1. water diversion method of common centrifugal pump
When the centrifugal pump is used to lift the liquid, it is often equipped with the piping and other necessary accessories. The typical centrifugal pump piping attachment device is shown in Figure 5.4.1.
From the end of the valve below the suction tank level to the suction flange so far. Transport segment called water pipe. At the end of the valve's role is to prevent the pump before the start of irrigation Water Leakage. A vacuum gauge is installed outside the suction port of the pump. In order to observe the vacuum value at the suction port.
The resistance of the horizontal section of the suction pipe should be as low as possible. It is generally not equipped with the valve. The horizontal pipe should be carried to the pump (? =0.02) so as to facilitate the removal of the air. Too long water suction pipe section should be equipped with anti vibration parts. The pipe section outside the outlet of the pump is a water pipe section. The pressure pipe section is equipped with a pressure gauge to measure the pressure of the pump outlet. The spherical check valve is used to prevent the reverse flow of liquid in the pipe. The gate valve is used to regulate the size of the flow. In addition. Drainage pipes should also be installed in order to lead the leakage of water from the filling cover to the drain. Sometimes, in order to prevent vibration, the K-ST type flexural rubber joint is generally used at the inlet and exit of the pump. In addition, the water pump installed on the heating and air conditioning system also needs to install the thermometer at its exit and entrance.
When the suction pipes of two or more than two pumps are connected to each other, or when the pump is in the self filling irrigation mode, that is, when the installation height of the pump is lower than the water level of the pool, the gate valve is installed on the suction pipe.
2. centrifugal pump water diversion metering equipment
The flowmeter mainly includes the electromagnetic flowmeter, the ultrasonic flowmeter, the insert type turbine flowmeter, the insert type vortex flowmeter, the mean velocity tube flowmeter and so on. As shown in figure 5.4.2, there is no negative pressure variable frequency constant pressure water supply equipment.
Water diversion and exhaust method of 3. centrifugal pump and water diversion facility of centrifugal pump
There are suction and self irrigation methods for centrifugal pumps, and the self priming pump is installed below the water inlet. Suction units installed on the water inlet need to be pumped and discharged before the pump starts. There are mainly several ways to pump and exhaust the centrifugal pumps.
(1) water pipe with valve.
1) artificial water diversion. Water from the pump top of the pump into the pump. At the same time open the exhaust valve, suitable for temporary water supply and small centrifugal pumps.
2) use the water in the outlet pipe to drain the water, and install a gate valve on the outlet pipe to shut down before stopping the pump. When we need to irrigate, we can open the gate valve to achieve the function of backward flow.
(2) water pipe valve is not installed
1) the vacuum pump can be used for water diversion. Water ring vacuum pump is usually used for water diversion.
2) the water ejector can also be used to lead the water.
If you do not want to add any centrifugal pump water diversion device can be selected to choose a variety of self-priming pump products can meet the requirements.
- Close This Page
- Recommendation：
- Browse：
