(1) construction process
1) process
Equipment foundation acceptance → equipment unpacking inspection → equipment in place → dry pipe installation → branch pipe installation → pipe test pressure flushing → branch pipe and equipment touch
2) construction method
①water pump foundation construction
Sweeping and chiseling the ground or floor of the pump room; according to the project Equipment professional engineers review the pump foundation plan for placement; support templates: pump foundation height is required to be at least 50mm above the floor of the pump room renovated; according to the design of the concrete grade or not less than C20 concrete filling foundation; pump foundation to reach permanent strength, 1:2 cement mortar will be plastered all around the foundation flattening, without pre-buried any buried parts; concrete and plastering should be watered after maintenance; acceptance: After the above steps are done, the civil construction professional quality inspector check after passing, fill in the pump foundation pre-inspection records, hand over to the equipment professional, and respectively by the signatures of the handover party and the receiving party, can also fill in the intermediate acceptance records, the above information equipment professional need to be retained.
② pump and vibration isolation installation
Pump handling: preferably transported together with the box. Pumps on the ground and underground, lifting equipment, lifting equipment handling; pumps in the underground ramp, can be transported down the ramp; pumps in the underground lifting holes, can be sent down the winch.
Pump unpacking inspection: pump unpacking inspection should be checked in accordance with the following items, and make a record of the box number and the number of boxes, as well as packaging; equipment name, model and specifications; equipment without missing parts, damage and appearance of paint, etc., in and out of the mouth of the protection of the pipe and the cover should be intact.
Measuring and placing: measure the vertical and horizontal centerline of the foundation, and set the position of the vibration isolator according to the size of the pump base.
Vibration isolator installation: JSD rubber vibration isolator, do pump vibration isolation element. Its model selection according to the following conditions: pump unit model, specifications, speed; unit base size; pump, motor and base weight, etc.; horizontal pump vibration isolation, vibration isolation and pump foundation is not fixed; vertical pump vibration isolation, vibration isolation and pump foundation fixed.
Steel base installation: pump and vibration isolation between the steel plate (vertical pump) or steel base (horizontal pump), forming a similar concrete vibration damping plate inert block. Steel base above and pump bolted, below and vibration isolator connection, bolts up and down must be padded flat pads and spring shims, after installation, adjust the level of steel base.
Pump installation: pumps should be done before the following review: foundation, steel base plane position and elevation should be in line with the design requirements; equipment should not be missing, damage and corrosion, etc., the pump inlet and outlet protection and cover, such as the loss of the protective effect of the pump should be dismantled to check; the disk should be flexible, no blocking, jamming phenomenon, no abnormal sound.
With the inverted chain will be lifted to the pump steel bracket, the pump base and steel bracket bolts, bolts must be padded under the flat gasket and spring shims. Then determine the level of the pump, put the level on the pump shaft, measure the axial level; or put the level on the base processing surface or the export flange surface, measure the longitudinal and lateral level; or hanging plumb line method, measure the flange of the pump inlet vertical plane and plumb line is parallel to the measurement of the concentricity of the connection between the motor and the pump. After leveling the exit and appearance of effective protection, waiting for piping.
3 piping vibration isolation installation
Piping vibration isolation is installed in the pump inlet and outlet pipe flexible rubber joints, stainless steel hose or pump compensator. Because of stainless steel hose and pump compensator and other metal components have excellent displacement compensation function, lack of lateral and angular displacement function, and thus lack of vibration isolation function. In general, rubber flexure joints are preferred. Only in the case of very high water quality requirements, the choice of stainless steel hose or pump compensator, and need to be designed in detail.
In the water pump intake pipe can be preferred to select the flexible eccentric reducer rubber joints, flexible rubber joints. (In order to choose)
In the water pump water pipe can be preferred to select the flexural concentric reducer rubber joints, flexural rubber joints, flexural rubber elbow. (In order to choose) flexible rubber pipe fittings according to the interface mode distinction between flange connection and threaded connection. According to the structure of the form of distinction between a single sphere, double sphere, multi-ball, curved sphere, and so on.
(2) quality control control measures
①Equipment professional engineers must pay attention to the construction of the pump room, the pump foundation location, elevation review before construction. Mainly check the pool orifice elevation and pump installation and vibration isolation settings are consistent.
②Equipment engineers should make a detailed technical brief to the construction manager.
3 operators need to be in accordance with the delivery of construction, the pump room as a key machine room construction, to prevent blind construction.
④Select qualified manufacturers of JSD rubber vibration isolators and flexural rubber joints.
⑤ Do a good job in protecting the finished products of equipment, pipes and fittings to prevent pollution.)
6 Multi-group pump arrangement, the same type should be lined up together, equally spaced, multi-group pump piping should be horizontal and vertical alignment, to ensure the overall beauty of the machine room.
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