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Dynamic compensation type sealing ring

A technology of dynamic compensation and sealing rings, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of rapid wear and failure of sealing rings, poor sealing effect, and failure to achieve sealing, so as to increase service life and reduce The effect of changing the number of times and reducing the workload

Pending Publication Date: 2019-06-14
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for dynamic hydraulic seals under high pressure, all current sealing methods and sealing rings have encountered two major technical problems: First, the working life is short, and the sealing ring wears out quickly during frequent dynamic work, and must be replaced frequently , the work efficiency is very low; the second is that the sealing effect gradually deteriorates with the wear of the sealing ring, and even cannot achieve the sealing effect

Method used

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  • Dynamic compensation type sealing ring
  • Dynamic compensation type sealing ring
  • Dynamic compensation type sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Please refer to figure 1 , figure 2 and image 3 As shown, the dynamic compensation type sealing ring of this embodiment is a horizontal dynamic compensation type one-way sealing ring, which includes two parts: a hard shell 1 and a rubber airbag 2, and the rubber airbag 2 is provided with an inflation hole 201 for inflation. , so that the interior of the rubber airbag 2 is filled with high-pressure gas to achieve the purpose of automatically compensating for dynamic sealing; the hard shell 1 is provided with an inflation channel 101 . The rubber airbag 2 is placed inside the hard casing 1 when it is not inflated, and forms a sealing ring with precise dimensions through the cooperation of the inflation hole 201 and the inflation channel 101 . The working surface 202 of the rubber airbag 2 is exposed to the hard shell 1 to achieve the purpose of sealing. The rubber airbag 2 has an asymmetric structure, and the thickness of the rubber layer on the working surface 202 o...

Embodiment 2

[0039] Please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , the dynamic compensation type sealing ring of this embodiment is a dynamic compensation type bidirectional sealing ring in the horizontal direction, which includes two parts: a hard shell 1 and a rubber air bag 2, the hard shell 1 is a two-way hard shell, and the two-way hard The housing has two cavities for accommodating rubber airbags 2. The number of rubber airbags 2 is two. The two rubber airbags 2 are arranged side by side along the horizontal direction. The two rubber airbags 2 are respectively an inner rubber airbag 204 and an outer rubber airbag 205; Both sides are sealed at the same time, and the sealing effect and process are consistent with that of Example 1.

Embodiment 3

[0041] refer to Figure 10 , Figure 11 and Figure 12 , the dynamic compensation type sealing ring of this embodiment is a dynamic compensation type vertical sealing ring, which includes two parts: a hard shell 1 and a rubber airbag 2, the hard shell 1 is a two-way hard shell, and the two-way hard shell There are two cavities for accommodating rubber airbags 2, the number of rubber airbags 2 is two, and the two rubber airbags 2 are arranged side by side along the vertical direction. The sealing ring is consistent.

[0042] refer to Figure 13 and Figure 14 , The rubber airbag 2 has an inflation hole 201, which is filled with high-pressure gas during work, and the high-pressure gas fills the entire interior of the rubber airbag 2, so that the working surface 202 expands outwards, increasing the sealing contact surface. During the working process, the working surface 202 is constantly worn, and the amount of wear is constantly increasing, and the sealing effect will becom...

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Abstract

The invention discloses a dynamic compensation type sealing ring, and belongs to the technical field of sealing. The sealing ring comprises a hard shell and a rubber air bag, wherein the rubber air bag is arranged inside the hard shell, the rubber air bag is of an asymmetric structure, the thickness of the rubber layer of the working surface of the rubber air bag is 1.5-3 times the thickness of the rubber layer of the non-working surface, the working surface of the rubber air bag is exposed out of the hard shell and is always in close contact with a sealing piece, an air inflation hole is formed in the rubber air bag, an air inlet valve is arranged at the air inlet end of the air inflation hole, an air inflation channel is formed in the hard shell, and the air inflation channel is tightlymatched with the air inflation hole. Compared with a traditional sealing ring, the sealing ring can realize automatic compensation, the service life of the sealing ring is prolonged, the replacement frequency of the sealing ring is reduced, the workload is reduced, the cost is reduced, and the working efficiency is increased. The sealing effect is continuous, the sealing performance of the sealingring is basically kept unchanged along with the increase of the use time, the working precision is improved, and the energy consumption is reduced

Description

technical field [0001] The invention relates to the technical field of sealing, in particular to a dynamic compensating sealing ring. Background technique [0002] With the continuous maturity and development of hydraulic transmission, systems, machinery and components, more and more tools use hydraulic pressure as the energy source, and there are more and more types and forms of hydraulic seals, but the ultimate purpose is to In order to have better adaptability to the working environment, it can better play the role of sealing and not leaking in dynamic and static environments. [0003] At present, the forms of dynamic seals mainly include packing seals, mechanical seals, dry gas seals, labyrinth seals, oil seals, dynamic seals and screw seals. Among them, packing seals are divided into soft packing seals, hard packing seals and formed packing seals, which are mainly filled in the sealing cavity by strips, and the pressing force is generated by the gland to compress the p...

Claims

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Application Information

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IPC IPC(8): F16J15/16F16J15/32F16J15/34
Inventor 高科王金龙谢晓波
Owner JILIN UNIV