CN104033686A - Bend two-way self-limiting corrugated expansion joint - Google Patents
Bend two-way self-limiting corrugated expansion joint Download PDFInfo
- Publication number
- CN104033686A CN104033686A CN201410187219.7A CN201410187219A CN104033686A CN 104033686 A CN104033686 A CN 104033686A CN 201410187219 A CN201410187219 A CN 201410187219A CN 104033686 A CN104033686 A CN 104033686A
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- CN
- China
- Prior art keywords
- elbow
- expansion joint
- mounting assembly
- bearing pin
- fixedly connected
- 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
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention discloses a bend two-way self-limiting corrugated expansion joint which comprises an expansion joint body, bends, support assemblies, nuts and pull rods. The support assemblies are positioned on the back faces of the bends at the two ends in a riding mode respectively and are fixedly connected with the bends. The support assemblies at the two ends are connected through the pull rods and the nuts. Hinge pins I are arranged on the back faces of the bends, and hinge pins II are arranged on the side faces of the bends. Bend connecting plates of the support assemblies are arranged on the hinge pins I in a sleeved mode and are limited by baffle rings I, and side plates of the support assemblies are arranged on the hinge pins II in a sleeved mode and are limited by baffle rings II. The bend two-way self-limiting corrugated expansion joint is further characterized in that the bend connecting plate of each support assembly is in clearance fit with the corresponding hinge pin I, the side plate of each support assembly is in clearance fit with the corresponding hinge pin II, the baffle rings I are fixedly connected to the hinge pins I in a welding mode, and the baffle rings II are fixedly connected to the hinge pins II in a welding mode. The bend two-way self-limiting corrugated expansion joint is small in welding stress, small in distortion relative to the support assemblies, and long in service life.
Description
Technical field
The present invention relates to pipeline compensator, relate in particular to a kind of lateral mode corrugated expansion joint.
Background technique
The mouth of pipe that the first dehydrogenation reactor in vinyl benzene complete set technology is connected with the second dehydrogenation reactor is all vertically upward, the normal horizontal compensating type expansion joint of large pull bar that adopts compensates the thermal expansion displacement difference between the first dehydrogenation reactor and the second dehydrogenation reactor, and the pull bar of the horizontal compensating type expansion joint of this large pull bar is arranged on pipe nipple.But because the mouth of pipe of dehydrogenation reactor is vertically upward, must there be two elbows to connect horizontal pipeline.The lateral mode corrugated expansion joint for connecting the first dehydrogenation reactor and the second dehydrogenation reactor of prior art comprises expansion joint, elbow, mounting assembly, nut, pull bar, mounting assembly is fixedly connected by welding on elbow, and the mounting assembly at two ends connects by pull bar, nut.The lateral mode corrugated expansion joint of this structure can meet the compensation needs of the thermal expansion displacement difference between the first dehydrogenation reactor and the second dehydrogenation reactor, but there is lower column defects: because mounting assembly entirety is fixedly connected by welding on elbow, bonding area is large, welding deformation is large, and the larger welding stress of generation, the mounting assembly at two ends is likely worked the in the situation that of distortion, affect the normal use of lateral mode corrugated expansion joint, the working life of lateral mode corrugated expansion joint is short.
Summary of the invention
This is practical for the deficiencies in the prior art, proposes a kind of welding stress that can significantly reduce lateral mode corrugated expansion joint, thereby it is two-way from spacing corrugated expansion joint significantly to improve the elbow of behaviour in service of corrugated expansion joint.
The present invention is achieved through the following technical solutions technical goal.
Elbow is two-way from spacing corrugated expansion joint, comprises expansion joint, elbow, mounting assembly, nut, pull bar; Described expansion joint is connected between the elbow of two ends, forms collocation structure; Described mounting assembly is symplex structure, comprises middle elbow connecting plate, is fixedly connected on the side plate of elbow connecting plate both sides and is longitudinally fixedly connected on the pull bar connecting plate on side plate; Described mounting assembly rides in respectively the elbow back side at two ends, and is fixedly connected with elbow; The mounting assembly at two ends connects by pull bar, nut; Its improvements are: the described elbow back side is provided with bearing pin I, and side is provided with bearing pin II; Described mounting assembly elbow connecting plate is sleeved in bearing pin I, and spacing by baffle ring I; Described mounting assembly side plate is sleeved in bearing pin II, and spacing by baffle ring II.
In said structure, described mounting assembly elbow connecting plate and bearing pin I Spielpassung; Described mounting assembly side plate and bearing pin II Spielpassung.
In said structure, described baffle ring I is fixedly connected by welding in bearing pin I; Described baffle ring II is fixedly connected by welding in bearing pin II.
The present invention compared with prior art, has following good effect:
1. bearing pin is fixedly connected by welding on elbow, mounting assembly is sleeved on bearing pin, and be fixedly connected on elbow by bearing pin, significantly like this reduce the bonding area on elbow, thereby significantly reduce welding stress, significantly reduce the distortion of the relative mounting assembly causing because of welding, significantly improve the behaviour in service of corrugated expansion joint, the working life of significant prolongation corrugated expansion joint.
2. mounting assembly elbow connecting plate and bearing pin I Spielpassung, mounting assembly side plate and bearing pin II Spielpassung, can adequate compensation mounting assembly and elbow between manufacture, alignment error, further reduce the distortion of relative mounting assembly, further improve the behaviour in service of corrugated expansion joint.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the B-B sectional view in Fig. 2.
Fig. 4 is the I part enlarged diagram in Fig. 3.
Fig. 5 is the II part enlarged diagram in Fig. 2.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Elbow shown in accompanying drawing is two-way from spacing corrugated expansion joint, comprises expansion joint 4, elbow 3, mounting assembly 5, nut 1, pull bar 2; Expansion joint 4 is connected between two ends elbow 3, forms collocation structure; Mounting assembly 5 is symplex structure, comprises middle elbow connecting plate 5.2, is fixedly connected on the side plate 5.1 of elbow connecting plate 5.2 both sides and is longitudinally fixedly connected on the pull bar connecting plate 5.3 on side plate 5.1; Mounting assembly 5 rides in respectively elbow 3 back sides at two ends; The mounting assembly 5 at two ends connects by pull bar 2, nut 1; Elbow 3 back sides are provided with bearing pin I 7, and side is provided with bearing pin II 8; Mounting assembly 5 elbow connecting plates 5.2 are sleeved in bearing pin I 7, and spacing by baffle ring I 6, in the present embodiment, and mounting assembly 5 elbow connecting plates 5.2 and bearing pin I 7 Spielpassung, baffle ring I 6 is fixedly connected by welding in bearing pin I 7; Mounting assembly 5 side plates 5.1 are sleeved in bearing pin II 8, and spacing by baffle ring II 9; In the present embodiment, mounting assembly 5 side plates 5.1 and bearing pin II 8 Spielpassung, baffle ring II 9 is fixedly connected by welding in bearing pin II 8.
The present invention is applied to large diameter high-temperature pipe system, not only can be used for the dehydrogenation reaction zone of styrene device, can also be used for the similar pipeline rout position of other large-scale petrochemical device.
Claims (3)
1. elbow is two-way from a spacing corrugated expansion joint, comprises expansion joint (4), elbow (3), mounting assembly (5), nut (1), pull bar (2); Described expansion joint (4) is connected between two ends elbow (3), forms collocation structure; Described mounting assembly (5) is symplex structure, comprises middle elbow connecting plate (5.2), is fixedly connected on the side plate (5.1) of elbow connecting plate (5.2) both sides and is longitudinally fixedly connected on the pull bar connecting plate (5.3) on side plate (5.1); Described mounting assembly (5) rides in respectively elbow (3) back side at two ends, and is fixedly connected with elbow (3); The mounting assembly (5) at two ends connects by pull bar (2), nut (1); It is characterized in that: described elbow (3) back side is provided with bearing pin I (7), and side is provided with bearing pin II (8); It is upper that described mounting assembly (5) elbow connecting plate (5.2) is sleeved on bearing pin I (7), and spacing by baffle ring I (6); It is upper that described mounting assembly (5) side plate (5.1) is sleeved on bearing pin II (8), and spacing by baffle ring II (9).
2. two-way from spacing corrugated expansion joint according to the elbow described in claims 1, it is characterized in that: described mounting assembly (5) elbow connecting plate (5.2) and bearing pin I (7) Spielpassung; Described mounting assembly (5) side plate (5.1) and bearing pin II (8) Spielpassung.
3. two-way from spacing corrugated expansion joint according to the elbow described in claims 1 or 2, it is characterized in that: described baffle ring I (6) is fixedly connected by welding in bearing pin I (7); Described baffle ring II (9) is fixedly connected by welding in bearing pin II (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187219.7A CN104033686A (en) | 2014-05-06 | 2014-05-06 | Bend two-way self-limiting corrugated expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187219.7A CN104033686A (en) | 2014-05-06 | 2014-05-06 | Bend two-way self-limiting corrugated expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033686A true CN104033686A (en) | 2014-09-10 |
Family
ID=51464580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410187219.7A Pending CN104033686A (en) | 2014-05-06 | 2014-05-06 | Bend two-way self-limiting corrugated expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033686A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989905A (en) * | 2015-07-10 | 2015-10-21 | 秦皇岛北方管业有限公司 | Compactly-combined expansion joint with inlet and outlet perpendicular to each other |
-
2014
- 2014-05-06 CN CN201410187219.7A patent/CN104033686A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989905A (en) * | 2015-07-10 | 2015-10-21 | 秦皇岛北方管业有限公司 | Compactly-combined expansion joint with inlet and outlet perpendicular to each other |
| CN104989905B (en) * | 2015-07-10 | 2017-05-03 | 秦皇岛北方管业有限公司 | Compactly-combined expansion joint with inlet and outlet perpendicular to each other |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140910 |