CN115070194A - Steel pipe umbilical cable underwater terminal and welding method of pipeline thereof - Google Patents
Steel pipe umbilical cable underwater terminal and welding method of pipeline thereof Download PDFInfo
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- CN115070194A CN115070194A CN202210868765.1A CN202210868765A CN115070194A CN 115070194 A CN115070194 A CN 115070194A CN 202210868765 A CN202210868765 A CN 202210868765A CN 115070194 A CN115070194 A CN 115070194A
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- 238000003466 welding Methods 0.000 title claims abstract description 153
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009826 distribution Methods 0.000 claims abstract description 124
- 239000013307 optical fiber Substances 0.000 claims description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 241000251468 Actinopterygii Species 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
Abstract
The invention provides a steel pipe umbilical cable underwater terminal and a welding method of a pipeline of the steel pipe umbilical cable underwater terminal, and relates to the technical field of umbilical cables. The welding method of the pipeline of the steel pipe umbilical cable underwater terminal comprises the following steps: preparing a steel pipe umbilical cable underwater terminal and a connector before welding; carrying out centering treatment; performing a rubbing motion; welding is carried out; and carrying out post-welding treatment. Through between connector and the hydraulic pressure distribution pipeline, carry out friction weld between connector and the hydraulic pressure connecting line, the welding tip of connector and the welding tip looks mutual friction of hydraulic pressure distribution pipeline are as the heat source, the welding tip of connector and the welding tip looks mutual friction of hydraulic pressure connecting line are as the heat source, the welding tip of connector and the welding tip of hydraulic pressure distribution pipeline heat simultaneously, the welding tip of connector and the welding tip of hydraulic pressure connecting line heat simultaneously, can effectively avoid producing the problem of deformation owing to being heated unevenly in the welding process, thereby can improve welding quality.
Description
Technical Field
The invention relates to the technical field of umbilical cables, in particular to a steel pipe umbilical cable underwater terminal and a welding method of a pipeline thereof.
Background
With the continuous development of offshore oil engineering and the continuous deepening of deep sea oil and gas resource exploitation, an underwater production system is adopted to convey oil and gas to a nearby fixed platform or a floating production facility. Umbilical cables are one of the key components of the subsea production system, being the "nerve and lifeline" connecting the topside facility to the subsea production system. The umbilical cable comprises a hose umbilical cable and a steel pipe umbilical cable. The umbilical termination is a key accessory for the umbilical.
In the related art, the steel pipe umbilical cable underwater terminal comprises a terminal shell, an optical fiber circuit, an electric power circuit and a hydraulic distribution pipeline, wherein a steel pipe umbilical cable plugging valve, a hydraulic pipeline output interface, an optical fiber output interface and an electric power output interface are arranged on the side face of the terminal shell, and the steel pipe umbilical cable enters the steel pipe umbilical cable underwater terminal from the steel pipe umbilical cable plugging valve. The steel pipe umbilical cable plug valve is provided with hydraulic connection pipeline, optical fiber connection line and electric power connection line, hydraulic distribution pipeline connects between hydraulic connection pipeline and hydraulic line output interface, optical fiber connection is between optical fiber connection line and optical fiber output interface, electric power line connects between electric power connection line and electric power output interface. And the hydraulic distribution pipeline and the hydraulic connecting pipeline are directly welded by manual argon arc welding.
However, the manual welding is adopted between the hydraulic distribution pipeline and the hydraulic connecting pipeline, so that the problem of poor welding quality exists.
Disclosure of Invention
The invention provides a steel pipe umbilical cable underwater terminal and a welding method of a pipeline thereof, which aim to solve the problem of poor welding quality due to the fact that manual welding is adopted between a hydraulic distribution pipeline and a hydraulic connection pipeline.
On one hand, the invention provides a steel pipe umbilical cable underwater terminal, which comprises a terminal shell, an optical fiber circuit, an electric power circuit, a hydraulic distribution pipeline and a connector;
a steel pipe umbilical cable plugging valve, a hydraulic pipeline output interface, an optical fiber output interface and an electric power output interface are arranged on the side face of the terminal shell, the steel pipe umbilical cable plugging valve is provided with a hydraulic connecting pipeline, an optical fiber connecting circuit and an electric power connecting circuit, the optical fiber circuit is connected between the optical fiber connecting circuit and the optical fiber output interface, the electric power circuit is connected between the electric power connecting circuit and the electric power output interface, and the hydraulic distribution pipeline is connected with the hydraulic pipeline output interface;
the connector friction welding is in between the hydraulic distribution pipeline and the hydraulic connecting pipeline.
On the other hand, the invention provides a method for welding pipelines of an underwater terminal of a steel pipe umbilical cable, which comprises the following steps:
preparing before welding, performing deburring treatment on the welding end part of a hydraulic distribution pipeline and the welding end part of a hydraulic connecting pipeline of the underwater terminal of the steel pipe umbilical cable and the welding end part of a connector, and wiping the welding end part of the hydraulic distribution pipeline and the welding end part of the hydraulic connecting pipeline by using ethanol;
centering, namely respectively installing the hydraulic distribution pipeline and the hydraulic connecting pipeline into a first centering clamp and a second centering clamp for clamping and centering, installing the connector into a third centering clamp for clamping, centering the connector between the hydraulic distribution pipeline and the hydraulic connecting pipeline, and abutting the connector with the hydraulic distribution pipeline;
carrying out friction movement, pushing the hydraulic connecting pipeline to approach the connector, and driving the connector, so that friction movement is carried out between the connector and the hydraulic distribution pipeline and between the connector and the hydraulic connecting pipeline;
welding, if the plastic deformation of the welding end part of the connector, the welding end part of the hydraulic distribution pipeline and the welding end part of the hydraulic connection pipeline reaches a preset value, stopping the connector from moving, and instantly and quickly applying upsetting pressure to the hydraulic connection pipeline and the connector and maintaining the pressure until the connector, the hydraulic distribution pipeline and the hydraulic connection pipeline are welded together;
and (4) performing welding post-treatment, namely performing fish scale pattern removing treatment on the connector and a welding seam region between the hydraulic distribution pipelines and the connector and a welding seam region between the hydraulic connection pipelines.
Optionally, in the step of performing centering processing, the first centering jig and the second centering jig are located inside a terminal housing of the umbilical underwater terminal, a distance between the first centering jig and a welding end of the hydraulic distribution pipeline is 60mm, and a distance between the second centering jig and a welding end of the hydraulic connection pipeline is 60 mm.
Optionally, the hydraulic connection pipeline is arranged on the steel pipe umbilical cable plugging valve, the hydraulic distribution pipeline is connected with the hydraulic pipeline output interface, and protective gas is introduced into the steel pipe umbilical cable plugging valve and the hydraulic pipeline output interface.
Optionally, in the step of performing the centering process, the second centering fixture clamps the hydraulic connecting line and the hydraulic distribution line to be centered, and pulls away a predetermined distance between the hydraulic connecting line and the hydraulic distribution line.
Optionally, in the step of performing the frictional motion, the second centering fixture is connected to a first driving motor, and the first driving motor drives the second centering fixture, so that the hydraulic connecting pipeline is drawn toward the connector along an axis of the hydraulic connecting pipeline.
Optionally, in the step of welding, the first driving motor drives the second centering fixture, so that the hydraulic connecting line applies a first upsetting force to the connecting head along an axis of the hydraulic connecting line.
Optionally, the first upsetting force is 100Mpa to 300Mpa, and the first upsetting force is maintained for 2s to 4 s.
Optionally, the third centering fixture is connected with a second driving motor, and the second driving motor drives the third centering fixture to rotate, so that the connector and the hydraulic distribution pipeline and the connector and the hydraulic connection pipeline perform friction rotation movement.
Optionally, in the step of welding, the second driving motor is connected to a sliding block on the fixed platform, and the second driving motor is movable along an axis of the connector.
The invention provides a steel pipe umbilical cable underwater terminal and a welding method of a pipeline thereof, friction welding is carried out between a connector and a hydraulic distribution pipeline and between the connector and a hydraulic connection pipeline, the welding end part of the connector and the welding end part of the hydraulic distribution pipeline rub against each other to serve as a heat source, the welding end part of the connector and the welding end part of the hydraulic connection pipeline rub against each other to serve as a heat source, the welding end part of the connector and the welding end part of the hydraulic distribution pipeline heat simultaneously, and the welding end part of the connector and the welding end part of the hydraulic connection pipeline heat simultaneously, so that the problem of deformation caused by uneven heating in the welding process can be effectively avoided, and the welding quality can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an underwater terminal of a steel pipe umbilical cable according to an embodiment of the present invention;
FIG. 2 is a schematic view of a welding structure of the hydraulic connecting pipeline, the hydraulic distribution pipeline and the connecting head in FIG. 1;
fig. 3 is a flowchart of a method for welding a pipeline of an underwater terminal of a steel pipe umbilical cable according to an embodiment of the present invention.
Description of reference numerals:
10-a terminal housing; 20-an optical fiber line;
30-a power line; 40-hydraulic distribution lines;
50-a connector; 11-steel pipe umbilical cable plugging and unplugging valve;
111-a valve body; 112-hydraulic connection lines;
113-fiber connection line; 114-electrical connection lines;
12-hydraulic line output interface; 13-fiber output interface;
14-a power output interface; 61-first centering jig;
62-a second centering fixture; 63-a third centering fixture;
64-a first drive motor; 65-a second drive motor;
66-slide block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the related art, the steel pipe umbilical cable underwater terminal comprises a terminal shell, an optical fiber circuit, an electric power circuit and a hydraulic distribution pipeline, wherein a steel pipe umbilical cable plugging valve, a hydraulic pipeline output interface, an optical fiber output interface and an electric power output interface are arranged on the side face of the terminal shell, and the steel pipe umbilical cable enters the steel pipe umbilical cable underwater terminal from the steel pipe umbilical cable plugging valve. The steel pipe umbilical cable plug valve is provided with hydraulic connection pipeline, optical fiber connection line and electric power connection line, hydraulic distribution pipeline connects between hydraulic connection pipeline and hydraulic line output interface, optical fiber connection is between optical fiber connection line and optical fiber output interface, electric power line connects between electric power connection line and electric power output interface. And the hydraulic distribution pipeline and the hydraulic connecting pipeline are directly welded by manual argon arc welding. However, manual welding is adopted between the hydraulic distribution pipeline and the hydraulic connecting pipeline, and deformation can be generated due to uneven heating in the welding process, so that the problem of poor welding quality can be caused.
In order to solve the problems, the invention provides a steel pipe umbilical cable underwater terminal and a welding method of a pipeline thereof, wherein a connector is arranged between a hydraulic distribution pipeline and a hydraulic connecting pipeline, friction welding is carried out between the connector and the hydraulic distribution pipeline and between the connector and the hydraulic connecting pipeline, the welding end part of the connector and the welding end part of the hydraulic distribution pipeline rub against each other to serve as a heat source, the welding end part of the connector and the welding end part of the hydraulic connecting pipeline rub against each other to serve as a heat source, the welding end part of the connector and the welding end part of the hydraulic distribution pipeline heat simultaneously, and the welding end part of the connector and the welding end part of the hydraulic connecting pipeline heat simultaneously, so that the problem of deformation caused by uneven heating in the welding process can be effectively avoided, and the welding quality can be improved.
The following describes in detail the underwater terminal of the steel pipe umbilical cable and the welding method of the pipeline thereof according to the embodiments of the present invention with reference to specific embodiments.
Fig. 1 is a schematic structural diagram of an underwater terminal of a steel pipe umbilical cable according to an embodiment of the present invention. The terminal housing 10 in fig. 1 is shown only in a partial view.
As shown in fig. 1, an embodiment of the present invention provides a steel pipe umbilical cable underwater terminal, which includes a terminal housing 10, an optical fiber line 20, an electric power line 30, a hydraulic distribution line 40, and a connector 50.
Wherein the terminal housing 10 is a housing having a closed cavity. The side of the terminal shell 10 is provided with a steel pipe umbilical cable plugging valve 11, a hydraulic pipeline output interface 12, an optical fiber output interface 13 and an electric power output interface 14.
One end of the steel pipe umbilical cable plugging valve 11 is used for being connected with a steel pipe umbilical cable, and the other end of the steel pipe umbilical cable plugging valve 11 is used for being connected with the optical fiber line 20, the power line 30 and the hydraulic distribution pipeline 40.
The steel pipe umbilical cable plug valve 11 comprises a valve body 111, a hydraulic connection pipeline 112, an optical fiber connection line 113 and an electric power connection line 114, the hydraulic connection pipeline 112, the optical fiber connection line 113 and the electric power connection line 114 penetrate through the valve body 111, the optical fiber line 20 is connected between the optical fiber connection line 113 and an optical fiber output interface 13, the electric power line 30 is connected between the electric power connection line 114 and an electric power output interface 14, and the hydraulic distribution pipeline 40 is connected with the hydraulic pipeline output interface 12.
The connector 50 is friction welded between the hydraulic distribution line 40 and the hydraulic connection line 112. So set up, through between connector 50 and the hydraulic pressure distribution pipeline 40, carry out friction weld between connector 50 and the hydraulic pressure connecting line 112, the welding tip of connector 50 and the welding tip looks mutual friction of hydraulic pressure distribution pipeline 40 are as the heat source, the welding tip of connector 50 and the welding tip looks mutual friction of hydraulic pressure connecting line 112 are as the heat source, the welding tip of connector 50 and the welding tip of hydraulic pressure distribution pipeline 40 heat simultaneously, the welding tip of connector 50 and the welding tip of hydraulic pressure connecting line 112 heat simultaneously, can effectively avoid producing the problem of deformation because of being heated unevenly among the welding process, thereby can improve welding quality.
The connection head 50, the hydraulic distribution line 40, and the hydraulic connection line 112 may be circular pipes. The connecting head 50, the hydraulic distribution line 40 and the hydraulic connection line 112 have the same diameter. In an alternative embodiment, the diameter of the hydraulic distribution line 40 is less than or equal to 50 mm.
FIG. 2 is a schematic view of a welding structure of the hydraulic connecting pipeline, the hydraulic distribution pipeline and the connecting head in FIG. 1;
fig. 3 is a flowchart of a method for welding a pipeline of an underwater terminal of a steel pipe umbilical cable according to an embodiment of the present invention.
As shown in fig. 3, an embodiment of the present invention provides a method for welding a pipeline of an umbilical cable underwater terminal, including the following steps:
s101, preparing the connecting head 50, the hydraulic distribution pipeline 40 and the hydraulic connecting pipeline 112 before welding.
Specifically, the welding ends of the hydraulic distribution lines 40 and the hydraulic connection lines 112 of the underwater terminal of the steel pipe umbilical and the welding ends of the connection heads 50 are deburred, and the welding ends of the hydraulic distribution lines 40 and the welding ends of the hydraulic connection lines 112 are wiped using ethanol.
The welded end of the hydraulic distribution pipeline 40 is the end surface where the hydraulic distribution pipeline 40 is welded with the connector 50. The welded end faces of the hydraulic connecting pipe 112 are end faces of both ends of the hydraulic connecting pipe 112. The welded end of the hydraulic distribution pipeline 40 is the end surface where the hydraulic distribution pipeline 40 is welded with the connector 50.
The length of the connection head 50 is set according to actual needs.
For the welded end of the hydraulic distribution pipeline 40 and the welded end of the hydraulic connecting pipeline 112 with oil stains, the welded end of the hydraulic distribution pipeline 40 and the welded end of the hydraulic connecting pipeline 112 can be wiped by ethanol, and the defects of air holes, slag inclusion and the like generated in the friction welding process between the connector 50 and the hydraulic distribution pipeline 40 and between the connector 50 and the hydraulic connecting pipeline 112 can be avoided.
The welded end of the hydraulic distribution line 40 and the welded end of the hydraulic connection line 112 may be wiped with other organic solvent with respect to the welded end of the hydraulic distribution line 40 and the welded end of the hydraulic connection line 112 that have oil contamination. In an alternative embodiment, the welded ends of the hydraulic distribution lines 40 and the welded ends of the hydraulic connection lines 112 are wiped by acetone.
And S102, centering the connecting head 50, the hydraulic distribution pipeline 40 and the hydraulic connecting pipeline 112.
Specifically, as shown in fig. 2, the hydraulic distribution line 40 and the hydraulic connection line 112 are respectively installed in a first centering jig 61 and a second centering jig 62 for clamping and centering, the connection head 50 is installed in a third centering jig 63 for clamping, and the connection head 50 is centered between the hydraulic distribution line 40 and the hydraulic connection line 112, and the connection head 50 abuts against the hydraulic distribution line 40.
After the hydraulic connecting line 112 is welded to the connecting head 50, the valve body 111 is fixedly connected to the terminal housing 10.
The second centering fixture 62 holds the hydraulic connecting lines 112, and the second centering fixture 62 can adjust the position of the hydraulic connecting lines 112. The second centering fixture 62 may adjust the position of the hydraulic connecting line 112 by configuring the drive motor such that the drive motor drives the second centering fixture 62.
Before the hydraulic distribution line 40 is welded to the connection head 50, the hydraulic distribution line 40 is connected to the hydraulic line outlet 12. The first centering jig 61 is fixedly connected to the fixing platform, and the hydraulic distribution line 40 is clamped by the first centering jig 61 so that the hydraulic distribution line 40 is fixed in the terminal housing 10.
In an alternative embodiment, the first centering jig 61 clamps the hydraulic distribution line 40, the hydraulic distribution line 40 is fixed, the second centering jig 62 clamps the hydraulic connection line 112, and the second centering jig 62 adjusts the position of the hydraulic connection line 112 such that the hydraulic connection line 112 is centered with respect to the hydraulic distribution line 40 and the hydraulic connection line 112 is pulled apart from the hydraulic distribution line 40 by a predetermined distance.
It should be noted that the predetermined distance between the hydraulic connecting line 112 and the hydraulic distribution line 40 is greater than the length of the connecting head 50. The predetermined distance between the hydraulic connection line 112 and the hydraulic distribution line 40 may be set as desired. In some examples, the predetermined distance between hydraulic connecting line 112 and hydraulic distribution line 40 is greater than the length of connecting head 50 by 1 mm.
The third centering jig 63 clamps the joint head 50 between the hydraulic connecting line 112 and the hydraulic distribution line 40, and centers the joint head 50 between the hydraulic distribution line 40 and the hydraulic connecting line 112.
The third centering fixture 63 may adjust the position of the connector 50 such that the connector 50 is respectively aligned with the hydraulic connecting line 112 and the hydraulic distribution line 40 and abuts against the hydraulic distribution line 40. The third centering jig 63 may adjust the position of the connecting head 50 by configuring a driving motor such that the driving motor drives the third centering jig 63.
And S103, performing friction motion between the connecting head 50 and the hydraulic distribution pipeline 40 and between the connecting head 50 and the hydraulic connecting pipeline 112.
Specifically, the hydraulic connecting line 112 is pushed toward the connection head 50, and the connection head 50 is driven, so that a frictional motion is performed between the connection head 50 and the hydraulic distribution line 40 and between the connection head 50 and the hydraulic connecting line 112.
The second centering jig 62 is provided with a first driving motor 64, the second centering jig 62 is connected with the first driving motor 64, and the first driving motor 64 drives the second centering jig 62 so that the hydraulic connecting line 112 is drawn toward the connecting head 50 along the axis of the hydraulic connecting line.
The third centering jig 63 is provided with a second driving motor 65, the third centering jig 63 is connected with the second driving motor 65, and the second driving motor 65 drives the third centering jig 63, so that the frictional motion is performed between the connecting head 50 and the hydraulic distribution pipeline 40 and between the connecting head 50 and the hydraulic connecting pipeline 112.
In an alternative embodiment, the third centering fixture 63 is provided with a second driving motor 65, the third centering fixture 63 is connected with the second driving motor 65, and the second driving motor 65 drives the third centering fixture 63 to rotate along the axis of the connecting head 50, so that the connecting head 50 and the hydraulic distribution pipeline 40 and the connecting head 50 and the hydraulic connecting pipeline 112 perform a friction rotation movement.
In another alternative embodiment, the third centering fixture 63 is provided with a second driving motor 65, the third centering fixture 63 is connected to the second driving motor 65, and the second driving motor 65 drives the third centering fixture 63 to linearly move back along the radial direction of the connecting head 50, so that a frictional linear movement is performed between the connecting head 50 and the hydraulic distribution pipeline 40 and between the connecting head 50 and the hydraulic connecting pipeline 112.
S104, judging whether the plastic deformation of the welding end part of the connecting head 50, the welding end part of the hydraulic distribution pipeline 40 and the welding end part of the hydraulic connecting pipeline 112 reaches a preset value.
Specifically, if it is judged that the plastic deformation of the welded end of the connection head 50, the welded end of the hydraulic distribution piping 40, and the welded end of the hydraulic connection piping 112 reaches a predetermined value, step S105 is performed; if it is judged that the plastic deformation of the welding end of the connection head 50, the welding end of the hydraulic distribution line 40, and the welding end of the hydraulic connection line 112 has not reached the predetermined value, step S103 is performed.
And S105, welding the connector 50, the hydraulic distribution pipeline 40 and the hydraulic connecting pipeline 112.
Specifically, the movement of the connection head 50 is stopped, and the hydraulic connection line 112 and the connection head 50 are momentarily and rapidly applied with the upsetting pressure and the pressure is maintained until the connection head 50, the hydraulic distribution line 40, and the hydraulic connection line 112 are welded together.
The second drive motor 65 is connected to a slide 66 on the fixed platform and is movable along the axis of the joining head 50. When the connection head 50 is forced on the axis of the connection head 50, the second driving motor 65, the third centering fixture 63 and the connection head 50 can be moved together along the axis of the connection head 50.
The second driving motor 65 drives the third centering fixture 63, so that friction motion is performed between the connector 50 and the hydraulic distribution pipeline 40 and between the connector 50 and the hydraulic connection pipeline 112, heat generated by friction causes plastic deformation and flow of the welding end of the connector 50, the welding end of the hydraulic distribution pipeline 40 and the welding end of the hydraulic connection pipeline 112, molecules between the connector 50 and the hydraulic distribution pipeline 40 begin to diffuse into each other, molecules between the connector 50 and the hydraulic connection pipeline 112 begin to diffuse into each other, and after plastic deformation of the welding end of the connector 50, the welding end of the hydraulic distribution pipeline 40 and the welding end of the hydraulic connection pipeline 112 reaches a preset value, the connector 50 stops moving; the first driving motor 64 drives the second centering fixture 62, the second centering fixture 62 drives the hydraulic connecting pipeline 112 to approach the connecting head 50, so that the hydraulic connecting pipeline 112 applies a first upsetting force and maintains pressure to the connecting head 50 along the axis of the hydraulic connecting pipeline 112, and the connecting head 50 applies a second upsetting force and maintains pressure to the hydraulic distribution pipeline 40 under the action of the first upsetting force until the connecting head 50, the hydraulic distribution pipeline 40 and the hydraulic connecting pipeline 112 are welded together.
In an alternative embodiment, the first upsetting force is 100Mpa to 300Mpa, and the first upsetting force is maintained for 2s to 4 s.
S106, preparing the connecting head 50, the hydraulic distribution pipeline 40 and the hydraulic connecting pipeline 112 after welding.
Specifically, the weld regions between the joining head 50 and the hydraulic distribution piping 40, and the weld regions between the joining head 50 and the hydraulic connecting piping 112 are subjected to the descaling process.
Alternatively, in step S102, the first centering jig 61 and the second centering jig 62 are located inside the terminal housing 10 of the umbilical underwater terminal, the first centering jig 61 is 60mm away from the welded end of the hydraulic distribution line 40, and the second centering jig 62 is 60mm away from the welded end of the hydraulic connection line 112. With this arrangement, the welding between the connection head 50 and the hydraulic distribution line 40 and between the connection head 50 and the hydraulic connection line 112 can be completed in the terminal housing 10.
The friction welding is carried out between the connector 50 and the hydraulic distribution pipeline 40 and between the connector 50 and the hydraulic connecting pipeline 112, the mutual friction between the welding end of the connector 50 and the welding end of the hydraulic distribution pipeline 40 is used as a heat source, the mutual friction between the welding end of the connector 50 and the welding end of the hydraulic connecting pipeline 112 is used as a heat source, the welding end of the connector 50 and the welding end of the hydraulic distribution pipeline 40 are heated simultaneously, the welding end of the connector 50 and the welding end of the hydraulic connecting pipeline 112 are heated simultaneously, the problem of deformation caused by uneven heating in the welding process can be effectively solved, and therefore the welding quality can be improved.
Optionally, the hydraulic connection line 112 is disposed on the steel pipe umbilical plugging valve 11, the hydraulic distribution line 40 is connected to the hydraulic line output interface 12, and a protective gas is introduced into the steel pipe umbilical plugging valve 11 and the hydraulic line output interface 12. With the arrangement, the protective gas is introduced through the steel pipe umbilical cable plugging valve 11, can flow between the connector 50 and the hydraulic connecting pipeline 112, can isolate air, protects a welding seam area between the connector 50 and the hydraulic connecting pipeline 112, effectively improves the welding seam form, and reduces welding seam blowholes and welding thermal cracks; the protective gas is introduced into the hydraulic pipeline output interface 12, so that the protective gas can flow between the connector 50 and the hydraulic distribution pipeline 40, air can be isolated, a welding seam area between the connector 50 and the hydraulic distribution pipeline 40 is protected, the welding seam form is effectively improved, and welding seam air holes and welding thermal cracks are reduced.
Wherein the shielding gas may be argon. In other implementations, the shielding gas may be other gases, and is not specifically configured here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A steel pipe umbilical cable underwater terminal is characterized by comprising a terminal shell, an optical fiber circuit, an electric power circuit, a hydraulic distribution pipeline and a connector;
a steel pipe umbilical cable plugging valve, a hydraulic pipeline output interface, an optical fiber output interface and an electric power output interface are arranged on the side face of the terminal shell, the steel pipe umbilical cable plugging valve is provided with a hydraulic connecting pipeline, an optical fiber connecting circuit and an electric power connecting circuit, the optical fiber circuit is connected between the optical fiber connecting circuit and the optical fiber output interface, the electric power circuit is connected between the electric power connecting circuit and the electric power output interface, and the hydraulic distribution pipeline is connected with the hydraulic pipeline output interface;
the connector friction welding is in between the hydraulic distribution pipeline and the hydraulic connecting pipeline.
2. A method for welding a pipeline of an underwater terminal of a steel pipe umbilical cable is characterized by comprising the following steps:
preparing before welding, performing deburring treatment on the welding end part of a hydraulic distribution pipeline and the welding end part of a hydraulic connecting pipeline of the underwater terminal of the steel pipe umbilical cable and the welding end part of a connector, and wiping the welding end part of the hydraulic distribution pipeline and the welding end part of the hydraulic connecting pipeline by using ethanol;
centering, namely respectively installing the hydraulic distribution pipeline and the hydraulic connecting pipeline into a first centering clamp and a second centering clamp for clamping and centering, installing the connector into a third centering clamp for clamping, centering the connector between the hydraulic distribution pipeline and the hydraulic connecting pipeline, and abutting the connector with the hydraulic distribution pipeline;
carrying out friction movement, pushing the hydraulic connecting pipeline to approach the connector, and driving the connector, so that friction movement is carried out between the connector and the hydraulic distribution pipeline and between the connector and the hydraulic connecting pipeline;
welding, if the plastic deformation of the welding end part of the connector, the welding end part of the hydraulic distribution pipeline and the welding end part of the hydraulic connection pipeline reaches a preset value, stopping the connector from moving, and instantly and quickly applying upsetting pressure to the hydraulic connection pipeline and the connector and maintaining the pressure until the connector, the hydraulic distribution pipeline and the hydraulic connection pipeline are welded together;
and (4) performing welding post-treatment, namely performing fish scale pattern removing treatment on the welding seam region between the connector and the hydraulic distribution pipeline and the welding seam region between the connector and the hydraulic connection pipeline.
3. The method of welding pipes of an umbilical of steel pipes of claim 2, wherein in the step of performing the centering process, the first centering jig and the second centering jig are located inside a terminal housing of the umbilical of steel pipes, the first centering jig is located at a distance of 60mm from a welding end of the hydraulic distribution pipe, and the second centering jig is located at a distance of 60mm from a welding end of the hydraulic connection pipe.
4. The method for welding the pipelines of the underwater terminal of the steel pipe umbilical cable according to claim 3, wherein the hydraulic connection pipeline is arranged on the steel pipe umbilical cable plugging and unplugging valve, the hydraulic distribution pipeline is connected with the output interface of the hydraulic pipeline, and protective gas is introduced into the steel pipe umbilical cable plugging and unplugging valve and the output interface of the hydraulic pipeline.
5. The method of welding the pipes of the underwater terminal of the steel pipe umbilical as claimed in claim 2, wherein the centering process of the second centering jig clamps the hydraulic connection pipe to be centered with the hydraulic distribution pipe and pulls a predetermined distance between the hydraulic connection pipe and the hydraulic distribution pipe.
6. The method of claim 2, wherein in the step of performing the frictional movement, the second centering fixture is connected to a first driving motor, and the first driving motor drives the second centering fixture so that the hydraulic connection line is drawn toward the connector along an axis of the hydraulic connection line.
7. The method of welding pipes of an underwater terminal of a steel pipe umbilical of claim 6, wherein in the welding step, the first driving motor drives the second centering jig so that the hydraulic connection line applies a first upsetting force to the connection head along an axis of the hydraulic connection line.
8. The method of welding a pipeline of a steel pipe umbilical underwater terminal of claim 7, wherein the first upsetting force is 100Mpa to 300Mpa, and the first upsetting force is maintained for 2s to 4 s.
9. The method for welding the pipeline of the underwater terminal of the steel pipe umbilical cable as claimed in claim 7, wherein the third centering jig is connected to a second driving motor, and the second driving motor drives the third centering jig to rotate, so that the frictional rotation motion is performed between the connection head and the hydraulic distribution pipeline and between the connection head and the hydraulic connection pipeline.
10. The method of welding the pipelines of the underwater terminal of the steel pipe umbilical cable of claim 9, wherein in the welding step, the second driving motor is connected to a slider on a fixed platform, and the second driving motor is movable along an axis of the connector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210868765.1A CN115070194B (en) | 2022-07-22 | 2022-07-22 | Underwater terminal of steel pipe umbilical cable and welding method of pipeline of underwater terminal |
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| CN202210868765.1A CN115070194B (en) | 2022-07-22 | 2022-07-22 | Underwater terminal of steel pipe umbilical cable and welding method of pipeline of underwater terminal |
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| CN215112050U (en) * | 2021-03-30 | 2021-12-10 | 龙工(上海)机械部件有限公司 | Hydraulic steel pipe assembly |
| CN114374179A (en) * | 2021-12-07 | 2022-04-19 | 海洋石油工程股份有限公司 | Monomer formula is navel cord cable terminal under water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2740742A1 (en) * | 1976-09-09 | 1978-03-16 | Otto Fuertinger | Multiway pipe junction for hydraulic pipes - has base member for selective attachment of stub pipes by friction welding |
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| CN115070194B (en) | 2023-12-26 |
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