Lifting hydraulic system of petroleum drilling machine

A hydraulic system and drilling rig technology, which is applied to fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., and can solve problems such as low work efficiency and complicated operation

Pending Publication Date: 2021-09-07
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, this control method requires technicians to control the motor or brake action according to different working conditions t...

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  • Lifting hydraulic system of petroleum drilling machine
  • Lifting hydraulic system of petroleum drilling machine

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Embodiment Construction

[0025] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0026] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those having ordinary skill in the art to which the present disclosure belongs. "First", "second", "third" and similar words used in the specification and claims of this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components . Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "comprises" or "comprising" and similar terms mean that the elements or items listed before "comprising" or "comprising" include the elements or items listed after "comprising" or "comprising" a...

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Abstract

The invention provides a lifting hydraulic system of a petroleum drilling machine. The lifting hydraulic system comprises a pump set, a motor assembly, a brake module, a three-position four-way valve and oil tanks. The pump set comprises a variable pump, a pump control module and a control pump, the variable pump controls the motor assembly to act, and the pump control module can control the displacement of the variable pump to be increased or decreased. The brake module is provided with a first control port and a second control port, and the brake module applies or does not apply braking force to the motor assembly. The three-position four-way valve has a first state, a second state and a third state, and the lifting system can be controlled to complete the lifting speed change function and the braking function by switching the three-position four-way valve to different states. The lifting control operation of the petroleum drilling machine can be simplified, and the working efficiency of the lifting system is improved.

Description

technical field [0001] The present disclosure relates to the technical field of hydraulic control, in particular to a lifting hydraulic system of an oil drilling rig. Background technique [0002] There is an increasing demand for the development of marine energy. Offshore drilling platforms are indispensable equipment for obtaining offshore oil and gas resources. Oil drilling rigs are important devices for offshore drilling platforms in oil drilling. Oil drilling rigs are used to drive drilling in drilling. It is used to break rocks, drill into the ground, and drill a wellbore with a specified depth for oil or gas extraction machines to obtain oil or natural gas. [0003] In related technologies, the lifting system of an oil drilling rig is usually a mechanical mechanism. For example, a motor drives a meshed gear and a rack to move to realize the lifting and lowering functions of the drilling tool. The variable speed control and braking of the drilling tool are realized by ...

Claims

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Application Information

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IPC IPC(8): F15B11/044F15B11/08F15B13/02F15B21/08
CPCF15B11/044F15B11/08F15B13/021F15B21/087
Inventor 刘利明方敏阮长松刘杰
Owner WUHAN MARINE MACHINERY PLANT
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