Laying device for underwater pipeline

Abstract

The invention relates to the technical field of underwater pipeline laying, in particular to a laying device for an underwater pipeline. Comprising a laying frame composed of two L-shaped frames, an arc-shaped channel and a moving channel are formed between the two L-shaped frames, an arc-shaped stopping base is arranged in the moving channel, a water bucket is fixed to the bottom of the laying frame, a piston is arranged in the water bucket, a push rod is connected between the piston and the arc-shaped stopping base, side cavities are formed in the L-shaped frames, and a plurality of shells are fixed to the L-shaped frames. And a round seat penetrating through the side cavity is rotationally installed in the shell, a cavity located in the round seat is formed in the round seat in a penetrating mode, an in-out cavity is formed in the middle of the cavity, and rubber speed reduction blocks installed in the cavity in a sliding mode are arranged on the two sides of the in-out cavity. When the pipeline moves, the arc-shaped stopping base is pushed to extrude into the water bucket, the moving speed of the pipeline is reduced, if the pipeline is heavy, water in the water bucket quickly enters the cylinder body, the rubber speed reduction block makes contact with the pipeline, the friction force of pipeline moving is increased, and therefore the speed of the pipeline entering the water surface initially is controlled.

Description

Technical Field

[0001] The invention relates to the technical field of underwater pipeline laying, and in particular to an underwater pipeline laying device. Background Art

[0002] Underwater pipeline laying is a complex and critical engineering operation, which is widely used in water conservancy facilities and underwater energy transmission. At present, there are many methods for underwater pipelines, but there is a common problem in construction, that is, the stability of pipeline laying.

[0003] The document with the publication number of "CN219510275U" points out that it is carried out on a laying ship by laying the pipeline, and sealing it on the laying ship, and then the pipeline sections are slid down through the device. Laying underwater means that after the pipeline is made, the pipeline is placed on the workbench surface and slides from the arc groove to the pallet, which sends the pipeline underwater to complete the laying. The auxiliary vehicle is towed by a traction rope, one end of which is fixed on the laying ship. Machinery can be installed on the auxiliary vehicle to act on the pipeline. , which is convenient for auxiliary pipeline laying, and the vertical plates and horizontal clamps on both sides strengthen the connection of the whole device , making the device more stable. However, in practice, the speed at which water enters the pipe is often another reason for the instability of the pipe.

[0004] When the pipeline enters the water too quickly, it will be subjected to a huge impact force the moment it touches the water surface, which poses a great threat to the structural integrity of the pipeline. If the pipeline enters the water too quickly and the force is uneven, it may bend and deform. Under the action of the water flow, the pipeline that enters the water quickly is difficult to sink according to the predetermined route and position, resulting in a large deviation, making it impossible to accurately connect the pipeline with upstream and downstream facilities, increasing the difficulty and cost of subsequent adjustments, and may even require re-laying, resulting in a huge waste of resources. Summary of the invention

[0005] The purpose of the present invention is to provide an underwater pipeline laying device in view of the problems existing in the background technology.

[0006] The technical solution of the present invention is: an underwater pipeline laying device, comprising a laying frame composed of two L-shaped frames, an arc-shaped channel and a moving channel are formed between the two L-shaped frames, an arc-shaped blocking seat is arranged in the moving channel, a water bucket is fixed at the bottom of the laying frame, a piston is arranged in the water bucket, and a push rod is connected between the piston and the arc-shaped blocking seat; The L-shaped frame is provided with a side cavity, and a plurality of shells are fixed to the L-shaped frame. A round seat passing through the side cavity is rotatably installed in the shell, and a chamber located in the round seat is provided through the round seat. The middle of the chamber is an entry and exit cavity, and rubber speed reduction blocks slidably installed in the chamber are provided on both sides of the entry and exit cavity. A cylinder body connected to a water bucket is fixed to the bottom of the shell, a piston rod is provided in the cylinder body, and a conical rubber column is provided on the top of the piston rod, and the conical rubber column can be moved into the entry and exit cavity.

[0007] Preferably, the top of the round seat is a top cover, which is rotatably installed in the shell, the bottom of the shell and the bottom of the round seat are both connected to the inlet and outlet cavity, and the rubber speed reduction block is provided with an arc surface on one side close to the inlet and outlet cavity.

[0008] Preferably, slide grooves are provided on both sides of the chamber, a sliding block is fixed to the rubber deceleration block, the sliding block is slidably installed in the slide groove, and a spring is fixed between the sliding block and the slide groove.

[0009] Preferably, the water bucket is provided with a water filling port, and a conduit is fixed and connected between the water bucket and the plurality of cylinder bodies.

[0010] Preferably, a movable seat is fixed at the bottom of the arc-shaped resisting seat, the movable seat is located in the movable channel, a support arm is fixed between the push rod and the movable seat, a slot is opened at the top of the support arm, and a rubber plug inserted into the slot is fixed at the bottom of the movable seat.

[0011] Preferably, a landing frame is fixed at the end of the path of the laying frame, and the landing frame is located below the moving channel.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: through the arrangement of the laying frame, the present invention can push the arc-shaped resisting seat to be squeezed into the water bucket when the pipeline moves, thereby reducing the moving speed of the pipeline, and if the pipeline is heavy, the water in the water bucket will quickly enter the cylinder body, so that the rubber deceleration block and the pipeline are in contact, increasing the friction of the pipeline movement, thereby controlling the speed of the pipeline entering the water surface for the first time, ensuring the safety of the pipeline, and when the pipeline is subsequently laid, the speed limit on the pipeline automatically disappears, thereby improving the laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A side view structural schematic diagram of; Figure 3 It is a structural schematic diagram of the mobile channel of the present invention; Figure 4 It is a structural schematic diagram of the round seat of the present invention; Figure 5 for Figure 4 A schematic cross-sectional structure diagram of ; Figure 6It is a structural schematic diagram of the arc-shaped retaining seat of the present invention.

[0014] Figure numerals: 1. L-shaped frame; 2. arc-shaped channel; 3. arc-shaped resistance seat; 4. moving channel; 5. receiving frame; 6. bucket; 7. support arm; 8. push rod; 9. shell; 10. slide groove; 11. slider; 12. spring; 13. conduit; 14. side cavity; 61. piston; 62. water inlet; 91. inlet and outlet cavity; 92. round seat; 93. chamber; 94. rubber speed reduction block; 95. cylinder body; 96. piston rod; 97. conical rubber column; 98. arc-shaped surface; 99. top cover; 100. moving seat; 200. rubber plug; 300. slot. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Refer to the attached Figure 1-Figure 6 , an underwater pipeline laying device, comprising a laying frame composed of two L-shaped frames 1, an arc-shaped channel 2 and a moving channel 4 are formed between the two L-shaped frames 1, an arc-shaped blocking seat 3 is arranged in the moving channel 4, a water bucket 6 is fixed at the bottom of the laying frame, a piston 61 is arranged in the water bucket 6, and a push rod 8 is connected between the piston 61 and the arc-shaped blocking seat 3; The L-shaped frame 1 is provided with a side cavity 14, and a plurality of shells 9 are fixed to the L-shaped frame 1. A round seat 92 passing through the side cavity 14 is rotatably installed in the shell 9, and a chamber 93 located in the round seat 92 is provided through the round seat 92. The middle part of the chamber 93 is an entry and exit cavity 91, and rubber deceleration blocks 94 slidably installed in the cavity 93 are provided on both sides of the entry and exit cavity 91. A cylinder body 95 connected to the water bucket 6 is fixed to the bottom of the shell 9, and a piston rod 96 is provided in the cylinder body 95. A conical rubber column 97 is provided on the top of the piston rod 96, and the conical rubber column 97 can be moved into the entry and exit cavity 91.

[0017] exist Figure 1 and Figure 2 In the embodiment, the pipeline is placed at one end of the laying frame. When laying the pipeline, this end of the laying frame is fixed on the laying ship, and the other end is inserted into the water. At this time, the water bucket 6 will be filled with water, and the pipeline is placed on the arc channel 2. The arc-shaped retaining seat 3 will hold the pipeline. As the pipeline continues to enter and move, the pipeline will push the arc-shaped retaining seat 3 to move in the moving channel 4, and the arc-shaped retaining seat 3 drives the push rod 8 to move, so that the push rod 8 pushes the piston 61 to squeeze into the water bucket 6. In this squeezing process, due to the resistance of water, the moving speed of the pipeline will be reduced, and the heavier the pipeline is, the faster it pushes the push rod 8 during movement, so this moving speed is related to the deadweight of the pipeline. In addition, when the pipeline moves, it will contact the round seats 92 set on both sides of the laying frame. The round seats 92 can limit the pipeline, stabilize the movement of the pipeline and prevent it from deflecting. When the water in the water bucket 6 is squeezed, the water will be discharged into the cylinder body 95. As the water in the cylinder body 95 continues to increase, the piston rod 96 will be lifted, so that the conical rubber column 97 enters the inlet and outlet cavity 91. The conical rubber column 97 will push the rubber deceleration block 94 out of the round seat 92, so that the pushed out rubber deceleration block 94 will contact the pipeline, increasing the friction of the pipeline movement, slowing down the pipeline movement speed, and playing a role in automatically regulating the speed.

[0018] Therefore, the present invention can regulate the speed at which water enters the pipe, and the lighter the pipe, the slower the speed at which the push rod 8 moves, so its moving speed will be reduced. Although the heavier the pipe, the faster the push rod 8 moves, the rubber deceleration block 94 will quickly apply a moving friction force to it, so it can also quickly slow down.

[0019] Specifically, the top of the round seat 92 is a top cover 99, which is rotatably installed in the shell 9. The bottom of the shell 9 and the bottom of the round seat 92 are both connected to the inlet and outlet chamber 91. The rubber deceleration block 94 is provided with an arc surface 98 on the side close to the inlet and outlet chamber 91. Slide grooves 10 are provided on both sides of the chamber 93. The rubber deceleration block 94 is fixed with a slider 11, and the slider 11 is slidably installed in the slide groove 10. A spring 12 is fixed between the slider 11 and the slide groove 10. The water bucket 6 is provided with a water filling port 62. A conduit 13 is fixed and connected between the water bucket 6 and a plurality of cylinder bodies 95.

[0020] During operation, water is first filled into the water bucket 6 through the water filling port 62. When the water in the water bucket 6 is squeezed, it will be transported to each cylinder body 95 through the conduit 13, so that the piston rod 96 is pushed. The piston rod 96 will push the conical rubber column 97 through the shell 9 and the bottom of the round seat 92 into the inlet and outlet cavity 91. The top of the conical rubber column 97 will be inserted between the two arc surfaces 98. Then, as the conical rubber column 97 continues to enter, the rubber deceleration block 94 is pushed out of the round seat 92. At this time, the rubber deceleration block 94 will drive the slider 11 to move in the slide groove 10, so that the spring 12 is stretched. When the operation is completed, the spring 12 will rebound and shrink, so as to drive the slider 11 to move, so that the rubber deceleration block 94 is reset.

[0021] In addition, in this embodiment, a movable seat 100 is fixed to the bottom of the arc-shaped resisting seat 3, and the movable seat 100 is located in the movable channel 4. A support arm 7 is fixed between the push rod 8 and the movable seat 100, and a slot 300 is opened on the top of the support arm 7. A rubber plug 200 inserted into the slot 300 is fixed to the bottom of the movable seat 100, and a landing frame 5 is fixed to the end of the path of the laying frame, and the landing frame 5 is located below the movable channel 4.

[0022] When the pipeline pushes the arc-shaped resisting seat 3, the movable seat 100 will move in the movable channel 4, so that the push rod 8 is pushed to move through the support arm 7, and as the push rod 8 is completely moved into the water bucket 6, the push rod 8 will no longer move, and the arc-shaped resisting seat 3 will no longer move, thereby forming a barrier to the movement of the pipeline. However, with the strong power of the subsequent pipeline entering, the arc-shaped resisting seat 3 will be pushed to collide, so that the rubber plug 200 passes through the slot 300 and comes out, so that the arc-shaped resisting seat 3 continues to move. When the arc-shaped resisting seat 3 moves to the end of the path of the laying frame of the movable channel 4, the arc-shaped resisting seat 3 will fall into the receiving frame 5. At this time, the push rod 8 no longer pushes the piston 61 to squeeze the water in the water bucket 6, and the water squeezed into the cylinder body 95 will continue to flow into the water bucket 6 again due to the downward gravity of the piston rod 96.

[0023] Because the pipeline is connected on the laying ship during laying, this arrangement ensures that the speed of the end of the pipeline can be controlled at the moment of first contact with the water surface, and no large impact force will occur. If the speed of the pipeline is still controlled as at the beginning when it continues to enter, the laying efficiency will be reduced. Therefore, after the arc-shaped retaining seat 3 falls into the receiving frame 5, the pipeline movement speed increases.

[0024] The present invention provides a laying frame, and when the pipeline moves, the arc-shaped resisting seat is pushed to be squeezed into the water bucket, so the moving speed of the pipeline can be reduced. If the pipeline is heavy, the water in the water bucket will quickly enter the cylinder body, so that the rubber deceleration block contacts the pipeline, and the friction of the pipeline movement is increased, thereby controlling the speed of the pipeline entering the water surface for the first time, ensuring the safety of the pipeline. When the pipeline is subsequently laid, the speed limit on the pipeline disappears automatically, thereby improving the laying efficiency.

[0025] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An underwater pipeline laying device, characterized in that: The invention comprises a laying frame composed of two L-shaped frames (1), wherein an arc-shaped channel (2) and a movable channel (4) are formed between the two L-shaped frames (1), an arc-shaped blocking seat (3) is arranged in the movable channel (4), a water bucket (6) is fixed at the bottom of the laying frame, a piston (61) is arranged in the water bucket (6), and a push rod (8) is connected between the piston (61) and the arc-shaped blocking seat (3); The L-shaped frame (1) is provided with a side cavity (14), and a plurality of shells (9) are fixed to the L-shaped frame (1). A round seat (92) passing through the side cavity (14) is rotatably mounted in the shell (9), and a chamber (93) located in the round seat (92) is provided through the round seat (92). The middle of the chamber (93) is an inlet and outlet cavity (91), and both sides of the inlet and outlet cavity (91) are provided with rubber deceleration blocks (94) slidably mounted in the chamber (93). A cylinder body (95) connected to the water bucket (6) is fixed at the bottom of the shell (9), and a piston rod (96) is provided in the cylinder body (95). A conical rubber column (97) is provided at the top of the piston rod (96), and the conical rubber column (97) can be moved into the inlet and outlet cavity (91).

2. The underwater pipeline laying device according to claim 1, characterized in that: The top of the round seat (92) is a top cover (99), which is rotatably mounted in the housing (9), the bottom of the housing (9) and the bottom of the round seat (92) are both connected to the inlet and outlet cavity (91), and the rubber speed reduction block (94) is provided with an arc surface (98) on one side close to the inlet and outlet cavity (91).

3. The underwater pipeline laying device according to claim 2, characterized in that: Slide grooves (10) are provided on both sides of the chamber (93); a slider (11) is fixed to the rubber deceleration block (94); the slider (11) is slidably mounted in the slide groove (10); and a spring (12) is fixed between the slider (11) and the slide groove (10).

4. The underwater pipeline laying device according to claim 1, characterized in that: The water bucket (6) is provided with a water injection port (62), and a conduit (13) is fixed and connected between the water bucket (6) and the plurality of cylinder bodies (95).

5. The underwater pipeline laying device according to claim 1, characterized in that: A movable seat (100) is fixed at the bottom of the arc-shaped resisting seat (3), the movable seat (100) is located in the movable channel (4), a support arm (7) is fixed between the push rod (8) and the movable seat (100), a slot (300) is provided at the top of the support arm (7), and a rubber plug (200) inserted into the slot (300) is fixed at the bottom of the movable seat (100).

6. The underwater pipeline laying device according to claim 5, characterized in that: A landing frame (5) is fixed at the end of the path of the laying frame, and the landing frame (5) is located below the moving channel (4).

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