Archive for the ‘Pump Technology’ Category

Predicting Performance Curves of Centrifugal Pumps In the Absence of OEM Data

Wednesday, January 3rd, 2018 von admin

Technical paper by: Jayanthi Vijay Sarathy

M.E, CEng, MIChemE, Chartered Chemical Engineer, IChemE, UK

Chemical and Mechanical Engineers in the oil & gas industry often carry out the task of conducting technical studies to evaluate piping and pipeline systems during events such as pump trips and block valve failures that can lead to

  • pipes cracking at the welded joints,
  • pump impellers rotating in the reverse direction and
  • damaged pipe supports due to excessive vibrations

to name a few. Although much literature is available to mitigate such disturbances, a key set of data to conduct transient studies are pump performance curves. A pump performance curve is a plot between pump head and flow rate. In Greenfield projects, when no pump vendor data is available, a necessity arises to use performance curves to conduct pipeline/piping studies to check for parameters such as design pressure.

(more…)

Heat transfer oil circulation pump acc. to DIN EN 733

Saturday, December 9th, 2017 von admin

Fig.1 The new NKX heat transfer oil circulation pump

The pump manufacturer Dickow has developed a new pump line NKX for circulation of thermal oil. The pump casing is designed for 16 bar and 350 °C. The new pump line extends the application limit of the previous NKLs-type. The new NKX will replace the series NKLs with exactly the same dimensions in future.

The NKX is used as a circulation pump for hot oils in industrial heating plants/units. The performance range covers capacities up to 400 m3/h and differential heads up to 90 m in 50 Hz services; and capacities up to 2,500 US-gpm and differential heads up to 400 ft in 60 Hz services. The dimensions and performance range of these centrifugal pumps are according to DIN EN 733, that means range is subdivided into different pump sizes in order to achieve best efficiency for all service conditions inside the envelope.

(more…)

Monitor your pump online – at any time, at any place

Friday, December 8th, 2017 von admin

Fig. 1

The generation of maintainers who check the condition of pumps on a daily basis by listening and touching the equipment is dying out. Nevertheless, pumps must operate reliably. To solve this problem, BestSens has developed the Bearing Monitoring System, BeMoS for short (Figure 1).

BeMoS monitors roller bearings in machinery and plants from the very first second of operation. What is so special about it is the underlying technology:

(more…)

Pump Engineer – Study Courses 2018 in German and English

Thursday, December 7th, 2017 von admin

Since 2005 the study programme for pump engineers provides specific training and know-how in terms of academic extra occupational, distance-learning study courses. During these 12 years approximately 30 lecturers have trained more than 300 pump experts coming from different branches – be it manufacturers, operators or planners.

According to Prof. Dr.-Ing Helmut Jaberg, who initiated the pump engineer study programme, the reasons for its success are the following: “The high level of appreciation with regard to our training offers can be measured by the fact that companies, whose employees have already graduated from the study courses, are increasingly encouraging their staff to take this training. Thus, the German study course which started in July 2017 reached the record number of 37 participants. We are really glad to see that companies repeatedly send employees to participate in our programme. Obviously the way it is performed – with a certain rigour and yet with a good sense of proportion – is well received by them.”

(more…)

How screw pumps work

Wednesday, December 6th, 2017 von admin

Blackmer is showing in YouTube videos how its S Series

  • twin screw pumps and
  • triple screw pumps

are working. Offered with or without external timing gears and bearings, the S Series pumps are self-priming, double-ended positive displacement pumps.

(more…)

An ‘alignment free’ pump

Wednesday, November 29th, 2017 von admin

It is imperative that pumping systems are designed and operated in a way that reduces the amount of harmful stress placed on components. One area that has been difficult to achieve and maintain is shaft alignment. Failure to properly align a pump’s mating shafts will eventually lead to challenges associated with shaft fatigue and failure, resulting in compromised pumping-system uptime, reliability and safety. This can then result in costly maintenance or even knock the pump out of service and halt production.

Focused on this problem, Blackmer developed GNX Series sliding vane pumps, which are called by the manufacturer “industry’s first alignment-free”. It is a reduced-speed pump for use in both portable and stationary applications.

(more…)

The basis of rotary positive displacement pump technology

Tuesday, November 21st, 2017 von admin

This is a tale of two pump curves in storage and terminal applications: one steadily bending downward from pump shut-off head, the other barely a curve at all. Both curves match two different pump technologies used in the oil & gas industry. Only one of those pump technologies can achieve certain critical objectives for reliably pumping hydrocarbons with highly variable fluid properties and under varying operating conditions.

The nearly vertical “pressure stiff” performance curve of rotary positive displacement (PD) pumps stems from a basic principle: As a volumetric fluid handling technology, rotary PD pumps create flow and are insensitive to system pressure changes. They deliver a nearly constant volume of liquid over a range of discharge pressures. If your flow or pressure demands change frequently, or even occasionally, on any given day, keep this fact in mind when selecting pump technology for hydrocarbons.

(more…)

What will the pump of the future look like?

Wednesday, November 15th, 2017 von admin

Few components in plant and equipment engineering are as steeped in tradition as the pump. But how does this fit in with the age of digitalisation? And is it even possible to design a hydraulic element that is fit for Industry 4.0? KSB has been reconciling these two worlds successfully for some time now.

KSB has always focused primarily on the optimisation of pumps – knowing the exact load profile and tuning the pump to the operating point. This is borne out by the sheer number of different pump casings and materials used and the impeller adjustment options available. However, conditions can change during the life of a pump and it often happens that a pump no longer runs at the optimum operating point. This also applies to newly installed pumps. For years now, KSB experts have therefore been investigating how to optimise pumps more easily without using complex analytics or even having to replace the pump.

(more…)

Packaged Pumping Solutions

Wednesday, November 15th, 2017 von admin

The Packaged Pumping Systems are engineered pump units equipped with simple site connections to meet the needs of demanding flow control applications in variety of industries.  This system is answering to the industry demand for faster, simpler and safer installations.

The Flowrox systems have many integrated control options to meet the various user demands according to specific industry standards.

 

(more…)

Open University Study Programme for Pump Engineers

Wednesday, November 15th, 2017 von admin

Next English programme starts in March 2018

The programme is an academic distance-learning study course with only two classroom courses to be attended (two weeks each). The free time management allows the participants to define their own pace of progress within the programme which corresponds to a time equivalent of approximately 400 hours. The course “Certified Energy Consultants for Pumps and Pump Systems” is integrated into the programme. Advantages:

  • Flexible time-management
  • Practice-oriented training by renowned pump experts
  • Developed by university professors and leading engineers
  • Open to all engineers and professionals working with pumps

(more…)