CN220651115U

CN220651115U - Water treatment control cabinet with micro-current detection function

Info

Publication number: CN220651115U
Application number: CN202320686002.5U
Authority: CN
Inventors: 王锐; 秦蓁; 王伟
Original assignee: Shanghai Kaiquan Pump Group Co Ltd
Current assignee: Shanghai Kaiquan Pump Group Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2024-03-22
Anticipated expiration: 2033-03-31

Abstract

The utility model relates to a water treatment control cabinet with micro-current detection, which comprises: the intelligent motor protector comprises a touch screen HMI, a PLC memory, an intelligent motor protector, a circuit breaker, a contactor and a communication module; the MRP31.0 novel motor protector is adopted to collect that a small-power motor in water treatment equipment comprises a PAC dosing pump and a PAM dosing pump, rated current of the small-power equipment is usually lower than 0.1A, and the thermal relay is adopted to have poor overload protection effect on the small current and can not intuitively see the running current. The control cabinet can flexibly set the overload current of the dosing pump to carry out corresponding data record in a communication mode of the PLC and the motor protector, so that the safety of dosing equipment is ensured.

Description

Water treatment control cabinet with micro-current detection function

Technical Field

The utility model relates to a water treatment control cabinet, in particular to a water treatment control cabinet with a simple structure and convenient installation and micro-current detection.

Background

Before improvement, the thermal relay is widely used as an overload protection element of electrical equipment, but the protection performance of the thermal relay on small-current equipment is very limited, a metal sheet is easy to produce fatigue effect, scale values are offset, the action is unstable, and the small-current equipment is more difficult to measure accurately through a pointer ammeter. The low-power dosing pump is difficult to set overload current, and potential safety hazards are brought to equipment.

Disclosure of Invention

Aiming at the problems, the main purpose of the utility model is to provide a water treatment control cabinet with micro-current detection, which has simple structure and convenient installation.

The utility model solves the technical problems by the following scheme: a water treatment control cabinet with microcurrent detection, the water treatment control cabinet with microcurrent detection comprising: touch-sensitive screen HMI, PLC memory, intelligent motor protector, circuit breaker, contactor, communication module.

Touch screen HMI: and the PLC memory is communicated with the read current data, displays real-time numerical values and generates a trend graph and a data report.

PLC memory: and the intelligent motor protector is communicated with the intelligent motor protector, the current real-time value is put into the memory, and when the current is larger than the protection value, logic action can be performed to cut off the power supply of the control loop.

An intelligent motor protector: detecting the running current in the primary loop, and protecting the primary loop from overcurrent, open-phase, three-phase imbalance, overvoltage and undervoltage.

A circuit breaker: the circuit breaker is used for short-circuit protection of a primary loop and 380V power supply breaking.

The contactor comprises: for controlling the operation and stop of the dosing pump.

The circuit breaker, contactor and intelligent motor protector are arranged in the primary loop of the dosing pump control circuit.

The communication module on the PLC memory and the serial port on the intelligent motor protector form a communication network, and the touch screen HMI and the network port of the PLC memory form the communication network.

In a specific embodiment of the present utility model, the intelligent motor protector is an MRP31.0 motor protector.

In a specific embodiment of the present utility model, the touch screen HMI is a complex FE6156H touch screen.

In a specific embodiment of the present utility model, the PLC memory is smart200 memory of siemens.

In a specific embodiment of the utility model, the contactor is an AX-09-30-10-80 contactor of ABB.

In an embodiment of the present utility model, the communication module is a SB CM01 communication module of siemens.

The utility model has the positive progress effects that: the utility model provides a water treatment control cabinet with micro-current detection; the operation current of the low-current equipment is accurately calculated, so that the overload protection of the low-current equipment is guaranteed, and the basis is provided for data analysis. Different from the thermal effect of the heat relay current, the intelligent motor protector in the utility model fully utilizes the electromagnetic induction principle through an advanced microcomputer technology, accurately calculates and calculates the small current in the primary loop, records the current curve of the dosing pump in real time through the touch screen HMI, and is convenient for finding out the reasonable current overload current value of the dosing pump. And the obtained overload current value is written into a PLC memory through the HMI and is compared with the running real-time value, if the real-time value is larger than the overload current value, the overload current value can be logically output through the PLC after a certain delay, and the secondary loop power supply of the dosing pump is cut off to protect dosing equipment.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is an electrical schematic of the main circuit of the drug delivery pump of the present utility model.

Fig. 3-1 is a schematic view of the arrangement of the elements inside the cabinet according to the utility model.

Fig. 3-2 is a schematic view of the cabinet face arrangement of the cabinet of the present utility model.

Detailed Description

The following description of the preferred embodiments of the present utility model is given with reference to the accompanying drawings, so as to explain the technical scheme of the present utility model in detail.

Fig. 1 is a schematic diagram of the overall structure of the present utility model, as shown in fig. 1: the utility model provides a water treatment control cabinet with micro-current detection, which comprises: the intelligent motor protector comprises a touch screen HMI, a PLC memory, an intelligent motor protector, a circuit breaker, a contactor and a communication module; the touch screen HMI and the PLC memory are communicated to read current data, display real-time numerical values and generate a trend graph and a data report; the PLC memory is communicated with the intelligent motor protector, the current real-time value is put into the memory, when the current is larger than the protection value, logic action can be made, and the control loop power supply is cut off; the intelligent motor protector detects the running current in the primary loop and protects the primary loop from overcurrent, open-phase, three-phase imbalance, overvoltage and undervoltage.

The breaker is used for short-circuit protection of the primary loop and 380V power breaking, and the contactor is used for controlling the operation and stop of the dosing pump; the circuit breaker, the contactor and the intelligent motor protector are arranged in a primary loop of the dosing pump control circuit, a communication network is formed by a communication module on the PLC memory and a serial port on the intelligent motor protector, and a communication network is formed by a touch screen HMI and a network port of the PLC memory.

In a specific implementation process, the intelligent motor protector in the utility model can be an MRP31.0 motor protector; the touch screen HMI may be selected as a sophisticated FE6156H touch screen. The PLC memory may be selected from smart200 memory of siemens. The contactor may be AX-09-30-10-80 contactor of ABB. The communication module may be an SB CM01 communication module of Siemens.

As shown in fig. 1, by manually checking the cabinet HMI or according to the overload protection current of the set dosing pump, the HMI writes the overload current value into the PLC memory through network port communication, and the PLC bus obtains the running current of each dosing pump and compares the set overload current, and makes corresponding protection action during overload, and records corresponding current change. In a specific implementation process, the motor protector MRP31.0 and the PLC are adopted to form a bus communication network in FIG. 1, the motor protector MRP31.0 can accurately calculate the current of the dosing pump with the power lower than 0.05KW in the primary loop of the motor, the PLC can write a corresponding protection program through communication, the safety of equipment is ensured, the HMI can record data, and a data support basis is provided for analyzing the performance of the equipment.

Fig. 2 is an electrical schematic diagram of a main circuit of the matched dosing pump, a motor protector is connected in series into the main circuit, and the protector measures and calculates a current value in an electromagnetic induction mode.

Unlike traditional thermal relay, the utility model can protect overload current smaller than 0.1A, and the common mode is as follows: the detection element of the thermal relay is a bimetallic strip, which is easy to generate fatigue effect, so that scale values are deviated and the action is unstable. The intelligent motor protector adopts advanced microcomputer technology and high-performance integrated chips, and has the advantages of powerful functions, high test precision, high resolution and reliable protection action. The utility model accurately calculates the running current of the low-current equipment, provides guarantee for overload protection of the low-current equipment and provides basis for data analysis.

Fig. 2 is an electrical schematic diagram of a main circuit of the matched dosing pump, a motor protector is connected in series into the main circuit, and the protector measures and calculates a current value in an electromagnetic induction mode. As shown in fig. 2: fig. 2 is a schematic circuit diagram of the dosing pump, wherein the current reaches the dosing pump through the circuit breaker, the contactor and the intelligent motor protector respectively to enable the dosing pump to operate, the four dosing pumps have a power of 0.04KW, a rated current of about 0.08A and an overload current of about 0.92A.

Fig. 3-1 is a schematic view of the arrangement of elements inside the cabinet of the utility model, and fig. 3-2 is a schematic view of the arrangement of the cabinet face of the cabinet of the utility model. Fig. 3-1 includes main components PLC, intelligent motor protector (UMC), circuit breaker (QF), contactor (KM), etc. The components touch screen HMI, indicator lights and buttons are included in fig. 3-2.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and that various changes and modifications may be effected therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims

1. A water treatment control cabinet with micro-current detection function is characterized in that: the water treatment control cabinet with micro-current detection comprises: the intelligent motor protector comprises a touch screen HMI, a PLC memory, an intelligent motor protector, a circuit breaker, a contactor and a communication module;

touch screen HMI: the method comprises the steps of communicating with a PLC memory to read current data, displaying real-time numerical values and generating a trend graph and a data report;

PLC memory: the intelligent motor protector is communicated with the intelligent motor protector, the current real-time value is put into the memory, when the current is larger than the protection value, logic action can be made, and the control loop power supply is cut off;

an intelligent motor protector: detecting the running current in the primary loop, and protecting the primary loop from overcurrent, open-phase, three-phase imbalance, overvoltage and undervoltage;

a circuit breaker: is used for short-circuit protection of a primary loop and 380V power supply breaking,

the contactor comprises: for controlling the operation and stop of the dosing pump;

the breaker, the contactor and the intelligent motor protector are arranged in a primary loop of the control circuit of the dosing pump,

the communication module on the PLC memory and the serial port on the intelligent motor protector form a communication network, and the touch screen HMI and the network port of the PLC memory form the communication network;

the intelligent motor protector is an MRP31.0 motor protector;

the touch screen HMI is a frequent FE6156H touch screen;

the PLC memory is smart200 memory of Siemens.

2. The water treatment control cabinet with microcurrent detection of claim 1 wherein: the contactor is an AX-09-30-10-80 contactor of ABB.

3. The water treatment control cabinet with microcurrent detection of claim 1 wherein: the communication module is an SB CM01 communication module of Siemens.