Yufeng Power Technology – A professional manufacturer of low-power steam turbine generator sets.

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Classification and Components of Steam Turbines

Classification and Components of Steam Turbines: (1) Classification of Steam Turbines According to their working principle, steam turbines can be categorized into two types: impulse turbines and reaction turbines. According to their thermodynamic characteristics, they can be classified as condensing turbines, back-pressure turbines, extraction turbines, extraction-back-pressure turbines, and multi-pressure turbines. According to the main steam pressure, they can be further classified into low-pressure turbines, medium-pressure turbines, high-pressure turbines, ultra-high-pressure turbines, subcritical-pressure turbines, supercritical-pressure turbines, and ultra-supercritical-pressure turbines. (2) Components of Steam Turbines Power plant steam turbines mainly consist of: steam

Where can I find well-known condensing steam turbines in Shandong?

Shandong Yufeng Power Technology Co., Ltd. is an enterprise reorganized from Zibo Zichai Parts Co., Ltd., which was formerly part of the Zibo Diesel Engine General Corporation. The Zibo Diesel Engine General Corporation is a modern enterprise specializing in the production of high-performance medium-speed diesel engines and low-power steam turbines. In 1970, with approval from the State Planning Commission, the Zibo Diesel Engine Factory was established. In 2003, Zichai Air Conditioning Co., Ltd., Zibo Maite Steam Turbine Co., Ltd., and Zibo Zichai Parts Co., Ltd. were founded, marking the beginning of the company’s development and research into new-energy power generation equipment, as well as low-power steam turbine generator sets and industrial drive steam turbines. In 2018, Zibo Zichai Parts Co., Ltd. was merged and reorganized to establish Shandong Yufeng Power.

Reassembly after turbine maintenance

After maintenance, the steam turbine begins to be reassembled. The reassembly steps are as follows: 1. Clean the lower cylinder of the steam turbine thoroughly, removing all debris and dust. 2. Inspect the lower cylinder for any foreign objects in the vent holes and drain holes. In particular, ensure that the drain holes are completely unobstructed; you can use the water-filling inspection method to verify this. 3. Clean the lower diaphragm bushings outside the cylinder. After cleaning is complete, hoist them into position inside the lower cylinder. 4. Once all the lower diaphragm bushings have been hoisted into the lower cylinder, sequentially hoist in the diaphragms and the front and rear steam seals.

Why is expansion differential protection provided for steam turbines?

During turbine startup, shutdown, and abnormal operating conditions, the rotor often heats up (or cools down) faster than the cylinder, resulting in a differential expansion—commonly referred to as "expansion difference." Whether the expansion difference is positive or negative, once it reaches a certain threshold, the axial stationary and rotating parts of the turbine will come into contact and start rubbing against each other. To prevent excessive expansion differences from causing friction between stationary and rotating components, large-scale units are typically equipped with expansion-difference protection devices. When the positive or negative expansion difference reaches a predetermined value, the protection system will activate, closing the main steam valve and the regulating steam valve to initiate an emergency shutdown.