Smoke removing and infrared suppressing device for diesel engine exhaust

Abstract

The invention discloses a smoke removing and infrared suppressing device for diesel engine exhaust. The device comprises a main flow spray pipe, an air ejecting pipe, a mixing pipe, a negative ion generation device, a diffuser pipe, a vortex generator and a rectifying grid, wherein the main flow spray pipe is connected with a main flow inlet in the middle of the air ejecting pipe, and a branch flow inlet is arranged on the outer side of the main flow inlet in the middle of the air ejecting pipe in the circumferential direction. The vortex generator, the rectifying grid and the negative ion generation device are sequentially arranged in the mixing pipe. The negative ion generation device comprises a negative ion generator electricity and heat insulation protection shell, a negative ion generator and a negative ion generator high voltage electrode, wherein the negative ion generator is positioned in the negative ion generator electricity and heat insulation protection shell, and one endof the negative ion generator high voltage electrode penetrates out of the negative ion generator electricity and heat insulation protection shell. According to the smoke removing and infrared suppressing device, cooling and smoke removing of the diesel engine exhaust can be realized, and ionic wind generated by the negative ion generator can promote the mixing of high-temperature and low-temperature gas, thus further reducing the temperature of the exhaust and improving infrared suppressing performance of the device.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to a diesel engine exhaust smoke suppression and infrared suppression device. Background technique [0002] In modern warfare, the stealth performance of weapons and equipment largely determines the battlefield survivability of weapons and equipment, which in turn will determine the outcome of the war. For the army's main battle equipment, diesel engines are generally used as the main power source, but the high exhaust temperature of diesel engines makes the air temperature around the exhaust ports of weapons and equipment increase significantly, which is easy to be found by enemy infrared detection devices , It is not conducive to the infrared stealth of the equipment, and at the same time, a large amount of particulate matter in the exhaust will also reduce the stealth performance of the equipment. [0003] Existing infrared suppression methods for exhaust systems mostly use wate...

AI Technical Summary

Problems solved by technology

For the army's main battle equipment, diesel engines are generally used as the main power source, but the high exhaust temperature of diesel engines makes the air temperature around the exhaust ports of weapons and equipment increase significantly, which is easy to be found by enemy infrared detection devices , which is not conducive to the infrared stealth of the equipment, and at the same time, a large amount of particulate matter in the exhaust will also reduce the stealth performance of the equipment

[0003] Existing infrared suppression methods for exhaust systems mostly use water-cooling method and mixed-air method. Among them, the water-cooled method needs to consume a large amount of water, which is not suitable for land combat weapons and equipment. Therefore, the mixed-air method is more suitable. Fado adopts the design of the lobe nozzle, the structure is too complicated, which is not conducive to the modification of existing equipment, and the simple ejection cooling device has poor mixing effect, limited infrared suppression performance, and does not have the function of smoke elimination

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