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CN-224214973-U - Seamless steel pipe with heat insulation function

CN224214973UCN 224214973 UCN224214973 UCN 224214973UCN-224214973-U

Abstract

The utility model relates to the technical field of steel pipes and discloses a seamless steel pipe with a heat insulation function, which comprises a steel pipe body, wherein the steel pipe body comprises an inner layer pipe, the inner layer pipe is made of metal, the inner wall is smooth and seamless, the outer wall of the inner layer pipe is fixedly connected with a central layer pipe, the outer wall of the central layer pipe is fixedly connected with an outer layer pipe, and the central layer pipe comprises a plurality of heat insulation strips which are equidistantly and spirally fixedly connected to the outer wall of the inner layer pipe. The utility model adopts the structural design of the composite heat insulation pipe, the inner layer is a metal pipe so as to ensure the strength, the outer layer is wrapped with the heat insulation pipe layer, the composite heat insulation pipe comprises heat insulation strips which are equidistantly and spirally arranged on the outer wall of the inner layer metal pipe, the heat insulation strips are all made of heat insulation materials, namely glass fiber materials, the heat insulation material of the heat insulation pipe layer has low heat conductivity coefficient, and the integral seamless steel pipe can obviously reduce the heat conduction and reduce the heat exchange between a medium and the pipe wall while ensuring the integral strength.

Inventors

  • HUANG XIAOHONG
  • QIAN YANQING
  • QIAN KAI

Assignees

  • 江阴市东昊不锈钢管有限公司

Dates

Publication Date
20260508
Application Date
20250612

Claims (7)

  1. 1. The seamless steel tube with the heat insulation function comprises a steel tube body (1), wherein connecting assemblies are arranged at the front end and the rear end of the steel tube body (1); The steel pipe is characterized in that the steel pipe body (1) comprises an inner layer pipe (11), the inner layer pipe (11) is made of metal, the inner wall is smooth and seamless, the outer wall of the inner layer pipe (11) is fixedly connected with a central layer pipe (12), and the outer wall of the central layer pipe (12) is fixedly connected with an outer layer pipe (13); The central layer pipe (12) comprises a plurality of heat insulation strips (121) which are equidistantly and spirally fixedly connected to the outer wall of the inner layer pipe (11), the heat insulation strips (121) are made of glass fiber materials, and heat insulation middle holes (122) are formed between the central positions of the front end and the rear end of the heat insulation strips (121); the outer layer tube (13) comprises an outer metal tube body (131) fixedly connected to the outer sides of the heat insulation strips (121), a heat preservation coating is sprayed outside the outer metal tube body (131), and the heat preservation coating is a nano heat preservation coating and is coated on the wall surface of the outer metal tube body (131).
  2. 2. A seamless steel pipe with heat insulation function according to claim 1, wherein the outer side wall of the outer pipe (13) is provided with a plurality of grooves (132) at equal angles.
  3. 3. The seamless steel tube with the heat insulation function according to claim 2, wherein a plurality of reinforcing blocks (134) are fixedly connected to the inner side wall of the groove (132) in an equidistant shape from front to back.
  4. 4. A seamless steel pipe with heat insulating function according to claim 1, wherein a plurality of lightening holes (133) are formed between the front and rear side walls of the outer pipe (13) at equal angles.
  5. 5. A seamless steel pipe according to claim 4 wherein the plurality of lightening holes (133) are formed in an equiangular staggered manner with respect to the plurality of grooves (132).
  6. 6. The seamless steel tube with the heat insulation function according to claim 1, wherein the connecting assembly comprises connecting flanges (2) fixedly connected at the front end and the rear end of the steel tube body (1).
  7. 7. The seamless steel tube with the heat insulation function according to claim 6, wherein the inner diameter of the central hole of the connecting flange (2) is the same as the inner diameter of the inner tube (11), and a plurality of connecting holes (3) are formed between the front side wall and the rear side wall of the connecting flange (2) in an equiangular manner.

Description

Seamless steel pipe with heat insulation function Technical Field The utility model relates to the technical field of steel pipes, in particular to a seamless steel pipe with a heat insulation function. Background The seamless steel pipe is a long steel with a hollow section and no seam at the periphery, is manufactured by a whole round steel perforation or rolling process, has higher tensile strength and compressive strength, can bear work under high pressure and high temperature environments, can select different anti-corrosion materials according to different use scenes, such as hot galvanizing, hot aluminizing and the like, can prolong the service life, has wide specification range, has the maximum diameter of 650mm and the minimum diameter of 0.3mm, and can meet the requirements of various different occasions. The existing seamless steel pipe has the following problems that the application of the seamless steel pipe in the industrial and building fields is wide, but the heat insulation performance of the seamless steel pipe is generally weaker, and the heat insulation performance is determined by the material characteristics (high metal heat conductivity coefficient), namely, the seamless steel pipe is mainly made of metal materials such as carbon steel, stainless steel and the like, the heat conductivity coefficient is high (for example, the carbon steel heat conductivity coefficient is about 50W/m & lt/m & gt, K, and the stainless steel heat conductivity coefficient is about 16W/m & lt/m & gt, K), and the heat is easy to quickly transfer through the pipe wall, so that the medium temperature in the pipeline is lost or the external heat invades. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a seamless steel tube with a heat insulation function, and solves the problems proposed by the background technology. (II) technical scheme The seamless steel pipe with the heat insulation function comprises a steel pipe body, wherein the steel pipe body comprises an inner layer pipe, the inner layer pipe is made of metal, the inner wall is smooth and seamless, the outer wall of the inner layer pipe is fixedly connected with a central layer pipe, the outer wall of the central layer pipe is fixedly connected with an outer layer pipe, the central layer pipe comprises a plurality of heat insulation strips which are equidistantly and spirally fixedly connected to the outer wall of the inner layer pipe, the heat insulation strips are made of glass fiber materials, and heat insulation middle holes are formed between the central positions of the front end and the rear end of the heat insulation strips. As a still further scheme of the utility model, the outer layer pipe comprises an outer metal pipe body fixedly connected with the outer sides of the heat insulation strips, a heat insulation coating is sprayed outside the outer metal pipe body, the heat insulation coating is nano heat insulation coating and is coated on the pipe wall surface of the outer metal pipe body, a plurality of grooves are formed in the outer side wall of the outer layer pipe in an equiangular manner, and a plurality of reinforcing blocks are fixedly connected to the inner side wall of each groove in an equidistant manner from front to back. As a still further proposal of the utility model, a plurality of lightening holes are arranged between the front side wall and the rear side wall of the outer layer tube in an equiangular manner, and the lightening holes and the grooves are arranged in an equiangular staggered manner. As a still further proposal of the utility model, the front and the rear ends of the steel pipe body are provided with connecting components, the connecting components comprise connecting flanges which are fixedly connected with the ends of the front and the rear ends of the steel pipe body, the inner diameter of the central hole of each connecting flange is the same as that of the inner layer pipe, and a plurality of connecting holes are arranged between the front and the rear side walls of each connecting flange in an equiangular manner. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, by adopting the structural design of the composite heat-insulating pipe, the inner layer is a metal pipe so as to ensure the strength, the outer layer is wrapped with the heat-insulating pipe layer, the composite heat-insulating pipe comprises heat-insulating strips which are equidistantly and spirally arranged on the outer wall of the inner layer metal pipe, the heat-insulating strips are all made of heat-insulating materials, namely glass fiber materials, the heat conductivity coefficient of the heat-insulating materials of the heat-insulating pipe layer is low, and the integral seamless steel pipe can obviously reduce the heat conduction and reduce the heat exchange between a medium and the pipe