Rebuilding an Ineffective Pump Station, a series:

Article Four, by Douglas Muscott CID, Lad Irrigation Co

Pump station design/build requires a blueprint of what you are trying to accomplish. This segment deals with how we develop our construction plans and our procedures for building a project. Following is a set of CAD drawings that outline our vision for this pump station. Articles two and three were carried out with these plans in hand as they were developed after taking survey shots and logging them and a pre-construction meeting with the builders and the project owners. Following is our vision of this project.

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This page shows the plan view of our vision of what the new pump station will look like. We do our design work on CAD and this allows us to accurately scale the components and make sure our ideas can come true in the real world.

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Page two shows the elevation view of our proposed pump station and allows us to make sure the water will enter and exit the pump structure as we plan. This is very critical and a lot of math is involved in this phase to verify the flow and quantity of water we need for our system.

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Page three shows the pump pad layout for the electrical conduits and other items to be built into the concrete poured pump support structure. All this type of construction must be seen in the mind’s eye of the engineer designing the pump station as remodeling corrections into concrete is time consuming and expensive.

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Page four shows the exact construction of the electrical controls and how they are to be built and wired into the system. This pump station will be fully automated when complete allowing the operator to simply change valves with the pumps automatically adapting to the requirement with a pressure transducer and a VFD.

Rebuilding an ineffective pump station, a series:

Article Three, by Douglas Muscott CID, Lad Irrigation Co

The concrete pumping structure in now poured and the steel fabricated turbine pump structure is installed and we are now ready for pump pad site preparation. Before we can backfill the structure and prepare the pad sub grade we must connect the pipelines that we cannot access once the backfilling and concrete are poured. The electrical controls will be all assembled and pre wired and set into position before the concrete pad is poured and all conduits must be in place.

 

Boom and Weilding Trucks

This view shows our boom truck and welding truck on the jobsite. The three pump chambers are the red primer vertical pipes in front of the concrete box. The black pipe between the two left verticals is the level transducer sensing pipe. In the background the ditch from the water company can be seen and water delivery takes place from the far side of the photo. In the foreground you can see the pressurized pipes that will connect to the discharge manifold.

 

Water Delivery of Pump Box

This view shows the water delivery side of the pump box. The far pipe is the inlet pipe from the supply ditch and is 14” heavy wall steel pipe. If you look closely you can see a knockout for another pipe to supply the box. This will be part of the two way pipeline system and connect to other pipes. The near pipe is 8” heavy wall pipe and it returns water not pumped, to be captured and re-used at another pump site. All our field fabrication is welded with the wire feed welder seen at the far left of the photo.

 

Delivery Side Looking Towards the Pump

This view is from the delivery side of the box looking toward the pump chambers and the incoming power line. The pipelines that will connect to the pressurized clean water manifold can be seen in the mid-background. The black vertical pipe at the far right is an air vent for the return flow pipeline. The electrical controls will be placed at the far right of the photo as the finished pump pad will extend four feet to the right of the concrete water box.

 

 

This project is now ready for backfill on the pump pad side of the structure. We will bring our excavator in with a vibratory hoe-pack and replace the soil removed and trucked out. The finish grade will be established and prepared for the setting of the electrical controls and in-pad electrical conduits. We will then pour and finish the pad with appropriate pour-in plates to support the discharge filters and manifold.

Rebuilding an ineffective pump station, a series:

Article Two, by Douglas Muscott CID, Lad Irrigation Co

Following the decision by the customer to replace the existing pumping plant with a new state of the art installation, we began the site preparation by demolishing the existing installation. We have new construction plans in place and after calling for a power disconnect from the power provider we prepared the site for the first concrete pour, the new concrete pumping structure.

 

Mechanical and Electrical Demolition

With the mechanical and electrical demolition done, we begin to prepare the site with our excavator. Note the old meter pole in the foreground. It is going away as the new electrical service will be underground to the new electric meter. We have the lazerplane all set up as the grades have all been determined by the cad drawings generated from our preconstruction meeting. We are leaving the existing pressure pipelines pending completion of the new pump pad at which time they will be excavated and re-plumbed to the new discharge manifold.

 

Removal of Old Pipe

All pipe previously connected to the old pump station is removed to give us a “clean floor” for the new construction. The right tool for the job, in this case a new excavator with a lot of power makes short work of this part of the site preparation. The existing concrete box shown here is removed as well to make way for the nine foot deep hole that the new concrete waterbox will be built in.

 

Trucking the Spoil from the Excavation

The site has very tight working clearances so we have to truck all the spoil from the excavation away from the site to allow access for the trades following to build the different phases of the project. Here we are loading the truck with dirt removed from our nine foot deep hole and moving it away so it does not impede access to the next phase of construction.

 

 

We are now ready to move to the next step of construction which is the pouring on the monolithic concrete pump structure and the setting of the fabricated steel wet well pump structure. After the concrete is poured, the pipefitters and crane operators will deliver and set the structure and install the inlet and outlet of the pump station.

Rebuilding an ineffective pump station, a series:

Article One, by Douglas Muscott CID, Lad Irrigation Co

This is the first entry in a series showing how Lad Irrigation uses the latest construction methods and technology to modernize an existing orchard pumping plant and bring it up to current user friendly standards.

The task here is to keep all the existing functions of the current installation and add the latest pumping and control technology for ease of automatic operation. This installation carries the challenge of having three distinct functions as well as three two-way pipelines. Being an orchard installation, it provides frost protection, irrigation and cooling for the growers many varieties of fruit trees. Here we are going to show the beginning of the project which we have been studying for about four years to provide the best solution for the grower.

Pump Station

 

To the side you see the view looking at the overall site showing four centrifugal irrigation pumps and the electrical controls which will be updated and changed. The distribution pipelines which have been extensively modified over a period of several decades and will be updated and integrated into a unified system.

 

 

 

Pump Station

To the side you can see an overall view of the pump station. The water is delivered to a concrete box where two lift pumps lift it about six feet and drop it over stainless steel filter screens where the filtered water is made available to the four centrifugal pumps. Management is a huge issue here as the pumps must be operated in conjunction with the orchard blocks being irrigated and valved to the proper pressure. Counting the two lift pumps there are a total of six pumps to manage along with the three two-way pipelines. The completed project will have two pumps utilizing a VFD and level controls to operate the new pump station in full automatic mode.

 

Pump Station

 

To the side is another view of this pump station. Notice the water delivery from the canal and the tow lift pumps lifting it up into the screening box. Then there are the myriad of other pipelines running into and out of the pump plant. We are going to change all of this as future articles and photos will show.

 

 

The finished project will consist of a concrete screening box that is gravity fed and gravity to the return flow. The electrical will be converted from 230 Volt three phase to 460 volt three phase and the overhead electrical service will be converted to underground feed to the new electrical control center. A VFD controlling two short set turbine pumps operating on a pressure transducer and level control transducer will allow complete automatic operation of the system.

Lad Irrigation Announces New Valley Pump Connect

Lad Irrigation is pleased to announce the availability of the Pump Connect from the Valley Water Management Group

by Greg Snook, CID

Not enough wires to control the pumps and equipment that you need to with your pivot panel? Pump Connect gives you the ability to control pumps and other equipment remotely without additional wires.

Valley Pump Connect

Save time and trips to the field by allowing your pivots control your pumps and other equipment. Save power by keeping constant end pressure on your systems regardless of flow rate and topography. Save the cost of trenching, plowing or pulling in additional control wires to an existing installation.

Lad Irrigation has several installations of Pump Connect in the Columbia Basin controlling equipment remotely where control wires were not available or had become damaged and unusable over time. Installation is simple and usually can be done in just a couple hours. Mount the water tight boxes at both ends and install 4 conductor motor lead between the Water Connect and control components.

What do you need to control?

  • Center pivot or Linear can control single pump or multiple pumps
  • Multiple pivots or linears can control same supply pump
  • Fertilizer/Chemical injection equipment
  • Control pump(s) with remote pressure or water level switches
  • Send pressure transducer reading from end tower to VFD
  • Electric valves and gates
  • Other?

Pump Connect

Specifications:

  • 900 mhz, 1 Watt, frequency hopping
  • Modular design allows for component replacement
  • Up to 48 radios per installation
  • Watertight 3R enclosure
  • Threading back plate for easy mounting
  • Diagnostic/service lights available

Is Pump Connect  a product that would fit your operational needs?

Lad Irrigation Announces New Valley VFlex Corner

Lad Irrigation is pleased to announce the availability of the new Valley VFlex Corner.
by Douglas Muscott 

The new Valley VFlex Corner has been in development since 2009 and was extensively tested at the Valley test site and at customer sites during the 2012 and 2013 irrigation seasons. Lad Irrigation has installed two units this spring with remarkable results.

 

The VFlex Corner features an 8000 series 6″ Span, a new and improved track and roller joint, and a completely redesigned steerable drive unit. The same simple and reliable start-stop controls used on the Valley Corner are also included in the new VFlex Corner. However, a number of new features and options are added to allow you to customize the corner to fit the specific needs of your farm and field. These features include:

Track-and-Roller-JointTrack and Roller Joint

  • “T-Bar” style cradle mount for improved corner span stability on rough ground and high winds.
  • Larger, top grease-able guide rollers and larger main rollers with wear plates for improved cradle durability and ease of maintenance.
  • New run-cycle box with ball bearings and a molded plastic cam for improved durability.

Span and Steerable Drive Unit

  • Span-and-Steerable-Drive-UnitCompletely redesigned steerable drive unit for strength and durability –
  • 8-5/8″ heavy-wall base beam
  • X-braced legs
  • Dual tower supports

Three span length choices –

  • 185′ 6″ span, 82′ overhang
  • 205′ 6″ span, 82′ overhang
  • 205′ 6″ span, 100′ overhang*

* Requires electronic sequencing.

Sprinkler sequences are the same as the Precision Corner with two different available

controllers.

  • Mechanical sequencing utilizes a cam box much like the one used on the Valley Mechanical Corner.
  • Electronic sequencing uses the same Area-Based algorithm as the Precision Corner.

TechsThis option has a feature to allow Lad Irrigation or you to easily enter angle or  position** based overrides to customize the sequencing to a grower’s particular field.

** Requires GPS position or guidance.

Additional Options

  • Swiveling outlet minimizes stress on the transfer hose (fixed outlet standard).
  • Single or Dual Steering Gearboxes in either Standard-Duty or Heavy-Duty.
  • Inverted Corner (requires the swiveling outlet and electronic sequencing).

Wire or GPS Guidance.

  • 18.4R26 radial tires for additional flotation. Can be operated as low as 10 psi.

 

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