A method and device for testing the dynamic sealing performance of a plunger cylinder liner
A test method and dynamic sealing technology, which is applied in the direction of liquid tightness measurement by using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc., can solve the problem of the lack of dynamic sealing performance of plunger cylinder liner dynamic sealing performance and the reduction of production efficiency , cylinder liquid leakage and other problems, to achieve high precision, easy production and processing, speed up the effect of leakage
Inactive Publication Date: 2016-08-17
JILIN UNIV
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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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Embodiment Construction
[0025] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.
[0026] like 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 line...
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The invention relates to a method and a device for testing the dynamic sealing performance of a plunger cylinder sleeve. The test method of the present invention detects the dynamic sealing performance of the plunger cylinder liner by recording the leakage of liquid in the cylinder liner before and after the plunger reciprocates in the cylinder liner and when the plunger is in the same position. The test device of the present invention is composed of a drive unit, a machine base (4), a plunger (6), a cylinder liner (7), a cylinder liner cover (8), a metering tube (9) and a leaking liquid (11). The device also includes a loading unit to test the dynamic sealing performance of the plunger cylinder liner under different air pressures. In addition, the device can also be equipped with an air pressure sensor (13), a friction sensor (15), a rotational speed sensor (16) and a data acquisition control box (14) to study the influence of different parameters on the dynamic sealing performance of the plunger cylinder sleeve. The method and device proposed by the invention have simple principle and structure, high repeatability, and can accurately measure the dynamic sealing performance of reciprocating parts such as plungers and cylinder sleeves.
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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IPC IPC(8): G01M3/26
Inventor 丛茜汝绍锋乔静波
Owner JILIN UNIV
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