CN101194069A

CN101194069A - Drying cylinder

Info

Publication number: CN101194069A
Application number: CNA200680016472XA
Authority: CN
Inventors: 赫伯特·博登; 雷纳·克洛伊霍弗; 托马斯·格鲁伯-纳德林格; 冈特·塞特尔休伯; 罗伯特·邦泽尔
Original assignee: Voith Paper Patent GmbH
Current assignee: Voith Patent GmbH
Priority date: 2005-05-13
Filing date: 2006-04-27
Publication date: 2008-06-04

Abstract

The invention relates to a drying roll for drying a fibrous material web, in particular a paper, cardboard or tissue web in a machine for producing and/or finishing said fibrous material web. The roll can be heated on the interior by a gaseous heat transfer medium and the internal surface of its jacket is provided with elevated sections that extend at least radially inwards, the height of said elevations being greater than the average radial thickness of the condensate layer that forms on the internal surface of the cylinder jacket during operation. The roll is equipped with elements that drain condensate from the condensate chamber that incorporates the areas lying between the elevations. The drying roll is characterised in that the condensate chamber or at least one condensate sub-section is in hydraulic contact with at least one front-end region of the cylinder.

Description

Drying

The present invention relates to a kind ofly in the preparation and/or the machine of modified fiber web, be used for the dried fibres breadth, the drying of paper web face, paper/paper sheet breadth or fabric web particularly, its available internally gaseous state heat-carrying agent heating, dispose in the inboard of its shell and at least mainly to be the projection that radially inwardly stretches, this protruding radial height is greater than the average radial thickness at the inboard condensation liquid layer that forms of drum shell in service, wherein, be provided with in order from the condensation sap cavity that comprises zone between the projection, to discharge the device of condensate liquid.

The main steam of using is as heat medium in this class drying.Described steam undergoes phase transition and forms condensate liquid by heat radiation when fiber web is dry.Under common machine speed because centrifugal force forms the condensation liquid layer in the inboard of drum shell.This condensation liquid layer is strong adiabatic, and is an impediment to steam and conducts heat to fiber web.

Therefore advised a kind of drying with radial groove, its rib protrudes in condensate liquid slightly.For example by the known this drying of EP 0851059A1.In known this drying, particularly relate to the Yankee formula-tube that has at the condensation liquid bath of circumferential extension.This condensate liquid is directly discharged from groove through siphon pipe.Realized stable structure as far as possible by the F-SP of this rib.

Has the shell shell that has reinforcing member and two outer shells by known drying among DE 102004017811 A1, under thin wall thickness, to avoid its distortion.

The object of the present invention is to provide a kind of improved drying that starts described type,, and particularly also can make in the mode of cheapness wherein in heat transfer that keeps being improved under the simple structure situation or higher heat flow density.

The objective of the invention is to be communicated with realization with the tube petiolarea fluid power of at least one end by condensation sap cavity or at least one condensate liquid branch chamber.

At this moment the special used vapour of this drying heating, this vapor chamber can be extended whole inner chamber at least basically or only be made up of each chamber, as described in DE 102004017811 A1.

It is preferred that tube petiolarea at least one end disposes at least one condensate discharging device.

Preferably this condensate discharging device comprises the condensate liquid afflux groove that should be circumferential.

Press the scheme of a kind of practicality of drying of the present invention, this condensate liquid afflux groove disposes at least one siphon pipe.Therefore the discharge of condensate liquid for example can realize by at least one siphon pipe of the side that becomes a mandarin.

Another favourable scheme is characterised in that, for axially discharging condensate liquid, axially is connected with its internal diameter section bigger than the tube shell at least one end of tube shell, and is provided with corresponding sealing on the tube shell.Condensate liquid is centrifugal in the case is rotated into bigger diameter, or discharges under static state.

Another aspect of the present invention, above-mentioned purpose are to derive parts by the condensate liquid that has at least one to be used to derive condensate liquid in the condensation sap cavity or at least one condensate liquid branch chamber to realize.This measure is another kind of measure or to the additional measure of the measure that is relevant to first aspect present invention.

This condensate liquid is derived parts and is preferably included siphon pipe.

In some cases, if deriving parts, condensate liquid comprises that tubule formula siphon pipe is that the thin tube-like siphon pipe is favourable.This class tubule formula siphon pipe is known by EP 0851059 A1.

Purpose of the present invention in addition also can realize by the local at least projection that is the rib shape that forms groove between it, and the ratio of the groove width of the outer bottom land that directly makes progress and rib spacing is greater than about 0.1 with less than about 0.95.This measure that is relevant to another aspect of the present invention can be an other measure scheme or combined with the measure of aforementioned at least one aspect of the present invention.

The ratio of groove width and rib spacing is preferably greater than about 0.3 and less than about 0.7.

Particularly in the tube that is formed from steel, the ratio of groove width and rib spacing is preferably in about 0.6 scope of about 0.5-.

Particularly should projection also can be screw shaped to small part.In the case, the condensate liquid contact area of tube shell to the ratio of the gross area of its inside advantageously greater than about 0.1 with less than about 0.95.

By a kind of preferred embodiment, the condensate liquid contact area of tube shell to the ratio of the gross area of its inside greater than about 0.3 with less than about 0.7.Particularly this ratio is preferably 0.5-0.6 in the tube that is formed from steel.

This condensate discharging device advantageously comprises at least one siphon pipe base part.

At least on the zone, have so cross sectional shape as this projection, promptly the angle that between each protruding two side, forms for 〉=0 and＜140 ° also be particularly advantageous.

Advantageously at the intersection point of the gradient tangent line on two side or the side wall sections radially between each projection and tube center line.

Being raised to small part as this, to have rectangular at least basically shape of cross section also be particularly advantageous.Particularly also can imagine and be trapezoidal cross sectional shape, parabola shape of cross section or triangular cross-sectional shape.

By a kind of suitable scheme, this is raised to small part and is perforation.But particularly also can imagine this scheme promptly is raised to small part and is interruption.

Yet projection also can have other cross sectional shape arbitrarily basically.Be circular arc or involute shape or square as imagining.Usually should projection preferably basically at right angles or trapezoidal sectional shape, and any curve shape that can be used for rounding or transition.

A kind of favourable practical plan of drying of the present invention is characterised in that, this is raised to small part and is made of single part, as radial screw sector of breakdown, radial bars sector of breakdown and similar portions.This correlated parts for example can support this wall mutually and/or for example also can be the type spare of vertical configuration.

Advantageously should projection each have radial height＞2mm to small part.At this moment, its radial height＞3mm particularly, practicality is＞5mm and preferred＞10mm.

The best radial height of this projection and its width, promptly for example rib width is relevant with the radially condensate liquid layer thickness in recess or groove.At this, the radial height from the projecting inward section of condensate liquid course of each projection is preferably greater than or equals this protruding half-breadth.

Average radial condensate liquid bed thickness for example is about 3mm.Average radial condensate liquid bed thickness is the average thickness of condensate liquid that is loaded with on whole inner surfaces of tube of condensate liquid.

The suitable width of each projection is about 6mm.

Particularly when average radial condensate liquid layer thickness was about 3mm and each protruding width and is about 6mm, each protruding radial height was preferably 〉=6mm.

In actual applications, Tu Qi radial height should be guaranteed high as far as possible heat flow density to all condensate liquid layer thicknesses that produce that are in operation.For this reason, by a preferred practical plan of drying of the present invention, each protruding radial height is added about 1mm more than or equal to half of the width of the projection of measuring at radially outer protruding root.

This each protruding radial height be preferably greater than or the width of the projection that equals to measure at radially outer protruding root half add about 3mm.

When average radial condensate liquid layer thickness was about 6mm for about 3mm with protruding width, each protruding radial height preferably was at least 6mm.

Disposing under the tube shell integrative-structure situation of projection, especially if each protruding radial height＜18mm is favourable.Can carry out low cost manufacturing by machining such as milling thus, have good heat flow density simultaneously as projection.

Being under the two-part structure situation, at height of projection＜18mm, promptly for example during the height when steel construction, under the conducting power of corresponding good material because improved heat conduction can have tangible improvement.Can select higher height of projection for use, to import many more heat by bigger surface.But when using as steel construction is feasible basically equally highly also.Under the situation that projection or rib are made by high thermal conductivity material such as copper, aluminium, alloy etc., height of projection＞18mm is particularly advantageous.

Particularly under the casting structure of one, consider big spacing and bigger average rib width that the foundry goods manufacturing is required, height of projection＜30mm also is favourable.

The spacing of projection or rib is suitable＜100mm, and practicality＜50mm, particularly＜30mm and preferred＜15mm.

Be the rib shape that forms groove therebetween if this is raised to small part, then average groove width to the ratio of rib spacing greater than about 0.1 with less than about 0.95.This average groove width means the mean breadth about the circumferentially extending of this groove.

In a kind of scheme of practicality, average groove width to the ratio of rib spacing greater than about 0.3 with less than about 0.7.

Particularly in the tube that is made of a steel, average groove width should be about 0.5-0.7 to the ratio of rib spacing, preferably is about 0.66.

By a favourable practical plan of drying of the present invention, be rounding in the radially transition between the outer bottom of each projection recess adjacent with each.Be the rib shape that forms groove therebetween if this is raised to small part, then the transition between each rib and bottom land is preferably also circular.Should relevant transition region not have rib clearly thus, this has prevented otherwise the notch effect that can occur, because this tube is a pressure vessel.

The radius of transition rounding that should be relevant is preferably＞1mm, and is preferred＞2mm.

Be the rib shape that forms groove therebetween if this is raised to small part, then this rib or groove should be axially or be circumferential extension to small part.

By a kind of practical plan, it is axial that all ribs or groove all are.In addition in some cases, also be favourable if all ribs or groove all are circumferential.

If rib or groove to small part is circumferential, then by another practical plan, this groove to small part interconnects through passage.

Be raised to small part at this and be under the rib shape situation that forms groove therebetween,, each groove is respectively disposed at least one condensate liquid discharge parts then by a kind of preferred practical plan.

It also is particularly advantageous that relevant groove is respectively disposed at least one siphon pipe.

Be the rib shape that forms groove therebetween if this is raised to small part, then by a favourable scheme, this rib or groove to small part also twist, thread-shaped or coiling shape extend.

By embodiment in detail the present invention is described in detail below with reference to accompanying drawing.

Brief description

Fig. 1 illustrates a kind of cross-sectional view of exemplary embodiment of drying, and its shell inboard disposes axial rib,

Fig. 2 illustrates the shell section figure of drying shown in Figure 1, and its middle rib has trapezoidal cross-section,

Fig. 3 illustrates with Fig. 2 and similarly schemes, and its middle rib has rectangular cross section,

Fig. 4 illustrates with Fig. 2 and similarly schemes, and its middle rib also has rectangular cross section, but compare it with groove width smaller is arranged,

Fig. 5 illustrates with Fig. 2 and similarly schemes, and its middle rib has the parabola cross section,

Fig. 6 illustrates with Fig. 2 and similarly schemes, and its middle rib has rounded substantially cross section,

Fig. 7 illustrates with Fig. 2 and similarly schemes, and its middle rib has triangular cross section,

Fig. 8 illustrates with Fig. 2 and similarly schemes, but wherein dispose rib the tube shell have many parts structure,

Fig. 9 illustrates the cross-sectional view of another embodiment of this drying, and its shell inboard disposes the rib of circumferential extension,

Figure 10 illustrates the shell section figure of the drying of Fig. 9, and this rib has trapezoidal cross-section,

Figure 11 illustrates with Figure 10 and similarly schemes, and its middle rib has rectangular cross section,

Figure 12 illustrates with Figure 10 and similarly schemes, and its middle rib also has rectangular cross section, but compare it with groove width smaller is arranged,

Figure 13 illustrates with Figure 10 and similarly schemes, and its middle rib has the parabola cross section,

Figure 14 illustrates with Figure 10 and similarly schemes, and its middle rib has rounded substantially cross section,

Figure 15 illustrates with Figure 10 and similarly schemes, and its middle rib has triangular cross section,

Figure 16 illustrates with Fig. 2 and similarly schemes, but wherein dispose rib the tube shell have many parts structure,

Figure 17 illustrates the part longitdinal cross-section diagram of a kind of another embodiment of drying, and it has the condensate liquid afflux groove in the configuration of end face tube district, and this groove is designed to condensation liquid bath inside the shell,

Figure 18 illustrates the cross-sectional view along the I-I line among Figure 17 in this drying end face tube district of Figure 17,

Figure 19 illustrates the part longitdinal cross-section diagram of a kind of another embodiment of drying, and it has axially extended condensate liquid header, wherein is connected with many little siphon pipes, and these little siphonal other ends are charged in the groove of shell inboard,

Figure 20 illustrates drying shown in Figure 19 cross-sectional view along the I-I line of Figure 19,

Figure 21 illustrates with Fig. 2 or 10 and similarly schemes, and is used for the geometry of the rib of the exemplary practicality of diagram,

Figure 22 illustrates similar another exemplary rib geometry with Figure 21,

Figure 23 illustrates similar another exemplary embodiment with Figure 21.

Fig. 1 illustrates a kind of cross-sectional view of a kind of exemplary embodiment of the drying 10 that is used for the dried fibres breadth in the preparation and/or the machine of modified fiber web.Described fiber web is paper web face, paper/paper sheet breadth or fabric web particularly.

This drying 10 is used the gaseous state heat-carrying agent internally, as Steam Heating particularly.

Dispose the projection 14 that radially inwardly stretches basically in the inboard of tube shell 12.The radial height H of this projection 14 _EThe average radial thickness D of the condensation liquid layer 16 that in tube shell inboard 12, forms in during greater than fortune _K(particularly seeing Figure 21-23).

The average radial thickness D of this condensation liquid layer _KThe mean value of the different condensate liquid bed thickness that meaning is in operation forms on the total inner surface of tube shell 12.

The device of discharging condensate liquid from the condensation sap cavity that is included in zone between the projection 14 also will be described in detail in detail below.This condensation sap cavity can be formed or is divided into condensate liquid branch chamber by single chamber.

This condensate liquid is discharged parts through condensate liquid and is discharged from condensation sap cavity or condensate liquid branch chamber.

Advantageously this condensation sap cavity or at least one condensate liquid branch chamber are fluid with the tube petiolarea that is a few front end and are connected (for example seeing Figure 17 and 18).

In the present embodiment, this projection 14 is formed by axial rib.Therefore the groove that exists between it also is axial.

Fig. 2 illustrates the partial sectional view A of the shell 12 of drying shown in Figure 1 10.As seen from Figure 2, this rib shape projection 14 for example has trapezoidal cross-section in the case.The end and the transition between the rib shape projection 14 at groove 18 are rounded, and its radius is r.

Fig. 3 illustrates with Fig. 2 and similarly schemes, but wherein this rib shape projection 14 for example has rectangular cross section.Transition between groove 18 and rib shape projection 14 is also rounded.

Fig. 4 illustrates with Fig. 2 and similarly schemes, and this rib shape projection 14 also has rectangular cross section.But comparing with groove 18, it has littler width B.

Fig. 5 illustrates with Fig. 2 and similarly schemes, and wherein this rib shape projection 14 has the parabola cross section.

As seen from Figure 5, the intersection point 22 of the gradient tangent line 24 of this two side radially between each rib shape projection 14 and tube center line 26 (also visible Fig. 1).

Fig. 6 also illustrates with Fig. 2 and similarly schemes.But this rib shape projection 14 has rounded basically cross section in this embodiment.

Transition between groove 18 and rib shape projection 14 also can be rounded.The transition of circle on the free end of rib shape projection and rounding is by different radius r in this embodiment ₁Or r ₂Definition.

Fig. 7 illustrates with Fig. 2 and similarly schemes, and wherein this rib shape projection 14 has triangular cross section.But the transition between groove 18 and rib shape projection 14 is rounding also, and its radius is r in the case.

In the various embodiment of Fig. 1-7, this tube shell 12 that disposes rib shape projection 14 has integrative-structure.

In contrast, Fig. 8 with have shown in the similar figure of Fig. 2 many parts structure the tube shell 12 partial sectional view.This rib shape projection 14 and shell separate construction.As can be seen from Figure 8, this rib shape projection 14 is configured in shell and separates on the inner casing 28 that forms.

This rib shape projection 14 for example also has rectangular cross section.

Fig. 9 illustrates another embodiment of this drying 10 with cross-sectional view, and the inboard of its shell 12 disposes rib shape projection 14.But this rib shape projection 14 is circumference U trend in this embodiment.Therefore groove 18 therebetween also has the trend that is circumference U.

Figure 10 illustrates corresponding to axial cross section, by the partial sectional view of the shell 12 of drying 10 shown in Figure 10.

This rib shape projection 14 for example has trapezoidal cross-section in this embodiment.Transition between groove 18 and rib shape projection 14 is also rounded, for example is r at this its radius.

Figure 11 illustrates with Figure 10 and similarly schemes, and wherein this rib shape projection 14 has rectangular cross section.Transition between groove 18 and rib shape projection 14 is also rounded, for example is r at this its radius.

Another is shown Figure 12 and Figure 10 similarly schemes, and wherein this rib shape projection 14 also has rectangular cross section.But in the case, compare this projection 14 with groove 18 and have width smaller.

Figure 13 illustrates with Figure 10 and similarly schemes, but wherein this rib shape projection 14 has the parabola cross section.

The intersection point of the gradient tangent line 24 of this two side also is radially between each rib shape projection 14 and tube center line 26 (referring to Fig. 9).

Another and Figure 10 shown in Figure 14 similarly scheme.In the case, this rib shape projection 14 also has rounded substantially cross section.Transition between groove 18 and rib shape projection 14 is also rounded, and its radius for example is r.

Another is shown Figure 15 and Figure 10 similarly schemes, but wherein this rib shape projection 14 has triangular cross section.Transition between groove 18 and rib shape projection 14 is also rounded, and its radius of a circle also for example is r.

Be in the rib shape projection 14 and groove 18 exemplary embodiments that circumference moves towards the U (see figure 9) having of providing of Fig. 9-15, this tube shell 12 that disposes projection 14 has integrative-structure.

In contrast, Figure 16 illustrates similarly the scheming with Figure 10 of respective cross-section of the tube shell 12 with many parts structure.This projection 14 and groove therebetween 18 also are circumference and move towards U.Separate on the inner casing 28 of the tube shell 12 that forms but should projection 14 be configured in shell.This rib shape projection 14 for example also has rectangular cross section.

Figure 17 illustrates another embodiment of a kind of drying 10 with longitudinal cross-section-part diagrammatic sketch, and it has the condensate liquid afflux groove 30 in 20 configurations of end face tube petiolarea, and this groove is designed to condensation liquid bath inside the shell.As can be seen from Figure 17, this bottom land more deeply promptly radially is positioned at the outside (as also can be referring to Fig. 1) of the substrate 32 of each groove 18.

Here this rib shape projection 14 for example is vertical.The condensate liquid afflux groove of configuration or condensate liquid afflux ditch 30 are the circumference trend at least one that goes up inside the shell petiolarea 20.

As shown in figure 17, the groove 18 that forms between rib shape projection 14 (as also can be referring to Fig. 1) flows in the condensate liquid afflux groove 30.Condensate liquid is for example through fixing or rotation, thus the siphon pipe 34 with one or more siphon heads 36 from condensate liquid afflux groove 30, discharge, condensate liquid 38 is discharged from drying 10 in the side.

As described, this this for example comprise one or more siphonal condensate liquids derive parts can be only at one or also can in two tube petiolareas 20, dispose.Especially under rotary siphon pipe unit situation, a plurality of siphon pipes of configuration that can be suitable in the condensate tank(trap) of tube end.

Figure 17 only illustrates the left section of going up of this drying 10, and it comprises that left-hand cylinder district 20 is up to median plane 40.

Figure 18 illustrates the cross-sectional view along the line I-I of Figure 17 by the end face tube petiolarea 20 of the drying of Figure 17.As can be seen from Figure 18, this rib shape projection 14 for example also has trapezoidal cross-section.

Figure 19 illustrates another embodiment of the drying 10 with axial condensate liquid header 42 with longitudinal cross-section-part diagrammatic sketch, many tubule formula siphon pipes 44 flow in this header, and these siphonal other ends are charged in the setting groove 18 (referring to Figure 20) inside the shell.

In the case, dispose axially continuous rib shape projection 14.So the groove 18 (referring to Figure 20) between the projection also is axial.

In each groove 18, can charge into one or more tubule formula siphon pipe 44, so that derive condensate liquid and condensate liquid is imported in the condensate liquid header 42.Preferred each groove 18 respectively disposes at least one tubule formula siphon pipe 44.

Figure 20 illustrates the cross-sectional view along the line I-I of Figure 19 by the drying 10 of Figure 19.As shown in figure 20, each groove 18 all disposes radially in the case, the tubule formula siphon pipe 44 that is connected with axial condensate liquid header 42.These tubule formula siphon pipes 44 also can be axial distribution (referring to Figure 19).

Projection 14 also can be the rib shape that forms groove 18 between it to small part.The groove width B of the outer bottom land that makes progress of footpath advantageously _NGWith rib spacing T _RRatio greater than about 0.1 with less than about 0.95, be preferably greater than about 0.3 and less than about 0.7 (for example seeing Figure 21).In the drying 10 that is formed from steel, this groove width B _NGWith rib spacing T _RRatio be preferably for 0.5 (as seeing Figure 22).

Figure 21 illustrates with Fig. 2 or 10 and similarly schemes, and is used for the geometry of the rib of the exemplary practicality of diagram.As described in, groove width B _NGWith rib spacing T _RRatio should be greater than about 0.1 with less than about 0.95, be preferably greater than about 0.3 and less than about 0.7.

In this embodiment, the width B that is each rib shape projection 14 of trapezoidal cross-section at least basically in the bottom _EBFor example be about 6mm, in free-ended width B _EEFor example be about 2mm.The groove width B of the outer bottom land that the footpath makes progress _NGBe about 6mm.Transition between groove 18 and rib shape projection 14 for example can be circle.Under this situation, this radius of a circle r=2.5mm.But also can be other radius in principle.The radial height H of rib shape projection 14 _EFor example be about 5-10mm.The spacing T of rib shape projection 14 _RFor example be 12mm.Radially inwardly be connected with the radial height H of the outside base segment 46 in footpath of the tube shell 12 of rib shape projection 14 on it _BIn about 20-25mm scope.

Figure 22 illustrates the embodiment with similar another the exemplary rib geometry of Figure 21.In the case, for example rectangular cross section of rib shape projection 14.The groove width B of the outer bottom land that the footpath makes progress _NGFor example be about 50mm.The radial height of each rib shape projection 14 for example is 25mm.The spacing of rib shape projection 14 for example is about 100mm.

In the case, groove width B _NGWith rib spacing T _RRatio as being 0.5, this is favourable under drying 10 situations that are formed from steel especially.

Figure 23 illustrates similar another exemplary embodiment with Figure 21, and its middle rib shape projection 14 for example has rectangular cross section.

The width of each projection 14 " B _E" expression, the radial height of each projection 14 is by " H _E" expression.The radial thickness of the condensation liquid layer that on the inboard of tube shell 12, forms " D _K" expression.

When particularly rib was formed from steel, each size that provides preferably was suitable for following formula:

H _E-D _K＝B _E/2

Compare with aluminium or copper, steel has the heat transfer property of non-constant.Therefore, big in the case rib height is not highly significant.But need certain rib width, with guiding energy.

The radial measurement thickness D of condensation liquid layer 16 _KAlso can refer in particular to the average thickness of this condensation liquid layer.

Reference numeral

10 dryings

12 shells

14 projections

16 condensation liquid layers

18 grooves

20 petiolareas

22 intersection points

24 gradient tangent lines

26 centers

28 inner casings

30 condensate liquid afflux grooves

32 bottom lands

34 condensate liquid let-off gear(stand)s, condensate liquid export element, siphon pipe

36 siphon heads

38 condensate liquids

40 intermediate layers

42 cooling fluid headers

44 cooling fluid let-off gear(stand)s, cooling fluid export element, tubule siphon pipe

46 base segments

B _EWidth

B _EBProjection is at the width of bottom

B _EEProjection is at free-ended width

B _NGGroove is at the width of bottom land

D _KThe average thickness of condensate liquid

H _BThe radial height of shell base segment

H _EThe radial height of projection

T _RThe spacing of rib shape projection

U is circumferential

The r radius

Claims

1. one kind is used for the dried fibres breadth in the machine of preparation and/or modified fiber web, the drying of paper web face, paper/paper sheet breadth or fabric web (10) particularly, the available internally gaseous state heat-carrying agent heating of this drying (10), dispose in the inboard of its shell (12) and at least mainly to be the projection (14) that radially inwardly stretches, the radial height (H that these are protruding _E) greater than the average radial thickness (D at the inboard condensation liquid layer that forms of drum shell (12) in service _K), wherein, be provided with the device (30,34,42,44) that condensate liquid is discharged from the condensation sap cavity that comprises zone between the projection, it is characterized in that this condensation sap cavity or at least one condensate liquid divide distolateral tube petiolarea (20) fluid power of chamber and at least one to be communicated with.

2. according to the described drying of claim 1, it is characterized in that, dispose at least one condensate discharging device (30,34) at least one distolateral tube petiolarea (20).

3. according to the described drying of claim 2, it is characterized in that described condensate discharging device (30,34) comprises a condensate liquid afflux groove (30).

4. according to the described drying of claim 3, it is characterized in that described condensate liquid afflux groove (30) is along circumferential extension.

5. according to claim 3 or 4 described dryings, it is characterized in that described condensate liquid afflux groove (30) disposes at least one siphon pipe (34).

6. according to the described drying of claim 1, it is characterized in that,, at least one end of tube shell, axially be connected with its internal diameter section bigger, and on the tube shell, be provided with corresponding sealing than tube shell (12) for axially discharging condensate liquid.

7. one kind is used for the dried fibres breadth in the machine of preparation and/or modified fiber web, the drying of paper web face, paper/paper sheet breadth or fabric web (10) particularly, the available internally gaseous state heat-carrying agent heating of this drying (10), dispose in the inboard of its shell (12) and at least mainly to be the projection (14) that radially inwardly stretches, the radial height (H that this is protruding _E) greater than the average radial thickness (D at the inboard condensation liquid layer that forms of drum shell (12) in service _K), wherein, especially as described in above-mentioned each claim, be provided with the device (30,34,42,44) of from the condensation sap cavity that comprises zone between the projection, discharging condensate liquid, it is characterized in that in this condensation sap cavity or at least one condensate liquid branch chamber, having at least one to be used to derive the condensate liquid derivation parts (44) of condensate liquid.

8. according to the described drying of claim 7, it is characterized in that described condensate liquid is derived parts (44) and comprised siphon pipe.

9. according to the described drying of claim 8, it is characterized in that described condensate liquid is derived parts and comprised tubule formula siphon pipe (44), that is the thin tube-like siphon pipe.

10. one kind is used for the dried fibres breadth in the machine of preparation and/or modified fiber web, the drying of paper web face, paper/paper sheet breadth or fabric web (10) particularly, the available internally gaseous state heat-carrying agent heating of this drying (10), dispose in the inboard of its shell (12) and at least mainly to be the projection (14) that radially inwardly stretches, the radial height (H that this is protruding _E) greater than the average radial thickness (D at the inboard condensation liquid layer that forms of drum shell (12) in service _K), wherein, especially as described in above-mentioned each claim, be provided with the device (30,34,42,44) of from the condensation sap cavity that comprises zone between the projection, discharging condensate liquid, it is characterized in that, the local at least rib shape that forms groove between it and the groove width (B of the outer bottom land that directly makes progress of being of described projection (14) _NG) and rib spacing (T _R)Ratio greater than about 0.1 with less than about 0.95.

11., it is characterized in that described groove width (B according to the described drying of claim 10 _NG) and rib spacing (T _R) ratio greater than about 0.3 with less than about 0.7.

12. according to the described drying of claim 11, it is characterized in that, particularly when this drying is formed from steel, described groove width (B _NG) and rib spacing (T _R) ratio be about 0.5-0.6.

13., it is characterized in that described projection (14) is screw-like in the part at least according to the described drying of one of claim 1-9.

14., it is characterized in that the condensate liquid contact area (A of described tube shell according to the described drying of claim 13 _KF) to the gross area (A of its inside _Ges) ratio greater than about 0.1 with less than about 0.95.

15., it is characterized in that the condensate liquid contact area (A of described tube shell according to the described drying of claim 14 _KF) to the gross area (A of its inside _Ges) ratio greater than about 0.3 with less than about 0.7.

16. according to the described drying of claim 15, it is characterized in that, particularly in the drying that is formed from steel (10), the condensate liquid contact area (A of this shell _KF) to the gross area (A of its inside _Ges) ratio be approximately 0.5-0.6.

17., it is characterized in that described condensate discharging device (30,34,42,44) comprises at least one siphon pipe base part (34,44) according to one of aforesaid right requirement described drying.

18. one of require described drying according to aforesaid right, it is characterized in that described projection (14) has such shape of cross section at regional area at least, that is, make the angle that between the two side of each projection (14), forms be 〉=0 and＜140 °.

19., it is characterized in that the intersection point (22) of described gradient tangent line (24) on two side or side wall sections radially is positioned between each projection (14) and the described tube center line (26) according to the described drying of claim 20.

20., it is characterized in that described projection (14) to small part has rectangular at least basically shape of cross section according to one of aforesaid right requirement described drying.

21., it is characterized in that described projection (14) has the shape of cross section that is trapezoidal at least basically to small part according to one of aforesaid right requirement described drying.

22. one of require described drying, it is characterized in that described projection (14) to small part has and is parabolical shape of cross section at least basically according to aforesaid right.

23., it is characterized in that described projection (14) to small part has shape of cross section triangular in shape at least basically according to one of aforesaid right requirement described drying.

24. one of require described drying, it is characterized in that described projection (14) to small part is perforation according to aforesaid right.

25. one of require described drying, it is characterized in that described projection (14) to small part is interruption according to aforesaid right.

26., it is characterized in that described projection (14) to small part is made up of each part according to one of aforesaid right requirement described drying.

27., it is characterized in that described projection (14) to small part is made of radial screw class part according to the described drying of claim 26.

28., it is characterized in that described projection (14) to small part is made of component of rod category radially according to claim 26 or 27 described dryings.

29. one of require described drying, it is characterized in that described projection (14) has radial height (H to small part respectively according to aforesaid right _E)＞2mm.

30., it is characterized in that described projection (14) has radial height (H to small part respectively according to the described drying of claim 29 _E)＞3mm.

31., it is characterized in that described projection (14) has radial height (H to small part respectively according to the described drying of claim 30 _E)＞5mm.

32., it is characterized in that described projection (14) has radial height (H to small part respectively according to the described drying of claim 31 _E)＞10mm.

33. one of require described drying according to aforesaid right, it is characterized in that, described each projection (14) be preferably greater than or equal the half-breadth of this projection (14) to the radial height of projecting inward section from condensation liquid layer (16).

34., it is characterized in that described average radial condensate liquid layer thickness (D according to one of aforesaid right requirement described drying _K) be about 3mm.

35., it is characterized in that the width (B of each projection (14) according to one of aforesaid right requirement described drying _E) be about 6mm.

36., it is characterized in that, particularly at average radial condensate liquid layer thickness (D according to one of aforesaid right requirement described drying _K) when being about 6mm with each protruding width for about 3mm, the radial height (H of each projection (14) _E) 〉=6mm.

37., it is characterized in that the radial height (H of each projection (14) according to one of aforesaid right requirement described drying _E) add about 1mm more than or equal to the half width of the projection of measuring at the protruding root of radially outer (14).

38., it is characterized in that the radial height (H of each projection (14) according to the described drying of one of claim 1-36 _E) add about 3mm more than or equal to the half width of the projection of measuring at the protruding root of radially outer (14).

39., it is characterized in that, particularly at average radial condensate liquid layer thickness (D according to one of aforesaid right requirement described drying _K) be about the width (B of 3mm and each projection (14) _E) when being about 6mm, the radial height of each projection (14) is at least 6mm.

40. according to one of aforesaid right requirement described drying, it is characterized in that, disposing under the situation that shell (12) is structure as a whole of projection (14) radial height＜18mm of each projection (14) especially.

41., it is characterized in that the spacing＜100mm of described each projection (14) according to one of aforesaid right requirement described drying.

42., it is characterized in that the spacing＜50mm of described each projection (14) according to the described drying of claim 41.

43., it is characterized in that the spacing＜30mm of described each projection (14) according to the described drying of claim 42.

44., it is characterized in that the spacing＜15mm of described each projection (14) according to the described drying of claim 43.

45., it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween, and average groove width (B according to one of aforesaid right requirement described drying _NG) to rib spacing (T _R) ratio greater than about 0.1 with less than about 0.95.

46., it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween according to the described drying of claim 45, and average groove width (B _NG) to rib spacing (T _R) ratio greater than about 0.3 with less than about 0.7.

47. according to the described drying of claim 46, it is characterized in that, particularly in the drying that is made of a steel (10), average groove width (B _NG) to rib spacing (T _R) ratio be about 0.5-0.8, particularly 0.5-0.7 preferably is about 0.66.

48. one of require described drying according to aforesaid right, it is characterized in that, be the rounding transition in the radially transition between the outer bottom of each projection (14) recess (18) adjacent with each.

49., it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween according to the described drying of claim 48, and the transition between each rib and the bottom land is the rounding transition.

50., it is characterized in that the radius＞1mm of described transition rounding according to claim 48 or 49 described dryings.

51., it is characterized in that the radius＞2mm of described transition rounding according to the described drying of claim 50.

52. according to one of aforesaid right requirement described drying, it is characterized in that the described small part that is raised to is the rib shape (14) that forms groove (18) therebetween, and described rib (14) extends vertically with groove (18) to small part.

53., it is characterized in that all rib (14) extends vertically with groove (18) according to the described drying of claim 52.

54. according to one of aforesaid right requirement described drying, it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween, and described rib (14) extends along the circumferential direction with groove to small part.

55., it is characterized in that all rib (14) all along the circumferential direction extends with groove (18) according to the described drying of claim 54.

56., it is characterized in that described each groove (18) to small part is interconnected through passage according to claim 54 or 55 described dryings.

57. according to one of aforesaid right requirement described drying, it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween, each groove (18) disposed at least one condensate liquid respectively discharge parts (44).

58. according to the described drying of claim 57, it is characterized in that, relevant groove (18) disposed at least one siphon pipe (44) respectively.

59. one of require described drying, it is characterized in that described projection (14) to small part is the rib shape that forms groove (18) therebetween, and described rib (14) or groove (18) are to small part is linear in the shape of a spiral, screw thread is linear or coiling shape is extended according to aforesaid right.