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Bearing pad oil supply device with servo valve

A technology of oil supply device and servo valve, which is applied in the direction of engine lubrication, lubricating oil control valve, engine components, etc., which can solve the problems of inability to meet the requirements of working condition adjustment, the maintenance and operation burden of power plants, and the drift of the setting value of the oil pump outlet flow limiting valve and other issues, to achieve the effect of ensuring reliability, ensuring operation requirements, and preventing impact

Inactive Publication Date: 2017-02-15
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional oil supply devices for bearing pads generally adopt the full-voltage start-up mode of AC motors, and can only output pressure oil quantitatively, which cannot meet the requirements of working conditions.
However, with the increase of running time, the setting value of the oil pump outlet flow limiting valve of the oil supply device will drift, which needs to be adjusted irregularly, which will bring a burden to the maintenance and operation of the power plant

Method used

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  • Bearing pad oil supply device with servo valve
  • Bearing pad oil supply device with servo valve

Examples

Experimental program
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Embodiment Construction

[0013] According to attached figure 1 As shown, all the components of a bearing pad oil supply device with a servo valve are installed in a cabinet body 13 with a closed frame structure, which is helpful for installation and maintenance. The bearing pad oil supply device adopts AC motor oil pump unit 1 and DC oil pump unit 2 as In the main and backup units, the AC motor is given priority in normal application, and the DC motor is started in the case of maintenance or AC failure. Since the initial stage of unit startup requires high pressure to inject lubricating oil into the gap between bearing bushes, the oil port of servo valve 8 will be controlled by The fully open position is gradually closed to prevent the oil pump from starting under pressure to cause impact on the motor and power supply. During the pressure building operation stage, the programmable controller 9 calculates the corresponding oil delivery volume according to the design value and the pressure curve. Feedba...

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Abstract

The present invention discloses a bearing pad oil supply device with a servo valve. The device comprises an AC motor oil pump unit, a DC motor oil pump unit, a one-way valve, an oil filter, a pressure sensor, a flow sensor, an oil outlet main pipe, a servo valve, a programmable controller, a stop valve, an oil inlet main pipe, and a cabinet. The bearing pad oil supply device with a servo valve uses an AC-DC dual-power oil pump system; the inlet main pipe is allowed to communicate with the oil outlet main pipe by means of the servo valve, and the high-accuracy flow sensor and pressure sensor are used to collect operating data, while the programmable controller is used to dynamically regulate the opening of the servo valve, thus meeting the bearing pad oil supply requirements under different operating conditions of the unit.

Description

technical field [0001] The invention relates to a bearing pad oil supply device with a servo valve Background technique [0002] The mass of the rotor of a large hydropower station unit is large, and lubricating oil is required between the bearing pad and the support plate. When the unit is running at the rated speed, the lubricating oil in the oil tank can be brought into the gap between the bearing pads by self-lubricating. During startup and shutdown, because the speed is far lower than the rated speed, the lubricating oil in the oil tank cannot be brought into the gap between the bearing pads by rotation, and dry friction is likely to occur, causing the temperature rise of the bearing pads to be too high and damage the bearing pads. At this time, external inspection is required. Forced oil supply to build a stable oil film. [0003] According to the investigation of the operating unit, for different operating conditions of the unit, the oil supply pressure and flow requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16N7/40F16N23/00
CPCF16N7/40F16N23/00
Inventor 金玉成毛羽波杨威王立贤赵春秀朴秀日
Owner HARBIN ELECTRIC MASCH CO LTD
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