Influencing Factors and Solutions of Hot Oil Pump Cavitation Allowance

Category: Water pump knowledge

2024-09-02

Hot oil pump cavitation allowance refers to the phenomenon of pump performance degradation caused by gas entering the pump during the operation of the hot oil pump. This phenomenon not only affects the efficiency of the pump, but may also cause damage to the pump. The following are the hot oil pump cavitation allowance Factors and solutions.

1. influencing factors:

1. Inlet pressure: Inlet pressure is too low will make the pump easy to inhale gas, resulting in cavitation.

2. Liquid temperature: An increase in temperature will reduce the saturated vapor pressure of the liquid, increase the solubility of the gas, and increase the risk of cavitation. Excessive temperature will reduce the solubility of gas in the liquid, thereby increasing the possibility of gas evolution, thereby affecting the working efficiency of the hot oil pump.

3. Pump speed: too high speed may cause the suction of the pump to weaken and increase the possibility of gas entering the pump.

4. Pipeline design: Unreasonable pipeline design may lead to increased pump suction resistance, causing cavitation.

2. solutions:

1. Optimize the inlet pressure: ensure that the inlet pressure of the hot oil pump is within a reasonable range and avoid too low or too high pressure.

2. Control liquid temperature: reasonable control of liquid temperature, to avoid too high or too low temperature. For high-temperature liquids, cooling measures can be taken, such as the use of coolers. The working temperature of the hot oil pump should be controlled to avoid the influence of excessive temperature on the cavitation margin.

3. Adjust the speed of the pump: adjust the speed of the pump according to the actual needs to avoid the weakening of the suction caused by the high speed.

4. Improve pipeline design: optimize pipeline design, reduce suction resistance and reduce cavitation risk.

5. Increase cavitation prevention measures: such as setting the exhaust valve, improving the sealing performance of the pump, etc., to reduce the possibility of gas entering the pump.

Select the appropriate hot oil pump: select the appropriate hot oil pump model according to actual needs to ensure that it adapts to specific process conditions and reduces the risk of cavitation.

7. Regular inspection and maintenance: regular inspection and maintenance of the hot oil pump to ensure that it is in good running condition. If cavitation is found, deal with it in time to avoid the problem from expanding.

8. Operation management: strengthen the training of operators, improve their understanding and ability to deal with hot oil pump cavitation, and ensure the normal operation of equipment.

To solve the problem of hot oil pump cavitation, other measures can be taken in addition to controlling temperature, gas content and flow rate. For example, adding gas inhibitors to the hot oil pump can effectively reduce gas evolution and cavitation. In addition, regular maintenance and cleaning of the pump is also very important to maintain the cleanliness of the pump.

In short, the cavitation allowance of the hot oil pump is affected by many factors, and measures need to be taken to prevent and solve it from many aspects. In practical application, the appropriate solution should be selected according to the specific situation to ensure the normal operation of the hot oil pump.

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