Cement electric heating composite template non-corrosive liquid heat-conducting medium and heat preservation control device

Abstract

The invention provides a cement electric heating composite template non-corrosive liquid heat-conducting medium which is formed by stirring sodium molybdate, disodium hydrogen phosphate and water according to the weight ratio of 7: 3: 50, or is formed by stirring sodium molybdate, disodium hydrogen phosphate, triethanolamine and water according to the weight ratio of 1: 1: 0.42: 50. The inventionfurther provides a cement negative temperature hydration reaction remote heat preservation control device which comprises an electric heating composite template, an electric heating belt, temperaturesensors, a temperature analog signal transmitter, an alternating current contactor and a three-phase stepless voltage regulation digital power regulator. The non-corrosive liquid heat-conducting medium is poured into the hollow part of the electric heating composite template, the electric heating belt and the temperature sensors are also arranged in the hollow part of the electric heating composite template, the multiple temperature sensors control heating and heat preservation of the electric heating belt through the temperature analog signal transmitter, the three-phase stepless voltage regulation digital power regulator and the alternating current contactor, so that electric energy is saved, the precision is improved, the temperature required by cement hydration is ensured, and the service life of the electric heating composite template is prolonged.

Description

technical field [0001] The invention relates to a liquid heat-conducting medium and a cement heat preservation and hardening device, in particular to a heat-preservation control device for a non-corrosive liquid heat conduction medium poured into a cement electric heating composite formwork and cement negative temperature hydration reaction. Background technique [0002] As we all know, the cement hydration reaction of reinforced concrete structure, in the case of negative temperature in winter, in order to reach the cement hydration reaction temperature, additional heat preservation and heat storage measures must be taken. This is of great practical significance to the demolition time of the actual concrete structure of the project. [0003] When the external ambient temperature of the poured concrete member is lower than 0°C, most of the water will form a solid state, and when it drops to -15°C, the liquid phase water will no longer exist, and the hydration reaction will s...

AI Technical Summary

Problems solved by technology

However, in the prior art, although the temperature control of the cement hydration and solidification process is carried out by using heating and thermal insulation materials, the dynamic control of the cement hydration process cannot be carried out due to the lack of temperature measurement measures at any time, especially the temperature measurement accuracy is not good. High, multi-point micro-control cannot be implemented, so it affects the quality of concrete setting and hardening, and also wastes manpower management costs and electric energy used for heating and constant temperature

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