Sucker rod dual-thread anti-disengagement device

A sucker rod and double-thread technology, which is applied in the field of double-thread locking devices, can solve problems such as slippage and shackles, and achieve the effect of prolonging the use time

Inactive Publication Date: 2017-01-04
SOUTHWEST PETROLEUM UNIV
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a sucker rod double-thread anti-off device, which aims to solve the problem that the connection of the existing su

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
  • Sucker rod dual-thread anti-disengagement device
  • Sucker rod dual-thread anti-disengagement device
  • Sucker rod dual-thread anti-disengagement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Such as Figure 1-6 As shown, among them, figure 1 It is a schematic diagram of the female thread buckle of the sucker rod double-thread anti-off device of the present invention; figure 2 It is a schematic diagram of the male screw buckle of the sucker rod double-thread anti-off device of the present invention; image 3 It is a schematic diagram of the ring cap of the sucker rod double-thread detachment prevention device of the present invention; Figure 4 It is a schematic diagram of the tapered teeth anti-retraction washer of the sucker rod double-thread anti-detachment device of the p...

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 provides a sucker rod dual-thread anti-disengagement device which comprises a male thread buckle, a female thread buckle, a ring cap with oblique conical teeth, a conical tooth anti-retreat gasket and a spring. A thread in the direction opposite to the detaching direction of the female thread buckle is formed in the outer surface of the female thread buckle and matched with the ring cap. The ring cap is installed at one end of the male thread buckle. The ring cap can move up and down on a screw when not buckled. One end of the spring is fixed to a male screw, and the other end of the spring is fixed to the conical tooth anti-retreat gasket. The conical tooth anti-retreat gasket is matched with the oblique bevel teeth at one end of the ring cap. When a sucker rod works and the transverse torque exists, due to the fact that the direction of the thread of the female thread buckle is opposite to the detaching direction of the thread in the outer surface of the female thread buckle, when one thread has unbuckling tendency, the other thread has buckling tendency, and the two threads act on each other and are prevented from being disengaged; the spring and the conical tooth anti-retreat gasket are used for preventing the ring cap from disengagement. The original weight of the sucker rod can not be changed, and the anti-disengagement aim is achieved when the two threads restrain each other.

Description

technical field [0001] The invention belongs to a double-thread anti-off device for sucker rods, in particular to a double-thread locking device. Background technique [0002] The sucker rod used in the rod pumping system is to use the traditional sawtooth thread to transmit the load through the two sections of the collar and the shoulder of the male buckle under the tension of the thread to generate contact friction. Threads are only subjected to axial loads, i.e. forces perpendicular to the thread direction. When used in heavy oil wells or directional wells, the sucker rod will rotate due to the friction between the sucker rod and the heavy oil or the sucker rod and the oil pipe along the circumferential direction of the sucker rod, which will easily cause the thread of the sucker rod The connection strength of the sucker rod is reduced, and the accident of sucker rod breakage occurs, which seriously affects the operation of the sucker rod pumping system. [0003] At pre...

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
IPC IPC(8): E21B17/043
CPCE21B17/043E21B17/0426
Inventor 刘永辉孔浩张杰
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products