[go: up one dir, main page]

WO1998015793A1 - Condenser system for a steam power plant - Google Patents

Condenser system for a steam power plant Download PDF

Info

Publication number
WO1998015793A1
WO1998015793A1 PCT/EP1997/005487 EP9705487W WO9815793A1 WO 1998015793 A1 WO1998015793 A1 WO 1998015793A1 EP 9705487 W EP9705487 W EP 9705487W WO 9815793 A1 WO9815793 A1 WO 9815793A1
Authority
WO
WIPO (PCT)
Prior art keywords
condenser
steam
cooling
power plant
water pipe
Prior art date
Application number
PCT/EP1997/005487
Other languages
French (fr)
Inventor
Wolfgang Henselak
Gerald Twarloh
Michael Wurm
Dennis Ham
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998015793A1 publication Critical patent/WO1998015793A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium

Definitions

  • the invention relates to a condenser system for a steam power plant .
  • a condenser system is typically built into a water-steam loop in a steam power plant having a steam turbine. Such a condenser system serves to condense out steam that is flowing out of the turbine. The resultant condensate remains in the water-steam loop and is later optionally reheated. The condenser system extracts heat from the water-steam loop and is cooled through the use of a coolant.
  • condenser system Due to stringent demands for reliability, such a condenser system is typically constructed redundantly in every respect. Multiple condenser units are therefore provided.
  • the cooling medium is delivered to each of the condenser units through their own lines by their own pumps.
  • a condenser system for a steam power plant comprising a condenser unit; a single cooling-water pipe penetrating the condenser unit; and a redundantly constructed pump system for feeding the single cooling-water pipe.
  • the invention is based on the concept that in order to simplify construction, reduce costs and simplify assembly, the redundancy of components should be reduced to whatever is indispensably necessary.
  • the concept on which the invention is based takes into account the fact that active elements, such as pumps, are much more vulnerable to malfunction than passive elements, such as heat exchangers and supply lines.
  • the pump system is therefore constructed to be redundant, while only a single condenser unit is provided, which is also penetrated by only a single cooling-water pipe.
  • both pumps can advantageously communicate with the single, common cooling-water pipe over the shortest possible route.
  • the pumps are expediently individually disconnectable from the cooling-water pipe through the use of valves .
  • the condenser has only a single cooling-water inlet and a single cooling-water outlet connected to the single cooling- water pipe.
  • Fig. 1 is a diagrammatic, top-plan view of one exemplary embodiment of a steam turbine system according to the invention
  • Fig. 2 is a side-elevational view of the steam turbine system of Fig. 1, as seen along a line II-II of Fig. 1, in the direction of the arrows;
  • Fig. 3 is a diagrammatic and schematic view of a condenser system with two pumps.
  • a steam turbine system 1 which includes a steam turbine 2 with a high-pressure and medium-pressure portion 2a and a low-pressure portion 2b, to which a condenser 4 is connected radially on the downstream side.
  • a preheater unit 6 is disposed on a side of the steam turbine 2 facing the condenser 4.
  • a generator 8 located in the vicinity of the steam turbine 2 can be driven through a steam turbine shaft 7.
  • Both the high-pressure and medium-pressure portion 2a and the low-pressure portion 2b of the steam turbine 2 as well as the condenser 4 and the preheater unit 6 and the generator 8 are each constructed as a module and are moreover disposed flush with the ground.
  • the term "module” should be understood in this case to mean a connectable, transportable component that can be pre-assembled.
  • Each of the aforementioned modules is mounted on a sledlike structure or skid in a non-illustrated manner and can thus be shifted about especially easily.
  • the steam turbine system 1 is part of a non-illustrated steam power plant having a high-pressure preheater, in the form of a module 9, which is likewise disposed flush with the ground on the side of the steam turbine 2 facing the condenser 4.
  • the steam turbine system 1 is connected to a once-through steam generator of the steam power plant in a non-illustrated manner.
  • One such once-through steam generator is described, for instance, in co-pending U.S. Patent Application Serial
  • the steam turbine system 1 may also be connected to a drum-type steam generator.
  • the steam turbine 2, the condenser 4, the preheater unit 6, the generator 8 and the module 9 are disposed in a common power house or turbine hall 10.
  • the generator 8 is connected through a supply line system 11, into which a switch system 12 is incorporated, to a generator transformer 13 which is disposed outside the turbine hall 10 and which serves to transform electrical voltage furnished by the generator 8 to a higher level .
  • Fig. 2 is a side view of the turbine hall 10, showing the disposition of the steam turbine 2, the condenser 4 and the preheater unit 6 flush with the floor.
  • the condenser 4 is radially connected to the steam turbine 2 on the downstream side.
  • the condenser 4, which is constructed as a module, includes a first condenser element 4a and a second condenser element 4b located above the first. An especially space- saving, compact construction is thus achieved.
  • the module 9 is also mounted on a sled structure or skid.
  • the condenser 4 is part of a condenser system 20 having a cooling pump system 21 which includes two pumps 22, 24.
  • the condenser 4 In order to provide cooling for the condenser 4, the condenser 4 is penetrated by a cooling-water pipe 26, which enters the condenser 4 in a cooling-water inlet 28 and leaves the condenser at a cooling-water outlet 30. Expansion elements 32 which are also provided compensate for thermal expansion of the cooling-water pipe 26.
  • the cooling-water pipe 26 is acted upon through the use of the pump system 21 by a cooling medium, such as sea water or fresh water from a still or flowing body of water.
  • a cooling medium such as sea water or fresh water from a still or flowing body of water.
  • the pump system 21 is constructed redundantly, so that in the illustrated embodiment, the operation of one of the pumps 22, 24 is adequate to operate the condenser 4.
  • Each of the pumps 22, 24 can be disconnected from or connected to the cooling- water pipe 26 through the use of a respective valve 34, 36.
  • the cooling medium is released at an end 38 of the cooling-water pipe 26, or in other words it is returned, for instance, to an open body of water.
  • the cooling-water pipe 26 has a filter unit 40, in which debris can be filtered out of or separated from the cooling medium.
  • the cooling-water pipe 26 also has a cleaning device 42, which includes a first station 44 for introducing cleaning bodies upstream of the cooling-water inlet 28 and a second station 46 for removing the cleaning bodies after they have passed through the condenser 4.
  • the pipes of the condenser 4 are made of a titanium alloy, which is especially resistant to corrosion or other harmful factors. This further reduces the vulnerability of the condenser 4 to malfunction, so that despite the lack of redundancy, safe and reliable functioning is assured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

A condenser system (20) for a steam power plant includes a condenser (4) penetrated by a single cooling-water pipe (26) that can be fed through a redundantly constructed pump system (21), in order to simplify construction and assembly.

Description

CONDENSER SYSTEM FOR A STEAM POWER PLANT
Background of the Invention: Field of the Invention: The invention relates to a condenser system for a steam power plant .
A condenser system is typically built into a water-steam loop in a steam power plant having a steam turbine. Such a condenser system serves to condense out steam that is flowing out of the turbine. The resultant condensate remains in the water-steam loop and is later optionally reheated. The condenser system extracts heat from the water-steam loop and is cooled through the use of a coolant.
Due to stringent demands for reliability, such a condenser system is typically constructed redundantly in every respect. Multiple condenser units are therefore provided. The cooling medium is delivered to each of the condenser units through their own lines by their own pumps.
Summary of the Invention:
It is accordingly an object of the invention to provide a condenser system for a steam power plant, which overcomes the hereinafore-mentioned disadvantages of the heretofore-known devices of this general type, which is simple in structure and which can be assembled fast and at little effort or expense.
With the foregoing and other objects in view there is provided, in accordance with the invention, a condenser system for a steam power plant, comprising a condenser unit; a single cooling-water pipe penetrating the condenser unit; and a redundantly constructed pump system for feeding the single cooling-water pipe.
The invention is based on the concept that in order to simplify construction, reduce costs and simplify assembly, the redundancy of components should be reduced to whatever is indispensably necessary.
Since fully redundant condenser systems in which each element is present multiple times are known in the prior art, it would be conceivable to dispense with any parts that are not absolutely necessary for the function of the condensation process, and thus to avoid any redundancy at all.
However, the concept on which the invention is based takes into account the fact that active elements, such as pumps, are much more vulnerable to malfunction than passive elements, such as heat exchangers and supply lines. In the condenser system of the invention, the pump system is therefore constructed to be redundant, while only a single condenser unit is provided, which is also penetrated by only a single cooling-water pipe.
Only the pump system is made redundant, and thus individual parts of the pump system, such as pumps or pump drives, can be taken out of operation for repair or maintenance. Both pumps can advantageously communicate with the single, common cooling-water pipe over the shortest possible route. Moreover, the pumps are expediently individually disconnectable from the cooling-water pipe through the use of valves .
In accordance with a concomitant feature of the invention, the condenser has only a single cooling-water inlet and a single cooling-water outlet connected to the single cooling- water pipe.
Other features which are considered as characteristic for the invention are set forth in the appended claims.
Although the invention is illustrated and described herein as embodied in a condenser system for a steam power plant, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
Brief Description of the Drawings:
Fig. 1 is a diagrammatic, top-plan view of one exemplary embodiment of a steam turbine system according to the invention;
Fig. 2 is a side-elevational view of the steam turbine system of Fig. 1, as seen along a line II-II of Fig. 1, in the direction of the arrows; and
Fig. 3 is a diagrammatic and schematic view of a condenser system with two pumps.
Description of the Preferred Embodiments Referring now in detail to the figures of the drawings, in which identical elements are provided with the same reference numerals, and first, particularly, to Fig. 1 thereof, there is seen a steam turbine system 1 which includes a steam turbine 2 with a high-pressure and medium-pressure portion 2a and a low-pressure portion 2b, to which a condenser 4 is connected radially on the downstream side. A preheater unit 6 is disposed on a side of the steam turbine 2 facing the condenser 4. A generator 8 located in the vicinity of the steam turbine 2 can be driven through a steam turbine shaft 7.
Both the high-pressure and medium-pressure portion 2a and the low-pressure portion 2b of the steam turbine 2 as well as the condenser 4 and the preheater unit 6 and the generator 8 are each constructed as a module and are moreover disposed flush with the ground. The term "module" should be understood in this case to mean a connectable, transportable component that can be pre-assembled. Each of the aforementioned modules is mounted on a sledlike structure or skid in a non-illustrated manner and can thus be shifted about especially easily.
The steam turbine system 1 is part of a non-illustrated steam power plant having a high-pressure preheater, in the form of a module 9, which is likewise disposed flush with the ground on the side of the steam turbine 2 facing the condenser 4. The steam turbine system 1 is connected to a once-through steam generator of the steam power plant in a non-illustrated manner. One such once-through steam generator is described, for instance, in co-pending U.S. Patent Application Serial
No. (Attorney's Docket No. 5796) filed concurrently with the instant application, entitled "Modular Boiler" and having the same assignee. Alternatively, the steam turbine system 1 may also be connected to a drum-type steam generator. The steam turbine 2, the condenser 4, the preheater unit 6, the generator 8 and the module 9 are disposed in a common power house or turbine hall 10.
The generator 8 is connected through a supply line system 11, into which a switch system 12 is incorporated, to a generator transformer 13 which is disposed outside the turbine hall 10 and which serves to transform electrical voltage furnished by the generator 8 to a higher level .
Fig. 2 is a side view of the turbine hall 10, showing the disposition of the steam turbine 2, the condenser 4 and the preheater unit 6 flush with the floor. The condenser 4 is radially connected to the steam turbine 2 on the downstream side. The condenser 4, which is constructed as a module, includes a first condenser element 4a and a second condenser element 4b located above the first. An especially space- saving, compact construction is thus achieved.
The preheater unit 6, which is constructed as a module, includes a number of preheater elements 15 disposed in a common support stand or heater rig 14. Each preheater element 15 can be acted upon with bled steam A from the steam turbine 2 through a bled steam duct system 16. The pressure and temperature of the bled steam A are functions of the location, wherever it is, at which the steam turbine 2 is bled. Each preheater element 15 is constructed for a specific pressure range of the bled steam A. Placing the preheater elements 15 in the common heater rig 14 makes it possible to prefabricate the preheater unit 6 as a module. This makes the effort and expense of on-site assembly especially low. In order to facilitate assembly of the steam turbine system 1 even further, the module 9 is also mounted on a sled structure or skid. As is schematically and diagrammatically shown in Fig. 3, the condenser 4 is part of a condenser system 20 having a cooling pump system 21 which includes two pumps 22, 24.
In order to provide cooling for the condenser 4, the condenser 4 is penetrated by a cooling-water pipe 26, which enters the condenser 4 in a cooling-water inlet 28 and leaves the condenser at a cooling-water outlet 30. Expansion elements 32 which are also provided compensate for thermal expansion of the cooling-water pipe 26.
The cooling-water pipe 26 is acted upon through the use of the pump system 21 by a cooling medium, such as sea water or fresh water from a still or flowing body of water. The pump system 21 is constructed redundantly, so that in the illustrated embodiment, the operation of one of the pumps 22, 24 is adequate to operate the condenser 4. Each of the pumps 22, 24 can be disconnected from or connected to the cooling- water pipe 26 through the use of a respective valve 34, 36.
Once it has passed through the condenser 4, the cooling medium is released at an end 38 of the cooling-water pipe 26, or in other words it is returned, for instance, to an open body of water.
The cooling-water pipe 26 has a filter unit 40, in which debris can be filtered out of or separated from the cooling medium.
The cooling-water pipe 26 also has a cleaning device 42, which includes a first station 44 for introducing cleaning bodies upstream of the cooling-water inlet 28 and a second station 46 for removing the cleaning bodies after they have passed through the condenser 4.
The pipes of the condenser 4 are made of a titanium alloy, which is especially resistant to corrosion or other harmful factors. This further reduces the vulnerability of the condenser 4 to malfunction, so that despite the lack of redundancy, safe and reliable functioning is assured.

Claims

We claim :
1. A condenser system for a steam power plant, comprising:
a condenser;
a single cooling-water pipe penetrating said condenser; and
a redundantly constructed pump system for feeding said single cooling-water pipe.
2. The condenser system according to claim 1, wherein said condenser has only a single cooling-water inlet and a single cooling-water outlet connected to said single cooling-water pipe.
PCT/EP1997/005487 1996-10-08 1997-10-07 Condenser system for a steam power plant WO1998015793A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72718296A 1996-10-08 1996-10-08
US08/727,182 1996-10-08

Publications (1)

Publication Number Publication Date
WO1998015793A1 true WO1998015793A1 (en) 1998-04-16

Family

ID=24921659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/005487 WO1998015793A1 (en) 1996-10-08 1997-10-07 Condenser system for a steam power plant

Country Status (1)

Country Link
WO (1) WO1998015793A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881548A (en) * 1971-07-14 1975-05-06 Westinghouse Electric Corp Multi-temperature circulating water system for a steam turbine
US4187146A (en) * 1973-07-11 1980-02-05 Westinghouse Electric Corp. Reduction of radioactive emissions from nuclear-reactor plant
JPS6152586A (en) * 1984-08-23 1986-03-15 Hitachi Ltd condenser cooling system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881548A (en) * 1971-07-14 1975-05-06 Westinghouse Electric Corp Multi-temperature circulating water system for a steam turbine
US4187146A (en) * 1973-07-11 1980-02-05 Westinghouse Electric Corp. Reduction of radioactive emissions from nuclear-reactor plant
JPS6152586A (en) * 1984-08-23 1986-03-15 Hitachi Ltd condenser cooling system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
M.B. DEVEREUX: "Combined condensor cooling water systems", COMBUSTION, vol. 40, no. 11, May 1969 (1969-05-01), NEW YORK, pages 27 - 31, XP002054220 *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 211 (M - 501) 24 July 1986 (1986-07-24) *

Similar Documents

Publication Publication Date Title
US6920760B2 (en) Device and method for preheating combustibles in combined gas and steam turbine installations
RU2152527C1 (en) Method of operation of gas-and-steam turbine plant and plant operating according to this method
US6983585B2 (en) Combined cycle plant
JP4191894B2 (en) Method of operating gas / steam combined turbine facility and gas / steam combined turbine facility for implementing the method
US5329771A (en) Method for securing the lubrication of bearings in a hermetic high-speed machine
JP2009092372A (en) Supercritical steam combined cycle and its method
EP3047210B1 (en) Flue gas heat recovery integration
IE902996A1 (en) Deaerator heat exchanger for combined cycle power plant
CN101379272B (en) Power station equipment
CN101893229A (en) Be used to operate the method and system of steam generating equipment
EP0618997B1 (en) Steam system in a multiple boiler plant
US6029454A (en) Steam-turbine plant
JP3679094B2 (en) Operation method and equipment of gas / steam combined turbine equipment
RU2107826C1 (en) Steam-gas plant with deaerator-evaporator
WO1998015793A1 (en) Condenser system for a steam power plant
CN100404799C (en) steam turbine equipment
JP4090584B2 (en) Combined cycle power plant
JP3222035B2 (en) Double pressure type waste heat recovery boiler feeder
WO1998015777A1 (en) Steam power plant
US5519998A (en) Apparatus for introducing feed water into a combined-cycle power station
JP2002371807A (en) Turbine equipment and steam converting device
JP2923122B2 (en) Drain recovery equipment for nuclear power plants
EP0704860A1 (en) A steam condenser with natural circulation for nuclear reactor protection systems
EP1429074B1 (en) System and method for feeding water for steam turbine plant
CN113175366B (en) Bus pipe thermal system for realizing machine-furnace decoupling and operation method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR CA CN ID JP KR KZ MX RU TR UA US VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998517169

Format of ref document f/p: F