Ge Isovolt Titan E Brochure GEIT 30066GB_pump_olk50
Ge-Isovolt-Titan-E-Brochure-648870 ge-isovolt-titan-e-brochure-648870
2015-03-09
: Ge Ge-Isovolt-Titan-E-Brochure-648870 ge-isovolt-titan-e-brochure-648870 ge pdf
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Xray GE Inspection Technologies SEIFERT OLK 50 Technical Data Dimensions and weight height width length weight capacity 925 mm / 36.4” 612 mm / 24.1” 590 mm / 23.2” approx. 180 kg / 396 lbs without oil 25 liters Characteristics cooling power oil flow rate power connection max. mains current noise level 5000 W at 32°C ambient temperature > 22 l/min at 4.0 bar 3N PE 400/230 V, 50 Hz 8.2 A < 70 dB(A) (in a distance of 1 m (3.2 ft)) Environmental conditions operating temperature storage temperature humidity + 5° C ... + 40° C - 25° C ... + 70° C (with antifreeze filling) 20 % ... 80 % Coolant circuit cooling agent R 22 (CFC-free) Settings pressure flow rate monitor OFF oil forward line (T1) temperature (T2) max. 9.25 bar 17 l/min 20° C 40° C Compressor type motor rated speed TAH 4518 A 0.55 kW 2900 min-1 Connecting cable Xray GE Inspection Technologies 5 x 1.5 mm2 5 x 1.5 mm2 Application Grounding plug, length 10 m (32 ft) CECON plug, length 10 m (32 ft) GEInspectionTechnologies.com We reserve the right to technical modifications without prior notice. Oil Cooling Aggregate ©2004 General Electric Company. All rights reserved. GEIT-30066GB (5/04) The OLK 50 is an air-cooled refrigeration aggregate designed to facilitate anode heat dissipation of the X-ray tube when operating at high ambient temperatures (up to 40° C) and can also be used when, for economical reasons a re-cooling of the tube-cooling oil from the water supply is not feasible. The design allows the cooling aggregate to transfer the heat from the X-ray tubes to the ambient air. Therefore, sufficient fresh air supply must be guaranteed. For operation at up to approximately 20°C we recommend the oil cooling pump OL 4503. If re-cooling from the water supply is available, the oil cooling pump OW 4002 is recommended. The aggregate is mounted in a square tube frame and is mobile on 4 castors. Equipped with CFC-free coolant. Xray GE Inspection Technologies Description The cooling aggregate is designed for recooling of tube-cooling oil for bipolar X-ray tubes. The air-cooled aggregate is suitable for tropical climate and can be operated at an ambient temperature of up to 40° C. A circulation pump for the cooling oil, a reservoir (approximately 25 l) and safety devices for maximum oil temperature (55° C) and minimum circulation flow rate (17l/min) are completely wired, installed in the aggregate and connected. The aggregate is mounted in a square tube frame and is mobile on 4 castors. The hot tube cooling oil returns via the oil flow switch and through the heat exchanger and, after cooling down, into the oil reservoir. The oil reservoir is vented to the atmospheric pressure. The circulation pump drains the oil from the reservoir and feeds it to the oil outlet quick-lock connector, via the thermometer probe. Cooling circuit The cooling circuit consists of • full-hermetic compressor • air cooled condenser • cooling agent dryer • cooling agent viewing glass with hygroscope • expansion valve • evaporator/heat exchanger • high and low pressure regulator • corresponding quick-lock connectors All mobile components of the compressor, including the drive motor, are hermetically sealed in a housing. The surface of the air-cooled condenser has generous dimensions to ensure reliable operation even at high evaporation and ambient temperatures. The ambient air is taken in through the condenser by means of the ventilator and is expelled via the compressor through the protective grill. Inverse rotation of the ventilator would reduce the air flow rate drastically, thus reducing the cooling capacity of the aggregate. The cooling agent liquefied in the condenser gets to the expansion valve after passing through the oil reservoir, the dryer and the viewing glass. Here the pressure is released from the condenser to the evaporator pressure. In the heat exchanger the heat required for this expansion is taken from the hot cooling oil. The expansion valve controls the flow of cooling agent required to cool to a certain temperature sensed at the heat exchanger’s output side. Electrical control The standard version of the cooling aggregate is sized for connection to a 400 V 50 Hz / 440 V 60 Hz three-phase power supply and is connected to the power via a 5-wire power cable. The live leads are labeled R/S/T to be connected to the phases, the blue conductor to the neutral (Mp) and the green/yellow to ground. A second 5-wire connecting cable supplies the circulation pump from the X-ray control unit and connects the safety circuits to the control to ensure safe operation of the X-ray tube. Cooling oil temperature °C Function 40 switches reconnect automatically after safe cooling is ensured. Air supply The heat absorbed by the heat exchanger and also the dissipation heat from the drive of the compressor has to be discharged by the air cooled condenser. If the unit is operated in a small, self-contained room the room temperature will built up rapidly. As shown in the overleaf diagram the cooling capacity decreases with increasing ambient temperature. It C ure ° perat tem bient 32 40 25 30 25 20 Am 24 16 8 0 0 Fig. 1 1 2 3 Cooling output power [kW] Output diagram is therefore important that sufficient air circulation is provided for the OLK 50. 4 Expansion valve Evaporator Solenoid valve Maintenance Viewing glass All components of the cooling aggregate are selected to be maintenance-free. However, it is crucial that the condenser be kept clean. Dryer Kompressor Also, the cooling oil level in the oil reservoir should be observed and topped up if required. Condenser Air flow P2 pressostat Flow rate monitor Throttle valve Safety circuit The safety circuit monitors the cooling oil supply to the X-ray tube. The circuit includes an oil flow switch, which opens the circuit in case a minimum flow rate of the cooling oil (17 l/min) is not ensured. A thermostat switch opens the circuit in case the cooling water temperature exceeds the set temperature (55°C). Both 5 Bypass valve Fig. 2 Flow diagram Cooling oil reservoir Pump Thermostat T1 , T2
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