DE809199C - Device for flushing through individual pipe runs of a forced flow boiler - Google Patents
Device for flushing through individual pipe runs of a forced flow boilerInfo
- Publication number
- DE809199C DE809199C DEP50853A DEP0050853A DE809199C DE 809199 C DE809199 C DE 809199C DE P50853 A DEP50853 A DE P50853A DE P0050853 A DEP0050853 A DE P0050853A DE 809199 C DE809199 C DE 809199C
- Authority
- DE
- Germany
- Prior art keywords
- flushing
- forced flow
- pipe strings
- flow boiler
- water
- 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
Links
Classifications
-
- 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
- F22B37/52—Washing-out devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
Die Erfindung betrifft Vorrichtungen zum Durchspülen einzelner Rohrstränge eines Zwangdurchflußkessels ohne Betriebsunterbrechung.The invention relates to devices for flushing individual pipe strings of a forced-flow boiler without interrupting operation.
Es ist bekannt, bei einem Zwangdurchflußkessel jeden Rohrstrang desjenigen Heizflächenteiles, in welchem die,Restverdampfung erfolgt, einzeln zu spülen. Infolge der bestehenden Querverbindungen der Rohrschlangen kann nur ein kleiner Teil der Heizfläche gespült werden, und es ist notwendig, auf der Dampfseite Rückströmdrosseln anzubringen.It is known in a forced-flow boiler, each pipe string of the one The part of the heating surface in which the residual evaporation takes place must be rinsed individually. As a result of the existing cross-connections of the pipe coils can only be a small part of the The heating surface must be flushed and it is necessary to use non-return throttles on the steam side to attach.
Demgegenüber wird gemäß der Erfindung auf der Wassereintrittsseite eines jeden Rohrstranges eine Drosseldüse angeordnet, welche während des Spülvorganges überbrückt wird.In contrast, according to the invention on the water inlet side of each pipe string a throttle nozzle is arranged, which during the flushing process is bridged.
Die Anordnung gemäß der Erfindung ist in den Abb. i und 2 schematisch dargestellt.The arrangement according to the invention is shown schematically in Figs shown.
Das Speisewasser tritt aus dem Verteiler i in die parallel geschalteten Rohrstränge 2 ein. Diese enthalten jeder eine Erweiterung 3, in welcher die überbrückbare Drosseldüse 4 angeordnet ist. Die einzelnen Rohrstränge laufen parallel durch den Dampferzeuger und bilden den Speisewasservor-«-ärmer 5 und die durch Strahlung beheizte Verdampferheizfläche 6. Aus dieser treten die Rohre in einen als Quersammler ausgebildeten Abscheider 7 ein. Der abgeschiedene Dampf strömt durch die Rohre 8 und den Vorüberhitzer g in den Dampf -temperaturregler io, in welchen zur Gleichhaltung der Enddampftemperatur durch Rohrleitung i i mit Düse.i2 Speisewasser eingespritzt wird. Der gekühlte Dampf strömt durchs die Rohre 13 und den Nachüberhitzer 14 zu dem Sammler 15, aus welchem er zu den Verbrauchsstellen geleitet wird.The feed water comes out of the distributor i into the parallel-connected Pipe strings 2 a. These each contain an extension 3, in which the bridgeable Throttle nozzle 4 is arranged. The individual pipe strings run parallel through the Steam generator and form the feedwater pre - «- poorer 5 and the one heated by radiation Evaporator heating surface 6. From this, the pipes enter a transverse collector Separator 7 a. The separated steam flows through the tubes 8 and the preheater g in the steam temperature controller io, in which to keep the final steam temperature equal feed water is injected through pipeline i i with nozzle i2. The chilled steam flows through the tubes 13 and the post-superheater 14 to the collector 15, from which it is directed to the consumption points.
Die Drosseldüse 4 besteht, wie Abb. 3 und 4 zeigen, aus einer zylindrischen Scheibe mit einer Düsenöffnung 4' und ist in der Erweiterung 3 des Rohres 2 mittels Zapfen 16 und Welle 17, die durch eine Stopfbüchse 18 abgedichtet ist, drehbar gelagert. Anscbläge im Antrieb, der nicht dargestellt ist, begrenzen die Drehung der Drosseldüse auf 9o°.As shown in FIGS. 3 and 4, the throttle nozzle 4 consists of a cylindrical one Disc with a nozzle opening 4 'and is in the extension 3 of the tube 2 by means Pin 16 and shaft 17, which is sealed by a stuffing box 18, rotatably mounted. Stops in the drive, which is not shown, limit the rotation of the throttle nozzle to 9o °.
Die Wirkungsweise der Anordnpng ist folgende: Die Drosselscheiben 4 stehen im normalen Betrieb so, daß sie den Durchgang durch den Querschnitt 3 versperren und die Strömung größtenteils durch die Düsenöffnung 4' erfolgen muß. Wenn ein abnormaler Druckunterschied zwischen Wassereintritt i und Dampfentnahme 15 festgestellt wird, ist dies ein Zeichen dafür, daß sich in der Verdampfungsheizfläche Salze angesetzt haben. Es ist dann notwendig, die Heizfläche durchzuspülen. Zu diesem Zweck wird an einem Rohrstrang die Welle 17 uin 9o° gedreht, so daß die Drosselscheibe in die in Abb.3 und 4 dargestellte Lage kommt. Das Wasser kann daher zu beiden Seiten an ihr vorl),eisxrömen, und infolge des verringerten Widerstandes wird eine größere Wassermenge durch den Rohrstrang fließen, als in ihm verdampft werden kann.The mode of operation of the arrangement is as follows: The throttle discs 4 stand in normal operation in such a way that they block the passage through the cross-section 3 and most of the flow must be through the nozzle opening 4 '. When an abnormal Pressure difference between water inlet i and steam outlet 15 is determined, this is a sign that salts have built up in the evaporation heating surface to have. It is then necessary to flush the heating surface. To this end, will on a pipe string, the shaft 17 rotated uin 9o °, so that the throttle disc in the The situation shown in Fig. 3 and 4 comes. The water can therefore flow on both sides you forward, ice flow, and as a result of the reduced resistance it becomes greater Amount of water flowing through the pipe string than can be evaporated in it.
In dem Abscheider 7 wird sich das Wasser vom Dampf trennen und durch die Rohre i9 in den Behälter 2o strömen, aus dem es durch Öffnen des Ventils 21 abgeschlämmt wird. Nach einer angemessenen Zeitspanne, etwa nach 2 Minuten, wird die Drosselscheibe 4 wieder um 9o° in die Normalstellung gedreht und der gleiche Vorgang wird am nächsten Rohrstrang wiederholt und so fort, bis alle Rohre durchgespült sind. Dann wird auch .das Ventil 21 wieder geschlossen.In the separator 7, the water will separate from the steam and through the tubes i9 flow into the container 2o, from which it is released by opening the valve 21 is drained. After a reasonable period of time, say 2 minutes, will the throttle disk 4 rotated again by 90 ° into the normal position and the same The process is repeated on the next pipe string and so on until all pipes are flushed through are. Then the valve 21 is also closed again.
Die Umstellung der Drosseldüsen kann auch selbsttätig ausgeführt und der Apparat dazu kann selbsttätig in Abhängigkeit von dem Druckunterschied zwischen 1 und 7 in und außer Betrieb gesetzt werden.The adjustment of the throttle nozzles can also be carried out automatically the apparatus for this can automatically depending on the pressure difference between 1 and 7 can be put in and out of operation.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP50853A DE809199C (en) | 1949-08-03 | 1949-08-03 | Device for flushing through individual pipe runs of a forced flow boiler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP50853A DE809199C (en) | 1949-08-03 | 1949-08-03 | Device for flushing through individual pipe runs of a forced flow boiler |
Publications (1)
Publication Number | Publication Date |
---|---|
DE809199C true DE809199C (en) | 1952-04-07 |
Family
ID=7384683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP50853A Expired DE809199C (en) | 1949-08-03 | 1949-08-03 | Device for flushing through individual pipe runs of a forced flow boiler |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE809199C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781960A2 (en) * | 1995-11-28 | 1997-07-02 | Asea Brown Boveri Ag | Purification of a water-steam cycle in an once-through steam generator |
-
1949
- 1949-08-03 DE DEP50853A patent/DE809199C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781960A2 (en) * | 1995-11-28 | 1997-07-02 | Asea Brown Boveri Ag | Purification of a water-steam cycle in an once-through steam generator |
EP0781960A3 (en) * | 1995-11-28 | 1997-10-22 | Asea Brown Boveri | Purification of a water-steam cycle in an once-through steam generator |
US5840130A (en) * | 1995-11-28 | 1998-11-24 | Asea Brown Boveri Ag | Cleaning of the water/steam circuit in a once-through forced-flow steam generator |
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