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Tooth-shaped sealing structure for cone bit

A technology of roller cone bit and sealing structure, which is applied in construction and other directions, can solve problems such as sealing failure, and achieve the effects of strengthening stability, improving sealing stability, and high anti-aging endurance

Inactive Publication Date: 2018-09-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a toothed slide with more reliable sealing performance, superior wear resistance and longer service life in order to overcome the problem that the existing single metal sealing device is prone to seal failure in the harsh working conditions of the mine. Ring single metal seal structure

Method used

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  • Tooth-shaped sealing structure for cone bit
  • Tooth-shaped sealing structure for cone bit

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] Depend on figure 1 with figure 2 As shown, the tooth-shaped seal structure for the roller cone bit is mainly composed of a dynamic seal ring 2, a static seal ring 10, a V-shaped retaining ring 9, an O-shaped rubber seal ring 8, a support ring 12 and a tooth palm bearing 1, wherein: The outer end of the inner hole of the cone 3 where the seal ring 2 is located and the root of the palm bearing 1 form a seal cavity, which consists of a dynamic seal ring 2, a static seal ring 10, a V-shaped retaining ring 9, an O-shaped rubber seal ring 8 and The tooth-shaped slip ring single-metal sealing structure 6 composed of the support ring 12 is put into the sealing cavity, the dynamic sealing ring 2 is in interference fit with the inner hole of the cone 3, and the other end of the dynamic sealing ring 2 is in contact with the shoulder of the inner ...

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Abstract

The invention relates to a tooth-shaped sealing structure for a cone bit. The tooth-shaped sealing structure is a rotary dynamic seal with high temperature resistance, wear resistance and vibration resistance. According to the technical scheme, a sealing cavity is formed between the outer end of a cone inner hole where a dynamic sealing ring is located and the root of a tooth palm bearing, and a single metal sealing device consisting of the dynamic sealing ring, a static sealing ring, a V-shaped retaining ring, an O-shaped rubber sealing ring and a supporting ring is placed in the sealing cavity; the dynamic sealing ring is in interference fit with the cone inner hole, the other end of the dynamic sealing ring is in contact with a shoulder of the cone inner hole, and the dynamic sealing ring rotates with a cone; the end faces of the dynamic sealing ring and the static sealing ring are matched to form a relatively rotating sealing surface; and the O-shaped rubber sealing ring and V-shaped retaining ring are compressed in the supporting ring by the static sealing ring.

Description

technical field [0001] The invention relates to a tooth-shaped sealing structure for a roller cone bit, which is widely used in the rotary dynamic sealing of power tools in many fields such as petroleum, mining, and aviation. Background technique [0002] The single metal seal structure is a rotary dynamic seal with high temperature resistance, wear resistance and vibration resistance. It is widely used in petroleum, mining, aviation and many other fields. External mud. The single metal seal structure currently in use consists of an O-shaped rubber ring, a dynamic seal ring, a smooth static seal ring at the top, a supporting rubber ring and a tooth palm bearing. The single metal seal structure will not only be subjected to the elastic force of the O-shaped rubber ring and the supporting rubber ring, but also be subjected to the pressure load of the inner lubricating oil and the outer drilling mud. The seal ring will produce a certain force deformation. At the same time, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/25
CPCE21B10/25
Inventor 韩传军胡洋张杰
Owner SOUTHWEST PETROLEUM UNIV