Water injection device and system for subcombustible ramjet water swallowing test
A sub-combustion ramming and water spraying device technology, which is applied in the direction of gas turbine engine testing, engine testing, jet engine testing, etc., can solve the problems of inability to ignite the fuel-gas mixture, flameout of the combustion chamber, etc., and achieve simple structure, reasonable location, The effect of high reliability
Active Publication Date: 2021-03-09
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a water injection device and test system for the sub-combustible ramjet water swallowing test to solve the problem that the combustion chamber stalls or the fuel-air mixture cannot be ignited due to swallowing liquid water during the flight of the sub-combustible ramjet engine
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[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0033] From figure 2 It can be seen that the water spray device 4 of the present embodiment mainly includes a water inlet pipe 42, a liquid collecting ring 41 and a flange 8, the liquid collecting ring 41 includes a plurality of concentrically arranged annular pipe sections 48, and the water inlet pipe 42 is arranged along the circular pipe section 48. Arranged radially and communicated with each annular pipe section 48; the liquid collecting ring 41 is provided with a plurality of nozzles 45, the specific number is calculated according to the amount of water sprayed, and the pipe wall of the annular pipe section 48 is provided with nozzles 45. The opening 46. From Figure 4 It can be seen that there is a through hole through which the water inlet pipe 42 passes radially along the flange 8. The water inlet pipe 42 passes through the through ...
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Abstract
The invention provides a water injection device and system for a sub-combustible ramjet water swallowing test to solve the problem that the sub-combustible ramjet engine flames out or the fuel-gas mixture cannot be ignited due to swallowing liquid water during the flight process. Including the water inlet pipe and the liquid collection ring, the liquid collection ring includes N annular pipe sections arranged concentrically, the water inlet pipe is arranged along the radial direction of the annular pipe sections, and communicates with each annular pipe section; M nozzles are arranged on the liquid collection ring, The pipe wall of the annular pipe section has openings communicating with the nozzles, wherein M and N are positive integers. The water spray device of the present invention has been successfully applied to a water swallowing test of a certain type of sub-combustible ramjet engine, and the test run test under simulated real working conditions has verified the feasibility and reliability of its work and guaranteed the progress of model development.
Description
technical field [0001] The invention relates to a water injection device and a test system for a sub-combustion ramjet water swallowing test. Background technique [0002] Missiles may encounter rainy weather when flying at low altitudes. After the sub-combustible ramjet engine swallows liquid water during flight, it will reduce the temperature of the airflow at the outlet of its intake port, making it difficult to vaporize the fuel, which will cause the combustion chamber to stall or fail. Ignite the fuel-air mixture. [0003] The water swallowing test is a very important routine test in the development process of aero-engines, and the water swallowing test must be done before the design of a new aircraft is finalized. The water swallowing test is generally carried out on the complete engine. The test equipment consists of multiple nozzles, conduits, electric valves, flow meters, water pumps and water tanks arranged in front of the engine. The water swallowing test has be...
Claims
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Login to View More IPC IPC(8): G01M15/02G01M15/14
CPCG01M15/02G01M15/14
Inventor 周杰穆杨吴宝元梁俊龙陈开拓许军民杨磊任加万杨振鹏
Owner XIAN AEROSPACE PROPULSION INST