Drain Pump Research Articles

PENERAPAN SENSOR FLOAT MAGNETIC LEVEL GAUGE PADA SISTEM MONITORING LEVEL CAIRAN LIMBAH

In the industrial world, especially in the metal processing sector, in this case in the steel roll production process, the problem faced is that controlling the pump motor in the hydraulic room is still done manually so that the waste water reservoir in the hydraulic room overflows which causes the floor to be slippery and dangerous. . By using the float magnetic level gauge method which consists of a reed switch as the main component to take height level readings. The neodymium magnet used in the buoy functions as a trigger to activate the reed switch when the buoy height reaches a certain level. The use of the voltage divider principle is to obtain variations in the sensor output voltage which is then converted into water level readings. The process of monitoring waste liquid levels uses LabVIEW software. Research has been tested in one of the departments in the metal processing industrial area which obtained the results that the sensor readings correctly provide an output signal to the microcontroller which functions as a relay controller which activates the drain pump motor when it reaches full level. With a monitoring system, users can control the system via computer without having to go directly to the field to activate the pump motor manually

Study on Calculation of Inlet Steam and Inlet Water Flow of Drain Pump of Low Pressure Heater

In the traditional drainage system of low pressure heater of thermal power unit, the measuring point of drain pump is usually added to directly measure the water and steam flow of low pressure heater of drain pump with instruments. This method is time-consuming and labor-intensive, and the measurement results are affected by many environmental factors. In order to solve this problem, this paper proposes an automatic calculation method based on the principle of heat balance.

Difference of clogging performance between radial and swept back impeller of axial pump

Abstract An axial pump which is used to pump water out of a river often sucks in solid bodies such as leaves and branches. These foreign substances may clog the passage and lead to dangerous conditions such as a decline in the performance of the pump. In this investigation, we conducted the clogging experiments by putting polyester strings in an axial drain pump which has two types of impellers, a radial blade impeller and a swept back blade impeller. By visualizing behavior of the strings in the pump using a high-speed video camera, we compared the anti-clogging performance between the two impellers and investigated the mechanism of clogging. The results of these experiments showed that the pass rate of the strings that flowed into the swept back blade impeller was higher than that in the radial blade impeller. It is because strings that are caught in the leading edge of the swept back blade tend to move to the tip side and be pulled towards the suction surface. In addition to the experiments, we carried out the simulations of these experiments using a CFD-DEM (Discrete Element Method) coupling analysis. The results were in good agreement with the experiments qualitatively.

Experimental characterization of a household heat pump tumble dryer noise

In this paper, an experimental approach for acoustic characterization of a household heat pump tumble dryer is developed. The main noise sources including BLDC motor, centrifugal fan, drain pump, and ventilation duct were identified using an acoustic camera survey based on beamforming, sound pressure level, directivity, and laser Doppler vibrometer vibration velocity measurements. In addition, noise reduction measures were taken, and sound power level and directivity measurements were used to evaluate the significance of the identified sources on the total noise emission. As a result, the A-weighted sound power level was reduced from 64.8 to 60.4 dB and the directivity pattern was improved. The proposed experimental approach for noise identification and the validation approach can be applied to other complex household appliances of similar size.

Automatic Aquarium Cleaner and Fish Feeder Based on Microcontroller Atmega8535

The design of an aquarium cleaner and automatic fish feeder based on the Atmega8535 microcontroller has been successfully carried out. Testing is carried out after all components are integrated into one including the overall program that has been made. Testing is done by running the system according to the procedure and observing the system's performance, starting with measuring turbidity and checking the water replacement schedule. The work processes running on the system are analyzed after testing. When the water turbidity level is high, the drain pump will activate and pump water out of the aquarium. After the remaining water level is about 25%, the drain pump will stop, and the filling pump will be active. The fill pump runs until the water level reaches 100% and then shuts down. After 10 minutes of filling the water, the servo motor will move and drop the fish feed into the aquarium.

Practical Transient State Assessment for Induction Motors Starting in Medium Voltage Networks

This paper presents a modelling and experimental verification system for a group of induction motors during starting in medium voltage networks including its effects on other nearby running units in different operating conditions. The simulation model is based on a real-life case study which is an agricultural drain pump station. The dynamic model was built with MATLAB®/SIMULINK® where a thorough performance analysis can be achieved. For system verification, the simulation curve results were compared with real-life data curves which were recorded by a suitable device located on worksite. The verified model was used to perform six practical scenarios based on the real station’s operating instructions. For each studied scenario, a group of parameters such as voltage dip, its duration and voltage regulation are discussed in detail and compared in a tabular form considering the recommended adjustments for the protection relay settings

Designing Early Warning Flood Detection and Monitoring System via IoT

Flooding is one of the biggest natural disasters that occurs frequently around the world. It can occur without warning and the after effect of it leaves great damage to the surrounding environment and exposes life threatening to citizen. Therefore, early flood detection and monitoring system with the implementation of Internet of Things and Global Positioning System is proposed in order to reduce the risks that may cause flooding. The aim of this project is to provide the information of a current water level in a drain. When water level increases to a certain level, the system will send a warning notification to users indicating three categories of water level, which are safe, warning and critical level. This system contains an ultrasonic sensor to detect the current water level and at the same time allows users to observe the period of the water level from their phone so that users are more aware of when flooding ought to happen. Moreover, the system consists of a flooding avoidance method that requires the usage of a solenoid as a shutter valve of the drain and water pump to pump out excessive water flow to a suitable place for water release purposes.

An analytic study on evaluation for the structured safety according to the hydraulic pressures in the hybrid system

Abstract Currently, many advanced countries are required to develop a new concept drainage system that meets the increased design standards in order to reduce the economic and casualties caused by deluge floods due to the grown understanding of abrupt climate changes. For example, the existing water drain pump station installed in Korea needs a large amount of land as well as there are many restrictions on the installation. In the case of hybrid system that can be integrated both gate and pump, a new and simplified drainage installations can be provided by integrating pumps, floodgates, and switchgear. Finite Element Analysis (FEA) is a numerical technique method which commonly employed for solving complex problems. It is mainly preferred during development which involves complicated geometry, the corresponding material property changes that cannot be obtained analytically. Until now, the FEA model has mainly been employed using both linear and nonlinear analyses of the structural response due to external loads giving the resulting stresses and deflections. Structural analysis has been made of a hybrid system. The main objective of this paper is to develop a FEA model to apply for the application of the actual situation in the hybrid system which integrated both gate and pump. The software used for the FEA is the general-purpose commercial program, ANSYS. The four cases to study the stresses and deflections in a hybrid system according to bolt diameter with a relatively simple model were selected. The calculated results can be reduced the short engineering time, workforce and cost, and ensured that the same quality is obtained as compared with the accurate model

Sistem Otomatisasi Sirkulasi dan Penggantian air Kolam Menggunakan Arduino Uno untuk Peternakan Ikan di Sukabangun Kabupaten Ketapang

This tool detects turbidity by paying attention to the resistance value on the LDR sensor that is the less light received by the LDR sensor, the higher the resistance so that at some level will appear on the LCD whether classified as turbid, very turbid, clear or very clear. While the drain pump will work if the water is considered unhealthy for fish, for example, turbid water is even very turbid and the pump will die if the ultrasonic sensor has got the maximum distance ie in this system it is> 21 cm Filling pump will work if pump 1 is dead and will die if has reached the minimum distance of <= 7 cm. While for the PH value can be seen through a probe dipped in the pool and the results can be known on the LCD, if the water is detected to have an abnormal PH then the pump will drain automatically until the water PH state becomes normal and the automatic feeder system is by adjusting the delay of the servo motor. From the tests carried out, it was found that this tool can detect the level of turbidity of water whether the water is classified as very turbid, turbid, less clear, clear and if what is detected is very turbid then the pump will drain and refill automatically. This tool can also detect the PH value of water which will command the drain pump to work if the water PH is not normal as programmed. and can feed automatically whether 3,4,5 or 6 times a day.

Analysis and treatment of shutdown due to high condenser pressure towards ultra-supercritical 660MW turbine

During the normal operation of an ultra-supercritical 660MW steam turbine in a power plant, the pressure of condenser gradually increases, then reduced electrical load, condenser pressure continued to rise to the protection action, the unit shutdown. Through on-site inspection and inspection of the operation curve, it was found that after the water level of the collecting water tank of the boiler’s starting hydrophobic system was zero, the B hydrophobic pump was still closed and the outlet electric door was not closed. The fault of the B hydrophobic pump’s trip relay was diagnosed and investigated, and the cause of the fault was accurately analyzed. After replacing the tripping relay and adding the tripping logic of the drain pump, the unit can be restarted and run normally.

PROTOTIPE PEMBERI PAKAN IKAN DAN PENGGANTIAN AIR PADA AKUARIUM BERBASIS MIKROKONTROLER ATMEGA328P

Technological developments have encouraged many human lives in automatic matters. One of the uses of the rapidly developing electronics field is the application of household appliances. This study will be made a prototype of fish feed and water replacement in the aquarium of ATmega328P microcontroller based. This prototype aims to facilitate feeding of fish and replacing water in the aquarium. The sensor reading is using an ultrasonic sensor to control the amount of fish feed which when the feed runs out will be marked with a buzzer that lights up. The system for regulating fish feeding and replacement of water is regulated by the DS1307 Real Time Clock IC with a display in a 20x4 cm LCD. A valve opening for fish feed containers uses a servo motor. The program used in designing this prototype is to use the C Programming Language. The results achieved in this study are fish feed schedules and water changes can be arranged with a switch button with a twice daily feeding schedule and water replacement every three days. Another condition that is achieved is the servo motor and the water drain pump can work according to the schedule of the time that has been arranged. The conclusion of this research is that the prototype of fish feed and water replacement can already be implemented using the ATmega328P microcontroller. The fish feeder prototype can realize wave reflections from the ultrasonic sensor when the feed has run out, and it will automatically move the servo motor to open the valve, and the buzzer will sound if the fish feed is below 20%.

Numerical study of air-entraining and submerged vortices in a pump sump

Numerical detection of harmful vortices in pump sumps, such as an air-entraining vortex (AEV) and a submerged vortex (SMV), is crucially important to develop the drain pump machinery. We performed numerical simulations of the benchmark experiments of the pump sump conducted by Matsui et al. (2006 and 2016) using the OpenFOAM and compared the simulation results with the experimental data considering the effects of turbulence model, grid density and detection method of the vortices. We studied the threshold of the gas-liquid volume fraction of the VOF method and the second invariant of velocity gradient tensor to identify AEV and SMV. The methods proposed in the present paper were found to be very effective for the detection of the vortices, and the simulation results by RANS with the SST k-ω model successfully reproduced the experimental data. LES with the Smagorinsky model, however, was sensitive to the grid system and difficult to reproduce the experimental data even for the finest grid system having 3.7 million cells in the present study.

Assessment of the Physico-chemical Characteristics and Water Quality Analysis of Mariout Lake, Southern of Alexandria, Egypt

The present study objectively conducted to analysis the physico-chemical parameters and water quality of Mariout Lake water may be changed by several factors in the last decades as a result of anthropogenic activities. the water samples were collected from five sampling stations during the (June to November 2014-2015). The range of physico-chemical parameters were observed Temperature (15.1-32.6)°C, Conductivity (280-380) μ mhos/cum, Total Dissolved Solid (345 -388) mg/l, pH (7.16-8.6), O2 Sat 33.2-97.8%, Free alkalinity (3.34-6.73) mg/l, Total alkalinity (120-265) mg/l, DO (2.14-5.63) mg/l, BOD (2.6-15.2) mg/l, COD (7.4-15.6) mg/l, Chloride (13.6-33.2) mg/l, Calcium hardness (81.8-146.4) mg/l, Total hardness (100-289) mg/l, Nitrate-nitrogen (7.4-11.1) μM, Ammonia (87.0-234.7) μM, N/P ratio (13.4-32.7) μM and Silicate (14.6-221.9) μM during the study. It was concluded that temperature, pH, total alkalinity, dissolved oxygen, biological oxygen demand, chemical oxygen demand, calcium hardness beyond the prescribed limits of WHO. We found that two identified sources are the main origin of most pollutants in this Lake, namely: El-Kalaa drain and industrial activities in Alexandria City. From the data of water quality index (WQI) and other parameters indicates that site V, EL-Mex Bay is more polluted than the other sites (from El-Umum Drain, El-Umum outlet, El Kalaa and El-Mex Pump station). For the sake of this work it is better first to give a preface about the general characteristics of the whole Mariout Lake, and indicated for the quality of the aquatic ecosystem is of great interest to the entire world. Introduction of different waste products into estuaries and seas especially those in industrial and population centers has lead to significant increase in the level of contamination by different pollutants.

Thermodynamic and exergoeconomic analysis of Çayırhan thermal power plant

It is an indisputable fact that much saving could be achieved provided that the efficiency of thermal plants, which bear a huge share in the distribution of generated energy, could be increased by making certain improvements and minimize the losses. These practices as a natural consequence shall provide useful benefits to find a solution for energy problem.In the current study exergy and thermoeconomic analyses of Turkey-based Çayırhan thermal power plant have been conducted. Thermodynamic properties of the inlet and outlet points of each unit in thermal plant have been specified via EES package program. With the help of obtained thermodynamic properties, thermal and second law efficiencies of thermal power plant have been found respectively as 38% and 53%. In thermal power plant, the highest amounts of exergy losses are witnessed alternatively in; the boiler, turbine groups, condenser, heater group and pump groups. The highest amount of exergy loss costs are seen respectively in boiler, turbine group and condenser. When exergoeconomic factors are examined, the highest factor has been measured in turbine group, which is followed respectively by boiler and condenser drain pump.

Subarachnoid pharmacodialysis for central nervous system disorders

We postulate that alternating use of microcontroller-regulated delivery and drain pumps connected to one or more sealed subarachnoid fluid exchange ports can maintain localized bi-directional molecular fluxes across pia mater covering multiple diseased areas of the cerebral cortex or spinal cord. This system enables local irrigation with drugs and drainage of endogenous neurotoxic molecules normalizing regional neurochemistry and restoring physiological function. Viewing the pia mater as an endogenous dialysis membrane, testing this hypothesis requires demonstrating: (a) benefits of removing neurotoxic molecules from diseased cerebral cortical or spinal areas via subarachnoid dialysis, (b) neuropharmacological effects of subarachnoid drug delivery and (c) evaluating additive effects of combining the two, as a novel, “pharmacodialysis” procedure. Our supporting experimental data show that this procedure can drain proinflammatory cytokines from the neocortex to the subarachnoid cerebrospinal fluid in rats and can prevent focal seizures in monkeys through subarachnoid delivery of muscimol to their neocortex. Subarachnoid pharmacodialysis allows effective site-specific treatment and microcontroller-regulated timing responsive to the evolving course of a disease and can be performed with bedside systems or fully implanted devices. The procedure provides a two-pronged, combined therapy for traumatic brain and spinal cord injuries, cortically localized epilepsy, stroke and tumors as well as psychiatric disorders such as Alzheimer’s disease with pathology of the association cortex. Therapeutic subarachnoid pharmacodialysis drainage of endogenous molecules from the neocortical interstitial space offers unprecedented opportunities to gain new insights into the neurochemistry of the human neocortex in real-life conditions over months or even years.

에어컨 배수펌프 설치 실태 및 개선방안 분석 - 창원시를 중심으로

This paper was carried out to survey fire hazard and improvement at the drain pump in air-conditioners. Based on the results of analysis, the proposal of electrical accidents prevention and a construction improvement are as follows. A power connection of the drain pump has two types, an electrical outlet type and direct connection type at control board of air-conditioner. The electrical outlet types need a bulletin sign or education as malfunction of the drain pump include an additional accidents, current leakage and overflowing with water on the floor from breaker trip by exterior cause and breaker off by mistake of worker. On the other hand, the direct connection types prevent a power interruption as exterior cause, but it has some trouble, cut of ground cable and without protection device. Usually it doesn’t work by electrician when air-conditioner and the drain pump power work. Therefore an education or countermeasures are recommended for not electrician. Generally malfunction of the drain pump causes accumulated materials into the tank. Even though the accumulated materials lead to an overheating and burning as failure of detector occur an idling, periodic inspection of the air-conditioner filter and the drain pump tank prevent the trouble.

Determining the impact of basic geometric parameters drain pump NM 10000-210 on its performance

Determining the impact of basic geometric parameters drain pump NM 10000-210 on its performance

Application of variable-frequency electric drives for controlling the drain pumps of low-pressure heaters used in turbine units at cogeneration stations

Results obtained from equipping the drain pumps of low-pressure heaters used in a T-250/300-23.8 turbine unit with a standard adjustable drive are presented. It is shown that the use of this drive allows the level in the high-pressure heater to be efficiently controlled in different modes of operation with smaller consumption of energy for station auxiliaries.

105 排水ポンプ用逆流防止弁の急閉鎖時に発生する衝撃と騒音(振動・騒音の実験・解析技術(2),騒音・振動改善技術)

105 排水ポンプ用逆流防止弁の急閉鎖時に発生する衝撃と騒音(振動・騒音の実験・解析技術(2),騒音・振動改善技術)

Introduction Process of Agricultural Drain Pump and Genealogy of the Technology in Watarase Retarding Area since Modern Ages

Introduction Process of Agricultural Drain Pump and Genealogy of the Technology in Watarase Retarding Area since Modern Ages