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Mechanical sealing device of high-pressure water pump

A technology of mechanical sealing device and high-pressure water pump, applied in mechanical equipment, components of pumping device for elastic fluid, pump, etc. Reduce maintenance costs, improve lubrication effect, and enhance the effect of liquid film thickness

Inactive Publication Date: 2021-05-21
GAOYOU GAONONG MACHINERY FITTINGS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pump runs intermittently, starting once a day, and the running time is about 2 hours. The start and stop are very frequent, which is not conducive to the operation of the mechanical seal; the average service life of the mechanical seal of the pump is about half a year
Frequent maintenance brings great hidden dangers to production safety and stability, and also increases maintenance costs
According to the previous maintenance data, the average operating life of the mechanical seal is about 800h; the main failure mode of the seal is the wear or rupture of the dynamic and static rings, and annular grooves or radial cracks appear on the end face of the seal ring, often accompanied by high temperature burning signs, thereby reducing the sealing performance of the pump

Method used

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  • Mechanical sealing device of high-pressure water pump

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Embodiment Construction

[0010] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0011] Such as figure 1 A high-pressure water pump mechanical sealing device is shown, the sealing device includes a dynamic sealing ring 2 installed on the rotating shaft 1 and a static sealing ring 4 installed in the mechanical seal seat 3, the outer ring of the dynamic sealing ring 2 is provided with a groove 21 , The groove 21 is provided with a limiting block 22, the outer ring of the limiting block 22 is sleeved with a spring 23, the spring 23 presses the dynamic sealing ring 2 to the static sealing ring 4, and the outer ring of the static sealing ring 4 is provided with an arc groove 41. With this structural design, the cost of inspection ...

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Abstract

The invention relates to a mechanical sealing device of a high-pressure water pump. The mechanical sealing device of the high-pressure water pump comprises a movable sealing ring and a static sealing ring, wherein the movable sealing ring is mounted on a rotating shaft, and the static sealing ring is mounted in a mechanical sealing seat; a groove is formed in the outer ring of the movable sealing ring; a limiting block is arranged in the groove; a spring is arranged on the outer ring of the limiting block in a sleeving mode; the movable sealing ring is pressed towards the static sealing ring through the spring; and a circular arc groove is additionally arranged on the outer ring of the static sealing ring. By adopting the structural design, the inspection and maintenance cost is greatly reduced, the operation stability of equipment is improved, and as the circular arc groove is additionally formed in the outer ring of the mechanical seal static ring, the liquid film thickness of the two end faces is increased, and the lubricating effect is improved.

Description

technical field [0001] The invention relates to the technical field of water pump sealing, in particular to a high-pressure water pump mechanical sealing device. Background technique [0002] High-pressure water pumps are commonly used in delayed coking units of petrochemical enterprises to provide high-pressure water for hydraulic decoking systems. The pump runs intermittently, starting once a day, and the running time is about 2 hours. The start and stop are very frequent, which is not conducive to the operation of the mechanical seal; the average service life of the mechanical seal of the pump is about half a year. Frequent maintenance brings great hidden dangers to production safety and stability, and also increases maintenance costs. According to the previous maintenance data, the average operating life of the mechanical seal is about 800h; the main failure mode of the seal is the wear or rupture of the dynamic and static rings, and annular grooves or radial cracks app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/12
CPCF04D29/126
Inventor 林文清
Owner GAOYOU GAONONG MACHINERY FITTINGS
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