JPH03145505A - Instant depressurization method and lithium engine applying this method - Google Patents

Abstract

PURPOSE:To instantaneously reduce the pressure in a system to simply and quickly start a lithium engine by sealing a hydrogen-oxygen mixture gas in the system requiring pressure reduction, and igniting the mixture gas to react hydrogen with oxygen. CONSTITUTION:In a closed cycle type lithium engine, feed-water sealed in an accumulator 1 is injected through a solenoid valve 2 into a boiler 3. At the same time, fuel from a fuel tank 4a is injected through a solenoid valve 6 into the boiler 3 to be ignited. As a result, steam produced in the boiler 3 drives a turbine 7, and is condensed and liquefied, then returned through a feed-water pump 11 to the boiler 3. In this constitution, a gas mixture in which hydrogen is mixed with oxygen at a volume ratio of 2 to 1, is sealed in a circulating path of wafer or stream except an installation place of the boiler 3, etc. The gas mixture is ignited to react hydrogen with oxygen to instantaneously reduce the pressure in the system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for instantaneously reducing pressure in a system and a lithium engine using the instantaneous pressure reducing method.

[Conventional technology]

Due to its characteristics, lithium engines have a restriction that the interior must be in a vacuum state before the engine starts. However, since the engine has several sliding parts such as the drive shaft, the vacuum holding capacity is not high, so the vacuum pump of the equipment was used to draw the vacuum until just before the engine was started. .

The above facts will be explained using the outline of a closed cycle lithium engine as shown in FIG.

In Fig. 1, 1 is an accumulator, 2 is a solenoid valve, and 3 is an accumulator.
is a boiler, 4 is a fuel tank, a fuel supply source consisting of 4a and a supply valve 4b, 5 is a fuel control valve, 6 is a solenoid valve, 7 is a turbine, 8 is a speed reducer, 9 is a propeller, 10 is a capacitor, 11 is a water supply 12 is a water control valve, and 13 is a vacuum pump.

The water supply sealed in the accumulator 1 is supplied to the solenoid valve 2
When the solenoid valve 6 becomes "open", fuel is injected into the boiler 3. At almost the same time, when the solenoid valve 6 becomes "open", fuel is injected into the boiler 3 and ignited. As a result, steam is generated from the boiler 3.

This steam drives the turbine 7, is condensed and liquefied by the condenser IO, and goes to the water supply pump 11. It then returns to boiler 3 and becomes a closed cycle.

However, if air is mixed in the pipe system that communicates the boiler 3, turbine 7, condenser lO, etc., the steam generation of the boiler will be uneven, which will cause the initial propeller shaft rotational speed to rise slowly and This causes uneven rotation speed and increases the burden on the materials of each device.

Therefore, it was necessary to provide a vacuum pump 13 to evacuate the inside of the pipe at the initial stage of starting the engine.

[Problem to be solved by the invention]

As mentioned above, lithium engines do not have a high vacuum retention capacity, so a vacuum pump is used to evacuate the engine until just before it starts. However, when a lithium engine is used as an engine for an underwater vehicle, for example, After feeling the need to start the engine, it is absolutely impossible to prepare for such things as activating the vacuum pump, and (2) underwater vehicles are sometimes launched by dropping from a helicopter, etc. There are fundamental problems, such as the inability to provide incidental equipment such as vacuum pumps on such an aircraft.

In view of the above-mentioned state of the art, the present invention provides (1) a method that can instantaneously reduce the pressure inside the system, and (2) a method that instantly connects the boiler tube, turbine, and condenser by applying the same method. The aim is to provide a lithium engine that can be depressurized.

[Means to solve the problem]

The first aspect of the present invention is to seal a mixed gas of hydrogen and oxygen in a system that requires reduced pressure, and ignite it to cause the hydrogen and oxygen to react instantaneously, thereby instantly reducing the pressure in the system. In this method, a particularly preferred embodiment is to set the mixing ratio of hydrogen and oxygen to 2:l and to set the sealing pressure to atmospheric pressure or higher.

Further, a second invention is an engine using a lithium engine as fuel, which includes: an engine body in which hydrogen and oxygen are sealed at a mixing ratio of 2:1 in a system that communicates a boiler, a turbine, and a condenser; This is a lithium engine equipped with an ignition means. In this case, the ignition device can be installed at any location within the system where water or steam circulates, excluding locations where equipment such as boilers, turbines, condensers, and water supply pumps are installed. Also, any method such as an electric spark method or a heating method can be adopted.

[For production]

Hydrogen and oxygen, especially a mixture of them in a ratio of 2 = 1, is also called detonation gas, and when ignited it explodes into water, so when ignited, the pressure in the system instantly decreases. .

Since the above reaction causes detonation, the reaction in the system of an underwater vehicle with a piping length of 40 m or more is completed in less than 0.1 seconds, and the high vacuum level (-740-0g) is Get it instantly. Even if this reaction that causes detonation occurs, the strength within the system of a normal underwater vehicle is sufficient and there is no problem.

(Embodiments) Hereinafter, embodiments of the present invention (including embodiments of the first invention and the second invention) will be explained with reference to the above-mentioned Fig. 1. The dotted line on the outside of the yarn path indicates the position where the ignition device can be installed.

First, the boiler 3, turbine 7, and capacitor I in FIG.
In the water or steam circulation system other than the installation location such as O,
A mixed gas of hydrogen and oxygen with a volume ratio of 2:1 is filled in. To fill in hydrogen and oxygen, after making the system vacuum, hydrogen,
It is best to fill in oxygen at a ratio of 2:1 to approximately atmospheric pressure or higher, and then place an ignition device as shown in Figures 2 and 3, which will be described later, at the position indicated by the dotted line in Figure 1. Install it in the system at any point in the system. Although a plurality of ignition devices may be installed, one ignition device is sufficient for a line of an underwater vehicle with a path length of about 40 m in terms of -C. In this state, the lithium engine is maintained in a standby state.

When a start signal is received from the lithium engine, the ignition device is ignited, and the hydrogen and oxygen in the system instantly react, creating a reduced pressure (almost a vacuum) inside the system.

An example of an ignition system will be explained with reference to FIGS. 2 and 3. In FIG. 2, 14 is a spark plug, 15 is a high-voltage oscillator, and 16 is
1 is the control panel, 17 is the water landing detector, and 1 is the water landing detector in Figure 3.
4' is an ignition source, 15' is a power source, and 16.17 is the same as in FIG. 2.

The high-voltage oscillator 15 in FIG. operates, and a spark is generated from the spark plug 14 provided in the yarn path to ignite. In addition, in FIG. 3, the signal
ls' is activated, and the ignition source 14' ignites and ignites.

Almost simultaneously with ignition, hydrogen and oxygen react, producing water and instantly creating a vacuum inside the system. Due to the reaction between hydrogen and oxygen,
Detonation occurs, momentarily 7-8 kg/c
(2) Pressure is generated, but the yarn path and each equipment can sufficiently withstand this pressure.

When the inside of the system is in a vacuum state, the solenoid valve 2 is opened and the feed water sealed in the accumulator 1 is injected into the boiler 3 as described above, and at the same time the solenoid valve 6 is opened and the fuel lithium is injected into the boiler 3. is injected into the boiler 3 and ignited. As a result, steam is generated from the boiler 3, which drives the turbine, is condensed by the condenser 10, becomes liquefied, goes to the feed water pump 11, and returns to the boiler 3 to form a closed cycle.

〔Effect of the invention〕

(1) According to the present invention, the inside of a system that requires reduced pressure can be brought into a reduced pressure state in an extremely short time.

(2) A lithium engine is provided in which the inside of the water and steam circulation system of the lithium engine can be brought into a nearly vacuum state in a short time. Therefore, the lithium engine can be started instantly, and a vacuum pump is not required, so weight reduction can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the present invention and a conventional lithium engine;
FIGS. 2 and 3 are schematic diagrams showing an embodiment of the ignition device when the thread path through which water or steam circulates in the lithium engine of the present invention is brought into a vacuum state.

Claims (1)

[Claims] 1. An instantaneous depressurization method characterized by sealing a mixed gas of hydrogen and oxygen in a system that requires depressurization and igniting it to cause hydrogen and oxygen to react instantaneously. 2. The instantaneous vacuum method according to claim 1, characterized in that the mixing ratio of hydrogen and oxygen is 2:1. 3. In an engine that uses lithium as fuel, the boiler,
A lithium engine comprising: an engine body in which hydrogen and oxygen are sealed at a mixing ratio of 2:1 in a system that communicates with a turbine and a condenser; and ignition means provided in the system.