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Lip seal ring and its plug valve

A technology of lip seal ring and plug valve, which is applied in the direction of engine seal, cock including cut-off device, valve device, etc. Effect

Active Publication Date: 2019-12-10
广汉川油井控装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional lip seals are not able to fit and seal from flat to flat

Method used

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  • Lip seal ring and its plug valve
  • Lip seal ring and its plug valve
  • Lip seal ring and its plug valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Lip seal ring, its structure is as follows figure 1 As shown, it includes an annular seal ring body A, the lip A1 of the lip seal ring is located on the two sides a of the seal ring body A, and a lip A2 opening toward the outer diameter side c of the seal ring body A is formed between the two lips A1.

[0038] In another embodiment, based on figure 1 The structure of the lip seal ring, the lip A2 is equipped with a support ring A3, such as figure 2 shown.

Embodiment 2

[0040] Plug valve of the present invention, its structure is as image 3 As shown, including valve body 1, lower valve seat 3, valve core 4, upper valve seat 8 and valve stem 5; lower valve seat 3, valve core 4, upper valve seat 8 pass through the end of upper valve seat 8 (valve body 1 Inside) the split buckle 11, buckle 12 and retaining ring 13 are positioned and assembled in the valve body 1. In addition, the valve stem 5 is assembled on the valve core 4 by means of an adapted keyway and key. One end of the valve body 1 is a male buckle 14, and the other end is a female buckle 15 to connect the nozzle. In this embodiment, the male buckle 14 is located at the end of the lower valve seat 3, and the female buckle 15 is located at the end of the upper valve seat 8. .

[0041] In the plug valve of the present invention, a first sealing member 2 is arranged between the lower valve seat 3 and the assembly surface of the valve body 1. In the present invention, the first sealing m...

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Abstract

The invention discloses a lip-shaped sealing ring and a plug valve thereof and belongs to the technical field of drilling devices. The lip-shaped sealing ring comprises an annular sealing ring body. The lips of the lip-shaped sealing ring are located on the two side faces of the sealing ring body, and a lip opening facing the external diameter of the sealing body is formed between the two lips; the plug valve comprises a lower valve seat, an upper valve seat, a valve core and a valve rod which are assembled in a valve body in a matched mode, a first sealing piece is arranged between the lower valve seat and the valve body, and a second sealing piece is arranged between the valve rod and the valve body; and a third sealing piece is arranged between the upper valve seat and the valve body, and the first sealing piece is the lip-shaped sealing ring and arranged between the end surface of the lower valve seat and the end surface of the valve body. According to the lip-shaped sealing ring, sealing between panels can be achieved, the plug valve is simple in structure, and the problem that drilling operation is influenced by the condition that a traditional square drilling rod plug valve is large in opening difficulty under the high pressure is solved, a low-torque plug valve opened through a single person under the 70 MPa differential pressure can be achieved, and the requirements for markets and production sites are well met.

Description

technical field [0001] The invention relates to a lip-shaped sealing ring and a cock valve using the lip-shaped sealing ring, in particular to a lip-shaped sealing ring and a cock valve structural design for a kelly cock valve with depressing torque, belonging to the technical field of drilling equipment . Background technique [0002] The kelly plug valve is a ball valve structure, and the seal is formed by the steel ball and the cone surface of the valve seat. The function of the kelly cock valve is to prevent the formation pressure from pushing the mud to be ejected upward along the drill string water hole when the formation pressure exceeds the mud hydrostatic column pressure during the drilling process, so as to protect the hose from being suffocated due to high pressure. The use of the kelly cock valve can not only prevent the mud from spraying out from the water hole of the drilling tool, protect the hose from the damage of the formation high pressure, but also play ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/3204F16K5/06F16K5/08
CPCF16J15/3204F16K5/0668F16K5/0689F16K5/08
Inventor 黄勇黄建军冯林林张春林马怡涛王业飞
Owner 广汉川油井控装备有限公司
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