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公开(公告)号：EP1597429B1
公开(公告)日：2012-05-02
申请号：EP04708759.8
申请日：2004-02-06
申请人： ABB Ltd.
IPC分类号： D21F7/00
CPC分类号： D21F7/008
摘要： A steam distributor (1) that uses a porous metal plate to replace the conventional screen plate (3) of a steam shower for distributing steam to a moving web (2) such as the web of a paper making machine. Steam showers using a steam distributor with this porous metal plate can deliver extremely uniform steam to the surface of a paper web. Profiling steam showers constructed by using an array of the steam distributors are able to deliver the best profiling results for various paper products. The porous metal plate can be considered as an equivalent of a screen plate with thousands of micro-orifices arranged tightly in both the machine direction and the CD direction.
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公开(公告)号：EP1554431B1
公开(公告)日：2008-03-05
申请号：EP03769390.0
申请日：2003-10-14
申请人： ABB Ltd.
IPC分类号： D21G7/00
摘要： An apparatus and method to use steam to atomize water to produce a mixture of moisture and heat for application to the web of a paper machine for both production improvement and paper quality control. The method allows independent droplet size and heat control in the mixture, resulting in flexibility that can not be offered by conventional steam showers or water spray systems individually. In one embodiment the apparatus consists of a plurality of actuator nozzle modules (10) which control the water volume flow feeding the nozzle (22) through a pneumatic pressure signal. Pressurized steam feeding the nozzle (22) is used to break the water into fine droplets. The resulting nozzle spray is a mixture of moisture in fine water droplets and steam vapor, and heat stored in the steam. Alternatively, a plurality of steam valves can be used to regulate the steam volume flow feeding each atomizing nozzle.
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公开(公告)号：EP1554431A1
公开(公告)日：2005-07-20
申请号：EP03769390.0
申请日：2003-10-14
申请人： ABB Ltd.
IPC分类号： D21G7/00
摘要： An apparatus and method to use steam to atomize water to produce a mixture of moisture and heat for application to the web of a paper machine for both production improvement and paper quality control. The method allows independent droplet size and heat control in the mixture, resulting in flexibility that can not be offered by conventional steam showers or water spray systems individually. In one embodiment the apparatus consists of a plurality of actuator nozzle modules (10) which control the water volume flow feeding the nozzle (22) through a pneumatic pressure signal. Pressurized steam feeding the nozzle (22) is used to break the water into fine droplets. The resulting nozzle spray is a mixture of moisture in fine water droplets and steam vapor, and heat stored in the steam. Alternatively, a plurality of steam valves can be used to regulate the steam volume flow feeding each atomizing nozzle.
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公开(公告)号：EP1597429A1
公开(公告)日：2005-11-23
申请号：EP04708759.8
申请日：2004-02-06
申请人： ABB Ltd.
IPC分类号： D21F7/00
CPC分类号： D21F7/008
摘要： A steam distributor (1) that uses a porous metal plate to replace the conventional screen plate (3) of a steam shower for distributing steam to a moving web (2) such as the web of a paper making machine. Steam showers using a steam distributor with this porous metal plate can deliver extremely uniform steam to the surface of a paper web. Profiling steam showers constructed by using an array of the steam distributors are able to deliver the best profiling results for various paper products. The porous metal plate can be considered as an equivalent of a screen plate with thousands of micro-orifices arranged tightly in both the machine direction and the CD direction.
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