Underwater high-strength compression-resistant pipe

Abstract

The underwater high-strength compression-resistant pipe comprises an inner pipe, an outer shell and an inner shell, the inner shell is arranged in the outer shell, an interlayer is formed between the inner shell and the outer shell, a buffer positioning mechanism is arranged in the interlayer, used for supporting the outer shell and connected with the inner shell, the inner pipe is arranged in the inner shell, and the buffer positioning mechanism is used for supporting the outer shell and connected with the inner shell. A connecting assembly is connected between the inner pipe and the inner shell. The utility model belongs to the technical field of underwater pipelines, and particularly relates to an underwater high-strength compression-resistant pipe which aims at improving the compression resistance of an underwater pipeline, improving the toughness of the pipeline, dispersing pressure borne by the outside in the pipeline and having a certain anti-seismic effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of underwater pipelines, in particular to a high-strength pressure-resistant pipe material for underwater use. Background Art

[0002] Underwater pipelines are pipelines laid underwater in rivers, lakes, and seas to transport liquids, gases, or loose solids. Most of them are buried in underwater soil layers and are subject to greater pressure. There are two types of high-strength pressure-resistant pipes: one is made of high-strength materials to increase its strength, and the other is to enhance the pressure resistance of the pipe by setting an internal structure.

[0003] Existing high-strength pipes that achieve pressure resistance through structures have poor toughness. The pipes are prone to rupture after elastic deformation under the corresponding pressure. At the same time, after being under pressure, the pressure cannot be dispersed inside the pipe, further increasing the risk of pipe damage and affecting the life of the pipe. Utility Model Content

[0004] The technical problem to be solved by the utility model is to improve the toughness of the pipeline, disperse the pressure borne by the outside inside the pipeline, and have a certain earthquake resistance effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a high-strength pressure-resistant pipe for underwater use, comprising an inner tube, an outer shell and an inner shell, the inner shell is arranged inside the outer shell, a partition is formed between the inner shell and the outer shell, a buffer positioning mechanism is provided in the partition, which is used to support the outer shell and be connected to the inner shell, the inner tube is arranged inside the inner shell, and a connecting component is connected between the inner tube and the inner shell.

[0006] Furthermore, the connecting assembly includes a support plate and a support ring, the support ring is sleeved on the outer wall of the inner tube, the support rings are evenly spaced along the length direction of the inner tube, one end of the support plate is fixedly connected to the outer wall of the support ring, and the other end of the support plate passes through the inner shell and is fixedly connected to the inner wall of the outer shell.

[0007] Preferably, the width of the support sheet connected to the support ring is greater than the width of the support sheet connected to the inner wall of the outer shell.

[0008] Furthermore, the buffer positioning mechanism comprises a positioning block and a buffer rubber strip, the positioning block is arranged inside the partition, an insertion hole is opened on the end surface of the positioning block, and the buffer rubber strip is fixedly connected in the insertion hole.

[0009] Furthermore, the positioning blocks are fixedly connected to the corners between the inner shell and the outer shell, and the positioning blocks are symmetrically arranged in pairs.

[0010] Preferably, a foam filling layer is provided inside the partition layer. The foam filling layer is located between the symmetric positioning blocks, and the foam filling layer is a foaming filling layer of polyurethane foam.

[0011] Preferably, the positioning blocks extend from one end of the inner tube to the other end, and the jacks are linearly distributed along the length direction of the positioning blocks.

[0012] After adopting the above structure, the beneficial effects of the present utility model are as follows: Aiming at improving the compressive capacity of the underwater pipeline, the inner shell and the outer shell are supported by the buffer positioning mechanism inside the partition layer, and the elasticity between the outer shell and the inner shell is increased by filling foaming materials inside the partition layer, adding multiple layers of protection to the outside of the inner tube. At the same time, the connecting component is used to disperse the pressure, and the pressure of the inner and outer shells is transmitted to the connecting ring through the supporting piece, and finally transmitted to the inner tube through the connecting ring, gradually reducing the pressure on the inner tube layer by layer, realizing the flexible support for the outside of the inner tube, and improving the overall compressive effect of the pipeline. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0014] Figure 1 It is a schematic diagram of the overall structure of the high-strength compressive pipeline for underwater use proposed by the present utility model;

[0015] Figure 2 It is a half-sectional view of the high-strength compressive pipeline for underwater use proposed by the present utility model;

[0016] Figure 3 It is a schematic diagram of the end face structure of the high-strength compressive pipeline for underwater use proposed by the present utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the top view of the high-strength compressive pipeline for underwater use proposed by the present utility model;

[0018] Figure 5 It is Figure 2 an enlarged view of part A of

[0019] In the drawings: 1, inner tube; 2, outer shell; 3, inner shell; 4, partition layer; 5, buffer positioning mechanism; 6, connecting component; 7, supporting piece; 8, supporting ring; 9, positioning block; 10, buffer rubber strip; 11, jack; 12, foam filling layer. Detailed Embodiments

[0020] As Figures 1 - 5As shown, a high-strength anti-compression pipe for underwater use includes an inner pipe 1, an outer shell 2, and an inner shell 3. The inner shell 3 is disposed inside the outer shell 2. A partition layer 4 is formed between the inner shell 3 and the outer shell 2. A buffer positioning mechanism 5 is provided in the partition layer 4 for supporting the outer shell 2 and connecting to the inner shell 3. The inner pipe 1 is disposed inside the inner shell 3. A connecting component 6 is connected between the inner pipe 1 and the inner shell 3. The connecting component 6 is used to connect the inner pipe 1 and at the same time reduce and transfer the pressure borne by the inner shell 3 and the outer shell 2 to the inner pipe 1.

[0021] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, in order to improve the ductility of the pipe and increase the anti-compression ability of the pipe, the buffer positioning mechanism 5 includes positioning blocks 9 and buffer rubber strips 10. The positioning blocks 9 are disposed inside the partition layer 4. A jack 11 is opened on the end face of the positioning block 9. The buffer rubber strips 10 are fixedly connected inside the jack 11. The positioning blocks 9 are fixedly connected to the corners between the inner shell 3 and the outer shell 2. The positioning blocks 9 are arranged in pairs symmetrically. A foam filling layer 12 is provided in the partition layer 4. The foam filling layer 12 is located between the symmetric positioning blocks 9. The foam filling layer 12 is a foaming filling layer of polyurethane foam. The positioning blocks 9 connect the inner shell 3 and the outer shell 2 inside the partition layer 4. The partition layer 4 is used to increase the elastic deformation of the inner shell 3 and the outer shell 2. At the same time, the elastic support force of the inner shell 3 and the outer shell 2 is increased by the foaming material filled inside the partition layer 4, increasing the ductility of the pipe and improving the anti-compression ability. The buffer rubber strips 10 inside the positioning blocks 9 slow down the vibration transmission of the outer shell 2, and cooperate with the connecting component 6 to achieve the pressure dispersion of the pipe from the outside to the inside.

[0022] As Figures 2 - 4 shown, in order to achieve the pressure dispersion of the inner pipe 1 and at the same time support the inner pipe 1 to increase the support effect inside the pipe, the connecting component 6 includes support pieces 7 and support rings 8. The support rings 8 are sleeved on the outer side wall of the inner pipe 1. The support rings 8 are arranged at equal intervals along the length direction of the inner pipe 1. One end of the support piece 7 is fixedly connected to the outer side wall of the support ring 8. The other end of the support piece 7 penetrates through the inner shell 3 and is fixedly connected to the inner side wall of the outer shell 2. The width of the support piece 7 connected to one side of the support ring 8 is greater than the width connected to the inner wall of the outer shell 2. The end of the support piece 7 away from the inner pipe 1 contacts the inner shell 3 and the outer shell 2 respectively, increasing the connectivity of the support piece 7. The inner pipe 1 is supported and fixed by connecting through the support rings 8. When the outer shell 2 is pressed, it is transmitted to the support rings 8 through the support pieces 7. The support pieces 7 further disperse the pressure, and finally it is transmitted to the inner pipe 1 through the support rings 8, reducing the pressure on the inner pipe 1.

[0023] The positioning blocks 9 extend from one end of the inner pipe 1 to the other end, and the jacks are linearly distributed along the length direction of the positioning blocks 9.

[0024] During specific use, after the pipeline is connected underwater, the outside of the pipeline bears pressure and is affected by buoyancy, resulting in a relatively large overall pressure on the pipeline. The interlayer 4 is utilized to increase the elastic deformation of the inner shell 3 and the outer shell 2, and the elastic support force between the inner shell 3 and the outer shell 2 is increased by the foaming material filled inside the interlayer 4, so as to enhance the overall toughness of the outside of the pipeline and improve the compressive capacity. Meanwhile, the buffer rubber strip 10 inside the positioning block 9 slows down the vibration transmission of the outer shell 2. The pressure between the outer shell 2 and the inner shell 3 is transmitted to the support ring 8 through the support piece 7. While the support piece 7 supports the inner pipe 1, it further disperses the pressure transmitted to the inner pipe 1, and finally transmits it to the inner pipe 1 through the support ring 8, reducing the pressure on the inner pipe 1 and improving the overall compressive effect of the pipeline.

[0025] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. High-strength pressure-resistant pipe for underwater use, characterized by: It comprises an inner tube, an outer shell and an inner shell, wherein the inner shell is arranged inside the outer shell, a partition is formed between the inner shell and the outer shell, a buffer positioning mechanism is arranged inside the partition, which is used to support the outer shell and connect with the inner shell, the inner tube is arranged inside the inner shell, and a connecting assembly is connected between the inner tube and the inner shell; The connecting assembly includes a support sheet and a support ring, wherein the support ring is sleeved on the outer side wall of the inner tube, and the support rings are arranged evenly spaced along the length direction of the inner tube, one end of the support sheet is fixedly connected to the outer side wall of the support ring, and the other end of the support sheet passes through the inner shell and is fixedly connected to the inner side wall of the outer shell; The buffer positioning mechanism comprises a positioning block and a buffer rubber strip, wherein the positioning block is arranged inside the partition layer, an insertion hole is opened on the end surface of the positioning block, and the buffer rubber strip is fixedly connected in the insertion hole.

2. The underwater high-strength pressure-resistant pipe according to claim 1, characterized in that: The width of the support sheet connected to one side of the support ring is greater than the width of the support sheet connected to the inner wall of the outer shell.

3. The underwater high-strength pressure-resistant pipe according to claim 1, characterized in that: The positioning blocks are fixedly connected to the corners between the inner shell and the outer shell, and the positioning blocks are symmetrically arranged in pairs.

4. The underwater high-strength pressure-resistant pipe according to claim 1, characterized in that: A foam filling layer is arranged in the partition layer, and the foam filling layer is located between the symmetrical positioning blocks. The foam filling layer is a foaming filling layer of polyurethane foam.

5. The underwater high-strength pressure-resistant pipe according to claim 1, characterized in that: The positioning block extends from one end of the inner tube to the other end, and the insertion holes are distributed in a straight line along the length direction of the positioning block.

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