CN213929902U - Bent pipe and pipeline system - Google Patents
Bent pipe and pipeline system Download PDFInfo
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- CN213929902U CN213929902U CN202022221106.8U CN202022221106U CN213929902U CN 213929902 U CN213929902 U CN 213929902U CN 202022221106 U CN202022221106 U CN 202022221106U CN 213929902 U CN213929902 U CN 213929902U
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Abstract
The embodiment of the utility model relates to a pipeline, in particular to return bend and pipe-line system, the both ends of this return bend are first mouth of pipe terminal surface to, all have the location protrusion on each first mouth of pipe terminal surface, and the location protrusion on the arbitrary first mouth of pipe terminal surface is within this first mouth of pipe terminal surface orthographic projection in this first mouth of pipe terminal surface axis direction. Compared with the prior art, the automatic centering of the elbow and the straight pipe can be realized, so that the centering operation of the two pipes by adopting a positioning tool can be omitted, the interference of the positioning tool to a welding operation area is avoided, and the welding seam formed when the elbow is welded with the straight pipe can be formed at one time, so that the integrity of the welding seam is improved, and the welding seam has higher strength and sealing performance.
Description
Technical Field
The embodiment of the utility model relates to a pipeline, in particular to return bend and pipe-line system.
Background
In the design of pipe-line system, because the medium in the pipeline often needs the switching-over, consequently just need use the return bend when the switching-over, thereby make among the pipe-line system constitute by a plurality of return bends and a plurality of straight tubes, and at the in-process of putting up pipe-line system, in order to guarantee pipe-line system's sealing performance, generally adopt the welded mode to be connected between return bend and the straight tube, nevertheless because before the welding, need carry out heart concatenation with the mouth of pipe terminal surface of return bend and the mouth of pipe terminal surface of straight tube, with the axiality and the sealing performance of assurance two pipelines after the welding. However, the inventor finds that corresponding positioning tools are needed when the alignment splicing is carried out, and the positioning tools are complex to operate during operation, and certain interference can be caused to welding operation areas of two subsequent pipelines by some tools, so that the two pipelines cannot be welded at one time, a welding seam cannot be formed at one time, the integrity of the surface of the pipeline is affected, and the strength and the sealing performance of the welding seam are affected due to the fact that the welding seam cannot be formed at one time.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model aims at providing an elbow pipe and pipe-line system can directly carry out the heart concatenation to elbow pipe and straight tube, avoids adopting the location frock to make elbow pipe and straight tube when carrying out welding operation, its welding seam can one shot forming, make the intensity and the sealing performance of welding seam can improve.
In order to achieve the above object, the utility model discloses an embodiment has designed a return bend, the both ends of return bend are first mouth of pipe terminal surface, each all have the location protrusion on the first mouth of pipe terminal surface, and arbitrary on the first mouth of pipe terminal surface the location protrusion is followed this the ascending orthographic projection of axis direction of first mouth of pipe terminal surface is this within the first mouth of pipe terminal surface.
In addition, the embodiment of the utility model also designs a pipeline system, which comprises a straight pipe and the bent pipe, wherein the two ends of the straight pipe are the second pipe orifice end surfaces, and one of the second pipe orifice end surfaces is welded with one of the first pipe orifice end surfaces of the bent pipe;
and the end surface of each second pipe orifice is respectively provided with a positioning groove which is used for being embedded by the positioning protrusion.
The utility model discloses an embodiment is for prior art, because the first mouth of pipe terminal surface of return bend has the location protrusion, and the orthographic projection of location protrusion on first mouth of pipe terminal surface is within first mouth of pipe terminal surface, carry out offering on the second mouth of pipe terminal surface of welded straight tube simultaneously and return bend and can be positioned the positioning groove of protrusion embedding, consequently, mutually support with the help of location protrusion and positioning groove, can make return bend and straight tube reach the automatic mesh to the heart when the concatenation, thereby can save and adopt the location frock to carry out the heart operation to two pipelines, the interference that the location frock caused to the welding operation district has been avoided, make the welding seam that two pipelines formed when the welding can one shot forming, consequently, the wholeness of welding seam has not only been improved, but also make the welding seam have higher intensity and sealing performance.
In addition, the positioning protrusion on any of the first nozzle end faces is an annular protrusion and is arranged in a surrounding manner along a surrounding path of the first nozzle end face.
In addition, the annular projection on any of the first nozzle end faces includes: the inner side surface and the outer side surface are respectively formed by obliquely extending along the axial direction of the end surface of the first pipe orifice;
the inner side surface and the outer side surface are inclined in opposite directions.
In addition, in the annular protrusion on any end surface of the first pipe orifice, one side of the inner side surface, which is far away from the end surface of the first pipe orifice, and one side of the outer side surface, which is far away from the end surface of the first pipe orifice, are connected to form a head part of the annular protrusion.
In addition, the head part is a sharp part or a circular arc bulge.
In addition, the annular protrusion forms a tooth-shaped structure along the surrounding direction of the annular protrusion.
In addition, a plurality of positioning bulges are arranged on any end face of the first pipe orifice, and the positioning bulges are arranged along the surrounding path of the end face of the first pipe orifice at equal intervals.
In addition, each of the positioning projections on any of the first nozzle end surfaces includes: a first side surface arranged in an axial direction of the first nozzle end surface, and a second side surface opposite to the first side surface;
the first side surface and the second side surface are respectively formed by obliquely extending along the axial direction of the end surface of the first pipe orifice; the first side face and the second side face are inclined in opposite directions.
In addition, the side of the first side surface of each positioning protrusion on any first pipe orifice end surface, which is far away from the first pipe orifice end surface, and the side of the second side surface, which is far away from the first pipe orifice end surface, are connected with each other to respectively form the head part of each positioning protrusion.
Drawings
Fig. 1 is a schematic view of a bent pipe and a straight pipe according to a first embodiment of the present invention during splicing;
FIG. 2 is a side view of the elbow of FIG. 1;
fig. 3 is a schematic structural view of the elbow pipe according to the first embodiment of the present invention, in which the head of the annular protrusion is a sharp part;
fig. 4 is a schematic structural view of the elbow pipe according to the first embodiment of the present invention, in which the head of the annular protrusion is a circular arc protrusion;
fig. 5 is a schematic structural view of the elbow pipe according to the first embodiment of the present invention, in which the annular protrusion has a tooth-shaped structure;
fig. 6 is a schematic view of a bent pipe and a straight pipe of a second embodiment of the present invention when they are spliced;
FIG. 7 is a side view of the elbow of FIG. 6;
fig. 8 is a schematic structural view of a piping system according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The utility model discloses a first embodiment relates to an elbow, as shown in fig. 1 and fig. 2, the both ends of elbow 1 are first mouth of pipe terminal surface 11 to, all have location protrusion 12 on each first mouth of pipe terminal surface 11, and the location protrusion 12 on arbitrary first mouth of pipe terminal surface 11 is at this first mouth of pipe terminal surface 11 ascending orthographic projection of axis, within this first mouth of pipe terminal surface 11.
It can be seen from the above description that, since the first pipe orifice end face 11 of the elbow 1 has the positioning protrusion 12, and the orthographic projection of the positioning protrusion 12 on the first pipe orifice end face 11 is within the first pipe orifice end face 11, when the elbow 1 of the present embodiment is welded with the straight pipe 2, as shown in fig. 1, the positioning protrusion 12 on the elbow 1 can be embedded into the positioning groove 22 on the straight pipe 2 when the elbow 1 is spliced with the straight pipe 2, so that the elbow 1 and the straight pipe 2 can realize automatic centering, thereby omitting the positioning tool to perform centering operation on two pipes, avoiding the interference of the positioning tool to the welding operation area, and enabling the weld formed when the elbow of the present embodiment is welded with the straight pipe to be formed at one time, thereby not only improving the integrity of the weld, but also enables the welding seam to have higher strength and sealing performance.
Specifically, as shown in fig. 1 and 2, in the present embodiment, the positioning projection 12 on any first nozzle end surface 11 is an annular projection that is circumferentially provided along the circumferential path of the first nozzle end surface 11. In the present embodiment, the annular projection on any of the first nozzle end surfaces 11 includes: the inner surface 121 and the outer surface 122, and the inner surface 121 and the outer surface 122 are formed to extend obliquely in the axial direction of the first nozzle end surface 11, respectively, but preferably, in the present embodiment, the inner surface 121 and the outer surface 122 are inclined in opposite directions as shown in fig. 3. The positioning groove 22 formed on the end surface 21 of the second pipe opening of the straight pipe 2 spliced with the bent pipe 1 is an annular groove, and as shown in fig. 1, the first groove wall 221 and the second groove wall 222 of the annular groove can be respectively engaged with the outer side surface 122 and the inner side surface 121 of the annular protrusion when the annular protrusion is embedded into the annular groove, so that the first groove wall 221 and the second groove wall 222 of the annular groove are respectively two inclined surfaces, and when the annular protrusion is embedded into the annular groove, the inner side surface 121 and the outer side surface 122 are respectively engaged with the first groove wall 221 and the second groove wall 222, so that the annular protrusion can be guided, and the bent pipe 1 and the straight pipe 2 can be spliced more easily.
Further, it is worth mentioning that, in the annular projection on any of the first nozzle end surfaces 11, as shown in fig. 3, the side of the inner side surface 121 remote from the first nozzle end surface 11 and the side of the outer side surface 122 remote from the first nozzle end surface 12 are connected to each other, thereby constituting the head 123 of the annular projection. Also, the head 123 may be a sharp portion, or may be a circular arc protrusion as shown in fig. 4, so as to further improve the guiding ability of the annular protrusion when entering the annular groove.
Preferably, as shown in fig. 5, in order to further improve the positioning performance of the bent pipe 1 and the straight pipe 2 after being spliced, the annular protrusion may further form a tooth-shaped structure along the surrounding direction, and the bottom of the corresponding annular groove on the straight pipe 2 is a tooth-shaped surface adapted to the tooth-shaped structure, so that after the first pipe orifice end surface 11 of the bent pipe 1 is spliced with the second pipe orifice end surface 21 of the straight pipe 2, the bent pipe 1 and the straight pipe 2 are prevented from rotating due to a circumferential acting force during welding by virtue of the cooperation of the tooth-shaped structure and the tooth-shaped surface, thereby further improving the quality of the weld joint and ensuring the sealing performance of the weld joint.
The second embodiment of the present invention relates to a bent pipe, and the second embodiment is substantially the same as the first embodiment, and the main difference is that the positioning protrusion 12 in the first embodiment is an annular protrusion, and in this embodiment, as shown in fig. 6 and 7, the positioning protrusion 12 on any first pipe orifice end face 11 is provided with a plurality of protrusions, and each positioning protrusion 12 is arranged along the surrounding path of the first pipe orifice end face 11 at equal intervals. In order to enable the straight pipe 2 to be smoothly spliced with the bent pipe 1, the number of the positioning grooves 22 formed on the second pipe orifice end surface 21 of the straight pipe 2 is the same as that of the positioning protrusions 12, and the positioning grooves correspond to the positioning protrusions only. When the elbow pipe 1 is spliced with the straight pipe 2, each positioning protrusion 12 can be embedded into each positioning groove 22 which is uniquely corresponding, so that the effect of automatic centering of the elbow pipe 1 and the straight pipe 2 can be achieved.
Specifically, in the present embodiment, as shown in fig. 6 and 7, each positioning projection 12 on any of the first nozzle end surfaces 11 includes: a first side surface 124 disposed in the axial direction of the first nozzle end surface 11, and a second side surface 125 opposing the first side surface 124, and the first side surface 124 and the second side surface 125 are formed to extend obliquely in the axial direction of the first nozzle end surface 11, respectively, and, preferably, in the present embodiment, the first side surface 124 and the second side surface 125 are inclined in opposite directions as shown in fig. 6. The first groove wall 223 and the second groove wall 224 of each positioning groove 22 on the second pipe orifice end surface 21 of the straight pipe 2 spliced with the elbow pipe 1 are two inclined surfaces respectively, so that when each positioning protrusion 12 is embedded into each positioning groove 22, the first side surface 124 and the second side surface 125 of each positioning protrusion 12 are matched with the first groove wall 223 and the second groove wall 224 of the uniquely corresponding positioning groove 22 respectively, the positioning protrusion 12 can be guided, and the elbow pipe 1 and the straight pipe 2 can be spliced more easily.
Further, it is worth mentioning that, as shown in fig. 6 and 7, the first side surface 124 of each positioning protrusion 12 on any first nozzle end surface 11 and the side of the second side surface 125 remote from the first nozzle end surface 11 are connected to each other to respectively constitute the head portion 126 of each positioning protrusion 12. Furthermore, the head 126 of each positioning protrusion 12 may be a sharp portion, or may be a circular arc protrusion, so as to further improve the guiding ability of each positioning protrusion 12 when entering into the uniquely corresponding positioning groove 22.
A third embodiment of the present invention relates to a piping system, as shown in fig. 8, including: the straight tube 2, like the elbow 1 according to the first or second embodiment, has two second pipe orifice end surfaces 21 at two ends of the straight tube 2, wherein one of the second pipe orifice end surfaces 21 is welded to one of the first pipe orifice end surfaces 11 of the elbow 1, and each of the second pipe orifice end surfaces 21 is provided with a positioning groove 22 for being embedded by the positioning protrusion 12 on the elbow 1.
It can be seen from the above that, because the first pipe orifice end face 11 of the elbow 1 has the positioning protrusion 12, and the orthographic projection of the positioning protrusion 12 on the first pipe orifice end face 11 is within the first pipe orifice end face 11, and the positioning groove 22 which can be embedded by the positioning protrusion 12 is arranged on the second pipe orifice end face 21 of the straight pipe 2 which is welded with the elbow 1, by means of the mutual matching of the positioning protrusion 12 and the positioning groove 22, the elbow 1 and the straight pipe 2 can achieve the purpose of automatic centering when being spliced, thereby omitting the positioning tool to perform centering operation on the two pipes, avoiding the interference of the positioning tool to the welding operation area, and enabling the welding seam formed by the two pipes during welding to be formed at one time, thereby not only improving the integrity of the welding seam, but also enabling the welding seam to have higher strength and sealing performance.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (8)
1. A bent pipe is provided, wherein two ends of the bent pipe are first pipe orifice end surfaces, and is characterized in that each first pipe orifice end surface is provided with a positioning protrusion, and the positioning protrusion on any first pipe orifice end surface is positioned in the first pipe orifice end surface along the orthographic projection of the first pipe orifice end surface in the axial direction;
the positioning protrusion on any first nozzle end surface is an annular protrusion and is arranged in a surrounding way along the surrounding path of the first nozzle end surface;
the annular projection on any of the first nozzle end faces comprises: the inner side surface and the outer side surface are respectively formed by obliquely extending along the axial direction of the end surface of the first pipe orifice;
the inner side surface and the outer side surface are inclined in opposite directions.
2. The elbow according to claim 1, wherein the annular projection on any of the first nozzle end surfaces has a head portion in which the inner side surface on a side remote from the first nozzle end surface and the outer side surface on a side remote from the first nozzle end surface are joined.
3. The elbow according to claim 2, wherein the head is a sharp portion or a radiused convex portion.
4. The elbow according to any one of claims 1-3, wherein the annular projection is formed with a castellated structure in its circumferential direction.
5. The elbow according to claim 1, wherein a plurality of said positioning projections are provided on any of said first nozzle end surfaces, and wherein said positioning projections are arranged in an equidistant arrangement along a circumferential path of said first nozzle end surface.
6. The elbow according to claim 5, wherein each of the locating projections on any of the first nozzle end faces comprises: a first side surface arranged in an axial direction of the first nozzle end surface, and a second side surface opposite to the first side surface;
the first side surface and the second side surface are respectively formed by obliquely extending along the axial direction of the end surface of the first pipe orifice; the first side face and the second side face are inclined in opposite directions.
7. The elbow according to claim 6, wherein the first side surface and the second side surface of each of the positioning projections on any of the first nozzle end surfaces are connected to each other on a side away from the first nozzle end surface to constitute a head portion of each of the positioning projections, respectively.
8. A pipeline system comprises a straight pipe and is characterized by further comprising: the bent pipe according to any one of claims 1 to 7, wherein the two ends of the straight pipe are second pipe port end faces, and one of the second pipe port end faces is welded with one of the first pipe port end faces of the bent pipe;
and the end surface of each second pipe orifice is respectively provided with a positioning groove which is used for being embedded by the positioning protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221106.8U CN213929902U (en) | 2020-09-30 | 2020-09-30 | Bent pipe and pipeline system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221106.8U CN213929902U (en) | 2020-09-30 | 2020-09-30 | Bent pipe and pipeline system |
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| CN213929902U true CN213929902U (en) | 2021-08-10 |
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| CN202022221106.8U Active CN213929902U (en) | 2020-09-30 | 2020-09-30 | Bent pipe and pipeline system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060635A (en) * | 2021-11-15 | 2022-02-18 | 天津鹏翎集团股份有限公司 | Pipeline welded structure and pipeline subassembly |
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2020
- 2020-09-30 CN CN202022221106.8U patent/CN213929902U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060635A (en) * | 2021-11-15 | 2022-02-18 | 天津鹏翎集团股份有限公司 | Pipeline welded structure and pipeline subassembly |
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