CN102808952B - There is the dancer of seal arrangement and the method for sealing dancer - Google Patents
There is the dancer of seal arrangement and the method for sealing dancer Download PDFInfo
- Publication number
- CN102808952B CN102808952B CN201210180214.2A CN201210180214A CN102808952B CN 102808952 B CN102808952 B CN 102808952B CN 201210180214 A CN201210180214 A CN 201210180214A CN 102808952 B CN102808952 B CN 102808952B
- Authority
- CN
- China
- Prior art keywords
- sealing
- dancer
- oiling agent
- pressure
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0206—Controlled deflection rolls
- D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
- D21G1/022—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/02—Bearings
- F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sealing Devices (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The present invention relates to a kind of dancer being equipped with seal arrangement, the sheath (11) that this dancer comprises fixing axle (10) and is rotatably supported on this axle (10).Pressure chamber (12) is separated out by seal arrangement between axle (10) and sheath (11).Sealing device have sealing configuration (13) and, oiling agent stream is directed between the internal surface (15) of sealing configuration (13) and sheath (11) in sealing gap.Use gas or mixed gas as oiling agent.The invention still further relates to a kind of method sealing dancer.
Description
Technical field
The present invention relates to a kind of dancer (S roller) being equipped with seal arrangement, it has stationary axle, i.e. crosshead, with the sheath be rotatably supported on this axle, and between axle and sheath, be separated out pressure chamber by seal arrangement, wherein, sealing device has sealing configuration and seal clearance, and lubricant oil stream is directed between sealing configuration and jacket inner surface.In addition, the invention still further relates to a kind of method sealing dancer.
Background technique
In calender and extrusion press, the roller that nip extrudes toward each other by two is usually formed, and fiber web runs between these two rollers.In order to produce uniform nip pressure, usually one of them roller is designed to amount of deflection compensation roll.When carrying out active deflection compensation, bend and/or make this bending to have required shape by means of internal jacket loading prevention is this, wherein, between axle and sheath, apply the power of this effect of generation, the size of this power is adjustable.In the amount of deflection compensation roll floated, the space between axle and sheath is separated into two rooms due to longitudinal direction and end face seal.The room being positioned at nip side is pressure chamber, is also referred to as wife (Pluskammer), and the room of side is called negative room (Minuskammer) relatively, and the pressure in negative room is lower than the pressure in pressure chamber.The pressurization of pressure chamber can produce the power making sheath bend.The projection plane of pressure chamber is relatively large, and therefore required pressure is also relatively gentle, generally remains on below 10bar.And must there be sufficient sealing pressure chamber in whole compressing length on end face.Longitudinal sealing is also referred to as side seal according to its position.
In deflection compensation dancer, for fixing axle configures the sheath that can rotate about it.Use pressure oil to load sheath, pressure oil is transported in the pressure chamber between axle and sheath.By the amount of deflection of this loading by compensation roll sheath, thus obtain uniform pressure distribution in the nip.Amount of deflection compensation roll is arranged in extrusion press or calender usually, as a roller of the roller centering of generation nip contact.Roller inside, increase along with increasing progressively of rotating speed primarily of the friction caused by oil viscosity, therefore such roller will need higher driving power.In addition, this friction also will cause the heating of oil, but oil must be cooled.
The deflection compensation dancer that a kind of air loads is described in patent documentation US 5725465.In this roller, use pressurized air to carry out alternative pressure oil, thus reduce the total energy consumption of roller.Transverse seals is made up of the diaphragm seal that two are intervally installed, and these two diaphragm seals contact with jacket inner surface.Between diaphragm seal, import oil as oiling agent, it makes diaphragm seal lubricate and implements sealing to the gap between diaphragm seal and jacket inner surface simultaneously.But oil also can enter in pressure chamber, therefore must constantly by oil carrying-off therefrom.The shortcoming of this structure is also to be formed a lot of holes and has problems due to oil and mixing of air.
Summary of the invention
Substantially identical with the working principle of the dancer utilizing oil to load at present according to the working principle of the dancer utilizing pressurized air to load of the present invention.By static, i.e. irrotational axle and to be arranged on the dancer of mechanical structure also with currently used that the sheath on this axle forms suitable.In the pressure chamber of the roller of air loading, air is also used to replace oil to be used as pressure medium.Required air quantity and supply pressure are determined according to onsite application.Known by calculating: supply pressure is linear rising as external load function.Be used for the linear load of the 250kN/m of example roller in order to compensation making, need the supply pressure being about 5bar.This stress level depends on process, therefore in order to reduce the power consumpiton of the roller utilizing air to load, by means of sealing, the effusion from pressure chamber must be reduced to enough low level.Because the viscosity pole of air is low, the frictional loss therefore produced in pressure chamber is inappreciable.Therefore the requirement of the driving power required for the roller loaded making air rotates also is quite little.
Utilize the present invention can provide a kind of novel float roller being equipped with seal arrangement, wherein will pressure chamber be made to obtain good sealing, and there will not be these to be present in the problems of the prior art.Another object of the present invention is to propose a kind of new method sealing dancer, utilizes the method can solve the problem of seal arrangement.Characteristic feature according to seal arrangement of the present invention is: using gas or mixed gas as oiling agent.Correspondingly, be according to the characteristic feature of method of the present invention: adopt gas or mixed gas as oiling agent.
Accompanying drawing explanation
According to the accompanying drawing showing several mode of execution of the present invention, the present invention is described in detail below.Wherein:
Fig. 1 a show from end view to the right schematic diagram of roller;
Fig. 1 b shows the roller pair as shown in Figure 1 observed along machine-direction;
Fig. 1 c shows the First Principle figure according to seal arrangement of the present invention;
Fig. 1 d shows the second schematic diagram according to seal arrangement of the present invention;
Fig. 2 a shows the structure principle chart of seal arrangement;
Fig. 2 b shows the 3rd schematic diagram according to seal arrangement of the present invention;
Fig. 2 c shows the 4th schematic diagram according to seal arrangement of the present invention;
Fig. 3 a shows the 5th schematic diagram according to seal arrangement of the present invention;
Fig. 3 b shows the structure corresponding to schematic diagram shown in Fig. 3 a with cross section;
Fig. 3 c shows sealing configuration as shown in Figure 3 b with isometric view.
Embodiment
Fig. 1 a shows roller pair, and its lower roll is deflection compensation dancer.The sheath 11 that this deflection compensation dancer comprises fixing axle 10 and is rotatably supported on this axle.By pressure chamber 12 that seal arrangement is separated between axle 10 and sheath 11.In addition, sealing device also comprises sealing configuration 13 and seal clearance 14, wherein oiling agent stream be directed to sealing configuration 13 and sheath 11 internal surface 15 between (Fig. 1 c).Also show negative room 20 in fig 1 a.According to the present invention, oiling agent is made up of gas or mixed gas.Fig. 1 b shows the roller pair observed along machine-direction.
Fig. 2 a shows the Sealing 13 of pressure chamber 12 in simplified form, its object is to limit from the air-flow in pressure chamber.Adopt gas or mixed gas as oiling agent, it is also sealed simultaneously, its from Sealing 13 side through the region that feed pressure is lower.Allow the leakage from pressure chamber, but prerequisite be reveal cause to air load compressor horsepower require it is not too large.
Generally speaking, the seal 13 comprises sealing configuration and seal clearance.Sealing gap is formed between sealing configuration and jacket inner surface.The oiling agent being transported to seal clearance also one reacts in the seal 13, and forms lubricant film.Sealing configuration such as can be made up of diaphragm seal, film, air cushion, paper tinsel or other corresponding elements.This lubrication can be pneumatic type, or aerostatic force formula, and adopt gas or mixed gas (such as air) as oiling agent.Show the sealing configuration be made up of air cushion 16 in figure 1 c, the sealing configuration be made up of paper tinsel 21 has been shown in Fig. 1 d.
Although be mainly illustrated in conjunction with longitudinal sealing in describing the invention, but it is to be noted, the end face that also can be sealed in pressure chamber 12 by side seals it, and side sealing and longitudinal sealing can form the structure of an one jointly.
In order to form pressure chamber 12, to the roller supply air being loaded air.According to the present invention, adopt gas or mixed gas as the oiling agent of sealing configuration, avoid the problem relevant to prior art at this.This lubrication can be pneumatic type or aerostatic force formula.In pneumatic type lubrication, when there is relative movement on relative surface, form lubricant film.Due to this lubrication, in seal clearance, also produce pressure distribution, this pressure distribution makes Sealing from apparent surface
(in this case jacket inner surface) rises.
The operation of aerostatic force formula sealing such as, based on the pressurized gas imported in seal clearance or mixing pressurized gas, pressurized air.Pressurized air makes the lubrication circumstances occurring aerostatic force formula in seal clearance, at this, between apparent surface, does not form contact.On-load pressure can be imported in seal clearance as oiling agent through Sealing.This sealing also can be applicable to high running temperature well.
Utilize aerostatic force formula Sealing can realize the stable operation of Sealing and lower air consumption.Required bearing capacity is very little, makes it possible to thus adopt gas as oiling agent.Gas is chemically stable in very wide temperature range, and has lower friction due to its low viscosity.In addition, when using air, oiling agent is for having problem, and does not usually also need external refrigeration.
Fig. 2 b shows the structure of membrane seal.The working method of membrane seal is based on elastic membrane 17, and it is subjected to on-load pressure from below, preferably adopts air or gas as loaded medium at this.This film can be fixed on the groove that is arranged in axle 10, and when film 17 swells, seal clearance diminishes.This film such as can be made up of metal or polymeric material.This film can be gas permeability or non-breathable.Preferably gas or mixed gas are imported to below film as oiling agent simultaneously.If pass one or more permeable film for the medium loaded, then Sealing will work according to aerostatics principle.
Structure is as shown in Figure 3 aerostatic force formula structure, and at this, pressurized air is with pressure p
sbe placed in seal clearance through closure (Drossel), then, air is arrived in surrounding environment by seal clearance again, and pressure is herein p
y, between Sealing 13 and sheath, form air lubricating film simultaneously.At this, apply independent on-load pressure to the space be arranged in below Sealing 13, but also can using the part of supply pressure as shown in Figure 2 as on-load pressure.
Preferably can reduce the air-flow that will import in seal clearance, thus avoid excessive clearance height.Large clearance height will cause gas consumption increase and reduce rigidity.Nozzle such as can be utilized to reduce air-flow, and after this seal clearance itself can as secondary closure.Substitute nozzle or additionally, such as can also import in seal clearance by air by porous material, wherein, throttling realizes based on the numerous small holes of material.
Show a kind of cross section of exemplary sealing configuration in fig 3b.Shown is test seal 13, and its length is a part for the length of effective longitudinal sealing.Sealing 1. floating ground is bonded on body part and 2. goes up.3. the air passing hole be transported in seal clearance is imported in seal clearance, forms air lubricating film thus.In Sealing formation space, below 1. 4., on-load pressure is produced by loading pressurized air wherein.According to equilibrium equation, when forming air lubricating film in seal clearance, the size of on-load pressure determines the size of the pressure produced in seal clearance.
Fig. 3 c shows a kind of figure such as axle such as grade of exemplary sealing configuration.1. pressurized air carried by the link be screwed on end face, and 2. air is flowed in seal clearance by 5 holes.3. nozzle is connected to each other by groove, and groove 3. in order to balance pressure distribution, and prevents the inclination of Sealing under higher Sliding velocity.The surfacing of Sealing such as can be made up of engineering plastics.The surfacing of Sealing and seal body material can be identical or different.Be preferably to make slidingsurface contact with each other in short time by these Material selec-tion.Sealing can be fixed on axle 10 by floating ground, and like this, the phase mutual edge distance when bending shaft between jacket inner surface and axle central point changes, and can realize uniform clearance height.
Seal arrangement according to the present invention has the device 18 for generation of oiling agent stream.This device 18 comprises flowing supporting member 19, and as shown in Figure 2 c, this flowing supporting member 19 makes sealing configuration 13 disconnect.Flowing supporting member 19 can along the longitudinal direction of sealing configuration and/or horizontal expansion.Such as in fig 3b, in sealing configuration, arrange longitudinal bearer, lateral support member is from open towards seal clearance here.In addition, sealing configuration 13 also has on-load pressure deceleration loading device, and this device is configured to the parts of lubricant supply device in mode of execution as shown in Figure 2 c.
Consider the total-power loss of the dancer that air loads, make every effort to be made by the flowing between pressure chamber compressor horsepower require to remain on minimum degree.When forming pressure chamber, the sealability of the transverse seals of dancer is an important factor.Test according under the condition of the roller jacket inner surface of sealing configuration of the present invention in simulation professional standard.In testing, the opposing side of Sealing is made up of columniform steel pipe.As confirmed in testing, when the clearance pressure of the pressure selecting to be equal to or greater than pressure chamber's pressure as Sealing, pressure chamber can be made to be completely air impervious.Even if improve seal clearance pressure also can realize leak free pressure chamber, but this is supplied to the air-flow in Sealing correspondingly to increase by making.Determine in addition: the mean gap height of Sealing and rotating speed have nothing to do and remain unchanged, and also remain unchanged at this stream.Target is floating by seal designs and " setup error is adaptive ".At this, the flowing caused by gemoetric error is minimized.The air putting on Sealing and the air that seal clearance is lubricated is carried preferably by identical supply line.The total power consumption of the dancer loaded unlike, air with current dancer almost has nothing to do with rotating speed, because when speed rises, only has the mechanical output loss of roller increasing.Although above with reference to a kind of structure to invention has been detailed description, pressure chamber's pressure that the lubricant pressure wherein in seal clearance is more than or equal to, can use flowing occurred between the chambers when lubricating seal clearance.Pressure in this seal clearance lower than the pressure in pressure chamber, but higher than the pressure in negative room.
The application of dancer that air loads is such as the extrusion press of fiber web manufacturing machine (such as board and box lining machine and paper machine), calender and metal tape extrusion press.Also can such as arranging without driving amount of deflection compensation roll as deflector roll in metal belt calender, wherein, utilizing one (independent) to be driven roller and by band circulation, multiple deflector roll being moved in rotation.
Claims (8)
1. one kind is equipped with the dancer of seal arrangement, it sheath (11) comprising fixing axle (10) and be rotatably supported on described axle (10), by pressure chamber (12) that sealing device is separated out between described axle (10) and sheath (11), sealing device has sealing configuration (13) and seal clearance (14), in sealing gap (14), oiling agent stream is imported between the internal surface (15) of described sealing configuration (13) and described sheath (11), it is characterized in that, use gas as oiling agent, described seal arrangement comprises the device (18) for the formation of oiling agent stream, flowing supporting member (19) should be had for the formation of the device (18) of oiling agent stream, it is guided through described sealing configuration (13).
2. dancer as claimed in claim 1, it is characterized in that, described oiling agent is made up of the pressurized gas flowed.
3. dancer as claimed in claim 1, it is characterized in that, the pressure of described oiling agent stream is equal to or greater than the pressure in described pressure chamber (12).
4. dancer as claimed in claim 1, it is characterized in that, the pressure of described oiling agent stream is less than the pressure in described pressure chamber (12).
5. dancer as claimed in claim 1, is characterized in that, described flowing supporting member (19) is along the longitudinal direction of described sealing configuration (13) and/or horizontal expansion.
6. dancer as claimed in claim 1, it is characterized in that, described sealing configuration (13) comprises on-load pressure deceleration loading device, and this on-load pressure deceleration loading device is constructed to the parts of lubricant supply device.
7. dancer as claimed in claim 1, it is characterized in that, described oiling agent stream is set to, makes the seal clearance (14) between the internal surface (15) of described sealing configuration (13) and described sheath (11) be less than 50 μm.
8. the method for the dancer of a sealing according to any one of claim 1 to 7, wherein, between the fixing axle (10) being under the jurisdiction of described roller and the sheath (11) being rotatably supported on this axle (10), pressure chamber (12) is separated out by seal arrangement, and import oiling agent to the seal clearance (14) being under the jurisdiction of sealing device is middle, it is characterized in that, use gas as oiling agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20115539A FI123057B (en) | 2011-06-01 | 2011-06-01 | Floating roller with sealing arrangement and method for sealing floating roller |
| FI20115539 | 2011-06-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102808952A CN102808952A (en) | 2012-12-05 |
| CN102808952B true CN102808952B (en) | 2015-09-09 |
Family
ID=44206753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180214.2A Expired - Fee Related CN102808952B (en) | 2011-06-01 | 2012-06-01 | There is the dancer of seal arrangement and the method for sealing dancer |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102808952B (en) |
| AT (1) | AT511527B1 (en) |
| DE (1) | DE102012208577A1 (en) |
| FI (1) | FI123057B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625216A (en) * | 2018-05-31 | 2018-10-09 | 河南大指造纸装备集成工程有限公司 | A kind of boots roller boots means of press seals pressure testing device |
| DE102019123658A1 (en) * | 2019-09-04 | 2021-03-04 | Andritz Küsters Gmbh | Method for monitoring sealing elements of a fluidically operated roller arrangement and roller arrangement |
| US20240150964A1 (en) | 2021-01-22 | 2024-05-09 | Aalto University Foundation Sr | Pneumatic zone-controlled deflection compensation for roll |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2744524B1 (en) * | 1977-10-04 | 1978-11-30 | Kuesters Eduard | Roller for the pressure treatment of webs |
| US4656709A (en) * | 1984-12-15 | 1987-04-14 | Eduard Kusters | Floating roll capable of acting in two opposite directions |
| CN1050750A (en) * | 1989-10-03 | 1991-04-17 | 维美德造纸机械有限公司 | Reduce method and a kind of crown controlled roll of crown controlled roll power consumption |
| DE4023235A1 (en) * | 1990-07-21 | 1992-01-23 | Andreas Dipl Ing Knorr | Compensating pressure treatment roller - circulates gas or fluid through porous elastic structure between casing and stationary core |
| US5725465A (en) * | 1993-10-08 | 1998-03-10 | Eduard Kusters Maschinenfabrik Gmbh & Co. Kg | Method for operating a roller and corresponding roller |
| EP1313958B1 (en) * | 2000-08-28 | 2005-08-10 | Pikoteknik Oy | Bearing of cylinders and rollers with the aid of gas bearings |
-
2011
- 2011-06-01 FI FI20115539A patent/FI123057B/en not_active IP Right Cessation
-
2012
- 2012-05-22 DE DE201210208577 patent/DE102012208577A1/en not_active Withdrawn
- 2012-05-25 AT ATA620/2012A patent/AT511527B1/en not_active IP Right Cessation
- 2012-06-01 CN CN201210180214.2A patent/CN102808952B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2744524B1 (en) * | 1977-10-04 | 1978-11-30 | Kuesters Eduard | Roller for the pressure treatment of webs |
| US4656709A (en) * | 1984-12-15 | 1987-04-14 | Eduard Kusters | Floating roll capable of acting in two opposite directions |
| CN1050750A (en) * | 1989-10-03 | 1991-04-17 | 维美德造纸机械有限公司 | Reduce method and a kind of crown controlled roll of crown controlled roll power consumption |
| DE4023235A1 (en) * | 1990-07-21 | 1992-01-23 | Andreas Dipl Ing Knorr | Compensating pressure treatment roller - circulates gas or fluid through porous elastic structure between casing and stationary core |
| US5725465A (en) * | 1993-10-08 | 1998-03-10 | Eduard Kusters Maschinenfabrik Gmbh & Co. Kg | Method for operating a roller and corresponding roller |
| EP1313958B1 (en) * | 2000-08-28 | 2005-08-10 | Pikoteknik Oy | Bearing of cylinders and rollers with the aid of gas bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| AT511527A3 (en) | 2015-04-15 |
| FI123057B (en) | 2012-10-15 |
| DE102012208577A1 (en) | 2012-12-06 |
| FI20115539A0 (en) | 2011-06-01 |
| AT511527A2 (en) | 2012-12-15 |
| AT511527B1 (en) | 2015-06-15 |
| CN102808952A (en) | 2012-12-05 |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Espoo, Finland Applicant after: Veimeide Technology Co., Ltd. Address before: Helsinki Applicant before: Metso Paper Inc. |
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Free format text: CORRECT: APPLICANT; FROM: METSO PAPER INC. TO: VEIMEIDE TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |