MAIN MACHINE DRIVE SEAL PRESSURE CONTROL SYSTEM AND METHODS FOR CONTROL THEREOF Russian patent published in 2019 - IPC E21C25/00 E21D9/00 

FIELD: machine building.

SUBSTANCE: group of inventions relates to the field of tunnelling machine technologies, and in particular relates to the main machine drive seal pressure control system and methods of its control. Structure of seal of main drive of tunnelling machine is equipped with flowing channel of sealing and flow cooling channel, and pressure control system of seal of main drive includes subsystem of sealing oil pressure control and subsystem of cooling cycle, wherein sealing oil pressure control subsystem is intended to control oil pressure in the seal flow channel, and cooling cycle subsystem is intended for cooling of cooling flow channel. Seal oil pressure control subsystem comprises a first circulation device, a first control device, a first storage device, a first monitoring and display device and a second monitoring and display device, wherein the first circulation device is intended to allow the sealing lubricant flow between the seal flow channel and the first storage device; first control device is intended to control pressure and flow rate of sealing lubricant passing into seal flow channel; and the first and second monitoring and display devices are intended to determine the pressure, temperature and flow rate of the sealing lubricant fed into the sealing flow channel or flowing therefrom.

EFFECT: by means of the system according to the present invention it is possible to increase efficiency and protection against damages of the design of the seal of the main drive.

11 cl, 3 dwg