In addition to salt centrifugal pump installation sequence and skills

Desalination centrifugal pump installation order

desalination centrifugal pump before use should be the correct installation, if the installation is not correct lead to desalination centrifugal pump can't use will result in a centrifugal pump damage even wait for a phenomenon, in addition to salt pump installation program as shown in centrifugal pump installation sequence diagram. Should review the basic level and elevation before the new pump in position. In addition to salt the center line of the centrifugal water pump alignment, horizontal alignment, is the key in the process of installation.

1, the center line of alignment

center line of alignment is looking for longitudinal and lateral centerlines are pump. First a good basis for longitudinal and lateral centerlines of the top surface, and then in the pump inlet and outlet flange surface ( Double suction centrifugal pump) And the center of the shaft hanging vertical, respectively. Based on position adjusting pump, vertical and longitudinal and lateral centerlines of the match.

2, horizontal alignment

is looking for is to look for the level is the pump longitudinal and transverse level. Generally, using the method of level or hanging vertical single-stage centrifugal pump measured on the pump shaft and outlet flange.

double suction centrifugal pump in the water pump inlet and outlet flange surface measurement, use the method of adjusting shim, the level of bubble in the middle, or make the flange surface to the distance apart is exactly equal to the length of vertical or with vertical overlap. Horizontal double-suction centrifugal pump can also be opened in the level of the pump shell, the choice can be associated with cross-shaped four points on the grade rod set on the four points, use level reading reading of each level ruler if the reading is equal, the water pump of the longitudinal and transverse horizontal alignment at the same time. 3, vertical alignment

refers to the height of water pump water pump elevation axis. Elevation is the purpose of the alignment check and design elevation height of pump is installed, use level and the level ruler to measure. When measuring a point elevation Hs level ruler in known level, will be another level ruler on the pump shaft.

desalination centrifugal pump installation technique

1. In addition to salt the installation technology of centrifugal pump is the key to determine the desalination centrifugal pump installation height ( The suction) , the height is refers to the water surface to desalination centrifugal pump impeller axis vertical distance, is not to be confused with it and allow the vacuum suction height, in addition to salt centrifugal pump product manuals or nameplate signs allow the vacuum suction height is refers to the centrifugal pump inlet section on the vacuum value, and it is under the condition of 1 standard atmospheric pressure, water temperature 20 ℃ test measured. It does not consider water pipe supporting future water conditions. So, in addition to salt pump installation height should be allowed on vacuum suction height after the suction pipe head loss, the remaining portion of the values, it must overcome the terrain suction height. Desalination centrifugal pump installation height can't more than calculated value, otherwise, chemical centrifugal pump will pump water.

      2. Reduce the pipeline resistance, therefore, appropriate USES the shortest piping layout, and try to minimize the fittings such as elbow, also can consider the appropriate with larger diameter of the pipe, to reduce tube flow velocity.

      3. It should be noted that in addition to salt pump installation site elevation and water temperature is different from the test conditions, such as local 300 meters above sea level, or by pumping the water temperature of more than 20 degrees Celsius, the calculated value will be revised. Is that the atmospheric pressure and at different elevation height of the more than 20 ℃ the saturated vapor pressure of water temperature. But, when the water temperature is 20 ℃ below, saturated vapor pressure can be ignored.

      4. Suction piping from the pipe installation technology, requires strict sealing, not leak, leakage, otherwise it will damage in addition to the centrifugal pump inlet of the vacuum salt, reduce of centrifugal pump in addition to salt water, serious when even tied up. Therefore, to seriously do a good job in pipeline interface ensure the construction quality of pipe connection.

      5. In addition to salt centrifugal pump export to install the check valve. In production, sometimes there will be a power outage, the problem such as motor fault, causing the running equipment shutdown suddenly, in the export of centrifugal pump check valve installation, in order to prevent the pump suddenly shut down, the export pipeline within the liquid will not go back to the pump, the impeller inversion, formation water hammer effect, resulting in damage of impeller and mechanical seal, etc.

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