A double redundant lubricating oil system AC and DC oil pump switching system
A technology for switching systems and lubricating oil, which is applied in the direction of engine lubrication, lubricating parts, and general control systems, etc. It can solve the problems of oil cut-off in the lubricating oil system, double redundancy is not considered, and the signal of the DC oil pump cannot be fed back in time. To achieve the effect of safe and reliable switching, convenient operation and maintenance
Active Publication Date: 2019-10-25
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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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.
Method used
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Embodiment Construction
[0012] In order to make the present invention more obvious and understandable, the present invention will be further described with preferred embodiments.
[0013] Such as figure 1 As shown, the present invention provides a double redundant lubricating oil system AC / DC oil pump switching system. The pressure switch of the oil supply main pipe sends two signals to the DCS and the interlocking circuit of the local control cabinet respectively, and the DCS generates two remote signals. One terminal DC lubrication pump start signal and two remote DC lubrication pump stop signals, one DC lubrication pump start signal and one local DC lubrication pump stop signal are generated by the interlocking circuit of the local control cabinet, and two remote DC lubrication pumps start The signal is connected to the input terminal of logic OR gate circuit 1, two remote DC lubrication pump stop signals are connected to the input terminal of logic OR gate circuit 2, one DC lubrication pump start...
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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 a double redundant lubricating oil system AC / DC oil pump switching system. 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 Shanghai Electric's 1000M...
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IPC IPC(8): F16N7/38F16N29/02G05B9/03
CPCF16N7/385F16N29/02G05B9/03G05B2219/24182
Inventor 文耀华阮绵照张静芝邓鸿权吴庆军
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD