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Method for eliminating air-suction vortex at water inlet of pumping station under condition of beeline layout of gate and station

A technology for water inlets and pumping stations, applied in pumping stations, hydraulic models, water supply devices, etc., can solve problems that threaten the safe and stable operation of pumping stations, strong vibration of pump units, etc., and achieve easy popularization and application, simple methods, The effect of high operating efficiency

Active Publication Date: 2016-05-25
YANGZHOU UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Under the condition that the gates and stations are arranged in a straight line, the flow state of the water inlet during the operation of the pumping station will be more or less affected by the lateral flow velocity of the incoming river, which may generate a suction vortex that can bring a large amount of air into the pump, resulting in The water pump unit produces strong vibration, which threatens the safe and stable operation of the pump station

Method used

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  • Method for eliminating air-suction vortex at water inlet of pumping station under condition of beeline layout of gate and station
  • Method for eliminating air-suction vortex at water inlet of pumping station under condition of beeline layout of gate and station
  • Method for eliminating air-suction vortex at water inlet of pumping station under condition of beeline layout of gate and station

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Embodiment

[0070] Such as Figure 6 As shown, a pumping station hub adopts the arrangement of gates and stations side by side. The pumping station 2 of the pumping station hub is equipped with 5 sets of vertical axial flow pump units, and the diameter of the pump impeller is D 0 The pumping station 2 has a length of 24.5m along the flow direction and a width of 38.9m in the vertical flow direction. The angle β between the centerline 9 of the pumping station and the centerline 10 of the diversion river is 10°. The control gate 1 of the pump station hub is divided into 5 holes, each hole has a net width of 10m, the length of the gate body along the water flow direction is 24.5m, and the width of the vertical water flow direction is 53.6m. According to the needs of the structure layout of the cleaning machine bridge, the length and width of the pier 12 of the cleaning machine bridge in the original design are 10m and 1m respectively.

[0071] The pier 12 of the cleaning machine bridge orig...

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Abstract

The invention discloses a method for eliminating air-suction vortex at the water inlet of a pumping station under the condition of beeline layout of a gate and a station, and belongs to the technical field of hydraulic engineering pumping stations. The method is characterized in that the aim of eliminating the air-suction vortex at the water inlet of the pumping station is fulfilled by controlling large-whirl flow in a pumping station fore bay caused by a cross flow rate with piers of a bridge for a trash-eliminating machine on the water inlet side of the pumping station; specific to the aim of eliminating the air-suction vortex at the water inlet of the pumping station, the bridge for the trash-eliminating machine is arranged at a position which is 4D0 away from an inlet cross section of an inflow runner of the pumping station, the number of holes is 2 times the number of pumping station units, and the central lines of the piers are aligned with central lines of separating piers at the water inlet of the pumping station in a plane direction; partition walls are arranged between a check gate and the pumping station; the position, length and width of the bridge for the trash-eliminating machine and the lengths of the partition walls can be adjusted in a certain range. By adopting the method, the air-suction vortex at the water inlet of the pumping station under the condition of beeline layout of the gate and station can be effectively eliminated; the method has important significance to safe and stable running of the pumping station.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering pumping stations, and in particular relates to a method for eliminating the suction vortex of a water inlet of a pumping station under the condition that a control gate and a pumping station are arranged in a straight line. Background technique [0002] The pump station hub composed of pump station and control gate is widely used in the plains of our country. The control gate is mainly used to discharge a large amount of upstream flood in the flood season, and the pump station is used to pump the downstream water to the upstream for irrigation in the dry season. The in-line arrangement of gates and stations is one of the layout methods of pumping station hubs. Its characteristic is that the center line of the control gate is consistent with the center line of the river. The leading river of the station is obliquely intersected with the said river course. The advantages of th...

Claims

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Application Information

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IPC IPC(8): E03B5/00E03B11/00E02B1/02
CPCE02B1/02E03B5/00E03B11/00
Inventor 陆林广陆伟刚徐磊练远洋施克鑫洪飞
Owner YANGZHOU UNIV
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