Apparatus for preventing pumping rod disengaging from screw pump

A sucker rod and screw pump technology, which is used in drill pipes, drilling equipment, earthwork drilling and other directions, can solve the problems of the sucker rod not tripping, the screw pump and the sucker rod being easy to trip, etc.

Inactive Publication Date: 2009-07-15
杜洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the phenomenon that the connection between the existing screw pump and the sucker rod is easy to trip, the present invention provides a device for preventing the screw pump from being disconnected from the sucker rod
The device solves the technical problem that the sucker rod rotates in reverse without tripping through the interaction between the key set on the rotating shaft and the Archimedes curve wall set in the barrel.

Method used

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  • Apparatus for preventing pumping rod disengaging from screw pump
  • Apparatus for preventing pumping rod disengaging from screw pump
  • Apparatus for preventing pumping rod disengaging from screw pump

Examples

Experimental program
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Embodiment Construction

[0010] As shown in the figure, the sucker rod rotating shaft 3 is installed in the inner hole 1.1 of the barrel body 1 through the end cover 2, and there is an Archimedes curve wall 1.2 inside, passing through the side of the rotating shaft penetrating into the inner hole of the barrel. Spring 6 is equipped with key 5, is provided with connecting hole 4 on the other side of cylinder body, is provided with connecting hole internal thread 4.1 on the peripheral wall of connecting hole.

[0011] The rotating shaft installed with the key drives the cylinder to rotate along the Archimedes curved wall in the inner hole of the cylinder, and the key is driven by the spring to transmit torque with the cylinder hook under the action of the curved wall. When the rotating shaft rotates in the forward direction, the key is stuck on the lowest part of the Archimedes curve wall, and is hooked to rotate the cylinder to realize the transmission of torque force. When the rotating shaft is revers...

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PUM

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Abstract

The invention provides a device for preventing disengaging of a screw pump and an oil-sucker rod. A rotating shaft of the oil-sucker rod is arranged in a cylinder inner hole of a cylinder body by an end cover and is internally provided with Archimedean curve wall. A key is arranged at one side of the rotating shaft which penetrates through the cylinder inner hole by a spring, and a connecting hole is arranged at the other side of the cylinder body, internal threads of the connecting hole is arranged on a circumferential wall of the connecting hole. As the key arranged on the rotating shaft rotates along the Archimedean curve in the cylinder body, thus realizing the purpose that the normal corotation and contrarotation can not cause disengaging; a mechanism connecting the oil-sucker rod and the screw pump for pumping oil can prevent the oil-sucker rod from dropping off; the device is suitable for oil-pumping device of the screw pump.

Description

technical field [0001] The invention provides an oil production equipment component in the mechanical field, in particular a device for preventing a screw pump from tripping out of a sucker rod. Background technique [0002] Before the present invention was proposed, the sucker rods for screw pumps were directly connected by couplings, and when working normally, they rotated clockwise to transmit torque. When a failure occurs, the sucker rod releases the energy of the rod body and reverses counterclockwise. In the case of high speed, the shackle between the rods will fall off, resulting in the shutdown of the oil well and the need to salvage the components. Contents of the invention [0003] In order to overcome the existing phenomenon that the connection between the screw pump and the sucker rod is easy to trip, the invention provides a device for preventing the screw pump from being disconnected from the sucker rod. The device solves the technical problem that the sucke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/06
Inventor 杜洋
Owner 杜洋
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