Analysis on installation of water ring vacuum pump unit

The key to the installation technology of water ring vacuum pump unit is to determine its installation height. This height refers to the vertical distance between the water surface of water source and the center line of impeller, which can not be confused with the allowable vacuum height. The vacuum value on the water ring vacuum pump's water inlet section is indicated on the nameplate or product manual of the water ring vacuum pump, and it is under 1 standard atmospheric pressure and when the water temperature is 20 ℃, The installation height of water ring vacuum pump should be allowed to absorb the vacuum height after deducting the loss head of the suction pipe. It needs to overcome the actual terrain suction height.

The installation height of water ring vacuum pump unit should not exceed the calculated value, otherwise it will not be able to pump water. In addition, the influence of the calculation value is the resistance loss head of the suction pipe. Therefore, the shortest pipeline layout should be adopted, and the fittings such as elbows should be installed as few as possible, and the water pipe with larger diameter can also be considered to reduce the flow velocity in the pipe. It should be pointed out that when the elevation and water temperature of the water ring vacuum pump installation site are different from the test conditions, the calculated value should be corrected. That is, the atmospheric pressure at different altitudes and the saturated vapor pressure when the water temperature is higher than 20 ℃.

When the water temperature is below 20 ℃, the saturated vapor pressure can be ignored. In terms of pipeline installation technology, the suction pipe should be strictly sealed, and no air or water leakage is allowed. Otherwise, the vacuum degree at the water inlet of the water ring vacuum pump will be destroyed, and the water output of the water ring vacuum pump will be reduced, and even the water can not be pumped in serious cases. Therefore, it is necessary to do a good job in pipeline interface work to ensure the construction quality of pipeline connection.