TH26370B - Adjustable nozzle mechanism for variable capacity turbines and manufacturing methods. - Google Patents

Abstract

DC60 turbine with variable capacity with modulation tasks. Change which is simple to Reduce working hours Assembly and modification costs This structure was made Keep it simple to reduce the number Types of parts and the number of parts themselves, reducing the cost of The parts are parts and can Install the nozzle impeller for precision. High without getting The impact of the degree of dimensional accuracy of the multi-link assembly (kick plate) used, which The same number as the number of nozzle shafts to connect multiple nozzle impellers and the nozzle drive assembly, each nozzle shaft is fitted and fixed to the One end of the sheet After setting a predefined positional relationship between the wing angle of the nozzle impeller and the Install a predefined section Which was held down of the ring at the other end of the sheet Each famous sheet was overlapped with Nozzle driven assembly Turbines with variable capacity with modulation tasks Change which is simple to Reduce working hours Assembly and modification costs This structure was made Keep it simple to reduce the number Types of parts and the number of parts themselves, reducing the cost of The parts are parts and can Install the nozzle impeller for precision. High without getting The impact of the degree of dimensional accuracy of the multi-link assembly (kick plate) used, which The same number as the number of nozzle shafts to connect multiple nozzle impellers and the nozzle drive assembly, each nozzle shaft is fitted and fixed to the One end of the sheet After setting a predefined positional relationship between the wing angle of the nozzle impeller and the Install a predefined section Which was held down of the ring at the other end of the sheet Each famous sheet was overlapped with Nozzle driven assembly

Claims (6)

1. An assembly method to assemble a variable nozzle mechanism used in turbines with variable capacity where turbines with The variable capacity consists of several nozzle blades arranged along the circumference of the machine. Turbine and located on the head shaft Injected, which is sustained on the casing. Turbine so that the nozzle blades can rotate and the blade angle can be variable, the nozzle drive assembly that drives the nozzle fan blade, the nozzle drive assembly is made It rotates around the turbine shaft by an actuator and a set of independent turbine rotors for rotating at the internal radial position of the nozzle blades. So that the excitation gas flowing from the reel in the turbine housing and through the nozzle blades can drive the rotation. Turbine Installation and adjustment of each injector shaft to one end of each bellows Sheet after a predetermined positional relationship between the wing angle of the nozzle impeller and The mounting direction of the fixed part of the predetermined bell-plate is set where the coupling holes at one end of the bellows and the coupling shaft at the end of the nozzle shaft are Correlate geometry before installation and adjust the wing angle and rotation angle of the piece link plate. The injector assembly is in a predetermined positional relationship after the Such mounting and modifications and overlapping end-to-end of each ring plate to the accompanying link plate. Nozzles driven 2. Method according to claim 1, where installation and adjustment consist of Creating connection holes in each ring plate Sheet by creating a non-round hole with a stopper face. By making the two opposite surfaces of the holes that are parallel. By creating an oval-shaped hole or by creating a hole With a curved surface on one side The construction of a notched coupling shaft with a mounting surface on the ends of each nozzle shaft whose mounting surface is shaped to correspond to the coupling hole of the bellows for the face. That is a stop Installation of splicing shafts into coupling holes without changing shaft deformation Or coupling holes And overlap the surface of the stop of the connection hole with the mounting surface at Fit the notched coupling shaft pair so that the ring plate and nozzle shaft cannot rotate accordingly. This is because the stop face and the mounting face act as a stop and action for the nozzle shaft and the bell plate using the subtracted portion of the plate. Notched couplings with a larger diameter than the notched coupling to prevent the nozzle shaft from being dropped. Coming out of the coupling hole and removing it from the ring plate 3. Method according to claim 2, whereby the aforementioned operation consists of hammering the tip. Of the coupling shaft notched after overlapping the stop surface of the coupling hole with the face For mounting matching of notched couplings so that the ends of the coupling It overlaps the chamfered part of the kick plate and prevents the nozzle shaft from falling out. Screw splicing and removal from the ring plate 4. Method according to claim 1, where the overlap consists of wearing an input channel. Of the kickstand along the rivet of the driven assembly It is the same number of immobilized as the ring plate, with the rivet protruding from the nozzle drive assembly and spaced the lead direction. The bell and the inlet open in a nearly radial direction with the other end of the bell plate to Overlap with peg 5.Adjustable nozzle mechanism used in turbines with variable capacity. Where the turbine with The variable capacity consists of Several nozzle blades arranged along the circumference of the turbine and located on the head shaft. The spray is sustained on the turbine housing so that the nozzle blades can rotate and the blade angle is variable. Injector drive assembly that drives the nozzle impeller. The nozzle drive assembly is made Rotate around the turbine shaft by an actuator with a link plate and an independent turbine rotor for rotating at the internal radial position of the nozzle blade. So that the excitation gas flowing from the reel in the turbine housing and through the nozzle blades can drive the rotation. Turbine rotor The aforementioned adjustable nozzle mechanism consists of Several bell discs arranged between the nozzle blades and the link plates. By the end One of each bell pad is worn and fixed to the nozzle shaft after setting. Preset positional relationship between wing angle of the nozzle impeller and the direction of their wear The predetermined portion of the section for fixing the label has been set. A coupling hole at one end of the bell disk and said coupling shaft at the end of the The nozzle shaft has a geometric relationship that sets the wing angle and rotation angle of the piece's link plate. The nozzle is driven by a predetermined positional relationship, and the inlet in each bell plate, radially outside, is open at the other end. Of the sling plate and overlap with the peg on the link plate In which the pin had the same number as the ring Protruding from the head drive assembly Spray and spaced in that circumference direction. 6. Mechanism according to claim 5, where the coupling holes and the coupling shaft are not round.