Pump installation and construction methods
   1. Pump disassembly inspection
   Pumps before installation according to the relevant requirements of disassembly inspection. Pump disassembly inspection according to the structure of the pump itself, to take the correct order of disassembly, the general is to dismantle the pump accessories (such as auxiliary lines, circulating cooling water system, etc.), and then demolished the host part. Disassembly inspection main contents include: Check packing or mechanical seal conditions, such as bushings, glands, the bottom cover, pressure ring, seal ring, mouth ring, baffle, bushing and other sealed gap is required, Belongs to the bearing structure to determine the gap; to determine the pump body parts gap; shaft curvature check, check the pressure gauge, valve, check the lubricating oil pump, oil pump, cooler, filters and pipelines; check the piston rod mechanism .
   2. Pump installation and commissioning
   This process is suitable for installation of centrifugal pumps , steam reciprocating pumps, electric reciprocating pumps, electric piston pumps, screw pumps , gear pumps , metering pumps, etc.
  (1) pump installation. Retest basic size, location, elevation. Mechanical appearance inspection, there should be no missing parts, damage and corrosion. Disassembled pump to find should be based on the processing of the surface, the overall installation should import and export flanges or other horizontal processing plane leveling. Two-axis alignment should be based on the coupling shall prevail, the tape should be connected so that the two axes parallel to the axial position of the two pulleys shall prevail. All the pipes connected to the pump body, the installation of the pipe fittings and the cleaning requirements of the lubricating oil pipe shall comply with the relevant regulations.
(2) pump test run. Check the anchor bolts before the test run tightness, secondary grouting and wiping surface should meet the design strength requirements. Cooling, heat transfer, insulation, cold, flushing, filtration, dehumidification, lubrication, liquid seal system and pipe connections properly without leakage, and rinse clean to maintain smooth. Mechanical seal should be cooled and assembled properly, the shaft end packing appropriate elastic, high temperature and pressure packing decompression, cooling facilities should meet the requirements. Uncouple the coupling and drive the idling test to pass the connection with the auxiliary pump. Add the filter at the pump inlet and its effective area should not be less than 2 times of the inlet cross-section.
   The pump should be started according to the requirements of different pumps, respectively, according to specifications, and under the rated load according to the prescribed time, step operation, the test run in the various requirements (bearings and various moving parts temperature, temperature, pump vibration values ) Should meet the requirements of the corresponding norms, and detailed records. Abnormal found in time.
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