• 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:
    An arrangement for installations of monitoring sensors of a vessel (1) for treatment of lignocellulosic material, which vessel (1) has a central pipe (2) comprising at least one concentric pipe (3), which is mounted coaxially within the vessel (1). At least one sensor channel (4) is arranged along the outer wall of the central pipe (2) and that the at least one sensor channel (4) is connected to a cable conduit (5), which cable conduit (5) connects the exterior of the vessel (1) to the at least one sensor channel (4). An outer wall (6) of the sensor channel may be a concentric pipe on the central pipe (2) or it is welded from both sides of the outer wall (6) onto the central pipe (2). The sensor channel (4) may contain subchannels (7).
    公开号:FI20185988A1
    申请号:FI20185988
    申请日:2018-11-22
    公开日:2020-05-23
    发明作者:Aki Muhli；Tomi Suikki
    申请人:Andritz Oy；
    IPC主号:
    专利说明:

    [20] [20] 2 Fig. 4 shows an embodiment of a cable conduit 5 arrangement on top of the sensor channel = 4. A sensor channel 4 extends to a cable channel 5 higher than the coaxial pipes 3 in this N embodiment. This is best achieved by the embodiment of fig. 2, as it is costly to extend a I coaxial outer wall 6 of the sensor channel 4 over the inlet tubes of coaxial pipes 3. Similarly, * 30 the arrangement of fig. 2 can be extended below the central pipe 2 where the wall thickness E of the digester 1 vessel will be much thicker and pressure higher than in the upper part and ® making openings is thus more critical and should be avoided. By the extensions, the & sensors 11, which need to be installed to the digester at those higher and lower elevations can be installed on the sensor channel 4. Preferably every sensor channel 4 and their subchannels 7 are connected to the same cable conduit 5. Otherwise the channels hinderand divert downflow of the treated material which may cause uneven treatment results.
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    权利要求:
    Claims (15)
    [1] 1. An arrangement for installations of monitoring sensors of a vessel 1 for treatment of lignocellulosic material, which vessel (1) has a central pipe (2) comprising at least one concentric pipe (3), which is mounted coaxially within the vessel (1), characterized in that atleast one sensor channel (4) is arranged along the outer wall of the central pipe (2) and that the at least one sensor channel (4) is connected to a cable conduit (5), which cable conduit (5) connects the exterior of the vessel (1) to the at least one sensor channel (4).
    [2] 2. The arrangement of claim 1, wherein an interior of an outer wall (6) of the at least one sensor channel (4) is longitudinally divided to at least two sensor channels (4) and the outer wall (6) is a concentric pipe on the central pipe (2).
    [3] 3. The arrangement of claim 1, wherein an outer wall (6) of the at least one sensor channel (4) is welded from both sides of the outer wall (6) onto the central pipe (2).
    [4] 4. The arrangement of any of the preceding claims, wherein the sensor channel (4) contains at least one subchannel (7).
    [5] 5. The arrangement of any of the preceding claims, wherein the at least one subchannel — (7) is joined only to the wall (6) of the sensor channel (4).
    [6] 6. The arrangement of any of the preceding claims, wherein the sensor channel (4) extends to higher and/or to lower elevations than the central pipe (2). —
    [7] 7. The arrangement of any of the preceding claims, wherein the cable conduit (5) is © connected to the top and/or lower end of the sensor channel (4). & =
    [8] 8. The arrangement of any of the preceding claims, wherein the cable conduit (5) has at N least one cable tube (9) and/or an evacuation tube (14) within the cable conduit (5) which I 30 cable tube (9) extends into a sensor channel (4) or into a subchannel (7) and the evacuation = tube (9) extends to the bottom of the sensor channel (4). ©
    [9] 9. The arrangement of any of the preceding claims, wherein the sensors (11) are for sensing temperature, chip level, liquid interface, liquid level and/or residual alkali concentration.
    [10] 10. The arrangement of any of the preceding claims, wherein the arrangement contains at least one sensor channel (4) or a subchannel (7), which has cables (8) for only one type of sensors (11).
    [11] 11. The arrangement of any of the preceding claims, wherein the cables (8) of the sensors (11) are of different length and they are bundled so that the cables (8) extend only up to their installing positions.
    [12] 12. The arrangement of any of the preceding claims, wherein one cable bundle has cables (8) for only one type of sensors (11).
    [13] 13. The arrangement of any of the preceding claims, wherein at least one sensor channel (4) or a subchannel (7) has an insulation against thermal conductivity from the central pipe (2).
    [14] 14. The arrangement of claim 13, wherein the sensor channel (4) or subchannel (7) which is insulated against thermal conductivity from the outermost concentric pipe (3) contains thermal sensors (11), which sensors (11) do not extend out of the sensor channel (4) to the interior of the vessel (1).
    [15] 15. The arrangement of any of the preceding claims, wherein at a same elevation level exist at least two same type of sensors (11) on or within the sensor channel(s) (4) and/or same type of sensors (11) exist at different elevations. 00
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    同族专利:
    公开号 | 公开日
    BR112021008307A2|2021-08-03|
    EP3884099A1|2021-09-29|
    WO2020104730A1|2020-05-28|
    US20220018067A1|2022-01-20|
    FI128975B|2021-04-15|
    CA3118807A1|2020-05-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FI80526C|1986-09-08|1990-06-11|Savcor Consulting Oy|Method for controlling cellulose boiling|
    US5167769A|1990-11-14|1992-12-01|Pulp And Paper Research Institute Of Canada|Particle level sensor|
    JPH06136678A|1992-10-29|1994-05-17|Toshiba Corp|Apparatus for continuously controlling distribution of temperature of digester|
    US5882477A|1997-02-10|1999-03-16|Ahlstrom Machinery, Inc.|Continuous digester with a low temperature gas-phase|
    US20090188641A1|2008-01-30|2009-07-30|Andritz Inc.|Method and system for measuring and controlling digester or impregnation vessel chip level by measuring chip pressure|
    US8647469B2|2010-08-25|2014-02-11|Metso Paper Sweden Ab|Method, system and withdrawal screen section for impregnating chips|
    US20130248127A1|2012-03-22|2013-09-26|Savcor Forest Oy|Method and arrangement for measuring and controlling chip and/or liquid level|
    WO2016112203A1|2015-01-07|2016-07-14|Andritz Inc.|System and method for monitoring and control of multiple processing zones within pressurized vessels|
    EP3464714A4|2016-05-27|2019-12-25|Valmet AB|Double alkali charging for chip impregnation|
    法律状态:
    2021-04-15| FG| Patent granted|Ref document number: 128975 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20185988A|FI128975B|2018-11-22|2018-11-22|An arrangement for installation of monitoring sensors of a treatment vessel for lignocelllulosic material|FI20185988A| FI128975B|2018-11-22|2018-11-22|An arrangement for installation of monitoring sensors of a treatment vessel for lignocelllulosic material|
    US17/295,596| US20220018067A1|2018-11-22|2019-11-21|An arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic material|
    BR112021008307-3A| BR112021008307A2|2018-11-22|2019-11-21|arrangement for installing monitoring sensors in a vessel for treating lignocellulosic material|
    PCT/FI2019/050834| WO2020104730A1|2018-11-22|2019-11-21|An arrangement for installation of monitoring sensors of a treatment vessel for lignocelllulosic material|
    CA3118807A| CA3118807A1|2018-11-22|2019-11-21|An arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic material|
    EP19817800.6A| EP3884099A1|2018-11-22|2019-11-21|An arrangement for installation of monitoring sensors of a treatment vessel for lignocelllulosic material|
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