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There are several types of submersible pumps produced by Liangbang Pumps, so different submersible pumps have different methods for controlling the flow of water. The line package in the motor is oil intrusive, water intrusive, and dry. Before using, you must read the instructions. You can't make mistakes. If you do not use it for a long time, you must turn the impeller before use. Otherwise, you will not use the card for a long time. Die while burning the pump.
The suction tube and the pump must be filled with liquid before starting the pump. After the pump is turned on, the impeller rotates at a high speed, and the liquid rotates with the blades. Under the action of centrifugal force, it flies out of the impeller and shoots out. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, the pressure gradually increases, and then the pump Outlet, discharge pipe outflow. At this time, the vacuum is formed in the center of the blade due to the liquid being thrown around to form a vacuum and low pressure area with no air and no liquid. The liquid in the liquid pool flows into the pump through the suction pipe under the action of atmospheric pressure at the pool surface. It is continuously pumped up from the liquid pool and continuously discharged from the discharge pipe.
For the use of high-lift submersible pumps, we mainly deal with the drainage. Then, for the control of the amount of water and water flow, I believe that many people are unaware of the solution. Next, I will explain the various adjustment methods for the flow control of submersible pumps.
1. Variable speed adjustment. Changing the speed of the submersible pump can change the performance of the pump, so that the operating point of the pump changes. This method is called variable speed mediation.
2. Diameter adjustment. After the impeller is turned, the performance of the water pump will change according to a certain law, so that the operating point of the pump will change. The method of turning the impeller to change the operating point of the pump is called adjusting the diameter.
3. Angle adjustment. Changing the installation angle of the blade can change the performance of the water pump so as to achieve the purpose of changing the operating point of the submersible pump. This way of changing the operating point is called the variable angle adjustment of the pump.
4. Throttle adjustment. For a water pump installation with a gate valve installed in a water outlet, when the gate valve is closed and the local resistance is increased in the piping, the characteristic curve of the piping becomes steep, and the operating point moves to the upper left along the QH curve of the pump. The smaller the gate valve is closed, the greater the increased resistance and the smaller the flow becomes. This method of changing the pump operating point by closing the small gate valve is referred to as throttling regulation or variable valve regulation.
When the small gate valve is closed, the local head loss of the pipeline increases, the characteristic curve of the pipeline system moves to the upper left, and the operating point of the pump also moves to the upper left. The smaller the gate valve is closed, the greater the local head loss and the smaller the flow. This shows that throttling not only increases the local head loss, but also reduces the amount of water outflow, which is very uneconomical. However, because of its simplicity, it is used in the performance tests of small-sized pump units and pumps.
Author: Yong Jia Liangbang pump manufacturers
There are several types of submersible pumps produced by Liangbang Pumps, so different submersible pumps have different methods for controlling the flow of water. The line package in the motor is oil intrusive, water intrusive, and dry. Before using, you must read the instructions. You can't make mistakes. If you do not use it for a long time, you must turn the impeller before use. Otherwise, you will not use the card for a long time. Die while burning the pump.
The suction tube and the pump must be filled with liquid before starting the pump. After the pump is turned on, the impeller rotates at a high speed, and the liquid rotates with the blades. Under the action of centrifugal force, it flies out of the impeller and shoots out. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, the pressure gradually increases, and then the pump Outlet, discharge pipe outflow. At this time, the vacuum is formed in the center of the blade due to the liquid being thrown around to form a vacuum and low pressure area with no air and no liquid. The liquid in the liquid pool flows into the pump through the suction pipe under the action of atmospheric pressure at the pool surface. It is continuously pumped up from the liquid pool and continuously discharged from the discharge pipe.
For the use of high-lift submersible pumps, we mainly deal with the drainage. Then, for the control of the amount of water and water flow, I believe that many people are unaware of the solution. Next, I will explain the various adjustment methods for the flow control of submersible pumps.
1. Variable speed adjustment. Changing the speed of the submersible pump can change the performance of the pump, so that the operating point of the pump changes. This method is called variable speed mediation.
2. Diameter adjustment. After the impeller is turned, the performance of the water pump will change according to a certain law, so that the operating point of the pump will change. The method of turning the impeller to change the operating point of the pump is called adjusting the diameter.
3. Angle adjustment. Changing the installation angle of the blade can change the performance of the water pump so as to achieve the purpose of changing the operating point of the submersible pump. This way of changing the operating point is called the variable angle adjustment of the pump.
4. Throttle adjustment. For a water pump installation with a gate valve installed in a water outlet, when the gate valve is closed and the local resistance is increased in the piping, the characteristic curve of the piping becomes steep, and the operating point moves to the upper left along the QH curve of the pump. The smaller the gate valve is closed, the greater the increased resistance and the smaller the flow becomes. This method of changing the pump operating point by closing the small gate valve is referred to as throttling regulation or variable valve regulation.
When the small gate valve is closed, the local head loss of the pipeline increases, the characteristic curve of the pipeline system moves to the upper left, and the operating point of the pump also moves to the upper left. The smaller the gate valve is closed, the greater the local head loss and the smaller the flow. This shows that throttling not only increases the local head loss, but also reduces the amount of water outflow, which is very uneconomical. However, because of its simplicity, it is used in the performance tests of small-sized pump units and pumps.
Author: Yong Jia Liangbang pump manufacturers
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