Heat pump maintenance need to pay attention to eight issues points

Thermal oil pump maintenance is not as simple as other pumps, a little bit complicated, to be strictly in accordance with the detailed heat transfer pump assembly drawings, the following will be given attention to the thermal oil pump maintenance of the eight issues, I hope will be helpful to you!

First, the transmission medium to transfer the heat pump oil pump cover and bearing heat from the surface of the pump cover and bearing heat dissipation, the temperature of the bearing seat to adapt to the temperature of shaft sealing function. Therefore, the selection of heat transfer oil pump installation location, to make the pump cover and bearing seat of the heat for easy proliferation, does not cause any heat accumulation phenomenon.

Second, two ball bearings are provided in the bearing housing. A ball bearing on the pump impeller side of the heat conducting oil pump is lubricated with the heat-conducting oil delivered. A ball bearing on the coupling side is lubricated with high-temperature grease. Each Ball bearings running 3000h, you must remove the clean with diesel to detect the contact surface is damaged, if damaged, you must replace the bearings. When using the ball bearing unit on the impeller side, install the dust-proof cover on the side facing the impeller and lubricate the heat-conducting oil before starting the machine. On the coupling side of the ball bearings, with complex calcium-based high-temperature grease, the bearing again when the equipment, the dust cover side also toward the impeller side of the device, install the filling grease. After the bearing is running for 48h, use a grease gun to inject replenishment grease into the pressure grease cup on the bearing cap.

Third, not available on the input pipe gate flow regulation, prevention of gas production anger.

Fourth, often check the loose bolts of the ground conditions, heat pump oil pump casing temperature and inlet temperature are the same, the export pressure gauge fluctuations and pump vibration status.

Fifth, pay attention to the operation of the heat pump has no noise, if found to lead the normal state, should be promptly resolved.

Sixth, the heat transfer oil pump should not be less than 35% of the design flow continuous operation, if necessary under the premise of the operation, it should be installed in the bypass bypass pipe exports, and to flow above the minimum.

Seventh, the heat pump shaft is equipped with a stuffing box at the front end, the sealing function is more reliable, and the mechanical sealing device is provided in the bearing seat so that a large amount of exposure can not be thrown up, and a small amount of leakage can be discharged through the exposure nozzle receive. A small amount of exposure is normal at the beginning of the operation, and the exposure will be reduced or intermittent after running through the sealing surface over a period of time.

Eighth, stop: intercept the power. The heat transfer oil pump liquid venting, cleaning and should be on schedule to rotate the impeller 180 degrees to prevent shaft deformation until the pump is completely cooled so far.

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