The structural principle of the oil cooler, what is the working principle of the oil cooler

The oil temperature of the engine rises relatively quickly, and there is a time difference between oil heat transfer to the engine shell, in this time difference, the oil cooler has already worked, at this time you touch the engine shell with your hand will feel very warm, you will feel good and effective, and wait until the engine runs for a long time, the speed also comes up, and the oil cooler has also reached the best working state, at this time the temperature of the engine shell has risen to a relatively high level, quickly touch the engine shell, you will find that it is very hot but not the kind of touch can not be touched, At the same time, the temperature of the oil cooler is also very high, which shows that the thermal process has been balanced, and the air cooling and thermal conduction process of the motorcycle's driving speed have been balanced, and the temperature will not be raised

1. The temperature of the oil.

2. The temperature of the engine casing.

The former is higher than the latter, without an oil cooler, without the installation of oil cooling, in the same process as above, you will find that the temperature of the engine rises very quickly, and the engine shell is almost impossible to touch in a short time, after a long time of driving, you dare not touch the temperature of the engine shell with your hands, even if it is a short period of contact Usually the judgment method we use is to sprinkle some water on the engine shell, and hear a squeak, indicating that the temperature of the engine shell has exceeded 120 degrees.

The utility model relates to a cooling oil refrigeration device, mainly comprises an oil tank, an evaporator is installed in the oil tank, and the evaporator is connected with the compressor outside the oil tank; One end of the cooling oil pipe extends into the oil tank, and the other end is connected to the machine tool by an oil pump. The beneficial effects of the utility model are that: because the compressor is adopted to carry out forced refrigeration, because there are sundries in the cooling oil, the heat exchanger is no longer used, and the evaporator part in the refrigeration system is directly installed in the oil tank.

The utility model can make oil temperature controlled below 30.

1. A cooling oil refrigeration device mainly comprises an oil tank (3), wherein: an evaporator (5) is installed in the oil tank (3), and the evaporator (5) is connected with a compressor (4) outside the oil tank (3); One end of the cooling oil pipe (1) extends into the oil tank (3), and the other end is connected with the machine tool through the oil pump (2).

Oil cooler one of them. A device that accelerates the dissipation of the lubricating oil and keeps it at a low dismantling temperature. In the high-performance high-power additive engine and jujube machine, due to the large heat load, oil cooling must be installed.

But the device. The oil cooler is set in the lubricating oil circuit. Its working or bucket principle is the same as that of a radiator.

The oil infiltration shed cooler is the use of refrigerant.

The principle of evaporative endothermy is used for cooling work.

The oil pump draws the oil from the machine tank into the refrigeration system for heat exchange and cooled hydraulic oil.

Then return to the oil tank of the machine tool through the oil outlet pipeline of the oil cooler, so that the oil temperature of the whole oil continues to drop through the continuous circulation of the oil, and the oil cooler passes the temperature of the temperature controller through the temperature cluster car sensor.

The temperature controller automatically controls the work of the refrigeration unit through the temperature probe to ensure that the oil temperature is always controlled within the normal working range.

Hydraulic oil cooler products are mainly used in the circuit of the hydraulic system. When working, the high-temperature oil in the hydraulic system flows through the hydraulic oil cooler device, and the forced cold air is efficiently exchanged in the heat exchanger, so that the oil temperature is reduced to the working temperature to ensure that the main engine can continue to operate normally, so that the work can be carried out smoothly.

The oil cooler is a turbine oil cooling equipment used in the steam turbine in the power system, the oil cooler is a plain tube surface type, and the circulating water is used as the medium to achieve heat exchange, so as to ensure that the oil temperature at the inlet of the bearing reaches the specified value and ensure the normal operation of the unit.

Characteristics of oil cooler (classification introduction):

1. The water-cooled oil cooler uses water as the medium and oil for heat exchange, which has the advantage of better cooling effect and can meet the requirements of relatively low oil temperature (the oil temperature can be reduced to about 40, and the disadvantage is that it must be used in a place with a water source.)

2. The air-cooled oil cooler uses air as the medium and oil for heat exchange, the advantage is to use air as the cooling source, basically not limited to the place of use, and environmental protection, the disadvantage is that due to the influence of the ambient temperature, when the temperature is high, the oil temperature can not be reduced to the ideal temperature (air cooling is generally difficult to reduce the oil temperature to only 5 10 higher than the ambient temperature).

The main components of the oil cooler are the upper and lower water chambers, the shell pipe system and the oil-filled pipeline, and the shell is connected with the water inlet and outlet pipes, the oil inlet and outlet pipes, the drainage pipes, the oil exhaust pipes, the exhaust pipes and the temperature gauge seat.

The cooling water flow is generally a double process, and the oil cooler is generally installed in a vertical form, or it can be installed horizontally (horizontal oil cooler is selected).

1. The advantages of the series operation of the oil cooler are: good cooling effect and uniform oil temperature.

2. The disadvantages of the series operation of the oil cooler: the pressure drop of the oil is large, and it cannot be isolated when the oil leaks.

3. The advantages of parallel operation of the oil cooler: the oil pressure drop is small, the isolation is convenient, and a group can be overhauled during operation.

4. The disadvantages of parallel operation of the oil cooler: poor cooling effect and uneven oil temperature. 1. Preparation of new stainless steel pipes:

After passing the inspection, the stainless steel pipe will be cut according to the size of the oil cooler, the stainless steel pipe should be 4 5 mm longer than the tube sheet, the burrs at both ends of the stainless steel pipe will be removed, the expansion pipe part will be polished smooth, and the tempering treatment will be carried out at about 50 mm at both ends.

2. Remove the old stainless steel pipe: use a special semi-circular triangular chisel to remove, pay attention not to damage the tube plate when rejecting, remove the stainless steel pipe, clean the tube plate after the old stainless steel pipe is extracted, polish it with a fine sand cloth, and wipe off the dust with a cloth.

3. Wear new pipes and bulges: After the tube sheet and stainless steel pipe are ready, you can wear the new stainless steel pipe, pay attention to not use too much force, lame, aim at your own hole position, the exposed part of the new pipe at both ends should be equal, and the diameter of the tube plate hole is slightly larger than the pipe diameter, about millimeters, and should not be too large or too small. After the stainless steel pipe is worn, the expansion port can be used with a pipe expander, the force speed should not be too large or too small when the pipe is expanded, the length of the expansion pipe should be 2 3 of the thickness of the tube sheet, not greater than the thickness of the tube sheet, and the two ends are flanged with a punch after the expansion.

4. When replacing the stainless steel pipe, half and half should be replaced, and half of the other half should be dismantled.

5. The welded joints after the pipe change need to be leak tested or non-destructive. 1. Air accumulates on the vapor side of the condenser, so that the partial pressure of the steam decreases. As a result, the condensate temperature is reduced.

2. The water level of the condenser is too high during operation. Some of the cooling water pipes were flooded, forming condensate for supercooling.

3. The cooling water pipe of the condenser is not arranged well or is arranged too closely, so that a layer of water film is formed outside the cooling water pipe of the condensate. The temperature of the outer layer of the water film is close to the steam saturation temperature, and the inner layer of the film is close to the outer wall of the stainless steel pipe, so it is close to or equal to the temperature of the cooling water.