Advantages of mechanical seals for desulfurization pumps

Measurement of friction torque. At present, the measurement of the friction torque of the mechanical seal end face of the desulfurization pump mainly adopts the support-reaction method and the transmission method. The support reaction force method measures the torque according to the change of the support reaction force generated by the power machinery under the action of the torque; the transmission method measures the torque according to the change of the physical parameters generated by the elastic element when the torque is transmitted. A torque sensor is installed between the motor and the sealing spindle, the sensor transmits the measured signal to the torque tachometer, and then the torque meter signal is input into the computer, through the data acquisition card in the computer, with the mechanical seal measurement and control software that has been written. Signal acquisition and data processing, the shaft torque can be obtained. The measurement methods of mechanical seal end face temperature mainly include thermal resistance method, thermocouple method and infrared measurement method. The thermal resistance method is measured by using the properties of the resistance of conductors or semiconductors changing with temperature; the infrared measurement method is a method of measuring temperature by infrared chromatography. However, because infrared measurement method has the advantages of convenient multi-point measurement and convenient use, infrared measurement is a suitable method. Infrared measurement was used to measure the temperature of the seal face and the fluid temperature of the seal cavity. Measurement of pressure in mechanical seal chamber of desulfurization pump. Test benches that use external equipment to circulate and pressurize the sealing fluid generally directly measure the average pressure of the sealed cavity. A precision pressure gauge is installed on the sealing chamber to measure the pressure of the sealing chamber medium and sealing liquid, and the pressure gauge is convenient for direct reading. Measurement of pumped volume. The pumping volume is an important indicator of the liquid film non-contact seal, which can be measured by a flow meter. The use of the spiral groove can realize the pumping of the sealing oil to the medium, so as to prevent the hot oil from leaking out. The contact seal on the outside of the seal prevents the problem of seal oil leakage.