CN204227025U - Composite Cylinders - Google Patents

Abstract

The utility model relates to a composite material gas cylinder, which comprises an inner container and a winding layer, wherein a transition layer is arranged between the inner container and the winding layer; the outer surface of the winding layer is provided with the protective layer, so that the outer surface state of the composite material gas cylinder is improved, the tolerance degree of the composite material gas cylinder to severe conditions is improved, the product quality can be stabilized, and the storage service life of the gas cylinder is prolonged.

Description

Composite Cylinders

technical field

The utility model relates to a composite material gas cylinder, in particular to a composite material gas cylinder for protecting the interface and winding layer of the composite material gas cylinder.

Background technique

Composite gas cylinder is a gas cylinder made by winding and curing resin-impregnated carbon fibers on the outer surface of a steel liner. Composite material gas cylinders are an effective solution to realize the research and development needs of lighter gas cylinders and higher safety factors. Material gas cylinder is the goal of development and pursuit in the industry.

However, in the prior art, the composite material gas cylinders are prone to electrochemical corrosion due to the direct contact between the carbon fiber and the metal cylinder body, resulting in low interface bonding performance between the wrapping layer and the steel liner, and the composite material gas cylinders are not resistant to harsh storage conditions. poor degree.

Utility model content

The utility model aims at the problems existing in the above-mentioned prior art, and provides a composite material gas cylinder, which solves the problem of poor tolerance of the composite material gas cylinder to harsh storage conditions in the prior art.

 The technical scheme of the utility model is as follows:

The gas cylinder made of composite material comprises an inner tank and a wrapping layer, a transition layer is arranged between the inner tank and the wrapping layer; a protective layer is arranged on the outer surface of the wrapping layer.

The transition layer is an insulating layer.

The insulating layer is a PUA moisture-curing polyurethane advanced anti-corrosion paint Q/YJT 010-2005 paint layer.

The protective layer includes a putty layer and a paint layer.

The paint layer includes a primer layer and a topcoat layer.

The advantages and effects of the utility model are:

The interface bonding performance between the winding layer and the steel liner is improved by setting a transition layer, and at the same time, the steel liner is insulated from the winding carbon fiber, so that the winding layer and the metal liner are firmly bonded during the working process, and the quality stability of the product is improved. . The protective layer on the outer surface of the winding layer improves the outer surface state of the composite material gas cylinder, and at the same time improves the tolerance of the composite material gas cylinder against harsh conditions, which can stabilize product quality and increase the storage life of the gas cylinder.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1. liner, 2. transition layer, 3. winding layer, 4. putty layer, 5. paint layer.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments with reference to the accompanying drawings.

Example

As shown in Figure 1, the composite gas cylinder includes an inner tank 1 and a wrapping layer 3, an insulating transition layer 2 is provided between the inner tank 1 and the wrapping layer 3; a protective layer is provided on the outer surface of the wrapping layer. The protective layer includes a putty layer 4 and a paint layer 5, and the paint layer includes a primer layer and a topcoat layer.

The outer surface protection method of the present utility model comprises the following steps:

Step 1. Blow sand on the outer surface of the steel inner tank. The purpose of sand blasting is to roughen the outer surface of the steel inner tank, which can improve the bonding force between the metal surface and the paint layer; use 40-100 mesh fine sand to control Wind pressure ≤ 0.3 MPa; to prevent deformation of the inner tank caused by excessive sand blowing wind pressure.

Step 2: Spray varnish on the outer surface of the steel liner, and use PUA moisture-curing polyurethane advanced anti-corrosion paint Q/YJT 010-2005. This coating is used as an insulating layer between the carbon fiber and the metal surface to avoid corrosion caused by direct contact between the fiber and the metal liner. During the spraying process, the viscosity is controlled to 25-29S, and the coating is thin and uniform, ensuring a uniform and complete transition layer while improving the bonding performance.

Step 3, the outer surface protection of the wrapping layer, first use sandpaper to roughen the surface of the wrapping layer, wipe it clean with absorbent cotton dipped in acetone after polishing, scrape and apply bisphenol A type epoxy vinyl resin putty within 2 hours, and use sandpaper after drying Grind the surface of the putty layer evenly, and the raised parts have a smooth transition. After leveling, clean it with acetone, spray H06-2 Zinc Yellow Epoxy Ester Primer HG/T 2239-1991 after drying, viscosity 14-19s, curing condition 23±2℃, let it air for 24 hours. After polishing the primer with sandpaper, spray PU-6002 moisture-curing polyurethane advanced anti-corrosion paint Q/YJT 010-2005 on the entire surface, viscosity (43-48) s, and cure at room temperature for more than 48 hours.

The gas cylinder coating of the utility model has carried out the three anti-tests of salt spray, damp heat and mold, and its test method, conditions and structure are as shown in Table 1.

Table 1

Through the three-proof test, the protective layer on the outer surface of the gas cylinder of the utility model can meet the three-proof performance requirements of the high-pressure gas cylinder used for missiles.

Claims (3)

1. Composite material gas cylinder, it is characterized in that comprising liner and wrapping layer, transition layer is provided between liner and wrapping layer; The outer surface of wrapping layer is provided with protective layer; Described protective layer comprises putty layer and paint layer ; The paint layer includes a primer layer and a topcoat layer. 2. The composite gas cylinder according to claim 1, characterized in that the transition layer is an insulating layer. 3. The composite gas cylinder according to claim 2, characterized in that the insulating layer is a PUA moisture-curing polyurethane advanced anticorrosion paint Q/YJT 010-2005 paint layer.