What is a self-pressure booster system and how is it related to a mechanical seal?

Mechanical seal, also known as end face seal, is defined in the relevant standards as follows: at least a pair of end faces perpendicular to the rotation axis are kept in contact and relative sliding under the action of fluid pressure and the elastic force of the compensation mechanism and the cooperation of the auxiliary seal. Constructed means to prevent fluid leakage. The self-pressure boosting system with a balance tank is a pressure transmission mechanism used for double-end mechanical seals to solve the problem that the partial lift of the existing circulating water pump cannot overcome the resistance of the system. Once the lift of the circulating pump is increased, the power of the motor equipped with the circulating pump will be greatly increased, and the electricity cost of equipment operation will also increase. The structure of its own pressure booster system includes a water outlet, a fixed flange, a pump body, a booster device, a motor rotor, a lifting ring, a protective cover, a water pump, a fixed base, a base, a reinforcement, a control valve, and a fastener. The water inlet is connected with the fixed flange, and the pump body is connected with the booster device. The booster device is composed of a water inlet, a water pipe, a negative pressure chamber, a balance fixed plate and a fastening bracket. The water inlet is connected with the water pipe, and the water pipe is connected with the negative pressure. The chamber is connected, the negative pressure chamber is balanced by the balance fixing plate, the fastening bracket is fixedly connected with the pump body, the protective cover is connected with the water pump, the water pump is connected with the fixed base, the fixed base is fastened with the base, and the base is There are reinforcements, fasteners) fixedly connected to the base. Since the pressure bearing area of u200bu200bthe upper end of the piston body is less than that of the lower end of the piston body by one piston rod area, the sealing oil pressure increases inversely proportional to the pressure bearing areas of both ends, thereby ensuring the sealing condition. When designing the ratio of the pressure bearing areas at both ends of the piston, it should be calculated according to the required pressure difference between the sealing chamber and the kettle. A spring is installed on the piston rod to adjust the compression of the spring, so that the spring force can just offset the friction force of the O-ring on the piston to the cylinder wall, so as to reduce the error between the calculated value of the differential pressure and the actual value. In addition, the piston lift also has the function of indicating the liquid level in the balance tank. When the leakage of the sealing liquid needs to be supplemented, the sealing liquid can be filled with a manual pump. When using, it should be noted that the piston should always be in the lower position of the balance tank, so that the piston has room to move upward.