Steam failure resistant test device and method for engine cooling water pump bearing with shaft

Abstract

The invention discloses a steam failure resistant test method for an engine cooling water pump bearing with a shaft. Atest device comprises an engine cooling water pump, a pipeline and an electronic peristaltic pump. The cooling water pump is driven by a driving device to continuously rotate at high speed, one end of a pipeline feeding device is connected with a water leaking hole of the cooling water pump, the other end of the pipeline feeding device is connected with a distilled water bottle, the peristaltic pump is designed in the middle of the pipeline, and water feeding amount of the pipeline and water dripping speed are controlled accurately. The pipeline controls the amount of the distilled water dripping on the cooling water pump bearing with the shaft through the feeding device, the bearing with the shaft rotates at high speed to generate heat so that the distilled water is vaporized to form steam, the continuously formed steam surrounds the bearing, and the test of thesteam failure resistantprocessof the cooling water pump bearing with the shaft is implemented. The device is simple and reasonable in structure and good in using performance, the feeding amount of the distilled water in the pipeline can be controlled well so as to guarantee that the test of the cooling water pump bearing with the shaft is carried out at a certain temperature under a steam surrounding state in a high-speed rotating process.

Description

technical field [0001] The invention belongs to the technical field of automobile engine water cooling tests, and in particular relates to a steam failure resistance test device and method for engine cooling water pump shaft-connected bearings. technical background [0002] The engine cooling water pump shaft-connected bearing steam failure test device and method is that when the cooling water pump rotates normally on the engine, the belt pulley drives the shaft-connected bearing to rotate, and the shaft-connected bearing rotates to drive the water seal device to rotate. Due to the structure of the water seal device itself, In the water seal device, the moving ring surface and the static ring surface rub against each other at zero distance to achieve sealing. During the friction process, a large amount of heat will be generated to increase the temperature of the moving and static rings. At high temperatures, a small amount of steam will form in the engine coolant. A small am...

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Problems solved by technology

[0002] The engine cooling water pump shaft-connected bearing steam failure test device and method is that when the cooling water pump rotates normally on the engine, the belt pulley drives the shaft-connected bearing to rotate, and the shaft-connected bearing rotates to drive the water seal device to rotate. Due to the structure of the water seal device itself, In the water seal device, the moving ring surface and the static ring surface rub against each other at zero distance to achieve sealing. During the friction process, a large amount of heat will be generated to increase the temperature of the moving and static rings. At high temperatures, a small amount of steam will form in the engine coolant. A small amount of the formed steam will enter the water seal chamber. If it cannot be discharged naturally from the pump body, it will affect the shaft-connected bearing. Part of the steam will enter the inside of the bearing through the gap between the end-face sealing cover of the shaft-connected bearing, causing rust and failure of the parts. , so that the shaft bearing fails

The general test cannot accurately control the amount of water dripped on the shaft-connected bearing and the amount of steam formed. This method can well control the feed rate of the pipeline and the amount of steam formed. Resistance to steam failure test

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