What are the methods for fault diagnosis of water ring vacuum pump?

During the overhaul process, the diagnosis of the water ring vacuum pump fault is a key link. The following are some common faults and solutions given by Hugong in our factory for the purpose of diagnosis of the water ring vacuum pump fault. Everyone solves the tough problem at an early date.

1. The water ring vacuum pump is supplied without liquid, and the supply of liquid is insufficient or insufficient pressure:

(1) no water injection or proper exhaustion;

Solution: Check that the vacuum pump casing and inlet lines are all filled with liquid.

(2) the speed is too low;

Solution: Check if the motor wiring is correct, the voltage is normal or the turbine steam pressure is normal.

(3) The system head is too high;

Solution: Check the head of the system (especially the friction loss).

(4) The suction stroke is too high;

Solution: Check the existing net head (the inlet line is too small or too long will cause a large friction loss).

(5) The impeller or pipeline is blocked;

Solution: Check for obstacles.

(6) The direction of rotation is incorrect;

Solution: Check the direction of rotation.

(7) There is a leak in the generated air or inlet line;

Solution: Check the inlet line for air pockets and/or air leaks.

(8) The packing or seal wear in the stuffing box causes air to leak into the vacuum pump casing;

Solution: Check the packing or seal and replace as needed to check if the lubrication is normal.

(9) Insufficient suction head when pumping hot or volatile liquids;

Solution: Increase the suction head and consult the manufacturer.

(10) The bottom valve is too small;

Solution: Install the correct size bottom valve.

(11) The bottom valve or inlet tube is not submerged enough;

Solution: Consult the manufacturer for the correct immersion depth. Use a baffle to eliminate eddy currents

(12) The impeller clearance is too large;

Solution: Check that the gap is correct.

(13) impeller damage;

Solution: Check the impeller and replace it as required.

(14) The impeller diameter is too small;

Solution: Consult the manufacturer for the correct impeller diameter.

(15) The pressure gauge is not in the correct position;

Solution: Check that the position is correct and check the outlet nozzle or pipe.

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