Sealing device for changing the full groove ratio of the sealing ring

A sealing device and sealing ring technology, which is applied to fluid pressure actuating devices, piston rings, actuator accumulators, etc., can solve the problems of high leakage rate and poor dynamic performance, reduce the full slot rate and improve dynamic The effect of high performance and full slot rate

Active Publication Date: 2018-04-10
HUATIAN NANJING ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the piston accumulator has been widely used due to the advantages of simple structure and high reliability, but due to the frictional resistance of the sealing ring, it leads to poor dynamic performance and high air leakage rate.

Method used

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  • Sealing device for changing the full groove ratio of the sealing ring
  • Sealing device for changing the full groove ratio of the sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, this embodiment is a sealing device for changing the full groove rate of the sealing ring, which includes a cylinder 1 with an opening at one end and a sealing piston 2 arranged in the cylinder 1;

[0023] The contact surface between the sealing piston 2 and the cylinder body 1 is provided with a sealing groove; in the sealing groove, an X-shaped sealing ring 3, a retaining ring 4 and several springs 5 ​​are sequentially arranged in the axial direction from the sealing end of the cylinder body to the opening end; The original length of the spring 5 is greater than the distance between the side wall of the sealing groove and the retaining ring 4;

[0024] The center of the end face of the sealing piston 2 corresponding to the opening of the cylinder 1 is provided with a blind hole; the blind hole communicates with the sealing groove through a through hole; the outlet of the through hole is arranged at the retaining ring 4 and the between the a...

Embodiment 2

[0029] Such as figure 2 As shown, the sealing device in this embodiment takes the accumulator in the hydraulic system as an example, including a cylinder 1 with one end in communication with the pump outlet of the hydraulic system and the inlet passage of the servo valve, and a sealing piston 2 arranged in the middle of the cylinder;

[0030] One side of the sealing piston 2 is provided with oil connected to the hydraulic system, and the other side is provided with high-pressure gas; the contact surface between the sealing piston 2 and the cylinder body 1 is provided with a sealing groove; From the sealing end to the open end, an X-shaped sealing ring 3, a retaining ring 4 and a plurality of springs 5 ​​are arranged in sequence; The X-shaped sealing ring 3 contacts, and the original length of the spring 5 is greater than the distance between the side wall of the sealing groove and the retaining ring 4;

[0031] The sealing piston 2 is provided with a blind hole in the center...

Embodiment 3

[0036] Based on the above embodiments, the X-shaped sealing ring 3 in this embodiment is a fluorine rubber sealing ring, and the X-shaped sealing ring 3 is an X-shaped rubber bowl and / or a rotating lip-shaped sealing ring;

[0037] The fluorine rubber of this embodiment has outstanding heat resistance and oil resistance, and the rubber bowl and the rotating lip seal ring can significantly improve the service time.

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Abstract

The invention discloses a sealing device for changing the groove filling rate of a sealing ring. The sealing device comprises a cylinder body and a sealing piston arranged in the cylinder body. A sealing groove is formed in the face, in contact with the cylinder body, of the sealing piston. An X-type sealing ring, a check ring and multiple springs are arranged in the sealing groove, wherein the springs are arranged between the side wall of the sealing groove and the check ring. The check ring is in contact with the X-type sealing ring. A blind hole is formed in the center of the end face, corresponding to an opening of the cylinder body, of the sealing piston. The blind hole communicates with the sealing groove through a through hole. A through hole outlet is formed between the check ring and the X-type sealing ring. By the adoption of the sealing device, the airtightness between the piston and the cylinder body is adjusted by changing the groove filling rate.

Description

technical field [0001] The invention relates to a sealing device for changing the full groove ratio of a sealing ring. Background technique [0002] The accumulator is a commonly used energy storage device in the hydraulic servo system. It is mainly used as an auxiliary energy source for the system and can reduce oil pulsation. Among them, the piston accumulator has been widely used due to the advantages of simple structure and high reliability, but due to the influence of the frictional resistance of the sealing ring, the dynamic performance is poor and the air leakage rate is high. When the hydraulic system is not working, high-pressure gas is expected to be stored for a long time, and the compression rate and full groove rate of the sealing ring need to be increased. Reduce frictional resistance. Therefore, it is of great practical significance to design a device that has a high compression rate and full groove rate of the sealing ring when the piston is static, and a d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J9/00F15B15/20F15B1/04F15B1/08F15B15/22
CPCF15B1/04F15B1/08F15B15/1452F15B15/22F15B2201/51
Inventor 陈猛卫卫石海军
Owner HUATIAN NANJING ENG & TECH CORP MCC
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