Multifunctional hydraulic power unit

Abstract

The invention relates to a multifunctional hydraulic power station, which mainly consists of two pump groups, an electric cabinet, a hand-operated direction valve, a check valve, an overflow valve, an energy accumulator, a manual pressure-reduction pressure-regulation overflow valve, a normally-closed solenoid valve, a normally-opened solenoid valve, a stop valve, a high-pressure oil output end and an automatic control device. On the basis that the hydraulic power station has an original function, the defects and the deficiencies of an original hydraulic power station are overcome, and functions, such as free regulation of oil pressure, optimal torque control, energy saving and accumulation, multifunctional changeover, no-load time delay startup and automatic control, which are provided for a load, are increased. The multifunctional hydraulic power station is simple in operating, saves electric energy by more than 50%, can provide hydraulic power for various petroleum drilling tools, is also suitable for other industries to provide hydraulic power for hydraulic tools by taking high-pressure hydraulic oil as mediums, and can achieve the effects of energy saving, energy accumulation and controllable torque.

Description

technical field [0001] The invention relates to oil and gas extraction machinery for oil drilling, in particular to a device providing hydraulic power for oil drilling tools. Background technique [0002] The main function of the hydraulic power station is to provide hydraulic power for oil drilling tools (such as drill pipe power tongs and casing power tongs). A drilling tool is a device that provides string threading for drilling pipe or casing. [0003] The traditional hydraulic power station has a fuel tank-mounted structure as a whole. It is mainly composed of a fuel tank, a pump unit and an electric control box for the pump unit. The pump unit is placed under the fuel tank. The pump unit of this machine is composed of a low-pressure ball valve, a filter, a plunger pump, and a motor connected front and rear, and the motor provides driving power for the plunger pump. Under the control of the start and stop buttons of the electric control box, the pump unit outputs the ...

AI Technical Summary

Problems solved by technology

Even so, it is still unavoidable that the load torque is too large or too small, and it is difficult to ensure the quality of the load—that is, the torque is too large or too small when the drill pipe or casing is unloaded, resulting in a product failure rate High, or even damage—that is, the phenomenon of twisting the string thread due to excessive torque; because the electric control box is controlled by the start-stop button, there are more than 60% of the gap time in the working process (the pump unit is still in the intermittent period) No-load operating conditions), so that the pump unit is always in a non-stop running state, especially in summer, the hydraulic oil temperature is high, not only the waste of electric energy is serious, but also because the hydraulic oil circulates for a long time, the hydraulic oil heats up quickly, poor security

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