上海慕帆动力科技有限公司

Flow path optimization

In response to the low flow efficiency of domestic blast furnace gas residual pressure turbines, advanced turbine optimization technology from Germany is introduced to provide a complete set of TRT flow efficiency improvement solutions, solving the pain points of users in actual TRT operation.

Analysis of the reasons for low flow efficiency of domestic TRT units

The aerodynamic design of vanes and blades is relatively backward, and there are many problems in the distribution of airflow: Unreasonable distribution of speed and angle, separated flow and backward profile; the stagnation point of the second stage blade deviates from the leading edge and is located at the front of the pressure surface; There is significant loss of attack angle; The high-speed areas of the suction surface increase the flow loss; There are obvious flow separation phenomena on the suction surface of the first and second stage blades, resulting in vortex losses and unstable internal flow fields
The above reasons have resulted in low flow efficiency and urgently require optimization and transformation.

Advanced turbine efficiency raising optimization techniques

Advanced aerodynamic,structural strength optimization design process of turbine
Advanced aerodynamic optimization design techniques

Advanced Rotodynamic Design and Strength Verification Techniques

Check TRT rotor dynamics design and strength design, blade stress analysis; Blade frequency and vibration analysis; Blade root section stress analysis. Keep the original static blades adjustable, optimize the regulation characteristics, and better participate in the top pressure stabilizing control.

Blade material upgrade

For TRT units with high dust content and short life due to severe blade corrosion, material upgrade and special ceramic coating process measures are adopted. Blade material upgrade, all moving and stationary blades upgraded to 17-4PH (0Cr17Ni4Cu4NB).

0Cr17Ni4Cu4NB is a precipitation hardened Martensitic stainless steel composed of copper, niobium/columbium, with high strength, hardness and good corrosion resistance. After heat treatment, the mechanical properties of the product are more perfect, with tensile strength up to 890~1030 N/mm ², good corrosion resistance to acids or salts, and better performance than 2Cr13.

For some TRT models with broken blades, the problem of broken blades is effectively solved by blade redesign and material upgrades.

Blast Furnace TRT Online Energy Efficiency Management Intelligent System (TELM+System)

It is able to analyze the energy efficiency index of gas turbine on line and in real time, while producing a large amount of data for the operation. Through the system intelligent algorithm and the expert system, the operation optimization suggestions are given to make the unit operate in a higher efficiency point region. For blade dust accumulation and blade erosion corrosion, the degree of blade dust accumulation and blade erosion are given by artificial intelligence through an embedded intelligent prediction module, which provides a scientific basis for taking corresponding measures.

Scientific Real time monitoring of crew status

Security Not participating in crew control

Imtegrity Historical operational data display

Intelligent Automatic generation of work logs

Modification scope

The scope of modification includes:: Rotor (with moving blades); Stationary blade; Cylinder support; Inlet and exhaust guide ring (diffuser); The Other structures and systems of the TRT remain unchanged

Transformation benefit

The following benefits are gained through core components replacement and modification

The TRT unit performance was substantially improved,with an average 10% increase in power generation at the design point.

Improve off design operation (partial load versus peak load) performance.

Extended TRT blade life, extended overhaul interval, and reduced overhaul tworkload.

Resolve problems such as broken blades,high vibration ,etc.improving unit safety and availability.