Borehole pumps (also known as bore pumps, well pumps or bore water pumps) are a type of submersible pumps that are used to control water and liquid supply in various mining, farming, deep wells, rain water reticulation and petroleum capture applications. Most borehole pumps are designed for borehole and submersible pressure systems, varying with the hole depth and operating flow rate required. Popular multistage bore pumps can be powered by Vasco variable speed drive controllers to sustain their set pressure and operate only when needed, saving energy and extending the life of the pump.
Bore pumps can be mounted horizontally in a shroud and be supported under a pontoon in a dam keeping them free of silt, also in rain water tanks where the pumps are secure and protected from vandals, for example in multiple occupancy buildings. Larger bore pumps are used in major irrigation requirements with large flows. In remote areas where power is not available these can be powered by diesel engine, and smaller bore pumps can be solar powered. The major borehole pump manufacturer is Javelin.
The 4HS Borehole Pump is a range of 4" electric submersible pumps for borehole & submersible pressure system applications.
Three-phase water-filled asynchronous motor with encapsulated resin stator, fully constructed of AISI 304 stainless steel.
Built-in integrated inverter controlled by CM control module.
Multistage pump made of AISI 304 stainless steel. Inverter allows 4HS to change pump speed to maintain set-pressure regardless of water demand. Thus, the pump is operated only when and as needed without wasting energy, and extending pump life. Starts and stops pump gently, thus reducing peak absorption, mechanical stress. Protects pump and drive from overload, surges, under/over - voltage, dry running, and any abnormal conditions.
Pump stages, in AISI 304 stainless steel, are specifically designed to manage high water energy produced by higher pump speeds. The number of stages used is four times less than traditional 50 Hz pumps.
Mono-block single shaft reduces imbalance and, as a consequence, vibration in the pump, to provide silent and smooth operation and extended motor life. Variable speed allows the pump to cover a wide range of hydraulic performance with a single pump.
The encapsulated stator, constructed entirely of AISI 304 stainless steel, is impregnated with a special resin with high thermal conductivity. Due to this design, 4HS submersibles are suitable for use in pumping high-temperature water.
The water-filled rotor maintains the radial alignment of the shaft and sustains the axial thrust via bushings and an up-thrust bearing with pads.
Entirely made of AISI 304 stainless steel, it features an inverter power board immersed in a special resin with high thermal conductivity; this construction extends the life of electronic components & provides greater mechanical resistance to vibration & external pressure. The power plug allows simple and quick cable replacement.
CM control module, mounted above ground, manages the pump operation by changing pump speed to maintain the desired pressure in the system regardless of water demand.
Simply connect the pressure transducer, supplied as standard, & perform a quick set-up of the sensor to configure the pressure range in relation to the system. During operation, the CM control unit continuously monitors the electrical, hydraulic & thermal parameters providing complete protection against under/ over-voltage, overload & dry-running.
|The Waterproof Junction Between The Pump Lead and Drop Cables is Made Using a Provided Kit Consisting of:|
|Polymer sheath containing the cable junctions||Stick for mixing resin-hardener|
|Polyurethane resin||Insulated cable connectors|
|Hardener||Multilingual instruction manual|
The control module receives the pressure signal from the pressure transducers & varies pump speed to maintain a constant set pressure regardless of water demand. In addition to the constant pressure control, CM can also the following control modes:
Variable speed allows 4HS to cover a wide range of water flow and heads with only few models; selecting the proper pump model for an application will help maximise the performance and overall efficiency of the application. Use the diagram below to select the most suitable 4HS pump model for your application.
|Part No.||Model||Description||Length(mm)||Motor Size(kW)||Discharge Size|
|420000||4HS-02.04||4" Variable Speed Borehole Pump||936||2.1||1.1/4" BSP|
|420072||Javelin 4HS pump shroud with a 1.25" discharge to suit 4HS02 & 04|
|420078||Javelin 4HS Pump shroud with a 1.5" discharge to suit 4HS06|