CN214579445U - Groove pipe joint pre-assembling clamping ring piece - Google Patents
Groove pipe joint pre-assembling clamping ring piece Download PDFInfo
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- CN214579445U CN214579445U CN202023208927.4U CN202023208927U CN214579445U CN 214579445 U CN214579445 U CN 214579445U CN 202023208927 U CN202023208927 U CN 202023208927U CN 214579445 U CN214579445 U CN 214579445U
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Abstract
The utility model provides a ditch groove coupling pre-installation clamping ring piece, includes ditch groove coupling pre-installation snap ring, ditch groove coupling pre-installation snap ring comprises a complete cyclic annular ring body by two semicircle rings, and there is a bellying at the inner wall middle part of ditch groove coupling pre-installation snap ring, and the bellying cooperatees with the annular groove of fixed slot connection steel pipe's ditch groove coupling department, and the contact of the ditch groove coupling external diameter face of cylinder of the inner wall of the ditch groove coupling pre-installation snap ring at bellying both ends and fixed slot connection steel pipe. Adopt the utility model discloses a back is connected with fixed slot connection steel pipe to ditch groove pipe pre-installation joint, and ditch groove pipe pre-installation joint can bear through ditch groove pipe joint pre-installation snap ring and come from pipeline internal pressure, and the bending force can bear thrust again, makes things convenient for pipeline slot connection steel pipe to connect. The contact area of the groove pipe joint preassembly clamping ring and the groove connecting steel pipe of the pipeline is large, so that the groove pipe preassembly joint and the groove connecting steel pipe of the pipeline are stably connected and are not easy to fall off, and the safety is high.
Description
Technical Field
The utility model belongs to the technical field of the tube coupling of open-air steel pipeline, concretely relates to groove coupling pre-installation clamping ring spare in groove coupling pipeline.
Background
In modern war, the main approach of oil guarantee in war is to transport by oil pipeline, and guarantee that oil pipeline accurately arrives at the appointed position in time to guarantee the oil smoothly flows in war, which is a fundamental work that must be done in preparation of military war. And connecting a plurality of steel pipes together to form an oil pipeline. The preassembly joint for the groove steel pipe is mainly applied to connection between the groove connecting steel pipe in a pipeline and fixed equipment such as a booster pump station and the like and between the fixed groove connecting steel pipes relative to a connecting valve and the like. After the groove connecting steel pipe of the pipeline is changed into a socket joint connecting form, the joint form of the groove pipe joint for connecting the pump station and the valve in and out in the pipeline is changed into a socket joint form by a pre-assembly joint for the groove steel pipe, so that the pipeline can be conveniently connected.
In fig. 6, the fixed end of the pre-installed connector body of the pre-installed joint of the existing grooved tube is connected with the fixed grooved steel tube 3 ', and the split snap ring 1' positioned at the annular groove of the grooved joint of the fixed grooved steel tube 3 'is locked by the threaded connection end cap 2' of the fixed end. In the use process, the split snap ring 1 'bears the internal tension between pipes in the oil pipeline, and after the fixed end is fixed, the split snap ring 1' also needs to bear the outward thrust. Under the low pressure and flat environment of laying, the trench pipe pre-installation joint work well. When the pre-installed connector body and the fixed grooved steel tube 3' are used in a bending state and in a high-pressure environment, leakage can occur at the pre-installed joint of the grooved tube, and the grooved connection steel tube of the pre-installed joint of the grooved tube and the pipeline can fall off in severe cases, so that safety accidents are caused.
Disclosure of Invention
The utility model aims at overcoming the above-mentioned not enough of prior art, and provide a groove pipe joint pre-installation clamping ring spare, adaptation bending state and high-pressure environment use, connect stably, the security is high.
The technical scheme of the utility model is that: including ditch groove coupling pre-installation snap ring, ditch groove coupling pre-installation snap ring comprises a complete cyclic annular ring body by two semicircle rings, and there is a bellying at the inner wall middle part of ditch groove coupling pre-installation snap ring, and the bellying cooperatees with the annular groove of fixed slot connection steel pipe's ditch groove coupling department, and the contact of the ditch groove coupling external diameter face of cylinder of the ditch groove coupling pre-installation snap ring at bellying both ends and fixed slot connection steel pipe.
The annular ring body comprises an outer ring, an inner hole, an inner end face connected to the inner ends of the outer ring and the inner hole, and an outer end face connected to the outer ends of the outer ring and the inner ring, the outer ring is formed by sequentially connecting an outer cylindrical face, an outer cylindrical main step and an outer cylindrical step cylinder, an inner step hole is formed in the inner end of the inner hole, and an outer step hole is formed in the outer end of the inner hole; the inner hole of the preassembled snap ring of the grooved pipe joint is in inner diameter contact with the annular groove at the grooved pipe joint of the fixed groove connection steel pipe, the outer step end face of the outer step hole is in outer end groove wall contact with the annular groove at the grooved pipe joint of the fixed groove connection steel pipe, the inner step end face of the inner step hole is in inner end groove wall contact with the annular groove at the grooved pipe joint of the fixed groove connection steel pipe, and the inner step hole and the outer step hole are in outer diameter cylindrical surface contact with the grooved pipe joint of the fixed groove connection steel pipe.
A small gap is formed between the inner end surface of the pre-installed snap ring of the grooved pipe joint and the threaded end surface of the pre-installed connector body.
Adopt the utility model discloses a back is connected with fixed slot connection steel pipe to ditch groove pipe pre-installation joint, and ditch groove pipe pre-installation joint can bear through ditch groove pipe joint pre-installation snap ring and come from pipeline internal pressure, and the bending force can bear thrust again, makes things convenient for pipeline slot connection steel pipe to connect. The contact area of the groove pipe joint preassembly clamping ring and the groove connecting steel pipe of the pipeline is large, so that the groove pipe preassembly joint and the groove connecting steel pipe of the pipeline are stably connected and are not easy to fall off, and the safety is high.
Drawings
FIG. 1 is a schematic structural view of a preattached joint for a grooved steel pipe;
FIG. 2 is an enlarged view of L in FIG. 1;
FIG. 3 is a schematic view showing the installation of a pre-installed snap ring of a grooved pipe joint and a fixed grooved connecting steel pipe;
FIG. 4 is a schematic view of a pre-installed snap ring for a grooved pipe joint;
FIG. 5 is an enlarged view of portion B of FIG. 4;
fig. 6 is a schematic view of a prior art pre-assembled fitting.
Detailed Description
In fig. 1 to 5, the preassembly joint for grooved steel pipes is composed of a preassembly connector body 1, a grooved pipe joint clamping ring 3, a steel locking ring 2, a sealing rubber ring 4, a grooved pipe joint preassembly clamping ring 9, a threaded end cover 10 and an O-ring. The preassembled connector body, the preassembled snap ring of the grooved pipe joint and the threaded end cover are manufactured by 35Cr or thick-wall pipes with the same strength. The steel locking ring should be made of 65Mn cold drawn spring steel wire. The seal rubber ring 4 is made of butyronitrile oil-resistant rubber or synthetic oil-resistant rubber. The hardness of the outer surface of the pre-assembled connector body 1 is not lower than HRC28, and the hardness of the surface of the inner R3 circular arc is not lower than HRC 32. The surface hardness of the groove pipe joint clamping ring 3 and the groove pipe joint preassembly clamping ring 9 is not lower than HRC28, and the surface hardness of the steel locking ring 2 is not lower than HRC 32. The steel locking ring 2 is in a ring shape with a notch, and the inner diameter of the steel locking ring is slightly smaller than the outer diameter of a groove pipe joint of the end part of the pipeline groove connecting steel pipe in a free state.
The groove pipe joint preassembly snap ring 9 is a complete annular ring body formed by two identical semicircular rings, is arranged in an annular groove of the groove pipe joint at the end part of the fixed groove connecting steel pipe 11, changes the groove pipe joint form of the fixed pipeline groove connecting steel pipe 11 into a socket joint form, namely, changes the fixed groove connecting steel pipe 11 into a socket steel pipe joint after being installed through the groove pipe joint preassembly snap ring 9.
The section of the groove pipe joint pre-installed snap ring is special-shaped, the section shape of the groove pipe joint pre-installed snap ring is special-shaped, and the groove pipe joint pre-installed snap ring is respectively composed of an outer step end face 502, an outer circle main step 503, an outer circle 504, an outer circle step circle 505, an inner step hole 506, an inner step end face 507, an inner hole 508, an outer step hole 409 and an inner end face 510. The outer step end face 502, the inner step end face 507 and the inner hole 508 are matched with an annular groove at the end groove of the fixed groove connection steel pipe 11, the inner step hole 506 is in contact with the outer diameter cylindrical surface of the end groove pipe joint of the fixed groove connection steel pipe 11, the groove pipe joint preassembled clamping ring 9 is assembled with the fixed groove connection steel pipe 11, and the inner hole 508 and the outer diameter of the bottom of the annular groove at the end groove of the fixed groove connection steel pipe are tightly embraced together and are under the action of the inner diameter of the threaded end cover.
The utility model discloses an installation, including following step:
(1) installing a first O-ring 7 in the preassembled connector body, then sleeving a threaded end cover and a second O-ring 8 at the pipe body of a fixed groove connecting steel pipe 11 connected with a fixing device (other operations are not influenced during assembly), inserting a groove pipe joint of the fixed groove connecting steel pipe 11 connected with the fixing device into a third hole 216 of the preassembled connector body 1, contacting the end surface of the groove pipe joint with a step 217 of the preassembled connector body, moving the second O-ring 8 forwards to an O-ring step 215 of the preassembled connector body, clamping an outer step end surface 502, an inner step end surface 507 and an inner hole 508 of a groove pipe joint preassembled snap ring (consisting of two identical semi-rings) in a groove of a cylindrical surface of the groove pipe joint at the end part of the fixed groove connecting steel pipe in a pair manner, sleeving the threaded end cover from the inner end to the end part at the moment, sleeving an inner hole of a threaded end cover 10 on an outer cylindrical outer diameter 505 of a groove preassembled snap ring 9 of the pipe joint, then the pipe joint is connected with the external thread 213 of the pre-installed connector body 1, the threaded end cover is rotated and screwed tightly, at the moment, the end face of the inner hole of the threaded end cover is tightly attached to the main outer circle step 503 of the pre-installed clamping ring 9 of the grooved pipe joint, the end face of the grooved pipe joint of the fixed grooved connecting steel pipe is tightly attached to the step 217 of the pre-installed connector body, the groove is tightly attached to the pre-tightening force of the tight contact through threads, meanwhile, the inner end face 510 of the pre-installed clamping ring of the grooved pipe joint is close to (not tightly attached to) the threaded end face 214 of the pre-installed connector body (with a little small gap), the O-shaped ring II 8 is compressed and deformed to realize low-pressure sealing, and when the pressure is higher and higher, sealing is realized through liquid pressure under the action of liquid pressure under the high-pressure state. At this time, the preassembled connector body 1 is organically connected with a fixed groove connecting steel pipe connected with a fixing device into a whole by a threaded end cover 10 through a groove pipe joint preassembled snap ring as shown in fig. 2, and a community of the groove connecting steel pipe connected with the fixing device and the preassembled connector body is formed.
(2) Generally, as shown in fig. 1 and 2, after the fixed groove connection steel pipe 11 on which the fixed equipment connection is formed and the groove connection steel pipe single socket community pre-installed with the connector body are installed through the step (1), the left groove connection steel pipe assembly is installed.
Assembling and analyzing the stress of the annular groove of the grooved pipe joint preassembled snap ring 9 and the fixed grooved connection steel pipe in the using process:
the groove pipe joint pre-installation snap ring 9 is connected the power of the tip groove pipe joint terminal surface direction (inside) of steel pipe by fixed slot promptly and can receive the power of the groove pipe joint terminal surface opposite direction (outside) again, specifically as follows:
the groove pipe joint preassembly snap ring 9 is connected with a groove connecting steel pipe 11 connected with a fixing device, the outer circle main step 503 bears the connecting force of the preassembly connector body 1 transmitted from the inner hole end face of the threaded end cover 10, the force of the pressure transmitted in a pipeline and the bending force in the use process, the inner step end face 507 of the groove pipe joint preassembly snap ring 9 bears the main force, the inner step hole 506 bears a certain auxiliary force, the direction of the force is inward towards the end face of the groove pipe joint relative to the groove pipe joint at the end part of the fixing groove connecting steel pipe, the inner step end face 507 of the groove pipe joint preassembly snap ring 9 bears the inward force from the threaded end cover 10, the inner diameter of the annular groove and the inner end of the annular groove which are transmitted to the inner hole 508, the end surface 507 of the inner step and the inner step hole 506 and are connected with the corresponding fixed groove, and the outer diameter cylindrical surface of the grooved pipe joint of the end part of the steel pipe connected with the pipeline groove connected with the inner end of the notch of the annular groove. The transfer path is that groove coupling pre-installation snap ring 9 is connected steel pipe 11 and annular groove cooperation contact surface with fixed pipeline slot, specifically is: the inner hole 508 corresponds to the inner diameter of the annular groove, the inner step end surface 507 corresponds to the inner end groove wall of the annular groove, the inner end groove wall of the annular groove is close to the end surface of the groove pipe joint, the inner step hole 506 corresponds to the outer diameter cylindrical surface of the end part of the fixed groove connecting steel pipe 11 of the groove pipe joint, and the outer diameter cylindrical surface is between the annular groove and the end surface of the groove pipe joint; the inner step hole 506 also plays a role in transmitting certain auxiliary force to the outer diameter cylindrical surface of the end part of the fixed groove connecting steel pipe 11 and in assisting in preventing possible rotating force when the inner step end surface 507 and the inner hole 508 form an included angle to bear main force, and the rotating force can cause the groove pipe joint pre-installed snap ring 9 to be separated from the annular groove at the groove part of the fixed groove connecting steel pipe 11; the outer step end surface 502 also mainly bears the potential rotation force when the included angle formed by the connection of the inner step end surface 507 and the inner hole 508 bears the main force; the inner hole 508 and the outer diameter of the bottom of the annular groove at the end part of the fixed groove connecting steel pipe are tightly embraced together under the action of the inner diameter of the threaded end cover.
The groove pipe joint preassembly snap ring 9 is also stressed by opposite (outward) forces of the end faces of the groove pipe joint, after the fixed groove connection steel pipe and the preassembly connector body are installed, the outer step end face 502 of the groove pipe joint preassembly snap ring 9 bears main force, the outer step hole 509 bears certain auxiliary force, and the force direction is outward towards the end face of the groove pipe joint relative to the end groove pipe joint of the fixed groove connection steel pipe at the moment when the pipeline groove connection steel pipe assembly at the other end (left side) is installed or a single-socket community of the groove connection steel pipe is used as a connection interface in a fixed place.
The outer step end surface 502 of the pre-installed snap ring 9 of the grooved pipe joint bears the outward force from the threaded end cover 10 and transmits the outward force to the inner hole 508, the outer step end surface 502 and the outer step hole 509, and the outer diameter cylindrical surface of the grooved pipe joint corresponding to the inner diameter of the annular groove of the fixed groove connecting steel pipe, the outer end of the annular groove and the outer diameter cylindrical surface of the fixed groove connecting steel pipe end connected with the inner end of the notch of the annular groove. The transfer path is that groove coupling pre-installation snap ring 9 is connected steel pipe 11 and annular groove cooperation contact surface with fixed pipeline slot, specifically is: the inner hole 508 corresponds to the inner diameter of the annular groove, the outer step end surface 502 corresponds to the outer end groove wall of the annular groove, the outer end groove wall of the annular groove is far away from the end surface of the groove pipe joint, the outer step hole 509 corresponds to the outer diameter cylindrical surface of the end part groove pipe joint of the fixed groove connecting steel pipe 11, and the outer diameter cylindrical surface is far away from the end surface of the groove pipe joint in the annular groove; the outer step hole 509 also plays a role in transmitting certain auxiliary force to the outer diameter cylindrical surface of the end part of the fixed groove connecting steel pipe 11 and in assisting in preventing possible rotating force when the outer step end surface 502 and the inner hole 508 form an included angle to bear main force, and the rotating force can cause the groove pipe joint pre-installed snap ring 9 to be separated from the annular groove at the groove part of the fixed groove connecting steel pipe 11; the inner step end surface 507 also mainly bears the potential rotation force when the included angle formed at the joint of the outer step end surface 502 and the inner hole 508 bears the main force; the inner hole 508 and the outer diameter of the bottom of the annular groove at the end part of the fixed groove connecting steel pipe are tightly embraced together under the action of the inner diameter of the threaded end cover.
In fig. 6, no matter the split snap ring 1 'bears inward pulling force or inward and outward pushing forces, the two outer sides of the split snap ring 1' act on the ring surfaces at the two sides of the annular groove of the groove joint, and it can be seen in the figure that the ring surfaces at the two sides of the annular groove of the groove joint are smaller, so the bearing force is not large, especially when the pre-installed connector body and the fixed groove steel pipe 3 'are used in a bending state, the split snap ring 1' can possibly be separated from the annular groove of the groove joint due to the fact that the split snap ring bears the pulling force or the pushing force and the bending force on the smaller ring surfaces at the two sides of the annular groove of the groove joint, and the use is influenced.
Claims (3)
1. The utility model provides a groove pipe joint pre-installation clamping ring spare which characterized in that: the groove pipe joint pre-installation clamping ring comprises a groove pipe joint pre-installation clamping ring (9), wherein the groove pipe joint pre-installation clamping ring (9) is a complete annular ring body formed by two semicircular rings, a protruding portion is arranged in the middle of the inner wall of the groove pipe joint pre-installation clamping ring (9), the protruding portion is matched with an annular groove in the groove pipe joint of a fixed groove connection steel pipe (11), and the inner walls of the groove pipe joint pre-installation clamping rings (9) at the two ends of the protruding portion are in contact with the outer diameter cylindrical surface of the groove pipe joint of the fixed groove connection steel pipe (11).
2. The pre-assembled collar piece of a grooved pipe joint as set forth in claim 1, wherein: the ring-shaped ring body comprises an outer ring, an inner hole (508), an inner end surface (510) connected to the inner ends of the outer ring and the inner hole (508), and an outer end surface connected to the outer ends of the outer ring and the inner ring, wherein the outer ring is formed by sequentially connecting an outer cylindrical surface (504), an outer cylindrical main step (503) and an outer cylindrical step cylinder (505), an inner step hole (506) is formed in the inner end of the inner hole (508), and an outer step hole (509) is formed in the outer end of the inner hole (508); an inner hole (508) of a groove pipe joint preassembled clamping ring (9) is in inner diameter contact with an annular groove at the groove pipe joint of a fixed groove connecting steel pipe (11), an outer step end face (502) of an outer step hole (509) is in outer end groove wall contact with the annular groove at the groove pipe joint of the fixed groove connecting steel pipe (11), an inner step end face (507) of an inner step hole (506) is in inner end groove wall contact with the annular groove at the groove pipe joint of the fixed groove connecting steel pipe (11), and the inner step hole (506) and the outer step hole (509) are in outer diameter cylindrical surface contact with the groove pipe joint of the fixed groove connecting steel pipe (11).
3. The pre-assembled collar piece of a grooved pipe joint as set forth in claim 1, wherein: a gap is reserved between the inner end surface (510) of the groove pipe joint pre-installed clamping ring (9) and the threaded end surface (214) of the pre-installed connector body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208927.4U CN214579445U (en) | 2020-12-28 | 2020-12-28 | Groove pipe joint pre-assembling clamping ring piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208927.4U CN214579445U (en) | 2020-12-28 | 2020-12-28 | Groove pipe joint pre-assembling clamping ring piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214579445U true CN214579445U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023208927.4U Active CN214579445U (en) | 2020-12-28 | 2020-12-28 | Groove pipe joint pre-assembling clamping ring piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214579445U (en) |
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2020
- 2020-12-28 CN CN202023208927.4U patent/CN214579445U/en active Active
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