CN2247254Y - 石化装置复合密封垫 - Google Patents

石化装置复合密封垫 Download PDF

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Publication number
CN2247254Y
CN2247254Y CN 95240997 CN95240997U CN2247254Y CN 2247254 Y CN2247254 Y CN 2247254Y CN 95240997 CN95240997 CN 95240997 CN 95240997 U CN95240997 U CN 95240997U CN 2247254 Y CN2247254 Y CN 2247254Y
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陈家祺
孙明霞
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PETROLEUM REFINERY OF YANGZI PETROLEUM CHEMICAL CO SINOPEC
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PETROLEUM REFINERY OF YANGZI PETROLEUM CHEMICAL CO SINOPEC
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Abstract

石化装置复合密封垫由铁包石棉垫芯体、石墨纸衬垫和塑膜外包层组成,石墨纸衬垫贴衬于外包层内、铁包垫芯体的上、下端面上。本实用新型具有足够的强度和表面弹性,便于安装,密封效果好,特别适用于石化装置大直径静密封。

Description

石化装置复合密封垫
本实用新型涉及一种密封垫,特别是一种石化装置复合密封垫。
目前,在石油化工设备中,用于换热器等大直径管口静密封处的环形密封垫有两种,一种是铁包石棉垫,一种是柔性石墨缠绕垫。前者强度高,但对密封部位的精度要求亦高,经使用后的设备,一但表面变得粗糙或有微小的划痕,则铁包石棉垫对该处的密封就难以保证,易发生泄漏。后者能进行柔性密封,不易泄漏,但本身强度低,对安装条件要求高,螺栓稍过紧,石墨垫会散架,过松又不能很好地密封。
本实用新型的目的是,针对上述现有技术的不足之处进行改进,提供一种具有足够强度、便于安装、密封效果好的石化装置复合密封垫。
本实用新型的技术解决方案如下:石化装置复合密封垫由铁包石棉垫芯体、石墨纸衬垫和塑膜外包层组成,石墨纸衬垫贴衬于外包层内、铁包垫芯体的上、下端面上。
下面参照附图并结合实施例对本实用新型进行详细描述。
图1为本实用新型纵剖结构示意图。
如图1所示,本实用新型石化装置复合密封垫呈圆环形或椭圆环形,由铁包石棉垫芯体1、石墨纸衬垫2、3、塑膜外包层4组成,两块石墨纸衬垫2、3分别贴衬于外包层4内、铁包垫芯体1的上、下端面上。实施例中,塑膜外包层采用聚四氟乙烯膜,通过模压包覆在石墨纸衬垫外面,使铁包垫芯体和石墨纸衬垫牢固地复合成一体。
本实用新型将铁包石棉垫和柔性石墨垫复合成一体,充分发挥了这两种密封垫各自的优点,克服了它们单独使用的缺点,具有足够的强度和表面弹性,便于安装,密封效果好,特别适用于石化装置大直径静密封,延长石化装置使用寿命,减少维修工作量。

Claims (1)

1、石化装置复合密封垫,其特征是由铁包石棉垫芯体、石墨纸衬垫和塑膜外包层组成,石墨纸衬垫贴衬于外包层内、铁包垫芯体的上、下端面上。
CN 95240997 1995-12-05 1995-12-05 石化装置复合密封垫 Expired - Fee Related CN2247254Y (zh)

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CN 95240997 CN2247254Y (zh) 1995-12-05 1995-12-05 石化装置复合密封垫

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CN 95240997 CN2247254Y (zh) 1995-12-05 1995-12-05 石化装置复合密封垫

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CN2247254Y true CN2247254Y (zh) 1997-02-12

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CN 95240997 Expired - Fee Related CN2247254Y (zh) 1995-12-05 1995-12-05 石化装置复合密封垫

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100395473C (zh) * 2006-04-06 2008-06-18 马志刚 金属管环滚压密封垫片及其制造方法
CN102378857B (zh) * 2009-02-13 2013-09-11 费德罗-莫格尔公司 多层复合衬垫

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100395473C (zh) * 2006-04-06 2008-06-18 马志刚 金属管环滚压密封垫片及其制造方法
CN102378857B (zh) * 2009-02-13 2013-09-11 费德罗-莫格尔公司 多层复合衬垫

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