Anti-misoperation starting safe locking mechanism of high-oil-pressure jacking device

Abstract

The invention discloses an anti-misoperation starting safe locking mechanism of a high-oil-pressure jacking device. The anti-misoperation starting safe locking mechanism comprises an oil taking pipe,wherein the oil taking pipe is sequentially connected with a high-pressure oil pump and an oil supply pipe, the oil supply pipe is sequentially connected with an overflow pipe and a duplex filter, andthe overflow pipe is positioned between the duplex filter and the high-pressure oil pump; the anti-misoperation starting safe locking mechanism further comprises a control box, a starting control loop connected with the high-pressure oil pump is arranged inside the control box, an oil inlet valve is arranged at an inlet of the oil taking pipe, an outlet valve is arranged at an outlet of the oil supply pipe, and an overflow valve is arranged at an outlet end of the overflow pipe; a valve locking device is arranged on the oil inlet valve, the outlet valve and the overflow valve, a locking key is arranged on the valve locking device, and a starting switch and an electric locking device which are connected in series are arranged on the starting control loop. The anti-misoperation starting safe locking mechanism further comprises a key replacement box arranged on the side face of the control box, and the key replacement box is provided with a starting unlocking key. The anti-misoperation starting safe locking mechanism has the characteristics of being capable of protecting an oil pump of the high-pressure oil jacking device.

Description

technical field [0001] The invention relates to a high oil pressure jacking device, in particular to a safety locking mechanism for preventing false start of the high oil pressure jacking device. Background technique [0002] The thrust bearing of the hydroelectric generator set is used to bear the weight and axial water thrust of all rotating parts (including turbine and generator) of the vertical hydroelectric unit, and the horizontal unit bears the forward and reverse hydraulic thrust. Thrust bearings are mainly composed of thrust head, mirror plate, bearing bush and support. Thrust bearings are lubricated by an oil film formed in the space between the pads. When starting up, the thickness of the oil film between the thrust pad and the mirror plate of the thrust bearing will gradually increase with the increase of the rotating speed until it reaches the design oil film thickness; The design thickness at the rotating speed decreases gradually when the rotating speed of t...

AI Technical Summary

Problems solved by technology

However, in the actual use process, due to the influence of human operation factors, when the high-pressure oil jacking device is started, the oil supply valve and the overflow valve are still in the closed position, and the high-pressure oil jacking device is established. There is nowhere to release the pressure, resulting in excessive oil pressure of the high-pressure oil jacking device, which exceeds the rated value, and damages the oil pump of the high-pressure oil jacking device

Therefore, there is the problem that the oil pump of the high-pressure oil jacking device is easily damaged in the prior art

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