What Is a Turbo Flange?
Turbine flange butterfly valve (also known as turbine flange flap valve) generally adopts three eccentric multi-layer metal hard seal structure, and is used in metallurgy, power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines with medium temperature 425 It is used to adjust the flow rate and load the fluid.
Turbine flange butterfly valve
- Chinese name
- Turbine flange butterfly valve
- Foreign name
- Turbine flange butterfly valve
- Also known as
- Turbine flange flap valve
- Adopt
- Three-eccentric multi-layer metal hard seal structure
- is widely used in
- Metallurgy, power, petrochemical, etc.
- Turbine flange butterfly valve (also known as turbine flange flap valve) generally adopts three eccentric multi-layer metal hard seal structure, and is used in metallurgy, power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines with medium temperature 425 It is used to adjust the flow rate and load the fluid.
- Turbine flange butterfly valve (also known as turbine flange flap valve) generally adopts three-eccentric multi-layer metal hard seal structure, and is widely used in metallurgy, power, petrochemical, water supply and drainage and municipal construction industries with medium temperature 425 On the pipeline, it is used to adjust the flow rate and load the fluid. The valve adopts a three-eccentric structure, and the sealing surfaces of the valve seat and the disc are made of different hardness and stainless steel.
- The characteristics of the new high-life turbine stainless steel butterfly valve and the butterfly valve have problems during use. Among the well-known butterfly valve technology, Dissa valve is the most professional and in place. Its sealing form mostly adopts sealing structure. The sealing material is rubber, poly Vinyl fluoride and so on. Due to the limitation of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure, corrosion resistance and wear resistance. A relatively advanced butterfly valve is a three-eccentric metal hard-seal butterfly valve. The valve body and the valve seat are conjoined members. The sealing surface layer of the valve seat is welded with a temperature-resistant and corrosion-resistant alloy material. The multi-layer soft stack type seal ring is fixed on the valve plate. Compared with the traditional butterfly valve, this butterfly valve has high temperature resistance, light operation, no friction during opening and closing, and closes as the torque of the transmission mechanism increases to compensate the seal when closing. The advantages of sealing performance and extended service life. However, the butterfly valve still has the following problems in use: 1. Due to the multilayer soft and hard stacked seal ring fixed on the valve plate, when the valve plate is normally open, the medium will flush the sealing surface of the valve face, and the metal sheet is sandwiched. After being washed, the soft sealing tape in the medium directly affects the sealing performance. 2. Due to the structural conditions, the structure is not suitable for valves with a diameter below DN200, because the overall structure of the valve plate is too thick and the flow resistance is large. 3. Due to the principle of triple eccentric structure, the seal between the sealing surface of the valve plate and the valve seat is based on the torque of the transmission device to press the valve plate towards the valve seat. In the positive flow state, the higher the pressure of the medium, the tighter the seal squeezes. When the medium in the flow channel reverses, as the medium pressure increases, the unit positive pressure between the valve plate and the valve seat is less than the medium pressure, and the seal begins to leak. High performance triple eccentric bidirectional hard seal butterfly valve, [1]
- Turbine flange butterfly valves are classified according to structure (1) center seal butterfly valve (2) single eccentric seal coal valve (3) double eccentric seal butterfly valve (4) triple eccentric seal valve classification according to sealing surface material (1) soft seal butterfly valve. The sealing pair is composed of a non-metal soft material to a non-metal soft material. (2) Metal hard seal butterfly valve. The sealing pair is composed of a metal hard material to a metal hard material.