EP0745157A1 - Vorrichtung zum aufbringen von dampf - Google Patents
Vorrichtung zum aufbringen von dampfInfo
- Publication number
- EP0745157A1 EP0745157A1 EP95905552A EP95905552A EP0745157A1 EP 0745157 A1 EP0745157 A1 EP 0745157A1 EP 95905552 A EP95905552 A EP 95905552A EP 95905552 A EP95905552 A EP 95905552A EP 0745157 A1 EP0745157 A1 EP 0745157A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- box
- web
- press
- blow box
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/008—Steam showers
Definitions
- the invention relates to a device for applying steam to a running material web, e.g. onto a paper web to be dewatered and running through the press section of a papermaking machine.
- a device primarily includes a steam blower box.
- Such a steam blow box is mainly used in papermaking. It is used to increase the temperature of the material web with the help of the steam applied to the material web in order to increase the dewatering performance of the press section.
- the steam blower box offers the possibility of influencing the moisture cross profile of the material web by sectionally different steam application.
- the steam emerging from the sectional chambers is regulated by valves which are arranged inside the steam blow box.
- Each correction zone is equipped with a separate, generally pneumatically controlled valve.
- the invention has for its object to provide a device of the type described above, which meets as many of the following requirements as possible:
- control valves should be able to be repaired or replaced in a simple manner without the machine having to be temporarily stopped for this purpose.
- the distance between the steam blower box and the passing web should be adjustable. In normal operating conditions, the distance should be relatively small, but relatively large when starting up or for maintenance purposes.
- the zone chambers can be dimensioned as small as desired, because the control valves are basically arranged outside the steam blower box, to the side next to the machine.
- Each sectional steam line thus comprises a part attached to the steam box (with an inflow end located outside the steam box) and a movable part which is connected (directly or indirectly) to the relevant control valve on the one hand and which can be coupled to the mentioned inflow end by means of a line connection on the other hand.
- an essential partial idea of the invention is that the clear distance between adjacent inflow ends (of the line parts attached to the steam blower box) is substantially greater than the clear distance provided within the steam blower box between adjacent sectional steam lines.
- the parts of the sectional steam line attached to the steam blower box are fanned out against the direction of flow outside of the steam blower box.
- the steam is led from a main steam line to a steam distributor which is arranged outside the paper machine, preferably next to the paper machine, for example on the drive side or in the basement, for example, at a location that is easily accessible while the machine is in operation.
- the individual control elements are arranged on this steam distributor.
- Each individual zone chamber of the steam blower box is connected to the corresponding control valve via a separate sectional steam line.
- Flexible lines between the carrier plate and the control valves serve to absorb the pivoting movement and to compensate for any thermal longitudinal expansion of the steam blower box.
- the valve actuators are controlled by an electric motor.
- Fig. 1 overall view
- Fig. 2 cross section through a steam blow box
- the steam blower box 48 consists of a self-supporting stainless steel construction; it extends on the jacket of a roller guiding the paper web P transversely to the web running direction through the paper machine, from the driver side FS to the drive side TS (FIG. 8).
- Fig. 1 only the drive end of the steam blow box is shown.
- the lower support frame 1, 1 1 webs 43 are welded, the bores 10 and 11 exhibit.
- the lower support frame 1, 1 'and an upper support frame 2 are connected to one another via side walls 8 and 9. This design ensures optimal transverse stability.
- the support frames 1, 1 'and 2 as well as the side walls 8 and 9 delimit a central chamber 15. Through this extends a tube bundle, consisting of a plurality of steam lines 4, each of which opens into a zone chamber 3, in order to thereby pass the paper web P to be charged with "steam I".
- a steam channel 13 opens into the lower chamber 12.
- the preheating steam (“steam II”) flowing in here passes through the bores 10 and 14 into the chamber 15, which includes the tube bundle 4. Via the holes 16, this steam II finally reaches the chamber 33 of the support frame 2.
- the inflowing steam II is first passed through the chamber 12 from the drive side to the driver side and reaches the chamber 15 via holes in the connecting zone 45 (FIG 7 and 8).
- This steam II the temperature of which is higher than the steam I within the sectional steam lines 4, ensures that, even when the valves are closed, the sectional steam lines 4 and the individual zone chambers 3 are not cooled. This means that achieved that little or no condensate forms in the steam lines and in the zone chambers. Furthermore, a strict separation between steam I and steam II is ensured.
- the individual zone chambers 3 are arranged on the lower support frame 1, 1 '. They are fixed on the side plates 19 and 17.
- a separate steam line 4 opens into the zone chambers.
- Each zone chamber contains a perforated plate insert 20 with perforated plates 34, the free cross-sectional area of which increases towards the steam outlet. These perforated plates 34 cause the steam I within the individual zones are evenly distributed over the zone width.
- the individual perforated sheet inserts 20 can be pulled out for maintenance purposes (FIG. 3).
- the individual zone chambers 3 are delimited by a common steam outlet plate 22 (according to FIG. 1). This is screwed to the sheet metal parts 19 and 1, or fixed via guide strips 44, so that it can be easily removed for cleaning purposes. It has several rows of blowing openings 32 arranged one behind the other in the longitudinal direction. The direction of the steam outlet can be inclined perpendicular to the paper running direction or according to FIG. 2, so that the steam I flows against the incoming web. Wherever steam condensation could occur, drain openings 11, 18 are provided with the associated drainage channels 24, 25, 26, 27.
- the drive-side end of the steam blow box 48 rests on a frame 51 according to FIG. 1 by means of a carrier plate 28, which can be an extension of, for example, the lower support frame 1, 1 '(FIG. 2).
- the steam lines 4 are opposite to the steam flow direction extended beyond the drive end of the steam box; their inflow ends are, for example, firmly connected to the carrier plate 28.
- a control element, designated overall by R, is arranged laterally outside the paper machine and comprises, for each zone chamber 3, a control valve 35 driven by a stepping motor M.
- the connection from the control valves 35 to the carrier plate 28 is carried out by lines 29, which are at least partially designed as flexible lines.
- the outflow ends 29 'of a number of the flexible lines are fastened to a so-called supply plate 30.
- This supply plate is connected to the carrier plate 28 by means of snow tension element 31. If the steam blower box is removed, a quick uncoupling is possible via this tendon tension element (see FIGS. 4 and 5).
- the control valves 35 are designed so that several can be combined side by side on a steam distribution channel 36. Steam is supplied to each steam distribution channel 36 from a main steam line H.
- the width of the individual zone chamber can be reduced to a dimension that is only slightly larger than the outer diameter of the individual steam line 4.
- FIG. 6 schematically shows a press section in which a pre-press nip is formed between two press rolls 45 and 46, through which the paper web to be dewatered runs together with 2 felts.
- the lower felt runs to a felt guide roller 49, while the paper web together with the upper felt on the press roller 46 (mostly a suction press roller) runs upwards into a press nip which is formed between the rollers 46 and 47.
- the press roll 47 is feltless, i.e. this comes into direct contact with the paper web.
- One or two scrapers 50 are therefore provided for the constant cleaning of this roller.
- the steam blow box 48 already described above is arranged. It is shown in the normal operating position; however, it is slidable horizontally to temporarily move it to a position away from roller 46.
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT95905552T ATE174394T1 (de) | 1995-01-19 | 1995-01-19 | Vorrichtung zum aufbringen von dampf |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE1995/000060 WO1996022420A1 (de) | 1995-01-19 | 1995-01-19 | Vorrichtung zum aufbringen von dampf |
BR9507115A BR9507115A (pt) | 1995-01-19 | 1995-01-19 | Dispositivo para a aplicação de vapor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0745157A1 true EP0745157A1 (de) | 1996-12-04 |
EP0745157B1 EP0745157B1 (de) | 1998-12-09 |
Family
ID=25664715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95905552A Expired - Lifetime EP0745157B1 (de) | 1995-01-19 | 1995-01-19 | Vorrichtung zum aufbringen von dampf |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0745157B1 (de) |
BR (1) | BR9507115A (de) |
WO (1) | WO1996022420A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29809466U1 (de) | 1998-05-26 | 1998-08-06 | Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim | Dampfblaskasten |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2751245A1 (de) * | 1977-11-16 | 1979-06-21 | Valmet Oy | Verfahren und vorrichtung zur verbesserung der entwaesserung im pressenteil einer papiermaschine |
US4398355A (en) * | 1981-02-25 | 1983-08-16 | Dove Norman F | Steam distribution apparatus |
-
1995
- 1995-01-19 EP EP95905552A patent/EP0745157B1/de not_active Expired - Lifetime
- 1995-01-19 BR BR9507115A patent/BR9507115A/pt not_active Application Discontinuation
- 1995-01-19 WO PCT/DE1995/000060 patent/WO1996022420A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9622420A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1996022420A1 (de) | 1996-07-25 |
EP0745157B1 (de) | 1998-12-09 |
BR9507115A (pt) | 1997-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0323468B1 (de) | Stoffauflauf | |
AT411275B (de) | Verfahren und vorrichtung zum trocknen einer von einem stützfilz gestützen bahn | |
EP0745158B1 (de) | Dampfblaskasten | |
WO2018073086A1 (de) | Kühlung einer walze eines walzgerüsts | |
EP0997577B1 (de) | Stoffauflauf | |
DE3941242C2 (de) | ||
DE4105215C2 (de) | Sieb-Formerpartie | |
DE4402278C2 (de) | Vorrichtung zum Aufbringen von Dampf | |
EP0752495A1 (de) | Schuh-Presseinrichtung | |
EP0661469B1 (de) | Beheizbare Walze | |
DE102010007984A1 (de) | Form- und Kühlvorrichtung für eine fließfähige, aufgeschmolzene Lebensmittelmasse | |
EP0745157B1 (de) | Vorrichtung zum aufbringen von dampf | |
DE102004056750A1 (de) | Walze, insbesondere drehbare Walze für ein Fünfwalzwerk zur Schokoladenherstellung | |
DE2522070A1 (de) | Walzgutfuehrung fuer ein walzgeruest | |
EP0150300B1 (de) | Farbwerk für eine Druckmaschine | |
DE4106764C2 (de) | Kanalwand, insbesondere für einen Papiermaschinen-Stoffauflauf | |
DE10324711A1 (de) | Stoffauflauf | |
CH694864A5 (de) | Walze mit Durchbiegungsausgleich. | |
EP1644577B1 (de) | Anpresseinrichtung | |
DE8232424U1 (de) | Preßvorrichtung zum Entwässern einer laufenden Faserbahn | |
DE3242721A1 (de) | Pressvorrichtung zum entwaessern einer laufenden faserbahn | |
DE60032376T2 (de) | Kalander | |
DE60022149T2 (de) | Dampfblaskasten in einer Papiermaschine | |
DE202006015872U1 (de) | Stationäre Saugvorrichtung, Verwendung und Maschine zur Herstellung von Faserstoffbahnen mit einer derartigen Saugvorrichtung | |
DE9106311U1 (de) | Düsenartige Streicheinrichtung zum Auftragen von Streichmasse auf eine Papierbahn |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19960919 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE GB SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19980320 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE GB SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981209 |
|
REF | Corresponds to: |
Ref document number: 174394 Country of ref document: AT Date of ref document: 19981215 Kind code of ref document: T |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990119 |
|
REF | Corresponds to: |
Ref document number: 59504490 Country of ref document: DE Date of ref document: 19990121 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: VOITH SULZER PAPIERTECHNIK PATENT GMBH |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19981209 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20110121 Year of fee payment: 17 Ref country code: SE Payment date: 20110113 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120801 Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120120 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59504490 Country of ref document: DE Effective date: 20120801 |