Weather resistance performance testing machine for external wall insulation system

Abstract

The invention relates to a weather resistance detector for an external heat insulation system of an exterior wall. The weather resistance detector comprises an instrument control system, a recording and electrical control system, an environmental cabinet, a humiture measurement system, a dehumidifying and drying system, an air refrigeration system, an air heating system and a circulated water cooling and sprinkling system, wherein an observation device is further mounted in the environmental cabinet, and an observation frame is mounted on the observation device and can move up, down, left and right according to actual need. According to the weather resistance detector, durability detection can be carried out in the environmental cabinet through artificially simulating climatic conditions such as hot, cold and rainwater of natural environments, the observation device in the environmental cabinet can work in severe environments such as hot, cold and rainwater environments and can be used for carrying out real-time observation and subarea photographing on entire finishing coats, and then, a plurality of subarea images are synthesized into one image by adopting an MATLAB software image processing tool, so that deterioration characteristic symptoms such as cracking, bubbling and spalling of the finishing coats can be accurately and timely snapshot, and the working efficiency can be obviously increased.

Description

technical field [0001] The invention relates to a weather resistance testing device for thermal insulation materials, in particular to a weather resistance testing machine for large-area external wall thermal insulation systems. Background technique [0002] The external thermal insulation system of external walls is composed of thermal insulation layer, finishing layer and fixing materials (adhesives, anchors, etc.) and is suitable for the general term of non-load-bearing thermal insulation structures installed on the outer surface of external walls. After the external wall thermal insulation system has passed the weather resistance test, there must be no damage such as blistering or peeling of the facing layer, hollowing or falling off of the facing layer, and no water seepage cracks. Aiming at the laboratory testing equipment for the durability performance of the current building energy-saving external wall thermal insulation system under artificially simulated natural en...

AI Technical Summary

Problems solved by technology

Aiming at the laboratory testing equipment for the durability performance of the current building energy-saving external wall thermal insulation system under artificially simulated natural environments such as high temperature, cold, rain and other climate conditions for a long time, the existing "External Wall External Thermal Insulation Engineering Technical Regulations" (JGJ 144-2004), when carrying out the weather resistance simulation test of the external wall thermal insulation system, it is required to observe whether there are cracks, hollowing, or falling off of the test wallboard after every 4 high temperature-watering cycles and every 1 heating-freezing cycle and other degradation phenomena, but at present, the naked eye and auxiliary equipment (crack observer, camera) are basically used for observation. The observation results are greatly affected by subjective and human judgment factors. It is difficult to accurately observe the deformation and damage phenomena (crack cracking, expansion), which makes it difficult to quantitatively analyze the progressive deformation and damage of the facing layer of the external wall thermal insulation system, and even affects the weather resistance classification of the external wall thermal insulation system, thus affecting the experimental results

At present, there are also some automatic inspection machines, but the camera is installed outside the environmental chamber. Although real-time observation can be realized, due to the limitation of the observation area, it is generally not larger than 1 meter * 1 meter

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