JPS6312641B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-liquid separation device that can always discharge only liquid from the outlet of a propellant tank.

In space, where there is no gravity, acceleration constantly fluctuates in the range of micrograms to several grams, making the liquid in the propellant tank unstable and making it difficult to fix the liquid level. Therefore, gas is mixed into the liquid in the tank, so
A gas-liquid separator is required to always extract only liquid from the outlet of the propellant tank.

Examples of such conventional gas-liquid separators are shown in FIGS. 1 and 2.

In Fig. 1, a is the tank body, b is the diaphragm housed in the tank body a, c is the discharge port for the propellant d, and e is pressurized gas for compressing the diaphragm b. The propellant d is compressed by the gas e and is discharged from the discharge port c. However, such conventional devices have drawbacks such as difficulty in increasing their size, lack of reliability of diaphragm b, and inability to reuse.

Further, f in FIG. 2 is a rubber bladder, and the same reference numerals as those shown in FIG. 1 indicate the same parts. In this device, the propellant trapped in the bladder f is compressed by the pressurized gas e and is discharged from the discharge port c. However, in the conventional device, the bladder f
Since it is made of rubber, it cannot be used with some types of propellant, cannot be made larger, and has disadvantages such as lack of reliability of rubber and being unable to be reused.

The present invention was made for the purpose of providing a gas-liquid separation device that can be enlarged, is highly reliable, and reusable, and includes a discharge pipe whose one end is inserted into a tank body, and an insertion pipe into which the discharge pipe is inserted. A plurality of perforated multilayer cylinders are attached to the tank body so as to surround the tank body and have a large number of small holes, and the gaps between the perforated multilayer cylinders are gradually increased outward from the discharge pipe side.

Embodiments of the present invention will be described below with reference to the drawings.

A discharge pipe 2 is connected to the tank body 1, one end of the discharge pipe 2 is inserted into the tank body 1, and a support 3 fixed to one end of the discharge pipe 2 is provided with a plurality of small holes. Multilayer cylinder 4a, 4b, 4
c and 4d are attached approximately concentrically to the discharge pipe 2. The perforated multilayer cylinder has the following dimensions: the distance between the discharge pipe 2 and the cylinder 4a is l ₁ , the distance between the cylinders 4a and 4b is l ₂ , the distance between the cylinders 4b and 4c is l ₃ , and the distance between the cylinders 4c and 4d is If the interval is l ₄ , then l ₁ < l ₂ < l ₃ < l ₄ so that the interval becomes smaller towards the inside, and the perforated multilayer cylinder 4
If the heights of a, 4b, 4c, and 4d are h ₁ , h ₂ , h ₃ , and h ₄ , the height is higher toward the inside, and the inner surface of the tank body 1 and the end portions of the perforated multilayer cylinders 4a, 4b, 4c, and 4d Set h ₁ > h ₂ > h ₃ > h ₄ so that the gap between
α is the angle at which the straight line connecting the lower ends of the perforated multilayer cylinders 4a and 4b is inclined with respect to the horizontal line, and β is the angle at which the straight line connecting the lower ends of the perforated multilayer cylinders 4b and 4c is inclined with respect to the horizontal line. If the angle at which the straight line connecting the lower end of the multilayer cylinder 4c and the lower end of the multilayer cylinder 4d is inclined with respect to the horizontal line is γ, then 0<α, β, and γ<90 are formed. In the figure, 5 is a cross-shaped vortex stopper plate provided at the propellant inlet of the discharge pipe 2, and 6 is a cross-shaped vortex stopper plate provided between the supports 3 and 3 to discharge the propellant from the tank body 1 to the discharge pipe 2. A discharge port 7 is a cover plate provided to prevent the propellant from passing through the perforated multilayer cylinder from the tank body 1 and being directly discharged into the discharge pipe 2, and 8 is a perforated multilayer cylinder 4a, 4b, 4c provided with a large number of small holes. , 4d are perforated plates to which are fixed. Moreover, the multilayer cylinders 4a, 4
The size of the small holes in b, 4c, and 4d is 0.001mm to 5.0mm.
The pitch of the small holes should be 0.0015mm to 5.5mm.

When discharging the required propellant from the tank body 1 to the discharge pipe 2, pressurized gas is supplied into the tank body 1, and the propellant is discharged from the tank body 1 to the discharge pipe 2 due to the pressure. . Therefore, the perforated multilayer cylinder 4
When a, 4b, 4c, 4d or the perforated plate 8 are immersed in the propellant, the propellant passes through the cylinder and the small holes in the perforated plate and is discharged from the discharge port 6 into the discharge pipe 2. , the air bubbles in the propellant are perforated multilayer cylinders 4a, 4b,
4c, 4d, and are trapped by the perforated plate 8.

When the propellant decreases to a predetermined amount, a liquid level A occurs between the outermost perforated multilayer cylinder 4d and the inner surface of the tank body 1, as shown in FIG. It passes through the cylinder as appropriate and is discharged to the discharge pipe 2. Air bubbles are trapped between the liquid level A and the multilayer cylinder.

When the propellant decreases further, the propellant is retained in the perforated multilayer cylinders 4a, 4b, 4c, and 4d, as shown in FIG. 5, and the surface tension of the propellant causes the multilayer cylinder 4 to
There is a liquid level B between the lower ends of the multilayer cylinders 4c and 4c.
A liquid level C is formed between the lower ends of the multilayer cylinders 4b and 4a, a liquid level D is formed between the lower ends of the multilayer cylinders 4b and 4a, and a liquid level E is formed between the lower ends of the multilayer cylinder 4a and the side surface of the discharge pipe 2. In this case, the surface tension of the liquid surface is determined by the gap l ₁ between each multilayer cylinder,
It is determined by l ₂ , l ₃ and l ₄ , and since E>D>C>B,
First, the propellant between the multilayer cylinders 4d and 4c is the multilayer cylinder 4c.
The propellant between the multilayer cylinders 4c and 4b is then discharged from the multilayer cylinder 4b into the space between the multilayer cylinders 4b and 4a, and then The propellant between 4b and 4a is discharged into the space between the multilayer cylinder 4a and the discharge pipe 2, and finally the propellant between the multilayer cylinder 4a and the discharge pipe 2 is discharged into the discharge pipe 2. Therefore, the propellant flows toward the center, so that the propellant can be discharged well.
Air bubbles in the propellant are formed when the propellant passes through each multilayer cylinder.
It is trapped in the space between each multilayer cylinder. In addition, when liquid levels B, C, D, and E are generated between the multilayer cylinders due to surface tension, the propellant is separated from the inner surface of the tank body 1, so that the heat entering the propellant from the outside can be reduced. This reduces the amount of liquid evaporation.

In addition, in the embodiment of the present invention, the case where four sets of perforated multilayer cylinders are provided has been described, but it is possible to implement any number of sets of multilayer cylinders with multiple _{holes .} Although it is particularly effective for low boiling point propellants, it goes without saying that it can also be applied to other propellants, and that various other changes can be made without departing from the gist of the present invention. be.

According to the gas-liquid separator of the present invention, it is possible to perform gas-free liquid discharge even under conditions of low acceleration level, and the tank body can be made larger, and compared to conventional systems, it is possible to perform gas-free liquid discharge. Since there are no moving parts, the equipment is more durable and reliable.
Furthermore, it can exhibit excellent effects such as being reusable and economical.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an example of a conventional gas-liquid separation device,
FIG. 2 is an explanatory diagram of another example of a conventional gas-liquid separation device,
Fig. 3 is an explanatory diagram of one embodiment of the gas-liquid separator of the present invention, Fig. 4 is a view taken from the - direction arrow in Fig. 3, and Fig. 5 is a propellant discharged by the gas-liquid separator of Fig. 3. FIG. In the figure, 1 is the tank body, 2 is the discharge pipe, 4a, 4
b, 4c, and 4d indicate perforated multilayer cylinders.

Claims (1)

[Claims] 1 A plurality of perforated multilayer cylinders having a large number of small holes are arranged approximately concentrically within the tank body so as to surround the insertion part of the discharge pipe whose one end is inserted into the tank body, and the holes between the perforated multilayer cylinders are A gas-liquid separation device characterized in that the gap gradually increases from the discharge pipe side outward.