Inertia variable fly wheel energy storage type well repairing machine

Abstract

The invention relates to a changeable inertia flywheel energy storage type workover rig, which consists of a power unit, a changeable inertia flywheel set, a gear shifting box, an angle drive box, a roller, a rotary disc, and the like. One end of the changeable inertia flywheel set is connected with the power unit, and the other end of the changeable inertia flywheel set is connected with the gear shifting box; the three groups of flywheels can work simultaneously, or one or two of the flywheels work, thereby realizing the changeable inertia of the flywheels. The energy of a power machine is stored by the changeable inertia flywheels during the subsidiary operation period and is provided for lifting a pipe column, thereby reducing the power of the power machine to one fourth of a conventional workover rig. The changeable inertia flywheels are used to store the gravitational potential energy released by the lowering of the pipe column, thereby realizing the recovery and utilization of the energy. The energy storage in a mode of flywheel kinetic energy improves the efficiency. Three power machine flywheel gear positions are provided for lifting the pipe column, thereby improving thepower utilization rate of the power machine. According to the different weight of the lowered pipe columns, the flywheels with different moments of inertia are used to recover the energy, thereby improving the energy recovery rate.

Description

(1) Technical field [0001] The invention relates to well workover equipment in the petroleum and natural gas industries, in particular to a variable inertia flywheel energy storage workover rig. (2) Background technology [0002] One of the most common operations of workover rigs is the operation of raising and lowering pipe strings. The operation of the lifting string is an intermittent cycle process. The workover rig spends about 1 / 4 of the entire lifting cycle, while the time for auxiliary operations such as shackles and placing single strings takes up 3 / 4. Motorized hoisting strings require a power engine to work with high power, while auxiliary operations such as shackles and placement of single pipes require a power machine to work with low power. Conventional workover rigs have relatively large installed power in order to meet the needs of rapid lifting of pipe strings. The high-power power machine works under low power most of the time, the economy is poor, and th...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the energy waste of conventional workover rigs in the operation of lifting and lowering pipe strings, and at the same time overcome the above-mentioned shortcomings of existing hydraulic energy storage petroleum workover rigs, the present invention provides a variable inertia flywheel energy storage type The workover rig can reduce the power of the power machine to 1 / 4 of the conventional workover rig, and can also recover the gravitational potential energy released when the pipe string is lowered. The variable inertia flywheel energy storage technology is used to more effectively lift the pipe string. Use the power of the power machine to improve the energy recovery rate of the gravitational potential energy of the pipe string when the pipe string is lowered

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