DE1216618B - Ignition agent for gas mixtures, especially for engines, e.g. B. gas turbines - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN WTWSSSSL PATENT OFFICE

EDITORIAL

lot. α .:

F02c

Number:
File number:
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German KL: £ 46 -13

1216 618
D 434271 a / 46 f
January 24, 1964
May 12, 1966

Under certain conditions and operating conditions, gas mixtures with air or oxygen can only be ignited by a hot pilot flame that has been burning for a long period of time. This The case is, for example, with certain engines operated with gaseous propellants, e.g. B. Gas turbines before. So far, the so-called ignition lights have been used for this, which are outside the Engine are ignited and after being introduced through an opening in the interior of the machine Ignite propellant mixture. Apart from the cumbersome handling of such ignition lights must you accept the disadvantage that strong residues occur that corrode the machine parts work, especially with residues containing chlorine or sulfur.

The invention avoids such inconveniences that the pilot flame by burning off a hollow powder cylinder housed in a cartridge case from non-corrosive Components is generated by the pilot jet penetrating the cylinder channel a detonator arranged in the base of the cartridge burned down from the end of the case will. A cartridge of this type can by a very simple striking device with firing pin or can be ignited externally by an electric igniter. Residues that pose a risk of corrosion arise not; because as far as the ignition agent contains any components that are dangerous to corrosion, they are only one minimal fraction of the corresponding residues of a pilot light.

The ignition charge of the igniter is put together in a development of the invention so that it when penetrating through the hollow cylinder does not generate the heat required to ignite the powder developed. Rather, one or more foils are placed over the hollow powder cylinder, which through ignited the pilot jet and only in turn cause the powder set to ignite.

In the case of several powder foils lying next to one another, it is advisable to notch the inner foils or punched and the edges of the perforations bent inwards, so that the ignition becomes particularly safe due to the pilot jet. The powder films are generally in one Distance of 30 to 70mm from the igniter.

Burning charge and powder foils are expediently made from the same powder mass. Particularly A mixture of nitrocellulose and nitroglycerin and / or nitroglycol is beneficial for this. The mixture is easy to work with.

Ignition means for gas mixtures, in particular for
Power machines, e.g. B. gas turbines

Applicant:

Dynamit Nobel Aktiengesellschaft,

Troisdorf (district of Cologne)

Named as inventor:

Dr. Hans Stadler, Nuremberg;

Dr. Heinz Gawlick,

Hellmut Bendler, Fürth (Bay.)

In an experimental version with a compact 30 mm in length and an outside diameter of 16 mm and an inner diameter of 6 mm, a burning time of 22 to 30 seconds was achieved. The burning time can be increased accordingly by lengthening the powder body. she is constant with sufficient certainty. If one wants to intensify the flame, the outer diameter becomes of the compact with the same internal diameter. Correspondingly, by shortening reduce the burning time according to the length of the pressed part.

An exemplary embodiment of the invention is shown in the drawing.

The ignition means has approximately the shape of a hunting cartridge with a jacket 1 and a bottom piece 5. In the exemplary embodiment, it is assumed that the jacket is integral with the base piece, is made in particular of plastic. The igniter 2 is inserted into the base piece. The burning charge 3 is formed by a compact with a free inner channel 6. There is one on the pellet Number of powder foils 4 are placed, which are held by the beaded edge 7 of the sleeve 1. The foils are perforated and the edges of the holes are bent inwards at 8.

Claims (4)

Patent claims: 1. Ignition means for gas mixtures with air or oxygen, which are used for ignition over a long period of time Period of time burning hot pilot flame need, especially for gaseous propellants of prime movers, e.g. B. gas turbines, characterized in that the pilot flame by burning off a hollow powder cylinder housed in a cartridge case (1) G09 568/158 ders (3) is produced from non-corrosive components, which is passed through the cylinder channel (6) penetrating pilot jet of a so arranged in the base piece (2) of the cartridge Igniter (2) is brought to burn off from the sleeve end (7). 2. Ignition means according to claim 1, characterized in that the powder hollow cylinder (3) one or more powder foils (4) are placed, which are ignited by the pilot jet and in turn ignite the powder charge (3). 3. ignition means according to claim 1 or 2, characterized in that the powder foils (4) perforated and - the perforation edges (8) are bent inwards. 4. Ignition means according to one or more of the preceding claims, characterized in that that the powder hollow cylinder, (3) and the powder foils (4) consist of a powder that contains nitroglycerin and / or nitroglycol in addition to nitrocellulose. Considered publications:
German Patent No. 957 288;
Kruschick, "Die Gasturbine", Springer-Verlag, 1960, p. 355, fig. 357. 1 sheet of drawings 609 568/158 5.66 © Bundesdruckerei Berlin