Electric driving system of double-system petroleum drilling machine

An electric drive system and drive system technology, applied in control systems, rotary drilling rigs, percussion drilling, etc., can solve problems such as high cost, low degree of automation, and narrow speed regulation range, and achieve low maintenance costs and guarantee The effect of safe drilling operation and excellent control performance

Pending Publication Date: 2021-10-19
SICHUAN HONGHUA ELECTRIC
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  • Application Information

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Problems solved by technology

The present invention adopts a dual-mode electric drive system, combines the respective advantages of the DC drive system and the AC drive system, and solves the problem of low power factor, narrow speed regulation range, low degree of auto

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  • Electric driving system of double-system petroleum drilling machine

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[0030] In order to understand the technical features, objects and effects of the present invention, specific embodiments of the present invention will be described with reference to the drawings.

[0031] In this embodiment, if figure 1 As shown, a dual petroleum drilling electromechanical drive system includes three-phase AC bus, DC drive system, and AC drive system; three-wire alternating bus output, connected DC drive system and AC drive system; three-phase AC bus output AC power supply voltage It is 525VAC-690VAC with a frequency of 50 Hz or 60Hz.

[0032] The direct current drive system includes a plurality of DC speed speed control units, and the output of each DC speed control unit is connected to a mud pump DC motor; the DC speed speed control unit is a thyristor, a thyristor DC speed speed unit AC rectifies 525VAC-690VAC three-phase AC To adjust the DC motor, respectively, the corresponding DC motor is driven separately.

[0033] The alternating current drive system inclu...

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Abstract

The invention discloses an electric driving system of a double-system petroleum drilling machine. The electric driving system comprises a three-phase alternating current bus, a direct current driving system and an alternating current driving system; the output ends of the three-wire alternating-current bus are connected with the direct current driving system and the alternating current driving system; the direct current driving system comprises a plurality of direct current speed regulation units; and the alternating current driving system comprises a plurality of rectifying units, a plurality of alternating current frequency conversion units and a plurality of energy consumption braking units. According to the electric driving system of the double-system petroleum drilling machine of the invention, the advantages of the direct current driving system and the alternating current driving system are combined; and the problems that the direct current driving system is low in power factor, narrow in speed regulation range and the like are solved, the situation that the alternating current driving system is high in cost is comprehensively considered, and the technical economy of the drilling machine is optimal.

Description

technical field [0001] The invention relates to the technical field of electric drive for oil drilling rigs, in particular to an electric drive system for dual-system oil drilling rigs. Background technique [0002] At present, electric drilling rigs (hereinafter referred to as drilling rigs) are mainly used for oil and gas development, and the electric drive system of drilling rigs is mainly divided into DC drive system and AC drive system. Both electric drive systems have their own defects: [0003] 1. Compared with the AC drive system, the DC drive system has the following defects and deficiencies: [0004] (1) The DC drive system cannot realize the auxiliary braking function, and it is necessary to configure an auxiliary braking device, such as an electromagnetic brake. The AC drive system has the function of energy consumption braking, which can realize auxiliary braking, which is safer and more reliable; since there is no need to install electromagnetic brakes or pneu...

Claims

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Application Information

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IPC IPC(8): H02P5/60H02P27/06H02P3/22E21B3/02E21B3/04H02J3/02
CPCE21B3/022E21B3/04H02P5/60H02P27/06H02P3/22H02J3/02
Inventor 王亮鲜涛黄鲲鹏谢伟刘顺洋郑光杰
Owner SICHUAN HONGHUA ELECTRIC
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