EP2864643A1 - Turbomachine et procédé de fonctionnement de ladite turbomachine - Google Patents

Turbomachine et procédé de fonctionnement de ladite turbomachine

Info

Publication number
EP2864643A1
EP2864643A1 EP13745017.7A EP13745017A EP2864643A1 EP 2864643 A1 EP2864643 A1 EP 2864643A1 EP 13745017 A EP13745017 A EP 13745017A EP 2864643 A1 EP2864643 A1 EP 2864643A1
Authority
EP
European Patent Office
Prior art keywords
turbomachine
pressure
gas
process fluid
sgm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP13745017.7A
Other languages
German (de)
English (en)
Inventor
Ludger Alfes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2864643A1 publication Critical patent/EP2864643A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F04D29/104—Shaft sealings especially adapted for elastic fluid pumps the sealing fluid being other than the working fluid or being the working fluid treated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
    • F04D29/124—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps with special means for adducting cooling or sealing fluid

Definitions

  • the invention relates to a turbomachine, in particular a turbocompressor, comprising at least one rotor extending along an axis, comprising at least one axi ale high pressure position, comprising at least one axial low pressure position, wherein a process fluid at the high pressure position has a higher pressure during operation of the turbomachine as at the low pressure position, comprising at least one gas seal sealing a gap between the rotor and a stator of the turbomachine by means of barrier gas, comprising a conditioning module which converts process fluid withdrawn from the high pressure position at a take-off to barrier gas which is supplied to the gas seal barrier gas.
  • the invention comprises a method for operating the turbomachine.
  • Turbomachines in particular turbocompressors for combustible and / or toxic gases are often sealed with dry gas seals, in particular dry gas seals.
  • Compressed pressure outlet of the compressor taken, processed, down in pressure and fed to the gas seals.
  • components for the function processing liquid separation, filtering, heating, pressure regulation. Furthermore, these components are very expensive.
  • the object of the invention is to reduce the capital expenditure for the treatment of the sealing gas for the gas seal.
  • the invention proposes a device of the type mentioned above with the additional features of the characterizing part of claim 1. Furthermore, a method according to claim 5 is proposed for the task solution.
  • the related subclaims each contain advantageous developments of the invention.
  • Directional data such as axial, radial, tangential or circumferential direction always refer to the axis of the rotor of the turbomachine, unless stated otherwise.
  • the claimed treatment module comprises a significant part of the barrier gas treatment from the process fluid to the sealing gas. These include at least the liquid separation or the filtering or the heating or the pressure regulation of the barrier gas. Due to the arrangement according to the invention of the treatment behind the control valve, the components of the treatment module can be designed for a lower pressure and are therefore at least less expensive. In the case of particularly high compressor pressures, procurement problems for these components of the preparation module can be eliminated in this way and special designs can be avoided for this purpose. This results in lower costs, a wider choice of suppliers and shorter delivery times. As an additional positive effect, the hazard potential due to the lower pressure in the treatment module is significantly reduced, which also plays an important role in combustible or toxic gases in terms of cost.
  • the sensor measures either the pressure downstream of the treatment module or a differential pressure via a throttle, so that the mass flow or volume flow of sealing gas to the gas seal is reliably controlled.
  • expedient is located behind the control valve a derivative to a lower pressure level, which can be shut off, for example by a safety valve in the event that located in the line behind the control valve perhaps toxic or flammable process fluid by malfunction of the pressure or differential pressure control the maximum allowable Pressure exceeds and thereby threatens to leak into the environment of the turbomachine.
  • This low pressure level can be, for example, the discharge towards a torch, where the process fluid - if flammable - is flared.
  • control unit comprises a differential pressure transmitter, which regulates a pressure difference between the pressure of the removal of the process fluid and the pressure of the blocking gas downstream of the treatment module to a desired value.
  • This setpoint may be a current set point given by a higher-level control, which depends on the current operating conditions of the turbomachine.
  • the turbomachine has a balancing piston, ie, a step in the rotor R, which ensures by means of a shaft seal that the pressures acting on the gradation on the two sides largely offset or reduce the thrust of the turbomachine in nominal operation.
  • FIG. 1 shows a schematic flowchart representation of the turbomachine or method according to the invention
  • FIG. 1 shows a schematic representation of the turbomachine TM according to the invention or of the method according to the invention as a flow chart.
  • the turbomachine TM in the embodiment is formed as a turbocompressor CO having a rotor R extending along an axis X. Along the axis X, the turbocompressor CO has a high-pressure position HPS and a low-pressure position LPS at which a process fluid PF is under a higher pressure or at a lower pressure in the flow path of the turbomachine TM during operation.
  • a non-illustrated gap GP is sealed by means of gas seals DGS on both sides of the turbomachine.
  • the turbomachine TM or the stator CAS which is designed as a housing, has an inlet INL and an outlet OTL, wherein a process fluid PF is conveyed through the inlet INL into the turbomachine for compression up to the outlet OTL at a higher pressure level Turbomachine leaves.
  • a removal EX of the process fluid PF is provided, which process fluid PF is passed from this axial high-pressure position HPS by means of a line PIP1 the turbomachine TM to a control valve CV.
  • the pressure of the process fluid PF is lowered and the process fluid is fed to a treatment module SGM for the treatment of the process fluid PF to the sealing gas SG.
  • the sealing gas SG is fed to the gas seals DGS by means of a second pipeline PIP2.
  • a control unit CU controls the position of the control valve CV such that the extraction pressure is lowered so far that adjusts the desired sealing gas pressure SG to the gas seals DGS.
  • the control unit CU a differential pressure transmitter DPT, which as a sensor SEN compares the pressure behind the preparation module SGM with the pressure at a balancing piston BP of the turbomachine TM and regulates its dependence by controlling the control valve CV the pressure of the sealing gas SG in front of the gas seals DGS.
  • the second line PIP2 and the respective supply line to the gas seals DGS diaphragms TH are provided, at which a differential pressure drops.
  • the pressure of the sealing gas SG is adjusted by means of the control valve CV such that the pressure drop across the orifices TH and the chamber of the balancing piston PB is constantly adjusted to a specific target value.
  • Safety valve SV downstream of the control valve CV provided, which opens from a set pressure.
  • the response pressure is slightly above the maximum pressure setting during operation behind the control valve CV.
  • the components of pipelines PIP1, PIP2, the processing module SGM, the control valve CV and the orifices TH are designed at least to the set pressure of the safety valve SV.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne une turbomachine (TM), en particulier un turbocompresseur (CO). Cette turbomachine comprend au moins un rotor (R) qui s'étend le long d'un axe (X), au moins un joint à gaz (DGS) qui, au moyen d'un gaz d'étanchéité (SG), étanchéifie une fente (GP) entre le rotor (R) et un stator (CAS) de la turbomachine (TM). Elle comprend un module de préparation (SGM), lequel prépare un fluide de traitement (PF) prélevé sur un prélèvement (EX) et provenant de la position haute pression(HPS) pour en faire un gaz d'étanchéité (SG), lequel gaz d'étanchéité (SG) est amené au joint à gaz (DGS). L'invention vise la réduction des dépenses d'investissement pour la préparation du gaz d'étanchéité pour le joint à gaz. A cet effet, une soupape de régulation (CV) est disposée dans une première conduite (PIP1) de la turbomachine (TM), laquelle conduite achemine le fluide de traitement (PF) de la position haute pression (HPS) au module de préparation (SGM). La turbomachine (TM) comprend une unité de régulation (CU) qui commande la soupape de régulation (CV). La turbomachine (TM) comprend un capteur (SEN) dans une deuxième conduite (PIP2) pour le gaz d'étanchéité (SG), entre le module de préparation (SGM) et le joint à gaz (DGS), lequel capteur détermine une pression (PSG) du gaz d'étanchéité (SG) entre le module de préparation (SGM) et le joint à gaz (DGS). L'unité de régulation (CU) est réalisée de telle manière que la soupape de régulation (CV) régule la pression ou le débit volumique mesuré(e) par le capteur (SEN).
EP13745017.7A 2012-09-06 2013-07-25 Turbomachine et procédé de fonctionnement de ladite turbomachine Ceased EP2864643A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012215823 2012-09-06
PCT/EP2013/065685 WO2014037149A1 (fr) 2012-09-06 2013-07-25 Turbomachine et procédé de fonctionnement de ladite turbomachine

Publications (1)

Publication Number Publication Date
EP2864643A1 true EP2864643A1 (fr) 2015-04-29

Family

ID=48916014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13745017.7A Ceased EP2864643A1 (fr) 2012-09-06 2013-07-25 Turbomachine et procédé de fonctionnement de ladite turbomachine

Country Status (6)

Country Link
US (1) US20150322959A1 (fr)
EP (1) EP2864643A1 (fr)
CN (1) CN104603467B (fr)
IN (1) IN2015DN00715A (fr)
RU (1) RU2623323C2 (fr)
WO (1) WO2014037149A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014211690A1 (de) 2014-06-18 2015-12-24 Siemens Aktiengesellschaft Fluidenergiemaschine, Verfahren zum Betrieb
DE102017223791A1 (de) 2017-12-27 2019-06-27 Siemens Aktiengesellschaft Wellendichtungsanordnung einer Turbomaschine, Turbomaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053389A1 (fr) * 2010-10-22 2012-04-26 株式会社神戸製鋼所 Compresseur

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JPS4934211B1 (fr) * 1970-12-16 1974-09-12
US4595340A (en) * 1984-07-30 1986-06-17 General Electric Company Gas turbine bladed disk assembly
CZ48394A3 (en) * 1993-03-04 1994-09-14 Abb Management Ag Radial-flow compressor with a flow-stabilizing casing
RU2034175C1 (ru) * 1993-03-11 1995-04-30 Центральный институт авиационного моторостроения им.П.И.Баранова Турбокомпрессор
ES2256142T3 (es) * 2001-11-23 2006-07-16 Siemens Aktiengesellschaft Metodo para la regulacion continua de una posicion de una valvula de regulacion.
ITMI20022401A1 (it) * 2002-11-13 2004-05-14 Nuovo Pignone Spa Dispositivo di circolazione gas di sbarramento per tenute meccaniche
FR2882112B1 (fr) * 2005-02-16 2007-05-11 Snecma Moteurs Sa Prelevement en tete des roues mobiles de compresseur haute pression de turboreacteur
EP2146057B1 (fr) * 2008-07-16 2011-09-07 Siemens Aktiengesellschaft Dispositif de commande hydraulique d'un moteur à turbine à gaz et d'une chambre de combustion
DE102009017614A1 (de) * 2009-04-16 2010-10-28 Siemens Aktiengesellschaft Mehrstufiger Turboverdichter
JP5990520B2 (ja) * 2010-07-26 2016-09-14 ドレッサー ランド カンパニーＤｒｅｓｓｅｒ−Ｒａｎｄ Ｃｏｍｐａｎｙ 高圧圧縮系での封止ガス消耗の削減および調定圧力低減のための方法及びシステム
CA2843799A1 (fr) * 2011-08-03 2013-02-07 John Crane Inc. Systeme de surveillance et de commande de gaz d'etancheite

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053389A1 (fr) * 2010-10-22 2012-04-26 株式会社神戸製鋼所 Compresseur
US20130195649A1 (en) * 2010-10-22 2013-08-01 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014037149A1 *

Also Published As

Publication number Publication date
WO2014037149A1 (fr) 2014-03-13
CN104603467B (zh) 2016-06-29
RU2623323C2 (ru) 2017-06-23
IN2015DN00715A (fr) 2015-07-10
US20150322959A1 (en) 2015-11-12
CN104603467A (zh) 2015-05-06
RU2015112106A (ru) 2016-10-27

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