CN104105828A - Insulation system for a Yankee cylinder - Google Patents
Insulation system for a Yankee cylinder Download PDFInfo
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- CN104105828A CN104105828A CN201380008554.XA CN201380008554A CN104105828A CN 104105828 A CN104105828 A CN 104105828A CN 201380008554 A CN201380008554 A CN 201380008554A CN 104105828 A CN104105828 A CN 104105828A
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- Prior art keywords
- heat insulating
- insulating panel
- bolt
- insulation system
- end head
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
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- Paper (AREA)
- Electrophonic Musical Instruments (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Seal Device For Vehicle (AREA)
Abstract
The insulation for the end heads (13) of a Yankee cylinder (2) comprises a plurality of insulating panels (51) and a fastening ring divided into at least two portions (81) and engageable with a support and rotation structure (3) of the Yankee cylinder (2). The fastening ring has fastening screw members (87, 88) to constrain each insulating panels in a first radially inner portion. For each insulating panel (51) it is also provided at least one intermediate fastening element (91), configured to be constrained to at least one head of a screw (23) provided on the end head of the Yankee cylinder, at a radial distance from said support and rotation structure. The intermediate fastening element defines at least one fastening point for the respective insulating panel.
Description
Technical field
The present invention relates to the improvement to the so-called Yankee formula cylinder (Yankee cylinder) for papermaking.
Background technology
According to most of conventional arts, paper is to start to manufacture from the aqueous slurry of other possibility additive of cellulose fiber peacekeeping, the dry matter content that this aqueous slurry has very low (being the mark level of percentage point by weight).
The flow box of slurry from fourdrinier wire supplied with, and the step by is subsequently between grid and felt, by means of suction system, water content in slurry reduces gradually until obtain film or the thin layer of cellulose fibre, the water content of this film or thin layer is enough low to have certain consistency, thereby allows film to pass through drying system.Machine at some for papermaking, drying system comprises Yankee formula cylinder, this is a kind of cylinder of inner hollow, within it portion's heat-exchange fluid (being generally steam) that circulating.By evaporation, be dried paper roll (that is: the reduced water content of paper roll), this evaporation has consumed the heat of transmitting through its lateral wall from Yankee formula cylinder, and the film of papermaking material drives along this lateral wall of Yankee formula cylinder.
Some examples of Yankee formula cylinder are disclosed in US-A-3224084, US-A-3116985, US-A-3911595, US-A-3914875, US-A-4320582, GB-685009.
Traditionally, Yankee formula cylinder adopts cast iron manufacture.Proposed recently to adopt steel to manufacture Yankee formula cylinder, as disclosed example in WO-A-2006/057023, WO-A-2008/105005.
Steel Yankee formula cylinder is manufactured by welding conventionally, comprises the cylindrical outer surface being formed by cylindrical housings, and the end of this cylindrical housings is fixed on end head (end heads).Connect and conventionally adopt welding to realize.End head is from the supporting pin of external bearer cylinder.Between end head and housing, limit the internal capacity of the hollow of Yankee formula cylinder, steam enters in this internal capacity to heat the outer surface of Yankee formula cylinder.
The end head of steel Yankee formula cylinder is flat generally, with the end head contrary (this end head has crooked shape, has concave surface outward) of the Yankee formula cylinder that adopts cast iron to manufacture.The example of steel Yankee formula cylinder is disclosed in WO-A-2008/105005.
The steam injecting in Yankee formula cylinder must be by cylindrical surface to paper roll transferring heat.Used heat by end head surface has formed energy loss.US-A-4520578 discloses a kind of Yankee formula cylinder cast iron manufacture, that have female end size portion that adopts, and this Yankee formula cylinder is provided with insulation system, and its function is for reducing the heat waste via end head.Other insulation system of Yankee formula cylinder and/or other dry cylinder is disclosed in WO-A-82/03909, US-A-4321759, US-A-4454660, US-A-4399169, US-A-4506459, US-A-4372055, US-A-4241518, US-A-4313267.All these insulation systems, along the circumferentially anchoring of end head, utilize the bolt head that end head is connected to cylinder housing as anchor point.Therefore, these insulation systems are not suitable for and carry out heat insulation to the end head of Yankee formula cylinder steel, welding.
WO-A-2011/030363 discloses a kind of for steel Yankee formula cylinder is carried out to heat insulation system.This system is designed for does not especially adopt bolt cylinder end size portion to be connected to the Yankee formula cylinder of housing.It is provided for welding a circumferential hoop along the outward flange of end head, to generate the fixing point of insulation system, on the head of end, does not introduce and weakens area.This system is effective especially, and solution and the heat insulation relevant many problems of Yankee formula cylinder.Yet it is difficult to be applied to already installed cylinder.By welding, apply retainer ring and carry out in the interstage that forms Yankee formula cylinder, therefore by welding tension force and the distortion introduced, can adopt suitable heat treatment and machine-tooled method to eliminate.These operations can only be implemented during building, and under any circumstance all need the working space of proper mating; These operations are implemented after can not be on Yankee formula cylinder has been installed in for the machine of papermaking.
Summary of the invention
For solving all or part of problem of the prior art, the invention provides the insulation system for Yankee formula cylinder end size portion, this system configures by this way, it can be applied on the end head of Yankee formula cylinder of installment work, and especially those do not place in advance the end head of the Yankee formula cylinder of insulation system during building.
According to some embodiment, insulation system of the present invention can be by especially for steel Yankee formula cylinder, and this cylinder does not possess suitable point (for example,, for end head being clamped to the head of the bolt of housing) for fastening insulation system.In preferred embodiment especially, each insulation system can be fixed in corresponding cylinder head, and does not need necessary mechanical processing process.
Substantially, in one embodiment, insulation system becomes to comprise in combination:
-a plurality of heat insulating panels;
-being divided into support at least two parts, that can be engaged to Yankee formula cylinder and the dead ring of rotational structure, described dead ring has bolt part to retrain heat insulating panel described in each in the first radially interior position;
-for tightening member in the middle of at least one of each heat insulating panel, in the middle of this at least one, tightening member is configured to be bound at least head of the bolt the head that mode with certain radial distance of being separated by from described support and rotational structure is located at Yankee formula cylinder, described bolt head by the end head of Yankee formula cylinder provide, from supporting the radial distance starting with rotational structure, described in the middle of tightening member limit at least one fastening point for corresponding heat insulating panel.
For supporting and rotational structure, it means Yankee formula cylinder to be rotatably bonded on the parts on support and swivel bearing generally.This structure comprises pin and flange conventionally on each head.Dead ring can suitably be manufactured to be fixed on the flanged periphery of pin (cylinder rotates around it).
In a possible embodiment, each heat insulating panel radially protrudes from outside described at least one fastening point, and has end abutting part, with butt be applied with insulation system the head of Yankee formula cylinder.
Insulation system can further comprise the clamp structure for tightening member in the middle of each, this clamp structure makes middle tightening member and corresponding heat insulating panel retrain each other, and this clamp structure is designed to allow heat insulating panel to have differentiated thermal deformation with respect to end head.For example, clamp structure can comprise that, for the bolt of each fastening point and loosing prevention device, described bolt can be bonded in the screwed hole of clamp structure; And corresponding to each fastening point, each heat insulating panel can have for supplying the current hole of bolt, and described hole has than the large diameter dimension of diameter dimension of the screw rod by it, to allow the differentiated thermal expansion between heat insulating panel and middle tightening member.In certain embodiments, loosing prevention device can comprise the plate bolted joints adjacent with two, that have flanging portion, and the flanging portion of this plate is folded into stop the rotation of bolt.
Can use different loosing prevention devices.For example, loosing prevention device can comprise and bolt head and slot (i.e. hole on heat insulating panel) interactional loosing prevention lasso (rosette).
In certain embodiments, tightening member comprises the first grip bolt with the first housing in the middle of each, and described the first housing can engage with the bolt head on the end head of Yankee formula cylinder.In certain embodiments, at least partly middle tightening member comprises the second grip bolt, and this second grip bolt has the second housing, in order to the bolt head on the end head with Yankee formula cylinder, engages.
The middle tightening member of middle tightening member or at least a portion can comprise one, two or more associate member, and each associate member is formed for the corresponding fastening point of corresponding heat insulating panel.For example, middle tightening member can have symmetric shape,, can be fork-like shape, there is two associate members or the extension that from center main or shank (leg), stretch out, this associate member or extension will be fixed to one or two head of corresponding bolt being located in cylinder head, and described associate member or extension extend to form fastening point, and these fastening point are radially spaced apart with respect to the axis of Yankee formula cylinder that must be fixed with heat insulating panel.
In certain embodiments, each heat insulating panel has two radial edges that are preferably straight line.Two anchor points for tightening member in the middle of heat insulating panel is fastened to are preferably adjacent with the radial edges of heat insulating panel, and the region of being strengthened with the profile elements by suitable (profiles) provides more effectively and more reliable fastening effect.
In certain embodiments, each heat insulating panel comprises radially inward flange (developing into circular arc), which is provided with for for the current hole of bolt so that heat insulating panel is fastened to dead ring.In addition, each heat insulating panel comprises radially outermost edge, is also preferably circular arc.Between outermost edge radially and radially inward flange, each plate have two radially, the edge of straight shape roughly, this edge extends to radially outermost edge from radially inward flange.
Advantageously, middle fastening point is arranged between described radially inward flange and the described radially centre position between outermost edge, preferably by proximal straight type edge.
In certain embodiments, described in each, heat insulating panel comprises the plate that forms garlands section, and this plate forms the roughly radial edges of straight shape of round-shaped radially outermost edge, round-shaped radially inward flange and two.Advantageously, along every roughly the radial edges of straight shape be applied with corresponding profile elements, this profile elements has and the plate alar part of quadrature roughly, and facing to the cylinder head that is applied with heat insulating panel.Described alar part allows for strengthening the structure of plate.
In a possible embodiment, for each heat insulating panel, the first profile elements that the first radial edges in described radial edges applies is outstanding with respect to this first radial edges, and the second profile elements that the second radial edges in described radial edges applies arranges backward with respect to this second radial edges.In addition, between the second radial edges and the second profile elements, on described plate, preferably manufacture and have through hole, current for the bolt for the radial edges of adjacent heat insulating panel is connected.The attachment bolt that inserts the through hole of the first heat insulating panel is bonded in the screwed hole in the first profile elements that is located at the second adjacent heat insulating panel.
Radially outermost edge along circle can be applied with abnormal shape (profiled) element, for example, has the shaped element of L shaped cross section, and this shaped element has the alar part that is roughly orthogonal to described plate, and can be provided with seal.
Seal forms against the supporting member of the sealing of Yankee formula cylinder head outer surface.
The plate surface of each heat insulating panel can be applied with insulation material layer, and this plate surface is arranged to face corresponding cylinder head when heat insulating panel is applied on Yankee formula cylinder.
In order to make it possible to be easily applied to already installed Yankee formula cylinder, dead ring is formed by more parts, preferably by two substantially equal part form, these parts by grip bolt preferably along being tangentially bonded together.
Therefore for obtaining, better interconnect and obtain larger mechanical strength, in a preferred embodiment, the shape and size of design heat insulating panel, so that it is arranged to along corresponding radial edges is partly overlapping.
Destination object of the present invention is also a kind of Yankee formula cylinder, this Yankee formula cylinder comprises cylindrical housings, two cylinder end size portions and from described end head shaft to outward extending support and rotational structure, described cylinder comprises the insulation system with one or more aforementioned feature described in each on the head of end.Especially, Yankee formula cylinder comprises the end head that does not only use bolt to be connected with housing by welding.Preferably, Yankee formula cylinder comprises the interior bar that is connecting two end heads, and this interior bar is by means of bolt and two end head Colaesces, and the middle tightening member of heat insulating panel can be fixed thereon.
Above-mentioned summary description defines some features of various embodiment of the present invention, to understand better detailed description below and for better its contribution with respect to prior art of assessment.Certainly, the present invention also has some other feature to be described below and to state in appended claims, and these have also formed the part of this description.For this reason, before in detail explaining various embodiment of the present invention, should be appreciated that various embodiment of the present invention is not limited in by subsequent descriptions or adopts accompanying drawing explanation and CONSTRUCTED SPECIFICATION and the parts cloth of statement are set up in their application.The present invention allows other embodiment and can put into practice in a different manner and carry out.In addition, should be appreciated that the only object for describing of wording used herein and term, should not be understood to restriction.
In addition, those skilled in the art will be appreciated that based on concept of the present invention can by an easy rate as basis for the design of other structure, method and/or system, to realize all types of target object of the present invention.Therefore importantly to think that claims comprise that those are not different from the embodiment of equal value of the spirit and scope of the present invention.
Accompanying drawing explanation
Knowing more comprehensively of the embodiment of the present invention described herein known and relative most of advantage, and the detailed description that can carry out with reference to following associating accompanying drawing is better understood.In the accompanying drawings:
Fig. 1 has shown the longitudinal sectional view that there is no the Yankee of insulation system formula cylinder;
Fig. 2 has shown the front view of independent heat insulating panel;
Fig. 3, Fig. 4, Fig. 5 have shown respectively line III-III, line IV-IV along Fig. 2 and the partial sectional view of line V-V;
Fig. 6 has shown the front view of independent dead ring;
Fig. 7 has shown along the partial sectional view of the line VII-VII in Fig. 6;
Fig. 8 has shown along the zoomed-in view of the line VII-VII in Fig. 6;
Fig. 9 has shown the enlarged drawing in the indicated region of IX-IX in Fig. 6;
Figure 10 has shown the front view of independent middle tightening member;
Figure 11 has shown along the view of the line XI-XI in Figure 10;
Figure 12 shown Fig. 1 Yankee formula cylinder of being provided with after insulation system according to the front view of XII-XII;
Figure 13 has shown along the cutaway view of the line XIII-XIII in Figure 12;
Figure 14 and Figure 15 have shown the enlarged drawing of details place XIV and XV in Figure 13;
Figure 14 A has shown along the view of the line A-A in Figure 14;
Figure 16 has shown the enlarged drawing of the XVI of details place in Figure 12;
Figure 17 has shown the enlarged drawing of the XVII of details place in Figure 13;
Figure 18 has shown along the cutaway view of the line XVIII-XVIII in Figure 12.
The specific embodiment
Following to the detailed description of exemplary embodiment referring to accompanying drawing.The roughly the same Reference numeral repeating in different accompanying drawings represents same or analogous element.Accompanying drawing unnecessary drafting in proportion.In addition, following detailed description is not limited the present invention.On the contrary, scope of the present invention is limited by appended claims.
In whole description process, mentioned " embodiment " or " some embodiment " mean that the described special characteristic relevant with embodiment, structure or characteristic are comprised at least one embodiment of described destination object.Therefore, the difference of description local use phrase " in one embodiment " or " some embodiment " or similarly explain or there is the meaning of being equal to might not relate to identical embodiment or a plurality of identical embodiment.In addition, specific feature, structure or characteristic can combine in any suitable manner in one or different embodiment.
In Fig. 1, shown the longitudinal sectional view of Yankee formula cylinder 2 rotation A-A on the whole, that comprise cylinder self.In the figure, Yankee formula cylinder does not have insulation system.Yankee formula cylinder 2 comprises main body 1 and support and rotational structure 3, and cylinder 2 is supported by the structure (not shown) of fixing by means of spring bearing support member 5 and 7 by described support and rotational structure 3.By supporting and rotational structure 3, heat-exchange fluid (being generally steam) is recycled the inner chamber of filling Yankee formula cylinder.Described inner chamber is inner formation of main body 1 of Yankee formula cylinder.The main body 1 of Yankee formula cylinder 2 can comprise columniform housing 11, and described housing forms by calendering plate, and its edge is along the tilting screw line on the cylindrical surface of identical Yankee formula cylinder or weld along bus.
Cylindrical housings also can be by forming the cylinder associating of two or more reduced sizes, and the cylinder of described two or more reduced sizes is by obtaining rolling welded plate.In this case, the associating between two cylindrical housings of adjoining can realize by means of circumferential weld part (if contact occurs in the plane with housing axis quadrature) or realize (if contact in the plane occurring in respect to the inclination of housing axis) by means of oval weld part.Lid 11, at its end Colaesce to two end head 13 and 15, supports with rotational structure 3 and is also fixed to this end head, as described below.
In a preferred embodiment, each supports with rotational structure 3 has flange 3A, and this flange is for example by means of the bolt 16 extremely corresponding end of associating heads 13 and 15.Bolt 16 is arranged in the mode of annular array round hole 13A and the 15A in end head 13 and 15.Corresponding pin 18 at spring bearing 5 and 7 internal rotatings axially outwards extends in the mode with end head 13,15 quadratures from flange 3A.Pin 18 can be bored a hole current for heat-exchange fluid (being generally steam) vertically.
In certain embodiments, the inner surface that forms the calendering plate of cylindrical housings 11 is provided with a plurality of annular groove 11A, and the steam that this groove is used for collecting due to the chamber in the main body 1 from injection Yankee formula cylinder 2 carries out to external environment condition the condensate that thermal energy exchange produces.Fig. 1 has only shown near part groove 11A end head 13,15, but should be appreciated that groove is evenly distributed in the extending longitudinally portion of whole Yankee formula cylinder 2 conventionally.With a kind of itself known and not have demonstration mode, condensate is absorbed and circulates from the bottom of annular groove 11A.According to other embodiment, the inner surface of cylindrical housings is not offered groove.
According to advantageous embodiment, the weld part Colaesce that cylindrical housings 11 is manufactured by annular bead 20 is to end head 13 and 15.
In certain embodiments, as illustrated, in the inside of Yankee formula cylinder 2, placed pull bar 21, the end head of this pull bar from end head 13,15 extends to another end head.In certain embodiments, pull bar 21 has the cylindrical structural 21A of strap end portion annular flange flange 21B, and the end of pull bar 31 is anchored to end head 13 and 15 by this annular flange flange.In illustrated embodiment, pull bar 21 is fixed to end head 13 and 15 by two groups of bolts for each end head, and these two groups of bolts are arranged in the mode of two annular array of the axis A-A round Yankee formula cylinder 2.23 and 25 indications for bolt, bolt 23 is along the circumferential arrangement of small diameter, and bolt 25 is along larger-diameter circumferential arrangement.
As shown in Figure 1, the Yankee formula cylinder of showing does not in the drawings have insulation system, and the surface of each end head 13,15 is not all for the anchoring section of insulation system, except each supports with the flange 3A of rotational structure 3 and except bolt 23,25.In addition, all these elements are all positioned at the annular region of radius R 1, and radius R 1 is much smaller than total radius R 2 of Yankee formula cylinder.At width, equal in the outside garlands of R2-R1, end head 13 and 15 is not for the element of fastening insulation system, therefore be necessary to be provided for the fastening system of fastening insulation system, this fastening system can be applied on Yankee formula cylinder 2, even if Yankee formula cylinder 2 has been mounted and has been inserted in the fixed structure that has been installed in bearing 5 and 7.
Below with reference to Fig. 2 to Figure 18 explanation according to the embodiment of the insulation system of of the present invention, Yankee formula cylinder 2 that can be applied to describe type above.
The first component of insulation system is comprised of heat insulating panel 51.The complete insulation system of each independent end head 13,15 comprise a plurality of such, partly overlap and heat insulating panel connected to one another.As seen especially in Figure 12, be provided with in the embodiment shown ten heat insulating panels 51, nine heat insulating panels are wherein identical each other, but one of them heat insulating panel has opening to lead to the manhole 52 (Fig. 1) that may have in Yankee formula cylinder 2.
In other embodiments, the quantity of heat insulating panel can be different from illustrated quantity.In addition, in certain embodiments, all heat insulating panels may be mutually the same, not for leading to the opening of manhole.In some cases, only on an end head, be provided with manhole, now only in a side of cylinder, apply the heat insulating panel with corresponding opening.
As shown in Figures 2 to 5, each heat insulating panel 51 has the shape that is roughly annular ring section, and it is limited by two radial edges and two circular outer edge.
Heat insulating panel 51 can comprise the plate 53 of the main body that is used to form panel 51, on it, can be applied with heat-barrier material, and for example it can be formed by one deck or more multi-layered heat-barrier material (as asbestos or glass wool).In Figure 13, only schematically, partly show heat-barrier material, in figure, by reference symbol " I ", carried out mark.In all the other figure, omit for clarity heat-barrier material.
In illustrated embodiment, plate 53 has radially outermost edge 53B of a radially inward flange 53A and.Article two, edge 53A, 53B have the circular shape of circumference, and they concentrically with respect to one another and concentric with respect to the axis A-A of Yankee formula cylinder 2 that is applied with heat insulating panel 51.In addition, plate 53 has roughly directly the first radial edges 53C of shape and roughly the second radial edges 53D of straight shape.
Along the first radial edges 53C of straight shape roughly, be applied with the first shaped element 55.In illustrated embodiment, shaped element 55 has L shaped cross section, and has the first alar part 55A and the second alar part 55B.The first alar part 55A extends to be approximately perpendicular to the mode of plate 53 planes, and the second alar part 55B extends to be roughly parallel to the mode of plate 53 planes.The first shaped element 55 is fixed to plate 53 by means of a plurality of bolts 57 and nut and lock nut 59, as in Fig. 5 in detail explicitly.The alar part 55B of shaped element 55 can be bonded between plate 53 and flat shaped element 61, and this flat shaped element is clamped against L shaped element 55, thereby alar part 55B is remained locked between plate 53 and flat shaped element 61.On the alar part 55B of each shaped element 55, have the screwed hole 63 the first linear edge 53C, that open with suitable intervals that is parallel to plate 53, this screwed hole also extends (referring again to Fig. 5) in flat shaped element 61.Screwed hole 63 be formed at shaped element 55 alar part 55B with respect in the outstanding part of edge 53C.
The relative roughly edge 53D of straight shape along plate 53 is fixed with the second shaped element 69 by means of bolt 65 and nut 67, this second shaped element is L-shaped shape for example, comprises the first alar part 69A that is roughly orthogonal to plate 53 and the second alar part 69B that is parallel to substantially plate 53.Shaped element 69 is arranged on the 53D rear, edge of plate 53, makes plate 53 give prominence to a certain amount of with respect to L shaped shaped element 69.In illustrated embodiment, along plate 53, stretch out the part over shaped element 69, between the edge of shaped element 69 and plate 53D, be useful on the through hole 71 of bolt, to allow mutually locking between adjacent and partly overlapping heat insulating panel 51, this arrangement is further described in more detail with reference to Figure 18.
In illustrated embodiment, plate 53 has a plurality of through holes so that heat insulating panel 51 is locked on the holding ring being described below along the radially inward flange 53A of circle.
On the inner surface of plate 53, along outermost edge 53B radially, in the mode after leaning on a little with this edge 53B rough alignment or with respect to this edge 53B, be applied with another shaped element 75, this shaped element is preferably L shaped shaped element, there is the first alar part 75A that is roughly orthogonal to plate 53 place planes and the second alar part 75B that is roughly parallel to plate 53, the inner surface of this shaped element and plate self contacts, that is the surface of facing the corresponding end head 13,15 of Yankee formula cylinder 2 during, with installation insulation system contacts.The profile elements 75 showing in example is fixed to plate 53 by means of bolt 77 and nut 79.
In other embodiments, shaped element 55,69,75 can have the cross section different from shaped element shown in this article.For example, they can have each other different L shaped cross section of alar part, or at least some of these shaped element can be I shape shape or H shape shape.In addition, in illustrated embodiment, shaped element has identical cross section.The benefit economically that this can provide supply, produce and store, but the possibility of using difform shaped element do not got rid of.
In illustrated embodiment, shaped element 55,69 and 75 is bolted on plate 53.(not shown), can be used other fastening system in other embodiments.For example, shaped element 55,69 and 75 can be fixed on the plate 53 of heat insulating panel 51 by welding, riveted joint or other suitable system.Can also in the different shaped element of identical heat insulating panel or to the shaped element of different heat insulating panels, use different fixed modes.
In illustrated embodiment, for will be by each end head 13,15 of heat insulation Yankee formula cylinder 2, except a plurality of heat insulating panels 51 of describing and setting forth especially in Fig. 2 to 5, according to insulation system of the present invention, also comprise common with Reference numeral 81 dead ring that indicate, special demonstration in Fig. 6 to 9 in the above.Dead ring 81 is designed to be clamped on the corresponding end size portion 13 of Yankee formula cylinder 2 or the flange 3A of 15 support and rotational structure 3.
Preferably, when Yankee formula cylinder 2 has been installed on production line, for allowing that dead ring 81 is arranged on Yankee formula cylinder, part or parts that dead ring each other can be fastened by two or more form.In illustrated embodiment, especially referring to Fig. 6, dead ring 81 is divided into two part 81A that are substantially equal to each other.Two part 81A are by means of bolt Colaesce relative to one another each other, and described bolt arrangement is in the region relative along diameter, and in this region, the end of two of dead ring 81 part 81A toward each other.Particularly, with 83 represent two inner side bolt and represent two outermost bolts with 85, these bolts in the position relative along diameter tangentially the mode with two the surperficial quadratures facing mutually each other of two part 81A with dead ring 81 install.
In certain embodiments, the circumferential surface along dead ring 81 is useful on the fixedly hole of heat insulating panel 51.In some preferred embodiments, hole 87 is screwed hole.Screwed hole 87 can be tapped through hole, that is: screwed hole penetrates the whole thickness of outermost radial outside annular region of the part 81A of dead ring 81, as shown in drawings.Screwed hole 87 can be screwed in (especially referring to Figure 12 and Figure 15) by bolt 88, heat insulating panel is fixed on the planar side 81B of dead ring 81.
As in Figure 12 and Figure 13 especially explicitly, dead ring 81 is retained to corresponding support and the rotational structure 3 of end head 13 or 15 round flange 3A.Like this, as become in the back clearly, heat insulating panel 51 can utilize their radially inner circumferential edge 53A to be fixed along dead ring 81, and dead ring 81 is held round the flange 3A supporting with rotational structure 3 again.
In illustrated embodiment, for each heat insulating panel 51, insulation system further comprises at least one middle tightening member, and one of them is presented at separately in Figure 10 and Figure 11, and with 91, carries out mark substantially.In the example of setting forth, middle tightening member 91 comprises handle or bar 93, from this shank or bar portion 93, stretches out two with respect to central plane symmetrical associate member 95 and 97 substantially, and the trace of described central plane represents (Figure 10) with P-P.Therefore, in this embodiment, it is the shape of fork-shaped haply that middle tightening member has.Other embodiment is also possible, as become clearly in the back, although the shape of setting forth is now effective especially.
In illustrated embodiment, bar 93 limits the first housing 99 and the second housing 101, and for middle tightening member 91 being combined in respectively to the head of bolt 25 and 23, pull bar 21 is fixed on end head 13 and 15 by bolt 25 and 23.In illustrated embodiment, the first housing 99 and the second housing 101 have round-shaped, and partly form by the elastically deformable of shank 93.
Particularly, housing 99 is partly limited by the associate member 99A of elastically deformable, so that housing 99 is fastening around the head of corresponding bolt 25.For this object, handle 93 has a recess 99B.Similarly, housing 101 limits by two part 101A, 101B that separated by recess 101C, with the head rugged housing 101 around corresponding bolt 23.Can be by means of corresponding bolt element 103 and 105 by two housings 99 and 101 fastening around the head of bolt 25 and 23, as shown in Figure 16 is special.
Like this, tightening member 91 can be fixed on the corresponding end head 13 or 15 position of Yankee formula cylinder 2 in the middle of each, associate member 95 and 97 axis A-A from Yankee formula cylinder 2 are extended towards the circumferential edge of corresponding end head, to limit the anchor point for insulation system, this insulation system is arranged in the axis A-A place separated by a distance with Yankee formula cylinder 2, and this distance is greater than the radial distance for the bolt 23,25 of the draw-in bar of fixing described Yankee formula cylinder 2.
Each associate member 95,97 has corresponding screwed hole 107,109 near its distal end 95A, 97A (that is: the end relative with handle 93).Screwed hole 107,109 allows to use assembling bolt 111 by each heat insulating panel 51 tightening member 91 in the middle of place, centre position is fixed to, and is fixed to corresponding end head 13 or 15 by this tightening member 91.
In the configuration assembling (Figure 12 and Figure 16), middle tightening member 91 is positioned such that screwed hole 107,109 aims at the hole 73 of heat insulating panel 51.More particularly, tightening member 91 is positioned such that screwed hole 107,109 aims at the hole 73 of corresponding heat insulating panel 51 in the middle of each, so that middle tightening member 91 numbers that equate with heat insulating panel 51 numbers for each end head use.In other embodiments, do not get rid of the possibility of each heat insulating panel being used to the middle tightening member of different numbers, for example, be respectively used to two middle tightening members in each hole 73, can be anchored to different right bolts 23,25.In certain embodiments, for each heat insulating panel 51, can have two or more middle tightening members, it is fixed to different bolt 23,25, and for example a middle tightening member is fixed to bolt 23, and in the middle of another, tightening member is fixed to bolt 25.In a further embodiment, also can predict and only have a middle tightening member only combine to corresponding bolt 25 or only combine to bolt 23 or combine to two bolts 23 but do not combine to bolt 25, or just in time combine on the contrary to bolt 25 and do not combine to bolt 23.
Even in the situation that adopting in the middle of fork-shaped tightening member 91 (as shown), also can be only on bolt 25,23 one of them rather than the two, fastening operation (as the embodiment being described in the drawings) be set in Figure 10.
In certain embodiments, for each heat insulating panel 51 being fixed to the bolt 111 of corresponding middle tightening member 91, there is the given shape showing in detail at Figure 14.These bolts have the large-sized head 111A (preferably hexagonal) with respect to shank 111B, and shank 111B extends thread handle 111C.The length of thread handle 111C can not make it outstanding from screwed hole 107 or 109, but remains on the inside in hole.Like this, in the situation that bolt is completely fastening, the outer surface of centre tightening member 91 was touched in the upper blocking part that the larger diameter by bar 111B partly forms before thread handle 111C contacts with the surface of end head.If like this, bolt will not pushed middle tightening member 91 open as withdrawing from bolt.The diameter D of bar 111E is advantageously less than the diameter D0 of the through hole 73 of heat insulating panel 51.Like this, by the partial sectional view of observing in Figure 14, be appreciated that heat insulating panel 51 (especially supporting the plate 53 of heat-barrier material) can have the thermal expansion that is different from middle tightening member 91.This different thermal expansion is not only by being determined for the different materials of these two parts, also can and especially because these two residing temperature of parts are significantly different: the residing temperature of middle tightening member 91 contacting with corresponding end head 13 or 15 will be higher than the plate 53 of formation heat insulating panel 51 outer parts.Heat insulation better, the temperature difference between middle tightening member 91 and the plate 53 of heat insulating panel 51 is larger.In the middle of difference between diameter D and D0 allows, tightening member 91 expands, and after the radially outwards stretching, extension of amount of expanding to be greater than plate 53.
In certain embodiments, as being explicitly also provided with especially loosening with the bolt 111 that stops the dynamic stress that for example stood due to Yankee formula cylinder 2 and cause of special loosing prevention system in Figure 14.Figure 14 A (along the view of the line A-A in Figure 14) has schematically shown the embodiment of loosing prevention system.In this case, two bolts 111 in the adjacent holes 73 of two heat insulating panels that adjoin 51 of insertion block by a common plate 112.For example for having two holes, passes for two bolts 111 plate 112 of rectangle.Two relative corner part 112A of plate 112 against the surface laps of two hexagonal head of bolt 111 to stop any accident of two bolts loosening.
Figure 14 shown be applied in heat insulating panel 51 plate 53 facing to the stiffener 53P being fixed with on the face of end head of heat insulating panel 51.Stiffener 53P advantageously bores a hole accordingly with hole 73, to allow the shank 111B of bolt 111 to pass through.
In the configuration assembling of Figure 12 to Figure 18, shown in detail the overall insulation system being formed by the element of describing at present.Each in two end heads 13,15 is all coated with the insulation system being formed by a plurality of heat insulating panels 51 (being ten in the example of setting forth), wherein heat insulating panel 51 in radially straight shape edge upper part, divide overlapping, as detailed demonstration in Figure 18.Showing in the detailed partial cutaway view of the line XVIII-XVIII in Figure 12, lock(ing) bolt 121 is advantageously provided with loosing prevention lasso 123 and is inserted in each screwed hole 63, described screwed hole 63 is provided by shaped element 55, and shaped element 55 has formed the radially outward edge outstanding with respect to the edge 53C of sheet material 53 of heat insulating panel self.In the configuration assembling, the corresponding hole 71 that each screwed hole 63 of the L shaped shaped element 55 of heat insulating panel 51 forms with the edge 53D of the plate 53 along adjacent heat insulating panel is aimed at.Like this, every a pair of adjacent heat insulating panel 51 combines with one another, in associating region, by a series of bolts 121 are inserted to the through hole 71 of heat insulating panel and they are screwed in the corresponding screwed hole 63 on the alar part 55B of shaped element 55 and the stiffener 61 of adjacent heat insulating panel 51, the ledge of plate 53 and the shaped element of adjacent heat insulating panel 55 of heat insulating panel are overlapping.
It is upper that heat insulating panel is also fixed on the radially inward flange 53A of dead ring 81 by bolt 88, and dead ring 81 locks by means of the tangent bolt 83,85 of the flange 3A with corresponding support and rotational structure 3.
Finally, in centre position, along intermediate circumference 53M, each heat insulating panel 51 is fixed to the middle tightening member 91 of fork-shaped accordingly by means of bolt 111 and the fastening point being limited by hole 73, and middle tightening member 91 is locked in for pull bar 21 being arranged on to the bolt 25 of Yankee formula cylinder 2 inside and 23 head by means of bolt 103 and 105.
Each heat insulating panel 51 along outside the circumference 53M that extends radially outwardly out substantially until the circumferential edge of respective end head 13,15.The locking forming on the middle anchor point being limited by hole 73 by means of bolt 111 and along dead ring 81 fastening, insulation system is formed thus by means of bolt 88 to remain adhered on end head 13,15.Fastening except what realize by bolt 111 and bolt 88, the locking of the insulation system forming by partly overlapping of heat insulating panel 51 is also achieved by the support being provided by L shaped shaped element 55,61 and 75.Especially, the crooked outline part 75 of following the radially outermost circular edge 53B of each heat insulating panel 51 can advantageously be provided with the liner 127 (in detail referring to Figure 17) being positioned on alar part 75A, and liner 127 has formed support and the sealing that has end head 13 or 15 the outer surface of single heat insulating panel 51 against anchoring.
Should be appreciated that the content of setting forth or describing only represents possible and infinite embodiment of the present invention, these embodiment can be set up and change not departing from the scope immanent structure of concept of the present invention and cloth.Any Reference numeral in appended claims is just for the aforementioned description of easy-to-read and accompanying drawing, and the scope that restriction is protected never in any form.
Claims (26)
1. for an insulation system for the end head of Yankee formula cylinder, comprising:
-a plurality of heat insulating panels;
-dead ring, this dead ring is divided at least two parts can engaging with rotational structure with the support of Yankee formula cylinder, and described dead ring has clamp structure will retrain heat insulating panel described in each in the first inside position, footpath;
-for tightening member in the middle of at least one of heat insulating panel described in each, in the middle of this at least one, tightening member is configured to be constrained to be located at least head of the bolt on the described end head of Yankee formula cylinder with the be separated by mode of certain radial distance of described support and rotational structure, and described centre tightening member limits at least one fastening point for corresponding described heat insulating panel.
2. insulation system according to claim 1, wherein, is bolt component for the described clamp structure that heat insulating panel described in each is constrained to described dead ring in the first inside position, footpath.
3. insulation system according to claim 1 and 2, wherein, described in each, heat insulating panel radially extends beyond described at least one fastening point, and described in each, heat insulating panel has end hold item with the described end head rest against being equipped with the Yankee formula cylinder of described insulation system.
4. according to the insulation system described in claim 1 or 2 or 3, this insulation system also comprises the mutual confining part for middle tightening member described in each, and this mutual confining part is between described middle tightening member and corresponding described heat insulating panel and be configured to allow described heat insulating panel with respect to the differentiated thermal deformation of described end head.
5. insulation system according to claim 4, wherein, described confining part comprises for the bolt of fastening point described in each and self-locking device, should can be bonded on the screwed hole of described confining part for the bolt of fastening point described in each; And each heat insulating panel fastening point place described in each has hole and uses for corresponding bolt current, the diameter dimension in described hole is greater than the diameter dimension of the grip of bolt passing through this hole, to allow there is differentiated expansion between described heat insulating panel and described middle tightening member.
6. insulation system according to claim 5, wherein, described self-locking device comprises the interactional self-locking member of head with two adjacent described bolts.
7. according to the insulation system described in one or more aforementioned claim, wherein, in the middle of described in each, tightening member comprises the first bolt clamping device with First portion, and this First portion has and can engage with the head of bolt on the described end head of Yankee formula cylinder.
8. insulation system according to claim 7, wherein, in the middle of at least some in the middle of described in tightening member, tightening members comprise the second bolt clamping device with second portion, and this second can engage with the head of bolt on the described end head of Yankee formula cylinder.
9. insulation system according to claim 8, wherein, in the middle of at least some in the middle of described in tightening member, tightening member comprises bar portion and at least one the first extension, two described bolt clamping devices of described bar portion's formation, and described at least the first extension forms at least one fastening point of corresponding described heat insulating panel.
10. insulation system according to claim 9, wherein, described in the middle of in the middle of at least some in tightening member tightening members comprise the second extension, this second extension forms another fastening point of corresponding described heat insulating panel.
11. insulation systems according to claim 10, wherein, described the first extension and described the second extension with the symmetrical plane with respect to described bar portion roughly symmetrical mode extend.
12. according to the insulation system described in claim 10 or 11, wherein, described heat insulating panel respectively has two radial edges, and wherein, two described fastening point that are fastened to described middle tightening member of described heat insulating panel are oriented to adjacent with the radial edges of described heat insulating panel.
13. according to the insulation system described in one or more aforementioned claim, and wherein, described in each, heat insulating panel comprises: radially inward edge, and this radially inward edge has circular arc extension and is provided with for passing through to the hole of described dead ring for set bolt; Radially outward edge, this radially outward edge has circular extension; Article two, the radial edges of basic straight line, this radial edges extends to described radially outward edge from described radially inward edge, described in the middle of at least one fastening point be in the centre position between described radially inward edge and described radially outward edge.
14. according to the insulation system described in one or more aforementioned claim, wherein, described heat insulating panel comprises the plate that forms annular ring section, this plate has radially outward edge with circular extension, with the radial edges of radially inward edge and two basic straight lines of circular extension, wherein, radial edges along basic straight line every described is equipped with corresponding profile elements, and this profile elements has the alar part that is roughly orthogonal to described plate, and in the face of being equipped with the described end head of described insulation system.
15. insulation systems according to claim 14, wherein, the described profile elements of assembling along the radial edges of heat insulating panel described in each is L shaped profile elements.
16. according to the insulation system described in claims 14 or 15, wherein, for heat insulating panel described in each, the first profile elements along the first radial edges assembling in described radial edges is stretched out with respect to described the first radial edges, and arranges backward with respect to described the second radial edges along the second profile elements of the second radial edges assembling in described radial edges; And wherein, between described the second radial edges and described the second profile elements, on described plate, be shaped with through hole current for the Colaesce bolt of the radial edges of mutually adjacent described heat insulating panel, be inserted in the through hole in described the first profile elements that described Colaesce bolted joints in the through hole of the first heat insulating panel is located at the second adjacent heat insulating panel.
17. according to claim 14 to the insulation system described in 16, wherein, along the described radially outward edge with circular extension, is equipped with profile elements, and the alar part of this profile elements is roughly orthogonal to described plate.
18. insulation systems according to claim 17, wherein, are provided with liner along the described profile elements of the radially outward edge assembling of heat insulating panel described in each.
19. according to claim 14 to the insulation system described in one or more in 18, wherein, is equipped with the liner of being manufactured by heat-barrier material that faces Yankee formula cylinder interior described in each on the surface of the described plate of heat insulating panel.
20. according to the insulation system described in one or more aforementioned claim, and wherein, described dead ring is formed by least two parts about equally, and described at least two parts about equally connect by tangential grip bolt each other.
21. according to the insulation system described in one or more aforementioned claim, and wherein, the structure of described heat insulating panel and size are partly overlapping each other designed to described heat insulating panel can be arranged to along radial edges.
22. 1 kinds of Yankee formula cylinders, this Yankee formula cylinder comprises cylindrical housings, two end heads and from described end head shaft to outward extending support and rotational structure, described cylinder comprises on the head of end by the insulation system described in one or more aforementioned claim described in each.
23. Yankee formula cylinders according to claim 22, wherein, described end head is by welding and there is no the situation infracommissure of connecting bolt to described housing.
24. according to the Yankee formula cylinder described in claim 22 or 23, be included in the inner shaft that extends between described two end heads to pull bar, this pull bar uses the Colaesce of Colaesce bolt to described end head, the head of described Colaesce bolt can touch on the outer surface of corresponding described end head, wherein, described middle tightening member is fixed to described end head at the head place of the described Colaesce bolt of described pull bar.
25. according to the Yankee formula cylinder described in one or more in claim 22 to 24, wherein, described in each, support with rotational structure and comprise pin and flange, and wherein, described in each, described in each of end head, the described dead ring of insulation system is clamped on corresponding described flange.
26. according to the Yankee formula cylinder described in one or more in claim 20 to 25, and wherein, described heat insulating panel radially extends almost to arrive the Colaesce region between corresponding described end head and the housing of described cylinder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITFI2012A000018 | 2012-02-09 | ||
| IT000018A ITFI20120018A1 (en) | 2012-02-09 | 2012-02-09 | "INSULATION SYSTEM FOR A MONOLUCID CYLINDER" |
| PCT/IB2013/000145 WO2013117975A1 (en) | 2012-02-09 | 2013-02-05 | Insulation system for a yankee cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104105828A true CN104105828A (en) | 2014-10-15 |
| CN104105828B CN104105828B (en) | 2017-02-15 |
Family
ID=45992763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380008554.XA Active CN104105828B (en) | 2012-02-09 | 2013-02-05 | Insulation system for a Yankee cylinder |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2812486B1 (en) |
| CN (1) | CN104105828B (en) |
| ES (1) | ES2564492T3 (en) |
| HU (1) | HUE027701T2 (en) |
| IT (1) | ITFI20120018A1 (en) |
| PL (1) | PL2812486T3 (en) |
| WO (1) | WO2013117975A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603799A (en) * | 2014-11-17 | 2016-05-25 | 维美德瑞典公司 | A yankee drying cylinder for drying webs of cellulose material |
| CN107700272A (en) * | 2017-10-17 | 2018-02-16 | 溧阳市江南烘缸制造有限公司 | A kind of insulation end cover of drying cylinder |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITFI20130241A1 (en) * | 2013-10-15 | 2015-04-16 | Celli Paper S P A A | "PLANT COMPONENTS FOR THE PRODUCTION OF DAMP PAPER" |
| SE538066C2 (en) * | 2013-11-19 | 2016-02-23 | Valmet Aktiebolag | A method of manufacturing a steel yankee cylinder |
| SE541606C2 (en) | 2017-06-21 | 2019-11-12 | Valmet Oy | A paper making machine and a method of cutting a fibrous web in a paper making machine |
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| US4313267A (en) * | 1979-10-02 | 1982-02-02 | Amg Industries, Inc. | Thermal insulation end panel assembly for a paper machine dryer cylinder and stud clamp therefor |
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- 2013-02-05 CN CN201380008554.XA patent/CN104105828B/en active Active
- 2013-02-05 HU HUE13710005A patent/HUE027701T2/en unknown
- 2013-02-05 PL PL13710005T patent/PL2812486T3/en unknown
- 2013-02-05 WO PCT/IB2013/000145 patent/WO2013117975A1/en active Application Filing
- 2013-02-05 ES ES13710005.3T patent/ES2564492T3/en active Active
- 2013-02-05 EP EP13710005.3A patent/EP2812486B1/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105603799A (en) * | 2014-11-17 | 2016-05-25 | 维美德瑞典公司 | A yankee drying cylinder for drying webs of cellulose material |
| CN107700272A (en) * | 2017-10-17 | 2018-02-16 | 溧阳市江南烘缸制造有限公司 | A kind of insulation end cover of drying cylinder |
| CN107700272B (en) * | 2017-10-17 | 2023-12-12 | 溧阳市江南烘缸制造有限公司 | Dryer heat preservation end cover |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013117975A1 (en) | 2013-08-15 |
| ITFI20120018A1 (en) | 2013-08-10 |
| EP2812486B1 (en) | 2016-02-03 |
| HUE027701T2 (en) | 2016-11-28 |
| PL2812486T3 (en) | 2016-07-29 |
| EP2812486A1 (en) | 2014-12-17 |
| ES2564492T3 (en) | 2016-03-23 |
| CN104105828B (en) | 2017-02-15 |
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