Flexible electric heating sucker rod
A sucker rod and electric heating technology, which is applied in the direction of drill pipe, heating element shape, isolation device, etc., can solve the problems such as the increase of resistivity, and achieve the effects of reducing failure frequency, high overall strength and wide application range
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[0026] The present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0027] Such as figure 1 , figure 2 A kind of flexible electric heating sucker rod is shown, the center is the heating copper core wire 11, the outer layer is the steel wire rope layer 13, and the insulation layer 12 is between the steel wire rope layer 13 and the heating copper core wire 11, at the end of the flexible electric heating sucker rod A rigid connector 4 is provided. The rigid connector 4 can be connected to the pump piston or the weighted electric heating rod 2. The rigid connector 4 can perform reliable connection, conduction and sealing, and the flexible electric heating sucker rod can be Cut any length as needed.
[0028] The distribution power supply of the flexible electric heating sucker rod of the present invention can adopt an IGBT frequency conversion system, such as Picture 9 As shown, the intermediate frequency isolation transfo...
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