Pneumatic butterfly valve can be used in railway locomotives and railway sleeper pads
Pneumatic butterfly valves can be used in many fields, but they are not suitable for all places. So how should we choose appropriate pneumatic butterfly valves? I have sorted out the characteristics of pneumatic butterfly valve and its advantages and disadvantages for you before. Do you remember? It doesn't matter if I don't remember. I will recall a little later, mainly to talk about the application scope of pneumatic butterfly valve.
When selecting pneumatic butterfly valve, we should first understand its characteristics, and then choose the environment. The characteristics of pneumatic butterfly valve are that its shape can be designed as required, its stiffness can be adjusted, its damping ratio is greater than that of ball valve, its shear resistance, tensile resistance, compression resistance, and its device is simpler. Its defects are high natural frequency, short service life, and limited operating environment. The temperature of ordinary operating environment should be controlled between - 30-70 ℃, and some chemical corrosive environments should select pneumatic butterfly valves of suitable materials for use.
At present, the mainstream pneumatic butterfly valves suitable for consumption are: natural rubber, neoprene rubber, butadiene rubber; The market is full of pneumatic butterfly valves based on reclaimed rubber, which are hard to handle without ball valve performance, nonlinear in load compression ratio, rough in appearance, poor in damping effect and easy to age. Remember to choose carefully to prevent the purchase of such pneumatic butterfly valves.
Main application scope of pneumatic butterfly valve:
1. Pneumatic butterfly valve for steam
2. Valve products for railway locomotives and railway sleeper pads
3. Pneumatic butterfly valve for bridge
4. Pneumatic butterfly valve for construction engineering
Because the valve has the above characteristics, it is widely used on the bogie of locomotive running part. The pneumatic butterfly valves used on electric locomotives include central support cone, axle box pull rod elastomer, side bearing stack, motor suspension pad, elastic wheel, elastic gear, air ball valve, transmission mounted bow block and ball hinge, coupler buffer, etc.
The pneumatic butterfly valve applied to the locomotive is mainly used to accept the contraction stress, shear stress and change torque, and simultaneously accept the combined action of two or more stresses. All kinds of pneumatic butterfly valves have certain special performance and play an important role in each other. The speed of the railway locomotive has improved from time to time, and the dynamic effect on the line has increased sharply, causing fierce wear of the line, tire and local components of the locomotive running. Therefore, the application of pneumatic butterfly valve is increasing.
From the above, we can draw a conclusion that we should use different products when using different centers, and different products will produce different effects. But no matter what products we use, we should fully understand the characteristics of the products in the early stage. As long as we choose the right products and use the right center, the products can really serve us.