Designing a spiral pump for irrigation (original) (raw)

Improving the efficiency of irrigation pumps

THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE CONSTRUCTION MECHANICS, HYDRAULICS AND WATER RESOURCES ENGINEERING (CONMECHYDRO 2021 AS)

The article presents the main goals of the development of pumping stations based on the development of criteria and the allocation of priorities for increasing the efficiency of operation, which the authors formulate for the strategic, functional, morphological structure of the pumping system. The main criterion for research is the modernization of vane pumps, considering the operation of the main structures, their modes of operation and structures. The importance of internal flow in the flow path of the pump is emphasized with the use of new impellers, in which the blades rotate in three-dimensional space from axial to radial direction. If you combine a free vortex flow with a point source, you get a flow with a logarithmic spiral. The recommended design speed in the discharge nozzle of the pumps is-6-7 m / s, and to reduce losses, it is recommended to install a conical diffuser with a central angle of 10-12 ° at the discharge nozzle. Changing the hydraulic characteristics of the intake structure can be achieved: by improving the shape of its inlet part, for example, the bell of the front chamber, or by reducing the angle of the diffuser of the bell.

Development and Testing of a Spiral Type Water Wheel Pumping System

International Journal of Current Microbiology and Applied Sciences, 2020

India is an agricultural country and there are many rivulets, stream, rivers and elevated canals. Under drop/fall condition the water flows with great velocity. The kinetic energy of flowing water can be utilized for some useful work like pumping. The energy of flowing water can be utilized for lifting and carrying water for irrigation purposes, filing the small ponds and also for other rural works in remote areas. It can also be used at canal/nallah to operate a pumping system. A canal is frequently used for convenience and distribution of water for irrigation and to store water to farm pond/well. Nowadays, experiments are carried out by adopting the several methods for carrying water in remote areas. The spiral water wheel pump system could also be useful for carrying the water without disturbing the side bund of

Establishment of resource-saving modes of irrigation pumps

E3S Web of Conferences

The article presents the results of a study obtained in the process of testing the flow path of modernized centrifugal pumps. The authors proposed the device of new elements based on the calculation of the flow limited only by the side walls. The purpose of this work is to change and refine the calculations of the indicators of the modes of pumping units and the features of the performance of modern vane pumps. They are developed on the basis of the results of a large number of tests carried out by the authors of pump assemblies and operational surveys of irrigation pumping stations in Uzbekistan. The determination of the economically viable duration of the period of operation of pumping units, taking into account changes in energy characteristics and resource-saving operating technologies, was refined when measuring the efficiency of the upgraded pump D2000-100 under various operating modes. The creation of resource-saving methods of operation of pumping units that reduce or elimin...

Design, Manufacturing and Performance Analysis of Spiral Coil Pump

Applied Mechanics and Materials, 2013

The Spiral Coil pump is a non-conventional water pump which can be powered by wind energy or flow energy of river water. It can also be hand driven. It is very useful especially in rural areas for farming and irrigation purposes. Spiral Coil pump comes under the category of a low to moderate lift pump. In the present study, the hand operated experimental setup is designed and constructed to analyze the performance of the spiral coil pump under different parameters. The parameters considered are submerged ratios, rotational speed, layers of coils. For setup of 0.8 m wheel diameter with 7 number of coils, the maximum head obtained is in between 4.3 m to 5 m with maximum discharge 1200 lit/hr for single layer and 2280 lit/hr for double layer of the coil with efficiency range 20% to 74%.

IJERT-Performance Analysis of Four Scoop Water Wheel Spiral Pump

International Journal of Engineering Research and Technology (IJERT), 2016

https://www.ijert.org/performance-analysis-of-four-scoop-water-wheel-spiral-pump https://www.ijert.org/research/performance-analysis-of-four-scoop-water-wheel-spiral-pump-IJERTV5IS031269.pdf Spiral water wheel pump, a clean energy pump that discharges & lifts water up to certain height without using any electrical or fuel sources and additionally non-temperamental and maintenance problem is also eliminated. This would be an aid to rural areas. At present, a simple spiral pump is already is in use with single flexible PVC tubes coiled on a wheel frame where one end scoops up the flowing water and other is attached to the rotary union further discharging the water at required place. The proposed methodology of this model includes four spiral tubes scoops coiled on the same frame at 90 degrees of the inlet ends and connected to common outlet tube at rotary union resting about vertical axis. The wheel rotates with the help of chain drive and sprocket which requires an initial start with a handle. The projected model is giving a good result.

Experimental and theoretical studies of pumps of irrigation pumping stations

XXIV International Scientific Conference “Construction the Formation of Living Environment” (FORM-2021), 2021

The article presents the results of a study of the wear of individual pump elements, a decrease in their efficiency and significant losses. The nonidentical operation of the extreme and middle pumps was established. The uneven approach of water to the extreme units created reverse flows of water in the suction pipes, work with vibrations of modes close to cavitation. The modernization of the pumps improved the cavitation characteristics due to the elimination of the cavitation center at the impeller inlet in the area of the driven disk, which increased the reliability and durability of the pump. Diagnostics of irrigation pumps made it possible to substantiate proposals for the modernization of their main units and operating modes. The distribution of pumps according to the general level of vibration is shown, indicating the direction at which the maximum value of vibration displacement was recorded and the results of a comparative measurement of the vibration of the units of the pum...

Performance and operation suitability of developed hand and pedal pump for low-lift Irrigation

2015

This study was carried out in a laboratory to evaluate the performance and operational suitability of constructed hand and pedal pump for utilized in a small fragmented land. In market, there are many manually operated pumps but its have some problem on operation as well as cost involvement. Due to overcome these issues, different types of piston valves and check valves were constructed and tested at various suction heads in the laboratory to find out the best combinations of piston and check valves, which will gives more discharge rate, low input power requirement and high efficiencies. The pumps are constructed using local materials and skill. After several trials, Piston valve type-II (rubber flap mounted perforated cast iron disc of slot size 11mm and about 4 slot openings per 2.54 square cm) and check valve type-III (rubber flap mounted perforated cast iron disc of slot size 7 mm and about 10 slot openings per 2.54 square cm) were found to be suitable. According to the results, using above combination the average discharges of the pumps ranged from 113.58 to 68.71 lpm and 93.27 to 53.27 lpm against heads of 0.60 to 2.0 m for hand and pedal system, respectively; and the efficiencies of 45.57 and 46.53 percent were obtained for hand and pedal pumps, respectively, against a head of 1.65 m. During pedal system, the less input power was required than that of the hand system. Both in the hand and pedal pump operation, one adult man can operate it for a long time (more than 2 hours) continuously without being tired. It would be suitable to pump water from a shallow depth (<2 m) to irrigate small plots like vegetables and seed beds with less physical effort.

Flow Visualization Studies to Improve the Spiral Pump Design

Artificial Organs, 1997

Abstract: The spiral pump (SP) uses centrifugal and axial pumping principles simultaneously, through a conical shaped impeller with threads in its surface. Flow visualization studies were performed in critical areas of the SP. A closed circuit loop was filled with glycerin-water solution (40%). Amberlite particles (80 mesh) were illuminated by a planar helium-neon laser light (7 mW). The particle velocities were recorded with Kodak (TMAX-400) black and white film, and the flow behavior was studied with a micro video camera and color video printer. The flow visualization studies showed no turbulence or stagnant areas in the inlet and outlet ports of the SP. When using the impeller with one lead, at the top of the threads some recirculation appeared when the total pressure head increased. Two new impellers were made. One of them had the same conical shape with a thread having 2 leads. The second had a thread with 2 leads, but it also had a bigger cone angle. These modifications improved the pump hydrodynamic performance, decreasing the recirculation in pumping conditions that require pressures over 200 mm Hg.

Mixed-flow irrigation pump design optimization for Bangladesh

2017

Irrigation pumps are indispensable to the production of major crops in Southeast Asia. This study proposes a design method to optimize the design of a mixed-flow irrigation pump model in a costeffective and energy-efficient manner through a case study in Bangladesh. This method deviates from standard ones in industrialized nations to account for resource limitations in developing countries. Based on this approach, the paper optimizes four design parameters using numerical simulation, computational fluid dynamics, and analysis of variance. The results of numerical simulations reveal that the pumping strength may be increased from 0.286 to 0.348 (22%), while the efficiency may be increased from 40.2% to 54.2% (14.2%) when operated at 1500 RPM. This study also ranks the effectiveness of each design parameter and their interactions. An optimized design is presented for the current model, and an optimization procedure is developed for all axial-flow and mixed-flow pumps.

Improving Irrigation in Remote Areas: Multi-Objective Optimization of a Treadle Pump

Volume 2A: 40th Design Automation Conference, 2014

Water-lifting technologies in rural areas of the developing world have enormous potential to stimulate agricultural and economic growth. The treadle pump, a human-powered low-cost pump designed for irrigation in developing countries, can help farmers maximize financial return on small plots of land by ending their dependency on rain-fed irrigation systems. The treadle pump uses a suction piston to draw groundwater to the surface by way of a foot-powered treadle attached to each suction piston. Current treadle pump designs lift water from depths up to 7 meters at a flow-rate of 1–5 liters per second. This work seeks to optimize the design of the Dekhi style treadle pump, which has gained significant popularity due to its simplicity. A mathematical model of the working fluid and treadle pump structure has been developed in this study. Deterministic optimization methods are then employed to maximize the flow rate of the groundwater pumped, maximize the lift height, and minimize the vol...