On 2018-08-08 14:48:54
How to check variable frequency water supply equipment is normal?
How to check whether the commissioning of variable frequency water supply equipment is normal?
The pressure of municipal pipe network in each city is generally 2 kg, and the water supply height is generally 6 storeys high. If the building is more than six stories high, the water pressure of the municipal pipe network cannot be met. As a result, buildings larger than six storeys must be equipped with water supplies to pressurize the municipal network. So frequency conversion water supply equipment field also arises at the historic moment. When the frequency conversion water supply equipment runs normally, gradually turn off the water inlet valve. When the water supply of the simulated water supply network is less than the water consumption, observe the pressure indication of the pressure gauge at the equipment inlet. The pressure value should always be above the set minimum working pressure, and the results should meet the specified requirements.
Of course, there are many judgment methods, water treatment manufacturers xiaobian and we have a good chat. For example, in the operating state of the equipment, check the sealing and connection of all parts of the equipment with naked eyes, hand test and other methods to ensure that the equipment is completely sealed. And calculate after the adjustment tank water, gradually closed equipment inlet valve and adjust equipment import and export flow, adjust the equipment import and export volume is less than the export volume to maintain a certain difference, the adjusted water stored divided by the number of equipment import and export volume difference computing compensation time, observe and record at the same time, the value of import and export flow meter.
During the compensation time, the inlet and outlet water volume of the equipment is always different, the compensation time is calculated, and then the value of the inlet and outlet flowmeter is observed and recorded, as well as the value during the compensation time. If the difference in water volume is maintained throughout, the result is qualified if the specified requirements are met.
Or in the normal operation of the equipment, the power is suddenly cut off, observe whether the water hammer eliminator starts in time, record the measured pressure of the pressure sensor at the inlet and outlet of the equipment, and the results shall meet the requirements.
When the equipment stops running, observe the pressure indicator of the pressure gauge at the inlet and outlet of the equipment. When the pressure value rises, observe whether the static pressure transfer elimination device starts in time, and record the measured pressure of the pressure gauge at the inlet and outlet of the equipment.
When the equipment runs automatically, manually adjust the outlet pressure of the equipment to exceed 1.2 times of the set pressure, observe the operation condition of the equipment, stop the machine and give protection alarm. The results shall meet the prescribed requirements.
Under the normal operation of the equipment, check the man-machine dialogue interface, diagram and operation, and the results shall meet the specified requirements.
According to the relevant provisions of GB/T17626.7, when the inverter is put into operation, the harmonic measurement of the experimental equipment shall be carried out, and the measurement results shall meet the specified requirements.
At the same time, the pressure of the simulated water supply network can be adjusted to the user-set pressure and lowered to the wake-up value. Check the "sleep" and "wake" state of the pump, should meet the requirements of the provisions.
The above simple introduction about how to judge qualified frequency conversion water supply equipment, water treatment manufacturers small make up next will give you more relevant practical knowledge, please look forward to.