Wide working condition liquid hydrogen liquid oxygen torch type electric ignition device

Abstract

The invention discloses a wide working condition liquid hydrogen liquid oxygen torch type electric ignition device. The device comprises an ignition chamber, an oxygen nozzle, a hydrogen cavity outershell and a spark plug, wherein the hydrogen cavity outer shell is a shell body, and a liquid hydrogen inlet is formed in the wall of the shell body; the oxygen nozzle is provided with n through holeswhich axes are intersected with one point, the liquid oxygen is enabled to collide, and atomizing is carried out; a liquid oxygen inlet is formed in the upper end of the ignition chamber, the lower end of the ignition chamber is sleeved with the hydrogen cavity outer shell, and a cavity between the outer wall of the lower end of the ignition chamber and the hydrogen cavity outer shell serves as aliquid hydrogen cavity; the oxygen nozzle is installed inside the ignition chamber, the interior of the ignition chamber is divided into a liquid oxygen cavity and a second inner cavity, and the lower end face of the oxygen nozzle faces the second inner cavity; and a plurality of rows of through holes are formed in the inner wall of the second inner cavity, the lower end face of the ignition chamber is connected with a head part of a lower-level pre-combustion chamber or the head part of a thrust chamber, and the spark plug is inserted into the second inner cavity of the ignition chamber. Thedevice is detachable, high in adaptability, fault detection and maintenance of the electric ignition chamber and the spark plug are facilitated, and the production period and the development cost aresaved.

Description

technical field [0001] The invention relates to a liquid hydrogen and liquid oxygen torch type electric ignition device with wide working conditions, which can be used in the technical fields of aerospace, civil use, ignition and combustion. Background technique [0002] The pre-combustion chamber of a hydrogen-oxygen refueling cycle rocket engine has a large flow rate and a high demand for ignition energy, and the gas needs to enter the thrust chamber for further combustion, and the cleanliness of the combustion products is strictly required. The torch-type electric ignition device has simple structure, high ignition energy, can be started many times, and the combustion product is completely compatible with the pre-combustion chamber and thrust chamber. It has been widely used in hydrogen-oxygen rocket engines, such as the RL-10 series in the United States, J2 Engines, space shuttle main engines, Vinci from Europe, LE series engines from Japan, RD-0120 from Russia, etc. Th...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, a wide working condition liquid hydrogen liquid oxygen torch type electric ignition device is proposed, the ignition reliability is improved from the structural design of the igniter, and the igniter is guaranteed to be highly reliable for a long time It solves the problems of low ignition reliability of the igniter under complex ignition conditions, easy ablation of spark plugs and igniters, and multiple ignitions

Images