CN-119826000-B - Nonmetallic composite hydrogen-transporting hose with multi-form hydrogen-blocking layer

CN119826000BCN 119826000 BCN119826000 BCN 119826000BCN-119826000-B

Abstract

The invention discloses a nonmetallic composite hydrogen-transporting hose with a multi-form hydrogen-blocking layer. The invention discloses a nonmetal composite hydrogen-transporting hose which comprises a nonmetal inner pipe, a nonmetal fiber reinforced layer and a nonmetal outer protection pipe, wherein the nonmetal inner pipe, the nonmetal fiber reinforced layer and the nonmetal outer protection pipe are sleeved in sequence from inside to outside, the nonmetal inner pipe is sequentially provided with an organic hydrogen-resisting coating, a composite fiber inner liner pipe and a barrier layer from inside to outside, the nonmetal fiber reinforced layer is sequentially provided with a fiber prepreg winding layer and a reinforcing rib layer from inside to outside, the nonmetal inner pipe and the nonmetal fiber reinforced layer are mutually bonded by adopting thermosetting polyurethane, and the nonmetal fiber reinforced layer and the nonmetal outer protection pipe are connected in a non-bonding mode. The nonmetal composite hose has good hydrogen leakage prevention capability and flexibility, and can be used for conveying high-pressure hydrogen.

Inventors

CHEN YANFEI
XIANG TAO
LIU RUIHAO
PENG ZENGLI
LIU YU
ZHONG RONGFENG
WANG SHUNTING
He Yuecheng
WANG XIN
YIN YI

Assignees

中国石油大学(北京)

Dates

Publication Date: 20260505
Application Date: 20240927

Claims (9)

1. The nonmetal composite hydrogen transmission hose with the multi-form hydrogen resistance layer is characterized by comprising a nonmetal inner tube, a nonmetal fiber reinforced layer and a nonmetal outer protection tube which are sleeved in sequence from inside to outside; The nonmetallic inner tube is sequentially provided with an organic hydrogen-resistant coating, a composite fiber inner liner tube and a barrier layer from inside to outside; the nonmetallic fiber reinforced layer is sequentially provided with a fiber presoaked winding layer and a reinforcing rib layer from inside to outside; the nonmetal inner tube and the nonmetal fiber reinforced layer are mutually bonded by adopting thermosetting polyurethane, and the nonmetal fiber reinforced layer and the nonmetal outer protection tube are connected in a non-bonding mode; The barrier layer comprises an adhesive matrix layer and hydrogen-blocking powder particles dispersed in the adhesive matrix layer; In the section of the bonding matrix layer, the hydrogen-resistant powder particles are staggered by half or one hydrogen-resistant powder particle length in parallel along the axial direction, and the hydrogen permeability of the hydrogen-resistant powder particles is less than 3.5X10 -9 mol·m/m 2 s & MPa.
2. The nonmetallic composite hydrogen-transporting hose with the multi-form hydrogen-blocking layer according to claim 1, wherein the nonmetallic inner tube is characterized in that the organic hydrogen-blocking coating is coated on the inner wall of the composite fiber lining tube in a spraying mode and forms a stable surface coating through baking, and the composite fiber lining tube and the blocking layer are formed by multilayer heating co-extrusion.
3. The non-metallic composite hydrogen transfer hose with a multi-form hydrogen barrier according to claim 1 or 2, wherein the composite fiber inner liner, the reinforcing rib layer and the non-metallic outer protective tube are made of polyethylene and/or polyvinylidene fluoride.
4. The non-metallic composite hydrogen transfer hose with a multi-form hydrogen barrier layer of claim 1 or 2, wherein the organic hydrogen barrier coating is made of at least one of polyvinylidene fluoride, polytetrafluoroethylene, and modified polyvinylidene fluoride; The organic hydrogen-resistant coating is of a single-layer structure and has a thickness of 10-100 mu m.
5. The nonmetallic composite hydrogen-transporting hose with the multi-form hydrogen-blocking layer according to claim 1 or 2, wherein the adhesive matrix layer is made of a polyvinylamine resin material, and the hydrogen-blocking powder particles are concave particles made of hydrogen-blocking powder; the thickness of the barrier layer is 0.1-500 mu m.
6. The non-metallic composite hydrogen transfer hose with a multi-form hydrogen barrier of claim 5, wherein the hydrogen barrier powder is selected from at least one of graphene powder, nanoclay powder, and molybdenum powder.
7. The nonmetallic composite hydrogen-transporting hose with the multi-form hydrogen-blocking layer according to claim 1 or 2, wherein the fiber presoaked winding layer is of a multi-layer structure, the winding angle is 60-80 degrees, and the number of layers is 3-6; the fiber prepreg winding layer is made of at least one material selected from polyester fiber, aramid fiber and glass fiber.
8. The non-metallic composite hydrogen transfer hose with a multi-form hydrogen barrier according to claim 1 or 2, wherein in the non-metallic fiber reinforced layer, the reinforcing rib layer is arranged on the outer wall of the fiber prepreg winding layer in a spiral winding manner or an axial manner; the reinforcing rib layer is connected to the outer wall of the fiber prepreg winding layer through an adhesive and is cured through heating.
9. The non-metallic composite hydrogen delivery hose with a multi-form hydrogen barrier according to claim 1 or 2, wherein a cavity formed between the non-metallic fiber reinforced layer and the non-metallic outer protective tube is filled with a liquid having a hydrogen absorption function; the liquid with the hydrogen absorption function comprises unsaturated organic silicon resin.

Description

Nonmetallic composite hydrogen-transporting hose with multi-form hydrogen-blocking layer Technical Field The invention belongs to the technical field of new energy development and utilization, and relates to a nonmetal compound hydrogen-transporting hose with a multi-form hydrogen-blocking layer. Background The widespread use of traditional fossil energy releases a large amount of greenhouse gases, which has a serious impact on the global ecological environment. At the same time, along with continuous exploitation of human beings, exhaustion of fossil energy is also an unavoidable problem. So in recent years, the world countries take action to actively search for secondary energy. The hydrogen energy has the advantages of rich reserves, high heat value, no pollution of combustion products and the like, is a secondary energy source with great development prospect, and is known as final energy source. In order to realize large-scale utilization of hydrogen energy, researches on problems related to a hydrogen transportation mode, transportation safety and the like are required. The pipeline hydrogen transportation is the large-scale long-distance hydrogen transportation mode with best economical efficiency and highest efficiency at present. When the existing pipeline is used for carrying out hydrogen loading transportation or newly built steel pipeline is used for carrying out pure hydrogen transportation, the problems of hydrogen bubbling, hydrogen induced cracking and other hydrogen embrittlement can be avoided, and further accidents such as failure or leakage of the hydrogen transportation pipeline are caused, serious harm is generated to the steel pipe body and the surrounding environment of the pipeline, and therefore research on the novel hydrogen transportation pipeline is required to be carried out. The use of nonmetallic materials as the tubing for hydrogen transfer pipelines is an effective method for avoiding the problem of hydrogen embrittlement. At present, a high-strength steel wire is wound outside a non-metal inner pipe to meet the requirement of the strength of the pipeline, but the risk of hydrogen embrittlement of the pipeline is increased to a certain extent. The molecular volume of hydrogen is very small, the possibility of leakage is higher when the hydrogen passes through the weak part of the pipe wall and the joint of the pipe and equipment, and meanwhile, the molecular weight of the hydrogen is very small, so that the diffusion speed of the hydrogen is higher, and serious combustion explosion accidents are easier to cause. It is therefore important to prevent leakage of hydrogen from the pipeline. The existing nonmetallic composite hydrogen-conveying hose mostly adopts a single-layer hydrogen-resisting structure, and when a hydrogen-resisting layer is damaged or conveying pressure is high, the hydrogen-conveying pipeline cannot be guaranteed to have good leakage-proof capability. Disclosure of Invention The invention aims to provide a nonmetallic composite hydrogen-transporting hose with a multi-form hydrogen-blocking layer. The nonmetal composite hose has good hydrogen leakage prevention capability and flexibility, and can be used for conveying high-pressure hydrogen. The pipeline main body consists of a nonmetallic inner pipe, a nonmetallic fiber reinforced layer and a nonmetallic outer protection pipe, wherein the nonmetallic inner pipe and the nonmetallic fiber reinforced layer are mutually bonded. The nonmetal inner tube consists of an organic hydrogen-resistant coating, a composite fiber inner liner tube and a barrier layer, the nonmetal fiber reinforced layer consists of a fiber presoaked winding layer and a reinforcing rib layer, and liquid unsaturated organic silicon resin capable of quickly absorbing hydrogen is filled between the nonmetal fiber reinforced layer and the nonmetal outer protective tube. The invention provides a nonmetal composite hydrogen transmission hose with a multi-form hydrogen blocking layer, which comprises a nonmetal inner tube, a nonmetal fiber reinforced layer and a nonmetal outer protection tube which are sleeved in sequence from inside to outside; The nonmetallic inner tube is sequentially provided with an organic hydrogen-resistant coating, a composite fiber inner liner tube and a barrier layer from inside to outside; the nonmetallic fiber reinforced layer is sequentially provided with a fiber presoaked winding layer and a reinforcing rib layer from inside to outside; The nonmetal inner tube and the nonmetal fiber reinforced layer are mutually bonded by adopting thermosetting polyurethane, and the nonmetal fiber reinforced layer and the nonmetal outer protection tube are connected in a non-bonding mode. In the nonmetallic composite hydrogen-transporting hose with the multi-form hydrogen-blocking layer, the organic hydrogen-blocking coating is coated on the inner wall of the composite fiber lining pipe in a spraying mode in the nonmetallic inner pip