Matching the parameters of the air supply hose with the characteristics of the pneumatic machine drive

During the operation of a pneumatic machine, hoses with parameters significantly different from those recommended are often used, which negatively affects the effective characteristics of the pneumatic drive. This article proposes a method for selecting the parameters of the air supply hose that ensure the efficient operation of the pneumatic machine. The replacement of the transcendental equation of a one-dimensional adiabatic gas flow with friction in a cylindrical pipe by an algebraic one with a minimum error is substantiated. Using this technique, it is proved that the value of the coefficient of conservation of total pressure is completely determined by the available pressure drop and does not depend on the length and diameter of the sleeve. The value of the maximum available flow power for any combination of flow rate, length and diameter of the sleeve was determined. As a result, a nomogram has been developed to determine the exact size of the mind, in which the specified drive speed is monitored. It is proved that in order to achieve the maximum drive power, a strictly defined proportion of the available flow power must be spent, while the coefficient of conservation of the total pressure, the pressure in front of the drive and the available enthalpy drop do not depend on the parameters of the sleeve and are determined only by the value of the available pressure drop.