Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A high-speed roller cone bit bearing spiral combined sealing structure

A roller cone bit and combined sealing technology, which is applied in construction and other directions, can solve problems such as wear, poor sand discharge performance, and low reliability, and achieve the effects of saving space, improving sealing performance, and high reliability

Active Publication Date: 2017-07-28
SOUTHWEST PETROLEUM UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor sand discharge performance, serious wear and low reliability in the existing high-speed roller cone bit bearing sealing structure, and to provide a high-speed roller cone bit bearing spiral combination seal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high-speed roller cone bit bearing spiral combined sealing structure
  • A high-speed roller cone bit bearing spiral combined sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

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

[0013] Such as figure 1 As shown, a high-speed roller cone bit bearing spiral combined sealing structure is composed of a roller cone (2), a bearing (5), a spiral sealing ring (6) and an O-shaped rubber ring (7). The spiral combined sealing structure is installed in the sealing cavity between the bearing (5) and the cone (2).

[0014] Such as figure 2 As shown, the inner hole of the cone (2) is processed with a spiral groove for installing the spiral sealing ring (6); the O-shaped rubber ring (7) is installed in the groove of the bearing (5) through interference fit , so that it is tightly hooped on the bearing and located on the top of the spiral sealing ring (6).

[0015] With reference figure 1 , when this seal is applied in the field, the tooth claw (1) and the cone (2) are respectively socketed on the bearing (5) through the inner hole of the cone, and the ste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high-speed roller cone bit bearing spiral combined sealing structure, which is composed of a roller cone, a bearing, a spiral sealing ring and an O-shaped rubber ring. The spiral sealing ring is installed in the spiral groove of the inner hole of the cone. When the drill bit rotates at high speed, the pumping action of the spiral groove can realize the automatic sand discharge function. At the same time, the pressure on the outside of the O-shaped rubber ring is increased and the O The pressure difference on both sides of the O-shaped rubber ring improves the sealing effect of the O-shaped rubber ring; the O-shaped rubber ring is located on the top of the spiral sealing ring, and is installed in the bearing groove with a certain amount of interference, which is realized when the drill bit rotates at high speed. Auxiliary double-stage sealing can also play an effective sealing role when the drill bit stops rotating. The invention has good sand discharge performance, can effectively reduce bearing wear, can meet sealing requirements in different working conditions, greatly improves the reliability and stability of the seal, and improves the service life of the seal. The seal eliminates the need for additional support elements, saving valuable space in the roller cone bit.

Description

technical field [0001] The invention relates to a high-speed roller cone bit bearing spiral combination seal suitable for oil drilling and geological drilling, and belongs to the field of roller cone bit bearing seals. Background technique [0002] High speed is a new direction for the development of roller cone bits, and the research on long-life high-speed roller cone bits has become a major technical issue that urgently needs to be solved in the world's oil drilling projects. The bearing seal is the key to determine the life of the high-speed roller cone bit, and it is the weakest link of the high-speed roller cone bit. The failure analysis of the roller cone bit shows that as long as one roller cone bearing in the roller cone bit is damaged in advance, the whole bit will fail quickly. Statistical analysis of on-site data shows that the drill bits that fail due to early bearing damage account for 80% of the total number of failed drill bits, and the life of the bearing d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/25
Inventor 周已王林黄志强伍开松张富晓汤海平张浩辰唐宇杰
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com