【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】201909167
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Question: What is the principle of action and reaction? 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
Steam not only expands and accelerates within the nozzle (with an increased rate of pressure drop), but it also continues to expand and accelerate within the rotor blades, exerting a reaction force on them; it is this force that is used to drive the impeller to rotate and perform work, and this principle is known as the reaction principle
As the steam passes through the moving blades, it expands, resulting in a decrease in pressure and an increase in velocity. The steam exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust exerted by the steam and this reaction force. This principle of using reaction force to do work is called the principle of reaction.
Expansion leads to a decrease in pressure and an increase in velocity; the steam flow exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust from the steam and this reaction force. This principle of using reaction forces to generate work is known as the reaction principle.
The steam not only expands and accelerates within the nozzle, but it continues to expand and accelerate as it flows through the rotor blade channels; that is, within the rotor blade cascade, not only does the direction of the steam flow change, but its relative velocity also increases. Therefore, the moving blades are subjected not only to the thrust from the high-speed steam stream at the nozzle exit but also to the reaction force as the steam leaves the blade row; this is how work is produced by utilizing the principle of reaction.
In reaction turbines, steam not only expands and accelerates in the nozzles, but it continues to expand and accelerate as it flows through the rotor blade passages; that is, within the rotor blade cascade, not only does the direction of the steam flow change, but its relative velocity also increases. Therefore, the moving blades are subjected not only to the thrust from the high-speed steam stream at the nozzle exit but also to the reaction force as the steam leaves the blade row; that is, a reaction turbine utilizes both the impulse principle and the reaction principle to generate power.
As the steam passes through the moving blades, it expands, resulting in a decrease in pressure and an increase in velocity. The steam exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust exerted by the steam and this reaction force. This principle of using reaction force to do work is called the principle of reaction.
As the steam passes through the moving blades, it expands, resulting in a decrease in pressure and an increase in velocity. The steam flow exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust from the steam and this reaction force. This principle of using reaction force to do work is called the principle of reaction.
Steam not only expands and accelerates in the nozzle (with an increased rate of pressure drop), but it also continues to expand and accelerate within the rotor blades, simultaneously exerting a reaction force on those blades. The principle by which this force is utilized to drive the impeller and generate work is known as the reaction principle.
As the steam passes through the moving blades, it expands, resulting in a decrease in pressure and an increase in velocity. The steam exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust exerted by the steam and this reaction force. This principle of using reaction force to do work is called the principle of reaction.
As the steam passes through the moving blades, it expands, resulting in a decrease in pressure and an increase in velocity. The steam exerts a reaction force on the moving blades due to this acceleration, causing the rotor to rotate and perform work as a result of both the thrust exerted by the steam and this reaction force. This principle of using reaction force to do work is called the principle of reaction.