Method for improving starting speed of seal oil high-pressure back-up gear oil pump of turboset and adopted oiler device
A sealing oil and steam turbine technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of lowering the installation height of the pump, failing to meet the safety of the sealing oil system, and unable to perform maintenance and other problems, and achieve the goal of increasing the speed of operation Effect
Inactive Publication Date: 2015-02-18
大唐桂冠合山发电有限公司
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Problems solved by technology
However, when the sealing oil system is activated due to the low pressure of the sealing oil, the high-pressure standby oil pump of the sealing oil needs to be provided in time to seal the hydrogen and prevent the hydrogen from leaking out. It takes 10 minutes to respond, which cannot meet the safety of the sealing oil system
The conventional way to eliminate hidden dangers is to install the pump inside the main oil tank and lower the installation height of the pump, so as to shorten the vertical distance from the center of the oil pump to the oil surface of the oil tank. However, with this installation method, the unit cannot be inspected and maintained during operation.
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Embodiment Construction
[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] Such as figure 1 As shown, the oil injector 4 used in the present invention to improve the speed of the steam turbine unit seal oil high-pressure backup gear oil pump is welded by the upper cover plate 9, the lower cover plate 12, the cylinder 10, and the annular arrangement nozzle 11, and the annular arrangement nozzle 11 is welded At the lowermost end of the oil suction pipe 5 of the sealed oil high-pressure backup gear oil pump, a through hole with the same diameter as the oil suction pipe 5 is provided in the annular nozzle 11 to retain the original oil absorption effect; the upper cover plate 9 and the lower cover plate 12 are respectively welded on The upper outer side and the lower outer side of the annular arrangement nozzle 11, the cylinder 10 is welded between the upper cover plate 9 and the lower cover plate 12, and the oil suction pipe 5 of the high-...
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The invention discloses a method for improving the starting speed of a seal oil high-pressure back-up gear oil pump of a turboset. According to the method, the inlet end of an oil suction pipe of the seal oil high-pressure back-up gear oil pump, which extends into a main fuel tank of a turbine is provided with an oiler; the oiler is connected with an outlet pipe of an alternating current lubrication pump through an oiling pipe; the oiling pipe is provided with an oiling cut-off valve; when the seal oil high-pressure back-up gear oil pump of the turboset is about to be started, the oiling cut-off valve is opened, pressure oil of the outlet pipe of the alternating current lubrication pump flows to the oiler and is sprayed into the oil suction pipe of the seal oil high-pressure back-up gear oil pump, then the seal oil high-pressure back-up gear oil pump is started, a vent valve is opened, an oil pressure gauge at the outlet of the pump is observed, and when the oil outlet pressure of the pump is more than 1MPa, the vent valve and the oiling cut-off valve are closed. By the method, under the condition of not changing the layout of the pump, the starting speed of the seal oil high-pressure back-up gear oil pump of the turboset is improved.
Description
technical field [0001] The invention relates to the technical field of steam turbines, in particular to a method for increasing the activation speed of a high-pressure standby gear oil pump for sealing oil of a steam turbine unit and an oil injector device used. Background technique [0002] The 670MW steam turbine unit sealing oil high-pressure backup gear oil pump is used to provide the sealing oil system with hydrogen sealing backup oil and to provide pressure oil to the main engine adjustment and security system during start-up. The pump is designed to be installed on the main oil tank. The vertical distance from the center of the oil pump (the center of the connection between the two gears) to the oil surface of the oil tank is 1.5 meters. This height difference makes the oil pump need to be started for 10 minutes to build up a sufficient vacuum before pumping out the pressure oil. However, when the sealing oil system is activated due to the low pressure of the sealing ...
Claims
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IPC IPC(8): F01D25/20F01D25/18
Inventor 廖忠华覃俊挺
Owner 大唐桂冠合山发电有限公司