JPS6144383B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a catalyst plug for a storage battery, and more specifically, a gas phase applied catalyst that combines a mixed gas such as oxygen and hydrogen generated from a storage battery due to overcharging using a platinum group metal catalyst. This invention relates to a plug device.

Conventionally, a catalyst plug for this type of stationary storage battery has a lower opening 2 in a container 1, as shown in FIG.
Gas generated from the storage battery is introduced through the container 1, and a single catalyst container 3 containing a catalyst is disposed approximately in the center of the container 1.

However, in a catalyst plug with such a structure, the amount of reaction gas is limited by the amount of catalyst accommodated, and
Condensation of the produced water vapor depends on the surface area within the vessel.
As a result, the amount of mixed gas that can be processed is limited.
That is, the gas generated from the storage battery increases in proportion to the capacity of the battery. Therefore, by increasing the amount of catalyst in this type of catalyst plug and increasing the size of the container 1, it is possible to cope with a storage battery having a certain capacity. However, for large-capacity storage batteries that generate a large amount of gas, the entire device becomes extremely large, making it difficult to use. Furthermore, if the amount of catalyst is simply increased while keeping the container 1 small, the amount of gas reaction will increase, but the cooling capacity will be insufficient and the condensation of the generated steam will be hindered. Furthermore, as a result of insufficient cooling power, the catalyst temperature rises, leading to accidents such as destruction of the catalyst plug and ignition of the gas.

From the above, conventional catalyst plugs have the disadvantage that when a large amount of gas is generated, the catalyst overheats, leading to an accident.
Merely increasing the size of the container has various drawbacks, such as not being able to cope with large-capacity storage batteries.

The present invention improves the above-mentioned drawbacks, effectively dissipates the heat generated in the stopper due to the reaction between the mixed gas from the storage battery and the catalyst, prevents the catalyst from overheating, and is a small and compact device that can promote the condensation of water vapor. It is an object of the present invention to provide a multi-stage catalyst plug with high efficiency.

To summarize the present invention, a heat pipe is fused within a catalyst plug container, and the space inside the catalyst plug container is divided into a plurality of chambers by a plurality of separation plates having small ventilation holes at arbitrary positions. It is characterized by containing a catalyst substance in each of a plurality of chambers. That is, in the present invention, the performance of the catalyst plug is controlled by the amount of catalyst for reacting oxygen and hydrogen, the volume of the container, the shape, etc., and the upper limit of the catalyst temperature is also determined by the maximum gas reaction amount determined by the structure of the catalyst plug. It was proposed based on the knowledge that when processing a gas amount that exceeds the amount that can be treated with a single catalyst plug, it can be handled by connecting multiple catalyst plugs in series. It is characterized by promoting liquefaction by suppressing the temperature rise of the catalyst, which is a problem in catalyst plugs for capacity storage batteries, and by increasing the surface area of the container, which is effective for condensing water vapor. Therefore, in the present invention, the catalyst is divided and arranged to expand the heat dissipation surface area and suppress the temperature rise of the catalyst.In addition, a metal plate for liquefaction and a separation plate are provided inside the catalyst plug, and the heat of the separation plate is transferred to heat. Measures are taken to radiate heat to the outside of the catalyst plug using a pipe. Furthermore, in order to further enhance the functions of both, compartments are formed using separation plates, and the catalyst is divided and placed inside each compartment. These measures suppress the temperature rise of the catalyst and effectively liquefy the generated water vapor, making it possible to obtain a small-sized catalyst plug with good performance.

Further, the structure of the present invention will be explained with reference to the attached drawings. In the drawings, reference numeral 11 denotes a hollow container, and an exhaust hole 12 is formed in the upper part of the container 11 for exhausting excess gas inside to the outside. , and the exhaust hole 12 is provided with a bottomed cylindrical explosion-proof filter 13 made of porous alumina porcelain. Further, the lower part of the container 11 is screwed to a storage battery (not shown) case via a threaded part 14 formed on the outer periphery, and a mounting is provided for integrally connecting the storage battery and the catalyst plug according to the present invention. A port 15 is formed, and separator plates 16 extending alternately are formed on the opposing inner circumferential walls of the mounting port 15 so as to protrude from each other, thereby forming a return water port 17 with a separator plate. .

Separation plates 18 are arranged at predetermined intervals along the height direction of the catalyst stopper of the container 11, and the interior of the container 11 is divided into a plurality of chambers by these separation plates 18. A catalyst housed in a catalyst container 19 made of alumina porcelain is disposed in each chamber. The separation plate 18 is made of a metallic material and has a conical shape in consideration of thermal conductivity. Therefore, a small ventilation hole 20 is formed at the top of the separation plate 18 to communicate between each chamber, that is, each space, in the container 11 formed by the separation plate 18. A bellows 21 is formed around the separation plate 20 and extends radially from the center to the outer periphery for the purpose of increasing the surface area of the separation plate 18. Further, an appropriate number of slits 22 are formed along the periphery, which serve as reflux of generated water. A heat pipe 23 is fused to the separation plate 18 to effectively exchange heat with the outside air, with one end exposed near the small hole 20 and the other end exposed outside the container 11. provided,
A heat dissipation fin 24 is provided on the externally exposed portion. In addition, in the illustrated example, the heat pipe 23
are provided every 90 degrees, but the number and arrangement of the heat pipes 23 can be changed as necessary. In addition, although the above description shows an example in which the small ventilation holes 20 are formed at the top, they are not necessarily limited to the top, and may be formed at any position on the separation plate 18 excluding the heat pipe portion. It is also permissible to do so. Furthermore, the number of separation plates 18 is not limited to two, and may be arranged according to the capacity of the target storage battery used in combination.
It can be increased or decreased as appropriate.

Next, the operation of the present invention configured as described above will be explained.

In the catalyst plug of the present invention, the inside of the plug is divided into several chambers,
Each chamber communicates only with a small ventilation hole 20. As a result, the free flow of gas between each chamber is impeded,
Each chamber acts as a catalyst plug of the same size.
That is, in each chamber, the amount of gas reaction is limited by the maximum amount of reaction gas defined by the amount of catalyst and its volume, so even if a large amount of gas is generated from the storage battery, the reaction will start from the lower chamber. In other words, gas that overflows the first chamber below flows into the second chamber above and reacts therein, and gas that cannot be processed even in the second chamber reacts in the third chamber.

In this way, in the present invention, since a large amount of gas is also dispersed in each chamber and reacted, overheating of the catalyst can also be prevented. In addition, by using the separation plate 18 with the heat pipe 23, the reaction heat can be quickly removed to the outside, so there is no accumulation of heat inside the plug, and the generated water vapor is also condensed by the separation plate 18 and the inner wall of the container 11. can do.

As described above, according to the present invention, the space inside the stopper is divided into a plurality of chambers by partitioning the space inside the plug with a separation plate having a heat pipe, and the catalyst is distributed in each chamber. As a result, the maximum amount of reaction in each chamber is limited, and even if a large amount of gas is generated, it can be divided and reacted in each chamber, and accidents due to overheating of the catalyst will not occur. Furthermore, since heat can be effectively dissipated by the heat pipe, the catalyst plug can be configured with a smaller container than the conventional type.
Furthermore, as a result of adopting the stacking type, there are advantages such as the ability to freely assemble catalyst plugs that match the capacity of the storage battery.

[Brief explanation of the drawing]

FIG. 1 is a conventional catalyst plug, and FIG. 2 is a cross-sectional explanatory diagram showing an embodiment of a catalyst plug for a storage battery according to the present invention.
FIG. 3 shows a plan view of a separation plate applied to the present invention. 18... Separation plate, 19... Catalyst container, 20... Small ventilation hole, 23... Heat pipe.

Claims (1)

[Claims] 1 Oxygen generated from the storage battery during charging is contained in the container.
In a catalyst stopper containing a catalyst material for recombining a mixed gas such as hydrogen, the space inside the container is layered by a plurality of separation plates having heat pipes fused to each other and having small holes for ventilation at arbitrary positions. 1. A catalyst plug for a storage battery, characterized in that the catalyst plug is divided into a plurality of chambers forming a shape, and each chamber contains a catalyst substance.