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Drum type pressurized multi-ring composite seal ring

A compound sealing ring and sealing ring technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of poor high-pressure sealing performance, single sealing ring performance, poor adaptability, etc., to improve the sealing safety factor and prolong the use. Longevity and improved sealing effect

Active Publication Date: 2016-01-20
刘立起
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects of single performance, poor adaptability and poor high-pressure sealing performance of the current sealing ring, and provide a new sealing technology of high-low pressure matching, high-efficiency pressurization, and multi-ring composite sealing—drum-type supercharged multi-ring composite sealing sealing ring

Method used

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  • Drum type pressurized multi-ring composite seal ring
  • Drum type pressurized multi-ring composite seal ring
  • Drum type pressurized multi-ring composite seal ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This embodiment is used for one-way sealing, and the structure is as follows:

[0063] A drum type pressurized multi-ring composite sealing ring, such as Figure 4 As shown, the seal ring body 1 is included, and the seal ring body 1 is annular, usually in the shape of a circular cylinder, and of course it can also be selected according to the specific needs of the sealing conditions.

[0064] Along the radial direction of the center of the seal ring body 1, the inner and outer ring surfaces of the seal ring body 1 are seal ring surfaces 13; along the axial direction of the seal ring body 1, the upper and lower end surfaces of the seal ring body 1 are seal rings End face 14.

[0065] This embodiment is a one-way seal, that is, only one end of the two end faces 14 of the seal ring body 1 faces the working chamber of the oil cylinder; the seal ring is provided with an integrated Form low-pressure sealing area 11 and high-pressure sealing area 12, low-pressure sealing are...

Embodiment 2

[0081] This embodiment is used for two-way sealing, and the structure is as follows:

[0082] Same as Example 1 except the following structure.

[0083] In order to meet the two-way (such as two-way oil cylinder) pressure and work needs, the second embodiment is provided with a set of through-through low-pressure sealing areas 11 and high-pressure sealing areas 12 on the two sealing end faces 14 of the sealing ring body 1, such as Figure 7 As shown, the arrangement of the low-pressure sealing area 11 and the high-pressure sealing area 12 of each set is as stated in Embodiment 1.

[0084] Take the application of the two-way liquid injection drum type pressurized four-ring compound seal ring on the two-way acting hydraulic cylinder as an example to illustrate, as shown in Figure 8 , Figure 9 As shown in the figure:

[0085] 71—oil cylinder block; 72—retaining ring; 73—piston rod; 74—upper pressure slow filling groove; 75—upper liquid injection hole; 76—sealing boost pressu...

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Abstract

The invention relates to a drum type boosting multi-ring composite seal ring. The inner and outer two cylindrical faces of a seal ring body are seal faces; and one end face (unidirectional seal ring) or two ends faces (bidirectional seal ring) are a liquid-filling structure. The seal ring is characterized by being formed by two seal structures of high-pressure seal and low-pressure seal; the low-pressure seal structure is Y-shaped or in other shapes; the high-pressure seal structure is a hollow drum type structure; 1-N seal ring faces are respectively arranged at the inner and outer cylindrical faces of the seal ring body; the inner cavity of the high-pressure seal ring is a pressurizing cavity, and the inner and outer cylindrical faces are one or plural seal ring faces; the liquid-filling structure has a high-pressure liquid buffering slot; and a support partition plate is arranged between the buffering slot and the pressurizing cavity and is provided with liquid-injecting holes for communicating the buffering slot and the pressurizing cavity. Compared with the prior seal technology, the drum type boosting multi-ring composite seal ring has the advantages of realizing high-pressure low-pressure match sealing, efficient boosting sealing and multi-ring composite sealing.

Description

technical field [0001] The invention relates to a sealing ring, in particular to a drum type pressurized multi-ring composite sealing ring which is sealed by injecting liquid on both sides of the non-sealing surface. Background technique [0002] The structure and sealing form of various sealing rings currently used are single, such as commonly used Y-shaped sealing rings and O-shaped sealing rings, which are suitable for low-pressure working conditions, but the sealing effect is not good for high-pressure conditions; grid rings, drum-shaped sealing rings and Other sealing rings such as Step seal are suitable for high pressure, but the sealing effect for low pressure is not good. There is no composite sealing ring that can take into account both low pressure and high pressure working conditions in the same hydraulic system. [0003] Next, the structure and sealing principle of the sealing ring will be explained through the commonly used Y-shaped sealing ring and the improved...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16
Inventor 刘志昊李晓龙刘志政李恒杨昱琦张子麟李远顺刘立起
Owner 刘立起