Features of low-head pumping stations with horizontal-shaft sets

1975 ◽  
Vol 9 (5) ◽  
pp. 513-515
Author(s):  
Yu. A. Landau ◽  
G. T. Zavalinich
Keyword(s):  
Pumping Stations ◽  
Horizontal Shaft ◽  
Low Head

Numerical Simulation of the Internal Flow of a New-Type Shaft Tubular Pumping System

2011 ◽  
Author(s):  
Honggeng Zhu ◽  
Longyang Dai ◽  
Rentian Zhang ◽  
Guoxian Zhu ◽  
Linbi Yao ◽  
...  
Keyword(s):  
Flood Control ◽  
Energy Performance ◽  
Structural Features ◽  
Water Diversion ◽  
Small Scale ◽  
Pumping Station ◽  
Pumping System ◽  
Pumping Stations ◽  
Low Head ◽  
New Type

The structural features of a pumping system will directly affect the investment of the pumping station and its pumping efficiency. In the design and construction of low head or extra-low head pumping stations, bulb tubular pumping system and shaft tubular pumping system are widely adopted. So far all the 5 large tubular pumping stations finished or under construction took the form of rear type bulb tubular pumping system (bulb is arranged inside the discharge passage) in China’s Eastern Route Project of South-to-North Water Diversion. However, front type shaft tubular pumping systems (shaft is arranged inside the suction box) are more widely used in city flood-control pumping stations, which are characteristic of large amounts and medium or small scale. To improve the reliability of city flood-control pumping stations, the authors have invented a new-type shaft tubular pumping system featuring shaft suction box, siphon-type discharge passage with vacuum breaker valve as the cutoff device, which is possessed of such advantages as simpler structure, reliable cutoff and better energy performance. Taking an real pumping station in Yancheng city of China as an example, the computational fluid dynamics method was adopted in this paper to simulate the three dimensional turbulent flow of a model new-type tubular pumping system (impeller diameter D = 0.3m, rotational speed n = 1100r/min and specific speed ns is about 1500) and predict its performance, to improve the pumping system efficiency through hydraulic design optimization. Computation results show that the efficiency of the new-type shaft tubular pumping system reached 56.0% when the design head and discharge are 1.15m and 0.326m3/s respectively, and up to 68.8% when the maximum head and relevant discharge are 1.95m and 0.296m3/s respectively, having more extensive foreground for low-head, especially extra-low-head city flood-control pumping stations.

Powerhouse concrete quantity estimates

1983 ◽  
Vol 10 (2) ◽  
pp. 271-286 ◽  
Author(s):  
J. L. Gordon
Keyword(s):  
Vertical Shaft ◽  
Unit Size ◽  
Rapid Estimation ◽  
Horizontal Shaft ◽  
Different Types ◽  
Low Head ◽  
High Head

In this paper formulae are developed for the rapid estimation of the hydroelectric powerhouse concrete volume for nine different types of surface powerhouses, containing high head vertical or horizontal shaft impulse units; high head Francis units intermediate head Francis, Kaplan, or fixed blade propellor units; low head horizontal shaft tube, rim generator, or bulb units; and low head vertical shaft Kaplan or fixed blade propellor units. Heads range from a minimum of 4.65 m up to a maximum of 825 m. Unit size ranges from a minimum of 3000 kVA to a maximum of 615 000 kVA. The formulae are based on statistics derived from 93 hydro developments. In addition formulae are developed for generator casing diameters as a prerequisite to the development of a chart which indicates whether the turbine or the generator will influence powerhouse concrete volume for intermediate head powerplants. Finally, the formulae are used to compare concrete volumes for horizontal and vertical shaft low head powerplants. Keywords: hydroelectric powerhouse, concrete volume.

Analysis of energy efficiency of polder of pumping stations in a Slavsk district of the Kaliningrad region

2020 ◽  
pp. 15-20
Author(s):  
Yuriy Spirin ◽  
Vladimir Puntusov
Keyword(s):  
Energy Efficiency ◽  
Agricultural Land ◽  
Statistical Processing ◽  
Drainage Rate ◽  
Pumping Stations ◽  
Kaliningrad Region ◽  
Pumping Equipment ◽  
Excess Power ◽  
The Cost ◽  
Domestic Power

In the Kaliningrad region there are about 70 % of all polder lands in Russia. On these lands with high potential fertility, it is advisable to intensive agriculture. The area for the average moisture year is an area with excessive moisture, which indicates the need to maintain the rate of drainage on agricultural land. Many different factors play a role in ensuring the drainage rate, one of which is pumping stations and pumping equipment installed on them. An important parameter in the use of pump-power equipment is energy consumption, since in this industry it is a considerable expense item. Improving the energy efficiency of pumping stations on polders is a pressing issue today. At the majority of polder pumping stations, domestic power pumping equipment is installed with excess power and head of 4–8 meters, and a new one is selected based on the maximum possible head in a given place. In the Kaliningrad region, the energy efficiency of polder pumping equipment has never been analyzed. In this paper, a statistical processing of the geodesic pressure of water at the polder pumping stations of the Slavsk region for 2000–2002 was carried out. On the basis of these data and data on the hydraulic characteristics of pressure pipelines, the calculated water pressures were determined for the rational selection of pumping equipment. The calculation of the economic efficiency of pumps with optimal power compared with pumps of excess capacity. The results of the study can serve as a justification for the transition to the pumping equipment with less power and pressure, which will lead to a decrease in the cost of money for electricity.

EFFICIENT CHLORINATION SCHEDULE FOR A WATER DISTRIBUTION NETWORK WITH MULTIPLE PUMPING STATIONS

2017 ◽  
Vol 16 (5) ◽  
pp. 1071-1079 ◽  
Author(s):  
Andrei-Mugur Georgescu ◽  
Sanda-Carmen Georgescu ◽  
Remus Alexandru Madularea ◽  
Diana Maria Bucur ◽  
Georgiana Dunca
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Pumping Stations

Опыт использования частотных преобразователей на объектах ООО «Водоканал»

2020 ◽  
Author(s):  
Sergei, Rybel’ ◽  
V. Kuninin ◽  
S. Gerasimov ◽  
A. Bakushin
Keyword(s):  
Inrush Current ◽  
Electric Motors ◽  
Variable Speed ◽  
Variable Speed Drives ◽  
Technical Device ◽  
Advantages And Disadvantages ◽  
Subsequent Period ◽  
Pumping Stations ◽  
Current Water ◽  
Pumping Equipment

Приведен опыт применения частотно-регулируемых электроприводов на насосных станциях ООО Водоканал г. Новокузнецка. Приводятся преимущества и недостатки данного технического устройства. Показано, что в настоящее время использование частотно-регулируемых приводов позволило снизить потребление электроэнергии более чем на 20, уменьшить затраты на ремонт и обслуживание, повысить срок службы электродвигателей, уменьшить величину пускового тока, снизить утечки воды и нагрузку на насосное оборудование и трубопроводную арматуру. Применение частотно-регулируемых электроприводов оправдало себя и в тех случаях, когда требуется регулирование параметров для обеспечения технологии (регулирование скорости, производительности и т. д.), приведение параметров оборудования к требуемым значениям без его замены (в расчете на увеличение загрузки оборудования до номинала в последующий период), компенсация суточной неравномерности потребления воды.The experience of using variable speed drives at the pumping stations operated by Vodokanal LLC in Novokuznetsk is presented. The advantages and disadvantages of this technical device are specified. It is demonstrated that currently, the use of variable speed drives provides for reducing the energy consumption by more than 20, reducing the repair and maintenance costs for improving the service life of electric motors for reducing inrush current, water leaks and the load on the pumping equipment and pipeline valving. The use of variable speed drives has paid off even in case where adjusting the parameters to ensure the technology (velocity, performance, etc.) bringing the equipment parameters to the required values without replacing it (in order to increase the equipment load to the nominal value for the subsequent period) compensating for daily irregularities in water consumption are required.

HOW DO LOW-HEAD DAMS AFFECT SEDIMENT DEPOSITION AND TOXICITY IN INDIAN CREEK IN SOUTHERN INDIANA?

2018 ◽  
Author(s):  
Emily A. Brown ◽  
◽  
Martha Carlson Mazur ◽  
Cassie Hauswald
Keyword(s):  
Sediment Deposition ◽  
Low Head ◽  
Indian Creek

Efficiency Maintenance in Chicago Pumping Stations

1942 ◽  
Vol 34 (9) ◽  
pp. 1405-1414
Author(s):  
Frank J. McDonough ◽  
Paul Lippert ◽  
Julian M. Veggeberg
Keyword(s):  
Pumping Stations
Sign in / Sign up

Export Citation Format

Share Document