Oil-submersible linear motor

Abstract

The invention discloses a submersible linear motor, comprising a stator and a rotor which carries out linear motion in the stator; the stator comprises a stator internal pipe, a stator external pipe which is sheathed outside the stator internal pipe and a plurality of silicon steel rings and coils which are arranged between the stator external pipe and the stator internal pipe in axial array; thesubmersible linear motor also comprises at least a joint which is arranged at the ends of the stator external pipe and the stator internal pipe; the connection between the joint and the stator external pipe and connection between the joint and the stator internal pipe are respectively provided with a sealing ring; the joint is closely matched with the stator external pipe and the stator internal pipe so as to form a sealing chamber; the submersible linear motor works under oil wells and is connected with an oil pump. In the submersible linear motor, the joint is closely matched with the stator internal pipe and the stator external pipe by the sealing ring and forms a sealed chamber together with the stator internal pipe and the stator external pipe, thus ensuring the sealing performance of elements which are arranged between the stator internal pipe and the stator external pipe and blocking the entrance of the external oil, water and the like.

Description

technical field [0001] The invention relates to an oil submersible linear motor, in particular to an oil submersible linear motor used for working in an oil well. Background technique [0002] Known oil pumping equipment mainly is beam pumping unit-oil well pump device, and whole set of equipment is divided into ground, downhole and the middle part of contacting ground and downhole, but it all is mechanical oil recovery. Due to the complex and changeable oil well production conditions, with the continuous increase of well depth and production, the disadvantages of this pumping unit, such as heavy weight and frequent accidents, become very obvious. The disadvantages are as follows: [0003] 1. High energy consumption: Due to the complex mechanical structure of traditional mechanical oil recovery, the power factor of the system is very low, generally between 20% and 50%; There is an elastic deformation of about 0.6-1.2 meters, which seriously affects the system efficiency. ...

AI Technical Summary

Problems solved by technology

[0003] 1. High energy consumption: Due to the complex mechanical structure of traditional mechanical oil recovery, the power factor of the system is very low, generally between 20% and 50%; There is an elastic deformation of about 0.6-1.2 meters, which seriously affects the system efficiency

[0004] 2. Eccentric wear is easy to occur: since the well depth of most oil fields is more than 1,000 meters, when the sucker rod is worn off, it seriously affects the reliability of the system

[0005] 3. It is not environmentally friendly and has a lot of noise; during offshore oil extraction, due to the leakage of crude oil, it will cause crude oil to pollute the ocean

[0006] 4. The system is complex: the main modules of the system are separated, the system coordination is poor, and it is inconvenient to control together

[0012] However, there are many requirements for the stator of the oil-submersible linear motor to use the oil-submersible linear motor: first, sealing measures are required, such as the oil-submersible linear motor working under the oil well, the inside of the stator cannot seep into water, oil, etc. sundries, otherwise the energized coil parts in the stator cannot work normally and even damage the motor

Images