Dry running vacuum pumps SIHIdry H250


Catalog excerpts

Dry running vacuum pumps SIHIdry H250 - 1

Dry running vacuum pumps SIHIdry H250 GENERAL TECHNICAL DATA CONSTRUCTION The compact system SIHIdry H250 is a dry running, screw-spindle pump. The screw shaped rotors counter rotate without contact. The pump inlet is at the top and the outlet at the bottom. This gives top-down pumping for self-draining. In contrast to conventional machines, both spindles are synchronised electronically and do not need a mechanical gearbox. This innovative drive concept provides the foundation for allowing the basic unit to be transformed into more intelligent versions for integration within any process control system. This intelligent version of the SIHIdry H250 is able to operate system attributes such as reactor pressure; valve functionality, etc. The data can also be stored and downloaded in order to facilitate good manufacturing practice. DESIGN The SIHIdry H250 vacuum system is available with Ex-Protection for the use in both hazardous and non-hazardous areas. The versatility of the modular unit allows it to be adapted to any process. Comprising casing and internal screw cooling in its basic form, the machine provides optimum temperature control in order to guard against condensation, corrosion, polymerisation, solvent ignition, etc. Further temperature control is available with direct gas cooling in order to reduce vapour saturation conditions inside of the pumping chamber. The drive control protects the machine during times of upset process conditions. Damage due to liquid carry-over is avoided by automatic speed regulation. Once the liquid has been pumped away by the machine, it will return to the required speed. PROPERTIES - No oil lubrication or service liquid - Neither gear box nor transmission fluid - No mechanical shaft seals - Rapid dismantling for on-site maintenance - Pressure resistant casing (test 16 bar) - Electronic drive without wearing parts - Process data recording & fault diagnosis - Accurate and stable temperature profile with inner rotor cooling Suction capacity 290 m³/h Final pressure < 0,1 mbar abs Gas outlet temperature 135 °C Power consumption at final pressure 5 kW Purge gas consumption max. 20 Nl/min Cooling Water Tmin + 10°C Cooling Water Tmax + 35°C Sound level < 63 dB(A) Weight ca. 580 kg VACUUM TECHNOLOGY DRY H250 133.76102.55.01 E 04/2008

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Dry running vacuum pumps SIHIdry H250 - 2

Characteristic Every operating point below the given characteristic curve is possible with the drive variant DYNAMIC by the input of the speed set point. 11010010000,010,11101001000suction pressure [mbar]suction capacity [m³/h] Sectional drawing Materials Item Construction part Material 10.10 Casing EN-GJS-400-18-LT (GGG 40.3) 11.30 Inermediate plate EN-GJS-400-18-LT (GGG 40.3) 16.20 Casing cover 1.0553 24.00 Twin screw spindle 1.4122 21.01 Shaft 1.4122 35.00 Bearing cartridge 1.4122 50.00 Shielding gas throttle EN-GJL-250 (GG 25) 2

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Dry running vacuum pumps SIHIdry H250 - 3

3 COOLING MECHANISMS The actual gas temperatures will vary with the specific process and media: 1 2 3 Casing – basic liquid cooling within jacket: Basic heat removal Screws – internal liquid cooling This permits lower temperatures within the vacuum chamber Direct gas cooling (optional) To avoid solids from accumulating within the vacuum pump 1 2 3

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Dry running vacuum pumps SIHIdry H250 - 4

SCOPE OF SUPPLY The basic design of SIHIdry incorporates static FEP O-Ring type casing seals along with the following components: - Drive electronics fitted in the connecting casing - Cooling water circuit for cooling of the pump casing, drive motors, and twin-screws - Suction strainer in order to avoid detrimental particle ingress into the pump. VARIATION IN DRIVE CONTROL BASIC SIHIdryserial InterfaceBASICSIHIdryAC SupplyBASIC2 x Input2 x OutputSIHIdryserial Output Includes: - Fixed speed - Input: start/stop - Input: reset of failure - Output: operation/failure - Serial interface DYNAMIC...

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Dry running vacuum pumps SIHIdry H250 - 5

5 OPTIONAL ACCESSORIES Module purge gas Ex The standard EEx p gas system regulates, controls, and monitors the N2 pressure at the shaft seal. It is completely integrated within the SIHIdry System and permits pump installation within a hazardous area according to the ATEX – directive. Module secondary cooling water circuit Complete with circulating pump, flow indicator, thermostatic control valve, and heat exchanger; this extensive option is fully integrated into the base-plate. It is particularly useful in areas where site cooling water feed and return lines have very low differential...

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Dry running vacuum pumps SIHIdry H250 - 6

6 Module operator indicator panel To monitor and control the vacuum system within a hazardous area. The local 5,25” display provides the operator with a visual indication of all necessary pump parameters. All necessary operating states can be set by a touch panel menu. PARAdry Parameter Modification Module Eliminating the need to employ PLC programmers, the PARAdry software enables the principle process engineer to modify specific pump parameters. Such parameters are at the discretion of the customer and may include max/min temperature boundaries, speed and pressure, settings, warm up...

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Dry running vacuum pumps SIHIdry H250 - 7

7 Dimensions Item DN PN Connection N1 Inlet 50 16 4 x M16 N2 Outlet 80 16 4 x M16 N5 Coolant inlet - - G 3/8“ External screw thread N6 Coolant outlet - - G 3/8“ External screw thread Subject to change without prior notice.

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