Supplier sign in
Home
STAY INFORMED
Subscribe to our monthly newsletter.
Your email address will never be disclosed to any third party.
Read our privacy notice.

   

Specialist article
11.05.2022  |  1487x
Share this item
Allow (tracking) cookies from YouTube and Vimeo to watch videos

Process optimization for hydropower plants

Solutions in the dam - Compact limit switch for process optimization for hydropower plants as a backwater detector for wood chip conveyance.
One of the largest energy supply companies in the UK was looking for modern equipment for its northern dam with flexible metering technology. The electricity and natural gas supplier for local households and businesses has been focusing on hydropower generation for several years, in addition to wind power.
The centrepiece of the dam’s hydropower plant is the installed wood chip system, which was recently implemented to curb pollution in the dam. Accumulated wood chips are transported to a designated storage area via a series of chain conveyors. These chain conveyors need to be monitored with modern and robust measurement technology. Namely, an indicator that functions as a full detector is required in the transfer chutes in order to detect a blockage with the wood chips in good time.

Full detection for wood chip conveyance

Together with the subsidiary UWT (UK) Ltd in Shrewsbury, a safe solution was found after several tests with oscillating probes that work according to the vibration principle. The Mononivo® MN 4020 with tube extension was installed in the transfer chutes and reliably detects the wood chips. The bulk density of the chips is 450 g/l, the process temperature is up to 80°C (176°F). Due to the application, there is high humidity in the process area. The process pressure is around 0.8 bar (11.6 psi). The corrosion is relatively severe and required a detector with a high surface quality. With the adjustable sensitivity and the small 1 inch connection threads, the stainless steel single rod probe could be perfectly configured to the application. Optimal for use in wood chips and wood shavings is the fact that, due to the design, no material can accumulate on the sensor arm, which prevents faulty switching in the long term.

The vibrating rod is stimulated to vibrate by piezo elements. Material in contact stops the vibration, causing a change in voltage in the piezo elements. This is registered electronically. A switching output is activated. The vibration also causes a self-cleaning of the level probe to a certain extent.

The dam, with its height of 16.5 metres and length of 139 metres, is one of the most important energy suppliers for the region. With the installation of the corrosion-resistant min / max detectors, the process flows in the hydroelectric power plant could be optimised quickly and easily with regard to the overfill protection of the wood chip system.

Company information

UWT GmbH
UWT GmbH
The UWT has become one of the leading suppliers of measurement technology on the world market today for the level detection in silos and tanks for material manufacturing processes. When UWT started, almost 40 years ago, with the development of ingenious products. UWT supply level limit and content measurement sensors for bulk solids and liquids. A company reaches such a position only if the following key elements interact: Sound management, good understanding of the needs of the markets, innovative product solutions, skillful investment and above all, committed and dedicated employees. Different measurement techniques are used within a variety of industries depending on the medium and application in question.UWT products represent quality, flexibility and reliability in over 90 countries across the world. Having successfully solved over 1 mio. applications within the bulk solids sector, UWT has expanded still further by introducing a new and innovative product range for the liquids market which is delivering reliable solutions for applications in this area. The company is certified ISO 9001:2015 and constantly expands its portfolio of product certifications (ATEX, EHEDG, FM, CSA, INMETRO, etc.) particularly with regard to the international markets. The development, production and sales departments are located at our headquarters in Germany, with a further production site in Malta. UWT has also established successful sales offices in the USA, UK, China, India, Brazil and most recently Mexico. With this global orientation, it is possible to serve and support customers with complete competence and flexibility. From development through production to final assembly and comprehensive technical advice, UWT can offer a complete service from a single source. The strongly held belief by the CEO`s Uwe Niekrawietz, Markus Schalk and Andreas Haug is for the welfare of over 200 employees world-wide: „Healthy and happy employees can make the unbelievable happen“. Our portfolio includes sensors for liquids: * Capanivo® 7000/8000 - capacitive sensors * RFnivo® 8000 - capacitive sensors * NivoCapa® 8000 - capacitive sensors * NivoGuide® 8000 - TDR guided radar * NivoRadar® 7000 - non contact radar sensor Sensors for bulk solids: * Rotonivo® - rotary paddle * Vibranivo® - vibrating fork * Mononivo® vibrating rod * Capanivo® 4000 - capacitive sensors * RFnivo® 3000 - capacitive sensors * NivoBob® 3000/4000 - electromechanical lot system * NivoRadar® 3000/4000 - contact free radar sensor * NivoGuide® 3000 - guided radar sensor (TDR) NivoTec® - visualisation systems
Last update: 14.10.2024

Related trade show

More items

UWT searches people for permanent employment, training or study UWT GmbH offers career opportunities. See what is waiting for you at UWT – Whether permanent position, apprenticeship or study - become part of our team.
UWT searches people for permanent employment, training or study
UWT GmbH offers career opportunities. See what is waiting for you at UWT – Whether permanent position, apprenticeship or study - become part of our team. There are many ways to help shape the success of UWT. UWT as an employer - What makes a good employer? We take responsibility and create the appropriate framework for our employees to develop their potential and competences and to fully contribute to their work. Our strategically oriented and methodically secured personnel work is the basis for excellent performance and the source of motivated and satisfied employees.
14.10.2024  |  2451x  |  Job vacancy  |   | 
Silo management with NivoTec® for grain mills and their customers Bakeries, the customers of the mills, often place their orders to late and the mills are faced with having to supply material immediately in order to avoid production stop at the bakeries.
Silo management with NivoTec® for grain mills and their customers
Bakeries, the customers of the mills, often place their orders to late and the mills are faced with having to supply material immediately in order to avoid production stop at the bakeries. In Germany alone there are more than 260 large flour mills, in Asia the grain market is significantly greater and a very important industry. All around the world the situation is similar: Well-planned routes and carefully calculated stock levels are vital to achieve max. cost optimization during the material delivery process, however these are more than often jeopardized by daily reality. This leads to unnecessary logistics costs caused by multiple deliveries and ultimately to an increase in costs for sides, the supplier and the customer. This is obviously in no one’s interest. But why are we confronted with these “fire-fighting” situations and how can they be avoided? Lack of storage management in bakeries Even bakeries with multiple storage silos often do not have an automated level monitoring system to control their inventory levels. Therefore these stocks have to be checked manually on a regular basis and an order has to be triggered to the flour supplier
02.12.2021  |  1740x  |  Product description  |   | 
International approval of UWT products Whether ATEX, ISO 9001, or other important approvals.
UWT can offer a lot
International approval of UWT products
Whether ATEX, ISO 9001, or other important approvals. UWT can offer a lot What distinguishes UWT from others? - The reliability and the international certifications and approvals allow the customers and users of UWT products a safe use as level measuring instruments in different industries and applications. The various conditions and requirements are fulfilled by the approval certificates across the globe. Safe - Reliable – Certified
04.03.2021  |  2180x  |  Press release  |   | 
PORTALS
Recycling-Portal Schuettgut-Portal BulkSolids-Portal
SIGN UP FOR OUR NEWSLETTER
Newsletter archive
Service and contact
ContactDisclaimerPrivacyAdvertising
FOLLOW US
Linked