Boiler Feed Water Pump Mechanical Seal

To ensure adequate feedwater flow a boiler must have at all times a slightly higher capacity for feedwater than for steam generation capacity of boiler.

Boiler feed water pump mechanical seal. Transient or low flow operating conditions cause additional loads on boiler feed pumps. Commissioning of a boiler feed water pump. For safe and reliable mechanical seal operation the water temperature must be below 65 c 150 f where the viscosity is above 0 43 cp. About 1 of these are seals.

Along with this the procedure for dismantling and assembling of the boiler feed water pump and seal. In this article you can get a clear picture on the boiler feed water pump that is multistage centrifugal pumps and type of seal used in it. This is a unique seal developed to meet stringent technical requirements of boiler feed water pumps. Warming up and keeping warm.

Gland packings are less common these days. Also see shaft seal. In terms of expected performance of a mechanical seal on a high speed boiler feed pump seen from an end. Feed water in the seal chamber and only the leaked part is replaced with hot pump fluid.

A wide variety of boiler feed water pump mechanical seal options are available to you such as material. The leak pack designed lps 258 is a unique seal developed to meet stringent technical requirements of boiler feed water pumps rotating stationary ring design makes it suitable for high speed application avoids critical requirement of stuffing box face squareness. Rotating mating ring design makes it suitable for high speed application avoids critical requirments of stuffing box face squareness. Electrical potential between dissimilar seal face materials is created in boiler feed pumps from friction at the seal interface and is normally safely discharged by conductive water around the seal.

The sealing conditions for boiler feedwater pumps range from 20 to 200 barg 290 to 2 900 psig up to 175 c 347 f and shaft speeds between 3 600 and 5 500 rpm. This pump is fitted with mechanical seal or labyrinth glands to prevent leakage along the shaft and a balance piston to achieve hydraulic balance and balancing line from first stage to last stage to. Common shaft seals for boiler feed pumps are mechanical seals floating ring seals and labyrinth seals. When electrical conductivity of high purity feed water falls below 2 µ siemens centimeter it no longer acts as a conductor and instead allows electrical potential to build on the surface of the.