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Reverse pumping tandem process seal arrangement

A process and process fluid technology, applied in the field of reverse pumping serial process seal configuration, which can solve problems such as process fluid leakage

Inactive Publication Date: 2010-12-08
SUNDYNE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tandem process seal configurations may also allow a very small percentage of process fluid to leak from the turbine to atmosphere (Figure 1)

Method used

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  • Reverse pumping tandem process seal arrangement
  • Reverse pumping tandem process seal arrangement
  • Reverse pumping tandem process seal arrangement

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Embodiment Construction

[0009] figure 2 A process fluid communication system 20 is schematically illustrated for a hydrocarbon process such as methane, ethane, ethylene, etc. by way of example only. Process fluid communication system 20 utilizes reverse pumping to secondary process seal 22 and transmission case seal 24 . The secondary process seal 22 and transmission case seal 24 of the disclosed non-limiting embodiments may comprise hydraulic dampers manufactured by Rexnord Industries, LLC of Wheeling ILUSA, Wheeling, Illinois, USA. Pad non-contact reverse pumping seal. The secondary process seal 22 and transmission case seal 24 receive a thin film of air or inert gas from a fluid source 26 which communicates through an otherwise normal discharge area, sealing surfaces in a reversed fashion and into the respective transmission case housing 28 and turbine case 30. Turbine housing 30 includes a turbine 34 , such as a pump or compressor system for example only.

[0010] The transmission case seal 2...

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Abstract

The invention provides a reverse pumping tandem process seal arrangement. A process fluid communication system includes a fluid source in communication with a process seal and a gearbox seal to communicate a pumping medium into a turbomachinery housing and a gearbox housing through the process seal and the gearbox seal.

Description

technical field [0001] The present disclosure relates to a mechanical seal arrangement, and more particularly to a reverse pumped in-line process seal arrangement. Background technique [0002] Mechanical seal arrangements are used in a variety of processes to prevent fluid leakage, such as from turbines used to convey process fluids. A turbine typically includes a pump or compressor that includes a shaft driving an impeller. The shaft is driven by the electric motor directly or indirectly through a gearbox from which the shaft extends to the turbine. [0003] Conventional mechanical seal arrangements, while effective, may allow a very small percentage of lubricant to leak from the gearbox to atmosphere. In-line process seal configurations may also allow a very small percentage of process fluid to leak from the turbine to atmosphere (Figure 1). In some cases, this may have environmental implications. Contents of the invention [0004] A process fluid communication syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/08
CPCF16J15/008F02C7/28F16J15/406F02C7/32F01D11/04
Inventor R·P·里克特
Owner SUNDYNE LLC