Turbine capable of maintaining and adjusting turbine guide vane intelligently

Abstract

The invention relates to the field of hydraulic turbines, in particular to a turbine capable of maintaining and adjusting a turbine guide vane intelligently. According to the turbine capable of maintaining and adjusting the turbine guide vane intelligently, various angle-measuring devices are arranged, so that the measured data is more accurate, and a maintenance device capable of adjusting clearance automatically for maintenance is arranged. The turbine capable of maintaining and adjusting the turbine guide vane intelligently comprises a turbine body. The turbine body comprises a main shaft part and a control wheel part. The main shaft part comprises a main shaft, a rotary wheel, a spiral shell, a rotary wheel connecting sealing flange, and a draft tube. The control wheel part comprises acontrol ring, a top cover, a guide blade and a guide blade arm. A top ring piece is arranged on the top portion of the draft tube, the guide blade arm comprises a connecting plate, a guide blade connecting rod and a guide blade shaft, the tail end of the connecting plate is fixed on the control ring, the head end of the connecting plate is hinged to the guide blade connecting rod, the guide bladeconnecting rod is hinged to the guide blade shaft in a downward mode, the guide blade shaft penetrates through the top cover to enable the guide blade to be arranged on the surrounding of the rotarywheel, the guide blade shaft is connected with a top ring piece screw which is arranged on the top portion of the draft tube at the bottom portion of the rotary wheel, and grating detection groups arearranged on the guide blade shaft and the top cover.

Description

technical field [0001] The invention relates to the field of water turbines, in particular to a water turbine for intelligently maintaining and adjusting guide vanes of the water turbine. Background technique [0002] The standard for the clearance of the guide vane facade is that when the guide vanes of the turbine are fully closed, the local clearance within 1 / 4 of the height of the guide vanes is allowed to be no more than 0.10, and the rest of the range is not allowed to pass when inspected with a 0.05mm feeler gauge to reduce the number of turbines. The amount of water leakage when the unit is shut down; the treatment of the prior art 1) The guide vane is bound as a whole with a steel wire rope, which is easy to damage the surface of the guide vane. 2) This method is to distribute the measured large gaps between the guide vanes to the guide vanes adjacent to multiple small gaps one by one when all the guide vanes are in a random and fully closed state. In the case of p...

AI Technical Summary

Problems solved by technology

[0002] The standard for the clearance of the guide vane facade is that when the guide vanes of the turbine are fully closed, the local clearance within 1 / 4 of the height of the guide vanes is allowed to be no more than 0.10, and the rest of the range is not allowed to pass when inspected with a 0.05mm feeler gauge to reduce the number of turbines. The amount of water leakage when the unit is shut down; the treatment of the existing technology 1) Use the steel wire rope to bind the guide vane as a whole, which is easy to damage the surface of the guide vane

2) This method is to distribute the measured large gaps between the guide vanes to the guide vanes adjacent to multiple small gaps one by one when all the guide vanes are in a random and fully closed state. In the case of pressure, the operation is very cumbersome, tiring, laborious and difficult to grasp, and the adjustment quality is difficult to guarantee. Even after the eccentric pin rotates 180°, there is still a squeeze or a large gap in the guide vane gap, and the guide vane needs to be reworked.

3) When the gap value cannot meet the standard, it is forced to replace the connecting rod or grind the sealing surface of the guide vane in a large area to make adjustments, so that the opening value of the guide vane has a large error, leaving the unit running The hidden danger of hydraulic imbalance

The sealing between guide vanes changes from surface contact to line contact, thereby reducing the sealing effect of guide vanes, increasing the water leakage of the unit, and more seriously causing cavitation on the sealing surface of guide vanes

Images