DE2436002B2 - Adjustable, low-noise gas generator - Google Patents

Description

The invention relates to a controllable, low-noise gas generator in which a catalytic Reaction a liquid energy carrier, such as. B. hydrazine, hydrazine derivatives, etc., with the release of energy in gaseous form Components is disassembled.

Gas generators are known in which energy sources such as the above-mentioned hydrazine or Hydrazine compounds are broken down into their gaseous components. The resulting gas mixtures are composed essentially of nitrogen, hydrogen, ammonia and optionally water and carbon compounds together. In these known generators, the liquid energy source is a Pressure tank injected into a catalyst bed via an injection system. In this catalyst bed is the Incident of the energy carrier initiated and completed. The resulting gases flow out the catalyst bed at a nozzle opening and are then available to a consumer. Of course can also deliver the energy released during catalytic decomposition to suitable consumers will.

In these known gas generators, in particular in the injection system and in the catalyst bed Complicated flow conditions are maintained at sometimes high flow velocities are associated with considerable pressure losses. As a result, there are limits to the throughput control range set because with constant flow cross-sections and a reduction in throughput, unfavorable or unstable speed conditions can arise at various points on the generator. Further this creates noises which, in special applications, for example in underwater vehicles, may be undesirable.

The object of the invention is to provide a gas generator with a wide control range in which in addition, the noise development is suppressed to a minimum value. This is according to the invention possible in that the catalyst is designed as an immersion body, which is located in a container

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The energy carrier can be immersed immersed in the energy carrier. It is useful for the catalyst immersion body in the Provide a guide inside the container. This guide can be tubular, wherein a seal should be provided between the guide and the catalytic converter immersion body.

The advantage of the gas generator according to the invention is that it is practically isobaric Gas generation pressure losses can be completely avoided and the regulation of the generated per unit of time Amount of gas depending on the immersion depth of the catalyst immersion body designed to be structurally simple can be increased while increasing the control range. In addition, the noise development is limited on the bursting of gas bubbles in the manner of a foaming liquid, for example while boiling.

In the accompanying drawings are several embodiments for gas generators according to Invention .schematisch shown shows Fs

F i g. 1 a gas generator with an adjusting mechanism arranged in the interior of the container for the energy carrier,

F i g. 2 a gas generator in which the adjusting mechanism is arranged outside the container and

3 shows a gas generator, which is particularly suitable for use under conditions which require considerable Can cause sloshing of the liquid energy carrier is suitable.

The F i g. 1 shows a container 1 for the liquid energy carrier 2, the surface of which is denoted by 5 The catalytic converter 3, which is designed as an immersed body, is in the energy carrier 2 by means of the controllable Adjusting mechanism 4 immersible. The resulting from the catalytic decomposition of the energy carrier 2 Gas can be fed to a consumer 6 (not shown) through a relatively large opening in the container 1.

The arrangement according to FIG. 2 differs from that of FIG. 1 in that the adjustable Adjusting mechanism 4 is arranged outside of the container 1, its mechanical connection with the catalyst cloth body 3 with the interposition of a seal 7 through the wall of the container 1 is passed through.

For use of the generator under conditions that cause significant sloshing of the liquid energy carrier 2, it is useful (F i g. 3), for the catalyst immersion body 3 inside the Container 1 to provide a (tubular) guide 8 with several openings 9 for the passage of the Energy carrier or the gas resulting from catalytic decomposition is provided. Between the Guide 8 and the catalyst immersion body 3, a seal 10 is arranged. Furthermore, to dampen the Sloshing partition walls 11 are arranged in the container 1, with openings that are offset from one another are provided for the passage of the resulting gas.

The gas generation in the gas generator according to the invention takes place in that the catalyst immersion body by means of the adjustment mechanism provided, more or less deeply into the liquid Energy carrier is exchanged. The amount of gas produced per unit of time is only dependent on the immersion depth of the catalyst immersion body. The adjustable adjustment mechanism for the Kataiysa

body a wide control range can be achieved. fsator immersion body can consist of a granulate, which is in a sieve-like envelope. Instead, a non-wrapped ■ can be selected that is manufactured using a conventional: haum or honeycomb structure.

1 sheet of drawings

Claims (4)

1 claims: 1. Adjustable, low-noise gas generator in which a liquid energy source is replaced by a catalytic Reaction is broken down into gaseous components with the release of energy, characterized in that that the catalyst (3) is designed as an immersion body, which is in the in a container (1) located energy carrier (2) is immersed 2. Adjustable, low-noise gas generator according to claim 1, characterized in that the Catalyst immersion body (3) into the energy source (2) by means of an adjustable adjustment mechanism (4) is immersible 3. Adjustable, low-noise gas generator according to claim 1 or 2, characterized in that for the catalyst immersion body (3) in the interior of the container (1) a guide (8) is provided 4. Adjustable, low-noise gas generator according to claim 3, characterized in that the Guide (8) is tubular, and that between the guide (8) and the catalyst immersion body (3) a seal (10) is provided