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Hydraulic Variable Clearance Pocket Control System for Efficient Capacity Control

Operated by hydraulic cylinder, this system offers custom clearance pocket sizing for precise capacity control in compressors. The modular design includes power pack assembly, reservoir, valves, and pump for easy installation and remote operation. It ensures high efficiency, accuracy, and visual positioning without negative effects on suction valves. Partner with Thomassen Compression Systems for specialized services on reciprocating and rotating equipment.

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Hydraulic Variable Clearance Pocket Control System for Efficient Capacity Control

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  1. Hydraulically Operated Variable Clearance Pocket

  2. Capacity control • Stepped control • Cylinder unloading • Volumetric control • Stepless control • Speed control (VSDS) • Volumetric control manually operated • Reverse flow control • By-pass control

  3. HOVCP versus other ways of capacity controls

  4. Lower cost compared to • Reverse flow control • Extra flow losses • Higher discharge temperatures • Extra loads on the suction valve plates • Speed control by VSDS • By-pass control

  5. Capacity Control and Clearance Volume

  6. Capacity Control and Clearance Volume

  7. Capacity Control and Clearance Volume

  8. Capacity Control and Clearance Volume

  9. Design description • Hydraulic cylinder and piston • Custom sized clearance pocket

  10. Hydraulic Operated Variable Clearance Pocket

  11. Power pack assembly Hydraulic reservoir Filter Non-return valves Electrical operated valves Pneumatic feed pump Modular design

  12. Advantages • High efficiency & loss-free • Easy and quick installation • Remote controlled • Accurate • Position can be visualised • No electrical cables • No negative effects on suction valves • Easy to disconnect during maintenance • Simple construction

  13. Thomassen Compression Systems bv As a service technology centre TCS service department is your partner for specialist services on your valuable reciprocating- and rotating equipment

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