CN107237889A - 一种新型棱鳍复合垫片 - Google Patents
一种新型棱鳍复合垫片 Download PDFInfo
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- CN107237889A CN107237889A CN201710529876.9A CN201710529876A CN107237889A CN 107237889 A CN107237889 A CN 107237889A CN 201710529876 A CN201710529876 A CN 201710529876A CN 107237889 A CN107237889 A CN 107237889A
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- 239000000203 mixture Substances 0.000 title claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 238000010030 laminating Methods 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 4
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- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 4
- 230000002146 bilateral effect Effects 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract description 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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Abstract
本发明提供的一种新型棱鳍复合垫片，即在金属板上制造细的金属突纹(即突起的金属)，突纹的高度约在0.3～3mm,突纹的尖部宽度约在0.3～3.5mm,在突纹上再铺盖覆合层，突纹为同心圆布置，覆合层采用非金属材料或软金属材料。非金属覆合层最常用的是柔性石墨，非金属覆合层也可以采用聚四氟乙烯。根据需要突纹可以在金属的单侧或双侧制造。
Description
技术领域
本发明属于一种用于石油、化工领域的设备静密封上，更具体的说涉及一种新型棱鳍复合垫片。
背景技术
在石化设备中，如换热器或空冷式热交换器(简称空冷器)等都需要大量的静密封，比如空冷器的丝堵管箱的丝堵密封和换热器的管嘴密封，在石油炼化和化工过程中广泛实用，但是有些工况由于温度的变化导致泄漏，有时由于同种材质硬度差和加工精度的问题导致泄漏，大量的泄露为这些石化设备的运行带来隐患。
传统的静设备垫片大体有这几种，非金属垫片，硬度低，利于低压非易燃易爆介质；缠绕垫片和波齿复合垫片，密封效果好，有抗温度交变载荷的能力，但不利于制造小垫片和窄垫片；纯金属垫片，密封效果较好，但对加工精度要求高，硬度差要求高。检索的专利复合垫片均是将金属骨架作成各种波纹形状，根据实验，这些波纹形状的密封形式在通常情况下是没有问题的，但是制作这样的垫片实验证明，在旋转装配的工况，比如空冷器的小直径丝堵密封，其上的复合部分如石墨，均会大量脱落，无法保证密封。
目前，类似空冷器的丝堵密封或换热器的管嘴密封，国内外只能选用金属垫片密封，经常泄露，直接威胁着装置的安全，我国西北某石化炼油厂的大火，就是由于换热器的管嘴密封泄露导致的。
发明内容
为了克服上述现有技术的不足，本发明的目的是提供一种新型棱鳍复合垫片，使其能满足承受高温高压的场合，同时可以在温度压力变化的交变工况下运行。
为实现上述目的，本发明提供的一种新型棱鳍复合垫片，即在金属板上制造细的金属突纹(即突起的金属)，突纹的高度约在0.3～3mm,突纹的尖部宽度约在0.3～3.5mm,在突纹上再铺盖覆合层，突纹为同心圆布置，覆合层采用非金属材料或软金属材料。非金属覆合层最常用的是柔性石墨，非金属覆合层也可以采用聚四氟乙烯。根据需要突纹可以在金属的单侧或双侧制造。
本发明的优点在于：
垫片制造出突纹结构，而不是公知的波纹凹槽，突纹结构更利于实现线密封，实践证明，与公知的产品比较，最大的优点在于在旋转安装时，密封面的摩擦不会损失覆合层，同时由于突纹的线密封作用，使得其密封更耐高温高压。实践证明，更换此种垫片后其泄漏率大大降低，本发明制造成本低，经济实用。
可拆卸更换。
结构简单，材料成本低，实用性强。
适用于各类材料的使用，特别适用于不锈钢和镍基合金材料，保证了产品的密封可靠性。
附图说明
图3为公知的波齿复合垫片横截面典型的结构示意图。
图1为本发明的一种新型棱鳍复合垫片结构示意图。
图2为复合垫片主视图和俯视图。
图1中包括：垫片金属本体1、垫片金属突纹2、覆合层3。
具体实施方式
下面结合附图1、图2、图3对本发明的实施例进行说明，本实施例和说明书中描述的只是说明本实施例的原理，本发明并不局限于实施例，结合使用领域的扩大，本发明将会有改进或变化，这些变化和改动都将是要求保护的范围内，比如突纹的数量是根据垫片的大小确定的，不限于图示的2个，比如突纹的形状可以是矩形、三角形或其它形状，但并不会改变本发明的原理。
一种新型棱鳍复合垫片，如图1中垫片金属本体1上加工出金属突纹2，突纹的高度约在0.3～3mm,突纹的尖部宽度约在0.3～3.5mm,在突纹2上复合非金属或软金属覆合层，如复合柔性石墨。本发明的形状与图3中公知的波齿复合垫的金属骨架区别较大，图3中的金属骨架1加工出弧形凹槽，占用面积较大，对于直径小的垫片无法加工，而上面的覆合层2复合在凹槽中，也极易脱落，而本发明的突纹较细，占有横向截面的面积较小，更适合与小垫片，突纹之间便于复合柔性石墨，突纹支撑着覆合层，覆合层不会脱落。根据需要突纹可以在金属的单侧或双侧制造。本发明在实施时的加工精度要求非常高，一般需要数控机床才能完成。
Claims (3)
1.一种新型棱鳍复合垫片，包括金属本体(1)和非金属覆合层(3)，其特征在于复合垫片在金属本体(1)上加工出金属突纹(2)。
2.根据权利要求1所述的一种新型棱鳍复合垫片，其特征在于：所述覆合层(3)为柔性石墨。
3.根据权利要求1所述的一种新型棱鳍复合垫片，其特征在于：所述覆合层(3)为聚四氟乙烯。
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| CN201710529876.9A CN107237889A (zh) | 2017-07-03 | 2017-07-03 | 一种新型棱鳍复合垫片 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080245434A1 (en) * | 2005-03-28 | 2008-10-09 | Motoshige Hibino | Composite Hose with a Corrugated Metal Tube and Method for Making the Same |
| CN202834060U (zh) * | 2012-09-26 | 2013-03-27 | 中国石油化工股份有限公司 | 一种波纹层叠的复合密封垫片 |
| CN206112330U (zh) * | 2016-08-27 | 2017-04-19 | 慈溪博格曼密封材料有限公司 | 包边复合垫片 |
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2017
- 2017-07-03 CN CN201710529876.9A patent/CN107237889A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080245434A1 (en) * | 2005-03-28 | 2008-10-09 | Motoshige Hibino | Composite Hose with a Corrugated Metal Tube and Method for Making the Same |
| CN202834060U (zh) * | 2012-09-26 | 2013-03-27 | 中国石油化工股份有限公司 | 一种波纹层叠的复合密封垫片 |
| CN206112330U (zh) * | 2016-08-27 | 2017-04-19 | 慈溪博格曼密封材料有限公司 | 包边复合垫片 |
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Application publication date: 20171010 |