CN213394089U - External pressure type corrugated expansion joint - Google Patents
External pressure type corrugated expansion joint Download PDFInfo
- Publication number
- CN213394089U CN213394089U CN202021996322.3U CN202021996322U CN213394089U CN 213394089 U CN213394089 U CN 213394089U CN 202021996322 U CN202021996322 U CN 202021996322U CN 213394089 U CN213394089 U CN 213394089U
- Authority
- CN
- China
- Prior art keywords
- pipe
- outlet pipe
- expansion joint
- external pressure
- pressure type
- 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.)
- Active
Links
Images
Abstract
An external pressure type corrugated expansion joint is used for absorbing the axial displacement of a pipeline. The corrugated pipe sealing device comprises an inlet pipe (1) and an outlet pipe (9), wherein a working corrugated pipe (6) is sleeved on the outlet pipe, an outer pipe (5) is sleeved on the working corrugated pipe, the left end of the outer pipe is hermetically welded on the inlet pipe, the right end of the outer pipe is hermetically welded with the right end of the working corrugated pipe, and the left end of the working corrugated pipe is hermetically welded on the outlet pipe. The invention has the advantages of simple structure and capability of effectively compensating the thrust generated by the medium pressure.
Description
Technical Field
The invention relates to an external pressure type corrugated expansion joint which is used for absorbing axial displacement of a pipeline.
Background
The external pressure type corrugated expansion joint has larger axial displacement compensation amount, but does not have the function of compensating the thrust generated by the pressure of a medium, so that the application range is limited, and the improvement is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing an external pressure type corrugated expansion joint which not only has larger axial displacement compensation amount, but also can compensate the thrust generated by medium pressure.
The technical scheme includes that the external pressure type corrugated expansion joint comprises an inlet pipe 1 and an outlet pipe 9, a working corrugated pipe 6 is sleeved on the outlet pipe, an outer pipe 5 is sleeved on the working corrugated pipe, the left end of the outer pipe is welded on the inlet pipe in a sealing mode, the right end of the outer pipe is welded with the right end of the working corrugated pipe in a sealing mode, and the left end of the working corrugated pipe is welded on the outlet pipe in a sealing mode.
When the external pressure type corrugated expansion joint is used, the outlet pipe and the inlet pipe are respectively connected with the section of the pipeline in a sealing manner, the medium in the pipeline has pressure, and the medium can compress the working corrugated pipe to enable the outlet pipe to move to the right; one end of the auxiliary corrugated pipe is welded with the outer pipe, the other end of the auxiliary corrugated pipe is welded with the outlet pipe, and the elasticity of the auxiliary corrugated pipe prevents the outlet pipe from moving right to offset the thrust of the medium to the working corrugated pipe. When the pipeline expands with heat and contracts with cold, the outlet pipe and the inlet pipe move relatively to compensate the axial displacement of the pipeline.
The invention has the advantages of simple structure and capability of effectively compensating the thrust generated by the medium pressure.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The reference symbols: 1-inlet pipe, 2-supporting ring, 3-small outer circle part, 4-large inner circle part, 5-outer pipe, 6-working corrugated pipe, 7-positioning ring, 8-auxiliary corrugated pipe and 9-outlet pipe.
Detailed Description
The utility model provides an external pressure type ripple expansion joint, it includes import pipe 1, outlet pipe 9, the cover has work bellows 6 on the outlet pipe, the cover has outer tube 5 on the work bellows, the left end of outer tube and the excircle sealing weld of supporting ring 2, the interior circle sealing weld of supporting ring is on the import pipe, the right-hand member of outer tube and the right-hand member sealing weld of work bellows, the left end sealing weld of work bellows is on the outlet pipe, characterized by, it has supplementary bellows 8 still to overlap on the outlet pipe, the left end and the outer tube welding of supplementary bellows, the right-hand member welding of supplementary bellows is on the outlet pipe.
The structure and the size of the working corrugated pipe are the same as those of the auxiliary corrugated pipe.
When the external pressure type corrugated expansion joint is used, the outlet pipe and the inlet pipe are respectively connected with the section of the pipeline in a sealing manner, the medium in the pipeline has pressure, and the medium can compress the working corrugated pipe to enable the outlet pipe to move to the right; one end of the auxiliary corrugated pipe is welded with the outer pipe, the other end of the auxiliary corrugated pipe is welded with the outlet pipe, and the elasticity of the auxiliary corrugated pipe prevents the outlet pipe from moving right to offset the thrust of the medium to the working corrugated pipe. When the pipeline expands with heat and contracts with cold, the outlet pipe and the inlet pipe move relatively to compensate the axial displacement of the pipeline.
In order to prevent the pipeline medium from self-exciting (generating vortex) in the outer pipe, a flow guide structure is arranged between the inlet pipe and the outlet pipe, the flow guide structure comprises a small outer circle part 3 at the upper right end of the inlet pipe and a large inner circle part 4 at the upper left end of the outlet pipe, and the small outer circle part is inserted into the large inner circle part.
In order to ensure the coaxiality of the inlet pipe and the outlet pipe, the right end of the outer pipe is provided with a positioning ring 7, the inner wall of the positioning ring is sleeved on the outlet pipe in a matching manner, and the excircle of the positioning ring is welded on the outer pipe.
Claims (3)
1. The utility model provides an external pressure type ripple expansion joint, it includes import pipe (1), outlet pipe (9), the cover has work bellows (6) on the outlet pipe, the cover has outer tube (5) on the work bellows, the left end seal weld of outer tube is on the import pipe, the right-hand member of outer tube and the right-hand member seal weld of work bellows, the left end seal weld of work bellows is on the outlet pipe, characterized by, it has supplementary bellows (8) still to overlap on the outlet pipe, the left end and the outer tube weld of supplementary bellows, the right-hand member weld of supplementary bellows is on the outlet pipe.
2. An external pressure type bellow expansion joint according to claim 1 characterized in that the upper right end of the inlet pipe has a small outer circle part (3) and the upper left end of the outlet pipe has a large inner circle part (4), the small outer circle part being inserted in the large inner circle part.
3. External pressure type bellow expansion joint according to claim 1 characterized in that at the right end of the outer tube a positioning ring (7) is placed, the inner wall of which fits over the outlet tube and the outer circle of which is welded to the outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021996322.3U CN213394089U (en) | 2020-09-14 | 2020-09-14 | External pressure type corrugated expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021996322.3U CN213394089U (en) | 2020-09-14 | 2020-09-14 | External pressure type corrugated expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213394089U true CN213394089U (en) | 2021-06-08 |
Family
ID=76216554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021996322.3U Active CN213394089U (en) | 2020-09-14 | 2020-09-14 | External pressure type corrugated expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213394089U (en) |
-
2020
- 2020-09-14 CN CN202021996322.3U patent/CN213394089U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109058641A (en) | A kind of axial corrugated expansion joint | |
| CN213394089U (en) | External pressure type corrugated expansion joint | |
| CN207112202U (en) | Self sealss sleeve expansion joint | |
| CN103775780A (en) | Anti-torsion corrugated compensator | |
| CN213361490U (en) | Axial corrugated expansion joint | |
| CN209068020U (en) | A kind of axial corrugated expansion joint | |
| CN200993292Y (en) | Corrugated sleeve composite compensator | |
| CN207394152U (en) | A kind of bellows | |
| CN105864548A (en) | Pipeline compensator | |
| CN212080491U (en) | Three-way compensator for coal powder pipeline sleeve | |
| JP5637714B2 (en) | Connection structure of vacuum double piping | |
| CN208565923U (en) | A kind of New hot oil line compensator | |
| CN103162055A (en) | Novel multifunctional ripple compensator | |
| CN209743861U (en) | Complementary compensator of anticorrosive ripple sleeve | |
| CN206112375U (en) | Non -maintaining self -steering of external pressure straight tube pressure balance seals expansion joint | |
| CN117146089B (en) | Bellows expansion joint and bellows thereof | |
| CN205991278U (en) | A kind of external pressure straight-pipe pressure balanced expansion joint for absorbing compound displacement | |
| SU1681114A1 (en) | Unit for passing pipe through wall | |
| CN218032049U (en) | Large-displacement high-temperature composite expansion joint | |
| CN209876264U (en) | Novel corrugated pipe compensator | |
| CN211423680U (en) | Straight pipe pressure balance compensator | |
| CN216951101U (en) | Detachable hydraulic cylinder oil pipe structure and hydraulic cylinder | |
| CN218760722U (en) | Hydraulic cylinder valve seat assembly and hydraulic cylinder | |
| CN1405481A (en) | Damping vibration-attenuating expansion joint | |
| CN201184467Y (en) | Rectangle piston type compensator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |