On the application of API682 standard PLAN01 to the rotating jet pump
2018-03-10
Conventional centrifugal pump mechanical seal in the pump outlet, and rotating jet pump mechanical seal in the pump entrance, the principle structure of pump, mechanical seal design and sealing arrangement is different, API682 is a conventional centrifugal pump flushing and cooling standard based on the standard for rotating jet pump to make concrete analysis to the following the most simple PLAN01 scheme is applied to the rotary jet as an example for specific analysis.
About API682 PLAN01:
The API682-A4.2 section points out that the Plan 01 scheme flushing fluid is directly introduced from the part of the impeller back to the outlet of the pump to the sealing cavity.
About API682 PLAN01:
The API682-A4.2 section points out that the Plan 01 scheme flushing fluid is directly introduced from the part of the impeller back to the outlet of the pump to the sealing cavity.
Plan 01 schematic diagram
The purpose of introducing flushing fluid from the back of the impeller is to reduce the pressure of the flushing fluid, about 1/3 (without import pressure), which introduces the pressure directly from the outlet. It is impossible to implement this scheme on a rotating jet pump. From the chart we can see that the rotating jet pump impeller and the cavity is rotating together, cannot be drawn from the rotating body, can only be understood to be imported directly from the outlet of the pump fluid, and the pump outlet pressure is relatively high, directly into the rotating jet pump low pressure seal is obviously inappropriate, so in the rotating jet pump when in use, can not simply apply.
