SU130142A1 - Device for pulsating fuel combustion - Google Patents

Description

A device for pulsating fuel combustion is known, comprising two systems of pulsating tubes with corresponding combustion chambers. These tube systems interact in counter-reaction so that the energy of a portion of the flue gas generated in the chamber of one system of pulsating tubes is used to supply fresh air to the combustion chamber of another system. Typically, both tube systems are enclosed in a common housing, and their chambers are connected by channels. The drawbacks of such devices are the complexity of the design and their unreliability in operation.

To eliminate these drawbacks, it is proposed that both systems of pulsating tubes be installed separately one near the other and provided with tapering nozzles arranged on the same axis and directed oppositely. Such nozzles perform the role of nozzles in the direction of the exit of gases and diffusers in the direction of the air inlet. In addition, the nozzles can be provided at the ends of the mix, imis nozzles. In order to form a vacuum in the combustion chambers, which improves the flow of fresh air into the chambers and creates vortical gas movement, the pulsating tubes are positioned tangentially to the combustion chambers.

FIG. 1 shows the proposed device in the plan; in fig. 2 - the same, longitudinal section; in fig. 3 is the same section of line A-A in FIG. 2; in fig. 4 and 5 - nozzles in longitudinal section.

The device consists of two pulsating pipes / parallel to each other, tangentially adjacent to combustion chambers 2. Each of the pipes is equipped with a nozzle 5 and a valve 4 for supplying fuel to the combustion chamber. Nozzles have a conical shape and are located one against the other. Fittings 5 are designed to attach blanket plugs (not shown in the drawing).

No. 130142-2 A fuel chamber B is supplied through the annular channel 6 of valve 4 (FIG. 3). On the valve stem, on the one hand, there is a recess 7 for increasing the resistance to the return flow of gases from the chamber, and on the other side of the stem there is a screw 8 for adjusting the amount of fuel supplied to the chamber.

The nozzle 3 has a centrally tapered hole 9 and several annular channels 10. At the end of the nozzle there is a mixing nozzle n.

After burning a portion of the fuel in the combustion chamber of one pipe, most of the flue gases through this pipe go outside, and the rest of the flue gases through nozzles 3 enters the combustion chamber of the second pipe, where simultaneously with a stream of flue gases fresh outside air is sucked through the mixing nozzle. The fuel in this chamber ignites, and the gases coming out of the second pipe inlet supply air to the combustion chamber of the first pipe. This process is then repeated.

Nozzles 3 can be made without channels (Fig. 4) or with a filler 12 streamlined shape. Such nozzles have a less complex structure, past, e to manufacture, less polluted during operation and their service life is extended. However, the efficiency of such attachments is lower than that of the nozzles with channels.

All parts of the device exposed to high temperatures must be cooled with water.

Subject invention

Claims (3)

1. A device for pulsating fuel combustion, containing two systems of pulsating tubes with corresponding combustion chambers, interacting with each other alternately in counter-attack so that the energy of a part of the flue gases generated in the combustion chamber of one system of pulsating tubes is used to supply fresh air into the combustion chamber the other system, in order to simplify the design and increase the reliability of operation, both systems of pulsating tubes are installed (separately, one near the other and equipped with narrowing nozzles located on the same ssi and directed in opposite directions, which serve as nozzles in the direction of the outflow of gases and diffusers in the direction of the intake of air.   2. A device according to claim 1, characterized in that the nozzles are equipped at the ends with mixing Nozzles. 3. In the device according to claim 1, the tangential arrangement of the tubes with respect to the combustion chambers.