• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Sealing device (100) for an industrial furnace (1) comprising a first furnace part (2), comprising a first circular connection part (110), comprising one (3), which circular connection and a second furnace part second circular connection part (120), (110, 120) are arranged to engage and tightly connect to each other so that the oven parts (2,3) are rotatable and tightly arranged relative to each other in the engagement between the connecting parts (110, 120). The invention is characterized in that the first circular connecting part (110) comprises a circular edge (111b) which is arranged to run inside and along a one provided with a longitudinal insert (1226; 1226a), (120) along the the second circular connecting part extends, (l1l; l22), to the second furnace part (3) (lllb) (l2l; l22) so that the circular edge (l2l; l22), connected, is freely rotatable in the tube by tubes designed so that it springs back against a layer (l26; l26a) are closed and arranged to enclose the (lllb) shear circular edge (lllb) along substantially the entire length of the edge when the oven parts (2,3) are tightly connected to each other, and in that a liquid-shaped cooling medium is arranged to flow in this layer through the tube (l1l; l22) and substantially fills the entire space defined by the combination (l1l; l22) of the inner surfaces of the tube edge (lllb) and the circular outer surfaces. Application text document 2010-01-26 100009EN
    公开号:SE1050078A1
    申请号:SE1050078
    申请日:2010-01-26
    公开日:2011-07-27
    发明作者:Mats Gartz；Rolf Ljunggren
    申请人:Simonsson & Gartz Handelsbolag；
    IPC主号:
    专利说明:

    Temperatures of up to 1500 ° C and in some cases also 2000 ° C may occur.
    In addition, leaking air can in some cases oxidize the treated material and thereby cause quality losses and impaired yield. This is the case, for example, with aluminum smelting, with throttling as a result.
    A known type of rotatable seal is a so-called labyrinth seal. A disadvantage of such a seal is that it is relatively complex and thus expensive. In addition, thermal expansion is a problem. When an oven changes temperature, both its length and its width or diameter change. The body of a 50 meter long oven can, for example, vary upwards of 10 cm in length depending on temperature. It is difficult to design a seal that is adequate over this entire range of lengths and diameters of the parts to be sealed.
    For linear geometries, it has been proposed in Swedish patent application 0700628-1 to use water-filled pipes to seal a vertically displaceable door, through which pipes an edge of the door runs. Such a design solves the problem of reliable and inexpensive sealing, but not for circular geometries where one furnace part is rotatable relative to another. In addition, the problem remains of providing a cost-effective solution that can work satisfactorily even with thermal expansion.
    The present invention solves the above problems.
    Thus, the present invention relates to a sealing device for an industrial furnace comprising a first furnace part, comprising a first circular connection part, and a second application part, comprising a second circular connection part, which circular connection parts are arranged to engage and sealingly connect to each other so that the oven parts are rotatable and tightly arranged relative to each other in the engagement between the connecting parts, and are characterized in that the first circular connecting part comprises a circular edge and, along. one with a son1 is provided. to run inside longitudinal cut provided, extending along the second circular connecting part, extending to the second oven part, tube, so that the circular edge is freely rotatable in the tube, because the tube is designed so that it springs back towards a position where the insert is closed and arranged to enclose the circular edge along substantially the entire length of the edge when the oven parts are tightly connected to each other, and in that a liquid cooling medium is arranged to flow through the tube in this position and fill substantially the entire space defined by the combination of the inner surfaces of the tube and the outer surfaces of the circular edge.
    In the following, the invention will be explained in more detail, partly in connection with exemplary embodiments of the invention, and with reference to the accompanying drawings, in which: Figure 1 is a simplified perspective view of a rotary kiln with a sealing device according to the present invention; Figure 2 is a detail of a simplified cross-sectional view of a preferred sealing device according to the present invention; Figure 3A is a detail of a simplified detail view in perspective of a first preferred supply device; and Figure 3B is a detail of a simplified detail view in perspective of a second preferred supply device.
    Application text doc 2010-01 »26 100009EN 10 15 20 25 30 All figures share reference numerals for corresponding parts. The proportions almost different parts are in some cases exaggerated to improve clarity.
    Figure 1 illustrates in principle a rotary oven 1 comprising a first oven part 2, a second oven part 3 and a third oven part 4. In the exemplary oven 1 shown in figure 1, either part 2 or part 3 or both of these parts can be rotatable in relation to the third part 4, which is fixedly arranged in relation to the installation site.
    Thereby 'arises' need 'for tight rotatable connections' between the first 2 and the second part 3, partly between the second 3 and the third part 4, partly between the first part 2 and a possible rotatable feed hatch (not shown), arranged at the first part 2 away from the second part 3 facing end 2a. It will be appreciated that the exemplary furnace configuration shown in the figures has been chosen to illustrate various types of rotatable connections where the present invention is applicable, and that other types of geometric configurations may also occur where a rotatable connection in an industrial furnace is required. sealed.
    Figure 1 further shows a rotatable sealing device 100 according to the present invention, arranged to seal the first oven part 2 with the second oven part 3. The first part 2 is arranged to be telescopically inserted in the second part 3, so that heated material can travel downwards in the direction of gravity from the feed opening of the first part 2 at its end 2a, via the first part 2 and further into the second part 3, during rotation.
    Application text doc 2010-01 »26 100009EN 10 15 20 25 30 Figure 2 shows the sealing device 100 in cross section, together with the respective end parts of the first 2 and second 3 furnace parts.
    The first part 2 comprises a circular connecting part 110, suitably in the form of a flange which is L-shaped in cross section and which extends from the outer surface of the first part 2. The connecting part 110 comprises, according to the preferred embodiment shown in Figure 2, a plate 111a extending perpendicularly from the outer surface of the first part 2 and running peripherally around this surface, and a circular edge 11b extending from the plate 111a at an angle relative to the plate 111a and thus constitutes the foot on the L-shape of the flange, and which in addition in the rest position is advantageously substantially parallel to the outer surface of the first part 2. The second part 3 also comprises a circular connecting part 120, in the form of a tube 121 extending around the outer surface of the second part 3, comprising a longitudinal opening or notch 126 intended to receive and house the flange 110. The tube 121 further comprises a tight connecting part 123 to the outer surface 3 of the second part. It is preferred that the ring formed by the tube 121 around the second oven part 3 is arranged concentrically in relation to the circular cross-section of the second part 3.
    The two respective circular connection parts 110, 120 are arranged to engage and sealingly connect to each other so that the two oven parts 2, 3 are rotatably arranged in relation to each other during the engagement between the connection parts 110, 120. This is achieved by an end part 112 of the circular edge 111b is inserted through the groove 126, and is allowed to run inside and along the tube 121, in such a way that the end portion 112 is freely rotatable in the tube 121 in the angular direction of the oven parts 2, 3.
    Application text doc 2010-01 »26 100009EN 10 15 20 25 30 According to a preferred embodiment, which is not shown in figure 2, the tube 121 is designed so that it springs back towards a position where the groove 126 is closed, and is further arranged to enclose the circular edge. 111b along the entire or at least substantially the entire length of the edge 111b when the oven parts 2, 3 are tightly connected to each other. The resilient action of the tube 121 is thus achieved in this case in that the tube 121 itself is formed in a resilient material or comprises spring means which cause the tube 121 to spring back towards a position in which the groove 126 is closed.
    However, according to an alternative preferred embodiment, which is illustrated in Figure 2, the tube 121 is made of a rigid material, preferably metal, and comprises an inner tube 122 made of a flexible material. The inner tube 122, in the same way as the tube 121, comprises a longitudinal groove 126a, the end portion 112 of the edge 111b arranged to receive and accommodate the circular. Such a construction provides a robust and heat-resistant yet simple and thus cost-effective solution.
    The inner tube 122 may be made of a resilient material, it may, for example, be formed as a thick rubber tube with the notch 126a as a longitudinal and continuous section.
    According to a preferred embodiment, however, the outer diameter of the flexible tube 122, when the tube 122 is at rest, is larger than the inner diameter of the outer tube 121, the edges of the flexible tube 122 at the groove 126a being bent or folded towards the center of the outer tube 121 when mounted in the outer tube 121 and when the end portion 112 of the circular edge 111b Application text 2010-01 »26 100009EN 10 15 20 25 30 is inserted through the grooves 126, 126a. This results in a very good seal during operation as described below.
    According to a particularly simple and therefore preferred embodiment, the flexible tube 122 is designed as a mat of flexible material, advantageously wider than the inner circumference of the outer tube 122, which mat in the resting state is substantially flat but which is rolled into a tubular shape when mounted in the outer tube l2l.
    It is also possible to supplement a resilient outer tube 121 with an inner, flexible tube 122 as above.
    According to the invention, a liquid cooling medium is arranged to flow continuously through the tube 121, and to substantially fill the entire space defined by the combination of inner surfaces and the outer surfaces of the circular edge tube 121 111b. If several concentric tubes are used, for example an inner flexible tube 122 together with an outer rigid tube 121 as described above, the coolant is arranged to flow through the inner tube 122 and substantially fill the entire space defined by the combination of the inner tube 122 inner surfaces and the outer surfaces of the circular edge 11.
    The refrigerant is preferably water, but may be any suitable liquid refrigerant, such as water with a suitable conventional friction reducing and / or abrasion reducing additive or a suitable, conventional, low friction liquid refrigerant. As illustrated in Figures 1, 3A and 3B. 200, 300 arranged to continuously supply the coolant to the tube 121, 122 at a respective point 201, 301 located on the tube 121, 122 at the top in the direction of gravity. The sealing device 100 is arranged to continuously discharge the coolant from the tube 121, 122 by means of gravity, for example via leakage from the tube 121, 122 through the groove 126, 126a or through leaks or other openings. in the tube 121, 122. 121, Alternatively, the refrigerant may be removed at the bottom edge of the tube 122 by means of a device similar to that shown either in Figure 3A or in Figure 3B. According to a preferred embodiment, the refrigerant is recirculated by a circulating device (not shown), by collecting the refrigerant below and then pumping it back to 300. the sealing device 100 supplies the supply device 200. during operation, and there is therefore a life of 122 springs for achieving a satisfactory tube 121, 122. Furthermore, the action of the tube 121 ensures back to the position where the groove 126, 126a is closed that 126a closes tightly around the circular edge 111b 126a the notch 126, outer sides shall be interpreted. That the groove 126 "closes tightly" as if no gas can pass through the groove 126, 126a when the pipe 121, 122 is filled with coolant. The refrigerant, on the other hand, may leak through the insert 126, 126a to some extent, although it is preferred that the notch 126, 126a be so closed around the edge 111b that the leakage per unit time of refrigerant through the notch 126, 126a is so large in relation to the total amount of coolant that suitable circulation of coolant is achieved in the tube 121, 122.
    As described above, the tube 121, 122 is tightly attached to. the outer wall 'of the second oven part 3 via the connecting part 123. In addition, the connecting part 110 is itself sealingly attached to the outer wall of the first oven part 2. Furthermore, an overpressure occurs inside the tube 121, 122 due to the liquid column of the cooling medium inside the tube 121, 122, which means that the volume defined by the inner surfaces of the tube 121, 122 in combination with the outer surfaces of the circular edge 11lb are always completely or substantially completely filled with coolant during operation. Thus, an effective seal is achieved between the two furnace parts 2, 3, so that atmospheric air can not leak into the industrial furnace 1 and so that the gases of the furnace atmosphere can not leak out of the industrial furnace 1 via the rotatable sealing device 100.
    According to a preferred embodiment, which is illustrated in Figure 3A, the furnace part 3 on which the pipe 121, 122 is arranged is fixed. In other words, the furnace part 2 on which the circular edge 111b is arranged is rotatably connected to the furnace part 3, while the furnace part 3 is fixed relative to the installation site of the furnace 1. In this case, the pipe 121, 122 comprises a fixed arranged supply line 200 for coolant at the top of the tube 121, 122 in the direction of gravity. Such an arrangement is uncomplicated and thus reliable.
    However, in the case where the oven part 3 on which the tube 121, 122 is arranged is rotatably movable relative to the installation site, it is preferable to design a supply device 300 for coolant as illustrated in Figure 3B. The supply device 300 is slidably arranged in relation to the pipe 121, 122, and is arranged to supply cooling medium through the groove 126, 126a by means of a supply means 302. Because the supply device 300 is slidably arranged in relation to the pipe 121, 122, supply of coolant always takes place at the point 301 which at every moment during operation is at the top in the direction of gravity, which provides good flow and sufficient filling of coolant in the whole tube 121, 122.
    It is preferred that the underside of the supply member 302 be formed with a curved shape so that it can slide along the outer surface of the circular edge 11b with minimal friction and with a minimum of refrigerant leakage. In case a flexible inner tube 122 is used, it is preferred that the supply member 302 be so flat that it can be inserted through the groove 126a and further into the interior of the tube 122 to supply coolant there without affecting the shape of the groove 126a more than instead of coolant out through the groove 1226a, the supply of coolant is minimized.
    According to a particularly preferred embodiment, illustrated in Figure 3B, the supply means 302, in a cross section perpendicular to the main direction of propagation of the tube 121, 122 when the supply means 302 is mounted and coinciding with the cross section of the oven parts 2, 3, has a soft bell shape , which bell shape enables tight connection between the supply means 302 and the groove 126a when the supply means 302 is inserted into the pipe 122 and thereby presses the pipe parts into the groove 126a apart.
    According to a preferred embodiment, which is illustrated in figure 2, the connecting part 123 is formed as a radially folded net number plate. Such a connecting part 123 can accommodate temperature-induced radial material movements of the second furnace part 3. Since the pipe 112, 222 is cooled by means of the cooling medium, the temperature-induced material expansion of the pipe 121, 122 will be small in comparison with that of the second furnace part 3. even in the case where a rigid outer tube 121 of metal is used. In other words, the pipe 121, 122 will not be substantially destroyed with increasing furnace temperature. Thus, the distance between the outer wall 3 of the second part 3 and the pipe 121, 122 will vary with varying oven temperature, which distance variations can be taken up by the pleated connection part 123 without the sealing connection between the second part 3 and the tube 121, 122 is adversely affected.
    The preferred design of the connection part 110 illustrated in Figure 2, with a flange comprising the circular edge 111b connected to the first furnace part 2 by means of a peripheral, perpendicular plate 111a, further allows, with an uncomplicated structure, that temperature-induced changes in the outer diameter of the first furnace part 2 are taken up without deteriorating the properties of the sealing device 100. Since the circular edge 111b is cooled by the cooling medium in the tube 121, 122, the temperature of the end portion 112 of the circular edge 111b will not vary appreciably to the surface temperature of the first portion 2. Thus, during operation, a relatively strong temperature gradient will occur in the connecting part 110. This temperature gradient will cause the connecting part 110 to be tilted so that the respective angles between on the one hand the plate 111a and the first part 2, and on the other hand between the plate 111a and the circular edge 111b, changes. When the outer surface of the first part 2 expands due to height temperature, the end part 112 will bend down towards said outer surface. Since the temperature in the edge 11b near the end portion 112 changes only to a small extent, its position in the tube 121, 122 will not be appreciably affected, possibly except at the angle of the circular edge 111b. In other words, the sealing effect of the sealing device 100 will not be adversely affected by thermal expansion of the first furnace part 2. The fact that the circular edge 111b tilts so that the angle at which the end part 112 protrudes into the tube 121, 122 does not change poorer seal, because the tube 121, 122 is circular inside and is completely filled with coolant.
    Application text doc 2010-0146 100009EN 10 15 20 25 30 12 By suitable choices of dimensions for the plate 111a and the circular edge 111b as well as the mutual angles at temperature uniformity, a connecting device 110 can be designed which functions satisfactorily over a wide temperature range of the first part 2 outer wall.
    The sealing device 100 can also absorb temperature-induced changes in the length of the two furnace parts 2, 3, which can lead to longitudinal displacements, between the parts 2, 3.
    Since the end part 112 is inserted a piece into the tube 121, 122, it can be carried out a certain piece without completely 126a and thus losing its sealing member 122. The pull part 112 is pulled out of the groove 126. connection to the tube 121, is arranged in a position not completely inserted into the tube 121, that the end part 112 can be pushed in through the groove 126, 126a a further distance before it receives the inner wall of the tube 121, 122 on the opposite side. Thus, the connecting part 110 can be arranged so that a certain play is present between the circular edge 111b and the tube 121, 122 in the longitudinal direction of the oven parts 2, 3. This play can thus take up longitudinal displacements between the parts 2, 3 without deteriorating sealing ability of the sealing device 100.
    According to a preferred embodiment most clearly illustrated in Figure 2, the outer pipe 121 further comprises a longitudinal, first pipe part 121a which is fixedly joined to the connecting part 123, and a longitudinal second pipe part 121b adapted to the first pipe part, which pipe sections 121a, together form the rigid pipe 121. The pipe sections 121a are joined by means of a longitudinal fastening device 124.
    The fastening device 124 may be conventional in itself, for example in the form of a screw connection, and is arranged to allow detachment of the second pipe part 121b from the first pipe part Application for maintenance of the sealing device 100a. Such an arrangement allows quick and direct access to the inner, flexible tube 122 and other components of the sealing device 100.
    Above, the present invention has been explained with reference to exemplary embodiments. However, the invention is not limited to these embodiments.
    It will be appreciated, for example, that similar sealing devices 10 to that described between the first 2 and the second 3 oven parts may also be arranged between an optional rotatable oven door (not shown) for charging material into the first oven part 2 and / or between the second the oven part 3, which in this case is rotatably arranged, and the third oven part 4.
    Thus, the invention may be varied within the scope of the appended claims.
    Application text document 2010-01 »26 100009EN
    权利要求:
    Claims (12)
    [1]
    Sealing device for an industrial furnace HJ comprising- comprising a first circular (3), which circularly assumes a first furnace part connecting part (110), comprising a second circular connecting part (110, 120) (120), closing parts are arranged to engage in and sealingly connect to each other so that the oven parts (2,3) are rotatable and tightly arranged in relation to each other in the engagement between the connecting parts (110,120), that the first circular connection (111b) k ärïn e1: e c1 (110) aV the connecting part comprises a circular edge which is arranged to run inside and along one with a longitudinal (1226; 1226a) provided, (120) intersecting along the second circular connecting part len (3) (111b) (121; 122) extending , (121; 122), to the second furnace de- connected, stir so that the circular edge is freely rotatable in the tube (l2l; l22), in that the tube is designed so that it springs back against a (126; 126a) ) position where the notch is closed and arranged to enclose the circular edge (lllb) along substantially the entire length of the edge when the oven parts (2,3) are tightly connected to each other, and by a liquid cooling medium. is arranged in this position to flow through the tube (121; 222) and fill substantially the entire space defined by the combination of the inner surfaces of the tube (121; 122) and the outer surfaces of the circular edge (111b).
    [2]
    Sealing device according to claim 1, characterized in that the cooling medium consists of water.
    [3]
    Sealing device according to claim 1 or 2, characterized in that a supply device is arranged to continuously supply the coolant to the pipe (121; 122) at a point (201; 301) located on the pipe (121; 122) at the top of the pipe. Application text doc 2010-0146 100009EN 10 15 20 25 30 l5 direction of vibration, and in that the sealing device (l00) is arranged to continuously discharge the coolant from the pipe (l2l; l22) by means of gravity.
    [4]
    Sealing device according to claim 3, characterized in that the refrigerant is led away by leakage from the pipe (l2l; l22).
    [5]
    Sealing device according to claim 3 or IL k, characterized in that the pipe (121; 122) is arranged on a furnace part (3; 4) which is fixed, and in that the pipe H21; 122) comprises a fixedly arranged supply line (200). for coolant at the top of the tube (l2l; l22).
    [6]
    Sealing device according to claim 3 or 4, characterized in (2; 3) in that the tube (l1l; l22) is arranged on an oven part which is rotatably movable, (l1l; l22) and in that cooling medium is supplied to the tube with by means of a supply device (300,302) slidable in relation to the pipe (121; 122) son1 is arranged to supply refrigerant through. the cut (l26; l26a) in the tube (l2l; l22).
    [7]
    Sealing device according to claim 6, characterized in that (300, 302) comprises a supply part of the supply device (302) (1226; 1226a) for cooling medium which is arranged to be able to be inserted into the groove and into the pipe (121; 122), and in that the supply device (302), in a cross section which is perpendicular to the main direction of propagation of the tube (211; 122) when the supply means (302) is mounted and which coincides with the cross section of the oven parts (2,3), has a soft bell shape, which bell shape enables tight connection between the supply (302) and the insert (l26; l26a) when the supply part (l2l; l22) (l26; l26a). the device (302) is inserted into the pipe and thus the pipe parts in the groove are pushed apart Application text doc 2010-0146 100009EN 10 15 20 25 30 35 16
    [8]
    Sealing device according to one of the preceding claims (122) (122), characterized in that the tube is made of a flexible material, in that the tube is arranged in a (121) made of a rigid material, of (122) ( 122) outer tube when the tube (121) that the outer diameter of the flexible tube is in rest position is larger than the inner diameter of the outer tube (122) (121), and that the edges of the flexible tube at the groove (126a) are folded in towards the center of the outer tube when mounted in the outer tube (121).
    [9]
    Sealing device according to claim 8, characterized in that the inner tube (122) is in the form of a flexible mat which in the rest position is flat but which is rolled into a tube shape when it is mounted in the outer tube (121).
    [10]
    Sealing device according to claim 9, characterized in that the outer tube (121) is made of metal.
    [11]
    Sealing device according to one of Claims 8 to 10, characterized in that the outer tube (121) is connected to the radial joint (123) of the second furnace part (3) by means of a folded one. sheet metal is arranged. to be able to absorb temperature-induced radial material movements of the second oven part (3).
    [12]
    Sealing device according to one of the preceding claims, characterized in that it is connected to the first furnace part (2) by means of a circumferentially circumferential circumference around the first furnace part (2) (111a) from which the circular relationship extends, (IIIb) to the plane of the sheet metal the sheet metal edge extends' out at. an angle in (111a) plane. Application text document 2010-0146 100009EN
    类似技术:
    公开号 | 公开日 | 专利标题
    JP5035719B2|2012-09-26|Chemical heat exchanger and chemical temperature controller using the same
    MY179444A|2020-11-06|Internal pipeline cooler
    US9721869B2|2017-08-01|Heat sink structure with heat exchange mechanism
    JP2021099219A|2021-07-01|Heat exchanger with tanks, tubes, and retainer
    EP2818818A3|2015-05-20|Heat-dissipating structure having embedded support tube to form internally recycling heat transfer fluid and application apparatus
    SE1050078A1|2011-07-27|Sealing device for rotary sealing
    RU2014153495A|2016-07-20|TUBULATED HEAT EXCHANGER AND INSTALLATION, IN PARTICULAR, REACTOR FOR PRODUCTION OF MELAMINE CONTAINING SUCH HEAT EXCHANGER
    JP6196074B2|2017-09-13|Method of installing thermoelectric power generation element in piping and thermoelectric power generation apparatus
    RU2014146775A|2016-06-10|INTEGRAL ELECTRONIC MODULE WITH COOLING STRUCTURE
    JP2015090219A5|2016-08-04|
    US20160281976A1|2016-09-29|Heat transfer pipe support structure and waste heat recovery boiler
    CN204784425U|2015-11-18|Equipment sled piece and sulfur recovery equipment fixing structure
    WO2008110484A3|2008-11-13|Hot gas channel and channel dividing arrangement
    SE1050079A1|2011-07-27|Sealing device for vertical sealing
    FR3073607B1|2021-03-12|THERMAL APPARATUS
    RU2018131248A|2020-03-03|ELECTRIC COOLING COOLER
    SE535843C2|2013-01-08|Radiation tubes provided with convection enhancing means and method for heating an industrial furnace
    JP6110912B2|2017-04-05|Exhaust pipe connection structure
    RU2766240C1|2022-02-10|Anti-bypass device for shell and tube heat exchangers
    US10626823B2|2020-04-21|Exhaust heat recovery unit
    CN211145723U|2020-07-31|Steel bushing steel steam insulating pipe elbow structure
    WO2011087158A8|2011-11-24|Holder for pipe in heat exchanger, method and device for manufacturing heat exchanger using said holder, and air conditioner and/or outdoor unit having said heat exchanger
    KR101605044B1|2016-03-21|Labyrinth seal
    FR3017452B1|2019-05-24|HEAT EXCHANGER SYSTEM
    KR101626426B1|2016-06-08|The valve device
    同族专利:
    公开号 | 公开日
    SE534452C2|2011-08-30|
    EP2529170A1|2012-12-05|
    WO2011093773A1|2011-08-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SU737748A1|1978-10-04|1980-05-30|Производственное Объединение "Центроэнергоцветмет"|Sealing arrangement for furnace with rotary drum|
    DE3236561A1|1982-10-02|1984-04-05|Metallgesellschaft Ag, 6000 Frankfurt|Device for sealing a rotating tube|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050078A|SE534452C2|2010-01-26|2010-01-26|Sealing device for rotary sealing|SE1050078A| SE534452C2|2010-01-26|2010-01-26|Sealing device for rotary sealing|
    PCT/SE2011/050076| WO2011093773A1|2010-01-26|2011-01-25|Sealing device for rotatable sealing|
    EP20110737362| EP2529170A1|2010-01-26|2011-01-25|Sealing device for rotatable sealing|
    [返回顶部]