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US3859964A - Once through boiler - Google Patents

Once through boiler Download PDF

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Publication number
US3859964A
US3859964A US406631A US40663173A US3859964A US 3859964 A US3859964 A US 3859964A US 406631 A US406631 A US 406631A US 40663173 A US40663173 A US 40663173A US 3859964 A US3859964 A US 3859964A
Authority
US
United States
Prior art keywords
pipes
helical coil
downcomer
chamber
once
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.)
Expired - Lifetime
Application number
US406631A
Other languages
English (en)
Inventor
Moribumi Kozeki
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.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
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 Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Application granted granted Critical
Publication of US3859964A publication Critical patent/US3859964A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/22—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight
    • F22B21/26—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight bent helically, i.e. coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
    • F22B1/162—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour in combination with a nuclear installation
    • 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
    • F22B37/62—Component parts or details of steam boilers specially adapted for steam boilers of forced-flow type
    • F22B37/70—Arrangements for distributing water into water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration

Definitions

  • the present invention has for its object to provide an once through boiler wherein flow of the fluid to be heated is stable over a wide range of load.
  • FIG. 1 is a sectional view of a helical coil type once through boiler according to the present invention
  • FIG. 2 is a sectional view taken along the line II-II of FIG. 1;
  • FIG. 3 is a view showing the connection of one pipe line in the passage of the fluid to be heated.
  • reference numeral 1 designates a cylindrical drum having at its top end an inlet nozzle 2 of heating fluid and at the bottom an outlet nozzle 3.
  • the drum 1 In the drum 1 are provided concentric cylindrical partition walls 11, 12, 13 at lower half of the drum, whereby there are defined, a downcommer chamber 10, a helical coil chamber 9 and a central space 4.
  • a shield film 20 is provided between the top end of the partition wall 11 and the inside of the drum 1.
  • a plurality of water supply pipes 8 are connected to a pipe header 5 provided in the upper portion of the drum 1. These water supply pipes 8 are connected to the downcommer pipes 16 disposed circumferentially in the chamber 10 respectively, and each downcommer pipe is connected at the bottom end to the connecting pipe 17.
  • a plurality of helical coil pipes 14 Disposed in the chamber 9 are a plurality of helical coil pipes 14 each of which lower end connected to the connecting pipe 17 through a reducer 15. Each helical coil pipe 14 is connected at the upper end to the respective vapor discharge conduit 7 and thereby connected to a header 6 provided at the upper part of the drum 1. Water supply pipes 8, downcommer pipes 16 and connecting pipes 17 are smaller in diameter than the helical pipes 14 and vapor conduits 7 so that a pressure loss will be generated.
  • a cover 18 is mounted over the central space 4 to prevent bypassing of the heated fluid. This central space 4 can be utilized for various purposes.
  • heating fluid is introduced into the drum 1 from the inlet nozzle 2, a part of the fluid flowing through the downcommer chamber 10 and the remainder through the helical pipe channel 9, and after transmitting sensible heat of the heating fluid to the fluid to be heated, the heating fluid flows out from the outlet nozzle 3.
  • the fluid to be heated is introduced in the conduits 8, and flows in the downcommer l6, connecting pipes 17, helical pipes 14 and vapor conduits 7, and flows out from the header 6.
  • preheating of water is taken place, while boiling and overheating are effected in the helical pipes 14.
  • the downcommer pipes 16, connecting pipes 17 and water supply pipes 8 are formed smaller in diameter than the helical pipes 14, and flow resistance on the water supply side, which has been increased by orifices in the conventional systems, is increased by these small diameter pipes, and also heating fluid is flown through the downcommer 10 to effectuate heat transmission in these portions, too, thereby making it possible to use these portions as water preheating sections during heavy loading and to effect boiling in these portions, too, during small loading.
  • the tendency of increasing the unstable flow due to elongation of the superheater tubes at the helical pipes 14 is alleviated.
  • the mechanism can be more simplified than the conventional systems and also fluid flow can be stabilized over a wide range of load. Further, as the small diameter downcommer pipes are utilized for heating of water supplied, the boiler body can be reduced in size.
  • a once-through boiler comprising drum means having heating fluid inlet means and heating fluid outlet means, a downcomer chamber and a helical coil chamber both insaid drum means and one within the other, a plurality of downcomer pipes in said downcomer chamber, means for supplying water to the upper ends of said downcomer pipes, a plurality of helical coil pipes in said helical coil chamber, each of said helical coil pipes being supplied at its lower end with water from the lower end of one of said downcomer pipes, said downcomer pipes and said helical coil pipes both being positioned in heat-exchange relation to said heating fluid as it passes from said inlet means to said outlet means, each of said downcomer pipes being substantially smaller in diameter than the helical coil pipe which it supplies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US406631A 1972-10-16 1973-10-15 Once through boiler Expired - Lifetime US3859964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972119795U JPS5723761Y2 (no) 1972-10-16 1972-10-16

Publications (1)

Publication Number Publication Date
US3859964A true US3859964A (en) 1975-01-14

Family

ID=14770399

Family Applications (1)

Application Number Title Priority Date Filing Date
US406631A Expired - Lifetime US3859964A (en) 1972-10-16 1973-10-15 Once through boiler

Country Status (13)

Country Link
US (1) US3859964A (no)
JP (1) JPS5723761Y2 (no)
AU (1) AU448771B2 (no)
BE (1) BE806120A (no)
CA (1) CA988378A (no)
DE (1) DE2351628A1 (no)
DK (1) DK132351C (no)
FR (1) FR2203490A5 (no)
GB (1) GB1439413A (no)
IT (1) IT995883B (no)
NL (1) NL7314152A (no)
NO (1) NO135721C (no)
SE (1) SE389386B (no)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972688A (en) * 1974-03-18 1976-08-03 Metallgesellschaft Aktiengesellschaft Reactor for cracking hydrocarbons
US20130279643A1 (en) * 2012-04-20 2013-10-24 John T. Groome Steam Generator for a Nuclear Reactor
CN105214347A (zh) * 2015-10-07 2016-01-06 大连碧蓝节能环保科技有限公司 一种蒸发式气液分离装置
US12040097B2 (en) 2013-12-26 2024-07-16 Nuscale Power, Llc Integral reactor pressure vessel tube sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565322B1 (fr) * 1984-05-29 1986-08-01 Commissariat Energie Atomique Dispositif d'injection d'un liquide dans un tube et generateur de vapeur comportant ce dispositif
DE102010041754A1 (de) * 2010-09-30 2012-04-05 Siemens Aktiengesellschaft Vorrichtung und Verfahren zur Erzeugen von überhitztem Wasserdampf mittels Solar-Energie basierend auf dem Zwangsdurchlauf-Konzept mit helikaler Wasser/Wasserdampf-Führung sowie Verwendung des überhitzten Wasserdampfs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112735A (en) * 1959-03-30 1963-12-03 Babcock & Wilcox Co Liquid metal heated vapor generator
US3254633A (en) * 1963-02-28 1966-06-07 Babcock & Wilcox Co Vapor generating and superheating unit
US3395676A (en) * 1966-07-05 1968-08-06 Babcock & Wilcox Co Vapor generator
US3742915A (en) * 1971-11-03 1973-07-03 Atomic Power Dev Ass Inc Heat exchangers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142029B2 (no) * 1972-05-24 1976-11-13

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112735A (en) * 1959-03-30 1963-12-03 Babcock & Wilcox Co Liquid metal heated vapor generator
US3254633A (en) * 1963-02-28 1966-06-07 Babcock & Wilcox Co Vapor generating and superheating unit
US3395676A (en) * 1966-07-05 1968-08-06 Babcock & Wilcox Co Vapor generator
US3742915A (en) * 1971-11-03 1973-07-03 Atomic Power Dev Ass Inc Heat exchangers

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972688A (en) * 1974-03-18 1976-08-03 Metallgesellschaft Aktiengesellschaft Reactor for cracking hydrocarbons
US20130279643A1 (en) * 2012-04-20 2013-10-24 John T. Groome Steam Generator for a Nuclear Reactor
CN104272397A (zh) * 2012-04-20 2015-01-07 纽斯高动力有限责任公司 用于核反应堆的蒸汽发生器
KR20150003807A (ko) * 2012-04-20 2015-01-09 뉴스케일 파워, 엘엘씨 원자로용 증기 발생기
US9230697B2 (en) * 2012-04-20 2016-01-05 Nuscale Power, Llc Steam generator for a nuclear reactor
CN104272397B (zh) * 2012-04-20 2016-12-21 纽斯高动力有限责任公司 用于核反应堆的蒸汽发生器
US10147507B2 (en) 2012-04-20 2018-12-04 Nuscale Power, Llc Steam generator for a nuclear reactor
KR20200111284A (ko) * 2012-04-20 2020-09-28 뉴스케일 파워, 엘엘씨 원자로용 증기 발생기
US12040097B2 (en) 2013-12-26 2024-07-16 Nuscale Power, Llc Integral reactor pressure vessel tube sheet
CN105214347A (zh) * 2015-10-07 2016-01-06 大连碧蓝节能环保科技有限公司 一种蒸发式气液分离装置

Also Published As

Publication number Publication date
BE806120A (fr) 1974-02-15
AU6127173A (en) 1974-05-30
SE389386B (sv) 1976-11-01
JPS4972802U (no) 1974-06-25
NO135721C (no) 1977-05-16
JPS5723761Y2 (no) 1982-05-24
DK132351B (da) 1975-11-24
NL7314152A (no) 1974-04-18
CA988378A (en) 1976-05-04
AU448771B2 (en) 1974-05-30
NO135721B (no) 1977-02-07
DK132351C (da) 1976-04-26
GB1439413A (en) 1976-06-16
FR2203490A5 (no) 1974-05-10
DE2351628A1 (de) 1974-05-02
IT995883B (it) 1975-11-20

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