JPS61244622A - Leakless, fire prevention fuel tank - Google Patents

Abstract

PURPOSE:To keep off a fuel leakage at a sudden turnover as well as to improve improvements in safety, by connecting a long pipe, having ha float and a weight at its tip end, directly to a fuel tank for an automobile or the like and an air hole of an empty tank to be directly connected to the former. CONSTITUTION:A pipe having a float and a weight at its tip end is installed in an empty tank directly connected to a fuel tank after being attached to an air hole 1. With this constitution, at normal time air flows in 1 2 3 4 or 4 3 1 1 in order, thus internal air pressure regulation takes place. And, at a sudden turnover, even if fuel flows into the empty tank as in 4 3 from the fuel tank, the pipe is floated upright on a fuel surface owing to the float and weight, preventing the fuel from leaking, and an air pressure regulating function is kept up. With this constitution, safety is well improvable.

Description

DETAILED DESCRIPTION OF THE INVENTION Fuel tanks for automobiles and the like originally have holes in the lid and other upper parts in order to adjust the internal air pressure. Therefore, during a quadruple turn, fuel leaked from the hole and caused a fire, further increasing the damage caused by the accident. Therefore, the leak-proof disaster prevention fuel tank of the present invention is designed by directly connecting a long pipe with a float shown in Figure 1 ABC at the tip to the air hole, which adjusts the internal air pressure during normal operation and also prevents fuel leakage even in the case of quadruple rotation. Therefore, no fire occurs. The only problem is that automobile fuel tanks have a frame fitted all over the inside of the tank to prevent agitation, so an empty tank that is directly connected or connected is necessary. If you do things like 1, 3, and 5 in Figure 7, you won't be unable to fill an empty tank with fuel, but I don't think it will work as a practical matter.

[Brief explanation of drawings]

Figure 1A shows a device with a float and a weight at the tip of the tube, so that the tip of the tube always floats above the fuel even during quadruple rotation, regulating the pressure inside the tank and preventing fuel leakage. Figure 1B shows that when a part of an empty tank is filled with fuel, the float gets stuck on the ceiling and the valve is closed to prevent fuel leakage, and the air pressure is adjusted by the action of other pipes and the float. C in Figure 1 is a float that does not open the valve unless some pressure is applied, so it is not necessary at the moment, but I think it will become necessary as the tests are repeated. Figure 1D shows a device in which the weight falls from the cup during a quadruple roll, and the string is pulled to close the stopper and stop the flow of fuel. Figure 1 E shows when a major accident occurs.
This device automatically closes the oil pipe plug even if the fuel tank, fuel pump, fuel injection device, etc. are separated. Fourth
Figure F shows a device in which during a quadruple roll, a weighted ball in the shape of two pincers rolls, the string loosens, and the valve closes to stop the flow of fuel. Figure 4 G refers to cars that move rapidly, and to prevent the float from breaking and catching fire, place the float in a recess or enclosure and hold it firmly with a spring. , Figure 4F
Pull the string with the weight to release the spring and raise the float to prevent fuel leakage. Figure 2 shows the long pipe in the empty tank of the connection.
The device shown in Figure A is 1-2-3-4, 4-4 during normal operation.
Air flows in the order of 3 to 2 to 1, and during 4 rotations, even if fuel flows into the empty tank from 4 to 3, due to the action of the float, the fuel will not leak out of the tank. The empty tank needs to be slightly larger than the fuel tank. Although it would be possible to have more than one empty tank due to space constraints, we decided to use a small empty tank no matter what, as shown in Figure 3. This partitions the lower part to allow free movement of the float, and under normal conditions 1~
Air flows in the order of 2-3-4-5, 5-4-3-2-1, and when turning four, only a small amount of fuel flows into the empty tank due to the action of the float. The small empty tank on the left above will fill up, but since we are using float B, it will not flow into the empty tank on the right. 10 is an alternative to 3, but which one is better is a test result. If you open both at the same time, fuel will leak from 10. Figure 5 is a modification of Figure 3, with normal conditions 1~2~3.
Air flows in the order of 3 to 2 to 1, and during quadruple rotation, the weight rolls upwards in the drawing, valves 3 to 6 are closed, springs 2 to 5 are released, and due to the action of the float, fuel is released outside the tank. is a mechanism that does not leak. I have also clearly indicated the location of E in Figure 1. Figure 6 is a connected version of the direct connection type in Figure 3, so I don't think there is any need to explain it. Figure 7 1 shows an empty tank on the left and right, 2 shows the top and bottom, 3 shows an octagonal tank, and 5 shows an egg-shaped tank with 6 empty spaces and each is equipped with the float of B. Figure 4 is a simplified version of Figure 3, and the drawback is that when the pressure inside the fuel tank increases, the fuel is pushed up into the empty tank. Use A for floating.

Claims (1)

[Claims] By installing ABCDE in Figure 1, FG in Figure 4, and similar devices inside and outside of fuel tanks and empty tanks that are directly or connected to fuel tanks, automobiles, tanks, etc. can be prevented from overturning, capsizing, standing on their sides, or falling into a tailspin. This is a leak-proof disaster-prevention fuel tank that will not leak fuel and cause a fire even in the event of an accident.