A wavy sealing retaining ring combined rotary dynamic sealing structure

Abstract

The invention relates to a wavy sealing check ring combined rotary dynamic sealing structure. The wavy sealing check ring combined rotary dynamic sealing structure is mainly composed of an abrasion-resisting and low-friction polymer check ring and a standard rubber O-shaped ring. In the working process of the sealing structure, the O-shaped sealing ring deforms under pressure of high-pressure liquid and is tightly attached along the wavy end face of the wavy check ring. In the high-speed rotation process of a pump shaft, the O-shaped sealing ring deforms in three directions and is tightly attached to the surfaces of a shell, the check ring and a rotary shaft, and it can be ensured that high-pressure liquid in another direction cannot leak out from a gap.

Description

technical field

[0001] The invention relates to a high-inlet pressure high-speed booster pump rotary shaft sealing structure for a torpedo seawater pump in an underwater weapon, and is a rotary dynamic sealing structure combined with a wave-shaped sealing retaining ring. Background technique

[0002] The seawater gear pump of the torpedo power system is generally used to pressurize the seawater outboard of the torpedo to a higher pressure after inhalation, and is used for forced cooling of the engine, combustion chamber, etc. Due to the limitation of internal compact space, torpedo seawater pumps generally require a higher working speed to meet the needs of the seawater pump as small as possible, and the maximum working speed is as high as 5600rpm or more. At the same time, because the torpedo requires a large submerged depth to work, the inlet pressure of the seawater pump is as high as 5MPa or more (500m depth). Ordinary industrial gear pumps mostly work at low speeds, an...

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