CN216052726U

CN216052726U - Furnace front control system based on PLC

Info

Publication number: CN216052726U
Application number: CN202122581052.0U
Authority: CN
Inventors: 龚连金; 代光辉; 陈成伟; 陈伟
Original assignee: Hefei Jac Casting Co Ltd
Current assignee: Hefei Jac Casting Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a furnace front control system based on a PLC (programmable logic controller), which comprises a PLC controller, a temperature measuring instrument and an upper computer; the temperature measuring instrument detects temperature data of the pouring ladle and transmits the temperature data to the PLC and the upper computer; the PLC is connected with the switching power supply; the input end of the switching power supply is connected with a 220V alternating current power supply; the PLC is connected with a timer; the timer provides a time signal for the PLC; the PLC controller also controls the switch of the alarm through a relay. According to the utility model, the temperature data of the pouring ladle is monitored by arranging the temperature measuring instrument, and is transmitted to the PLC and the upper computer in real time, the timer is arranged for timing, when the pouring time exceeds the set time, the pouring station alarm is started immediately, and the working personnel see the alarm signal to scrap the molten iron, so that the process automation is realized.

Description

Furnace front control system based on PLC

Technical Field

The utility model belongs to the technical field of cast iron production control, and particularly relates to a furnace front control system based on a PLC.

Background

The production process of the nodular cast iron is that the base iron is inoculated and poured after being spheroidized, and because Mg after the spheroidization is gradually combined with oxygen and sulfur in the pouring process, the residual magnesium content is reduced, the spheroidization grade is influenced, so that the mechanical property of a product is influenced, the inoculation also has time requirements, the inoculation generally has time requirements, the inoculation is declined after the time is long, the graphite core of the base iron is reduced, and the graphite is thick. The casting time must be controlled.

In the existing production process of nodular cast iron, after tapping, a timing button is manually started, so that the operation process is easily forgotten or the timing button is delayed, and the control effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a furnace front control system based on a PLC (programmable logic controller), which monitors temperature data of a pouring ladle by arranging a temperature measuring instrument, transmits the temperature data to the PLC and an upper computer in real time, counts time by arranging a timer, immediately starts an alarm at a pouring station when pouring time exceeds set time, and realizes flow automation by enabling a worker to see an alarm signal to scrap molten iron.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a furnace front control system based on a PLC (programmable logic controller), which comprises a PLC controller, a temperature measuring instrument and an upper computer; the temperature measuring instrument detects temperature data of the pouring ladle and transmits the temperature data to the PLC and the upper computer; the PLC is connected with a switching power supply; the input end of the switching power supply is connected with a 220V alternating current power supply; the PLC is connected with a timer; the timer provides a time signal to the PLC; the PLC controller also controls the switch of the alarm through a relay.

Further, the switching power supply outputs 24V direct current to supply power for the PLC.

Further, an input interface I0.0 of the PLC is connected with a temperature measuring instrument; input interfaces I0.1-I0.6 of the PLC controller are respectively connected with a timing control key; and an input interface I0.7 of the PLC receives a timer reset signal.

Further, the timing control keys include a 5 minute timing control key, an 8 minute timing control key, a 10 minute timing control key, a 12 minute timing control key, a 14 minute timing control key, and a 20 minute timing control key.

Further, an output interface Q0.0 of the PLC controller is connected with an alarm; the output interfaces Q0.1-Q0.6 of the PLC controller are all connected with a timing display lamp; and an output interface Q0.7 of the PLC outputs a timing display lamp starting signal.

Furthermore, one end of the timing display lamp is connected with an output interface of the PLC, and the other end of the timing display lamp is connected with the output end of the switching power supply;

the timing display lamp includes a 5 minute timing display, an 8 minute timing display, a 10 minute timing display, a 12 minute timing display, a 14 minute timing display, and a 20 minute timing display.

The utility model has the following beneficial effects:

according to the utility model, the temperature data of the pouring ladle is monitored by arranging the temperature measuring instrument, and is transmitted to the PLC and the upper computer in real time, the timer is arranged for timing, when the pouring time exceeds the set time, the pouring station alarm is started immediately, and the working personnel see the alarm signal to scrap the molten iron, so that the process automation is realized.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a system block diagram of a PLC-based stokehole control system;

fig. 2 is a circuit diagram of a PLC controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1, the utility model relates to a stokehole control system based on a PLC, comprising a PLC controller, a temperature measuring instrument and an upper computer; the temperature measuring instrument detects temperature data of the pouring ladle and transmits the temperature data to the PLC and the upper computer;

the temperature needs to be detected after molten iron spheroidization, the thermoscope transmits signals to the PLC controller and the upper computer, the PLC controller starts the timer to time after receiving the temperature signals of the thermoscope, manual intervention is not needed, when the pouring time exceeds the set time, the pouring station alarms and starts immediately, a pouring worker sees an alarm signal, the molten iron is scrapped, and the whole process is automatic and easy to control.

Embodiment two, based on embodiment one:

as shown in fig. 2, the PLC controller is connected to the switching power supply; the input end of the switching power supply is connected with a 220V alternating current power supply; the switching power supply outputs 24V direct current to supply power for the PLC;

the PLC is connected with a timer; the timer provides a time signal for the PLC; the PLC controller also controls the switch of the alarm through a relay;

an input interface I0.0 of the PLC is connected with the temperature measuring instrument; input interfaces I0.1-I0.6 of the PLC controller are respectively connected with the timing control keys; an input interface I0.7 of the PLC receives a timer reset signal, and timing control keys comprise a 5-minute timing control key, an 8-minute timing control key, a 10-minute timing control key, a 12-minute timing control key, a 14-minute timing control key and a 20-minute timing control key;

an output interface Q0.0 of the PLC is connected with an alarm; the output interfaces Q0.1-Q0.6 of the PLC controller are all connected with a timing display lamp; an output interface Q0.7 of the PLC controller outputs a timing display lamp starting signal; one end of the timing display lamp is connected with an output interface of the PLC, and the other end of the timing display lamp is connected with the output end of the switching power supply; the time display lamp includes a 5 minute time display, an 8 minute time display, a 10 minute time display, a 12 minute time display, a 14 minute time display, and a 20 minute time display.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A stokehole control system based on a PLC is characterized by comprising a PLC controller, a temperature measuring instrument and an upper computer;

the temperature measuring instrument detects temperature data of the pouring ladle and transmits the temperature data to the PLC and the upper computer;

the PLC is connected with a switching power supply; the input end of the switching power supply is connected with a 220V alternating current power supply;

the PLC is connected with a timer; the timer provides a time signal to the PLC; the PLC controller also controls the switch of the alarm through a relay.

2. The PLC-based stokehole control system as claimed in claim 1, wherein the switching power supply outputs 24 VDC to power the PLC controller.

3. The PLC-based stokehole control system according to claim 1, wherein an input interface I0.0 of the PLC controller is connected with a temperature measuring instrument; input interfaces I0.1-I0.6 of the PLC controller are respectively connected with a timing control key; and an input interface I0.7 of the PLC receives a timer reset signal.

4. The PLC-based stokehole control system according to claim 3, wherein the timing control keys comprise a 5 minute timing control key, an 8 minute timing control key, a 10 minute timing control key, a 12 minute timing control key, a 14 minute timing control key and a 20 minute timing control key.

5. The PLC-based stokehole control system according to claim 1, wherein an output interface Q0.0 of the PLC controller is connected with an alarm; the output interfaces Q0.1-Q0.6 of the PLC controller are all connected with a timing display lamp; and an output interface Q0.7 of the PLC outputs a timing display lamp starting signal.

6. The PLC-based stokehole control system according to claim 5, wherein one end of the timing display lamp is connected with an output interface of the PLC, and the other end of the timing display lamp is connected with an output end of the switching power supply;