SU790492A1 - Hydraulic press for making super-high pressures - Google Patents

Description

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From & reteny refers to the technique of physico-chemical studies of high and ultrahigh pressure pressures and can be used to create ultra-high pressures in the apparatus. Piston-cylinder type in the study of solids, synthesis of diamond, borazon. .

A hydraulic press is known for generating ultrahigh pressures in efn piston-cylinder units ij ..

Consistently placed in this cylinder press are the high pressure stages with the cylinder of the iodine holding stage, namely on its piston, causing an increase in the dimensions, and hence the metal intensity of the press.

The aim of the invention is to reduce sweeping capacity and reduce the size of the press.

For this, in a known hydraulic press containing a supporting stage with a cylinder and a high pressure stage in the form of a cylinder with a piston, the cylinder of the supporting stage is movably mounted on the high pressure cylinder, and between them is formed a working chamber divided into forward and reverse cavities

an annular protrusion made on the inner surface of the cylinder of the supporting stage and in contact with the outer surface of the cylinder of the high pressure stage, while the return stroke cavity is connected with the rod cavity 1 of the high pressure stage cylinder through a channel in its wall.

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The drawing shows a schematic press.

The hydraulic press consists of a cylinder supporting stage 1 and a cylinder of high pressure stage 2

15 with p6p4 him 3 and a lid 4, in which there is an opening for the rod 5 of the piston 3. The cylinder of the supporting stage

A movable high-pressure stage 2 cylinder is mounted on the inner surface 6 of the cylinder of supporting stage 1, an annular protrusion 7 is formed. The working chamber is formed by the inner surface of 6 qi: the linder of the supporting stage 1 and the outer surface of cylinder 8 of the high pressure stage 2 and is divided to the protrusion 7 on the cavity 9 forward and the cavity 10 reverse. In the wall

A high-pressure stage II cylinder 30 is filled with a channel 12, by means of which a backward cavity 10 of a cylinder supporting a stage 1 and a rod cavity 13 of a cylinder of a high pressure stage 2 are connected. For supplying the working fluid to the piston cavity 14 in the cylinder of a high pressure stage 2, a channel 15 is made. The working fluid into the forward cavity 9 and the reverse cavity 10 in the supporting stage cylinder are provided with channels 16 and 17, respectively. O-rings are provided for sealing the cylinders.

Hydraulic press works as follows.

In the cavity 9 of the forward stroke of the cylinder supporting the stage 1 through the channel 16 is fed under pressure working fluid, the cylinder supporting Step 1 moves upward, while the working fluid from the cavity 10 of the reverse through the channel 17 goes to the drain.

Then, through the channel 15, the working fluid is supplied to the piston cavity 14 of the cylinder of the high pressure stage 2. The piston 3 moves upwards, the working liquid from the rod cavity 13 through the channel 12 in the wall 11 of the high pressure cylinder 2 and the channel 17 goes to the drain. After the completion of the working cycle, the pressure of the working fluid in both cylinders is released to atmospheric pressure.

The press returns to its original position as follows: the working fluid through the channel 17 under pressure is fed into the cavity 10 of the return stroke of the supporting stage cylinder 1, through the channel 12 the working liquid also enters the rod cavity 13 of the high pressure stage 2 cylinder, the piston 3 of the high pressure stage cylinder 2 and the cylinder of the supporting stage 1 is moved downwards, the channels 16 and 15 are connected to the drain.

The arrangement of the cylinder of the supporting stage movably on the cylinder of the high pressure stage ensures the reduction of the dimensions of the press, which prevents its installation. The high-pressure stage cylinder serves simultaneously as the piston of the supporting cylinder, thereby reducing the metal intensity of the press. In addition, the channel in the cylinder wall of the high pressure stage allows to simplify the design of the press and reduce its metal intensity due to the fact that for supplying the working fluid to the rod cavity of the high pressure stage cylinder, it is not necessary to autonomously supply and perform deep mated channels in the cylinder .

The conditional economic effect from the implementation of the invention will be

5 100 thousand rubles when used in research projects.

Claims (1)

Invention Formula Ultra high pressure hydraulic press c. piston-cylinder-type apparatus containing nofi holding, stage with cylinder and a high pressure stage in the form of a cylinder with a piston, characterized in that, in order to reduce metal consumption and reduce the dimensions of the press, the cylinder supporting steps are movably mounted on a high pressure cylinder, and between them a working chamber is formed, divided into cavities of a DIRECT and reverse stroke by an annular protrusion made on the inner surface of the supporting step and in contact with the outer surface of the cylinder of a high pressure step, while the reverse cavity is connected to the rod cavity cylinder stage high pressure through the channel in its wall. Sources of information taken into account during the examination 1. Tsiklis D.S. Technique of physical and chemical research at high and ultrahigh pressures. M., Himi, 1965, p. 102.: AI tf Yu