US3923009A - Moisture separating and steam reheating apparatus - Google Patents

Moisture separating and steam reheating apparatus Download PDF

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Publication number
US3923009A
US3923009A US441798A US44179874A US3923009A US 3923009 A US3923009 A US 3923009A US 441798 A US441798 A US 441798A US 44179874 A US44179874 A US 44179874A US 3923009 A US3923009 A US 3923009A
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United States
Prior art keywords
steam
moisture
shell structure
moisture separator
outlets
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Expired - Lifetime
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US441798A
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English (en)
Inventor
Akio Sohma
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Hitachi Ltd
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Hitachi Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • F22B37/266—Separator reheaters

Definitions

  • the present invention relates to moisture separating and steam reheating apparatus adapted to reheat actuating steam after moisture has been separated therefrom, especially to a moisture separating and steam reheating apparatus that can be assembled in an atomic power plant containing a steam turbine plant.
  • a moisture separator may be disposed within a communicating conduit between a high pressure turbine and a low pressure turbine to remove the moisture in the steam, and further that a steam reheater may be connected with the moisture separator to reheat the steam by using high temperature steam as the heat exchange fluid, which can be obtained as main steam or the like.
  • an apparatus may include an elongated tubular shell structure, an elongated moisture separator disposed in the tube shell structure, a moisture/steam collection space and a steam collection space, a steam inlet disposed on an end closure member of said tubular shell and communicating with said moisture/steam collection space, a steam outlet communicating with said steam collection space, a moisture drain outlet communicating with said moisture/steam collection space, a steam reheater disposed in said steam collection space and including a plurality of elongated tubes.
  • Another object of the present invention is to provide a moisture separating and steam reheating apparatus that will have a plurality of steam inlets and outlets permitting this straight flow across the shell structure.
  • the present invention will treat a large quantity of moist steam at a high efficiency without increasing the dimensions of the shell, with respect to the prior art.
  • actuating steam may be expanded through turbines without a high concentration of moisture that would be harmful to the steam turbines, while at the same time keeping the pressure loss of the actuating steam small.
  • a moisture separator and steam reheater that comprises an elongated tubular shell with closure members, a plurality of moist actuating steam inlets having their flow axes extending radially through one side wall of the shell, a plurality of reheated actuating steam outlets being mounted on the opposite side wall of the shell with their flow axes extending radially opposite from the inlet flow axes, flow distribution or rectifying means substantially elongated from one closure member to another closure member and disposed adjacent and in parallel with the row of inlets, a moisture separator adjacent to and in parallel with the rectifying means along a major portion of the length thereof, said moisture separator dividing the interior of the shell into a moisture/steam collection space and a steam collection space, a steam reheater disposed in said steam collection space and including a plurality of elongated tubes extending in parallel to said moisture separator and along a major portion of the length thereof, whereby the steam supplied from the inlets flows substantially in a straight line to
  • FIG. 1 is a schematic view of an overall steam power plant system employing the present invention
  • FIG. 2 is a perspective view, with portions broken away and in cross section, of the moisture separator and steam reheater apparatus according to the present invention
  • FIG. 3 is a longitudinal cross sectional view along the axis of the device of FIG. 2;
  • FIG. 4 is a transverse cross sectional view taken on line IV-IV of FIG. 3;
  • FIG. 5 is an enlarged view of a part of the moisture separator showing the plurality of wavy plates contained therein;
  • FIG. 6 is a perspective view of one of the wavy plate blocks for the moisture separator, with portions broken away.
  • FIG. 1 A system, shown schematically, of a steam power plant employing the moisture separating and reheating apparatus of the present invention is shown in FIG. 1.
  • a steam power plant system for example an atomic power turbine plant
  • main actuating steam from a reactor is provided in a nearly saturated condition to be fed into line 66 to a high pressure turbine 60, and after traveling through and expanding in the high pressure turbine 60, the exhaust steam will exit through line 70 with a large amount of moisture.
  • the moisture within the steam exhausted from the high pressure turbine 60 will be removed in the moisture'separator 62, with the condensate being removed by a drain conduit 67.
  • first and second reheaters 63, 64 where the actuating steam will be heated to become superheated steam to pass into the outlet conduit 71 for delivery to the low pressure turbine 61.
  • steam may be extracted from the high pressure turbine 60 at a midpoint in the expansion by means of conduit 65, or steam may be obtained from the main steam inlet conduit 66. After the heat exchange steam from lines 65, 66 passes through the reheaters 63, 64, it will be exhausted as moist steam or condensate from drain conduits 68, 69, respectively.
  • the apparatus that is the particular subject matter of the present invention is used in the overall system of FIG. 1 as the steam separator 62 and the reheaters 63, 64.
  • the apparatus of the present invention is shown in detail in FIG. 2 as a unit 10, for removing moisture from the moisture laden, saturated steam, for example vapor steam, in a highly pressurized state and heating the demoisturized steam to a dry and/or superheated state.
  • This type of apparatus is generally known in the art and is usually called a unitary moisture separator and steam reheater apparatus.
  • the above term will be used in this specification, and also steam and water will be employed in the description of the moisture separator and steam reheater apparatus for the same reason, and not by way of limitation.
  • the moisture separating and steam reheating apparatus of the present invention is provided with a horizontally disposed and axially elongated tubular shell or casing 11, which is closed at its opposite axial ends by a pair of oppositely disposed end caps or closures 50, 51, and is further provided with a plurality of steam inlets 12 that extend through and are mounted on the side cylindrical wall 52 and a plurality of steam outlets 13 that extend through and are mounted on the opposite, side cylindrical wall 53.
  • a rectifying or flow directing device 14 which is comprised of a plurality of rectifying plates to distribute the quantity of steam flow evenly along any position of the rectifying device, which is preferably disposed in a vertical plane perpendicular to the flow path of the inlets 12.
  • a moisture separator 15 of a wave plate type, and downstream from the moisture separator 15, there are provided, serially, first and second reheaters 16, 17.
  • Each of the reheaters 16 and 17 includes a heat exchanger of the parallel tube type, with the tubes extending generally between the end closures 50, 51.
  • the moisture separator 15 will divide the interior into a moist steam chamber adjacent the inlets l2 and a steam chamber on the side of the outlets 13, with the reheaters 16, 17 being within this steam chamber.
  • the interior is further divided by means of oppositely disposed partitions 24, 25, which will support the opposite axial ends of the rectifying device 14, the moisture separator 15, and the reheaters 16, 17.
  • partitions 24, 25, which will support the opposite axial ends of the rectifying device 14, the moisture separator 15, and the reheaters 16, 17.
  • the rectifier unit is correspondingly divided into a plurality of individual blocks.
  • headers 18, 19 To provide heat exchange fluid to the first and second reheaters 16, 17, there are respectively provided headers 18, 19. Heat exchange steam is provided, as shown in FIG. 2, through inlets conduits 20, 21 to the headers 18, 19 for distribution to the reheaters 16, 17, respectively.
  • the plurality of tubes that form the reheaters 16, 17 extend from the upper portion of the headers 18, 19 horizontally in parallel spaced relationship to the opposite end of the shell, where they are bent with return portions so as to extend axially and parallel back to the headers 18, 19.
  • the heat exchange fluid is returned to the lower portions of the headers 18, 19, and any condensate in the returned heat exchange fluid is conducted through drain conduits 22, 23 that are respectively connected to the lower return portions of the headers 18, 19.
  • the inlet and outlet terminal ends of the heat exchange tubes of U-type are mounted in and supported by a partition 34 that closes the end of the headers 18, 19.
  • the return bend portions of the heat exchange tubes are mounted in and supported by the partition 25, and the center portions of these tubes are mounted and supported on partition plates 30 that are provided in axial spaced relationship throughout the length of the shell 11 as desired, whereby deflection and vibration of the tubes are prevented.
  • plates 26 and 27 are horizontally disposed in the shell 11 so that they will hold the upper and lower portions of the reheaters 16, 17, the rectifying device 14, the moisture separator 15 and the partitions 24, 25, 30, respectively.
  • a drain receptacle 28, as shown in FIG. 4, is mounted in the lower surface of the plate 27 and a conduit 29 is connected to the drain receptacle 28 so as to discharge condensed liquids to the exterior of the shell 11.
  • the header 18 is divided into a steam chamber 32 and a water chamber 33 by means of a partition 35, which partition will prevent direct communication between the two chambers.
  • the water chamber 33 is provided with a water drain conduit 22.
  • the header 19 has a substantially identical construction to the header 18.
  • Vertically disposed outlet baffle plates 31 are mounted within the shell 1 1 so that they face the row of outlets 13 to distribute the flow of steam from the reheaters so as to obtain an even distribution of steam through the reheaters.
  • steam from the high pressure turbine 60 will flow through the conduit 70, with respect to the overall system of FIG. 1, to be delivered through steam inlets 12 into the shell 11 of FIG. 2, in a substantially horizontal direction transverse to the axis of the shell 11.
  • the incoming steam from inlets 12 will be evenly distributed by the rectifying device 14, so that substantially uniform streams of steam will enter the moisture separator 15, which can therefore uniformly remove moisture from the streams throughout its elongated length.
  • the removed moisture or condensate will drop from the plates of the separator 15 and gather at the drain receptacle 28 to be drained through the conduit 29.
  • the steam will enter into the first and second reheaters 16, 17 to be reheated as they cross the entire structure of the reheaters 1'6, 17.
  • the heat exchange fluid, particularly steam, that is provided within the tubes of the reheaters 16 17 will be conductedto the steam chamber 32 of header l8v by inlet conduit 20, and then will flow in a U-shape through the tubes of the reheater 16 to return to the water chamber 33. From the water chamber 33, any remaining steam will flow out of the outlet conduit 27, and that portion of the heat exchange steam that hasbeen condensed will flow as water through the drain conduit 22.
  • the second re-' heater 17 has the same function and a similar operation as the above described first reheater 16. Q
  • a plurality of steam-inlets 12 and a plurality of steam'outlets 13 are respectively disposed on opposite side walls 52, 53 of the shell 11 in aligned positions with the rectifying 'device 14;
  • the moisture separator 15, and the reheaters 16, 17 therebetween that is sequentially arranged between the inlets and outlets and vertically disposed in the shell so that the actuating steam can flow substantially in a straight line from the inlets 12 to the outlets 13 in the shell.
  • a unitary moisture separating and steam reheating apparatus comprising: an axially elongated tubular shell structure having a pair of oppositely disposed end closure members; a plurality of steam inlets formed on a side wall of the shell structure; a plurality of steam outlets formed on another horizontally opposite side wall of the shell structure; flow rectifying means axially extending substantially from one of said end closure members to the other of said end closure members and being disposed vertically in the vicinity of the inlets for distributing the inlet steam along the length of said shell structure; moisture separator means extending vertically and in parallel to said flow rectifying means along a major portion of the length thereof for removing moisture from the steam; steam reheater means extending vertically and in parallel to said moisture separator means along a major portion of the length therefor for heating the steam; said steam reheater means being disposed between said moisture separator means and said steam .outlets, and including a plurality of longitudinally elongated heat exchange tubes; said steam inlets, rectifying means, moisture separator means,
  • a unitary moisture separating and steam reheating apparatus comprising: an axially elongated tubular shell structure having a pair of oppositely disposed end closure members; a plurality of steam inlets formed on a side wall of the shell structure; a plurality of steam outlets formed on another side wall of the shell structure; flow rectifying means axially extending substantiallyfrom one of said, end closure' membe'rs to the otherof said end closure members andbeing disposed in the vicinityvof the inlets for distributing the inlet steam along the length of said shell structure; moisture separator means extending in parallel to said flow rectif fying means along amajor portion of the length thereof for removing moisutre from the steam; steam reheater means extending in parallel to.
  • said moisture separator means along a major portion of the length therefor for heating the steam;
  • said steam reheater means being disposed between said moisture separator means and said steam outlets, and including a plurality of longitudinally'elongated heatexchange tubes;
  • said steam inlets, rectifying means, moisture separator means, steam reheater means, and steam outlets being seriallymounted so that the steam flows substantially straight from said steam inlets toward said steam outlets to pass through said moisture separator means and said steam reheater means at substantially right angles; and a plurality of baffle plates disposed between said steam reheater means and said steam outlets.
  • each of said partitions is substantially planar and extends perpendicular to said rectifying means, said moisture separator means, and said steam reheater means.
  • a unitary moisture separating and steam reheating apparatus as claimed in claim 8, wherein said tubes extend in parallel relationship from one terminal end at said steam chamber axially for substantially the entire length of said shell structure, are reversely bent at the end of said shell structure opposite from said header, and extend parallel to each other back to their opposite terminal ends at said water chamber.
  • a unitary moisture separating and'steam reheating apparatus comprising: an axially elongated tubular shell structure having a pair of oppositely disposed end closure members; a pair of transverse partitions respectively oppositely disposed adjacent each of said end closure members; a plurality of steam inlets formed on a side wall of the shell structure; a plurality of steam outlets formed on another side wall of the shell structure; flow rectifying means axially extending from one of said partitions to the other partition and being disposed adjacent to the inlets for distributing the inlet steam along the length of said shell structure; moisture separator means extending in parallel to said flow rectifying means along said flow rectifying means from said one partition to said other partition for removing moisture from the steam; steam reheater means extending in parallel to said moisture separator means and along said moisture separator for heating the steam; said steam reheater means being disposed between said moisture separator means and said steam outlets, and including a plurality of longitudinally elongated heat exchanger tubes supported by said partitions, and a pair of partition

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
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  • General Engineering & Computer Science (AREA)
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US441798A 1973-02-12 1974-02-12 Moisture separating and steam reheating apparatus Expired - Lifetime US3923009A (en)

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JP48016638A JPS5143525B2 (de) 1973-02-12 1973-02-12

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996897A (en) * 1975-11-21 1976-12-14 General Electric Company Reheater for a moisture separator reheater
US4143619A (en) * 1976-03-30 1979-03-13 Stein Industrie S.A. Heat exchanger for superheating steam
US4248181A (en) * 1978-10-11 1981-02-03 Stein Industrie Vertical steam separator-superheater
US4386583A (en) * 1977-09-23 1983-06-07 Westinghouse Electric Corp. Moisture separator reheater apparatus
US20050220684A1 (en) * 2004-04-05 2005-10-06 Reinke Michael J Actively cooled exothermic reactor
US20070189938A1 (en) * 2003-02-28 2007-08-16 Jeroen Valensa Reformate cooling system and method for use in a fuel processing subsystem
US20090288418A1 (en) * 2006-08-28 2009-11-26 Issaku Fujita Moisture separator
US9739178B2 (en) 2012-05-25 2017-08-22 General Electric Technology Gmbh Steam Rankine plant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE408362B (sv) * 1976-12-29 1979-06-05 Philips Svenska Ab Sett att vid en fjerrskrivanleggning reglera strommmen samt anordning for utforande av settet
JPS5824525Y2 (ja) * 1976-05-12 1983-05-26 株式会社共和電業 有線伝送回路
JPS5345113A (en) * 1976-10-05 1978-04-22 Mitsubishi Electric Corp Two-way communication circuit for two-wire system exclusive line
JPS5363913A (en) * 1976-11-19 1978-06-07 Hitachi Ltd Signal transmission circuit
JPS63245070A (ja) * 1987-03-31 1988-10-12 Nec Home Electronics Ltd ダイナミツクフオ−カス回路
JP6386243B2 (ja) * 2014-03-27 2018-09-05 三菱日立パワーシステムズ株式会社 湿分分離加熱器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593500A (en) * 1968-11-25 1971-07-20 Westinghouse Electric Corp Device for separating moisture-laden vapor
US3667430A (en) * 1970-06-04 1972-06-06 Gen Electric Modular combined moisture separator and reheater
US3712272A (en) * 1971-10-19 1973-01-23 Gen Electric Combined moisture separator and reheater
US3750371A (en) * 1968-12-04 1973-08-07 Sulzer Ag Apparatus for separating liquids from wet steam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593500A (en) * 1968-11-25 1971-07-20 Westinghouse Electric Corp Device for separating moisture-laden vapor
US3750371A (en) * 1968-12-04 1973-08-07 Sulzer Ag Apparatus for separating liquids from wet steam
US3667430A (en) * 1970-06-04 1972-06-06 Gen Electric Modular combined moisture separator and reheater
US3712272A (en) * 1971-10-19 1973-01-23 Gen Electric Combined moisture separator and reheater

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996897A (en) * 1975-11-21 1976-12-14 General Electric Company Reheater for a moisture separator reheater
US4143619A (en) * 1976-03-30 1979-03-13 Stein Industrie S.A. Heat exchanger for superheating steam
US4386583A (en) * 1977-09-23 1983-06-07 Westinghouse Electric Corp. Moisture separator reheater apparatus
US4248181A (en) * 1978-10-11 1981-02-03 Stein Industrie Vertical steam separator-superheater
US20070189938A1 (en) * 2003-02-28 2007-08-16 Jeroen Valensa Reformate cooling system and method for use in a fuel processing subsystem
US7666237B2 (en) 2003-02-28 2010-02-23 Modine Manufacturing Company Reformate cooling system and method for use in a fuel processing subsystem
US20050220684A1 (en) * 2004-04-05 2005-10-06 Reinke Michael J Actively cooled exothermic reactor
US7648686B2 (en) * 2004-04-05 2010-01-19 Modine Manufacturing Company Actively cooled exothermic reactor
US20090288418A1 (en) * 2006-08-28 2009-11-26 Issaku Fujita Moisture separator
US7993426B2 (en) * 2006-08-28 2011-08-09 Mitsubishi Heavy Industries, Ltd. Moisture separator
US9739178B2 (en) 2012-05-25 2017-08-22 General Electric Technology Gmbh Steam Rankine plant

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Publication number Publication date
JPS5143525B2 (de) 1976-11-22
JPS504401A (de) 1975-01-17
CA977639A (en) 1975-11-11

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