Sealing system for reciprocating piston rod of reciprocating compressor

Abstract

The invention provides a gas-proof sealing system, which can retain the functions in an at least enough way even if one component (e.g. hydraulic supplying or sealing element) is faulty and prevent a compressor from being down. A scraper recess (15) is equipped on the sealing system (1) end located on a crankcase side. A gas-proof scraping ring (16) is equipped inside the scraper recess. A sealing ring recess (17) is equipped on the sealing system (1) end (Z) located on the cylinder side. A sealing ring device (18) is equipped inside the sealing ring recess. A barrier recess (14) is located axially between the scraper recess (15) and the sealing ring recess (17). A discharge pipeline (20) is equipped inside the sealing system (1). The discharge pipeline is communicated with the space between the barrier recess (14) and the scraper recess (15).

Description

technical field [0001] The invention relates to an airtight sealing system for a reciprocating piston rod of a piston compressor, wherein a first sealing element and a second sealing element are arranged in the sealing system, the two sealing elements are arranged in the sealing system In the blocking cavity, and set the input pipeline for the sealing medium leading into the blocking cavity. Background technique [0002] In certain uses of compressors, such as on compression stations for transporting natural gas, it has become more and more important to minimize the leakage of the compressed medium (such as natural gas) from the compressor for reasons of environmental protection ( Also due to increasingly stringent regulations). This leakage essentially occurs along the reciprocating piston rod, which is usually sealed relative to the compressor housing by means of so-called long-known sealing systems. The high requirements for tightness must therefore be met by convention...

AI Technical Summary

Problems solved by technology

If the hydraulic supply blocked by the sealing medium is interrupted, the sealing function of the sealing system is no longer there, and the compressed medium may enter the crankcase from the cylinder and from the crankcase into the surrounding environment, which will also cause the compressor to be forced to stop

Due to the above problems, the hydraulic supply cannot be simply cut off in the event of a fault, so the entire compressor must be stopped for maintenance and troubleshooting in the event of a fault

This leads to production stoppages, which in practice can cause large economic losses

[0004] A further problem of WO 2010 / 079227 A1 is that in order to reliably recover the sealing medium, a complex and tedious design of the various sealing elements and of the high-pressure and discharge lines is required, as shown for example in FIG. 6 of WO 2010 / 079227 A1

This makes such an arrangement and above all the retrofitting of existing compressors very complex and therefore economically uneconomical

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