Problems in the design of high temperature gear pump

High-temperature gear pump design should pay attention to the problem 1. According to the actual use of working conditions to determine the pressure difference between the inlet and outlet steam oligohydraulic valve. The inlet pressure of the steam osmometer valve is the low working pressure at the steam oligopheresis inlet due to the fluctuation of the steam pressure or the throttling of the temperature regulating valve; the outlet pressure of the steam loosing oil valve refers to the possible formation of the steam loosing valve. High working back pressure, when discharged into the atmosphere, the actual pressure difference is determined by the inlet pressure of the steam snorkel valve. 2. According to the amount of condensed oil produced by the steam heating equipment during normal operation, multiplied by the correction coefficient k, and then selected according to the oil discharge volume of the steam loosing valve. 3. The amount of condensed oil can be calculated by the following method: (1) The amount of condensed oil produced during pipeline operation is Q = q0L (1-Z/%) (kg/h). In this formula: Q: The amount of condensed oil (kg/ h) q0: The amount of condensed oil produced by the light pipe Pressure reducing valve (kg/h) L: The distance between the lean points (m) Z: The heat retaining efficiency (%) (2) The condensed oil produced during the operation of the steam heating equipment Quantity Q=VrCΔT/Ht, in this formula: Q: Volume of condensed oil (kg/h) V: Volume of heated object (m3) r: Density of heated object Solenoid valve (kg/m3) C: Liquid Specific heat (kcal/kg.OC) △ T: Liquid temperature rise (OC) H: Vapor latent heat (kcal/kg) t: Heat time 4. Table 1 recommends the use of the correction factor K for common service conditions. Value for user reference. 5. The structure and principle of various types of steam oleophobic valve are different, and the performance fluid is not the same. When selecting, different steam oligohydraulic valves can be selected according to different use occasions.