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Precise variable-frequency variable-pressure intelligent water supply control method and equipment
The invention discloses a precise variable-frequency variable-pressure intelligent water supply control method, which comprises the following steps of: comparing an actual pressure value of a most disadvantageous point with a theoretical pressure value of the most disadvantageous point, and controlling a frequency converter by a PLC (Programmable Logic Controller) so as to adjust the running state of a centrifugal pump set, specifically, reading the outlet pressure P1 of the pump set, reading the pressure P3 and the flow Q3 of the most disadvantageous point, the actual pressure P2 of the most unfavorable point is calculated according to the on-way loss of the pipeline, the theoretical pressure P4 which the most unfavorable point should meet is calculated, the difference value P0 between the theoretical pressure P4 and the read pressure P3 is calculated, the P0 is compared with the first pump reducing threshold value P-1, the second pump reducing threshold value P-2, the first pump increasing threshold value P + 1 and the second pump increasing threshold value P + 2, and the pump body is adjusted according to the comparison result. The water supply system has the advantages that precise dynamic water supply combining frequency conversion and pump body number increasing and decreasing is achieved, two water pressure changing methods are organically combined, the advantages of the two water pressure changing methods are reserved, and the water supply system is higher in applicability, more intelligent and longer in service life.
本发明公开了一种精准变频变压智能供水控制方法，通过最不利点的实际压力值与最不利点的理论压力值比较，PLC控制器控制变频器从而对离心泵泵组的运行状态进行调整，具体为：读取泵组出口压力P1、读取最不利点压力P3和流量Q3，根据管路沿程损失计算最不利点实际压力P2，计算最不利点应满足的理论压力P4，计算理论压力P4与读取压力P3之间的差值P0，将P0与第一减泵阈值P‑1、第二减泵阈值P‑2、第一增泵阈值P+1、第二增泵阈值P+2进行对比，根据对比结果对泵体进行调整。本发明的优点在于，实现了变频与增减泵体数量结合的精准动态供水，将两种改变水压方法有机结合，并保留了二者各自的优点，使供水系统适用性更强，也更加智能长寿。
Precise variable-frequency variable-pressure intelligent water supply control method and equipment
The invention discloses a precise variable-frequency variable-pressure intelligent water supply control method, which comprises the following steps of: comparing an actual pressure value of a most disadvantageous point with a theoretical pressure value of the most disadvantageous point, and controlling a frequency converter by a PLC (Programmable Logic Controller) so as to adjust the running state of a centrifugal pump set, specifically, reading the outlet pressure P1 of the pump set, reading the pressure P3 and the flow Q3 of the most disadvantageous point, the actual pressure P2 of the most unfavorable point is calculated according to the on-way loss of the pipeline, the theoretical pressure P4 which the most unfavorable point should meet is calculated, the difference value P0 between the theoretical pressure P4 and the read pressure P3 is calculated, the P0 is compared with the first pump reducing threshold value P-1, the second pump reducing threshold value P-2, the first pump increasing threshold value P + 1 and the second pump increasing threshold value P + 2, and the pump body is adjusted according to the comparison result. The water supply system has the advantages that precise dynamic water supply combining frequency conversion and pump body number increasing and decreasing is achieved, two water pressure changing methods are organically combined, the advantages of the two water pressure changing methods are reserved, and the water supply system is higher in applicability, more intelligent and longer in service life.
本发明公开了一种精准变频变压智能供水控制方法，通过最不利点的实际压力值与最不利点的理论压力值比较，PLC控制器控制变频器从而对离心泵泵组的运行状态进行调整，具体为：读取泵组出口压力P1、读取最不利点压力P3和流量Q3，根据管路沿程损失计算最不利点实际压力P2，计算最不利点应满足的理论压力P4，计算理论压力P4与读取压力P3之间的差值P0，将P0与第一减泵阈值P‑1、第二减泵阈值P‑2、第一增泵阈值P+1、第二增泵阈值P+2进行对比，根据对比结果对泵体进行调整。本发明的优点在于，实现了变频与增减泵体数量结合的精准动态供水，将两种改变水压方法有机结合，并保留了二者各自的优点，使供水系统适用性更强，也更加智能长寿。
Precise variable-frequency variable-pressure intelligent water supply control method and equipment
一种精准变频变压智能供水控制方法及设备
SANG HAOHAO (author) / FENG SHANYUN (author) / FENG ZHIHAO (author) / ZHANG WEI (author)
2024-01-23
Patent
Electronic Resource
Chinese
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