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Anonymous Poster

Flow Measurment for 3 M X 4 M Rectangle Pipe

12/06/2006 10:43 PM

Hello sir / madam ,

I am Sandip Bahvsar, assistant manager from Kirloskar Brothers limited. I am working at Surendranagar branch of kbl for world largest pumping scheme basically irrigation project. As a design concern , her some flow measurement is required for concrete volute pump and detail of concrete volute pump is given below:

Concrete volute pump - capacity - 20,000 liter / sec. (20 cumec/ sec)

Discharge pipe size 3 meter x 4 meter

Boundary condition this size ms pipeline is covered with concrete and laying 42 degree from finished ground level and head is 16.3 m for concrete volutre pump

I need some flow measurement method for the same please do need full for the same.

I consider for the same 1. Ultrasonic method

Please give some detail for the same ultrasonic method and if any other method for this flow measurement.

Regards
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cnpower
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Engineering Fields - Control Engineering - New Member China - Member - New Member

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#1

Re: Flow Measurment for 3 M X 4 M Rectangle Pipe

12/09/2006 10:05 AM

could you pleas show us more dtails about your requirement.

I seem not understand your meaning. if you need flux measure, I thnk I cn help you on it. include ut sensor and method.

info@ndt.cn
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Hendrik
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#2

Re: Flow Measurement for 3 M X 4 M Rectangle Pipe

03/20/2007 3:14 AM

As i understand it you are constructing a 3 x 4 m tunnel to convey the pumped water to an irrigation scheme to an outlet 16.3 m up at an angle of 42degrees.

Your expected velocity will be just under 2 m/sec (20/12) At this velocity friction losses will be high but the distance being short might help. would it be possible to increase the size?

It is not clear where the water is discharged into. A stream of 20000l/s arriving at 2m/s is a lot of energy to deal with. what is the proposed size of the stilling basin?

The optimum flow rate/ minimum friction would be obtained with the downhill pipe running almost full.

The figures you are talking about are exceeding my wildest dreams.

a rough estimate suggest 50000 ha. if possible i would like to know.

Source of the water? Proposed irrigation area? crop? irrigation application? system? etc.

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