the main difference part is, first, second, third bellows consists of by the 2-section pipe by connecting tube 15 series connection (obviously also can be more more piece), form so-called duplex, therefore can the large displacement of compensate for slower.In addition, first takes over and the second flow guide sleeve 14 relative grafting of taking over by overcoat, to prevent the post unstability.
During work, first takes over 1, second takes over 2 and links to each other with on-the-spot pipeline respectively, the displacement that compensation is transmitted thus since each bellows be can pressure-bearing, flexible member that again can activity, so play the desirable effect that flexibly connects.
Facts have proved, above embodiment have absorb that displacement is large, compact dimensions, good stability, little, lightweight, the simple advantage of processing technology of flow resistance, compare with traditional straight pipe pressure-equalizing flexible connecting pipe that same material, same specifications parameter are made, shorten length 25%-35%, weight saving 10%-20%.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe in a kind, comprise that first of relative grafting is taken over and the second adapter, it is characterized in that: described first end of taking over by the first ring flat-plate and externally connected pipe is connected, sleeve pipe outside second takes over is connected the other end of described externally connected pipe by the second ring flat-plate and kink, the inner of described sleeve pipe by the second bellows be fixed on second the second banded penstock of taking over and be connected, described the second banded penstock by the first bellows be fixed on first the first banded penstock of taking over and be connected, described the first banded penstock is connected by an end of the 3rd ring flat-plate the 3rd bellows outer with being enclosed within the first bellows, the other end of described the 3rd bellows is connected by Fourth Ring plate and the second banded penstock, cavity between the described first and the 3rd bellows communicates with atmosphere, and the cavity between the described first and the 3rd ring flat-plate and first and second is taken over endoporus and communicated.
2. interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe according to claim 1 is characterized in that: the average diameter of described the first bellows square with square sum of the second bellows average diameter equal the 3rd bellows average diameter square.
3. interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe according to claim 2 is characterized in that: described the first adapter and the second relative pegging graft of guide shell of taking over by liner.
4. interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe according to claim 2 is characterized in that: described the first adapter and the second relative pegging graft of flow guide sleeve of taking over by overcoat.
5. it is characterized in that according to claim 3 or 4 described interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipes: described each bellows consists of by at least 2-section pipe by the connecting tube series connection.
6. interior external pressure hybrid type straight pipe pressure-equalizing flexible connecting pipe according to claim 5 is characterized in that: be provided with means of deflation and steam trap connection on the described externally connected pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204474889U CN202834506U (en) | 2012-09-04 | 2012-09-04 | Internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204474889U CN202834506U (en) | 2012-09-04 | 2012-09-04 | Internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834506U true CN202834506U (en) | 2013-03-27 |
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ID=47946213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204474889U Withdrawn - After Issue CN202834506U (en) | 2012-09-04 | 2012-09-04 | Internal pressure and external pressure mixed type straight pipe pressure balance flexibility connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202834506U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN105864554A (en) * | 2016-05-18 | 2016-08-17 | 洛阳双瑞特种装备有限公司 | Pipeline-used expansion joint with second-level pressurization structure |
| CN106015812A (en) * | 2016-07-11 | 2016-10-12 | 洛阳双瑞特种装备有限公司 | Straight-through type external pressure straight pipe pressure balancing expansion joint with leakage monitoring function |
-
2012
- 2012-09-04 CN CN2012204474889U patent/CN202834506U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN102818083B (en) * | 2012-09-04 | 2014-12-17 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN105864554A (en) * | 2016-05-18 | 2016-08-17 | 洛阳双瑞特种装备有限公司 | Pipeline-used expansion joint with second-level pressurization structure |
| CN106015812A (en) * | 2016-07-11 | 2016-10-12 | 洛阳双瑞特种装备有限公司 | Straight-through type external pressure straight pipe pressure balancing expansion joint with leakage monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20141217 |
|
| RGAV | Abandon patent right to avoid regrant |