CN103867840A - Double-sealing axial type expansion joint - Google Patents
Double-sealing axial type expansion joint Download PDFInfo
- Publication number
- CN103867840A CN103867840A CN201210542563.4A CN201210542563A CN103867840A CN 103867840 A CN103867840 A CN 103867840A CN 201210542563 A CN201210542563 A CN 201210542563A CN 103867840 A CN103867840 A CN 103867840A
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- CN
- China
- Prior art keywords
- outlet end
- ring
- pipe
- sealing
- expansion joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a double-sealing axial type expansion joint. The double-sealing axial type expansion joint comprises an inlet end pipe, an inlet end ring, a limit ring, a connecting pipe, an external pipe, a corrugated pipe, an outlet end ring and an outlet end pipe; a sealing cover plate is fixedly connected to an external end surface of the outlet end ring; the sealing cover plate is sleeved on the outlet end pipe in an empty mode; a ring groove is formed in an inner hole of the sealing cover plate; a sealing ring and a sealing plate are embedded inside the ring groove; the sealing ring, the sealing plate and an external wall of the outlet end pipe are in tight fit to form into a radial double-sealing structure; abrasion resistant metal layers are arranged on inner walls of the inlet end pipe and the outlet end pipe. The double-sealing axial type expansion joint has the advantages of remarkably improving the sealing reliability due to the radial double-sealing structure and remarkably reducing abrasion of the inner walls of the inlet end pipe and the outlet end pipe and prolonging the service life of the expansion joint due to the fact that the abrasion resistant metal layers are arranged on the inner walls of the inlet end pipe and the outlet end pipe.
Description
Technical field
The present invention relates to a kind of pipe safety device, specifically, the present invention relates to a kind of corrugated pipe for pipeline expansion joint.
Background technique
Single entry outer pressure axial type expansion joint pressure-bearing is high, and in elevated pressures medium transport pipe network, this expansion joint uses more.The bellows inner chamber of existing single entry outer pressure axial type expansion joint is communicated with extraneous, dust, sandstone easily enter wherein, if dust, sandstone are less or sandstone particle is less, normal use impact on single entry outer pressure axial type expansion joint is little, if but some use occasions, dust, sandstone are more or sandstone particle is larger, a large amount of dusts, the sandstone that sandstone or particle are larger enter the bellows inner chamber of single entry outer pressure axial type expansion joint, normal use to single entry outer pressure axial type expansion joint produces adverse influence, even can cause the inefficacy of single entry outer pressure axial type expansion joint.In the patent " external pressure single axial expansion joint " of China Patent Publication No. CN 202203585 U, a kind of corrugated expansion joint being disclosed: comprises entrance point pipe, import end ring, limited ring, adapter, outer tube, bellows, outlet end ring and outlet end pipe, bellows is coaxially fixedly connected with the adapter at two ends, forms bellows collocation structure; Outer coaxial tube empty set is on bellows collocation structure, and import end ring, outlet end ring are coaxially fixedly connected on respectively outer tube two ends, and entrance point pipe is coaxially fixedly connected with import end ring; One pipe nipple of bellows collocation structure is fixedly connected with the interior edge face of outlet end ring, and the other end is taken over and is coaxially fixedly connected with limited ring, and outlet end pipe runs through outlet end ring, bellows collocation structure endoporus, is coaxially fixedly connected with limited ring endoporus; At outlet end ring exterior edge face fixed connection and sealing cover plate, sealed cover empty set is on outlet end pipe; Be provided with annular groove at sealed cover endoporus, embedded sealing ring in annular groove, seal ring and outlet end pipe outer wall drive fit form radial seal structure.This corrugated expansion joint can seal bellows inner chamber, to stop dust, sandstone etc. to enter bellows inner chamber, but owing to only having seal ring one, is difficult to ensure sealing reliability.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose one simple in structure, significantly improve the double seal axial expansion joint of sealing reliability.
The present invention is achieved through the following technical solutions technical goal.
Double seal axial expansion joint, comprises entrance point pipe, import end ring, limited ring, adapter, outer tube, bellows, outlet end ring and outlet end pipe, and described bellows is coaxially fixedly connected with the adapter at two ends, forms bellows collocation structure; Described outer coaxial tube empty set is on bellows collocation structure, and described import end ring, outlet end ring are coaxially fixedly connected on respectively outer tube two ends, and entrance point pipe is coaxially fixedly connected with import end ring; One pipe nipple of described bellows collocation structure is fixedly connected with the interior edge face of outlet end ring, and the other end is taken over and is coaxially fixedly connected with limited ring, and described outlet end pipe runs through outlet end ring, bellows collocation structure endoporus, is coaxially fixedly connected with limited ring endoporus; At outlet end ring exterior edge face fixed connection and sealing cover plate, described sealed cover empty set is on outlet end pipe; Its improvements are: be provided with annular groove at described sealed cover endoporus, and embedded sealing ring and sealing plate in annular groove, described seal ring, sealing plate form radial direction double sealing configuration with outlet end pipe outer wall drive fit.
Further technological scheme of the present invention is: described seal ring is J type rubber seal; Described entrance point pipe, outlet end inner tube wall are provided with antifriction metal (AFM) layer.
Further technological scheme of the present invention is: the antifriction metal (AFM) layer of described entrance point pipe, outlet end inner tube wall is rare earth alloy composite bed.
The present invention compared with prior art, has following good effect:
1. radial direction double sealing configuration, significantly improves sealing reliability.
2. entrance point pipe, outlet end inner tube wall are provided with antifriction metal (AFM) layer, can significantly reduce the wearing and tearing of entrance point pipe, outlet end inner tube wall, extend the working life of expansion joint.
3. the antifriction metal (AFM) layer of entrance point pipe, outlet end inner tube wall is rare earth alloy composite bed, can further improve the wear-resisting property of entrance point pipe, outlet end inner tube wall.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the I part partial enlarged drawing in Fig. 1.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Double seal axial expansion joint shown in the drawings, comprise entrance point pipe 1, import end ring 2, limited ring 3, adapter 4, outer tube 5, bellows 6, outlet end ring 7 and outlet end pipe 10, bellows 6 is coaxially fixedly connected with the adapter 4 at two ends, forms bellows collocation structure; The coaxial empty set of outer tube 5 is on bellows collocation structure, and import end ring 2, outlet end ring 7 are coaxially fixedly connected on respectively outer tube 5 two ends, and entrance point pipe 1 is coaxially fixedly connected with import end ring 2; One pipe nipple 4 of bellows collocation structure is fixedly connected with the interior edge face of outlet end ring 7, and the other end is taken over 4 and is coaxially fixedly connected with limited ring 3, and outlet end pipe 10 runs through outlet end ring 7, bellows collocation structure endoporus, is coaxially fixedly connected with limited ring 3 endoporus; At outlet end ring 7 exterior edge face fixed connection and sealing cover plates 8, sealed cover 8 empty sets are on outlet end pipe 10; Be provided with annular groove at sealed cover 8 endoporus, embedded sealing ring 9 and sealing plate 11 in annular groove, seal ring 9, sealing plate 11 form radial direction double sealing configuration with outlet end pipe 10 outer wall drive fits; In the present embodiment, seal ring 9 is selected J type rubber seal; In order to reduce the wearing and tearing of entrance point pipe 1, outlet end pipe 10 inwalls, entrance point pipe 1, outlet end pipe 10 inwalls are provided with antifriction metal (AFM) layer, and in the present embodiment, the antifriction metal (AFM) layer of entrance point pipe 1, outlet end pipe 10 inwalls is rare earth alloy composite bed.
The present invention can be by adjusting the thickness of sealing plate 11, and adjustment seal ring 9, sealing plate 11 coordinate with outlet end pipe 10 outer walls, ensure sealing effect.Adopt radial direction double sealing configuration, significantly improve sealing reliability.
Entrance point pipe 1 of the present invention, outlet end pipe 10 inwalls are provided with antifriction metal (AFM) layer, can reduce the wearing and tearing of entrance point pipe 1, outlet end pipe 10 inwalls, antifriction metal (AFM) layer is rare earth alloy composite bed, can further improve the wear-resisting property of entrance point pipe 1, outlet end pipe 10 inwalls.
Claims (4)
1. a double seal axial expansion joint, comprise entrance point pipe (1), import end ring (2), limited ring (3), take over (4), outer tube (5), bellows (6), export end ring (7) and outlet end pipe (10), described bellows (6) is coaxially fixedly connected with the adapter (4) at two ends, forms bellows collocation structure; The coaxial empty set of described outer tube (5) is on bellows collocation structure, and described import end ring (2), outlet end ring (7) are coaxially fixedly connected on respectively outer tube (5) two ends, and entrance point pipe (1) is coaxially fixedly connected with import end ring (2); One pipe nipple (4) of described bellows collocation structure is fixedly connected with the interior edge face of outlet end ring (7), the other end is taken over (4) and is coaxially fixedly connected with limited ring (3), described outlet end pipe (10) runs through outlet end ring (7), bellows collocation structure endoporus, is coaxially fixedly connected with limited ring (3) endoporus; At outlet end ring (7) exterior edge face fixed connection and sealing cover plates (8), described sealed cover (8) empty set is on outlet end pipe (10); It is characterized in that: be provided with annular groove at described sealed cover (8) endoporus, embedded sealing ring in annular groove (9) and sealing plate (11), described seal ring (9), sealing plate (11) form radial direction double sealing configuration with outlet end pipe (10) outer wall drive fit.
2. double seal axial expansion joint according to claim 1, is characterized in that: described seal ring (9) is J type rubber seal.
3. double seal axial expansion joint according to claim 1, is characterized in that: described entrance point pipe (1), outlet end pipe (10) inwall are provided with antifriction metal (AFM) layer.
4. double seal axial expansion joint according to claim 3, is characterized in that: the antifriction metal (AFM) layer of described entrance point pipe (1), outlet end pipe (10) inwall is rare earth alloy composite bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542563.4A CN103867840A (en) | 2012-12-15 | 2012-12-15 | Double-sealing axial type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542563.4A CN103867840A (en) | 2012-12-15 | 2012-12-15 | Double-sealing axial type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103867840A true CN103867840A (en) | 2014-06-18 |
Family
ID=50906682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210542563.4A Pending CN103867840A (en) | 2012-12-15 | 2012-12-15 | Double-sealing axial type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103867840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443914A (en) * | 2015-03-13 | 2016-03-30 | 高玉琴 | Three-dimensional sleeve compensator |
| CN112682605A (en) * | 2020-12-30 | 2021-04-20 | 中国电建集团河南省电力勘测设计院有限公司 | Direct-buried corrugated pipe compensator with adjustable connecting pipe installation gradient |
-
2012
- 2012-12-15 CN CN201210542563.4A patent/CN103867840A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443914A (en) * | 2015-03-13 | 2016-03-30 | 高玉琴 | Three-dimensional sleeve compensator |
| CN112682605A (en) * | 2020-12-30 | 2021-04-20 | 中国电建集团河南省电力勘测设计院有限公司 | Direct-buried corrugated pipe compensator with adjustable connecting pipe installation gradient |
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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: 20140618 |