【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】20190923
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Question: What is the reaction degree of a turbine? 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 parameter used to measure the degree of expansion of gas within the moving blades is called reaction degree (also known as reaction force). It is defined as Ω = h2s/(h1s* + h2s), where h2s represents the enthalpy drop in the moving blades, h1s* represents the isentropic enthalpy drop in the stationary blades, and Ω denotes the reaction degree of the turbine stage. A stage with zero reaction degree is called an impulse stage, but generally impulse stages have a small amount of reaction degree (0.02–0.15). A stage in which the isentropic enthalpy drop across the stationary and moving blades is equal is known as a reaction stage (Ω=0.5).
The parameter used to measure the degree of expansion of gas within the moving blades is called reaction degree (also known as reaction force). It is defined as Ω = h2s/(h1s* + h2s), where h2s represents the enthalpy drop in the moving blades, h1s* represents the isentropic enthalpy drop in the stationary blades, and Ω denotes the reaction degree of the turbine stage. A stage with zero reaction degree is called an impulse stage, but generally impulse stages have a small amount of reaction degree (0.02–0.15). A stage in which the isentropic enthalpy drop across the stationary and moving blades is equal is known as a reaction stage (Ω=0.5).
Parameter measuring the degree of expansion of gas within the moving blades
Parameter measuring the degree of expansion of gas within the moving blades
Parameter measuring the degree of expansion of gas within the moving blades
Reactivity is the ratio of the degree of steam expansion in the moving blade cascade to the total degree of expansion that should occur in that stage; it can also be expressed as the ratio of the enthalpy drop in the moving blades to the total enthalpy drop in both the stationary and moving blades of that stage
A parameter that measures the degree of expansion of gas within the moving blades.
It is the ratio of the degree of steam expansion in the moving blade cascade to the total degree of expansion required for that stage, or it represents the ratio of the enthalpy drop in the moving blades to the total enthalpy drop in both the stationary and moving blades of that stage. When the reaction degree is 0, it is a pure impulse stage; the reaction degree of what is commonly referred to as a reaction stage is 0.5, and its characteristic is that the degree of expansion of steam in the rotor blades is the same as that in the nozzles.
The so-called reaction degree is the ratio of the extent of steam expansion in the moving blade cascade to the total amount of expansion that should occur in that stage; it can also be expressed as the ratio of the enthalpy drop in the moving blades to the total enthalpy drop in both the stationary and moving blades of that stage.
The parameter used to measure the degree of expansion of gas within the moving blades is called reaction degree (also known as reaction force). It is defined as Ω = h2s/(h1s* + h2s), where h2s represents the enthalpy drop in the moving blades, h1s* represents the isentropic enthalpy drop in the stationary blades, and Ω denotes the reaction degree of the turbine stage. A stage with zero reaction degree is called an impulse stage, but generally impulse stages have a small amount of reaction degree (0.02–0.15). A stage in which the isentropic enthalpy drop across the stationary and moving blades is equal is known as a reaction stage (Ω=0.5).