CN205190736U - Many times way metal seal gaskets - Google Patents
Many times way metal seal gaskets Download PDFInfo
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- CN205190736U CN205190736U CN201520958983.XU CN201520958983U CN205190736U CN 205190736 U CN205190736 U CN 205190736U CN 201520958983 U CN201520958983 U CN 201520958983U CN 205190736 U CN205190736 U CN 205190736U
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- metallic gasket
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- many times
- metallic
- pressure
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Abstract
Many times way metal seal gaskets, the metallic gasket center has the diameter to be greater than the centre bore of cylinder cylinder liner or coupling internal diameter, and there is a locating hole metallic gasket neighboring, and the outside punching press of centre bore forms more than the twice concentric unsmooth alternate ring type and back seal, and it is circular or oval that the metallic gasket is the rectangle. Screw and nut through the locating hole compresses tightly the metallic gasket, has avoided flat metal or rubber sheet gasketing's defect, has improved sealed effect, and material saving simplifies the assembly, and increase of service life enlarges the suitability of sealed product, reaches energy saving and consumption reduction, cleaner production's purpose simultaneously.
Description
Technical field
The utility model relates to gasket seal, in particular for the Duo Hui road metallic packing of the radiating fin connecting head of high voltage power cylinder, high-pressure pipe connector, transformer.
Background technique
The radiating fin connecting head pad of existing high voltage power cylinder, high-pressure pipe connector, transformer is all adopt flat metal or rubber sheet gasketing, its slab construction when with the assembly of workpiece junction plane, for the degree of finish of workpiece surface and flatness requirement very high; And the control overflow of the force request stressed location parallel with screw rod of each clamping nut is high during assembling.As long as be exactly have other foreign matter to be mingled with in the case workpiece will be caused to be difficult to seal completely, or cause light seepage, cause loss and the environmental pollution of power or raw material.Certain Patent design existing, rubber is adopted to be that base material is designed to two projections of trapezoidal cross-section and a middle Baltimore groove, must match with the corresponding tongue and groove on cooperating face during installation, otherwise pressure is leaked in being formed because of rubber ring distortion, and this type of sealing gasket complex manufacturing technology, machining period is long, and accommodation is narrow, and working life is short.Especially at high temperature and pressure, the weatherability of rubber and plastic article and oil resistance are difficult to meet usage requirement.
Model utility content
The technical problems to be solved in the utility model is, avoid the defect of flat metal or rubber sheet gasketing, a kind of Duo Hui road metallic packing is provided, raising sealing effect, saving material, simplification assemble, the applicability of the sealed product that increases the service life, expands, and reach object that is energy-saving and cost-reducing, cleaner production simultaneously.
Realizing the technological scheme that above-mentioned purpose adopts is: Duo Hui road metallic packing, metallic shim center has diameter to be greater than the center hole of cylinder sleeve or internal diameter of pipe joint, there is positioning hole metallic shim outer periphery, the concentric concavo-convex circular shape that the outside punching press of center hole forms more than twice seals go back to road, and metallic shim is that rectangle is circular or oval.By the compression metallic shim of the threaded spindle cap nut of positioning hole, guarantee from cylinder or pipe coupling flange aperture to the sealing effect of outer edge.
Good effect of the present utility model is, original single plane pad is modified into the two annulus with trapezoidal cross-section or many annulus sealing circuit pad, one is reduce the pressure difference between sealing circuit, and the pressure difference between adjacent circuit is suitable, but overall sealing load has had and is multiplied; Two is reduce the area of contact between sealing gasket and main workpiece, increases, improve sealing effect at the surface contact pressure of equal locking sealed under pressure pad; Three is that interior pressure that the original air of each sealing circuit inside is formed is treated fluid-encapsulated formation from internal leak and stopped, the Micro blazed-grating of first road ring local defines and seals completely under the stop of follow-up ring, and what ensured that workpiece combines is sealed with validity; Four carryings being reduction of locking screw nut, extend the working life of sealing workpiece combination; Five machining requirements being reduction of sealed working face, reduce cost of production; Six are reduction of the technical requirements sealing workpiece assembling, reduce time cost.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation,
Fig. 2 is the utility model generalized section.
In figure: 1 metallic shim, 2 positioning holes, 3 circular shapes seal go back to road, 4 center holes.
Embodiment
Please see Figure 1, Duo Hui road metallic packing, metallic shim 1 center has diameter to be greater than the center hole 4 of cylinder sleeve or pipe joint, and the concavo-convex alternate circular shape of concentric circle trapezoidal cross-section that the outside punching press of center hole 4 forms more than twice seals go back to road 3, and metallic shim 1 four jiaos has positioning hole 2.Compress metallic shim 1 with threaded spindle cap nut in positioning hole 2, guarantee from cylinder or pipe coupling flange aperture to the sealing effect of outer edge.The utility model entirety is stamped to form.
Know-why: when using plane backing plate, suppose that the pressure of fluid to be sealed is P, outer atmospheric pressure is P
0, planar sealing pad pressure-bearing is P
1, then the pressure of seal request is necessary: P
1>=P-P
0;
When using trapezoidal ripple backing plate, suppose that the pressure of fluid to be sealed is P, outer atmospheric pressure is P0, and the first rim bearing pressure of trapezoidal ripple pad is P1, and the second rim bearing pressure of trapezoidal ripple pad is P
2, the N road rim bearing pressure of trapezoidal ripple pad is P
n, then the sealing load sealing formation is:
P
1+P
2+······+P
N≥P-P
0
Can visually see from twice formula above: the effect of gasket seal sealing depends on the inside and outside differential pressure of Seal cage and the tightness of sealing plane; One sealing can only be formed when using flat sealing gasket, once sealing gasket local deformation or pressurized inequality, all can cause gas pressure leak, causing energy loss, the forfeiture of material seepage or power.When using trapezoidal ripple grommet type seal plate of the present invention, the interior pressure that original air of each sealing circuit inside is formed is treated fluid-encapsulated from internal leak formation stop, pressure difference between adjacent circuit is suitable, reduce the pressure carrying of inner seal ring road and outermost surface sealing circuit, and the overall sealing load of Sealing has been had be multiplied, thus formed and seal completely.
Claims (1)
1. Duo Hui road metallic packing, metallic shim (1) center has diameter to be greater than the center hole (4) of cylinder sleeve or internal diameter of pipe joint, there is positioning hole (2) metallic shim outer periphery, it is characterized in that: the outside punching press of center hole forms the concentric concavo-convex alternate circular shape of more than twice and seals go back to road (3), and metallic shim is that rectangle is circular or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958983.XU CN205190736U (en) | 2015-11-27 | 2015-11-27 | Many times way metal seal gaskets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958983.XU CN205190736U (en) | 2015-11-27 | 2015-11-27 | Many times way metal seal gaskets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190736U true CN205190736U (en) | 2016-04-27 |
Family
ID=55783729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520958983.XU Active CN205190736U (en) | 2015-11-27 | 2015-11-27 | Many times way metal seal gaskets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205190736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676478A (en) * | 2017-11-17 | 2018-02-09 | 东台市富康机械有限公司 | Hydraulic pressure handling machinery alternating expression seal |
-
2015
- 2015-11-27 CN CN201520958983.XU patent/CN205190736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676478A (en) * | 2017-11-17 | 2018-02-09 | 东台市富康机械有限公司 | Hydraulic pressure handling machinery alternating expression seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |