Summary of Design Experience for Hydraulic Oil Tanks, Coolers, and Heaters

1. Fuel tank
1) The temperature bulb of the temperature measuring element inside the fuel tank should be kept away from the heater and return pipe;
2) When installing the rod type magnetic filter, it should be kept away from the liquid level transmitter;
3) The bottom of the fuel tank should have a certain inclination and cannot be made into a double-layer bottom;
4) The bottom should not come into contact with the ground;

5) The fuel tank should be equipped with a partition, and the height of the partition should be appropriate;
6) The outlet of the hydraulic system return oil pipe should be submerged below the oil level;
7) The fuel tank should be sealed to prevent dust and equipped with an air filter.

2. Heat exchanger
1) The cooler should not be placed in front of the return oil filter;
2) The heat dissipation area of the cooler should be sufficient;
3) The flow capacity of the cooler should not be too low;
4) Heaters should not be installed in pipelines;
5) The installation position of the heater in the fuel tank should not be too high;
6) The installation surface of the heater should not be sealed with rubber material;
7) When the cooler is working, cooling water should be introduced first, with a pressure lower than that of the working medium, and then hot working medium should be introduced to avoid thermal stress;
8) After introducing water and working medium, pay attention to checking for leaks in all parts, abnormal changes in flow rate and pressure, and eliminate gas from the cooler;
9) Generally, the cooler should be inspected every 6 months and maintained annually to clean and replace damaged parts;

10) Pay attention to checking the oil temperature difference at the inlet and outlet of the cooler and the water temperature difference at the inlet and outlet to determine the cooling capacity of the cooler;
11) Pay attention to checking the cooler shell for abnormal expansion, cracks, and loose installation screws;
12) During winter use, attention should be paid to preventing water from freezing, otherwise it may cause the rupture of the tube bundle.