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The function of an oil injector is to use a small amount of lubricating oil as power

time:2021-08-20 09:19:15Views:

The function of the oil injector of Lianyungang Lingdong Electromechanical Equipment Co., Ltd. is to use a small amount of lubricating oil as power, suck in a large amount of oil, and supply lubricating system and main oil pump with oil at a certain pressure. The nozzle of the oil injector is connected to the outlet of the main oil pump that provides power oil. High pressure oil leaves the nozzle at a high speed and enters the expansion pipe, forming a negative pressure at the nozzle mouth. Under the action of the negative pressure, the oil in the oil tank enters the joint chamber of the injector through the filter screen, and together with the ejected injection oil, enters the expansion pipe. The kinetic energy of the oil in the expansion pipe is converted into pressure energy.

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The appearance of the oil supply injector and the lubricating oil supply injector are completely identical, and it is difficult to distinguish them from each other in appearance. Therefore, attention should be paid when installing them. The difference method is to install the product logo at the diffusion pipe of each injector, which is written as "I" and "II" respectively. "I" represents the oil supply injector, "II" represents the lubricating oil supply injector. Alternatively, the oil injector 1 # (also known as the oil injector) and the lubricating oil injector 2 # (also known as the second oil injector) can be divided into 1 and 2 oil injectors.

To be more specific, the unit is usually equipped with two oil injectors, installed below the liquid level in the lubricating oil tank. When the unit is put into operation at or near the rated speed. The oil injector consists of a nozzle, a mixing chamber, a diffusion tube, etc. After the pressure oil from the main oil pump passes through the nozzle, the oil velocity increases and forms a low-pressure zone in the chamber. The oil in the tank is pumped into the injector chamber, and then it is carried by a high-speed oil belt into the diffuser throat. The velocity decreases in the diffuser and is converted into pressure energy. Then, through an oil cooler, it is sent through a pipe to the bearing manifold and the main oil pump suction port. Diffusion - equipped with a rocker check valve at the back to prevent oil from flowing back from the system. A check plate is installed on the surface of the oil tank in the chamber to prevent backflow into the oil tank during the operation of the bearing oil pump. To prevent foreign objects from entering the oil injector, a detachable perforated steel plate filter screen is installed on the oil suction side of the injector. The oil injector is one of the essential equipment in the lubricating oil system of the steam turbine generator set. In the lubricating oil system of the steam turbine generator set, the oil injector equipment can be divided into oil supply injectors and lubricating oil supply injectors according to its working purpose. Its working medium is L-TSA 46 turbine oil, with a working oil temperature of 0 ℃ to 70 ℃. When the unit reaches or approaches the rated speed, it is put into operation.

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