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Large-drill super-intelligent energy storage device and method

An energy storage device and intelligent technology, applied in the direction of circuit devices, battery circuit devices, output power conversion devices, etc., can solve problems such as waste of energy, bus interference, etc., and achieve the effects of reducing noise, reducing maintenance costs, and eliminating pollution

Pending Publication Date: 2020-04-07
TIANJIN MINGYE OILFIELD TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found the following technical problem: During the lowering process of the drilling drawworks, due to the passive rotation of the motor, a corresponding current is generated, which will cause corresponding interference to the busbar
At present, braking resistors and braking units are usually used to discharge the excess energy of the winch, which not only wastes energy, but also requires additional corresponding braking resistors and other components to discharge the excess energy.

Method used

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  • Large-drill super-intelligent energy storage device and method
  • Large-drill super-intelligent energy storage device and method

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Embodiment 1

[0041] figure 1 It is a schematic diagram of the circuit structure of the Dazuan super-intelligent energy storage device provided by the first embodiment of the present invention. figure 1 It can be seen that the Dazuan super intelligent energy storage device includes:

[0042] The DC / DC conversion unit is electrically connected to the positive and negative ends of the DC bus, and is used to convert the high voltage generated when the big drill is lowered into a low voltage, and send electrical energy to the energy storage unit. Storage, and discharge the electric energy released by the energy storage unit to the DC bus during discharge;

[0043] A choke coil, the first end of the choke coil is electrically connected to the positive output end of the DC / DC conversion unit for removing ripple and balancing current;

[0044] An energy storage unit, one end of the energy storage unit is electrically connected to the second end of the choke coil, and the other end of the energy storage u...

Embodiment 2

[0062] figure 2 It is a schematic flow chart of the Big Drill super-intelligent energy storage method provided in the second embodiment of the present invention. The method is implemented by relying on the Big Drill super-intelligent energy storage device provided in the foregoing embodiment. It includes the following steps:

[0063] S110: When the drilling drawworks is lowered, the voltage of the DC bus is detected, and when the voltage of the DC bus is greater than the charging threshold, the DC / DC conversion unit is controlled to charge the energy storage unit.

[0064] When the drilling drawworks is lowered, since the drill bit drives the motor to rotate, the gravitational potential energy is converted into corresponding electrical energy. The electrical energy can be input to the DC bus through the rectifier unit. When determining that the winch is lowered, the voltage detection unit detects the voltage of the DC bus. When the voltage is greater than the charging threshold, ...

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Abstract

The invention provides a large-drill super intelligent energy storage device and method. The device comprises: a DC / DC conversion unit which is electrically connected with a positive end and a negative end of a direct-current bus and used for converting high voltage of the direct-current bus into low voltage, sending electric energy into an energy storage unit for storage and discharging the electric energy released by the energy storage unit to the direct-current bus during discharging; a choking coil lpi, wherein one end of the choking coil lpi is electrically connected with the positive output end of the DC / DC conversion unit, the choking coil lpi is used for removing ripples and balancing current, and the other end of the choking coil lpi is electrically connected with one end of the energy storage unit; and an energy storage unit, wherein one end of the energy storage unit is electrically connected with the second end of the choking coil, the other end of the energy storage unit is electrically connected with the negative end of the DC / DC conversion unit, and the energy storage unit is used for storing electric energy generated when the drilling winch descends and supplying power to a direct-current bus when the drilling winch ascends. Pollution can be eliminated, and energy is saved.

Description

Technical field [0001] The invention belongs to the technical field of power equipment, and in particular relates to a large drill super intelligent energy storage device and method. Background technique [0002] The drilling drawworks is not only used to run the drilling tool and casing, but also to control the weight on bit during the drilling process and to lift the overall derrick. [0003] The drawworks must have sufficient power to lift the heaviest drill string and release the jam. Usually its energy is provided by the DC bus. [0004] In the process of realizing the present invention, the inventor found the following technical problem: in the process of lowering the drilling drawworks, due to the passive rotation of the motor, corresponding current is generated, which will cause corresponding interference to the bus. At present, the braking resistor and braking unit are usually used to discharge the excess energy of the winch, which not only wastes energy, but also needs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02J7/34
CPCH02M3/158H02J7/345
Inventor 胡顺亮杨其林代新民段红鑫
Owner TIANJIN MINGYE OILFIELD TECH DEV