Cooling Oil Cooler
I. Overview of Coolant Coolers
Cooling oil units are widely used in power systems as oil cooling equipment. The cooling oil units produced by our company are also suitable for metallurgy, chemical industry, mining, light industry, and heavy industry sectors. They are mainly used for circulating cooling in oil systems for equipment lubricants, variable speed system transformers, steam turbine turbines, and coal mill oils.
Currently, all the oil coolers produced follow a single model, which has many drawbacks after years of practice; they are large in size, have poor cooling efficiency, complex sealing, and are difficult to maintain. Our company's research and development team has developed a new type of oil cooler with excellent cooling performance, where the outlet oil temperature is close to water temperature, simple structure, easy operation, and compact size.
Section II: Main Technical Parameters of Cool Oil Units
Basic Parameters (Table 1)

Vertical cold oil cooler structure and dimensions (see Figure and Table 2)

Section 3: Structural Features of the Cold Oil Cooler

The cooler is mainly composed of an inlet cover, housing, tube bundle, outlet cover, seals, and fasteners. The housing features four pipe connections for oil and water inlets and outlets. Additionally, it is equipped with an oil drain, a water drain, and an exhaust port.
1. Utilizing copper tubes as heat exchange elements, offering high thermal conductivity, large heat exchange area per unit length, and high heat transfer capacity.
2. Structurally sound, capable of maintaining stable oiling temperature over a wide temperature range, and offers excellent resistance to temperature fluctuations and vibrations.
3. Structurally reliable, ensuring no cooling water enters the turbine unit.
4. Finned tubes are smooth with no burrs or folds, making them resistant to dust and scale buildup, and have low fluid resistance. Cool oilers are categorized into vertical and horizontal types based on installation methods. Vertical cool oilers feature small required installation area and ease of installation. Horizontal cool oilers have lower pressure drop and strong resistance to water hammer. Therefore, selecting the appropriate vertical or horizontal cool oiler based on specific site conditions, space height, and performance requirements can better meet the needs of generators and other equipment.
5. Installation, Operation, and Maintenance
1. Properly position the cooler, ensuring accurate connection of the inlet and outlet pipes, typically installed in the system's return oil line or in a system below the design pressure. The oil side pressure should be higher than the water side pressure.
2. Flanges for water inlets and outlets, as well as installation foot bolts, should be assembled on-site.
All pipeline flanges and valve seals are tightly sealed with no leaks.
4. Prior to starting the cooler, the piping should be cleaned to prevent debris from blocking the cooling tubes.
5. When starting the cooler, first gradually open the import oil valve and the vent valve (at a right angle) to exhaust the gas inside the shell. Once the gas is expelled, close the vent valve, then open the outlet oil valve. Next, fully open the cooler's outlet water valve, slightly open the top water side vent valve, and close it after the air is exhausted. Adjust the outlet water valve based on the cooler's outlet oil temperature (while opening the cooling water valve, gradually increase the flow rate), to maintain the oil temperature at a normal level.
6. Inadequate air removal from the heat exchanger tubes can result in poor heat exchange performance.
7. When shutting down the cold oil cooler during the severe winter season, it is essential to drain all the cooling water from the cooler to prevent equipment from cracking due to freezing.
8. When the cooler is shut down, close the oil-water inlet valve first, then the oil-water outlet valve. Unscrew the drain plug on the drain and oil outlet, and drain all the water and oil from the cooler.
9. Coolers typically require kerosene (or gasoline) cleaning of the cooling tubes, end caps, and housing every year or so. Reassembly should include a 1.25 times pressure leak test.
Section 4: Cold Oil Cooler Order
1: When selecting a cool oil cooler, inform us of the cooling area.
2: Fuel and water temperatures, as well as fuel intake pressure and resistance drop.
3: Heat exchange cooling tubes are generally made of紫铜, but stainless steel tubes can also be selected upon customer requirement.