Dynamic sealing performance testing method and device for plunger cylinder sleeve

A test method and dynamic sealing technology, which are applied in the direction of using liquid/vacuum for liquid tightness measurement, and by measuring the acceleration and deceleration rate of fluid, etc. Leakage, reduced production efficiency and other problems, to achieve the effect of high accuracy, accelerated leakage speed, and easy production and processing

Inactive Publication Date: 2014-12-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Once the sealing performance between the plunger and the cylinder liner in the equipment decreases and the liquid in the cylinder leaks, it will cause adverse consequences such as reduced production efficiency and environmental pollution, and will eventually lead to the scrapping of the equipment
[0004] The seal between the plunger and the cylinder liner is a dynamic seal, and there is no specific relevant standard for the test of the dynamic seal, and there is no specific device for testing the dynamic sealing performance to evaluate the dynamic sealing performance of different plunger cylinder liners

Method used

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  • Dynamic sealing performance testing method and device for plunger cylinder sleeve
  • Dynamic sealing performance testing method and device for plunger cylinder sleeve
  • Dynamic sealing performance testing method and device for plunger cylinder sleeve

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Embodiment Construction

[0025] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, a method for testing the dynamic sealing performance of a plunger cylinder liner is carried out according to the following steps:

[0027] The first step: connect the plunger 6 to the connecting rod 5 of the drive unit and fasten it and place it in the cylinder liner 7, and fix the cylinder liner 7 together with the plunger 6 on the machine base 4;

[0028] Step 2: There are two upper and lower positioning holes on the connecting rod 5, turn the crank linkage mechanism to the bottom dead center, insert the positioning pin 3 into the positioning hole at the bottom dead center, inject the leakage liquid 11 into the cylinder liner 7, and ensure that the plunger 6 When moving to the top dead center, the upper liquid level of the leaked liquid 11 is between the lowest scale line and the highest scale l...

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Abstract

The invention relates to a dynamic sealing performance testing method and device for a plunger cylinder sleeve. The method includes: the liquid leakage in the cylinder sleeve is recorded when a plunger is located at the same position before and after the reciprocating movement of the plunger in the cylinder sleeve to detect the dynamic sealing performance of the plunger cylinder sleeve. The device comprises a drive unit, a base (4), the plunger (6), the cylinder sleeve (7), a cylinder sleeve cover (8), a metering tube (9) and leakage liquid (11). The device further comprises a loading unit for testing the dynamic sealing performance of the plunger cylinder sleeve under different pressures. The device can be further provided with an air pressure sensor (13), a friction force sensor (15), a rotation speed sensor (16) and a data collecting control box (14), so that influence of different parameters on the dynamic sealing performance of the plunger cylinder sleeve can be researched. The method and the device have the advantages that simple principle and structure are achieved, high repeatability is achieved, and the dynamic sealing performance of reciprocating movement parts like the plunger cylinder sleeve can be measured accurately.

Description

technical field [0001] The invention relates to a method for testing dynamic sealing performance, in particular to a method for testing the dynamic sealing performance of a plunger cylinder liner, and a measuring device required for using the method. This test method is used to measure the dynamic sealing performance of reciprocating parts such as plunger and cylinder liner, and compare the influence of different types of plungers on the dynamic sealing performance. The testing device of the present invention can be used to compare and study the effects of different moving speeds, loading pressures, friction coefficients and other parameters on the dynamic sealing performance of the plunger cylinder sleeve. Background technique [0002] At present, the mechanical equipment that relies on the reciprocating motion of the plunger in the cylinder liner to realize the working function is widely used in industrial production and daily life. For example, various hydraulic cylinder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 丛茜汝绍锋乔静波
Owner JILIN UNIV
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