Energy-saving tower-type oil pumping device

Abstract

The invention discloses an energy-saving tower-type oil pumping device for oil production. A tractor is arranged on a tower and linked with a sucker rod and a balancing weight via a transmission mechanism, the transmission mechanism comprises a traction wheel connected with the tractor, a first combined guide wheel and a second combined guide wheel that are arranged on the tower, the first combined guide wheel consists of a first large guide wheel and a first small guide wheel that are arranged coaxially, the second combined guide wheel consists of a second large guide wheel and a second small guide wheel that are arranged coaxially, a hauling cable is arranged between the tractor and the first large guide wheel, between the tractor and the second large guide wheel, between the first small guide wheel and the sucker rod and between the second small guide wheel and the balancing weight, and the tractor, the first combined guide wheel and the second combined guide wheel are respectivelyfixed and wound by the hauling cable in an overlapping way. In the invention, two groups of the combined guide wheels of which the winding radiuses are variable are adopted to prevent the tractor from doing idle work during ascending, so that the energy saving of the oil pumping device can be really realized, and the sliding of the hauling cable can be avoided due to the winding transmission mechanism.

Description

[0001] technical field [0002] The invention relates to an oil extraction equipment, in particular to a tower type oil pumping unit. [0003] Background technique [0004] At present, in the field of oil exploitation technology, tower pumping units have been widely used. Its common structure is as follows: the traction machine (motor) drives the traction sheave to rotate after being decelerated by the deceleration mechanism, and the traction sheave is wound with a A traction rope, the two ends of the traction rope are respectively connected to the sucker rod and the counterweight. The rotation of the traction machine drives the traction sheave to rotate after being decelerated by the deceleration mechanism to increase the torque, so that the sucker rod is driven up by the traction rope wound on the traction sheave to complete the oil pumping, and the counterweight releases the stored potential energy for Auxiliary lifting of the sucker rod to reduce the starting torque of...

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the problems of low motor efficiency, complex structure of the whole machine, high use and maintenance cost and poor safety existing in the tower pumping unit of the prior art, and provides a motor with high efficiency, simple structure and high safety. Good and low cost tower pumping unit

However, it can be seen from the principle of saving labor and energy in physics that its energy-saving effect is not obvious. The real effect is to reduce the power and cost of the traction machine, and the traction force generated by the counterweight of the above-mentioned transmission mechanism is constant, so It is still unable to solve the problem that the traction machine does useless work during the upstroke of the sucker rod

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