CN207830756U - A kind of novel anti-hanging submarine pipeline - Google Patents

Abstract

The utility model discloses a novel anti-suspension submarine pipeline, which comprises an inner pipe, an outer pipe, an anti-corrosion layer, a thermal insulation layer, and a concrete counterweight layer. A first anti-rust layer, a first Protective layer, filled insulation layer, second protective layer and second antirust layer, the outer tube and the anticorrosion layer are successively provided with a sound insulation layer and a waterproof layer, and the outer tube is evenly provided with a number of trapezoidal reinforcing ribs, Blocks are respectively provided on both sides of one end of the trapezoidal reinforcing rib protruding into the sound-insulation layer, and slots cooperating with the blocks are arranged in the sound-insulation layer. The pipeline in the utility model can effectively enhance the structural strength, and the heat preservation and sound insulation effects are remarkable, the production cost is low, and it is suitable for wide-scale popularization and use; moreover, a number of trapezoidal reinforcing ribs are set to increase the structural strength of the oil pipeline, and at the same time, the trapezoidal reinforcing ribs are passed through The card block is set in the card slot of the sound insulation layer, the connection is stable, and it is not easy to fall off.

Description

A new anti-suspension submarine pipeline

technical field

The utility model relates to the technical field of oil and gas pipelines, in particular to a novel anti-suspension submarine pipeline.

Background technique

Due to the high freezing point of crude oil, the subsea pipelines for oil or oil-gas-water mixed transportation generally need to be insulated. At present, the subsea pipelines used in offshore oil and gas fields for oil transportation or mixed transportation of oil, gas and water are generally single-layer insulation weight pipes, double-layer insulation pipes, etc. In the sandy seabed area with relatively harsh environmental conditions, if a single-layer thermal insulation weight pipe is used, in order to improve its stability, a thicker concrete weight layer is required, resulting in a larger unit weight of the pipe, and the bearing capacity of the pipe during laying Only the inner steel pipe is the self-weight, so its strength may not meet the requirements; at the same time, the joint processing of the single-layer counterweight pipe has always been a problem, and there is a risk of poor sealing and thermal insulation failure. If double-layer insulation pipes are used, both inner and outer layers of steel pipes can bear their own weight when the pipeline is laid. Although the problem of laying strength can be solved, it is an uneconomical method to increase the wall thickness of the steel pipe to improve the stability of the pipeline. At the same time, for Too thick steel pipes have low welding performance and efficiency.

In the shallow waters of the reef area, the floating tow method is generally used for pipeline laying. If a single-layer insulation weight pipe is used, since the pipe is not protected by a concrete weight layer at the joint, the joint may be damaged during the dragging process. If a double-layer pipe insulation pipe is used, the outer steel pipe directly contacts the reef, which may also cause damage.

Utility model content

The utility model mainly overcomes the shortage of manpower consumption in the existing manual detection technology, and proposes a novel anti-suspension submarine pipeline with thermal insulation, sound insulation and good compression resistance.

The technical solution provided by the utility model to solve the above technical problems is: a new anti-suspension submarine pipeline, including an inner pipe, an outer pipe, an anti-corrosion layer, a thermal insulation layer, and a concrete counterweight layer. A first anti-rust layer, a first protective layer, a filling insulation layer, a second protective layer and a second anti-rust layer are provided, and a sound insulation layer and a waterproof layer are arranged between the outer tube and the anti-corrosion layer in turn, and the outer tube A number of trapezoidal reinforcing ribs are evenly arranged, and the two sides of one end of the trapezoidal reinforcing ribs protruding into the sound-insulating layer are respectively provided with clamping blocks, and the sound-insulating layer is provided with clamping grooves cooperating with the clamping blocks.

Further, the inner wall of the inner tube is evenly spaced with a number of S-shaped ribs, and a number of ball grooves are evenly arranged on the S-shaped ribs, and rolling balls are arranged in the ball grooves. Lubricating passages are provided in the S-shaped ribs on both sides of the ball groove, one end of the lubricating passage communicates with the ball groove, and the other end of the lubricating passage communicates with the inner cavity of the pipe body.

Further, the filled insulation layer is provided with spacer bars and hoop steel bars, and the spacer bars are connected in series through hoop bar bars.

Further, reinforcing ribs are provided on the insulation layer.

Further, the filled thermal insulation layer is a filled thermal insulation rock formation.

Further, the cross-sectional shapes of the inner pipe, the outer pipe and the anti-corrosion layer are all regular polygons.

The beneficial effects of the utility model are: the pipeline in the utility model can effectively enhance the structural strength, and the heat preservation and sound insulation effects are remarkable, the production cost is low, and it is suitable for wide-scale popularization and use; and setting several trapezoidal reinforcing convex ribs increases the structural strength of the petroleum pipeline At the same time, the trapezoidal reinforcing rib is set in the slot of the sound insulation layer through the clamping block. The connection is stable and not easy to fall off. Setting the sound insulation layer and waterproof outer layer on the outside of the pipe can achieve the effect of sound insulation and fire prevention. The cavity is filled with thermal insulation rock wool to increase the thermal insulation performance of the pipeline. In addition, a number of S-shaped ribs are evenly arranged on the inner wall of the oil pipeline to make the oil passing through the inner wall of the oil pipeline change the flow direction continuously and improve the turbulence of the oil. Multiple ball grooves are set on the edge, and the balls are rolled in the ball grooves. When the oil agglomerates on the inner wall of the oil pipeline and reaches a certain volume, it touches the balls. The rolling balls can drive the oil agglomerates to separate from the inner wall of the pipeline, which can effectively prevent During the long-term transportation of the oil pipeline, the oil pipeline is blocked by the adhesion of oil to the inner wall of the pipeline, and the delivery effect is good. During the process of oil transportation in the pipeline, the ball can be lubricated through the lubrication channel to ensure the rolling effect of the ball and extend the life of the ball. service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is described further.

As shown in Figure 1, a novel anti-suspension submarine pipeline of the present invention includes an inner pipe 1, an outer pipe 2, an anti-corrosion layer 3, an insulation layer 4, and a concrete counterweight layer 5. The inner pipe 1 and the outer pipe 2 The first anti-rust layer 6, the first protective layer 7, the filling insulation layer 8, the second protective layer 9 and the second anti-rust layer 10 are arranged in sequence, and the outer pipe 2 and the anti-corrosion layer 3 are arranged in sequence The sound insulation layer 11 and the waterproof layer 12, the outer tube 2 is also uniformly provided with a number of trapezoidal reinforcing ribs 13, and the two sides of one end of the trapezoidal reinforcing ribs 13 protruding into the sound insulation layer 11 are respectively provided with clamping blocks 14, so The sound insulation layer 11 is provided with a locking groove 15 that cooperates with the locking block 14 .

The pipeline in the utility model can effectively enhance the structural strength, and the heat preservation and sound insulation effects are remarkable, the production cost is low, and it is suitable for wide-scale popularization and use; and a number of trapezoidal reinforcing convex ribs 13 are arranged to increase the structural strength of the oil pipeline, and at the same time, the trapezoidal reinforcing convex ribs 13 is set in the card slot 15 of the sound insulation layer through the clamp block 14, the connection is stable, and it is not easy to fall off. The sound insulation layer 11 and the waterproof layer 12 are set on the outside of the pipe to achieve the effect of sound insulation and fire prevention. Insulating rock wool increases the insulation performance of the pipe.

Wherein when the pipeline is transporting oil, the preferred embodiment is that the inner wall of the inner pipe 1 is uniformly provided with several S-shaped ribs at equal intervals, and several ball grooves are uniformly arranged on the S-shaped ribs, and in the Rolling balls are arranged in the ball groove, and lubricating passages are arranged in the S-shaped ribs on both sides of the ball groove. cavities communicate with each other.

Evenly setting several S-shaped ribs on the inner wall of the oil pipeline can continuously change the flow direction of the oil passing through the inner wall of the oil pipeline and improve the turbulence of the oil. Set multiple ball grooves on the S-shaped ribs and roll them in the ball grooves. Rolling balls, when the oil agglomerates on the inner wall of the oil pipeline and touches the balls, the rolling balls can drive the oil agglomerates to separate from the inner wall of the pipeline as a whole, which can effectively prevent the oil from sticking to the inner wall of the pipeline during the long-term transportation of the oil pipeline. The oil pipeline is blocked, and the delivery effect is good. During the process of oil transportation in the pipeline, the oil can pass through the lubrication channel to lubricate the balls, ensuring the rolling effect of the balls and prolonging the service life of the balls.

In order to prevent the relative position of the inner pipe 1 and the outer pipe 2 from changing greatly in the axial direction, a preferred embodiment is that the filling insulation layer 8 is provided with a spacer bar 16 and a hoop steel bar 17, and the spacer The bars 16 are connected in series via hoop bars 17 .

To improve the strength of the pipeline, preferably, the insulation layer 4 is provided with reinforcing ribs.

In this embodiment, the filled insulation layer 8 is a filled glass wool layer, and the cross-sectional shapes of the inner tube 1, the outer tube 2, and the anti-corrosion layer 3 are all regular polygons. This structure can effectively enhance the compressive performance of the inner pipe 1 and the outer pipe 2, and greatly enhance the structural strength.

The above description does not limit the utility model in any form. Although the utility model has been disclosed through the above-mentioned embodiments, it is not used to limit the utility model. Within the scope of the scheme, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but if it does not deviate from the content of the technical scheme of the utility model, the above embodiments are made according to the technical essence of the utility model Any simple modifications, equivalent changes and modifications still fall within the scope of the technical solutions of the present utility model.

Claims (6)

1. a kind of novel anti-hanging submarine pipeline, which is characterized in that including inner tube, outer tube, erosion resistant coating, insulating layer, concrete matched Double-layer is equipped with the first antirust coat, the first protective layer, filling heat insulating wall, the second protective layer and the successively between said inner tube, outer tube Two antirust coats, are equipped with puigging, waterproof layer successively between the outer tube, erosion resistant coating, the outer tube is also evenly arranged with several ladders Shape reinforces fin, and trapezoidal one end both sides for stretching into sound insulating layer of fin of reinforcing are respectively arranged with fixture block, in the sound insulating layer It is provided with and the mutually matched card slot of fixture block.

2. one kind according to claim 1 is novel to prevent hanging submarine pipeline, which is characterized in that the inner wall of said inner tube is first-class Spacing is evenly arranged with several S types fins, is evenly arranged with several ball grooves on the S types fin, is rolled in the ball grooves It is dynamic to be provided with ball, it is provided with lubrication channel, one end of the lubrication channel and rolling in the S type fins of the ball grooves both sides Pearl slot is interconnected, and the other end of the lubrication channel and the inner cavity of pipeline body are interconnected.

3. one kind according to claim 2 is novel to prevent hanging submarine pipeline, which is characterized in that set in the filling heat insulating wall There are spacer bar, circumferential reinforcement, the spacer bar to connect by circumferential reinforcement.

4. one kind according to claim 1 is novel to prevent hanging submarine pipeline, which is characterized in that the insulating layer, which is equipped with, to be added Strengthening tendons.

5. one kind according to claim 1 is novel to prevent hanging submarine pipeline, which is characterized in that the filling heat insulating wall is to fill out Fill heat preservation rock stratum.

6. one kind according to claim 1 is novel to prevent hanging submarine pipeline, which is characterized in that said inner tube, outer tube, anti-corrosion The cross sectional shape of layer is regular polygon.