CN110131493B - Circumferential force-increasing clamping and pressing type submarine pipeline connector - Google Patents
Circumferential force-increasing clamping and pressing type submarine pipeline connector Download PDFInfo
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- CN110131493B CN110131493B CN201910358166.3A CN201910358166A CN110131493B CN 110131493 B CN110131493 B CN 110131493B CN 201910358166 A CN201910358166 A CN 201910358166A CN 110131493 B CN110131493 B CN 110131493B
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- shell
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- groove
- force
- pressure ring
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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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/161—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
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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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L2013/145—Tools specially adapted therefor
Abstract
The invention provides a circumferential force-increasing clamping and pressing type submarine pipeline connector which comprises a connector shell, a pressure ring, a base body and a locking bolt. The shell is in a hollow cylinder shape, the outer side of the middle part of the shell is provided with an annular groove which is used for matching with a connecting tool of a clamping and pressing type mechanical connector, and the tool is used for providing required axial clamping force; the middle part of the inner side of the shell is provided with an annular convex shoulder for positioning the base body during installation; the inner surfaces of two sides of the shell are provided with a plurality of inclined guide force increasing grooves which are used for guiding the pressure ring to axially rotate and have the force increasing function; on the surface of casing both sides, respectively along 3 locking bolt holes of circumference equipartition for prevent that connector inner structure is unexpected not hard up in the use. Compared with the clamping-pressing type connector capable of increasing force along the axial direction, the clamping-pressing type connector realizes the circumferential rotation force increasing function, and isolates the direct influence of the axial disturbance of the pipeline on the connector structure.
Description
Technical Field
The invention relates to a pipeline connecting device, in particular to a circumferential boosting clamping and pressing type submarine pipeline connector, and belongs to the field of submarine pipeline connectors.
Background
Subsea pipeline connectors are widely used for installing or repairing subsea oil and gas pipelines. The existing connecting method of the pipeline mainly comprises the following steps: welding, bolt flange joint, clamp connection, jack catch are connected, card pressure is connected etc. and wherein card pressure formula is connected and is a new connected mode, compares more high-efficient, reliable with other modes, and the structure is more compact.
The existing technology has the following defects:
the existing clamping and pressing type connectors all adopt a wedge-shaped force-increasing mechanism which moves axially to realize connection and sealing. The invention patent of 'detachable pipe connector' (invention patent 201610115655.2) is a typical clamping and pressing connector, in order to press a connector base body, a plurality of wedge-shaped conical surfaces are required to be designed in sequence along the axial direction, so that the stroke of pressing and boosting is long; in addition, in the installation process, the formed extrusion contact surface is a circumferential narrow annular band moving along the axial direction, the axial stress of the extruded connector base body is uneven in the process, external pressure instability of the extruded structure is easily caused, and the risk of axial distortion is caused.
Disclosure of Invention
The invention aims to provide a circumferential reinforcement clamping-pressing type submarine pipeline connector which realizes wedge reinforcement in a circumferential rotation mode.
The purpose of the invention is realized as follows: the pressure ring is positioned between the base body and the shell, the shell is of a bilaterally symmetrical hollow cylindrical structure taking a middle position as a reference, an annular groove is formed in the outer surface of the middle position of the shell, an annular convex shoulder is formed in the inner surface of the middle position of the shell, inclined guide reinforcing grooves are formed in the inner surfaces of two end portions of the shell, locking bolt holes are formed in the outer surfaces of two sides of the shell respectively, the two pressure rings and the two base bodies are arranged on the left side and the right side of the inner part of the shell symmetrically, one end of each base body is in contact with the annular convex shoulder, reinforcing teeth are arranged on the outer surface of the other end of each base body, a reinforcing tooth groove matched with each reinforcing tooth is formed in the inner surface of each pressure ring, an inclined guide boss matched with each inclined guide reinforcing groove is formed in the outer, and locking bolts are arranged in the locking bolt holes and the locking blind holes.
The invention also includes such structural features:
1. annular raised sealing rings are uniformly distributed on the inner surface of the base body on the same side as the force increasing teeth along the axial direction; and a support ring parallel to the sealing ring is arranged on the surface in the base body.
2. The number of the locking bolt holes, the number of the locking blind holes and the number of the locking bolts are three, and the locking bolts are arranged at equal intervals in the circumferential direction.
3. The groove bottom surface shape of the inclined guide reinforcement groove is formed by superposing an inclined reinforcement groove section with a parallelogram cambered surface on the groove bottom surface and an axial guide groove section with a rectangular cambered surface on the groove bottom surface.
4. The tooth width direction of the boosting tooth is axial, one side surface of the boosting tooth is a concave arc inclined surface, and the other side of the boosting tooth is an inclined surface.
5. The cross section of the support ring is rectangular, and the cross section of the sealing ring is triangular.
Compared with the prior art, the invention has the beneficial effects that: compared with a clamping-pressing type connector for increasing force along the axial direction, the clamping-pressing type connector realizes the circumferential rotation force increasing function, and isolates the direct influence of the axial disturbance of a pipeline on the structure of the connector; the side wall of the inclined guide force increasing groove and the concave arc inclined surface of the force increasing tooth form a secondary force increasing mechanism in the circumferential direction; the secondary force-increasing mechanism greatly reduces the blocking phenomenon in the connection process of the existing clamping-pressing type connector; the two-stage force-increasing mechanism of the invention ensures that the axial moving stroke of the pressure ring is shorter, and compared with a clamping and pressing type connector with only one-stage axial force-increasing mechanism, the invention reduces the loading time of a connecting machine; the sealing ring of the invention simultaneously realizes the sealing and anchoring functions of the pipeline.
Drawings
FIG. 1a is a schematic view showing an internal structure of a ready-to-mount state of the present invention, and FIG. 1b is a schematic view showing a structure in an A-A direction of FIG. 1 a; fig. 1c, 1d, and 1e are partially enlarged schematic views of I, II, and III, respectively.
FIG. 2a is a schematic view showing an internal structure in a state where the installation of the present invention is completed, and FIG. 2B is a schematic view showing a structure in a direction B-B of FIG. 2 a; fig. 2c, 2d, and 2e are partially enlarged schematic views of IV, V, and VI, respectively.
Fig. 3 is a three-dimensional structural sectional view of a preliminary mounting state of the present invention.
Fig. 4 is a sectional view of a three-dimensional structure in a state where the installation of the present invention is completed.
Fig. 5 is a three-dimensional sectional view of the housing.
Fig. 6a and 6b are respectively a schematic diagram of the internal structure of the shell and a schematic diagram of the shape of the groove bottom of the inclined guide reinforcement groove.
Fig. 7 a-7 c are schematic diagrams of a pressure ring structure, i.e., a first, a second, and a third.
Fig. 8 a-8 c are schematic diagrams of the substrate structures of first, second and third.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1a to 8c, the connector of the present invention has a symmetrical structure. The connector comprises a connector shell, a pressure ring, a base body and a locking bolt.
The shell is in a hollow cylinder shape, the outer side of the middle part of the shell is provided with an annular groove which is used for matching with a connecting tool (patent number: 201310276554.X) of the invention patent of a clamping and pressing type mechanical connector, and the tool is used for providing required axial clamping force; the middle part of the inner side of the shell is provided with an annular convex shoulder for positioning the base body during installation; the inner surfaces of two sides of the shell are provided with a plurality of inclined guide force increasing grooves which are used for guiding the pressure ring to axially rotate and have the force increasing function; on the surface of casing both sides, respectively along 3 locking bolt holes of circumference equipartition for prevent that connector inner structure is unexpected not hard up in the use.
The pressure ring is hollow cylinder shape, and the connector needs 2 pressure rings in total. The outer wall surface of each pressure ring is circumferentially provided with an inclined guide boss which can be matched with the inclined guide reinforcement groove; force increasing tooth grooves are uniformly distributed on the inner surface of the pressure ring along the circumferential direction, the groove direction of the force increasing tooth grooves is along the axial direction of the shell, and the force increasing tooth grooves penetrate through the end faces of the two sides of the pressure ring; and the pressure ring is circumferentially provided with a locking blind hole corresponding to the locking bolt hole, when the connection of the connector is finished, the pressure ring is simultaneously rotated, and the axis of the locking blind hole is coaxial and collinear with the axis of the locking bolt hole.
The base body is hollow cylinder shape, and the connector needs 2 base bodies in total. One end of the base body is cylindrical, can be positioned and matched with the annular convex shoulder of the shell and is fixedly connected with the shell in a welding mode before use; force increasing teeth are uniformly distributed on the outer surface of the other end of the base body along the circumferential direction; a plurality of annular raised sealing rings are uniformly distributed on the inner surface of the base body on the same side as the boosting teeth along the axial direction of the base body; and the surface in the base body is also provided with 1 support ring parallel to the sealing ring, and the support ring and the sealing ring are used for supporting a pipeline together.
The locking bolt is screwed into the locking bolt hole in advance before installation, but is screwed into the locking bolt hole to a smaller depth, so that the locking bolt is ensured not to contact the pressure ring. After connection is completed, the underwater robot continues to rotate the locking bolt, so that the end part of the bolt enters the locking blind hole, the relative position of the pressure ring and the shell is fixed, and connection failure caused by reverse rotation of the pressure ring due to environmental factors such as vibration and the like in the use process is prevented.
The groove bottom surface shape of the inclined guide reinforcement groove is formed by superposing an inclined reinforcement groove section with a parallelogram cambered surface on the groove bottom surface and an axial guide groove section with a rectangular cambered surface on the groove bottom surface, and the groove bottom surfaces of the two groove sections are coplanar;
the axial guide groove sections and the inclined force increasing groove sections are the same in number. The axial guide groove section has the function that the pressure ring can be directly inserted into a specified depth position between the shell and the base body along the axial direction during assembly before connection without rotating along the inclined force increasing groove section, so that interference of relative rotation of the force increasing tooth groove and the force increasing tooth in the assembly process is avoided.
The inclination angle between the inclined guide force increasing groove and the axial direction of the shell is determined by calculation according to the angle required to rotate in the connection process of the pressure ring and the axial movement stroke of the pressure ring, and the inclination angles of pipelines with different specifications are different so as to ensure that the pressure ring is just positioned at the position where the force increasing teeth are pressed after rotating along the inclined guide force increasing groove when the connection is finished. The locking bolt hole is a threaded through hole, and the opening position of the locking bolt hole is staggered with the inclined guide boosting groove, so that the hole wall of the locking bolt hole has the maximum thickness. The strength of the pressure ring material is greater than that of the base material, and the force-increasing tooth grooves are not deformed in the connecting process. The tooth width direction of the boosting tooth is along the axial direction, one side surface of the boosting tooth is a concave arc inclined plane, and the boosting tooth is matched with the boosting tooth groove to play a boosting role; the other side is an inclined plane for circumferential positioning. The axial length of the force-increasing tooth groove is larger than that of the force-increasing tooth, so that the force-increasing tooth is always in the force-increasing tooth groove in the process that the pressure ring moves axially and rotates. The locking blind hole does not penetrate through the wall of the base body cylinder so as to avoid influencing the force increasing effect of the force increasing teeth; the section of the support ring is rectangular and is a circle of annular bulge divided into a plurality of sections along the circumferential direction, and the segmented purpose is to reduce the internal stress of the annular part during radial contraction. The sections of the sealing rings are all triangular; by embedding the pipe surface after connection, the functions of anchoring and sealing the pipe are realized. The hardness of the materials of the pressure ring and the shell is greater than that of the base body, the base body is integrally contracted in the radial direction in the connection process, and other structures of the connector are not deformed.
The connector of the present invention is of a symmetrical construction and therefore the mounting process and the sealing principle will be described below by taking the right half of the device as an example.
Before the connector enters water, the following preparation work is carried out: as shown in fig. 1 a-1 e, the base body 4 is first inserted into the housing 1, cooperating with the annular shoulder 12 of the housing; each inclined guide boss 18 of the pressure ring 3 is aligned with the right notch of the axial guide groove section 17 of the inclined guide reinforcement groove 14 in the shell, the reinforcement tooth grooves 20 are matched with the reinforcement teeth 21 of the base body, and after the inclined guide bosses and the reinforcement teeth are aligned, the pressure ring is directly inserted between the base body and the shell in the axial direction until the inclined guide bosses are contacted with the side wall 15 of the inclined reinforcement groove section 16. The locking bolt 2 is manually screwed into the locking bolt hole 13 to a specified depth so as to be further tightened to lock the pressure ring after the connection is completed. And finally, fixedly connecting the base body with the shell in a welding mode. The relative position of the internal structure of the connector at this time is shown in fig. 1b and 3.
The underwater connection process comprises the following steps: firstly, the connector is integrally put into water, and the positions of the connectors are adjusted to enable the connected pipelines 5 at the two ends to be inserted into preset positions inside the connector. The connecting tool of the clamping and pressing type pipeline connector is embedded with the annular groove 9 on the shell, the tool pushes the pressure ring to move towards the shell along the axial direction of the shell after being started, and because the side wall of the inclined guide boss of the pressure ring is attached to the side wall of the inclined guide boosting groove before connection, the pressure ring is forced to slide along the side wall of the inclined guide boosting groove while moving in the axial direction, so that the pressure ring moves axially and rotates circumferentially relative to the shell until the pressure ring is completely pressed into the shell, the end surface 10 of the shell is overlapped with the end surface 11 of the pressure ring, connection is completed at the moment, and the relative position of the internal structure of the connector is shown in fig. 2b and fig. 4.
Two-stage boosting action exists in the underwater connection process: the inclined guide force increasing groove realizes the first-stage force increasing effect of converting the axial clamping force of the hydraulic clamping tool into the circumferential rotating force of the pressure ring; the second stage of force increasing action is as follows: as the force increasing tooth grooves of the pressure ring axially move and rotate relative to the base body, namely, each force increasing tooth groove obliquely slides along the concave arc inclined plane 6 of the corresponding force increasing tooth (the force increasing tooth groove moves from the position shown in figure 1c to the position shown in figure 2 c), the concave arc inclined plane generates force increasing action along the radial direction of the shell in the process, and the force increasing action is gradually enhanced from small to small, so that stable clamping pressure is facilitated and clamping is avoided, and the second-stage force increasing action of converting the circumferential rotating force of the pressure ring into the radial compressing force of the base body is realized in the process.
Sealing and anchoring process of underwater connection: the force-increasing teeth of the base are radially compressed by the force-increasing teeth from the force-increasing teeth grooves, and the entire base is radially contracted, so that the seal ring 8 on the inner surface of the base is fitted into the surface of the pipe to be connected (as shown in fig. 2 e), and the support ring 7 is also in close contact with the surface of the pipe (as shown in fig. 2 d). The embedding of the sealing ring achieves a sealing and axial anchoring effect on the connected pipes. The support ring supports the pipeline with the sealing ring jointly, prevents that the pipeline from taking place the torsion pendulum relative to the connector, leads to the sealed and anchoring failure of sealing ring department.
Operation at the end of connection: the connecting tool is removed and all the locking bolts are screwed into the blind locking holes 19 of the pressure ring, so that the pressure ring is prevented from being accidentally transferred in the using process. At this point the connection is complete and the connector state is as shown in fig. 2b and 4.
Claims (6)
1. The utility model provides a card pressure formula submarine pipeline connector of circumference reinforcement, includes casing, pressure ring, the base member with the pipeline contact, and the pressure ring is located between base member and casing, its characterized in that: the shell is a bilaterally symmetrical hollow cylindrical structure taking a middle position as a reference, an annular groove is arranged on the outer surface of the middle position of the shell, an annular convex shoulder is arranged on the inner surface of the middle position of the shell, inclined guide reinforcement grooves are arranged on the inner surfaces of two end parts of the shell, locking bolt holes are respectively arranged on the outer surfaces of two sides of the shell, the two pressure rings and the two base bodies are respectively and symmetrically arranged on the left side and the right side in the shell, one end of each base body is in contact with the annular convex shoulder, the outer surface of the other end of each base body is provided with a boosting tooth, the inner surface of each pressure ring is provided with a boosting tooth groove matched with the boosting tooth, the outer surface of each pressure ring is provided with an inclined guide boss matched with the inclined guide boosting groove, the outer surface of each pressure ring is also provided with a locking blind hole corresponding to the locking bolt hole, and the locking bolt holes and the locking blind holes are internally provided with locking bolts; the groove bottom surface shape of the inclined guide reinforcement groove is formed by superposing an inclined reinforcement groove section with a parallelogram cambered surface on the groove bottom surface and an axial guide groove section with a rectangular cambered surface on the groove bottom surface.
2. The circumferentially energized, clip-on subsea pipeline connector of claim 1, wherein: annular raised sealing rings are uniformly distributed on the inner surface of the base body on the same side as the force increasing teeth along the axial direction; and a support ring parallel to the sealing ring is arranged on the surface in the base body.
3. The circumferentially energized clamp-and-press subsea pipeline connector of claim 2, wherein: the number of the locking bolt holes, the number of the locking blind holes and the number of the locking bolts are three, and the locking bolts are arranged at equal intervals in the circumferential direction.
4. A circumferentially energized clamp-and-press subsea pipeline connector according to claim 1, 2 or 3 and wherein: the tooth width direction of the boosting tooth is axial, one side surface of the boosting tooth is a concave arc inclined surface, and the other side of the boosting tooth is an inclined surface.
5. A circumferentially energized clamp-and-press subsea pipeline connector according to claim 2 or 3, characterized in that: the cross section of the support ring is rectangular, and the cross section of the sealing ring is triangular.
6. The circumferentially energized, clip-on subsea pipeline connector of claim 4, wherein: the cross section of the support ring is rectangular, and the cross section of the sealing ring is triangular.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358166.3A CN110131493B (en) | 2019-04-30 | 2019-04-30 | Circumferential force-increasing clamping and pressing type submarine pipeline connector |
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| CN201910358166.3A CN110131493B (en) | 2019-04-30 | 2019-04-30 | Circumferential force-increasing clamping and pressing type submarine pipeline connector |
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| CN110131493A CN110131493A (en) | 2019-08-16 |
| CN110131493B true CN110131493B (en) | 2020-11-03 |
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| CN110762302A (en) * | 2019-09-26 | 2020-02-07 | 哈尔滨工程大学 | Hydraulically-driven circumferential clamping type submarine pipeline connector |
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| DE19958102C1 (en) * | 1999-12-02 | 2001-02-08 | Selck Gmbh & Co Kg | Pressure-sealed coupling for pipes has a coupling sleeve with inner teeth covered by a pressure ring and end press rings which force the teeth by inner projections against the pipe surface with min pressure |
| CN103331596A (en) * | 2013-07-03 | 2013-10-02 | 中国海洋石油总公司 | Connecting tool of clamping and pressing mechanical connector |
| CN203533027U (en) * | 2013-10-25 | 2014-04-09 | 王仁海 | Pipe connector |
| CN104763855A (en) * | 2015-02-28 | 2015-07-08 | 美钻能源科技(上海)有限公司 | Adjustable pipe connection device |
| CN105318119A (en) * | 2015-11-13 | 2016-02-10 | 哈尔滨工程大学 | Hydraulically-driven underwater connector |
| CN205424098U (en) * | 2016-03-01 | 2016-08-03 | 哈尔滨工程大学 | Novel submarine pipeline connector |
| DE102015016610A1 (en) * | 2015-12-22 | 2017-06-22 | Transitron Handels-Gmbh | pipe connectors |
| CN109595408A (en) * | 2018-11-29 | 2019-04-09 | 哈尔滨工程大学 | Screw-in pipe jointer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101854831B1 (en) * | 2016-08-26 | 2018-05-04 | 주식회사 메가조인트 | Pipe connection apparatus and pipe connection method |
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2019
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209518A (en) * | 1997-08-23 | 1999-03-03 | 弗利亚特克公司 | Plug-in type adaptor |
| DE19958102C1 (en) * | 1999-12-02 | 2001-02-08 | Selck Gmbh & Co Kg | Pressure-sealed coupling for pipes has a coupling sleeve with inner teeth covered by a pressure ring and end press rings which force the teeth by inner projections against the pipe surface with min pressure |
| CN103331596A (en) * | 2013-07-03 | 2013-10-02 | 中国海洋石油总公司 | Connecting tool of clamping and pressing mechanical connector |
| CN203533027U (en) * | 2013-10-25 | 2014-04-09 | 王仁海 | Pipe connector |
| CN104763855A (en) * | 2015-02-28 | 2015-07-08 | 美钻能源科技(上海)有限公司 | Adjustable pipe connection device |
| CN105318119A (en) * | 2015-11-13 | 2016-02-10 | 哈尔滨工程大学 | Hydraulically-driven underwater connector |
| DE102015016610A1 (en) * | 2015-12-22 | 2017-06-22 | Transitron Handels-Gmbh | pipe connectors |
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| CN109595408A (en) * | 2018-11-29 | 2019-04-09 | 哈尔滨工程大学 | Screw-in pipe jointer |
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