海底管线泵操作手册

CAUTION
IF PUMP STOPS ABRUPTLY WHEN DRIVER IS SHUT DOWN, INVESTIGATE FOR PUMP BINDING. TAKE NECESSARY REMEDIAL ACTION BEFORE RESUMING OPERATION. 9A. Starting the driver (motor driven). Prepare the driver for start-up in accordance with the manufacturer’s instructions. Start the driver. 9B. Starting the driver (turbine driven). Prepare the turbine for start-up in accordance with the manufacturer’s instructions. start the turbine and bring it up to speed quickly. 10. As soon as pump is up to rated speedis will avoid abrupt changes in velocity and prevent surging in the suction line.
A. if pump is equipped with a mechanical seal, ensure it is properly assembled and tightened (refer to “shaft sealing” section.)
CAUTION
Most cartridge seals are equipped with a spacer between the gland plate and drive collar. this spacer must be removed before starting unit. B. if pump is equipped with a packed box, insure box is properly packed (refer to “shaft sealing” section).
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PUMP INSTRUMENTATION SET POINTS
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The following set points apply to these DAD pumps which use a ball/ball bearing arrangement. Bearing metal temperature Normal 140℉ to 180 ℉. (60℃ to 82℃) Alarm 190℉. (80℃) Shutdown 200℉. (93℃) Bearing housing vibration Normal 0.1 to 0.3 in/sec (2.5 to 7.6 mm/sec) Alarm 0.4 in/sec (10.2 mm/sec) Shutdown 0.5 in/sec (12.7 mm/sec)
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INITIAL START-UP PROCEDURE
1.Close 2/3 range of discharge valve if valve is not already closed. 2.Prepare the driver for start-up in accordance with the manufacture’s instructions. 3.Warm-up pump. Avoid severe thermal shocks to the pump as a result of sudden liquid temperature changes. The pump must be preheated prior to start-up. Unless otherwise specified, the external temperature of the casing must be within 100℉(55.6℃) of the temperature of the liquid to be pumped at time of start-up. Due to the heavy metal sections, the casing will lag the liquid temperature during such changes, and severe temperature stresses and subsequent misalignment of machined fits may result. Preheating is accomplished by circulating a small amount of hot fluid through the casing by utilizing vents, drains or bypass from discharge. Preheat pump slowly at a rate not to exceed 100℉(55.6℃) per hour. 4.Prime pump and ensure pump suction valve is open.
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Warning: observe extreme caution when venting and/or draining hazardous liquids. wear protective clothing in the presence of caustic, corrosive, volatile, flammable, or hot liquids. do not breathe toxic vapors. do not allow sparking, flames, or hot surfaces in vicinity of the equipment.
CAUTION
BEFORE STARTING OR WHILE OPERATING THE PUMP, THE CASING AND SUCTION LINE MUST BE COMPLETELY FILLED WITH THE LIQUID BEING PUMPED. THE ROTATING PARTS DEPEND ON THIS LIQUID FOR LUBRICATION, AND THE PUMP MAY SEIZE IF OPERATED WITHOUT LIQUID. 5.Ensure pump recirculating line (if required) is open and free of obstructions. 6.Check that pump is vented by observing leakage from casing vent and seal piping vent. Close vent when liquid is emitted. 7A. If pump is equipped with a mechanical seal, make sure seal piping is turned on. 7B. If pump is equipping with a packed box, turn on cooling liquid. 8. Check pump rotating by starting unit momentarily. The direction of rotation is shown on “PUMP DATA SHEET”(1-1). Note the pump coasts to a gradual stop.
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Pre-operational Checks
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At initial start-up and after the equipment has been overhauled. Ensure pump and piping are clean. Before putting the pump into operation, it should be thoroughly flushed to remove the rust preventive as well as any foreign matter which may have accumulated during installation. take all possible care not contaminate your system. Clean and flush bearing housings. fill reservoir with oil to the proper level (see “lubrication”)
Pipeline Pump
Operation Manual
Operating precautions
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Warning: do not wipe down in the vicinity of rotating parts. if unusual noise or vibrations occur, secure the pump as soon as possible. Warning: the unit must not be operated unless coupling guard is bolted in place. failure to observe this could result in injury to operating personnel. Warning: when pump is equipped with manifold vent and drain lines, each line must be equipped with an invividual valve to prevent any liquid from a high pressure line flowing into a low pressure line. these valves must be kept in the closed position during pump operation.