Post - repair inspection of submersible motors and deep well submersible pumps

After the completion of overhaul of submersible motor and deep well submersible pump, various structural types of wells shall be formally put into use after mechanical inspection, pressure test and electrical inspection, and passed the inspection of operation.
First, mechanical inspection
    (A) deep well submersible motor repair after the mechanical inspection
    (1) and wells with submersible pumps at the junction of the wells with submersible motor size and tolerance should be consistent with GB / T 2818
"And use of submersible motors" standard provisions of the relevant provisions.
    (2) the submersible motor should be able to rotate freely, the sleeves bearing smooth running light, no stagnation, sound harmony,
Do not clip harmful noise.
    (3) The radial runout of the circumferential surface of the midpoint of the shaft extension joint of the submersible motor shall not be greater than that of the table
Provisions.
    (B) of the submersible pump repair mechanical inspection
    Submersible pump should rotate freely, smooth light, no stuck, stagnation and so on.

Second, the plastic pressure resistance test
    (A) wells with submersible motor cavity pressure test
    For different structure of the wells with submersible motors should be in accordance with the following different methods of motor within the plastic pressure test
Inspection to check the motor shaft extension of the dynamic seal and the base and the end cover and other connections sealed static seal, leakage
Happening.
    1, water-filled submersible motor or shielded submersible motor
  After assembly, should be added to the cavity from the water pressure to 0.05MPa pressure, which lasted 5min, the connection of the mouth and shaft extension should be no leakage. When the shaft end of the oil seal lip are installed outward, allowing a slight leakage of shaft surface, but this leakage should not affect the normal inspection.
    2, oil-filled submersible motor
    After the assembly of oil filling, should be cavity pressure test to check the reliability of static and dynamic seals.
    3, dry submersible motor
    Assembly process, the sealed chamber after oiling, should be cavity pressure test, check the reliability of static and dynamic seals. Test pressure 0.2MPa, which lasted 5min, the connection only the mouth and shaft extension should be no leakage.
    (B) of the submersible pump water (gas) pressure test
    1, submersible pump water (gas) pressure test purposes
    Submersible pump water (gas) pressure test purpose is to check the motor base and end cover, base and other static sealing parts of the leakage and mechanical seal leakage, check the working conditions of the sealing parts are normal.
    2, water pump pressure parts of the water (gas) pressure test
    Where water pump parts subjected to hydraulic pressure are repaired or replaced, they shall be subjected to water pressure test (or air pressure test) without leakage or other abnormal phenomena. The test pressure shall be 1.5 times the working pressure but not less than 0.2MPa for 3 minutes.
    3, mechanical seal water (gas) pressure test
    With dry or oil-filled submersible pump with double-face mechanical seal or double-track single-face mechanical seal, the sealing device on the water pump side shall be capable of withstanding the test pressure of the pump maximum head pressure but not less than 0.2MPa Lasted 3min, no leakage or other anomalies. The seal of the motor lumen and the motor side shall be capable of withstanding a pressure test for 3 min without leakage or other anomalies. The test pressure shall be 0.2 MPa for the oil-filled and dry submersible pumps; for the enclosed water-filled dive The electric pump was 0.05 MPa.
    4, simple mechanical seal air pressure test
    Repair test, such as the lack of a temporary pressure test equipment, bicycles can pump and self-made pneumatic connector on the submersible pump pressure test.