CN2290734Y - Ultrahigh pressure auto-compensating active/static combination sealing device - Google Patents
Ultrahigh pressure auto-compensating active/static combination sealing device Download PDFInfo
- Publication number
- CN2290734Y CN2290734Y CN 97236342 CN97236342U CN2290734Y CN 2290734 Y CN2290734 Y CN 2290734Y CN 97236342 CN97236342 CN 97236342 CN 97236342 U CN97236342 U CN 97236342U CN 2290734 Y CN2290734 Y CN 2290734Y
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- CN
- China
- Prior art keywords
- ring
- seal ring
- high pressure
- seal
- conical surface
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a novel ultrahigh pressure auto-compensating active/static combination sealing device which is composed of a cushion ring (1), a Y-shaped sealing ring (2), a high pressure nylon ring (3), a sealing ring (4) and a backing ring (5). The utility model is used in hydraulic pressure machines, particularly in hydraulic superchargers. An active and static sealing faces are formed respectively by the sealing ring (4) and a high pressure piston rod (11) and by the sealing ring (4) and a high pressure cylinder body (9). When the caliber of the sealing ring (4) is abraded, the periphery of the sealing ring (4) is deformed further to play an automatic compensation role. The utility model has the advantages of simple structure, easy fabrication, easy replacement, long service life, etc.
Description
The utility model is a hydraulic machinery, and the pressurized machine that particularly surges is as the important device of sealing.
In the pressurized machine that surges, the pressure of liquid is very high after the supercharging, can reach 400MPa, even higher.The domestic Sealing that adopts usually at present all can not bear high like this pressure, and they are under ultra-high pressure condition, poor sealing performance, working life is short, also can cause the damage of the part (as high pressure cylinder body, high-pressure piston rod) of pressurized machine during use, and reduced the working life of pressurized machine.
The purpose of this utility model is the problem that exists at aspects such as domestic existing sealing device structure patterns, designs a kind of simple in structurely, is easy to make and change reliable operation, the new type sealing device of long service life.As shown in drawings, the utility model is made up of packing ring 1, y-type seal ring 2, high pressure nylon ring 3, seal ring 4, gasket ring 5.Correlated parts has: plunger guide plug screw 6, plug 7, end cap 8, high pressure cylinder body 9, high pressure sleeve 10, high-pressure piston rod 11.High pressure nylon ring 3 is made up of two conical surfaces and a plane, and seal ring 4 is made up of four conical surfaces and inside and outside cylndrical surface and plane, and gasket ring 5 is made up of conical surface, inner cylindrical surface and two planes.The circular planes of the circular planes of y-type seal ring 2 and high pressure nylon ring 3 fits tightly, the conical surface of high pressure nylon ring 3 is close on one group of conical surface of seal ring 4, the inner cylindrical surface of the external cylindrical surface of seal ring 4 and high pressure cylinder body 9 is fitted, the external cylindrical surface of the inner cylindrical surface of seal ring 4 and high-pressure piston rod 11 is fitted, and another group conical surface of seal ring 4 is fitted with the outer conical surface of gasket ring 5 and the internal conical surface of high pressure cylinder body 9 respectively.Its working principle is: when end cap 8 screws, drive plug 7 and high pressure cylinder body 9 displacement to the right, because the effect of gasket ring 5 and plunger guide plug screw 6 forces the conical surface of high pressure cylinder body 9 right-hand members and the conical surface of seal ring 4 to kill and fit tightly, and forms high pressure sealing static seal face thus.This sealing surface has been blocked the seepage of highly pressurised liquid between seal ring 4 and high pressure cylinder body 9 effectively, reaches the purpose of sealing.This structure has also played the 4 issuable axially movable effects of restriction seal ring simultaneously.When pressurized machine is worked, the pressure of highly pressurised liquid acts on the y-type seal ring 2, and force y-type seal ring 2 displacement to the right, active force is pressed in the left end of high pressure nylon ring 3, high pressure nylon ring 3 is subjected to active force, two conical surfaces by its right-hand member, be delivered on two conical surfaces of seal ring 4 left ends, active force forces seal ring 4 to produce distortion simultaneously on internal diameter and external diameter, fit tightly with high-pressure piston rod 11 and high pressure cylinder body 9, form motive sealing face between the external cylindrical surface of the inner cylindrical surface of seal ring 4 and high-pressure piston rod 11, reach the purpose of sealing.During pressurized machine work, high-pressure piston rod 11 is reciprocating, slip between seal ring 4 and the high-pressure piston rod 11 will certainly produce the wearing and tearing between the sealing surface, because the hardness of the hardness higher pressure piston rod 11 of seal ring 4 is low, comparatively speaking than being easier to wearing and tearing, when seal ring 4 wearing and tearing, because the effect of s forces the shirt rim portion of seal ring 4 further to be out of shape, the effect of automatic compensation is played in the wearing and tearing of moving in the compensation and causing.The effect of packing ring 1 is to have limited the displacement that y-type seal ring 2 produces vertically left, guarantees that seal arrangement is in the working zone.
The utility model compared with prior art has the following advantages:
(1) changed traditional sealing device structure, novel, reasonable in design.
(2) adopt the method for automatic compensation and dynamic and static sealing combination, improved sealability, prolonged the working life of seal arrangement.
(3) simple in structure, quantity of used parts is few, be easy to make, be convenient to change, high life.
Claims (2)
1, the dynamic and static combination seal device of a kind of novel ultrahigh pressure auto-compensating is made up of packing ring (1), y-type seal ring (2), high pressure nylon ring (3), seal ring (4), gasket ring (5), it is characterized in that:
A, high pressure nylon ring (3) are made up of two conical surfaces and a plane, and seal ring (4) is made up of four conical surfaces and inside and outside cylndrical surface and plane, and gasket ring (5) is by conical surface, and inner cylindrical surface and two planes are formed.
The circular planes of the circular planes of b, y-type seal ring (2) and high pressure nylon ring (3) fits tightly, the conical surface of high pressure nylon ring (3) is close on one group of conical surface of seal ring (4), and force the external cylindrical surface of seal ring (4) and the inner cylindrical surface of high pressure cylinder body (9) to be fitted, the external cylindrical surface of the inner cylindrical surface of seal ring (4) and high-pressure piston rod (11) is fitted, and forms motive sealing face.Another group conical surface of seal ring (4) forms the static seal face with the outer conical surface of gasket ring (5) and the internal conical surface applying of high pressure cylinder body (9) respectively.
2, seal arrangement according to claim 1 is characterized in that: when the internal diameter of seal ring (4) weares and teares, because the effect of superhigh pressure liquid pressure forces the shirt rim portion of seal ring (4) further to be out of shape, play the effect of automatic compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236342 CN2290734Y (en) | 1997-06-18 | 1997-06-18 | Ultrahigh pressure auto-compensating active/static combination sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236342 CN2290734Y (en) | 1997-06-18 | 1997-06-18 | Ultrahigh pressure auto-compensating active/static combination sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2290734Y true CN2290734Y (en) | 1998-09-09 |
Family
ID=33947234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97236342 Expired - Lifetime CN2290734Y (en) | 1997-06-18 | 1997-06-18 | Ultrahigh pressure auto-compensating active/static combination sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2290734Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345611A (en) * | 2023-10-25 | 2024-01-05 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
-
1997
- 1997-06-18 CN CN 97236342 patent/CN2290734Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345611A (en) * | 2023-10-25 | 2024-01-05 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
| CN117345611B (en) * | 2023-10-25 | 2024-02-20 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
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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 | ||
| CX01 | Expiry of patent term | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiang Zhenhan Document name: Notification of Termination of Patent Right |