CN102563070A - Dual-seal gasket - Google Patents
Dual-seal gasket Download PDFInfo
- Publication number
- CN102563070A CN102563070A CN2012100383194A CN201210038319A CN102563070A CN 102563070 A CN102563070 A CN 102563070A CN 2012100383194 A CN2012100383194 A CN 2012100383194A CN 201210038319 A CN201210038319 A CN 201210038319A CN 102563070 A CN102563070 A CN 102563070A
- Authority
- CN
- China
- Prior art keywords
- seal
- metal shell
- sealing
- medium
- double seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The invention discloses a dual-seal gasket, which comprises a seal in the shape of a seal gasket. A metal shell hermetically wraps the outside of the seal to form primary seal, and a medium sealing layer is arranged on the outer surface of the metal shell to form secondary seal. The primary seal and the secondary seal form dual seals, firstly, the metal and/or nonmetal seal hermetically wrapped by the metal shell is not easy to leak so that the primary seal guaranteeing sealability is formed, secondly, by the aid of the secondary seal formed by the medium sealing layer arranged on the surface of the metal shell, the seal is isolated from a working environment, the possibility of oxidation of the seal is decreased, the service life of the seal is prolonged, and the medium sealing layer can fill capillary pores of an upper element and a lower element, so that sealing effects are further enhanced.
Description
Technical field
The present invention relates to the seal element technical field, be specially a kind of double seal pad.
Background technique
Existing sealing gasket roughly is divided into: metal gasket, non-metallic pad and metal and nonmetal composite pad.Wherein, metal gasket comprises: aluminium pad, red copper pad etc., the rebound elasticity of these metal gaskets is bad, occur easily leaking, on the diameter 500mm be difficult for processing; Non-metallic pad comprises: asbestos rubber pad, rubber pad and phenyl tetrafluoride pad etc., tolerable temperature was not high when these non-metallic pads used, on the diameter 1500mm be difficult for processing; Metal and nonmetal composite pad comprise: graphite composite pad, metal wound gasket, ladle pad etc.The graphite composite pad is easy to occur to reveal, on the diameter 1000mm processing need to splice, can't be high pressure resistant; The metal wound gasket, on the diameter 500mm circle that in production, transportation, installation, storage and running, be very easy to loose, and then cause in use occurring the phenomenon of run, drip, leak; The ladle pad, rebound elasticity is very poor, leaks easily, and the pretightening force of pad is very big, has increased installation difficulty, and then has increased working strength of workers.The common issue with that existing packing ring occurs is, sealing is not by force and be mostly disposable use.
Summary of the invention
In view of this, the present invention provides a kind of double seal pad, through for required seal element two-layer sealing being provided, effectively strengthens the sealability of sealing gasket.
For solving above technical problem, technological scheme of the present invention is, a kind of double seal pad comprises the sealer with sealing gasket shape, and the outside seal of sealing thing is enclosed with metal shell, in order to form primary seal; The outer surface of said metal shell is provided with the medium-tight layer, in order to form time sealing.
The last sealing surface and the lower sealing surface of said metal shell are provided with the medium-tight layer.
Said sealer can be metal and/or nonmetal.
On the said metal shell seam is arranged, seam is positioned on the inner side surface or outer side surface of metal shell.
Said seam is positioned on the median plane of metal shell thickness.
Said metal shell is through welding joint sealing.
Said medium-tight layer is resistant to elevated temperatures sealing layer.
Said medium-tight layer is corrosion resistant sealing layer.
Compared with prior art, the present invention forms double seal by primary seal and time sealing, at first, by tight coated metal of metal shell and/or nonmetal sealer, makes that sealer is difficult for revealing, and has formed to have the primary seal that ensures sealing; Secondly; The medium-tight layer that is provided with by the metal shell surface seals for formed time; Sealer and working environment is isolated, reduced the oxidized possibility of sealer, the working life of having improved sealer; The medium-tight layer can further strengthen sealing effect with filling up the pore of element self up and down simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional view on Fig. 1 central symmetry axes;
Fig. 3 is the partial enlarged drawing at A place among Fig. 2.
Among the figure: 1, sealer, 2, metal shell, 3, inner side surface, 4, outer side surface, 5, go up sealing surface, 6, lower sealing surface, 7, the medium-tight layer, 8, soldering point, 9, seam.
Embodiment
Core thinking of the present invention is to form primary seal at sealer outer wrap layer of metal shell, and the outer surface of metal shell adheres to the medium-tight layer and forms time sealing, and primary seal constitutes double seal with time sealing, and the sealability of sealing gasket is significantly improved.
Definition: among the present invention, last sealing surface and lower sealing surface be meant, the metal shell of environmental sealing thing in use, about between the element (the for example element of flange or similar flange) play two parallel sealing faces up and down of seal action.Inner side surface and outer side surface are meant that two sealing surfaces are crossing in the metal shell with up and down, constitute two sides of metal shell thickness.The median plane of metal shell thickness is meant, is positioned on the center line of metal shell thickness, and the face parallel with lower sealing surface with last sealing surface.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1 and Fig. 2, the present invention is a kind of double seal pad, comprises the sealer 1 with sealing gasket shape, is Gask-O-Seal among the figure, and sealer 1 can be metal and/or nonmetal.According to the shape of sealing gasket outside tight parcel layer of metal shell 2 at sealer 1, this metal shell 2 and the sealer 1 common primary seal that forms.Because metal shell 2 is to be wrapped on the sealer 1, so will inevitably produce seam 9, this seam 9 makes sealer 1 can not reveal from seam 9 through welded closure.Smooth smooth for the last sealing surface that guarantees metal shell 25 and lower sealing surface 6; Can not influence the whole sealability of sealing gasket because of the seam 9 of metal shell 2; So seam 9 should be positioned on the inner side surface 3 or outer side surface 4 of metal shell 2; And preferably be positioned on the median plane of metal shell thickness, can find out that from Fig. 2 sectional view the soldering point 8 of seam 9 is positioned at the neutral position of metal shell 2 inner side surfaces 3, promptly is positioned at the neutral position of metal shell thickness.From another point of view, be positioned at the seam 9 on the metal shell side, the process welded closure can increase the intensity of the anti-extruding of sealing gasket, makes sealing gasket can bear bigger pressure, prolongs the working life of sealing gasket.Can adopt spot welding machine, argon arc welding machine, plasma welding machine, laser beam welding machine etc. during welding, wherein best selection scheme is to adopt plasma and laser beam welding machine butt joint 9 to weld.
Outer surface at metal shell 2; Just inner side surface 3, outer side surface 4, last sealing surface 5 and lower sealing surface 6 are provided with medium-tight layer 7; Medium-tight layer 7 also can only be arranged on sealing surface 5 and the lower sealing surface 6, and this medium-tight layer 7 forms time sealing of sealing gaskets.Inferior sealing makes sealer 1 avoid more up hill and dale contacting with the direct of working environment, has improved the oxidation resistance of sealer 1.Simultaneously, inferior sealing can be filled up the pore of element itself up and down, and sealing effect is further strengthened.It also can be corrosion resistant sealing layer that medium-tight layer 7 can be selected resistant to elevated temperatures sealing layer for use, and different medium-tight materials can decide according to the residing different operating environment of pad.Medium-tight layer 7 can adopt the mode of adhesion to be arranged on the metal shell 2.
Account for major component owing to metal among the present invention, so can bear the sealing under the different pressures.Again because metal shell 2 is provided with medium-tight layer 7, so played the effect of double seal.The present invention at first crams the pore of element self up and down by inferior sealing in the course of the work, is played the effect of integral sealing again by primary seal.Primary seal and time double seal of sealing formation, significant sealing affection.
Because metal shell is arranged with the wrapping up of sealer 1 sealing, thereby can to reach diameter be 5000mm with the interior sealing gasket circle that in production, transportation, installation, storage, running, do not loose, and can be repeatedly used.Simultaneously,, make pretightening force of the present invention, alleviated working strength of workers less than the pretightening force that has metallic gasket now because metal shell 2 is provided with resistant to elevated temperatures sealing layer or corrosion resistant sealing layer.The present invention can not reveal through the hydrostatic test, possesses resilience preferably simultaneously, has solved the problems such as run, drip, leak that existing sealing gasket occurs easily.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be regarded as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, do not breaking away from the spirit and scope of the present invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (8)
1. a double seal pad is characterized in that, comprises the sealer (1) with sealing gasket shape, and the outside seal of sealing thing (1) is enclosed with metal shell (2), in order to form primary seal; The outer surface of said metal shell (2) is provided with medium-tight layer (7), in order to form time sealing.
2. double seal pad as claimed in claim 1 is characterized in that, the last sealing surface (5) and the lower sealing surface (6) of said metal shell (2) are provided with medium-tight layer (7).
3. double seal pad as claimed in claim 1 is characterized in that, said sealer (1) can be metal and/or nonmetal.
4. double seal pad as claimed in claim 1 is characterized in that, seam (9) is arranged on the said metal shell (2), and seam (9) is positioned on the inner side surface (3) or outer side surface (4) of metal shell (2).
5. double seal pad as claimed in claim 4 is characterized in that, said seam (9) is positioned on the median plane of metal shell thickness.
6. double seal pad as claimed in claim 4 is characterized in that, said metal shell (2) seals seam (9) through welding.
7. like any described double seal pad among the claim 1-6, it is characterized in that said medium-tight layer (7) is resistant to elevated temperatures sealing layer.
8. like any described double seal pad among the claim 1-6, it is characterized in that said medium-tight layer (7) is corrosion resistant sealing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100383194A CN102563070A (en) | 2012-02-20 | 2012-02-20 | Dual-seal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100383194A CN102563070A (en) | 2012-02-20 | 2012-02-20 | Dual-seal gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102563070A true CN102563070A (en) | 2012-07-11 |
Family
ID=46409290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100383194A Pending CN102563070A (en) | 2012-02-20 | 2012-02-20 | Dual-seal gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102563070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279877A (en) * | 2021-05-28 | 2021-08-20 | 一汽解放汽车有限公司 | Seal gasket and engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219291A (en) * | 1995-02-10 | 1996-08-27 | Nichias Corp | Metal covered gasket |
| JPH11221871A (en) * | 1998-02-05 | 1999-08-17 | Sekisui Chem Co Ltd | Moistureproof seal material |
| CN1659393A (en) * | 2002-06-13 | 2005-08-24 | 原子能委员会 | Flexible graphite sealing joint with metal jacket for high temperature |
| CN1828097A (en) * | 2006-04-06 | 2006-09-06 | 马志刚 | Metal tube and ring rolled seal gasket and manufacturing method thereof |
| CN1834502A (en) * | 2006-04-06 | 2006-09-20 | 马志刚 | Metal tube circular moulded sealing washer and its mfg. method |
| CN101050815A (en) * | 2007-05-11 | 2007-10-10 | 马志刚 | Laminated closed seal spacer and its producing method |
-
2012
- 2012-02-20 CN CN2012100383194A patent/CN102563070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219291A (en) * | 1995-02-10 | 1996-08-27 | Nichias Corp | Metal covered gasket |
| JPH11221871A (en) * | 1998-02-05 | 1999-08-17 | Sekisui Chem Co Ltd | Moistureproof seal material |
| CN1659393A (en) * | 2002-06-13 | 2005-08-24 | 原子能委员会 | Flexible graphite sealing joint with metal jacket for high temperature |
| CN1828097A (en) * | 2006-04-06 | 2006-09-06 | 马志刚 | Metal tube and ring rolled seal gasket and manufacturing method thereof |
| CN1834502A (en) * | 2006-04-06 | 2006-09-20 | 马志刚 | Metal tube circular moulded sealing washer and its mfg. method |
| CN101050815A (en) * | 2007-05-11 | 2007-10-10 | 马志刚 | Laminated closed seal spacer and its producing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279877A (en) * | 2021-05-28 | 2021-08-20 | 一汽解放汽车有限公司 | Seal gasket and engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204677934U (en) | A kind of novel alloy flange | |
| CN102563070A (en) | Dual-seal gasket | |
| CN103591373A (en) | Welding structure of metal corrugated pipe and assembly of valve | |
| CN209041794U (en) | Hermetically sealed heat-insulated welding pressure composite steel tube | |
| CN207421629U (en) | A kind of flange pressurized leak stoppage frock | |
| CN201530500U (en) | Steel drum | |
| CN204164528U (en) | A kind of welding type pipe fitting joint applying single lip sealing ring | |
| CN105772904B (en) | A kind of minor diameter multiple tube butt welding method | |
| CN203628056U (en) | Welding structure of metal bellows assembly for valve | |
| CN203627833U (en) | Welding structure of metal bellows assembly for valve | |
| CN201025303Y (en) | Self-enhancing flexible sealing cushion | |
| CN102861998B (en) | Sealing structure for titanium steel or zirconium titanium steel composite board device lining | |
| CN209309512U (en) | A kind of hydraulic tube flange arrangement | |
| CN103727320A (en) | Metal bellows assembly used for valves, and hybrid welding structure | |
| CN202763303U (en) | Lining sealing structure of titanium steel or zirconium titanium steel composite plate equipment | |
| CN215370946U (en) | Self-sealing pad | |
| CN206904415U (en) | A kind of flange | |
| CN105202285B (en) | A kind of anticorrosive bimetallic transition pipe joint of antiseep and its manufacture method | |
| CN104896812B (en) | A kind of capillary processing method | |
| CN207486041U (en) | A kind of weldering lip | |
| CN201902682U (en) | Stop valve of corrugated pipe | |
| CN204879110U (en) | Heavy -calibre stainless steel steel pipe fitting | |
| CN109297630A (en) | A kind of vacuum pouring pipe closing device | |
| CN206439510U (en) | A kind of composite bimetal pipe | |
| CN202983663U (en) | Multilayer coating structure of reaction tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |