A horizontal high-speed roller cone bit bearing screw seal test device

Abstract

The invention discloses a horizontal high-speed roller cone bit bearing spiral sealing test device, which comprises a shaft, a spiral bushing and a cone, the spiral bushing is threadedly connected with the cone, the inner diameter of the spiral bushing is provided with a sealing thread, and the spiral bushing Both the cone and the cone are set on the shaft, and a sealed first cavity is formed between the helical bushing, the cone and the shaft. The shaft has a first through hole, a second through hole and a third through hole, and the first through hole is connected to the second through hole. A cavity is connected, and there is an axial gap between the helical sleeve and the cone and the shaft to form a second cavity. The first cavity is connected to the second cavity, and the second through hole and the third through hole are connected to the shaft. The second cavities are connected. The test device of the present invention simulates the spiral seal structure of the roller cone bit bearing. The cone drives the spiral shaft sleeve to rotate. The sand discharge performance of the spiral seal can be tested by measuring the discharge time of the sand-containing liquid and the discharge amount of the sand-containing liquid. The smooth production and application of sealing products provides a guarantee.

Description

Technical field [0001] The invention relates to the field of drilling engineering machinery, in particular to a horizontal high-speed roller cone bit bearing screw seal test device. Background technique [0002] The roller cone bit is the most important rock breaking tool in drilling engineering. It plays a leading role in the bottom hole breaking rock. Its working performance directly affects the drilling quality, drilling efficiency and drilling cost. The service life of the roller cone bit is almost directly It depends on the life of the drill bearing, and the life of the bearing largely depends on the life of the seal. The current development trend of roller cone bits is to achieve high speed. With the continuous increase of the speed of the bit, the weakness of the bearing seal that works in harsh environments will become more and more prominent. Therefore, while studying the drill bit, the research and improvement of bearing life must not be ignored. The bearing seal is t...

AI Technical Summary

Problems solved by technology

At present, the test device for the helical sealing of high-speed roller cone bits has not yet been involved. Experimental research is the premise guarantee for the smooth progress of field tests and product applications, and the test device is the key to determining the success of the test research. The development of the sealing test device is of great significance to improve the life of the drill bit

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