CN202971897U - Self-embraced type leak-proof sealing cushion - Google Patents
Self-embraced type leak-proof sealing cushion Download PDFInfo
- Publication number
- CN202971897U CN202971897U CN2012206620659U CN201220662065U CN202971897U CN 202971897 U CN202971897 U CN 202971897U CN 2012206620659 U CN2012206620659 U CN 2012206620659U CN 201220662065 U CN201220662065 U CN 201220662065U CN 202971897 U CN202971897 U CN 202971897U
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- Prior art keywords
- cushion
- pressure cap
- embraced
- self
- hard pressure
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a self-embraced type leak-proof sealing cushion in the technical field of sealing pieces. The technical scheme is that the self-embraced type leak-proof sealing cushion is composed of a hard pressure cap and a rubber cushion, wherein an inner tapered hole is formed on the hard pressure cap; the rubber cushion is extended with an outer tapered ring along the center hole of a flat cushion; and the outer tapered ring is matched with the inner tapered hole of the hard pressure cap in a splicing manner. According to the self-embraced type leak-proof sealing cushion disclosed by the utility model, the hard pressure cap and the tapered cushion, which are matched on upper and lower tapered surfaces, are adopted, so that the tapered cushion is extruded by the hard pressure cap while being stressed, and the threads of a turnbuckle are tightly embraced through the shrinkage of the tapered cushion, therefore, the sealing effect is achieved, and the sealing effect is better when the stress is bigger and the self-embracing force is bigger; and a problem that the oil is leaked due to the fact that the conventional sealing cushion of the oil charging device is easy to age can be effectively avoided. Moreover, the self-embraced type leak-proof sealing cushion has the advantages of being simple in structure, convenient to use and low in cost.
Description
Technical field
The utility model relates to the Sealing technical field, is specifically related to a kind ofly from embracing a formula leak-proof sealing pad, is specially adapted to the sealing that the drain oil, tank filler sleeve, bleed valve etc. of electric substation's oil-filled equipment are located.
Background technique
Electric substation is through operation all the year round now, and oil-filled equipment is aging because of the oil resistant mat, be full of cracks is serious, and oil seepage phenomena is day by day serious, has had a strong impact on the normal operation of equipment.Electric substation's oil-filled equipment is of a great variety, each seals the mat shape size and differs, and the leakage of oil probability that concora crush oil resistant mat (plain cushion) occurs is the highest, and the mat of replacing slightly has deviation, or be subjected to the impact of temperature, pressure oil leakage phenomenon will occur, bring great difficulty to plant maintenance.The bleed valve of main transformer bushing in special oil-filled equipment, switch bottom fuel outlet valve, each sealing gasket subbase of wall bushing originally all adopt the balance pressure type mat, impact through overageing, temperature, pressure, cause plain cushion and thread interlock poorly sealed, oil oozes out from thread, this plain cushion weakens greatly through overageing elastic force, as tightening in reinforcing with spanner, it is more serious that mat is out of shape leakage of oil on the contrary.
The model utility content
The purpose of this utility model is exactly the defective that exists for prior art, and the formula of certainly the embracing leak-proof sealing pad of a kind of good seal performance, long service life is provided.
Its technological scheme is: be comprised of hard pressure cap and the sub-two-part of rubber cushion, described hard pressure cap is with internal tapered hole, and described rubber cushion is extended with the external conical shape ring along the plain cushion center hole, and the external conical shape ring is pegged graft with the internal tapered hole of hard pressure cap and coordinated.
The tapering of hard pressure cap inner conical is less than the tapering of the sub-external conical shape ring of rubber cushion.
The endoporus of described rubber cushion is the straight tube hole, or with the internal tapered hole of the identical tapering of external conical shape loop section.
Of the present utility model from embracing the formula leak-proof sealing pad due to the hard pressure cap and the taper mat that adopt the up and down cone match, mat is when stressed, hard pressure cap extruding taper mat, make the taper mat shrink the screw thread of firmly embracing thread, reach the effect of sealing, stressed larger larger from the power of embracing, it is better to seal, can effectively solve the problem of the easy aging leakage of oil of oil-filled equipment conventional sealing mat, and have advantages of simple in structure, easy to use, with low cost.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model structural drawing.
Embodiment
With reference to Fig. 1, certainly to embrace the formula leak-proof sealing pad and formed by rubber cushion and 3 liang of parts of hard pressure cap, rubber cushion is comprised of plain cushion 1 and external conical shape ring 2 two-part integral body, and the material employing is high temperature resistant, oil resistant, aging-resistant silicone rubber.Hard pressure cap 3 structural designs are inner conical, and rubber cushion is designed to external conical shape, and for enhanced leaktightness, during making, the aperture is less than bolt aperture 0.2mm.The inner conical tapering is less than the tapering of external conical shape, and like this when bolting on, upper pressing cap extruding mat makes mat that the screw screw thread is firmly embraced, tighter on screw, and it is more dead that mat is embraced, and reaches excellent sealing effect.
On the basis of above-described embodiment, the inner hole structure that changes rubber cushion is straight tube shape, has same using effect.
Claims (3)
1. certainly embrace a formula leak-proof sealing pad for one kind, formed by hard pressure cap and the sub-two-part of rubber cushion, it is characterized in that: described hard pressure cap is with internal tapered hole, and described rubber cushion is extended with the external conical shape ring along the plain cushion center hole, and the external conical shape ring is pegged graft with the internal tapered hole of hard pressure cap and coordinated.
2. according to claim 1 from embracing the formula leak-proof sealing pad, it is characterized in that: the tapering of hard pressure cap inner conical is less than the tapering of the sub-external conical shape ring of rubber cushion.
It is 3. according to claim 1 and 2 that it is characterized in that: the endoporus of described rubber cushion is the straight tube hole from embracing a formula leak-proof sealing pad, or with the internal tapered hole of the identical tapering of external conical shape loop section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206620659U CN202971897U (en) | 2012-12-05 | 2012-12-05 | Self-embraced type leak-proof sealing cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206620659U CN202971897U (en) | 2012-12-05 | 2012-12-05 | Self-embraced type leak-proof sealing cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971897U true CN202971897U (en) | 2013-06-05 |
Family
ID=48512973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206620659U Expired - Fee Related CN202971897U (en) | 2012-12-05 | 2012-12-05 | Self-embraced type leak-proof sealing cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971897U (en) |
-
2012
- 2012-12-05 CN CN2012206620659U patent/CN202971897U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131205 |