DE2436002C3 - 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 Constituents are dismantled.

Gas generators are known in which energy sources, such as the hydrazine mentioned above or Hydrazine compounds, into their gaseous components be disassembled. The resulting gas mixtures are essentially composed of nitrogen, hydrogen, Ammonia and optionally water and carbon compounds together. With these well-known Generators are the liquid energy carrier from a pressure tank via an injection system into a catalyst bed Injection In this catalyst bed, the breakdown of the energy source is initiated and completed. The resulting gases flow out of the catalyst bed at a nozzle opening and stand then available to a consumer. The catalytic decomposition can of course also be used released energy can be given to suitable consumers.

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 to create a wide control range in which the noise development is also reduced 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

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 shown schematically It shows

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 shows a gas generator in which the adjustment mechanism is arranged outside the container, and FIG

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

1 shows a container 1 for the liquid energy carrier 2, the surface of which is denoted by 5. The gas produced by the catalytic decomposition of the energy carrier 2 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 controllable adjustment mechanism 4 is arranged outside the container 1, the mechanical connection of which with the catalytic converter immersion body 3 is guided through the wall of the container 1 through the interposition of a seal 7.

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

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 deep in the liquid Energy carrier is immersed. 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 catalytic converter

r immersion body a wide control range can be achieved, : The catalyst body can consist of a granulate bed exist, which will hold in a sieve-like envelope. Instead of this, an uncovered body can be chosen using conventional Foam or honeycomb structure is made

Here 1 sheet of drawings

Claims (4)

Patent 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 catalytic converter immersion body (3) can be immersed in the energy carrier (2) by means of an adjustable adjusting mechanism (4) 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 (3) is tubular and that a seal (10) is provided between the guide (8) and the catalytic converter immersion body (3)