Drive Equipment

LRP - Linear Rod Pump

Direct Drive

The LRP® system takes advantage of the motor reversing and servo positioning capabilities of a flux vector variable-speed drive to directly control the sucker rod using a simple rack-and-pinion mechanism. Direct control provides numerous benefits by eliminating the cumbersome, high-inertia mechanics of other systems. Compared to hydraulic reversing systems, the LRP® solution is much more elegant and capable, thanks to electronic control.

Simple Design

The LRP® pumping unit mounts directly to the wellhead. The polished rod runs through a channel inside the rack and is suspended from the top by a conventional rod clamp. The rod is allowed to float inside the rack should the pump or rod stick. An induction motor, coupled to the rack-and-pinion mechanism through a gear box, cycles the rack up and down to reciprocate the rod. The rack is lubricated each stroke by submersion into a fully contained oil bath. A pneumatic counterbalance on airbalanced units replaces the massive counterweight of conventional systems and provides greater lifting force by storing energy during a portion of each downstroke and releasing it during the subsequent upstroke.

KSBS Driving Head

KSBS drive heads are approved in compliance with directive 94/9/EC for use in zone 1. The drive head is designed for commercial plant and conforms to the following regulations and norms:

• Machine Directive 2006/42/EC
• ATEX Directive 94/9/EU
• EU Directive 93/68/EEC
• DIN EN 13463-1, 5, 8
• ISO 15136-2:2006
• DIN ISO 12100–1+2
• DIN EN 1127–1

The drive head is equippped with the the anti-friction bearings of the motors in standard design and filled with anti-friction bearing grease in the factory (or with sealed bearings by the bearing manufacturer).

Main Characteristics:

• Explosion-proof motors according to european standard CENELEC EN 50 014, EN 50 018 and EN 50 019 (for terminal box EEx-de).
• European standards are acknowledged and adopted by the member countries of CENELEC (european committee for electrotechnical standardization) and accepted by almost all countries worldwide.
• The motors dimensions comply with IEC 60072 standard
• noise level within 80 dB (A)
• high protection against corrosion

Three Phase Motor

Efficiency and Reliability

The motors offered in this catalogue comply with standards concerning equipment and protective systems intended for use in potentially explosive atmospheres, in compliance with european directive 94/9/EC dated 23/3/94, otherwise known as the ATEX directive.

Protection Standard of the Motors: IP 55

The anti-friction bearings of the motors in standard design are lled with anti- friction bearing grease in the factory (or with sealed bearings by the bearing manufacturer).

Main Characteristics:

• explosion-proof motors according to european standard CENELEC EN 50 014, EN 50 018 and EN 50 019 (for terminal box EEx-de)
• european standards are acknowledged and adopted by the member countries of CENELEC (european committee for electrotechnical standardization) and accepted by almost all countries worldwide.
• The motors dimensions comply with IEC 60072 standard.
• noise level within 80 dB (A)
• high protection against corrosion

Control Panel

Control panels are equipped with inverter (frequency convertor) and with heater and fan or air conditioner. Standard ambient temperature range is -40°C (-40°F) to 55°C (131°F).

Alternative control panel designs are possible and have to be requested separately.
All control panels could be installed inside container.