In many applications within the oil and gas industry, the chemical industry, and even the meals business, pumps that work reliably and supply high performance are needed. At the same time, they should have convincingly low funding costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has offered a cost-attractive and safe model that can handle circulate charges of up to 300 l/h for a few years. For use in applications with greater flow charges, the pump expert from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA version, the Ecosmart will also be obtainable in the more powerful LCC and LCD variations sooner or later. While the LCC model can meter in excess of 264 gallons per hour, Lewa designed the LCD for a flow fee of up to 528 gallons per hour. The most permissible operating stress for both models is 50 bar and 600 pounds respectively. The stringent use of similar elements throughout the Ecosmart product family keeps production prices and therefore the final worth low. At the same time, a high stage of safety can be assured by focusing on all important design options such as the stress reduction valve or the proven sandwich diaphragm with steady monitoring. ไดอะแฟรม ซีล was made obtainable on the finish of 2021 and the LCD mannequin will be out there by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow sequence, Lewa has provided the cheaper Ecosmart pump for a number of years. This is principally because of the truth that though a dependable 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 complicated pump expertise. With the Ecosmart LCA within the single pump model, nonetheless, solely a move fee of below 80 gallons per hour was beforehand attainable. In order to find a way to offer the Ecosmart for purposes with higher flow charges, the engineers at Lewa began growing two further, larger pump variants in 2019. The aim was to scale up the Ecosmart to larger purposes with the proven security stage and top quality Lewa elements with out significantly increasing the low investment cost typical for this pump collection. This was to be achieved by a consistent modular principle throughout the pump series, in addition to a strict give attention to the important features and options. เพรสเชอร์เกจ demanded the usual Lewa suitability for unrestricted steady operation over a few years. Options for integrating the pumps into automated techniques by way of analog management indicators or bus techniques are also a matter of course.
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 capability needed to be implemented constructively. Larger plunger diameters have been chosen for the smaller LCC variant, so that more than 264 gallons per hour can be conveyed instead of lower than eighty gallons. In pressure gauge of the more powerful LCD version, the engineers also decided to increase the stroke size so that a most circulate fee of 528 gallons per hour could be achieved. Both pump varieties can work in opposition to a maximum working strain of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as essential because the efficiency of the pump was the operational reliability typical of Lewa acquainted from other pump sequence. For this purpose, particular person, important options such as the integrated pressure safety valve or the sandwich diaphragm were taken over from the Ecoflow fashions. The individually adjustable stress safety valve ensures that sudden overpressure in the pump doesn’t harm the diaphragm or pump drive. The diaphragm safety system DPS, whose essential component 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 damaged during start-up. Thus, the pump is protected against operating errors or upset operating circumstances. Finally, the standard diaphragm monitoring system checks the condition of the diaphragm and warns plant operators immediately if there’s any harm. This reliably prevents cross-contamination between the pump and the piping system and ensures operational safety at all times, particularly in delicate areas with toxic fluids. However, diaphragm monitoring isn’t used because Lewa diaphragms of this collection often obtain service lives of several years – even under full load and continuous operation.
A key level was to keep manufacturing prices inside an analogous vary to the small LCA variant, thereby creating attractive market costs for applications with much less demanding necessities and lower operating stress. To achieve this, the design of the two new pump sizes wanted to combine components which are as equivalent or at least similar as attainable to have the ability to avoid high manufacturing costs. In this fashion, the Lewa engineers had been capable of efficiently implement the frequent elements technique that had already been practiced many occasions.
Pump users also benefit from this intelligent modular precept, as many put on components can be used throughout pump varieties. This considerably simplifies the spare elements stock. At the identical time, the modular precept additionally allows particular person adjustments to the respective application. For example, stroke frequencies or plunger diameters may be selected individually. The basis for this is the M900 pump head, which is already used within the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility additionally provides benefits for plant building: It allows the Ecosmart pump to be oriented either vertically or horizontally, making it easier to combine the unit into techniques with limited or confined spaces. In addition, the pump head of the model 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 because the plunger, which frequently ends in cumbersome pump dimensions. The 90-degree orientation avoids this with the new fashions. 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, only high-quality, strong supplies are used in the LCC and LCD variations. Toxic and abrasive substances can stress the pump significantly and so quite so much of materials can be utilized on the wet finish, that are additionally successfully used within the high-pressure variants of the Ecoflow collection. Many high-quality components from the Ecoflow sequence are additionally used for the drive units, using the widespread elements strategy. The result’s robustness and sturdiness that is unusual on this pump class. In addition, all Ecosmart pumps have been designed with a single oil bath, which is used for each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra advanced lubrication via two separate oil methods and results in a much less complicated design, which not solely facilitates operation but also reduces maintenance work.
Last however not least, the brand new LCC and LCD versions—like the LCA—comply with the us industry commonplace for metering pumps API 675, ensuring practically unlimited 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 industry, pumps are needed that on the one hand meet the very best specification requirements and on the other hand are still cost-effective. Here, the Ecosmart pump with its higher performance is able to meet precisely these requirements, as it has been exactly engineered for applications within the decrease pressure range as a lot as 50 bar (600 pounds). The bigger variations of the Ecosmart pump are additionally suitable for industrial water remedy, corresponding 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 thanks to its progressive design principle.
Before the model new pump variants can be found to customers, numerous extensive exams will be carried out. They will make certain that the units additionally meet the excessive inside firm requirements for reliability and efficiency in operational practice. They embody, on the one hand, steady load tests of up to several tens of thousands of hours and, then again, overload exams. In the latter, the pump is run repeatedly at up to 20 % above maximum pressure to further validate its robustness. Special tests are carried out in heated cupboards to proof that the pumps also carry out perfectly underneath excessive ambient circumstances. After profitable completion of all checks and last adjustments, the Ecosmart version LCC is now on the market, the LCD mannequin will comply with in mid-2022.
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