Alternating current and direct-current oil pump switching system with lubricating oil system capable of considering dual redundancy

Abstract

The invention provides an alternating current and direct-current oil pump switching system with a lubricating oil system capable of considering dual redundancy. On the basis of the existing total electric pump scheme, a key element adopts the redundancy configuration, a local pressure control chain loop is added, and one pressure signal is output to the local control loop. At the same time, a "unit operation" signal and a "unit stop" signal are added in the local pressure control chain loop and a self-holding loop is adopted to ensure the direct-current oil pump is able to be stopped in a longway. The problem that the existing alternating current and direct-current oil pump switching schemes is not able to be switched normally under the condition of DCS failure is overcome. The alternating current and direct-current oil pump is safe and reliable in switching, and convenient to operate and maintain.

Description

technical field [0001] The invention relates to an AC / DC oil pump switching system of a lubricating oil system considering double redundancy. Background technique [0002] With the advancement of motor manufacturing technology and electronic technology, AC and DC motors can meet the requirements of quick start and stop, the safety and availability of electric oil pumps are reliably guaranteed, and the all-electric pump oil supply system has emerged as the times require. The all-electric pump oil supply system has no main engine power loss, which greatly improves the operating efficiency of the turbo-generator set; the system structure is simple, and the oil supply system equipment is all packaged; the motor has high efficiency and has a high impact on the rapid and safe start and stop of the motor Require. The scheme quickly became the mainstream design scheme in the world. [0003] At present, the all-electric pump oil supply system has been successfully applied to Shangh...

AI Technical Summary

Problems solved by technology

If there is a DCS failure, it will cause the signal of the DC oil pump to fail to be fed back in time, resulting in serious accidents such as oil cut-off in the lubricating oil system

At the same time, the configuration of key components such as pressure switches and control circuit relays in the existing all-electric pump solution does not consider dual redundancy. Once a component fails, the signal will not be transmitted in time.

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