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fuel level gauge for rds auxiliary fuel tank
The role of the fuel level gauge for rds auxiliary fuel tank, provide an installation location for system components, and also play a role in cooling, separating air bubbles in the fuel, removing foam and precipitated impurities. The fuel tank is a transformer shell with an iron core and windings inside, filled with transformer fuel so that the iron core and windings are immersed in the fuel. Transformer fuel plays the role of heat preservation and heat dissipation. Large transformers generally have two fuel tanks, one is the main fuel tank, and the other is the on-load tap changer box, which is equipped with a tap changer. This is because the tap changer will generate arcs during operation, and frequent operation will reduce the insulation performance of the fuel. Therefore, an fuel tank is provided separately to place the tap changer separately.
According to the size of the transformer capacity, there are basically two types of fuel tank structure: the profile of small and medium-sized transformers for the fuel tank of the crane body. The top cover 1 of this transformer fuel tank can be opened, and it is to be fastened together with the casing shell 2 with many bolts around the casing. The shell 2 is welded with steel plates, and the top is open. Welding requires manufacturing process to prevent fuel leakage, and the body is placed in the box. Since the total weight of medium and small transformers filled with fuel is not too heavy compared with large transformers, when the body of the transformer needs to be repaired, the whole transformer can be transported with fuel to a place with lifting equipment, open the box cover, and put The car body is hoisted out for detailed inspection and necessary repairs.
1-box cover 2-box shell 3-high and low voltage outlet insulation sleeve 4-detachable radiator 5-fuel purifier 6-anquan air duct 7-fuel storage cabinet 8-box cover lifting bracket 9-fuel level gauge 10- Hygroscopic absorber 11-lifting bracket 12-frame suspension bracket type fuel tank With the continuous increase of transformer unit capacity, its volume and weight increase rapidly. At present, large-scale transformer wires are made of copper wires, the body weight is more than 200t, the total weight is more than 300t, and the transportation weight is more than 200t. Such a huge and heavy transformer will bring many difficulties and problems to transport and lifting machinery. Therefore, high-power transformer boxes are made into hanging boxes and casings. When overhauling the vehicle body, the heavy vehicle body will be hoisted out instead of the light box and shell, as shown in the left picture of the figure. The lower part of the box shell has a box side flange, which can be fastened with bolts. Remove the fastening bolts around the side of the box, and hang the outer bell-shaped box shell, that is, the upper fuel tank, so that the whole body is exposed to the air. Because the weight of this kind of box shell is much lighter than that of the body, there is no need for heavy lifting equipment when lifting the box shell, as long as some light lifting tools are prepared at the site where the transformer is installed.
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