A Moernized Method of Controlling Heat Flows of Process of Deformation of Textile Materials
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Fibre Chemistry, Vol. 52, No. 2, July, 2020 (Russian Original No. 2, March-April, 2020)
A MOERNIZED METHOD OF CONTROLLING HEAT FLOWS OF PROCESS OF DEFORMATION OF TEXTILE MATERIALS A. E. Polyakov, M. S. Ivanov, E. A. Ryzhkova, and V. I. Dubenkov
UDC 621.798.426-52
The influence of the velocity regimes on the deformation properties of fibrous materials and fabrics in the course of heat treatment is investigated. An improved device for controlling the heat flows that occur in the process of deformation of textile materials is developed and investigated in order to increase the energy efficiency in the use of the heat carrier and energy conservation systems applied for control of complex multidimensional technological plants based on the S-Sh-2-164ShM tenter drier.
The functional design of an automatic control system for regulating the tension and deformation (stretch ratio) of textile materials was modernized by the present authors [1]. The system was created in accordance with the concept of the overall idea of the structure and an investigation of controlled electrotechnical complexes of complicated technological plants [2]. The objective of the modernization was to develop an optimal system for control of heat flows and velocity regimes in the transport and thermomechanical treatment of textile materials that ensures specified parameters of both tension and deformation. The modernized functional diagram (Fig. 1) incorporates the following subjects: – electric drive of ventilator (1) of drying chamber (2) consisting of a pressure regulator (11), air feed regulator (12), and voltage regulator (13), asynchronous motor regulator (14), reducing gear regulator (15), ventilator regulator (19), and heating element regulator (20) – electric drive of discharge pair (24) consisting of a voltage regulator (26), asynchronous motor regulator (27), and reducing gear regulator (28) – electric drive of stretch pair (32) consisting of a voltage regulator (34), asynchronous motor regulator (27), and reducing gear regulator (22) The newly developed device for control of heat flows that arise in the process of deformation of textile materials constitutes a complicated multidimensional controlled electrotechnical complex created on the base of modern unitized energy-conserving a.c. electric drives with microprocessor control and standard industrial sensors of the temperature, pressure, rotational speed, and surface density of textile material. The controlled electrotechnical complex is designed according to a modular principle and satisfies the following basic requirements: – the range of variation of the rotational speed of the working parts must be equal to the range of variation of the productivity – start-up of the electric drive motors must be smooth and last no more than 15 sec – the electric drive must be able to function in two basic regimes: start-stop with assigned rate and in a regime of stabilization of the velocity regimes of the drying chamber – a constant rotational speed of the electric drives with deviation no more
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