CN202189268U - High-performance hydraulic station automatic control system - Google Patents

Abstract

The utility model relates to a high performance hydraulic pressure station automation control system belongs to the hot continuous rolling production line hydraulic pressure station automation control technical field of iron and steel enterprise. The technical scheme includes that the PLCDP system comprises a PLCDP main station (1), a PLCDP slave station (2), a human-computer interface module (3), a process data acquisition module (4), a main rolling line control module (5) and a field input-output module (6), wherein the PLCDP main station is connected with the PLCDP slave station, the PLCDP slave station is connected with the field input-output module, and the process data acquisition module, the main rolling line control module and the human-computer interface module are respectively connected with the PLCDP main station. The utility model has the advantages that: the utility model has the characteristics of the reliability is high, stability is good, visual ability is strong, communication speed is fast, the maintenance cost is low, maintain convenient, easily expand, effectively avoid the abnormal pump that stops, guarantee the continuity of production.

Description

A high-performance hydraulic station automatic control system

technical field

The utility model relates to an automatic control system of a high-performance hydraulic station, which belongs to the technical field of automatic control of a hydraulic station in a hot rolling production line of an iron and steel enterprise.

Background technique

In recent years, with the rapid development of the national economy, the market demand for hot-rolled strip steel continues to increase, and at the same time the requirements for the quality of hot-rolled strip steel products continue to increase, which makes the automatic control function of the hot-rolled strip steel production process put forward higher requirements. Hydraulic transmission is more and more widely used in the hot-rolled strip steel production line due to its advantages such as larger transmission power range, higher control precision, and system flexibility. The hydraulic medium is called the blood of the hot-rolled strip steel production line. Higher requirements are put forward for the hydraulic station as a blood supplier, and the stable and reliable operation of the hydraulic station becomes the key to improving the production output and product quality of the hot rolling production line. The problems of the automatic control system of the hydraulic station in the background art are: poor communication capability, difficult expansion, high failure rate, and difficult maintenance.

Utility model content

The purpose of the utility model is to provide a high-performance hydraulic station automatic control system, decentralized control, centralized management, high reliability, good stability, strong visibility, fast communication speed, low maintenance cost, easy maintenance, and solve the problems in the background technology The above-mentioned problems exist.

The technical solution of the utility model is: a high-performance hydraulic station automation control system, including PLC DP master station, PLC DP slave station, man-machine interface module, process data acquisition module, main rolling line control module, on-site input and output module, The PLC DP master station is connected to the PLC DP slave station, and the PLC DP slave station is connected to the field input and output module, and the process data acquisition module, the main rolling line control module, and the man-machine interface module are respectively connected to the PLC DP master station.

The so-called PLC DP master station includes a matching power supply module, a CPU central processing unit module, and a communication module.

The PLC DP master station adopts Siemens SIMATIC S7-400; the PLC DP slave station is connected to the PLC DP master station through optical fiber

PS power supply module provides power, the central processing unit module model is CPU416-3DP, has a unified clock, with a backup battery for buffer, integrates MPI interface and PROFIBUS-DP interface, MPI interface can be used for debugging, DP interface through PROFIBUS-DP The field bus connects the PLC DP master station and the PLC DP slave station. The model of the PLC DP slave station is ET200M. ET200M is a modular I/O station with high-density configuration. The field input and output module I/O collects temperature, liquid level, pressure, butterfly valve Input signals such as switch limit and output signals such as unloading valve switch and pump start and stop, PLC DP slave station is connected to PLC DP master station through optical fiber, saving a lot of electrical components and cables. The communication module model is CP443-1, which provides Ethernet interface, supports TCP/IP protocol and OSI protocol, and the open Ethernet interface makes it very convenient to connect to the global management system, which can meet the complex basic automation control. The connection of Ethernet realizes the fast communication and exchange of data between PLC and main rolling line control system TDC and human-machine interface module HMI. The PDA of the process data acquisition system is connected with the communication module CP443-5 EXT of the main station through the ibaDPM64 module to realize the online real-time monitoring and data storage functions, which greatly facilitates fault analysis.

In terms of software, Siemens' PCS7 is adopted, and its core is an engineer tool set based on STEP7, which includes the following contents: continuous function block diagram CFC editor, sequential function block diagram SFC editor, ladder diagram LAD editor, statement list STL editor, Function diagram FBD editor, structured programming language SCL editor, NCM S7 for communication between parts, DOKPRO for document editing, library for storing technical function blocks, communication function block library, drive function block library , Libraries of the field device block library. These optional process control components enable the present invention to have process automatic functions, operation monitoring functions, and a large environment of mutual communication functions between components, making its configuration, operation and maintenance very convenient. According to the needs of the production process, use LAD, STL, FBD programming languages to program the function blocks that control pumps, valves, heaters, and coolers, define the corresponding data blocks, and then call them with CFC language. This structure is easy to modify the program and expand . CFC completes the required functions by calling the blocks in the library, and realizes the interaction with the site, HMI, and PDA. The CFC program is executed in a cyclic interrupt mode, and the program execution sequence can be determined according to the needs. This feature can ensure that the process that requires fast response can be obtained. Deal with it in a timely manner. In addition to traditional functions, safety and reliability are fully considered in software programming, and special processing is done for on-site temperature, liquid level, and pressure signals, and GENERAL CONDITION (general conditions) is set for pumps, valves, heaters, and coolers. , START CONDITION (start condition), RUN CONDITION (operating condition), NORMAL OFF CONDITION (stop condition) are used to start and stop the equipment, which considers the temperature, liquid level, pressure, butterfly valve switch, soft start, contactor and other signals, It not only ensures the safe and normal operation of the equipment, but also ensures that the temperature and pressure of the hydraulic medium meet the requirements of the hydraulic equipment. For the start and stop mode of the pump, in addition to the side jog and the screen HMI single pump start and stop, an operation mode of continuous automatic start and stop of multiple pumps is added. In terms of on-site detection instruments, the temperature, pressure, and liquid level all use analog signals, which is convenient for adding more protection and monitoring functions. The liquid level also uses both analog and switch values, which greatly improves the reliability of the system. Higher hydraulic station, temperature detection instrument is added on the pipeline, which is convenient for precise control of the cooler.

The beneficial effects of the utility model are: the utility model has the characteristics of high reliability, good stability, strong visibility, fast communication speed, low maintenance cost, convenient maintenance and easy expansion, effectively avoids abnormal stop of the pump, and ensures production continuity.

Description of drawings

Accompanying drawing 1 is the utility model embodiment schematic diagram;

In the figure: PLC DP master station 1, PLC DP slave station 2, man-machine interface module 3, process data acquisition module 4, main rolling line control module 5, field input and output module 6, power supply module 7, CPU central processing unit module 8 , communication modules 9,10.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

A high-performance hydraulic station automation control system, including PLC DP master station 1, PLC DP slave station 2, man-machine interface module 3, process data acquisition module 4, main rolling line control module 5, field input and output module 6, PLC DP The master station is connected to the PLC DP slave station, the PLC DP slave station is connected to the on-site input and output module, the process data acquisition module, the main rolling line control module, and the man-machine interface module are respectively connected to the PLC DP master station. The said PLC DP master station includes a matching power supply module 7, a CPU central processing unit module 8, and communication modules 9 and 10. The PLC DP master station adopts Siemens SIMATIC S7-400; the PLC DP slave station is connected to the PLC DP master station through optical fiber.

The so-called PLC DP master station adopts Siemens SIMATIC S7-400, including power supply module PS, CPU central processing unit module, communication module CP443-1 and CP443-5 EXT. Among them, the PS407 20A power supply module provides power for the main station, and the central processing unit module CPU416-3DP has a unified clock, with a backup battery for the buffer, and integrates the MPI interface and the PROFIBUS-DP interface. MPI interface can be used for debugging, DP interface connects PLC DP master station and PLC DP slave station through PROFIBUS-DP field bus, PLC DP slave station adopts ET200M series remote I/O module, remote I/O module collects temperature, liquid level, pressure , Butterfly valve switch limit and other input signals and unloading valve switch, pump start and stop and other output signals, the PLC DP slave station is connected to the S7-400 master station through optical fiber, saving a lot of electrical components and cables. Communication module CP443-1 provides Ethernet interface, supports TCP/IP protocol and OSI protocol, and the open Ethernet interface makes it very convenient to connect to the global management system, which can meet the complex basic automation control; Ethernet connection realizes PLC Fast communication and exchange of data with the main rolling line control system TDC and the human-machine interface module HMI. The communication with the TDC enables the two control systems to make appropriate control actions according to each other's status, maximizing the protection of production equipment and To ensure the smooth and continuous production, the screen adopts Siemens WINCC, and its powerful graphics function makes the production status very visible and easy to operate and maintain. The PDA of the process data acquisition system is connected with the communication module CP443-5 EXT of the main station through the ibaDPM64 module to realize the online real-time monitoring and data storage functions, which greatly facilitates fault analysis.

Claims (3)

1. high-performance Hydraulic Station automation control system; It is characterized in that: comprise PLC DP main website (1), PLC DP slave station (2), human-computer interface module (3), process data acquisition module (4), main roll line control module (5), on-the-spot input/output module (6); PLC DP main website connects PLC DP slave station; PLC DP slave station connects on-the-spot input/output module, and process data acquisition module, main roll line control module, human-computer interface module are connected with PLC DP main website respectively.

2. the high-performance Hydraulic Station automation control system according to claim 1 is characterized in that said PLC DP main website, comprises power module (7), CPU CPU module (8), the communication module (9,10) of mutual coupling.

3. according to claim 1 or 2 said high-performance Hydraulic Station automation control systems, it is characterized in that PLC DP slave station inserts PLC DP main website through optical fiber.

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