Experimental device and experimental method for linear dynamic sealing characteristics of sealing rings

Abstract

The invention discloses an experimental device and an experimental method for linear dynamic sealing characteristics of sealing rings. The experimental device comprises a base, wherein a rodless cylinder is mounted on the base, a shaft is arranged at the top of the rodless cylinder and sleeved with a sleeve assembly, and the bottom of the sleeve assembly is fixedly connected with a slider on the rodless cylinder; three sealing ring mounting parts are arranged in the sleeve assembly along the shaft at intervals, the sealing rings are mounted in the sealing ring mounting parts and can reciprocate with the sleeve assembly along the shaft, an accommodating cavity penetrated by the shaft is formed between every two adjacent sealing ring mounting parts in the sleeve assembly, and a pressure regulating device and a pressure sensor are also mounted on the surface of the sleeve assembly. According to the experimental device for linear dynamic sealing characteristics of the sealing rings, the slider of the rodless cylinder drives the sleeve assembly to reciprocate along the shaft, the working state of the sealing rings during linear reciprocation can be simulated after the sealing rings are mounted at the mounting parts, the sealing rings and the shaft form friction pairs in the process, and the friction characteristics of the sealing rings can be experimented.

Description

technical field [0001] The invention belongs to the field of experimental testing devices, in particular to a linear dynamic sealing characteristic experimental device and an experimental method of a sealing ring in the field. Background technique [0002] The friction characteristics of the sealing ring depend on both the nature of the sealing ring itself and its working condition. Therefore, it is very important to ensure the experimental conditions when studying the friction characteristics of the sealing ring. The sealing ring friction test device must ensure the groove size, sliding speed, pressure, and the medium of the friction pair. However, most of the existing experimental devices (including tribometers and end-face friction devices) cannot meet the above-mentioned requirements for sealing ring friction experiments. [0003] If the experiment is carried out on the actual machine or on the model, it cannot be widely used for in-depth research on the friction chara...

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Problems solved by technology

However, most of the existing experimental devices (including tribometers and end-face friction devices) cannot meet the above-mentioned requirements for the sealing ring friction experiment.

[0003] For example, the experiment is carried out on the actual machine or on the model, and it cannot be widely used for in-depth research on the friction characteristics of the sealing ring under various working conditions due to the large error.

[0004] The linear dynamic seal friction characteristic testing device in the prior art is as figure 1 As shown, this type of device can only measure the dynamic friction characteristics when the sealing ring is under pressure at one end, and cannot measure the dynamic friction characteristics when the sealing ring is under pressure at both ends (same high pressure, same low pressure, one end low pressure and one end high pressure)

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