CN102654229A - Pressure balance type expansion joint for bypass straight pipe - Google Patents
Pressure balance type expansion joint for bypass straight pipe Download PDFInfo
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- CN102654229A CN102654229A CN2011100512627A CN201110051262A CN102654229A CN 102654229 A CN102654229 A CN 102654229A CN 2011100512627 A CN2011100512627 A CN 2011100512627A CN 201110051262 A CN201110051262 A CN 201110051262A CN 102654229 A CN102654229 A CN 102654229A
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- balance structure
- hand member
- left end
- nose balance
- pipe
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Abstract
The invention discloses a pressure balance type expansion joint for a bypass straight pipe. The pressure balance type expansion joint comprises an outer pressing type axial compensation structure and an inner pressing type axial compensation structure, which are coaxially sleeved. According to the improvement of the invention, the outer pressing type axial compensation structure and the inner pressing type axial compensation structure are connected with separation boards at two ends; a left separation board and a right separation board respectively divide a left end pipe and a right end pipe into a plurality of channels which are directly communicated with inner cavities of the outer pressing type axial compensation structure and the inner pressing type axial compensation structure, so that a circulation cross area from the end pipes to the inner cavities of the outer pressing type axial compensation structure and the inner pressing type axial compensation structure can be ensured. The pressure balance type expansion joint provided by the invention has the advantages of shorter axial length, low manufacturing cost, small variation in a medium flow direction, small flow resistance and small pressure loss.
Description
Technical field
The present invention relates to a kind of compensation of pipeline device, more particularly, the present invention relates to a kind of bypass straight pipe pressure-equalizing type expansion joint.
Background technique
The straight-through pressure-balancing type expansion joint of bypass can the balance bellows because of self pressure thrust in the various flexible design of pipeline, extensively adopted, bringing into play important function aspect equipment thrust and the reduction support of pipelines cost reducing.Inside and outside pressure combined bypass straight pipe pressure-equalizing type expansion joint be commonly used a kind of in the bypass straight pipe pressure-equalizing type expansion joint; Pressure combined bypass straight pipe pressure-equalizing type expansion joint is formed by fit inside and outside external-compression type nose balance structure and the internal pressure type nose balance structure inside and outside the existing technology, and external-compression type nose balance structure is formed by connecting end socket, the end seal of tube at bellows and two ends; The sealed at both ends that sky is enclosed within the internal pressure type nose balance structure outside the external-compression type nose balance structure is connected on the end pipe outer wall of external-compression type nose balance structure two ends; On the end pore wall of two ends; Be provided with the opening that communicates with internal pressure type nose balance structure inner chamber; When the straight-through pressure-balancing type expansion joint of bypass is worked; Medium flows into the inner chamber of external-compression type nose balance structure, internal pressure type nose balance structure fit from the set opening of entrance point pipe, flows out from the outlet end pipe through the set opening of outlet end pipe then.Usually, total sectional area, the end of the set opening of end pipe managed latus rectum sectional area and external-compression type nose balance structure, the long-pending three of internal pressure type nose balance structure fit intracavity section should be equal basically.In order to reach such designing requirement; On design end tube wall, during opening,, then can reduce end pipe join strength if increase the circumferential size of opening; Under the prerequisite that guarantees end pipe join strength, often guarantee to reach the required sectional area of opening through increasing the opening axial length.Pressure combined bypass straight pipe pressure-equalizing type expansion joint can satisfy the compensation requirement in the pipeline flexible design inside and outside the existing technology; But have certain deficiency, establish opening at the end tube wall and be used for circulation, the media flow direction changes greatly; Thereby flow resistance is big, and the pressure loss is big; Axial length is long, can't use because of the piping erection size restrictions sometimes on the one hand, and cost is also higher on the other hand.
Summary of the invention
The present invention is directed to the deficiency of existing technology, a kind of axial dimension weak point, low cost of manufacture, the medium flow resistance is little, the pressure loss is little bypass straight pipe pressure-equalizing type expansion joint are provided.
The present invention realizes technical goal through following technical proposals.
Bypass straight pipe pressure-equalizing type expansion joint, it comprises the external-compression type nose balance structure and the internal pressure type nose balance structure of coaxial inside and outside fit; Said internal pressure type nose balance structure is tightly connected in proper order from left to right by left end pipe, outward corrugated tube, connecting ring, outer tube and right-hand member pipe and forms; Said external-compression type nose balance structure is made up of the end socket that inner corrugated pipe is connected with sealed at both ends; Said left end inner tube wall right-hand member, right-hand member inner tube wall left end are fixedly connected grommet; Its improvements are: said external-compression type nose balance structure left end is fixedly connected with the left end grommet through the left end dividing plate, and right-hand member is fixedly connected with the right-hand member grommet through the right-hand member dividing plate.
In the said structure, said left end dividing plate, right-hand member dividing plate are the thin plate composite structure that cross fixation is connected in external-compression type nose balance structure, internal pressure type nose balance structure centre axis.
The present invention compared with prior art has following good effect:
1. the internal pressure type nose balance structure of fit is connected with the dividing plate of external-compression type nose balance structure by two ends; Left end dividing plate, right-hand member dividing plate are separated into a plurality of passages that directly communicate with external-compression type nose balance structure and internal pressure type nose balance structure fit inner chamber with left and right end pipe respectively; Be enough to guarantee to hold the sectional area of managing to external-compression type nose balance structure, the circulation of internal pressure type nose balance structure fit inner chamber; Therefore the axial length of expansion joint is shorter, low cost of manufacture.
2. left end dividing plate, right-hand member dividing plate are separated into a plurality of passages that directly communicate with external-compression type nose balance structure and internal pressure type nose balance structure fit inner chamber with left and right end pipe respectively; Make expansion joint in use; The media flow direction changes less; Flow resistance significantly reduces, and the pressure loss also significantly reduces.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is Fig. 1 left view.
Fig. 3 is Fig. 1 A-A sectional view.
Embodiment
Below according to accompanying drawing and combine embodiment that the present invention is described further.
Bypass straight pipe pressure-equalizing type expansion joint shown in the accompanying drawing 1; It comprises the external-compression type nose balance structure and the internal pressure type nose balance structure of coaxial inside and outside fit; Internal pressure type nose balance structure is tightly connected in proper order from left to right by left end pipe 1, outward corrugated tube 3, connecting ring 4, outer tube 5 and right-hand member pipe 8 and forms, and external-compression type nose balance structure is made up of the end socket 6 that inner corrugated pipe 7 is connected with sealed at both ends; Left end pipe 1 inwall right-hand member, right-hand member pipe 8 inwall left ends are fixedly connected grommet 2.The present invention has done following improvement, is provided with left end dividing plate 9 at external-compression type nose balance structure left end and is fixedly connected with left end grommet 2, and right-hand member is provided with right-hand member dividing plate 10 and is fixedly connected with right-hand member grommet 2; Left end dividing plate 9, right-hand member dividing plate 10 are connected in the thin plate composite structure of external-compression type nose balance structure, internal pressure type nose balance structure centre axis for cross fixation.
Left end dividing plate of the present invention 9, right-hand member dividing plate 10 are separated into 4 passages that directly communicate with external-compression type nose balance structure and internal pressure type nose balance structure fit inner chamber 11 with left end pipe 1, right-hand member pipe 8 respectively; Be enough to guarantee to hold the sectional area of managing to inner chamber 11 circulations of external-compression type nose balance structure, internal pressure type nose balance structure fit; Therefore axial length of the present invention is shorter, low cost of manufacture; Left end dividing plate 9, right-hand member dividing plate 10 are separated into a plurality of passages that directly communicate with external-compression type nose balance structure and internal pressure type nose balance structure fit inner chamber 11 with left end pipe 1, right-hand member pipe 8 respectively; Make expansion joint in use; The media flow direction changes less; Flow resistance significantly reduces, and the pressure loss also significantly reduces.
Claims (2)
1. bypass straight pipe pressure-equalizing type expansion joint, it comprises the external-compression type nose balance structure and the internal pressure type nose balance structure of coaxial inside and outside fit; Said internal pressure type nose balance structure is tightly connected in proper order from left to right by left end pipe (1), outward corrugated tube (3), connecting ring (4), outer tube (5) and right-hand member pipe (8) and forms; Said external-compression type nose balance structure is made up of the end socket (6) that inner corrugated pipe (7) is connected with sealed at both ends; Said left end pipe (1) inwall right-hand member, right-hand member pipe (8) inwall left end are fixedly connected grommet (2); It is characterized in that: said external-compression type nose balance structure left end is fixedly connected with left end grommet (2) through left end dividing plate (9), and right-hand member is fixedly connected with right-hand member grommet (2) through right-hand member dividing plate (10).
2. bypass straight pipe pressure-equalizing type expansion joint according to claim 1 is characterized in that: said left end dividing plate (9), right-hand member dividing plate (10) are connected in the thin plate composite structure of external-compression type nose balance structure, internal pressure type nose balance structure centre axis for cross fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100512627A CN102654229A (en) | 2011-03-03 | 2011-03-03 | Pressure balance type expansion joint for bypass straight pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100512627A CN102654229A (en) | 2011-03-03 | 2011-03-03 | Pressure balance type expansion joint for bypass straight pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102654229A true CN102654229A (en) | 2012-09-05 |
Family
ID=46729905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100512627A Pending CN102654229A (en) | 2011-03-03 | 2011-03-03 | Pressure balance type expansion joint for bypass straight pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102654229A (en) |
-
2011
- 2011-03-03 CN CN2011100512627A patent/CN102654229A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120905 |