On-line covering method of solar selective heat absorption belt and electrostatic membrane

Abstract

The invention discloses an on-line covering method of a solar selective heat absorption belt and an electrostatic membrane, and belongs to the technical field of flat plate solar heat collectors. A winding shaft in a winding chamber is used for continuously conveying the solar selective heat absorption belt into the winding chamber; the temperature of the winding chamber is 70-80 DEG C and the vacuum degree of the winding chamber is 2*10<-2>Pa; the electrostatic membrane is retreated from a retreating shaft and is guided by a steering shaft to flatly move towards a gap between a pair of membrane coating rollers; two spiral flattening grooves, which extend towards the shaft ends, are formed in the middle position of the steering shaft; the solar selective heat absorption belt moves to pass through a guide roller and enters the gap together with the electrostatic membrane; the electrostatic membrane and the solar selective heat absorption belt are compounded in a manner that all faces are opposite completely to form a solar selective heat absorption membrane coating belt; and the solar selective heat absorption membrane coating belt is wound on the winding shaft after being released from the membrane coating rollers. With the adoption of the reliable method, the obtained solar selective heat absorption membrane coating belt is flat, has no bubbles and is not damaged.

Description

【Technical field】 [0001] The invention relates to an on-line lamination method of a solar selective absorption band and an electrostatic film, and belongs to the technical field of flat solar heat collectors. 【Background technique】 [0002] The solar selective heat absorbing plate is formed by spraying a layer of blue film coating with a thickness of 300nm on one side of the 0.4mm thick copper foil or aluminum foil substrate. , heat transfer, its structure and performance directly determine the thermal performance of the flat panel solar collector. [0003] The heat-absorbing working surface of the solar selective heat-absorbing belt is a blue film coating, and a layer of anti-scratch protective film needs to be adhered to the surface of the blue film coating. Usually, the solar selective heat-absorbing belt is cut on a shearing machine according to the process requirements. A plate shape with a certain length and width specification, and then this layer of anti-scratch pro...

AI Technical Summary

Problems solved by technology

[0003] The heat-absorbing working surface of the solar selective heat-absorbing belt is a blue film coating, and a layer of anti-scratch protective film needs to be adhered to the surface of the blue film coating. Usually, the solar selective heat-absorbing belt is cut on a shearing machine according to the process requirements. A plate shape with a certain length and width specification, and then this layer of anti-scratch protective film is bonded to a fixed-area solar selective heat-absorbing plate under normal temperature and normal pressure. This bonding method is not only low in work efficiency, but also , the adhesion strength of the anti-scratch protective film is not easy to grasp. It will cause a certain degree of damage to the extremely thin blue film coating, and it will even be accompanied by the peeling of the blue film coating; There is a risk of scratches, scratches or scratches on the blue film coating during movement and transportation, while the anti-scratch protective film attached to the normal pressure environment is prone to bubbles, and there is a deficiency in the adhesion of the anti-scratch protective film.

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