Prefabricated pump station and water flow stabilizing method suitable for prefabricated pump station

Abstract

The invention discloses a prefabricated pump station. The prefabricated pump station comprises a prefabricated barrel, and a water inlet and a water outlet are formed in the prefabricated barrel. A pump barrel is arranged in the prefabricated barrel, and a water pump is arranged on the bottom section of the pump barrel. The upper end of the pump barrel communicates with the water outlet. Water flow falls into the bottom of the prefabricated barrel through the water inlet, is drawn into the pump barrel through the water pump located at the bottom of the prefabricated barrel and flows out through the water outlet, and a flow equalizing separation plate is arranged at the lower end of the water inlet. The flow equalizing separation plate is fixedly arranged on the inner wall of the prefabricated barrel and converts single-direction input water of the water inlet into annular water flow, and the annular water flow evenly falls onto the bottom of the prefabricated barrel. It is avoided thatthe water flow fixedly flows in a single direction at high flowing speed or impacts on the pump barrel, and consequently water flow turbulence is avoided. In particular, existing direct-in water flowis changed into the annular water flow, the flow equalizing separation plate is located around the barrel, water is drained downwards through water drainage openings evenly formed in the flow equalizing separation plate, the water flow rushing into the water inlet do not impact on the barrel directly, and therefore input water is equivalently and evenly drained downwards.

Description

technical field [0001] The invention relates to the field of prefabricated pumping stations, in particular to a prefabricated pumping station with high impact resistance and high stability. Background technique [0002] Prefabricated pumping stations are widely used and are pre-integrated pumping stations, which play a key role in the construction of new cities and the transformation of old urban water systems, flood control and disaster reduction, and rural water conservancy. Traditional pumping stations require large investment, long construction period, and large floor area, which affect the beauty of the city and have a low degree of automation. The prefabricated pumping station has the advantages of small civil engineering workload, low cost, less manpower and material resources consumption, and can coordinate with the surrounding landscape at the same time. Prefabricated pumping stations have become the focus of domestic and foreign municipal engineering and water con...

AI Technical Summary

Problems solved by technology

Due to the limitation of the space of the integrated prefabricated pump station, this condition is not met, so there is the problem of turbulent and unstable water flow at the pump suction port

[0004] For example, the patent application with application number: 201420411510.3, titled: "An integrated pump station with a buffer device" has pointed out that: in the existing design of the pump station, the water inlet is directly set on one side of the prefabricated cylinder. The water entering the water inlet will directly impact the pump barrel, and cause a large amount of water to be concentrated on one side of the pump on one side. If the speed is too fast, the impact of the water flow on the pump will become greater and greater. At the same time, the water flow at the pump inlet will be uneven, which will produce unfavorable suction characteristics and vortices, and may induce pump vibration, which will affect the life of the pump station. Affect the stability of pump work

[0005] Secondly, in the above-mentioned application, a buffer device added by a pulverized grid is installed at the corresponding position of the water inlet in the inner wall of the cylinder, which has a poor effect on slowing down the water flow, and will cause excessive local stress on the cylinder, and even induce It is inclined, and it is impossible to fundamentally ensure that the water can evenly surround the suction port of the pump, and it cannot solve the problem of excessive suction water flow on one side of the pump and vortex generation

[0006] To sum up, the existing prefabricated pumping stations cannot maintain good suction characteristics. The suction characteristics mainly include whether the water inlet flow rate is reasonable, whether the flow state is uniform, and whether there is uneven suction (some places have more water and some places have more water) less), whether there is a suction vortex

If there are above unreasonable conditions, it may cause pump cavitation and vibration

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