In many purposes in the oil and gas industry, the chemical industry, or even the meals industry, pumps that work reliably and supply excessive performance are wanted. At the identical time, they must have convincingly low investment prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and safe model that can handle flow rates of up to 300 l/h for a number of years. For use in applications with larger flow rates, the pump skilled from Leonberg, Germany, is now expanding its product range with two new sizes. In addition to the LCA version, the Ecosmart will also be out there in the more highly effective LCC and LCD variations in the future. While the LCC mannequin can meter in excess of 264 gallons per hour, Lewa designed the LCD for a flow rate of as a lot as 528 gallons per hour. The maximum permissible operating stress for both fashions is 50 bar and 600 pounds respectively. The stringent use of similar elements within the Ecosmart product household retains manufacturing prices and subsequently the final worth low. At the identical time, a high level of security could be assured by specializing in all essential design options such because the stress reduction valve or the proven sandwich diaphragm with steady monitoring. The LCC variant was made obtainable at the end of 2021 and the LCD mannequin will be obtainable by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow sequence, Lewa has offered the less expensive Ecosmart pump for several years. This is especially due to the truth that though a reliable pump unit is required in quite a few processes, on the identical time comparatively low discharge pressures within the lower two-digit range require much less complex pump technology. With the Ecosmart LCA in the single pump version, however, only a move price of below 80 gallons per hour was previously possible. In order to have the power to provide the Ecosmart for functions with higher circulate rates, the engineers at Lewa started growing two extra, bigger pump variants in 2019. The aim was to scale up the Ecosmart to larger purposes with the proven security degree and high quality Lewa parts without considerably increasing the low funding price typical for this pump collection. This was to be achieved by a consistent modular principle throughout the pump sequence, as properly as a strict give attention to the essential features and options. The specifications additionally demanded the standard Lewa suitability for unrestricted steady operation over a few years. Options for integrating the pumps into automated systems by way of analog control alerts or bus systems are also a matter after all.
Lewa Ecosmart LCC3 on the take a look at stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the requirements for the conveying capacity needed to be applied constructively. Larger plunger diameters have been chosen for the smaller LCC variant, so that more than 264 gallons per hour could be conveyed as an alternative of lower than 80 gallons. In the case of the extra highly effective LCD model, the engineers also determined to extend the stroke length so that a most flow fee of 528 gallons per hour could be achieved. Both pump varieties can work towards a most operating stress of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as essential as the efficiency of the pump was the operational reliability typical of Lewa acquainted from other pump sequence. For this function, individual, essential features such as the built-in stress security valve or the sandwich diaphragm have been taken over from the Ecoflow models. The individually adjustable stress security valve ensures that sudden overpressure in the pump doesn’t harm the diaphragm or pump drive. The diaphragm safety system DPS, whose important element is a return spring for the diaphragm, additionally ensures that the PTFE sandwich diaphragm all the time works in the best place. It can’t be overstretched or damaged throughout start-up. Thus, the pump is protected in opposition to operating errors or upset operating conditions. Finally, the usual diaphragm monitoring system checks the situation of the diaphragm and warns plant operators instantly if there is any damage. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security at all times, particularly in sensitive areas with poisonous fluids. However, diaphragm monitoring is rarely used as a end result of Lewa diaphragms of this sequence often achieve service lives of a quantity of years – even underneath full load and continuous operation.
A key level was to keep production prices inside an identical vary to the small LCA variant, thereby creating enticing market prices for applications with less demanding necessities and decrease operating strain. To achieve this, the design of the two new pump sizes wanted to integrate elements which would possibly be as identical or at least comparable as attainable so as to keep away from high manufacturing costs. In this fashion, the Lewa engineers were in a place to successfully implement the common parts technique that had already been practiced many instances.
Pump users additionally benefit from this clever modular precept, as many wear elements can be used across pump sorts. This significantly simplifies the spare parts stock. At the identical time, the modular precept also permits particular person changes to the respective utility. For เกจวัดแรงดันน้ำดิจิตอล , stroke frequencies or plunger diameters can be selected individually. The basis for that is the M900 pump head, which is already used within the LCA variant and within the Ecoflow program.
Lewa Ecosmart LCC in heated cupboard.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility additionally presents advantages for plant construction: It permits the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to integrate the unit into techniques with restricted or confined spaces. In addition, the pump head of the model new LCC and LCD models is aligned at proper angles to the plunger axis, leading to a very compact format. In many pumps, the pump head is on the same axis as the plunger, which often leads to cumbersome pump dimensions. The 90-degree orientation avoids this with the model new models. This benefit is achieved by the extremely compact and utterly newly developed, cost-effective diaphragm drive.
In order to make sure the long service life typical of Lewa pumps, only high-quality, sturdy supplies are used within the LCC and LCD versions. Toxic and abrasive substances can stress the pump significantly and so a variety of materials can be utilized on the wet end, which are additionally successfully used within the high-pressure variants of the Ecoflow collection. Many high-quality parts from the Ecoflow series are additionally used for the drive models, employing the widespread elements technique. The result is robustness and durability that is uncommon in this pump class. In addition, all Ecosmart pumps have been designed with a single oil bathtub, which is used for both the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the more complex lubrication through two separate oil techniques and leads to an easier design, which not only facilitates operation but additionally reduces upkeep work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the united states business commonplace for metering pumps API 675, ensuring almost unlimited usage for numerous demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents in the chemical industry, pumps are wanted that on the one hand meet the best specification requirements and then again are nonetheless cost-effective. Here, the Ecosmart pump with its larger performance is ready to meet precisely these necessities, as it has been precisely engineered for functions in the lower strain vary up to 50 bar (600 pounds). The larger versions of the Ecosmart pump are additionally appropriate for industrial water treatment, similar to in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the complete Lewa Ecosmart series fulfills due to its innovative design principle.
Before the new pump variants are available to clients, a variety of in depth checks shall be carried out. They will ensure that the items additionally meet the high inner company requirements for reliability and performance in operational apply. They embrace, on the one hand, steady load exams of up to several tens of thousands of hours and, however, overload checks. In the latter, the pump is run constantly at as much as 20 % above maximum stress to further validate its robustness. Special checks are carried out in heated cupboards to proof that the pumps additionally perform perfectly beneath excessive ambient circumstances. After profitable completion of all exams and final changes, the Ecosmart model LCC is now in the marketplace, the LCD mannequin will comply with in mid-2022.
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