Stainless steel multi-stage centrifugal pump mainly for conveying water and physical and chemical properties similar to the use of liquid water. Its biggest advantage is the advanced hydraulic model design, high efficiency, high energy. Pump internal impeller, pump shell and its main accessories using stainless steel stamping forming, flow is particularly smooth, bearing, sleeve with carbide, with superior service life, to avoid secondary pollution. Liquid maximum temperature does not exceed 80 ℃, widely used in mine drainage, factories and urban water use.
In order to ensure that the stainless steel multi-stage centrifugal pump after the assembly of mechanical seals without leakage, stainless steel multi-stage centrifugal pump density check is essential, but the inspection process is more complex, the following will give a more detailed method of operation:
1, measuring static ring anti-turn pin length and pin hole depth, to prevent the pin is too long static ring can not be assembled in place. This condition can damage the mechanical seal.
2, check the moving ring, static ring and shaft or sleeve gap, static ring diameter is generally larger than the shaft diameter 1-2mm, for the moving ring, in order to ensure the floating, diameter than the shaft diameter 0.5-1mm, to compensate Axis vibration and skew, but the gap can not be too large, otherwise it will move ring seal ring into the mechanical seal caused by the destruction of the function.
3, measure the dynamic ring, static ring sealing surface size. This data is used to verify the radial width of the ring, was elected with different friction material, the friction surface of the hard material should be 1-3mm wider than the soft, otherwise easy to cause the edge of the hard material embedded in soft materials Face up.
4, measuring the length of the compensation spring is changed. Spring performance changes will have a direct impact on the mechanical seal end pressure. Under normal circumstances, the length of the spring in the long run will be shortened, the compensation spring in the dynamic ring on the mechanical seal will be due to centrifugal force deformation.
5, stainless steel multi-stage centrifugal pump mechanical seal tight check. We usually speak of the mechanical seal tight end is pressure, the end face than the pressure to be appropriate, too large, will make the mechanical seal friction surface heat, accelerate the end wear, increase the friction power; too small, easy to leak. End face pressure is determined in the mechanical seal design, we can only rely on the measurement of mechanical seal tightness to determine. Usually the measurement method is to measure the vertical distance between the end face of the stationary ring and the end face of the gland, and the vertical distance between the end face of the moving ring and the face of the gland. The difference is the tightness of the mechanical seal.
In order to ensure that the stainless steel multi-stage centrifugal pump after the assembly of mechanical seals without leakage, stainless steel multi-stage centrifugal pump density check is essential, but the inspection process is more complex, the following will give a more detailed method of operation:
1, measuring static ring anti-turn pin length and pin hole depth, to prevent the pin is too long static ring can not be assembled in place. This condition can damage the mechanical seal.
2, check the moving ring, static ring and shaft or sleeve gap, static ring diameter is generally larger than the shaft diameter 1-2mm, for the moving ring, in order to ensure the floating, diameter than the shaft diameter 0.5-1mm, to compensate Axis vibration and skew, but the gap can not be too large, otherwise it will move ring seal ring into the mechanical seal caused by the destruction of the function.
3, measure the dynamic ring, static ring sealing surface size. This data is used to verify the radial width of the ring, was elected with different friction material, the friction surface of the hard material should be 1-3mm wider than the soft, otherwise easy to cause the edge of the hard material embedded in soft materials Face up.
4, measuring the length of the compensation spring is changed. Spring performance changes will have a direct impact on the mechanical seal end pressure. Under normal circumstances, the length of the spring in the long run will be shortened, the compensation spring in the dynamic ring on the mechanical seal will be due to centrifugal force deformation.
5, stainless steel multi-stage centrifugal pump mechanical seal tight check. We usually speak of the mechanical seal tight end is pressure, the end face than the pressure to be appropriate, too large, will make the mechanical seal friction surface heat, accelerate the end wear, increase the friction power; too small, easy to leak. End face pressure is determined in the mechanical seal design, we can only rely on the measurement of mechanical seal tightness to determine. Usually the measurement method is to measure the vertical distance between the end face of the stationary ring and the end face of the gland, and the vertical distance between the end face of the moving ring and the face of the gland. The difference is the tightness of the mechanical seal.
Manufacturers recommend: Shenlong stainless steel multi-stage centrifugal pump
Keywords:Stainless steel multi-stage centrifugal pump, advanced design and high efficienc
没有评论:
发表评论