Leakage testing system

safetyoperationalfor submerged pumps

Safety, function and leak test for electric submersible pumps The submersible pumps manufactured must be tested as automatically as possible. In addition to the safety tests, function test of the pump and leak test of the motor compartment, including the float switch, were performed. The testing system was developed based on a short test duration, so that it can operate concurrently with the production line. Moreover, operation should be automatic and as simple as possible, so as to allow semi-skilled assistants to carry out the test. It should be possible to place the various types of pumps in the device without modifying the DUT support. It should be noted in the leak test that the Schuko plug must also be sealed in addition to the terminal directly to the motor compartment; otherwise, air will be drawn in by this plug. The motor compartment had to be closed after the leak test with a screw and then checked whether this screw is actually present. Finally, the pumps must be marked by hot stamping after successful testing. Solution Several recesses were provided in the support for the pump base so that several types of pumps can be tested without modification of the testing system. In the process it is ensured that the actual pump body is at the same height for all types of pumps, thus allowing automatic fixing and contacting. The Schuko plug is clamped in a clamping device, in which it is simultaneously sealed and electrically contacted. The entire test device is set up in a drawer, so that the pump can be easily placed and then, slid into the testing area secured with light curtains.