CN219513760U - Submarine flexible pipe cable crossing protection device - Google Patents

Abstract

The utility model discloses a submarine flexible pipe cable crossing protection device, which comprises a gate-shaped sheath, wherein a pipe cable fixing protection groove is formed in a groove formed in the upper part of the gate-shaped sheath, a gate-shaped sheath filled with cement mortar is arranged at the crossing position of a newly laid flexible pipe cable and an original submarine pipeline, the newly laid flexible pipe cable is firmly wrapped and tightly clamped with a cement pressing block laid on the original pipeline to form a protrusion at the lower part of the sheath, the protrusion is embedded into a cement pressing block pit, mortar in the gate-shaped sheath is solidified to enable the protrusion and the protrusion to be rigidly clamped with each other, so that the long-term dislocation is ensured, the bottom of the gate-shaped sheath has a certain thickness, the control of the crossing point position of the original submarine pipeline and the newly laid flexible pipe cable meets the requirement, the long-term use is stable and reliable, the whole construction is synchronously carried out when the newly laid flexible pipe cable is laid, the whole engineering cost is low, the operation risk is small, the influence by the environment such as sea condition is small, and the engineering economic benefit is good.

Description

Submarine flexible pipe cable crossing protection device

Technical Field

The utility model relates to the technical field of ocean engineering construction, in particular to a submarine flexible pipe cable crossing protection device.

Background

The submarine cable is used as an important structural carrier for ocean oil gas development engineering, bears the heavy duty of conveying oil gas, electric power and the like, and is a life line of offshore engineering facilities. According to the standard requirements, when the newly laid submarine pipeline and the original submarine pipeline cross, the original pipeline needs to be protected, and the vertical distance between the pipelines at the crossing position should be ensured to be not less than 30 cm.

At present, the treatment method for offshore construction is to place a certain amount of concrete briquettes or piers above the original pipeline along the direction of the original pipeline, form a transition gentle slope by stacking sand bags, and then lay a new pipeline above the transition gentle slope, thereby realizing the protection treatment of the original pipeline. Because the newly laid pipe cable is directly placed on the pressing block above the original pipeline, the pipe cable can be staggered for a certain time. Meanwhile, the size of the pressing block above is limited, so that the position change of a newly laid pipe cable is difficult to effectively limit even if a sufficient number of pressing blocks are increased, and the use of a large number of pressing blocks can cause the increase of external pressure of an original pipeline, so that the operation safety is influenced.

To solve the above problems, we propose a subsea flexible umbilical crossover protection device.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the submarine flexible pipe cable crossing protection device, which is stable and reliable in long-term use without hard collision with a pipeline part because the position and distance between the crossing points of the original submarine pipeline and the newly laid flexible pipe cable are controlled to meet the requirements compared with the prior art; the whole construction is synchronously carried out when the flexible pipe cable is newly laid.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a submarine flexible pipe cable crossing protection device, includes a gate sheath, the gate sheath adopts the fashioned door arch shaped membrane bag of polymer membrane sewing, the fixed protection groove of pipe cable is installed through upper portion concave slot system to the gate sheath, the hoist and mount knot has been sewn respectively to both ends and the both sides in middle part of gate sheath.

Through filling cement mortar in the door-type sheath of membrane bag structure, wrap up the pipe cable fixed protection groove of upper portion with newly laying flexible pipe cable in, the lower part pastes on the cement briquetting of installation on former seabed pipeline, realizes crossing spacing between the pipe cable, and is protected not by wearing and tearing dislocation respectively, satisfies long-term use stability.

Preferably, a plurality of groups of partitions are arranged in the membrane bag of the door-shaped sheath, cement mortar dry materials are filled in the membrane bag, and the protection form of design requirements is realized by swelling different partitions after filling.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the gate-type sheath filled with cement mortar is arranged at the crossing position of the newly laid flexible pipe cable and the original submarine pipeline, the newly laid flexible pipe cable is firmly wrapped and clamped with the cement pressing block laid on the original pipeline to form the protrusion at the lower part of the sheath, the protrusion is embedded into the cement pressing block pit, mortar in the gate-type sheath is solidified to enable the two parts to be rigidly clamped, and the long-term in-place dislocation is ensured not to occur; the bottom of the gate-type sheath has a certain thickness, so that the position and distance control of the crossing point of the original submarine pipeline and the newly laid flexible pipe cable meet the requirements, and the gate-type sheath is free from local hard collision with the pipeline and stable and reliable in long-term use; the whole construction is synchronously carried out when the flexible pipe cable is paved newly, the newly added investment of marine construction ship equipment or diving is not needed, the whole engineering cost is low, the operation risk is low, the influence by the environment such as sea conditions is small, and the method has good engineering economic benefit.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Like parts are designated with like reference numerals throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram of the installation completion of a preferred embodiment of the present utility model;

FIG. 2 is a schematic diagram of the construction of a crossover protection device in accordance with a preferred embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a preferred embodiment of the present utility model installed in a finished transverse orientation;

FIG. 4 is a schematic longitudinal cross-section of an installation completion of a preferred embodiment of the present utility model;

FIG. 5 is a schematic diagram of the installation of the original pipeline briquetting according to the preferred embodiment of the utility model.

Wherein, the corresponding relation between the reference numerals and the components in the figures 1-5 is as follows:

1. a crossover protection device; 2. newly laying a flexible pipe cable; 3. seabed. 4. An original subsea pipeline; 5. a cement briquetting; 11. a door-type sheath; 12. a cable fixing protection groove; 13. and (5) hoisting the buckle.

Description of the embodiments

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

A subsea flexible umbilical crossover protection device in accordance with embodiments of the present utility model is described in detail below with reference to fig. 1-5.

As shown in figure 1, the submarine flexible pipe cable crossing protection device is characterized in that cement mortar is filled in a sheath of a film bag structure, a newly laid flexible pipe cable 2 is wrapped in a groove at the upper part of the sheath, the lower part of the newly laid flexible pipe cable is attached to a cement pressing block 5 arranged on an original submarine pipeline 4, the separation between the crossed pipe cables is realized, the crossed pipe cables are respectively protected from abrasion and dislocation, and long-term use stability is met.

As shown in fig. 2, the cross-over protection device 1 comprises a door-shaped sheath 11, a pipe cable fixing protection groove 12 and hoisting buckles 13, after the cross-over protection device 1 is manufactured, the cross-over protection device 1 is sleeved at the installation position of a newly paved flexible pipe cable 2, the pipe cable fixing protection groove 12 is used for fixing the cross-over protection device, the cross-over protection device keeps the installation position of the pipe cable unchanged, cement mortar dry materials are filled into the door-shaped sheath 11, the cross-over protection device is stitched after being filled into each sub-cabin, the cross-over protection device is installed by hoisting buckles 13 together with the newly paved flexible pipe cable 2 in a descending mode, the cross-over protection device is placed on a cement pressing block 5 pre-paved by an original submarine pipeline 4, the door-shaped sheath 11 is clamped on the cement pressing block 5, a diver or an underwater robot presses two sides of the upper portion of the door-shaped sheath 11, so that a membrane bag is deformed and embedded into a pit between the cement pressing blocks 5, internal cement mortar is gradually solidified, the formed hard bulge is meshed with the pit between the cement pressing blocks 5, good fixation is formed, the cross-over protection device can not move in the subsequent position, and meanwhile, the door-shaped sheath 11 with a certain thickness is installed, the cross-shaped sheath 2 is achieved, the requirement that the cross-shaped flexible pipe cable 2 and the cross-over protection device is vertically released from the original submarine pipeline 4 in a position in a direction of more than 30 cm.

The door-shaped sheath 11 is a membrane bag sewn by a polymer membrane to meet the requirement of a door arch shape, the door arch is slightly wider than the cement pressing block 5 in size, the requirement of being clamped above the cement pressing block 5 is met, a plurality of subareas are arranged in the membrane bag, the different subareas bulge after filling is met, and the protection form of design requirements is realized; the upper part of the door-shaped sheath 11 is provided with a reserved groove, a cable fixing and protecting groove 12 is sewn and installed in the groove, embedded installation, locking installation and side surface sewing installation of the newly laid flexible pipe cable 2 are met, and a hoisting buckle 13 meeting hoisting requirements is sewn and installed on the side surface, so that the whole sheath can be hoisted and installed.

The pipe cable fixing protection groove 12 is a connecting piece reserved when the upper part of the door-shaped sheath 11 is manufactured and used for being sunk into a groove for installation of a newly laid flexible pipe cable 2, a groove-shaped structure is adopted, after the newly laid flexible pipe cable 2 is embedded, locking is carried out, the installation position of the crossing protection device 1 and the newly laid flexible pipe cable 2 is fixed, the tightening of the outer wall of the pipe cable can be realized through the modes of binding belts or retracting buckles, the fastening failure can be avoided during installation and subsequent use, relative displacement can not occur between the pipe cable and the newly laid flexible pipe cable 2, and according to the specification of the pipe, the fixing force requirement and the like, different clamping modes and different numbers of tightening devices can be sewn and installed in the groove on the upper part of the door-shaped sheath 11, so that the fixing of the pipe cable can be realized.

The hoisting buckle 13 is sewn on two sides of the upper part of the door-shaped sheath 11 through high-strength nylon wires, two ends and the middle are sewn and fixed, and the whole set of door-shaped sheath 11 can be provided with hoisting buckles 13 with different numbers, different materials and different loading specifications according to the length, the width, the weight of internal filling mortar and the like.

As shown in fig. 3 to 5, the implementation steps of the present patent are as follows:

the first step: and according to the designed and determined position of the crossing point of the newly laid flexible pipe cable 2 and the original submarine pipeline 4, stopping laying when the newly laid flexible pipe cable 2 is close to the position, recovering the buried plow, laying the cement pressing blocks 5 at the position of the expected crossing point of the original submarine pipeline 4, and arranging according to 3 groups of the cement pressing blocks close to each other, thereby being beneficial to realizing the position adjustment of the newly laid flexible pipe cable 2 for subsequent installation.

And a second step of: and continuing to lay the newly laid flexible pipe 2, adjusting the mud-bearing position of the newly laid flexible pipe 2 to finally enable the newly laid flexible pipe 2 to span from the cement pressing 5 block position, marking the crossing point of the newly laid flexible pipe 2 and the original submarine pipeline 4 under water by a diver or an underwater robot, operating the laying equipment to recycle, installing the crossing protective device 1 according to the requirement when the newly laid flexible pipe 2 is positioned on the ship deck of the construction ship at the marked position, filling cement mortar drier into the door-type sheath 11, and plugging the process port of the door-type sheath 11 after the newly laid flexible pipe 2 is fully filled.

And a third step of: the lifting rigging for cement briquetting construction is installed, according to the same mode of lowering the cement briquetting 5, the newly-laid flexible pipe 2 section wrapped with the crossing protection device 1 is lowered by matching with pipe cable laying equipment, the ship attitude is controlled, the crossing protection device 1 is adjusted to fall on the placed cement briquetting 5, the cement mortar dry material gradually absorbs seawater to carry out solidification reaction, at the moment, the crossing protection device 1 with certain flexibility is tightly pressed on the cement briquetting by a diver under water, at the moment, the bottom of the door-shaped sheath 11 can be deformed to form bulges, the bulges are embedded into pits of the cement briquetting 5, and firm limit in horizontal positions of the crossing protection device 1 and the cement briquetting 5 is formed after solidification.

Fourth step: and (3) finishing the fixation of the crossing protection device 1, and carrying out underwater inspection after the cement mortar is basically solidified, so as to ensure that the installation meets the design requirement. And then the ditching device is lowered to ditche the newly laid flexible pipe cable 2 which is not ditched and buried at the two ends of the crossing protection device 1, so that the newly laid flexible pipe cable 2 is ensured to be completely buried, and long-term use safety is facilitated. And then the burying plow is lowered to continue the burying construction of the newly laid flexible pipe cable 2 until the final completion.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Claims (2)

1. The utility model provides a submarine flexible pipe cable crossing protection device, includes door type sheath (11), its characterized in that, door type sheath (11) are the door arch shaped membrane bag that adopts the polymer membrane to make the shaping, pipe cable fixed protection groove (12) are installed through upper portion concave slot system to door type sheath (11), hoist and mount knot (13) are installed to both ends and the both sides at middle part of door type sheath (11) are made respectively.

2. A subsea flexible pipe cable crossing protection as claimed in claim 1, characterized in that a multi-component zone is provided in the membrane pocket of said portal sheath (11).