Installation for high pressure compression with several stages

Abstract

The invention concerns an installation for high pressure compression with several stages, normally used for producing PET bottles. The inventive installation comprises a main pipe (2) emerging in a baffle plate (3), wherein at least two compressors (4, 5) are mounted in series each having its own drive member (9, 10). The installation is equipped with means (7) for determining the pressure at the output of the main pipe (2), said installation being connected to a control box (8). Typically, the control box (8) is connected to at least two of the drive members (9, 10) of the compressors (4, 5) and ensures monitoring of said compressors such that the latter rotate jointly whether charged or uncharged. Thus, the compressors (4, 5) are jointly charged based on the pressure prevailing in the baffle plate (3), such that the charging of the compressor representing the overpressure stage, the compressor(s) of the lower compression stages are automatically and jointly charged.

Description

technical field [0001] [01] The present invention relates to multi-stage high-pressure compression equipment comprising at least two compressors connected in series by a pipeline. Background technique [0002] [02] High-pressure equipment of this type is used, for example, in the field of producing polyethylene terephthalate (PET) bottles, which require the use of compressed gas at pressures in excess of 2000 kPa. [0003] [03] It is known that in order to achieve a gas pressure of 2000 kPa or higher, two volumetric compressors are installed in series, and a first gas reservoir is preset at the outlet of the first compressor, the reservoir The outlet of is connected to the inlet of the second compressor, which is a booster compressor. [0004] [04] At the outlet of the above-mentioned booster compressor, it is generally preferred to preset a second storage, which acts as a buffer for the user network. [0005] [05] In known multi-stage compressors of this type, the driver ...

AI Technical Summary

Problems solved by technology

[0011] [11] Another disadvantage of the known multi-stage compression equipment is that the first reservoir between the two compressors is relatively large in order to prevent the first A reservoir filled with gas is fully consumed before the first compressor is loaded

[0012] [12] Apparently, a large size accumulator of this type pre-installed between the compressors increases the volume of the compression equipment and in fact makes the compression equipment more expensive

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