Purification plant air conditioning water system
Purification plant air conditioning water system
Commissioning of air-conditioning water system in purification plant, checking for foreign objects on trays, variable air volume air conditioners, new fan groups and fan coils; closing various valves on the water inlet and return pipes, starting from scratch to check whether the rotation is flexible, check Pump operation and check for correct orientation; start make-up...
Text label: purification plant system, purification plant air conditioning system, air conditioning water system
Purification Plant Air Conditioning Water System
Commissioning of air-conditioning water system in purification plant, checking for foreign objects on trays, variable air volume air conditioners, new fan groups and fan coils; closing various valves on the water inlet and return pipes, starting from scratch to check whether the rotation is flexible, check Operation of the pump and check whether the direction is correct; start the make-up pump or directly use tap water to supply water, usually make up water according to the direction of the water flow, according to the system configuration, first open the system main valve that controls the system in the water distributor, and then open the floor control valve to see the Check whether the valve part from the control valve to the inner coil inlet and return pipe of the machine is leaking; if there is a leak, mark it as soon as possible, then close the valve and drain the water for repair, then try again until the system does not leak; after the system is full of water and there is no leak, you can Check whether the flow and head of the large circulating water pump of the system meet the design requirements. After running for half an hour, open the filter on the main return pipe, and then remove the filter to remove dirt.
Connect the water pump and the main unit, first start the circulating water pump, then turn on the main unit, after reaching the design temperature, open each fan coil unit, and manually unscrew the manual exhaust valve on the fan coil unit to release the accumulated air and clean the fan Dirt on the filter in the inlet pipe of the coil, and observe the cooling effect of the fan coil; after the whole system is running, check the condensate in the fan coil tray to see if the drain pipe is clear, if there is water, check the pipe and readjust the slope . In the construction of HVAC water system, hydraulic imbalance is the most common problem. Due to hydraulic imbalance, the flow distribution of the system is unreasonable. The flow rate in some areas is too large, and the flow rate in some areas is insufficient. The corresponding control valve should be used to adjust the flow rate of the system. distribute. Although some general-purpose valves, such as globe valves, ball valves, etc., have a certain adjustment ability, due to poor adjustment performance and the inability to measure the adjusted flow, the adjustment can only be qualitative rather than precise, and usually will give debugging work and The installation brought major drawbacks, and a large number of hydraulic balance valves have been used to regulate the flow distribution of the system. Hydraulic balancing valves have good fit, usually high-quality hydraulic balancing valves have linear flow characteristics, that is, when the pressure difference between the two valve ends is constant, the flow is linear with the opening; real-time flow testability , Through the special flow measuring instrument, the flow through the hydraulic balance valve can be measured on site. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification workshops and clean workshops.
General equipment inspection of air-conditioning water system of purification plant, check whether the specifications of all fans, pumps and motors are consistent with the design; check whether the anchor bolts are tight, whether the belts or couplings are properly aligned, and whether the brackets and hooks are firm; check Whether there is enough lubricant in the bearing, and whether the type and quantity of the lubricating oil are in accordance with the technical documentation of the equipment; the manual start operation is smooth and flexible, without paper jams or abnormal sounds; the water valve of the pipeline and the regulating valve of the air pipeline should be opened flexibly and positioned reliably ; Check whether the ground connection of the motor is reliable, and the configuration of the electrical protection relay must meet the specifications. The single-unit test run of the water pump. After starting the pump, immediately stop the operation and observe the direction of the motor. If the operation requirements are not met, the phase sequence of the motor must be changed; when restarting the pump, please check the motor, voltage, current, vibration, speed and Noise and other technical parameters, and do not exceed the specification requirements, if there is any abnormal phenomenon, please stop the machine immediately to analyze the cause, check and deal with it; during the operation of the water pump, you must check whether there is noise in the pump shaft, pump and motor bearings to determine whether the bearings are damaged. , the temperature of rolling bearing shall not be higher than 75 ℃, and the temperature of sliding bearing shall not exceed 70 ℃; after the operation of the pump is completed, the valve must be closed, and the power switch must be turned off according to the debugging operation table and filled.
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