( Dry! ] Introduction to heat pump - knowledge

heat pump only by the pump body, impeller, pump cover, bearing, spindle, high temperature seals, bearing and gland. Heat pump is used to transfer heat temperature of 350 ° high temperature heat conduction oil or chemical raw materials. The material of the pump is usually according to the users of the transmission medium and different. General pump body is made up of cast steel, ductile iron and stainless steel. High temperature water pump bearings imported materials, sealers adopt high temperature resistant seal. The temperature of the pump can be according to the actual requirements of users. High temperature heat pump, long running time.

1, regardless of whether or not accurate electric mechanical steering, heat pumps are based on two kinds of energy, such as pressure and speed, they are by the rotating impeller. Test time is short, can avoid dry heat pump mechanical seal wear.

2, open the discharge valve, the liquid fills the pump body, and the kinetic energy through heat pump body as efficiently as possible can converts kinetic energy into pressure.

3, check all parts heat pump is normal.

4, manual mobile temperature self-priming pump, so that the lubricant into the mechanical seal face. To the oil from low pressure injection of high pressure or low pressure injection pressure, heating speed of 50 ° C/h, to ensure that the parts are evenly heating.

1, the heat pump inlet valve fully open, the outlet valve fully closed, the motor starts, and the operation of the heat pump has been completely checked.

2, when heat pump outlet pressure is higher than the working pressure, gradually open the outlet valve to control the flow and pressure of the heat pump.

3, check whether the motor current is within the scope of the rating. If heat pump runs to the rated flow and motor overload, stop hot water pump inspection.

1, the first shut down the heat pump outlet valve, then stop back heat pump in order to prevent the heat pump.

2, stop, heat pump, and pay attention to the reduction of shaft. If the time is too short, please check whether there is a chip in the high temperature water pump or debris.

3, if it is a high temperature hot oil pump, please stop flushing oil or seal oil, open the valve inlet pipe balancer or connections, in order to prevent the entry and exit pipes freeze and burst.

4, if you need to repair heat pump, and inlet valve is closed, should according to maintenance program to determine whether to purge and release pressure. If there is stress in high temperature water pump, the inlet valve and outlet valve may not be tight.