Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a constant-pressure water supply system. The constant-pressure water supply system comprises a water pump, a pressure transmitter, a frequency converter and a PLC; the pressuretransmitter is disposed at an outlet of the water pump and is connected with the PLC; the frequency converter comprises a pre-set communication interface and a PID regulator; the PID regulator is connected with a motor of the water pump and is connected with the PLC through the pre-set communication interface; the pressure transmitter is used for collecting water pressure signals at the outlet ofthe water pump and sending the water pressure signals to the PLC; the PLC is used for sending the water pressure signals to the frequency converter through the pre-set communication interface; and the PID regulator of the frequency converter is used for performing PID operation according to the water pressure signals and controlling the motor of the water pump to run according to an operation result. The frequency converter possesses a PID regulating function, PID operation can be performed according to the water pressure signals which are sent by the PLC through the pre-set communication interface, thus a PID configuration loop of the PLC does not need to be occupied, and the constant pressure response is faster; and meanwhile an input-output module does not need to be added to the PLC,and thus the hardware invested cost is reduced.
本发明公开了一种恒压供水系统，包括水泵、压力变送器、变频器和PLC，压力变送器设置于水泵的出口处，并与PLC连接，变频器包括预设的通讯接口和PID调节器，PID调节器与水泵的电机连接，并通过预设的通讯接口与PLC连接；压力变送器用于采集水泵的出口处的水压信号，并将水压信号发送至PLC；PLC用于通过预设的通讯接口，将水压信号发送至变频器；变频器的PID调节器用于根据水压信号进行PID运算，并根据运算结果控制水泵的电机运行。本发明的变频器自带PID调节功能，可根据PLC通过预设的通讯接口发送的水压信号进行PID运算，如此，无需占用PLC的PID组态回路，使得恒压响应更快；同时，无需对PLC添加输入输出模块，节省了硬件投入成本。
The invention discloses a constant-pressure water supply system. The constant-pressure water supply system comprises a water pump, a pressure transmitter, a frequency converter and a PLC; the pressuretransmitter is disposed at an outlet of the water pump and is connected with the PLC; the frequency converter comprises a pre-set communication interface and a PID regulator; the PID regulator is connected with a motor of the water pump and is connected with the PLC through the pre-set communication interface; the pressure transmitter is used for collecting water pressure signals at the outlet ofthe water pump and sending the water pressure signals to the PLC; the PLC is used for sending the water pressure signals to the frequency converter through the pre-set communication interface; and the PID regulator of the frequency converter is used for performing PID operation according to the water pressure signals and controlling the motor of the water pump to run according to an operation result. The frequency converter possesses a PID regulating function, PID operation can be performed according to the water pressure signals which are sent by the PLC through the pre-set communication interface, thus a PID configuration loop of the PLC does not need to be occupied, and the constant pressure response is faster; and meanwhile an input-output module does not need to be added to the PLC,and thus the hardware invested cost is reduced.
本发明公开了一种恒压供水系统，包括水泵、压力变送器、变频器和PLC，压力变送器设置于水泵的出口处，并与PLC连接，变频器包括预设的通讯接口和PID调节器，PID调节器与水泵的电机连接，并通过预设的通讯接口与PLC连接；压力变送器用于采集水泵的出口处的水压信号，并将水压信号发送至PLC；PLC用于通过预设的通讯接口，将水压信号发送至变频器；变频器的PID调节器用于根据水压信号进行PID运算，并根据运算结果控制水泵的电机运行。本发明的变频器自带PID调节功能，可根据PLC通过预设的通讯接口发送的水压信号进行PID运算，如此，无需占用PLC的PID组态回路，使得恒压响应更快；同时，无需对PLC添加输入输出模块，节省了硬件投入成本。
Constant-pressure water supply system
一种恒压供水系统
HE FENGJIAN (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
F04D
Strömungsarbeitsmaschinen
,
NON-POSITIVE-DISPLACEMENT PUMPS
/
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
,
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
/
G05B
Steuer- oder Regelsysteme allgemein
,
CONTROL OR REGULATING SYSTEMS IN GENERAL
Constant-pressure water supply device and constant-pressure water supply method
| Europäisches Patentamt | 2024