【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】20191021
Thread Content
Question: What are the forces exerted by steam on the moving blades? There are no answers provided for this series of posts; fellow netizens are free to share their own opinions – just reply with what you understand. Replies earn rewards ranging from 5 to 15 points; all forum members are welcome to participate actively and support the development of the forum! ! ! Chemical Equipment and Machinery
The force exerted by steam on the moving blades is divided into an axial force and a circumferential force; both of these forces drive the impeller to rotate and perform work.
Axial force and circumferential force – both of these drive the impeller to rotate and perform work.
The force exerted by steam on the moving blades is divided into an axial force and a circumferential force; both of these forces drive the impeller to rotate and perform work.
The last edit of this post was made by Long’s Love, When Will It Come, on 2019-10-22 at 08:52. The forces exerted by steam on the moving blades include: (1) As the steam flows through the blade passage, it is subjected to forces from the blades: ① the force exerted by the walls of the blade passage on the steam; ② the force exerted on the steam by the pressure difference at the inlet and outlet of the blade passage. (2) The forces exerted by the steam on the blades in return include: ① a circumferential component of force, Fu, acting in the direction of the blade’s movement (this force drives the rotor to rotate and generates rotational work); ② an axial component of force, Fz, perpendicular to the direction of the blade’s movement (this force creates an axial thrust that leads to axial displacement).
The force exerted by steam on the moving blades is divided into an axial force and a circumferential force; both of these forces drive the impeller to rotate and perform work.
The force exerted by steam on the moving blades is divided into an axial force and a circumferential force; both of these forces drive the impeller to rotate and perform work.
The force exerted by steam on the moving blades can actually be broken down into two forces: one is the force FU acting in the circumferential direction, and the other is the force FZ acting in the axial direction. FU is the force that actually drives the rotor to rotate, whereas the axial force FZ acting on the moving blades only generates an axial thrust
1. There are two types of steam turbines: impulse turbines and reaction turbines. 2. Function of the stationary blades: The steam expands within the flow channels formed by the blades, and the energy of the high-temperature, high-pressure gas is converted into kinetic energy. 3. Rotor blades of impulse turbines: The steam does not expand within the rotor blades; it is merely impulsed, with its kinetic energy being transferred to the rotor, thereby causing the turbine rotor to rotate. This rotation, in turn, drives the generator to produce electricity through the coupling. 4. In the case of a reaction turbine, the moving blades are not only impulsed but also experience steam expansion.
The force exerted by steam on the moving blades is divided into an axial force and a circumferential force; both of these forces drive the impeller to rotate and perform work