Intermediate frequency smelting pot recirculated cooling water monitored control system of remote wireless transmission data
Technical Field
The utility model relates to an automatic control and communication technology field specifically are a remote wireless transmission data's intermediate frequency smelting pot recirculated cooling water monitored control system.
Background
The medium-frequency smelting electric furnace converts three-phase power-frequency alternating current into direct current after rectification, then converts the direct current into adjustable medium-frequency current, supplies the adjustable medium-frequency current to the induction coil and the compensating capacitor to work, and medium-frequency alternating current generates high-density magnetic lines of force in the induction coil, cuts metal materials placed in the induction coil and generates large eddy current in the metal materials, thereby achieving the purpose of heating and melting the metal materials. The heating device of the intermediate frequency smelting electric furnace has the advantages of small volume, light weight, high efficiency, excellent hot processing quality, environment friendliness and the like, and the working stability and reliability of the heating device can quickly become main equipment of a casting, forging and heat treatment workshop. However, in actual production, the intermediate frequency furnace using enterprises are often concerned about the conditions of intermediate frequency furnace thyristors, reactors, capacitors, busbars and intermediate frequency furnace coils and neglect another important working medium, namely cooling water of the intermediate frequency furnace. The intermediate frequency power supply and the intermediate frequency furnace coil can generate a large amount of heat in use, the heat can not be taken away in time to damage components and furnace body equipment of the intermediate frequency power supply, meanwhile, certain potential safety hazards are brought to production operation, and therefore a cooling water system of the intermediate frequency furnace is particularly important in use of the intermediate frequency furnace.
At present, most of intermediate frequency furnaces using enterprises, particularly small enterprises, still stay in a backward monitoring mode of eye-touch for monitoring the cooling water system of the intermediate frequency furnaces, and a complete, accurate and real-time automatic monitoring and remote early warning system does not exist. In order to solve the problem, the invention of the Chinese patent CN201811116851.7 'circulating water monitoring system and method for intermediate frequency furnace' provides a circulating water monitoring system and method for intermediate frequency furnace, the system collects the temperature, flow and liquid level parameters of the circulating water for judgment, and when the circulating water parameters are abnormal, the system controls an alarm module to give an alarm. The circulating water temperature, the flow and the liquid level parameters can be monitored in real time, an alarm is given when the circulating water temperature, the flow and the liquid level parameters are abnormal, an operator is reminded to check and process in time, the situation is prevented from being further expanded, and the system safety is improved. However, the system has single acquired data and lacks functions of wireless parameter remote transmission, historical data query, cooling water electrolyte change trend, parameter change trend tracking and the like, so that the system has single function and is slightly deficient. To satisfy "safe first, pre-guard first! The safe production concept of the method urgently needs to develop a complete, systematic and advanced intermediate frequency furnace cooling water monitoring system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intermediate frequency smelting pot recirculated cooling water monitored control system of complete, systematic, advanced remote wireless transmission data to the function singleness, application scope that solve prior art existence are little, and data information is not enough concentrated, can not the teletransmission, can not wholly master the trend scheduling problem of cooling water parameter.
In order to achieve the above object, the utility model provides a following technical scheme: a circulating cooling water monitoring system of an intermediate frequency melting furnace for remotely and wirelessly transmitting data comprises a field data acquisition layer, a logic operation and HMI (human machine interface) man-machine interface layer, a data transmission layer and a user terminal, wherein the field data acquisition layer consists of field equipment, a field sensor, a field instrument and a data acquisition module; the signal output ends of the field device, the field sensor and the field instrument are respectively connected with the data input end of the data acquisition module; the logic operation and HMI human-machine interface layer consists of a PLC controller and an HMI human-machine interface; the input end of the PLC is connected with the data output end of the data acquisition module, and the output end of the PLC is connected with the human-computer interface of the HMI; the data transmission layer consists of a wireless network transmission module and a cloud platform; the output end of the PLC is connected with a wireless network transmission module, and the wireless network transmission module is connected with the cloud platform; the user terminal is composed of an office network terminal and a mobile terminal, and the office network terminal and the mobile terminal are respectively in data connection with the cloud platform.
Preferably, the communication mode between the data acquisition module and the field device, the field sensor and the field instrument is one of an MODBUS communication protocol, an RS and an HART.
Preferably, the data collected by the data collection module includes cooling water temperature, flow, pressure, conductivity, water pump operating current and water pump operating state information data.
Preferably, the PLC is a programmable logic controller, and the type selection is carried out according to the system scale.
Preferably, the HMI human-machine interface is a desktop computer.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses can realize the centralized processing demonstration to cooling water system each item parameter, send alarm information in time when the real-time parameter reaches the alarm threshold value to the producer takes measures in time to avoid the emergence of accident, and whole system has functions such as historical data inquiry, cooling water electrolyte variation trend tracking, each item parameter variation trend tracking; an enterprise production manager can master dynamic, accurate and real-time equipment information anytime and anywhere through an advanced cloud platform technology; in addition, the field equipment, the field sensor and the field instrument for acquiring field data have more flexibility in configuration, and different hardware configuration combinations can be adopted according to the actual monitoring point position on the field so as to meet the requirements of users and realize the coexistence of functions and cost benefits.
Drawings
Fig. 1 is a connection diagram of system modules according to the present invention;
fig. 2 is a system level architecture diagram of the present invention.
In the figure: 1. a field data acquisition layer; 101. a field device; 102. an on-site sensor; 103. a field instrument; 104. a data acquisition module; 2. a logic operation and HMI human-machine interface layer; 201. a PLC controller; 202. HMI human-machine interface; 3. a data transport layer; 301. a wireless network transmission module; 302. a cloud platform; 4. a user terminal; 401. an office network terminal; 402. a mobile terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, a system for monitoring circulating cooling water of an intermediate frequency furnace for remotely and wirelessly transmitting data comprises a field data acquisition layer 1, a logical operation and HMI human-machine interface layer 2, a data transmission layer 3 and a user terminal 4, wherein the field data acquisition layer 1 consists of a field device 101, a field sensor 102, a field instrument 103 and a data acquisition module 104; the signal output ends of the field device 101, the field sensor 102 and the field instrument 103 are respectively connected with the data input end of the data acquisition module 104; the logic operation and HMI human-machine interface layer 2 consists of a PLC controller 201 and an HMI human-machine interface 202; the input end of the PLC 201 is connected with the data output end of the data acquisition module 104, and the output end of the PLC 201 is connected with the HMI human-machine interface 202; the data transmission layer 3 consists of a wireless network transmission module 301 and a cloud platform 302; the output end of the PLC 201 is connected with a wireless network transmission module 301, and the wireless network transmission module 301 is connected with a cloud platform 302; the user terminal 4 is composed of an office network terminal 401 and a mobile terminal 402, and the office network terminal 401 and the mobile terminal 402 establish data connection with the cloud platform 302 respectively.
In the above embodiment, the data acquired by the data acquisition module 104 includes the cooling water temperature, the flow rate, the pressure, the conductivity, the water pump operating current, the water pump operating state and other information, the sensor type and the installation mode are selected in a targeted manner according to the actual working conditions of the production site, the lower-layer communication technologies such as analog quantity, digital quantity information acquisition module, RS485, RS232 and HART with MODBUS protocol communication are used to acquire more accurate real-time data, the operating state information of the water pump is acquired by monitoring the electric control system of the water pump, and the lower-layer communication technology of the MODBUS protocol is used to make the field wiring of the system simpler and reduce the system cost.
In the above embodiment, the PLC controller 201 is a programmable logic controller, and the collected parameters are subjected to engineering quantity processing and logic operation by the PLC controller 201 according to the system scale model selection; the HMI 202 is a desktop computer and is used for checking the real-time variation trend of parameters, mastering the stable condition of each water system parameter, storing and checking historical alarm records, outputting the real-time running condition of cooling water, and sending an alarm to remind field personnel to process faults in time when the parameters exceed the alarm threshold.
In the above embodiment, the data transmission layer 3 realizes system data sharing through the data wireless network transmission module 301 and the cloud platform 302 technology.
In the above embodiment, the user terminal 4 can know the operation status of the cooling water system in the production site at any time and any place by using the office network terminal 401 and the mobile terminal 402 of the user.
The working principle is as follows: at present, many intermediate frequency smelting furnace enterprises do not have monitoring and early warning systems for the running state and various parameters of a cooling water system of an intermediate frequency smelting furnace or only have simple in-situ detection indicating instruments arranged on a field pipeline, so that the running state of the cooling water system cannot be timely and accurately mastered, once the cooling system has a problem, the cooling system cannot be timely found, and thus production accidents or safety accidents can be possibly caused; the utility model discloses can realize the centralized processing demonstration to cooling water system each item parameter, send alarm information in time when the real-time parameter reaches the alarm threshold value to the producer takes measures in time to avoid the emergence of accident, and whole system has functions such as historical data inquiry, cooling water electrolyte variation trend tracking, each item parameter variation trend tracking; an enterprise production manager can master dynamic, accurate and real-time equipment information anytime and anywhere through an advanced cloud platform 302 technology; in addition, the field device 101, the field sensor 102 and the field instrument 103 for acquiring field data have more flexibility in configuration, and different hardware configuration combinations can be adopted according to the actual monitoring point position on the field so as to meet the user requirements and realize the coexistence of functions and cost benefits.
In summary, the following steps: the utility model discloses remote wireless transmission data's intermediate frequency smelting pot recirculated cooling water monitored control system, PLC controller 201 able to programme has been adopted, HMI human-machine interface 202, wireless network transmission module 301, cloud platform 302 correlation technique, utilize the various sensors of installing in intermediate frequency furnace cooling water return circuit to obtain the parameter, the parameter is passed to PLC and is carried out logic processing, through HMI human-machine interface 202 and audible-visual alarm device output processing result, can further pass through cloud platform 302's mode, to system real-time parameter, early warning state sends enterprise relevant managers, let enterprise managers can know production system developments in real time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.