CN2883812Y - Wave-shaped composite sealing gasket - Google Patents
Wave-shaped composite sealing gasket Download PDFInfo
- Publication number
- CN2883812Y CN2883812Y CN 200620100201 CN200620100201U CN2883812Y CN 2883812 Y CN2883812 Y CN 2883812Y CN 200620100201 CN200620100201 CN 200620100201 CN 200620100201 U CN200620100201 U CN 200620100201U CN 2883812 Y CN2883812 Y CN 2883812Y
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- Prior art keywords
- metal
- wave
- pad
- shaped composite
- composite sealing
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Abstract
The utility model relates to a waveform composite sealing gasket, which comprises a sealed support frame which is made by the waveform metal; wherein, the upper and the lower side of the waveform metal are covered with a non-metal soft sealing layer. The utility model supplies a waveform composite gasket with fine sealing performance, high strength and rebound elasticity and long service life.
Description
(1) technical field
The utility model relates to a kind of Wave-shaped composite sealing pad.
(2) background technique
What seal is of a great variety, can be generalized into contact type and non-contact type, and nearly all sealing belongs to direct contact seal.Direct contact seal can be divided into elastomer contact and non-resilient the contact (sealing surface is made with non-elastic materials such as metal, graphite) again.Sealing is one of most widely used component in the equipment.
When normal temperature low pressure, select nonmetal sealing gasket for use, select metal and nonmetal combination seal pad or metallic gasket when pressing in the high temperature for use; When temperature, pressure have than great fluctuation process, select the sealing gasket of good springiness for use; When low temperature, Korrosionsmedium or vacuum condition, the sealing gasket that should consider to have property, technical performances such as the intensity of flange, surface roughness select also to have important relationship to pad simultaneously.
Be in the sealing under the harsh working condition: many tuns (heat exchanger, tower, jar, groove etc.) are arranged in large-size chemical, electric power, smelter, and its working condition often is in high temperature, middle pressure, and medium fluid is as inflammable, explosive, poisonous and harmful.And in equipment operation, temperature, pressure fluctuate, and some needs the tun flanged surface of frequent field-strip being difficult to keep precision after long-term the use, repair very difficultly again, so the leakage problem of sealing surface is an important technological problems.
Existing Composition spacer mainly contains:
(1), metal wound gasket: strengthen resistance to compression by V-type eyelet support, it is fixing for welding that the V-type metal twines circle; Shortcoming is: easily fall apart under pressure vibration, particularly the manufacturing of heavy caliber (800MM) wound gasket is difficult, poor safety performance;
(2), the metallic cover pad: shortcoming is: the sealing surface poor performance, rebound elasticity is poor, particularly heavy caliber coats pad, its dimensional accuracy, contact and sealability is all relatively poor, and can't reusing;
(3), Expanded graphite metal ripple tooth: ripple tooth metal frame needs car system to shape; Also the shortcoming of Cun Zaiing is: the metal crown is easily hindered flanged surface, and metal frame is subjected to the limitation of car system precision, and local thickness's attenuate easily takes place, and easily ftractures under high-temperature condition; And be subjected to the limitation processing heavy caliber pad difficulty of oil (gas) filling device, the cost height;
(4), other Metal corrugated gasket: adopt metal sheet punching press press forming; Shortcoming is: be subjected to the limitation of sheet metal width and press device, processing heavy caliber pad difficulty, cost height, working life lack.
(3) model utility content
In order to overcome the deficiency that working condition lower seal performance poor, highly low, rebound elasticity low, working life short of existing composite sealing pad in temperature, pressure generation fluctuation, the utility model provides a kind of good seal performance, has the Wave-shaped composite sealing pad of high strength high resilience, long service life.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of Wave-shaped composite sealing pad comprises sealed support, and described sealed support is the waveform metal, and the top and bottom of described waveform metal are laminated with nonmetal soft sealing layer.
The ripple spacing of described waveform metal is 1.6～8mm.
The thickness of described waveform metal is 1.0～3.0mm.
The thickness of described pad is 40～60% of ripple spacing.
1., copper the material of described waveform metal is one of following:; 2., aluminium; 3., steel; 4., stainless steel; 5., Monel.
1., graphite the material of described nonmetal soft sealing layer is one of following:; 2., varicosity tetrafluoro.
Working principle of the present utility model is: this pad provides mechanical support by Wavy metal, for satisfying working condition, its resilience is according to the form that adopts and metal thickness, ripple spacing, and the ripple height decides, and can to stick on suitable nonmetal flexible barrier material as required be coating.Generally between 1.0～3.0mm, ripple spacing 1.6～8mm, ripple height are 0.6～1.2mm for this kind pad, the thickness of sheet metal, and the thickness of pad is 40～60% of wavelength.Metallic material commonly used is copper, aluminium, steel, stainless steel, Monel etc., flexible barrier material is generally graphite, varicosity tetrafluoro (250 ℃) etc., this kind pad has the intensity of metal, have the flexible characteristics of waveform again, heatproof, withstand voltage, heatproof pressure fluctuation, low to the flange required precision, favorable sealing property, make easy, the characteristics that price is low.
The beneficial effects of the utility model mainly show: 1, good seal performance; 2, has the high strength high resilience; 3, long service life; 4, low to the required precision of flange; 5, do not damage the flange working surface; 6, manufacturing is easy, cost is low.
(4) description of drawings
Fig. 1 is the schematic cross-section of Wave-shaped composite sealing pad.
(5) embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1
With reference to Fig. 1, a kind of Wave-shaped composite sealing pad comprises sealed support 2, and described sealed support 2 is waveform metals, and the top and bottom of described waveform metal 2 are laminated with nonmetal soft sealing layer 1.Form by gum band bonding between corrugated metal 2 and the nonmetal soft sealing layer 1.
The ripple spacing of described waveform metal 2 is 1.6mm, and the ripple height is 0.6mm.The thickness of described waveform metal 2 is 1.0.The thickness of described pad is 40% of ripple spacing.The material of described waveform metal 2 is a copper.The material of described nonmetal soft sealing layer 1 is a graphite.
The manufacture method of the Wave-shaped composite sealing pad of present embodiment may further comprise the steps: (1), selected strip sheet metal 2, nonmetal soft sealing layer 1, determine the thickness of sheet metal 2;
(2), as required set the spacing and the height of ripple, the strip metal rolling is shaped, obtain waveform metal 2 and be sealed support;
(3), a face with nonmetal soft sealing layer is processed into corrugated;
(4), as required set the thickness of pad, nonmetal soft sealing layer 1 is laminated with on the top and bottom of waveform metal, make Wave-shaped composite sealing pad.
In Baosteel chemical company pitch coke device, discharge port end cap flange seal at the bottom of the tower of pitch coke coke drum, 470 ℃ of medium operation operating temperatures, working pressure 0.7Mpa, medium is a coal tar pitch oil, easily spontaneous combustion behind the dielectric leakage, sealing surface 1970*1924, flange bolt M36-36 is uniform;
This equipment was once shut down blowing in per two days; the flange temperature is reduced to below 100 ℃, and working state, the coal tar pitch oil temperature is more than 550 ℃ in the coke drum; column bottom temperature is about 470 ℃; because flange bolt, pad material difference, because of temperature variation, bolt pretightening reduces makes its seal failure; simultaneously along with temperature raises; equipment operation is after a period of time, and stress relaxation easily takes place pad, and sealability descends.
Former use metallic cover pad needs heat once firm, and is difficult to the phenomenon of stopping a leak during use, the metallic cover pad only can use once.
Use the waveform metal and nonmetal overlay in combination gasket seal of present embodiment, only need be once evenly fastening when cold conditions during installation, and can repeatedly effectively use to five times.
Embodiment 2
With reference to Fig. 1, the ripple spacing of described waveform metal 2 is 3mm, and the ripple height is 0.8mm.The thickness of described waveform metal 2 is 1.5.The thickness of described pad is 45% of ripple spacing.The material of described waveform metal 2 is an aluminium.The material of described nonmetal soft sealing layer 1 is a graphite.
All the other structures are identical with embodiment 1.
Embodiment 3
With reference to Fig. 1, the ripple spacing of described waveform metal 2 is 4mm, and the ripple height is 1.0mm.The thickness of described waveform metal 2 is 2.0.The thickness of described pad is 50% of ripple spacing.The material of described waveform metal 2 is a steel.The material of described nonmetal soft sealing layer 1 is the varicosity tetrafluoro.
All the other structures are identical with embodiment 1.
Embodiment 4
With reference to Fig. 1, the ripple spacing of described waveform metal 2 is 6mm, and the ripple height is 1.1mm.The thickness of described waveform metal 2 is 2.5.The thickness of described pad is 55% of ripple spacing.The material of described waveform metal 2 is a stainless steel.The material of described nonmetal soft sealing layer 1 is the varicosity tetrafluoro.
All the other structures are identical with embodiment 1.
Embodiment 5
With reference to Fig. 1, the ripple spacing of described waveform metal 2 is 8mm, and the ripple height is 1.2mm.The thickness of described waveform metal 2 is 3.0.The thickness of described pad is 60% of ripple spacing.The material of described waveform metal 2 is a Monel.The material of described nonmetal soft sealing layer 1 is a graphite.
All the other structures are identical with embodiment 1.
Claims (6)
1, a kind of Wave-shaped composite sealing pad comprises sealed support, it is characterized in that: described sealed support is the waveform metal, and the top and bottom of described waveform metal are laminated with nonmetal soft sealing layer.
2, Wave-shaped composite sealing pad as claimed in claim 1 is characterized in that: the ripple spacing of described waveform metal is 1.6～8mm.
3, Wave-shaped composite sealing pad as claimed in claim 1 is characterized in that: the thickness of described waveform metal is 1.0～3.0mm.
4, Wave-shaped composite sealing pad as claimed in claim 1 is characterized in that: the thickness of described pad is 40～60% of ripple spacing.
1., copper 5, as the described Wave-shaped composite sealing pad of one of claim 1-4, it is characterized in that: the material of described waveform metal is one of following:; 2., aluminium; 3., steel; 4., stainless steel; 5., Monel.
1., graphite 6, as the described Wave-shaped composite sealing pad of one of claim 1-4, it is characterized in that: the material of described nonmetal soft sealing layer is one of following:; 2., varicosity tetrafluoro.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100201 CN2883812Y (en) | 2006-01-09 | 2006-01-09 | Wave-shaped composite sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100201 CN2883812Y (en) | 2006-01-09 | 2006-01-09 | Wave-shaped composite sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2883812Y true CN2883812Y (en) | 2007-03-28 |
Family
ID=37956873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620100201 Expired - Lifetime CN2883812Y (en) | 2006-01-09 | 2006-01-09 | Wave-shaped composite sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2883812Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174857A (en) * | 2017-05-03 | 2017-09-19 | 南通华兴石油仪器有限公司 | A kind of Rose Box for slurry stirring device |
| CN116816932A (en) * | 2023-06-07 | 2023-09-29 | 广东粤凯科技装备制造有限公司 | Multi-dimensional reinforced sandwich type composite sealing gasket |
-
2006
- 2006-01-09 CN CN 200620100201 patent/CN2883812Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174857A (en) * | 2017-05-03 | 2017-09-19 | 南通华兴石油仪器有限公司 | A kind of Rose Box for slurry stirring device |
| CN116816932A (en) * | 2023-06-07 | 2023-09-29 | 广东粤凯科技装备制造有限公司 | Multi-dimensional reinforced sandwich type composite sealing gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070328 |
|
| EXPY | Termination of patent right or utility model |