CN111911726A - Telescopic pipe fitting and connecting pipeline - Google Patents
Telescopic pipe fitting and connecting pipeline Download PDFInfo
- Publication number
- CN111911726A CN111911726A CN202010897436.0A CN202010897436A CN111911726A CN 111911726 A CN111911726 A CN 111911726A CN 202010897436 A CN202010897436 A CN 202010897436A CN 111911726 A CN111911726 A CN 111911726A
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- China
- Prior art keywords
- pipe
- telescopic
- section
- outer pipe
- fixing section
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- 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.)
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to a telescopic pipe fitting and a connecting pipeline, wherein the telescopic pipe fitting comprises an outer pipe, an inner pipe and a sizing sleeve; the inner pipe is provided with a telescopic section which extends into the outer pipe and is in clearance fit with the outer pipe, and the telescopic section can do telescopic motion in the outer pipe; the outer peripheral wall of the front end of the telescopic section is provided with at least one annular groove which is formed by inward sinking, and a sealing ring is arranged in the annular groove; the sizing sleeve is sleeved at the joint of the outer pipe and the inner pipe and is provided with a first fixing section sleeved on the outer pipe and a second fixing section sleeved on the inner pipe, a first locking piece for locking the first fixing section and the outer pipe is arranged on the first fixing section, and a second locking piece for locking the second fixing section and the inner pipe is arranged on the second fixing section, so that the problem that the existing pipeline is inconvenient to install is solved.
Description
Technical Field
The invention relates to the field of connecting pipe fittings, in particular to a telescopic pipe fitting and a connecting pipeline.
Background
The installation of existing pipelines is usually done by first measuring on site and then selecting a corresponding length of pipe to assemble based on the measured length. In the actual installation process, the situation that the prefabricated pipeline is different from the actual installation length often occurs due to various conditions, so that the pipeline needs to be cut or welded on an assembly site to shorten or increase the length of the pipeline, and the strength and the time of field installation are greatly increased; furthermore, since the deviation of the pipe length is often very small, this results in a considerable increase in the difficulty of cutting or welding.
Disclosure of Invention
The invention aims to provide a telescopic pipe fitting and a connecting pipeline, and aims to solve the problem that the existing pipeline is inconvenient to install.
The specific scheme is as follows:
a telescopic pipe fitting comprises an outer pipe, an inner pipe and a sizing sleeve; the inner pipe is provided with a telescopic section which extends into the outer pipe and is in clearance fit with the outer pipe, and the telescopic section can do telescopic motion in the outer pipe; the outer peripheral wall of the front end of the telescopic section is provided with at least one annular groove which is formed by inward sinking, and a sealing ring is arranged in the annular groove; the sizing sleeve is sleeved at the joint of the outer pipe and the inner pipe and is provided with a first fixing section sleeved on the outer pipe and a second fixing section sleeved on the inner pipe, the first fixing section is provided with a first locking piece for locking the first fixing section and the outer pipe, and the second fixing section is provided with a second locking piece for locking the second fixing section and the inner pipe.
Furthermore, the outer pipe is provided with a binding section which is bound inwards at the end part connected with the inner pipe, the telescopic section of the inner pipe is provided with an expansion part which passes through the binding section, and the outer diameter of the expansion part is larger than the inner diameter of the binding section.
Furthermore, the first locking part and the second locking part are both screws, and the first fixing section and the second fixing section are respectively provided with a threaded through hole matched with the corresponding screw.
Furthermore, a first connecting piece and a second connecting piece which are used for being connected with adjacent pipelines are sleeved on the outer pipe and the inner pipe respectively.
Furthermore, a first sealing surface which protrudes along the radial direction of the end part of the outer pipe, which is far away from the inner pipe, is arranged on the end part of the outer pipe, and the outer diameter of the first sealing surface is larger than the inner diameter of the first connecting piece; the end of the inner tube remote from the outer tube is provided with a second sealing surface protruding along the radial direction of the inner tube, and the outer diameter of the second sealing surface is larger than the inner diameter of the second connecting piece.
Further, the first connecting piece is a locking nut or a flange, and the second connecting piece is a locking nut or a flange.
The invention also provides a connecting pipeline, which comprises a fixed pipeline and a telescopic pipeline, wherein the telescopic pipe fitting comprises an outer pipe, an inner pipe and a sizing sleeve; the inner pipe is provided with a telescopic section which extends into the outer pipe and is in clearance fit with the outer pipe, and the telescopic section can do telescopic motion in the outer pipe; the outer peripheral wall of the front end of the telescopic section is provided with at least one annular groove which is formed by inward sinking, and a sealing ring is arranged in the annular groove; the sizing sleeve is sleeved at the joint of the outer pipe and the inner pipe and is provided with a first fixing section sleeved on the outer pipe and a second fixing section sleeved on the inner pipe, the first fixing section is provided with a first locking piece for locking the first fixing section and the outer pipe, and the second fixing section is provided with a second locking piece for locking the second fixing section and the inner pipe; the outer pipe and the inner pipe are respectively sleeved with a first connecting piece and a second connecting piece which are used for being connected with adjacent pipelines; the fixed pipeline comprises a fixed-length pipeline and a third connecting piece arranged on the fixed-length pipeline, and the third connecting piece is used for being connected with an adjacent pipeline.
Furthermore, the outer pipe is provided with a binding section which is bound inwards at the end part connected with the inner pipe, the telescopic section of the inner pipe is provided with an expansion part which passes through the binding section, and the outer diameter of the expansion part is larger than the inner diameter of the binding section.
Furthermore, the first locking part and the second locking part are both screws, and the first fixing section and the second fixing section are respectively provided with a threaded through hole matched with the corresponding screw.
Further, the first connecting piece is a locking nut or a flange, and the second connecting piece is a locking nut or a flange.
Compared with the prior art, the telescopic pipe fitting provided by the invention has the following advantages: the telescopic pipe fitting that this embodiment provided can adjust the length of this telescopic pipe fitting according to the actual conditions at scene when the piping erection, consequently need not to cut or weld current pipeline, has improved the efficiency of pipeline assembly greatly, has also reduced the degree of difficulty of installation simultaneously.
Drawings
Fig. 1 shows a schematic view of a telescopic tube.
Fig. 2 shows an enlarged view at a in fig. 1.
Fig. 3 shows a schematic view of the coupling members at both ends of the telescopic tube being lock nuts.
Fig. 4 shows a schematic view of the coupling members at both ends of the telescopic pipe member being a locking nut and a flange, respectively.
Figure 5 shows a schematic view of the coupling parts at both ends of the telescopic tube being flanges.
Figure 6 shows a schematic of a threaded and screwed connection of pipes.
Fig. 7 shows a schematic view of a flange-to-flange connection pipe.
A schematic of a threaded and flanged connection is shown in fig. 8.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a telescopic pipe member including an outer pipe 1, an inner pipe 2, and a sizing sleeve 3. Wherein the inner tube 2 has the flexible section 21 that stretches into in the outer tube 1, and the internal perisporium clearance fit of the periphery wall of this flexible section 21 and outer tube 1 to the flexible section 21 that makes this inner tube 2 can do concertina movement in outer tube 1.
The outer peripheral wall of the front end of the telescopic section 21 is provided with at least one annular groove 210 which is formed by inward recess, a sealing ring 23 is installed in the annular groove, and the sealing ring 23 is used for sealing a gap between the outer peripheral wall of the telescopic section 21 and the inner peripheral wall of the outer pipe 1 so as to ensure the sealing performance of the joint of the outer pipe 1 and the inner pipe 2.
The sizing sleeve 3 is sleeved at the joint of the outer pipe 1 and the inner pipe 2 and is provided with a first fixing section 31 sleeved on the outer pipe 1 and a second fixing section 32 sleeved on the inner pipe 2, the first fixing section 31 is provided with a first locking part 311 for locking the first fixing section 31 and the outer pipe 1, the second fixing section 32 is provided with a second locking part 321 for locking the second fixing section 32 and the inner pipe 2, so that the sizing sleeve 3 can lock the extending length of the inner pipe 2 relative to the outer pipe 1, and the extending length of the inner pipe 2 cannot be changed due to pressure in the using process of the telescopic pipe fitting.
The telescopic pipe fitting that this embodiment provided can adjust the length of this telescopic pipe fitting according to the actual conditions at scene when the piping erection, consequently need not to cut or weld current pipeline, has improved the efficiency of pipeline assembly greatly, has also reduced the degree of difficulty of installation simultaneously.
In this embodiment, referring to fig. 1 and 2, the outer tube 1 has a converging section 11 converging inward at the end connected with the inner tube 2, and the telescopic section 21 of the inner tube 2 has an expanding section 211 passing through the converging section 11, wherein the outer diameter of the expanding section 211 is larger than the inner diameter of the converging section 11, so that the inner tube 2 cannot be completely removed from the outer tube 1, thereby facilitating the telescopic operation of the telescopic tube.
Wherein, preferably, the outer diameter of the other parts of the inner pipe 2 except the telescopic section 21 is basically consistent with the outer diameter of the outer pipe 1, so that the other parts of the telescopic pipe except the telescopic structure are equal-diameter pipes, and the assembly between the telescopic pipe and other pipes is convenient.
In this embodiment, the first locking member 311 and the second locking member 321 are both screws, the first fixing section 31 and the second fixing section 32 have threaded through holes matched with the screws, the screws are screwed in the corresponding threaded through holes, and the heads of the screws abut against the outer wall of the outer tube 1 or the outer wall of the inner tube 2, so that the extension length of the inner tube 2 relative to the outer tube 1 is fixed. Wherein the screw is preferably a countersunk head screw.
In the present embodiment, referring to fig. 3 and 4, the outer pipe 1 and the inner pipe 2 are respectively sleeved with a first connector 41 and a second connector 42 for connecting with other pipes. Specifically, the end of the outer tube 1 away from the inner tube 2 has a first sealing surface 12 protruding in the radial direction thereof, the outer diameter of the first sealing surface 12 is larger than the inner diameter of the first connecting member 41, and the first sealing surface 12 can be used as a contact surface for the outer tube 1 to make sealing contact with a connected pipeline, and can also be used as a blocking surface for preventing the first connecting member 41 from coming off the outer tube 1.
Similarly, the end surface of the inner pipe 2 away from the outer pipe has a second sealing surface 22 protruding in the radial direction, the outer diameter of the second sealing surface 22 is larger than the inner diameter of the second connecting piece 42, and the second sealing surface 22 can be used as a contact surface for the inner pipe 2 to make sealing contact with a connected pipeline, and can also be used as a blocking surface for preventing the second connecting piece 42 from being separated from the inner pipe 2.
Preferably, the height of the first sealing surface 12 is 1.0-20 mm, and the height of the second sealing surface is 1.0-20 mm.
In this embodiment, the first connecting member 41 and the second connecting member 42 may be the same connecting device, or may be different connecting devices, for example, in fig. 3, the first connecting member 41 and the second connecting member 42 are both lock nuts, and both of them and the connected pipeline are fixed by screwing. For example, in fig. 4, the first connecting member 41 is a lock nut, the second connecting member 42 is a flange, the first connecting member 41 is fixed to the connected pipeline by a threaded connection, and the second connecting member 42 is fixed to the connected pipeline by a flange connection. As shown in fig. 5, the first connecting member 41 and the second connecting member 42 are both flanges, and are fixed to the connected pipelines by flange connection.
Example 2
As shown in fig. 1 to 8, the present embodiment provides a connecting pipe, which includes at least one fixed pipe and at least one telescopic pipe, wherein the telescopic pipe has substantially the same structure as the telescopic pipe provided in embodiment 1, and also includes an outer pipe 1, an inner pipe 2 and a sizing sleeve 3, the inner pipe 2 can be telescopic relative to the outer pipe 1 and is fixed by the sizing sleeve 3, and the specific structure is as in embodiment 1. The outer pipe 1 and the inner pipe 2 are respectively sleeved with a first connecting piece 41 and a second connecting piece 42.
The fixed pipe fitting comprises a fixed-length pipeline and at least one third connecting piece 43 arranged on the fixed-length pipeline, the fixed-length pipeline in the embodiment comprises a straight pipe 60 and an elbow 61, the connection between the straight pipe 60 and the elbow 61 can be realized by directly screwing a locking nut positioned on the straight pipe 60 onto an internal thread structure of the elbow 61 as shown in fig. 6, and thus, the fixed connection between the straight pipe 60 and the elbow 61 is realized; the connection between the straight pipe 60 and the elbow 61 may also be fixedly connected by flanges as shown in fig. 7 and 8.
This third connection 43 on the longlength pipe is intended to be connected to a connection on an adjacent connecting pipe piece, so that a sealed connection between the two connecting pipe pieces is achieved.
As shown in fig. 6, the second connecting member 42 of the telescopic pipe is a locking nut, the third connecting member 43 of the fixed pipe is an internal thread structure on the elbow 61 matched with the locking nut, and the locking nut can be connected to the elbow 61 through threads, so as to realize the connection between the fixed pipe and the telescopic pipe.
As shown in fig. 7 and 8, the second connecting member 42 of the telescopic pipe is a flange structure, the third connecting member 43 of the fixed pipe is another flange structure matched with the flange structure on the elbow 61, and the two flanges are locked with each other by bolts, so as to realize the connection between the fixed pipe and the telescopic pipe.
It should be noted that, in the embodiment, the telescopic pipe fitting and the fixed pipe fitting are connected to each other through an elbow 61, but the embodiment is not limited thereto, and the elbow may be replaced by a connection joint having the same inner hole functional structure, such as a tee joint, a reducing tee joint, a four-way joint, a reducing four-way joint, a 90 ° elbow, a reducing 90 ° elbow, a 45 ° elbow, a straight joint, a reducing straight joint, a loose joint, and the like; at the same time, the telescopic tube can also be connected directly to the straight tube, wherein the opposite third connecting element 43 is arranged directly on the end of the straight tube, so that it can be connected in a sealing manner via the third connecting element 43 and the first connecting element 41 or the second connecting element 42 on the telescopic tube. Because the connecting tube that this embodiment provided comprises fixed pipe fitting and flexible pipe fitting, flexible pipe fitting provides the installation allowance, when the piping erection, can adjust the length of this flexible pipe fitting according to the actual conditions on scene, consequently need not to cut or weld current pipeline, has improved the efficiency of pipeline assembly greatly, has also reduced the degree of difficulty of installation simultaneously.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A telescopic pipe fitting, its characterized in that: comprises an outer pipe, an inner pipe and a sizing sleeve; the inner pipe is provided with a telescopic section which extends into the outer pipe and is in clearance fit with the outer pipe, and the telescopic section can do telescopic motion in the outer pipe; the outer peripheral wall of the front end of the telescopic section is provided with at least one annular groove which is formed by inward sinking, and a sealing ring is arranged in the annular groove; the sizing sleeve is sleeved at the joint of the outer pipe and the inner pipe and is provided with a first fixing section sleeved on the outer pipe and a second fixing section sleeved on the inner pipe, the first fixing section is provided with a first locking piece for locking the first fixing section and the outer pipe, and the second fixing section is provided with a second locking piece for locking the second fixing section and the inner pipe.
2. Telescopic tube according to claim 1, characterized in that: the outer pipe is provided with a binding section which is bound inwards at the end part connected with the inner pipe, the telescopic section of the inner pipe is provided with an expansion part which passes through the binding section, and the outer diameter of the expansion part is larger than the inner diameter of the binding section.
3. Telescopic tube according to claim 1, characterized in that: the first locking part and the second locking part are both screws, and threaded through holes matched with the corresponding screws are formed in the first fixing section and the second fixing section respectively.
4. Telescopic tube according to claim 1, characterized in that: and the outer pipe and the inner pipe are respectively sleeved with a first connecting piece and a second connecting piece which are used for being connected with adjacent pipelines.
5. Telescopic tube according to claim 4, characterized in that: the end part of the outer pipe, which is far away from the inner pipe, is provided with a first sealing surface which protrudes along the radial direction of the outer pipe, and the outer diameter of the first sealing surface is larger than the inner diameter of the first connecting piece; the end of the inner tube remote from the outer tube is provided with a second sealing surface protruding along the radial direction of the inner tube, and the outer diameter of the second sealing surface is larger than the inner diameter of the second connecting piece.
6. Telescopic tube according to claim 4, characterized in that: the first connecting piece is a locking nut or a flange, and the second connecting piece is a locking nut or a flange.
7. A connecting conduit, characterized by: the telescopic pipe fitting comprises an outer pipe, an inner pipe and a sizing sleeve; the inner pipe is provided with a telescopic section which extends into the outer pipe and is in clearance fit with the outer pipe, and the telescopic section can do telescopic motion in the outer pipe; the outer peripheral wall of the front end of the telescopic section is provided with at least one annular groove which is formed by inward sinking, and a sealing ring is arranged in the annular groove; the sizing sleeve is sleeved at the joint of the outer pipe and the inner pipe and is provided with a first fixing section sleeved on the outer pipe and a second fixing section sleeved on the inner pipe, the first fixing section is provided with a first locking piece for locking the first fixing section and the outer pipe, and the second fixing section is provided with a second locking piece for locking the second fixing section and the inner pipe; the outer pipe and the inner pipe are respectively sleeved with a first connecting piece and a second connecting piece which are used for being connected with adjacent pipelines; the fixed pipeline comprises a fixed-length pipeline and a third connecting piece arranged on the fixed-length pipeline, and the third connecting piece is used for being connected with an adjacent pipeline.
8. The connecting duct of claim 7, wherein: the outer pipe is provided with a binding section which is bound inwards at the end part connected with the inner pipe, the telescopic section of the inner pipe is provided with an expansion part which passes through the binding section, and the outer diameter of the expansion part is larger than the inner diameter of the binding section.
9. The connecting duct of claim 7, wherein: the first locking part and the second locking part are both screws, and threaded through holes matched with the corresponding screws are formed in the first fixing section and the second fixing section respectively.
10. The connecting duct of claim 7, wherein: the first connecting piece is a locking nut or a flange, and the second connecting piece is a locking nut or a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897436.0A CN111911726A (en) | 2020-08-31 | 2020-08-31 | Telescopic pipe fitting and connecting pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897436.0A CN111911726A (en) | 2020-08-31 | 2020-08-31 | Telescopic pipe fitting and connecting pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111911726A true CN111911726A (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010897436.0A Pending CN111911726A (en) | 2020-08-31 | 2020-08-31 | Telescopic pipe fitting and connecting pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111911726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645979A (en) * | 2020-12-18 | 2022-06-21 | 丹佛斯有限公司 | Tube assembly, pressure exchanger and reverse osmosis system |
| CN115325449A (en) * | 2022-06-29 | 2022-11-11 | 安徽省天然气开发股份有限公司 | Monitoring device for natural gas pipeline replacement operation |
-
2020
- 2020-08-31 CN CN202010897436.0A patent/CN111911726A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645979A (en) * | 2020-12-18 | 2022-06-21 | 丹佛斯有限公司 | Tube assembly, pressure exchanger and reverse osmosis system |
| CN115325449A (en) * | 2022-06-29 | 2022-11-11 | 安徽省天然气开发股份有限公司 | Monitoring device for natural gas pipeline replacement operation |
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