JPS6315680Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pipe-shaped filter provided inside a hydrogen storage container to prevent the hydrogen storage alloy stored inside the hydrogen storage container from leaking out.

Conventionally, this type of filter has been made of a sintered alloy such as stainless steel or bronze, and due to manufacturing technology, it is made by welding many short sintered alloy pipes of about 5 cm, which is extremely expensive. Moreover, long ones have the disadvantage that you cannot get things straight to your heart.

This invention was proposed with the aim of eliminating the above-mentioned drawbacks, and includes a holding pipe 2 disposed inside the hydrogen storage container 1 and connected to the inlet/outlet port 1a of the hydrogen storage container 1, and a It consists of a large number of annular plates 3, 3a, and 3b fitted at appropriate intervals to each other, and these annular plates 3, 3a, and 3b are brought into annular line contact with each other, and at least one of the annular plates of this line contact portion is The annular plates 3 and 3 of the holding tube 2 are formed with smooth surfaces to form fine gaps through which hydrogen gas can flow in the line contact areas.
A large number of ventilation holes 6 are provided in the peripheral wall of the part where 3a and 3b are fitted, and the inner space of the above-mentioned gap is communicated with the ventilation hole 6 of the holding tube 2. It is characterized by communicating with the storage alloy.

As in this invention, when one annular plate 3a and the other annular plate 3b with smooth surfaces are brought into line contact to form a line contact part, this line contact part is made of powder such as a hydrogen storage alloy ( For the flow of solid),
In addition, it is resistant to the flow of highly viscous substances such as liquids, and does not function as a flow path.
It is not resistant to the flow of a substance with small molecules and low viscosity, such as hydrogen gas, and functions satisfactorily as a flow path.

The meaning of "fine voids" in this idea means that the above-mentioned line contact area is microscopically full of voids, which provides a sufficient flow path for gases such as hydrogen. It is.

The filter of this invention utilizes the above-mentioned characteristics, and hydrogen gas is passed through the holding tube 2, the numerous vent holes 6 provided on the peripheral wall of the holding tube 2, and the annular plates 3, 3a, 3b.
The hydrogen storage alloy is supplied to the hydrogen storage alloy inside the hydrogen storage container 1 through the fine gaps formed in the line contact portions. Furthermore, due to the characteristics of the fine voids, the hydrogen storage alloy cannot pass through them, and outflow from the hydrogen storage container 1 can be almost completely eliminated.

Examples of this invention will be described below based on the drawings.

FIG. 1 is a side view of a hydrogen storage container equipped with a filter according to this invention, and FIG. 2 is a longitudinal sectional side view of the main parts thereof.

The filter of this hydrogen storage container consists of a holding tube 2 connected to the outlet port 1a of the hydrogen storage container 1, and a large number of annular plates 3 fitted around the holding tube 2 at appropriate intervals.

Although not shown, the hydrogen storage alloy is the annular plate 3
is housed outside.

These annular plates 3 are formed by punching, for example, with a press, and are made of two types: an annular flat plate 3a made of metal and an annular corrugated plate 3b having an annular wave. These two types of annular plates 3a and 3b are arranged coaxially and in line contact with each other alternately, and the outer periphery and the inner space are connected to each other through minute gaps between each annular plate 3a and 3b. Communicate so that hydrogen gas can flow.

The above-mentioned fine voids are formed in the line contact portion of the flat metal annular plate having a smooth surface, and function sufficiently as a flow path for hydrogen gas.

As shown in FIG. 2, the annular plates 3 are held together by a nut 4 screwed onto the tip of the holding tube 2 so as not to separate from each other. The force for pressing these annular plates 3 is set by a spring 5 inserted between the annular plate at the tip and the nut 4. This spring 5 may be omitted, but in that case, it is necessary to adjust the tightening force of the nut 4 so that the gap between each annular plate 3 does not completely close and hydrogen gas cannot flow.

A large number of ventilation holes 6 are provided in the peripheral wall of the portion of the holding tube 2 where the annular plate 3 is fitted.

FIG. 3 is a longitudinal sectional view showing the main parts of another embodiment of this invention.

The filter of this hydrogen storage container is characterized by having a dish-shaped annular plate 3 fitted onto the holding tube 2, and the contact pressure between the annular plates 3 is set by the elastic restoring force of the annular plate itself. Ru.

The rest of the structure is the same as the previous example except that the spring is omitted.

Further, in these embodiments, the annular plate 3 is fitted onto the outside of the holding tube 2, but the annular plate 3 may be configured to be fitted inside the holding tube 2.

Furthermore, the annular plate may be simply composed of an annular flat plate.

Furthermore, it is also conceivable to form the portion of the holding tube in which the ventilation hole is provided with a mesh tube.

As explained above, this invention consists of a filter that is composed of a holding tube connected to the inlet/outlet of the hydrogen storage container and a number of annular plates that are fitted into the holding tube. It is only necessary to make a line contact and form at least one annular plate part of this line contact part with a smooth surface to form a fine gap through which hydrogen gas can flow in the line contact part. It can be manufactured at a much lower cost compared to conventional holding tubes, and it is also possible to form long ones with a straight core through the holding tube.

[Brief explanation of the drawing]

Fig. 1 is a side view of a hydrogen storage container equipped with a filter according to this invention, Fig. 2 is a longitudinal sectional side view of the main part thereof, and Fig. 3 is a longitudinal sectional view showing the main part of another embodiment of this invention. . 1...Hydrogen storage container, 1a...Hydrogen storage container 1
2... Holding pipe, 3, 3a, 3b... Annular plate, 6... Ventilation hole.

Claims (1)

[Scope of utility model registration request] A holding tube 2 disposed inside the hydrogen storage container 1 and connected to the entrance/exit port 1a of the hydrogen storage container 1, and a number of annular plates 3, 3a, and 3b fitted to the holding tube 2 at appropriate intervals. These annular plates 3, 3a, and 3b are brought into annular line contact with each other, and at least one of the annular plates 3, 3 in this line contact portion
forming portions a and 3b with smooth surfaces to form fine voids through which hydrogen gas can flow in the line contact portion;
A large number of ventilation holes 6 are provided in the peripheral wall of the portion of the holding tube 2 where the annular plates 3, 3a, and 3b are fitted, and the inner space of the gap is communicated with the ventilation hole 6 of the holding tube 2. 1. A filter for a hydrogen storage container, characterized in that the filter communicates with a hydrogen storage alloy disposed outside the filter through the filter.