(Etanorm pumps, pipes, valves and control units in the Stadtlohn-Hundewick waterworks)

More water pressure for Münsterland

Maintaining a high level of drinking water quality has been a top priority in Germany for decades, and almost all water supply utilities deliver this on a reliable basis. But another factor plays an equally important role in water supply: pressure. While water pressure drops and strong fluctuations are certainly a nuisance, they can also cause damage to appliances and equipment in households and industry. In order to avoid this, many water supply utilities have to adapt their pumping equipment to changing demand levels.

The project: Supplying Stadtlohn with sufficient water pressure

Stadtlohn’s utility SVS-Versorgungsbetriebe was struggling with fluctuating water pressure. At peak load times, water supply could no longer be guaranteed. Following a pressure drop of approx. 1 bar lasting over 3 hours, the decision was finally taken to redesign the clean water pumping station at the Stadtlohn-Hundewick waterworks. An additional objective was to achieve energy savings for the clean water pumps.

The customer: SVS-Versorgungsbetriebe

SVS-Versorgungsbetriebe provides the public energy and drinking water supply for the towns of Stadtlohn, Vreden and Südlohn (hence the name SVS), which are located in the western Münsterland region in the northwest of North Rhine-Westphalia. As well as providing electricity, natural gas and fibre-optic lines, SVS-Versorgungsbetriebe delivers an average of 2.9 million m³ of water per year to the local population as well as to industry, trade and agriculture via a network of pipelines stretching over 472.2 km.

(Multitec V pumps, pipes, valves and control units in the Stadtlohn-Hundewick waterworks) — Extremely space-saving, yet powerful: The Multitec V (front)

The challenge: Optimum water transport in confined spaces

The supply networks Stadtlohn and Südlohn lacked sufficient drinking water reserves. When quantities of around 400 – 440 m³/h were required, pressure dropped to 32 mWC and the clean water pumps were unable to transport the required quantity, despite the head of 42 mWC being clearly below their design point which at the time was known to be 54 mWC. The redesign also had to account for the extremely limited space available in the waterworks, which ruled out most horizontally installed pumps on the market.

The solution: Proven pumps with state-of-the-art control technology

The engineering company H2U was entrusted with the task of performing a fault analysis and developing a new plan. An extensive review of the performance data and an energy efficiency analysis of the waterworks yielded the following insights: The system lacked redundancy, offered unfavourable efficiencies and could not cope during high-demand periods as the pumping station was not designed for flow rates of more than 60 m³/h – even though these occurred 15% of the time.

The engineers decided to modify the piping and flow rates, with the work being carried out by the company A+H Anlagentechnik. The following factors were of primary importance: The system needed to become more flexible and energy efficient while offering a higher level of redundancy. In the Multitec V, KSB was able to offer a very efficient pump with frequency inverter (FI) which can also be operated via the latest high-tech interfaces. In addition, the pump can be installed vertically and thus fit perfectly into the confined space available. From a cost-benefit perspective, this was the best solution on the market.

The entire waterworks now employs KSB SuPremE^® motors controlled by frequency inverters. The water flow rates of the pumps controlled via frequency inverters can be read on the PumpDrive display. The frequency inverters can be operated very easily by means of a multi-line display and can also be set via Bluetooth using a smartphone. Using KSB SuPremE^® motors also delivered the desired energy savings. Here, the frequency inverters are additionally used to calculate the pumped flow rates, removing the need to purchase electromagnetic flow meters.

The cooperation of all parties involved went so well that KSB has already converted another waterworks in Vreden to using KSB SuPremE^® motors, PumpDrive 2 and KSB Guard.

Figures I Data I Facts

System: Waterworks
End user: SVS-Versorgungsbetriebe

Project data:

2x Multitec V
3x Etanorm
5x PumpDrive
5x PumpMeter
5x KSB Guard

Products used

Multitec

Dokumenti

Višestepena horizontalna ili vertikalna centrifugalna pumpa segmentne konstrukcije u verziji s osnovnom pločom i blok verziji, s aksijalnim ili radijalnim usisnim nastavkom, livenim radijalnim radnim kolima i sistemom za regulaciju broja obrtaja montiranim na motor. Dostupna je ATEX varijanta.

Detalji

Etanorm/Etanorm MyFlow/Etanorm Pro

Dokumenti

Jednostepena pumpa sa spiralnim kućištem u procesnoj verziji, sa radnim karakteristikama i glavnim dimenzijama prema EN 733, sa IEC kompatibilnim pogonskim sistemom PumpDrive 2 sa jedinicom SuPremE ili PumpDrive 3 klase efikasnosti IE4/IE5 prema IEC TS 60034-2-3:2016 i frekventnim pretvaračem integrisanim u motor. Pumpa ima izmenljive prstene s prorezom, zatvoreno radijalno kolo sa prostorno zakrivljenim lopaticama, jednostrukim i duplim prstenastim kliznim zaptivkama prema EN 12756, vratilom u oblasti zaptivača vratila sa izmenljivom čaurom vratila. Procesni dizajn omogućava demontažu spojnice, nosača ležaja i radnog kola bez potrebe da se kućište pumpe odvoji od cevovoda. Tačke fiksiranja u skladu sa IEC 60072, dimenzije kućišta prema DIN V 42673 (07-2011). Dostupna je ATEX varijanta. Daleko ispred zahteva po pitanju efikasnosti iz direktive ErP.

Detalji

PumpDrive 2/PumpDrive 2 Eco

Dokumenti

Frekvencijski pretvarač sa samohlađenjem, izrađen po modularnom principu, koji omogućava kontinualnu promenu broja obrtaja asinhronih i sinhronih reluktantnih motora putem analognih standardnih signala, industrijske magistrale ili jedinice za rukovanje. Zahvaljujući samohlađenju uređaja PumpDrive, moguća je montaža na motor, zid ili u razvodni ormar. Regulisanje do 6 pumpi bez dodatnog regulatora.

Detalji

KSB Guard

Dokumenti

Pametna i sveobuhvatna usluga nadzora pumpi i drugih rotirajućih mašina – dostupna 24 sata 7 dana u nedelji i nezavisno od proizvođača. Zajedno s KSB-om ostvarite prediktivno održavanje i profitirajte od potpune transparentnosti, povećane raspoloživosti, veće pouzdanosti rada i efikasnog rada (neregulisanih pumpi). Važnim radnim podacima, poput vibracija, broja radnih sati i opterećenja (neregulisanih pumpi), možete u bilo kom trenutku i s bilo kog mesta pristupiti pomoću opcije KSB Guard. Pored toga, ako dođe do bilo kakvog odstupanja od normalnog režima rada, odmah će biti poslato obaveštenje o tome putem veb portala KSB Guard / aplikacije. Uz to, stručnjaci centra za nadzor kompanije KSB pružiće vam podršku pri analizi uzroka.

Detalji