CN215721392U

CN215721392U - Polyurethane elastomer exports hose

Info

Publication number: CN215721392U
Application number: CN202120403364.XU
Authority: CN
Inventors: 束栋平
Original assignee: Jiangsu Xisha Technology Co ltd
Current assignee: Jiangsu Xisha Technology Co ltd
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-02-01
Anticipated expiration: 2031-02-23

Abstract

The utility model discloses a polyurethane elastomer output hose. It includes interior glue film and outer glue film, has set gradually netted cord layer, enhancement layer, steel wire casing ply and interbedded layer and body material layer from inside to outside between interior glue film and the outer glue film, and the cladding has the polyurethane layer outside the outer glue film. The advantages are that: the outer rubber layer is coated with the polyurethane layer, so that the corrosion resistance is improved, and the pipe has good wear resistance, the outer rubber layer is protected, the damage of the oil pipe in the repeated winding process is avoided, the reinforcing layer is arranged between the net-shaped cord layer and the steel wire framework layer, the stability of the pipe body can be greatly improved, the pressure resistance level is very high, the wire framework layer is arranged on the reinforcing layer, so that the pipe body has enough deflection to resist the influence of sea waves on the pipe body, the overall composite strength can be very high between the steel wire framework layer and the floating body material layer through the interlayer arrangement, the floating body material layer made of the foam material enables the pipe body to have large buoyancy, and the pipe can adapt to severe environment.

Description

Polyurethane elastomer exports hose

Technical Field

The utility model relates to an ocean engineering oil hose, in particular to a polyurethane elastomer output hose.

Background

Petroleum is blood for promoting economic development, 60 percent of newly discovered oil and gas fields are located at sea in recent 10 years, the global oil and gas reserves of 40 percent are expected to be concentrated in deep sea areas in the future and gradually develop to deep sea and far sea along with the development of marine oil and gas, the cost and the risk of laying long-distance oil and gas return pipelines are higher and higher, the most effective way for solving the problem is to build an oil and gas processing plant FPSO at sea, the oil storage and the oil discharge of the oil and gas processing plant FPSO are bound to be carried out by an external oil delivery pipe, in the prior art, the winding frame is frequently used in the recycling process, the influence of the oil pipe on the strength of the outer layer is large in the repeated winding process, the problems of tearing, corrosion and the like of the oil pipe are easily caused, the service life is reduced, the cost is very high due to the replacement of the damaged oil pipe, in addition, the structural design of the existing oil pipe is limited, so that the oil pipe is low in bearing pressure and easy to damage.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a polyurethane elastomer output hose which has the advantages of good wear resistance, good tear resistance, strong pressure bearing capability and corrosion resistance, thereby greatly prolonging the service life.

In order to solve the technical problem, the polyurethane elastomer output hose comprises an inner rubber layer and an outer rubber layer, wherein a reticular cord layer, a reinforcing layer, a steel wire framework layer, an interlayer and a floating body material layer are sequentially arranged between the inner rubber layer and the outer rubber layer from inside to outside, and a polyurethane layer is coated outside the outer rubber layer.

Further, the steel wire framework layer is made of rubber-wrapped elastic steel wires.

Further, the floating body material layer is made of EVA foaming material.

Further, the reinforcing layer is formed by mixing cords and natural rubber through adhesive insertion.

Further, the number of layers of the cord is 8 to 18.

Further, the interlayer is synthetic rubber.

The utility model has the advantages that:

because the polyurethane layer is directly coated outside the outer rubber layer, the corrosion resistance of the pipe is improved, and the pipe has good wear resistance, the outer rubber layer is protected, the damage of the oil pipe in the repeated winding process is avoided, the pressure resistance stability of the pipe body can be greatly improved by arranging the reinforcing layer between the net-shaped cord layer and the steel wire framework layer, the pressure resistance level is very high, meanwhile, the steel wire framework layer is arranged on the reinforcing layer, so that the pipe body has enough deflection to resist the influence of sea waves on the pipe body, in addition, the overall composite strength can be very high by arranging the reinforcing layer between the steel wire framework layer and the floating body material layer, and the floating body material layer made of the EVA foaming material enables the floating body material layer to have larger buoyancy, and can adapt to severe environment.

Drawings

FIG. 1 is a schematic view of a partial cross-sectional structure of a polyurethane elastomer hose according to the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Detailed Description

The polyurethane elastomer hose according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

As shown in the figure, the polyurethane elastomer output hose sequentially comprises an inner rubber layer 1, a reticular cord layer 3 coated on the outer surface of the inner rubber layer 1, a reinforcing layer 4 coated on the outer surface of the reticular cord layer 3, a steel wire framework layer 5 coated on the outer surface of the reinforcing layer 4 and made of elastic steel wires, a floating body material layer 7 made of foam materials and an outer rubber layer 2 coated on the outer surface of the floating body material layer 7, an interlayer layer 6 for improving the composite strength is arranged between the steel wire framework layer 5 and the floating body material layer 7, and a polyurethane layer 8 is coated outside the outer rubber layer 2, the polyurethane layer is directly coated outside the outer rubber layer, so that the corrosion resistance of the outer rubber layer is improved, the outer rubber layer has good wear resistance, the outer rubber layer is protected, and simultaneously, because the polyurethane layer is directly coated outside the outer rubber layer, the bonding strength is more than or equal to 3N/mm, and the combination is firm.

Further, the reinforcing layer is a material formed by mixing cords and natural rubber through a high-strength adhesive insertion technology, wherein the number of the cords is 8-18, so that a sufficient pressure-resistant grade can be achieved, and the interlayer layer is synthetic rubber for bonding the steel wire framework layer 5 and the floating body material.

The external conveying hose adopting the polyurethane elastomer has the following main technical requirements:

manufacturing specification GMPHM 2009 standard.

Pressure grade: 15-21 bar.

Operating temperature: -20 to 82 degrees Celsius

Flow rate: not more than 21 m/s.

Flange: carbon steel, flat flange and ASME B16.5 flange standard, butt welded, galvanized or speltered, 150 pound grade. The welding specification is in accordance with part OCIMF 1.5.2.

Curvature: minimum bend radius 6D.

Lining: synthetic rubber, smooth, and resistant to crude oil.

Buoyancy: the minimum content is 20 percent

And (3) detection specification: tested according to gmp hom 2009.

Hydrostatic performance: after a hydrostatic test of 1.5Mpa, the permanent elongation of the rubber tube is not more than 0.7 percent, and the temporary elongation is not more than 2.5 percent.

Vacuum performance: the hose was tested under-0.085 Mpa for 10min under vacuum and visually inspected for defects on the inside and outside of the hose.

Kerosene resistance: the hose was filled with kerosene, the internal pressure was increased to 1.5MPa and held for 6 hours, and then decreased to 0.75MPa and held for 12 hours. The entire hose and fitting should be visually free of leaks, blisters or any other defects.

Conductivity: the electric conduction is realized, and the resistance is less than 0.75 omega/m.

Length tolerance: the length tolerance of the hose is less than or equal to 1 percent.

The Shore A hardness of PU is more than or equal to 70 after verification; the elongation at break is more than or equal to 500 percent; the Akron abrasion coefficient is less than or equal to 0.008cm3/1.61 km; the interlaminar peeling strength is more than or equal to 6N/mm, and the use effect is obvious.

Claims

1. The utility model provides a polyurethane elastomer exports hose, includes interior glue film (1) and outer glue film (2), its characterized in that: the novel floating floor is characterized in that a net-shaped cord layer (3), a reinforcing layer (4), a steel wire framework layer (5), an interlayer (6) and a floating body material layer (7) are sequentially arranged between the inner rubber layer (1) and the outer rubber layer (2) from inside to outside, and a polyurethane layer (8) is coated outside the outer rubber layer (2).

2. The polyurethane elastomer output hose according to claim 1, wherein: the steel wire framework layer (5) is made of elastic steel wires.

3. The polyurethane elastomer output hose according to claim 1 or 2, wherein: the floating body material layer (7) is made of EVA (ethylene vinyl acetate) foam material.

4. The polyurethane elastomer output hose according to claim 3, wherein: the reinforcing layer is formed by mixing cord threads and natural rubber through bonding and glue inserting.

5. The polyurethane elastomer output hose according to claim 4, wherein: the number of layers of the cord is 8-18.

6. The polyurethane elastomer output hose according to claim 1, 2, 4 or 5, wherein: the interlayer is made of synthetic rubber.