Search

CN-224229460-U - Double-layer corrugated pipe

CN224229460UCN 224229460 UCN224229460 UCN 224229460UCN-224229460-U

Abstract

The utility model relates to the technical field of green databases, in particular to a double-layer corrugated pipe, which comprises an end flange, wherein a plurality of flange holes penetrating through the inside of the end flange are formed in the surface of the end flange, the plurality of flange holes are distributed in an annular equidistant manner along the surface of the end flange, an outer-layer corrugated pipe and an inner-layer corrugated pipe are respectively arranged between the end flanges distributed along two sides, the outer-layer corrugated pipe surrounds the outside of the inner-layer corrugated pipe, and an annular groove I and an annular groove II are respectively formed in the surface of the end flange. According to the utility model, by adopting the double-layer design of the outer corrugated pipe and the inner corrugated pipe and combining the annular groove of the end flange and the sealing ring structure, double protection is formed, the outer corrugated pipe is fixed through the first annular groove, the inner corrugated pipe is fixed through the second annular groove, the outer corrugated pipe and the inner corrugated pipe are further reinforced through welding or gluing, the sealing ring is made of a water-swelling rubber material, and the sealing ring swells to enhance the sealing performance when contacting liquid, so that high-pressure fluid leakage is effectively prevented.

Inventors

  • WU CHUNLIN
  • WU ZHIQIANG

Assignees

  • 无锡全氟新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20250626

Claims (9)

  1. 1. The double-layer corrugated pipe is characterized by comprising an end flange (1), wherein a plurality of flange holes (11) penetrating through the inside of the end flange are formed in the surface of the end flange (1), the plurality of flange holes (11) are distributed in an annular equidistant manner along the surface of the end flange (1), an outer corrugated pipe (13) and an inner corrugated pipe (15) are respectively arranged between the end flanges (1) distributed along two sides, and the outer corrugated pipe (13) surrounds the outside of the inner corrugated pipe (15); the surface of the end flange (1) is provided with a first annular groove (12) and a second annular groove (14) respectively, the end part of the outer corrugated pipe (13) is inserted into the first annular groove (12), and the end part of the inner corrugated pipe (15) is inserted into the second annular groove (14); The inner wall of the annular groove I (12) is further provided with a seal groove I (17), the interior of the seal groove I (17) is filled with a seal ring I (16), the inner ring wall of the seal ring I (16) is abutted against and tightly attached to the outer ring wall of the outer corrugated pipe (13), the inner wall of the annular groove II (14) is provided with a seal groove II (18), the interior of the seal groove II (18) is filled with a seal ring II (19), the inner ring wall of the seal ring II (19) is abutted against and tightly attached to the outer ring wall of the inner corrugated pipe (15), the seal groove I (17) and the seal groove II (18) are of annular structures, and the seal ring I (16) and the seal ring II (19) are made of water-swelling rubber materials.
  2. 2. A double-layer corrugated pipe according to claim 1, wherein a channel (1001) is arranged at the center of the end flange (1), the channel (1001) is in a conical structure, and the wide-mouth position of the channel (1001) is matched with the inner wall surface of the inner-layer corrugated pipe (15).
  3. 3. The double-layer corrugated pipe according to claim 1, wherein the outer-layer corrugated pipe (13) comprises a base layer (1301), an impact-resistant layer (1302), a waterproof layer (1303) and a corrosion-resistant layer (1304), the impact-resistant layer (1302) is wrapped on the surface of the base layer (1301), the waterproof layer (1303) is wrapped on the surface of the impact-resistant layer (1302), and the corrosion-resistant layer (1304) is covered on the surface of the waterproof layer (1303).
  4. 4. A double-layer corrugated pipe according to claim 3, wherein the base layer (1301) is made of stainless steel material, and the inner and outer portions of the base layer (1301) are each provided with a corrugated structure.
  5. 5. A double layer bellows according to claim 3, wherein the impact resistant layer (1302) is made of a modified polyurethane material and has a thickness of 0.5-1.2mm.
  6. 6. The double-layer corrugated pipe of claim 3, wherein the waterproof layer (1303) is made of polyvinyl chloride film material, and a plurality of protruding points are distributed on the inner surface and the outer surface of the waterproof layer (1303).
  7. 7. A double-layer corrugated pipe according to claim 3, wherein the corrosion-resistant layer (1304) is made of an epoxy resin material, and the thickness of the corrosion-resistant layer (1304) is 0.2-0.5mm.
  8. 8. A double-layer corrugated pipe according to claim 1, wherein a sandwich pipe (2) is filled between the outer-layer corrugated pipe (13) and the inner-layer corrugated pipe (15), the sandwich pipe (2) is of a hollow structure, an insulating layer (21) is filled in the sandwich pipe (2), the sandwich pipe (2) is made of a plastic material, and the insulating layer (21) is made of a sponge material.
  9. 9. The double-layer corrugated pipe according to claim 1, wherein a plurality of connecting blocks (3) are fixedly distributed on the surface of the end flange (1), and reinforcing rods (31) are assembled between the two connecting blocks (3) distributed on the same horizontal line.

Description

Double-layer corrugated pipe Technical Field The utility model relates to the technical field of green databases, in particular to a double-layer corrugated pipe. Background Corrugated pipes are widely used in various industrial and civil fields as a common pipeline structure, however, if the corrugated pipe is not provided with a double-layer structure, is not provided with an interlayer in the middle or is not provided with an external protective layer, some disadvantages may exist, and the performance and the service life of the corrugated pipe are affected. Firstly, the mechanical strength and the pressure resistance of the corrugated pipe can be reduced by not arranging a double-layer structure, when the single-layer corrugated pipe bears high pressure or external impact, the single-layer corrugated pipe is easy to deform or crack, so that fluid leakage or equipment damage is caused, in addition, the corrosion resistance of the single-layer corrugated pipe is relatively poor, the single-layer corrugated pipe is easy to be corroded by chemical substances, and the service life is shortened. And secondly, the rigidity and the compression resistance of the corrugated pipe can be reduced without arranging an interlayer in the middle of the corrugated pipe, the interlayer material can effectively disperse and absorb external pressure, the overall structural strength of the corrugated pipe is improved, and the corrugated pipe without the interlayer is easy to deform or collapse when bearing larger pressure, so that the normal work of the corrugated pipe is influenced. Finally, the weather resistance and ageing resistance of the corrugated pipe can be reduced without arranging an external protective layer, the external protective layer can effectively prevent the corrosion of ultraviolet rays, oxygen, moisture and other environmental factors on the corrugated pipe, the service life of the corrugated pipe is prolonged, and the corrugated pipe without the external protective layer is easy to age, crack or change color when being exposed in a severe environment for a long time, so that the appearance and the performance of the corrugated pipe are influenced. We therefore provide a double layer bellows. Disclosure of utility model The utility model aims to solve the technical problems that a single-layer corrugated pipe is easy to deform or crack when bearing high pressure or external impact, and the rigidity and the compression resistance of the single-layer corrugated pipe can be reduced by not arranging an interlayer in the middle of the corrugated pipe. In order to achieve the purpose, the double-layer corrugated pipe comprises an end flange, wherein a plurality of flange holes penetrating through the inside of the end flange are formed in the surface of the end flange, the plurality of flange holes are distributed in an annular equidistant mode along the surface of the end flange, an outer layer corrugated pipe and an inner layer corrugated pipe are respectively arranged between the end flanges distributed along two sides, and the outer layer corrugated pipe surrounds the outside of the inner layer corrugated pipe; The surface of the end flange is provided with a first annular groove and a second annular groove respectively, the end of the outer corrugated pipe is inserted into the first annular groove, and the end of the inner corrugated pipe is inserted into the second annular groove; The inner wall of the first annular groove is also provided with a first sealing groove, the inner part of the first sealing groove is filled with a first sealing ring, the inner ring wall of the first sealing ring is tightly abutted against the outer ring wall of the outer corrugated pipe, the inner wall of the second annular groove is provided with a second sealing groove, the inner ring wall of the second sealing groove is tightly abutted against the outer ring wall of the inner corrugated pipe, the first sealing groove and the second sealing groove are of annular structures, and the first sealing ring and the second sealing ring are made of water-swelling rubber materials. Preferably, a channel is arranged at the center of the end flange, the channel is of a conical structure, and the wide opening of the channel is matched with the inner wall surface of the inner corrugated pipe. Preferably, the outer corrugated pipe comprises a base layer, an impact-resistant layer, a waterproof layer and a corrosion-resistant layer, wherein the impact-resistant layer is wrapped on the surface of the base layer, the waterproof layer is wrapped on the surface of the impact-resistant layer, and the corrosion-resistant layer is wrapped on the surface of the waterproof layer. Preferably, the base layer is made of stainless steel materials, and the inner part and the outer part of the base layer are provided with corrugated structures. Preferably, the impact-resistant layer is made of a modified polyurethane material and has a thickness of 0.5