In many applications in the oil and gas trade, the chemical industry, and even the food trade, pumps that work reliably and provide high efficiency are wanted. At the identical time, they will must have convincingly low investment costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and protected mannequin that may handle move rates of up to 300 l/h for many years. For use in purposes with greater circulate charges, the pump professional from Leonberg, Germany, is now increasing its product vary with two new sizes. In pressure gauge ยี่ห้อ tk to the LCA model, the Ecosmart may also be available in the extra highly effective LCC and LCD versions in the future. While the LCC model can meter in excess of 264 gallons per hour, Lewa designed the LCD for a circulate fee of up to 528 gallons per hour. The maximum permissible working pressure for each fashions is 50 bar and 600 kilos respectively. The stringent use of similar elements inside the Ecosmart product household keeps manufacturing prices and due to this fact the final value low. At the identical time, a excessive level of security could be guaranteed by focusing on all important design options such as the stress aid valve or the proven sandwich diaphragm with continuous monitoring. The LCC variant was made out there on the finish of 2021 and the LCD mannequin will be out there by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow series, Lewa has provided the inexpensive Ecosmart pump for a number of years. This is mainly because of the truth that although a reliable pump unit is required in quite a few processes, on the identical time comparatively low discharge pressures within the decrease two-digit range require less complex pump expertise. With the Ecosmart LCA in the single pump version, nonetheless, only a flow rate of beneath 80 gallons per hour was previously potential. In order to have the ability to provide the Ecosmart for purposes with greater move charges, the engineers at Lewa started creating two further, bigger pump variants in 2019. The aim was to scale up the Ecosmart to bigger functions with the confirmed security level and prime quality Lewa parts with out significantly increasing the low investment cost typical for this pump series. This was to be achieved by a consistent modular precept throughout the pump sequence, as properly as a strict give attention to the essential functions and features. The specs additionally demanded the standard Lewa suitability for unrestricted continuous operation over many years. Options for integrating the pumps into automated methods by way of analog control alerts or bus techniques are also a matter after all.
เครื่องมือที่ใช้วัดความดันโลหิต on the check stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the necessities for the conveying capacity had to be applied constructively. Larger plunger diameters have been selected for the smaller LCC variant, so that more than 264 gallons per hour could be conveyed instead of lower than 80 gallons. In the case of the more highly effective LCD version, the engineers also decided to increase the stroke length so that a most move price 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 performance of the pump was the operational reliability typical of Lewa familiar from different pump collection. For this objective, particular person, important options such because the built-in pressure safety valve or the sandwich diaphragm were taken over from the Ecoflow models. The individually adjustable pressure security valve ensures that sudden overpressure within the pump doesn’t damage the diaphragm or pump drive. The diaphragm protection system DPS, whose essential element is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the best place. It can’t be overstretched or broken during start-up. Thus, the pump is protected towards working errors or upset operating conditions. Finally, the standard diaphragm monitoring system checks the condition of the diaphragm and warns plant operators instantly if there’s any injury. This reliably prevents cross-contamination between the pump and the piping system and ensures operational safety at all times, especially in sensitive areas with poisonous fluids. However, diaphragm monitoring isn’t used because Lewa diaphragms of this sequence often obtain service lives of a number of years – even beneath full load and continuous operation.
A key point was to keep manufacturing prices inside a similar vary to the small LCA variant, thereby creating engaging market prices for functions with less demanding necessities and lower operating strain. To do so, the design of the 2 new pump sizes needed to combine components that are as similar or at least related as potential in order to keep away from high manufacturing costs. In this manner, the Lewa engineers had been able to successfully implement the widespread components strategy that had already been practiced many instances.
Pump customers additionally profit from this intelligent modular principle, as many put on components can be used throughout pump varieties. This considerably simplifies the spare parts inventory. At the identical time, the modular precept also allows individual changes to the respective software. For example, stroke frequencies or plunger diameters can be selected individually. The basis for this is the M900 pump head, which is already used within the LCA variant and within the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility additionally presents benefits for plant development: It permits the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to combine the unit into methods with restricted or confined spaces. In addition, the pump head of the new LCC and LCD fashions is aligned at proper angles to the plunger axis, resulting in a particularly compact format. In many pumps, the pump head is on the same axis as the plunger, which regularly leads to bulky pump dimensions. The 90-degree orientation avoids this with the brand new models. This advantage is achieved by the extraordinarily compact and utterly newly developed, cost-effective diaphragm drive.
In order to make sure the lengthy service life typical of Lewa pumps, solely high-quality, robust materials are used within the LCC and LCD variations. Toxic and abrasive substances can stress the pump significantly and so a wide selection of materials can be utilized on the wet finish, which are additionally successfully used in the high-pressure variants of the Ecoflow sequence. Many high-quality parts from the Ecoflow sequence are additionally used for the drive units, using the widespread elements strategy. The result is robustness and durability that’s unusual in this pump class. In addition, all Ecosmart pumps have been designed with a single oil bathtub, which is used for each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra complicated lubrication by way of two separate oil techniques and ends in an easier design, which not only facilitates operation but in addition reduces upkeep work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the united states industry commonplace for metering pumps API 675, making certain nearly limitless usage for quite a few demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents in the chemical business, pumps are wanted that on the one hand meet the very best specification necessities and however are still cost-effective. Here, the Ecosmart pump with its larger efficiency is prepared to meet precisely these requirements, because it has been precisely engineered for applications within the decrease stress vary up to 50 bar (600 pounds). The larger versions of the Ecosmart pump are additionally appropriate for industrial water treatment, corresponding to in seawater desalination or industrial cooling circuits. What counts right here above all is compactness and cost-effective design, which the whole Lewa Ecosmart series fulfills thanks to its revolutionary design precept.
Before the model new pump variants are available to customers, numerous intensive exams shall be carried out. They will ensure that the items also meet the excessive inside firm requirements for reliability and performance in operational follow. They embrace, on the one hand, steady load checks of as a lot as a quantity of tens of thousands of hours and, on the opposite hand, overload checks. In the latter, the pump is run constantly at up to 20 % above maximum stress to further validate its robustness. Special tests are carried out in heated cupboards to proof that the pumps additionally carry out perfectly under excessive ambient conditions. After successful completion of all tests and ultimate adjustments, the Ecosmart version LCC is now in the marketplace, the LCD mannequin will follow in mid-2022.
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