EP0344094B1 - Réservoir de détente pour fluides chauds sous pression - Google Patents

Réservoir de détente pour fluides chauds sous pression Download PDF

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Publication number
EP0344094B1
EP0344094B1 EP89730114A EP89730114A EP0344094B1 EP 0344094 B1 EP0344094 B1 EP 0344094B1 EP 89730114 A EP89730114 A EP 89730114A EP 89730114 A EP89730114 A EP 89730114A EP 0344094 B1 EP0344094 B1 EP 0344094B1
Authority
EP
European Patent Office
Prior art keywords
flash
chambers
pressure
condensate
chamber
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
EP89730114A
Other languages
German (de)
English (en)
Other versions
EP0344094A1 (fr
Inventor
Helmuth Sauerbrey
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT89730114T priority Critical patent/ATE71200T1/de
Publication of EP0344094A1 publication Critical patent/EP0344094A1/fr
Application granted granted Critical
Publication of EP0344094B1 publication Critical patent/EP0344094B1/fr
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
    • F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
    • F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
    • 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
    • F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
    • 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
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/54—De-sludging or blow-down devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines

Definitions

  • the invention relates to a relaxation device for pressurized hot media, in particular water, according to the preamble of claim 1.
  • lances which are to be regarded as horizontal manifolds.
  • a lance which can have a considerable length, usually opens tangentially into the expansion tank.
  • the individual drains that are opened to the lance via drain valves can lead to hot water with very different pressure levels.
  • evaporation occurs immediately behind the drain valve, with a 2-phase flow (steam / water) forming in the lance.
  • the object of the invention is to provide a relaxation device of the generic type which largely avoids these disadvantages.
  • the basic idea of the invention is to be seen in the fact that a consequent separation of processes of different pressure levels is carried out insofar as a hot medium under pressure with its liquid phase is kept completely separate from liquid media of other pressure levels during the expansion to approximately ambient pressure. This is achieved in that the media streams are introduced into the expansion device in separate lines, the drain valves being arranged close to the expansion device.
  • the relaxation of the media and the associated steam generation (evaporation) takes place in separate relaxation chambers, which are partitioned off from each other by partitions. Only media flows of the same pressure level can be introduced into a common expansion chamber. The expediency of such a joint treatment depends in particular on whether the throughput of the relaxation chamber is adequate for the flow rates to be expected if necessary.
  • the amounts of steam generated during the degassing in the individual expansion chambers immediately pass into a common, large-volume steam collection space, since the expansion chambers are open at the top.
  • the steam can be discharged almost without pressure from the steam collecting space via an exhaust steam line. It is also possible to arrange a heat exchanger in the steam collecting space in order to largely recover the heat energy present in the steam and the liquid medium (eg processed process water) through condensation of the steam.
  • the relaxed liquid medium in the relaxation chamber can flow calmly through a perforated floor into an underlying condensate collecting space, which is common to all relaxation chambers.
  • the condensate level is e.g. always kept at the same level via a process loop or other control device. So that the evaporation still taking place in the condensate collection space does not lead to faults, a pressure compensation line is provided to the steam collection space.
  • the expansion device 1 shown in FIGS. 1 and 2 has a standing, essentially circular-cylindrical housing 2, which is closed by a base through which a condensate drain 8 is guided and by a cover through which an evaporation line 11 is guided.
  • a base through which a condensate drain 8 is guided and by a cover through which an evaporation line 11 is guided.
  • other housing shapes eg with a polygonal cross section
  • numerous radially arranged supply lines 5 open, through which, for example, hot pressurized water can be introduced into the expansion device 1. In Figure 1, only one of these leads 5 is shown.
  • the drain valves (not shown) for opening and closing these supply lines 5 can be attached in the immediate vicinity of the housing shell 2.
  • Each feed line 5 leads into an expansion chamber 4, which is formed in each case between a part of the housing shell 2, two lateral vertical, radially oriented partition walls 3 and a part of a pressure compensation line 10 arranged coaxially to the housing 2.
  • the individual expansion chambers 4 are arranged as sectors around the central pressure compensation line 10. At the bottom, they are closed off by a common perforated base 6 welded to the housing jacket 2, under which the condensate collecting space 7 reaching to the bottom of the housing 2 is located. At the top, all of the relaxation chambers 4 are open to a common steam collecting space 9.
  • Two expansion chambers 4 each have two feed lines 5 of smaller diameter, which are provided for media flows of the same pressure level, while all the others have only a single feed line 5.
  • the dividing walls 4 are welded only to the perforated base 6 and the pressure compensation line 10, which is designed as a conically expanding tube, but not along the contact surface line with the housing 2.
  • each partial flow can relax completely independently and undisturbed from the others. Since the shut-off elements of the feed lines 5 are arranged close to the housing 2, there are no disturbing evaporation and 2-phase flows in the feed lines 5.
  • the pressure water flowing radially into the expansion chamber 4 flows against the central pressure compensation tube 10 and the radially converging partition walls 3.
  • the conical expansion of the pressure compensation tube 10 helps to ensure that the pressure water is not thrown upwards into the steam collection chamber 9, if possible, but rather into the expansion chamber 4 is thrown back.
  • the holding strip 12, which impedes the free access of the hot spray water into the steam collecting space 9, can also make a contribution in this sense.
  • the steam which is produced in the expansion chamber 4 and has an ambient pressure can reach the large-volume steam collecting space 9 almost unhindered and can be discharged from there through the exhaust steam line 11.
  • the relaxed hot water can flow through the perforated base 6 into the condensate collecting space 7, where a constant condensate level is maintained, for example, by a siphon-like drain.
  • the steam that subsequently arises in the condensate collection space 7 can flow unhindered into the steam collection space 9 via the central pressure compensation tube 10.
  • a heat exchanger 13 can be introduced into the condensate collecting space 9.
  • This heat exchanger 13 has a cylindrical inner jacket 14 designed as a perforated jacket, through which the steam can flow into an annular cooling chamber through which heat exchanger tubes 15 pass.
  • the cooling space is closed peripherally by a tight outer jacket 16 and at the top by the disk-shaped distribution channels of the coolant supply line 19 and the coolant discharge line 20.
  • the cooling space is delimited by a bottom 17 which is tightly connected to the housing jacket 2 and which is pulled upwards and directly adjoins the perforated jacket 14.
  • the condensate formed by the cooling can collect above the bottom 17.
  • the condensate level is always held at approximately the same level by a holding device, not shown, which is connected to the condensate drain line 18. Since the outer jacket 16 is immersed in the condensate, the steam collecting space 9 is itself sealed off from the outside, so that practically complete recovery of the process water is possible as long as the coolant supply is sufficient.
  • the condensate level is pressed down as a result of the pressure increase in the steam collection chamber 9 until the excess steam passes past the lower edge of the outer jacket 16 through the annular space between the outer jacket 16 and the housing jacket 2 above in the evaporation chamber 21 and from there, for example can be derived into the atmosphere.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Massaging Devices (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (7)

1. Dispositif de détente (1) pour fluides liquides chauds sous pression, en particulier pour de l'eau, dans lequel le fluide à détendre apparaît à au moins deux étages de pression différents et peut être introduit par des conduites d'amenée (5) isolables dans une chambre de détente qui est munie d'une conduite d'extraction des condensats (8) et d'une conduite d'extraction des vapeurs (11) de la vapeur apparaissant, caractérisé en ce que la chambre de détente est partagée par des parois de séparation (3) en chambres de détente (4) individuelles disposées les unes à côté des autres, et qui s'ouvrent vers le haut dans une chambre de collecte des vapeurs (9), en ce que les conduites d'amenée (5) du fluide séparées les unes des autres, sont dirigées dans la chambre de détente, chaque conduite d'amenée (5) étant reliée à une chambre de détente (4) distincte, ou bien des conduites d'amenée (5) au même étage de pression étant reliées à une chambre de détente (4) commune, en ce que les organes d'isolement des conduites d'amenée (5) sont disposés à proximité immédiate du dispositif de détente (1) en ce que les chambres de détente (4) sont reliées par un fond perforé (6) à une chambre de collecte des condensats (7) située en dessous d'elles, en ce que la chambre de collecte des condensats (7) est reliée à la chambre de collecte des vapeurs (9) par une conduite d'égalisation des pressions (10) et en ce qu'un dispositif de maintien d'un niveau des condensats dans la chambre de collecte des condensats (7) est prévu.
2. Dispositif de détente selon la revendication 1, caractérisé en ce que le dispositif de détente (1) présente une enveloppe (2) debout, présentant essentiellement la forme d'un cylindre circulaire, dans laquelle les parois de séparation (3) des chambre de détente (4) s'étendent radialement entre la conduite d'égalisation des pressions (10) disposée comme tube central coaxial a l'enveloppe (2) et la paroi de l'enveloppe (2).
3. Dispositif de détente selon l'une des revendications 1 ou 2 caractérisé en ce que les conduite d'amenée (5) du fluide débouchent dans la partie inférieure des chambres de détente (4) et dans une direction approximativement radiale.
4. Dispositif de détente selon les revendications 2 ou 3, caractérisé en ce que la conduite d'égalisation des pressions (10) s'évase coniquement vers le haut.
5. Dispositif de détente selon l'une des revendications 1 à 4, caractérisé en ce que les parois de séparation (3) des chambres de détente (4) ne sont pas soudées à la paroi de l'enveloppe (2), et ne le sont qu'au fond perforé (6) et à la conduite d'égalisation des pressions (10).
6. Dispositif de détente selon l'une des revendications 1 à 5, caractérisé en ce qu'à l'intérieur de la chambre de collecte des vapeurs (9) est installé un échangeur de chaleur (13) en vue du refroidissement et de la condensation des vapeurs.
7. Dispositif de détente selon l'une des revendications 1 à 6. caractérisé en ce que les parois de séparation (3) des chambres de détente (4) sont soudées en leur extrémité supérieure à une bande de maintien (12) périmétrique plate.
EP89730114A 1988-05-26 1989-05-02 Réservoir de détente pour fluides chauds sous pression Expired - Lifetime EP0344094B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89730114T ATE71200T1 (de) 1988-05-26 1989-05-02 Entspannungsvorrichtung fuer unter druck stehende heisse flussigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818165A DE3818165C1 (fr) 1988-05-26 1988-05-26
DE3818165 1988-05-26

Publications (2)

Publication Number Publication Date
EP0344094A1 EP0344094A1 (fr) 1989-11-29
EP0344094B1 true EP0344094B1 (fr) 1992-01-02

Family

ID=6355318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89730114A Expired - Lifetime EP0344094B1 (fr) 1988-05-26 1989-05-02 Réservoir de détente pour fluides chauds sous pression

Country Status (5)

Country Link
EP (1) EP0344094B1 (fr)
AT (1) ATE71200T1 (fr)
DD (1) DD283857A5 (fr)
DE (2) DE3818165C1 (fr)
NO (1) NO167414C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235824B (zh) * 2014-09-25 2016-02-03 无锡纳润特科技有限公司 锅炉排污膨胀器的切向污水分散装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9251998A (en) * 1997-08-28 1999-03-22 Steiner, Walter G. Electric current production and recuperation of water in the atmosphere using solar and wind energy
CN110746024B (zh) * 2019-10-28 2024-08-20 中国华电科工集团有限公司 一种低温省煤器废水浓缩余热回用装置
CN110746025A (zh) * 2019-10-28 2020-02-04 中国华电科工集团有限公司 一种低温负压废水零排放系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1579325A (en) * 1977-05-30 1980-11-19 Curwen & Newberry Ltd Blowdown tanks for boller installations
JPS5755304A (en) * 1980-09-22 1982-04-02 Tokyo Shibaura Electric Co Flasher
JPS6179905A (ja) * 1984-09-28 1986-04-23 株式会社日立製作所 ドレン回収システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235824B (zh) * 2014-09-25 2016-02-03 无锡纳润特科技有限公司 锅炉排污膨胀器的切向污水分散装置

Also Published As

Publication number Publication date
DE58900654D1 (de) 1992-02-13
DD283857A5 (de) 1990-10-24
NO890843D0 (no) 1989-02-28
NO890843L (no) 1989-11-27
DE3818165C1 (fr) 1989-12-28
NO167414C (no) 1991-10-30
EP0344094A1 (fr) 1989-11-29
ATE71200T1 (de) 1992-01-15
NO167414B (no) 1991-07-22

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