CN207538118U - A kind of column training wall for improving lateral intake pumping plant fluidised form - Google Patents

Abstract

The utility model patent is a column diversion wall for improving the flow state of the lateral water inlet pumping station, which includes several water inlet pools, the front part of which is the front pool, and each water inlet pool is equipped with a column diversion wall, and The column diversion wall is located at the front end inside the water inlet pool; the horizontal length of the column diversion wall is 0.3 times the width of the water inlet pool, and the distance between the center point of the column diversion wall and the side wall of the water inlet pool is 0.5 times the width of the water inlet pool. The thickness of the diversion wall is 0.1 times of the width of the water inlet pool, and the height of the column diversion wall is the same as the water depth in the water inlet pool. Through the utility model, the column diversion wall determined by the utility model can better improve the internal flow state of the water inlet pool, and improve the uniformity of the flow velocity in the water inlet pool.

Description

A column diversion wall to improve the flow state of lateral inflow pumping station

technical field

The utility model patent relates to a lateral water inlet pumping station project, in particular to a column diversion wall for improving the flow state of a lateral water inlet pumping station, which belongs to the technical field of pumping station engineering.

Background technique

The water inlet pool is a structure that directly absorbs water from the suction pipe of the water supply pump. It has a free water surface and is usually used in small and medium-sized pumping stations. The main function of the inlet pool is to further adjust the water flow entering from the forebay to provide good water inlet conditions for the pump inlet. When the terrain conditions are limited and the forebay cannot be arranged in the form of positive water inflow, the forebay with side inflow often becomes an alternative arrangement. The water flow in the lateral inlet forebay is generally oblique to the axis of the inlet pool. After the water flow enters the inlet pool, it is easy to form backflow or vortex, and the flow distribution is uneven.

Backflow and vortex are easy to be generated in the water inlet tank of the side-inlet pumping station, so some studies focus on rectification measures for the water inlet forebay and vortex elimination measures inside the water inlet structure of the pumping station, but the water inlet tank of the pumping station will still There are phenomena such as large-scale backflow and flow disorder, which reduce the energy performance and cavitation performance of the pump, and affect the normal operation of the pump.

At present, for the problem of the internal flow state of the forebay and the inlet structure of the lateral inflow pumping station, the existing research results mostly focus on a single lateral inflow forebay or inlet pond, and the single inlet pond is a single unit, The content mainly focuses on the research on the rectification measures of the pumping station's inlet forebay and the research on the internal vortex elimination measures of the pumping station's inlet structure by using CFD software or physical model test methods. In the utility model, a column diversion wall is arranged in the water inlet pool, so that the water flow in the water inlet pool tends to be uniform, and the specific size and position of the column diversion wall are given. After being rectified by the column diversion wall, the water flow inside the inlet pool is divided into two streams, which are evenly distributed on both sides of the column diversion wall. The flow velocity distribution inside the inlet pool is more reasonable, which can improve the internal flow state and flow rate of the inlet pool of the lateral inlet pumping station. Provide some reference.

Utility model content

The purpose of this utility model is to solve the above problems and provide a column diversion wall to improve the flow state of the lateral water inlet pump station. A column diversion wall with a fixed position and size is set in the water inlet pool, and the column diversion wall improves The internal flow state of the water inlet pool, so that the flow velocity distribution inside the water inlet pool can be improved to a certain extent.

The purpose of this utility model is achieved in this way, a column diversion wall to improve the flow state of the lateral water inlet pumping station, which is characterized in that: it includes a number of water inlet pools, the front part of the water inlet pools is a forebay, and each water inlet The pools are equipped with column diversion walls, and the column diversion walls are located at the front end of the water inlet pool; the horizontal length of the column diversion walls is 0.3 times the width of the water inlet pool, and the distance between the center point of the column diversion walls and the side walls of the water inlet pool The distance is 0.5 times of the width of the water inlet pool, the thickness of the column diversion wall is 0.1 times of the width of the water inlet pool, and the height of the column diversion wall is the same as the water depth in the water inlet pool.

The several water inlet pools are arranged side by side at the rear of the forecourt and communicate with the forecourt.

The utility model has a reasonable and simple structure, is easy to manufacture, and is convenient to use. Through the utility model, a column diversion wall for improving the flow state of a lateral water inlet pump station is provided. The width L is the basic quantity, the horizontal length of the column diversion wall is 0.3L, the distance between the center point of the column diversion wall and the side wall of the inlet pool is 0.5L, the thickness of the column diversion wall is 0.1L, and the column diversion wall The height is equal to the water depth.

The utility model has the advantages of simple and reasonable structural design, small engineering quantity, and convenient use. The utility model can effectively improve the water flow distribution in the water inlet pool, and make the water flow shrink and flow to both sides roughly uniformly, and then spread to the side wall, effectively overcoming the deflow , Backflow problem.

The utility model patent can avoid large-area reflux around the trumpet tube of the water pump and in the water inlet pool by arranging the diversion wall of the column in the water inlet pool, and the water flow in the water inlet pool is symmetrically distributed. The column diversion wall determined by the utility model can better improve the flow state inside the water inlet pool, and improve the uniformity of the flow velocity in the water inlet pool.

The utility model can be widely used in the construction and transformation of small and medium-sized pump station projects, provides reference for the improvement of the internal flow state and flow velocity of the water inlet pool of the lateral water inlet pump station, reduces the probability of bad flow state inside the water inlet pool, and provides a good service for water pumps. Inlet water provides good inflow conditions. The utility model has reasonable and simple design, convenient construction, and is convenient for wide application and implementation.

Description of drawings

Fig. 1 is a schematic diagram of the planar structure of the lateral water inlet pumping station in the utility model.

Fig. 2 is a schematic diagram of the arrangement of the guide wall of the central column of the present invention.

Fig. 3 is a structural schematic diagram of the guide wall of the central column of the present invention.

In the picture: 1 water inlet pool, 2 column diversion wall, 3 front pool.

Detailed ways

Below in conjunction with accompanying drawing and description of drawings, the utility model will be further described.

A column diversion wall for improving the flow state of a lateral water inlet pumping station, comprising a number of water inlet pools 1, the front part of which is a front pool 3, and each water inlet pool 1 is provided with a column diversion wall 2, And the column diversion wall 2 is located at the front end of the water inlet pool 1; the horizontal length of the column diversion wall 2 is 0.3 times the width of the water inlet pool 1, and the distance between the center point of the column diversion wall 2 and the side wall of the water inlet pool 1 is the water inlet pool 1 0.5 times of the width, the thickness of the column diversion wall 2 is 0.1 times of the width of the water inlet pool 1, and the height of the column diversion wall 2 is the same as the water depth in the water inlet pool 1. Several water inlet pools 1 are arranged side by side at the rear of the front pool 3 and communicate with the front pool 3 .

Through the utility model, by setting up the column diversion wall 2 in the water inlet pool 1 of the lateral water inlet pumping station, the size of the diversion wall 2 takes the width of the water inlet pool 1 as the basic reference amount, and is carried out according to the technical scheme of the utility model After the geometric dimension is designed, the vertical formwork is poured and formed on site. Through a column diversion wall set in the water inlet pool of a pump station, the internal flow state of the water inlet pool can be effectively improved. The small-scale return flow near the right side wall of each water inlet pool disappears, and the streamlines are smooth and symmetrically distributed, which can effectively improve the water inlet flow. Fluid disorder in the pool.

Claims (2)

1. A column diversion wall for improving the flow pattern of a lateral water inlet pumping station, which is characterized by: including several water inlet pools (1), the front part of which is a forebay (3), each inlet pool The pools (1) are equipped with column diversion walls (2), and the column diversion walls (2) are located at the front end inside the water inlet pool (1); the horizontal length of the column diversion walls (2) is the water inlet pool ( 1) 0.3 times the width, the distance between the center point of the column diversion wall (2) and the side wall of the inlet pool (1) is 0.5 times the width of the inlet pool (1), and the thickness of the column diversion wall (2) is the inlet pool ( 1) 0.1 times the width, the height of the column diversion wall (2) is the same as the water depth in the inlet pool (1). 2. A column diversion wall for improving the flow state of a lateral water inlet pumping station according to claim 1, characterized in that: the several water inlet pools (1) are arranged side by side at the rear of the front pool (3), and Connect with the front pool (3).