Corrosion-resistant corrugated pipe

Abstract

The utility model discloses a corrosion-resistant corrugated pipe, and belongs to the technical field of corrugated pipes. The corrosion-resistant corrugated pipe comprises a corrugated pipe body, an outer layer is arranged on the surface of the corrugated pipe body, a first fireproof layer is arranged on the inner surface of the outer layer, a first anti-expansion layer is arranged on the inner surface of the first fireproof layer, and a waterproof layer is arranged on the inner surface of the first anti-expansion layer. According to the corrosion-resistant corrugated pipe, when the corrugated pipe body is used for wiring of a cable, due to the fact that the smooth surface is arranged on the inner surface of the inner layer, threading of the cable is facilitated, and when the cable is short-circuited or a fire occurs beside the outside corrugated pipe body, the first fireproof layer and the second fireproof layer are both made of aerogel solid materials, and therefore the cable can be prevented from being damaged. The aerogel is stable in chemical performance, resistant to high temperature, wide in use temperature range and long in service life, the corrugated pipe body can be effectively prevented from being damaged by external high temperature, and then the cable in the corrugated pipe body is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows, and more specifically to a corrosion-resistant bellows. Background Art

[0002] The bellows is a special shape of pipe with a wavy cross section. This unique design makes it have good elasticity and flexibility. The bellows can withstand large pressure without permanent deformation. It has high sensitivity and can accurately convert pressure into displacement or force.

[0003] Some of the existing corrugated tubes are used for laying cables due to their own characteristics, but cables are usually laid on the ground, underground and underwater. In order to further protect the cables, corrugated tubes are needed for protection. Although some of the existing corrugated tubes have good elasticity and scalability and can withstand greater pressure without permanent deformation, the pressure resistance and water seepage resistance of the corrugated tubes in water are not advantageous. When water enters the corrugated tube, the cable will be damaged. Moreover, when the corrugated tube is outside, if the cable inside the corrugated tube is short-circuited or a fire occurs next to the corrugated tube, high-temperature flames will be generated inside or next to the corrugated tube, and the high temperature may cause damage to the corrugated tube. Utility Model Content

[0004] The purpose of the utility model is to provide a corrosion-resistant bellows to solve the problems raised in the above background technology:

[0005] However, the bellows does not have an advantage in terms of pressure resistance and water seepage resistance in water. When water enters the bellows, the cable will be damaged. Moreover, when the bellows is outside, if the cable inside the bellows is short-circuited or a fire occurs next to the bellows, high-temperature flames will be generated inside the bellows, and the high temperature may cause damage to the bellows.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A corrosion-resistant corrugated pipe comprises a corrugated pipe body, wherein an outer layer is arranged on the surface of the corrugated pipe body, a first fireproof layer is arranged on the inner surface of the outer layer, a first anti-expansion layer is arranged on the inner surface of the first fireproof layer, a waterproof layer is arranged on the inner surface of the first anti-expansion layer, a second anti-expansion layer is arranged on the inner surface of the waterproof layer, a second fireproof layer is arranged on the inner surface of the second anti-expansion layer, an insulating layer is arranged on the inner surface of the second fireproof layer, an inner layer is arranged on the inner surface of the insulating layer, and both the first fireproof layer and the second fireproof layer are made of aerogel solid material.

[0008] By adopting the above technical scheme, when the corrugated tube body is used for routing cables, since the inner surface of the inner layer is provided with a smooth surface, it is convenient for the cable to be threaded. When a short circuit occurs in the cable or a fire occurs near the external corrugated tube body, the first fireproof layer and the second fireproof layer are both made of aerogel solid material. The chemical properties of aerogel are stable, high temperature resistant, with a wide operating temperature range and a long service life. It can effectively prevent external high temperature from damaging the corrugated tube body, thereby protecting the cables inside the corrugated tube body. When the corrugated tube body is subjected to high temperature, the interior thereof produces slight deformation due to temperature changes. The first anti-expansion layer and the second anti-expansion layer can prevent slight deformation inside the corrugated tube body. When the corrugated tube body is laid underground or underwater, the waterproof layer can effectively prevent water from seeping into the interior of the corrugated tube body, keep the interior of the corrugated tube body dry, thereby protecting the cables.

[0009] Preferably, a steel wire is arranged inside the outer layer, and a plurality of circular holes are opened inside the outer layer.

[0010] By adopting the above technical solution, the circular hole can further insulate the bellows body.

[0011] Preferably, a plurality of inner grooves and outer grooves are respectively provided on the inner and outer surfaces of the first fireproof layer and the second fireproof layer, and the inner grooves and outer grooves are arranged alternately.

[0012] By adopting the above technical solution, the inner grooves and the outer grooves are staggered, which not only maintains the fireproof effect of the first fireproof layer and the second fireproof layer, but also reduces the use of materials, making the corrugated pipe body lighter and convenient for installation and long-distance transportation.

[0013] Preferably, the inner surface of the inner layer is provided with a smooth surface, and the inner layer and the insulating layer are bonded together by gluing.

[0014] By adopting the above technical solution and the smooth surface design, it is convenient to thread the cables.

[0015] Preferably, both the outer layer and the inner layer are made of polytetrafluoroethylene material.

[0016] By adopting the above technical solution, the bellows body is suitable for harsh environments.

[0017] Preferably, the first anti-swelling layer and the second anti-swelling layer are both made of anti-swelling hydrogel material.

[0018] By adopting the above technical solution, the first anti-expansion layer and the second anti-expansion layer can prevent slight deformation from occurring inside the corrugated pipe body.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1) When the corrosion-resistant corrugated tube is in use, when the corrugated tube body is used for routing cables, since the inner surface of the inner layer is provided with a smooth surface, it is convenient for the cable to be threaded. When a short circuit occurs in the cable or a fire occurs near the external corrugated tube body, the first fireproof layer and the second fireproof layer are both made of aerogel solid material. Aerogel has stable chemical properties, high temperature resistance, a wide operating temperature range, and a long service life. It can effectively prevent external high temperature from damaging the corrugated tube body, thereby protecting the cable inside the corrugated tube body.

[0021] 2) When the corrosion-resistant corrugated pipe is in use, when the corrugated pipe body is subjected to high temperature, the interior will produce slight deformation due to temperature change. The first anti-expansion layer and the second anti-expansion layer can prevent slight deformation inside the corrugated pipe body. When the corrugated pipe body is laid underground or underwater, the waterproof layer can effectively prevent water from penetrating into the interior of the corrugated pipe body, keep the interior of the corrugated pipe body dry, and thus protect the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the steel wire structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the circular hole structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the inner groove structure of the utility model.

[0027] Explanation of the numbers in the figure: 1. Bellows body; 2. Outer layer; 3. First fireproof layer; 4. First anti-expansion layer; 5. Waterproof layer; 6. Second anti-expansion layer; 7. Second fireproof layer; 8. Insulation layer; 9. Inner layer; 10. Inner groove; 11. Outer groove; 12. Round hole; 13. Steel wire. DETAILED DESCRIPTION Example

[0028] However, the pressure resistance and water seepage resistance of the bellows in water are not advantageous. When water enters the bellows, the cable will be damaged. Moreover, when the bellows is outside, if the cable inside the bellows is short-circuited or a fire occurs next to the bellows, a high-temperature flame will be generated inside the bellows. The high temperature may cause damage to the bellows. The following solution can be used to solve the problem.

[0029] See also Figures 1 to 5A corrosion-resistant corrugated pipe comprises a corrugated pipe body 1, an outer layer 2 is arranged on the surface of the corrugated pipe body 1, the outer layer 2 is made of polytetrafluoroethylene material, a first fireproof layer 3 is arranged on the inner surface of the outer layer 2, a first anti-expansion layer 4 is arranged on the inner surface of the first anti-expansion layer 3, a waterproof layer 5 is arranged on the inner surface of the first anti-expansion layer 4, a second anti-expansion layer 6 is arranged on the inner surface of the waterproof layer 5, a second fireproof layer 7 is arranged on the inner surface of the second anti-expansion layer 6, an insulating layer 8 is arranged on the inner surface of the second fireproof layer 7, an inner layer 9 is arranged on the inner surface of the insulating layer 8, the first fireproof layer 3 and the second fireproof layer 7 are both made of aerogel solid material, when the corrugated pipe body 1 is used for the routing of cables, since the inner surface of the inner layer 9 is provided with a smooth surface, it is convenient for the threading of the cables, When a short circuit occurs in the cable or a fire occurs near the external corrugated tube body 1, the first fireproof layer 3 and the second fireproof layer 7 are both made of aerogel solid material. The chemical properties of aerogel are stable, high temperature resistant, have a wide operating temperature range, and a long service life. It can effectively prevent external high temperature from damaging the corrugated tube body 1, thereby protecting the cable inside the corrugated tube body 1. When the corrugated tube body 1 is subjected to high temperature, the interior produces slight deformation due to temperature changes. The first anti-expansion layer 4 and the second anti-expansion layer 6 can prevent slight deformation inside the corrugated tube body 1. When the corrugated tube body 1 is laid underground or underwater, the waterproof layer 5 can effectively prevent water from seeping into the inside of the corrugated tube body 1, keep the inside of the corrugated tube body 1 dry, and thereby protect the cable.

[0030] A steel wire 13 is arranged inside the outer layer 2 , and a plurality of circular holes 12 are opened inside the outer layer 2 . The circular holes 12 can further insulate the corrugated pipe body 1 .

[0031] A plurality of inner grooves 10 and outer grooves 11 are respectively provided on the inner and outer surfaces of the first fireproof layer 3 and the second fireproof layer 7. The inner grooves 10 and the outer grooves 11 are staggered, which not only maintains the fireproof effect of the first fireproof layer 3 and the second fireproof layer 7, but also reduces the use of materials, making the corrugated pipe body 1 lighter and convenient for installation and long-distance transportation.

[0032] The inner surface of the inner layer 9 is provided with a smooth surface, and the inner layer 9 and the insulating layer 8 are bonded together by gluing, and the design of the smooth surface facilitates the threading of the cable.

[0033] The outer layer 2 and the inner layer 9 are both made of polytetrafluoroethylene material, and the bellows body 1 is suitable for harsh environments.

[0034] The first anti-expansion layer 4 and the second anti-expansion layer 6 are both made of anti-expansion hydrogel material. The first anti-expansion layer 4 and the second anti-expansion layer 6 can prevent minute deformation from occurring inside the corrugated pipe body 1 .

[0035] The utility model uses the following steps: when the corrosion-resistant corrugated pipe is in use, when the corrugated pipe body 1 is used for routing cables, since the inner surface of the inner layer 9 is provided with a smooth surface, it is convenient for threading the cables. When a short circuit occurs in the cables or a fire occurs near the external corrugated pipe body 1, the first fireproof layer 3 and the second fireproof layer 7 are both made of aerogel solid material. The aerogel has stable chemical properties, is resistant to high temperatures, has a wide operating temperature range, and has a long service life. It can effectively prevent external high temperatures from damaging the corrugated pipe body 1, thereby protecting the cables inside the corrugated pipe body 1. When the corrugated pipe body 1 is subjected to high temperatures, the interior thereof undergoes slight deformation due to temperature changes. The first anti-expansion layer 4 and the second anti-expansion layer 6 can prevent slight deformation inside the corrugated pipe body 1. When the corrugated pipe body 1 is laid underground or underwater, the waterproof layer 5 can effectively prevent water from seeping into the interior of the corrugated pipe body 1, thereby keeping the interior of the corrugated pipe body 1 dry, thereby protecting the cables.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant bellows, comprising a bellows body (1), characterized in that: The surface of the bellows body (1) is provided with an outer layer (2), the inner surface of the outer layer (2) is provided with a first fireproof layer (3), the inner surface of the first fireproof layer (3) is provided with a first anti-expansion layer (4), the inner surface of the first anti-expansion layer (4) is provided with a waterproof layer (5), the inner surface of the waterproof layer (5) is provided with a second anti-expansion layer (6), the inner surface of the second anti-expansion layer (6) is provided with a second fireproof layer (7), the inner surface of the second fireproof layer (7) is provided with an insulating layer (8), the inner surface of the insulating layer (8) is provided with an inner layer (9), and the first fireproof layer (3) and the second fireproof layer (7) are both made of aerogel solid material.

2. The corrosion-resistant bellows according to claim 1, characterized in that: A steel wire (13) is arranged inside the outer layer (2), and a plurality of circular holes (12) are opened inside the outer layer (2).

3. The corrosion-resistant bellows according to claim 1, characterized in that: A plurality of inner grooves (10) and outer grooves (11) are respectively provided on the inner and outer surfaces of the first fireproof layer (3) and the second fireproof layer (7), and the inner grooves (10) and outer grooves (11) are arranged in a staggered manner.

4. The corrosion-resistant bellows according to claim 1, characterized in that: The inner surface of the inner layer (9) is provided with a smooth surface, and the inner layer (9) and the insulating layer (8) are bonded together by gluing.

5. The corrosion-resistant bellows according to claim 1, characterized in that: The outer layer (2) and the inner layer (9) are both made of polytetrafluoroethylene material.

6. The corrosion-resistant bellows according to claim 1, characterized in that: The first anti-swelling layer (4) and the second anti-swelling layer (6) are both made of anti-swelling hydrogel material.

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