CN217208259U - Pipeline expansion joint - Google Patents
Pipeline expansion joint Download PDFInfo
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- CN217208259U CN217208259U CN202123128001.9U CN202123128001U CN217208259U CN 217208259 U CN217208259 U CN 217208259U CN 202123128001 U CN202123128001 U CN 202123128001U CN 217208259 U CN217208259 U CN 217208259U
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- locking sleeve
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Abstract
The utility model discloses a pipeline expansion joint, which comprises a first connecting pipe, a second connecting pipe and a locking sleeve, wherein the first connecting pipe sequentially comprises a large-diameter section, a medium-diameter section and a small-diameter section along the axis direction, the inner diameter of the small-diameter section is the same as that of the second connecting pipe, the inner diameter of the medium-diameter section is the same as that of the second connecting pipe, the second connecting pipe is inserted from one end of the large-diameter section, the locking sleeve is inserted into a gap part between the outer wall of the second connecting pipe and the inner wall of the large-diameter section, a connecting bolt for limiting axial relative displacement is arranged between the locking sleeve and the first connecting pipe, the inner wall of the locking sleeve is the same as that of the second connecting pipe, the contact surface between the outer wall of the locking sleeve and the inner wall of the large-diameter section is a wedge surface, and the insertion end of the locking sleeve is uniformly provided with an expansion joint, the pipeline expansion joint can adjust the length in the installation process and effectively fix the relative position relation between the two parts, the problem of sealing performance reduction caused by vibration is avoided.
Description
Technical Field
The utility model relates to a pipeline valve door technical field specifically is a pipeline telescopic joint.
Background
In the fields of petroleum, chemical industry, food, medical treatment and the like, when gas and fluid transmission is involved, pipeline transmission is mostly adopted, the existing pipeline is mostly spliced and sealed by adopting customized pipeline sections, when the pipeline is laid, because the length of the pipeline sections is fixed, and flanges for connection are arranged at the end parts, when the actual scene can not meet the standard pipeline section laying, the nonstandard pipeline sections with special length are specially customized, the special customization period is longer, the cost is higher, the rapid implementation of field construction is not facilitated, the flexibility is poorer, similar pipeline expansion joints appear, but when the existing expansion joints are constructed, the length of the expansion joints after being accessed is firstly adjusted, then the pipeline is accessed, the length of the expansion joints after being accessed can not be adjusted, or the positions of two parts of the expansion joints are not limited, pipeline vibration can occur in the use process, the two parts are repeatedly rubbed, resulting in a decrease in sealability.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a pipeline telescopic joint, can adjust length in the installation, and the relative position relation between the effective fixed two parts, the leakproofness decline problem of avoiding vibrations to cause can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pipeline telescopic joint, includes first connecting pipe, second connecting pipe and locking sleeve, first connecting pipe includes big footpath section, well footpath section and path section along the axis direction in proper order, path section internal diameter is the same with the second connecting pipe internal diameter, well footpath section internal diameter is the same with second connecting pipe external diameter, the second connecting pipe is inserted from the one end of big footpath section, locking sleeve inserts the gap part between second connecting pipe outer wall and the big footpath section inner wall, be provided with the connecting bolt of restriction axial relative displacement between locking sleeve and the first connecting pipe, locking sleeve inner wall is the same with second connecting pipe external diameter, locking sleeve outer wall is the wedge face with the contact surface of big footpath section inner wall, and locking sleeve's the end of inserting evenly is provided with the tight seam that rises.
As a preferred technical scheme of the utility model, an annular groove is arranged on the outer wall of one end of the second connecting pipe inserted into the first connecting pipe, and a first sealing ring is arranged in the annular groove;
through setting up first sealing washer, effectively increase the leakproofness between second connecting pipe outer wall and the first connecting pipe inner wall, avoid inside fluid or gas leakage.
As a preferred technical solution of the present invention, the inner wall of one end of the large-diameter section close to the medium-diameter section is a wedge-shaped surface, the inner wall of the other end is a cylindrical surface, the outer wall of the insertion end of the locking sleeve is a wedge-shaped surface, the other end is a cylindrical surface, the outer wall of the cylindrical surface of the locking sleeve is provided with an annular groove, and a second sealing ring is arranged in the annular groove;
when the locking sleeve inserts, owing to receive the effect of wedge face, both extrude each other, make the tight seam shrink that rises, thereby make the second connecting pipe of locking sleeve hug inside tightly, thereby realize fixing of both relative positions, and the locking sleeve is fixed through the bolt with first connecting pipe, both relative position relations are fixed equally, consequently first connecting pipe and second connecting pipe are in the course of the work, can effectively avoid rocking relatively and friction, effectively guarantee the sealing performance of junction, and in the installation, can accomplish the trunk line and insert the back, continue to carry out length adjustment, carry out relative position's fixing again at last, effectively reduce the installation degree of difficulty, adaptation site environment.
As a preferred technical scheme of the utility model, the inner wall joining positions of the large-diameter section, the medium-diameter section and the small-diameter section are all provided with inclined planes;
by arranging the inclined plane, the impact of the internal fluid on the cross section during flowing is reduced.
As a preferred technical solution of the present invention, both ends of the first connecting pipe are provided with flanges, the non-insertion ends of the second connecting pipe and the locking sleeve are provided with flanges, the surface of the flange is provided with a through hole, a short screw rod is arranged between the flanges of the first connecting pipe and the locking sleeve in a penetrating manner, and both ends of the short screw rod are provided with nuts for limiting the first connecting pipe and the locking sleeve from being away from each other;
through the connection effect of short screw, avoid locking sleeve and first connecting pipe to take place axial relative motion to guarantee that locking sleeve can hold the second connecting pipe tightly, guarantee the relative stability in the position of first connecting pipe and second connecting pipe.
As a preferred technical solution of the present invention, flanges are provided at both ends of the first connecting pipe, flanges are provided at non-insertion ends of the second connecting pipe and the locking sleeve, through holes are provided on the surfaces of the flanges, long screws are provided between the flanges of the first connecting pipe, the locking sleeve and the second connecting pipe, and a plurality of sets of nuts for limiting the relative displacement of the three are provided in the long screws;
through increasing long screw, increase first connecting pipe, second connecting pipe and locking sleeve's an organic whole nature, avoid the inside fluid impact of practical in-process to cause the seam crossing leakproofness problem that descends.
Compared with the prior art, the beneficial effects of the utility model are that: this pipeline expansion joint adopts the mode of pegging graft each other of first connecting pipe and second connecting pipe to install, and in the use, can be earlier than the trunk line connection back that is prior to both ends respectively with first connecting pipe and second connecting pipe, according to site environment and the adjustment of retrograde motion insertion volume, axial displacement through locking sleeve afterwards, realize the fixed of first connecting pipe and second connecting pipe relative position, the whole construction degree of difficulty reduces, and fix through the frictional force between the pipe wall between the two, the leakproofness decline problem that effective surface seam position caused because of vibrations, the not enough problem of leakproofness that the interior water hammer effect of effective solution pipeline caused.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a sectional view of the present invention;
the arrows in the figure indicate the flow direction of the internal medium;
fig. 3 is a schematic view of the locking sleeve of the present invention.
In the figure: 1. a first connecting pipe; 101. a large diameter section; 102. a medium diameter section; 103. a small diameter section; 2. a second connection pipe; 201. a first seal ring; 3. a locking sleeve; 301. a second seal ring; 302. expansion and tight sewing; 4. a long screw; 5. short screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a pipeline expansion joint, including first connecting pipe 1, second connecting pipe 2 and locking sleeve 3, first connecting pipe 1 includes big footpath section 101 along the axis direction in proper order, well footpath section 102 and path section 103, path section 103 internal diameter is the same with 2 internal diameters of second connecting pipe, well footpath section 102 internal diameter is the same with 2 external diameters of second connecting pipe, second connecting pipe 2 inserts from the one end of big footpath section 101, locking sleeve 3 inserts the gap part between 2 outer walls of second connecting pipe and the big footpath section 101 inner wall, be provided with the connecting bolt of restriction axial relative displacement between locking sleeve 3 and the first connecting pipe 1, locking sleeve 3 inner wall is the same with 2 external diameters of second connecting pipe, the contact surface of 3 outer walls of locking sleeve and big footpath section 101 inner wall is the wedge face, and the end of inserting of locking sleeve 3 evenly is provided with the tight seam 302 that rises.
An annular groove is formed in the outer wall of one end, inserted into the first connecting pipe 1, of the second connecting pipe 2, and a first sealing ring 201 is arranged in the annular groove;
through setting up first sealing washer 201, effectively increase the leakproofness between second connecting pipe 2 outer wall and the first connecting pipe 1 inner wall, avoid inside fluid or gas leakage.
The inner wall of one end, close to the middle-diameter section 102, of the large-diameter section 101 is a wedge-shaped surface, the inner wall of the other end of the large-diameter section is a cylindrical surface, the outer wall of the insertion end of the locking sleeve 3 is a wedge-shaped surface, the other end of the locking sleeve is a cylindrical surface, the outer wall of the cylindrical surface of the locking sleeve 3 is provided with an annular groove, and a second sealing ring 301 is arranged in the annular groove;
when locking sleeve 3 inserts, owing to receive the effect of wedge, both extrude each other, make and rise tight seam 302 shrink, thereby make locking sleeve 3 hold inside second connecting pipe 2 tightly, thereby realize the fixed of both relative positions, and locking sleeve 3 is fixed through the bolt with first connecting pipe 1, both relative position relations are fixed equally, consequently first connecting pipe 1 and second connecting pipe 2 are at the working process, can effectively avoid rocking relatively and friction, effectively guarantee the sealing performance of junction, and in the installation, can accomplish the trunk line and insert the back, continue to carry out length adjustment, carry out relative position's fixed at last again, effectively reduce the installation degree of difficulty, adapt to site environment.
Inclined planes are arranged at the joint positions of the inner walls of the large-diameter section 101, the middle-diameter section 102 and the small-diameter section 103;
by arranging the inclined plane, the impact of the internal fluid on the cross section during flowing is reduced.
Flanges are arranged at two ends of the first connecting pipe 1, flanges are arranged at non-insertion ends of the second connecting pipe 2 and the locking sleeve 3, through holes are formed in the surfaces of the flanges, a short screw 5 penetrates between the flanges of the first connecting pipe 1 and the locking sleeve 3, and nuts used for limiting the first connecting pipe 1 and the locking sleeve 3 to be far away are arranged at two ends of the short screw 5;
through the connection effect of short screw 5, avoid locking sleeve 3 and first connecting pipe 1 to take place axial relative motion to guarantee that locking sleeve 3 can hold second connecting pipe 2 tightly, guarantee the relative stability in the position of first connecting pipe 1 and second connecting pipe 2.
Flanges are arranged at two ends of the first connecting pipe 1, flanges are arranged at non-insertion ends of the second connecting pipe 2 and the locking sleeve 3, through holes are arranged on the surfaces of the flanges, long screw rods 4 penetrate among the flanges of the first connecting pipe 1, the locking sleeve 3 and the second connecting pipe 2, and a plurality of groups of nuts used for limiting the relative displacement of the first connecting pipe 1, the locking sleeve 3 and the second connecting pipe 2 are arranged in the long screw rods 4;
through increasing long screw 4, increase first connecting pipe 1, second connecting pipe 2 and locking sleeve 3's an organic whole nature, avoid the inside fluid impact problem of descending of seam crossing leakproofness that causes among the practical process.
When in use: with first connecting pipe 1 and second connecting pipe 2 respectively with be responsible for the tip pass through the bolt and be connected, adjust the insertion amount of second connecting pipe 2, afterwards, insert locking sleeve 3 until first connecting pipe 1 and second connecting pipe 2 relatively stable, it is fixed with locking sleeve 3 and first connecting pipe 1 through the bolt, when pipeline axial atress, first connecting pipe 1 and second connecting pipe 2 can have comparatively stable relative position relation, and when the pipeline trembles, both can not twitch each other yet, seam position leakproofness keeps better.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a pipeline telescopic joint, includes first connecting pipe (1), second connecting pipe (2) and locking sleeve (3), its characterized in that: the first connecting pipe (1) sequentially comprises a large-diameter section (101), a medium-diameter section (102) and a small-diameter section (103) along the axis direction, the inner diameter of the small-diameter section (103) is the same as the inner diameter of the second connecting pipe (2), the inner diameter of the medium-diameter section (102) is the same as the outer diameter of the second connecting pipe (2), the second connecting pipe (2) is inserted from one end of the large-diameter section (101), the locking sleeve (3) is inserted into a gap part between the outer wall of the second connecting pipe (2) and the inner wall of the large-diameter section (101), a connecting bolt for limiting the axial relative displacement is arranged between the locking sleeve (3) and the first connecting pipe (1), the inner wall of the locking sleeve (3) has the same outer diameter as the second connecting pipe (2), the contact surface of the outer wall of the locking sleeve (3) and the inner wall of the large-diameter section (101) is a wedge-shaped surface, and the inserting end of the locking sleeve (3) is uniformly provided with expansion seams (302).
2. The pipe telescopic joint according to claim 1, wherein: the outer wall of one end, inserted into the first connecting pipe (1), of the second connecting pipe (2) is provided with an annular groove, and a first sealing ring (201) is arranged in the annular groove.
3. The pipe telescopic joint according to claim 1, wherein: the inner wall of one end, close to the middle-diameter section (102), of the large-diameter section (101) is a wedge-shaped surface, the inner wall of the other end of the large-diameter section is a cylindrical surface, the outer wall of an insertion end of the locking sleeve (3) is the wedge-shaped surface, the other end of the locking sleeve is the cylindrical surface, an annular groove is formed in the outer wall of the cylindrical surface of the locking sleeve (3), and a second sealing ring (301) is arranged in the annular groove.
4. The pipe telescopic joint according to claim 1, wherein: the inner wall joint positions of the large-diameter section (101), the middle-diameter section (102) and the small-diameter section (103) are all provided with inclined planes.
5. The pipe telescopic joint according to claim 1, wherein: the two ends of the first connecting pipe (1) are provided with flanges, the non-insertion ends of the second connecting pipe (2) and the locking sleeve (3) are provided with flanges, the surface of each flange is provided with a through hole, a short screw (5) penetrates between the flanges of the first connecting pipe (1) and the locking sleeve (3), and nuts used for limiting the first connecting pipe (1) and the locking sleeve (3) to be far away are arranged at the two ends of the short screw (5).
6. The pipe telescopic joint according to claim 1, wherein: the two ends of the first connecting pipe (1) are provided with flanges, the non-insertion ends of the second connecting pipe (2) and the locking sleeve (3) are provided with flanges, the surface of each flange is provided with a through hole, long screw rods (4) penetrate through the flanges of the first connecting pipe (1), the locking sleeve (3) and the second connecting pipe (2), and a plurality of groups of nuts used for limiting the relative displacement of the first connecting pipe, the second connecting pipe and the locking sleeve are arranged in the long screw rods (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123128001.9U CN217208259U (en) | 2021-12-14 | 2021-12-14 | Pipeline expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123128001.9U CN217208259U (en) | 2021-12-14 | 2021-12-14 | Pipeline expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217208259U true CN217208259U (en) | 2022-08-16 |
Family
ID=82783555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123128001.9U Active CN217208259U (en) | 2021-12-14 | 2021-12-14 | Pipeline expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217208259U (en) |
-
2021
- 2021-12-14 CN CN202123128001.9U patent/CN217208259U/en active Active
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