【Daily Question】August 9: The role of cooling steam for the turbine disc in catalytic cracking flue gas turbines
Thread Content
One daily activity question (single-choice question): The steam used to cool the rotor discs of catalytic cracking gas turbine engines is used to cool the ( ) part of the discs, thereby reducing stress on them and extending their service life. A. Blade B. Blade root C. Rotor D. Guide vane ring Answer: B, Blade root. Everyone is encouraged to participate actively for prizes. +5 points for correct answers, +2 points for participation. One time per person only. Close this topic in two days.
The steam used to cool the rotor disc of a catalytic cracking steam turbine is the steam that cools the ( A、 blades ) of the rotor disc, thereby reducing stress on the disc and extending its service life.
C. Impeller.............................
B, root of leaf--------------------
The steam used to cool the rotor disk of a catalytic cracking steam turbine is the ( C ) part for cooling the rotor disk, thereby reducing stress on it and extending its service life. A. Blade B. Blade root C. Rotor disk D. Guide vane ring
The catalytic cracking flue gas turbine rotor cooling steam is used to cool the (B, root) portion of the rotor, in order to reduce stress on the rotor and extend its service life. A. Blade B. Blade root C. Rotor disk D. Guide vane ring
D. Guide vane ring.................
The steam used to cool the rotor discs of catalytic cracking gas turbine engines is the ( B ) part for cooling these discs, thereby reducing stress on them and extending their service life. A. Blade B. Blade root C. Rotor disk D. Guide vane ring. The functions of steam in protecting the rotor disk are two: 1. Cooling the blade root portion of the rotor disk to reduce its stress. Extend the service life. 2. Prevent catalyst fines from entering the dead zone between the primary and secondary discs, where they can form clumps that stick to the discs and affect dynamic balance. Here, the temperature of the wheel disc after cooling by the smoke extractor is required to be between 280 and 350 degrees Celsius; low-pressure superheated steam is generally used as the steam for protecting the wheel disc. If medium-pressure superheated steam is used instead, comprehensive calculations are required. For example: whether it can meet the operating conditions of the wheel, whether it is more cost-effective, and so on. The above are only what I have encountered; I would appreciate detailed explanations from professionals in this field.
Question (single-choice): The steam used to cool the rotor disk of a catalytic cracking gas turbine cools the ( c) part of the rotor disk, in order to reduce stress on it and extend its service life. A. Blade B. Blade root C. Rotor disk D. Guide vane ring