GEAR FOR AUTOMATIC CONTROL OVER PROCESS OF THERMAL TREATMENT OF PRECAST CONCRETE PRODUCTS
FIELD: construction industry. SUBSTANCE: gear for automatic control over process of thermal treatment of precast concrete products, mainly bridge beams, in steam curing chamber has temperature-sensitive transducers forming two independent control channels connected to inputs of temperature controls...
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| creator | KURAKIN P.P GUGIN I.M STEFANOV A.V KARPOV A.V CHALENKO V.V BREJCHER S.I BAUKIN A.A LITVIN V.K KOROTIN V.N DUDAREV S.V |
| description | FIELD: construction industry. SUBSTANCE: gear for automatic control over process of thermal treatment of precast concrete products, mainly bridge beams, in steam curing chamber has temperature-sensitive transducers forming two independent control channels connected to inputs of temperature controls whose outputs are linked via switching units with magnetic starters to proper electric heaters. Each control channel includes at least seven temperature-sensitive transducers placed in points of beam most stressed thermally and ambient temperature transducer which are connected to inputs of proper programmable thermal control to feed controlling signals to three groups as minimum of heating elements in each channel installed correspondingly in sides and bottom of forms of curing chamber. Heating elements installed in sides heat forms of curing chamber by convective radiation method and heating elements installed in bottom heat forms by convective contact method. Each control channel can be arranged in the form of three independent control subchannels to control temperature in center, right and left points of beam and in bottom of it. Gear for automatic control over process of thermal treatment of precast concrete products is equipped with monitor for visual control over process and/or printer for display of values of temperature. EFFECT: increased quality of manufactured products. 3 cl, 2 dwg |
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SUBSTANCE: gear for automatic control over process of thermal treatment of precast concrete products, mainly bridge beams, in steam curing chamber has temperature-sensitive transducers forming two independent control channels connected to inputs of temperature controls whose outputs are linked via switching units with magnetic starters to proper electric heaters. Each control channel includes at least seven temperature-sensitive transducers placed in points of beam most stressed thermally and ambient temperature transducer which are connected to inputs of proper programmable thermal control to feed controlling signals to three groups as minimum of heating elements in each channel installed correspondingly in sides and bottom of forms of curing chamber. Heating elements installed in sides heat forms of curing chamber by convective radiation method and heating elements installed in bottom heat forms by convective contact method. Each control channel can be arranged in the form of three independent control subchannels to control temperature in center, right and left points of beam and in bottom of it. Gear for automatic control over process of thermal treatment of precast concrete products is equipped with monitor for visual control over process and/or printer for display of values of temperature. 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SUBSTANCE: gear for automatic control over process of thermal treatment of precast concrete products, mainly bridge beams, in steam curing chamber has temperature-sensitive transducers forming two independent control channels connected to inputs of temperature controls whose outputs are linked via switching units with magnetic starters to proper electric heaters. Each control channel includes at least seven temperature-sensitive transducers placed in points of beam most stressed thermally and ambient temperature transducer which are connected to inputs of proper programmable thermal control to feed controlling signals to three groups as minimum of heating elements in each channel installed correspondingly in sides and bottom of forms of curing chamber. Heating elements installed in sides heat forms of curing chamber by convective radiation method and heating elements installed in bottom heat forms by convective contact method. Each control channel can be arranged in the form of three independent control subchannels to control temperature in center, right and left points of beam and in bottom of it. Gear for automatic control over process of thermal treatment of precast concrete products is equipped with monitor for visual control over process and/or printer for display of values of temperature. 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SUBSTANCE: gear for automatic control over process of thermal treatment of precast concrete products, mainly bridge beams, in steam curing chamber has temperature-sensitive transducers forming two independent control channels connected to inputs of temperature controls whose outputs are linked via switching units with magnetic starters to proper electric heaters. Each control channel includes at least seven temperature-sensitive transducers placed in points of beam most stressed thermally and ambient temperature transducer which are connected to inputs of proper programmable thermal control to feed controlling signals to three groups as minimum of heating elements in each channel installed correspondingly in sides and bottom of forms of curing chamber. Heating elements installed in sides heat forms of curing chamber by convective radiation method and heating elements installed in bottom heat forms by convective contact method. Each control channel can be arranged in the form of three independent control subchannels to control temperature in center, right and left points of beam and in bottom of it. Gear for automatic control over process of thermal treatment of precast concrete products is equipped with monitor for visual control over process and/or printer for display of values of temperature. EFFECT: increased quality of manufactured products. 3 cl, 2 dwg</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | PERFORMING OPERATIONS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER TRANSPORTING WORKING CEMENT, CLAY, OR STONE |
| title | GEAR FOR AUTOMATIC CONTROL OVER PROCESS OF THERMAL TREATMENT OF PRECAST CONCRETE PRODUCTS |
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