Thermostatically controlled hydraulic hose pulse test platform

Abstract

The invention relates to hydraulic technology, in particular to a constant temperature controlled hydraulic hose pulse test bench, which includes an electric control system, a pulse loading system, an oil replenishment system, and a hydraulic hose connection valve block to be tested. The hydraulic hose under test communicates with the high-temperature fuel tank of the oil supply system through the hydraulic control check valve, the hydraulic control check valve opens and closes according to the oil temperature in the tested hose, and the B port of the booster cylinder of the pulse loading system directly connects with the main fuel tank . The oil temperature control adopts the closed-loop control method of the hydraulic control check valve combined with the temperature sensor, which ensures the stability of the oil temperature during the pulse test, and the hydraulic control check valve only increases the oil temperature beyond the test requirements after multiple pulse impacts It is opened from time to time, which reduces the frequency of opening and closing and improves its service life. The test bench has the characteristics of simple structure, low energy consumption, reliable performance and long service life.

Description

technical field [0001] The invention relates to a hydraulic hose test bench, in particular to an energy-saving hydraulic hose pulse pressure test bench capable of temperature control. Background technique [0002] Hydraulic hoses are widely used in hydraulic systems. During the working process of the hydraulic system, hydraulic hoses are often damaged or failed due to hydraulic pulses or heat. Therefore, it is of great significance to test hydraulic hoses and simulate various hydraulic pulses and high temperature phenomena in actual working conditions to ensure the safe operation of hydraulic systems. [0003] According to the requirements of Section 5.6 "Durability (Pulse) Test" in GB / T 7939-2008 "Test Methods for Hydraulic Hose Assemblies", the pressure and test oil temperature of the hose assembly must meet the following requirements when performing the pulse test: 1) Pressure The loop should be as in figure 1 within the shaded area shown and as close as possible to th...

AI Technical Summary

Problems solved by technology

The disadvantage is that this method does not take into account that the continuous impact of the pulse test on the hydraulic oil will cause the temperature of the oil in the hose to be tested to rise, so that the test standard cannot be met.

However, it should be noted that under this method, a large amount of pressure energy loss will be generated for each test impact, and the energy-saving effect is actually not good.

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