AUTOCLAVE FOR PRODUCING CELLULAR CONCRETE ARTICLES Russian patent published in 2022 - IPC B28B1/50 B28B5/00 B01J3/04 C04B40/00 

FIELD: building.

SUBSTANCE: invention relates to the building industry, namely, to autoclave apparatuses for producing building materials, and can be used, e.g., in the production of cellular concrete articles by the autoclave technology. Autoclave includes a body forming an internal environment, a unit for setting the pressure P_v(t) in the autoclave, the unit for measuring the pressure P_aut in the autoclave, a vacuum pump, a vacuum pump drive with a power frequency converter. The autoclave herein is additionally equipped with an automatic control system containing a unit for measuring the gas concentration in a vapour-air mixture, an evacuation dynamics adjuster configured for setting the required gas concentration value , and a unit for comparing the pressures P_aut with P_s(t), and . The output of the unit for setting the pressure P_v(t) in the autoclave is therein connected with the first input of the unit for comparing the pressures P_aut with P_v(t), and . The second input whereof is connected with the output of the unit for measuring the pressure P_aut in the autoclave. The values of minimum and maximum pressures are set on the third and fourth inputs at the evacuation stage. The output of the unit for comparing the pressures P_aut with P_v(t), and is connected with the first input of the evacuation dynamics adjuster. The required value of gas concentration in the vapour-air mixture is set on the second input of the evacuation dynamics adjuster. The third input of the evacuation dynamics adjuster is connected with the output of the unit for measuring the gas concentration in the vapour-air mixture. The first output of the evacuation dynamics adjuster is connected with the input of the power frequency converter, the output whereof is connected with the input of the vacuum pump drive, the output whereof is connected with the input of the vacuum pump, wherein the value g_pvs of consumption of the vapour-air mixture is formed at the output of said pump. The value g_pvs of consumption of the vapour-air mixture is supplied to the input of the internal environment of the autoclave, wherein a signal corresponding to the value of pressure P_aut in the autoclave, supplied to the input of the unit for measuring the pressure P_aut in the autoclave, is formed at the first output thereof. A signal corresponding to the gas concentration in the vapour-air mixture is formed at the second output of the internal environment of the autoclave and supplied to the input of the unit for measuring the gas concentration in the vapour-air mixture. A signal supplied to the input of the unit for setting the pressure P_v(t), corresponding to the time of ending of the evacuation stage, is then formed at the second output of the evacuation dynamics adjuster.

EFFECT: increase in the quality, reduced defect rate in the finished articles, reduced power consumption for producing the articles, and stabilised strength of the finished articles.

1 cl, 3 dwg