Flexible hot-pressing device for adhesion of secondary screen wall of Mark type cargo containment system and hot-pressing method of flexible hot-pressing device

Abstract

The invention discloses a flexible hot-pressing device for adhesion of a secondary screen wall of a Mark type cargo containment system. The flexible hot-pressing device comprises a hot-pressing devicebody and a combined device used for detecting and calibrating the temperature and pressure of the hot-pressing device body. The hot-pressing device body comprises the secondary screen wall adhering to an inner shell of a ship body, a flexible part used for extruding the screen wall and an extruding part used for extruding the flexible part. The secondary screen wall comprises a polyurethane insulating plate part adhering to the inner shell of the ship body, a glue layer arranged above the polyurethane insulating plate part and a flexible secondary screen wall layer arranged above the glue layer. According to the flexible hot-pressing device, a hot-pressing bag is designed to make direct contact with the flexible secondary screen wall layer, then the situation that the hot-pressing bag makes contact with the flexible secondary screen wall layer through a rigid plate is avoided, and thus extrusion contact between a pressing plate and the flexible secondary screen wall layer is replaced;and through the self-adaption mode of the hot-pressing bag, pressure balance of the flexible secondary screen wall layer is achieved.

Description

technical field [0001] The invention relates to a flexible hot-pressing device, in particular to a flexible hot-pressing device for bonding secondary barrier walls of a Mark-type cargo containment system. Background technique [0002] The cargo containment system of Mark-type ultra-low temperature liquefied gas storage and transportation ships mainly engaged in liquefied natural gas (LNG) marine transportation is equipped with a complete secondary barrier system according to the requirements of the International Maritime Organization (IMO) rules. This secondary barrier system is a Triplex composite material composed of aluminum foil double-sidedly bonded glass cloth, including a rigid secondary barrier and a flexible secondary barrier. Wherein the rigid secondary barrier is integrated in the insulating plate parts, and a gap is left between the two insulating plate parts. The flexible secondary barrier material and the rigid secondary barrier will be fully sealed and bonded...

AI Technical Summary

Problems solved by technology

This technical solution has extremely high requirements on the flatness of the surface to be adhered and the flatness of the pressure plate. Once the surface of the pressure plate on the contact surface with the secondary barrier layer is uneven, due to the self-adaptive balance of the air bag or liquid bag, the pressure plate will Inclination occurs to adapt to the unevenness of the surface of the pressure plate, and the inclination of the pressure plate will produce different pressures on the secondary barrier layer, and then there will be excessive local pressure and the glue layer will be squeezed out, and local lack of glue will occur. Formation of degumming defects;

[0005] However, the small deformation caused by the uncontrollable moisture of the pressure plate made of plywood, or the unevenness of the hot-pressed secondary barrier layer will cause the glue layer with a thickness of only about 1mm to be squeezed out in local areas where the pressure is too high. Degumming due to partial lack of glue

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