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auxiliary fuel tank level gauge and sending
Difference between Level sensor and level transmitter: Level sensor may not have 4-20mA transmission output, and level transmitter may not have on-site level indication. 1. The level of liquid medium in the container is called liquid level, and the instrument for measuring liquid level is called Level sensor. Level sensor is a kind of level instrument. The types of Level sensor include tuning fork vibration type, magnetic levitation type, pressure type, ultrasonic wave, sonar wave, magnetic flap, radar, etc. 2. Liquid level transmitter is an extension and development of pressure transmitter technology, which achieves accurate measurement and transmission of the volume, liquid height, and weight of water, fuel, and paste based on the principle of linear relationship between the pressure generated by different specific gravity liquids at different heights.
The auxiliary fuel tank is used to store fuel products, provide installation positions for system components, and also plays the role of heat dissipation, separation of bubbles in the fuel, removal of foam and precipitation impurities. The fuel tank is a transformer casing with an internal iron core and winding, which is filled with transformer fuel to immerse the iron core and winding in the fuel. Transformer fuel plays a role in insulation and heat dissipation. Large transformers generally have two fuel tanks, one is the main fuel tank and the other is the on load voltage regulating box, which is equipped with a tap changer.
This is because the tap changer will generate an arc during operation, and frequent operation will reduce the insulation performance of the fuel. Therefore, a separate fuel tank is set up to place the tap changer separately. According to the capacity of the transformer, there are basically two types of fuel tank structures: the crane body fuel tank displays the outline of small and medium-sized transformers. The top cover 1 of this transformer fuel tank can be opened, and it is fastened to the casing 2 of the box with many bolts around the box. Shell 2 is welded with steel plates, with the top open. The welding seam requires a manufacturing process to prevent fuel leakage, and the vehicle body is placed inside the box. Due to the fact that the total weight of medium and small transformers after being filled with fuel is not too heavy compared to large transformers, when the body of the transformer needs to be repaired, the entire transformer can be transported with fuel to a place with lifting equipment, the box cover can be opened, and the body can be lifted out for detailed inspection and necessary repairs.
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