Under-construction mass concrete intelligent water cooling control method and system

Abstract

The invention discloses an under-construction mass concrete intelligent water cooling control method and system. The under-construction mass concrete intelligent water cooling control system comprises a heat exchange device, a heat exchange auxiliary device and a control device; heat exchange pipelines are a plurality of pipelines arranged in the mass concrete, the heat exchange auxiliary device accurately conveys heat exchange medium to the heat exchange device through mixing and turning of hot and cold water, and can recycle the medium which exchanges heat; the control system acquires the temperature information in the concrete and the temperature information of the heat exchange medium in the pipelines, and accurately controls the heat exchange auxiliary device, and the control method can be programmed in advance and input into the control system. The under-construction mass concrete intelligent water cooling control system can measure the internal temperature of the concrete systematically in real time, furthermore, control strategies can be intelligently customized for concrete hydration moulding different phases, and flexible passing-water temperature and flow are worked out according to the internal radial temperature gradient characteristic of the concrete. The under-construction mass concrete intelligent water cooling control system can recycle the medium which exchanges heat, and therefore the utilization efficiency of materials is improved.

Description

Technical field: [0001] The invention relates to concrete cooling, in particular to an intelligent water cooling control method and system for mass concrete under construction. technical background: [0002] Mass concrete will generate a lot of heat during the pouring and molding process. Because the heat on the surface of the concrete is quickly dissipated while the heat is slowly dissipated from the center, an obvious temperature gradient will be formed between the center of the concrete and the surface of the concrete, resulting in corresponding temperature stress, which will cause the concrete to crack Cracks are formed. Corresponding to the technical means of controlling the generation of large-volume concrete cracks, there are some from the design point of view to the construction point of view. Among them, the more common ones are: choosing low-heat of hydration cement and ingredients, optimizing the concrete mix ratio, controlling the concrete pouring temperature, and pou...

AI Technical Summary

Problems solved by technology

Its shortcoming is that, due to the unpredictability of the atmospheric environment and the complexity of heat transfer in water-cooling pipes, the actual water-cooling situation has some changes compared with the results simulated by the finite element method, and the traditional technology has insufficient adjustment ability, so it cannot Immediate correction of the changes will lead to the fact that the actual effect is always far from the planned goal; in addition, based on experience, manual sampling and regulation will cause obvious errors or even mistakes in the operation process, and cause the regulation process to lag and affect The actual control effect; in addition, civil engineering industry standards such as "Technical Specifications for Highway Bridge and Culvert Construction" require that "the temperature difference between the inlet and outlet of the cooling water pipe should be less than or equal to 10°C, and the cooling rate of the pouring body should not be greater than 2.0°C / d", artificial water cooling The means are simple and uncontrollable, far from the actual needs

Images