• 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:
    Exhaust gas catalytic converter (10), with a catalytic converter housing (11), with a plurality of catalytic converter modules (14) accommodated in the catalytic converter housing, with a support grid (15) and a counter-holder (17) having a plurality of counter-support struts (16) running parallel to one another, the catalyst modules thus being positioned between the Support grid (15) and the counter-holder (17) are clamped so that the catalyst modules (14) abut the support grid (15) with second flow-through ends and the counter-holder (17) with two flow-through ends, and with several depressors (18) which engage the housing structures (19) of the catalyst housing and press the counter support struts (16) against the second flowed ends of the catalyst modules (14). In the area of each counter support strut (16), a depressor (18) engages at opposite ends of the respective counter support strut (16), which presses with a first section (20) against the respective counter support strut (16), which presses with a second section (21 ) protrudes into a recess (22) of the respective counter support strut (16) and which extends with a third section (23) through a housing structure (19) of the catalytic converter housing (11) extending transversely to the respective counter support strut (16). The respective depressor (18) has a spring element (25), which is supported on the one hand on the first section (20) of the respective depressor (18) and on the other hand on the respective housing structure (19).
    公开号:CH715416A2
    申请号:CH01110/19
    申请日:2019-09-03
    公开日:2020-04-15
    发明作者:Coskun Baydak Mehmet；Hauser Martin；Schlicht Thomas；Reck Vivian；Liepert Johannes
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to an exhaust gas catalytic converter according to the preamble of claim 1.
    [0002] DE 10 2015 004 006 A1 and DE 10 2015 219 827 A1 each disclose exhaust gas catalysts for marine diesel and stationary diesel internal combustion engines, in particular SCR exhaust gas catalysts.
    [0003] DE 10 2015 004 006 A1 discloses an exhaust gas catalytic converter with a catalytic converter housing and several catalytic converter modules accommodated in the catalytic converter housing, the catalytic converter modules forming one or more catalytic converter units. Each catalytic converter module has a catalytic converter body through which exhaust gas flows and a housing, the respective catalytic converter body being accommodated in the respective housing and surrounded in sections by the same. The exhaust gas catalytic converter furthermore has a support grid and a counter-holder having a plurality of counter-struts running parallel to one another. The catalyst modules are clamped between the support grid and the counter support struts of the counter support, in such a way that the catalyst modules bear with first flowing ends against the support grid and with second flow ends against the counter support. The catalytic converter also has several depressors. The counter-holding struts can be pressed against the second flowed-through ends of the catalyst modules via the depressors, which are supported on a housing structure of the catalyst housing. The depressors are supported with a first end on a housing structure and with a second end on a depressor strut, the depressor strut pressing the counter-holding struts against the second flowed-through ends of the catalyst modules.
    There is a need for an exhaust gas catalytic converter which, on the one hand, is easier to assemble and disassemble, and in which, on the other hand, a defined, uniform force can be applied to the catalytic converter modules even under operating conditions, even when temperature cycles are run through.
    Proceeding from this, the present invention has for its object to provide a novel catalytic converter. This object is achieved by an exhaust gas catalytic converter according to claim 1.
    According to the invention engages in the area of each counter support strut at opposite ends of the respective counter support strut, a depressor, which presses with a first section against the respective counter support strut, which projects with a second section into a recess of the respective counter support strut, and which engages with one third section extends through a housing structure of the catalyst housing which extends transversely to the respective counter support strut.
    The respective depressor has a spring element, which is supported on the one hand on the first section of the respective depressor and on the other hand on the respective housing structure of the catalyst housing. The spring force of the respective spring element presses the first section against the respective counter support strut and the second section into the recess of the respective counter support strut.
    Such a catalytic converter can be easily assembled and disassembled. Furthermore, with such an exhaust gas catalytic converter, a defined, uniform force can be applied to the catalytic converter modules, specifically when thermal temperature cycles are run through.
    According to an advantageous further development of the exhaust gas catalytic converter according to the invention, the respective depressor with the third section extends completely through the respective housing structure of the catalyst housing extending transversely to the respective counter support strut and is located with a fourth section on a side of the housing structure of the catalyst housing facing away from the counter support strut compared to the housing structure. By applying a force to the fourth section of the respective press-down device that is greater than the spring force of the spring element and counteracts the same, the first section of the respective press-down device can be lifted off the respective counter-holding strut and the second section of the respective press-down device can be moved out of the recess in the respective counter-holding strut . These details are used for easy assembly and disassembly of the catalytic converter. Furthermore, these details serve to apply a defined, uniform force to the catalyst modules.
    According to a further advantageous development of the exhaust gas catalyst according to the invention, a travel limiter is arranged on the first section of the respective depressor, namely on a side facing away from the respective counter support strut and facing the respective housing structure of the catalytic converter housing, which has a spring travel directed against the spring force of the spring element limited. This can prevent the spring elements from being damaged during assembly and disassembly of the exhaust gas catalytic converter.
    According to a further advantageous development of the exhaust gas catalyst according to the invention, the respective recess of the respective counter support strut, into which the second section of the respective depressor projects, is larger than the second section, so that the second section of the respective depressor with play in the longitudinal direction of the counter support strut in the respective recess protrudes. This can be used to compensate for thermally induced elongation of the counter support struts.
    Preferably, the spring elements of the depressors are dimensioned such that when the catalytic converter housing and the catalyst modules are heated to operating temperature during operation of the exhaust gas catalytic converter, the spring elements have a spring force in the order of 50 N to 200 N per catalyst module, in particular in the order of magnitude from 75 N to 150 N per catalyst module on the catalyst modules. The depressors are dimensioned such that when the catalytic converter housing and the catalyst modules have cooled down to ambient temperature when the exhaust gas catalytic converter is not in operation, the force that can be applied to release the respective depressor is greater than at least 25%, preferably at least 50% the spring force of the respective spring element, such a dimensioning of the spring elements and depressor allows on the one hand easy assembly and disassembly of the exhaust gas catalytic converter, on the other hand a defined force can be applied to the catalytic converter modules even when going through temperature cycles in order to prevent them from accidentally loosening.
    Preferred further developments of the invention result from the dependent claims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being restricted to this. It shows:<tb> Fig. 1: <SEP> a schematic side view of an exhaust gas catalyst according to the invention;<tb> Fig. 2: <SEP> a schematic top view of the exhaust gas catalyst according to the invention;<tb> Fig. 3: <SEP> a detail of the catalytic converter of FIGS. 1 and 2 in a first state;<tb> Fig. 4: <SEP> a depressor of the exhaust gas catalytic converter of Figures 1 and 2 alone;<tb> Fig. 5: <SEP> the detail of FIG. 3 in a second state.
    The invention relates to an exhaust gas catalytic converter of an internal combustion engine for marine or marine applications.
    In particular, the exhaust gas catalyst according to the invention is designed as an SCR exhaust gas catalytic converter of a marine diesel internal combustion engine.
    An exhaust gas catalytic converter 10 according to the invention has a catalytic converter housing 11. In the exemplary embodiment shown, the catalytic converter housing 11 has a plurality of side walls 12 and a bottom wall 13.
    The exhaust gas catalytic converter 10 also has a plurality of catalyst modules 14 accommodated in the catalyst housing 11. Each of the catalyst modules 14 has a preferably metallic housing and a ceramic catalyst body, the respective catalyst body of the respective catalyst module 14 being accommodated in the respective housing and surrounded in sections by the same is. For reasons of a simpler illustration, the catalyst body and housing of the respective catalyst module 14 are not shown separately, rather the catalyst module 14 is shown schematically as a unit.
    The exhaust gas catalytic converter 10 has a support grid 15, which in the exemplary embodiment shown forms the bottom wall 13 of the catalyst housing 11, and a counter-holder 17 comprising a plurality of counter-support struts 16 running parallel to one another. The catalyst modules 14 are clamped between the support grid 13 and the counter-holder 17 , namely in such a way that the catalyst modules 14 rest with first flow-through ends on the support grid 15 and with opposite second flow-through ends against the counter-holder 17, namely the counter-holder struts 16.
    In the exemplary embodiment shown, the catalyst modules 14 have a cuboid contour with a rectangular cross section. The catalyst modules 14 positioned in the catalyst housing 11 are arranged in the form of several rows and columns, that is to say in an array, next to one another and one above the other. The counter support struts 16 of the counter support 17 extend either in the direction of the rows or in the direction of the columns of the array of catalyst modules 14 along edges of the catalyst modules 14, wherein if the counter support struts 16 extend, for example, in the direction of the rows of the catalyst modules 14, at least some of the counter support struts 16, namely the middle counter support struts 16, overlap over the edges of the catalyst modules 14 of adjacent rows of catalyst modules 14.
    [0020] The exhaust gas catalytic converter 10 has a plurality of depressors 18. The counter-holding struts 16 of the counter-holder 17 can be pressed against the second ends of the catalyst modules 14 via the depressors 18, which are supported on the housing structures 19 of the catalyst housing 11. In the area of each counter support strut 16 of the counter support 17, a depressor 18 engages at the opposite ends of the respective counter support strut 16. Each pusher 18 has a first section 20 which presses against the respective counter support strut 16. On a side of the first section 20 facing the respective counter support strut 16, a second section 21 of the depressor 18 protrudes from the first section 20, which projects into a recess 22 of the respective counter support strut 16. Furthermore, the respective depressor 18 has a third section 23, which extends through the respective housing structure 19 of the catalyst housing 11, the respective housing structure 19 extending transversely to the respective counter support strut 16. This third section 23 of the respective counter-holder 18 extends completely through the respective housing structure 19 of the catalytic converter housing 11, which extends transversely to the respective counter-holder strut 16, and stands with a fourth section 24 on a side of the housing structure 16 facing away from the counter-holder strut 16 opposite the housing structure 19 Catalyst housing 11 before.
    In the exemplary embodiment shown, the hold-down device 18 with the sections 20, 21, 23 and 24 is a threaded screw with a nut, the nut providing the first section 20 of the depressor 18, a threadless shaft of the threaded screw providing the third Provides section 23 of the depressor 18, a screw head 24 providing the fourth section 24 of the depressor 18, and an area of a threaded portion of the screw shaft projecting from the nut providing the second section 21 of the depressor 18.
    The respective depressor 18 also has a spring element 25 designed as a compression spring. The respective spring element 25 is supported on the one hand on the first section 20 of the respective depressor 18, namely on a side of the first section 20 facing away from the respective counter-brace strut 16, on the other hand, the spring element 25 is supported on the respective housing structure 19 of the catalyst housing 11, namely on a side of the respective housing structure 19 facing the first section 20 of the depressor 18. The respective housing structure 19 is designed as a crossbar to the respective counter support strut 16. The spring element 25 of the respective press-down device 18 provides a spring force which presses the first section 20 of the press-down device 18 against the respective counter-holding strut 16 of the counter-holding device 17 and thus the second section 21 of the respective pressing-down device 18 into the corresponding recess 22 of the respective counter-holding strut 16.
    By applying a force to the fourth section 24 of the respective depressor 18, which is greater than the spring force of the spring element 25 of the respective depressor 18 and the opposite, the first section 20 of the respective depressor 18 can be lifted off the respective counter support strut 16 and second section 21 of the respective depressor 18 can be moved out of the recess 22 of the respective counter support strut 16, so that individual catalyst modules 14 can then be easily assembled and disassembled.
    Fig. 5 shows a highly schematic of a corresponding tool 26 which engages the fourth section 24 of the respective depressor 16 in order to apply a force opposing the spring force of the spring element 25 to the respective hold-down device 18.
    As already stated, the second section 21 of the respective depressor 18 engages in a corresponding recess 22 of the respective counter support strut 16. This recess 22 of the counter-holding strut 16 is dimensioned such that it is larger than the second section 21, so that the second section 21 protrudes with play in the longitudinal direction of the counter-holding strut 16 into the respective recess 22, whereby in particular thermally induced changes in length of the counter-holding strut 16 can be compensated or compensated.
    On the first section 20 of the respective depressor 18, a travel limiter 27 is arranged on a side facing away from the respective counter support strut 16 and facing the housing structure 19. If, in the sense of FIG. 5, a force opposite the spring force of the spring element 25 is exerted on the respective depressor 18 via the tool 26, the spring travel limiter 27 limits a spring travel of the spring element 25 directed against the spring force of the spring element 25, in order to prevent damage to avoid the same.
    In the exemplary embodiment shown, the travel limiter 27 is designed as a disk 28 with at least one projection 29, the disks 28 extending transversely to the travel of the spring element 25 and the or each projection 29 in the direction of the travel of the spring element 25. The projection 29 can, for example, extend around the edge of the disk 28 like a cylinder or sleeve.
    3 and 5, a spring travel of the spring element 25 is visualized in each case by a dimension Y. This dimension Y corresponds to the current distance between the first section 20 of the respective depressor 18 and the housing structure 19, through which the respective depressor 18 extends with its third section 23. A dimension X visualizes a distance between the first flow-through end of the catalyst modules 14 and a side of the respective counter support strut 16 facing away from the catalyst modules 14.
    In operation, both the housing 11 of the exhaust gas catalytic converter 10 and the catalytic converter modules 14 are subject to a thermally induced expansion or change in size. The depressors 18 are preferably dimensioned in such a way, in particular the length of the second section 21 of the respective depressors 18, that when the catalytic converter housing 11 and the catalytic converter modules 14 have cooled to ambient temperature when the exhaust gas catalytic converter is not in operation, the force that is released via the tool 26 of the respective depressor 18 must be applied by at least 25%, preferably by at least 50%, greater than the spring force of the respective spring element 25, which presses the respective second section 21 into the respective recess 22. The spring elements 25 of the depressors 18 are preferably dimensioned such that when the catalytic converter housing 11 and the catalyst modules 14 are each heated to operating temperature during operation of the exhaust gas catalytic converter, the spring elements 25 of all depressors 18 in their entirety have a spring force of the order of 50 N to Apply 200 N per catalyst module 14, in particular on the order of 75 N to 150 N per catalyst module 14, to the catalyst modules 14. As a result, on the one hand, when the catalyst modules 14 and catalyst housing 11 have cooled to ambient temperature, the catalyst modules 14 can be easily assembled and disassembled, on the other hand, the catalyst modules 14 are safely between during operation, i.e. when the catalyst housing 11 and catalyst modules 14 are heated to operating temperature the support grid 15 and the counter-holder 17 are jammed.
    Reference symbol list
    [0030]<tb> 10 <SEP> catalytic converter<tb> 11 <SEP> catalytic converter housing<tb> 12 <SEP> side wall<tb> 13 <SEP> bottom wall<tb> 14 <SEP> catalyst module<tb> 15 <SEP> shelf guides<tb> 16 <SEP> counter support strut<tb> 17 <SEP> counterhold<tb> 18 <SEP> depressors<tb> 19 <SEP> housing structure<tb> 20 <SEP> first section<tb> 21 <SEP> second section<tb> 22 <SEP> recess<tb> 23 <SEP> third section<tb> 24 <SEP> fourth section<tb> 25 <SEP> spring element<tb> 26 <SEP> tool<tb> 27 <SEP> travel limiter<tb> 28 <SEP> disc<tb> 29 <SEP> head start
    权利要求:
    Claims (9)
    [1]
    1. exhaust gas catalytic converter (10), in particular a marine diesel internal combustion engine,with a catalyst housing (11),with a plurality of catalyst modules (14) accommodated in the catalyst housing (11), each catalyst module (14) having a catalyst body through which exhaust gas flows and a housing for the catalyst body, the respective catalyst body being accommodated in the respective housing and being surrounded in sections by the same,With a support grid (15) and a counter support (17) having a plurality of counter support struts (16) running parallel to one another, the catalyst modules (14) being clamped between the support support (15) and the counter support (17) such that the catalyst modules (14) rest with the first flow-through ends on the support grid (15) and opposite second flow-through ends on the counter-holder (17),with a plurality of depressors (18) which engage housing structures (19) of the catalytic converter housing (11) and press the counter support struts (16) of the counter support (17) against the second flowed ends of the catalyst modules (14), characterized in thatin the area of each counter support strut (16), at opposite ends of the respective counter support strut (16), a depressor (18) engages, which presses with a first section (20) against the respective counter support strut (16), which presses with a second section (21) protrudes into a recess (22) of the respective counter support strut (16) and which extends with a third section (23) through a housing structure (19) of the catalytic converter housing (11) extending transversely to the respective counter support strut (16),the respective depressor (18) has a spring element (25), which is supported on the one hand on the first section (20) of the respective depressor (18) and on the other hand on the respective housing structure (19) of the catalyst housing (11).
    [2]
    2. Exhaust gas catalytic converter according to claim 1, characterized in that the respective depressor (18) with the third section (23) extends completely through the respective housing structure (19) of the catalytic converter housing (11) extending transversely to the respective counter support strut (16) and with a fourth section (24) on a side of the housing structure (19) of the catalytic converter housing (11) facing away from the counter support strut (16) protrudes relative to the housing structure (19).
    [3]
    3. Exhaust gas catalytic converter according to claim 1 or 2, characterized in that the spring force of the respective spring element (25) the first section (20) against the respective counter support strut (16) and the second section (21) in the recess (22) of the respective counter support strut (16) presses.
    [4]
    4. Exhaust gas catalytic converter according to claim 2 and 3, characterized in that by applying a force to the fourth section (24) of the respective depressor (18), which is greater than the spring force of the spring element (25) and the opposite, the first section (20 ) of the respective depressor (18) can be lifted off the respective counter support strut (16) and the second section (21) of the respective depressor (18) can be moved out of the recess (22) of the respective counter support strut (16).
    [5]
    5. Exhaust gas catalytic converter according to one of claims 1 to 4, characterized in that the respective recess (22) of the respective counter support strut (16) into which the second section (21) of the respective depressor (18) projects is larger than the second section (21), so that the second section (21) projects with play in the longitudinal direction of the counter support strut (16) into the respective recess (22).
    [6]
    6. Exhaust gas catalytic converter according to one of claims 1 to 5, characterized in that on the first section (20) of the respective depressor (18), namely on one of the respective counter support strut (16) and the respective housing structure (19) of the catalyst housing ( 11) the side of the first section (20) facing the pull, a spring travel limiter (27) is arranged, which limits a spring travel directed against the spring force of the spring element (25).
    [7]
    7. Exhaust gas catalytic converter according to claim 6, characterized in that the travel limiter (27) is designed as a disc (28) with at least one projection (29), the slide (28) transverse to the travel and the or each projection (29) extends in the direction of travel.
    [8]
    8. Exhaust gas catalytic converter according to one of claims 1 to 7, characterized in that the spring elements (25) of the depressor (18) are dimensioned such that when the catalyst housing (11) and the catalyst modules (14) are heated to operating temperature, the Spring elements (25) exert a spring force in the order of 50 N to 200 N per catalyst module, in particular in the order of 75 N to 150 N per catalyst module, on the catalyst modules (14).
    [9]
    9. Exhaust gas catalytic converter according to one of claims 1 to 7, characterized in that the depressors (18) are dimensioned such that when the catalyst housing (11) and the catalyst modules (14) have cooled to ambient temperature, the force required to release of the respective depressor (18) can be applied by at least 25%, preferably by at least 50%, greater than the spring force of the respective spring element (14).
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    同族专利:
    公开号 | 公开日
    NO20191182A1|2020-04-06|
    KR20200038850A|2020-04-14|
    DE102018124468A1|2020-04-09|
    JP2020060182A|2020-04-16|
    CN111005791A|2020-04-14|
    FI20195812A1|2020-04-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP5965857B2|2013-03-27|2016-08-10|ヤンマー株式会社|Exhaust purification equipment|
    DE102015004006A1|2015-03-30|2016-10-06|Man Diesel & Turbo Se|Catalyst unit and catalytic converter|
    DE102015219827A1|2015-03-30|2016-10-06|Man Diesel & Turbo Se|Catalyst unit and catalytic converter|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018124468.1A|DE102018124468A1|2018-10-04|2018-10-04|Catalytic converter|
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