CN214579441U - Pre-assembled connector body of pre-assembled joint for groove steel pipe - Google Patents
Pre-assembled connector body of pre-assembled joint for groove steel pipe Download PDFInfo
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- CN214579441U CN214579441U CN202023208668.5U CN202023208668U CN214579441U CN 214579441 U CN214579441 U CN 214579441U CN 202023208668 U CN202023208668 U CN 202023208668U CN 214579441 U CN214579441 U CN 214579441U
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Abstract
The preassembled connector body of the preassembled connector for the channel steel pipe comprises an preassembled connector body, wherein the preassembled connector body is of a circular ring structure, one end of the preassembled connector body is a first opening connected with a pipeline groove connecting steel pipe, the other end of the preassembled connector body is a second opening connected with a fixed groove connecting steel pipe, a threaded end cover is connected outside the preassembled connector body at the second opening in a threaded mode, and a small gap is formed between the end face of the inner end of the threaded end cover and the threaded groove face of the preassembled connector body; the end parts of the pre-installed connector body and the fixed groove connecting steel pipe are sealed through an O-shaped ring I; and the preassembled connector body and the outer diameter cylindrical surface of the groove joint of the fixed groove connecting steel pipe are sealed by an O-shaped ring II. The utility model has the advantages of reasonable design, the leakproofness is good, bearing capacity is high.
Description
Technical Field
The utility model belongs to the technical field of open-air steel pipeline's tube coupling, concretely relates to fixed pre-installation joint of being connected with slot connection steel pipe of equipping in slot pipe joint 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 by the pre-assembly joints through the groove steel pipes 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. 5, the fixed end of the existing pre-installed connector body is connected with a fixed groove steel pipe 3 ', the fixed end is in threaded connection with an end cover 2' and is used for locking a split snap ring 1 'at the joint of the fixed groove steel pipe, and the fixed end of the pre-installed connector body and the fixed groove connection steel pipe are singly sealed by a single end face O-shaped sealing ring 4'.
Disclosure of Invention
The utility model aims at overcoming the above-mentioned not enough of prior art, and provide a trench channel is pre-installation connector body of effective pre-installation joint, structural design is reasonable, the leakproofness is good, bearing capacity is high.
The technical scheme of the utility model is that: the pipe joint pre-installed connector comprises a pre-installed connector body, wherein the pre-installed connector body is of an annular structure, one end of the pre-installed connector body is a first opening connected with a pipeline groove connecting steel pipe, the other end of the pre-installed connector body is a second opening connected with a fixed groove connecting steel pipe, a threaded end cover is connected outside the pre-installed connector body at the second opening in a threaded mode, and a small gap is formed between the end face of the inner end of the threaded end cover and the threaded groove face of the pre-installed connector body;
the end parts of the pre-installed connector body and the fixed groove connecting steel pipe are sealed through an O-shaped ring I; and the preassembled connector body and the outer diameter cylindrical surface of the groove joint of the fixed groove connecting steel pipe are sealed by an O-shaped ring II.
The middle part of the inner wall of the pre-installed connector body is provided with a shoulder, one side of the shoulder is provided with a third step hole, and the other side of the shoulder is provided with a second step hole positioned on the inner side and a first main step hole positioned on the outer side;
the outer wall of the preassembled connector body is a three-level stepped cylindrical surface and comprises a first-level large stepped cylindrical surface, a second-level middle stepped cylindrical surface and a third-level small stepped cylindrical surface, the third-level small stepped cylindrical surface is provided with external threads, the outer end of the third-level small stepped cylindrical surface is a threaded end surface, and the interface of the third-level small stepped cylindrical surface and the second-level middle stepped cylindrical surface is a threaded groove surface.
First main step hole outer end chamfer forms the hole oblique angle, and first main step hole inner end is through transition arc inclined plane and second step jogged joint, and first main step hole aperture is greater than second step hole aperture, and first main step hole pore wall outside-in is equipped with interior arc recess, the straight recess of outer end, the straight recess in inner in proper order, and interior arc recess links in the straight recess notch outside of outer end.
And the two ends of the outer circle of the pre-installed connector body are provided with outer circle oblique angles.
The pre-installed connector body is made of 35Cr alloy structural steel.
An O-shaped round step is arranged on the inner ring of the end face of the thread, the side face, close to the end cover of the thread, of the shoulder is a step face, and an O-shaped ring groove is formed in the step face; when the pre-installed connector body is connected with a fixed groove connecting steel pipe through a groove pipe joint pre-installed clamping ring by a threaded end cover, an O-shaped ring II arranged at the O-shaped round step is respectively in sealing connection with the outer diameter cylindrical surface of the groove pipe joint of the fixed groove connecting steel pipe and the inner end surface of the groove pipe joint pre-installed clamping ring, and an O-shaped ring I arranged at the groove of the O-shaped ring is in sealing connection with the end surface of the groove pipe joint of the fixed groove connecting steel pipe.
An assembling and disassembling pin hole is formed in one end face of the opening of the pre-installed connector body.
The utility model is suitable for an adjacent pipe end does not allow the occasion that has a certain amount of relative angular displacement and axis displacement, and adaptable high-low pressure liquid conveying pipeline uses, the dismouting of being convenient for, long service life, resistance to destruction are good, and applicable environment is extensive, and the safety in utilization is high. The utility model provides a mouthful two junctions do not allow the angular displacement and the axis removes, the utility model provides a mouthful one junction allows certain angular displacement and axial deflection to move. The novel bearing joint has the advantages of high bearing capacity and good sealing effect in the use process.
The utility model discloses a stiff end adopts the O type circle that is located the terminal surface to seal simultaneously, increases the second again and says two radial seal of O type circle, draws high sealing reliability, has better sealed effect in the use. When the sealing device works, the O-shaped ring I and the O-shaped ring II generate compression deformation to realize low-pressure sealing in a low-pressure state; when the pressure is higher and higher, a small gap is formed between the end surface of the inner end of the threaded end cover and the surface of the threaded groove, and sealing is realized through liquid pressure under the action of the liquid pressure in a high-pressure state.
Suitably increase the utility model discloses prepackage connector body wall thickness body chooses for use the 35Cr material processing that tensile strength and elongation are high the utility model discloses prepackage connector body improves prepackage connector body bearing capacity. The utility model discloses the pinhole is torn open in the external terminal surface outfit dress, is convenient for install and dismantle with the help of the instrument.
Drawings
FIG. 1 is a schematic structural view of a preattached joint for a grooved steel pipe;
FIG. 2 is an enlarged view of the portion L of FIG. 1;
FIG. 3 is a schematic view of the pre-assembled connector body of the present invention;
FIG. 4 is an enlarged view of the portion LA of FIG. 3;
fig. 5 is a schematic view of a prior art pre-assembled fitting.
Detailed Description
In fig. 1 to 4, the preassembly joint for the grooved steel pipe comprises 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-shaped 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 middle part of the inner wall of the pre-installed connector body 1 is a shoulder 206, the inner cavity of the pre-installed connector body on the left side of the shoulder 206 is an installation hole for installing a pipeline groove connecting steel pipe 5, the installation hole comprises a second stepped hole 205 located on the inner side and a first main stepped hole 204 located on the outer side, the outer end of the first main stepped hole 204 is chamfered to form an inner hole bevel 208, the inner end of the first main stepped hole 204 is connected with the second stepped hole 205 through a transition arc-shaped inclined plane 207, the aperture of the first main stepped hole 204 is larger than that of the second stepped hole 205, an inner arc-shaped groove 203, an outer end straight groove 201 and an inner end straight groove 202 are sequentially arranged on the hole wall of the first main stepped hole 204 from outside to inside, and the inner arc-shaped groove 203 is connected to the outside of the notch of the outer end straight groove 201. The pre-assembled connector body 1 has an outer bevel 209. The sealing rubber ring 4 is arranged in the inner end straight groove 202, and the steel locking ring 2 is arranged at the notch of the outer end straight groove 201. 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 grooved pipe joint of the end part of the pipeline grooved connection steel pipe 5 in a free state.
The groove pipe joint preassembly snap ring 9 is a complete annular ring body formed by two identical semicircular rings and is arranged in an annular groove of the groove pipe joint at the end part of the fixed groove connecting steel pipe 11, the groove pipe joint form of the fixed pipeline groove connecting steel pipe 11 is changed into a socket form by the preassembly snap ring for the groove steel pipe, namely, the fixed groove connecting steel pipe 11 is changed into a socket steel pipe joint after being installed through the groove pipe joint preassembly snap ring 9.
The outer wall of the pre-installed connector body 1 is a three-level stepped cylindrical surface and comprises a first-level large stepped cylindrical surface, a second-level middle stepped cylindrical surface and a third-level small stepped cylindrical surface, an assembly hole 211 is formed in the outer end of the first-level large stepped cylindrical surface and is opened and screwed by means of a tool with a cylindrical pin inserted into the assembly hole, an external thread 213 is formed in the third-level small stepped cylindrical surface, the outer end of the third-level small stepped cylindrical surface is a threaded end face 214, and the interface of the third-level small stepped cylindrical surface and the second-level middle stepped cylindrical surface is a threaded groove face 212. An O-shaped step 215 is arranged on the inner ring of the threaded end face 214, the side face, close to the threaded end cover 10, of the shoulder 206 is a step face 217, and an O-shaped ring groove 218 is formed in the step face 217; when the pre-installed connector body 1 is connected with a fixed groove connecting steel pipe 11 through a grooved pipe joint pre-installed clamping ring 9 by a threaded end cover 10, the cylindrical surface of the second-stage middle step forms the inner diameter of the outer circle middle groove 210, an O-shaped ring II 8 installed at the O-shaped circular step 215 is hermetically connected with the cylindrical surface of the outer diameter of the grooved pipe joint of the fixed groove connecting steel pipe and the inner end surface 510 of the grooved pipe joint pre-installed clamping ring 9 respectively, and an O-shaped ring I7 installed at the O-shaped ring groove 218 is hermetically connected with the end surface of the grooved pipe joint of the fixed groove connecting steel pipe.
After the pre-installed connector body 1 and the fixing groove connecting steel pipe 11 are installed, a small gap is formed between the end surface of the inner end of the threaded end cover 10 and the threaded groove surface 212, namely the end surface is not tightly attached. The outer wall of the pre-installed connector body 1 is a three-level stepped cylindrical surface and comprises a first-level large stepped cylindrical surface, a second-level middle stepped cylindrical surface and a third-level small stepped cylindrical surface, an assembly hole 211 is formed in the outer end of the first-level large stepped cylindrical surface, the first-level large stepped cylindrical surface is opened and screwed by means of a tool with a cylindrical pin inserted into the assembly hole, and an external thread 213 is formed in the third-level small stepped cylindrical surface. An O-shaped step 215 is arranged on the inner ring of the threaded end face 214, the side face, close to the threaded end cover 10, of the shoulder 206 is a step face 217, and an O-shaped ring groove 218 is formed in the step face 217; when the pre-installed connector body 1 is connected with a fixed groove connecting steel pipe 11 through a grooved pipe joint pre-installed clamping ring 9 by a threaded end cover 10, the cylindrical surface of the second-stage middle step forms the inner diameter of the outer circle middle groove 210, an O-shaped ring II 8 installed at the O-shaped circular step 215 is hermetically connected with the cylindrical surface of the outer diameter of the grooved pipe joint of the fixed groove connecting steel pipe and the inner end surface 510 of the grooved pipe joint pre-installed clamping ring 9 respectively, and an O-shaped ring I7 installed at the O-shaped ring groove 218 is hermetically connected with the end surface of the grooved pipe joint of the fixed groove connecting steel pipe.
Claims (7)
1. The utility model provides a trench steel pipe is with pre-installation connector body of pre-installation joint which characterized in that: the pipe joint pre-installed connector comprises a pre-installed connector body (1), wherein the pre-installed connector body (1) is of a circular ring structure, one end of the pre-installed connector body (1) is a first opening connected with a pipeline groove connecting steel pipe (5), the other end of the pre-installed connector body (1) is a second opening connected with a fixed groove connecting steel pipe (11), a threaded end cover (10) is connected outside the pre-installed connector body (1) at the second opening in a threaded mode, and a small gap is formed between the end face of the inner end of the threaded end cover (10) and a threaded groove face (212) of the pre-installed connector body (1);
the end parts of the pre-installed connector body (1) and the fixed groove connecting steel pipe (11) are sealed through an O-shaped ring I (7); the pre-installed connector body (1) and the groove joint outer diameter cylindrical surface of the fixed groove connecting steel pipe (11) are sealed through an O-shaped ring II (8).
2. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 1, wherein: the middle part of the inner wall of the pre-installed connector body (1) is provided with a shoulder (206), one side of the shoulder (206) is provided with a third stepped hole (216), and the other side of the shoulder (206) is provided with a second stepped hole (205) positioned on the inner side and a first main stepped hole (204) positioned on the outer side;
the outer wall of the pre-installed connector body (1) is a three-level stepped cylindrical surface and comprises a first-level large-stepped cylindrical surface, a second-level middle-stepped cylindrical surface and a third-level small-stepped cylindrical surface, wherein the third-level small-stepped cylindrical surface is provided with external threads (213), the outer end of the third-level small-stepped cylindrical surface is a threaded end surface (214), and the interface of the third-level small-stepped cylindrical surface and the second-level middle-stepped cylindrical surface is a threaded groove surface (212).
3. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 2, wherein: first main step hole (204) outer end chamfer forms hole oblique angle (208), first main step hole (204) inner is connected with second step hole (205) through transition arc inclined plane (207), first main step hole (204) aperture is greater than second step hole (205) aperture, first main step hole (204) pore wall outside-in is equipped with interior arc recess (203) in proper order, outer end straight flute (201), inner straight flute (202), interior arc recess (203) link in the outer end straight flute (201) notch outside.
4. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 1, wherein: and outer circle oblique angles (209) are arranged at the two ends of the outer circle of the pre-installed connector body (1).
5. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 1, wherein: the pre-installed connector body (1) is made of 35Cr alloy structural steel.
6. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 2, wherein: an O-shaped round step (215) is arranged on the inner ring of the threaded end face (214), a step surface (217) is arranged on the side surface, close to the threaded end cover (10), of the shoulder (206), and an O-shaped ring groove (218) is formed in the step surface (217).
7. The pre-assembled connector body of the pre-assembly fitting for a grooved steel pipe as set forth in claim 1, wherein: an assembling and disassembling pin hole is formed in one end face of the opening of the preassembled connector body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208668.5U CN214579441U (en) | 2020-12-28 | 2020-12-28 | Pre-assembled connector body of pre-assembled joint for groove steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208668.5U CN214579441U (en) | 2020-12-28 | 2020-12-28 | Pre-assembled connector body of pre-assembled joint for groove steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214579441U true CN214579441U (en) | 2021-11-02 |
Family
ID=78365831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023208668.5U Active CN214579441U (en) | 2020-12-28 | 2020-12-28 | Pre-assembled connector body of pre-assembled joint for groove steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214579441U (en) |
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2020
- 2020-12-28 CN CN202023208668.5U patent/CN214579441U/en active Active
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