1. The utility model provides a steel lining nanometer polyurethane composite pipe, includes stainless steel pipe (1), its characterized in that: the stainless steel pipe is characterized in that a nano polyurethane pipe (2) is arranged inside the stainless steel pipe (1), a heat preservation layer (3) is arranged on the outer side of the stainless steel pipe (1), a wear-resistant layer (4) is arranged on the outer side wall of the heat preservation layer (3), and an outer pipe (5) is arranged on the outer side wall of the wear-resistant layer (4).

2. The steel-lined nano polyurethane composite pipe according to claim 1, wherein: the inner surface and the outer surface of the stainless steel pipe (1) are passivated by stainless steel passivation solution to generate passivation films.

3. The steel-lined nano polyurethane composite pipe according to claim 1, wherein: the nano polyurethane tube (2) comprises a first nano polyurethane layer (201) and a second nano polyurethane layer (202), wherein the first nano polyurethane layer (201) is sleeved inside the second nano polyurethane layer (202), and a cavity (203) is arranged between the first nano polyurethane layer and the second nano polyurethane layer.

4. The steel-lined nano polyurethane composite pipe according to claim 3, wherein: a nano polyurethane net (204) is arranged in the cavity (203), and two sides of the nano polyurethane net (204) are respectively connected with the side walls of the first nano polyurethane layer (201) and the second nano polyurethane layer (202).

5. The steel-lined nano polyurethane composite pipe according to claim 1, wherein: the heat preservation layer (3) is made of a phenolic foam layer (301) and a glass fiber cotton layer (302), and the glass fiber cotton layer (302) is arranged on the outer side wall of the phenolic foam layer (301).

6. The steel-lined nano polyurethane composite pipe according to claim 1, wherein: the wear-resistant layer (4) comprises a polyamide fiber layer (401) and a polyester fiber layer (402), and the polyamide fiber layer (401) and the polyester fiber layer (402) are sequentially arranged on the outer side wall of the heat-insulating layer (3) from inside to outside.

7. The steel-lined nano polyurethane composite pipe according to claim 1, wherein: the outer layer pipe (5) is made of high-molecular polyethylene, the surface of the outer layer pipe is coated with anticorrosive paint, and the anticorrosive paint is bisphenol A epoxy resin anticorrosive paint formed by condensation polymerization of bisphenol A and epoxy chloropropane.

Background

Polyurethane material is short for polyurethane, and is called polyurethane in English, which is a high polymer material, is a new organic high polymer material, is known as 'fifth plastic', and is widely applied to various fields of national economy due to excellent performance, and the product application field relates to light industry, chemical industry, electronics, textiles, medical treatment, buildings, building materials, automobiles, national defense, aerospace, aviation and the like. The composite pipe is a multi-layer structure pipe which is formed by compounding two layers (including two layers) or more of pipes through some processing technologies. The steel lining polyurethane composite pipe is a composite pipeline which is processed by a special process by using a steel pipe as a matrix and using a polyurethane material with high wear resistance, high elasticity and high corrosion resistance as an inner lining, has excellent comprehensive performances of wear resistance, acid resistance, alkali resistance, scaling resistance, radiation resistance, hydrolysis and aging resistance, high elasticity, mechanical impact resistance and the like, and is widely applied by gradually replacing the traditional steel pipe. The common steel-lined nano polyurethane composite pipe has the following problems:

1. the mechanical impact resistance of the common steel-lined polyurethane composite pipe is realized through the material, the possibility of breakage still exists after the pipe is impacted, and the content is easy to leak after the pipe is broken.

2. The common polyurethane composite pipe material in the sentry village does not have the cold-resistant and heat-insulating functions generally, and the temperature in the pipe can be rapidly reduced along with the reduction of the air temperature in cold weather.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a steel-lined nano polyurethane composite pipe, which solves the problems that the content is easy to leak and the heat preservation performance is lacked when the steel-lined nano polyurethane composite pipe is cracked by impact.

The second technical proposal.

The invention specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a steel lining nanometer polyurethane composite pipe, includes nonrust steel pipe, the inside of nonrust steel pipe is equipped with nanometer polyurethane pipe, the outside of nonrust steel pipe is equipped with the heat preservation, be equipped with the wearing layer on the lateral wall of heat preservation, be equipped with outer pipe on the lateral wall of wearing layer.

Furthermore, the inner surface and the outer surface of the stainless steel pipe are passivated by stainless steel passivation solution to generate passivation films.

Further, the nanometer polyurethane pipe comprises a first nanometer polyurethane layer and a second nanometer polyurethane layer, wherein the first nanometer polyurethane layer is sleeved inside the second nanometer polyurethane layer, and a cavity is arranged between the first nanometer polyurethane layer and the second nanometer polyurethane layer.

Furthermore, a nano polyurethane net is arranged in the cavity, and two sides of the nano polyurethane net are respectively connected with the side walls of the first nano polyurethane layer and the second nano polyurethane layer.

Furthermore, the heat preservation layer comprises a phenolic foam layer and a glass fiber cotton layer, and the glass fiber cotton layer is arranged on the outer side wall of the phenolic foam layer.

Further, the wear-resisting layer includes polyamide fiber layer and polyester fiber layer, polyamide fiber layer and polyester fiber layer arrange in proper order on the lateral wall of heat preservation layer from inside to outside.

Furthermore, the outer layer pipe is made of high-molecular polyethylene, the surface of the outer layer pipe is coated with anticorrosive paint, and the anticorrosive paint is bisphenol A epoxy resin anticorrosive paint formed by condensation polymerization of bisphenol A and epoxy chloropropane.

(III) advantageous effects

Compared with the prior art, the invention provides a steel-lined nano polyurethane composite pipe, which has the following beneficial effects:

according to the invention, through the arrangement of the first nano polyurethane pipe, the second nano polyurethane layer and the nano polyurethane net, when the first nano polyurethane layer or the second nano polyurethane layer is broken due to impact on the steel-lined nano polyurethane composite pipe, the broken part is not easy to expand, and more loss caused by opening expansion is avoided.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the structure of the nano polyurethane tube of the present invention;

FIG. 3 is a schematic cross-sectional structure of a nano-polyurethane tube according to the present invention;

FIG. 4 is a schematic cross-sectional structure of a polyester fiber layer according to the present invention;

fig. 5 is a schematic cross-sectional structure of the wear-resistant layer of the present invention.

In the figure: 1. a stainless steel tube; 2. a nano polyurethane tube; 201. a first nano polyurethane layer; 202. a second nano polyurethane layer; 203. a cavity; 204. a nano polyurethane mesh; 3. a heat-insulating layer; 301. a phenolic foam layer; 302. a glass fiber cotton layer; 4. a wear layer; 401. a polyamide fiber layer; 402. a polyester fiber layer; 5. an outer tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, a steel-lined nano-polyurethane composite pipe provided in an embodiment of the present invention includes a stainless steel pipe 1, a nano-polyurethane pipe 2 is disposed inside the stainless steel pipe 1, a heat insulating layer 3 is disposed outside the stainless steel pipe 1, a wear-resistant layer 4 is disposed on an outer side wall of the heat insulating layer 3, an outer pipe 5 is disposed on an outer side wall of the wear-resistant layer 4, and the heat insulating layer 3 and the wear-resistant layer 4 disposed on an outer side wall of the stainless steel pipe 1 make the steel-lined nano-polyurethane composite pipe have good wear resistance, acid resistance, alkali resistance, scaling resistance, radiation resistance, hydrolysis resistance, aging resistance, high elasticity, and good mechanical impact resistance and heat insulating performance, and the outer pipe 5 is disposed to prolong a service life of the wear-resistant layer 4.

As shown in fig. 1, in some embodiments, the inner and outer surfaces of the stainless steel pipe 1 are passivated by a stainless steel passivation solution to generate a passivation film, and the stainless steel pipe 1 is soaked in the passivation solution to generate the passivation film, so that the corrosion resistance of the stainless steel pipe 1 is further improved, the corrosion time is prolonged, and the purpose of prolonging the service life of the steel-lined nano polyurethane composite pipe is achieved.

As shown in fig. 2 and fig. 3, in some embodiments, the nano polyurethane tube 2 includes a first nano polyurethane layer 201 and a second nano polyurethane layer 202, the first nano polyurethane layer 201 is sleeved inside the second nano polyurethane layer 202, and a cavity 203 is disposed therebetween, by disposing the first nano polyurethane layer 201, the second nano polyurethane layer 202 and the cavity 203, the first nano polyurethane layer 201 inside the steel-lined nano polyurethane composite tube can be used for a period of time after being corroded, so as to prolong the time that the first nano polyurethane layer is damaged by corrosion, and at the same time, by disposing the first nano polyurethane layer 201 and the second nano polyurethane layer 202, the content is not easy to leak out when the nano polyurethane tube 2 is broken.

As shown in fig. 2 and 3, in some embodiments, a nano polyurethane net 204 is disposed in the cavity 203, two sides of the nano polyurethane net 204 are respectively connected to the sidewalls of the first nano polyurethane layer 201 and the second nano polyurethane layer 202, and by disposing the nano polyurethane net 204, when the first nano polyurethane layer 201 or the second nano polyurethane layer 202 is broken due to an impact on the steel-lined nano polyurethane composite pipe, the broken portion is limited by the nano polyurethane net 204, which is not easy to expand, thereby avoiding the expansion of the broken opening, causing more losses, and at the same time, limiting the range of the broken opening, facilitating the repair of the pipe body, and reducing the cost for replacing the pipe.

As shown in fig. 4, in some embodiments, the insulating layer 3 includes a phenolic foam layer 301 and a glass fiber cotton layer 302, the glass fiber cotton layer 302 is disposed on an outer sidewall of the phenolic foam layer 301, and by disposing the phenolic foam layer 301 and the glass fiber cotton layer 302, the insulating effect of the steel-lined nano polyurethane composite pipe is improved, meanwhile, the phenolic foam has a strong fireproof and sound-insulating property, but a poor mechanical property, and the glass fiber cotton has a good corrosion resistance and a good mechanical strength, so that the glass fiber cotton layer 302 can protect the phenolic foam layer 301.

As shown in fig. 5, in some embodiments, the wear-resistant layer 4 includes a polyamide fiber layer 401 and a polyester fiber layer 402, the polyamide fiber layer 401 and the polyester fiber layer 402 are sequentially arranged on the outer side wall of the heat-insulating layer 3 from inside to outside, and through the arrangement of the polyamide fiber layer 401 and the polyester fiber layer 402, the wear-resistant performance of the steel-lined nano polyurethane composite tube is improved, and meanwhile, the polyester fiber has a better shape-preserving performance, which is beneficial to maintaining the overall shapes of the heat-insulating layer 3 and the wear-resistant layer 4, and avoiding the structure from falling off.

As shown in fig. 1, in some embodiments, the outer pipe 5 is made of polymer polyethylene, and the surface thereof is coated with an anticorrosive paint, and the anticorrosive paint is bisphenol a epoxy resin anticorrosive paint formed by polycondensation of bisphenol a and epichlorohydrin, and by arranging the outer pipe 5 made of polymer polyethylene, the impact resistance, wear resistance and self-lubricating performance of the steel-lined nano-polyurethane composite pipe are improved, and meanwhile, the outer pipe 5 is also conveniently coated with the anticorrosive paint, so that the external anticorrosive performance of the steel-lined nano-polyurethane composite pipe is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.