Corrosion-resistant reinforced flexible bellows

Abstract

The utility model relates to the technical field of bellows, concretely to a kind of corrosion-resistant reinforced soft bellows, including outer tube, the both ends of outer tube are fixedly connected with first connecting barrel, inner tube is provided in outer tube, the both ends of inner tube are fixedly connected with second connecting barrel, multiple support rods are fixedly connected between first connecting barrel and second connecting barrel;Reinforcing ring, multiple reinforcing rings are arranged between inner tube and outer tube, folding rod is rotatably connected between multiple reinforcing rings;Connecting frame, the connecting frame is arranged outside first connecting barrel and second connecting barrel, this corrosion-resistant reinforced soft bellows, anticorrosive gas is filled between outer tube and inner tube, anticorrosive gas can effectively separate outer tube and inner tube, avoid the physical change of the material of close contact due to the difference of thermal expansion coefficient, different hygroscopicity etc., stratification, foaming and deformation phenomenon appear, while anticorrosive gas itself can enhance anticorrosive effect, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe technology, specifically to a corrosion-resistant reinforced flexible corrugated pipe. Background Technology

[0002] Corrugated pipes are often used to transport fluids or work in complex environments. If they are not corrosion-resistant, they are easily corroded by water vapor, oxygen, chemicals, etc., which can lead to rust and corrosion damage, resulting in reduced strength, sealing failure, leakage, structural damage and other problems, affecting their function and safety and shortening their service life.

[0003] In existing corrugated pipe corrosion protection technology, the use of multi-layer anti-corrosion materials is a common practice. However, this approach has many problems. Because multi-layer materials are not easy to replace, their anti-corrosion performance will be greatly reduced as the service time increases. Moreover, different materials have different coefficients of thermal expansion. When the temperature changes, the expansion and contraction of each layer are different, which can easily generate stress concentration. Different hygroscopic properties will cause some materials to absorb water, resulting in volume changes. These factors interact and cause physical changes such as delamination, blistering, and deformation of the anti-corrosion layer, which seriously damages the integrity and continuity of the anti-corrosion layer, making it easier for external corrosive media to penetrate, thereby affecting the service life and safety of the corrugated pipe. To address this, we propose a corrosion-resistant reinforced flexible corrugated pipe. Utility Model Content

[0004] One of the technical problems this application aims to solve is that multi-layered materials are not easy to replace, and their anti-corrosion performance is greatly reduced after long-term use. Physical changes such as delamination, blistering, and deformation occur between materials due to differences in thermal expansion coefficients and hygroscopicity, which damage the integrity and continuity of the anti-corrosion layer.

[0005] To solve the above technical problems, this application provides a corrosion-resistant reinforced flexible corrugated pipe, including an outer tube, with a first connecting cylinder fixedly connected to both ends of the outer tube, an inner tube disposed inside the outer tube, and a second connecting cylinder fixedly connected to both ends of the inner tube, and a plurality of support rods fixedly connected between the first connecting cylinder and the second connecting cylinder.

[0006] A reinforcing ring, wherein multiple reinforcing rings are disposed between the inner tube and the outer tube, and a folding rod is rotatably connected between the multiple reinforcing rings;

[0007] A connecting frame is disposed outside the first connecting cylinder and the second connecting cylinder. Four connecting rings are fixedly connected inside the connecting frame. Each of the four connecting rings has an inflation groove and extends between the first connecting cylinder and the second connecting cylinder.

[0008] In some embodiments, sealing rings are fixedly connected to the outside of both the first connecting cylinder and the second connecting cylinder, and the connecting frame and the connecting ring are sealed to the first connecting cylinder and the second connecting cylinder through the sealing rings.

[0009] In some embodiments, an inflation pipe is fixedly connected to the outside of the connecting frame, and the inflation pipe communicates with the inside of the connecting frame for inputting anti-corrosion gas.

[0010] In some embodiments, the connecting frame is externally threaded with multiple bolts, and the connecting frame is fixedly connected to the first connecting cylinder by the bolts.

[0011] In some embodiments, the middle portion of the connecting frame is hollow, and the central axis of the connecting frame is coaxial with the central axes of the first connecting cylinder and the second connecting cylinder.

[0012] In some embodiments, a first support frame is fixedly connected to the outside of the first connecting cylinder, and slide rails are fixedly connected to both sides of the first support frame.

[0013] In some embodiments, a second support frame is slidably connected to the outside of the first support frame, a screw is threadedly connected to the bottom of the second support frame, the top end of the screw is rotatably connected to the bottom of the first support frame, and two support blocks are fixedly connected to the bottom of the second support frame.

[0014] This utility model has at least the following beneficial effects:

[0015] Injecting anti-corrosion gas between the outer and inner tubes effectively separates them, preventing physical changes such as delamination, blistering, and deformation caused by differences in thermal expansion coefficients and hygroscopicity between the closely contacting materials. At the same time, the anti-corrosion gas itself can enhance the anti-corrosion effect and extend the service life. Similarly, the setting of reinforcing rings and folding rods can further separate the outer and inner tubes and increase their strength. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the inner and outer tubes of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting frame structure of this utility model;

[0019] Figure 4 This utility model Figure 2 A schematic diagram of the decomposed structure;

[0020] Figure 5 This is a schematic diagram of the reinforcing ring and folding rod structure of this utility model.

[0021] In the diagram: 1. Outer tube; 2. First connecting cylinder; 3. Inner tube; 4. Second connecting cylinder; 5. Support rod; 6. Reinforcing ring; 61. Folding rod; 7. Connecting frame; 71. Connecting ring; 72. Inflation groove; 8. Sealing ring; 9. Inflation pipe; 10. Bolt; 11. First support frame; 12. Slide rail; 13. Second support frame; 14. Screw; 15. Support block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] A corrosion-resistant reinforced flexible corrugated pipe includes an outer pipe 1, with a first connecting cylinder 2 fixedly connected to both ends of the outer pipe 1. An inner pipe 3 is provided inside the outer pipe 1, with a second connecting cylinder 4 fixedly connected to both ends of the inner pipe 3. A plurality of support rods 5 are fixedly connected between the first connecting cylinder 2 and the second connecting cylinder 4. By setting the support rods 5, the first connecting cylinder 2 and the second connecting cylinder 4 can be supported, facilitating the insertion of the connecting ring 71. In addition, the first connecting cylinder 2 and the second connecting cylinder 4 are both made of stainless steel.

[0025] Reinforcing ring 6, multiple reinforcing rings 6 are set between inner tube 3 and outer tube 1, and multiple reinforcing rings 6 are rotatably connected to each other with folding rods 61. Multiple reinforcing rings 6 extend and retract synchronously with the extension and retraction of inner tube 3 and outer tube 1, and folding rods 61 fold synchronously.

[0026] The connecting frame 7 is located outside the first connecting cylinder 2 and the second connecting cylinder 4. Four connecting rings 71 are fixedly connected inside the connecting frame 7. Each of the four connecting rings 71 has an inflation groove 72. The four connecting rings 71 extend between the first connecting cylinder 2 and the second connecting cylinder 4. The anti-corrosion gas is filled into the space between the inner tube 3 and the outer tube 1 through the inflation groove 72 of the connecting ring 71.

[0027] Both the first connecting cylinder 2 and the second connecting cylinder 4 are fixedly connected to a sealing ring 8. The connecting frame 7 and the connecting ring 71 are sealed to the first connecting cylinder 2 and the second connecting cylinder 4 through the sealing ring 8. By setting the sealing ring 8, effective sealing can be achieved.

[0028] An inflation tube 9 is fixedly connected to the outside of the connecting frame 7. The inflation tube 9 connects to the inside of the connecting frame 7 and is used to input anti-corrosion gas. The amount of anti-corrosion gas should not be too much to avoid hindering the expansion and contraction of the inner tube 3 and the outer tube 1.

[0029] The connecting frame 7 is externally threaded with multiple bolts 10, and the connecting frame 7 is fixedly connected to the first connecting cylinder 2 by the bolts 10.

[0030] The middle part of the connecting frame 7 is hollow, and the central axis of the connecting frame 7 is coaxial with the central axis of the first connecting cylinder 2 and the second connecting cylinder 4 to avoid deviating from the center and reducing the sealing performance.

[0031] In use, the anti-corrosion gas is injected into the connecting frame 7 through the inflation pipe 9, and then the anti-corrosion gas is injected between the outer tube 1 and the inner tube 3 through the connecting ring 71 and the inflation groove 72. The anti-corrosion gas can effectively separate the outer tube 1 and the inner tube 3 and at the same time prevent corrosion. Meanwhile, the reinforcing ring 6 and the folding rod 61 set between the outer tube 1 and the inner tube 3 can extend and retract synchronously with the extension and retraction of the inner tube 3 and the outer tube 1, which can play a role in stabilizing and supporting the outer tube 1 and the inner tube 3, while enhancing the strength of the outer tube 1 and the inner tube 3. Example 2

[0032] Please see Figure 3 This utility model provides a technical solution:

[0033] Unlike Embodiment 1, a first support frame 11 is fixedly connected to the outside of the first connecting cylinder 2, and slide rails 12 are fixedly connected to both sides of the first support frame 11.

[0034] A second support frame 13 is slidably connected to the outside of the first support frame 11. A screw 14 is threadedly connected to the bottom of the second support frame 13. The top end of the screw 14 is rotatably connected to the bottom of the first support frame 11. Two support blocks 15 are fixedly connected to the bottom of the second support frame 13.

[0035] Rotating the screw 14 can drive the first support rod 5 to rise and fall within the second support rod 5 with the assistance of the slide rail 12. In this way, the height of both ends of the inner tube 3 and the outer tube 1 can be adjusted, thereby adjusting the overall height of the inner tube 3 and the outer tube 1, so that the connecting frame 7 can be connected to other existing pipes.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A corrosion-resistant reinforced flexible corrugated pipe, comprising an outer pipe (1), characterized in that: The outer tube (1) is fixedly connected to both ends of a first connecting cylinder (2), and an inner tube (3) is provided inside the outer tube (1). The inner tube (3) is fixedly connected to both ends of a second connecting cylinder (4), and multiple support rods (5) are fixedly connected between the first connecting cylinder (2) and the second connecting cylinder (4). Reinforcing ring (6), multiple reinforcing rings (6) are disposed between the inner tube (3) and the outer tube (1), and multiple reinforcing rings (6) are rotatably connected to each other by a folding rod (61). A connecting frame (7) is provided outside the first connecting cylinder (2) and the second connecting cylinder (4). Four connecting rings (71) are fixedly connected inside the connecting frame (7). Each of the four connecting rings (71) has an inflation groove (72) and each of the four connecting rings (71) extends between the first connecting cylinder (2) and the second connecting cylinder (4).

2. The corrosion-resistant reinforced flexible corrugated pipe according to claim 1, characterized in that: The first connecting cylinder (2) and the second connecting cylinder (4) are both fixedly connected with sealing rings (8), and the connecting frame (7) and the connecting ring (71) are sealed to the first connecting cylinder (2) and the second connecting cylinder (4) through the sealing rings (8).

3. The corrosion-resistant reinforced flexible corrugated pipe according to claim 1, characterized in that: An inflation tube (9) is fixedly connected to the outside of the connecting frame (7). The inflation tube (9) connects to the inside of the connecting frame (7) and is used to input anti-corrosion gas.

4. The corrosion-resistant reinforced flexible corrugated pipe according to claim 1, characterized in that: The connecting frame (7) is externally threaded with multiple bolts (10), and the connecting frame (7) is fixedly connected to the first connecting cylinder (2) by the bolts (10).

5. The corrosion-resistant reinforced flexible corrugated pipe according to claim 1, characterized in that: The middle part of the connecting frame (7) is hollow, and the central axis of the connecting frame (7) is coaxial with the central axis of the first connecting cylinder (2) and the second connecting cylinder (4).

6. The corrosion-resistant reinforced flexible corrugated pipe according to claim 1, characterized in that: The first connecting cylinder (2) is fixedly connected to a first support frame (11), and slide rails (12) are fixedly connected to both sides of the first support frame (11).

7. The corrosion-resistant reinforced flexible corrugated pipe according to claim 6, characterized in that: The first support frame (11) is slidably connected to the second support frame (13), and the bottom of the second support frame (13) is threadedly connected to the screw (14). The top end of the screw (14) is rotatably connected to the bottom of the first support frame (11), and the bottom of the second support frame (13) is fixedly connected to two support blocks (15).

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