MULTIPLIER Russian patent published in 2019 - IPC F15B3/00 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in hydraulic test benches, presses and other devices. Multiplier consists of cylinder 1, closed on both sides of upper cover 2 and cover 3, forming low-pressure cavity 4. On upper cover 2 by means of flange 5 and pins 6 cup 7 is fixed, which forms high pressure cavity 8. In cylinder 1 there is piston 9 rigidly connected to one end of rod 10. Piston 9 tightness is ensured by system of seals 11. Rod 10 is tightened by means of chevron seals 12 and system of seals 13. Chevron seals 12 are fixed in shell 7 by means of support ring 14 and pressure ring 15. In end of pressure ring 15 there is groove 16 and in opening of shell 7, along which rod 10 moves, guaranteed gap 17 is provided. On pressure ring 15 seal system 18 is installed, which is fixed on upper cover 2 by split cover 19 by means of screws 20. Between flange 5 and upper cover 2 there is spacer sleeve 21 with groove 22 made in it. Between cover 2 and shell 7 there is gap 23 for removal of possible leaks and for possibility of lifting of chevron seals. Groove 24 is made on upper cover 2. In split cover 19 projection 25 is made, which is inserted into groove 26 made on pressure ring 15.

EFFECT: separation of working cavities for use of different fluids, high reliability, possibility of tightening seals without complete disassembly of multiplier, ease of replacement of seals without mixing of working fluids, ease of replacement of rod guide.

1 cl, 6 dwg