SU922382A1 - Device for sealing by viscous liquid - Google Patents

Description

one

Seal refers to the sealing technique. The plunger seals are known, including an annular groove with a floating piston in the cylinder body, connected to a sealing annular gap, and a drive for supplying a sealing fluid 1.

The disadvantage of these devices is the design complexity and low operational reliability.

The purpose of the invention is to simplify the design and increase its reliability.

The goal is achieved by the fact that the device is equipped with a discharge chamber connected by pipelines with annular grooves in the cylinder bodies, and the annular gaps are connected to the discharge chamber.

The drawing shows a device for sealing with a viscous liquid.

The device consists of composite hydraulic cylinders 1 and 2, chambers 3 and 4 with a working fluid with annular recesses 5 and 6, containing cavities with a working fluid 7 and 8 and cavities with condensing fluid. There are also Porschni 14-17, check valves 18 and 19, installed in ipy6o-, wires 20 and 21, plungers 22 and 23 with col2

guard gaps 24 and 25, connected by drain pipes 26 and 27 with the discharge chamber 28, having a cavity with oil 29.

The device works as follows.

In the initial state, the cavities 9-13 are filled with a viscous sealing fluid. The pistons 14 and 17 are in the extreme left and right positions of the B. The cavity 29 is connected to the discharge pipe 10 by the low pressure wire of the main oil pump of the hydraulic system and is kept under pressure constant.

When the hydraulic system is turned on in operation, chambers 3 and 4 are filled under low pressure with a working fluid, such as water, the piston 15 with the plunger 22 begins to move, for example, to the left. The plunger 22 displaces the water from the chamber 3 under high pressure to the high pressure receiver (not shown), and the low pressure water supply pipe is closed by a check valve (not shown). At the same time, the high pressure water acts on Porschen 14 from the side of the cavity 7, the chamber 5 and moves it to the right,

Claims (1)

Claim A device for sealing a viscous fluid of a plunger of a high-pressure cylinder, for example, a multiplier, including an annular groove with a floating piston in the cylinder body, connected to a sealing annular gap between the plunger and the cylinder, characterized in that, in order to simplify the design and increase reliability, it is equipped with a discharge a chamber connected by feeding pipelines through non-return valves with annular grooves, while annular gaps are connected by drain pipelines to the discharge chamber.