Patent ID: 9482345
Filing Date: 2016-11-01
CPC Classification: F16J

Claim Text:
1. A sealing system for sealing a rotating shaft projecting through a sealing chamber, comprising: a mechanical seal arrangement, wherein a barrier fluid at a barrier fluid pressure flows through the mechanical seal arrangement; a barrier fluid pressure device which has a pressure piston which is displaceable in a cylinder and by means of which the barrier fluid pressure is set; and a position indicator which is arranged outside the cylinder of the barrier fluid pressure device and is connected to the piston rod, wherein the position indicator is arranged at a spring retainer plate connected to the piston rod; the cylinder has a cylinder end cover and is divided by the pressure piston into a sealing fluid space in which a sealing fluid pressure acts and into a barrier fluid space which is flowed through by the barrier fluid; the barrier fluid space is connected to the mechanical seal arrangement via a feed line for introducing the barrier fluid into the mechanical seal arrangement and a lead-off line for discharging the barrier fluid from the mechanical seal arrangement; the barrier fluid pressure is greater than the sealing fluid pressure of a sealing fluid acting in the sealing chamber; the sealing fluid pressure and an additional force act on the pressure piston of the barrier fluid pressure device for setting the barrier fluid pressure; and the additional force acts on the pressure piston via a piston rod connected to the pressure piston, wherein the cylinder end cover has a passage and the piston rod projects through the barrier fluid space and the passage of the cylinder end cover and thus projects out of the cylinder.