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A wavy sealing retaining ring combined rotary dynamic sealing structure

A technology of rotating sealing structure and sealing retaining ring, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of large mechanical seal structure, high processing requirements of parts, complex oil seal structure, etc. The effect of using requirements and low cost

Active Publication Date: 2020-07-14
中国船舶重工集团公司第七0五研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the oil seal is complicated, and the processing requirements of the parts are high; the structure of the mechanical seal is huge, complicated, and the cost is high

Method used

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  • A wavy sealing retaining ring combined rotary dynamic sealing structure
  • A wavy sealing retaining ring combined rotary dynamic sealing structure

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Embodiment Construction

[0015] The invention relates to a rotary motion shaft sealing structure for a gear seawater pump of a thermal power torpedo power system. The present invention will be further described now in conjunction with accompanying drawing.

[0016] The invention belongs to a combination rotary shaft dynamic sealing structure of a wave-shaped sealing retaining ring and an O-shaped sealing ring. as attached figure 1 As shown, it mainly consists of a wear-resistant, low-friction polymer retaining ring 2 and a standard rubber O-ring 5. Taking a typical gear pump application as an example, the high-speed rotating shaft 3 is supported by bearings on the pump casing 1 and protrudes from the hole of the pump casing 1 at the same time. The retaining ring 2 and the O-ring 5 are installed in the stepped hole of the housing 1 . The high pressure fluid is on the O-ring 5 side. In order to facilitate the installation and initial positioning of the O-ring 5, a retaining ring 4 needs to be provid...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/3284F16J15/324
CPCF16J15/324F16J15/3284
Inventor 马小录白坤雪韩雪梅李永东张孝毅王芳
Owner 中国船舶重工集团公司第七0五研究所
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